linux-stable.git/include/linux/vdpa.h, branch v5.16.3

vdpa: Enable user to set mac and mtu of vdpa device

2021-11-01T09:26:49+00:00

$ vdpa dev add name bar mgmtdev vdpasim_net mac 00:11:22:33:44:55 mtu 9000

$ vdpa dev config show
bar: mac 00:11:22:33:44:55 link up link_announce false mtu 9000

$ vdpa dev config show -jp
{
    "config": {
        "bar": {
            "mac": "00:11:22:33:44:55",
            "link ": "up",
            "link_announce ": false,
            "mtu": 9000,
        }
    }
}

Signed-off-by: Parav Pandit 
Reviewed-by: Eli Cohen 
Acked-by: Jason Wang 

Link: https://lore.kernel.org/r/20211026175519.87795-5-parav@nvidia.com
Signed-off-by: Michael S. Tsirkin 
Reviewed-by: Stefano Garzarella

vdpa: Use kernel coding style for structure comments

2021-11-01T09:26:49+00:00

As subsequent patch adds new structure field with comment, move the
structure comment to follow kernel coding style.

Signed-off-by: Parav Pandit 
Reviewed-by: Eli Cohen 
Acked-by: Jason Wang 
Reviewed-by: Stefano Garzarella 
Link: https://lore.kernel.org/r/20211026175519.87795-4-parav@nvidia.com
Signed-off-by: Michael S. Tsirkin

vdpa: Introduce query of device config layout

2021-11-01T09:26:49+00:00

Introduce a command to query a device config layout.

An example query of network vdpa device:

$ vdpa dev add name bar mgmtdev vdpasim_net

$ vdpa dev config show
bar: mac 00:35:09:19:48:05 link up link_announce false mtu 1500

$ vdpa dev config show -jp
{
    "config": {
        "bar": {
            "mac": "00:35:09:19:48:05",
            "link ": "up",
            "link_announce ": false,
            "mtu": 1500,
        }
    }
}

Signed-off-by: Parav Pandit 
Signed-off-by: Eli Cohen 
Acked-by: Jason Wang 
Link: https://lore.kernel.org/r/20211026175519.87795-3-parav@nvidia.com
Signed-off-by: Michael S. Tsirkin

vdpa: Introduce and use vdpa device get, set config helpers

2021-11-01T09:26:49+00:00

Subsequent patches enable get and set configuration either
via management device or via vdpa device' config ops.

This requires synchronization between multiple callers to get and set
config callbacks. Features setting also influence the layout of the
configuration fields endianness.

To avoid exposing synchronization primitives to callers, introduce
helper for setting the configuration and use it.

Signed-off-by: Parav Pandit 
Reviewed-by: Eli Cohen 
Acked-by: Jason Wang 
Reviewed-by: Stefano Garzarella 
Link: https://lore.kernel.org/r/20211026175519.87795-2-parav@nvidia.com
Signed-off-by: Michael S. Tsirkin

vdpa: add new callback get_vq_num_min in vdpa_config_ops

2021-11-01T08:30:35+00:00

This callback is optional. For vdpa devices that not support to change
virtqueue size, get_vq_num_min and get_vq_num_max will return the same
value, so that users can choose a correct value for that device.

Suggested-by: Jason Wang 
Signed-off-by: Wu Zongyong 
Acked-by: Jason Wang 
Link: https://lore.kernel.org/r/f4af5b0abd660d9a29ab6b2f67bd6df10284a230.1635493219.git.wuzongyong@linux.alibaba.com
Signed-off-by: Michael S. Tsirkin

vdpa: fix typo

2021-11-01T08:30:34+00:00

Signed-off-by: Wu Zongyong 
Acked-by: Jason Wang 
Link: https://lore.kernel.org/r/4b5153262e4ba64986bb567d7425ad4829ca7bcc.1635493219.git.wuzongyong@linux.alibaba.com
Signed-off-by: Michael S. Tsirkin

vdpa: Support transferring virtual addressing during DMA mapping

2021-09-06T11:20:57+00:00

This patch introduces an attribute for vDPA device to indicate
whether virtual address can be used. If vDPA device driver set
it, vhost-vdpa bus driver will not pin user page and transfer
userspace virtual address instead of physical address during
DMA mapping. And corresponding vma->vm_file and offset will be
also passed as an opaque pointer.

Suggested-by: Jason Wang 
Signed-off-by: Xie Yongji 
Acked-by: Jason Wang 
Link: https://lore.kernel.org/r/20210831103634.33-11-xieyongji@bytedance.com
Signed-off-by: Michael S. Tsirkin

vdpa: Add an opaque pointer for vdpa_config_ops.dma_map()

2021-09-06T11:20:57+00:00

Add an opaque pointer for DMA mapping.

Suggested-by: Jason Wang 
Signed-off-by: Xie Yongji 
Acked-by: Jason Wang 
Link: https://lore.kernel.org/r/20210831103634.33-9-xieyongji@bytedance.com
Signed-off-by: Michael S. Tsirkin

vdpa: Add reset callback in vdpa_config_ops

2021-09-06T11:20:57+00:00

This adds a new callback to support device specific reset
behavior. The vdpa bus driver will call the reset function
instead of setting status to zero during resetting.

Signed-off-by: Xie Yongji 
Link: https://lore.kernel.org/r/20210831103634.33-6-xieyongji@bytedance.com
Signed-off-by: Michael S. Tsirkin

vdpa: Fix some coding style issues

2021-09-06T11:20:57+00:00

Fix some code indent issues and following checkpatch warning:

WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
371: FILE: include/linux/vdpa.h:371:
+static inline void vdpa_get_config(struct vdpa_device *vdev, unsigned offset,

Signed-off-by: Xie Yongji 
Acked-by: Jason Wang 
Reviewed-by: Stefano Garzarella 
Link: https://lore.kernel.org/r/20210831103634.33-5-xieyongji@bytedance.com
Signed-off-by: Michael S. Tsirkin