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| author | Eric Dumazet <edumazet@google.com> | 2017-03-22 08:10:21 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-03-22 15:39:42 -0700 |
| commit | 15bb7745e94a665caf42bfaabf0ce062845b533b (patch) | |
| tree | 47e25470f2814b8baa614b09409747ebc8104359 | |
| parent | 1d2a6a5e4bf2921531071fcff8538623dce74efa (diff) | |
| download | linux-15bb7745e94a665caf42bfaabf0ce062845b533b.tar.gz linux-15bb7745e94a665caf42bfaabf0ce062845b533b.tar.bz2 linux-15bb7745e94a665caf42bfaabf0ce062845b533b.zip | |
tcp: initialize icsk_ack.lrcvtime at session start time
icsk_ack.lrcvtime has a 0 value at socket creation time.
tcpi_last_data_recv can have bogus value if no payload is ever received.
This patch initializes icsk_ack.lrcvtime for active sessions
in tcp_finish_connect(), and for passive sessions in
tcp_create_openreq_child()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/tcp_input.c | 2 | ||||
| -rw-r--r-- | net/ipv4/tcp_minisocks.c | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 39c393cc0fd3..c43119726a62 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -5541,6 +5541,7 @@ void tcp_finish_connect(struct sock *sk, struct sk_buff *skb) struct inet_connection_sock *icsk = inet_csk(sk); tcp_set_state(sk, TCP_ESTABLISHED); + icsk->icsk_ack.lrcvtime = tcp_time_stamp; if (skb) { icsk->icsk_af_ops->sk_rx_dst_set(sk, skb); @@ -5759,7 +5760,6 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb, * to stand against the temptation 8) --ANK */ inet_csk_schedule_ack(sk); - icsk->icsk_ack.lrcvtime = tcp_time_stamp; tcp_enter_quickack_mode(sk); inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, TCP_DELACK_MAX, TCP_RTO_MAX); diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c index 7e16243cdb58..65c0f3d13eca 100644 --- a/net/ipv4/tcp_minisocks.c +++ b/net/ipv4/tcp_minisocks.c @@ -460,6 +460,7 @@ struct sock *tcp_create_openreq_child(const struct sock *sk, newtp->mdev_us = jiffies_to_usecs(TCP_TIMEOUT_INIT); minmax_reset(&newtp->rtt_min, tcp_time_stamp, ~0U); newicsk->icsk_rto = TCP_TIMEOUT_INIT; + newicsk->icsk_ack.lrcvtime = tcp_time_stamp; newtp->packets_out = 0; newtp->retrans_out = 0; |