diff options
| -rw-r--r-- | net/ipv4/ip_gre.c | 65 |
1 files changed, 31 insertions, 34 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index a8ec0904e5a..74d4c515772 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -124,8 +124,12 @@ static void ipgre_tunnel_setup(struct net_device *dev); 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]; + struct net_device *fb_tunnel_dev; }; @@ -147,15 +151,12 @@ struct ipgre_net { 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); @@ -169,19 +170,19 @@ static struct ip_tunnel * ipgre_tunnel_lookup(struct net *net, 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))) { @@ -189,7 +190,7 @@ static struct ip_tunnel * ipgre_tunnel_lookup(struct net *net, 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; } @@ -215,7 +216,7 @@ static struct ip_tunnel **__ipgre_bucket(struct ipgre_net *ign, h ^= HASH(remote); } - return &tunnels[prio][h]; + return &ign->tunnels[prio][h]; } static inline struct ip_tunnel **ipgre_bucket(struct ipgre_net *ign, @@ -1274,6 +1275,7 @@ 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); @@ -1284,7 +1286,7 @@ static int ipgre_fb_tunnel_init(struct net_device *dev) tunnel->hlen = sizeof(struct iphdr) + 4; dev_hold(dev); - tunnels_wc[0] = tunnel; + ign->tunnels_wc[0] = tunnel; return 0; } @@ -1294,13 +1296,27 @@ static struct net_protocol ipgre_protocol = { .err_handler = ipgre_err, }; +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; @@ -1339,8 +1355,7 @@ static void ipgre_exit_net(struct net *net) ign = net_generic(net, ipgre_net_id); rtnl_lock(); - if (net != &init_net) - unregister_netdevice(ign->fb_tunnel_dev); + ipgre_destroy_tunnels(ign); rtnl_unlock(); kfree(ign); } @@ -1372,29 +1387,11 @@ static int __init ipgre_init(void) return err; } -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); - } - } -} - 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); } |