static int ipgre_fb_tunnel_init(struct net_device *dev);
+#define HASH_SIZE 16
+
static int ipgre_net_id;
struct ipgre_net {
-};
+ struct ip_tunnel *tunnels[4][HASH_SIZE];
-static struct net_device *ipgre_fb_tunnel_dev;
+ struct net_device *fb_tunnel_dev;
+};
/* Tunnel hash table */
will match fallback tunnel.
*/
-#define HASH_SIZE 16
#define HASH(addr) (((__force u32)addr^((__force u32)addr>>4))&0xF)
-static struct ip_tunnel *tunnels[4][HASH_SIZE];
-
-#define tunnels_r_l (tunnels[3])
-#define tunnels_r (tunnels[2])
-#define tunnels_l (tunnels[1])
-#define tunnels_wc (tunnels[0])
+#define tunnels_r_l tunnels[3]
+#define tunnels_r tunnels[2]
+#define tunnels_l tunnels[1]
+#define tunnels_wc tunnels[0]
static DEFINE_RWLOCK(ipgre_lock);
unsigned h0 = HASH(remote);
unsigned h1 = HASH(key);
struct ip_tunnel *t;
+ struct ipgre_net *ign = net_generic(net, ipgre_net_id);
- for (t = tunnels_r_l[h0^h1]; t; t = t->next) {
+ for (t = ign->tunnels_r_l[h0^h1]; t; t = t->next) {
if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr) {
if (t->parms.i_key == key && (t->dev->flags&IFF_UP))
return t;
}
}
- for (t = tunnels_r[h0^h1]; t; t = t->next) {
+ for (t = ign->tunnels_r[h0^h1]; t; t = t->next) {
if (remote == t->parms.iph.daddr) {
if (t->parms.i_key == key && (t->dev->flags&IFF_UP))
return t;
}
}
- for (t = tunnels_l[h1]; t; t = t->next) {
+ for (t = ign->tunnels_l[h1]; t; t = t->next) {
if (local == t->parms.iph.saddr ||
(local == t->parms.iph.daddr &&
ipv4_is_multicast(local))) {
return t;
}
}
- for (t = tunnels_wc[h1]; t; t = t->next) {
+ for (t = ign->tunnels_wc[h1]; t; t = t->next) {
if (t->parms.i_key == key && (t->dev->flags&IFF_UP))
return t;
}
- if (ipgre_fb_tunnel_dev->flags&IFF_UP)
- return netdev_priv(ipgre_fb_tunnel_dev);
+ if (ign->fb_tunnel_dev->flags&IFF_UP)
+ return netdev_priv(ign->fb_tunnel_dev);
return NULL;
}
h ^= HASH(remote);
}
- return &tunnels[prio][h];
+ return &ign->tunnels[prio][h];
}
static inline struct ip_tunnel **ipgre_bucket(struct ipgre_net *ign,
if (!dev)
return NULL;
+ dev_net_set(dev, net);
+
if (strchr(name, '%')) {
if (dev_alloc_name(dev, name) < 0)
goto failed_free;
fl.fl4_dst = eiph->saddr;
fl.fl4_tos = RT_TOS(eiph->tos);
fl.proto = IPPROTO_GRE;
- if (ip_route_output_key(&init_net, &rt, &fl)) {
+ if (ip_route_output_key(dev_net(skb->dev), &rt, &fl)) {
kfree_skb(skb2);
return;
}
fl.fl4_dst = eiph->daddr;
fl.fl4_src = eiph->saddr;
fl.fl4_tos = eiph->tos;
- if (ip_route_output_key(&init_net, &rt, &fl) ||
+ if (ip_route_output_key(dev_net(skb->dev), &rt, &fl) ||
rt->u.dst.dev->type != ARPHRD_IPGRE) {
ip_rt_put(rt);
kfree_skb(skb2);
.saddr = tiph->saddr,
.tos = RT_TOS(tos) } },
.proto = IPPROTO_GRE };
- if (ip_route_output_key(&init_net, &rt, &fl)) {
+ if (ip_route_output_key(dev_net(dev), &rt, &fl)) {
tunnel->stat.tx_carrier_errors++;
goto tx_error;
}
.tos = RT_TOS(iph->tos) } },
.proto = IPPROTO_GRE };
struct rtable *rt;
- if (!ip_route_output_key(&init_net, &rt, &fl)) {
+ if (!ip_route_output_key(dev_net(dev), &rt, &fl)) {
tdev = rt->u.dst.dev;
ip_rt_put(rt);
}
}
if (!tdev && tunnel->parms.link)
- tdev = __dev_get_by_index(&init_net, tunnel->parms.link);
+ tdev = __dev_get_by_index(dev_net(dev), tunnel->parms.link);
if (tdev) {
hlen = tdev->hard_header_len;
switch (cmd) {
case SIOCGETTUNNEL:
t = NULL;
- if (dev == ipgre_fb_tunnel_dev) {
+ if (dev == ign->fb_tunnel_dev) {
if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p))) {
err = -EFAULT;
break;
t = ipgre_tunnel_locate(net, &p, cmd == SIOCADDTUNNEL);
- if (dev != ipgre_fb_tunnel_dev && cmd == SIOCCHGTUNNEL) {
+ if (dev != ign->fb_tunnel_dev && cmd == SIOCCHGTUNNEL) {
if (t != NULL) {
if (t->dev != dev) {
err = -EEXIST;
if (!capable(CAP_NET_ADMIN))
goto done;
- if (dev == ipgre_fb_tunnel_dev) {
+ if (dev == ign->fb_tunnel_dev) {
err = -EFAULT;
if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p)))
goto done;
if ((t = ipgre_tunnel_locate(net, &p, 0)) == NULL)
goto done;
err = -EPERM;
- if (t == netdev_priv(ipgre_fb_tunnel_dev))
+ if (t == netdev_priv(ign->fb_tunnel_dev))
goto done;
dev = t->dev;
}
.tos = RT_TOS(t->parms.iph.tos) } },
.proto = IPPROTO_GRE };
struct rtable *rt;
- if (ip_route_output_key(&init_net, &rt, &fl))
+ if (ip_route_output_key(dev_net(dev), &rt, &fl))
return -EADDRNOTAVAIL;
dev = rt->u.dst.dev;
ip_rt_put(rt);
dev->flags = IFF_NOARP;
dev->iflink = 0;
dev->addr_len = 4;
+ dev->features |= NETIF_F_NETNS_LOCAL;
}
static int ipgre_tunnel_init(struct net_device *dev)
return 0;
}
-static int __init ipgre_fb_tunnel_init(struct net_device *dev)
+static int ipgre_fb_tunnel_init(struct net_device *dev)
{
struct ip_tunnel *tunnel = netdev_priv(dev);
struct iphdr *iph = &tunnel->parms.iph;
+ struct ipgre_net *ign = net_generic(dev_net(dev), ipgre_net_id);
tunnel->dev = dev;
strcpy(tunnel->parms.name, dev->name);
tunnel->hlen = sizeof(struct iphdr) + 4;
dev_hold(dev);
- tunnels_wc[0] = tunnel;
+ ign->tunnels_wc[0] = tunnel;
return 0;
}
static struct net_protocol ipgre_protocol = {
.handler = ipgre_rcv,
.err_handler = ipgre_err,
+ .netns_ok = 1,
};
+static void ipgre_destroy_tunnels(struct ipgre_net *ign)
+{
+ int prio;
+
+ for (prio = 0; prio < 4; prio++) {
+ int h;
+ for (h = 0; h < HASH_SIZE; h++) {
+ struct ip_tunnel *t;
+ while ((t = ign->tunnels[prio][h]) != NULL)
+ unregister_netdevice(t->dev);
+ }
+ }
+}
+
static int ipgre_init_net(struct net *net)
{
int err;
struct ipgre_net *ign;
err = -ENOMEM;
- ign = kmalloc(sizeof(struct ipgre_net), GFP_KERNEL);
+ ign = kzalloc(sizeof(struct ipgre_net), GFP_KERNEL);
if (ign == NULL)
goto err_alloc;
if (err < 0)
goto err_assign;
+ ign->fb_tunnel_dev = alloc_netdev(sizeof(struct ip_tunnel), "gre0",
+ ipgre_tunnel_setup);
+ if (!ign->fb_tunnel_dev) {
+ err = -ENOMEM;
+ goto err_alloc_dev;
+ }
+
+ ign->fb_tunnel_dev->init = ipgre_fb_tunnel_init;
+ dev_net_set(ign->fb_tunnel_dev, net);
+
+ if ((err = register_netdev(ign->fb_tunnel_dev)))
+ goto err_reg_dev;
+
return 0;
+err_reg_dev:
+ free_netdev(ign->fb_tunnel_dev);
+err_alloc_dev:
+ /* nothing */
err_assign:
kfree(ign);
err_alloc:
struct ipgre_net *ign;
ign = net_generic(net, ipgre_net_id);
+ rtnl_lock();
+ ipgre_destroy_tunnels(ign);
+ rtnl_unlock();
kfree(ign);
}
return -EAGAIN;
}
- ipgre_fb_tunnel_dev = alloc_netdev(sizeof(struct ip_tunnel), "gre0",
- ipgre_tunnel_setup);
- if (!ipgre_fb_tunnel_dev) {
- err = -ENOMEM;
- goto err1;
- }
-
- ipgre_fb_tunnel_dev->init = ipgre_fb_tunnel_init;
-
- if ((err = register_netdev(ipgre_fb_tunnel_dev)))
- goto err2;
-
err = register_pernet_gen_device(&ipgre_net_id, &ipgre_net_ops);
if (err < 0)
- goto err3;
-out:
- return err;
-err2:
- free_netdev(ipgre_fb_tunnel_dev);
-err1:
- inet_del_protocol(&ipgre_protocol, IPPROTO_GRE);
- goto out;
-err3:
- unregister_netdevice(ipgre_fb_tunnel_dev);
- goto err1;
-}
+ inet_del_protocol(&ipgre_protocol, IPPROTO_GRE);
-static void __exit ipgre_destroy_tunnels(void)
-{
- int prio;
-
- for (prio = 0; prio < 4; prio++) {
- int h;
- for (h = 0; h < HASH_SIZE; h++) {
- struct ip_tunnel *t;
- while ((t = tunnels[prio][h]) != NULL)
- unregister_netdevice(t->dev);
- }
- }
+ return err;
}
static void __exit ipgre_fini(void)
if (inet_del_protocol(&ipgre_protocol, IPPROTO_GRE) < 0)
printk(KERN_INFO "ipgre close: can't remove protocol\n");
- rtnl_lock();
- ipgre_destroy_tunnels();
- rtnl_unlock();
-
unregister_pernet_gen_device(ipgre_net_id, &ipgre_net_ops);
}
projects / ~andy / linux / blobdiff