forked from Minki/linux
20c2df83d2
Slab destructors were no longer supported after Christoph's
c59def9f22 change. They've been
BUGs for both slab and slub, and slob never supported them
either.
This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
88 lines
1.8 KiB
C
88 lines
1.8 KiB
C
/*
|
|
* xfrm_input.c
|
|
*
|
|
* Changes:
|
|
* YOSHIFUJI Hideaki @USAGI
|
|
* Split up af-specific portion
|
|
*
|
|
*/
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/module.h>
|
|
#include <net/ip.h>
|
|
#include <net/xfrm.h>
|
|
|
|
static struct kmem_cache *secpath_cachep __read_mostly;
|
|
|
|
void __secpath_destroy(struct sec_path *sp)
|
|
{
|
|
int i;
|
|
for (i = 0; i < sp->len; i++)
|
|
xfrm_state_put(sp->xvec[i]);
|
|
kmem_cache_free(secpath_cachep, sp);
|
|
}
|
|
EXPORT_SYMBOL(__secpath_destroy);
|
|
|
|
struct sec_path *secpath_dup(struct sec_path *src)
|
|
{
|
|
struct sec_path *sp;
|
|
|
|
sp = kmem_cache_alloc(secpath_cachep, GFP_ATOMIC);
|
|
if (!sp)
|
|
return NULL;
|
|
|
|
sp->len = 0;
|
|
if (src) {
|
|
int i;
|
|
|
|
memcpy(sp, src, sizeof(*sp));
|
|
for (i = 0; i < sp->len; i++)
|
|
xfrm_state_hold(sp->xvec[i]);
|
|
}
|
|
atomic_set(&sp->refcnt, 1);
|
|
return sp;
|
|
}
|
|
EXPORT_SYMBOL(secpath_dup);
|
|
|
|
/* Fetch spi and seq from ipsec header */
|
|
|
|
int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq)
|
|
{
|
|
int offset, offset_seq;
|
|
|
|
switch (nexthdr) {
|
|
case IPPROTO_AH:
|
|
offset = offsetof(struct ip_auth_hdr, spi);
|
|
offset_seq = offsetof(struct ip_auth_hdr, seq_no);
|
|
break;
|
|
case IPPROTO_ESP:
|
|
offset = offsetof(struct ip_esp_hdr, spi);
|
|
offset_seq = offsetof(struct ip_esp_hdr, seq_no);
|
|
break;
|
|
case IPPROTO_COMP:
|
|
if (!pskb_may_pull(skb, sizeof(struct ip_comp_hdr)))
|
|
return -EINVAL;
|
|
*spi = htonl(ntohs(*(__be16*)(skb_transport_header(skb) + 2)));
|
|
*seq = 0;
|
|
return 0;
|
|
default:
|
|
return 1;
|
|
}
|
|
|
|
if (!pskb_may_pull(skb, 16))
|
|
return -EINVAL;
|
|
|
|
*spi = *(__be32*)(skb_transport_header(skb) + offset);
|
|
*seq = *(__be32*)(skb_transport_header(skb) + offset_seq);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(xfrm_parse_spi);
|
|
|
|
void __init xfrm_input_init(void)
|
|
{
|
|
secpath_cachep = kmem_cache_create("secpath_cache",
|
|
sizeof(struct sec_path),
|
|
0, SLAB_HWCACHE_ALIGN|SLAB_PANIC,
|
|
NULL);
|
|
}
|