netns: ipmr: enable namespace support in ipv4 multicast routing code
This last patch makes the appropriate changes to use and propagate the
network namespace where needed in IPv4 multicast routing code.
This consists mainly in replacing all the remaining init_net occurences
with current netns pointer retrieved from sockets, net devices or
mfc_caches depending on the routines' contexts.
Some routines receive a new 'struct net' parameter to propagate the current
netns:
* vif_add/vif_delete
* ipmr_new_tunnel
* mroute_clean_tables
* ipmr_cache_find
* ipmr_cache_report
* ipmr_cache_unresolved
* ipmr_mfc_add/ipmr_mfc_delete
* ipmr_get_route
* rt_fill_info (in route.c)
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 97f7115..6a9e204 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2779,7 +2779,8 @@
return ip_route_output_flow(net, rp, flp, NULL, 0);
}
-static int rt_fill_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
+static int rt_fill_info(struct net *net,
+ struct sk_buff *skb, u32 pid, u32 seq, int event,
int nowait, unsigned int flags)
{
struct rtable *rt = skb->rtable;
@@ -2844,8 +2845,8 @@
__be32 dst = rt->rt_dst;
if (ipv4_is_multicast(dst) && !ipv4_is_local_multicast(dst) &&
- IPV4_DEVCONF_ALL(&init_net, MC_FORWARDING)) {
- int err = ipmr_get_route(skb, r, nowait);
+ IPV4_DEVCONF_ALL(net, MC_FORWARDING)) {
+ int err = ipmr_get_route(net, skb, r, nowait);
if (err <= 0) {
if (!nowait) {
if (err == 0)
@@ -2950,7 +2951,7 @@
if (rtm->rtm_flags & RTM_F_NOTIFY)
rt->rt_flags |= RTCF_NOTIFY;
- err = rt_fill_info(skb, NETLINK_CB(in_skb).pid, nlh->nlmsg_seq,
+ err = rt_fill_info(net, skb, NETLINK_CB(in_skb).pid, nlh->nlmsg_seq,
RTM_NEWROUTE, 0, 0);
if (err <= 0)
goto errout_free;
@@ -2988,7 +2989,7 @@
if (rt_is_expired(rt))
continue;
skb->dst = dst_clone(&rt->u.dst);
- if (rt_fill_info(skb, NETLINK_CB(cb->skb).pid,
+ if (rt_fill_info(net, skb, NETLINK_CB(cb->skb).pid,
cb->nlh->nlmsg_seq, RTM_NEWROUTE,
1, NLM_F_MULTI) <= 0) {
dst_release(xchg(&skb->dst, NULL));