diff options
| author | Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> | 2011-04-04 15:19:25 +0200 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2011-04-04 15:19:25 +0200 |
| commit | 2f9f28b212a2bd4948c8ceaaec33ce0123632129 (patch) | |
| tree | 8c9961f59a190ab05a568216d69f4809ab3041e2 /net/netfilter/ipset/ip_set_list_set.c | |
| parent | 512d06b5b64fb422d90f199b1be188082729edf9 (diff) | |
netfilter: ipset: references are protected by rwlock instead of mutex
The timeout variant of the list:set type must reference the member sets.
However, its garbage collector runs at timer interrupt so the mutex
protection of the references is a no go. Therefore the reference protection
is converted to rwlock.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/netfilter/ipset/ip_set_list_set.c')
| -rw-r--r-- | net/netfilter/ipset/ip_set_list_set.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/net/netfilter/ipset/ip_set_list_set.c b/net/netfilter/ipset/ip_set_list_set.c index f4a46c0d25f3..e9159e99fc4b 100644 --- a/net/netfilter/ipset/ip_set_list_set.c +++ b/net/netfilter/ipset/ip_set_list_set.c @@ -366,8 +366,7 @@ list_set_head(struct ip_set *set, struct sk_buff *skb) NLA_PUT_NET32(skb, IPSET_ATTR_SIZE, htonl(map->size)); if (with_timeout(map->timeout)) NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT, htonl(map->timeout)); - NLA_PUT_NET32(skb, IPSET_ATTR_REFERENCES, - htonl(atomic_read(&set->ref) - 1)); + NLA_PUT_NET32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref - 1)); NLA_PUT_NET32(skb, IPSET_ATTR_MEMSIZE, htonl(sizeof(*map) + map->size * map->dsize)); ipset_nest_end(skb, nested); @@ -457,8 +456,7 @@ list_set_gc(unsigned long ul_set) struct list_set *map = set->data; struct set_telem *e; u32 i; - - /* nfnl_lock should be called */ + write_lock_bh(&set->lock); for (i = 0; i < map->size; i++) { e = list_set_telem(map, i); |