* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
- *
- * 19 Jan 2002 Harald Welte <laforge@gnumonks.org>
- * - increase module usage count as soon as we have rules inside
- * a table
- * 06 Jun 2002 Andras Kis-Szabo <kisza@sch.bme.hu>
- * - new extension header parser code
- * 15 Oct 2005 Harald Welte <laforge@netfilter.org>
- * - Unification of {ip,ip6}_tables into x_tables
- * - Removed tcp and udp code, since it's not ipv6 specific
*/
#include <linux/capability.h>
#endif
/* Check for an extension */
-int
+int
ip6t_ext_hdr(u8 nexthdr)
{
- return ( (nexthdr == IPPROTO_HOPOPTS) ||
- (nexthdr == IPPROTO_ROUTING) ||
- (nexthdr == IPPROTO_FRAGMENT) ||
- (nexthdr == IPPROTO_ESP) ||
- (nexthdr == IPPROTO_AH) ||
- (nexthdr == IPPROTO_NONE) ||
- (nexthdr == IPPROTO_DSTOPTS) );
+ return ( (nexthdr == IPPROTO_HOPOPTS) ||
+ (nexthdr == IPPROTO_ROUTING) ||
+ (nexthdr == IPPROTO_FRAGMENT) ||
+ (nexthdr == IPPROTO_ESP) ||
+ (nexthdr == IPPROTO_AH) ||
+ (nexthdr == IPPROTO_NONE) ||
+ (nexthdr == IPPROTO_DSTOPTS) );
}
/* Returns whether matches rule or not. */
{
size_t i;
unsigned long ret;
- const struct ipv6hdr *ipv6 = skb->nh.ipv6h;
+ const struct ipv6hdr *ipv6 = ipv6_hdr(skb);
#define FWINV(bool,invflg) ((bool) ^ !!(ip6info->invflags & invflg))
if (FWINV(ipv6_masked_addr_cmp(&ipv6->saddr, &ip6info->smsk,
- &ip6info->src), IP6T_INV_SRCIP)
+ &ip6info->src), IP6T_INV_SRCIP)
|| FWINV(ipv6_masked_addr_cmp(&ipv6->daddr, &ip6info->dmsk,
- &ip6info->dst), IP6T_INV_DSTIP)) {
+ &ip6info->dst), IP6T_INV_DSTIP)) {
dprintf("Source or dest mismatch.\n");
/*
dprintf("SRC: %u. Mask: %u. Target: %u.%s\n", ip->saddr,
*fragoff = _frag_off;
dprintf("Packet protocol %hi ?= %s%hi.\n",
- protohdr,
+ protohdr,
ip6info->invflags & IP6T_INV_PROTO ? "!":"",
ip6info->proto);
}
/* should be ip6 safe */
-static inline int
+static inline int
ip6_checkentry(const struct ip6t_ip6 *ipv6)
{
if (ipv6->flags & ~IP6T_F_MASK) {
goto no_match;
ADD_COUNTER(e->counters,
- ntohs((*pskb)->nh.ipv6h->payload_len)
+ ntohs(ipv6_hdr(*pskb)->payload_len)
+ IPV6_HDR_LEN,
1);
e = get_entry(table_base, v);
} else {
/* Targets which reenter must return
- abs. verdicts */
+ abs. verdicts */
#ifdef CONFIG_NETFILTER_DEBUG
((struct ip6t_entry *)table_base)->comefrom
= 0xeeeeeeec;
int ret;
match = try_then_request_module(xt_find_match(AF_INET6, m->u.user.name,
- m->u.user.revision),
+ m->u.user.revision),
"ip6t_%s", m->u.user.name);
if (IS_ERR(match) || !match) {
- duprintf("check_match: `%s' not found\n", m->u.user.name);
+ duprintf("check_match: `%s' not found\n", m->u.user.name);
return match ? PTR_ERR(match) : -ENOENT;
}
m->u.kernel.match = match;
}
/* FIXME: underflows must be unconditional, standard verdicts
- < 0 (not IP6T_RETURN). --RR */
+ < 0 (not IP6T_RETURN). --RR */
/* Clear counters and comefrom */
e->counters = ((struct xt_counters) { 0, 0 });
/* Update module usage count based on number of rules */
duprintf("do_replace: oldnum=%u, initnum=%u, newnum=%u\n",
oldinfo->number, oldinfo->initial_entries, newinfo->number);
- if ((oldinfo->number > oldinfo->initial_entries) ||
- (newinfo->number <= oldinfo->initial_entries))
+ if ((oldinfo->number > oldinfo->initial_entries) ||
+ (newinfo->number <= oldinfo->initial_entries))
module_put(t->me);
if ((oldinfo->number > oldinfo->initial_entries) &&
(newinfo->number <= oldinfo->initial_entries))
int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
int target, unsigned short *fragoff)
{
- unsigned int start = (u8*)(skb->nh.ipv6h + 1) - skb->data;
- u8 nexthdr = skb->nh.ipv6h->nexthdr;
+ unsigned int start = skb_network_offset(skb) + sizeof(struct ipv6hdr);
+ u8 nexthdr = ipv6_hdr(skb)->nexthdr;
unsigned int len = skb->len - start;
if (fragoff)
}
hdrlen = 8;
} else if (nexthdr == NEXTHDR_AUTH)
- hdrlen = (hp->hdrlen + 2) << 2;
+ hdrlen = (hp->hdrlen + 2) << 2;
else
- hdrlen = ipv6_optlen(hp);
+ hdrlen = ipv6_optlen(hp);
nexthdr = hp->nexthdr;
len -= hdrlen;