projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| dd705072 PNA |
1 | /* |
| 2 | * (C) 2012 by Pablo Neira Ayuso <pablo@netfilter.org> | |
| 3 | * (C) 2012 by Vyatta Inc. <http://www.vyatta.com> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License version 2 as | |
| 7 | * published by the Free Software Foundation (or any later at your option). | |
| 8 | */ | |
| 9 | ||
| 10 | #include <linux/types.h> | |
| 11 | #include <linux/netfilter.h> | |
| 12 | #include <linux/skbuff.h> | |
| 13 | #include <linux/vmalloc.h> | |
| 14 | #include <linux/stddef.h> | |
| 15 | #include <linux/err.h> | |
| 16 | #include <linux/percpu.h> | |
| 17 | #include <linux/kernel.h> | |
| 18 | #include <linux/netdevice.h> | |
| 19 | #include <linux/slab.h> | |
| 20 | #include <linux/export.h> | |
| 21 | ||
| 22 | #include <net/netfilter/nf_conntrack.h> | |
| 23 | #include <net/netfilter/nf_conntrack_core.h> | |
| 24 | #include <net/netfilter/nf_conntrack_extend.h> | |
| 25 | #include <net/netfilter/nf_conntrack_timeout.h> | |
| 26 | ||
| 6c1fd7dc | 27 | struct nf_ct_timeout * |
| 19576c94 | 28 | (*nf_ct_timeout_find_get_hook)(struct net *net, const char *name) __read_mostly; |
| dd705072 PNA |
29 | EXPORT_SYMBOL_GPL(nf_ct_timeout_find_get_hook); |
| 30 | ||
| 6c1fd7dc | 31 | void (*nf_ct_timeout_put_hook)(struct nf_ct_timeout *timeout) __read_mostly; |
| dd705072 PNA |
32 | EXPORT_SYMBOL_GPL(nf_ct_timeout_put_hook); |
| 33 | ||
| 4e665afb HS |
34 | static int untimeout(struct nf_conn *ct, void *timeout) |
| 35 | { | |
| 36 | struct nf_conn_timeout *timeout_ext = nf_ct_timeout_find(ct); | |
| 37 | ||
| 38 | if (timeout_ext && (!timeout || timeout_ext->timeout == timeout)) | |
| 39 | RCU_INIT_POINTER(timeout_ext->timeout, NULL); | |
| 40 | ||
| 41 | /* We are not intended to delete this conntrack. */ | |
| 42 | return 0; | |
| 43 | } | |
| 44 | ||
| 6c1fd7dc | 45 | void nf_ct_untimeout(struct net *net, struct nf_ct_timeout *timeout) |
| 4e665afb HS |
46 | { |
| 47 | nf_ct_iterate_cleanup_net(net, untimeout, timeout, 0, 0); | |
| 48 | } | |
| 49 | EXPORT_SYMBOL_GPL(nf_ct_untimeout); | |
| 50 | ||
| 23f671a1 | 51 | static const struct nf_ct_ext_type timeout_extend = { |
| dd705072 PNA |
52 | .len = sizeof(struct nf_conn_timeout), |
| 53 | .align = __alignof__(struct nf_conn_timeout), | |
| 54 | .id = NF_CT_EXT_TIMEOUT, | |
| 55 | }; | |
| 56 | ||
| 8684094c | 57 | int nf_conntrack_timeout_init(void) |
| dd705072 | 58 | { |
| 8684094c G |
59 | int ret = nf_ct_extend_register(&timeout_extend); |
| 60 | if (ret < 0) | |
| 61 | pr_err("nf_ct_timeout: Unable to register timeout extension.\n"); | |
| 62 | return ret; | |
| dd705072 PNA |
63 | } |
| 64 | ||
| 8684094c | 65 | void nf_conntrack_timeout_fini(void) |
| dd705072 | 66 | { |
| 8684094c | 67 | nf_ct_extend_unregister(&timeout_extend); |
| dd705072 | 68 | } |