提交 ccf9b3b8 编写于 作者: S Steffen Klassert 提交者: David S. Miller

xfrm: Add a XFRM_STATE_AF_UNSPEC flag to xfrm_usersa_info

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: NSteffen Klassert <steffen.klassert@secunet.com>
Acked-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 0ce28553
......@@ -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 {
......
......@@ -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;
}
/*
......
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