From ac96ae67316265e65a5cd6bddeffafb29cc2fe68 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 6 Aug 2011 12:39:31 +0000 Subject: [PATCH] kernel: add missing checks in the netfilter optimization patch which broke some rules containing only source/destination address checks SVN-Revision: 27923 --- ...etfilter_match_bypass_default_checks.patch | 13 ++++++++----- ...netfilter_match_bypass_default_table.patch | 6 +++--- ...etfilter_match_bypass_default_checks.patch | 19 +++++++++++-------- ...netfilter_match_bypass_default_table.patch | 6 +++--- 4 files changed, 25 insertions(+), 19 deletions(-) diff --git a/target/linux/generic/patches-2.6.39/610-netfilter_match_bypass_default_checks.patch b/target/linux/generic/patches-2.6.39/610-netfilter_match_bypass_default_checks.patch index ac0fd151cd..98c28c7433 100644 --- a/target/linux/generic/patches-2.6.39/610-netfilter_match_bypass_default_checks.patch +++ b/target/linux/generic/patches-2.6.39/610-netfilter_match_bypass_default_checks.patch @@ -20,7 +20,7 @@ if (FWINV((ip->saddr&ipinfo->smsk.s_addr) != ipinfo->src.s_addr, IPT_INV_SRCIP) || FWINV((ip->daddr&ipinfo->dmsk.s_addr) != ipinfo->dst.s_addr, -@@ -143,6 +146,26 @@ ip_packet_match(const struct iphdr *ip, +@@ -143,6 +146,29 @@ ip_packet_match(const struct iphdr *ip, return true; } @@ -38,6 +38,9 @@ + if (memcmp(ip->outiface_mask, iface_mask, IFNAMSIZ) != 0) + return; + ++ if (ip->smsk.s_addr || ip->dmsk.s_addr) ++ return; ++ + if (ip->proto) + return; + @@ -47,7 +50,7 @@ static bool ip_checkentry(const struct ipt_ip *ip) { -@@ -566,7 +589,7 @@ static void cleanup_match(struct xt_entr +@@ -566,7 +592,7 @@ static void cleanup_match(struct xt_entr } static int @@ -56,7 +59,7 @@ { const struct xt_entry_target *t; -@@ -575,6 +598,8 @@ check_entry(const struct ipt_entry *e, c +@@ -575,6 +601,8 @@ check_entry(const struct ipt_entry *e, c return -EINVAL; } @@ -65,7 +68,7 @@ if (e->target_offset + sizeof(struct xt_entry_target) > e->next_offset) return -EINVAL; -@@ -936,6 +961,7 @@ copy_entries_to_user(unsigned int total_ +@@ -936,6 +964,7 @@ copy_entries_to_user(unsigned int total_ const struct xt_table_info *private = table->private; int ret = 0; const void *loc_cpu_entry; @@ -73,7 +76,7 @@ counters = alloc_counters(table); if (IS_ERR(counters)) -@@ -967,6 +993,14 @@ copy_entries_to_user(unsigned int total_ +@@ -967,6 +996,14 @@ copy_entries_to_user(unsigned int total_ goto free_counters; } diff --git a/target/linux/generic/patches-2.6.39/611-netfilter_match_bypass_default_table.patch b/target/linux/generic/patches-2.6.39/611-netfilter_match_bypass_default_table.patch index f2004a6b12..0ea58c95d9 100644 --- a/target/linux/generic/patches-2.6.39/611-netfilter_match_bypass_default_table.patch +++ b/target/linux/generic/patches-2.6.39/611-netfilter_match_bypass_default_table.patch @@ -1,6 +1,6 @@ --- a/net/ipv4/netfilter/ip_tables.c +++ b/net/ipv4/netfilter/ip_tables.c -@@ -316,6 +316,33 @@ struct ipt_entry *ipt_next_entry(const s +@@ -319,6 +319,33 @@ struct ipt_entry *ipt_next_entry(const s return (void *)entry + entry->next_offset; } @@ -34,7 +34,7 @@ /* Returns one of the generic firewall policies, like NF_ACCEPT. */ unsigned int ipt_do_table(struct sk_buff *skb, -@@ -339,6 +366,23 @@ ipt_do_table(struct sk_buff *skb, +@@ -342,6 +369,23 @@ ipt_do_table(struct sk_buff *skb, ip = ip_hdr(skb); indev = in ? in->name : nulldevname; outdev = out ? out->name : nulldevname; @@ -58,7 +58,7 @@ /* We handle fragments by dealing with the first fragment as * if it was a normal packet. All other fragments are treated * normally, except that they will NEVER match rules that ask -@@ -353,17 +397,6 @@ ipt_do_table(struct sk_buff *skb, +@@ -356,17 +400,6 @@ ipt_do_table(struct sk_buff *skb, acpar.family = NFPROTO_IPV4; acpar.hooknum = hook; diff --git a/target/linux/generic/patches-3.0/610-netfilter_match_bypass_default_checks.patch b/target/linux/generic/patches-3.0/610-netfilter_match_bypass_default_checks.patch index 4760c8ad85..b65e00ff82 100644 --- a/target/linux/generic/patches-3.0/610-netfilter_match_bypass_default_checks.patch +++ b/target/linux/generic/patches-3.0/610-netfilter_match_bypass_default_checks.patch @@ -20,7 +20,7 @@ if (FWINV((ip->saddr&ipinfo->smsk.s_addr) != ipinfo->src.s_addr, IPT_INV_SRCIP) || FWINV((ip->daddr&ipinfo->dmsk.s_addr) != ipinfo->dst.s_addr, -@@ -134,6 +137,26 @@ ip_packet_match(const struct iphdr *ip, +@@ -134,6 +137,29 @@ ip_packet_match(const struct iphdr *ip, return true; } @@ -38,6 +38,9 @@ + if (memcmp(ip->outiface_mask, iface_mask, IFNAMSIZ) != 0) + return; + ++ if (ip->smsk.s_addr || ip->dmsk.s_addr) ++ return; ++ + if (ip->proto) + return; + @@ -47,7 +50,7 @@ static bool ip_checkentry(const struct ipt_ip *ip) { -@@ -561,7 +584,7 @@ static void cleanup_match(struct xt_entr +@@ -561,7 +587,7 @@ static void cleanup_match(struct xt_entr } static int @@ -56,7 +59,7 @@ { const struct xt_entry_target *t; -@@ -570,6 +593,8 @@ check_entry(const struct ipt_entry *e, c +@@ -570,6 +596,8 @@ check_entry(const struct ipt_entry *e, c return -EINVAL; } @@ -65,7 +68,7 @@ if (e->target_offset + sizeof(struct xt_entry_target) > e->next_offset) return -EINVAL; -@@ -931,6 +956,7 @@ copy_entries_to_user(unsigned int total_ +@@ -931,6 +959,7 @@ copy_entries_to_user(unsigned int total_ const struct xt_table_info *private = table->private; int ret = 0; const void *loc_cpu_entry; @@ -73,11 +76,10 @@ counters = alloc_counters(table); if (IS_ERR(counters)) -@@ -961,6 +987,14 @@ copy_entries_to_user(unsigned int total_ - ret = -EFAULT; +@@ -962,6 +991,14 @@ copy_entries_to_user(unsigned int total_ goto free_counters; } -+ + + flags = e->ip.flags & IPT_F_MASK; + if (copy_to_user(userptr + off + + offsetof(struct ipt_entry, ip.flags), @@ -85,6 +87,7 @@ + ret = -EFAULT; + goto free_counters; + } - ++ for (i = sizeof(struct ipt_entry); i < e->target_offset; + i += m->u.match_size) { diff --git a/target/linux/generic/patches-3.0/611-netfilter_match_bypass_default_table.patch b/target/linux/generic/patches-3.0/611-netfilter_match_bypass_default_table.patch index 113f140123..3cf0e5a32d 100644 --- a/target/linux/generic/patches-3.0/611-netfilter_match_bypass_default_table.patch +++ b/target/linux/generic/patches-3.0/611-netfilter_match_bypass_default_table.patch @@ -1,6 +1,6 @@ --- a/net/ipv4/netfilter/ip_tables.c +++ b/net/ipv4/netfilter/ip_tables.c -@@ -307,6 +307,33 @@ struct ipt_entry *ipt_next_entry(const s +@@ -310,6 +310,33 @@ struct ipt_entry *ipt_next_entry(const s return (void *)entry + entry->next_offset; } @@ -34,7 +34,7 @@ /* Returns one of the generic firewall policies, like NF_ACCEPT. */ unsigned int ipt_do_table(struct sk_buff *skb, -@@ -331,6 +358,25 @@ ipt_do_table(struct sk_buff *skb, +@@ -334,6 +361,25 @@ ipt_do_table(struct sk_buff *skb, ip = ip_hdr(skb); indev = in ? in->name : nulldevname; outdev = out ? out->name : nulldevname; @@ -60,7 +60,7 @@ /* We handle fragments by dealing with the first fragment as * if it was a normal packet. All other fragments are treated * normally, except that they will NEVER match rules that ask -@@ -345,18 +391,6 @@ ipt_do_table(struct sk_buff *skb, +@@ -348,18 +394,6 @@ ipt_do_table(struct sk_buff *skb, acpar.family = NFPROTO_IPV4; acpar.hooknum = hook; -- 2.30.2