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4 Commits

Author SHA1 Message Date
Leon Romanovsky
74c9729dd8 vdpa/mlx5: Connect mlx5_vdpa to auxiliary bus 
Change module registration logic to use auxiliary bus instead of custom
made mlx5 register interface.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
 2020-12-06 07:32:05 +02:00
Eli Cohen
1a86b377aa vdpa/mlx5: Add VDPA driver for supported mlx5 devices 
Add a front end VDPA driver that registers in the VDPA bus and provides
networking to a guest. The VDPA driver creates the necessary resources
on the VF it is driving such that data path will be offloaded.

Notifications are being communicated through the driver.

Currently, only VFs are supported. In subsequent patches we will have
devlink support to control which VF is used for VDPA and which function
is used for regular networking.

Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Link: https://lore.kernel.org/r/20200804162048.22587-13-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
 2020-08-05 19:00:24 -04:00
Eli Cohen
94abbccdf2 vdpa/mlx5: Add shared memory registration code 
Add code to support registering address space region for the device. The
virtio driver can run as either:
1. Guest virtio driver
2. Userspace virtio driver on the host
3. Kernel virtio driver on the host

In any case a memory key object is required to provide access to memory
for the device.

This code will be shared by network or block driver implementations.

Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Link: https://lore.kernel.org/r/20200804162048.22587-12-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2020-08-05 19:00:24 -04:00
Eli Cohen
29064bfdab vdpa/mlx5: Add support library for mlx5 VDPA implementation 
Following patches introduce VDPA network driver for Mellanox Connectx6
devices. This patch provides functionality that will be used by those
patches.

Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Link: https://lore.kernel.org/r/20200804162048.22587-11-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2020-08-05 19:00:23 -04:00