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authorEric Dumazet <edumazet@google.com>2017-10-26 21:55:07 -0700
committerDavid S. Miller <davem@davemloft.net>2017-10-27 16:35:43 +0900
commit6496f6bde0c323fba5e8c5b5cbf3a7bf28dad7ed (patch)
treee38381a236d932f7cbf2f45c37457639ab6e40de /net/ipv4
parentc6e218035913e14952b04ceecf1a543205106fdb (diff)
tcp: Namespace-ify sysctl_tcp_dsack
Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/sysctl_net_ipv4.c14
-rw-r--r--net/ipv4/tcp_input.c5
-rw-r--r--net/ipv4/tcp_ipv4.c1
3 files changed, 10 insertions, 10 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 18cd228a2069..7652a9c2a65d 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -415,13 +415,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec_jiffies,
},
{
- .procname = "tcp_dsack",
- .data = &sysctl_tcp_dsack,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec
- },
- {
.procname = "tcp_mem",
.maxlen = sizeof(sysctl_tcp_mem),
.data = &sysctl_tcp_mem,
@@ -1145,6 +1138,13 @@ static struct ctl_table ipv4_net_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec
},
+ {
+ .procname = "tcp_dsack",
+ .data = &init_net.ipv4.sysctl_tcp_dsack,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
{ }
};
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index c118657f06ee..fd77037ac800 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -79,7 +79,6 @@
#include <linux/unaligned/access_ok.h>
#include <linux/static_key.h>
-int sysctl_tcp_dsack __read_mostly = 1;
int sysctl_tcp_app_win __read_mostly = 31;
int sysctl_tcp_adv_win_scale __read_mostly = 1;
EXPORT_SYMBOL(sysctl_tcp_adv_win_scale);
@@ -4150,7 +4149,7 @@ static void tcp_dsack_set(struct sock *sk, u32 seq, u32 end_seq)
{
struct tcp_sock *tp = tcp_sk(sk);
- if (tcp_is_sack(tp) && sysctl_tcp_dsack) {
+ if (tcp_is_sack(tp) && sock_net(sk)->ipv4.sysctl_tcp_dsack) {
int mib_idx;
if (before(seq, tp->rcv_nxt))
@@ -4185,7 +4184,7 @@ static void tcp_send_dupack(struct sock *sk, const struct sk_buff *skb)
NET_INC_STATS(sock_net(sk), LINUX_MIB_DELAYEDACKLOST);
tcp_enter_quickack_mode(sk);
- if (tcp_is_sack(tp) && sysctl_tcp_dsack) {
+ if (tcp_is_sack(tp) && sock_net(sk)->ipv4.sysctl_tcp_dsack) {
u32 end_seq = TCP_SKB_CB(skb)->end_seq;
if (after(TCP_SKB_CB(skb)->end_seq, tp->rcv_nxt))
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index c379a242abb3..d9d4d191e8f3 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2489,6 +2489,7 @@ static int __net_init tcp_sk_init(struct net *net)
net->ipv4.sysctl_tcp_slow_start_after_idle = 1; /* By default, RFC2861 behavior. */
net->ipv4.sysctl_tcp_retrans_collapse = 1;
net->ipv4.sysctl_tcp_max_reordering = 300;
+ net->ipv4.sysctl_tcp_dsack = 1;
net->ipv4.sysctl_tcp_fastopen = TFO_CLIENT_ENABLE;
spin_lock_init(&net->ipv4.tcp_fastopen_ctx_lock);