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| author |   Paul Blakey <paulb@mellanox.com> | 2020-03-27 12:12:29 +0300 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2020-03-27 18:42:20 +0100 |
| commit | 422c032afcf57d5e8109a54912e22ffc53d99068 (patch) | |
| tree | bd4d2a07642a24d79e512e6226467c765aca79a7 /net/netfilter | |
| parent | netfilter: nf_tables: silence a RCU-list warning in nft_table_lookup() (diff) | |
| download | wireguard-linux-422c032afcf57d5e8109a54912e22ffc53d99068.tar.xz wireguard-linux-422c032afcf57d5e8109a54912e22ffc53d99068.zip | |
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 <paulb@mellanox.com>
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter')
| -rw-r--r-- | net/netfilter/nf_flow_table_core.c | 11 | ||||
| -rw-r--r-- | net/netfilter/nf_flow_table_offload.c | 4 |
2 files changed, 7 insertions, 8 deletions
diff --git a/net/netfilter/nf_flow_table_core.c b/net/netfilter/nf_flow_table_core.c index 9a477bd563b7..9399bb2df295 100644 --- a/net/netfilter/nf_flow_table_core.c +++ b/net/netfilter/nf_flow_table_core.c @@ -392,7 +392,7 @@ int nf_flow_table_offload_add_cb(struct nf_flowtable *flow_table, struct flow_block_cb *block_cb; int err = 0; - mutex_lock(&flow_table->flow_block_lock); + down_write(&flow_table->flow_block_lock); block_cb = flow_block_cb_lookup(block, cb, cb_priv); if (block_cb) { err = -EEXIST; @@ -408,7 +408,7 @@ int nf_flow_table_offload_add_cb(struct nf_flowtable *flow_table, list_add_tail(&block_cb->list, &block->cb_list); unlock: - mutex_unlock(&flow_table->flow_block_lock); + up_write(&flow_table->flow_block_lock); return err; } EXPORT_SYMBOL_GPL(nf_flow_table_offload_add_cb); @@ -419,13 +419,13 @@ void nf_flow_table_offload_del_cb(struct nf_flowtable *flow_table, struct flow_block *block = &flow_table->flow_block; struct flow_block_cb *block_cb; - mutex_lock(&flow_table->flow_block_lock); + down_write(&flow_table->flow_block_lock); block_cb = flow_block_cb_lookup(block, cb, cb_priv); if (block_cb) list_del(&block_cb->list); else WARN_ON(true); - mutex_unlock(&flow_table->flow_block_lock); + up_write(&flow_table->flow_block_lock); } EXPORT_SYMBOL_GPL(nf_flow_table_offload_del_cb); @@ -551,7 +551,7 @@ int nf_flow_table_init(struct nf_flowtable *flowtable) INIT_DEFERRABLE_WORK(&flowtable->gc_work, nf_flow_offload_work_gc); flow_block_init(&flowtable->flow_block); - mutex_init(&flowtable->flow_block_lock); + init_rwsem(&flowtable->flow_block_lock); err = rhashtable_init(&flowtable->rhashtable, &nf_flow_offload_rhash_params); @@ -614,7 +614,6 @@ void nf_flow_table_free(struct nf_flowtable *flow_table) nf_flow_table_iterate(flow_table, nf_flow_offload_gc_step, flow_table); nf_flow_table_offload_flush(flow_table); rhashtable_destroy(&flow_table->rhashtable); - mutex_destroy(&flow_table->flow_block_lock); } EXPORT_SYMBOL_GPL(nf_flow_table_free); 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)); |