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authorEric Dumazet <edumazet@google.com>2017-10-26 21:21:40 -0700
committerDavid S. Miller <davem@davemloft.net>2017-10-28 19:08:04 +0900
commitee1836aec4f5a977c1699a311db4d9027ef21ac8 (patch)
tree9e8261b2d52181178fba19ae314221e4235cc062
parent63b9ab65bd76e5de6479bb14b4014b64aa1a317a (diff)
downloadlinux-stericsson-ee1836aec4f5a977c1699a311db4d9027ef21ac8.tar.gz
tcp: refresh tp timestamp before tcp_mtu_probe()
In the unlikely event tcp_mtu_probe() is sending a packet, we want tp->tcp_mstamp being as accurate as possible. This means we need to call tcp_mstamp_refresh() a bit earlier in tcp_write_xmit(). Fixes: 385e20706fac ("tcp: use tp->tcp_mstamp in output path") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv4/tcp_output.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 1151870018e3..ae60dd3faed0 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2239,6 +2239,7 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,
sent_pkts = 0;
+ tcp_mstamp_refresh(tp);
if (!push_one) {
/* Do MTU probing. */
result = tcp_mtu_probe(sk);
@@ -2250,7 +2251,6 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,
}
max_segs = tcp_tso_segs(sk, mss_now);
- tcp_mstamp_refresh(tp);
while ((skb = tcp_send_head(sk))) {
unsigned int limit;