lkml.org 
[lkml]   [2016]   [Jan]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 8/9] ipv4: Namespaceify tcp_fin_timeout sysctl knob
Date
Signed-off-by: Nikolay Borisov <kernel@kyup.com>
---
include/net/netns/ipv4.h | 1 +
include/net/tcp.h | 3 +--
net/ipv4/sysctl_net_ipv4.c | 14 +++++++-------
net/ipv4/tcp.c | 7 +++----
net/ipv4/tcp_ipv4.c | 1 +
5 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index 6903335fbe3a..a1caddadecc2 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -102,6 +102,7 @@ struct netns_ipv4 {
int sysctl_tcp_retries1;
int sysctl_tcp_retries2;
int sysctl_tcp_orphan_retries;
+ int sysctl_tcp_fin_timeout;

struct ping_group_range ping_group_range;

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 606a0a1a6d15..f8c3f75e6c99 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -239,7 +239,6 @@ extern struct inet_timewait_death_row tcp_death_row;
extern int sysctl_tcp_timestamps;
extern int sysctl_tcp_window_scaling;
extern int sysctl_tcp_sack;
-extern int sysctl_tcp_fin_timeout;
extern int sysctl_tcp_fastopen;
extern int sysctl_tcp_retrans_collapse;
extern int sysctl_tcp_stdurg;
@@ -1245,7 +1244,7 @@ static inline u32 keepalive_time_elapsed(const struct tcp_sock *tp)

static inline int tcp_fin_time(const struct sock *sk)
{
- int fin_timeout = tcp_sk(sk)->linger2 ? : sysctl_tcp_fin_timeout;
+ int fin_timeout = tcp_sk(sk)->linger2 ? : sock_net(sk)->ipv4.sysctl_tcp_fin_timeout;
const int rto = inet_csk(sk)->icsk_rto;

if (fin_timeout < (rto << 2) - (rto >> 1))
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index e866e9fe6d84..20e086f88438 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -321,13 +321,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .procname = "tcp_fin_timeout",
- .data = &sysctl_tcp_fin_timeout,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_jiffies,
- },
- {
.procname = "tcp_fastopen",
.data = &sysctl_tcp_fastopen,
.maxlen = sizeof(int),
@@ -950,6 +943,13 @@ static struct ctl_table ipv4_net_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec
},
+ {
+ .procname = "tcp_fin_timeout",
+ .data = &init_net.ipv4.sysctl_tcp_fin_timeout,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_jiffies,
+ },
{ }
};

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index d0547395d81d..ad903790c0a4 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -281,8 +281,6 @@
#include <asm/ioctls.h>
#include <net/busy_poll.h>

-int sysctl_tcp_fin_timeout __read_mostly = TCP_FIN_TIMEOUT;
-
int sysctl_tcp_min_tso_segs __read_mostly = 2;

int sysctl_tcp_autocorking __read_mostly = 1;
@@ -2324,6 +2322,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
{
struct tcp_sock *tp = tcp_sk(sk);
struct inet_connection_sock *icsk = inet_csk(sk);
+ struct net *net = sock_net(sk);
int val;
int err = 0;

@@ -2520,7 +2519,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
case TCP_LINGER2:
if (val < 0)
tp->linger2 = -1;
- else if (val > sysctl_tcp_fin_timeout / HZ)
+ else if (val > net->ipv4.sysctl_tcp_fin_timeout / HZ)
tp->linger2 = 0;
else
tp->linger2 = val * HZ;
@@ -2762,7 +2761,7 @@ static int do_tcp_getsockopt(struct sock *sk, int level,
case TCP_LINGER2:
val = tp->linger2;
if (val >= 0)
- val = (val ? : sysctl_tcp_fin_timeout) / HZ;
+ val = (val ? : net->ipv4.sysctl_tcp_fin_timeout) / HZ;
break;
case TCP_DEFER_ACCEPT:
val = retrans_to_secs(icsk->icsk_accept_queue.rskq_defer_accept,
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index fc4d4ee38012..3c263c00f5ea 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2388,6 +2388,7 @@ static int __net_init tcp_sk_init(struct net *net)
net->ipv4.sysctl_tcp_retries1 = TCP_RETR1;
net->ipv4.sysctl_tcp_retries2 = TCP_RETR2;
net->ipv4.sysctl_tcp_orphan_retries = 0;
+ net->ipv4.sysctl_tcp_fin_timeout = TCP_FIN_TIMEOUT;

return 0;
fail:
--
2.5.0
\
 
 \ /
  Last update: 2016-01-11 11:01    [W:0.050 / U:0.304 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site