diff options
Diffstat (limited to 'net/ipv4')
-rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 10 | ||||
-rw-r--r-- | net/ipv4/tcp_input.c | 3 | ||||
-rw-r--r-- | net/ipv4/tcp_ipv4.c | 1 |
3 files changed, 13 insertions, 1 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index 11fbfdc1566e..d2eed3ddcb0a 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -46,6 +46,7 @@ static int tcp_syn_retries_min = 1; static int tcp_syn_retries_max = MAX_TCP_SYNCNT; static int ip_ping_group_range_min[] = { 0, 0 }; static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX }; +static int comp_sack_nr_max = 255; /* obsolete */ static int sysctl_tcp_low_latency __read_mostly; @@ -1159,6 +1160,15 @@ static struct ctl_table ipv4_net_table[] = { .proc_handler = proc_doulongvec_minmax, }, { + .procname = "tcp_comp_sack_nr", + .data = &init_net.ipv4.sysctl_tcp_comp_sack_nr, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &zero, + .extra2 = &comp_sack_nr_max, + }, + { .procname = "udp_rmem_min", .data = &init_net.ipv4.sysctl_udp_rmem_min, .maxlen = sizeof(init_net.ipv4.sysctl_udp_rmem_min), 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++; diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index a3f4647341db..adbdb503db0c 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -2573,6 +2573,7 @@ static int __net_init tcp_sk_init(struct net *net) sizeof(init_net.ipv4.sysctl_tcp_wmem)); } net->ipv4.sysctl_tcp_comp_sack_delay_ns = NSEC_PER_MSEC; + net->ipv4.sysctl_tcp_comp_sack_nr = 44; net->ipv4.sysctl_tcp_fastopen = TFO_CLIENT_ENABLE; spin_lock_init(&net->ipv4.tcp_fastopen_ctx_lock); net->ipv4.sysctl_tcp_fastopen_blackhole_timeout = 60 * 60; |