提交 d949167d 编写于 作者: B Bodong Wang 提交者: Doug Ledford

IB/mlx5: Report mlx5 packet pacing capabilities when querying device

Enable mlx5 based hardware to report packet pacing capabilities
from kernel to user space. Packet pacing allows to limit the rate to any
number between the maximum and minimum, based on user settings.

The capabilities are exposed to user space through query_device by uhw.
The following capabilities are reported:

1. The maximum and minimum rate limit in kbps supported by packet pacing.
2. Bitmap showing which QP types are supported by packet pacing operation.
Signed-off-by: NBodong Wang <bodong@mellanox.com>
Reviewed-by: NMatan Barak <matanb@mellanox.com>
Signed-off-by: NLeon Romanovsky <leon@kernel.org>
Signed-off-by: NDoug Ledford <dledford@redhat.com>
上级 ca5b91d6
...@@ -693,6 +693,19 @@ static int mlx5_ib_query_device(struct ib_device *ibdev, ...@@ -693,6 +693,19 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
resp.response_length += sizeof(resp.cqe_comp_caps); resp.response_length += sizeof(resp.cqe_comp_caps);
} }
if (field_avail(typeof(resp), packet_pacing_caps, uhw->outlen)) {
if (MLX5_CAP_QOS(mdev, packet_pacing) &&
MLX5_CAP_GEN(mdev, qos)) {
resp.packet_pacing_caps.qp_rate_limit_max =
MLX5_CAP_QOS(mdev, packet_pacing_max_rate);
resp.packet_pacing_caps.qp_rate_limit_min =
MLX5_CAP_QOS(mdev, packet_pacing_min_rate);
resp.packet_pacing_caps.supported_qpts |=
1 << IB_QPT_RAW_PACKET;
}
resp.response_length += sizeof(resp.packet_pacing_caps);
}
if (uhw->outlen) { if (uhw->outlen) {
err = ib_copy_to_udata(uhw, &resp, resp.response_length); err = ib_copy_to_udata(uhw, &resp, resp.response_length);
......
...@@ -136,12 +136,25 @@ struct mlx5_ib_cqe_comp_caps { ...@@ -136,12 +136,25 @@ struct mlx5_ib_cqe_comp_caps {
__u32 supported_format; /* enum mlx5_ib_cqe_comp_res_format */ __u32 supported_format; /* enum mlx5_ib_cqe_comp_res_format */
}; };
struct mlx5_packet_pacing_caps {
__u32 qp_rate_limit_min;
__u32 qp_rate_limit_max; /* In kpbs */
/* Corresponding bit will be set if qp type from
* 'enum ib_qp_type' is supported, e.g.
* supported_qpts |= 1 << IB_QPT_RAW_PACKET
*/
__u32 supported_qpts;
__u32 reserved;
};
struct mlx5_ib_query_device_resp { struct mlx5_ib_query_device_resp {
__u32 comp_mask; __u32 comp_mask;
__u32 response_length; __u32 response_length;
struct mlx5_ib_tso_caps tso_caps; struct mlx5_ib_tso_caps tso_caps;
struct mlx5_ib_rss_caps rss_caps; struct mlx5_ib_rss_caps rss_caps;
struct mlx5_ib_cqe_comp_caps cqe_comp_caps; struct mlx5_ib_cqe_comp_caps cqe_comp_caps;
struct mlx5_packet_pacing_caps packet_pacing_caps;
__u32 mlx5_ib_support_multi_pkt_send_wqes; __u32 mlx5_ib_support_multi_pkt_send_wqes;
__u32 reserved; __u32 reserved;
}; };
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册