net/mlx5: SD, prefer sd_group_size from vport context

Newer FW reports the SD group size directly in the NIC vport context
via the sd_group_size field, gated by the sd_group_size capability.
Switch sd_init() to source the group size from there and fall back to
the MPIR-based host_buses query only when the cap is absent.
sd_group_size might return 1 in some FW configuration. Add explicit
check to disable SD creation in this case.

While here, rename host_buses to group_size throughout sd.c to follow
the new name on capable FW.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260810093037.3138197-1-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

0 files changed, 0 insertions, 0 deletions