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netfilter: implement hotdrop for Ebtables

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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Jan Engelhardt 2008-10-08 11:35:16 +02:00 committed by Patrick McHardy
parent f2ff525c8d
commit 5365f8022e
1 changed files with 10 additions and 3 deletions
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13
net/bridge/netfilter/ebtables.c
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@ -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, static inline int ebt_do_match (struct ebt_entry_match *m,
const struct sk_buff *skb, const struct net_device *in, 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) 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; struct ebt_entries *chaininfo;
char *base; char *base;
struct ebt_table_info *private; struct ebt_table_info *private;
bool hotdrop = false;
read_lock_bh(&table->lock); read_lock_bh(&table->lock);
private = table->private; 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)) if (ebt_basic_match(point, eth_hdr(skb), in, out))
goto letscontinue; 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; goto letscontinue;
if (hotdrop) {
read_unlock_bh(&table->lock);
return NF_DROP;
}
/* increase counter */ /* increase counter */
(*(counter_base + i)).pcnt++; (*(counter_base + i)).pcnt++;