From 815c52700746cdcc0874a33390bac334a4b90107 Mon Sep 17 00:00:00 2001 From: Nikolay Borisov Date: Mon, 8 Feb 2016 23:29:21 +0200 Subject: [PATCH] igmp: Namespaceify igmp_max_memberships sysctl knob Signed-off-by: Nikolay Borisov Signed-off-by: David S. Miller --- include/linux/igmp.h | 1 - include/net/netns/ipv4.h | 2 ++ net/ipv4/igmp.c | 4 +--- net/ipv4/sysctl_net_ipv4.c | 14 +++++++------- net/ipv4/tcp_ipv4.c | 2 ++ 5 files changed, 12 insertions(+), 11 deletions(-) diff --git a/include/linux/igmp.h b/include/linux/igmp.h index 9c9de11549a7..57d6d06ce0b3 100644 --- a/include/linux/igmp.h +++ b/include/linux/igmp.h @@ -38,7 +38,6 @@ static inline struct igmpv3_query * } extern int sysctl_igmp_llm_reports; -extern int sysctl_igmp_max_memberships; extern int sysctl_igmp_max_msf; extern int sysctl_igmp_qrv; diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h index 4d6ec3f6fafe..759cf624eec2 100644 --- a/include/net/netns/ipv4.h +++ b/include/net/netns/ipv4.h @@ -108,6 +108,8 @@ struct netns_ipv4 { int sysctl_tcp_fin_timeout; unsigned int sysctl_tcp_notsent_lowat; + int sysctl_igmp_max_memberships; + struct ping_group_range ping_group_range; atomic_t dev_addr_genid; diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index 05e4cba14162..5b86257c9d6b 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -107,7 +107,6 @@ #include #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) diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index 44bb59824267..6ea3dbb96db4 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -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, diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 3f872a6bc274..4b203789900b 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -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); -- 2.39.5