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authorEric Dumazet <eric.dumazet@gmail.com>2012-01-25 05:44:20 +0100
committerDavid S. Miller <davem@davemloft.net>2012-01-26 19:51:00 +0100
commit09e9b813d34d9a09d64a64580a9959d8bae1f4f5 (patch)
tree5e8616336466d89c10da8a52166213d345cbe060 /net/ipv4/tcp_output.c
parentbe2net: allocate more headroom in incoming skbs (diff)
downloadlinux-09e9b813d34d9a09d64a64580a9959d8bae1f4f5.tar.xz
linux-09e9b813d34d9a09d64a64580a9959d8bae1f4f5.zip
tcp: add LINUX_MIB_TCPRETRANSFAIL counter
It might be useful to get a counter of failed tcp_retransmit_skb() calls. Reported-by: Satoru Moriya <satoru.moriya@hds.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_output.c')
-rw-r--r--net/ipv4/tcp_output.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 8c8de2780c7a..561550ab3c30 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2308,8 +2308,10 @@ begin_fwd:
if (sacked & (TCPCB_SACKED_ACKED|TCPCB_SACKED_RETRANS))
continue;
- if (tcp_retransmit_skb(sk, skb))
+ if (tcp_retransmit_skb(sk, skb)) {
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPRETRANSFAIL);
return;
+ }
NET_INC_STATS_BH(sock_net(sk), mib_idx);
if (inet_csk(sk)->icsk_ca_state == TCP_CA_Recovery)