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authorSteffen Klassert <steffen.klassert@secunet.com>2008-07-10 16:55:37 -0700
committerDavid S. Miller <davem@davemloft.net>2008-07-10 16:55:37 -0700
commitccf9b3b83d0e56fbf20c00a08b15031ce13204a7 (patch)
treeecefe07436ac172dc99deb6e77e7a7cfd5c81155
parent0ce28553cc018be5022f51e67c87997f7271534e (diff)
downloadop-kernel-dev-ccf9b3b83d0e56fbf20c00a08b15031ce13204a7.zip
op-kernel-dev-ccf9b3b83d0e56fbf20c00a08b15031ce13204a7.tar.gz
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: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/linux/xfrm.h1
-rw-r--r--net/xfrm/xfrm_user.c3
2 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h
index 2ca6bae..fb0c215 100644
--- a/include/linux/xfrm.h
+++ b/include/linux/xfrm.h
@@ -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 {
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index b976d9e..04c4150 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -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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