Introduce helper has_mcast() and cap_mcast() to help us check if an
IB device or it's port support Multicast.
Cc: Jason Gunthorpe <jgunthorpe@xxxxxxxxxxxxxxxxxxxx>
Cc: Doug Ledford <dledford@xxxxxxxxxx>
Cc: Ira Weiny <ira.weiny@xxxxxxxxx>
Cc: Sean Hefty <sean.hefty@xxxxxxxxx>
Signed-off-by: Michael Wang <yun.wang@xxxxxxxxxxxxxxxx>
---
drivers/infiniband/core/cma.c | 2 +-
drivers/infiniband/core/multicast.c | 8 ++++----
include/rdma/ib_verbs.h | 28 ++++++++++++++++++++++++++++
3 files changed, 33 insertions(+), 5 deletions(-)
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 276fb76..cbbc85b 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -3398,7 +3398,7 @@ void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr)
ib_detach_mcast(id->qp,
&mc->multicast.ib->rec.mgid,
be16_to_cpu(mc->multicast.ib->rec.mlid));
- if (rdma_transport_is_ib(id_priv->cma_dev->device)) {
+ if (has_mcast(id_priv->cma_dev->device)) {
switch (rdma_port_get_link_layer(id->device, id->port_num)) {
case IB_LINK_LAYER_INFINIBAND:
ib_sa_free_multicast(mc->multicast.ib);
diff --git a/drivers/infiniband/core/multicast.c b/drivers/infiniband/core/multicast.c
index 17573ff..ffeaf27 100644
--- a/drivers/infiniband/core/multicast.c
+++ b/drivers/infiniband/core/multicast.c
@@ -780,7 +780,7 @@ static void mcast_event_handler(struct ib_event_handler *handler,
int index;
dev = container_of(handler, struct mcast_device, event_handler);
- if (!rdma_port_ll_is_ib(dev->device, event->element.port_num))
+ if (!cap_mcast(dev->device, event->element.port_num))
return;
index = event->element.port_num - dev->start_port;
@@ -807,7 +807,7 @@ static void mcast_add_one(struct ib_device *device)
int i;
int count = 0;
- if (!rdma_transport_is_ib(device))
+ if (!has_mcast(device))
return;
dev = kmalloc(sizeof *dev + device->phys_port_cnt * sizeof *port,
@@ -823,7 +823,7 @@ static void mcast_add_one(struct ib_device *device)
}
for (i = 0; i <= dev->end_port - dev->start_port; i++) {
- if (!rdma_port_ll_is_ib(device, dev->start_port + i))
+ if (!cap_mcast(device, dev->start_port + i))
continue;
port = &dev->port[i];
port->dev = dev;
@@ -861,7 +861,7 @@ static void mcast_remove_one(struct ib_device *device)
flush_workqueue(mcast_wq);
for (i = 0; i <= dev->end_port - dev->start_port; i++) {
- if (rdma_port_ll_is_ib(device, dev->start_port + i)) {
+ if (cap_mcast(device, dev->start_port + i)) {
port = &dev->port[i];
deref_port(port);
wait_for_completion(&port->comp);
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index fa8ffa3..e796104 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1823,6 +1823,19 @@ static inline int has_sa(struct ib_device *device)
}
/**
+ * has_mcast - Check if a device support Multicast.
+ *
+ * @device: Device to be checked
+ *
+ * Return 0 when a device has none port to support
+ * Multicast.
+ */
+static inline int has_mcast(struct ib_device *device)
+{
+ return rdma_transport_is_ib(device);
+}
+
+/**
* cap_smi - Check if the port of device has the capability
* Subnet Management Interface.
*
@@ -1852,6 +1865,21 @@ static inline int cap_sa(struct ib_device *device, u8 port_num)
return rdma_port_ll_is_ib(device, port_num);
}
+/**
+ * cap_mcast - Check if the port of device has the capability
+ * Multicast.
+ *
+ * @device: Device to be checked
+ * @port_num: Port number of the device
+ *
+ * Return 0 when port of the device don't support
+ * Multicast.
+ */
+static inline int cap_mcast(struct ib_device *device, u8 port_num)
+{
+ return rdma_port_ll_is_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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