tcp: account all retransmit failures
Change snmp RETRANSFAILS stat to include timeout retransmit failures
in addition to other loss recoveries.
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 3d60949..92fde8d 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2407,6 +2407,8 @@
* see tcp_input.c tcp_sacktag_write_queue().
*/
TCP_SKB_CB(skb)->ack_seq = tp->snd_nxt;
+ } else {
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPRETRANSFAIL);
}
return err;
}
@@ -2528,10 +2530,9 @@
if (sacked & (TCPCB_SACKED_ACKED|TCPCB_SACKED_RETRANS))
continue;
- if (tcp_retransmit_skb(sk, skb)) {
- NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPRETRANSFAIL);
+ if (tcp_retransmit_skb(sk, skb))
return;
- }
+
NET_INC_STATS_BH(sock_net(sk), mib_idx);
if (tcp_in_cwnd_reduction(sk))