commit c26e91f8b9b8e1fd252e07c1f60e50220cd7ebab
author Eric Dumazet <edumazet@google.com> Fri Oct 27 07:47:32 2017 -0700
committer David S. Miller <davem@davemloft.net> Sat Oct 28 19:24:39 2017 +0900
tree 5f0d0b02bde533de08ef07d5e670f0815be84d3e
parent 23a7102a2d1068508fa2a0ce593a0df7f8fdc0ac

tcp: Namespace-ify sysctl_tcp_pacing_ca_ratio

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/sysctl_net_ipv4.c

diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 7f0dba8..4602af6 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -493,15 +493,6 @@ static struct ctl_table ipv4_table[] = {
 		.proc_handler   = proc_allowed_congestion_control,
 	},
 	{
-		.procname	= "tcp_pacing_ca_ratio",
-		.data		= &sysctl_tcp_pacing_ca_ratio,
-		.maxlen		= sizeof(int),
-		.mode		= 0644,
-		.proc_handler	= proc_dointvec_minmax,
-		.extra1		= &zero,
-		.extra2		= &thousand,
-	},
-	{
 		.procname	= "tcp_available_ulp",
 		.maxlen		= TCP_ULP_BUF_MAX,
 		.mode		= 0444,
@@ -1145,6 +1136,15 @@ static struct ctl_table ipv4_net_table[] = {
 		.extra1		= &zero,
 		.extra2		= &thousand,
 	},
+	{
+		.procname	= "tcp_pacing_ca_ratio",
+		.data		= &init_net.ipv4.sysctl_tcp_pacing_ca_ratio,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec_minmax,
+		.extra1		= &zero,
+		.extra2		= &thousand,
+	},
 	{ }
 };
 

net/ipv4/tcp_input.c

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 29539d3..21c358c 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -767,8 +767,6 @@ static void tcp_rtt_estimator(struct sock *sk, long mrtt_us)
 	tp->srtt_us = max(1U, srtt);
 }
 
-int sysctl_tcp_pacing_ca_ratio __read_mostly = 120;
-
 static void tcp_update_pacing_rate(struct sock *sk)
 {
 	const struct tcp_sock *tp = tcp_sk(sk);
@@ -788,7 +786,7 @@ static void tcp_update_pacing_rate(struct sock *sk)
 	if (tp->snd_cwnd < tp->snd_ssthresh / 2)
 		rate *= sock_net(sk)->ipv4.sysctl_tcp_pacing_ss_ratio;
 	else
-		rate *= sysctl_tcp_pacing_ca_ratio;
+		rate *= sock_net(sk)->ipv4.sysctl_tcp_pacing_ca_ratio;
 
 	rate *= max(tp->snd_cwnd, tp->packets_out);
 

net/ipv4/tcp_ipv4.c

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 1d8fc66..7c1dae6 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2508,6 +2508,7 @@ static int __net_init tcp_sk_init(struct net *net)
 	net->ipv4.sysctl_tcp_autocorking = 1;
 	net->ipv4.sysctl_tcp_invalid_ratelimit = HZ/2;
 	net->ipv4.sysctl_tcp_pacing_ss_ratio = 200;
+	net->ipv4.sysctl_tcp_pacing_ca_ratio = 120;
 
 	net->ipv4.sysctl_tcp_fastopen = TFO_CLIENT_ENABLE;
 	spin_lock_init(&net->ipv4.tcp_fastopen_ctx_lock);