5 * YOSHIFUJI Hideaki @USAGI
6 * Split up af-specific portion
10 #include <linux/slab.h>
14 static kmem_cache_t
*secpath_cachep
;
16 void __secpath_destroy(struct sec_path
*sp
)
19 for (i
= 0; i
< sp
->len
; i
++)
20 xfrm_state_put(sp
->x
[i
].xvec
);
21 kmem_cache_free(secpath_cachep
, sp
);
24 struct sec_path
*secpath_dup(struct sec_path
*src
)
28 sp
= kmem_cache_alloc(secpath_cachep
, SLAB_ATOMIC
);
36 memcpy(sp
, src
, sizeof(*sp
));
37 for (i
= 0; i
< sp
->len
; i
++)
38 xfrm_state_hold(sp
->x
[i
].xvec
);
40 atomic_set(&sp
->refcnt
, 1);
44 /* Fetch spi and seq from ipsec header */
46 int xfrm_parse_spi(struct sk_buff
*skb
, u8 nexthdr
, u32
*spi
, u32
*seq
)
48 int offset
, offset_seq
;
52 offset
= offsetof(struct ip_auth_hdr
, spi
);
53 offset_seq
= offsetof(struct ip_auth_hdr
, seq_no
);
56 offset
= offsetof(struct ip_esp_hdr
, spi
);
57 offset_seq
= offsetof(struct ip_esp_hdr
, seq_no
);
60 if (!pskb_may_pull(skb
, sizeof(struct ip_comp_hdr
)))
62 *spi
= ntohl(ntohs(*(u16
*)(skb
->h
.raw
+ 2)));
69 if (!pskb_may_pull(skb
, 16))
72 *spi
= *(u32
*)(skb
->h
.raw
+ offset
);
73 *seq
= *(u32
*)(skb
->h
.raw
+ offset_seq
);
77 void __init
xfrm_input_init(void)
79 secpath_cachep
= kmem_cache_create("secpath_cache",
80 sizeof(struct sec_path
),
81 0, SLAB_HWCACHE_ALIGN
,
84 panic("XFRM: failed to allocate secpath_cache\n");