projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 77d8bf9c ACM |
1 | /* |
| 2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
| 3 | * operating system. INET is implemented using the BSD Socket | |
| 4 | * interface as the means of communication with the user level. | |
| 5 | * | |
| 6 | * Generic INET transport hashtables | |
| 7 | * | |
| 8 | * Authors: Lotsa people, from code originally in tcp | |
| 9 | * | |
| 10 | * This program is free software; you can redistribute it and/or | |
| 11 | * modify it under the terms of the GNU General Public License | |
| 12 | * as published by the Free Software Foundation; either version | |
| 13 | * 2 of the License, or (at your option) any later version. | |
| 14 | */ | |
| 15 | ||
| 16 | #include <linux/config.h> | |
| 17 | #include <linux/slab.h> | |
| 18 | ||
| 19 | #include <net/inet_hashtables.h> | |
| 20 | ||
| 21 | /* | |
| 22 | * Allocate and initialize a new local port bind bucket. | |
| 23 | * The bindhash mutex for snum's hash chain must be held here. | |
| 24 | */ | |
| 25 | struct inet_bind_bucket *inet_bind_bucket_create(kmem_cache_t *cachep, | |
| 26 | struct inet_bind_hashbucket *head, | |
| 27 | const unsigned short snum) | |
| 28 | { | |
| 29 | struct inet_bind_bucket *tb = kmem_cache_alloc(cachep, SLAB_ATOMIC); | |
| 30 | ||
| 31 | if (tb != NULL) { | |
| 32 | tb->port = snum; | |
| 33 | tb->fastreuse = 0; | |
| 34 | INIT_HLIST_HEAD(&tb->owners); | |
| 35 | hlist_add_head(&tb->node, &head->chain); | |
| 36 | } | |
| 37 | return tb; | |
| 38 | } | |
| 39 | ||
| 40 | EXPORT_SYMBOL(inet_bind_bucket_create); | |
| 41 | ||
| 42 | /* | |
| 43 | * Caller must hold hashbucket lock for this tb with local BH disabled | |
| 44 | */ | |
| 45 | void inet_bind_bucket_destroy(kmem_cache_t *cachep, struct inet_bind_bucket *tb) | |
| 46 | { | |
| 47 | if (hlist_empty(&tb->owners)) { | |
| 48 | __hlist_del(&tb->node); | |
| 49 | kmem_cache_free(cachep, tb); | |
| 50 | } | |
| 51 | } |