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Subject[PATCH v4 22/27] IB/Verbs: Use management helper cap_ipoib()

Introduce helper cap_ipoib() to help us check if the port of an
IB device support IP over Infiniband.

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/ulp/ipoib/ipoib_main.c | 2 +-
include/rdma/ib_verbs.h | 15 +++++++++++++++
2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 60b379d..a9812df 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1671,7 +1671,7 @@ static void ipoib_add_one(struct ib_device *device)
}

for (p = s; p <= e; ++p) {
- if (!rdma_tech_ib(device, p))
+ if (!cap_ipoib(device, p))
continue;
dev = ipoib_add_port("ib%d", device, p);
if (!IS_ERR(dev)) {
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index b2cee8d..ac62b3a 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1863,6 +1863,21 @@ static inline int cap_ib_mcast(struct ib_device *device, u8 port_num)
return cap_ib_sa(device, port_num);
}

+/**
+ * cap_ipoib - Check if the port of device has the capability
+ * IP over Infiniband.
+ *
+ * @device: Device to be checked
+ * @port_num: Port number of the device
+ *
+ * Return 0 when port of the device don't support
+ * IP over Infiniband.
+ */
+static inline int cap_ipoib(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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