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igmp: Namespaceify igmp_max_memberships sysctl knob

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Signed-off-by: Nikolay Borisov <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Nikolay Borisov 2016-02-08 23:29:21 +02:00 • committed by David S. Miller
commit 815c527007
5 changed files with 12 additions and 11 deletions
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4
net/ipv4/igmp.c
View file

@ -107,7 +107,6 @@
#include <linux/seq_file.h>
#endif
#define IP_MAX_MEMBERSHIPS 20
#define IP_MAX_MSF 10
/* IGMP reports for link-local multicast groups are enabled by default */
@ -1727,7 +1726,6 @@ static struct in_device *ip_mc_find_dev(struct net *net, struct ip_mreqn *imr)
/*
* Join a socket to a group
*/
int sysctl_igmp_max_memberships __read_mostly = IP_MAX_MEMBERSHIPS;
int sysctl_igmp_max_msf __read_mostly = IP_MAX_MSF;
#ifdef CONFIG_IP_MULTICAST
int sysctl_igmp_qrv __read_mostly = IGMP_QUERY_ROBUSTNESS_VARIABLE;
@ -2074,7 +2072,7 @@ int ip_mc_join_group(struct sock *sk, struct ip_mreqn *imr)
count++;
}
err = -ENOBUFS;
if (count >= sysctl_igmp_max_memberships)
if (count >= net->ipv4.sysctl_igmp_max_memberships)
goto done;
iml = sock_kmalloc(sk, sizeof(*iml), GFP_KERNEL);
if (!iml)

14
net/ipv4/sysctl_net_ipv4.c
View file

@ -367,13 +367,6 @@ static struct ctl_table ipv4_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "igmp_max_memberships",
.data = &sysctl_igmp_max_memberships,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "igmp_max_msf",
.data = &sysctl_igmp_max_msf,
@ -871,6 +864,13 @@ static struct ctl_table ipv4_net_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "igmp_max_memberships",
.data = &init_net.ipv4.sysctl_igmp_max_memberships,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "tcp_keepalive_time",
.data = &init_net.ipv4.sysctl_tcp_keepalive_time,

2
net/ipv4/tcp_ipv4.c
View file

@ -2399,6 +2399,8 @@ static int __net_init tcp_sk_init(struct net *net)
net->ipv4.sysctl_tcp_fin_timeout = TCP_FIN_TIMEOUT;
net->ipv4.sysctl_tcp_notsent_lowat = UINT_MAX;
net->ipv4.sysctl_igmp_max_memberships = 20;
return 0;
fail:
tcp_sk_exit(net);