netns: ip6mr: allocate mroute6_socket per-namespace.
Preliminary work to make IPv6 multicast forwarding netns-aware.
Make IPv6 multicast forwarding mroute6_socket per-namespace,
moves it into struct netns_ipv6.
At the moment, mroute6_socket is only referenced in init_net.
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index d1008e6..02163db 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -49,9 +49,6 @@
#include <net/addrconf.h>
#include <linux/netfilter_ipv6.h>
-struct sock *mroute6_socket;
-
-
/* Big lock, protecting vif table, mrt cache and mroute socket state.
Note that the changes are semaphored via rtnl_lock.
*/
@@ -820,7 +817,7 @@
skb_pull(skb, sizeof(struct ipv6hdr));
}
- if (mroute6_socket == NULL) {
+ if (init_net.ipv6.mroute6_sk == NULL) {
kfree_skb(skb);
return -EINVAL;
}
@@ -828,7 +825,8 @@
/*
* Deliver to user space multicast routing algorithms
*/
- if ((ret = sock_queue_rcv_skb(mroute6_socket, skb)) < 0) {
+ ret = sock_queue_rcv_skb(init_net.ipv6.mroute6_sk, skb);
+ if (ret < 0) {
if (net_ratelimit())
printk(KERN_WARNING "mroute6: pending queue full, dropping entries.\n");
kfree_skb(skb);
@@ -1145,8 +1143,8 @@
rtnl_lock();
write_lock_bh(&mrt_lock);
- if (likely(mroute6_socket == NULL))
- mroute6_socket = sk;
+ if (likely(init_net.ipv6.mroute6_sk == NULL))
+ init_net.ipv6.mroute6_sk = sk;
else
err = -EADDRINUSE;
write_unlock_bh(&mrt_lock);
@@ -1161,9 +1159,9 @@
int err = 0;
rtnl_lock();
- if (sk == mroute6_socket) {
+ if (sk == init_net.ipv6.mroute6_sk) {
write_lock_bh(&mrt_lock);
- mroute6_socket = NULL;
+ init_net.ipv6.mroute6_sk = NULL;
write_unlock_bh(&mrt_lock);
mroute_clean_tables(sk);
@@ -1189,7 +1187,7 @@
mifi_t mifi;
if (optname != MRT6_INIT) {
- if (sk != mroute6_socket && !capable(CAP_NET_ADMIN))
+ if (sk != init_net.ipv6.mroute6_sk && !capable(CAP_NET_ADMIN))
return -EACCES;
}
@@ -1214,7 +1212,7 @@
if (vif.mif6c_mifi >= MAXMIFS)
return -ENFILE;
rtnl_lock();
- ret = mif6_add(&vif, sk == mroute6_socket);
+ ret = mif6_add(&vif, sk == init_net.ipv6.mroute6_sk);
rtnl_unlock();
return ret;
@@ -1242,7 +1240,7 @@
if (optname == MRT6_DEL_MFC)
ret = ip6mr_mfc_delete(&mfc);
else
- ret = ip6mr_mfc_add(&mfc, sk == mroute6_socket);
+ ret = ip6mr_mfc_add(&mfc, sk == init_net.ipv6.mroute6_sk);
rtnl_unlock();
return ret;