Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (46 commits)
  IB/uverbs: Don't serialize with ib_uverbs_idr_mutex
  IB/mthca: Make all device methods truly reentrant
  IB/mthca: Fix memory leak on modify_qp error paths
  IB/uverbs: Factor out common idr code
  IB/uverbs: Don't decrement usecnt on error paths
  IB/uverbs: Release lock on error path
  IB/cm: Use address handle helpers
  IB/sa: Add ib_init_ah_from_path()
  IB: Add ib_init_ah_from_wc()
  IB/ucm: Get rid of duplicate P_Key parameter
  IB/srp: Factor out common request reset code
  IB/srp: Support SRP rev. 10 targets
  [SCSI] srp.h: Add I/O Class values
  IB/fmr: Use device's max_map_map_per_fmr attribute in FMR pool.
  IB/mthca: Fill in max_map_per_fmr device attribute
  IB/ipath: Add client reregister event generation
  IB/mthca: Add client reregister event generation
  IB: Move struct port_info from ipath to <rdma/ib_smi.h>
  IPoIB: Handle client reregister events
  IB: Add client reregister event type
  ...

1 files changed, 28 insertions, 16 deletions

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index b78e7dc69330..468999c38803 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -125,35 +125,47 @@ struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
 }
 EXPORT_SYMBOL(ib_create_ah);
 
-struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
-				   struct ib_grh *grh, u8 port_num)
+int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
+		       struct ib_grh *grh, struct ib_ah_attr *ah_attr)
 {
-	struct ib_ah_attr ah_attr;
 	u32 flow_class;
 	u16 gid_index;
 	int ret;
 
-	memset(&ah_attr, 0, sizeof ah_attr);
-	ah_attr.dlid = wc->slid;
-	ah_attr.sl = wc->sl;
-	ah_attr.src_path_bits = wc->dlid_path_bits;
-	ah_attr.port_num = port_num;
+	memset(ah_attr, 0, sizeof *ah_attr);
+	ah_attr->dlid = wc->slid;
+	ah_attr->sl = wc->sl;
+	ah_attr->src_path_bits = wc->dlid_path_bits;
+	ah_attr->port_num = port_num;
 
 	if (wc->wc_flags & IB_WC_GRH) {
-		ah_attr.ah_flags = IB_AH_GRH;
-		ah_attr.grh.dgid = grh->sgid;
+		ah_attr->ah_flags = IB_AH_GRH;
+		ah_attr->grh.dgid = grh->sgid;
 
-		ret = ib_find_cached_gid(pd->device, &grh->dgid, &port_num,
+		ret = ib_find_cached_gid(device, &grh->dgid, &port_num,
 					 &gid_index);
 		if (ret)
-			return ERR_PTR(ret);
+			return ret;
 
-		ah_attr.grh.sgid_index = (u8) gid_index;
+		ah_attr->grh.sgid_index = (u8) gid_index;
 		flow_class = be32_to_cpu(grh->version_tclass_flow);
-		ah_attr.grh.flow_label = flow_class & 0xFFFFF;
-		ah_attr.grh.traffic_class = (flow_class >> 20) & 0xFF;
-		ah_attr.grh.hop_limit = grh->hop_limit;
+		ah_attr->grh.flow_label = flow_class & 0xFFFFF;
+		ah_attr->grh.hop_limit = grh->hop_limit;
+		ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF;
 	}
+	return 0;
+}
+EXPORT_SYMBOL(ib_init_ah_from_wc);
+
+struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
+				   struct ib_grh *grh, u8 port_num)
+{
+	struct ib_ah_attr ah_attr;
+	int ret;
+
+	ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr);
+	if (ret)
+		return ERR_PTR(ret);
 
 	return ib_create_ah(pd, &ah_attr);
 }