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OpenCloudOS-Kernel
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tcp: move mdev_us init to tcp_disconnect() 

If we make sure a listener always has its mdev_us
field set to TCP_TIMEOUT_INIT, we do not need to rewrite
this field after a new clone is created.

tcp_disconnect() is very seldom used in real applications.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2019-01-17 11:23:36 -08:00 committed by David S. Miller
parent a0070e463f
commit b9e2e689aa
2 changed files with 1 additions and 1 deletions
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1
net/ipv4/tcp.c
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@ -2572,6 +2572,7 @@ int tcp_disconnect(struct sock *sk, int flags)
sk->sk_shutdown = 0;
sock_reset_flag(sk, SOCK_DONE);
tp->srtt_us = 0;
tp->mdev_us = jiffies_to_usecs(TCP_TIMEOUT_INIT);
tp->rcv_rtt_last_tsecr = 0;
tp->write_seq += tp->max_window + 2;
if (tp->write_seq == 0)

1
net/ipv4/tcp_minisocks.c
View File

@ -479,7 +479,6 @@ struct sock *tcp_create_openreq_child(const struct sock *sk,
tcp_init_wl(newtp, treq->rcv_isn);
newtp->mdev_us = jiffies_to_usecs(TCP_TIMEOUT_INIT);
minmax_reset(&newtp->rtt_min, tcp_jiffies32, ~0U);
newicsk->icsk_ack.lrcvtime = tcp_jiffies32;