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[IPSEC]: Move flow construction into xfrm_dst_lookup

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This patch moves the flow construction from the callers of
xfrm_dst_lookup into that function.  It also changes xfrm_dst_lookup
so that it takes an xfrm state as its argument instead of explicit
addresses.

This removes any address-specific logic from the callers of
xfrm_dst_lookup which is needed to correctly support inter-family
transforms.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu
2007-11-13 21:37:28 -08:00
committed by David S. Miller
parent f04e7e8d7f
commit 66cdb3ca27
4 changed files with 90 additions and 120 deletions
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10
include/net/xfrm.h
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@@ -233,7 +233,8 @@ struct xfrm_policy_afinfo {
unsigned short family;
struct dst_ops *dst_ops;
void (*garbage_collect)(void);
int (*dst_lookup)(struct xfrm_dst **dst, struct flowi *fl);
struct dst_entry *(*dst_lookup)(int tos, xfrm_address_t *saddr,
xfrm_address_t *daddr);
int (*get_saddr)(xfrm_address_t *saddr, xfrm_address_t *daddr);
struct dst_entry *(*find_bundle)(struct flowi *fl, struct xfrm_policy *policy);
int (*bundle_create)(struct xfrm_policy *policy,
@@ -1079,7 +1080,6 @@ extern int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb,
#ifdef CONFIG_XFRM
extern int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb);
extern int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen);
extern int xfrm_dst_lookup(struct xfrm_dst **dst, struct flowi *fl, unsigned short family);
#else
static inline int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen)
{
@@ -1092,13 +1092,9 @@ static inline int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb)
kfree_skb(skb);
return 0;
}
static inline int xfrm_dst_lookup(struct xfrm_dst **dst, struct flowi *fl, unsigned short family)
{
return -EINVAL;
}
#endif
extern struct dst_entry *xfrm_dst_lookup(struct xfrm_state *x, int tos);
struct xfrm_policy *xfrm_policy_alloc(gfp_t gfp);
extern int xfrm_policy_walk(u8 type, int (*func)(struct xfrm_policy *, int, int, void*), void *);
int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl);