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Subject[PATCH v5 17/27] IB/Verbs: Use management helper cap_ib_smi()

Introduce helper cap_ib_smi() to help us check if the port of an
IB device support Infiniband Subnet Management Interface.

Cc: Hal Rosenstock <hal@dev.mellanox.co.il>
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/agent.c | 2 +-
drivers/infiniband/core/mad.c | 2 +-
include/rdma/ib_verbs.h | 15 +++++++++++++++
3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/agent.c b/drivers/infiniband/core/agent.c
index ffdef4d..61471ee 100644
--- a/drivers/infiniband/core/agent.c
+++ b/drivers/infiniband/core/agent.c
@@ -156,7 +156,7 @@ int ib_agent_port_open(struct ib_device *device, int port_num)
goto error1;
}

- if (rdma_tech_ib(device, port_num)) {
+ if (cap_ib_smi(device, port_num)) {
/* Obtain send only MAD agent for SMI QP */
port_priv->agent[0] = ib_register_mad_agent(device, port_num,
IB_QPT_SMI, NULL, 0,
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 4315aeb..ee3a05e 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -2938,7 +2938,7 @@ static int ib_mad_port_open(struct ib_device *device,
init_mad_qp(port_priv, &port_priv->qp_info[1]);

cq_size = mad_sendq_size + mad_recvq_size;
- has_smi = rdma_tech_ib(device, port_num);
+ has_smi = cap_ib_smi(device, port_num);
if (has_smi)
cq_size *= 2;

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 624e963..873b9a6 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1788,6 +1788,21 @@ static inline int cap_ib_mad(struct ib_device *device, u8 port_num)
return rdma_ib_or_iboe(device, port_num);
}

+/**
+ * cap_ib_smi - Check if the port of device has the capability Infiniband
+ * Subnet Management Interface.
+ *
+ * @device: Device to be checked
+ * @port_num: Port number of the device
+ *
+ * Return 0 when port of the device don't support Infiniband
+ * Subnet Management Interface.
+ */
+static inline int cap_ib_smi(struct ib_device *device, u8 port_num)
+{
+ return rdma_tech_ib(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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