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authorMartin Willi <martin@strongswan.org>2008-12-04 02:38:07 +0300
committerDavid S. Miller <davem@davemloft.net>2008-12-04 02:38:07 +0300
commitd81d228567f55af517796638075dbbce9b40d7af (patch)
tree1c904a111ca0a494151b83cdb51792f70fe39835 /net
parent29fa0b301bc823016d1a3bed41c36a8977ef9947 (diff)
downloadlinux-d81d228567f55af517796638075dbbce9b40d7af.tar.xz
xfrm: Accept XFRM_STATE_AF_UNSPEC SAs on IPv4/IPv6 only hosts
Installing SAs using the XFRM_STATE_AF_UNSPEC fails on hosts with support for one address family only. This patch accepts such SAs, even if the processing of not supported packets will fail. Signed-off-by: Martin Willi <martin@strongswan.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/xfrm/xfrm_state.c26
1 files changed, 11 insertions, 15 deletions
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 2fd57f8f77c1..e25ff62ab2a6 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -2022,8 +2022,9 @@ int xfrm_init_state(struct xfrm_state *x)
x->inner_mode = inner_mode;
} else {
struct xfrm_mode *inner_mode_iaf;
+ int iafamily = AF_INET;
- inner_mode = xfrm_get_mode(x->props.mode, AF_INET);
+ inner_mode = xfrm_get_mode(x->props.mode, x->props.family);
if (inner_mode == NULL)
goto error;
@@ -2031,22 +2032,17 @@ int xfrm_init_state(struct xfrm_state *x)
xfrm_put_mode(inner_mode);
goto error;
}
+ x->inner_mode = inner_mode;
- inner_mode_iaf = xfrm_get_mode(x->props.mode, AF_INET6);
- if (inner_mode_iaf == NULL)
- goto error;
+ if (x->props.family == AF_INET)
+ iafamily = AF_INET6;
- if (!(inner_mode_iaf->flags & XFRM_MODE_FLAG_TUNNEL)) {
- xfrm_put_mode(inner_mode_iaf);
- goto error;
- }
-
- if (x->props.family == AF_INET) {
- x->inner_mode = inner_mode;
- x->inner_mode_iaf = inner_mode_iaf;
- } else {
- x->inner_mode = inner_mode_iaf;
- x->inner_mode_iaf = inner_mode;
+ inner_mode_iaf = xfrm_get_mode(x->props.mode, iafamily);
+ if (inner_mode_iaf) {
+ if (inner_mode_iaf->flags & XFRM_MODE_FLAG_TUNNEL)
+ x->inner_mode_iaf = inner_mode_iaf;
+ else
+ xfrm_put_mode(inner_mode_iaf);
}
}