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authorEric Dumazet <edumazet@google.com>2018-05-17 14:47:28 -0700
committerDavid S. Miller <davem@davemloft.net>2018-05-18 11:40:27 -0400
commit6d82aa242092d73c6d2e210cfaf0ebfbe6de1ccf (patch)
tree5babdd50e69dd7ab9b6db82f3b665d9c80be6bad /net/ipv4/sysctl_net_ipv4.c
parenttcp: add TCPAckCompressed SNMP counter (diff)
downloadlinux-dev-6d82aa242092d73c6d2e210cfaf0ebfbe6de1ccf.tar.xz
linux-dev-6d82aa242092d73c6d2e210cfaf0ebfbe6de1ccf.zip
tcp: add tcp_comp_sack_delay_ns sysctl
This per netns sysctl allows for TCP SACK compression fine-tuning. Its default value is 1,000,000, or 1 ms to meet TSO autosizing period. 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 '')
-rw-r--r--net/ipv4/sysctl_net_ipv4.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 4b195bac8ac0..11fbfdc1566e 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -1152,6 +1152,13 @@ static struct ctl_table ipv4_net_table[] = {
.extra1 = &one,
},
{
+ .procname = "tcp_comp_sack_delay_ns",
+ .data = &init_net.ipv4.sysctl_tcp_comp_sack_delay_ns,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = proc_doulongvec_minmax,
+ },
+ {
.procname = "udp_rmem_min",
.data = &init_net.ipv4.sysctl_udp_rmem_min,
.maxlen = sizeof(init_net.ipv4.sysctl_udp_rmem_min),