diff options
| author | Eric Dumazet <edumazet@google.com> | 2016-04-01 17:52:15 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-04-05 04:11:19 +0200 |
| commit | 2d331915a04144dad738e725769d8fac06ef6155 (patch) | |
| tree | 5bf80c73627b0783603e8a46573db2cf50041280 /net/ipv4/inet_hashtables.c | |
| parent | tcp/dccp: remove BH disable/enable in lookup (diff) | |
| download | linux-2d331915a04144dad738e725769d8fac06ef6155.tar.xz linux-2d331915a04144dad738e725769d8fac06ef6155.zip | |
tcp/dccp: use rcu locking in inet_diag_find_one_icsk()
RX packet processing holds rcu_read_lock(), so we can remove
pairs of rcu_read_lock()/rcu_read_unlock() in lookup functions
if inet_diag also holds rcu before calling them.
This is needed anyway as __inet_lookup_listener() and
inet6_lookup_listener() will soon no longer increment
refcount on the found listener.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/inet_hashtables.c')
| -rw-r--r-- | net/ipv4/inet_hashtables.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c index bc68eced0105..387338d71dcd 100644 --- a/net/ipv4/inet_hashtables.c +++ b/net/ipv4/inet_hashtables.c @@ -220,7 +220,6 @@ struct sock *__inet_lookup_listener(struct net *net, bool select_ok = true; u32 phash = 0; - rcu_read_lock(); begin: result = NULL; hiscore = 0; @@ -269,7 +268,6 @@ found: goto begin; } } - rcu_read_unlock(); return result; } EXPORT_SYMBOL_GPL(__inet_lookup_listener); @@ -312,7 +310,6 @@ struct sock *__inet_lookup_established(struct net *net, unsigned int slot = hash & hashinfo->ehash_mask; struct inet_ehash_bucket *head = &hashinfo->ehash[slot]; - rcu_read_lock(); begin: sk_nulls_for_each_rcu(sk, node, &head->chain) { if (sk->sk_hash != hash) @@ -339,7 +336,6 @@ begin: out: sk = NULL; found: - rcu_read_unlock(); return sk; } EXPORT_SYMBOL_GPL(__inet_lookup_established); |