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ipv4: Namespecify the tcp_keepalive_intvl sysctl knob

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This is the final part required to namespaceify the tcp
keep alive mechanism.

Signed-off-by: Nikolay Borisov <kernel@kyup.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Borisov 2016-01-07 16:38:45 +02:00 committed by David S. Miller
parent 9bd6861bd4
commit b840d15d39
5 changed files with 12 additions and 10 deletions
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1
include/net/netns/ipv4.h
View File

@ -96,6 +96,7 @@ struct netns_ipv4 {
int sysctl_tcp_keepalive_time;
int sysctl_tcp_keepalive_probes;
int sysctl_tcp_keepalive_intvl;
struct ping_group_range ping_group_range;

5
include/net/tcp.h
View File

@ -240,7 +240,6 @@ 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_keepalive_intvl;
extern int sysctl_tcp_syn_retries;
extern int sysctl_tcp_synack_retries;
extern int sysctl_tcp_retries1;
@ -1223,7 +1222,9 @@ void tcp_enter_memory_pressure(struct sock *sk);
static inline int keepalive_intvl_when(const struct tcp_sock *tp)
{
return tp->keepalive_intvl ? : sysctl_tcp_keepalive_intvl;
struct net *net = sock_net((struct sock *)tp);
return tp->keepalive_intvl ? : net->ipv4.sysctl_tcp_keepalive_intvl;
}
static inline int keepalive_time_when(const struct tcp_sock *tp)

14
net/ipv4/sysctl_net_ipv4.c
View File

@ -336,13 +336,6 @@ static struct ctl_table ipv4_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "tcp_keepalive_intvl",
.data = &sysctl_tcp_keepalive_intvl,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "tcp_retries1",
.data = &sysctl_tcp_retries1,
@ -961,6 +954,13 @@ static struct ctl_table ipv4_net_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "tcp_keepalive_intvl",
.data = &init_net.ipv4.sysctl_tcp_keepalive_intvl,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{ }
};

1
net/ipv4/tcp_ipv4.c
View File

@ -2387,6 +2387,7 @@ static int __net_init tcp_sk_init(struct net *net)
net->ipv4.sysctl_tcp_keepalive_time = TCP_KEEPALIVE_TIME;
net->ipv4.sysctl_tcp_keepalive_probes = TCP_KEEPALIVE_PROBES;
net->ipv4.sysctl_tcp_keepalive_intvl = TCP_KEEPALIVE_INTVL;
return 0;
fail:

1
net/ipv4/tcp_timer.c
View File

@ -24,7 +24,6 @@
int sysctl_tcp_syn_retries __read_mostly = TCP_SYN_RETRIES;
int sysctl_tcp_synack_retries __read_mostly = TCP_SYNACK_RETRIES;
int sysctl_tcp_keepalive_intvl __read_mostly = TCP_KEEPALIVE_INTVL;
int sysctl_tcp_retries1 __read_mostly = TCP_RETR1;
int sysctl_tcp_retries2 __read_mostly = TCP_RETR2;
int sysctl_tcp_orphan_retries __read_mostly;