diff options
| author |   Yuchung Cheng <ycheng@google.com> | 2017-01-12 22:11:41 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-01-13 22:37:16 -0500 |
| commit | 4a7f6009441144783e5925551c72e3f2e1b0839b (patch) | |
| tree | 41e521496a3c78abfcabb41f4a20f4f8c535887e /net/ipv4/sysctl_net_ipv4.c | |
| parent | tcp: remove RFC4653 NCR (diff) | |
| download | linux-dev-4a7f6009441144783e5925551c72e3f2e1b0839b.tar.xz linux-dev-4a7f6009441144783e5925551c72e3f2e1b0839b.zip | |
tcp: remove thin_dupack feature
Thin stream DUPACK is to start fast recovery on only one DUPACK
provided the connection is a thin stream (i.e., low inflight). But
this older feature is now subsumed with RACK. If a connection
receives only a single DUPACK, RACK would arm a reordering timer
and soon starts fast recovery instead of timeout if no further
ACKs are received.
The socket option (THIN_DUPACK) is kept as a nop for compatibility.
Note that this patch does not change another thin-stream feature
which enables linear RTO. Although it might be good to generalize
that in the future (i.e., linear RTO for the first say 3 retries).
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/sysctl_net_ipv4.c')
| -rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index 0f2d37e8e983..c8d283615c6f 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -537,13 +537,6 @@ static struct ctl_table ipv4_table[] = { .proc_handler = proc_dointvec }, { - .procname = "tcp_thin_dupack", - .data = &sysctl_tcp_thin_dupack, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec - }, - { .procname = "tcp_early_retrans", .data = &sysctl_tcp_early_retrans, .maxlen = sizeof(int), |