diff options
| author | Or Gerlitz <ogerlitz@mellanox.com> | 2015-03-18 14:57:34 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-03-18 14:55:19 -0400 |
| commit | fc31e2560a2443410fe45c27116fae736541a7b5 (patch) | |
| tree | 6b2d25803b612cb1fcb2038d069d4063a843a4eb /drivers/net/ethernet/mellanox/mlx4/qp.c | |
| parent | 822b3b2ebfff8e9b3d006086c527738a7ca00cd0 (diff) | |
net/mlx4_core: Add basic support for QP max-rate limiting
Add the low-level device commands and definitions used for QP max-rate limiting.
This is done through the following elements:
- read rate-limit device caps in QUERY_DEV_CAP: number of different
rates and the min/max rates in Kbs/Mbs/Gbs units
- enhance the QP context struct to contain rate limit units and value
- allow to do run time rate-limit setting to QPs through the
update-qp firmware command
- QP rate-limiting is disallowed for VFs
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/qp.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/qp.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/qp.c b/drivers/net/ethernet/mellanox/mlx4/qp.c index eda29dbbfcd2..69e4462e4ee4 100644 --- a/drivers/net/ethernet/mellanox/mlx4/qp.c +++ b/drivers/net/ethernet/mellanox/mlx4/qp.c @@ -442,6 +442,11 @@ int mlx4_update_qp(struct mlx4_dev *dev, u32 qpn, cmd->qp_context.param3 |= cpu_to_be32(MLX4_STRIP_VLAN); } + if (attr & MLX4_UPDATE_QP_RATE_LIMIT) { + qp_mask |= 1ULL << MLX4_UPD_QP_MASK_RATE_LIMIT; + cmd->qp_context.rate_limit_params = cpu_to_be16((params->rate_unit << 14) | params->rate_val); + } + cmd->primary_addr_path_mask = cpu_to_be64(pri_addr_path_mask); cmd->qp_mask = cpu_to_be64(qp_mask); |