diff options
| -rw-r--r-- | net/ipv4/tcp_timer.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c index f2a52c11e044..74c70fc1003c 100644 --- a/net/ipv4/tcp_timer.c +++ b/net/ipv4/tcp_timer.c @@ -519,20 +519,23 @@ void tcp_retransmit_timer(struct sock *sk) * we cannot allow such beasts to hang infinitely. */ struct inet_sock *inet = inet_sk(sk); + u32 rtx_delta; + + rtx_delta = tcp_time_stamp(tp) - (tp->retrans_stamp ?: tcp_skb_timestamp(skb)); if (sk->sk_family == AF_INET) { - net_dbg_ratelimited("Peer %pI4:%u/%u unexpectedly shrunk window %u:%u (repaired)\n", - &inet->inet_daddr, - ntohs(inet->inet_dport), - inet->inet_num, - tp->snd_una, tp->snd_nxt); + net_dbg_ratelimited("Probing zero-window on %pI4:%u/%u, seq=%u:%u, recv %ums ago, lasting %ums\n", + &inet->inet_daddr, ntohs(inet->inet_dport), + inet->inet_num, tp->snd_una, tp->snd_nxt, + jiffies_to_msecs(jiffies - tp->rcv_tstamp), + rtx_delta); } #if IS_ENABLED(CONFIG_IPV6) else if (sk->sk_family == AF_INET6) { - net_dbg_ratelimited("Peer %pI6:%u/%u unexpectedly shrunk window %u:%u (repaired)\n", - &sk->sk_v6_daddr, - ntohs(inet->inet_dport), - inet->inet_num, - tp->snd_una, tp->snd_nxt); + net_dbg_ratelimited("Probing zero-window on %pI6:%u/%u, seq=%u:%u, recv %ums ago, lasting %ums\n", + &sk->sk_v6_daddr, ntohs(inet->inet_dport), + inet->inet_num, tp->snd_una, tp->snd_nxt, + jiffies_to_msecs(jiffies - tp->rcv_tstamp), + rtx_delta); } #endif if (tcp_rtx_probe0_timed_out(sk, skb)) { |