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Subject[PATCH v5 21/27] IB/Verbs: Use management helper cap_ib_mcast()

Introduce helper cap_ib_mcast() to help us check if the port of an
IB device support Infiniband Multicast.

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

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 8484ae3..58ec946 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -1028,7 +1028,7 @@ static void cma_leave_mc_groups(struct rdma_id_private *id_priv)
mc = container_of(id_priv->mc_list.next,
struct cma_multicast, list);
list_del(&mc->list);
- if (rdma_tech_ib(id_priv->cma_dev->device,
+ if (cap_ib_mcast(id_priv->cma_dev->device,
id_priv->id.port_num)) {
ib_sa_free_multicast(mc->multicast.ib);
kfree(mc);
@@ -3342,7 +3342,7 @@ int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr,
if (rdma_tech_iboe(id->device, id->port_num)) {
kref_init(&mc->mcref);
ret = cma_iboe_join_multicast(id_priv, mc);
- } else if (rdma_tech_ib(id->device, id->port_num))
+ } else if (cap_ib_mcast(id->device, id->port_num))
ret = cma_join_ib_multicast(id_priv, mc);
else
ret = -ENOSYS;
@@ -3376,7 +3376,7 @@ void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr)

BUG_ON(id_priv->cma_dev->device != id->device);

- if (rdma_tech_ib(id->device, id->port_num)) {
+ if (cap_ib_mcast(id->device, id->port_num)) {
ib_sa_free_multicast(mc->multicast.ib);
kfree(mc);
} else if (rdma_tech_iboe(id->device, id->port_num))
diff --git a/drivers/infiniband/core/multicast.c b/drivers/infiniband/core/multicast.c
index 24d93f5..bdc1880 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 (WARN_ON(!rdma_tech_ib(dev->device, event->element.port_num)))
+ if (WARN_ON(!cap_ib_mcast(dev->device, event->element.port_num)))
return;

index = event->element.port_num - dev->start_port;
@@ -820,7 +820,7 @@ static void mcast_add_one(struct ib_device *device)
}

for (i = 0; i <= dev->end_port - dev->start_port; i++) {
- if (!rdma_tech_ib(device, dev->start_port + i))
+ if (!cap_ib_mcast(device, dev->start_port + i))
continue;
port = &dev->port[i];
port->dev = dev;
@@ -858,7 +858,7 @@ 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_tech_ib(device, dev->start_port + i)) {
+ if (cap_ib_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 de3a168..6e354df 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1848,6 +1848,21 @@ static inline int cap_ib_sa(struct ib_device *device, u8 port_num)
return rdma_tech_ib(device, port_num);
}

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