diff options
| author |   Rick Jones <rick.jones2@hp.com> | 2015-07-21 16:14:13 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-07-21 22:36:33 -0700 |
| commit | b56ea2985d389a3676638203323ebe22c261b7fe (patch) | |
| tree | b302fea7a9b62c0d8bddf6a9342dfcecf4695a8b /net/ipv4/tcp_input.c | |
| parent | cxgb4: Add debugfs entry to enable backdoor access (diff) | |
| download | linux-dev-b56ea2985d389a3676638203323ebe22c261b7fe.tar.xz linux-dev-b56ea2985d389a3676638203323ebe22c261b7fe.zip | |
net: track success and failure of TCP PMTU probing
Track success and failure of TCP PMTU probing.
Signed-off-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | net/ipv4/tcp_input.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 1578fc2a6f39..cda3ffedadb6 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -2593,6 +2593,7 @@ static void tcp_mtup_probe_failed(struct sock *sk) icsk->icsk_mtup.search_high = icsk->icsk_mtup.probe_size - 1; icsk->icsk_mtup.probe_size = 0; + NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPMTUPFAIL); } static void tcp_mtup_probe_success(struct sock *sk) @@ -2612,6 +2613,7 @@ static void tcp_mtup_probe_success(struct sock *sk) icsk->icsk_mtup.search_low = icsk->icsk_mtup.probe_size; icsk->icsk_mtup.probe_size = 0; tcp_sync_mss(sk, icsk->icsk_pmtu_cookie); + NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPMTUPSUCCESS); } /* Do a simple retransmit without using the backoff mechanisms in |