commit 5365f8022e04310f0276c95e82548da917d514db
Author: Jan Engelhardt <jengelh@xxxxxxxxxx>
Date: Wed Oct 8 11:35:16 2008 +0200
netfilter: implement hotdrop for Ebtables
Signed-off-by: Jan Engelhardt <jengelh@xxxxxxxxxx>
Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index c4f7a2e..7964d3f 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++;
--
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