[IPSEC]: Make xfrm_lookup flags argument a bit-field

This patch introduces an enum for bits in the flags argument of xfrm_lookup.
This is so that we can cram more information into it later.

Since all current users use just the values 0 and 1, XFRM_LOOKUP_WAIT has
been added with the value 1 << 0 to represent the current meaning of flags.

The test in __xfrm_lookup has been changed accordingly.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 95dc581861e8..3d516d57b5b2 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1565,7 +1565,7 @@ restart:
                                 xfrm_pol_put(policy);
                                 return -EREMOTE;
                         }
-                        if (err == -EAGAIN && flags) {
+                        if (err == -EAGAIN && (flags & XFRM_LOOKUP_WAIT)) {
                                 DECLARE_WAITQUEUE(wait, current);
 
                                 add_wait_queue(&km_waitq, &wait);