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Subject[PATCH v4 16/27] IB/Verbs: Use management helper cap_ib_mad()

Introduce helper cap_ib_mad() to help us check if the port of an
IB device support Infiniband Management Datagrams.

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/mad.c | 6 +++---
drivers/infiniband/core/user_mad.c | 6 +++---
include/rdma/ib_verbs.h | 15 +++++++++++++++
3 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index d451a47..750ad3e 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -3066,7 +3066,7 @@ static void ib_mad_init_device(struct ib_device *device)
}

for (i = start; i <= end; i++) {
- if (!rdma_ib_or_iboe(device, i))
+ if (!cap_ib_mad(device, i))
continue;

if (ib_mad_port_open(device, i)) {
@@ -3087,7 +3087,7 @@ error_agent:

error:
while (--i >= start) {
- if (!rdma_ib_or_iboe(device, i))
+ if (!cap_ib_mad(device, i))
continue;

if (ib_agent_port_close(device, i))
@@ -3110,7 +3110,7 @@ static void ib_mad_remove_device(struct ib_device *device)
cur_port = 1;
}
for (i = 0; i < num_ports; i++, cur_port++) {
- if (!rdma_ib_or_iboe(device, i))
+ if (!cap_ib_mad(device, i))
continue;

if (ib_agent_port_close(device, cur_port))
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index 71fc8ba..b52884b 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -1294,7 +1294,7 @@ static void ib_umad_add_one(struct ib_device *device)
umad_dev->end_port = e;

for (i = s; i <= e; ++i) {
- if (!rdma_ib_or_iboe(device, i))
+ if (!cap_ib_mad(device, i))
continue;

umad_dev->port[i - s].umad_dev = umad_dev;
@@ -1317,7 +1317,7 @@ static void ib_umad_add_one(struct ib_device *device)

err:
while (--i >= s) {
- if (!rdma_ib_or_iboe(device, i))
+ if (!cap_ib_mad(device, i))
continue;

ib_umad_kill_port(&umad_dev->port[i - s]);
@@ -1335,7 +1335,7 @@ static void ib_umad_remove_one(struct ib_device *device)
return;

for (i = 0; i <= umad_dev->end_port - umad_dev->start_port; ++i) {
- if (rdma_ib_or_iboe(device, i))
+ if (cap_ib_mad(device, i))
ib_umad_kill_port(&umad_dev->port[i]);
}

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index a12e876..624e963 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1773,6 +1773,21 @@ static inline int rdma_ib_or_iboe(struct ib_device *device, u8 port_num)
return (tp == RDMA_TRANSPORT_IB || tp == RDMA_TRANSPORT_IBOE);
}

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