IB/core: Add get FW version string to the core

Allow for a common core function to get firmware version strings
from the individual devices.

In later patches this format can then then be used to pass a
properly formated version string through the IPoIB layer.

The problem with the current code in the IPoIB layer is that it is
specific to certain hardware types.

Furthermore, this gives us a common function through which the core
can provide a common sysfs entry.  Eventually we may want to
remove the sysfs export but this provides for user space backwards
compatibility.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index 5c155fa91eec8380a463ad687a6aa977c10bcefd..760ef603a4684009c0015600a473af530011d1d5 100644 (file)
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -311,6 +311,15 @@ static int read_port_immutable(struct ib_device *device)
        return 0;
 }
 
+void ib_get_device_fw_str(struct ib_device *dev, char *str, size_t str_len)
+{
+       if (dev->get_dev_fw_str)
+               dev->get_dev_fw_str(dev, str, str_len);
+       else
+               str[0] = '\0';
+}
+EXPORT_SYMBOL(ib_get_device_fw_str);
+
 /**
  * ib_register_device - Register an IB device with IB core
  * @device:Device to register

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 7e440d41487aa8671fbb8952fb01e2bbf63b11f0..1dc3d0d90202e890c45bc9d61b7745286a1eea36 100644 (file)
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1956,6 +1956,7 @@ struct ib_device {
         * in fast paths.
         */
        int (*get_port_immutable)(struct ib_device *, u8, struct ib_port_immutable *);
+       void (*get_dev_fw_str)(struct ib_device *, char *str, size_t str_len);
 };
 
 struct ib_client {
@@ -1991,6 +1992,8 @@ struct ib_client {
 struct ib_device *ib_alloc_device(size_t size);
 void ib_dealloc_device(struct ib_device *device);
 
+void ib_get_device_fw_str(struct ib_device *device, char *str, size_t str_len);
+
 int ib_register_device(struct ib_device *device,
                       int (*port_callback)(struct ib_device *,
                                            u8, struct kobject *));