diff mbox

[RFC,04/11] IB/Verbs: Use management helper cap_smi() for smi-check

Message ID 55157AEB.7020705@profitbricks.com (mailing list archive)
State New, archived
Headers show

Commit Message

Michael Wang March 27, 2015, 3:44 p.m. UTC
Introduce helper cap_smi() to help us check if the port of an
IB device support Subnet Management Interface.

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/agent.c  |  2 +-
 drivers/infiniband/core/mad.c    |  2 +-
 drivers/infiniband/hw/mlx4/mad.c |  2 +-
 include/rdma/ib_verbs.h          | 15 +++++++++++++++
 4 files changed, 18 insertions(+), 3 deletions(-)

Comments

Jason Gunthorpe March 27, 2015, 4:32 p.m. UTC | #1
On Fri, Mar 27, 2015 at 04:44:43PM +0100, Michael Wang wrote:
> 
> Introduce helper cap_smi() to help us check if the port of an
> IB device support Subnet Management Interface.

This and most of the others should be qualified with 'cap_ib_smi'
since we already know we will need 'cap_opa_smi' someday

Jason
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Michael Wang March 27, 2015, 4:59 p.m. UTC | #2
Make sense to me if opa smi will be handled differently, will be
changed in next version :-)

Regards,
Michael Wang

On Fri, Mar 27, 2015 at 5:32 PM, Jason Gunthorpe
<jgunthorpe@obsidianresearch.com> wrote:
> On Fri, Mar 27, 2015 at 04:44:43PM +0100, Michael Wang wrote:
>>
>> Introduce helper cap_smi() to help us check if the port of an
>> IB device support Subnet Management Interface.
>
> This and most of the others should be qualified with 'cap_ib_smi'
> since we already know we will need 'cap_opa_smi' someday
>
> Jason
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diff mbox

Patch

diff --git a/drivers/infiniband/core/agent.c b/drivers/infiniband/core/agent.c
index 27f1bec..187514a 100644
--- a/drivers/infiniband/core/agent.c
+++ b/drivers/infiniband/core/agent.c
@@ -156,7 +156,7 @@  int ib_agent_port_open(struct ib_device *device, int port_num)
         goto error1;
     }
 
-    if (rdma_port_ll_is_ib(device, port_num)) {
+    if (cap_smi(device, port_num)) {
         /* Obtain send only MAD agent for SMI QP */
         port_priv->agent[0] = ib_register_mad_agent(device, port_num,
                                 IB_QPT_SMI, NULL, 0,
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 896b749..c5d1ebb5b 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -2938,7 +2938,7 @@  static int ib_mad_port_open(struct ib_device *device,
     init_mad_qp(port_priv, &port_priv->qp_info[1]);
 
     cq_size = mad_sendq_size + mad_recvq_size;
-    has_smi = rdma_port_ll_is_ib(device, port_num);
+    has_smi = cap_smi(device, port_num);
     if (has_smi)
         cq_size *= 2;
 
diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index 4736fc7..09874d0 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -1753,7 +1753,7 @@  static int create_pv_resources(struct ib_device *ibdev, int slave, int port,
 
     ctx->state = DEMUX_PV_STATE_STARTING;
     /* have QP0 only if link layer is IB */
-    if (rdma_port_ll_is_ib(ibdev, ctx->port))
+    if (cap_smi(ibdev, ctx->port))
         ctx->has_smi = 1;
 
     if (ctx->has_smi) {
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 7b2bfe8..3d06178 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1796,6 +1796,21 @@  static inline int has_mad(struct ib_device *device)
     return rdma_transport_is_ib(device);
 }
 
+/**
+ * cap_smi - Check if the port of device has the capability
+ * Subnet Management Interface.
+ *
+ * @device: Device to be checked
+ * @port_num: Port number of the device
+ *
+ * Return 0 when port of the device don't support
+ * Subnet Management Interface.
+ */
+static inline int cap_smi(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);