From 422c032afcf57d5e8109a54912e22ffc53d99068 Mon Sep 17 00:00:00 2001 From: Paul Blakey Date: Fri, 27 Mar 2020 12:12:29 +0300 Subject: netfilter: flowtable: Use rw sem as flow block lock Currently flow offload threads are synchronized by the flow block mutex. Use rw lock instead to increase flow insertion (read) concurrency. Signed-off-by: Paul Blakey Reviewed-by: Oz Shlomo Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_flow_table_offload.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net/netfilter/nf_flow_table_offload.c') diff --git a/net/netfilter/nf_flow_table_offload.c b/net/netfilter/nf_flow_table_offload.c index 0c6437fab4fe..b96db831b4ca 100644 --- a/net/netfilter/nf_flow_table_offload.c +++ b/net/netfilter/nf_flow_table_offload.c @@ -691,7 +691,7 @@ static int nf_flow_offload_tuple(struct nf_flowtable *flowtable, if (cmd == FLOW_CLS_REPLACE) cls_flow.rule = flow_rule->rule; - mutex_lock(&flowtable->flow_block_lock); + down_read(&flowtable->flow_block_lock); list_for_each_entry(block_cb, block_cb_list, list) { err = block_cb->cb(TC_SETUP_CLSFLOWER, &cls_flow, block_cb->cb_priv); @@ -700,7 +700,7 @@ static int nf_flow_offload_tuple(struct nf_flowtable *flowtable, i++; } - mutex_unlock(&flowtable->flow_block_lock); + up_read(&flowtable->flow_block_lock); if (cmd == FLOW_CLS_STATS) memcpy(stats, &cls_flow.stats, sizeof(*stats)); -- cgit v1.2.3