diff options
| author | Yuchung Cheng <ycheng@google.com> | 2013-07-22 16:20:46 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-07-22 17:53:42 -0700 |
| commit | 5b08e47caf1f2034a3a5b566bbccc8b0be3961ca (patch) | |
| tree | 5cdd3ad01a4b854c80bad612051ac7ce7140e948 /include/net/tcp.h | |
| parent | 375fe02c91792917aa26d68a87ab110d1937f44e (diff) | |
tcp: prefer packet timing to TS-ECR for RTT
Prefer packet timings to TS-ecr for RTT measurements when both
sources are available. That's because broken middle-boxes and remote
peer can return packets with corrupted TS ECR fields. Similarly most
congestion controls that require RTT signals favor timing-based
sources as well. Also check for bad TS ECR values to avoid RTT
blow-ups. It has happened on production Web servers.
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/tcp.h')
| -rw-r--r-- | include/net/tcp.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index f9777dbede75..c5868471abae 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -591,7 +591,6 @@ extern void tcp_initialize_rcv_mss(struct sock *sk); extern int tcp_mtu_to_mss(struct sock *sk, int pmtu); extern int tcp_mss_to_mtu(struct sock *sk, int mss); extern void tcp_mtup_init(struct sock *sk); -extern void tcp_valid_rtt_meas(struct sock *sk, u32 seq_rtt); extern void tcp_init_buffer_space(struct sock *sk); static inline void tcp_bound_rto(const struct sock *sk) |