IB/srp: Add QoS support through service ID

Provide the target service ID when performing a path record query to
support optional QoS capability.  QoS requires support from the SA.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index f6a0514..9ccc638 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -285,6 +285,7 @@
 						   target->srp_host->dev->dev,
 						   target->srp_host->port,
 						   &target->path,
+						   IB_SA_PATH_REC_SERVICE_ID	|
 						   IB_SA_PATH_REC_DGID		|
 						   IB_SA_PATH_REC_SGID		|
 						   IB_SA_PATH_REC_NUMB_PATH	|
@@ -1692,6 +1693,7 @@
 				goto out;
 			}
 			target->service_id = cpu_to_be64(simple_strtoull(p, NULL, 16));
+			target->path.service_id = target->service_id;
 			kfree(p);
 			break;