From: Michael Wang <yun.wang@profitbricks.com>
Date: Tue, 5 May 2015 12:50:35 +0000 (+0200)
Subject: IB/Verbs: Use management helper rdma_cap_iw_cm()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=042153306d9d08da67459f187d63a68aefd97388;p=linux-beck.git

IB/Verbs: Use management helper rdma_cap_iw_cm()

Introduce helper rdma_cap_iw_cm() to help us check if the port of an
IB device support IWARP Communication Manager.

Signed-off-by: Michael Wang <yun.wang@profitbricks.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Tested-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Tested-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
---

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 754a96b66608..3998e8bdfcdd 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -754,7 +754,7 @@ int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr,
 
 		if (qp_attr->qp_state == IB_QPS_RTR)
 			qp_attr->rq_psn = id_priv->seq_num;
-	} else if (rdma_protocol_iwarp(id->device, id->port_num)) {
+	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {
 		if (!id_priv->cm_id.iw) {
 			qp_attr->qp_access_flags = 0;
 			*qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS;
@@ -1043,7 +1043,7 @@ void rdma_destroy_id(struct rdma_cm_id *id)
 		if (rdma_cap_ib_cm(id_priv->id.device, 1)) {
 			if (id_priv->cm_id.ib)
 				ib_destroy_cm_id(id_priv->cm_id.ib);
-		} else if (rdma_protocol_iwarp(id_priv->id.device, 1)) {
+		} else if (rdma_cap_iw_cm(id_priv->id.device, 1)) {
 			if (id_priv->cm_id.iw)
 				iw_destroy_cm_id(id_priv->cm_id.iw);
 		}
@@ -2527,7 +2527,7 @@ int rdma_listen(struct rdma_cm_id *id, int backlog)
 			ret = cma_ib_listen(id_priv);
 			if (ret)
 				goto err;
-		} else if (rdma_protocol_iwarp(id->device, 1)) {
+		} else if (rdma_cap_iw_cm(id->device, 1)) {
 			ret = cma_iw_listen(id_priv, backlog);
 			if (ret)
 				goto err;
@@ -2872,7 +2872,7 @@ int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
 			ret = cma_resolve_ib_udp(id_priv, conn_param);
 		else
 			ret = cma_connect_ib(id_priv, conn_param);
-	} else if (rdma_protocol_iwarp(id->device, id->port_num))
+	} else if (rdma_cap_iw_cm(id->device, id->port_num))
 		ret = cma_connect_iw(id_priv, conn_param);
 	else
 		ret = -ENOSYS;
@@ -2994,7 +2994,7 @@ int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
 			else
 				ret = cma_rep_recv(id_priv);
 		}
-	} else if (rdma_protocol_iwarp(id->device, id->port_num))
+	} else if (rdma_cap_iw_cm(id->device, id->port_num))
 		ret = cma_accept_iw(id_priv, conn_param);
 	else
 		ret = -ENOSYS;
@@ -3049,7 +3049,7 @@ int rdma_reject(struct rdma_cm_id *id, const void *private_data,
 			ret = ib_send_cm_rej(id_priv->cm_id.ib,
 					     IB_CM_REJ_CONSUMER_DEFINED, NULL,
 					     0, private_data, private_data_len);
-	} else if (rdma_protocol_iwarp(id->device, id->port_num)) {
+	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {
 		ret = iw_cm_reject(id_priv->cm_id.iw,
 				   private_data, private_data_len);
 	} else
@@ -3075,7 +3075,7 @@ int rdma_disconnect(struct rdma_cm_id *id)
 		/* Initiate or respond to a disconnect. */
 		if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0))
 			ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0);
-	} else if (rdma_protocol_iwarp(id->device, id->port_num)) {
+	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {
 		ret = iw_cm_disconnect(id_priv->cm_id.iw, 0);
 	} else
 		ret = -EINVAL;
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index e349596fd500..cc92a6489136 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1819,6 +1819,21 @@ static inline bool rdma_cap_ib_cm(struct ib_device *device, u8 port_num)
 	return rdma_ib_or_iboe(device, port_num);
 }
 
+/**
+ * rdma_cap_iw_cm - Check if the port of device has the capability IWARP
+ * Communication Manager.
+ *
+ * @device: Device to be checked
+ * @port_num: Port number of the device
+ *
+ * Return false when port of the device don't support IWARP
+ * Communication Manager.
+ */
+static inline bool rdma_cap_iw_cm(struct ib_device *device, u8 port_num)
+{
+	return rdma_protocol_iwarp(device, port_num);
+}
+
 int ib_query_gid(struct ib_device *device,
 		 u8 port_num, int index, union ib_gid *gid);