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| author | Eli Cohen <elic@nvidia.com> | 2022-01-05 13:46:42 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-01-14 18:50:54 -0500 |
| commit | cd2629f6df1cab5b3df34705ae7f3bde6147fce3 (patch) | |
| tree | a2a0e3d2426f9ab090d8a30d31e0087296080c22 /drivers/vdpa | |
| parent | 37e07e705888e4c3502f204e9c6785c9c2d6d86a (diff) | |
| download | linux-cd2629f6df1cab5b3df34705ae7f3bde6147fce3.tar.gz linux-cd2629f6df1cab5b3df34705ae7f3bde6147fce3.tar.bz2 linux-cd2629f6df1cab5b3df34705ae7f3bde6147fce3.zip | |
vdpa: Support reporting max device capabilities
Add max_supported_vqs and supported_features fields to struct
vdpa_mgmt_dev. Upstream drivers need to feel these values according to
the device capabilities.
These values are reported back in a netlink message when showing management
devices.
Examples:
$ auxiliary/mlx5_core.sf.1:
supported_classes net
max_supported_vqs 257
dev_features CSUM GUEST_CSUM MTU HOST_TSO4 HOST_TSO6 STATUS CTRL_VQ MQ \
CTRL_MAC_ADDR VERSION_1 ACCESS_PLATFORM
$ vdpa -j mgmtdev show
{"mgmtdev":{"auxiliary/mlx5_core.sf.1":{"supported_classes":["net"], \
"max_supported_vqs":257,"dev_features":["CSUM","GUEST_CSUM","MTU", \
"HOST_TSO4","HOST_TSO6","STATUS","CTRL_VQ","MQ","CTRL_MAC_ADDR", \
"VERSION_1","ACCESS_PLATFORM"]}}}
$ vdpa -jp mgmtdev show
{
"mgmtdev": {
"auxiliary/mlx5_core.sf.1": {
"supported_classes": [ "net" ],
"max_supported_vqs": 257,
"dev_features": ["CSUM","GUEST_CSUM","MTU","HOST_TSO4", \
"HOST_TSO6","STATUS","CTRL_VQ","MQ", \
"CTRL_MAC_ADDR","VERSION_1","ACCESS_PLATFORM"]
}
}
}
Signed-off-by: Eli Cohen <elic@nvidia.com>
Link: https://lore.kernel.org/r/20220105114646.577224-11-elic@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Si-Wei Liu<si-wei.liu@oracle.com>
Diffstat (limited to 'drivers/vdpa')
| -rw-r--r-- | drivers/vdpa/vdpa.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index 60cf821175fa..34fa251db8cc 100644 --- a/drivers/vdpa/vdpa.c +++ b/drivers/vdpa/vdpa.c @@ -514,6 +514,16 @@ static int vdpa_mgmtdev_fill(const struct vdpa_mgmt_dev *mdev, struct sk_buff *m err = -EMSGSIZE; goto msg_err; } + if (nla_put_u32(msg, VDPA_ATTR_DEV_MGMTDEV_MAX_VQS, + mdev->max_supported_vqs)) { + err = -EMSGSIZE; + goto msg_err; + } + if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_SUPPORTED_FEATURES, + mdev->supported_features, VDPA_ATTR_PAD)) { + err = -EMSGSIZE; + goto msg_err; + } genlmsg_end(msg, hdr); return 0; |