[linux.git] / net / xfrm / xfrm_hash.c

/* xfrm_hash.c: Common hash table code.
 *
 * Copyright (C) 2006 David S. Miller ([email protected])
 */

#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
#include <linux/vmalloc.h>
#include <linux/slab.h>
#include <linux/xfrm.h>

#include "xfrm_hash.h"

struct hlist_head *xfrm_hash_alloc(unsigned int sz)
{
	struct hlist_head *n;

	if (sz <= PAGE_SIZE)
		n = kzalloc(sz, GFP_KERNEL);
	else if (hashdist)
		n = vzalloc(sz);
	else
		n = (struct hlist_head *)
			__get_free_pages(GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO,
					 get_order(sz));

	return n;
}

void xfrm_hash_free(struct hlist_head *n, unsigned int sz)
{
	if (sz <= PAGE_SIZE)
		kfree(n);
	else if (hashdist)
		vfree(n);
	else
		free_pages((unsigned long)n, get_order(sz));
}
Commit	Line	Data
44e36b42 DM	1	/* xfrm_hash.c: Common hash table code.
	2	*
	3	* Copyright (C) 2006 David S. Miller ([email protected])
	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)
dcaee95a	20	n = kzalloc(sz, GFP_KERNEL);
44e36b42	21	else if (hashdist)
7a1c8e5a	22	n = vzalloc(sz);
44e36b42 DM	23	else
44e36b42 DM	24	n = (struct hlist_head *)
dcaee95a	25	__get_free_pages(GFP_KERNEL \| __GFP_NOWARN \| __GFP_ZERO,
6253db05	26	get_order(sz));
44e36b42	27
44e36b42 DM	28	return n;
	29	}
	30
	31	void xfrm_hash_free(struct hlist_head *n, unsigned int sz)
	32	{
	33	if (sz <= PAGE_SIZE)
	34	kfree(n);
	35	else if (hashdist)
	36	vfree(n);
	37	else
	38	free_pages((unsigned long)n, get_order(sz));
	39	}