From d81d228567f55af517796638075dbbce9b40d7af Mon Sep 17 00:00:00 2001 From: Martin Willi Date: Wed, 3 Dec 2008 15:38:07 -0800 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- net/xfrm/xfrm_state.c | 26 +++++++++++--------------- 1 file 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); } } -- GitLab