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authorBenjamin Thery <benjamin.thery@bull.net>2008-12-10 16:29:24 -0800
committerDavid S. Miller <davem@davemloft.net>2008-12-10 16:29:24 -0800
commit950d5704e5daa1f90bcd75b99163491e7b249169 (patch)
treec46302160f4364dfc6e66c73c0c9910a9329810a
parenta21f3f997c73ced682129aedd372bb6b53041510 (diff)
downloadop-kernel-dev-950d5704e5daa1f90bcd75b99163491e7b249169.zip
op-kernel-dev-950d5704e5daa1f90bcd75b99163491e7b249169.tar.gz
netns: ip6mr: declare reg_vif_num per-namespace
Preliminary work to make IPv6 multicast forwarding netns-aware. Declare variable 'reg_vif_num' per-namespace, moves into struct netns_ipv6. At the moment, this variable is only referenced in init_net. Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/netns/ipv6.h3
-rw-r--r--net/ipv6/ip6mr.c19
2 files changed, 14 insertions, 8 deletions
diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
index 919cb0f..afab4e4 100644
--- a/include/net/netns/ipv6.h
+++ b/include/net/netns/ipv6.h
@@ -63,6 +63,9 @@ struct netns_ipv6 {
atomic_t cache_resolve_queue_len;
int mroute_do_assert;
int mroute_do_pim;
+#ifdef CONFIG_IPV6_PIMSM_V2
+ int mroute_reg_vif_num;
+#endif
#endif
};
#endif
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 2d2ac23..8e69385 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -333,13 +333,13 @@ static struct file_operations ip6mr_mfc_fops = {
#endif
#ifdef CONFIG_IPV6_PIMSM_V2
-static int reg_vif_num = -1;
static int pim6_rcv(struct sk_buff *skb)
{
struct pimreghdr *pim;
struct ipv6hdr *encap;
struct net_device *reg_dev = NULL;
+ int reg_vif_num = init_net.ipv6.mroute_reg_vif_num;
if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(*encap)))
goto drop;
@@ -401,7 +401,7 @@ static int reg_vif_xmit(struct sk_buff *skb, struct net_device *dev)
read_lock(&mrt_lock);
dev->stats.tx_bytes += skb->len;
dev->stats.tx_packets++;
- ip6mr_cache_report(skb, reg_vif_num, MRT6MSG_WHOLEPKT);
+ ip6mr_cache_report(skb, init_net.ipv6.mroute_reg_vif_num, MRT6MSG_WHOLEPKT);
read_unlock(&mrt_lock);
kfree_skb(skb);
return 0;
@@ -473,8 +473,8 @@ static int mif6_delete(int vifi)
}
#ifdef CONFIG_IPV6_PIMSM_V2
- if (vifi == reg_vif_num)
- reg_vif_num = -1;
+ if (vifi == init_net.ipv6.mroute_reg_vif_num)
+ init_net.ipv6.mroute_reg_vif_num = -1;
#endif
if (vifi + 1 == init_net.ipv6.maxvif) {
@@ -610,7 +610,7 @@ static int mif6_add(struct mif6ctl *vifc, int mrtsock)
* Special Purpose VIF in PIM
* All the packets will be sent to the daemon
*/
- if (reg_vif_num >= 0)
+ if (init_net.ipv6.mroute_reg_vif_num >= 0)
return -EADDRINUSE;
dev = ip6mr_reg_vif();
if (!dev)
@@ -658,7 +658,7 @@ static int mif6_add(struct mif6ctl *vifc, int mrtsock)
v->dev = dev;
#ifdef CONFIG_IPV6_PIMSM_V2
if (v->flags & MIFF_REGISTER)
- reg_vif_num = vifi;
+ init_net.ipv6.mroute_reg_vif_num = vifi;
#endif
if (vifi + 1 > init_net.ipv6.maxvif)
init_net.ipv6.maxvif = vifi + 1;
@@ -777,7 +777,7 @@ static int ip6mr_cache_report(struct sk_buff *pkt, mifi_t mifi, int assert)
msg = (struct mrt6msg *)skb_transport_header(skb);
msg->im6_mbz = 0;
msg->im6_msgtype = MRT6MSG_WHOLEPKT;
- msg->im6_mif = reg_vif_num;
+ msg->im6_mif = init_net.ipv6.mroute_reg_vif_num;
msg->im6_pad = 0;
ipv6_addr_copy(&msg->im6_src, &ipv6_hdr(pkt)->saddr);
ipv6_addr_copy(&msg->im6_dst, &ipv6_hdr(pkt)->daddr);
@@ -964,7 +964,6 @@ static struct notifier_block ip6_mr_notifier = {
static int __net_init ip6mr_net_init(struct net *net)
{
int err = 0;
-
net->ipv6.vif6_table = kcalloc(MAXMIFS, sizeof(struct mif_device),
GFP_KERNEL);
if (!net->ipv6.vif6_table) {
@@ -980,6 +979,10 @@ static int __net_init ip6mr_net_init(struct net *net)
err = -ENOMEM;
goto fail_mfc6_cache;
}
+
+#ifdef CONFIG_IPV6_PIMSM_V2
+ net->ipv6.mroute_reg_vif_num = -1;
+#endif
return 0;
fail_mfc6_cache:
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