igmp: Namespaceify igmp_max_msf sysctl knob

Signed-off-by: Nikolay Borisov <kernel@kyup.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 5b86257..6da2e46 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -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 @@
 /*
  *	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 @@
 	}
 	/* 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;
 	}