diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-27 09:26:46 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-27 09:26:46 -0700 |
commit | 15c54033964a943de7b0763efd3bd0ede7326395 (patch) | |
tree | 840b292612d1b5396d5bab5bde537a9013db3ceb /net/ipv4/netfilter/iptable_mangle.c | |
parent | ad5da3cf39a5b11a198929be1f2644e17ecd767e (diff) | |
parent | 912a41a4ab935ce8c4308428ec13fc7f8b1f18f4 (diff) |
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (448 commits)
[IPV4] nl_fib_lookup: Initialise res.r before fib_res_put(&res)
[IPV6]: Fix thinko in ipv6_rthdr_rcv() changes.
[IPV4]: Add multipath cached to feature-removal-schedule.txt
[WIRELESS] cfg80211: Clarify locking comment.
[WIRELESS] cfg80211: Fix locking in wiphy_new.
[WEXT] net_device: Don't include wext bits if not required.
[WEXT]: Misc code cleanups.
[WEXT]: Reduce inline abuse.
[WEXT]: Move EXPORT_SYMBOL statements where they belong.
[WEXT]: Cleanup early ioctl call path.
[WEXT]: Remove options.
[WEXT]: Remove dead debug code.
[WEXT]: Clean up how wext is called.
[WEXT]: Move to net/wireless
[AFS]: Eliminate cmpxchg() usage in vlocation code.
[RXRPC]: Fix pointers passed to bitops.
[RXRPC]: Remove bogus atomic_* overrides.
[AFS]: Fix u64 printing in debug logging.
[AFS]: Add "directory write" support.
[AFS]: Implement the CB.InitCallBackState3 operation.
...
Diffstat (limited to 'net/ipv4/netfilter/iptable_mangle.c')
-rw-r--r-- | net/ipv4/netfilter/iptable_mangle.c | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/net/ipv4/netfilter/iptable_mangle.c b/net/ipv4/netfilter/iptable_mangle.c index 98b66ef0c71..9278802f274 100644 --- a/net/ipv4/netfilter/iptable_mangle.c +++ b/net/ipv4/netfilter/iptable_mangle.c @@ -7,8 +7,6 @@ * 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. - * - * Extended to all five netfilter hooks by Brad Chapman & Harald Welte */ #include <linux/module.h> #include <linux/netfilter_ipv4/ip_tables.h> @@ -17,6 +15,7 @@ #include <net/sock.h> #include <net/route.h> #include <linux/ip.h> +#include <net/ip.h> MODULE_LICENSE("GPL"); MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>"); @@ -130,13 +129,14 @@ ipt_local_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { unsigned int ret; + const struct iphdr *iph; u_int8_t tos; __be32 saddr, daddr; u_int32_t mark; /* root is playing with raw sockets. */ if ((*pskb)->len < sizeof(struct iphdr) - || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) { + || ip_hdrlen(*pskb) < sizeof(struct iphdr)) { if (net_ratelimit()) printk("ipt_hook: happy cracking.\n"); return NF_ACCEPT; @@ -144,19 +144,23 @@ ipt_local_hook(unsigned int hook, /* Save things which could affect route */ mark = (*pskb)->mark; - saddr = (*pskb)->nh.iph->saddr; - daddr = (*pskb)->nh.iph->daddr; - tos = (*pskb)->nh.iph->tos; + iph = ip_hdr(*pskb); + saddr = iph->saddr; + daddr = iph->daddr; + tos = iph->tos; ret = ipt_do_table(pskb, hook, in, out, &packet_mangler); /* Reroute for ANY change. */ - if (ret != NF_DROP && ret != NF_STOLEN && ret != NF_QUEUE - && ((*pskb)->nh.iph->saddr != saddr - || (*pskb)->nh.iph->daddr != daddr - || (*pskb)->mark != mark - || (*pskb)->nh.iph->tos != tos)) - if (ip_route_me_harder(pskb, RTN_UNSPEC)) - ret = NF_DROP; + if (ret != NF_DROP && ret != NF_STOLEN && ret != NF_QUEUE) { + iph = ip_hdr(*pskb); + + if (iph->saddr != saddr || + iph->daddr != daddr || + (*pskb)->mark != mark || + iph->tos != tos) + if (ip_route_me_harder(pskb, RTN_UNSPEC)) + ret = NF_DROP; + } return ret; } |