diff options
| author | Wang Chen <wangchen@cn.fujitsu.com> | 2008-07-03 12:13:30 +0800 |
|---|---|---|
| committer | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2008-07-03 17:51:56 +0900 |
| commit | 623d1a1af77bd52a389c6eda5920e28eb2ee468b (patch) | |
| tree | 85d0a7fbcd83b5a2cacf50b24a66c0063f7eca07 /net/ipv6/ip6mr.c | |
| parent | dd3abc4ef52597ec8268274222574b2700ba3ded (diff) | |
| download | kernel-crypto-623d1a1af77bd52a389c6eda5920e28eb2ee468b.tar.gz kernel-crypto-623d1a1af77bd52a389c6eda5920e28eb2ee468b.tar.xz kernel-crypto-623d1a1af77bd52a389c6eda5920e28eb2ee468b.zip | |
ipv6: Do cleanup for ip6_mr_init.
If do not do it, we will get following issues:
1. Leaving junks after inet6_init failing halfway.
2. Leaving proc and notifier junks after ipv6 modules unloading.
Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Diffstat (limited to 'net/ipv6/ip6mr.c')
| -rw-r--r-- | net/ipv6/ip6mr.c | 38 |
1 files changed, 33 insertions, 5 deletions
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index 90e763073dc..cfac26d674e 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -948,23 +948,51 @@ static struct notifier_block ip6_mr_notifier = { * Setup for IP multicast routing */ -void __init ip6_mr_init(void) +int __init ip6_mr_init(void) { + int err; + mrt_cachep = kmem_cache_create("ip6_mrt_cache", sizeof(struct mfc6_cache), 0, SLAB_HWCACHE_ALIGN, NULL); if (!mrt_cachep) - panic("cannot allocate ip6_mrt_cache"); + return -ENOMEM; setup_timer(&ipmr_expire_timer, ipmr_expire_process, 0); - register_netdevice_notifier(&ip6_mr_notifier); + err = register_netdevice_notifier(&ip6_mr_notifier); + if (err) + goto reg_notif_fail; +#ifdef CONFIG_PROC_FS + err = -ENOMEM; + if (!proc_net_fops_create(&init_net, "ip6_mr_vif", 0, &ip6mr_vif_fops)) + goto proc_vif_fail; + if (!proc_net_fops_create(&init_net, "ip6_mr_cache", + 0, &ip6mr_mfc_fops)) + goto proc_cache_fail; +#endif + return 0; +reg_notif_fail: + kmem_cache_destroy(mrt_cachep); #ifdef CONFIG_PROC_FS - proc_net_fops_create(&init_net, "ip6_mr_vif", 0, &ip6mr_vif_fops); - proc_net_fops_create(&init_net, "ip6_mr_cache", 0, &ip6mr_mfc_fops); +proc_vif_fail: + unregister_netdevice_notifier(&ip6_mr_notifier); +proc_cache_fail: + proc_net_remove(&init_net, "ip6_mr_vif"); #endif + return err; } +void ip6_mr_cleanup(void) +{ +#ifdef CONFIG_PROC_FS + proc_net_remove(&init_net, "ip6_mr_cache"); + proc_net_remove(&init_net, "ip6_mr_vif"); +#endif + unregister_netdevice_notifier(&ip6_mr_notifier); + del_timer(&ipmr_expire_timer); + kmem_cache_destroy(mrt_cachep); +} static int ip6mr_mfc_add(struct mf6cctl *mfc, int mrtsock) { |