diff options
Diffstat (limited to 'net/6lowpan/core.c')
| -rw-r--r-- | net/6lowpan/core.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/net/6lowpan/core.c b/net/6lowpan/core.c index faf65baed617..34e44c0c0836 100644 --- a/net/6lowpan/core.c +++ b/net/6lowpan/core.c @@ -20,7 +20,7 @@ int lowpan_register_netdevice(struct net_device *dev, enum lowpan_lltypes lltype) { - int ret; + int i, ret; dev->addr_len = EUI64_ADDR_LEN; dev->type = ARPHRD_6LOWPAN; @@ -29,6 +29,10 @@ int lowpan_register_netdevice(struct net_device *dev, lowpan_priv(dev)->lltype = lltype; + spin_lock_init(&lowpan_priv(dev)->ctx.lock); + for (i = 0; i < LOWPAN_IPHC_CTX_TABLE_SIZE; i++) + lowpan_priv(dev)->ctx.table[i].id = i; + ret = register_netdevice(dev); if (ret < 0) return ret; @@ -68,6 +72,32 @@ void lowpan_unregister_netdev(struct net_device *dev) } EXPORT_SYMBOL(lowpan_unregister_netdev); +static int lowpan_event(struct notifier_block *unused, + unsigned long event, void *ptr) +{ + struct net_device *dev = netdev_notifier_info_to_dev(ptr); + int i; + + if (dev->type != ARPHRD_6LOWPAN) + return NOTIFY_DONE; + + switch (event) { + case NETDEV_DOWN: + for (i = 0; i < LOWPAN_IPHC_CTX_TABLE_SIZE; i++) + clear_bit(LOWPAN_IPHC_CTX_FLAG_ACTIVE, + &lowpan_priv(dev)->ctx.table[i].flags); + break; + default: + return NOTIFY_DONE; + } + + return NOTIFY_OK; +} + +static struct notifier_block lowpan_notifier = { + .notifier_call = lowpan_event, +}; + static int __init lowpan_module_init(void) { int ret; @@ -76,6 +106,12 @@ static int __init lowpan_module_init(void) if (ret < 0) return ret; + ret = register_netdevice_notifier(&lowpan_notifier); + if (ret < 0) { + lowpan_debugfs_exit(); + return ret; + } + request_module_nowait("ipv6"); request_module_nowait("nhc_dest"); @@ -92,6 +128,7 @@ static int __init lowpan_module_init(void) static void __exit lowpan_module_exit(void) { lowpan_debugfs_exit(); + unregister_netdevice_notifier(&lowpan_notifier); } module_init(lowpan_module_init); |