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authorBenjamin Thery <benjamin.thery@bull.net>2009-01-22 04:56:15 +0000
committerDavid S. Miller <davem@davemloft.net>2009-01-22 13:57:34 -0800
commit70a269e6c9c9b38b1a37dce068c59e9a912f8578 (patch)
treef39e0615f1a2e6588f620969a1f0a05b616f0b0e /net/ipv4/ipmr.c
parente35fac80ed0bb878f652cc0f70ca268656d275f7 (diff)
netns: ipmr: allocate mroute_socket per-namespace.
Preliminary work to make IPv4 multicast routing netns-aware. Make IPv4 multicast routing mroute_socket per-namespace, moves it into struct netns_ipv4. At the moment, mroute_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>
Diffstat (limited to 'net/ipv4/ipmr.c')
-rw-r--r--net/ipv4/ipmr.c28
1 files changed, 13 insertions, 15 deletions
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 14666449dc1c..ac324b702e8b 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -67,9 +67,6 @@
#define CONFIG_IP_PIMSM 1
#endif
-static struct sock *mroute_socket;
-
-
/* Big lock, protecting vif table, mrt cache and mroute socket state.
Note that the changes are semaphored via rtnl_lock.
*/
@@ -658,7 +655,7 @@ static int ipmr_cache_report(struct sk_buff *pkt, vifi_t vifi, int assert)
skb->transport_header = skb->network_header;
}
- if (mroute_socket == NULL) {
+ if (init_net.ipv4.mroute_sk == NULL) {
kfree_skb(skb);
return -EINVAL;
}
@@ -666,7 +663,8 @@ static int ipmr_cache_report(struct sk_buff *pkt, vifi_t vifi, int assert)
/*
* Deliver to mrouted
*/
- if ((ret = sock_queue_rcv_skb(mroute_socket, skb))<0) {
+ ret = sock_queue_rcv_skb(init_net.ipv4.mroute_sk, skb);
+ if (ret < 0) {
if (net_ratelimit())
printk(KERN_WARNING "mroute: pending queue full, dropping entries.\n");
kfree_skb(skb);
@@ -896,11 +894,11 @@ static void mroute_clean_tables(struct sock *sk)
static void mrtsock_destruct(struct sock *sk)
{
rtnl_lock();
- if (sk == mroute_socket) {
+ if (sk == init_net.ipv4.mroute_sk) {
IPV4_DEVCONF_ALL(sock_net(sk), MC_FORWARDING)--;
write_lock_bh(&mrt_lock);
- mroute_socket = NULL;
+ init_net.ipv4.mroute_sk = NULL;
write_unlock_bh(&mrt_lock);
mroute_clean_tables(sk);
@@ -922,7 +920,7 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, int
struct mfcctl mfc;
if (optname != MRT_INIT) {
- if (sk != mroute_socket && !capable(CAP_NET_ADMIN))
+ if (sk != init_net.ipv4.mroute_sk && !capable(CAP_NET_ADMIN))
return -EACCES;
}
@@ -935,7 +933,7 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, int
return -ENOPROTOOPT;
rtnl_lock();
- if (mroute_socket) {
+ if (init_net.ipv4.mroute_sk) {
rtnl_unlock();
return -EADDRINUSE;
}
@@ -943,7 +941,7 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, int
ret = ip_ra_control(sk, 1, mrtsock_destruct);
if (ret == 0) {
write_lock_bh(&mrt_lock);
- mroute_socket = sk;
+ init_net.ipv4.mroute_sk = sk;
write_unlock_bh(&mrt_lock);
IPV4_DEVCONF_ALL(sock_net(sk), MC_FORWARDING)++;
@@ -951,7 +949,7 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, int
rtnl_unlock();
return ret;
case MRT_DONE:
- if (sk != mroute_socket)
+ if (sk != init_net.ipv4.mroute_sk)
return -EACCES;
return ip_ra_control(sk, 0, NULL);
case MRT_ADD_VIF:
@@ -964,7 +962,7 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, int
return -ENFILE;
rtnl_lock();
if (optname == MRT_ADD_VIF) {
- ret = vif_add(&vif, sk==mroute_socket);
+ ret = vif_add(&vif, sk == init_net.ipv4.mroute_sk);
} else {
ret = vif_delete(vif.vifc_vifi, 0);
}
@@ -985,7 +983,7 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, int
if (optname == MRT_DEL_MFC)
ret = ipmr_mfc_delete(&mfc);
else
- ret = ipmr_mfc_add(&mfc, sk==mroute_socket);
+ ret = ipmr_mfc_add(&mfc, sk == init_net.ipv4.mroute_sk);
rtnl_unlock();
return ret;
/*
@@ -1425,9 +1423,9 @@ int ip_mr_input(struct sk_buff *skb)
that we can forward NO IGMP messages.
*/
read_lock(&mrt_lock);
- if (mroute_socket) {
+ if (init_net.ipv4.mroute_sk) {
nf_reset(skb);
- raw_rcv(mroute_socket, skb);
+ raw_rcv(init_net.ipv4.mroute_sk, skb);
read_unlock(&mrt_lock);
return 0;
}