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xfrm: Add a XFRM_STATE_AF_UNSPEC flag to xfrm_usersa_info

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Add a XFRM_STATE_AF_UNSPEC flag to handle the AF_UNSPEC behavior for
the selector family. Userspace applications can set this flag to leave
the selector family of the xfrm_state unspecified.  This can be used
to to handle inter family tunnels if the selector is not set from
userspace.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steffen Klassert 2008-07-10 16:55:37 -07:00 committed by David S. Miller
parent 0ce28553cc
commit ccf9b3b83d
2 changed files with 2 additions and 2 deletions
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1
include/linux/xfrm.h
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@ -339,6 +339,7 @@ struct xfrm_usersa_info {
#define XFRM_STATE_NOPMTUDISC 4
#define XFRM_STATE_WILDRECV 8
#define XFRM_STATE_ICMP 16
#define XFRM_STATE_AF_UNSPEC 32
};
struct xfrm_usersa_id {

3
net/xfrm/xfrm_user.c
View file

@ -277,9 +277,8 @@ static void copy_from_user_state(struct xfrm_state *x, struct xfrm_usersa_info *
memcpy(&x->props.saddr, &p->saddr, sizeof(x->props.saddr));
x->props.flags = p->flags;
if (!x->sel.family)
if (!x->sel.family && !(p->flags & XFRM_STATE_AF_UNSPEC))
x->sel.family = p->family;
}
/*