diff options
| author |   Eric Dumazet <edumazet@google.com> | 2018-05-17 14:47:29 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-05-18 11:40:27 -0400 |
| commit | 9c21d2fc41c0c8930600c9dd83eadac2e336fcfa (patch) | |
| tree | d2a2dfb4516b8fb0d8fe13e7c3bfa0eda2064d0d /net/ipv4/tcp_input.c | |
| parent | tcp: add tcp_comp_sack_delay_ns sysctl (diff) | |
| download | linux-dev-9c21d2fc41c0c8930600c9dd83eadac2e336fcfa.tar.xz linux-dev-9c21d2fc41c0c8930600c9dd83eadac2e336fcfa.zip | |
tcp: add tcp_comp_sack_nr sysctl
This per netns sysctl allows for TCP SACK compression fine-tuning.
This limits number of SACK that can be compressed.
Using 0 disables SACK compression.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_input.c')
| -rw-r--r-- | net/ipv4/tcp_input.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 6a1dae38c955..aebb29ab2fdf 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -5106,7 +5106,8 @@ send_now: return; } - if (!tcp_is_sack(tp) || tp->compressed_ack >= 44) + if (!tcp_is_sack(tp) || + tp->compressed_ack >= sock_net(sk)->ipv4.sysctl_tcp_comp_sack_nr) goto send_now; tp->compressed_ack++; |