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enable virtio_net to return bus_info in ethtool -i consistent with emulated NICs

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Add a new .bus_name to virtio_config_ops then modify virtio_net to
call through to it in an ethtool .get_drvinfo routine to report
bus_info in ethtool -i output which is consistent with other
emulated NICs and the output of lspci.

Signed-off-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rick Jones 2011-11-14 14:17:08 +00:00 • committed by David S. Miller
parent 64882709ef
commit 66846048f5
6 changed files with 55 additions and 0 deletions
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14
include/linux/virtio_config.h
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@ -100,6 +100,10 @@
* vdev: the virtio_device
* This gives the final feature bits for the device: it can change
* the dev->feature bits if it wants.
* @bus_name: return the bus name associated with the device
* vdev: the virtio_device
* This returns a pointer to the bus name a la pci_name from which
* the caller can then copy.
*/
typedef void vq_callback_t(struct virtqueue *);
struct virtio_config_ops {
@ -117,6 +121,7 @@ struct virtio_config_ops {
void (*del_vqs)(struct virtio_device *);
u32 (*get_features)(struct virtio_device *vdev);
void (*finalize_features)(struct virtio_device *vdev);
const char *(*bus_name)(struct virtio_device *vdev);
};
/* If driver didn't advertise the feature, it will never appear. */
@ -182,5 +187,14 @@ struct virtqueue *virtio_find_single_vq(struct virtio_device *vdev,
return ERR_PTR(err);
return vq;
}
static inline
const char *virtio_bus_name(struct virtio_device *vdev)
{
if (!vdev->config->bus_name)
return "virtio";
return vdev->config->bus_name(vdev);
}
#endif /* __KERNEL__ */
#endif /* _LINUX_VIRTIO_CONFIG_H */