From 81566e8322c3f6c6f9a2277fe0e440fee8d917bd Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Tue, 22 Jan 2008 06:12:39 -0800 Subject: [NETNS][FRAGS]: Make the pernet subsystem for fragments. On namespace start we mainly prepare the ctl variables. When the namespace is stopped we have to kill all the fragments that point to this namespace. The inet_frags_exit_net() handles it. Signed-off-by: Pavel Emelyanov Signed-off-by: David S. Miller --- net/ipv4/inet_fragment.c | 7 +++++++ net/ipv4/ip_fragment.c | 13 ++++++++++++- net/ipv6/reassembly.c | 14 +++++++++++++- 3 files changed, 32 insertions(+), 2 deletions(-) (limited to 'net') diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c index f1b95e128772..724d69aed031 100644 --- a/net/ipv4/inet_fragment.c +++ b/net/ipv4/inet_fragment.c @@ -83,6 +83,13 @@ void inet_frags_fini(struct inet_frags *f) } EXPORT_SYMBOL(inet_frags_fini); +void inet_frags_exit_net(struct netns_frags *nf, struct inet_frags *f) +{ + nf->low_thresh = 0; + inet_frag_evictor(nf, f); +} +EXPORT_SYMBOL(inet_frags_exit_net); + static inline void fq_unlink(struct inet_frag_queue *fq, struct inet_frags *f) { write_lock(&f->lock); diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index 29b4b0972e44..a2e92f9709db 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -713,9 +713,20 @@ static int ipv4_frags_init_net(struct net *net) return ip4_frags_ctl_register(net); } +static void ipv4_frags_exit_net(struct net *net) +{ + ip4_frags_ctl_unregister(net); + inet_frags_exit_net(&net->ipv4.frags, &ip4_frags); +} + +static struct pernet_operations ip4_frags_ops = { + .init = ipv4_frags_init_net, + .exit = ipv4_frags_exit_net, +}; + void __init ipfrag_init(void) { - ipv4_frags_init_net(&init_net); + register_pernet_subsys(&ip4_frags_ops); ip4_frags.hashfn = ip4_hashfn; ip4_frags.constructor = ip4_frag_init; ip4_frags.destructor = ip4_frag_free; diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c index 0c4bc46dee0c..f936d045a39d 100644 --- a/net/ipv6/reassembly.c +++ b/net/ipv6/reassembly.c @@ -728,6 +728,17 @@ static int ipv6_frags_init_net(struct net *net) return ip6_frags_sysctl_register(net); } +static void ipv6_frags_exit_net(struct net *net) +{ + ip6_frags_sysctl_unregister(net); + inet_frags_exit_net(&net->ipv6.frags, &ip6_frags); +} + +static struct pernet_operations ip6_frags_ops = { + .init = ipv6_frags_init_net, + .exit = ipv6_frags_exit_net, +}; + int __init ipv6_frag_init(void) { int ret; @@ -736,7 +747,7 @@ int __init ipv6_frag_init(void) if (ret) goto out; - ipv6_frags_init_net(&init_net); + register_pernet_subsys(&ip6_frags_ops); ip6_frags.hashfn = ip6_hashfn; ip6_frags.constructor = ip6_frag_init; @@ -754,5 +765,6 @@ out: void ipv6_frag_exit(void) { inet_frags_fini(&ip6_frags); + unregister_pernet_subsys(&ip6_frags_ops); inet6_del_protocol(&frag_protocol, IPPROTO_FRAGMENT); } -- cgit v1.2.3