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igmp: Namespaceify igmp_max_msf sysctl knob 

Signed-off-by: Nikolay Borisov <kernel@kyup.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Borisov 2016-02-08 23:29:22 +02:00 committed by David S. Miller
parent 815c527007
commit 166b6b2d6f
6 changed files with 13 additions and 14 deletions
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1
include/linux/igmp.h
View File

@ -38,7 +38,6 @@ static inline struct igmpv3_query *
}
extern int sysctl_igmp_llm_reports;
extern int sysctl_igmp_max_msf;
extern int sysctl_igmp_qrv;
struct ip_sf_socklist {

1
include/net/netns/ipv4.h
View File

@ -109,6 +109,7 @@ struct netns_ipv4 {
unsigned int sysctl_tcp_notsent_lowat;
int sysctl_igmp_max_memberships;
int sysctl_igmp_max_msf;
struct ping_group_range ping_group_range;

5
net/ipv4/igmp.c
View File

@ -107,8 +107,6 @@
#include <linux/seq_file.h>
#endif
#define IP_MAX_MSF 10
/* IGMP reports for link-local multicast groups are enabled by default */
int sysctl_igmp_llm_reports __read_mostly = 1;
@ -1726,7 +1724,6 @@ 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_msf __read_mostly = IP_MAX_MSF;
#ifdef CONFIG_IP_MULTICAST
int sysctl_igmp_qrv __read_mostly = IGMP_QUERY_ROBUSTNESS_VARIABLE;
#endif
@ -2244,7 +2241,7 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct
}
/* else, add a new source to the filter */
if (psl && psl->sl_count >= sysctl_igmp_max_msf) {
if (psl && psl->sl_count >= net->ipv4.sysctl_igmp_max_msf) {
err = -ENOBUFS;
goto done;
}

5
net/ipv4/ip_sockglue.c
View File

@ -571,6 +571,7 @@ static int do_ip_setsockopt(struct sock *sk, int level,
int optname, char __user *optval, unsigned int optlen)
{
struct inet_sock *inet = inet_sk(sk);
struct net *net = sock_net(sk);
int val = 0, err;
bool needs_rtnl = setsockopt_needs_rtnl(optname);
@ -910,7 +911,7 @@ static int do_ip_setsockopt(struct sock *sk, int level,
}
/* numsrc >= (1G-4) overflow in 32 bits */
if (msf->imsf_numsrc >= 0x3ffffffcU ||
msf->imsf_numsrc > sysctl_igmp_max_msf) {
msf->imsf_numsrc > net->ipv4.sysctl_igmp_max_msf) {
kfree(msf);
err = -ENOBUFS;
break;
@ -1065,7 +1066,7 @@ static int do_ip_setsockopt(struct sock *sk, int level,
/* numsrc >= (4G-140)/128 overflow in 32 bits */
if (gsf->gf_numsrc >= 0x1ffffff ||
gsf->gf_numsrc > sysctl_igmp_max_msf) {
gsf->gf_numsrc > net->ipv4.sysctl_igmp_max_msf) {
err = -ENOBUFS;
goto mc_msf_out;
}

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

1
net/ipv4/tcp_ipv4.c
View File

@ -2400,6 +2400,7 @@ static int __net_init tcp_sk_init(struct net *net)
net->ipv4.sysctl_tcp_notsent_lowat = UINT_MAX;
net->ipv4.sysctl_igmp_max_memberships = 20;
net->ipv4.sysctl_igmp_max_msf = 10;
return 0;
fail: