[NETNS][IPV6] route6 - Pass the network namespace parameter to rt6_purge_dflt_routers

Add a network namespace parameter to rt6_purge_dflt_routers.  This is
needed to call fib6_get_table with the appropriate network namespace.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/ip6_route.h

@@ -95,7 +95,7 @@ extern struct rt6_info *	rt6_add_dflt_router(struct in6_addr *gwaddr,
 						    struct net_device *dev,
 						    unsigned int pref);
 
-extern void			rt6_purge_dflt_routers(void);
+extern void			rt6_purge_dflt_routers(struct net *net);
 
 extern int			rt6_route_rcv(struct net_device *dev,
 					      u8 *opt, int len,

net/ipv6/addrconf.c

@@ -493,7 +493,7 @@ static void addrconf_fixup_forwarding(struct ctl_table *table, int *p, int old)
 		dev_forward_change((struct inet6_dev *)table->extra1);
 
 	if (*p)
-		rt6_purge_dflt_routers();
+		rt6_purge_dflt_routers(net);
 }
 #endif
 

net/ipv6/route.c

@@ -1697,13 +1697,13 @@ struct rt6_info *rt6_add_dflt_router(struct in6_addr *gwaddr,
 	return rt6_get_dflt_router(gwaddr, dev);
 }
 
-void rt6_purge_dflt_routers(void)
+void rt6_purge_dflt_routers(struct net *net)
 {
 	struct rt6_info *rt;
 	struct fib6_table *table;
 
 	/* NOTE: Keep consistent with rt6_get_dflt_router */
-	table = fib6_get_table(&init_net, RT6_TABLE_DFLT);
+	table = fib6_get_table(net, RT6_TABLE_DFLT);
 	if (table == NULL)
 		return;