[IPSEC]: Fix inter address family IPsec tunnel handling.
Signed-off-by: Kazunori MIYAZAWA <kazunori@miyazawa.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 7ba65e8..58f1f93 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -388,6 +388,8 @@
kfree(x->coaddr);
if (x->inner_mode)
xfrm_put_mode(x->inner_mode);
+ if (x->inner_mode_iaf)
+ xfrm_put_mode(x->inner_mode_iaf);
if (x->outer_mode)
xfrm_put_mode(x->outer_mode);
if (x->type) {
@@ -523,6 +525,8 @@
x->lft.hard_packet_limit = XFRM_INF;
x->replay_maxage = 0;
x->replay_maxdiff = 0;
+ x->inner_mode = NULL;
+ x->inner_mode_iaf = NULL;
spin_lock_init(&x->lock);
}
return x;
@@ -796,7 +800,7 @@
selector.
*/
if (x->km.state == XFRM_STATE_VALID) {
- if (!xfrm_selector_match(&x->sel, fl, x->sel.family) ||
+ if ((x->sel.family && !xfrm_selector_match(&x->sel, fl, x->sel.family)) ||
!security_xfrm_state_pol_flow_match(x, pol, fl))
continue;
if (!best ||
@@ -1944,6 +1948,7 @@
int xfrm_init_state(struct xfrm_state *x)
{
struct xfrm_state_afinfo *afinfo;
+ struct xfrm_mode *inner_mode;
int family = x->props.family;
int err;
@@ -1962,13 +1967,48 @@
goto error;
err = -EPROTONOSUPPORT;
- x->inner_mode = xfrm_get_mode(x->props.mode, x->sel.family);
- if (x->inner_mode == NULL)
- goto error;
- if (!(x->inner_mode->flags & XFRM_MODE_FLAG_TUNNEL) &&
- family != x->sel.family)
- goto error;
+ 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;
+ }
+ }
x->type = xfrm_get_type(x->id.proto, family);
if (x->type == NULL)