tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
15struct 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 *)
25 __get_free_pages(GFP_KERNEL, get_order(sz));
26
27 if (n)
28 memset(n, 0, sz);
29
30 return n;
31}
32
33void xfrm_hash_free(struct hlist_head *n, unsigned int sz)
34{
35 if (sz <= PAGE_SIZE)
36 kfree(n);
37 else if (hashdist)
38 vfree(n);
39 else
40 free_pages((unsigned long)n, get_order(sz));
41}