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authorJan Engelhardt <jengelh@medozas.de>2008-10-08 13:35:16 +0400
committerPatrick McHardy <kaber@trash.net>2008-10-08 13:35:16 +0400
commit5365f8022e04310f0276c95e82548da917d514db (patch)
tree6a6bb253d83ffe235da2afbe4676d8aa38d57fd1 /net/bridge
parentf2ff525c8dae57b3cda51d76443f60f764f34202 (diff)
downloadlinux-5365f8022e04310f0276c95e82548da917d514db.tar.xz
netfilter: implement hotdrop for Ebtables
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/netfilter/ebtables.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index c4f7a2e8ed39..7964d3f03886 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -78,9 +78,10 @@ static inline int ebt_do_watcher (struct ebt_entry_watcher *w,
static inline int ebt_do_match (struct ebt_entry_match *m,
const struct sk_buff *skb, const struct net_device *in,
- const struct net_device *out)
+ const struct net_device *out, bool *hotdrop)
{
- return m->u.match->match(skb, in, out, m->u.match, m->data, 0, 0, NULL);
+ return m->u.match->match(skb, in, out, m->u.match,
+ m->data, 0, 0, hotdrop);
}
static inline int ebt_dev_check(char *entry, const struct net_device *device)
@@ -156,6 +157,7 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb,
struct ebt_entries *chaininfo;
char *base;
struct ebt_table_info *private;
+ bool hotdrop = false;
read_lock_bh(&table->lock);
private = table->private;
@@ -176,8 +178,13 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb,
if (ebt_basic_match(point, eth_hdr(skb), in, out))
goto letscontinue;
- if (EBT_MATCH_ITERATE(point, ebt_do_match, skb, in, out) != 0)
+ if (EBT_MATCH_ITERATE(point, ebt_do_match, skb,
+ in, out, &hotdrop) != 0)
goto letscontinue;
+ if (hotdrop) {
+ read_unlock_bh(&table->lock);
+ return NF_DROP;
+ }
/* increase counter */
(*(counter_base + i)).pcnt++;