Introduce helper cap_ib_mad() to help us check if the port of an
IB device support Infiniband Management Datagrams.
Reform ib_umad_add_one() to fit per-port-check method better.
Cc: Jason Gunthorpe <jguntho...@obsidianresearch.com>
Cc: Doug Ledford <dledf...@redhat.com>
Cc: Ira Weiny <ira.we...@intel.com>
Cc: Sean Hefty <sean.he...@intel.com>
Signed-off-by: Michael Wang <yun.w...@profitbricks.com>
---
drivers/infiniband/core/mad.c | 18 +++++++++---------
drivers/infiniband/core/user_mad.c | 26 ++++++++++++++++++++------
include/rdma/ib_verbs.h | 15 +++++++++++++++
3 files changed, 44 insertions(+), 15 deletions(-)
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 74c30f4..ef0c0c5 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -3057,9 +3057,6 @@ static void ib_mad_init_device(struct ib_device *device)
{
int start, end, i;
- if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
- return;
-
if (device->node_type == RDMA_NODE_IB_SWITCH) {
start = 0;
end = 0;
@@ -3069,6 +3066,9 @@ static void ib_mad_init_device(struct ib_device *device)
}
for (i = start; i <= end; i++) {
+ if (!cap_ib_mad(device, i))
+ continue;
+
if (ib_mad_port_open(device, i)) {
dev_err(&device->dev, "Couldn't open port %d\n", i);
goto error;
@@ -3086,15 +3086,15 @@ error_agent:
dev_err(&device->dev, "Couldn't close port %d\n", i);
error:
- i--;
+ while (--i >= start) {
+ if (!cap_ib_mad(device, i))
+ continue;
- while (i >= start) {
if (ib_agent_port_close(device, i))
dev_err(&device->dev,
"Couldn't close port %d for agents\n", i);
if (ib_mad_port_close(device, i))
dev_err(&device->dev, "Couldn't close port %d\n", i);
- i--;
}
}
@@ -3102,9 +3102,6 @@ static void ib_mad_remove_device(struct ib_device *device)
{
int i, num_ports, cur_port;
- if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
- return;
-
if (device->node_type == RDMA_NODE_IB_SWITCH) {
num_ports = 1;
cur_port = 0;
@@ -3113,6 +3110,9 @@ static void ib_mad_remove_device(struct ib_device *device)
cur_port = 1;
}
for (i = 0; i < num_ports; i++, cur_port++) {
+ if (!cap_ib_mad(device, i))
+ continue;
+
if (ib_agent_port_close(device, cur_port))
dev_err(&device->dev,
"Couldn't close port %d for agents\n",
diff --git a/drivers/infiniband/core/user_mad.c
b/drivers/infiniband/core/user_mad.c
index 928cdd2..b52884b 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -1273,9 +1273,7 @@ static void ib_umad_add_one(struct ib_device *device)
{
struct ib_umad_device *umad_dev;
int s, e, i;
-
- if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
- return;
+ int count = 0;
if (device->node_type == RDMA_NODE_IB_SWITCH)
s = e = 0;
@@ -1296,11 +1294,21 @@ static void ib_umad_add_one(struct ib_device *device)
umad_dev->end_port = e;
for (i = s; i <= e; ++i) {
+ if (!cap_ib_mad(device, i))
+ continue;
+
umad_dev->port[i - s].umad_dev = umad_dev;
if (ib_umad_init_port(device, i, umad_dev,
&umad_dev->port[i - s]))
goto err;
+
+ count++;
+ }
+
+ if (!count) {
+ kobject_put(&umad_dev->kobj);
+ return;
}
ib_set_client_data(device, &umad_client, umad_dev);
@@ -1308,8 +1316,12 @@ static void ib_umad_add_one(struct ib_device *device)
return;
err:
- while (--i >= s)
+ while (--i >= s) {
+ if (!cap_ib_mad(device, i))
+ continue;
+
ib_umad_kill_port(&umad_dev->port[i - s]);
+ }
kobject_put(&umad_dev->kobj);
}
@@ -1322,8 +1334,10 @@ static void ib_umad_remove_one(struct ib_device *device)
if (!umad_dev)
return;
- for (i = 0; i <= umad_dev->end_port - umad_dev->start_port; ++i)
- ib_umad_kill_port(&umad_dev->port[i]);
+ for (i = 0; i <= umad_dev->end_port - umad_dev->start_port; ++i) {
+ if (cap_ib_mad(device, i))
+ ib_umad_kill_port(&umad_dev->port[i]);
+ }
kobject_put(&umad_dev->kobj);
}
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 780b3b7..4013933 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1773,6 +1773,21 @@ static inline int rdma_ib_mgmt(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_mgmt(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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