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author | Jonas Gorski <jogo@openwrt.org> | 2012-01-13 14:55:07 +0000 |
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committer | Jonas Gorski <jogo@openwrt.org> | 2012-01-13 14:55:07 +0000 |
commit | 1bc0abb058e09fd7214507dd4a095658a4b8d122 (patch) | |
tree | 82c35f5f43253e1a2ff9c2ff1318fac1c86e57df /target/linux/generic/patches-3.2/611-netfilter_match_bypass_default_table.patch | |
parent | 50d4c0e31a6706f28b3c69cd24bcf0c205223e16 (diff) | |
download | mtk-20170518-1bc0abb058e09fd7214507dd4a095658a4b8d122.zip mtk-20170518-1bc0abb058e09fd7214507dd4a095658a4b8d122.tar.gz mtk-20170518-1bc0abb058e09fd7214507dd4a095658a4b8d122.tar.bz2 |
kernel: add support for linux 3.2.1
SVN-Revision: 29730
Diffstat (limited to 'target/linux/generic/patches-3.2/611-netfilter_match_bypass_default_table.patch')
-rw-r--r-- | target/linux/generic/patches-3.2/611-netfilter_match_bypass_default_table.patch | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.2/611-netfilter_match_bypass_default_table.patch b/target/linux/generic/patches-3.2/611-netfilter_match_bypass_default_table.patch new file mode 100644 index 0000000..3cf0e5a --- /dev/null +++ b/target/linux/generic/patches-3.2/611-netfilter_match_bypass_default_table.patch @@ -0,0 +1,81 @@ +--- a/net/ipv4/netfilter/ip_tables.c ++++ b/net/ipv4/netfilter/ip_tables.c +@@ -310,6 +310,33 @@ struct ipt_entry *ipt_next_entry(const s + return (void *)entry + entry->next_offset; + } + ++static bool ++ipt_handle_default_rule(struct ipt_entry *e, unsigned int *verdict) ++{ ++ struct xt_entry_target *t; ++ struct xt_standard_target *st; ++ ++ if (e->target_offset != sizeof(struct ipt_entry)) ++ return false; ++ ++ if (!(e->ip.flags & IPT_F_NO_DEF_MATCH)) ++ return false; ++ ++ t = ipt_get_target(e); ++ if (t->u.kernel.target->target) ++ return false; ++ ++ st = (struct xt_standard_target *) t; ++ if (st->verdict == XT_RETURN) ++ return false; ++ ++ if (st->verdict >= 0) ++ return false; ++ ++ *verdict = (unsigned)(-st->verdict) - 1; ++ return true; ++} ++ + /* Returns one of the generic firewall policies, like NF_ACCEPT. */ + unsigned int + 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; ++ ++ IP_NF_ASSERT(table->valid_hooks & (1 << hook)); ++ local_bh_disable(); ++ addend = xt_write_recseq_begin(); ++ private = table->private; ++ cpu = smp_processor_id(); ++ table_base = private->entries[cpu]; ++ jumpstack = (struct ipt_entry **)private->jumpstack[cpu]; ++ stackptr = per_cpu_ptr(private->stackptr, cpu); ++ origptr = *stackptr; ++ ++ e = get_entry(table_base, private->hook_entry[hook]); ++ if (ipt_handle_default_rule(e, &verdict)) { ++ ADD_COUNTER(e->counters, skb->len, 1); ++ xt_write_recseq_end(addend); ++ local_bh_enable(); ++ return verdict; ++ } ++ + /* 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 +@@ -348,18 +394,6 @@ ipt_do_table(struct sk_buff *skb, + acpar.family = NFPROTO_IPV4; + acpar.hooknum = hook; + +- IP_NF_ASSERT(table->valid_hooks & (1 << hook)); +- local_bh_disable(); +- addend = xt_write_recseq_begin(); +- private = table->private; +- cpu = smp_processor_id(); +- table_base = private->entries[cpu]; +- jumpstack = (struct ipt_entry **)private->jumpstack[cpu]; +- stackptr = per_cpu_ptr(private->stackptr, cpu); +- origptr = *stackptr; +- +- e = get_entry(table_base, private->hook_entry[hook]); +- + pr_debug("Entering %s(hook %u); sp at %u (UF %p)\n", + table->name, hook, origptr, + get_entry(table_base, private->underflow[hook])); |