3 * Linux INET6 implementation
6 * Pedro Roque <roque@di.fc.ul.pt>
8 * Based on linux/ipv4/udp.c
10 * $Id: udp.c,v 1.65 2002/02/01 22:01:04 davem Exp $
13 * Hideaki YOSHIFUJI : sin6_scope_id support
14 * YOSHIFUJI Hideaki @USAGI and: Support IPV6_V6ONLY socket option, which
15 * Alexey Kuznetsov allow both IPv4 and IPv6 sockets to bind
16 * a single port at the same time.
17 * Kazunori MIYAZAWA @USAGI: change process style to use ip6_append_data
18 * YOSHIFUJI Hideaki @USAGI: convert /proc/net/udp6 to seq_file.
20 * This program is free software; you can redistribute it and/or
21 * modify it under the terms of the GNU General Public License
22 * as published by the Free Software Foundation; either version
23 * 2 of the License, or (at your option) any later version.
26 #include <linux/errno.h>
27 #include <linux/types.h>
28 #include <linux/socket.h>
29 #include <linux/sockios.h>
30 #include <linux/net.h>
31 #include <linux/in6.h>
32 #include <linux/netdevice.h>
33 #include <linux/if_arp.h>
34 #include <linux/ipv6.h>
35 #include <linux/icmpv6.h>
36 #include <linux/init.h>
37 #include <linux/skbuff.h>
38 #include <asm/uaccess.h>
40 #include <net/ndisc.h>
41 #include <net/protocol.h>
42 #include <net/transp_v6.h>
43 #include <net/ip6_route.h>
45 #include <net/tcp_states.h>
46 #include <net/ip6_checksum.h>
49 #include <linux/proc_fs.h>
50 #include <linux/seq_file.h>
53 DEFINE_SNMP_STAT(struct udp_mib, udp_stats_in6) __read_mostly;
55 static inline int udp_v6_get_port(struct sock *sk, unsigned short snum)
57 return udp_get_port(sk, snum, ipv6_rcv_saddr_equal);
60 static struct sock *__udp6_lib_lookup(struct in6_addr *saddr, __be16 sport,
61 struct in6_addr *daddr, __be16 dport,
62 int dif, struct hlist_head udptable[])
64 struct sock *sk, *result = NULL;
65 struct hlist_node *node;
66 unsigned short hnum = ntohs(dport);
69 read_lock(&udp_hash_lock);
70 sk_for_each(sk, node, &udptable[hnum & (UDP_HTABLE_SIZE - 1)]) {
71 struct inet_sock *inet = inet_sk(sk);
73 if (sk->sk_hash == hnum && sk->sk_family == PF_INET6) {
74 struct ipv6_pinfo *np = inet6_sk(sk);
77 if (inet->dport != sport)
81 if (!ipv6_addr_any(&np->rcv_saddr)) {
82 if (!ipv6_addr_equal(&np->rcv_saddr, daddr))
86 if (!ipv6_addr_any(&np->daddr)) {
87 if (!ipv6_addr_equal(&np->daddr, saddr))
91 if (sk->sk_bound_dev_if) {
92 if (sk->sk_bound_dev_if != dif)
99 } else if(score > badness) {
107 read_unlock(&udp_hash_lock);
112 * This should be easy, if there is something there we
113 * return it, otherwise we block.
116 int udpv6_recvmsg(struct kiocb *iocb, struct sock *sk,
117 struct msghdr *msg, size_t len,
118 int noblock, int flags, int *addr_len)
120 struct ipv6_pinfo *np = inet6_sk(sk);
121 struct inet_sock *inet = inet_sk(sk);
124 int err, copy_only, is_udplite = IS_UDPLITE(sk);
127 *addr_len=sizeof(struct sockaddr_in6);
129 if (flags & MSG_ERRQUEUE)
130 return ipv6_recv_error(sk, msg, len);
133 skb = skb_recv_datagram(sk, flags, noblock, &err);
137 copied = skb->len - sizeof(struct udphdr);
140 msg->msg_flags |= MSG_TRUNC;
144 * Decide whether to checksum and/or copy data.
146 copy_only = (skb->ip_summed==CHECKSUM_UNNECESSARY);
148 if (is_udplite || (!copy_only && msg->msg_flags&MSG_TRUNC)) {
149 if (__udp_lib_checksum_complete(skb))
155 err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr),
156 msg->msg_iov, copied );
158 err = skb_copy_and_csum_datagram_iovec(skb, sizeof(struct udphdr), msg->msg_iov);
165 sock_recv_timestamp(msg, sk, skb);
167 /* Copy the address. */
169 struct sockaddr_in6 *sin6;
171 sin6 = (struct sockaddr_in6 *) msg->msg_name;
172 sin6->sin6_family = AF_INET6;
173 sin6->sin6_port = skb->h.uh->source;
174 sin6->sin6_flowinfo = 0;
175 sin6->sin6_scope_id = 0;
177 if (skb->protocol == htons(ETH_P_IP))
178 ipv6_addr_set(&sin6->sin6_addr, 0, 0,
179 htonl(0xffff), skb->nh.iph->saddr);
181 ipv6_addr_copy(&sin6->sin6_addr, &skb->nh.ipv6h->saddr);
182 if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
183 sin6->sin6_scope_id = IP6CB(skb)->iif;
187 if (skb->protocol == htons(ETH_P_IP)) {
188 if (inet->cmsg_flags)
189 ip_cmsg_recv(msg, skb);
192 datagram_recv_ctl(sk, msg, skb);
196 if (flags & MSG_TRUNC)
197 err = skb->len - sizeof(struct udphdr);
200 skb_free_datagram(sk, skb);
205 skb_kill_datagram(sk, skb, flags);
207 if (flags & MSG_DONTWAIT) {
208 UDP6_INC_STATS_USER(UDP_MIB_INERRORS, is_udplite);
214 void __udp6_lib_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
215 int type, int code, int offset, __be32 info,
216 struct hlist_head udptable[] )
218 struct ipv6_pinfo *np;
219 struct ipv6hdr *hdr = (struct ipv6hdr*)skb->data;
220 struct in6_addr *saddr = &hdr->saddr;
221 struct in6_addr *daddr = &hdr->daddr;
222 struct udphdr *uh = (struct udphdr*)(skb->data+offset);
226 sk = __udp6_lib_lookup(daddr, uh->dest,
227 saddr, uh->source, inet6_iif(skb), udptable);
233 if (!icmpv6_err_convert(type, code, &err) && !np->recverr)
236 if (sk->sk_state != TCP_ESTABLISHED && !np->recverr)
240 ipv6_icmp_error(sk, skb, err, uh->dest, ntohl(info), (u8 *)(uh+1));
243 sk->sk_error_report(sk);
248 static __inline__ void udpv6_err(struct sk_buff *skb,
249 struct inet6_skb_parm *opt, int type,
250 int code, int offset, __be32 info )
252 return __udp6_lib_err(skb, opt, type, code, offset, info, udp_hash);
255 int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
257 struct udp_sock *up = udp_sk(sk);
260 if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
264 * UDP-Lite specific tests, ignored on UDP sockets (see net/ipv4/udp.c).
266 if ((up->pcflag & UDPLITE_RECV_CC) && UDP_SKB_CB(skb)->partial_cov) {
268 if (up->pcrlen == 0) { /* full coverage was set */
269 LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: partial coverage"
270 " %d while full coverage %d requested\n",
271 UDP_SKB_CB(skb)->cscov, skb->len);
274 if (UDP_SKB_CB(skb)->cscov < up->pcrlen) {
275 LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: coverage %d "
276 "too small, need min %d\n",
277 UDP_SKB_CB(skb)->cscov, up->pcrlen);
283 if (udp_lib_checksum_complete(skb))
287 if ((rc = sock_queue_rcv_skb(sk,skb)) < 0) {
288 /* Note that an ENOMEM error is charged twice */
290 UDP6_INC_STATS_BH(UDP_MIB_RCVBUFERRORS, up->pcflag);
293 UDP6_INC_STATS_BH(UDP_MIB_INDATAGRAMS, up->pcflag);
296 UDP6_INC_STATS_BH(UDP_MIB_INERRORS, up->pcflag);
301 static struct sock *udp_v6_mcast_next(struct sock *sk,
302 __be16 loc_port, struct in6_addr *loc_addr,
303 __be16 rmt_port, struct in6_addr *rmt_addr,
306 struct hlist_node *node;
308 unsigned short num = ntohs(loc_port);
310 sk_for_each_from(s, node) {
311 struct inet_sock *inet = inet_sk(s);
313 if (s->sk_hash == num && s->sk_family == PF_INET6) {
314 struct ipv6_pinfo *np = inet6_sk(s);
316 if (inet->dport != rmt_port)
319 if (!ipv6_addr_any(&np->daddr) &&
320 !ipv6_addr_equal(&np->daddr, rmt_addr))
323 if (s->sk_bound_dev_if && s->sk_bound_dev_if != dif)
326 if (!ipv6_addr_any(&np->rcv_saddr)) {
327 if (!ipv6_addr_equal(&np->rcv_saddr, loc_addr))
330 if(!inet6_mc_check(s, loc_addr, rmt_addr))
339 * Note: called only from the BH handler context,
340 * so we don't need to lock the hashes.
342 static int __udp6_lib_mcast_deliver(struct sk_buff *skb, struct in6_addr *saddr,
343 struct in6_addr *daddr, struct hlist_head udptable[])
345 struct sock *sk, *sk2;
346 const struct udphdr *uh = skb->h.uh;
349 read_lock(&udp_hash_lock);
350 sk = sk_head(&udptable[ntohs(uh->dest) & (UDP_HTABLE_SIZE - 1)]);
351 dif = inet6_iif(skb);
352 sk = udp_v6_mcast_next(sk, uh->dest, daddr, uh->source, saddr, dif);
359 while ((sk2 = udp_v6_mcast_next(sk_next(sk2), uh->dest, daddr,
360 uh->source, saddr, dif))) {
361 struct sk_buff *buff = skb_clone(skb, GFP_ATOMIC);
363 udpv6_queue_rcv_skb(sk2, buff);
365 udpv6_queue_rcv_skb(sk, skb);
367 read_unlock(&udp_hash_lock);
371 static inline int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh)
374 if (uh->check == 0) {
375 /* RFC 2460 section 8.1 says that we SHOULD log
376 this error. Well, it is reasonable.
378 LIMIT_NETDEBUG(KERN_INFO "IPv6: udp checksum is 0\n");
381 if (skb->ip_summed == CHECKSUM_COMPLETE &&
382 !csum_ipv6_magic(&skb->nh.ipv6h->saddr, &skb->nh.ipv6h->daddr,
383 skb->len, IPPROTO_UDP, skb->csum ))
384 skb->ip_summed = CHECKSUM_UNNECESSARY;
386 if (skb->ip_summed != CHECKSUM_UNNECESSARY)
387 skb->csum = ~csum_unfold(csum_ipv6_magic(&skb->nh.ipv6h->saddr,
388 &skb->nh.ipv6h->daddr,
389 skb->len, IPPROTO_UDP,
392 return (UDP_SKB_CB(skb)->partial_cov = 0);
395 int __udp6_lib_rcv(struct sk_buff **pskb, struct hlist_head udptable[],
398 struct sk_buff *skb = *pskb;
401 struct net_device *dev = skb->dev;
402 struct in6_addr *saddr, *daddr;
405 if (!pskb_may_pull(skb, sizeof(struct udphdr)))
408 saddr = &skb->nh.ipv6h->saddr;
409 daddr = &skb->nh.ipv6h->daddr;
412 ulen = ntohs(uh->len);
416 if(! is_udplite ) { /* UDP validates ulen. */
418 /* Check for jumbo payload */
422 if (ulen < sizeof(*uh))
425 if (ulen < skb->len) {
426 if (pskb_trim_rcsum(skb, ulen))
428 saddr = &skb->nh.ipv6h->saddr;
429 daddr = &skb->nh.ipv6h->daddr;
433 if (udp6_csum_init(skb, uh))
436 } else { /* UDP-Lite validates cscov. */
437 if (udplite6_csum_init(skb, uh))
442 * Multicast receive code
444 if (ipv6_addr_is_multicast(daddr))
445 return __udp6_lib_mcast_deliver(skb, saddr, daddr, udptable);
450 * check socket cache ... must talk to Alan about his plans
451 * for sock caches... i'll skip this for now.
453 sk = __udp6_lib_lookup(saddr, uh->source,
454 daddr, uh->dest, inet6_iif(skb), udptable);
457 if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
460 if (udp_lib_checksum_complete(skb))
462 UDP6_INC_STATS_BH(UDP_MIB_NOPORTS, is_udplite);
464 icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_PORT_UNREACH, 0, dev);
472 udpv6_queue_rcv_skb(sk, skb);
477 LIMIT_NETDEBUG(KERN_DEBUG "UDP%sv6: short packet: %d/%u\n",
478 is_udplite? "-Lite" : "", ulen, skb->len);
481 UDP6_INC_STATS_BH(UDP_MIB_INERRORS, is_udplite);
486 static __inline__ int udpv6_rcv(struct sk_buff **pskb)
488 return __udp6_lib_rcv(pskb, udp_hash, 0);
492 * Throw away all pending data and cancel the corking. Socket is locked.
494 static void udp_v6_flush_pending_frames(struct sock *sk)
496 struct udp_sock *up = udp_sk(sk);
501 ip6_flush_pending_frames(sk);
509 static int udp_v6_push_pending_frames(struct sock *sk)
513 struct udp_sock *up = udp_sk(sk);
514 struct inet_sock *inet = inet_sk(sk);
515 struct flowi *fl = &inet->cork.fl;
519 /* Grab the skbuff where UDP header space exists. */
520 if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
524 * Create a UDP header
527 uh->source = fl->fl_ip_sport;
528 uh->dest = fl->fl_ip_dport;
529 uh->len = htons(up->len);
533 csum = udplite_csum_outgoing(sk, skb);
535 csum = udp_csum_outgoing(sk, skb);
537 /* add protocol-dependent pseudo-header */
538 uh->check = csum_ipv6_magic(&fl->fl6_src, &fl->fl6_dst,
539 up->len, fl->proto, csum );
541 uh->check = CSUM_MANGLED_0;
543 err = ip6_push_pending_frames(sk);
550 int udpv6_sendmsg(struct kiocb *iocb, struct sock *sk,
551 struct msghdr *msg, size_t len)
553 struct ipv6_txoptions opt_space;
554 struct udp_sock *up = udp_sk(sk);
555 struct inet_sock *inet = inet_sk(sk);
556 struct ipv6_pinfo *np = inet6_sk(sk);
557 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) msg->msg_name;
558 struct in6_addr *daddr, *final_p = NULL, final;
559 struct ipv6_txoptions *opt = NULL;
560 struct ip6_flowlabel *flowlabel = NULL;
562 struct dst_entry *dst;
563 int addr_len = msg->msg_namelen;
567 int corkreq = up->corkflag || msg->msg_flags&MSG_MORE;
570 int is_udplite = up->pcflag;
571 int (*getfrag)(void *, char *, int, int, int, struct sk_buff *);
573 /* destination address check */
575 if (addr_len < offsetof(struct sockaddr, sa_data))
578 switch (sin6->sin6_family) {
580 if (addr_len < SIN6_LEN_RFC2133)
582 daddr = &sin6->sin6_addr;
587 msg->msg_name = sin6 = NULL;
588 msg->msg_namelen = addr_len = 0;
594 } else if (!up->pending) {
595 if (sk->sk_state != TCP_ESTABLISHED)
596 return -EDESTADDRREQ;
602 if (ipv6_addr_type(daddr) == IPV6_ADDR_MAPPED) {
603 struct sockaddr_in sin;
604 sin.sin_family = AF_INET;
605 sin.sin_port = sin6 ? sin6->sin6_port : inet->dport;
606 sin.sin_addr.s_addr = daddr->s6_addr32[3];
607 msg->msg_name = &sin;
608 msg->msg_namelen = sizeof(sin);
610 if (__ipv6_only_sock(sk))
612 return udp_sendmsg(iocb, sk, msg, len);
616 if (up->pending == AF_INET)
617 return udp_sendmsg(iocb, sk, msg, len);
619 /* Rough check on arithmetic overflow,
620 better check is made in ip6_append_data().
622 if (len > INT_MAX - sizeof(struct udphdr))
627 * There are pending frames.
628 * The socket lock must be held while it's corked.
631 if (likely(up->pending)) {
632 if (unlikely(up->pending != AF_INET6)) {
634 return -EAFNOSUPPORT;
641 ulen += sizeof(struct udphdr);
643 memset(&fl, 0, sizeof(fl));
646 if (sin6->sin6_port == 0)
649 fl.fl_ip_dport = sin6->sin6_port;
650 daddr = &sin6->sin6_addr;
653 fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
654 if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) {
655 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
656 if (flowlabel == NULL)
658 daddr = &flowlabel->dst;
663 * Otherwise it will be difficult to maintain
666 if (sk->sk_state == TCP_ESTABLISHED &&
667 ipv6_addr_equal(daddr, &np->daddr))
670 if (addr_len >= sizeof(struct sockaddr_in6) &&
671 sin6->sin6_scope_id &&
672 ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
673 fl.oif = sin6->sin6_scope_id;
675 if (sk->sk_state != TCP_ESTABLISHED)
676 return -EDESTADDRREQ;
678 fl.fl_ip_dport = inet->dport;
680 fl.fl6_flowlabel = np->flow_label;
685 fl.oif = sk->sk_bound_dev_if;
687 if (msg->msg_controllen) {
689 memset(opt, 0, sizeof(struct ipv6_txoptions));
690 opt->tot_len = sizeof(*opt);
692 err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass);
694 fl6_sock_release(flowlabel);
697 if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
698 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
699 if (flowlabel == NULL)
702 if (!(opt->opt_nflen|opt->opt_flen))
709 opt = fl6_merge_options(&opt_space, flowlabel, opt);
710 opt = ipv6_fixup_options(&opt_space, opt);
712 fl.proto = sk->sk_protocol;
713 ipv6_addr_copy(&fl.fl6_dst, daddr);
714 if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
715 ipv6_addr_copy(&fl.fl6_src, &np->saddr);
716 fl.fl_ip_sport = inet->sport;
718 /* merge ip6_build_xmit from ip6_output */
719 if (opt && opt->srcrt) {
720 struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
721 ipv6_addr_copy(&final, &fl.fl6_dst);
722 ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
727 if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst)) {
728 fl.oif = np->mcast_oif;
732 security_sk_classify_flow(sk, &fl);
734 err = ip6_sk_dst_lookup(sk, &dst, &fl);
738 ipv6_addr_copy(&fl.fl6_dst, final_p);
740 if ((err = xfrm_lookup(&dst, &fl, sk, 1)) < 0)
744 if (ipv6_addr_is_multicast(&fl.fl6_dst))
745 hlimit = np->mcast_hops;
747 hlimit = np->hop_limit;
749 hlimit = dst_metric(dst, RTAX_HOPLIMIT);
751 hlimit = ipv6_get_hoplimit(dst->dev);
760 if (msg->msg_flags&MSG_CONFIRM)
765 if (unlikely(up->pending)) {
766 /* The socket is already corked while preparing it. */
767 /* ... which is an evident application bug. --ANK */
770 LIMIT_NETDEBUG(KERN_DEBUG "udp cork app bug 2\n");
775 up->pending = AF_INET6;
779 getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag;
780 err = ip6_append_data(sk, getfrag, msg->msg_iov, ulen,
781 sizeof(struct udphdr), hlimit, tclass, opt, &fl,
782 (struct rt6_info*)dst,
783 corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags);
785 udp_v6_flush_pending_frames(sk);
787 err = udp_v6_push_pending_frames(sk);
788 else if (unlikely(skb_queue_empty(&sk->sk_write_queue)))
793 ip6_dst_store(sk, dst,
794 ipv6_addr_equal(&fl.fl6_dst, &np->daddr) ?
796 #ifdef CONFIG_IPV6_SUBTREES
797 ipv6_addr_equal(&fl.fl6_src, &np->saddr) ?
807 err = np->recverr ? net_xmit_errno(err) : 0;
810 fl6_sock_release(flowlabel);
812 UDP6_INC_STATS_USER(UDP_MIB_OUTDATAGRAMS, is_udplite);
816 * ENOBUFS = no kernel mem, SOCK_NOSPACE = no sndbuf space. Reporting
817 * ENOBUFS might not be good (it's not tunable per se), but otherwise
818 * we don't have a good statistic (IpOutDiscards but it can be too many
819 * things). We could add another new stat but at least for now that
820 * seems like overkill.
822 if (err == -ENOBUFS || test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
823 UDP6_INC_STATS_USER(UDP_MIB_SNDBUFERRORS, is_udplite);
829 if (!(msg->msg_flags&MSG_PROBE) || len)
830 goto back_from_confirm;
835 int udpv6_destroy_sock(struct sock *sk)
838 udp_v6_flush_pending_frames(sk);
841 inet6_destroy_sock(sk);
847 * Socket option code for UDP
849 int udpv6_setsockopt(struct sock *sk, int level, int optname,
850 char __user *optval, int optlen)
852 if (level == SOL_UDP || level == SOL_UDPLITE)
853 return udp_lib_setsockopt(sk, level, optname, optval, optlen,
854 udp_v6_push_pending_frames);
855 return ipv6_setsockopt(sk, level, optname, optval, optlen);
859 int compat_udpv6_setsockopt(struct sock *sk, int level, int optname,
860 char __user *optval, int optlen)
862 if (level == SOL_UDP || level == SOL_UDPLITE)
863 return udp_lib_setsockopt(sk, level, optname, optval, optlen,
864 udp_v6_push_pending_frames);
865 return compat_ipv6_setsockopt(sk, level, optname, optval, optlen);
869 int udpv6_getsockopt(struct sock *sk, int level, int optname,
870 char __user *optval, int __user *optlen)
872 if (level == SOL_UDP || level == SOL_UDPLITE)
873 return udp_lib_getsockopt(sk, level, optname, optval, optlen);
874 return ipv6_getsockopt(sk, level, optname, optval, optlen);
878 int compat_udpv6_getsockopt(struct sock *sk, int level, int optname,
879 char __user *optval, int __user *optlen)
881 if (level == SOL_UDP || level == SOL_UDPLITE)
882 return udp_lib_getsockopt(sk, level, optname, optval, optlen);
883 return compat_ipv6_getsockopt(sk, level, optname, optval, optlen);
887 static struct inet6_protocol udpv6_protocol = {
888 .handler = udpv6_rcv,
889 .err_handler = udpv6_err,
890 .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
893 /* ------------------------------------------------------------------------ */
894 #ifdef CONFIG_PROC_FS
896 static void udp6_sock_seq_show(struct seq_file *seq, struct sock *sp, int bucket)
898 struct inet_sock *inet = inet_sk(sp);
899 struct ipv6_pinfo *np = inet6_sk(sp);
900 struct in6_addr *dest, *src;
904 src = &np->rcv_saddr;
905 destp = ntohs(inet->dport);
906 srcp = ntohs(inet->sport);
908 "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
909 "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p\n",
911 src->s6_addr32[0], src->s6_addr32[1],
912 src->s6_addr32[2], src->s6_addr32[3], srcp,
913 dest->s6_addr32[0], dest->s6_addr32[1],
914 dest->s6_addr32[2], dest->s6_addr32[3], destp,
916 atomic_read(&sp->sk_wmem_alloc),
917 atomic_read(&sp->sk_rmem_alloc),
921 atomic_read(&sp->sk_refcnt), sp);
924 int udp6_seq_show(struct seq_file *seq, void *v)
926 if (v == SEQ_START_TOKEN)
931 "st tx_queue rx_queue tr tm->when retrnsmt"
932 " uid timeout inode\n");
934 udp6_sock_seq_show(seq, v, ((struct udp_iter_state *)seq->private)->bucket);
938 static struct file_operations udp6_seq_fops;
939 static struct udp_seq_afinfo udp6_seq_afinfo = {
940 .owner = THIS_MODULE,
943 .hashtable = udp_hash,
944 .seq_show = udp6_seq_show,
945 .seq_fops = &udp6_seq_fops,
948 int __init udp6_proc_init(void)
950 return udp_proc_register(&udp6_seq_afinfo);
953 void udp6_proc_exit(void) {
954 udp_proc_unregister(&udp6_seq_afinfo);
956 #endif /* CONFIG_PROC_FS */
958 /* ------------------------------------------------------------------------ */
960 struct proto udpv6_prot = {
962 .owner = THIS_MODULE,
963 .close = udp_lib_close,
964 .connect = ip6_datagram_connect,
965 .disconnect = udp_disconnect,
967 .destroy = udpv6_destroy_sock,
968 .setsockopt = udpv6_setsockopt,
969 .getsockopt = udpv6_getsockopt,
970 .sendmsg = udpv6_sendmsg,
971 .recvmsg = udpv6_recvmsg,
972 .backlog_rcv = udpv6_queue_rcv_skb,
973 .hash = udp_lib_hash,
974 .unhash = udp_lib_unhash,
975 .get_port = udp_v6_get_port,
976 .obj_size = sizeof(struct udp6_sock),
978 .compat_setsockopt = compat_udpv6_setsockopt,
979 .compat_getsockopt = compat_udpv6_getsockopt,
983 static struct inet_protosw udpv6_protosw = {
985 .protocol = IPPROTO_UDP,
987 .ops = &inet6_dgram_ops,
989 .no_check = UDP_CSUM_DEFAULT,
990 .flags = INET_PROTOSW_PERMANENT,
994 void __init udpv6_init(void)
996 if (inet6_add_protocol(&udpv6_protocol, IPPROTO_UDP) < 0)
997 printk(KERN_ERR "udpv6_init: Could not register protocol\n");
998 inet6_register_protosw(&udpv6_protosw);