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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
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')
-rw-r--r--net/ipv6/addrconf.c28
-rw-r--r--net/ipv6/af_inet6.c2
-rw-r--r--net/ipv6/anycast.c12
-rw-r--r--net/ipv6/datagram.c2
-rw-r--r--net/ipv6/ip6_tunnel.c6
-rw-r--r--net/ipv6/ipv6_sockglue.c2
-rw-r--r--net/ipv6/mcast.c12
-rw-r--r--net/ipv6/raw.c2
-rw-r--r--net/ipv6/reassembly.c2
-rw-r--r--net/ipv6/route.c4
-rw-r--r--net/ipv6/sit.c4
11 files changed, 38 insertions, 38 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 1a67836..ee55be9 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -450,7 +450,7 @@ static void addrconf_forward_change(void)
struct inet6_dev *idev;
read_lock(&dev_base_lock);
- for_each_netdev(dev) {
+ for_each_netdev(&init_net, dev) {
rcu_read_lock();
idev = __in6_dev_get(dev);
if (idev) {
@@ -912,7 +912,7 @@ int ipv6_dev_get_saddr(struct net_device *daddr_dev,
read_lock(&dev_base_lock);
rcu_read_lock();
- for_each_netdev(dev) {
+ for_each_netdev(&init_net, dev) {
struct inet6_dev *idev;
struct inet6_ifaddr *ifa;
@@ -1858,7 +1858,7 @@ int addrconf_set_dstaddr(void __user *arg)
if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq)))
goto err_exit;
- dev = __dev_get_by_index(ireq.ifr6_ifindex);
+ dev = __dev_get_by_index(&init_net, ireq.ifr6_ifindex);
err = -ENODEV;
if (dev == NULL)
@@ -1889,7 +1889,7 @@ int addrconf_set_dstaddr(void __user *arg)
if (err == 0) {
err = -ENOBUFS;
- if ((dev = __dev_get_by_name(p.name)) == NULL)
+ if ((dev = __dev_get_by_name(&init_net, p.name)) == NULL)
goto err_exit;
err = dev_open(dev);
}
@@ -1919,7 +1919,7 @@ static int inet6_addr_add(int ifindex, struct in6_addr *pfx, int plen,
if (!valid_lft || prefered_lft > valid_lft)
return -EINVAL;
- if ((dev = __dev_get_by_index(ifindex)) == NULL)
+ if ((dev = __dev_get_by_index(&init_net, ifindex)) == NULL)
return -ENODEV;
if ((idev = addrconf_add_dev(dev)) == NULL)
@@ -1970,7 +1970,7 @@ static int inet6_addr_del(int ifindex, struct in6_addr *pfx, int plen)
struct inet6_dev *idev;
struct net_device *dev;
- if ((dev = __dev_get_by_index(ifindex)) == NULL)
+ if ((dev = __dev_get_by_index(&init_net, ifindex)) == NULL)
return -ENODEV;
if ((idev = __in6_dev_get(dev)) == NULL)
@@ -2065,7 +2065,7 @@ static void sit_add_v4_addrs(struct inet6_dev *idev)
return;
}
- for_each_netdev(dev) {
+ for_each_netdev(&init_net, dev) {
struct in_device * in_dev = __in_dev_get_rtnl(dev);
if (in_dev && (dev->flags & IFF_UP)) {
struct in_ifaddr * ifa;
@@ -2221,12 +2221,12 @@ static void ip6_tnl_add_linklocal(struct inet6_dev *idev)
/* first try to inherit the link-local address from the link device */
if (idev->dev->iflink &&
- (link_dev = __dev_get_by_index(idev->dev->iflink))) {
+ (link_dev = __dev_get_by_index(&init_net, idev->dev->iflink))) {
if (!ipv6_inherit_linklocal(idev, link_dev))
return;
}
/* then try to inherit it from any device */
- for_each_netdev(link_dev) {
+ for_each_netdev(&init_net, link_dev) {
if (!ipv6_inherit_linklocal(idev, link_dev))
return;
}
@@ -3084,7 +3084,7 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
valid_lft = INFINITY_LIFE_TIME;
}
- dev = __dev_get_by_index(ifm->ifa_index);
+ dev = __dev_get_by_index(&init_net, ifm->ifa_index);
if (dev == NULL)
return -ENODEV;
@@ -3268,7 +3268,7 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
s_ip_idx = ip_idx = cb->args[1];
idx = 0;
- for_each_netdev(dev) {
+ for_each_netdev(&init_net, dev) {
if (idx < s_idx)
goto cont;
if (idx > s_idx)
@@ -3377,7 +3377,7 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr* nlh,
ifm = nlmsg_data(nlh);
if (ifm->ifa_index)
- dev = __dev_get_by_index(ifm->ifa_index);
+ dev = __dev_get_by_index(&init_net, ifm->ifa_index);
if ((ifa = ipv6_get_ifaddr(addr, dev, 1)) == NULL) {
err = -EADDRNOTAVAIL;
@@ -3589,7 +3589,7 @@ static int inet6_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
read_lock(&dev_base_lock);
idx = 0;
- for_each_netdev(dev) {
+ for_each_netdev(&init_net, dev) {
if (idx < s_idx)
goto cont;
if ((idev = in6_dev_get(dev)) == NULL)
@@ -4266,7 +4266,7 @@ void __exit addrconf_cleanup(void)
* clean dev list.
*/
- for_each_netdev(dev) {
+ for_each_netdev(&init_net, dev) {
if (__in6_dev_get(dev) == NULL)
continue;
addrconf_ifdown(dev, 1);
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 21931c8..e5c5aad 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -302,7 +302,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
err = -EINVAL;
goto out;
}
- dev = dev_get_by_index(sk->sk_bound_dev_if);
+ dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if);
if (!dev) {
err = -ENODEV;
goto out;
diff --git a/net/ipv6/anycast.c b/net/ipv6/anycast.c
index 0bd66549..d407992 100644
--- a/net/ipv6/anycast.c
+++ b/net/ipv6/anycast.c
@@ -112,10 +112,10 @@ int ipv6_sock_ac_join(struct sock *sk, int ifindex, struct in6_addr *addr)
} else {
/* router, no matching interface: just pick one */
- dev = dev_get_by_flags(IFF_UP, IFF_UP|IFF_LOOPBACK);
+ dev = dev_get_by_flags(&init_net, IFF_UP, IFF_UP|IFF_LOOPBACK);
}
} else
- dev = dev_get_by_index(ifindex);
+ dev = dev_get_by_index(&init_net, ifindex);
if (dev == NULL) {
err = -ENODEV;
@@ -196,7 +196,7 @@ int ipv6_sock_ac_drop(struct sock *sk, int ifindex, struct in6_addr *addr)
write_unlock_bh(&ipv6_sk_ac_lock);
- dev = dev_get_by_index(pac->acl_ifindex);
+ dev = dev_get_by_index(&init_net, pac->acl_ifindex);
if (dev) {
ipv6_dev_ac_dec(dev, &pac->acl_addr);
dev_put(dev);
@@ -224,7 +224,7 @@ void ipv6_sock_ac_close(struct sock *sk)
if (pac->acl_ifindex != prev_index) {
if (dev)
dev_put(dev);
- dev = dev_get_by_index(pac->acl_ifindex);
+ dev = dev_get_by_index(&init_net, pac->acl_ifindex);
prev_index = pac->acl_ifindex;
}
if (dev)
@@ -429,7 +429,7 @@ int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr)
if (dev)
return ipv6_chk_acast_dev(dev, addr);
read_lock(&dev_base_lock);
- for_each_netdev(dev)
+ for_each_netdev(&init_net, dev)
if (ipv6_chk_acast_dev(dev, addr)) {
found = 1;
break;
@@ -453,7 +453,7 @@ static inline struct ifacaddr6 *ac6_get_first(struct seq_file *seq)
struct ac6_iter_state *state = ac6_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)
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index fe0f490..2ed689a 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -544,7 +544,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
if (!src_info->ipi6_ifindex)
return -EINVAL;
else {
- dev = dev_get_by_index(src_info->ipi6_ifindex);
+ dev = dev_get_by_index(&init_net, src_info->ipi6_ifindex);
if (!dev)
return -ENODEV;
}
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index ca774d8..937625e 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -235,7 +235,7 @@ static struct ip6_tnl *ip6_tnl_create(struct ip6_tnl_parm *p)
int i;
for (i = 1; i < IP6_TNL_MAX; i++) {
sprintf(name, "ip6tnl%d", i);
- if (__dev_get_by_name(name) == NULL)
+ if (__dev_get_by_name(&init_net, name) == NULL)
break;
}
if (i == IP6_TNL_MAX)
@@ -650,7 +650,7 @@ static inline int ip6_tnl_rcv_ctl(struct ip6_tnl *t)
struct net_device *ldev = NULL;
if (p->link)
- ldev = dev_get_by_index(p->link);
+ ldev = dev_get_by_index(&init_net, p->link);
if ((ipv6_addr_is_multicast(&p->laddr) ||
likely(ipv6_chk_addr(&p->laddr, ldev, 0))) &&
@@ -786,7 +786,7 @@ static inline int ip6_tnl_xmit_ctl(struct ip6_tnl *t)
struct net_device *ldev = NULL;
if (p->link)
- ldev = dev_get_by_index(p->link);
+ ldev = dev_get_by_index(&init_net, p->link);
if (unlikely(!ipv6_chk_addr(&p->laddr, ldev, 0)))
printk(KERN_WARNING
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 74254fc..eb330a4 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -542,7 +542,7 @@ done:
if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != val)
goto e_inval;
- if (__dev_get_by_index(val) == NULL) {
+ if (__dev_get_by_index(&init_net, val) == NULL) {
retv = -ENODEV;
break;
}
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))
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 38a3d21..bdd0974 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -283,7 +283,7 @@ static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
if (!sk->sk_bound_dev_if)
goto out;
- dev = dev_get_by_index(sk->sk_bound_dev_if);
+ dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if);
if (!dev) {
err = -ENODEV;
goto out;
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index de795c0..31601c9 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -301,7 +301,7 @@ static void ip6_frag_expire(unsigned long data)
fq_kill(fq);
- dev = dev_get_by_index(fq->iif);
+ dev = dev_get_by_index(&init_net, fq->iif);
if (!dev)
goto out;
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index f4f0c34..5bdd9d4 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1130,7 +1130,7 @@ int ip6_route_add(struct fib6_config *cfg)
#endif
if (cfg->fc_ifindex) {
err = -ENODEV;
- dev = dev_get_by_index(cfg->fc_ifindex);
+ dev = dev_get_by_index(&init_net, cfg->fc_ifindex);
if (!dev)
goto out;
idev = in6_dev_get(dev);
@@ -2265,7 +2265,7 @@ static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
if (iif) {
struct net_device *dev;
- dev = __dev_get_by_index(iif);
+ dev = __dev_get_by_index(&init_net, iif);
if (!dev) {
err = -ENODEV;
goto errout;
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index eb20bb6..e79f419 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -167,7 +167,7 @@ static struct ip_tunnel * ipip6_tunnel_locate(struct ip_tunnel_parm *parms, int
int i;
for (i=1; i<100; i++) {
sprintf(name, "sit%d", i);
- if (__dev_get_by_name(name) == NULL)
+ if (__dev_get_by_name(&init_net, name) == NULL)
break;
}
if (i==100)
@@ -761,7 +761,7 @@ static int ipip6_tunnel_init(struct net_device *dev)
}
if (!tdev && tunnel->parms.link)
- tdev = __dev_get_by_index(tunnel->parms.link);
+ tdev = __dev_get_by_index(&init_net, tunnel->parms.link);
if (tdev) {
dev->hard_header_len = tdev->hard_header_len + sizeof(struct iphdr);
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