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");