net: Add FLOWI_FLAG_CAN_SLEEP.

And set is in contexts where the route resolution can sleep.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 28209b2d254d..77b1942f335b 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1026,6 +1026,7 @@ struct dst_entry *ip6_dst_lookup_flow(struct sock *sk, struct flowi *fl,
         if (final_dst)
                 ipv6_addr_copy(&fl->fl6_dst, final_dst);
         if (want_blackhole) {
+                fl->flags |= FLOWI_FLAG_CAN_SLEEP;
                 err = __xfrm_lookup(sock_net(sk), &dst, fl, sk, XFRM_LOOKUP_WAIT);
                 if (err == -EREMOTE)
                         err = ip6_dst_blackhole(sk, &dst, fl);
@@ -1070,6 +1071,7 @@ struct dst_entry *ip6_sk_dst_lookup_flow(struct sock *sk, struct flowi *fl,
         if (final_dst)
                 ipv6_addr_copy(&fl->fl6_dst, final_dst);
         if (want_blackhole) {
+                fl->flags |= FLOWI_FLAG_CAN_SLEEP;
                 err = __xfrm_lookup(sock_net(sk), &dst, fl, sk, XFRM_LOOKUP_WAIT);
                 if (err == -EREMOTE)
                         err = ip6_dst_blackhole(sk, &dst, fl);