/*
* Anycast support for IPv6
- * Linux INET6 implementation
+ * Linux INET6 implementation
*
* Authors:
* David L Stevens (dlstevens@us.ibm.com)
#include <linux/string.h>
#include <linux/socket.h>
#include <linux/sockios.h>
-#include <linux/sched.h>
#include <linux/net.h>
#include <linux/in6.h>
#include <linux/netdevice.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/snmp.h>
/* Big ac list lock for all the sockets */
static DEFINE_RWLOCK(ipv6_sk_ac_lock);
-static int
-ip6_onlink(struct in6_addr *addr, struct net_device *dev)
-{
- struct inet6_dev *idev;
- struct inet6_ifaddr *ifa;
- int onlink;
-
- onlink = 0;
- read_lock(&addrconf_lock);
- idev = __in6_dev_get(dev);
- if (idev) {
- read_lock_bh(&idev->lock);
- for (ifa=idev->addr_list; ifa; ifa=ifa->if_next) {
- onlink = ipv6_prefix_equal(addr, &ifa->addr,
- ifa->prefix_len);
- if (onlink)
- break;
- }
- read_unlock_bh(&idev->lock);
- }
- read_unlock(&addrconf_lock);
- return onlink;
-}
/*
* socket join an anycast group
struct net_device *dev = NULL;
struct inet6_dev *idev;
struct ipv6_ac_socklist *pac;
- int ishost = !ipv6_devconf.forwarding;
+ struct net *net = sock_net(sk);
+ int ishost = !net->ipv6.devconf_all->forwarding;
int err = 0;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
if (ipv6_addr_is_multicast(addr))
return -EINVAL;
- if (ipv6_chk_addr(addr, NULL, 0))
+ if (ipv6_chk_addr(net, addr, NULL, 0))
return -EINVAL;
pac = sock_kmalloc(sk, sizeof(struct ipv6_ac_socklist), GFP_KERNEL);
if (ifindex == 0) {
struct rt6_info *rt;
- rt = rt6_lookup(addr, NULL, 0, 0);
+ rt = rt6_lookup(net, addr, NULL, 0, 0);
if (rt) {
dev = rt->rt6i_dev;
dev_hold(dev);
} else {
/* router, no matching interface: just pick one */
- dev = dev_get_by_flags(IFF_UP, IFF_UP|IFF_LOOPBACK);
+ dev = dev_get_by_flags(net, IFF_UP, IFF_UP|IFF_LOOPBACK);
}
} else
- dev = dev_get_by_index(ifindex);
+ dev = dev_get_by_index(net, ifindex);
if (dev == NULL) {
err = -ENODEV;
* This obviates the need for propagating anycast routes while
* still allowing some non-router anycast participation.
*/
- if (!ip6_onlink(addr, dev)) {
+ if (!ipv6_chk_prefix(addr, dev)) {
if (ishost)
err = -EADDRNOTAVAIL;
if (err)
struct ipv6_pinfo *np = inet6_sk(sk);
struct net_device *dev;
struct ipv6_ac_socklist *pac, *prev_pac;
+ struct net *net = sock_net(sk);
write_lock_bh(&ipv6_sk_ac_lock);
prev_pac = NULL;
write_unlock_bh(&ipv6_sk_ac_lock);
- dev = dev_get_by_index(pac->acl_ifindex);
+ dev = dev_get_by_index(net, pac->acl_ifindex);
if (dev) {
ipv6_dev_ac_dec(dev, &pac->acl_addr);
dev_put(dev);
struct ipv6_pinfo *np = inet6_sk(sk);
struct net_device *dev = NULL;
struct ipv6_ac_socklist *pac;
+ struct net *net = sock_net(sk);
int prev_index;
write_lock_bh(&ipv6_sk_ac_lock);
if (pac->acl_ifindex != prev_index) {
if (dev)
dev_put(dev);
- dev = dev_get_by_index(pac->acl_ifindex);
+ dev = dev_get_by_index(net, pac->acl_ifindex);
prev_index = pac->acl_ifindex;
}
if (dev)
idev->ac_list = aca;
write_unlock_bh(&idev->lock);
- dst_hold(&rt->u.dst);
- if (ip6_ins_rt(rt))
- dst_release(&rt->u.dst);
+ ip6_ins_rt(rt);
addrconf_join_solict(dev, &aca->aca_addr);
addrconf_leave_solict(idev, &aca->aca_addr);
dst_hold(&aca->aca_rt->u.dst);
- if (ip6_del_rt(aca->aca_rt, NULL, NULL, NULL))
- dst_free(&aca->aca_rt->u.dst);
- else
- dst_release(&aca->aca_rt->u.dst);
+ ip6_del_rt(aca->aca_rt);
aca_put(aca);
return 0;
in6_dev_put(idev);
return ret;
}
-
+
/*
* check if the interface has this anycast address
*/
break;
read_unlock_bh(&idev->lock);
in6_dev_put(idev);
- return aca != 0;
+ return aca != NULL;
}
return 0;
}
/*
* check if given interface (or any, if dev==0) has this anycast address
*/
-int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr)
+int ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
+ struct in6_addr *addr)
{
+ int found = 0;
+
if (dev)
return ipv6_chk_acast_dev(dev, addr);
- read_lock(&dev_base_lock);
- for (dev=dev_base; dev; dev=dev->next)
- if (ipv6_chk_acast_dev(dev, addr))
+ rcu_read_lock();
+ for_each_netdev_rcu(net, dev)
+ if (ipv6_chk_acast_dev(dev, addr)) {
+ found = 1;
break;
- read_unlock(&dev_base_lock);
- return dev != 0;
+ }
+ rcu_read_unlock();
+ return found;
}
#ifdef CONFIG_PROC_FS
struct ac6_iter_state {
+ struct seq_net_private p;
struct net_device *dev;
struct inet6_dev *idev;
};
{
struct ifacaddr6 *im = NULL;
struct ac6_iter_state *state = ac6_seq_private(seq);
+ struct net *net = seq_file_net(seq);
- for (state->dev = dev_base, state->idev = NULL;
- state->dev;
- state->dev = state->dev->next) {
+ state->idev = NULL;
+ for_each_netdev(net, state->dev) {
struct inet6_dev *idev;
idev = in6_dev_get(state->dev);
if (!idev)
break;
}
read_unlock_bh(&idev->lock);
+ in6_dev_put(idev);
}
return im;
}
read_unlock_bh(&state->idev->lock);
in6_dev_put(state->idev);
}
- state->dev = state->dev->next;
+ state->dev = next_net_device(state->dev);
if (!state->dev) {
state->idev = NULL;
break;
}
static void *ac6_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(dev_base_lock)
{
read_lock(&dev_base_lock);
return ac6_get_idx(seq, *pos);
}
static void ac6_seq_stop(struct seq_file *seq, void *v)
+ __releases(dev_base_lock)
{
struct ac6_iter_state *state = ac6_seq_private(seq);
if (likely(state->idev != NULL)) {
struct ifacaddr6 *im = (struct ifacaddr6 *)v;
struct ac6_iter_state *state = ac6_seq_private(seq);
- seq_printf(seq,
- "%-4d %-15s " NIP6_SEQFMT " %5d\n",
+ seq_printf(seq, "%-4d %-15s %pi6 %5d\n",
state->dev->ifindex, state->dev->name,
- NIP6(im->aca_addr),
- im->aca_users);
+ &im->aca_addr, im->aca_users);
return 0;
}
-static struct seq_operations ac6_seq_ops = {
+static const struct seq_operations ac6_seq_ops = {
.start = ac6_seq_start,
.next = ac6_seq_next,
.stop = ac6_seq_stop,
static int ac6_seq_open(struct inode *inode, struct file *file)
{
- struct seq_file *seq;
- int rc = -ENOMEM;
- struct ac6_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL);
-
- if (!s)
- goto out;
-
- rc = seq_open(file, &ac6_seq_ops);
- if (rc)
- goto out_kfree;
-
- seq = file->private_data;
- seq->private = s;
-out:
- return rc;
-out_kfree:
- kfree(s);
- goto out;
+ return seq_open_net(inode, file, &ac6_seq_ops,
+ sizeof(struct ac6_iter_state));
}
-static struct file_operations ac6_seq_fops = {
+static const struct file_operations ac6_seq_fops = {
.owner = THIS_MODULE,
.open = ac6_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release_private,
+ .release = seq_release_net,
};
-int __init ac6_proc_init(void)
+int ac6_proc_init(struct net *net)
{
- if (!proc_net_fops_create("anycast6", S_IRUGO, &ac6_seq_fops))
+ if (!proc_net_fops_create(net, "anycast6", S_IRUGO, &ac6_seq_fops))
return -ENOMEM;
return 0;
}
-void ac6_proc_exit(void)
+void ac6_proc_exit(struct net *net)
{
- proc_net_remove("anycast6");
+ proc_net_remove(net, "anycast6");
}
#endif
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff