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authorKuniyuki Iwashima <kuniyu@amazon.co.jp>2020-03-10 11:05:24 +0300
committerDavid S. Miller <davem@davemloft.net>2020-03-12 22:08:09 +0300
commit16f6c2518f9e0347eb54d368473ebd0904ac4298 (patch)
treee4319228459e2b53f11fa0a0e2a80dd2dea093cc /net/ipv4
parentaf91fd7e17f12119763b95ccf526bce4b0693144 (diff)
downloadlinux-16f6c2518f9e0347eb54d368473ebd0904ac4298.tar.xz
tcp: Remove unnecessary conditions in inet_csk_bind_conflict().
When we get an ephemeral port, the relax is false, so the SO_REUSEADDR conditions may be evaluated twice. We do not need to check the conditions again. Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/inet_connection_sock.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index a4db79b1b643..2e9549f49a82 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -146,17 +146,15 @@ static int inet_csk_bind_conflict(const struct sock *sk,
(!sk->sk_bound_dev_if ||
!sk2->sk_bound_dev_if ||
sk->sk_bound_dev_if == sk2->sk_bound_dev_if)) {
- if ((!reuse || !sk2->sk_reuse ||
- sk2->sk_state == TCP_LISTEN) &&
- (!reuseport || !sk2->sk_reuseport ||
- rcu_access_pointer(sk->sk_reuseport_cb) ||
- (sk2->sk_state != TCP_TIME_WAIT &&
- !uid_eq(uid, sock_i_uid(sk2))))) {
- if (inet_rcv_saddr_equal(sk, sk2, true))
- break;
- }
- if (!relax && reuse && sk2->sk_reuse &&
+ if (reuse && sk2->sk_reuse &&
sk2->sk_state != TCP_LISTEN) {
+ if (!relax &&
+ inet_rcv_saddr_equal(sk, sk2, true))
+ break;
+ } else if (!reuseport || !sk2->sk_reuseport ||
+ rcu_access_pointer(sk->sk_reuseport_cb) ||
+ (sk2->sk_state != TCP_TIME_WAIT &&
+ !uid_eq(uid, sock_i_uid(sk2)))) {
if (inet_rcv_saddr_equal(sk, sk2, true))
break;
}