diff options
| author |   Kuniyuki Iwashima <kuniyu@amazon.com> | 2023-12-19 09:18:30 +0900 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2023-12-22 22:15:35 +0000 |
| commit | 8002d44fe84dd7b98812aadcbc1bd897e270355c (patch) | |
| tree | 90af38c04d00d50b9d47edf7a3dcfc9cbf9b0c9b /net/ipv4/inet_connection_sock.c | |
| parent | tcp: Iterate tb->bhash2 in inet_csk_bind_conflict(). (diff) | |
| download | linux-8002d44fe84dd7b98812aadcbc1bd897e270355c.tar.xz linux-8002d44fe84dd7b98812aadcbc1bd897e270355c.zip | |
tcp: Check hlist_empty(&tb->bhash2) instead of hlist_empty(&tb->owners).
We use hlist_empty(&tb->owners) to check if the bhash bucket has a socket.
We can check the child bhash2 buckets instead.
For this to work, the bhash2 bucket must be freed before the bhash bucket.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/inet_connection_sock.c')
| -rw-r--r-- | net/ipv4/inet_connection_sock.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c index a31f302c4cc0..1bd13dcd45ae 100644 --- a/net/ipv4/inet_connection_sock.c +++ b/net/ipv4/inet_connection_sock.c @@ -474,7 +474,7 @@ void inet_csk_update_fastreuse(struct inet_bind_bucket *tb, kuid_t uid = sock_i_uid(sk); bool reuse = sk->sk_reuse && sk->sk_state != TCP_LISTEN; - if (hlist_empty(&tb->owners)) { + if (hlist_empty(&tb->bhash2)) { tb->fastreuse = reuse; if (sk->sk_reuseport) { tb->fastreuseport = FASTREUSEPORT_ANY; @@ -566,7 +566,7 @@ int inet_csk_get_port(struct sock *sk, unsigned short snum) } if (!found_port) { - if (!hlist_empty(&tb->owners)) { + if (!hlist_empty(&tb->bhash2)) { if (sk->sk_reuse == SK_FORCE_REUSE || (tb->fastreuse > 0 && reuse) || sk_reuseport_match(tb, sk)) @@ -608,11 +608,10 @@ success: fail_unlock: if (ret) { + if (bhash2_created) + inet_bind2_bucket_destroy(hinfo->bind2_bucket_cachep, tb2); if (bhash_created) inet_bind_bucket_destroy(hinfo->bind_bucket_cachep, tb); - if (bhash2_created) - inet_bind2_bucket_destroy(hinfo->bind2_bucket_cachep, - tb2); } if (head2_lock_acquired) spin_unlock(&head2->lock); |