diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2018-02-01 18:49:00 +0100 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2018-02-02 18:26:42 +0100 |
| commit | c7f0030b5b67866c588845abde7bf011de25b98a (patch) | |
| tree | 88aa5bcfc07581b764d8db201d356a541c92ead3 /net/netfilter/nft_flow_offload.c | |
| parent | ba7cd5d95f25cc6005f687dabdb4e7a6063adda9 (diff) | |
netfilter: nft_flow_offload: wait for garbage collector to run after cleanup
If netdevice goes down, then flowtable entries are scheduled to be
removed. Wait for garbage collector to have a chance to run so it can
delete them from the hashtable.
The flush call might sleep, so hold the nfnl mutex from
nft_flow_table_iterate() instead of rcu read side lock. The use of the
nfnl mutex is also implicitly fixing races between updates via nfnetlink
and netdevice event.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/nft_flow_offload.c')
| -rw-r--r-- | net/netfilter/nft_flow_offload.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/netfilter/nft_flow_offload.c b/net/netfilter/nft_flow_offload.c index 4503b8dcf9c0..1739ff8ca21f 100644 --- a/net/netfilter/nft_flow_offload.c +++ b/net/netfilter/nft_flow_offload.c @@ -208,6 +208,7 @@ static void nft_flow_offload_iterate_cleanup(struct nf_flowtable *flowtable, void *data) { nf_flow_table_iterate(flowtable, flow_offload_iterate_cleanup, data); + flush_delayed_work(&flowtable->gc_work); } static int flow_offload_netdev_event(struct notifier_block *this, |