diff options
author | Eric Dumazet <edumazet@google.com> | 2017-05-16 14:00:00 -0700 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2017-05-17 16:06:01 -0400 |
commit | 385e20706facd376f27863bd55b7cc7720d3f27b (patch) | |
tree | b3e6e53158d3348cd6d6b7b473adfe2f1c5a8d6c /net/ipv4/tcp_ipv4.c | |
parent | 9d4f97f97bb8adc47f569d995402c33de9a4fa19 (diff) |
tcp: use tp->tcp_mstamp in output path
Idea is to later convert tp->tcp_mstamp to a full u64 counter
using usec resolution, so that we can later have fine
grained TCP TS clock (RFC 7323), regardless of HZ value.
We try to refresh tp->tcp_mstamp only when necessary.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
-rw-r--r-- | net/ipv4/tcp_ipv4.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 5ab2aac5ca19..d8fe25db79f2 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -483,6 +483,7 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info) skb = tcp_write_queue_head(sk); BUG_ON(!skb); + skb_mstamp_get(&tp->tcp_mstamp); remaining = icsk->icsk_rto - min(icsk->icsk_rto, tcp_time_stamp - tcp_skb_timestamp(skb)); |