+ if (x->sel.family != AF_UNSPEC) {
+ inner_mode = xfrm_get_mode(x->props.mode, x->sel.family);
+ if (inner_mode == NULL)
+ goto error;
+
+ if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL) &&
+ family != x->sel.family) {
+ xfrm_put_mode(inner_mode);
+ goto error;
+ }
+
+ x->inner_mode = inner_mode;
+ } else {
+ struct xfrm_mode *inner_mode_iaf;
+
+ inner_mode = xfrm_get_mode(x->props.mode, AF_INET);
+ if (inner_mode == NULL)
+ goto error;
+
+ if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL)) {
+ xfrm_put_mode(inner_mode);
+ goto error;
+ }
+
+ inner_mode_iaf = xfrm_get_mode(x->props.mode, AF_INET6);
+ if (inner_mode_iaf == NULL)
+ goto error;
+
+ 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;
+ }
+ }