netdev: FCoE: Add new ndo_get_fcoe_hbainfo() call

This adds a new ndo_get_fcoe_hbainfo() call in
net_device_ops for FCoE protocol stack.

If supported by the underlying device, the FCoE protocol
stack will call this to get device specific information
from the underlying device.
This information will then be utilized by the FCoE protocol
stack to register Fiber Channel HBA attributes with the
Fiber Channel Management Service via Fabric Device
Management Interface (FDMI) as per the T11 FC-GS
specification.

Changes in v2:
- As per comments from David Miller aligning the parameters
of the ndo_get_fcoe_hbainfo()

Signed-off-by: Neerav Parikh <Neerav.Parikh@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index a776a67..a1d1095 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -707,6 +707,23 @@ struct netdev_tc_txq {
        u16 offset;
 };
 
+#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
+/*
+ * This structure is to hold information about the device
+ * configured to run FCoE protocol stack.
+ */
+struct netdev_fcoe_hbainfo {
+       char    manufacturer[64];
+       char    serial_number[64];
+       char    hardware_version[64];
+       char    driver_version[64];
+       char    optionrom_version[64];
+       char    firmware_version[64];
+       char    model[256];
+       char    model_description[256];
+};
+#endif
+
 /*
  * This structure defines the management hooks for network devices.
  * The following hooks can be defined; unless noted otherwise, they are
@@ -847,6 +864,13 @@ struct netdev_tc_txq {
  *     perform necessary setup and returns 1 to indicate the device is set up
  *     successfully to perform DDP on this I/O, otherwise this returns 0.
  *
+ * int (*ndo_fcoe_get_hbainfo)(struct net_device *dev,
+ *                            struct netdev_fcoe_hbainfo *hbainfo);
+ *     Called when the FCoE Protocol stack wants information on the underlying
+ *     device. This information is utilized by the FCoE protocol stack to
+ *     register attributes with Fiber Channel management service as per the
+ *     FC-GS Fabric Device Management Information(FDMI) specification.
+ *
  * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type);
  *     Called when the underlying device wants to override default World Wide
  *     Name (WWN) generation mechanism in FCoE protocol stack to pass its own
@@ -950,6 +974,8 @@ struct net_device_ops {
                                                       u16 xid,
                                                       struct scatterlist *sgl,
                                                       unsigned int sgc);
+       int                     (*ndo_fcoe_get_hbainfo)(struct net_device *dev,
+                                                       struct netdev_fcoe_hbainfo *hbainfo);
 #endif
 
 #if IS_ENABLED(CONFIG_LIBFCOE)