[NETFILTER]: Add H.323 conntrack/NAT helper
authorJing Min Zhao <zhaojignmin@hotmail.com>
Tue, 21 Mar 2006 07:41:17 +0000 (23:41 -0800)
committerDavid S. Miller <davem@davemloft.net>
Tue, 21 Mar 2006 07:41:17 +0000 (23:41 -0800)
Signed-off-by: Jing Min Zhao <zhaojignmin@hotmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/netfilter_ipv4/ip_conntrack.h
include/linux/netfilter_ipv4/ip_conntrack_h323.h [new file with mode: 0644]
net/ipv4/netfilter/Kconfig
net/ipv4/netfilter/Makefile
net/ipv4/netfilter/ip_conntrack_helper_h323.c [new file with mode: 0644]
net/ipv4/netfilter/ip_conntrack_helper_h323_asn1.c [new file with mode: 0644]
net/ipv4/netfilter/ip_conntrack_helper_h323_asn1.h [new file with mode: 0644]
net/ipv4/netfilter/ip_conntrack_helper_h323_types.c [new file with mode: 0644]
net/ipv4/netfilter/ip_conntrack_helper_h323_types.h [new file with mode: 0644]
net/ipv4/netfilter/ip_nat_helper_h323.c [new file with mode: 0644]

index 215765f..f32d75c 100644 (file)
@@ -29,6 +29,7 @@ union ip_conntrack_expect_proto {
 };
 
 /* Add protocol helper include file here */
+#include <linux/netfilter_ipv4/ip_conntrack_h323.h>
 #include <linux/netfilter_ipv4/ip_conntrack_pptp.h>
 #include <linux/netfilter_ipv4/ip_conntrack_amanda.h>
 #include <linux/netfilter_ipv4/ip_conntrack_ftp.h>
@@ -37,6 +38,7 @@ union ip_conntrack_expect_proto {
 /* per conntrack: application helper private data */
 union ip_conntrack_help {
        /* insert conntrack helper private data (master) here */
+       struct ip_ct_h323_master ct_h323_info;
        struct ip_ct_pptp_master ct_pptp_info;
        struct ip_ct_ftp_master ct_ftp_info;
        struct ip_ct_irc_master ct_irc_info;
diff --git a/include/linux/netfilter_ipv4/ip_conntrack_h323.h b/include/linux/netfilter_ipv4/ip_conntrack_h323.h
new file mode 100644 (file)
index 0000000..0987cea
--- /dev/null
@@ -0,0 +1,30 @@
+#ifndef _IP_CONNTRACK_H323_H
+#define _IP_CONNTRACK_H323_H
+
+#ifdef __KERNEL__
+
+#define RAS_PORT 1719
+#define Q931_PORT 1720
+#define H323_RTP_CHANNEL_MAX 4 /* Audio, video, FAX and other */
+
+/* This structure exists only once per master */
+struct ip_ct_h323_master {
+
+       /* Original and NATed Q.931 or H.245 signal ports */
+       u_int16_t sig_port[IP_CT_DIR_MAX];
+
+       /* Original and NATed RTP ports */
+       u_int16_t rtp_port[H323_RTP_CHANNEL_MAX][IP_CT_DIR_MAX];
+
+       union {
+               /* RAS connection timeout */
+               u_int32_t timeout;
+
+               /* Next TPKT length (for separate TPKT header and data) */
+               u_int16_t tpkt_len[IP_CT_DIR_MAX];
+       };
+};
+
+#endif
+
+#endif
index 933ee7a..882b842 100644 (file)
@@ -168,6 +168,26 @@ config IP_NF_PPTP
          If you want to compile it as a module, say M here and read
          Documentation/modules.txt.  If unsure, say `N'.
 
+config IP_NF_H323
+       tristate  'H.323 protocol support'
+       depends on IP_NF_CONNTRACK
+       help
+         H.323 is a VoIP signalling protocol from ITU-T. As one of the most
+         important VoIP protocols, it is widely used by voice hardware and
+         software including voice gateways, IP phones, Netmeeting, OpenPhone,
+         Gnomemeeting, etc.
+
+         With this module you can support H.323 on a connection tracking/NAT
+         firewall.
+
+         This module supports RAS, Fast-start, H.245 tunnelling, RTP/RTCP
+         and T.120 based data and applications including audio, video, FAX,
+         chat, whiteboard, file transfer, etc. For more information, please
+         see http://nath323.sourceforge.net/.
+
+         If you want to compile it as a module, say 'M' here and read
+         Documentation/modules.txt.  If unsure, say 'N'.
+
 config IP_NF_QUEUE
        tristate "IP Userspace queueing via NETLINK (OBSOLETE)"
        help
@@ -484,6 +504,12 @@ config IP_NF_NAT_PPTP
        default IP_NF_NAT if IP_NF_PPTP=y
        default m if IP_NF_PPTP=m
 
+config IP_NF_NAT_H323
+       tristate
+       depends on IP_NF_IPTABLES!=n && IP_NF_CONNTRACK!=n && IP_NF_NAT!=n
+       default IP_NF_NAT if IP_NF_H323=y
+       default m if IP_NF_H323=m
+
 # mangle + specific targets
 config IP_NF_MANGLE
        tristate "Packet mangling"
index 3fe8092..f2cd9a6 100644 (file)
@@ -10,6 +10,9 @@ iptable_nat-objs      := ip_nat_rule.o ip_nat_standalone.o
 ip_conntrack_pptp-objs := ip_conntrack_helper_pptp.o ip_conntrack_proto_gre.o
 ip_nat_pptp-objs       := ip_nat_helper_pptp.o ip_nat_proto_gre.o
 
+ip_conntrack_h323-objs := ip_conntrack_helper_h323.o ip_conntrack_helper_h323_asn1.o
+ip_nat_h323-objs := ip_nat_helper_h323.o
+
 # connection tracking
 obj-$(CONFIG_IP_NF_CONNTRACK) += ip_conntrack.o
 obj-$(CONFIG_IP_NF_NAT) += ip_nat.o
@@ -22,6 +25,7 @@ obj-$(CONFIG_IP_NF_CONNTRACK_NETLINK) += ip_conntrack_netlink.o
 obj-$(CONFIG_IP_NF_CT_PROTO_SCTP) += ip_conntrack_proto_sctp.o
 
 # connection tracking helpers
+obj-$(CONFIG_IP_NF_H323) += ip_conntrack_h323.o
 obj-$(CONFIG_IP_NF_PPTP) += ip_conntrack_pptp.o
 obj-$(CONFIG_IP_NF_AMANDA) += ip_conntrack_amanda.o
 obj-$(CONFIG_IP_NF_TFTP) += ip_conntrack_tftp.o
@@ -30,6 +34,7 @@ obj-$(CONFIG_IP_NF_IRC) += ip_conntrack_irc.o
 obj-$(CONFIG_IP_NF_NETBIOS_NS) += ip_conntrack_netbios_ns.o
 
 # NAT helpers 
+obj-$(CONFIG_IP_NF_NAT_H323) += ip_nat_h323.o
 obj-$(CONFIG_IP_NF_NAT_PPTP) += ip_nat_pptp.o
 obj-$(CONFIG_IP_NF_NAT_AMANDA) += ip_nat_amanda.o
 obj-$(CONFIG_IP_NF_NAT_TFTP) += ip_nat_tftp.o
diff --git a/net/ipv4/netfilter/ip_conntrack_helper_h323.c b/net/ipv4/netfilter/ip_conntrack_helper_h323.c
new file mode 100644 (file)
index 0000000..20da673
--- /dev/null
@@ -0,0 +1,1731 @@
+/*
+ * H.323 connection tracking helper
+ *
+ * Copyright (c) 2006 Jing Min Zhao <zhaojingmin@users.sourceforge.net>
+ *
+ * This source code is licensed under General Public License version 2.
+ *
+ * Based on the 'brute force' H.323 connection tracking module by
+ * Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
+ *
+ * For more information, please see http://nath323.sourceforge.net/
+ *
+ * Changes:
+ *     2006-02-01 - initial version 0.1
+ *
+ *     2006-02-20 - version 0.2
+ *       1. Changed source format to follow kernel conventions
+ *       2. Deleted some unnecessary structures
+ *       3. Minor fixes
+ *
+ *     2006-03-10 - version 0.3
+ *       1. Added support for multiple TPKTs in one packet (suggested by
+ *          Patrick McHardy)
+ *       2. Avoid excessive stack usage (based on Patrick McHardy's patch)
+ *       3. Added support for non-linear skb (based on Patrick McHardy's patch)
+ *       4. Fixed missing H.245 module owner (Patrick McHardy)
+ *       5. Avoid long RAS expectation chains (Patrick McHardy)
+ *       6. Fixed incorrect __exit attribute (Patrick McHardy)
+ *       7. Eliminated unnecessary return code
+ *       8. Fixed incorrect use of NAT data from conntrack code (suggested by
+ *          Patrick McHardy)
+ *       9. Fixed TTL calculation error in RCF
+ *       10. Added TTL support in RRQ
+ *       11. Better support for separate TPKT header and data
+ *
+ *     2006-03-15 - version 0.4
+ *       1. Added support for T.120 channels
+ *       2. Added parameter gkrouted_only (suggested by Patrick McHardy)
+ *       3. Splitted ASN.1 code and data (suggested by Patrick McHardy)
+ *       4. Sort ASN.1 data to avoid forwarding declarations (suggested by
+ *          Patrick McHardy)
+ *       5. Reset next TPKT data length in get_tpkt_data()
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/netfilter.h>
+#include <linux/ip.h>
+#include <net/tcp.h>
+#include <linux/netfilter_ipv4/ip_conntrack.h>
+#include <linux/netfilter_ipv4/ip_conntrack_core.h>
+#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+#include <linux/netfilter_ipv4/ip_conntrack_tuple.h>
+#include <linux/netfilter_ipv4/ip_conntrack_h323.h>
+#include <linux/moduleparam.h>
+
+#include "ip_conntrack_helper_h323_asn1.h"
+
+#if 0
+#define DEBUGP printk
+#else
+#define DEBUGP(format, args...)
+#endif
+
+/* Parameters */
+static int gkrouted_only = 1;
+module_param(gkrouted_only, int, 0600);
+MODULE_PARM_DESC(gkrouted_only, "only accept calls from gatekeeper");
+
+/* Hooks for NAT */
+int (*set_h245_addr_hook) (struct sk_buff ** pskb,
+                          unsigned char **data, int dataoff,
+                          H245_TransportAddress * addr,
+                          u_int32_t ip, u_int16_t port);
+int (*set_h225_addr_hook) (struct sk_buff ** pskb,
+                          unsigned char **data, int dataoff,
+                          TransportAddress * addr,
+                          u_int32_t ip, u_int16_t port);
+int (*set_sig_addr_hook) (struct sk_buff ** pskb,
+                         struct ip_conntrack * ct,
+                         enum ip_conntrack_info ctinfo,
+                         unsigned char **data,
+                         TransportAddress * addr, int count);
+int (*set_ras_addr_hook) (struct sk_buff ** pskb,
+                         struct ip_conntrack * ct,
+                         enum ip_conntrack_info ctinfo,
+                         unsigned char **data,
+                         TransportAddress * addr, int count);
+int (*nat_rtp_rtcp_hook) (struct sk_buff ** pskb,
+                         struct ip_conntrack * ct,
+                         enum ip_conntrack_info ctinfo,
+                         unsigned char **data, int dataoff,
+                         H245_TransportAddress * addr,
+                         u_int16_t port, u_int16_t rtp_port,
+                         struct ip_conntrack_expect * rtp_exp,
+                         struct ip_conntrack_expect * rtcp_exp);
+int (*nat_t120_hook) (struct sk_buff ** pskb,
+                     struct ip_conntrack * ct,
+                     enum ip_conntrack_info ctinfo,
+                     unsigned char **data, int dataoff,
+                     H245_TransportAddress * addr, u_int16_t port,
+                     struct ip_conntrack_expect * exp);
+int (*nat_h245_hook) (struct sk_buff ** pskb,
+                     struct ip_conntrack * ct,
+                     enum ip_conntrack_info ctinfo,
+                     unsigned char **data, int dataoff,
+                     TransportAddress * addr, u_int16_t port,
+                     struct ip_conntrack_expect * exp);
+int (*nat_q931_hook) (struct sk_buff ** pskb,
+                     struct ip_conntrack * ct,
+                     enum ip_conntrack_info ctinfo,
+                     unsigned char **data, TransportAddress * addr, int idx,
+                     u_int16_t port, struct ip_conntrack_expect * exp);
+
+
+static DEFINE_SPINLOCK(ip_h323_lock);
+static char *h323_buffer;
+
+/****************************************************************************/
+static int get_tpkt_data(struct sk_buff **pskb, struct ip_conntrack *ct,
+                        enum ip_conntrack_info ctinfo,
+                        unsigned char **data, int *datalen, int *dataoff)
+{
+       struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+       int dir = CTINFO2DIR(ctinfo);
+       struct tcphdr _tcph, *th;
+       int tcpdatalen;
+       int tcpdataoff;
+       unsigned char *tpkt;
+       int tpktlen;
+       int tpktoff;
+
+       /* Get TCP header */
+       th = skb_header_pointer(*pskb, (*pskb)->nh.iph->ihl * 4,
+                               sizeof(_tcph), &_tcph);
+       if (th == NULL)
+               return 0;
+
+       /* Get TCP data offset */
+       tcpdataoff = (*pskb)->nh.iph->ihl * 4 + th->doff * 4;
+
+       /* Get TCP data length */
+       tcpdatalen = (*pskb)->len - tcpdataoff;
+       if (tcpdatalen <= 0)    /* No TCP data */
+               goto clear_out;
+
+       if (*data == NULL) {    /* first TPKT */
+               /* Get first TPKT pointer */
+               tpkt = skb_header_pointer(*pskb, tcpdataoff, tcpdatalen,
+                                         h323_buffer);
+               BUG_ON(tpkt == NULL);
+
+               /* Validate TPKT identifier */
+               if (tcpdatalen < 4 || tpkt[0] != 0x03 || tpkt[1] != 0) {
+                       /* Netmeeting sends TPKT header and data separately */
+                       if (info->tpkt_len[dir] > 0) {
+                               DEBUGP("ip_ct_h323: previous packet "
+                                      "indicated separate TPKT data of %hu "
+                                      "bytes\n", info->tpkt_len[dir]);
+                               if (info->tpkt_len[dir] <= tcpdatalen) {
+                                       /* Yes, there was a TPKT header
+                                        * received */
+                                       *data = tpkt;
+                                       *datalen = info->tpkt_len[dir];
+                                       *dataoff = 0;
+                                       goto out;
+                               }
+
+                               /* Fragmented TPKT */
+                               if (net_ratelimit())
+                                       printk("ip_ct_h323: "
+                                              "fragmented TPKT\n");
+                               goto clear_out;
+                       }
+
+                       /* It is not even a TPKT */
+                       return 0;
+               }
+               tpktoff = 0;
+       } else {                /* Next TPKT */
+               tpktoff = *dataoff + *datalen;
+               tcpdatalen -= tpktoff;
+               if (tcpdatalen <= 4)    /* No more TPKT */
+                       goto clear_out;
+               tpkt = *data + *datalen;
+
+               /* Validate TPKT identifier */
+               if (tpkt[0] != 0x03 || tpkt[1] != 0)
+                       goto clear_out;
+       }
+
+       /* Validate TPKT length */
+       tpktlen = tpkt[2] * 256 + tpkt[3];
+       if (tpktlen > tcpdatalen) {
+               if (tcpdatalen == 4) {  /* Separate TPKT header */
+                       /* Netmeeting sends TPKT header and data separately */
+                       DEBUGP("ip_ct_h323: separate TPKT header indicates "
+                              "there will be TPKT data of %hu bytes\n",
+                              tpktlen - 4);
+                       info->tpkt_len[dir] = tpktlen - 4;
+                       return 0;
+               }
+
+               if (net_ratelimit())
+                       printk("ip_ct_h323: incomplete TPKT (fragmented?)\n");
+               goto clear_out;
+       }
+
+       /* This is the encapsulated data */
+       *data = tpkt + 4;
+       *datalen = tpktlen - 4;
+       *dataoff = tpktoff + 4;
+
+      out:
+       /* Clear TPKT length */
+       info->tpkt_len[dir] = 0;
+       return 1;
+
+      clear_out:
+       info->tpkt_len[dir] = 0;
+       return 0;
+}
+
+/****************************************************************************/
+int get_h245_addr(unsigned char *data, H245_TransportAddress * addr,
+                 u_int32_t * ip, u_int16_t * port)
+{
+       unsigned char *p;
+
+       if (addr->choice != eH245_TransportAddress_unicastAddress ||
+           addr->unicastAddress.choice != eUnicastAddress_iPAddress)
+               return 0;
+
+       p = data + addr->unicastAddress.iPAddress.network;
+       *ip = htonl((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3]));
+       *port = (p[4] << 8) | (p[5]);
+
+       return 1;
+}
+
+/****************************************************************************/
+static int expect_rtp_rtcp(struct sk_buff **pskb, struct ip_conntrack *ct,
+                          enum ip_conntrack_info ctinfo,
+                          unsigned char **data, int dataoff,
+                          H245_TransportAddress * addr)
+{
+       int dir = CTINFO2DIR(ctinfo);
+       int ret = 0;
+       u_int32_t ip;
+       u_int16_t port;
+       u_int16_t rtp_port;
+       struct ip_conntrack_expect *rtp_exp;
+       struct ip_conntrack_expect *rtcp_exp;
+
+       /* Read RTP or RTCP address */
+       if (!get_h245_addr(*data, addr, &ip, &port) ||
+           ip != ct->tuplehash[dir].tuple.src.ip || port == 0)
+               return 0;
+
+       /* RTP port is even */
+       rtp_port = port & (~1);
+
+       /* Create expect for RTP */
+       if ((rtp_exp = ip_conntrack_expect_alloc(ct)) == NULL)
+               return -1;
+       rtp_exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+       rtp_exp->tuple.src.u.udp.port = 0;
+       rtp_exp->tuple.dst.ip = ct->tuplehash[!dir].tuple.dst.ip;
+       rtp_exp->tuple.dst.u.udp.port = htons(rtp_port);
+       rtp_exp->tuple.dst.protonum = IPPROTO_UDP;
+       rtp_exp->mask.src.ip = 0xFFFFFFFF;
+       rtp_exp->mask.src.u.udp.port = 0;
+       rtp_exp->mask.dst.ip = 0xFFFFFFFF;
+       rtp_exp->mask.dst.u.udp.port = 0xFFFF;
+       rtp_exp->mask.dst.protonum = 0xFF;
+       rtp_exp->flags = 0;
+
+       /* Create expect for RTCP */
+       if ((rtcp_exp = ip_conntrack_expect_alloc(ct)) == NULL) {
+               ip_conntrack_expect_put(rtp_exp);
+               return -1;
+       }
+       rtcp_exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+       rtcp_exp->tuple.src.u.udp.port = 0;
+       rtcp_exp->tuple.dst.ip = ct->tuplehash[!dir].tuple.dst.ip;
+       rtcp_exp->tuple.dst.u.udp.port = htons(rtp_port + 1);
+       rtcp_exp->tuple.dst.protonum = IPPROTO_UDP;
+       rtcp_exp->mask.src.ip = 0xFFFFFFFF;
+       rtcp_exp->mask.src.u.udp.port = 0;
+       rtcp_exp->mask.dst.ip = 0xFFFFFFFF;
+       rtcp_exp->mask.dst.u.udp.port = 0xFFFF;
+       rtcp_exp->mask.dst.protonum = 0xFF;
+       rtcp_exp->flags = 0;
+
+       if (ct->tuplehash[dir].tuple.src.ip !=
+           ct->tuplehash[!dir].tuple.dst.ip && nat_rtp_rtcp_hook) {
+               /* NAT needed */
+               ret = nat_rtp_rtcp_hook(pskb, ct, ctinfo, data, dataoff,
+                                       addr, port, rtp_port, rtp_exp,
+                                       rtcp_exp);
+       } else {                /* Conntrack only */
+               rtp_exp->expectfn = NULL;
+               rtcp_exp->expectfn = NULL;
+
+               if (ip_conntrack_expect_related(rtp_exp) == 0) {
+                       if (ip_conntrack_expect_related(rtcp_exp) == 0) {
+                               DEBUGP("ip_ct_h323: expect RTP "
+                                      "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+                                      NIPQUAD(rtp_exp->tuple.src.ip),
+                                      ntohs(rtp_exp->tuple.src.u.udp.port),
+                                      NIPQUAD(rtp_exp->tuple.dst.ip),
+                                      ntohs(rtp_exp->tuple.dst.u.udp.port));
+                               DEBUGP("ip_ct_h323: expect RTCP "
+                                      "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+                                      NIPQUAD(rtcp_exp->tuple.src.ip),
+                                      ntohs(rtcp_exp->tuple.src.u.udp.port),
+                                      NIPQUAD(rtcp_exp->tuple.dst.ip),
+                                      ntohs(rtcp_exp->tuple.dst.u.udp.port));
+                       } else {
+                               ip_conntrack_unexpect_related(rtp_exp);
+                               ret = -1;
+                       }
+               } else
+                       ret = -1;
+       }
+
+       ip_conntrack_expect_put(rtp_exp);
+       ip_conntrack_expect_put(rtcp_exp);
+
+       return ret;
+}
+
+/****************************************************************************/
+static int expect_t120(struct sk_buff **pskb,
+                      struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, int dataoff,
+                      H245_TransportAddress * addr)
+{
+       int dir = CTINFO2DIR(ctinfo);
+       int ret = 0;
+       u_int32_t ip;
+       u_int16_t port;
+       struct ip_conntrack_expect *exp = NULL;
+
+       /* Read T.120 address */
+       if (!get_h245_addr(*data, addr, &ip, &port) ||
+           ip != ct->tuplehash[dir].tuple.src.ip || port == 0)
+               return 0;
+
+       /* Create expect for T.120 connections */
+       if ((exp = ip_conntrack_expect_alloc(ct)) == NULL)
+               return -1;
+       exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+       exp->tuple.src.u.tcp.port = 0;
+       exp->tuple.dst.ip = ct->tuplehash[!dir].tuple.dst.ip;
+       exp->tuple.dst.u.tcp.port = htons(port);
+       exp->tuple.dst.protonum = IPPROTO_TCP;
+       exp->mask.src.ip = 0xFFFFFFFF;
+       exp->mask.src.u.tcp.port = 0;
+       exp->mask.dst.ip = 0xFFFFFFFF;
+       exp->mask.dst.u.tcp.port = 0xFFFF;
+       exp->mask.dst.protonum = 0xFF;
+       exp->flags = IP_CT_EXPECT_PERMANENT;    /* Accept multiple channels */
+
+       if (ct->tuplehash[dir].tuple.src.ip !=
+           ct->tuplehash[!dir].tuple.dst.ip && nat_t120_hook) {
+               /* NAT needed */
+               ret = nat_t120_hook(pskb, ct, ctinfo, data, dataoff, addr,
+                                   port, exp);
+       } else {                /* Conntrack only */
+               exp->expectfn = NULL;
+               if (ip_conntrack_expect_related(exp) == 0) {
+                       DEBUGP("ip_ct_h323: expect T.120 "
+                              "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+                              NIPQUAD(exp->tuple.src.ip),
+                              ntohs(exp->tuple.src.u.tcp.port),
+                              NIPQUAD(exp->tuple.dst.ip),
+                              ntohs(exp->tuple.dst.u.tcp.port));
+               } else
+                       ret = -1;
+       }
+
+       ip_conntrack_expect_put(exp);
+
+       return ret;
+}
+
+/****************************************************************************/
+static int process_h245_channel(struct sk_buff **pskb,
+                               struct ip_conntrack *ct,
+                               enum ip_conntrack_info ctinfo,
+                               unsigned char **data, int dataoff,
+                               H2250LogicalChannelParameters * channel)
+{
+       int ret;
+
+       if (channel->options & eH2250LogicalChannelParameters_mediaChannel) {
+               /* RTP */
+               ret = expect_rtp_rtcp(pskb, ct, ctinfo, data, dataoff,
+                                     &channel->mediaChannel);
+               if (ret < 0)
+                       return -1;
+       }
+
+       if (channel->
+           options & eH2250LogicalChannelParameters_mediaControlChannel) {
+               /* RTCP */
+               ret = expect_rtp_rtcp(pskb, ct, ctinfo, data, dataoff,
+                                     &channel->mediaControlChannel);
+               if (ret < 0)
+                       return -1;
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_olc(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, int dataoff,
+                      OpenLogicalChannel * olc)
+{
+       int ret;
+
+       DEBUGP("ip_ct_h323: OpenLogicalChannel\n");
+
+       if (olc->forwardLogicalChannelParameters.multiplexParameters.choice ==
+           eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters)
+       {
+               ret = process_h245_channel(pskb, ct, ctinfo, data, dataoff,
+                                          &olc->
+                                          forwardLogicalChannelParameters.
+                                          multiplexParameters.
+                                          h2250LogicalChannelParameters);
+               if (ret < 0)
+                       return -1;
+       }
+
+       if ((olc->options &
+            eOpenLogicalChannel_reverseLogicalChannelParameters) &&
+           (olc->reverseLogicalChannelParameters.options &
+            eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters)
+           && (olc->reverseLogicalChannelParameters.multiplexParameters.
+               choice ==
+               eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters))
+       {
+               ret =
+                   process_h245_channel(pskb, ct, ctinfo, data, dataoff,
+                                        &olc->
+                                        reverseLogicalChannelParameters.
+                                        multiplexParameters.
+                                        h2250LogicalChannelParameters);
+               if (ret < 0)
+                       return -1;
+       }
+
+       if ((olc->options & eOpenLogicalChannel_separateStack) &&
+           olc->forwardLogicalChannelParameters.dataType.choice ==
+           eDataType_data &&
+           olc->forwardLogicalChannelParameters.dataType.data.application.
+           choice == eDataApplicationCapability_application_t120 &&
+           olc->forwardLogicalChannelParameters.dataType.data.application.
+           t120.choice == eDataProtocolCapability_separateLANStack &&
+           olc->separateStack.networkAddress.choice ==
+           eNetworkAccessParameters_networkAddress_localAreaAddress) {
+               ret = expect_t120(pskb, ct, ctinfo, data, dataoff,
+                                 &olc->separateStack.networkAddress.
+                                 localAreaAddress);
+               if (ret < 0)
+                       return -1;
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_olca(struct sk_buff **pskb, struct ip_conntrack *ct,
+                       enum ip_conntrack_info ctinfo,
+                       unsigned char **data, int dataoff,
+                       OpenLogicalChannelAck * olca)
+{
+       H2250LogicalChannelAckParameters *ack;
+       int ret;
+
+       DEBUGP("ip_ct_h323: OpenLogicalChannelAck\n");
+
+       if ((olca->options &
+            eOpenLogicalChannelAck_reverseLogicalChannelParameters) &&
+           (olca->reverseLogicalChannelParameters.options &
+            eOpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters)
+           && (olca->reverseLogicalChannelParameters.multiplexParameters.
+               choice ==
+               eOpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters))
+       {
+               ret = process_h245_channel(pskb, ct, ctinfo, data, dataoff,
+                                          &olca->
+                                          reverseLogicalChannelParameters.
+                                          multiplexParameters.
+                                          h2250LogicalChannelParameters);
+               if (ret < 0)
+                       return -1;
+       }
+
+       if ((olca->options &
+            eOpenLogicalChannelAck_forwardMultiplexAckParameters) &&
+           (olca->forwardMultiplexAckParameters.choice ==
+            eOpenLogicalChannelAck_forwardMultiplexAckParameters_h2250LogicalChannelAckParameters))
+       {
+               ack = &olca->forwardMultiplexAckParameters.
+                   h2250LogicalChannelAckParameters;
+               if (ack->options &
+                   eH2250LogicalChannelAckParameters_mediaChannel) {
+                       /* RTP */
+                       ret = expect_rtp_rtcp(pskb, ct, ctinfo, data, dataoff,
+                                             &ack->mediaChannel);
+                       if (ret < 0)
+                               return -1;
+               }
+
+               if (ack->options &
+                   eH2250LogicalChannelAckParameters_mediaControlChannel) {
+                       /* RTCP */
+                       ret = expect_rtp_rtcp(pskb, ct, ctinfo, data, dataoff,
+                                             &ack->mediaControlChannel);
+                       if (ret < 0)
+                               return -1;
+               }
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_h245(struct sk_buff **pskb, struct ip_conntrack *ct,
+                       enum ip_conntrack_info ctinfo,
+                       unsigned char **data, int dataoff,
+                       MultimediaSystemControlMessage * mscm)
+{
+       switch (mscm->choice) {
+       case eMultimediaSystemControlMessage_request:
+               if (mscm->request.choice ==
+                   eRequestMessage_openLogicalChannel) {
+                       return process_olc(pskb, ct, ctinfo, data, dataoff,
+                                          &mscm->request.openLogicalChannel);
+               }
+               DEBUGP("ip_ct_h323: H.245 Request %d\n",
+                      mscm->request.choice);
+               break;
+       case eMultimediaSystemControlMessage_response:
+               if (mscm->response.choice ==
+                   eResponseMessage_openLogicalChannelAck) {
+                       return process_olca(pskb, ct, ctinfo, data, dataoff,
+                                           &mscm->response.
+                                           openLogicalChannelAck);
+               }
+               DEBUGP("ip_ct_h323: H.245 Response %d\n",
+                      mscm->response.choice);
+               break;
+       default:
+               DEBUGP("ip_ct_h323: H.245 signal %d\n", mscm->choice);
+               break;
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int h245_help(struct sk_buff **pskb, struct ip_conntrack *ct,
+                    enum ip_conntrack_info ctinfo)
+{
+       static MultimediaSystemControlMessage mscm;
+       unsigned char *data = NULL;
+       int datalen;
+       int dataoff;
+       int ret;
+
+       /* Until there's been traffic both ways, don't look in packets. */
+       if (ctinfo != IP_CT_ESTABLISHED
+           && ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) {
+               return NF_ACCEPT;
+       }
+       DEBUGP("ip_ct_h245: skblen = %u\n", (*pskb)->len);
+
+       spin_lock_bh(&ip_h323_lock);
+
+       /* Process each TPKT */
+       while (get_tpkt_data(pskb, ct, ctinfo, &data, &datalen, &dataoff)) {
+               DEBUGP("ip_ct_h245: TPKT %u.%u.%u.%u->%u.%u.%u.%u, len=%d\n",
+                      NIPQUAD((*pskb)->nh.iph->saddr),
+                      NIPQUAD((*pskb)->nh.iph->daddr), datalen);
+
+               /* Decode H.245 signal */
+               ret = DecodeMultimediaSystemControlMessage(data, datalen,
+                                                          &mscm);
+               if (ret < 0) {
+                       if (net_ratelimit())
+                               printk("ip_ct_h245: decoding error: %s\n",
+                                      ret == H323_ERROR_BOUND ?
+                                      "out of bound" : "out of range");
+                       /* We don't drop when decoding error */
+                       break;
+               }
+
+               /* Process H.245 signal */
+               if (process_h245(pskb, ct, ctinfo, &data, dataoff, &mscm) < 0)
+                       goto drop;
+       }
+
+       spin_unlock_bh(&ip_h323_lock);
+       return NF_ACCEPT;
+
+      drop:
+       spin_unlock_bh(&ip_h323_lock);
+       if (net_ratelimit())
+               printk("ip_ct_h245: packet dropped\n");
+       return NF_DROP;
+}
+
+/****************************************************************************/
+static struct ip_conntrack_helper ip_conntrack_helper_h245 = {
+       .name = "H.245",
+       .me = THIS_MODULE,
+       .max_expected = H323_RTP_CHANNEL_MAX * 4 + 2 /* T.120 */ ,
+       .timeout = 240,
+       .tuple = {.dst = {.protonum = IPPROTO_TCP}},
+       .mask = {.src = {.u = {0xFFFF}},
+                .dst = {.protonum = 0xFF}},
+       .help = h245_help
+};
+
+/****************************************************************************/
+void ip_conntrack_h245_expect(struct ip_conntrack *new,
+                             struct ip_conntrack_expect *this)
+{
+       write_lock_bh(&ip_conntrack_lock);
+       new->helper = &ip_conntrack_helper_h245;
+       write_unlock_bh(&ip_conntrack_lock);
+}
+
+/****************************************************************************/
+static int get_h225_addr(unsigned char *data, TransportAddress * addr,
+                        u_int32_t * ip, u_int16_t * port)
+{
+       unsigned char *p;
+
+       if (addr->choice != eTransportAddress_ipAddress)
+               return 0;
+
+       p = data + addr->ipAddress.ip;
+       *ip = htonl((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3]));
+       *port = (p[4] << 8) | (p[5]);
+
+       return 1;
+}
+
+/****************************************************************************/
+static int expect_h245(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, int dataoff,
+                      TransportAddress * addr)
+{
+       int dir = CTINFO2DIR(ctinfo);
+       int ret = 0;
+       u_int32_t ip;
+       u_int16_t port;
+       struct ip_conntrack_expect *exp = NULL;
+
+       /* Read h245Address */
+       if (!get_h225_addr(*data, addr, &ip, &port) ||
+           ip != ct->tuplehash[dir].tuple.src.ip || port == 0)
+               return 0;
+
+       /* Create expect for h245 connection */
+       if ((exp = ip_conntrack_expect_alloc(ct)) == NULL)
+               return -1;
+       exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+       exp->tuple.src.u.tcp.port = 0;
+       exp->tuple.dst.ip = ct->tuplehash[!dir].tuple.dst.ip;
+       exp->tuple.dst.u.tcp.port = htons(port);
+       exp->tuple.dst.protonum = IPPROTO_TCP;
+       exp->mask.src.ip = 0xFFFFFFFF;
+       exp->mask.src.u.tcp.port = 0;
+       exp->mask.dst.ip = 0xFFFFFFFF;
+       exp->mask.dst.u.tcp.port = 0xFFFF;
+       exp->mask.dst.protonum = 0xFF;
+       exp->flags = 0;
+
+       if (ct->tuplehash[dir].tuple.src.ip !=
+           ct->tuplehash[!dir].tuple.dst.ip && nat_h245_hook) {
+               /* NAT needed */
+               ret = nat_h245_hook(pskb, ct, ctinfo, data, dataoff, addr,
+                                   port, exp);
+       } else {                /* Conntrack only */
+               exp->expectfn = ip_conntrack_h245_expect;
+
+               if (ip_conntrack_expect_related(exp) == 0) {
+                       DEBUGP("ip_ct_q931: expect H.245 "
+                              "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+                              NIPQUAD(exp->tuple.src.ip),
+                              ntohs(exp->tuple.src.u.tcp.port),
+                              NIPQUAD(exp->tuple.dst.ip),
+                              ntohs(exp->tuple.dst.u.tcp.port));
+               } else
+                       ret = -1;
+       }
+
+       ip_conntrack_expect_put(exp);
+
+       return ret;
+}
+
+/****************************************************************************/
+static int process_setup(struct sk_buff **pskb, struct ip_conntrack *ct,
+                        enum ip_conntrack_info ctinfo,
+                        unsigned char **data, int dataoff,
+                        Setup_UUIE * setup)
+{
+       int dir = CTINFO2DIR(ctinfo);
+       int ret;
+       int i;
+       u_int32_t ip;
+       u_int16_t port;
+
+       DEBUGP("ip_ct_q931: Setup\n");
+
+       if (setup->options & eSetup_UUIE_h245Address) {
+               ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+                                 &setup->h245Address);
+               if (ret < 0)
+                       return -1;
+       }
+
+       if ((setup->options & eSetup_UUIE_destCallSignalAddress) &&
+           (set_h225_addr_hook) &&
+           get_h225_addr(*data, &setup->destCallSignalAddress, &ip, &port) &&
+           ip != ct->tuplehash[!dir].tuple.src.ip) {
+               DEBUGP("ip_ct_q931: set destCallSignalAddress "
+                      "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+                      NIPQUAD(ip), port,
+                      NIPQUAD(ct->tuplehash[!dir].tuple.src.ip),
+                      ntohs(ct->tuplehash[!dir].tuple.src.u.tcp.port));
+               ret = set_h225_addr_hook(pskb, data, dataoff,
+                                        &setup->destCallSignalAddress,
+                                        ct->tuplehash[!dir].tuple.src.ip,
+                                        ntohs(ct->tuplehash[!dir].tuple.src.
+                                              u.tcp.port));
+               if (ret < 0)
+                       return -1;
+       }
+
+       if ((setup->options & eSetup_UUIE_sourceCallSignalAddress) &&
+           (set_h225_addr_hook) &&
+           get_h225_addr(*data, &setup->sourceCallSignalAddress, &ip, &port)
+           && ip != ct->tuplehash[!dir].tuple.dst.ip) {
+               DEBUGP("ip_ct_q931: set sourceCallSignalAddress "
+                      "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+                      NIPQUAD(ip), port,
+                      NIPQUAD(ct->tuplehash[!dir].tuple.dst.ip),
+                      ntohs(ct->tuplehash[!dir].tuple.dst.u.tcp.port));
+               ret = set_h225_addr_hook(pskb, data, dataoff,
+                                        &setup->sourceCallSignalAddress,
+                                        ct->tuplehash[!dir].tuple.dst.ip,
+                                        ntohs(ct->tuplehash[!dir].tuple.dst.
+                                              u.tcp.port));
+               if (ret < 0)
+                       return -1;
+       }
+
+       if (setup->options & eSetup_UUIE_fastStart) {
+               for (i = 0; i < setup->fastStart.count; i++) {
+                       ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+                                         &setup->fastStart.item[i]);
+                       if (ret < 0)
+                               return -1;
+               }
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_callproceeding(struct sk_buff **pskb,
+                                 struct ip_conntrack *ct,
+                                 enum ip_conntrack_info ctinfo,
+                                 unsigned char **data, int dataoff,
+                                 CallProceeding_UUIE * callproc)
+{
+       int ret;
+       int i;
+
+       DEBUGP("ip_ct_q931: CallProceeding\n");
+
+       if (callproc->options & eCallProceeding_UUIE_h245Address) {
+               ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+                                 &callproc->h245Address);
+               if (ret < 0)
+                       return -1;
+       }
+
+       if (callproc->options & eCallProceeding_UUIE_fastStart) {
+               for (i = 0; i < callproc->fastStart.count; i++) {
+                       ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+                                         &callproc->fastStart.item[i]);
+                       if (ret < 0)
+                               return -1;
+               }
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_connect(struct sk_buff **pskb, struct ip_conntrack *ct,
+                          enum ip_conntrack_info ctinfo,
+                          unsigned char **data, int dataoff,
+                          Connect_UUIE * connect)
+{
+       int ret;
+       int i;
+
+       DEBUGP("ip_ct_q931: Connect\n");
+
+       if (connect->options & eConnect_UUIE_h245Address) {
+               ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+                                 &connect->h245Address);
+               if (ret < 0)
+                       return -1;
+       }
+
+       if (connect->options & eConnect_UUIE_fastStart) {
+               for (i = 0; i < connect->fastStart.count; i++) {
+                       ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+                                         &connect->fastStart.item[i]);
+                       if (ret < 0)
+                               return -1;
+               }
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_alerting(struct sk_buff **pskb, struct ip_conntrack *ct,
+                           enum ip_conntrack_info ctinfo,
+                           unsigned char **data, int dataoff,
+                           Alerting_UUIE * alert)
+{
+       int ret;
+       int i;
+
+       DEBUGP("ip_ct_q931: Alerting\n");
+
+       if (alert->options & eAlerting_UUIE_h245Address) {
+               ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+                                 &alert->h245Address);
+               if (ret < 0)
+                       return -1;
+       }
+
+       if (alert->options & eAlerting_UUIE_fastStart) {
+               for (i = 0; i < alert->fastStart.count; i++) {
+                       ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+                                         &alert->fastStart.item[i]);
+                       if (ret < 0)
+                               return -1;
+               }
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_information(struct sk_buff **pskb,
+                              struct ip_conntrack *ct,
+                              enum ip_conntrack_info ctinfo,
+                              unsigned char **data, int dataoff,
+                              Information_UUIE * info)
+{
+       int ret;
+       int i;
+
+       DEBUGP("ip_ct_q931: Information\n");
+
+       if (info->options & eInformation_UUIE_fastStart) {
+               for (i = 0; i < info->fastStart.count; i++) {
+                       ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+                                         &info->fastStart.item[i]);
+                       if (ret < 0)
+                               return -1;
+               }
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_facility(struct sk_buff **pskb, struct ip_conntrack *ct,
+                           enum ip_conntrack_info ctinfo,
+                           unsigned char **data, int dataoff,
+                           Facility_UUIE * facility)
+{
+       int ret;
+       int i;
+
+       DEBUGP("ip_ct_q931: Facility\n");
+
+       if (facility->options & eFacility_UUIE_h245Address) {
+               ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+                                 &facility->h245Address);
+               if (ret < 0)
+                       return -1;
+       }
+
+       if (facility->options & eFacility_UUIE_fastStart) {
+               for (i = 0; i < facility->fastStart.count; i++) {
+                       ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+                                         &facility->fastStart.item[i]);
+                       if (ret < 0)
+                               return -1;
+               }
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_progress(struct sk_buff **pskb, struct ip_conntrack *ct,
+                           enum ip_conntrack_info ctinfo,
+                           unsigned char **data, int dataoff,
+                           Progress_UUIE * progress)
+{
+       int ret;
+       int i;
+
+       DEBUGP("ip_ct_q931: Progress\n");
+
+       if (progress->options & eProgress_UUIE_h245Address) {
+               ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+                                 &progress->h245Address);
+               if (ret < 0)
+                       return -1;
+       }
+
+       if (progress->options & eProgress_UUIE_fastStart) {
+               for (i = 0; i < progress->fastStart.count; i++) {
+                       ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+                                         &progress->fastStart.item[i]);
+                       if (ret < 0)
+                               return -1;
+               }
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_q931(struct sk_buff **pskb, struct ip_conntrack *ct,
+                       enum ip_conntrack_info ctinfo,
+                       unsigned char **data, int dataoff, Q931 * q931)
+{
+       H323_UU_PDU *pdu = &q931->UUIE.h323_uu_pdu;
+       int i;
+       int ret = 0;
+
+       switch (pdu->h323_message_body.choice) {
+       case eH323_UU_PDU_h323_message_body_setup:
+               ret = process_setup(pskb, ct, ctinfo, data, dataoff,
+                                   &pdu->h323_message_body.setup);
+               break;
+       case eH323_UU_PDU_h323_message_body_callProceeding:
+               ret = process_callproceeding(pskb, ct, ctinfo, data, dataoff,
+                                            &pdu->h323_message_body.
+                                            callProceeding);
+               break;
+       case eH323_UU_PDU_h323_message_body_connect:
+               ret = process_connect(pskb, ct, ctinfo, data, dataoff,
+                                     &pdu->h323_message_body.connect);
+               break;
+       case eH323_UU_PDU_h323_message_body_alerting:
+               ret = process_alerting(pskb, ct, ctinfo, data, dataoff,
+                                      &pdu->h323_message_body.alerting);
+               break;
+       case eH323_UU_PDU_h323_message_body_information:
+               ret = process_information(pskb, ct, ctinfo, data, dataoff,
+                                         &pdu->h323_message_body.
+                                         information);
+               break;
+       case eH323_UU_PDU_h323_message_body_facility:
+               ret = process_facility(pskb, ct, ctinfo, data, dataoff,
+                                      &pdu->h323_message_body.facility);
+               break;
+       case eH323_UU_PDU_h323_message_body_progress:
+               ret = process_progress(pskb, ct, ctinfo, data, dataoff,
+                                      &pdu->h323_message_body.progress);
+               break;
+       default:
+               DEBUGP("ip_ct_q931: Q.931 signal %d\n",
+                      pdu->h323_message_body.choice);
+               break;
+       }
+
+       if (ret < 0)
+               return -1;
+
+       if (pdu->options & eH323_UU_PDU_h245Control) {
+               for (i = 0; i < pdu->h245Control.count; i++) {
+                       ret = process_h245(pskb, ct, ctinfo, data, dataoff,
+                                          &pdu->h245Control.item[i]);
+                       if (ret < 0)
+                               return -1;
+               }
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int q931_help(struct sk_buff **pskb, struct ip_conntrack *ct,
+                    enum ip_conntrack_info ctinfo)
+{
+       static Q931 q931;
+       unsigned char *data = NULL;
+       int datalen;
+       int dataoff;
+       int ret;
+
+       /* Until there's been traffic both ways, don't look in packets. */
+       if (ctinfo != IP_CT_ESTABLISHED
+           && ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) {
+               return NF_ACCEPT;
+       }
+       DEBUGP("ip_ct_q931: skblen = %u\n", (*pskb)->len);
+
+       spin_lock_bh(&ip_h323_lock);
+
+       /* Process each TPKT */
+       while (get_tpkt_data(pskb, ct, ctinfo, &data, &datalen, &dataoff)) {
+               DEBUGP("ip_ct_q931: TPKT %u.%u.%u.%u->%u.%u.%u.%u, len=%d\n",
+                      NIPQUAD((*pskb)->nh.iph->saddr),
+                      NIPQUAD((*pskb)->nh.iph->daddr), datalen);
+
+               /* Decode Q.931 signal */
+               ret = DecodeQ931(data, datalen, &q931);
+               if (ret < 0) {
+                       if (net_ratelimit())
+                               printk("ip_ct_q931: decoding error: %s\n",
+                                      ret == H323_ERROR_BOUND ?
+                                      "out of bound" : "out of range");
+                       /* We don't drop when decoding error */
+                       break;
+               }
+
+               /* Process Q.931 signal */
+               if (process_q931(pskb, ct, ctinfo, &data, dataoff, &q931) < 0)
+                       goto drop;
+       }
+
+       spin_unlock_bh(&ip_h323_lock);
+       return NF_ACCEPT;
+
+      drop:
+       spin_unlock_bh(&ip_h323_lock);
+       if (net_ratelimit())
+               printk("ip_ct_q931: packet dropped\n");
+       return NF_DROP;
+}
+
+/****************************************************************************/
+static struct ip_conntrack_helper ip_conntrack_helper_q931 = {
+       .name = "Q.931",
+       .me = THIS_MODULE,
+       .max_expected = H323_RTP_CHANNEL_MAX * 4 + 4 /* T.120 and H.245 */ ,
+       .timeout = 240,
+       .tuple = {.src = {.u = {__constant_htons(Q931_PORT)}},
+                 .dst = {.protonum = IPPROTO_TCP}},
+       .mask = {.src = {.u = {0xFFFF}},
+                .dst = {.protonum = 0xFF}},
+       .help = q931_help
+};
+
+/****************************************************************************/
+void ip_conntrack_q931_expect(struct ip_conntrack *new,
+                             struct ip_conntrack_expect *this)
+{
+       write_lock_bh(&ip_conntrack_lock);
+       new->helper = &ip_conntrack_helper_q931;
+       write_unlock_bh(&ip_conntrack_lock);
+}
+
+/****************************************************************************/
+static unsigned char *get_udp_data(struct sk_buff **pskb, int *datalen)
+{
+       struct udphdr _uh, *uh;
+       int dataoff;
+
+       uh = skb_header_pointer(*pskb, (*pskb)->nh.iph->ihl * 4, sizeof(_uh),
+                               &_uh);
+       if (uh == NULL)
+               return NULL;
+       dataoff = (*pskb)->nh.iph->ihl * 4 + sizeof(_uh);
+       if (dataoff >= (*pskb)->len)
+               return NULL;
+       *datalen = (*pskb)->len - dataoff;
+       return skb_header_pointer(*pskb, dataoff, *datalen, h323_buffer);
+}
+
+/****************************************************************************/
+static struct ip_conntrack_expect *find_expect(struct ip_conntrack *ct,
+                                              u_int32_t ip, u_int16_t port)
+{
+       struct ip_conntrack_expect *exp;
+       struct ip_conntrack_tuple tuple;
+
+       tuple.src.ip = 0;
+       tuple.src.u.tcp.port = 0;
+       tuple.dst.ip = ip;
+       tuple.dst.u.tcp.port = htons(port);
+       tuple.dst.protonum = IPPROTO_TCP;
+
+       exp = __ip_conntrack_expect_find(&tuple);
+       if (exp->master == ct)
+               return exp;
+       return NULL;
+}
+
+/****************************************************************************/
+static int set_expect_timeout(struct ip_conntrack_expect *exp,
+                             unsigned timeout)
+{
+       if (!exp || !del_timer(&exp->timeout))
+               return 0;
+
+       exp->timeout.expires = jiffies + timeout * HZ;
+       add_timer(&exp->timeout);
+
+       return 1;
+}
+
+/****************************************************************************/
+static int expect_q931(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data,
+                      TransportAddress * addr, int count)
+{
+       struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+       int dir = CTINFO2DIR(ctinfo);
+       int ret = 0;
+       int i;
+       u_int32_t ip;
+       u_int16_t port;
+       struct ip_conntrack_expect *exp;
+
+       /* Look for the first related address */
+       for (i = 0; i < count; i++) {
+               if (get_h225_addr(*data, &addr[i], &ip, &port) &&
+                   ip == ct->tuplehash[dir].tuple.src.ip && port != 0)
+                       break;
+       }
+
+       if (i >= count)         /* Not found */
+               return 0;
+
+       /* Create expect for Q.931 */
+       if ((exp = ip_conntrack_expect_alloc(ct)) == NULL)
+               return -1;
+       exp->tuple.src.ip = gkrouted_only ?     /* only accept calls from GK? */
+           ct->tuplehash[!dir].tuple.src.ip : 0;
+       exp->tuple.src.u.tcp.port = 0;
+       exp->tuple.dst.ip = ct->tuplehash[!dir].tuple.dst.ip;
+       exp->tuple.dst.u.tcp.port = htons(port);
+       exp->tuple.dst.protonum = IPPROTO_TCP;
+       exp->mask.src.ip = gkrouted_only ? 0xFFFFFFFF : 0;
+       exp->mask.src.u.tcp.port = 0;
+       exp->mask.dst.ip = 0xFFFFFFFF;
+       exp->mask.dst.u.tcp.port = 0xFFFF;
+       exp->mask.dst.protonum = 0xFF;
+       exp->flags = IP_CT_EXPECT_PERMANENT;    /* Accept multiple calls */
+
+       if (nat_q931_hook) {    /* Need NAT */
+               ret = nat_q931_hook(pskb, ct, ctinfo, data, addr, i,
+                                   port, exp);
+       } else {                /* Conntrack only */
+               exp->expectfn = ip_conntrack_q931_expect;
+
+               if (ip_conntrack_expect_related(exp) == 0) {
+                       DEBUGP("ip_ct_ras: expect Q.931 "
+                              "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+                              NIPQUAD(exp->tuple.src.ip),
+                              ntohs(exp->tuple.src.u.tcp.port),
+                              NIPQUAD(exp->tuple.dst.ip),
+                              ntohs(exp->tuple.dst.u.tcp.port));
+
+                       /* Save port for looking up expect in processing RCF */
+                       info->sig_port[dir] = port;
+               } else
+                       ret = -1;
+       }
+
+       ip_conntrack_expect_put(exp);
+
+       return ret;
+}
+
+/****************************************************************************/
+static int process_grq(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, GatekeeperRequest * grq)
+{
+       DEBUGP("ip_ct_ras: GRQ\n");
+
+       if (set_ras_addr_hook)  /* NATed */
+               return set_ras_addr_hook(pskb, ct, ctinfo, data,
+                                        &grq->rasAddress, 1);
+       return 0;
+}
+
+/* Declare before using */
+static void ip_conntrack_ras_expect(struct ip_conntrack *new,
+                                   struct ip_conntrack_expect *this);
+
+/****************************************************************************/
+static int process_gcf(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, GatekeeperConfirm * gcf)
+{
+       int dir = CTINFO2DIR(ctinfo);
+       int ret = 0;
+       u_int32_t ip;
+       u_int16_t port;
+       struct ip_conntrack_expect *exp;
+
+       DEBUGP("ip_ct_ras: GCF\n");
+
+       if (!get_h225_addr(*data, &gcf->rasAddress, &ip, &port))
+               return 0;
+
+       /* Registration port is the same as discovery port */
+       if (ip == ct->tuplehash[dir].tuple.src.ip &&
+           port == ntohs(ct->tuplehash[dir].tuple.src.u.udp.port))
+               return 0;
+
+       /* Avoid RAS expectation loops. A GCF is never expected. */
+       if (test_bit(IPS_EXPECTED_BIT, &ct->status))
+               return 0;
+
+       /* Need new expect */
+       if ((exp = ip_conntrack_expect_alloc(ct)) == NULL)
+               return -1;
+       exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+       exp->tuple.src.u.tcp.port = 0;
+       exp->tuple.dst.ip = ip;
+       exp->tuple.dst.u.tcp.port = htons(port);
+       exp->tuple.dst.protonum = IPPROTO_UDP;
+       exp->mask.src.ip = 0xFFFFFFFF;
+       exp->mask.src.u.tcp.port = 0;
+       exp->mask.dst.ip = 0xFFFFFFFF;
+       exp->mask.dst.u.tcp.port = 0xFFFF;
+       exp->mask.dst.protonum = 0xFF;
+       exp->flags = 0;
+       exp->expectfn = ip_conntrack_ras_expect;
+       if (ip_conntrack_expect_related(exp) == 0) {
+               DEBUGP("ip_ct_ras: expect RAS "
+                      "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+                      NIPQUAD(exp->tuple.src.ip),
+                      ntohs(exp->tuple.src.u.tcp.port),
+                      NIPQUAD(exp->tuple.dst.ip),
+                      ntohs(exp->tuple.dst.u.tcp.port));
+       } else
+               ret = -1;
+
+       ip_conntrack_expect_put(exp);
+
+       return ret;
+}
+
+/****************************************************************************/
+static int process_rrq(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, RegistrationRequest * rrq)
+{
+       struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+       int ret;
+
+       DEBUGP("ip_ct_ras: RRQ\n");
+
+       ret = expect_q931(pskb, ct, ctinfo, data,
+                         rrq->callSignalAddress.item,
+                         rrq->callSignalAddress.count);
+       if (ret < 0)
+               return -1;
+
+       if (set_ras_addr_hook) {
+               ret = set_ras_addr_hook(pskb, ct, ctinfo, data,
+                                       rrq->rasAddress.item,
+                                       rrq->rasAddress.count);
+               if (ret < 0)
+                       return -1;
+       }
+
+       if (rrq->options & eRegistrationRequest_timeToLive) {
+               DEBUGP("ip_ct_ras: RRQ TTL = %u seconds\n", rrq->timeToLive);
+               info->timeout = rrq->timeToLive;
+       } else
+               info->timeout = 0;
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_rcf(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, RegistrationConfirm * rcf)
+{
+       struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+       int dir = CTINFO2DIR(ctinfo);
+       int ret;
+       struct ip_conntrack_expect *exp;
+
+       DEBUGP("ip_ct_ras: RCF\n");
+
+       if (set_sig_addr_hook) {
+               ret = set_sig_addr_hook(pskb, ct, ctinfo, data,
+                                       rcf->callSignalAddress.item,
+                                       rcf->callSignalAddress.count);
+               if (ret < 0)
+                       return -1;
+       }
+
+       if (rcf->options & eRegistrationConfirm_timeToLive) {
+               DEBUGP("ip_ct_ras: RCF TTL = %u seconds\n", rcf->timeToLive);
+               info->timeout = rcf->timeToLive;
+       }
+
+       if (info->timeout > 0) {
+               DEBUGP
+                   ("ip_ct_ras: set RAS connection timeout to %u seconds\n",
+                    info->timeout);
+               ip_ct_refresh_acct(ct, ctinfo, NULL, info->timeout * HZ);
+
+               /* Set expect timeout */
+               read_lock_bh(&ip_conntrack_lock);
+               exp = find_expect(ct, ct->tuplehash[dir].tuple.dst.ip,
+                                 info->sig_port[!dir]);
+               if (exp) {
+                       DEBUGP("ip_ct_ras: set Q.931 expect "
+                              "(%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu) "
+                              "timeout to %u seconds\n",
+                              NIPQUAD(exp->tuple.src.ip),
+                              ntohs(exp->tuple.src.u.tcp.port),
+                              NIPQUAD(exp->tuple.dst.ip),
+                              ntohs(exp->tuple.dst.u.tcp.port),
+                              info->timeout);
+                       set_expect_timeout(exp, info->timeout);
+               }
+               read_unlock_bh(&ip_conntrack_lock);
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_urq(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, UnregistrationRequest * urq)
+{
+       struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+       int dir = CTINFO2DIR(ctinfo);
+       int ret;
+
+       DEBUGP("ip_ct_ras: URQ\n");
+
+       if (set_sig_addr_hook) {
+               ret = set_sig_addr_hook(pskb, ct, ctinfo, data,
+                                       urq->callSignalAddress.item,
+                                       urq->callSignalAddress.count);
+               if (ret < 0)
+                       return -1;
+       }
+
+       /* Clear old expect */
+       ip_ct_remove_expectations(ct);
+       info->sig_port[dir] = 0;
+       info->sig_port[!dir] = 0;
+
+       /* Give it 30 seconds for UCF or URJ */
+       ip_ct_refresh_acct(ct, ctinfo, NULL, 30 * HZ);
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_arq(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, AdmissionRequest * arq)
+{
+       struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+       int dir = CTINFO2DIR(ctinfo);
+       u_int32_t ip;
+       u_int16_t port;
+
+       DEBUGP("ip_ct_ras: ARQ\n");
+
+       if ((arq->options & eAdmissionRequest_destCallSignalAddress) &&
+           get_h225_addr(*data, &arq->destCallSignalAddress, &ip, &port) &&
+           ip == ct->tuplehash[dir].tuple.src.ip &&
+           port == info->sig_port[dir] && set_h225_addr_hook) {
+               /* Answering ARQ */
+               return set_h225_addr_hook(pskb, data, 0,
+                                         &arq->destCallSignalAddress,
+                                         ct->tuplehash[!dir].tuple.dst.ip,
+                                         info->sig_port[!dir]);
+       }
+
+       if ((arq->options & eAdmissionRequest_srcCallSignalAddress) &&
+           get_h225_addr(*data, &arq->srcCallSignalAddress, &ip, &port) &&
+           ip == ct->tuplehash[dir].tuple.src.ip && set_h225_addr_hook) {
+               /* Calling ARQ */
+               return set_h225_addr_hook(pskb, data, 0,
+                                         &arq->srcCallSignalAddress,
+                                         ct->tuplehash[!dir].tuple.dst.ip,
+                                         port);
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_acf(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, AdmissionConfirm * acf)
+{
+       int dir = CTINFO2DIR(ctinfo);
+       int ret = 0;
+       u_int32_t ip;
+       u_int16_t port;
+       struct ip_conntrack_expect *exp;
+
+       DEBUGP("ip_ct_ras: ACF\n");
+
+       if (!get_h225_addr(*data, &acf->destCallSignalAddress, &ip, &port))
+               return 0;
+
+       if (ip == ct->tuplehash[dir].tuple.dst.ip) {    /* Answering ACF */
+               if (set_sig_addr_hook)
+                       return set_sig_addr_hook(pskb, ct, ctinfo, data,
+                                                &acf->destCallSignalAddress,
+                                                1);
+               return 0;
+       }
+
+       /* Need new expect */
+       if ((exp = ip_conntrack_expect_alloc(ct)) == NULL)
+               return -1;
+       exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+       exp->tuple.src.u.tcp.port = 0;
+       exp->tuple.dst.ip = ip;
+       exp->tuple.dst.u.tcp.port = htons(port);
+       exp->tuple.dst.protonum = IPPROTO_TCP;
+       exp->mask.src.ip = 0xFFFFFFFF;
+       exp->mask.src.u.tcp.port = 0;
+       exp->mask.dst.ip = 0xFFFFFFFF;
+       exp->mask.dst.u.tcp.port = 0xFFFF;
+       exp->mask.dst.protonum = 0xFF;
+       exp->flags = IP_CT_EXPECT_PERMANENT;
+       exp->expectfn = ip_conntrack_q931_expect;
+
+       if (ip_conntrack_expect_related(exp) == 0) {
+               DEBUGP("ip_ct_ras: expect Q.931 "
+                      "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+                      NIPQUAD(exp->tuple.src.ip),
+                      ntohs(exp->tuple.src.u.tcp.port),
+                      NIPQUAD(exp->tuple.dst.ip),
+                      ntohs(exp->tuple.dst.u.tcp.port));
+       } else
+               ret = -1;
+
+       ip_conntrack_expect_put(exp);
+
+       return ret;
+}
+
+/****************************************************************************/
+static int process_lrq(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, LocationRequest * lrq)
+{
+       DEBUGP("ip_ct_ras: LRQ\n");
+
+       if (set_ras_addr_hook)
+               return set_ras_addr_hook(pskb, ct, ctinfo, data,
+                                        &lrq->replyAddress, 1);
+       return 0;
+}
+
+/****************************************************************************/
+static int process_lcf(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, LocationConfirm * lcf)
+{
+       int dir = CTINFO2DIR(ctinfo);
+       int ret = 0;
+       u_int32_t ip;
+       u_int16_t port;
+       struct ip_conntrack_expect *exp = NULL;
+
+       DEBUGP("ip_ct_ras: LCF\n");
+
+       if (!get_h225_addr(*data, &lcf->callSignalAddress, &ip, &port))
+               return 0;
+
+       /* Need new expect for call signal */
+       if ((exp = ip_conntrack_expect_alloc(ct)) == NULL)
+               return -1;
+       exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+       exp->tuple.src.u.tcp.port = 0;
+       exp->tuple.dst.ip = ip;
+       exp->tuple.dst.u.tcp.port = htons(port);
+       exp->tuple.dst.protonum = IPPROTO_TCP;
+       exp->mask.src.ip = 0xFFFFFFFF;
+       exp->mask.src.u.tcp.port = 0;
+       exp->mask.dst.ip = 0xFFFFFFFF;
+       exp->mask.dst.u.tcp.port = 0xFFFF;
+       exp->mask.dst.protonum = 0xFF;
+       exp->flags = IP_CT_EXPECT_PERMANENT;
+       exp->expectfn = ip_conntrack_q931_expect;
+
+       if (ip_conntrack_expect_related(exp) == 0) {
+               DEBUGP("ip_ct_ras: expect Q.931 "
+                      "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+                      NIPQUAD(exp->tuple.src.ip),
+                      ntohs(exp->tuple.src.u.tcp.port),
+                      NIPQUAD(exp->tuple.dst.ip),
+                      ntohs(exp->tuple.dst.u.tcp.port));
+       } else
+               ret = -1;
+
+       ip_conntrack_expect_put(exp);
+
+       /* Ignore rasAddress */
+
+       return ret;
+}
+
+/****************************************************************************/
+static int process_irr(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, InfoRequestResponse * irr)
+{
+       int ret;
+
+       DEBUGP("ip_ct_ras: IRR\n");
+
+       if (set_ras_addr_hook) {
+               ret = set_ras_addr_hook(pskb, ct, ctinfo, data,
+                                       &irr->rasAddress, 1);
+               if (ret < 0)
+                       return -1;
+       }
+
+       if (set_sig_addr_hook) {
+               ret = set_sig_addr_hook(pskb, ct, ctinfo, data,
+                                       irr->callSignalAddress.item,
+                                       irr->callSignalAddress.count);
+               if (ret < 0)
+                       return -1;
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int process_ras(struct sk_buff **pskb, struct ip_conntrack *ct,
+                      enum ip_conntrack_info ctinfo,
+                      unsigned char **data, RasMessage * ras)
+{
+       switch (ras->choice) {
+       case eRasMessage_gatekeeperRequest:
+               return process_grq(pskb, ct, ctinfo, data,
+                                  &ras->gatekeeperRequest);
+       case eRasMessage_gatekeeperConfirm:
+               return process_gcf(pskb, ct, ctinfo, data,
+                                  &ras->gatekeeperConfirm);
+       case eRasMessage_registrationRequest:
+               return process_rrq(pskb, ct, ctinfo, data,
+                                  &ras->registrationRequest);
+       case eRasMessage_registrationConfirm:
+               return process_rcf(pskb, ct, ctinfo, data,
+                                  &ras->registrationConfirm);
+       case eRasMessage_unregistrationRequest:
+               return process_urq(pskb, ct, ctinfo, data,
+                                  &ras->unregistrationRequest);
+       case eRasMessage_admissionRequest:
+               return process_arq(pskb, ct, ctinfo, data,
+                                  &ras->admissionRequest);
+       case eRasMessage_admissionConfirm:
+               return process_acf(pskb, ct, ctinfo, data,
+                                  &ras->admissionConfirm);
+       case eRasMessage_locationRequest:
+               return process_lrq(pskb, ct, ctinfo, data,
+                                  &ras->locationRequest);
+       case eRasMessage_locationConfirm:
+               return process_lcf(pskb, ct, ctinfo, data,
+                                  &ras->locationConfirm);
+       case eRasMessage_infoRequestResponse:
+               return process_irr(pskb, ct, ctinfo, data,
+                                  &ras->infoRequestResponse);
+       default:
+               DEBUGP("ip_ct_ras: RAS message %d\n", ras->choice);
+               break;
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int ras_help(struct sk_buff **pskb, struct ip_conntrack *ct,
+                   enum ip_conntrack_info ctinfo)
+{
+       static RasMessage ras;
+       unsigned char *data;
+       int datalen = 0;
+       int ret;
+
+       DEBUGP("ip_ct_ras: skblen = %u\n", (*pskb)->len);
+
+       spin_lock_bh(&ip_h323_lock);
+
+       /* Get UDP data */
+       data = get_udp_data(pskb, &datalen);
+       if (data == NULL)
+               goto accept;
+       DEBUGP("ip_ct_ras: RAS message %u.%u.%u.%u->%u.%u.%u.%u, len=%d\n",
+              NIPQUAD((*pskb)->nh.iph->saddr),
+              NIPQUAD((*pskb)->nh.iph->daddr), datalen);
+
+       /* Decode RAS message */
+       ret = DecodeRasMessage(data, datalen, &ras);
+       if (ret < 0) {
+               if (net_ratelimit())
+                       printk("ip_ct_ras: decoding error: %s\n",
+                              ret == H323_ERROR_BOUND ?
+                              "out of bound" : "out of range");
+               goto accept;
+       }
+
+       /* Process RAS message */
+       if (process_ras(pskb, ct, ctinfo, &data, &ras) < 0)
+               goto drop;
+
+      accept:
+       spin_unlock_bh(&ip_h323_lock);
+       return NF_ACCEPT;
+
+      drop:
+       spin_unlock_bh(&ip_h323_lock);
+       if (net_ratelimit())
+               printk("ip_ct_ras: packet dropped\n");
+       return NF_DROP;
+}
+
+/****************************************************************************/
+static struct ip_conntrack_helper ip_conntrack_helper_ras = {
+       .name = "RAS",
+       .me = THIS_MODULE,
+       .max_expected = 32,
+       .timeout = 240,
+       .tuple = {.src = {.u = {__constant_htons(RAS_PORT)}},
+                 .dst = {.protonum = IPPROTO_UDP}},
+       .mask = {.src = {.u = {0xFFFE}},
+                .dst = {.protonum = 0xFF}},
+       .help = ras_help,
+};
+
+/****************************************************************************/
+static void ip_conntrack_ras_expect(struct ip_conntrack *new,
+                                   struct ip_conntrack_expect *this)
+{
+       write_lock_bh(&ip_conntrack_lock);
+       new->helper = &ip_conntrack_helper_ras;
+       write_unlock_bh(&ip_conntrack_lock);
+}
+
+/****************************************************************************/
+/* Not __exit - called from init() */
+static void fini(void)
+{
+       ip_conntrack_helper_unregister(&ip_conntrack_helper_ras);
+       ip_conntrack_helper_unregister(&ip_conntrack_helper_q931);
+       kfree(h323_buffer);
+       DEBUGP("ip_ct_h323: fini\n");
+}
+
+/****************************************************************************/
+static int __init init(void)
+{
+       int ret;
+
+       h323_buffer = kmalloc(65536, GFP_KERNEL);
+       if (!h323_buffer)
+               return -ENOMEM;
+       if ((ret = ip_conntrack_helper_register(&ip_conntrack_helper_q931)) ||
+           (ret = ip_conntrack_helper_register(&ip_conntrack_helper_ras))) {
+               fini();
+               return ret;
+       }
+
+       DEBUGP("ip_ct_h323: init success\n");
+       return 0;
+}
+
+/****************************************************************************/
+module_init(init);
+module_exit(fini);
+
+EXPORT_SYMBOL(get_h245_addr);
+EXPORT_SYMBOL(get_h225_addr);
+EXPORT_SYMBOL(ip_conntrack_h245_expect);
+EXPORT_SYMBOL(ip_conntrack_q931_expect);
+EXPORT_SYMBOL(set_h245_addr_hook);
+EXPORT_SYMBOL(set_h225_addr_hook);
+EXPORT_SYMBOL(set_sig_addr_hook);
+EXPORT_SYMBOL(set_ras_addr_hook);
+EXPORT_SYMBOL(nat_rtp_rtcp_hook);
+EXPORT_SYMBOL(nat_t120_hook);
+EXPORT_SYMBOL(nat_h245_hook);
+EXPORT_SYMBOL(nat_q931_hook);
+
+MODULE_AUTHOR("Jing Min Zhao <zhaojingmin@users.sourceforge.net>");
+MODULE_DESCRIPTION("H.323 connection tracking helper");
+MODULE_LICENSE("GPL");
diff --git a/net/ipv4/netfilter/ip_conntrack_helper_h323_asn1.c b/net/ipv4/netfilter/ip_conntrack_helper_h323_asn1.c
new file mode 100644 (file)
index 0000000..afa5251
--- /dev/null
@@ -0,0 +1,870 @@
+/****************************************************************************
+ * ip_conntrack_helper_h323_asn1.c - BER and PER decoding library for H.323
+ *                                  conntrack/NAT module.
+ *
+ * Copyright (c) 2006 by Jing Min Zhao <zhaojingmin@hotmail.com>
+ *
+ * This source code is licensed under General Public License version 2.
+ *
+ * See ip_conntrack_helper_h323_asn1.h for details.
+ *
+ ****************************************************************************/
+
+#ifdef __KERNEL__
+#include <linux/kernel.h>
+#else
+#include <stdio.h>
+#endif
+#include "ip_conntrack_helper_h323_asn1.h"
+
+/* Trace Flag */
+#ifndef H323_TRACE
+#define H323_TRACE 0
+#endif
+
+#if H323_TRACE
+#define TAB_SIZE 4
+#define IFTHEN(cond, act) if(cond){act;}
+#ifdef __KERNEL__
+#define PRINT printk
+#else
+#define PRINT printf
+#endif
+#define FNAME(name) name,
+#else
+#define IFTHEN(cond, act)
+#define PRINT(fmt, args...)
+#define FNAME(name)
+#endif
+
+/* ASN.1 Types */
+#define NUL 0
+#define BOOL 1
+#define OID 2
+#define INT 3
+#define ENUM 4
+#define BITSTR 5
+#define NUMSTR 6
+#define NUMDGT 6
+#define TBCDSTR 6
+#define OCTSTR 7
+#define PRTSTR 7
+#define IA5STR 7
+#define GENSTR 7
+#define BMPSTR 8
+#define SEQ 9
+#define SET 9
+#define SEQOF 10
+#define SETOF 10
+#define CHOICE 11
+
+/* Constraint Types */
+#define FIXD 0
+/* #define BITS 1-8 */
+#define BYTE 9
+#define WORD 10
+#define CONS 11
+#define SEMI 12
+#define UNCO 13
+
+/* ASN.1 Type Attributes */
+#define SKIP 0
+#define STOP 1
+#define DECODE 2
+#define EXT 4
+#define OPEN 8
+#define OPT 16
+
+
+/* ASN.1 Field Structure */
+typedef struct field_t {
+#if H323_TRACE
+       char *name;
+#endif
+       unsigned char type;
+       unsigned char sz;
+       unsigned char lb;
+       unsigned char ub;
+       unsigned short attr;
+       unsigned short offset;
+       struct field_t *fields;
+} field_t;
+
+/* Bit Stream */
+typedef struct {
+       unsigned char *buf;
+       unsigned char *beg;
+       unsigned char *end;
+       unsigned char *cur;
+       unsigned bit;
+} bitstr_t;
+
+/* Tool Functions */
+#define INC_BIT(bs) if((++bs->bit)>7){bs->cur++;bs->bit=0;}
+#define INC_BITS(bs,b) if((bs->bit+=b)>7){bs->cur+=bs->bit>>3;bs->bit&=7;}
+#define BYTE_ALIGN(bs) if(bs->bit){bs->cur++;bs->bit=0;}
+#define CHECK_BOUND(bs,n) if(bs->cur+(n)>bs->end)return(H323_ERROR_BOUND)
+static unsigned get_len(bitstr_t * bs);
+static unsigned get_bit(bitstr_t * bs);
+static unsigned get_bits(bitstr_t * bs, unsigned b);
+static unsigned get_bitmap(bitstr_t * bs, unsigned b);
+static unsigned get_uint(bitstr_t * bs, int b);
+
+/* Decoder Functions */
+static int decode_nul(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_bool(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_oid(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_int(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_enum(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_bitstr(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_numstr(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_octstr(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_bmpstr(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_seq(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_seqof(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_choice(bitstr_t * bs, field_t * f, char *base, int level);
+
+/* Decoder Functions Vector */
+typedef int (*decoder_t) (bitstr_t *, field_t *, char *, int);
+static decoder_t Decoders[] = {
+       decode_nul,
+       decode_bool,
+       decode_oid,
+       decode_int,
+       decode_enum,
+       decode_bitstr,
+       decode_numstr,
+       decode_octstr,
+       decode_bmpstr,
+       decode_seq,
+       decode_seqof,
+       decode_choice,
+};
+
+/****************************************************************************
+ * H.323 Types
+ ****************************************************************************/
+#include "ip_conntrack_helper_h323_types.c"
+
+/****************************************************************************
+ * Functions
+ ****************************************************************************/
+/* Assume bs is aligned && v < 16384 */
+unsigned get_len(bitstr_t * bs)
+{
+       unsigned v;
+
+       v = *bs->cur++;
+
+       if (v & 0x80) {
+               v &= 0x3f;
+               v <<= 8;
+               v += *bs->cur++;
+       }
+
+       return v;
+}
+
+/****************************************************************************/
+unsigned get_bit(bitstr_t * bs)
+{
+       unsigned b = (*bs->cur) & (0x80 >> bs->bit);
+
+       INC_BIT(bs);
+
+       return b;
+}
+
+/****************************************************************************/
+/* Assume b <= 8 */
+unsigned get_bits(bitstr_t * bs, unsigned b)
+{
+       unsigned v, l;
+
+       v = (*bs->cur) & (0xffU >> bs->bit);
+       l = b + bs->bit;
+
+       if (l < 8) {
+               v >>= 8 - l;
+               bs->bit = l;
+       } else if (l == 8) {
+               bs->cur++;
+               bs->bit = 0;
+       } else {                /* l > 8 */
+
+               v <<= 8;
+               v += *(++bs->cur);
+               v >>= 16 - l;
+               bs->bit = l - 8;
+       }
+
+       return v;
+}
+
+/****************************************************************************/
+/* Assume b <= 32 */
+unsigned get_bitmap(bitstr_t * bs, unsigned b)
+{
+       unsigned v, l, shift, bytes;
+
+       if (!b)
+               return 0;
+
+       l = bs->bit + b;
+
+       if (l < 8) {
+               v = (unsigned) (*bs->cur) << (bs->bit + 24);
+               bs->bit = l;
+       } else if (l == 8) {
+               v = (unsigned) (*bs->cur++) << (bs->bit + 24);
+               bs->bit = 0;
+       } else {
+               for (bytes = l >> 3, shift = 24, v = 0; bytes;
+                    bytes--, shift -= 8)
+                       v |= (unsigned) (*bs->cur++) << shift;
+
+               if (l < 32) {
+                       v |= (unsigned) (*bs->cur) << shift;
+                       v <<= bs->bit;
+               } else if (l > 32) {
+                       v <<= bs->bit;
+                       v |= (*bs->cur) >> (8 - bs->bit);
+               }
+
+               bs->bit = l & 0x7;
+       }
+
+       v &= 0xffffffff << (32 - b);
+
+       return v;
+}
+
+/****************************************************************************
+ * Assume bs is aligned and sizeof(unsigned int) == 4
+ ****************************************************************************/
+unsigned get_uint(bitstr_t * bs, int b)
+{
+       unsigned v = 0;
+
+       switch (b) {
+       case 4:
+               v |= *bs->cur++;
+               v <<= 8;
+       case 3:
+               v |= *bs->cur++;
+               v <<= 8;
+       case 2:
+               v |= *bs->cur++;
+               v <<= 8;
+       case 1:
+               v |= *bs->cur++;
+               break;
+       }
+       return v;
+}
+
+/****************************************************************************/
+int decode_nul(bitstr_t * bs, field_t * f, char *base, int level)
+{
+       PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+       return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_bool(bitstr_t * bs, field_t * f, char *base, int level)
+{
+       PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+       INC_BIT(bs);
+
+       CHECK_BOUND(bs, 0);
+       return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_oid(bitstr_t * bs, field_t * f, char *base, int level)
+{
+       int len;
+
+       PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+       BYTE_ALIGN(bs);
+       CHECK_BOUND(bs, 1);
+       len = *bs->cur++;
+       bs->cur += len;
+
+       CHECK_BOUND(bs, 0);
+       return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_int(bitstr_t * bs, field_t * f, char *base, int level)
+{
+       unsigned len;
+
+       PRINT("%*.s%s", level * TAB_SIZE, " ", f->name);
+
+       switch (f->sz) {
+       case BYTE:              /* Range == 256 */
+               BYTE_ALIGN(bs);
+               bs->cur++;
+               break;
+       case WORD:              /* 257 <= Range <= 64K */
+               BYTE_ALIGN(bs);
+               bs->cur += 2;
+               break;
+       case CONS:              /* 64K < Range < 4G */
+               len = get_bits(bs, 2) + 1;
+               BYTE_ALIGN(bs);
+               if (base && (f->attr & DECODE)) {       /* timeToLive */
+                       unsigned v = get_uint(bs, len) + f->lb;
+                       PRINT(" = %u", v);
+                       *((unsigned *) (base + f->offset)) = v;
+               }
+               bs->cur += len;
+               break;
+       case UNCO:
+               BYTE_ALIGN(bs);
+               CHECK_BOUND(bs, 2);
+               len = get_len(bs);
+               bs->cur += len;
+               break;
+       default:                /* 2 <= Range <= 255 */
+               INC_BITS(bs, f->sz);
+               break;
+       }
+
+       PRINT("\n");
+
+       CHECK_BOUND(bs, 0);
+       return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_enum(bitstr_t * bs, field_t * f, char *base, int level)
+{
+       PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+       if ((f->attr & EXT) && get_bit(bs)) {
+               INC_BITS(bs, 7);
+       } else {
+               INC_BITS(bs, f->sz);
+       }
+
+       CHECK_BOUND(bs, 0);
+       return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_bitstr(bitstr_t * bs, field_t * f, char *base, int level)
+{
+       unsigned len;
+
+       PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+       BYTE_ALIGN(bs);
+       switch (f->sz) {
+       case FIXD:              /* fixed length > 16 */
+               len = f->lb;
+               break;
+       case WORD:              /* 2-byte length */
+               CHECK_BOUND(bs, 2);
+               len = (*bs->cur++) << 8;
+               len += (*bs->cur++) + f->lb;
+               break;
+       case SEMI:
+               CHECK_BOUND(bs, 2);
+               len = get_len(bs);
+               break;
+       default:
+               len = 0;
+               break;
+       }
+
+       bs->cur += len >> 3;
+       bs->bit = len & 7;
+
+       CHECK_BOUND(bs, 0);
+       return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_numstr(bitstr_t * bs, field_t * f, char *base, int level)
+{
+       unsigned len;
+
+       PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+       /* 2 <= Range <= 255 */
+       len = get_bits(bs, f->sz) + f->lb;
+
+       BYTE_ALIGN(bs);
+       INC_BITS(bs, (len << 2));
+
+       CHECK_BOUND(bs, 0);
+       return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_octstr(bitstr_t * bs, field_t * f, char *base, int level)
+{
+       unsigned len;
+
+       PRINT("%*.s%s", level * TAB_SIZE, " ", f->name);
+
+       switch (f->sz) {
+       case FIXD:              /* Range == 1 */
+               if (f->lb > 2) {
+                       BYTE_ALIGN(bs);
+                       if (base && (f->attr & DECODE)) {
+                               /* The IP Address */
+                               IFTHEN(f->lb == 4,
+                                      PRINT(" = %d.%d.%d.%d:%d",
+                                            bs->cur[0], bs->cur[1],
+                                            bs->cur[2], bs->cur[3],
+                                            bs->cur[4] * 256 + bs->cur[5]));
+                               *((unsigned *) (base + f->offset)) =
+                                   bs->cur - bs->buf;
+                       }
+               }
+               len = f->lb;
+               break;
+       case BYTE:              /* Range == 256 */
+               BYTE_ALIGN(bs);
+               CHECK_BOUND(bs, 1);
+               len = (*bs->cur++) + f->lb;
+               break;
+       case SEMI:
+               BYTE_ALIGN(bs);
+               CHECK_BOUND(bs, 2);
+               len = get_len(bs) + f->lb;
+               break;
+       default:                /* 2 <= Range <= 255 */
+               len = get_bits(bs, f->sz) + f->lb;
+               BYTE_ALIGN(bs);
+               break;
+       }
+
+       bs->cur += len;
+
+       PRINT("\n");
+
+       CHECK_BOUND(bs, 0);
+       return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_bmpstr(bitstr_t * bs, field_t * f, char *base, int level)
+{
+       unsigned len;
+
+       PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+       switch (f->sz) {
+       case BYTE:              /* Range == 256 */
+               BYTE_ALIGN(bs);
+               CHECK_BOUND(bs, 1);
+               len = (*bs->cur++) + f->lb;
+               break;
+       default:                /* 2 <= Range <= 255 */
+               len = get_bits(bs, f->sz) + f->lb;
+               BYTE_ALIGN(bs);
+               break;
+       }
+
+       bs->cur += len << 1;
+
+       CHECK_BOUND(bs, 0);
+       return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_seq(bitstr_t * bs, field_t * f, char *base, int level)
+{
+       unsigned ext, bmp, i, opt, len = 0, bmp2, bmp2_len;
+       int err;
+       field_t *son;
+       unsigned char *beg = NULL;
+
+       PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+       /* Decode? */
+       base = (base && (f->attr & DECODE)) ? base + f->offset : NULL;
+
+       /* Extensible? */
+       ext = (f->attr & EXT) ? get_bit(bs) : 0;
+
+       /* Get fields bitmap */
+       bmp = get_bitmap(bs, f->sz);
+       if (base)
+               *(unsigned *) base = bmp;
+
+       /* Decode the root components */
+       for (i = opt = 0, son = f->fields; i < f->lb; i++, son++) {
+               if (son->attr & STOP) {
+                       PRINT("%*.s%s\n", (level + 1) * TAB_SIZE, " ",
+                             son->name);
+                       return H323_ERROR_STOP;
+               }
+
+               if (son->attr & OPT) {  /* Optional component */
+                       if (!((0x80000000U >> (opt++)) & bmp))  /* Not exist */
+                               continue;
+               }
+
+               /* Decode */
+               if (son->attr & OPEN) { /* Open field */
+                       CHECK_BOUND(bs, 2);
+                       len = get_len(bs);
+                       CHECK_BOUND(bs, len);
+                       if (!base) {
+                               PRINT("%*.s%s\n", (level + 1) * TAB_SIZE,
+                                     " ", son->name);
+                               bs->cur += len;
+                               continue;
+                       }
+                       beg = bs->cur;
+
+                       /* Decode */
+                       if ((err = (Decoders[son->type]) (bs, son, base,
+                                                         level + 1)) >
+                           H323_ERROR_STOP)
+                               return err;
+
+                       bs->cur = beg + len;
+                       bs->bit = 0;
+               } else if ((err = (Decoders[son->type]) (bs, son, base,
+                                                        level + 1)))
+                       return err;
+       }
+
+       /* No extension? */
+       if (!ext)
+               return H323_ERROR_NONE;
+
+       /* Get the extension bitmap */
+       bmp2_len = get_bits(bs, 7) + 1;
+       CHECK_BOUND(bs, (bmp2_len + 7) >> 3);
+       bmp2 = get_bitmap(bs, bmp2_len);
+       bmp |= bmp2 >> f->sz;
+       if (base)
+               *(unsigned *) base = bmp;
+       BYTE_ALIGN(bs);
+
+       /* Decode the extension components */
+       for (opt = 0; opt < bmp2_len; opt++, i++, son++) {
+               if (son->attr & STOP) {
+                       PRINT("%*.s%s\n", (level + 1) * TAB_SIZE, " ",
+                             son->name);
+                       return H323_ERROR_STOP;
+               }
+
+               if (!((0x80000000 >> opt) & bmp2))      /* Not present */
+                       continue;
+
+               /* Check Range */
+               if (i >= f->ub) {       /* Newer Version? */
+                       CHECK_BOUND(bs, 2);
+                       len = get_len(bs);
+                       CHECK_BOUND(bs, len);
+                       bs->cur += len;
+                       continue;
+               }
+
+               CHECK_BOUND(bs, 2);
+               len = get_len(bs);
+               CHECK_BOUND(bs, len);
+               if (!base || !(son->attr & DECODE)) {
+                       PRINT("%*.s%s\n", (level + 1) * TAB_SIZE, " ",
+                             son->name);
+                       bs->cur += len;
+                       continue;
+               }
+               beg = bs->cur;
+
+               if ((err = (Decoders[son->type]) (bs, son, base,
+                                                 level + 1)) >
+                   H323_ERROR_STOP)
+                       return err;
+
+               bs->cur = beg + len;
+               bs->bit = 0;
+       }
+       return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_seqof(bitstr_t * bs, field_t * f, char *base, int level)
+{
+       unsigned count, effective_count = 0, i, len = 0;
+       int err;
+       field_t *son;
+       unsigned char *beg = NULL;
+
+       PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+       /* Decode? */
+       base = (base && (f->attr & DECODE)) ? base + f->offset : NULL;
+
+       /* Decode item count */
+       switch (f->sz) {
+       case BYTE:
+               BYTE_ALIGN(bs);
+               CHECK_BOUND(bs, 1);
+               count = *bs->cur++;
+               break;
+       case WORD:
+               BYTE_ALIGN(bs);
+               CHECK_BOUND(bs, 2);
+               count = *bs->cur++;
+               count <<= 8;
+               count = *bs->cur++;
+               break;
+       case SEMI:
+               BYTE_ALIGN(bs);
+               CHECK_BOUND(bs, 2);
+               count = get_len(bs);
+               break;
+       default:
+               count = get_bits(bs, f->sz);
+               break;
+       }
+       count += f->lb;
+
+       /* Write Count */
+       if (base) {
+               effective_count = count > f->ub ? f->ub : count;
+               *(unsigned *) base = effective_count;
+               base += sizeof(unsigned);
+       }
+
+       /* Decode nested field */
+       son = f->fields;
+       if (base)
+               base -= son->offset;
+       for (i = 0; i < count; i++) {
+               if (son->attr & OPEN) {
+                       BYTE_ALIGN(bs);
+                       len = get_len(bs);
+                       CHECK_BOUND(bs, len);
+                       if (!base || !(son->attr & DECODE)) {
+                               PRINT("%*.s%s\n", (level + 1) * TAB_SIZE,
+                                     " ", son->name);
+                               bs->cur += len;
+                               continue;
+                       }
+                       beg = bs->cur;
+
+                       if ((err = (Decoders[son->type]) (bs, son,
+                                                         i <
+                                                         effective_count ?
+                                                         base : NULL,
+                                                         level + 1)) >
+                           H323_ERROR_STOP)
+                               return err;
+
+                       bs->cur = beg + len;
+                       bs->bit = 0;
+               } else
+                   if ((err = (Decoders[son->type]) (bs, son,
+                                                     i < effective_count ?
+                                                     base : NULL,
+                                                     level + 1)))
+                       return err;
+
+               if (base)
+                       base += son->offset;
+       }
+
+       return H323_ERROR_NONE;
+}
+
+
+/****************************************************************************/
+int decode_choice(bitstr_t * bs, field_t * f, char *base, int level)
+{
+       unsigned type, ext, len = 0;
+       int err;
+       field_t *son;
+       unsigned char *beg = NULL;
+
+       PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+       /* Decode? */
+       base = (base && (f->attr & DECODE)) ? base + f->offset : NULL;
+
+       /* Decode the choice index number */
+       if ((f->attr & EXT) && get_bit(bs)) {
+               ext = 1;
+               type = get_bits(bs, 7) + f->lb;
+       } else {
+               ext = 0;
+               type = get_bits(bs, f->sz);
+       }
+
+       /* Check Range */
+       if (type >= f->ub) {    /* Newer version? */
+               BYTE_ALIGN(bs);
+               len = get_len(bs);
+               CHECK_BOUND(bs, len);
+               bs->cur += len;
+               return H323_ERROR_NONE;
+       }
+
+       /* Write Type */
+       if (base)
+               *(unsigned *) base = type;
+
+       /* Transfer to son level */
+       son = &f->fields[type];
+       if (son->attr & STOP) {
+               PRINT("%*.s%s\n", (level + 1) * TAB_SIZE, " ", son->name);
+               return H323_ERROR_STOP;
+       }
+
+       if (ext || (son->attr & OPEN)) {
+               BYTE_ALIGN(bs);
+               len = get_len(bs);
+               CHECK_BOUND(bs, len);
+               if (!base || !(son->attr & DECODE)) {
+                       PRINT("%*.s%s\n", (level + 1) * TAB_SIZE, " ",
+                             son->name);
+                       bs->cur += len;
+                       return H323_ERROR_NONE;
+               }
+               beg = bs->cur;
+
+               if ((err = (Decoders[son->type]) (bs, son, base, level + 1)) >
+                   H323_ERROR_STOP)
+                       return err;
+
+               bs->cur = beg + len;
+               bs->bit = 0;
+       } else if ((err = (Decoders[son->type]) (bs, son, base, level + 1)))
+               return err;
+
+       return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int DecodeRasMessage(unsigned char *buf, size_t sz, RasMessage * ras)
+{
+       static field_t ras_message = {
+               FNAME("RasMessage") CHOICE, 5, 24, 32, DECODE | EXT,
+               0, _RasMessage
+       };
+       bitstr_t bs;
+
+       bs.buf = bs.beg = bs.cur = buf;
+       bs.end = buf + sz;
+       bs.bit = 0;
+
+       return decode_choice(&bs, &ras_message, (char *) ras, 0);
+}
+
+/****************************************************************************/
+static int DecodeH323_UserInformation(unsigned char *buf, unsigned char *beg,
+                                     size_t sz, H323_UserInformation * uuie)
+{
+       static field_t h323_userinformation = {
+               FNAME("H323-UserInformation") SEQ, 1, 2, 2, DECODE | EXT,
+               0, _H323_UserInformation
+       };
+       bitstr_t bs;
+
+       bs.buf = buf;
+       bs.beg = bs.cur = beg;
+       bs.end = beg + sz;
+       bs.bit = 0;
+
+       return decode_seq(&bs, &h323_userinformation, (char *) uuie, 0);
+}
+
+/****************************************************************************/
+int DecodeMultimediaSystemControlMessage(unsigned char *buf, size_t sz,
+                                        MultimediaSystemControlMessage *
+                                        mscm)
+{
+       static field_t multimediasystemcontrolmessage = {
+               FNAME("MultimediaSystemControlMessage") CHOICE, 2, 4, 4,
+               DECODE | EXT, 0, _MultimediaSystemControlMessage
+       };
+       bitstr_t bs;
+
+       bs.buf = bs.beg = bs.cur = buf;
+       bs.end = buf + sz;
+       bs.bit = 0;
+
+       return decode_choice(&bs, &multimediasystemcontrolmessage,
+                            (char *) mscm, 0);
+}
+
+/****************************************************************************/
+int DecodeQ931(unsigned char *buf, size_t sz, Q931 * q931)
+{
+       unsigned char *p = buf;
+       int len;
+
+       if (!p || sz < 1)
+               return H323_ERROR_BOUND;
+
+       /* Protocol Discriminator */
+       if (*p != 0x08) {
+               PRINT("Unknown Protocol Discriminator\n");
+               return H323_ERROR_RANGE;
+       }
+       p++;
+       sz--;
+
+       /* CallReferenceValue */
+       if (sz < 1)
+               return H323_ERROR_BOUND;
+       len = *p++;
+       sz--;
+       if (sz < len)
+               return H323_ERROR_BOUND;
+       p += len;
+       sz -= len;
+
+       /* Message Type */
+       if (sz < 1)
+               return H323_ERROR_BOUND;
+       q931->MessageType = *p++;
+       PRINT("MessageType = %02X\n", q931->MessageType);
+       if (*p & 0x80) {
+               p++;
+               sz--;
+       }
+
+       /* Decode Information Elements */
+       while (sz > 0) {
+               if (*p == 0x7e) {       /* UserUserIE */
+                       if (sz < 3)
+                               break;
+                       p++;
+                       len = *p++ << 8;
+                       len |= *p++;
+                       sz -= 3;
+                       if (sz < len)
+                               break;
+                       p++;
+                       len--;
+                       return DecodeH323_UserInformation(buf, p, len,
+                                                         &q931->UUIE);
+               }
+               p++;
+               sz--;
+               if (sz < 1)
+                       break;
+               len = *p++;
+               if (sz < len)
+                       break;
+               p += len;
+               sz -= len;
+       }
+
+       PRINT("Q.931 UUIE not found\n");
+
+       return H323_ERROR_BOUND;
+}
diff --git a/net/ipv4/netfilter/ip_conntrack_helper_h323_asn1.h b/net/ipv4/netfilter/ip_conntrack_helper_h323_asn1.h
new file mode 100644 (file)
index 0000000..0bd8280
--- /dev/null
@@ -0,0 +1,98 @@
+/****************************************************************************
+ * ip_conntrack_helper_h323_asn1.h - BER and PER decoding library for H.323
+ *                                  conntrack/NAT module.
+ *
+ * Copyright (c) 2006 by Jing Min Zhao <zhaojingmin@hotmail.com>
+ *
+ * This source code is licensed under General Public License version 2.
+ *
+ *
+ * This library is based on H.225 version 4, H.235 version 2 and H.245
+ * version 7. It is extremely optimized to decode only the absolutely
+ * necessary objects in a signal for Linux kernel NAT module use, so don't
+ * expect it to be a full ASN.1 library.
+ *
+ * Features:
+ *
+ * 1. Small. The total size of code plus data is less than 20 KB (IA32).
+ * 2. Fast. Decoding Netmeeting's Setup signal 1 million times on a PIII 866
+ *    takes only 3.9 seconds.
+ * 3. No memory allocation. It uses a static object. No need to initialize or
+ *    cleanup.
+ * 4. Thread safe.
+ * 5. Support embedded architectures that has no misaligned memory access
+ *    support.
+ *
+ * Limitations:
+ *
+ * 1. At most 30 faststart entries. Actually this is limited by ethernet's MTU.
+ *    If a Setup signal contains more than 30 faststart, the packet size will
+ *    very likely exceed the MTU size, then the TPKT will be fragmented. I
+ *    don't know how to handle this in a Netfilter module. Anybody can help?
+ *    Although I think 30 is enough for most of the cases.
+ * 2. IPv4 addresses only.
+ *
+ ****************************************************************************/
+
+#ifndef _IP_CONNTRACK_HELPER_H323_ASN1_H_
+#define _IP_CONNTRACK_HELPER_H323_ASN1_H_
+
+/*****************************************************************************
+ * H.323 Types
+ ****************************************************************************/
+#include "ip_conntrack_helper_h323_types.h"
+
+typedef struct {
+       enum {
+               Q931_NationalEscape = 0x00,
+               Q931_Alerting = 0x01,
+               Q931_CallProceeding = 0x02,
+               Q931_Connect = 0x07,
+               Q931_ConnectAck = 0x0F,
+               Q931_Progress = 0x03,
+               Q931_Setup = 0x05,
+               Q931_SetupAck = 0x0D,
+               Q931_Resume = 0x26,
+               Q931_ResumeAck = 0x2E,
+               Q931_ResumeReject = 0x22,
+               Q931_Suspend = 0x25,
+               Q931_SuspendAck = 0x2D,
+               Q931_SuspendReject = 0x21,
+               Q931_UserInformation = 0x20,
+               Q931_Disconnect = 0x45,
+               Q931_Release = 0x4D,
+               Q931_ReleaseComplete = 0x5A,
+               Q931_Restart = 0x46,
+               Q931_RestartAck = 0x4E,
+               Q931_Segment = 0x60,
+               Q931_CongestionCtrl = 0x79,
+               Q931_Information = 0x7B,
+               Q931_Notify = 0x6E,
+               Q931_Status = 0x7D,
+               Q931_StatusEnquiry = 0x75,
+               Q931_Facility = 0x62
+       } MessageType;
+       H323_UserInformation UUIE;
+} Q931;
+
+/*****************************************************************************
+ * Decode Functions Return Codes
+ ****************************************************************************/
+
+#define H323_ERROR_NONE 0      /* Decoded successfully */
+#define H323_ERROR_STOP 1      /* Decoding stopped, not really an error */
+#define H323_ERROR_BOUND -1
+#define H323_ERROR_RANGE -2
+
+
+/*****************************************************************************
+ * Decode Functions
+ ****************************************************************************/
+
+int DecodeRasMessage(unsigned char *buf, size_t sz, RasMessage * ras);
+int DecodeQ931(unsigned char *buf, size_t sz, Q931 * q931);
+int DecodeMultimediaSystemControlMessage(unsigned char *buf, size_t sz,
+                                        MultimediaSystemControlMessage *
+                                        mscm);
+
+#endif
diff --git a/net/ipv4/netfilter/ip_conntrack_helper_h323_types.c b/net/ipv4/netfilter/ip_conntrack_helper_h323_types.c
new file mode 100644 (file)
index 0000000..022c47b
--- /dev/null
@@ -0,0 +1,1926 @@
+/* Generated by Jing Min Zhao's ASN.1 parser, Mar 15 2006
+ *
+ * Copyright (c) 2006 Jing Min Zhao <zhaojingmin@users.sourceforge.net>
+ *
+ * This source code is licensed under General Public License version 2.
+ */
+
+static field_t _TransportAddress_ipAddress[] = {       /* SEQUENCE */
+       {FNAME("ip") OCTSTR, FIXD, 4, 0, DECODE,
+        offsetof(TransportAddress_ipAddress, ip), NULL},
+       {FNAME("port") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _TransportAddress_ipSourceRoute_route[] = {     /* SEQUENCE OF */
+       {FNAME("item") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+};
+
+static field_t _TransportAddress_ipSourceRoute_routing[] = {   /* CHOICE */
+       {FNAME("strict") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("loose") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _TransportAddress_ipSourceRoute[] = {   /* SEQUENCE */
+       {FNAME("ip") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+       {FNAME("port") INT, WORD, 0, 0, SKIP, 0, NULL},
+       {FNAME("route") SEQOF, SEMI, 0, 0, SKIP, 0,
+        _TransportAddress_ipSourceRoute_route},
+       {FNAME("routing") CHOICE, 1, 2, 2, SKIP | EXT, 0,
+        _TransportAddress_ipSourceRoute_routing},
+};
+
+static field_t _TransportAddress_ipxAddress[] = {      /* SEQUENCE */
+       {FNAME("node") OCTSTR, FIXD, 6, 0, SKIP, 0, NULL},
+       {FNAME("netnum") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+       {FNAME("port") OCTSTR, FIXD, 2, 0, SKIP, 0, NULL},
+};
+
+static field_t _TransportAddress_ip6Address[] = {      /* SEQUENCE */
+       {FNAME("ip") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+       {FNAME("port") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H221NonStandard[] = {  /* SEQUENCE */
+       {FNAME("t35CountryCode") INT, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("t35Extension") INT, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("manufacturerCode") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _NonStandardIdentifier[] = {    /* CHOICE */
+       {FNAME("object") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("h221NonStandard") SEQ, 0, 3, 3, SKIP | EXT, 0,
+        _H221NonStandard},
+};
+
+static field_t _NonStandardParameter[] = {     /* SEQUENCE */
+       {FNAME("nonStandardIdentifier") CHOICE, 1, 2, 2, SKIP | EXT, 0,
+        _NonStandardIdentifier},
+       {FNAME("data") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _TransportAddress[] = { /* CHOICE */
+       {FNAME("ipAddress") SEQ, 0, 2, 2, DECODE,
+        offsetof(TransportAddress, ipAddress), _TransportAddress_ipAddress},
+       {FNAME("ipSourceRoute") SEQ, 0, 4, 4, SKIP | EXT, 0,
+        _TransportAddress_ipSourceRoute},
+       {FNAME("ipxAddress") SEQ, 0, 3, 3, SKIP, 0,
+        _TransportAddress_ipxAddress},
+       {FNAME("ip6Address") SEQ, 0, 2, 2, SKIP | EXT, 0,
+        _TransportAddress_ip6Address},
+       {FNAME("netBios") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+       {FNAME("nsap") OCTSTR, 5, 1, 0, SKIP, 0, NULL},
+       {FNAME("nonStandardAddress") SEQ, 0, 2, 2, SKIP, 0,
+        _NonStandardParameter},
+};
+
+static field_t _AliasAddress[] = {     /* CHOICE */
+       {FNAME("dialedDigits") NUMDGT, 7, 1, 0, SKIP, 0, NULL},
+       {FNAME("h323-ID") BMPSTR, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("url-ID") IA5STR, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("transportID") CHOICE, 3, 7, 7, SKIP | EXT, 0, NULL},
+       {FNAME("email-ID") IA5STR, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("partyNumber") CHOICE, 3, 5, 5, SKIP | EXT, 0, NULL},
+       {FNAME("mobileUIM") CHOICE, 1, 2, 2, SKIP | EXT, 0, NULL},
+};
+
+static field_t _Setup_UUIE_sourceAddress[] = { /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _VendorIdentifier[] = { /* SEQUENCE */
+       {FNAME("vendor") SEQ, 0, 3, 3, SKIP | EXT, 0, _H221NonStandard},
+       {FNAME("productId") OCTSTR, BYTE, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("versionId") OCTSTR, BYTE, 1, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _GatekeeperInfo[] = {   /* SEQUENCE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+};
+
+static field_t _H310Caps[] = { /* SEQUENCE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H320Caps[] = { /* SEQUENCE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H321Caps[] = { /* SEQUENCE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H322Caps[] = { /* SEQUENCE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H323Caps[] = { /* SEQUENCE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H324Caps[] = { /* SEQUENCE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _VoiceCaps[] = {        /* SEQUENCE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _T120OnlyCaps[] = {     /* SEQUENCE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _SupportedProtocols[] = {       /* CHOICE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP, 0,
+        _NonStandardParameter},
+       {FNAME("h310") SEQ, 1, 1, 3, SKIP | EXT, 0, _H310Caps},
+       {FNAME("h320") SEQ, 1, 1, 3, SKIP | EXT, 0, _H320Caps},
+       {FNAME("h321") SEQ, 1, 1, 3, SKIP | EXT, 0, _H321Caps},
+       {FNAME("h322") SEQ, 1, 1, 3, SKIP | EXT, 0, _H322Caps},
+       {FNAME("h323") SEQ, 1, 1, 3, SKIP | EXT, 0, _H323Caps},
+       {FNAME("h324") SEQ, 1, 1, 3, SKIP | EXT, 0, _H324Caps},
+       {FNAME("voice") SEQ, 1, 1, 3, SKIP | EXT, 0, _VoiceCaps},
+       {FNAME("t120-only") SEQ, 1, 1, 3, SKIP | EXT, 0, _T120OnlyCaps},
+       {FNAME("nonStandardProtocol") SEQ, 2, 3, 3, SKIP | EXT, 0, NULL},
+       {FNAME("t38FaxAnnexbOnly") SEQ, 2, 5, 5, SKIP | EXT, 0, NULL},
+};
+
+static field_t _GatewayInfo_protocol[] = {     /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 4, 9, 11, SKIP | EXT, 0, _SupportedProtocols},
+};
+
+static field_t _GatewayInfo[] = {      /* SEQUENCE */
+       {FNAME("protocol") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _GatewayInfo_protocol},
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+};
+
+static field_t _McuInfo[] = {  /* SEQUENCE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("protocol") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _TerminalInfo[] = {     /* SEQUENCE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+};
+
+static field_t _EndpointType[] = {     /* SEQUENCE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("vendor") SEQ, 2, 3, 3, SKIP | EXT | OPT, 0,
+        _VendorIdentifier},
+       {FNAME("gatekeeper") SEQ, 1, 1, 1, SKIP | EXT | OPT, 0,
+        _GatekeeperInfo},
+       {FNAME("gateway") SEQ, 2, 2, 2, SKIP | EXT | OPT, 0, _GatewayInfo},
+       {FNAME("mcu") SEQ, 1, 1, 2, SKIP | EXT | OPT, 0, _McuInfo},
+       {FNAME("terminal") SEQ, 1, 1, 1, SKIP | EXT | OPT, 0, _TerminalInfo},
+       {FNAME("mc") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("undefinedNode") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("set") BITSTR, FIXD, 32, 0, SKIP | OPT, 0, NULL},
+       {FNAME("supportedTunnelledProtocols") SEQOF, SEMI, 0, 0, SKIP | OPT,
+        0, NULL},
+};
+
+static field_t _Setup_UUIE_destinationAddress[] = {    /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _Setup_UUIE_destExtraCallInfo[] = {     /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _Setup_UUIE_destExtraCRV[] = {  /* SEQUENCE OF */
+       {FNAME("item") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _Setup_UUIE_conferenceGoal[] = {        /* CHOICE */
+       {FNAME("create") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("join") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("invite") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("capability-negotiation") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("callIndependentSupplementaryService") NUL, FIXD, 0, 0, SKIP,
+        0, NULL},
+};
+
+static field_t _Q954Details[] = {      /* SEQUENCE */
+       {FNAME("conferenceCalling") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("threePartyService") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _QseriesOptions[] = {   /* SEQUENCE */
+       {FNAME("q932Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("q951Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("q952Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("q953Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("q955Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("q956Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("q957Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("q954Info") SEQ, 0, 2, 2, SKIP | EXT, 0, _Q954Details},
+};
+
+static field_t _CallType[] = { /* CHOICE */
+       {FNAME("pointToPoint") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("oneToN") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("nToOne") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("nToN") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H245_NonStandardIdentifier_h221NonStandard[] = {       /* SEQUENCE */
+       {FNAME("t35CountryCode") INT, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("t35Extension") INT, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("manufacturerCode") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H245_NonStandardIdentifier[] = {       /* CHOICE */
+       {FNAME("object") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("h221NonStandard") SEQ, 0, 3, 3, SKIP, 0,
+        _H245_NonStandardIdentifier_h221NonStandard},
+};
+
+static field_t _H245_NonStandardParameter[] = {        /* SEQUENCE */
+       {FNAME("nonStandardIdentifier") CHOICE, 1, 2, 2, SKIP, 0,
+        _H245_NonStandardIdentifier},
+       {FNAME("data") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H261VideoCapability[] = {      /* SEQUENCE */
+       {FNAME("qcifMPI") INT, 2, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("cifMPI") INT, 2, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("temporalSpatialTradeOffCapability") BOOL, FIXD, 0, 0, SKIP, 0,
+        NULL},
+       {FNAME("maxBitRate") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("stillImageTransmission") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("videoBadMBsCap") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H262VideoCapability[] = {      /* SEQUENCE */
+       {FNAME("profileAndLevel-SPatML") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("profileAndLevel-MPatLL") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("profileAndLevel-MPatML") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("profileAndLevel-MPatH-14") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("profileAndLevel-MPatHL") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("profileAndLevel-SNRatLL") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("profileAndLevel-SNRatML") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("profileAndLevel-SpatialatH-14") BOOL, FIXD, 0, 0, SKIP, 0,
+        NULL},
+       {FNAME("profileAndLevel-HPatML") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("profileAndLevel-HPatH-14") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("profileAndLevel-HPatHL") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("videoBitRate") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("vbvBufferSize") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("samplesPerLine") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("linesPerFrame") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("framesPerSecond") INT, 4, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("luminanceSampleRate") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("videoBadMBsCap") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H263VideoCapability[] = {      /* SEQUENCE */
+       {FNAME("sqcifMPI") INT, 5, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("qcifMPI") INT, 5, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("cifMPI") INT, 5, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("cif4MPI") INT, 5, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("cif16MPI") INT, 5, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("maxBitRate") INT, CONS, 1, 0, SKIP, 0, NULL},
+       {FNAME("unrestrictedVector") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("arithmeticCoding") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("advancedPrediction") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("pbFrames") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("temporalSpatialTradeOffCapability") BOOL, FIXD, 0, 0, SKIP, 0,
+        NULL},
+       {FNAME("hrd-B") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("bppMaxKb") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("slowSqcifMPI") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("slowQcifMPI") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("slowCifMPI") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("slowCif4MPI") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("slowCif16MPI") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("errorCompensation") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("enhancementLayerInfo") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("h263Options") SEQ, 5, 29, 31, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _IS11172VideoCapability[] = {   /* SEQUENCE */
+       {FNAME("constrainedBitstream") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("videoBitRate") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("vbvBufferSize") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("samplesPerLine") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("linesPerFrame") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("pictureRate") INT, 4, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("luminanceSampleRate") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("videoBadMBsCap") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _VideoCapability[] = {  /* CHOICE */
+       {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+        _H245_NonStandardParameter},
+       {FNAME("h261VideoCapability") SEQ, 2, 5, 6, SKIP | EXT, 0,
+        _H261VideoCapability},
+       {FNAME("h262VideoCapability") SEQ, 6, 17, 18, SKIP | EXT, 0,
+        _H262VideoCapability},
+       {FNAME("h263VideoCapability") SEQ, 7, 13, 21, SKIP | EXT, 0,
+        _H263VideoCapability},
+       {FNAME("is11172VideoCapability") SEQ, 6, 7, 8, SKIP | EXT, 0,
+        _IS11172VideoCapability},
+       {FNAME("genericVideoCapability") SEQ, 5, 6, 6, SKIP | EXT, 0, NULL},
+};
+
+static field_t _AudioCapability_g7231[] = {    /* SEQUENCE */
+       {FNAME("maxAl-sduAudioFrames") INT, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("silenceSuppression") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _IS11172AudioCapability[] = {   /* SEQUENCE */
+       {FNAME("audioLayer1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("audioLayer2") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("audioLayer3") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("audioSampling32k") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("audioSampling44k1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("audioSampling48k") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("singleChannel") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("twoChannels") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("bitRate") INT, WORD, 1, 0, SKIP, 0, NULL},
+};
+
+static field_t _IS13818AudioCapability[] = {   /* SEQUENCE */
+       {FNAME("audioLayer1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("audioLayer2") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("audioLayer3") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("audioSampling16k") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("audioSampling22k05") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("audioSampling24k") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("audioSampling32k") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("audioSampling44k1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("audioSampling48k") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("singleChannel") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("twoChannels") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("threeChannels2-1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("threeChannels3-0") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("fourChannels2-0-2-0") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("fourChannels2-2") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("fourChannels3-1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("fiveChannels3-0-2-0") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("fiveChannels3-2") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("lowFrequencyEnhancement") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("multilingual") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("bitRate") INT, WORD, 1, 0, SKIP, 0, NULL},
+};
+
+static field_t _AudioCapability[] = {  /* CHOICE */
+       {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+        _H245_NonStandardParameter},
+       {FNAME("g711Alaw64k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("g711Alaw56k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("g711Ulaw64k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("g711Ulaw56k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("g722-64k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("g722-56k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("g722-48k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("g7231") SEQ, 0, 2, 2, SKIP, 0, _AudioCapability_g7231},
+       {FNAME("g728") INT, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("g729") INT, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("g729AnnexA") INT, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("is11172AudioCapability") SEQ, 0, 9, 9, SKIP | EXT, 0,
+        _IS11172AudioCapability},
+       {FNAME("is13818AudioCapability") SEQ, 0, 21, 21, SKIP | EXT, 0,
+        _IS13818AudioCapability},
+       {FNAME("g729wAnnexB") INT, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("g729AnnexAwAnnexB") INT, BYTE, 1, 0, SKIP, 0, NULL},
+       {FNAME("g7231AnnexCCapability") SEQ, 1, 3, 3, SKIP | EXT, 0, NULL},
+       {FNAME("gsmFullRate") SEQ, 0, 3, 3, SKIP | EXT, 0, NULL},
+       {FNAME("gsmHalfRate") SEQ, 0, 3, 3, SKIP | EXT, 0, NULL},
+       {FNAME("gsmEnhancedFullRate") SEQ, 0, 3, 3, SKIP | EXT, 0, NULL},
+       {FNAME("genericAudioCapability") SEQ, 5, 6, 6, SKIP | EXT, 0, NULL},
+       {FNAME("g729Extensions") SEQ, 1, 8, 8, SKIP | EXT, 0, NULL},
+};
+
+static field_t _DataProtocolCapability[] = {   /* CHOICE */
+       {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+        _H245_NonStandardParameter},
+       {FNAME("v14buffered") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("v42lapm") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("hdlcFrameTunnelling") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("h310SeparateVCStack") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("h310SingleVCStack") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("transparent") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("segmentationAndReassembly") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("hdlcFrameTunnelingwSAR") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("v120") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("separateLANStack") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("v76wCompression") CHOICE, 2, 3, 3, SKIP | EXT, 0, NULL},
+       {FNAME("tcp") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("udp") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _T84Profile_t84Restricted[] = { /* SEQUENCE */
+       {FNAME("qcif") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("cif") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("ccir601Seq") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("ccir601Prog") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("hdtvSeq") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("hdtvProg") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("g3FacsMH200x100") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("g3FacsMH200x200") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("g4FacsMMR200x100") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("g4FacsMMR200x200") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("jbig200x200Seq") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("jbig200x200Prog") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("jbig300x300Seq") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("jbig300x300Prog") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("digPhotoLow") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("digPhotoMedSeq") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("digPhotoMedProg") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("digPhotoHighSeq") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("digPhotoHighProg") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _T84Profile[] = {       /* CHOICE */
+       {FNAME("t84Unrestricted") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("t84Restricted") SEQ, 0, 19, 19, SKIP | EXT, 0,
+        _T84Profile_t84Restricted},
+};
+
+static field_t _DataApplicationCapability_application_t84[] = {        /* SEQUENCE */
+       {FNAME("t84Protocol") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+        _DataProtocolCapability},
+       {FNAME("t84Profile") CHOICE, 1, 2, 2, SKIP, 0, _T84Profile},
+};
+
+static field_t _DataApplicationCapability_application_nlpid[] = {      /* SEQUENCE */
+       {FNAME("nlpidProtocol") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+        _DataProtocolCapability},
+       {FNAME("nlpidData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _DataApplicationCapability_application[] = {    /* CHOICE */
+       {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+        _H245_NonStandardParameter},
+       {FNAME("t120") CHOICE, 3, 7, 14, DECODE | EXT,
+        offsetof(DataApplicationCapability_application, t120),
+        _DataProtocolCapability},
+       {FNAME("dsm-cc") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+        _DataProtocolCapability},
+       {FNAME("userData") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+        _DataProtocolCapability},
+       {FNAME("t84") SEQ, 0, 2, 2, SKIP, 0,
+        _DataApplicationCapability_application_t84},
+       {FNAME("t434") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+        _DataProtocolCapability},
+       {FNAME("h224") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+        _DataProtocolCapability},
+       {FNAME("nlpid") SEQ, 0, 2, 2, SKIP, 0,
+        _DataApplicationCapability_application_nlpid},
+       {FNAME("dsvdControl") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("h222DataPartitioning") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+        _DataProtocolCapability},
+       {FNAME("t30fax") CHOICE, 3, 7, 14, SKIP | EXT, 0, NULL},
+       {FNAME("t140") CHOICE, 3, 7, 14, SKIP | EXT, 0, NULL},
+       {FNAME("t38fax") SEQ, 0, 2, 2, SKIP, 0, NULL},
+       {FNAME("genericDataCapability") SEQ, 5, 6, 6, SKIP | EXT, 0, NULL},
+};
+
+static field_t _DataApplicationCapability[] = {        /* SEQUENCE */
+       {FNAME("application") CHOICE, 4, 10, 14, DECODE | EXT,
+        offsetof(DataApplicationCapability, application),
+        _DataApplicationCapability_application},
+       {FNAME("maxBitRate") INT, CONS, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _EncryptionMode[] = {   /* CHOICE */
+       {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+        _H245_NonStandardParameter},
+       {FNAME("h233Encryption") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _DataType[] = { /* CHOICE */
+       {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+        _H245_NonStandardParameter},
+       {FNAME("nullData") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("videoData") CHOICE, 3, 5, 6, SKIP | EXT, 0, _VideoCapability},
+       {FNAME("audioData") CHOICE, 4, 14, 22, SKIP | EXT, 0,
+        _AudioCapability},
+       {FNAME("data") SEQ, 0, 2, 2, DECODE | EXT, offsetof(DataType, data),
+        _DataApplicationCapability},
+       {FNAME("encryptionData") CHOICE, 1, 2, 2, SKIP | EXT, 0,
+        _EncryptionMode},
+       {FNAME("h235Control") SEQ, 0, 2, 2, SKIP, 0, NULL},
+       {FNAME("h235Media") SEQ, 0, 2, 2, SKIP | EXT, 0, NULL},
+       {FNAME("multiplexedStream") SEQ, 0, 2, 2, SKIP | EXT, 0, NULL},
+};
+
+static field_t _H222LogicalChannelParameters[] = {     /* SEQUENCE */
+       {FNAME("resourceID") INT, WORD, 0, 0, SKIP, 0, NULL},
+       {FNAME("subChannelID") INT, WORD, 0, 0, SKIP, 0, NULL},
+       {FNAME("pcr-pid") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("programDescriptors") OCTSTR, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("streamDescriptors") OCTSTR, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _H223LogicalChannelParameters_adaptationLayerType_al3[] = {     /* SEQUENCE */
+       {FNAME("controlFieldOctets") INT, 2, 0, 0, SKIP, 0, NULL},
+       {FNAME("sendBufferSize") INT, CONS, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H223LogicalChannelParameters_adaptationLayerType[] = { /* CHOICE */
+       {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+        _H245_NonStandardParameter},
+       {FNAME("al1Framed") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("al1NotFramed") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("al2WithoutSequenceNumbers") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("al2WithSequenceNumbers") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("al3") SEQ, 0, 2, 2, SKIP, 0,
+        _H223LogicalChannelParameters_adaptationLayerType_al3},
+       {FNAME("al1M") SEQ, 0, 7, 8, SKIP | EXT, 0, NULL},
+       {FNAME("al2M") SEQ, 0, 2, 2, SKIP | EXT, 0, NULL},
+       {FNAME("al3M") SEQ, 0, 5, 6, SKIP | EXT, 0, NULL},
+};
+
+static field_t _H223LogicalChannelParameters[] = {     /* SEQUENCE */
+       {FNAME("adaptationLayerType") CHOICE, 3, 6, 9, SKIP | EXT, 0,
+        _H223LogicalChannelParameters_adaptationLayerType},
+       {FNAME("segmentableFlag") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CRCLength[] = {        /* CHOICE */
+       {FNAME("crc8bit") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("crc16bit") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("crc32bit") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _V76HDLCParameters[] = {        /* SEQUENCE */
+       {FNAME("crcLength") CHOICE, 2, 3, 3, SKIP | EXT, 0, _CRCLength},
+       {FNAME("n401") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("loopbackTestProcedure") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _V76LogicalChannelParameters_suspendResume[] = {        /* CHOICE */
+       {FNAME("noSuspendResume") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("suspendResumewAddress") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("suspendResumewoAddress") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _V76LogicalChannelParameters_mode_eRM_recovery[] = {    /* CHOICE */
+       {FNAME("rej") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("sREJ") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("mSREJ") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _V76LogicalChannelParameters_mode_eRM[] = {     /* SEQUENCE */
+       {FNAME("windowSize") INT, 7, 1, 0, SKIP, 0, NULL},
+       {FNAME("recovery") CHOICE, 2, 3, 3, SKIP | EXT, 0,
+        _V76LogicalChannelParameters_mode_eRM_recovery},
+};
+
+static field_t _V76LogicalChannelParameters_mode[] = { /* CHOICE */
+       {FNAME("eRM") SEQ, 0, 2, 2, SKIP | EXT, 0,
+        _V76LogicalChannelParameters_mode_eRM},
+       {FNAME("uNERM") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _V75Parameters[] = {    /* SEQUENCE */
+       {FNAME("audioHeaderPresent") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _V76LogicalChannelParameters[] = {      /* SEQUENCE */
+       {FNAME("hdlcParameters") SEQ, 0, 3, 3, SKIP | EXT, 0,
+        _V76HDLCParameters},
+       {FNAME("suspendResume") CHOICE, 2, 3, 3, SKIP | EXT, 0,
+        _V76LogicalChannelParameters_suspendResume},
+       {FNAME("uIH") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("mode") CHOICE, 1, 2, 2, SKIP | EXT, 0,
+        _V76LogicalChannelParameters_mode},
+       {FNAME("v75Parameters") SEQ, 0, 1, 1, SKIP | EXT, 0, _V75Parameters},
+};
+
+static field_t _H2250LogicalChannelParameters_nonStandard[] = {        /* SEQUENCE OF */
+       {FNAME("item") SEQ, 0, 2, 2, SKIP, 0, _H245_NonStandardParameter},
+};
+
+static field_t _UnicastAddress_iPAddress[] = { /* SEQUENCE */
+       {FNAME("network") OCTSTR, FIXD, 4, 0, DECODE,
+        offsetof(UnicastAddress_iPAddress, network), NULL},
+       {FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _UnicastAddress_iPXAddress[] = {        /* SEQUENCE */
+       {FNAME("node") OCTSTR, FIXD, 6, 0, SKIP, 0, NULL},
+       {FNAME("netnum") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+       {FNAME("tsapIdentifier") OCTSTR, FIXD, 2, 0, SKIP, 0, NULL},
+};
+
+static field_t _UnicastAddress_iP6Address[] = {        /* SEQUENCE */
+       {FNAME("network") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+       {FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _UnicastAddress_iPSourceRouteAddress_routing[] = {      /* CHOICE */
+       {FNAME("strict") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("loose") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _UnicastAddress_iPSourceRouteAddress_route[] = {        /* SEQUENCE OF */
+       {FNAME("item") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+};
+
+static field_t _UnicastAddress_iPSourceRouteAddress[] = {      /* SEQUENCE */
+       {FNAME("routing") CHOICE, 1, 2, 2, SKIP, 0,
+        _UnicastAddress_iPSourceRouteAddress_routing},
+       {FNAME("network") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+       {FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
+       {FNAME("route") SEQOF, SEMI, 0, 0, SKIP, 0,
+        _UnicastAddress_iPSourceRouteAddress_route},
+};
+
+static field_t _UnicastAddress[] = {   /* CHOICE */
+       {FNAME("iPAddress") SEQ, 0, 2, 2, DECODE | EXT,
+        offsetof(UnicastAddress, iPAddress), _UnicastAddress_iPAddress},
+       {FNAME("iPXAddress") SEQ, 0, 3, 3, SKIP | EXT, 0,
+        _UnicastAddress_iPXAddress},
+       {FNAME("iP6Address") SEQ, 0, 2, 2, SKIP | EXT, 0,
+        _UnicastAddress_iP6Address},
+       {FNAME("netBios") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+       {FNAME("iPSourceRouteAddress") SEQ, 0, 4, 4, SKIP | EXT, 0,
+        _UnicastAddress_iPSourceRouteAddress},
+       {FNAME("nsap") OCTSTR, 5, 1, 0, SKIP, 0, NULL},
+       {FNAME("nonStandardAddress") SEQ, 0, 2, 2, SKIP, 0, NULL},
+};
+
+static field_t _MulticastAddress_iPAddress[] = {       /* SEQUENCE */
+       {FNAME("network") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+       {FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _MulticastAddress_iP6Address[] = {      /* SEQUENCE */
+       {FNAME("network") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+       {FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _MulticastAddress[] = { /* CHOICE */
+       {FNAME("iPAddress") SEQ, 0, 2, 2, SKIP | EXT, 0,
+        _MulticastAddress_iPAddress},
+       {FNAME("iP6Address") SEQ, 0, 2, 2, SKIP | EXT, 0,
+        _MulticastAddress_iP6Address},
+       {FNAME("nsap") OCTSTR, 5, 1, 0, SKIP, 0, NULL},
+       {FNAME("nonStandardAddress") SEQ, 0, 2, 2, SKIP, 0, NULL},
+};
+
+static field_t _H245_TransportAddress[] = {    /* CHOICE */
+       {FNAME("unicastAddress") CHOICE, 3, 5, 7, DECODE | EXT,
+        offsetof(H245_TransportAddress, unicastAddress), _UnicastAddress},
+       {FNAME("multicastAddress") CHOICE, 1, 2, 4, SKIP | EXT, 0,
+        _MulticastAddress},
+};
+
+static field_t _H2250LogicalChannelParameters[] = {    /* SEQUENCE */
+       {FNAME("nonStandard") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _H2250LogicalChannelParameters_nonStandard},
+       {FNAME("sessionID") INT, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("associatedSessionID") INT, 8, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("mediaChannel") CHOICE, 1, 2, 2, DECODE | EXT | OPT,
+        offsetof(H2250LogicalChannelParameters, mediaChannel),
+        _H245_TransportAddress},
+       {FNAME("mediaGuaranteedDelivery") BOOL, FIXD, 0, 0, SKIP | OPT, 0,
+        NULL},
+       {FNAME("mediaControlChannel") CHOICE, 1, 2, 2, DECODE | EXT | OPT,
+        offsetof(H2250LogicalChannelParameters, mediaControlChannel),
+        _H245_TransportAddress},
+       {FNAME("mediaControlGuaranteedDelivery") BOOL, FIXD, 0, 0, STOP | OPT,
+        0, NULL},
+       {FNAME("silenceSuppression") BOOL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("destination") SEQ, 0, 2, 2, STOP | EXT | OPT, 0, NULL},
+       {FNAME("dynamicRTPPayloadType") INT, 5, 96, 0, STOP | OPT, 0, NULL},
+       {FNAME("mediaPacketization") CHOICE, 0, 1, 2, STOP | EXT | OPT, 0,
+        NULL},
+       {FNAME("transportCapability") SEQ, 3, 3, 3, STOP | EXT | OPT, 0,
+        NULL},
+       {FNAME("redundancyEncoding") SEQ, 1, 2, 2, STOP | EXT | OPT, 0, NULL},
+       {FNAME("source") SEQ, 0, 2, 2, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters[] = {   /* CHOICE */
+       {FNAME("h222LogicalChannelParameters") SEQ, 3, 5, 5, SKIP | EXT, 0,
+        _H222LogicalChannelParameters},
+       {FNAME("h223LogicalChannelParameters") SEQ, 0, 2, 2, SKIP | EXT, 0,
+        _H223LogicalChannelParameters},
+       {FNAME("v76LogicalChannelParameters") SEQ, 0, 5, 5, SKIP | EXT, 0,
+        _V76LogicalChannelParameters},
+       {FNAME("h2250LogicalChannelParameters") SEQ, 10, 11, 14, DECODE | EXT,
+        offsetof
+        (OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters,
+         h2250LogicalChannelParameters), _H2250LogicalChannelParameters},
+       {FNAME("none") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _OpenLogicalChannel_forwardLogicalChannelParameters[] = {       /* SEQUENCE */
+       {FNAME("portNumber") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("dataType") CHOICE, 3, 6, 9, DECODE | EXT,
+        offsetof(OpenLogicalChannel_forwardLogicalChannelParameters,
+                 dataType), _DataType},
+       {FNAME("multiplexParameters") CHOICE, 2, 3, 5, DECODE | EXT,
+        offsetof(OpenLogicalChannel_forwardLogicalChannelParameters,
+                 multiplexParameters),
+        _OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters},
+       {FNAME("forwardLogicalChannelDependency") INT, WORD, 1, 0, SKIP | OPT,
+        0, NULL},
+       {FNAME("replacementFor") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters[] = {   /* CHOICE */
+       {FNAME("h223LogicalChannelParameters") SEQ, 0, 2, 2, SKIP | EXT, 0,
+        _H223LogicalChannelParameters},
+       {FNAME("v76LogicalChannelParameters") SEQ, 0, 5, 5, SKIP | EXT, 0,
+        _V76LogicalChannelParameters},
+       {FNAME("h2250LogicalChannelParameters") SEQ, 10, 11, 14, DECODE | EXT,
+        offsetof
+        (OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters,
+         h2250LogicalChannelParameters), _H2250LogicalChannelParameters},
+};
+
+static field_t _OpenLogicalChannel_reverseLogicalChannelParameters[] = {       /* SEQUENCE */
+       {FNAME("dataType") CHOICE, 3, 6, 9, SKIP | EXT, 0, _DataType},
+       {FNAME("multiplexParameters") CHOICE, 1, 2, 3, DECODE | EXT | OPT,
+        offsetof(OpenLogicalChannel_reverseLogicalChannelParameters,
+                 multiplexParameters),
+        _OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters},
+       {FNAME("reverseLogicalChannelDependency") INT, WORD, 1, 0, SKIP | OPT,
+        0, NULL},
+       {FNAME("replacementFor") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _NetworkAccessParameters_distribution[] = {     /* CHOICE */
+       {FNAME("unicast") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("multicast") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _Q2931Address_address[] = {     /* CHOICE */
+       {FNAME("internationalNumber") NUMSTR, 4, 1, 0, SKIP, 0, NULL},
+       {FNAME("nsapAddress") OCTSTR, 5, 1, 0, SKIP, 0, NULL},
+};
+
+static field_t _Q2931Address[] = {     /* SEQUENCE */
+       {FNAME("address") CHOICE, 1, 2, 2, SKIP | EXT, 0,
+        _Q2931Address_address},
+       {FNAME("subaddress") OCTSTR, 5, 1, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _NetworkAccessParameters_networkAddress[] = {   /* CHOICE */
+       {FNAME("q2931Address") SEQ, 1, 2, 2, SKIP | EXT, 0, _Q2931Address},
+       {FNAME("e164Address") NUMDGT, 7, 1, 0, SKIP, 0, NULL},
+       {FNAME("localAreaAddress") CHOICE, 1, 2, 2, DECODE | EXT,
+        offsetof(NetworkAccessParameters_networkAddress, localAreaAddress),
+        _H245_TransportAddress},
+};
+
+static field_t _NetworkAccessParameters[] = {  /* SEQUENCE */
+       {FNAME("distribution") CHOICE, 1, 2, 2, SKIP | EXT | OPT, 0,
+        _NetworkAccessParameters_distribution},
+       {FNAME("networkAddress") CHOICE, 2, 3, 3, DECODE | EXT,
+        offsetof(NetworkAccessParameters, networkAddress),
+        _NetworkAccessParameters_networkAddress},
+       {FNAME("associateConference") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("externalReference") OCTSTR, 8, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("t120SetupProcedure") CHOICE, 2, 3, 3, SKIP | EXT | OPT, 0,
+        NULL},
+};
+
+static field_t _OpenLogicalChannel[] = {       /* SEQUENCE */
+       {FNAME("forwardLogicalChannelNumber") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("forwardLogicalChannelParameters") SEQ, 1, 3, 5, DECODE | EXT,
+        offsetof(OpenLogicalChannel, forwardLogicalChannelParameters),
+        _OpenLogicalChannel_forwardLogicalChannelParameters},
+       {FNAME("reverseLogicalChannelParameters") SEQ, 1, 2, 4,
+        DECODE | EXT | OPT, offsetof(OpenLogicalChannel,
+                                     reverseLogicalChannelParameters),
+        _OpenLogicalChannel_reverseLogicalChannelParameters},
+       {FNAME("separateStack") SEQ, 2, 4, 5, DECODE | EXT | OPT,
+        offsetof(OpenLogicalChannel, separateStack),
+        _NetworkAccessParameters},
+       {FNAME("encryptionSync") SEQ, 2, 4, 4, STOP | EXT | OPT, 0, NULL},
+};
+
+static field_t _Setup_UUIE_fastStart[] = {     /* SEQUENCE OF */
+       {FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+        sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+       ,
+};
+
+static field_t _Setup_UUIE[] = {       /* SEQUENCE */
+       {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+        offsetof(Setup_UUIE, h245Address), _TransportAddress},
+       {FNAME("sourceAddress") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _Setup_UUIE_sourceAddress},
+       {FNAME("sourceInfo") SEQ, 6, 8, 10, SKIP | EXT, 0, _EndpointType},
+       {FNAME("destinationAddress") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _Setup_UUIE_destinationAddress},
+       {FNAME("destCallSignalAddress") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+        offsetof(Setup_UUIE, destCallSignalAddress), _TransportAddress},
+       {FNAME("destExtraCallInfo") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _Setup_UUIE_destExtraCallInfo},
+       {FNAME("destExtraCRV") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _Setup_UUIE_destExtraCRV},
+       {FNAME("activeMC") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("conferenceID") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+       {FNAME("conferenceGoal") CHOICE, 2, 3, 5, SKIP | EXT, 0,
+        _Setup_UUIE_conferenceGoal},
+       {FNAME("callServices") SEQ, 0, 8, 8, SKIP | EXT | OPT, 0,
+        _QseriesOptions},
+       {FNAME("callType") CHOICE, 2, 4, 4, SKIP | EXT, 0, _CallType},
+       {FNAME("sourceCallSignalAddress") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+        offsetof(Setup_UUIE, sourceCallSignalAddress), _TransportAddress},
+       {FNAME("remoteExtensionAddress") CHOICE, 1, 2, 7, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+       {FNAME("h245SecurityCapability") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+        offsetof(Setup_UUIE, fastStart), _Setup_UUIE_fastStart},
+       {FNAME("mediaWaitForConnect") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("canOverlapSend") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+       {FNAME("multipleCalls") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("maintainConnection") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("connectionParameters") SEQ, 0, 3, 3, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("language") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("presentationIndicator") CHOICE, 2, 3, 3, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("screeningIndicator") ENUM, 2, 0, 0, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("serviceControl") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("symmetricOperationRequired") NUL, FIXD, 0, 0, SKIP | OPT, 0,
+        NULL},
+       {FNAME("capacity") SEQ, 2, 2, 2, SKIP | EXT | OPT, 0, NULL},
+       {FNAME("circuitInfo") SEQ, 3, 3, 3, SKIP | EXT | OPT, 0, NULL},
+       {FNAME("desiredProtocols") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("neededFeatures") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("desiredFeatures") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("supportedFeatures") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("parallelH245Control") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("additionalSourceAddresses") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        NULL},
+};
+
+static field_t _CallProceeding_UUIE_fastStart[] = {    /* SEQUENCE OF */
+       {FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+        sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+       ,
+};
+
+static field_t _CallProceeding_UUIE[] = {      /* SEQUENCE */
+       {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("destinationInfo") SEQ, 6, 8, 10, SKIP | EXT, 0,
+        _EndpointType},
+       {FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+        offsetof(CallProceeding_UUIE, h245Address), _TransportAddress},
+       {FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+       {FNAME("h245SecurityMode") CHOICE, 2, 4, 4, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+        offsetof(CallProceeding_UUIE, fastStart),
+        _CallProceeding_UUIE_fastStart},
+       {FNAME("multipleCalls") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("maintainConnection") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("fastConnectRefused") NUL, FIXD, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _Connect_UUIE_fastStart[] = {   /* SEQUENCE OF */
+       {FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+        sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+       ,
+};
+
+static field_t _Connect_UUIE[] = {     /* SEQUENCE */
+       {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+        offsetof(Connect_UUIE, h245Address), _TransportAddress},
+       {FNAME("destinationInfo") SEQ, 6, 8, 10, SKIP | EXT, 0,
+        _EndpointType},
+       {FNAME("conferenceID") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+       {FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+       {FNAME("h245SecurityMode") CHOICE, 2, 4, 4, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+        offsetof(Connect_UUIE, fastStart), _Connect_UUIE_fastStart},
+       {FNAME("multipleCalls") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("maintainConnection") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("language") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("connectedAddress") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("presentationIndicator") CHOICE, 2, 3, 3, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("screeningIndicator") ENUM, 2, 0, 0, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("fastConnectRefused") NUL, FIXD, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("serviceControl") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("capacity") SEQ, 2, 2, 2, SKIP | EXT | OPT, 0, NULL},
+       {FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _Alerting_UUIE_fastStart[] = {  /* SEQUENCE OF */
+       {FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+        sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+       ,
+};
+
+static field_t _Alerting_UUIE[] = {    /* SEQUENCE */
+       {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("destinationInfo") SEQ, 6, 8, 10, SKIP | EXT, 0,
+        _EndpointType},
+       {FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+        offsetof(Alerting_UUIE, h245Address), _TransportAddress},
+       {FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+       {FNAME("h245SecurityMode") CHOICE, 2, 4, 4, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+        offsetof(Alerting_UUIE, fastStart), _Alerting_UUIE_fastStart},
+       {FNAME("multipleCalls") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("maintainConnection") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("alertingAddress") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("presentationIndicator") CHOICE, 2, 3, 3, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("screeningIndicator") ENUM, 2, 0, 0, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("fastConnectRefused") NUL, FIXD, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("serviceControl") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("capacity") SEQ, 2, 2, 2, SKIP | EXT | OPT, 0, NULL},
+       {FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _Information_UUIE_fastStart[] = {       /* SEQUENCE OF */
+       {FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+        sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+       ,
+};
+
+static field_t _Information_UUIE[] = { /* SEQUENCE */
+       {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+        offsetof(Information_UUIE, fastStart), _Information_UUIE_fastStart},
+       {FNAME("fastConnectRefused") NUL, FIXD, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("circuitInfo") SEQ, 3, 3, 3, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _ReleaseCompleteReason[] = {    /* CHOICE */
+       {FNAME("noBandwidth") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("gatekeeperResources") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("unreachableDestination") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("destinationRejection") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("invalidRevision") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("noPermission") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("unreachableGatekeeper") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("gatewayResources") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("badFormatAddress") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("adaptiveBusy") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("inConf") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("undefinedReason") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("facilityCallDeflection") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("securityDenied") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("calledPartyNotRegistered") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("callerNotRegistered") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("newConnectionNeeded") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("nonStandardReason") SEQ, 0, 2, 2, SKIP, 0, NULL},
+       {FNAME("replaceWithConferenceInvite") OCTSTR, FIXD, 16, 0, SKIP, 0,
+        NULL},
+       {FNAME("genericDataReason") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("neededFeatureNotSupported") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("tunnelledSignallingRejected") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _ReleaseComplete_UUIE[] = {     /* SEQUENCE */
+       {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("reason") CHOICE, 4, 12, 22, SKIP | EXT | OPT, 0,
+        _ReleaseCompleteReason},
+       {FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("busyAddress") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("presentationIndicator") CHOICE, 2, 3, 3, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("screeningIndicator") ENUM, 2, 0, 0, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("capacity") SEQ, 2, 2, 2, SKIP | EXT | OPT, 0, NULL},
+       {FNAME("serviceControl") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _Facility_UUIE_alternativeAliasAddress[] = {    /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _FacilityReason[] = {   /* CHOICE */
+       {FNAME("routeCallToGatekeeper") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("callForwarded") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("routeCallToMC") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("undefinedReason") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("conferenceListChoice") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("startH245") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("noH245") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("newTokens") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("featureSetUpdate") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("forwardedElements") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("transportedInformation") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _Facility_UUIE_fastStart[] = {  /* SEQUENCE OF */
+       {FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+        sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+       ,
+};
+
+static field_t _Facility_UUIE[] = {    /* SEQUENCE */
+       {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("alternativeAddress") CHOICE, 3, 7, 7, SKIP | EXT | OPT, 0,
+        _TransportAddress},
+       {FNAME("alternativeAliasAddress") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _Facility_UUIE_alternativeAliasAddress},
+       {FNAME("conferenceID") OCTSTR, FIXD, 16, 0, SKIP | OPT, 0, NULL},
+       {FNAME("reason") CHOICE, 2, 4, 11, DECODE | EXT,
+        offsetof(Facility_UUIE, reason), _FacilityReason},
+       {FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+       {FNAME("destExtraCallInfo") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("remoteExtensionAddress") CHOICE, 1, 2, 7, SKIP | EXT | OPT, 0,
+        NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("conferences") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+        offsetof(Facility_UUIE, h245Address), _TransportAddress},
+       {FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+        offsetof(Facility_UUIE, fastStart), _Facility_UUIE_fastStart},
+       {FNAME("multipleCalls") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("maintainConnection") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("fastConnectRefused") NUL, FIXD, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("serviceControl") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("circuitInfo") SEQ, 3, 3, 3, SKIP | EXT | OPT, 0, NULL},
+       {FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
+       {FNAME("destinationInfo") SEQ, 6, 8, 10, SKIP | EXT | OPT, 0, NULL},
+       {FNAME("h245SecurityMode") CHOICE, 2, 4, 4, SKIP | EXT | OPT, 0,
+        NULL},
+};
+
+static field_t _CallIdentifier[] = {   /* SEQUENCE */
+       {FNAME("guid") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+};
+
+static field_t _SecurityServiceMode[] = {      /* CHOICE */
+       {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0, _NonStandardParameter},
+       {FNAME("none") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("default") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _SecurityCapabilities[] = {     /* SEQUENCE */
+       {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("encryption") CHOICE, 2, 3, 3, SKIP | EXT, 0,
+        _SecurityServiceMode},
+       {FNAME("authenticaton") CHOICE, 2, 3, 3, SKIP | EXT, 0,
+        _SecurityServiceMode},
+       {FNAME("integrity") CHOICE, 2, 3, 3, SKIP | EXT, 0,
+        _SecurityServiceMode},
+};
+
+static field_t _H245Security[] = {     /* CHOICE */
+       {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0, _NonStandardParameter},
+       {FNAME("noSecurity") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("tls") SEQ, 1, 4, 4, SKIP | EXT, 0, _SecurityCapabilities},
+       {FNAME("ipsec") SEQ, 1, 4, 4, SKIP | EXT, 0, _SecurityCapabilities},
+};
+
+static field_t _DHset[] = {    /* SEQUENCE */
+       {FNAME("halfkey") BITSTR, WORD, 0, 0, SKIP, 0, NULL},
+       {FNAME("modSize") BITSTR, WORD, 0, 0, SKIP, 0, NULL},
+       {FNAME("generator") BITSTR, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _TypedCertificate[] = { /* SEQUENCE */
+       {FNAME("type") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("certificate") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H235_NonStandardParameter[] = {        /* SEQUENCE */
+       {FNAME("nonStandardIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("data") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _ClearToken[] = {       /* SEQUENCE */
+       {FNAME("tokenOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("timeStamp") INT, CONS, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("password") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("dhkey") SEQ, 0, 3, 3, SKIP | EXT | OPT, 0, _DHset},
+       {FNAME("challenge") OCTSTR, 7, 8, 0, SKIP | OPT, 0, NULL},
+       {FNAME("random") INT, UNCO, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("certificate") SEQ, 0, 2, 2, SKIP | EXT | OPT, 0,
+        _TypedCertificate},
+       {FNAME("generalID") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _H235_NonStandardParameter},
+       {FNAME("eckasdhkey") CHOICE, 1, 2, 2, SKIP | EXT | OPT, 0, NULL},
+       {FNAME("sendersID") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _Progress_UUIE_tokens[] = {     /* SEQUENCE OF */
+       {FNAME("item") SEQ, 8, 9, 11, SKIP | EXT, 0, _ClearToken},
+};
+
+static field_t _Params[] = {   /* SEQUENCE */
+       {FNAME("ranInt") INT, UNCO, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("iv8") OCTSTR, FIXD, 8, 0, SKIP | OPT, 0, NULL},
+       {FNAME("iv16") OCTSTR, FIXD, 16, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoEPPwdHash_token[] = {    /* SEQUENCE */
+       {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+       {FNAME("hash") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoEPPwdHash[] = {  /* SEQUENCE */
+       {FNAME("alias") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+       {FNAME("timeStamp") INT, CONS, 1, 0, SKIP, 0, NULL},
+       {FNAME("token") SEQ, 0, 3, 3, SKIP, 0,
+        _CryptoH323Token_cryptoEPPwdHash_token},
+};
+
+static field_t _CryptoH323Token_cryptoGKPwdHash_token[] = {    /* SEQUENCE */
+       {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+       {FNAME("hash") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoGKPwdHash[] = {  /* SEQUENCE */
+       {FNAME("gatekeeperId") BMPSTR, 7, 1, 0, SKIP, 0, NULL},
+       {FNAME("timeStamp") INT, CONS, 1, 0, SKIP, 0, NULL},
+       {FNAME("token") SEQ, 0, 3, 3, SKIP, 0,
+        _CryptoH323Token_cryptoGKPwdHash_token},
+};
+
+static field_t _CryptoH323Token_cryptoEPPwdEncr[] = {  /* SEQUENCE */
+       {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+       {FNAME("encryptedData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoGKPwdEncr[] = {  /* SEQUENCE */
+       {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+       {FNAME("encryptedData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoEPCert[] = {     /* SEQUENCE */
+       {FNAME("toBeSigned") SEQ, 8, 9, 11, SKIP | OPEN | EXT, 0, NULL},
+       {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+       {FNAME("signature") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoGKCert[] = {     /* SEQUENCE */
+       {FNAME("toBeSigned") SEQ, 8, 9, 11, SKIP | OPEN | EXT, 0, NULL},
+       {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+       {FNAME("signature") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoFastStart[] = {  /* SEQUENCE */
+       {FNAME("toBeSigned") SEQ, 8, 9, 11, SKIP | OPEN | EXT, 0, NULL},
+       {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+       {FNAME("signature") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoToken_cryptoEncryptedToken_token[] = {   /* SEQUENCE */
+       {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+       {FNAME("encryptedData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoToken_cryptoEncryptedToken[] = { /* SEQUENCE */
+       {FNAME("tokenOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("token") SEQ, 0, 3, 3, SKIP, 0,
+        _CryptoToken_cryptoEncryptedToken_token},
+};
+
+static field_t _CryptoToken_cryptoSignedToken_token[] = {      /* SEQUENCE */
+       {FNAME("toBeSigned") SEQ, 8, 9, 11, SKIP | OPEN | EXT, 0, NULL},
+       {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+       {FNAME("signature") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoToken_cryptoSignedToken[] = {    /* SEQUENCE */
+       {FNAME("tokenOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("token") SEQ, 0, 4, 4, SKIP, 0,
+        _CryptoToken_cryptoSignedToken_token},
+};
+
+static field_t _CryptoToken_cryptoHashedToken_token[] = {      /* SEQUENCE */
+       {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+       {FNAME("hash") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoToken_cryptoHashedToken[] = {    /* SEQUENCE */
+       {FNAME("tokenOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("hashedVals") SEQ, 8, 9, 11, SKIP | EXT, 0, _ClearToken},
+       {FNAME("token") SEQ, 0, 3, 3, SKIP, 0,
+        _CryptoToken_cryptoHashedToken_token},
+};
+
+static field_t _CryptoToken_cryptoPwdEncr[] = {        /* SEQUENCE */
+       {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+       {FNAME("encryptedData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoToken[] = {      /* CHOICE */
+       {FNAME("cryptoEncryptedToken") SEQ, 0, 2, 2, SKIP, 0,
+        _CryptoToken_cryptoEncryptedToken},
+       {FNAME("cryptoSignedToken") SEQ, 0, 2, 2, SKIP, 0,
+        _CryptoToken_cryptoSignedToken},
+       {FNAME("cryptoHashedToken") SEQ, 0, 3, 3, SKIP, 0,
+        _CryptoToken_cryptoHashedToken},
+       {FNAME("cryptoPwdEncr") SEQ, 0, 3, 3, SKIP, 0,
+        _CryptoToken_cryptoPwdEncr},
+};
+
+static field_t _CryptoH323Token[] = {  /* CHOICE */
+       {FNAME("cryptoEPPwdHash") SEQ, 0, 3, 3, SKIP, 0,
+        _CryptoH323Token_cryptoEPPwdHash},
+       {FNAME("cryptoGKPwdHash") SEQ, 0, 3, 3, SKIP, 0,
+        _CryptoH323Token_cryptoGKPwdHash},
+       {FNAME("cryptoEPPwdEncr") SEQ, 0, 3, 3, SKIP, 0,
+        _CryptoH323Token_cryptoEPPwdEncr},
+       {FNAME("cryptoGKPwdEncr") SEQ, 0, 3, 3, SKIP, 0,
+        _CryptoH323Token_cryptoGKPwdEncr},
+       {FNAME("cryptoEPCert") SEQ, 0, 4, 4, SKIP, 0,
+        _CryptoH323Token_cryptoEPCert},
+       {FNAME("cryptoGKCert") SEQ, 0, 4, 4, SKIP, 0,
+        _CryptoH323Token_cryptoGKCert},
+       {FNAME("cryptoFastStart") SEQ, 0, 4, 4, SKIP, 0,
+        _CryptoH323Token_cryptoFastStart},
+       {FNAME("nestedcryptoToken") CHOICE, 2, 4, 4, SKIP | EXT, 0,
+        _CryptoToken},
+};
+
+static field_t _Progress_UUIE_cryptoTokens[] = {       /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 3, 8, 8, SKIP | EXT, 0, _CryptoH323Token},
+};
+
+static field_t _Progress_UUIE_fastStart[] = {  /* SEQUENCE OF */
+       {FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+        sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+       ,
+};
+
+static field_t _Progress_UUIE[] = {    /* SEQUENCE */
+       {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("destinationInfo") SEQ, 6, 8, 10, SKIP | EXT, 0,
+        _EndpointType},
+       {FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+        offsetof(Progress_UUIE, h245Address), _TransportAddress},
+       {FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0,
+        _CallIdentifier},
+       {FNAME("h245SecurityMode") CHOICE, 2, 4, 4, SKIP | EXT | OPT, 0,
+        _H245Security},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _Progress_UUIE_tokens},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _Progress_UUIE_cryptoTokens},
+       {FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+        offsetof(Progress_UUIE, fastStart), _Progress_UUIE_fastStart},
+       {FNAME("multipleCalls") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("maintainConnection") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("fastConnectRefused") NUL, FIXD, 0, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _H323_UU_PDU_h323_message_body[] = {    /* CHOICE */
+       {FNAME("setup") SEQ, 7, 13, 39, DECODE | EXT,
+        offsetof(H323_UU_PDU_h323_message_body, setup), _Setup_UUIE},
+       {FNAME("callProceeding") SEQ, 1, 3, 12, DECODE | EXT,
+        offsetof(H323_UU_PDU_h323_message_body, callProceeding),
+        _CallProceeding_UUIE},
+       {FNAME("connect") SEQ, 1, 4, 19, DECODE | EXT,
+        offsetof(H323_UU_PDU_h323_message_body, connect), _Connect_UUIE},
+       {FNAME("alerting") SEQ, 1, 3, 17, DECODE | EXT,
+        offsetof(H323_UU_PDU_h323_message_body, alerting), _Alerting_UUIE},
+       {FNAME("information") SEQ, 0, 1, 7, DECODE | EXT,
+        offsetof(H323_UU_PDU_h323_message_body, information),
+        _Information_UUIE},
+       {FNAME("releaseComplete") SEQ, 1, 2, 11, SKIP | EXT, 0,
+        _ReleaseComplete_UUIE},
+       {FNAME("facility") SEQ, 3, 5, 21, DECODE | EXT,
+        offsetof(H323_UU_PDU_h323_message_body, facility), _Facility_UUIE},
+       {FNAME("progress") SEQ, 5, 8, 11, DECODE | EXT,
+        offsetof(H323_UU_PDU_h323_message_body, progress), _Progress_UUIE},
+       {FNAME("empty") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("status") SEQ, 2, 4, 4, SKIP | EXT, 0, NULL},
+       {FNAME("statusInquiry") SEQ, 2, 4, 4, SKIP | EXT, 0, NULL},
+       {FNAME("setupAcknowledge") SEQ, 2, 4, 4, SKIP | EXT, 0, NULL},
+       {FNAME("notify") SEQ, 2, 4, 4, SKIP | EXT, 0, NULL},
+};
+
+static field_t _RequestMessage[] = {   /* CHOICE */
+       {FNAME("nonStandard") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+       {FNAME("masterSlaveDetermination") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+       {FNAME("terminalCapabilitySet") SEQ, 3, 5, 5, STOP | EXT, 0, NULL},
+       {FNAME("openLogicalChannel") SEQ, 1, 3, 5, DECODE | EXT,
+        offsetof(RequestMessage, openLogicalChannel), _OpenLogicalChannel},
+       {FNAME("closeLogicalChannel") SEQ, 0, 2, 3, STOP | EXT, 0, NULL},
+       {FNAME("requestChannelClose") SEQ, 0, 1, 3, STOP | EXT, 0, NULL},
+       {FNAME("multiplexEntrySend") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+       {FNAME("requestMultiplexEntry") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+       {FNAME("requestMode") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+       {FNAME("roundTripDelayRequest") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+       {FNAME("maintenanceLoopRequest") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+       {FNAME("communicationModeRequest") SEQ, 0, 0, 0, STOP | EXT, 0, NULL},
+       {FNAME("conferenceRequest") CHOICE, 3, 8, 16, STOP | EXT, 0, NULL},
+       {FNAME("multilinkRequest") CHOICE, 3, 5, 5, STOP | EXT, 0, NULL},
+       {FNAME("logicalChannelRateRequest") SEQ, 0, 3, 3, STOP | EXT, 0,
+        NULL},
+};
+
+static field_t _OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters[] = {        /* CHOICE */
+       {FNAME("h222LogicalChannelParameters") SEQ, 3, 5, 5, SKIP | EXT, 0,
+        _H222LogicalChannelParameters},
+       {FNAME("h2250LogicalChannelParameters") SEQ, 10, 11, 14, DECODE | EXT,
+        offsetof
+        (OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters,
+         h2250LogicalChannelParameters), _H2250LogicalChannelParameters},
+};
+
+static field_t _OpenLogicalChannelAck_reverseLogicalChannelParameters[] = {    /* SEQUENCE */
+       {FNAME("reverseLogicalChannelNumber") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("portNumber") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("multiplexParameters") CHOICE, 0, 1, 2, DECODE | EXT | OPT,
+        offsetof(OpenLogicalChannelAck_reverseLogicalChannelParameters,
+                 multiplexParameters),
+        _OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters},
+       {FNAME("replacementFor") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _H2250LogicalChannelAckParameters_nonStandard[] = {     /* SEQUENCE OF */
+       {FNAME("item") SEQ, 0, 2, 2, SKIP, 0, _H245_NonStandardParameter},
+};
+
+static field_t _H2250LogicalChannelAckParameters[] = { /* SEQUENCE */
+       {FNAME("nonStandard") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _H2250LogicalChannelAckParameters_nonStandard},
+       {FNAME("sessionID") INT, 8, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("mediaChannel") CHOICE, 1, 2, 2, DECODE | EXT | OPT,
+        offsetof(H2250LogicalChannelAckParameters, mediaChannel),
+        _H245_TransportAddress},
+       {FNAME("mediaControlChannel") CHOICE, 1, 2, 2, DECODE | EXT | OPT,
+        offsetof(H2250LogicalChannelAckParameters, mediaControlChannel),
+        _H245_TransportAddress},
+       {FNAME("dynamicRTPPayloadType") INT, 5, 96, 0, SKIP | OPT, 0, NULL},
+       {FNAME("flowControlToZero") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("portNumber") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _OpenLogicalChannelAck_forwardMultiplexAckParameters[] = {      /* CHOICE */
+       {FNAME("h2250LogicalChannelAckParameters") SEQ, 5, 5, 7, DECODE | EXT,
+        offsetof(OpenLogicalChannelAck_forwardMultiplexAckParameters,
+                 h2250LogicalChannelAckParameters),
+        _H2250LogicalChannelAckParameters},
+};
+
+static field_t _OpenLogicalChannelAck[] = {    /* SEQUENCE */
+       {FNAME("forwardLogicalChannelNumber") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("reverseLogicalChannelParameters") SEQ, 2, 3, 4,
+        DECODE | EXT | OPT, offsetof(OpenLogicalChannelAck,
+                                     reverseLogicalChannelParameters),
+        _OpenLogicalChannelAck_reverseLogicalChannelParameters},
+       {FNAME("separateStack") SEQ, 2, 4, 5, SKIP | EXT | OPT, 0, NULL},
+       {FNAME("forwardMultiplexAckParameters") CHOICE, 0, 1, 1,
+        DECODE | EXT | OPT, offsetof(OpenLogicalChannelAck,
+                                     forwardMultiplexAckParameters),
+        _OpenLogicalChannelAck_forwardMultiplexAckParameters},
+       {FNAME("encryptionSync") SEQ, 2, 4, 4, STOP | EXT | OPT, 0, NULL},
+};
+
+static field_t _ResponseMessage[] = {  /* CHOICE */
+       {FNAME("nonStandard") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+       {FNAME("masterSlaveDeterminationAck") SEQ, 0, 1, 1, STOP | EXT, 0,
+        NULL},
+       {FNAME("masterSlaveDeterminationReject") SEQ, 0, 1, 1, STOP | EXT, 0,
+        NULL},
+       {FNAME("terminalCapabilitySetAck") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+       {FNAME("terminalCapabilitySetReject") SEQ, 0, 2, 2, STOP | EXT, 0,
+        NULL},
+       {FNAME("openLogicalChannelAck") SEQ, 1, 2, 5, DECODE | EXT,
+        offsetof(ResponseMessage, openLogicalChannelAck),
+        _OpenLogicalChannelAck},
+       {FNAME("openLogicalChannelReject") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+       {FNAME("closeLogicalChannelAck") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+       {FNAME("requestChannelCloseAck") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+       {FNAME("requestChannelCloseReject") SEQ, 0, 2, 2, STOP | EXT, 0,
+        NULL},
+       {FNAME("multiplexEntrySendAck") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+       {FNAME("multiplexEntrySendReject") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+       {FNAME("requestMultiplexEntryAck") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+       {FNAME("requestMultiplexEntryReject") SEQ, 0, 2, 2, STOP | EXT, 0,
+        NULL},
+       {FNAME("requestModeAck") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+       {FNAME("requestModeReject") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+       {FNAME("roundTripDelayResponse") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+       {FNAME("maintenanceLoopAck") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+       {FNAME("maintenanceLoopReject") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+       {FNAME("communicationModeResponse") CHOICE, 0, 1, 1, STOP | EXT, 0,
+        NULL},
+       {FNAME("conferenceResponse") CHOICE, 3, 8, 16, STOP | EXT, 0, NULL},
+       {FNAME("multilinkResponse") CHOICE, 3, 5, 5, STOP | EXT, 0, NULL},
+       {FNAME("logicalChannelRateAcknowledge") SEQ, 0, 3, 3, STOP | EXT, 0,
+        NULL},
+       {FNAME("logicalChannelRateReject") SEQ, 1, 4, 4, STOP | EXT, 0, NULL},
+};
+
+static field_t _MultimediaSystemControlMessage[] = {   /* CHOICE */
+       {FNAME("request") CHOICE, 4, 11, 15, DECODE | EXT,
+        offsetof(MultimediaSystemControlMessage, request), _RequestMessage},
+       {FNAME("response") CHOICE, 5, 19, 24, DECODE | EXT,
+        offsetof(MultimediaSystemControlMessage, response),
+        _ResponseMessage},
+       {FNAME("command") CHOICE, 3, 7, 12, STOP | EXT, 0, NULL},
+       {FNAME("indication") CHOICE, 4, 14, 23, STOP | EXT, 0, NULL},
+};
+
+static field_t _H323_UU_PDU_h245Control[] = {  /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 2, 4, 4, DECODE | OPEN | EXT,
+        sizeof(MultimediaSystemControlMessage),
+        _MultimediaSystemControlMessage}
+       ,
+};
+
+static field_t _H323_UU_PDU[] = {      /* SEQUENCE */
+       {FNAME("h323-message-body") CHOICE, 3, 7, 13, DECODE | EXT,
+        offsetof(H323_UU_PDU, h323_message_body),
+        _H323_UU_PDU_h323_message_body},
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("h4501SupplementaryService") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        NULL},
+       {FNAME("h245Tunneling") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("h245Control") SEQOF, SEMI, 0, 4, DECODE | OPT,
+        offsetof(H323_UU_PDU, h245Control), _H323_UU_PDU_h245Control},
+       {FNAME("nonStandardControl") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("callLinkage") SEQ, 2, 2, 2, STOP | EXT | OPT, 0, NULL},
+       {FNAME("tunnelledSignallingMessage") SEQ, 2, 4, 4, STOP | EXT | OPT,
+        0, NULL},
+       {FNAME("provisionalRespToH245Tunneling") NUL, FIXD, 0, 0, STOP | OPT,
+        0, NULL},
+       {FNAME("stimulusControl") SEQ, 3, 3, 3, STOP | EXT | OPT, 0, NULL},
+       {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _H323_UserInformation[] = {     /* SEQUENCE */
+       {FNAME("h323-uu-pdu") SEQ, 1, 2, 11, DECODE | EXT,
+        offsetof(H323_UserInformation, h323_uu_pdu), _H323_UU_PDU},
+       {FNAME("user-data") SEQ, 0, 2, 2, STOP | EXT | OPT, 0, NULL},
+};
+
+static field_t _GatekeeperRequest[] = {        /* SEQUENCE */
+       {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("rasAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+        offsetof(GatekeeperRequest, rasAddress), _TransportAddress},
+       {FNAME("endpointType") SEQ, 6, 8, 10, STOP | EXT, 0, NULL},
+       {FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+       {FNAME("callServices") SEQ, 0, 8, 8, STOP | EXT | OPT, 0, NULL},
+       {FNAME("endpointAlias") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("alternateEndpoints") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("authenticationCapability") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+        NULL},
+       {FNAME("algorithmOIDs") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("integrity") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("supportsAltGK") NUL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+       {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _GatekeeperConfirm[] = {        /* SEQUENCE */
+       {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("rasAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+        offsetof(GatekeeperConfirm, rasAddress), _TransportAddress},
+       {FNAME("alternateGatekeeper") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("authenticationMode") CHOICE, 3, 7, 8, STOP | EXT | OPT, 0,
+        NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("algorithmOID") OID, BYTE, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("integrity") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+       {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _RegistrationRequest_callSignalAddress[] = {    /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
+        sizeof(TransportAddress), _TransportAddress}
+       ,
+};
+
+static field_t _RegistrationRequest_rasAddress[] = {   /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
+        sizeof(TransportAddress), _TransportAddress}
+       ,
+};
+
+static field_t _RegistrationRequest_terminalAlias[] = {        /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _RegistrationRequest[] = {      /* SEQUENCE */
+       {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("discoveryComplete") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("callSignalAddress") SEQOF, SEMI, 0, 10, DECODE,
+        offsetof(RegistrationRequest, callSignalAddress),
+        _RegistrationRequest_callSignalAddress},
+       {FNAME("rasAddress") SEQOF, SEMI, 0, 10, DECODE,
+        offsetof(RegistrationRequest, rasAddress),
+        _RegistrationRequest_rasAddress},
+       {FNAME("terminalType") SEQ, 6, 8, 10, SKIP | EXT, 0, _EndpointType},
+       {FNAME("terminalAlias") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _RegistrationRequest_terminalAlias},
+       {FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("endpointVendor") SEQ, 2, 3, 3, SKIP | EXT, 0,
+        _VendorIdentifier},
+       {FNAME("alternateEndpoints") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("timeToLive") INT, CONS, 1, 0, DECODE | OPT,
+        offsetof(RegistrationRequest, timeToLive), NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("keepAlive") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+       {FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+       {FNAME("willSupplyUUIEs") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+       {FNAME("maintainConnection") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+       {FNAME("alternateTransportAddresses") SEQ, 1, 1, 1, STOP | EXT | OPT,
+        0, NULL},
+       {FNAME("additiveRegistration") NUL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("terminalAliasPattern") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+        NULL},
+       {FNAME("supportsAltGK") NUL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("usageReportingCapability") SEQ, 3, 4, 4, STOP | EXT | OPT, 0,
+        NULL},
+       {FNAME("multipleCalls") BOOL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("supportedH248Packages") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+        NULL},
+       {FNAME("callCreditCapability") SEQ, 2, 2, 2, STOP | EXT | OPT, 0,
+        NULL},
+       {FNAME("capacityReportingCapability") SEQ, 0, 1, 1, STOP | EXT | OPT,
+        0, NULL},
+       {FNAME("capacity") SEQ, 2, 2, 2, STOP | EXT | OPT, 0, NULL},
+       {FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+       {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _RegistrationConfirm_callSignalAddress[] = {    /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
+        sizeof(TransportAddress), _TransportAddress}
+       ,
+};
+
+static field_t _RegistrationConfirm_terminalAlias[] = {        /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _RegistrationConfirm[] = {      /* SEQUENCE */
+       {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("callSignalAddress") SEQOF, SEMI, 0, 10, DECODE,
+        offsetof(RegistrationConfirm, callSignalAddress),
+        _RegistrationConfirm_callSignalAddress},
+       {FNAME("terminalAlias") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _RegistrationConfirm_terminalAlias},
+       {FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, SKIP, 0, NULL},
+       {FNAME("alternateGatekeeper") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+       {FNAME("timeToLive") INT, CONS, 1, 0, DECODE | OPT,
+        offsetof(RegistrationConfirm, timeToLive), NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("willRespondToIRR") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+       {FNAME("preGrantedARQ") SEQ, 0, 4, 8, STOP | EXT | OPT, 0, NULL},
+       {FNAME("maintainConnection") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+       {FNAME("serviceControl") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("supportsAdditiveRegistration") NUL, FIXD, 0, 0, STOP | OPT, 0,
+        NULL},
+       {FNAME("terminalAliasPattern") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+        NULL},
+       {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("usageSpec") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("featureServerAlias") CHOICE, 1, 2, 7, STOP | EXT | OPT, 0,
+        NULL},
+       {FNAME("capacityReportingSpec") SEQ, 0, 1, 1, STOP | EXT | OPT, 0,
+        NULL},
+       {FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+       {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _UnregistrationRequest_callSignalAddress[] = {  /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
+        sizeof(TransportAddress), _TransportAddress}
+       ,
+};
+
+static field_t _UnregistrationRequest[] = {    /* SEQUENCE */
+       {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("callSignalAddress") SEQOF, SEMI, 0, 10, DECODE,
+        offsetof(UnregistrationRequest, callSignalAddress),
+        _UnregistrationRequest_callSignalAddress},
+       {FNAME("endpointAlias") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+       {FNAME("alternateEndpoints") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("reason") CHOICE, 2, 4, 5, STOP | EXT | OPT, 0, NULL},
+       {FNAME("endpointAliasPattern") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+        NULL},
+       {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("alternateGatekeeper") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _CallModel[] = {        /* CHOICE */
+       {FNAME("direct") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+       {FNAME("gatekeeperRouted") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _AdmissionRequest_destinationInfo[] = { /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _AdmissionRequest_destExtraCallInfo[] = {       /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _AdmissionRequest_srcInfo[] = { /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _AdmissionRequest[] = { /* SEQUENCE */
+       {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("callType") CHOICE, 2, 4, 4, SKIP | EXT, 0, _CallType},
+       {FNAME("callModel") CHOICE, 1, 2, 2, SKIP | EXT | OPT, 0, _CallModel},
+       {FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, SKIP, 0, NULL},
+       {FNAME("destinationInfo") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _AdmissionRequest_destinationInfo},
+       {FNAME("destCallSignalAddress") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+        offsetof(AdmissionRequest, destCallSignalAddress),
+        _TransportAddress},
+       {FNAME("destExtraCallInfo") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+        _AdmissionRequest_destExtraCallInfo},
+       {FNAME("srcInfo") SEQOF, SEMI, 0, 0, SKIP, 0,
+        _AdmissionRequest_srcInfo},
+       {FNAME("srcCallSignalAddress") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+        offsetof(AdmissionRequest, srcCallSignalAddress), _TransportAddress},
+       {FNAME("bandWidth") INT, CONS, 0, 0, STOP, 0, NULL},
+       {FNAME("callReferenceValue") INT, WORD, 0, 0, STOP, 0, NULL},
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("callServices") SEQ, 0, 8, 8, STOP | EXT | OPT, 0, NULL},
+       {FNAME("conferenceID") OCTSTR, FIXD, 16, 0, STOP, 0, NULL},
+       {FNAME("activeMC") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+       {FNAME("answerCall") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+       {FNAME("canMapAlias") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+       {FNAME("callIdentifier") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+       {FNAME("srcAlternatives") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("destAlternatives") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("transportQOS") CHOICE, 2, 3, 3, STOP | EXT | OPT, 0, NULL},
+       {FNAME("willSupplyUUIEs") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+       {FNAME("callLinkage") SEQ, 2, 2, 2, STOP | EXT | OPT, 0, NULL},
+       {FNAME("gatewayDataRate") SEQ, 2, 3, 3, STOP | EXT | OPT, 0, NULL},
+       {FNAME("capacity") SEQ, 2, 2, 2, STOP | EXT | OPT, 0, NULL},
+       {FNAME("circuitInfo") SEQ, 3, 3, 3, STOP | EXT | OPT, 0, NULL},
+       {FNAME("desiredProtocols") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("desiredTunnelledProtocol") SEQ, 1, 2, 2, STOP | EXT | OPT, 0,
+        NULL},
+       {FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+       {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _AdmissionConfirm[] = { /* SEQUENCE */
+       {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("bandWidth") INT, CONS, 0, 0, SKIP, 0, NULL},
+       {FNAME("callModel") CHOICE, 1, 2, 2, SKIP | EXT, 0, _CallModel},
+       {FNAME("destCallSignalAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+        offsetof(AdmissionConfirm, destCallSignalAddress),
+        _TransportAddress},
+       {FNAME("irrFrequency") INT, WORD, 1, 0, STOP | OPT, 0, NULL},
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("destinationInfo") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("destExtraCallInfo") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("destinationType") SEQ, 6, 8, 10, STOP | EXT | OPT, 0, NULL},
+       {FNAME("remoteExtensionAddress") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+        NULL},
+       {FNAME("alternateEndpoints") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("transportQOS") CHOICE, 2, 3, 3, STOP | EXT | OPT, 0, NULL},
+       {FNAME("willRespondToIRR") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+       {FNAME("uuiesRequested") SEQ, 0, 9, 13, STOP | EXT, 0, NULL},
+       {FNAME("language") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("alternateTransportAddresses") SEQ, 1, 1, 1, STOP | EXT | OPT,
+        0, NULL},
+       {FNAME("useSpecifiedTransport") CHOICE, 1, 2, 2, STOP | EXT | OPT, 0,
+        NULL},
+       {FNAME("circuitInfo") SEQ, 3, 3, 3, STOP | EXT | OPT, 0, NULL},
+       {FNAME("usageSpec") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("supportedProtocols") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("serviceControl") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("multipleCalls") BOOL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+       {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _LocationRequest_destinationInfo[] = {  /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _LocationRequest[] = {  /* SEQUENCE */
+       {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+       {FNAME("destinationInfo") SEQOF, SEMI, 0, 0, SKIP, 0,
+        _LocationRequest_destinationInfo},
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("replyAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+        offsetof(LocationRequest, replyAddress), _TransportAddress},
+       {FNAME("sourceInfo") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("canMapAlias") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+       {FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("desiredProtocols") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("desiredTunnelledProtocol") SEQ, 1, 2, 2, STOP | EXT | OPT, 0,
+        NULL},
+       {FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+       {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("hopCount") INT, 8, 1, 0, STOP | OPT, 0, NULL},
+       {FNAME("circuitInfo") SEQ, 3, 3, 3, STOP | EXT | OPT, 0, NULL},
+};
+
+static field_t _LocationConfirm[] = {  /* SEQUENCE */
+       {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("callSignalAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+        offsetof(LocationConfirm, callSignalAddress), _TransportAddress},
+       {FNAME("rasAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+        offsetof(LocationConfirm, rasAddress), _TransportAddress},
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("destinationInfo") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("destExtraCallInfo") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("destinationType") SEQ, 6, 8, 10, STOP | EXT | OPT, 0, NULL},
+       {FNAME("remoteExtensionAddress") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+        NULL},
+       {FNAME("alternateEndpoints") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("alternateTransportAddresses") SEQ, 1, 1, 1, STOP | EXT | OPT,
+        0, NULL},
+       {FNAME("supportedProtocols") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("multipleCalls") BOOL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+       {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("circuitInfo") SEQ, 3, 3, 3, STOP | EXT | OPT, 0, NULL},
+       {FNAME("serviceControl") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _InfoRequestResponse_callSignalAddress[] = {    /* SEQUENCE OF */
+       {FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
+        sizeof(TransportAddress), _TransportAddress}
+       ,
+};
+
+static field_t _InfoRequestResponse[] = {      /* SEQUENCE */
+       {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+        _NonStandardParameter},
+       {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+       {FNAME("endpointType") SEQ, 6, 8, 10, SKIP | EXT, 0, _EndpointType},
+       {FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, SKIP, 0, NULL},
+       {FNAME("rasAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+        offsetof(InfoRequestResponse, rasAddress), _TransportAddress},
+       {FNAME("callSignalAddress") SEQOF, SEMI, 0, 10, DECODE,
+        offsetof(InfoRequestResponse, callSignalAddress),
+        _InfoRequestResponse_callSignalAddress},
+       {FNAME("endpointAlias") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("perCallInfo") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+       {FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+       {FNAME("needResponse") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+       {FNAME("capacity") SEQ, 2, 2, 2, STOP | EXT | OPT, 0, NULL},
+       {FNAME("irrStatus") CHOICE, 2, 4, 4, STOP | EXT | OPT, 0, NULL},
+       {FNAME("unsolicited") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+       {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _RasMessage[] = {       /* CHOICE */
+       {FNAME("gatekeeperRequest") SEQ, 4, 8, 18, DECODE | EXT,
+        offsetof(RasMessage, gatekeeperRequest), _GatekeeperRequest},
+       {FNAME("gatekeeperConfirm") SEQ, 2, 5, 14, DECODE | EXT,
+        offsetof(RasMessage, gatekeeperConfirm), _GatekeeperConfirm},
+       {FNAME("gatekeeperReject") SEQ, 2, 5, 11, STOP | EXT, 0, NULL},
+       {FNAME("registrationRequest") SEQ, 3, 10, 31, DECODE | EXT,
+        offsetof(RasMessage, registrationRequest), _RegistrationRequest},
+       {FNAME("registrationConfirm") SEQ, 3, 7, 24, DECODE | EXT,
+        offsetof(RasMessage, registrationConfirm), _RegistrationConfirm},
+       {FNAME("registrationReject") SEQ, 2, 5, 11, STOP | EXT, 0, NULL},
+       {FNAME("unregistrationRequest") SEQ, 3, 5, 15, DECODE | EXT,
+        offsetof(RasMessage, unregistrationRequest), _UnregistrationRequest},
+       {FNAME("unregistrationConfirm") SEQ, 1, 2, 6, STOP | EXT, 0, NULL},
+       {FNAME("unregistrationReject") SEQ, 1, 3, 8, STOP | EXT, 0, NULL},
+       {FNAME("admissionRequest") SEQ, 7, 16, 34, DECODE | EXT,
+        offsetof(RasMessage, admissionRequest), _AdmissionRequest},
+       {FNAME("admissionConfirm") SEQ, 2, 6, 27, DECODE | EXT,
+        offsetof(RasMessage, admissionConfirm), _AdmissionConfirm},
+       {FNAME("admissionReject") SEQ, 1, 3, 11, STOP | EXT, 0, NULL},
+       {FNAME("bandwidthRequest") SEQ, 2, 7, 18, STOP | EXT, 0, NULL},
+       {FNAME("bandwidthConfirm") SEQ, 1, 3, 8, STOP | EXT, 0, NULL},
+       {FNAME("bandwidthReject") SEQ, 1, 4, 9, STOP | EXT, 0, NULL},
+       {FNAME("disengageRequest") SEQ, 1, 6, 19, STOP | EXT, 0, NULL},
+       {FNAME("disengageConfirm") SEQ, 1, 2, 9, STOP | EXT, 0, NULL},
+       {FNAME("disengageReject") SEQ, 1, 3, 8, STOP | EXT, 0, NULL},
+       {FNAME("locationRequest") SEQ, 2, 5, 17, DECODE | EXT,
+        offsetof(RasMessage, locationRequest), _LocationRequest},
+       {FNAME("locationConfirm") SEQ, 1, 4, 19, DECODE | EXT,
+        offsetof(RasMessage, locationConfirm), _LocationConfirm},
+       {FNAME("locationReject") SEQ, 1, 3, 10, STOP | EXT, 0, NULL},
+       {FNAME("infoRequest") SEQ, 2, 4, 15, STOP | EXT, 0, NULL},
+       {FNAME("infoRequestResponse") SEQ, 3, 8, 16, DECODE | EXT,
+        offsetof(RasMessage, infoRequestResponse), _InfoRequestResponse},
+       {FNAME("nonStandardMessage") SEQ, 0, 2, 7, STOP | EXT, 0, NULL},
+       {FNAME("unknownMessageResponse") SEQ, 0, 1, 5, STOP | EXT, 0, NULL},
+       {FNAME("requestInProgress") SEQ, 4, 6, 6, STOP | EXT, 0, NULL},
+       {FNAME("resourcesAvailableIndicate") SEQ, 4, 9, 11, STOP | EXT, 0,
+        NULL},
+       {FNAME("resourcesAvailableConfirm") SEQ, 4, 6, 7, STOP | EXT, 0,
+        NULL},
+       {FNAME("infoRequestAck") SEQ, 4, 5, 5, STOP | EXT, 0, NULL},
+       {FNAME("infoRequestNak") SEQ, 5, 7, 7, STOP | EXT, 0, NULL},
+       {FNAME("serviceControlIndication") SEQ, 8, 10, 10, STOP | EXT, 0,
+        NULL},
+       {FNAME("serviceControlResponse") SEQ, 7, 8, 8, STOP | EXT, 0, NULL},
+};
diff --git a/net/ipv4/netfilter/ip_conntrack_helper_h323_types.h b/net/ipv4/netfilter/ip_conntrack_helper_h323_types.h
new file mode 100644 (file)
index 0000000..cc98f7a
--- /dev/null
@@ -0,0 +1,938 @@
+/* Generated by Jing Min Zhao's ASN.1 parser, Mar 15 2006
+ *
+ * Copyright (c) 2006 Jing Min Zhao <zhaojingmin@users.sourceforge.net>
+ *
+ * This source code is licensed under General Public License version 2.
+ */
+
+typedef struct TransportAddress_ipAddress {    /* SEQUENCE */
+       int options;            /* No use */
+       unsigned ip;
+} TransportAddress_ipAddress;
+
+typedef struct TransportAddress {      /* CHOICE */
+       enum {
+               eTransportAddress_ipAddress,
+               eTransportAddress_ipSourceRoute,
+               eTransportAddress_ipxAddress,
+               eTransportAddress_ip6Address,
+               eTransportAddress_netBios,
+               eTransportAddress_nsap,
+               eTransportAddress_nonStandardAddress,
+       } choice;
+       union {
+               TransportAddress_ipAddress ipAddress;
+       };
+} TransportAddress;
+
+typedef struct DataProtocolCapability {        /* CHOICE */
+       enum {
+               eDataProtocolCapability_nonStandard,
+               eDataProtocolCapability_v14buffered,
+               eDataProtocolCapability_v42lapm,
+               eDataProtocolCapability_hdlcFrameTunnelling,
+               eDataProtocolCapability_h310SeparateVCStack,
+               eDataProtocolCapability_h310SingleVCStack,
+               eDataProtocolCapability_transparent,
+               eDataProtocolCapability_segmentationAndReassembly,
+               eDataProtocolCapability_hdlcFrameTunnelingwSAR,
+               eDataProtocolCapability_v120,
+               eDataProtocolCapability_separateLANStack,
+               eDataProtocolCapability_v76wCompression,
+               eDataProtocolCapability_tcp,
+               eDataProtocolCapability_udp,
+       } choice;
+} DataProtocolCapability;
+
+typedef struct DataApplicationCapability_application { /* CHOICE */
+       enum {
+               eDataApplicationCapability_application_nonStandard,
+               eDataApplicationCapability_application_t120,
+               eDataApplicationCapability_application_dsm_cc,
+               eDataApplicationCapability_application_userData,
+               eDataApplicationCapability_application_t84,
+               eDataApplicationCapability_application_t434,
+               eDataApplicationCapability_application_h224,
+               eDataApplicationCapability_application_nlpid,
+               eDataApplicationCapability_application_dsvdControl,
+               eDataApplicationCapability_application_h222DataPartitioning,
+               eDataApplicationCapability_application_t30fax,
+               eDataApplicationCapability_application_t140,
+               eDataApplicationCapability_application_t38fax,
+               eDataApplicationCapability_application_genericDataCapability,
+       } choice;
+       union {
+               DataProtocolCapability t120;
+       };
+} DataApplicationCapability_application;
+
+typedef struct DataApplicationCapability {     /* SEQUENCE */
+       int options;            /* No use */
+       DataApplicationCapability_application application;
+} DataApplicationCapability;
+
+typedef struct DataType {      /* CHOICE */
+       enum {
+               eDataType_nonStandard,
+               eDataType_nullData,
+               eDataType_videoData,
+               eDataType_audioData,
+               eDataType_data,
+               eDataType_encryptionData,
+               eDataType_h235Control,
+               eDataType_h235Media,
+               eDataType_multiplexedStream,
+       } choice;
+       union {
+               DataApplicationCapability data;
+       };
+} DataType;
+
+typedef struct UnicastAddress_iPAddress {      /* SEQUENCE */
+       int options;            /* No use */
+       unsigned network;
+} UnicastAddress_iPAddress;
+
+typedef struct UnicastAddress {        /* CHOICE */
+       enum {
+               eUnicastAddress_iPAddress,
+               eUnicastAddress_iPXAddress,
+               eUnicastAddress_iP6Address,
+               eUnicastAddress_netBios,
+               eUnicastAddress_iPSourceRouteAddress,
+               eUnicastAddress_nsap,
+               eUnicastAddress_nonStandardAddress,
+       } choice;
+       union {
+               UnicastAddress_iPAddress iPAddress;
+       };
+} UnicastAddress;
+
+typedef struct H245_TransportAddress { /* CHOICE */
+       enum {
+               eH245_TransportAddress_unicastAddress,
+               eH245_TransportAddress_multicastAddress,
+       } choice;
+       union {
+               UnicastAddress unicastAddress;
+       };
+} H245_TransportAddress;
+
+typedef struct H2250LogicalChannelParameters { /* SEQUENCE */
+       enum {
+               eH2250LogicalChannelParameters_nonStandard = (1 << 31),
+               eH2250LogicalChannelParameters_associatedSessionID =
+                   (1 << 30),
+               eH2250LogicalChannelParameters_mediaChannel = (1 << 29),
+               eH2250LogicalChannelParameters_mediaGuaranteedDelivery =
+                   (1 << 28),
+               eH2250LogicalChannelParameters_mediaControlChannel =
+                   (1 << 27),
+               eH2250LogicalChannelParameters_mediaControlGuaranteedDelivery
+                   = (1 << 26),
+               eH2250LogicalChannelParameters_silenceSuppression = (1 << 25),
+               eH2250LogicalChannelParameters_destination = (1 << 24),
+               eH2250LogicalChannelParameters_dynamicRTPPayloadType =
+                   (1 << 23),
+               eH2250LogicalChannelParameters_mediaPacketization = (1 << 22),
+               eH2250LogicalChannelParameters_transportCapability =
+                   (1 << 21),
+               eH2250LogicalChannelParameters_redundancyEncoding = (1 << 20),
+               eH2250LogicalChannelParameters_source = (1 << 19),
+       } options;
+       H245_TransportAddress mediaChannel;
+       H245_TransportAddress mediaControlChannel;
+} H2250LogicalChannelParameters;
+
+typedef struct OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters {        /* CHOICE */
+       enum {
+               eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_h222LogicalChannelParameters,
+               eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_h223LogicalChannelParameters,
+               eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_v76LogicalChannelParameters,
+               eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters,
+               eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_none,
+       } choice;
+       union {
+               H2250LogicalChannelParameters h2250LogicalChannelParameters;
+       };
+} OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters;
+
+typedef struct OpenLogicalChannel_forwardLogicalChannelParameters {    /* SEQUENCE */
+       enum {
+               eOpenLogicalChannel_forwardLogicalChannelParameters_portNumber
+                   = (1 << 31),
+               eOpenLogicalChannel_forwardLogicalChannelParameters_forwardLogicalChannelDependency
+                   = (1 << 30),
+               eOpenLogicalChannel_forwardLogicalChannelParameters_replacementFor
+                   = (1 << 29),
+       } options;
+       DataType dataType;
+       OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters
+           multiplexParameters;
+} OpenLogicalChannel_forwardLogicalChannelParameters;
+
+typedef struct OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters {        /* CHOICE */
+       enum {
+               eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters_h223LogicalChannelParameters,
+               eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters_v76LogicalChannelParameters,
+               eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters,
+       } choice;
+       union {
+               H2250LogicalChannelParameters h2250LogicalChannelParameters;
+       };
+} OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters;
+
+typedef struct OpenLogicalChannel_reverseLogicalChannelParameters {    /* SEQUENCE */
+       enum {
+               eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters
+                   = (1 << 31),
+               eOpenLogicalChannel_reverseLogicalChannelParameters_reverseLogicalChannelDependency
+                   = (1 << 30),
+               eOpenLogicalChannel_reverseLogicalChannelParameters_replacementFor
+                   = (1 << 29),
+       } options;
+       OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters
+           multiplexParameters;
+} OpenLogicalChannel_reverseLogicalChannelParameters;
+
+typedef struct NetworkAccessParameters_networkAddress {        /* CHOICE */
+       enum {
+               eNetworkAccessParameters_networkAddress_q2931Address,
+               eNetworkAccessParameters_networkAddress_e164Address,
+               eNetworkAccessParameters_networkAddress_localAreaAddress,
+       } choice;
+       union {
+               H245_TransportAddress localAreaAddress;
+       };
+} NetworkAccessParameters_networkAddress;
+
+typedef struct NetworkAccessParameters {       /* SEQUENCE */
+       enum {
+               eNetworkAccessParameters_distribution = (1 << 31),
+               eNetworkAccessParameters_externalReference = (1 << 30),
+               eNetworkAccessParameters_t120SetupProcedure = (1 << 29),
+       } options;
+       NetworkAccessParameters_networkAddress networkAddress;
+} NetworkAccessParameters;
+
+typedef struct OpenLogicalChannel {    /* SEQUENCE */
+       enum {
+               eOpenLogicalChannel_reverseLogicalChannelParameters =
+                   (1 << 31),
+               eOpenLogicalChannel_separateStack = (1 << 30),
+               eOpenLogicalChannel_encryptionSync = (1 << 29),
+       } options;
+       OpenLogicalChannel_forwardLogicalChannelParameters
+           forwardLogicalChannelParameters;
+       OpenLogicalChannel_reverseLogicalChannelParameters
+           reverseLogicalChannelParameters;
+       NetworkAccessParameters separateStack;
+} OpenLogicalChannel;
+
+typedef struct Setup_UUIE_fastStart {  /* SEQUENCE OF */
+       int count;
+       OpenLogicalChannel item[30];
+} Setup_UUIE_fastStart;
+
+typedef struct Setup_UUIE {    /* SEQUENCE */
+       enum {
+               eSetup_UUIE_h245Address = (1 << 31),
+               eSetup_UUIE_sourceAddress = (1 << 30),
+               eSetup_UUIE_destinationAddress = (1 << 29),
+               eSetup_UUIE_destCallSignalAddress = (1 << 28),
+               eSetup_UUIE_destExtraCallInfo = (1 << 27),
+               eSetup_UUIE_destExtraCRV = (1 << 26),
+               eSetup_UUIE_callServices = (1 << 25),
+               eSetup_UUIE_sourceCallSignalAddress = (1 << 24),
+               eSetup_UUIE_remoteExtensionAddress = (1 << 23),
+               eSetup_UUIE_callIdentifier = (1 << 22),
+               eSetup_UUIE_h245SecurityCapability = (1 << 21),
+               eSetup_UUIE_tokens = (1 << 20),
+               eSetup_UUIE_cryptoTokens = (1 << 19),
+               eSetup_UUIE_fastStart = (1 << 18),
+               eSetup_UUIE_mediaWaitForConnect = (1 << 17),
+               eSetup_UUIE_canOverlapSend = (1 << 16),
+               eSetup_UUIE_endpointIdentifier = (1 << 15),
+               eSetup_UUIE_multipleCalls = (1 << 14),
+               eSetup_UUIE_maintainConnection = (1 << 13),
+               eSetup_UUIE_connectionParameters = (1 << 12),
+               eSetup_UUIE_language = (1 << 11),
+               eSetup_UUIE_presentationIndicator = (1 << 10),
+               eSetup_UUIE_screeningIndicator = (1 << 9),
+               eSetup_UUIE_serviceControl = (1 << 8),
+               eSetup_UUIE_symmetricOperationRequired = (1 << 7),
+               eSetup_UUIE_capacity = (1 << 6),
+               eSetup_UUIE_circuitInfo = (1 << 5),
+               eSetup_UUIE_desiredProtocols = (1 << 4),
+               eSetup_UUIE_neededFeatures = (1 << 3),
+               eSetup_UUIE_desiredFeatures = (1 << 2),
+               eSetup_UUIE_supportedFeatures = (1 << 1),
+               eSetup_UUIE_parallelH245Control = (1 << 0),
+       } options;
+       TransportAddress h245Address;
+       TransportAddress destCallSignalAddress;
+       TransportAddress sourceCallSignalAddress;
+       Setup_UUIE_fastStart fastStart;
+} Setup_UUIE;
+
+typedef struct CallProceeding_UUIE_fastStart { /* SEQUENCE OF */
+       int count;
+       OpenLogicalChannel item[30];
+} CallProceeding_UUIE_fastStart;
+
+typedef struct CallProceeding_UUIE {   /* SEQUENCE */
+       enum {
+               eCallProceeding_UUIE_h245Address = (1 << 31),
+               eCallProceeding_UUIE_callIdentifier = (1 << 30),
+               eCallProceeding_UUIE_h245SecurityMode = (1 << 29),
+               eCallProceeding_UUIE_tokens = (1 << 28),
+               eCallProceeding_UUIE_cryptoTokens = (1 << 27),
+               eCallProceeding_UUIE_fastStart = (1 << 26),
+               eCallProceeding_UUIE_multipleCalls = (1 << 25),
+               eCallProceeding_UUIE_maintainConnection = (1 << 24),
+               eCallProceeding_UUIE_fastConnectRefused = (1 << 23),
+               eCallProceeding_UUIE_featureSet = (1 << 22),
+       } options;
+       TransportAddress h245Address;
+       CallProceeding_UUIE_fastStart fastStart;
+} CallProceeding_UUIE;
+
+typedef struct Connect_UUIE_fastStart {        /* SEQUENCE OF */
+       int count;
+       OpenLogicalChannel item[30];
+} Connect_UUIE_fastStart;
+
+typedef struct Connect_UUIE {  /* SEQUENCE */
+       enum {
+               eConnect_UUIE_h245Address = (1 << 31),
+               eConnect_UUIE_callIdentifier = (1 << 30),
+               eConnect_UUIE_h245SecurityMode = (1 << 29),
+               eConnect_UUIE_tokens = (1 << 28),
+               eConnect_UUIE_cryptoTokens = (1 << 27),
+               eConnect_UUIE_fastStart = (1 << 26),
+               eConnect_UUIE_multipleCalls = (1 << 25),
+               eConnect_UUIE_maintainConnection = (1 << 24),
+               eConnect_UUIE_language = (1 << 23),
+               eConnect_UUIE_connectedAddress = (1 << 22),
+               eConnect_UUIE_presentationIndicator = (1 << 21),
+               eConnect_UUIE_screeningIndicator = (1 << 20),
+               eConnect_UUIE_fastConnectRefused = (1 << 19),
+               eConnect_UUIE_serviceControl = (1 << 18),
+               eConnect_UUIE_capacity = (1 << 17),
+               eConnect_UUIE_featureSet = (1 << 16),
+       } options;
+       TransportAddress h245Address;
+       Connect_UUIE_fastStart fastStart;
+} Connect_UUIE;
+
+typedef struct Alerting_UUIE_fastStart {       /* SEQUENCE OF */
+       int count;
+       OpenLogicalChannel item[30];
+} Alerting_UUIE_fastStart;
+
+typedef struct Alerting_UUIE { /* SEQUENCE */
+       enum {
+               eAlerting_UUIE_h245Address = (1 << 31),
+               eAlerting_UUIE_callIdentifier = (1 << 30),
+               eAlerting_UUIE_h245SecurityMode = (1 << 29),
+               eAlerting_UUIE_tokens = (1 << 28),
+               eAlerting_UUIE_cryptoTokens = (1 << 27),
+               eAlerting_UUIE_fastStart = (1 << 26),
+               eAlerting_UUIE_multipleCalls = (1 << 25),
+               eAlerting_UUIE_maintainConnection = (1 << 24),
+               eAlerting_UUIE_alertingAddress = (1 << 23),
+               eAlerting_UUIE_presentationIndicator = (1 << 22),
+               eAlerting_UUIE_screeningIndicator = (1 << 21),
+               eAlerting_UUIE_fastConnectRefused = (1 << 20),
+               eAlerting_UUIE_serviceControl = (1 << 19),
+               eAlerting_UUIE_capacity = (1 << 18),
+               eAlerting_UUIE_featureSet = (1 << 17),
+       } options;
+       TransportAddress h245Address;
+       Alerting_UUIE_fastStart fastStart;
+} Alerting_UUIE;
+
+typedef struct Information_UUIE_fastStart {    /* SEQUENCE OF */
+       int count;
+       OpenLogicalChannel item[30];
+} Information_UUIE_fastStart;
+
+typedef struct Information_UUIE {      /* SEQUENCE */
+       enum {
+               eInformation_UUIE_callIdentifier = (1 << 31),
+               eInformation_UUIE_tokens = (1 << 30),
+               eInformation_UUIE_cryptoTokens = (1 << 29),
+               eInformation_UUIE_fastStart = (1 << 28),
+               eInformation_UUIE_fastConnectRefused = (1 << 27),
+               eInformation_UUIE_circuitInfo = (1 << 26),
+       } options;
+       Information_UUIE_fastStart fastStart;
+} Information_UUIE;
+
+typedef struct FacilityReason {        /* CHOICE */
+       enum {
+               eFacilityReason_routeCallToGatekeeper,
+               eFacilityReason_callForwarded,
+               eFacilityReason_routeCallToMC,
+               eFacilityReason_undefinedReason,
+               eFacilityReason_conferenceListChoice,
+               eFacilityReason_startH245,
+               eFacilityReason_noH245,
+               eFacilityReason_newTokens,
+               eFacilityReason_featureSetUpdate,
+               eFacilityReason_forwardedElements,
+               eFacilityReason_transportedInformation,
+       } choice;
+} FacilityReason;
+
+typedef struct Facility_UUIE_fastStart {       /* SEQUENCE OF */
+       int count;
+       OpenLogicalChannel item[30];
+} Facility_UUIE_fastStart;
+
+typedef struct Facility_UUIE { /* SEQUENCE */
+       enum {
+               eFacility_UUIE_alternativeAddress = (1 << 31),
+               eFacility_UUIE_alternativeAliasAddress = (1 << 30),
+               eFacility_UUIE_conferenceID = (1 << 29),
+               eFacility_UUIE_callIdentifier = (1 << 28),
+               eFacility_UUIE_destExtraCallInfo = (1 << 27),
+               eFacility_UUIE_remoteExtensionAddress = (1 << 26),
+               eFacility_UUIE_tokens = (1 << 25),
+               eFacility_UUIE_cryptoTokens = (1 << 24),
+               eFacility_UUIE_conferences = (1 << 23),
+               eFacility_UUIE_h245Address = (1 << 22),
+               eFacility_UUIE_fastStart = (1 << 21),
+               eFacility_UUIE_multipleCalls = (1 << 20),
+               eFacility_UUIE_maintainConnection = (1 << 19),
+               eFacility_UUIE_fastConnectRefused = (1 << 18),
+               eFacility_UUIE_serviceControl = (1 << 17),
+               eFacility_UUIE_circuitInfo = (1 << 16),
+               eFacility_UUIE_featureSet = (1 << 15),
+               eFacility_UUIE_destinationInfo = (1 << 14),
+               eFacility_UUIE_h245SecurityMode = (1 << 13),
+       } options;
+       FacilityReason reason;
+       TransportAddress h245Address;
+       Facility_UUIE_fastStart fastStart;
+} Facility_UUIE;
+
+typedef struct Progress_UUIE_fastStart {       /* SEQUENCE OF */
+       int count;
+       OpenLogicalChannel item[30];
+} Progress_UUIE_fastStart;
+
+typedef struct Progress_UUIE { /* SEQUENCE */
+       enum {
+               eProgress_UUIE_h245Address = (1 << 31),
+               eProgress_UUIE_h245SecurityMode = (1 << 30),
+               eProgress_UUIE_tokens = (1 << 29),
+               eProgress_UUIE_cryptoTokens = (1 << 28),
+               eProgress_UUIE_fastStart = (1 << 27),
+               eProgress_UUIE_multipleCalls = (1 << 26),
+               eProgress_UUIE_maintainConnection = (1 << 25),
+               eProgress_UUIE_fastConnectRefused = (1 << 24),
+       } options;
+       TransportAddress h245Address;
+       Progress_UUIE_fastStart fastStart;
+} Progress_UUIE;
+
+typedef struct H323_UU_PDU_h323_message_body { /* CHOICE */
+       enum {
+               eH323_UU_PDU_h323_message_body_setup,
+               eH323_UU_PDU_h323_message_body_callProceeding,
+               eH323_UU_PDU_h323_message_body_connect,
+               eH323_UU_PDU_h323_message_body_alerting,
+               eH323_UU_PDU_h323_message_body_information,
+               eH323_UU_PDU_h323_message_body_releaseComplete,
+               eH323_UU_PDU_h323_message_body_facility,
+               eH323_UU_PDU_h323_message_body_progress,
+               eH323_UU_PDU_h323_message_body_empty,
+               eH323_UU_PDU_h323_message_body_status,
+               eH323_UU_PDU_h323_message_body_statusInquiry,
+               eH323_UU_PDU_h323_message_body_setupAcknowledge,
+               eH323_UU_PDU_h323_message_body_notify,
+       } choice;
+       union {
+               Setup_UUIE setup;
+               CallProceeding_UUIE callProceeding;
+               Connect_UUIE connect;
+               Alerting_UUIE alerting;
+               Information_UUIE information;
+               Facility_UUIE facility;
+               Progress_UUIE progress;
+       };
+} H323_UU_PDU_h323_message_body;
+
+typedef struct RequestMessage {        /* CHOICE */
+       enum {
+               eRequestMessage_nonStandard,
+               eRequestMessage_masterSlaveDetermination,
+               eRequestMessage_terminalCapabilitySet,
+               eRequestMessage_openLogicalChannel,
+               eRequestMessage_closeLogicalChannel,
+               eRequestMessage_requestChannelClose,
+               eRequestMessage_multiplexEntrySend,
+               eRequestMessage_requestMultiplexEntry,
+               eRequestMessage_requestMode,
+               eRequestMessage_roundTripDelayRequest,
+               eRequestMessage_maintenanceLoopRequest,
+               eRequestMessage_communicationModeRequest,
+               eRequestMessage_conferenceRequest,
+               eRequestMessage_multilinkRequest,
+               eRequestMessage_logicalChannelRateRequest,
+       } choice;
+       union {
+               OpenLogicalChannel openLogicalChannel;
+       };
+} RequestMessage;
+
+typedef struct OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters {     /* CHOICE */
+       enum {
+               eOpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters_h222LogicalChannelParameters,
+               eOpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters,
+       } choice;
+       union {
+               H2250LogicalChannelParameters h2250LogicalChannelParameters;
+       };
+} OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters;
+
+typedef struct OpenLogicalChannelAck_reverseLogicalChannelParameters { /* SEQUENCE */
+       enum {
+               eOpenLogicalChannelAck_reverseLogicalChannelParameters_portNumber
+                   = (1 << 31),
+               eOpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters
+                   = (1 << 30),
+               eOpenLogicalChannelAck_reverseLogicalChannelParameters_replacementFor
+                   = (1 << 29),
+       } options;
+       OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters
+           multiplexParameters;
+} OpenLogicalChannelAck_reverseLogicalChannelParameters;
+
+typedef struct H2250LogicalChannelAckParameters {      /* SEQUENCE */
+       enum {
+               eH2250LogicalChannelAckParameters_nonStandard = (1 << 31),
+               eH2250LogicalChannelAckParameters_sessionID = (1 << 30),
+               eH2250LogicalChannelAckParameters_mediaChannel = (1 << 29),
+               eH2250LogicalChannelAckParameters_mediaControlChannel =
+                   (1 << 28),
+               eH2250LogicalChannelAckParameters_dynamicRTPPayloadType =
+                   (1 << 27),
+               eH2250LogicalChannelAckParameters_flowControlToZero =
+                   (1 << 26),
+               eH2250LogicalChannelAckParameters_portNumber = (1 << 25),
+       } options;
+       H245_TransportAddress mediaChannel;
+       H245_TransportAddress mediaControlChannel;
+} H2250LogicalChannelAckParameters;
+
+typedef struct OpenLogicalChannelAck_forwardMultiplexAckParameters {   /* CHOICE */
+       enum {
+               eOpenLogicalChannelAck_forwardMultiplexAckParameters_h2250LogicalChannelAckParameters,
+       } choice;
+       union {
+               H2250LogicalChannelAckParameters
+                   h2250LogicalChannelAckParameters;
+       };
+} OpenLogicalChannelAck_forwardMultiplexAckParameters;
+
+typedef struct OpenLogicalChannelAck { /* SEQUENCE */
+       enum {
+               eOpenLogicalChannelAck_reverseLogicalChannelParameters =
+                   (1 << 31),
+               eOpenLogicalChannelAck_separateStack = (1 << 30),
+               eOpenLogicalChannelAck_forwardMultiplexAckParameters =
+                   (1 << 29),
+               eOpenLogicalChannelAck_encryptionSync = (1 << 28),
+       } options;
+       OpenLogicalChannelAck_reverseLogicalChannelParameters
+           reverseLogicalChannelParameters;
+       OpenLogicalChannelAck_forwardMultiplexAckParameters
+           forwardMultiplexAckParameters;
+} OpenLogicalChannelAck;
+
+typedef struct ResponseMessage {       /* CHOICE */
+       enum {
+               eResponseMessage_nonStandard,
+               eResponseMessage_masterSlaveDeterminationAck,
+               eResponseMessage_masterSlaveDeterminationReject,
+               eResponseMessage_terminalCapabilitySetAck,
+               eResponseMessage_terminalCapabilitySetReject,
+               eResponseMessage_openLogicalChannelAck,
+               eResponseMessage_openLogicalChannelReject,
+               eResponseMessage_closeLogicalChannelAck,
+               eResponseMessage_requestChannelCloseAck,
+               eResponseMessage_requestChannelCloseReject,
+               eResponseMessage_multiplexEntrySendAck,
+               eResponseMessage_multiplexEntrySendReject,
+               eResponseMessage_requestMultiplexEntryAck,
+               eResponseMessage_requestMultiplexEntryReject,
+               eResponseMessage_requestModeAck,
+               eResponseMessage_requestModeReject,
+               eResponseMessage_roundTripDelayResponse,
+               eResponseMessage_maintenanceLoopAck,
+               eResponseMessage_maintenanceLoopReject,
+               eResponseMessage_communicationModeResponse,
+               eResponseMessage_conferenceResponse,
+               eResponseMessage_multilinkResponse,
+               eResponseMessage_logicalChannelRateAcknowledge,
+               eResponseMessage_logicalChannelRateReject,
+       } choice;
+       union {
+               OpenLogicalChannelAck openLogicalChannelAck;
+       };
+} ResponseMessage;
+
+typedef struct MultimediaSystemControlMessage {        /* CHOICE */
+       enum {
+               eMultimediaSystemControlMessage_request,
+               eMultimediaSystemControlMessage_response,
+               eMultimediaSystemControlMessage_command,
+               eMultimediaSystemControlMessage_indication,
+       } choice;
+       union {
+               RequestMessage request;
+               ResponseMessage response;
+       };
+} MultimediaSystemControlMessage;
+
+typedef struct H323_UU_PDU_h245Control {       /* SEQUENCE OF */
+       int count;
+       MultimediaSystemControlMessage item[4];
+} H323_UU_PDU_h245Control;
+
+typedef struct H323_UU_PDU {   /* SEQUENCE */
+       enum {
+               eH323_UU_PDU_nonStandardData = (1 << 31),
+               eH323_UU_PDU_h4501SupplementaryService = (1 << 30),
+               eH323_UU_PDU_h245Tunneling = (1 << 29),
+               eH323_UU_PDU_h245Control = (1 << 28),
+               eH323_UU_PDU_nonStandardControl = (1 << 27),
+               eH323_UU_PDU_callLinkage = (1 << 26),
+               eH323_UU_PDU_tunnelledSignallingMessage = (1 << 25),
+               eH323_UU_PDU_provisionalRespToH245Tunneling = (1 << 24),
+               eH323_UU_PDU_stimulusControl = (1 << 23),
+               eH323_UU_PDU_genericData = (1 << 22),
+       } options;
+       H323_UU_PDU_h323_message_body h323_message_body;
+       H323_UU_PDU_h245Control h245Control;
+} H323_UU_PDU;
+
+typedef struct H323_UserInformation {  /* SEQUENCE */
+       enum {
+               eH323_UserInformation_user_data = (1 << 31),
+       } options;
+       H323_UU_PDU h323_uu_pdu;
+} H323_UserInformation;
+
+typedef struct GatekeeperRequest {     /* SEQUENCE */
+       enum {
+               eGatekeeperRequest_nonStandardData = (1 << 31),
+               eGatekeeperRequest_gatekeeperIdentifier = (1 << 30),
+               eGatekeeperRequest_callServices = (1 << 29),
+               eGatekeeperRequest_endpointAlias = (1 << 28),
+               eGatekeeperRequest_alternateEndpoints = (1 << 27),
+               eGatekeeperRequest_tokens = (1 << 26),
+               eGatekeeperRequest_cryptoTokens = (1 << 25),
+               eGatekeeperRequest_authenticationCapability = (1 << 24),
+               eGatekeeperRequest_algorithmOIDs = (1 << 23),
+               eGatekeeperRequest_integrity = (1 << 22),
+               eGatekeeperRequest_integrityCheckValue = (1 << 21),
+               eGatekeeperRequest_supportsAltGK = (1 << 20),
+               eGatekeeperRequest_featureSet = (1 << 19),
+               eGatekeeperRequest_genericData = (1 << 18),
+       } options;
+       TransportAddress rasAddress;
+} GatekeeperRequest;
+
+typedef struct GatekeeperConfirm {     /* SEQUENCE */
+       enum {
+               eGatekeeperConfirm_nonStandardData = (1 << 31),
+               eGatekeeperConfirm_gatekeeperIdentifier = (1 << 30),
+               eGatekeeperConfirm_alternateGatekeeper = (1 << 29),
+               eGatekeeperConfirm_authenticationMode = (1 << 28),
+               eGatekeeperConfirm_tokens = (1 << 27),
+               eGatekeeperConfirm_cryptoTokens = (1 << 26),
+               eGatekeeperConfirm_algorithmOID = (1 << 25),
+               eGatekeeperConfirm_integrity = (1 << 24),
+               eGatekeeperConfirm_integrityCheckValue = (1 << 23),
+               eGatekeeperConfirm_featureSet = (1 << 22),
+               eGatekeeperConfirm_genericData = (1 << 21),
+       } options;
+       TransportAddress rasAddress;
+} GatekeeperConfirm;
+
+typedef struct RegistrationRequest_callSignalAddress { /* SEQUENCE OF */
+       int count;
+       TransportAddress item[10];
+} RegistrationRequest_callSignalAddress;
+
+typedef struct RegistrationRequest_rasAddress {        /* SEQUENCE OF */
+       int count;
+       TransportAddress item[10];
+} RegistrationRequest_rasAddress;
+
+typedef struct RegistrationRequest {   /* SEQUENCE */
+       enum {
+               eRegistrationRequest_nonStandardData = (1 << 31),
+               eRegistrationRequest_terminalAlias = (1 << 30),
+               eRegistrationRequest_gatekeeperIdentifier = (1 << 29),
+               eRegistrationRequest_alternateEndpoints = (1 << 28),
+               eRegistrationRequest_timeToLive = (1 << 27),
+               eRegistrationRequest_tokens = (1 << 26),
+               eRegistrationRequest_cryptoTokens = (1 << 25),
+               eRegistrationRequest_integrityCheckValue = (1 << 24),
+               eRegistrationRequest_keepAlive = (1 << 23),
+               eRegistrationRequest_endpointIdentifier = (1 << 22),
+               eRegistrationRequest_willSupplyUUIEs = (1 << 21),
+               eRegistrationRequest_maintainConnection = (1 << 20),
+               eRegistrationRequest_alternateTransportAddresses = (1 << 19),
+               eRegistrationRequest_additiveRegistration = (1 << 18),
+               eRegistrationRequest_terminalAliasPattern = (1 << 17),
+               eRegistrationRequest_supportsAltGK = (1 << 16),
+               eRegistrationRequest_usageReportingCapability = (1 << 15),
+               eRegistrationRequest_multipleCalls = (1 << 14),
+               eRegistrationRequest_supportedH248Packages = (1 << 13),
+               eRegistrationRequest_callCreditCapability = (1 << 12),
+               eRegistrationRequest_capacityReportingCapability = (1 << 11),
+               eRegistrationRequest_capacity = (1 << 10),
+               eRegistrationRequest_featureSet = (1 << 9),
+               eRegistrationRequest_genericData = (1 << 8),
+       } options;
+       RegistrationRequest_callSignalAddress callSignalAddress;
+       RegistrationRequest_rasAddress rasAddress;
+       unsigned timeToLive;
+} RegistrationRequest;
+
+typedef struct RegistrationConfirm_callSignalAddress { /* SEQUENCE OF */
+       int count;
+       TransportAddress item[10];
+} RegistrationConfirm_callSignalAddress;
+
+typedef struct RegistrationConfirm {   /* SEQUENCE */
+       enum {
+               eRegistrationConfirm_nonStandardData = (1 << 31),
+               eRegistrationConfirm_terminalAlias = (1 << 30),
+               eRegistrationConfirm_gatekeeperIdentifier = (1 << 29),
+               eRegistrationConfirm_alternateGatekeeper = (1 << 28),
+               eRegistrationConfirm_timeToLive = (1 << 27),
+               eRegistrationConfirm_tokens = (1 << 26),
+               eRegistrationConfirm_cryptoTokens = (1 << 25),
+               eRegistrationConfirm_integrityCheckValue = (1 << 24),
+               eRegistrationConfirm_willRespondToIRR = (1 << 23),
+               eRegistrationConfirm_preGrantedARQ = (1 << 22),
+               eRegistrationConfirm_maintainConnection = (1 << 21),
+               eRegistrationConfirm_serviceControl = (1 << 20),
+               eRegistrationConfirm_supportsAdditiveRegistration = (1 << 19),
+               eRegistrationConfirm_terminalAliasPattern = (1 << 18),
+               eRegistrationConfirm_supportedPrefixes = (1 << 17),
+               eRegistrationConfirm_usageSpec = (1 << 16),
+               eRegistrationConfirm_featureServerAlias = (1 << 15),
+               eRegistrationConfirm_capacityReportingSpec = (1 << 14),
+               eRegistrationConfirm_featureSet = (1 << 13),
+               eRegistrationConfirm_genericData = (1 << 12),
+       } options;
+       RegistrationConfirm_callSignalAddress callSignalAddress;
+       unsigned timeToLive;
+} RegistrationConfirm;
+
+typedef struct UnregistrationRequest_callSignalAddress {       /* SEQUENCE OF */
+       int count;
+       TransportAddress item[10];
+} UnregistrationRequest_callSignalAddress;
+
+typedef struct UnregistrationRequest { /* SEQUENCE */
+       enum {
+               eUnregistrationRequest_endpointAlias = (1 << 31),
+               eUnregistrationRequest_nonStandardData = (1 << 30),
+               eUnregistrationRequest_endpointIdentifier = (1 << 29),
+               eUnregistrationRequest_alternateEndpoints = (1 << 28),
+               eUnregistrationRequest_gatekeeperIdentifier = (1 << 27),
+               eUnregistrationRequest_tokens = (1 << 26),
+               eUnregistrationRequest_cryptoTokens = (1 << 25),
+               eUnregistrationRequest_integrityCheckValue = (1 << 24),
+               eUnregistrationRequest_reason = (1 << 23),
+               eUnregistrationRequest_endpointAliasPattern = (1 << 22),
+               eUnregistrationRequest_supportedPrefixes = (1 << 21),
+               eUnregistrationRequest_alternateGatekeeper = (1 << 20),
+               eUnregistrationRequest_genericData = (1 << 19),
+       } options;
+       UnregistrationRequest_callSignalAddress callSignalAddress;
+} UnregistrationRequest;
+
+typedef struct AdmissionRequest {      /* SEQUENCE */
+       enum {
+               eAdmissionRequest_callModel = (1 << 31),
+               eAdmissionRequest_destinationInfo = (1 << 30),
+               eAdmissionRequest_destCallSignalAddress = (1 << 29),
+               eAdmissionRequest_destExtraCallInfo = (1 << 28),
+               eAdmissionRequest_srcCallSignalAddress = (1 << 27),
+               eAdmissionRequest_nonStandardData = (1 << 26),
+               eAdmissionRequest_callServices = (1 << 25),
+               eAdmissionRequest_canMapAlias = (1 << 24),
+               eAdmissionRequest_callIdentifier = (1 << 23),
+               eAdmissionRequest_srcAlternatives = (1 << 22),
+               eAdmissionRequest_destAlternatives = (1 << 21),
+               eAdmissionRequest_gatekeeperIdentifier = (1 << 20),
+               eAdmissionRequest_tokens = (1 << 19),
+               eAdmissionRequest_cryptoTokens = (1 << 18),
+               eAdmissionRequest_integrityCheckValue = (1 << 17),
+               eAdmissionRequest_transportQOS = (1 << 16),
+               eAdmissionRequest_willSupplyUUIEs = (1 << 15),
+               eAdmissionRequest_callLinkage = (1 << 14),
+               eAdmissionRequest_gatewayDataRate = (1 << 13),
+               eAdmissionRequest_capacity = (1 << 12),
+               eAdmissionRequest_circuitInfo = (1 << 11),
+               eAdmissionRequest_desiredProtocols = (1 << 10),
+               eAdmissionRequest_desiredTunnelledProtocol = (1 << 9),
+               eAdmissionRequest_featureSet = (1 << 8),
+               eAdmissionRequest_genericData = (1 << 7),
+       } options;
+       TransportAddress destCallSignalAddress;
+       TransportAddress srcCallSignalAddress;
+} AdmissionRequest;
+
+typedef struct AdmissionConfirm {      /* SEQUENCE */
+       enum {
+               eAdmissionConfirm_irrFrequency = (1 << 31),
+               eAdmissionConfirm_nonStandardData = (1 << 30),
+               eAdmissionConfirm_destinationInfo = (1 << 29),
+               eAdmissionConfirm_destExtraCallInfo = (1 << 28),
+               eAdmissionConfirm_destinationType = (1 << 27),
+               eAdmissionConfirm_remoteExtensionAddress = (1 << 26),
+               eAdmissionConfirm_alternateEndpoints = (1 << 25),
+               eAdmissionConfirm_tokens = (1 << 24),
+               eAdmissionConfirm_cryptoTokens = (1 << 23),
+               eAdmissionConfirm_integrityCheckValue = (1 << 22),
+               eAdmissionConfirm_transportQOS = (1 << 21),
+               eAdmissionConfirm_willRespondToIRR = (1 << 20),
+               eAdmissionConfirm_uuiesRequested = (1 << 19),
+               eAdmissionConfirm_language = (1 << 18),
+               eAdmissionConfirm_alternateTransportAddresses = (1 << 17),
+               eAdmissionConfirm_useSpecifiedTransport = (1 << 16),
+               eAdmissionConfirm_circuitInfo = (1 << 15),
+               eAdmissionConfirm_usageSpec = (1 << 14),
+               eAdmissionConfirm_supportedProtocols = (1 << 13),
+               eAdmissionConfirm_serviceControl = (1 << 12),
+               eAdmissionConfirm_multipleCalls = (1 << 11),
+               eAdmissionConfirm_featureSet = (1 << 10),
+               eAdmissionConfirm_genericData = (1 << 9),
+       } options;
+       TransportAddress destCallSignalAddress;
+} AdmissionConfirm;
+
+typedef struct LocationRequest {       /* SEQUENCE */
+       enum {
+               eLocationRequest_endpointIdentifier = (1 << 31),
+               eLocationRequest_nonStandardData = (1 << 30),
+               eLocationRequest_sourceInfo = (1 << 29),
+               eLocationRequest_canMapAlias = (1 << 28),
+               eLocationRequest_gatekeeperIdentifier = (1 << 27),
+               eLocationRequest_tokens = (1 << 26),
+               eLocationRequest_cryptoTokens = (1 << 25),
+               eLocationRequest_integrityCheckValue = (1 << 24),
+               eLocationRequest_desiredProtocols = (1 << 23),
+               eLocationRequest_desiredTunnelledProtocol = (1 << 22),
+               eLocationRequest_featureSet = (1 << 21),
+               eLocationRequest_genericData = (1 << 20),
+               eLocationRequest_hopCount = (1 << 19),
+               eLocationRequest_circuitInfo = (1 << 18),
+       } options;
+       TransportAddress replyAddress;
+} LocationRequest;
+
+typedef struct LocationConfirm {       /* SEQUENCE */
+       enum {
+               eLocationConfirm_nonStandardData = (1 << 31),
+               eLocationConfirm_destinationInfo = (1 << 30),
+               eLocationConfirm_destExtraCallInfo = (1 << 29),
+               eLocationConfirm_destinationType = (1 << 28),
+               eLocationConfirm_remoteExtensionAddress = (1 << 27),
+               eLocationConfirm_alternateEndpoints = (1 << 26),
+               eLocationConfirm_tokens = (1 << 25),
+               eLocationConfirm_cryptoTokens = (1 << 24),
+               eLocationConfirm_integrityCheckValue = (1 << 23),
+               eLocationConfirm_alternateTransportAddresses = (1 << 22),
+               eLocationConfirm_supportedProtocols = (1 << 21),
+               eLocationConfirm_multipleCalls = (1 << 20),
+               eLocationConfirm_featureSet = (1 << 19),
+               eLocationConfirm_genericData = (1 << 18),
+               eLocationConfirm_circuitInfo = (1 << 17),
+               eLocationConfirm_serviceControl = (1 << 16),
+       } options;
+       TransportAddress callSignalAddress;
+       TransportAddress rasAddress;
+} LocationConfirm;
+
+typedef struct InfoRequestResponse_callSignalAddress { /* SEQUENCE OF */
+       int count;
+       TransportAddress item[10];
+} InfoRequestResponse_callSignalAddress;
+
+typedef struct InfoRequestResponse {   /* SEQUENCE */
+       enum {
+               eInfoRequestResponse_nonStandardData = (1 << 31),
+               eInfoRequestResponse_endpointAlias = (1 << 30),
+               eInfoRequestResponse_perCallInfo = (1 << 29),
+               eInfoRequestResponse_tokens = (1 << 28),
+               eInfoRequestResponse_cryptoTokens = (1 << 27),
+               eInfoRequestResponse_integrityCheckValue = (1 << 26),
+               eInfoRequestResponse_needResponse = (1 << 25),
+               eInfoRequestResponse_capacity = (1 << 24),
+               eInfoRequestResponse_irrStatus = (1 << 23),
+               eInfoRequestResponse_unsolicited = (1 << 22),
+               eInfoRequestResponse_genericData = (1 << 21),
+       } options;
+       TransportAddress rasAddress;
+       InfoRequestResponse_callSignalAddress callSignalAddress;
+} InfoRequestResponse;
+
+typedef struct RasMessage {    /* CHOICE */
+       enum {
+               eRasMessage_gatekeeperRequest,
+               eRasMessage_gatekeeperConfirm,
+               eRasMessage_gatekeeperReject,
+               eRasMessage_registrationRequest,
+               eRasMessage_registrationConfirm,
+               eRasMessage_registrationReject,
+               eRasMessage_unregistrationRequest,
+               eRasMessage_unregistrationConfirm,
+               eRasMessage_unregistrationReject,
+               eRasMessage_admissionRequest,
+               eRasMessage_admissionConfirm,
+               eRasMessage_admissionReject,
+               eRasMessage_bandwidthRequest,
+               eRasMessage_bandwidthConfirm,
+               eRasMessage_bandwidthReject,
+               eRasMessage_disengageRequest,
+               eRasMessage_disengageConfirm,
+               eRasMessage_disengageReject,
+               eRasMessage_locationRequest,
+               eRasMessage_locationConfirm,
+               eRasMessage_locationReject,
+               eRasMessage_infoRequest,
+               eRasMessage_infoRequestResponse,
+               eRasMessage_nonStandardMessage,
+               eRasMessage_unknownMessageResponse,
+               eRasMessage_requestInProgress,
+               eRasMessage_resourcesAvailableIndicate,
+               eRasMessage_resourcesAvailableConfirm,
+               eRasMessage_infoRequestAck,
+               eRasMessage_infoRequestNak,
+               eRasMessage_serviceControlIndication,
+               eRasMessage_serviceControlResponse,
+       } choice;
+       union {
+               GatekeeperRequest gatekeeperRequest;
+               GatekeeperConfirm gatekeeperConfirm;
+               RegistrationRequest registrationRequest;
+               RegistrationConfirm registrationConfirm;
+               UnregistrationRequest unregistrationRequest;
+               AdmissionRequest admissionRequest;
+               AdmissionConfirm admissionConfirm;
+               LocationRequest locationRequest;
+               LocationConfirm locationConfirm;
+               InfoRequestResponse infoRequestResponse;
+       };
+} RasMessage;
diff --git a/net/ipv4/netfilter/ip_nat_helper_h323.c b/net/ipv4/netfilter/ip_nat_helper_h323.c
new file mode 100644 (file)
index 0000000..a0bc883
--- /dev/null
@@ -0,0 +1,605 @@
+/*
+ * H.323 extension for NAT alteration.
+ *
+ * Copyright (c) 2006 Jing Min Zhao <zhaojingmin@users.sourceforge.net>
+ *
+ * This source code is licensed under General Public License version 2.
+ *
+ * Based on the 'brute force' H.323 NAT module by
+ * Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
+ *
+ * Changes:
+ *     2006-02-01 - initial version 0.1
+ *
+ *     2006-02-20 - version 0.2
+ *       1. Changed source format to follow kernel conventions
+ *       2. Deleted some unnecessary structures
+ *       3. Minor fixes
+ *
+ *     2006-03-10 - version 0.3
+ *       1. Added support for multiple TPKTs in one packet (suggested by
+ *          Patrick McHardy)
+ *       2. Added support for non-linear skb (based on Patrick McHardy's patch)
+ *       3. Eliminated unnecessary return code
+ *
+ *     2006-03-15 - version 0.4
+ *       1. Added support for T.120 channels
+ *       2. Added parameter gkrouted_only (suggested by Patrick McHardy)
+ */
+
+#include <linux/module.h>
+#include <linux/netfilter_ipv4.h>
+#include <linux/netfilter.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/moduleparam.h>
+#include <net/tcp.h>
+#include <linux/netfilter_ipv4/ip_nat.h>
+#include <linux/netfilter_ipv4/ip_nat_helper.h>
+#include <linux/netfilter_ipv4/ip_nat_rule.h>
+#include <linux/netfilter_ipv4/ip_conntrack_tuple.h>
+#include <linux/netfilter_ipv4/ip_conntrack_h323.h>
+#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+
+#include "ip_conntrack_helper_h323_asn1.h"
+
+#if 0
+#define DEBUGP printk
+#else
+#define DEBUGP(format, args...)
+#endif
+
+extern int get_h245_addr(unsigned char *data, H245_TransportAddress * addr,
+                        u_int32_t * ip, u_int16_t * port);
+extern int get_h225_addr(unsigned char *data, TransportAddress * addr,
+                        u_int32_t * ip, u_int16_t * port);
+extern void ip_conntrack_h245_expect(struct ip_conntrack *new,
+                                    struct ip_conntrack_expect *this);
+extern void ip_conntrack_q931_expect(struct ip_conntrack *new,
+                                    struct ip_conntrack_expect *this);
+extern int (*set_h245_addr_hook) (struct sk_buff ** pskb,
+                                 unsigned char **data, int dataoff,
+                                 H245_TransportAddress * addr,
+                                 u_int32_t ip, u_int16_t port);
+extern int (*set_h225_addr_hook) (struct sk_buff ** pskb,
+                                 unsigned char **data, int dataoff,
+                                 TransportAddress * addr,
+                                 u_int32_t ip, u_int16_t port);
+extern int (*set_sig_addr_hook) (struct sk_buff ** pskb,
+                                struct ip_conntrack * ct,
+                                enum ip_conntrack_info ctinfo,
+                                unsigned char **data,
+                                TransportAddress * addr, int count);
+extern int (*set_ras_addr_hook) (struct sk_buff ** pskb,
+                                struct ip_conntrack * ct,
+                                enum ip_conntrack_info ctinfo,
+                                unsigned char **data,
+                                TransportAddress * addr, int count);
+extern int (*nat_rtp_rtcp_hook) (struct sk_buff ** pskb,
+                                struct ip_conntrack * ct,
+                                enum ip_conntrack_info ctinfo,
+                                unsigned char **data, int dataoff,
+                                H245_TransportAddress * addr,
+                                u_int16_t port, u_int16_t rtp_port,
+                                struct ip_conntrack_expect * rtp_exp,
+                                struct ip_conntrack_expect * rtcp_exp);
+extern int (*nat_t120_hook) (struct sk_buff ** pskb, struct ip_conntrack * ct,
+                            enum ip_conntrack_info ctinfo,
+                            unsigned char **data, int dataoff,
+                            H245_TransportAddress * addr, u_int16_t port,
+                            struct ip_conntrack_expect * exp);
+extern int (*nat_h245_hook) (struct sk_buff ** pskb, struct ip_conntrack * ct,
+                            enum ip_conntrack_info ctinfo,
+                            unsigned char **data, int dataoff,
+                            TransportAddress * addr, u_int16_t port,
+                            struct ip_conntrack_expect * exp);
+extern int (*nat_q931_hook) (struct sk_buff ** pskb, struct ip_conntrack * ct,
+                            enum ip_conntrack_info ctinfo,
+                            unsigned char **data, TransportAddress * addr,
+                            int idx, u_int16_t port,
+                            struct ip_conntrack_expect * exp);
+
+
+/****************************************************************************/
+static int set_addr(struct sk_buff **pskb,
+                   unsigned char **data, int dataoff,
+                   unsigned int addroff, u_int32_t ip, u_int16_t port)
+{
+       enum ip_conntrack_info ctinfo;
+       struct ip_conntrack *ct = ip_conntrack_get(*pskb, &ctinfo);
+       struct {
+               u_int32_t ip;
+               u_int16_t port;
+       } __attribute__ ((__packed__)) buf;
+       struct tcphdr _tcph, *th;
+
+       buf.ip = ip;
+       buf.port = htons(port);
+       addroff += dataoff;
+
+       if ((*pskb)->nh.iph->protocol == IPPROTO_TCP) {
+               if (!ip_nat_mangle_tcp_packet(pskb, ct, ctinfo,
+                                             addroff, sizeof(buf),
+                                             (char *) &buf, sizeof(buf))) {
+                       if (net_ratelimit())
+                               printk("ip_nat_h323: ip_nat_mangle_tcp_packet"
+                                      " error\n");
+                       return -1;
+               }
+
+               /* Relocate data pointer */
+               th = skb_header_pointer(*pskb, (*pskb)->nh.iph->ihl * 4,
+                                       sizeof(_tcph), &_tcph);
+               if (th == NULL)
+                       return -1;
+               *data = (*pskb)->data + (*pskb)->nh.iph->ihl * 4 +
+                   th->doff * 4 + dataoff;
+       } else {
+               if (!ip_nat_mangle_udp_packet(pskb, ct, ctinfo,
+                                             addroff, sizeof(buf),
+                                             (char *) &buf, sizeof(buf))) {
+                       if (net_ratelimit())
+                               printk("ip_nat_h323: ip_nat_mangle_udp_packet"
+                                      " error\n");
+                       return -1;
+               }
+               /* ip_nat_mangle_udp_packet uses skb_make_writable() to copy
+                * or pull everything in a linear buffer, so we can safely
+                * use the skb pointers now */
+               *data = (*pskb)->data + (*pskb)->nh.iph->ihl * 4 +
+                   sizeof(struct udphdr);
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int set_h225_addr(struct sk_buff **pskb,
+                        unsigned char **data, int dataoff,
+                        TransportAddress * addr,
+                        u_int32_t ip, u_int16_t port)
+{
+       return set_addr(pskb, data, dataoff, addr->ipAddress.ip, ip, port);
+}
+
+/****************************************************************************/
+static int set_h245_addr(struct sk_buff **pskb,
+                        unsigned char **data, int dataoff,
+                        H245_TransportAddress * addr,
+                        u_int32_t ip, u_int16_t port)
+{
+       return set_addr(pskb, data, dataoff,
+                       addr->unicastAddress.iPAddress.network, ip, port);
+}
+
+/****************************************************************************/
+static int set_sig_addr(struct sk_buff **pskb, struct ip_conntrack *ct,
+                       enum ip_conntrack_info ctinfo,
+                       unsigned char **data,
+                       TransportAddress * addr, int count)
+{
+       struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+       int dir = CTINFO2DIR(ctinfo);
+       int i;
+       u_int32_t ip;
+       u_int16_t port;
+
+       for (i = 0; i < count; i++) {
+               if (get_h225_addr(*data, &addr[i], &ip, &port)) {
+                       if (ip == ct->tuplehash[dir].tuple.src.ip &&
+                           port == info->sig_port[dir]) {
+                               /* GW->GK */
+
+                               /* Fix for Gnomemeeting */
+                               if (i > 0 &&
+                                   get_h225_addr(*data, &addr[0],
+                                                 &ip, &port) &&
+                                   (ntohl(ip) & 0xff000000) == 0x7f000000)
+                                       i = 0;
+
+                               DEBUGP
+                                   ("ip_nat_ras: set signal address "
+                                    "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+                                    NIPQUAD(ip), port,
+                                    NIPQUAD(ct->tuplehash[!dir].tuple.dst.
+                                            ip), info->sig_port[!dir]);
+                               return set_h225_addr(pskb, data, 0, &addr[i],
+                                                    ct->tuplehash[!dir].
+                                                    tuple.dst.ip,
+                                                    info->sig_port[!dir]);
+                       } else if (ip == ct->tuplehash[dir].tuple.dst.ip &&
+                                  port == info->sig_port[dir]) {
+                               /* GK->GW */
+                               DEBUGP
+                                   ("ip_nat_ras: set signal address "
+                                    "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+                                    NIPQUAD(ip), port,
+                                    NIPQUAD(ct->tuplehash[!dir].tuple.src.
+                                            ip), info->sig_port[!dir]);
+                               return set_h225_addr(pskb, data, 0, &addr[i],
+                                                    ct->tuplehash[!dir].
+                                                    tuple.src.ip,
+                                                    info->sig_port[!dir]);
+                       }
+               }
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int set_ras_addr(struct sk_buff **pskb, struct ip_conntrack *ct,
+                       enum ip_conntrack_info ctinfo,
+                       unsigned char **data,
+                       TransportAddress * addr, int count)
+{
+       int dir = CTINFO2DIR(ctinfo);
+       int i;
+       u_int32_t ip;
+       u_int16_t port;
+
+       for (i = 0; i < count; i++) {
+               if (get_h225_addr(*data, &addr[i], &ip, &port) &&
+                   ip == ct->tuplehash[dir].tuple.src.ip &&
+                   port == ntohs(ct->tuplehash[dir].tuple.src.u.udp.port)) {
+                       DEBUGP("ip_nat_ras: set rasAddress "
+                              "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+                              NIPQUAD(ip), port,
+                              NIPQUAD(ct->tuplehash[!dir].tuple.dst.ip),
+                              ntohs(ct->tuplehash[!dir].tuple.dst.u.udp.
+                                    port));
+                       return set_h225_addr(pskb, data, 0, &addr[i],
+                                            ct->tuplehash[!dir].tuple.dst.ip,
+                                            ntohs(ct->tuplehash[!dir].tuple.
+                                                  dst.u.udp.port));
+               }
+       }
+
+       return 0;
+}
+
+/****************************************************************************/
+static int nat_rtp_rtcp(struct sk_buff **pskb, struct ip_conntrack *ct,
+                       enum ip_conntrack_info ctinfo,
+                       unsigned char **data, int dataoff,
+                       H245_TransportAddress * addr,
+                       u_int16_t port, u_int16_t rtp_port,
+                       struct ip_conntrack_expect *rtp_exp,
+                       struct ip_conntrack_expect *rtcp_exp)
+{
+       struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+       int dir = CTINFO2DIR(ctinfo);
+       int i;
+       u_int16_t nated_port;
+
+       /* Set expectations for NAT */
+       rtp_exp->saved_proto.udp.port = rtp_exp->tuple.dst.u.udp.port;
+       rtp_exp->expectfn = ip_nat_follow_master;
+       rtp_exp->dir = !dir;
+       rtcp_exp->saved_proto.udp.port = rtcp_exp->tuple.dst.u.udp.port;
+       rtcp_exp->expectfn = ip_nat_follow_master;
+       rtcp_exp->dir = !dir;
+
+       /* Lookup existing expects */
+       for (i = 0; i < H323_RTP_CHANNEL_MAX; i++) {
+               if (info->rtp_port[i][dir] == rtp_port) {
+                       /* Expected */
+
+                       /* Use allocated ports first. This will refresh
+                        * the expects */
+                       rtp_exp->tuple.dst.u.udp.port =
+                           htons(info->rtp_port[i][dir]);
+                       rtcp_exp->tuple.dst.u.udp.port =
+                           htons(info->rtp_port[i][dir] + 1);
+                       break;
+               } else if (info->rtp_port[i][dir] == 0) {
+                       /* Not expected */
+                       break;
+               }
+       }
+
+       /* Run out of expectations */
+       if (i >= H323_RTP_CHANNEL_MAX) {
+               if (net_ratelimit())
+                       printk("ip_nat_h323: out of expectations\n");
+               return 0;
+       }
+
+       /* Try to get a pair of ports. */
+       for (nated_port = ntohs(rtp_exp->tuple.dst.u.udp.port);
+            nated_port != 0; nated_port += 2) {
+               rtp_exp->tuple.dst.u.udp.port = htons(nated_port);
+               if (ip_conntrack_expect_related(rtp_exp) == 0) {
+                       rtcp_exp->tuple.dst.u.udp.port =
+                           htons(nated_port + 1);
+                       if (ip_conntrack_expect_related(rtcp_exp) == 0)
+                               break;
+                       ip_conntrack_unexpect_related(rtp_exp);
+               }
+       }
+
+       if (nated_port == 0) {  /* No port available */
+               if (net_ratelimit())
+                       printk("ip_nat_h323: out of RTP ports\n");
+               return 0;
+       }
+
+       /* Modify signal */
+       if (set_h245_addr(pskb, data, dataoff, addr,
+                         ct->tuplehash[!dir].tuple.dst.ip,
+                         (port & 1) ? nated_port + 1 : nated_port) == 0) {
+               /* Save ports */
+               info->rtp_port[i][dir] = rtp_port;
+               info->rtp_port[i][!dir] = nated_port;
+       } else {
+               ip_conntrack_unexpect_related(rtp_exp);
+               ip_conntrack_unexpect_related(rtcp_exp);
+               return -1;
+       }
+
+       /* Success */
+       DEBUGP("ip_nat_h323: expect RTP %u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+              NIPQUAD(rtp_exp->tuple.src.ip),
+              ntohs(rtp_exp->tuple.src.u.udp.port),
+              NIPQUAD(rtp_exp->tuple.dst.ip),
+              ntohs(rtp_exp->tuple.dst.u.udp.port));
+       DEBUGP("ip_nat_h323: expect RTCP %u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+              NIPQUAD(rtcp_exp->tuple.src.ip),
+              ntohs(rtcp_exp->tuple.src.u.udp.port),
+              NIPQUAD(rtcp_exp->tuple.dst.ip),
+              ntohs(rtcp_exp->tuple.dst.u.udp.port));
+
+       return 0;
+}
+
+/****************************************************************************/
+static int nat_t120(struct sk_buff **pskb, struct ip_conntrack *ct,
+                   enum ip_conntrack_info ctinfo,
+                   unsigned char **data, int dataoff,
+                   H245_TransportAddress * addr, u_int16_t port,
+                   struct ip_conntrack_expect *exp)
+{
+       int dir = CTINFO2DIR(ctinfo);
+       u_int16_t nated_port = port;
+
+       /* Set expectations for NAT */
+       exp->saved_proto.tcp.port = exp->tuple.dst.u.tcp.port;
+       exp->expectfn = ip_nat_follow_master;
+       exp->dir = !dir;
+
+       /* Try to get same port: if not, try to change it. */
+       for (; nated_port != 0; nated_port++) {
+               exp->tuple.dst.u.tcp.port = htons(nated_port);
+               if (ip_conntrack_expect_related(exp) == 0)
+                       break;
+       }
+
+       if (nated_port == 0) {  /* No port available */
+               if (net_ratelimit())
+                       printk("ip_nat_h323: out of TCP ports\n");
+               return 0;
+       }
+
+       /* Modify signal */
+       if (set_h245_addr(pskb, data, dataoff, addr,
+                         ct->tuplehash[!dir].tuple.dst.ip, nated_port) < 0) {
+               ip_conntrack_unexpect_related(exp);
+               return -1;
+       }
+
+       DEBUGP("ip_nat_h323: expect T.120 %u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+              NIPQUAD(exp->tuple.src.ip), ntohs(exp->tuple.src.u.tcp.port),
+              NIPQUAD(exp->tuple.dst.ip), ntohs(exp->tuple.dst.u.tcp.port));
+
+       return 0;
+}
+
+/****************************************************************************
+ * This conntrack expect function replaces ip_conntrack_h245_expect()
+ * which was set by ip_conntrack_helper_h323.c. It calls both
+ * ip_nat_follow_master() and ip_conntrack_h245_expect()
+ ****************************************************************************/
+static void ip_nat_h245_expect(struct ip_conntrack *new,
+                              struct ip_conntrack_expect *this)
+{
+       ip_nat_follow_master(new, this);
+       ip_conntrack_h245_expect(new, this);
+}
+
+/****************************************************************************/
+static int nat_h245(struct sk_buff **pskb, struct ip_conntrack *ct,
+                   enum ip_conntrack_info ctinfo,
+                   unsigned char **data, int dataoff,
+                   TransportAddress * addr, u_int16_t port,
+                   struct ip_conntrack_expect *exp)
+{
+       struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+       int dir = CTINFO2DIR(ctinfo);
+       u_int16_t nated_port = port;
+
+       /* Set expectations for NAT */
+       exp->saved_proto.tcp.port = exp->tuple.dst.u.tcp.port;
+       exp->expectfn = ip_nat_h245_expect;
+       exp->dir = !dir;
+
+       /* Check existing expects */
+       if (info->sig_port[dir] == port)
+               nated_port = info->sig_port[!dir];
+
+       /* Try to get same port: if not, try to change it. */
+       for (; nated_port != 0; nated_port++) {
+               exp->tuple.dst.u.tcp.port = htons(nated_port);
+               if (ip_conntrack_expect_related(exp) == 0)
+                       break;
+       }
+
+       if (nated_port == 0) {  /* No port available */
+               if (net_ratelimit())
+                       printk("ip_nat_q931: out of TCP ports\n");
+               return 0;
+       }
+
+       /* Modify signal */
+       if (set_h225_addr(pskb, data, dataoff, addr,
+                         ct->tuplehash[!dir].tuple.dst.ip,
+                         nated_port) == 0) {
+               /* Save ports */
+               info->sig_port[dir] = port;
+               info->sig_port[!dir] = nated_port;
+       } else {
+               ip_conntrack_unexpect_related(exp);
+               return -1;
+       }
+
+       DEBUGP("ip_nat_q931: expect H.245 %u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+              NIPQUAD(exp->tuple.src.ip), ntohs(exp->tuple.src.u.tcp.port),
+              NIPQUAD(exp->tuple.dst.ip), ntohs(exp->tuple.dst.u.tcp.port));
+
+       return 0;
+}
+
+/****************************************************************************
+ * This conntrack expect function replaces ip_conntrack_q931_expect()
+ * which was set by ip_conntrack_helper_h323.c.
+ ****************************************************************************/
+static void ip_nat_q931_expect(struct ip_conntrack *new,
+                              struct ip_conntrack_expect *this)
+{
+       struct ip_nat_range range;
+
+       if (this->tuple.src.ip != 0) {  /* Only accept calls from GK */
+               ip_nat_follow_master(new, this);
+               goto out;
+       }
+
+       /* This must be a fresh one. */
+       BUG_ON(new->status & IPS_NAT_DONE_MASK);
+
+       /* Change src to where master sends to */
+       range.flags = IP_NAT_RANGE_MAP_IPS;
+       range.min_ip = range.max_ip = new->tuplehash[!this->dir].tuple.src.ip;
+
+       /* hook doesn't matter, but it has to do source manip */
+       ip_nat_setup_info(new, &range, NF_IP_POST_ROUTING);
+
+       /* For DST manip, map port here to where it's expected. */
+       range.flags = (IP_NAT_RANGE_MAP_IPS | IP_NAT_RANGE_PROTO_SPECIFIED);
+       range.min = range.max = this->saved_proto;
+       range.min_ip = range.max_ip =
+           new->master->tuplehash[!this->dir].tuple.src.ip;
+
+       /* hook doesn't matter, but it has to do destination manip */
+       ip_nat_setup_info(new, &range, NF_IP_PRE_ROUTING);
+
+      out:
+       ip_conntrack_q931_expect(new, this);
+}
+
+/****************************************************************************/
+static int nat_q931(struct sk_buff **pskb, struct ip_conntrack *ct,
+                   enum ip_conntrack_info ctinfo,
+                   unsigned char **data, TransportAddress * addr, int idx,
+                   u_int16_t port, struct ip_conntrack_expect *exp)
+{
+       struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+       int dir = CTINFO2DIR(ctinfo);
+       u_int16_t nated_port = port;
+       u_int32_t ip;
+
+       /* Set expectations for NAT */
+       exp->saved_proto.tcp.port = exp->tuple.dst.u.tcp.port;
+       exp->expectfn = ip_nat_q931_expect;
+       exp->dir = !dir;
+
+       /* Check existing expects */
+       if (info->sig_port[dir] == port)
+               nated_port = info->sig_port[!dir];
+
+       /* Try to get same port: if not, try to change it. */
+       for (; nated_port != 0; nated_port++) {
+               exp->tuple.dst.u.tcp.port = htons(nated_port);
+               if (ip_conntrack_expect_related(exp) == 0)
+                       break;
+       }
+
+       if (nated_port == 0) {  /* No port available */
+               if (net_ratelimit())
+                       printk("ip_nat_ras: out of TCP ports\n");
+               return 0;
+       }
+
+       /* Modify signal */
+       if (set_h225_addr(pskb, data, 0, &addr[idx],
+                         ct->tuplehash[!dir].tuple.dst.ip,
+                         nated_port) == 0) {
+               /* Save ports */
+               info->sig_port[dir] = port;
+               info->sig_port[!dir] = nated_port;
+
+               /* Fix for Gnomemeeting */
+               if (idx > 0 &&
+                   get_h225_addr(*data, &addr[0], &ip, &port) &&
+                   (ntohl(ip) & 0xff000000) == 0x7f000000) {
+                       set_h225_addr_hook(pskb, data, 0, &addr[0],
+                                          ct->tuplehash[!dir].tuple.dst.ip,
+                                          info->sig_port[!dir]);
+               }
+       } else {
+               ip_conntrack_unexpect_related(exp);
+               return -1;
+       }
+
+       /* Success */
+       DEBUGP("ip_nat_ras: expect Q.931 %u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+              NIPQUAD(exp->tuple.src.ip), ntohs(exp->tuple.src.u.tcp.port),
+              NIPQUAD(exp->tuple.dst.ip), ntohs(exp->tuple.dst.u.tcp.port));
+
+       return 0;
+}
+
+/****************************************************************************/
+static int __init init(void)
+{
+       BUG_ON(set_h245_addr_hook != NULL);
+       BUG_ON(set_h225_addr_hook != NULL);
+       BUG_ON(set_sig_addr_hook != NULL);
+       BUG_ON(set_ras_addr_hook != NULL);
+       BUG_ON(nat_rtp_rtcp_hook != NULL);
+       BUG_ON(nat_t120_hook != NULL);
+       BUG_ON(nat_h245_hook != NULL);
+       BUG_ON(nat_q931_hook != NULL);
+
+       set_h245_addr_hook = set_h245_addr;
+       set_h225_addr_hook = set_h225_addr;
+       set_sig_addr_hook = set_sig_addr;
+       set_ras_addr_hook = set_ras_addr;
+       nat_rtp_rtcp_hook = nat_rtp_rtcp;
+       nat_t120_hook = nat_t120;
+       nat_h245_hook = nat_h245;
+       nat_q931_hook = nat_q931;
+
+       DEBUGP("ip_nat_h323: init success\n");
+       return 0;
+}
+
+/****************************************************************************/
+static void __exit fini(void)
+{
+       set_h245_addr_hook = NULL;
+       set_h225_addr_hook = NULL;
+       set_sig_addr_hook = NULL;
+       set_ras_addr_hook = NULL;
+       nat_rtp_rtcp_hook = NULL;
+       nat_t120_hook = NULL;
+       nat_h245_hook = NULL;
+       nat_q931_hook = NULL;
+       synchronize_net();
+}
+
+/****************************************************************************/
+module_init(init);
+module_exit(fini);
+
+MODULE_AUTHOR("Jing Min Zhao <zhaojingmin@users.sourceforge.net>");
+MODULE_DESCRIPTION("H.323 NAT helper");
+MODULE_LICENSE("GPL");