projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 44e36b42 DM |
1 | /* xfrm_hash.c: Common hash table code. |
| 2 | * | |
| 3 | * Copyright (C) 2006 David S. Miller (davem@davemloft.net) | |
| 4 | */ | |
| 5 | ||
| 6 | #include <linux/kernel.h> | |
| 7 | #include <linux/mm.h> | |
| 8 | #include <linux/bootmem.h> | |
| 9 | #include <linux/vmalloc.h> | |
| 10 | #include <linux/slab.h> | |
| 11 | #include <linux/xfrm.h> | |
| 12 | ||
| 13 | #include "xfrm_hash.h" | |
| 14 | ||
| 15 | struct hlist_head *xfrm_hash_alloc(unsigned int sz) | |
| 16 | { | |
| 17 | struct hlist_head *n; | |
| 18 | ||
| 19 | if (sz <= PAGE_SIZE) | |
| 20 | n = kmalloc(sz, GFP_KERNEL); | |
| 21 | else if (hashdist) | |
| 22 | n = __vmalloc(sz, GFP_KERNEL, PAGE_KERNEL); | |
| 23 | else | |
| 24 | n = (struct hlist_head *) | |
| 6253db05 HX |
25 | __get_free_pages(GFP_KERNEL | __GFP_NOWARN, |
| 26 | get_order(sz)); | |
| 44e36b42 DM |
27 | |
| 28 | if (n) | |
| 29 | memset(n, 0, sz); | |
| 30 | ||
| 31 | return n; | |
| 32 | } | |
| 33 | ||
| 34 | void xfrm_hash_free(struct hlist_head *n, unsigned int sz) | |
| 35 | { | |
| 36 | if (sz <= PAGE_SIZE) | |
| 37 | kfree(n); | |
| 38 | else if (hashdist) | |
| 39 | vfree(n); | |
| 40 | else | |
| 41 | free_pages((unsigned long)n, get_order(sz)); | |
| 42 | } |