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authorMasahide NAKAMURA <nakam@linux-ipv6.org>2006-08-24 02:57:28 +0200
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-23 00:06:36 +0200
commitaee5adb4307c4c63a4dc5f3b49984d76f8a71b5b (patch)
treeb2daac197259c535d66749617ede6f8479b355a4 /include
parent[XFRM] STATE: Search by address using source address list. (diff)
downloadlinux-aee5adb4307c4c63a4dc5f3b49984d76f8a71b5b.tar.xz
linux-aee5adb4307c4c63a4dc5f3b49984d76f8a71b5b.zip
[XFRM] STATE: Add a hook to find offset to be inserted header in outbound.
On current kernel, ip6_find_1stfragopt() is used by IPv6 IPsec to find offset to be inserted header in outbound for transport mode. (BTW, no usage may be needed for IPv4 case.) Mobile IPv6 requires another logic for routing header and destination options header respectively. This patch is common platform for the offset and adopts it to IPsec. Based on MIPL2 kernel patch. Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/xfrm.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index d9c40e713184..eed48f832ce1 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -265,6 +265,7 @@ struct xfrm_type
void (*destructor)(struct xfrm_state *);
int (*input)(struct xfrm_state *, struct sk_buff *skb);
int (*output)(struct xfrm_state *, struct sk_buff *pskb);
+ int (*hdr_offset)(struct xfrm_state *, struct sk_buff *, u8 **);
/* Estimate maximal size of result of transformation of a dgram */
u32 (*get_max_size)(struct xfrm_state *, int size);
};
@@ -960,6 +961,8 @@ extern u32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr);
extern void xfrm6_tunnel_free_spi(xfrm_address_t *saddr);
extern u32 xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr);
extern int xfrm6_output(struct sk_buff *skb);
+extern int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb,
+ u8 **prevhdr);
#ifdef CONFIG_XFRM
extern int xfrm4_rcv_encap(struct sk_buff *skb, __u16 encap_type);