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authorEric W. Biederman <ebiederm@xmission.com>2007-09-17 11:56:21 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:49:10 -0700
commit881d966b48b035ab3f3aeaae0f3d3f9b584f45b2 (patch)
treec579d59a4107cbbe9e2b85939bc0d496b815c887 /net/ipv6/mcast.c
parentb4b510290b056b86611757ce1175a230f1080f53 (diff)
downloadop-kernel-dev-881d966b48b035ab3f3aeaae0f3d3f9b584f45b2.zip
op-kernel-dev-881d966b48b035ab3f3aeaae0f3d3f9b584f45b2.tar.gz
[NET]: Make the device list and device lookups per namespace.
This patch makes most of the generic device layer network namespace safe. This patch makes dev_base_head a network namespace variable, and then it picks up a few associated variables. The functions: dev_getbyhwaddr dev_getfirsthwbytype dev_get_by_flags dev_get_by_name __dev_get_by_name dev_get_by_index __dev_get_by_index dev_ioctl dev_ethtool dev_load wireless_process_ioctl were modified to take a network namespace argument, and deal with it. vlan_ioctl_set and brioctl_set were modified so their hooks will receive a network namespace argument. So basically anthing in the core of the network stack that was affected to by the change of dev_base was modified to handle multiple network namespaces. The rest of the network stack was simply modified to explicitly use &init_net the initial network namespace. This can be fixed when those components of the network stack are modified to handle multiple network namespaces. For now the ifindex generator is left global. Fundametally ifindex numbers are per namespace, or else we will have corner case problems with migration when we get that far. At the same time there are assumptions in the network stack that the ifindex of a network device won't change. Making the ifindex number global seems a good compromise until the network stack can cope with ifindex changes when you change namespaces, and the like. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/mcast.c')
-rw-r--r--net/ipv6/mcast.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index a41d5a0..e2ab43c 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -215,7 +215,7 @@ int ipv6_sock_mc_join(struct sock *sk, int ifindex, struct in6_addr *addr)
dst_release(&rt->u.dst);
}
} else
- dev = dev_get_by_index(ifindex);
+ dev = dev_get_by_index(&init_net, ifindex);
if (dev == NULL) {
sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
@@ -266,7 +266,7 @@ int ipv6_sock_mc_drop(struct sock *sk, int ifindex, struct in6_addr *addr)
*lnk = mc_lst->next;
write_unlock_bh(&ipv6_sk_mc_lock);
- if ((dev = dev_get_by_index(mc_lst->ifindex)) != NULL) {
+ if ((dev = dev_get_by_index(&init_net, mc_lst->ifindex)) != NULL) {
struct inet6_dev *idev = in6_dev_get(dev);
(void) ip6_mc_leave_src(sk, mc_lst, idev);
@@ -301,7 +301,7 @@ static struct inet6_dev *ip6_mc_find_dev(struct in6_addr *group, int ifindex)
dst_release(&rt->u.dst);
}
} else
- dev = dev_get_by_index(ifindex);
+ dev = dev_get_by_index(&init_net, ifindex);
if (!dev)
return NULL;
@@ -332,7 +332,7 @@ void ipv6_sock_mc_close(struct sock *sk)
np->ipv6_mc_list = mc_lst->next;
write_unlock_bh(&ipv6_sk_mc_lock);
- dev = dev_get_by_index(mc_lst->ifindex);
+ dev = dev_get_by_index(&init_net, mc_lst->ifindex);
if (dev) {
struct inet6_dev *idev = in6_dev_get(dev);
@@ -2333,7 +2333,7 @@ static inline struct ifmcaddr6 *igmp6_mc_get_first(struct seq_file *seq)
struct igmp6_mc_iter_state *state = igmp6_mc_seq_private(seq);
state->idev = NULL;
- for_each_netdev(state->dev) {
+ for_each_netdev(&init_net, state->dev) {
struct inet6_dev *idev;
idev = in6_dev_get(state->dev);
if (!idev)
@@ -2477,7 +2477,7 @@ static inline struct ip6_sf_list *igmp6_mcf_get_first(struct seq_file *seq)
state->idev = NULL;
state->im = NULL;
- for_each_netdev(state->dev) {
+ for_each_netdev(&init_net, state->dev) {
struct inet6_dev *idev;
idev = in6_dev_get(state->dev);
if (unlikely(idev == NULL))
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