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Subject[PATCH v3 19/28] IB/Verbs: Use management helper cap_iw_cm()

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

Cc: Steve Wise <swise@opengridcomputing.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Cc: Doug Ledford <dledford@redhat.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Michael Wang <yun.wang@profitbricks.com>
---
drivers/infiniband/core/cma.c | 17 ++++++++---------
include/rdma/ib_verbs.h | 15 +++++++++++++++
2 files changed, 23 insertions(+), 9 deletions(-)

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index ccd319a..4f4a420 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -776,8 +776,7 @@ 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_tech_iwarp(id_priv->id.device,
- id_priv->id.port_num)) {
+ } else if (cap_iw_cm(id_priv->id.device, id_priv->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;
@@ -1059,8 +1058,8 @@ void rdma_destroy_id(struct rdma_cm_id *id)
if (cap_ib_cm(id_priv->id.device, id_priv->id.port_num)) {
if (id_priv->cm_id.ib)
ib_destroy_cm_id(id_priv->cm_id.ib);
- } else if (rdma_tech_iwarp(id_priv->id.device,
- id_priv->id.port_num)) {
+ } else if (cap_iw_cm(id_priv->id.device,
+ id_priv->id.port_num)) {
if (id_priv->cm_id.iw)
iw_destroy_cm_id(id_priv->cm_id.iw);
}
@@ -2545,7 +2544,7 @@ int rdma_listen(struct rdma_cm_id *id, int backlog)
ret = cma_ib_listen(id_priv);
if (ret)
goto err;
- } else if (rdma_tech_iwarp(id->device, id->port_num)) {
+ } else if (cap_iw_cm(id->device, id->port_num)) {
ret = cma_iw_listen(id_priv, backlog);
if (ret)
goto err;
@@ -2890,7 +2889,7 @@ 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_tech_iwarp(id->device, id->port_num))
+ } else if (cap_iw_cm(id->device, id->port_num))
ret = cma_connect_iw(id_priv, conn_param);
else
ret = -ENOSYS;
@@ -3012,7 +3011,7 @@ int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
else
ret = cma_rep_recv(id_priv);
}
- } else if (rdma_tech_iwarp(id->device, id->port_num))
+ } else if (cap_iw_cm(id->device, id->port_num))
ret = cma_accept_iw(id_priv, conn_param);
else
ret = -ENOSYS;
@@ -3067,7 +3066,7 @@ 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_tech_iwarp(id->device, id->port_num)) {
+ } else if (cap_iw_cm(id->device, id->port_num)) {
ret = iw_cm_reject(id_priv->cm_id.iw,
private_data, private_data_len);
} else
@@ -3093,7 +3092,7 @@ 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_tech_iwarp(id->device, id->port_num)) {
+ } else if (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 6805e3e..e4999f6 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1818,6 +1818,21 @@ static inline int cap_ib_cm(struct ib_device *device, u8 port_num)
return rdma_ib_or_iboe(device, port_num);
}

+/**
+ * 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 0 when port of the device don't support IWARP
+ * Communication Manager.
+ */
+static inline int cap_iw_cm(struct ib_device *device, u8 port_num)
+{
+ return rdma_tech_iwarp(device, port_num);
+}
+
int ib_query_gid(struct ib_device *device,
u8 port_num, int index, union ib_gid *gid);

--
2.1.0

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