commit e1a72f21ba58aca6980681ac745e2b046a4cc37c
Author: Jan Engelhardt <jengelh@xxxxxxxxxx>
Date: Wed Sep 10 22:35:22 2008 -0400
[NETFILTER]: Implement hotdrop for Ebtables
Signed-off-by: Jan Engelhardt <jengelh@xxxxxxxxxx>
---
net/bridge/netfilter/ebtables.c | 13 ++++++++++---
1 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index e45d787..2bf098a 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -77,9 +77,10 @@ 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)
@@ -155,6 +156,7 @@ 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;
@@ -175,8 +177,13 @@ 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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