diff options
Diffstat (limited to 'net/netfilter/nf_tables_core.c')
-rw-r--r-- | net/netfilter/nf_tables_core.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/net/netfilter/nf_tables_core.c b/net/netfilter/nf_tables_core.c index dfd0bf3810d2..40e744572283 100644 --- a/net/netfilter/nf_tables_core.c +++ b/net/netfilter/nf_tables_core.c @@ -119,14 +119,21 @@ DEFINE_STATIC_KEY_FALSE(nft_counters_enabled); static noinline void nft_update_chain_stats(const struct nft_chain *chain, const struct nft_pktinfo *pkt) { + struct nft_base_chain *base_chain; struct nft_stats *stats; + base_chain = nft_base_chain(chain); + if (!base_chain->stats) + return; + local_bh_disable(); - stats = this_cpu_ptr(rcu_dereference(nft_base_chain(chain)->stats)); - u64_stats_update_begin(&stats->syncp); - stats->pkts++; - stats->bytes += pkt->skb->len; - u64_stats_update_end(&stats->syncp); + stats = this_cpu_ptr(rcu_dereference(base_chain->stats)); + if (stats) { + u64_stats_update_begin(&stats->syncp); + stats->pkts++; + stats->bytes += pkt->skb->len; + u64_stats_update_end(&stats->syncp); + } local_bh_enable(); } |