diff options
author | Denis V. Lunev <den@openvz.org> | 2008-02-29 19:21:22 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-02-29 19:21:22 (GMT) |
commit | 98c6d1b261e74750e6c56ede26dc295201c4a8b2 (patch) | |
tree | e37818f4023b542a3c702d3fca11fc73f994737a /net/ipv6/icmp.c | |
parent | 4a6ad7a141cbee2cf074e6cf8dc527b231b69ece (diff) | |
download | linux-fsl-qoriq-98c6d1b261e74750e6c56ede26dc295201c4a8b2.tar.xz |
[NETNS]: Make icmpv6_sk per namespace.
All preparations are done. Now just add a hook to perform an
initialization on namespace startup and replace icmpv6_sk macro with
proper inline call. Actual namespace the packet belongs too will be
passed later along with the one for the routing.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/icmp.c')
-rw-r--r-- | net/ipv6/icmp.c | 68 |
1 files changed, 47 insertions, 21 deletions
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 3eb594d..9f55a965 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -80,8 +80,10 @@ EXPORT_SYMBOL(icmpv6msg_statistics); * * On SMP we have one ICMP socket per-cpu. */ -static struct sock **__icmpv6_sk = NULL; -#define icmpv6_sk (__icmpv6_sk[smp_processor_id()]) +static inline struct sock *icmpv6_sk(struct net *net) +{ + return net->ipv6.icmp_sk[smp_processor_id()]; +} static int icmpv6_rcv(struct sk_buff *skb); @@ -389,7 +391,7 @@ void icmpv6_send(struct sk_buff *skb, int type, int code, __u32 info, fl.fl_icmp_code = code; security_skb_classify_flow(skb, &fl); - sk = icmpv6_sk; + sk = icmpv6_sk(&init_net); np = inet6_sk(sk); if (icmpv6_xmit_lock(sk)) @@ -535,7 +537,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb) fl.fl_icmp_type = ICMPV6_ECHO_REPLY; security_skb_classify_flow(skb, &fl); - sk = icmpv6_sk; + sk = icmpv6_sk(&init_net); np = inet6_sk(sk); if (icmpv6_xmit_lock(sk)) @@ -780,13 +782,14 @@ drop_no_count: */ static struct lock_class_key icmpv6_socket_sk_dst_lock_key; -int __init icmpv6_init(void) +static int __net_init icmpv6_sk_init(struct net *net) { struct sock *sk; int err, i, j; - __icmpv6_sk = kzalloc(nr_cpu_ids * sizeof(struct sock *), GFP_KERNEL); - if (__icmpv6_sk == NULL) + net->ipv6.icmp_sk = + kzalloc(nr_cpu_ids * sizeof(struct sock *), GFP_KERNEL); + if (net->ipv6.icmp_sk == NULL) return -ENOMEM; for_each_possible_cpu(i) { @@ -801,8 +804,8 @@ int __init icmpv6_init(void) goto fail; } - __icmpv6_sk[i] = sk = sock->sk; - sk_change_net(sk, &init_net); + net->ipv6.icmp_sk[i] = sk = sock->sk; + sk_change_net(sk, net); sk->sk_allocation = GFP_ATOMIC; /* @@ -822,33 +825,56 @@ int __init icmpv6_init(void) sk->sk_prot->unhash(sk); } - - - if (inet6_add_protocol(&icmpv6_protocol, IPPROTO_ICMPV6) < 0) { - printk(KERN_ERR "Failed to register ICMP6 protocol\n"); - err = -EAGAIN; - goto fail; - } - return 0; fail: for (j = 0; j < i; j++) - sk_release_kernel(__icmpv6_sk[j]); - + sk_release_kernel(net->ipv6.icmp_sk[j]); + kfree(net->ipv6.icmp_sk); return err; } -void icmpv6_cleanup(void) +static void __net_exit icmpv6_sk_exit(struct net *net) { int i; for_each_possible_cpu(i) { - sk_release_kernel(__icmpv6_sk[i]); + sk_release_kernel(net->ipv6.icmp_sk[i]); } + kfree(net->ipv6.icmp_sk); +} + +static struct pernet_operations __net_initdata icmpv6_sk_ops = { + .init = icmpv6_sk_init, + .exit = icmpv6_sk_exit, +}; + +int __init icmpv6_init(void) +{ + int err; + + err = register_pernet_subsys(&icmpv6_sk_ops); + if (err < 0) + return err; + + err = -EAGAIN; + if (inet6_add_protocol(&icmpv6_protocol, IPPROTO_ICMPV6) < 0) + goto fail; + return 0; + +fail: + printk(KERN_ERR "Failed to register ICMP6 protocol\n"); + unregister_pernet_subsys(&icmpv6_sk_ops); + return err; +} + +void __exit icmpv6_cleanup(void) +{ + unregister_pernet_subsys(&icmpv6_sk_ops); inet6_del_protocol(&icmpv6_protocol, IPPROTO_ICMPV6); } + static const struct icmp6_err { int err; int fatal; |