From: Bodong Wang <bodong@xxxxxxxxxxxx>
Add packet pacing support, it includes:
- Using the extended command to pass rate limit
to the kernel. (i.e. ibv_cmd_modify_qp_ex).
- Reporting device capabilities.
Signed-off-by: Bodong Wang <bodong@xxxxxxxxxxxx>
Reviewed-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
---
providers/mlx5/mlx5-abi.h | 2 ++
providers/mlx5/verbs.c | 20 ++++++++++++++++++--
2 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/providers/mlx5/mlx5-abi.h b/providers/mlx5/mlx5-abi.h
index 4b5b577..38220ec 100644
--- a/providers/mlx5/mlx5-abi.h
+++ b/providers/mlx5/mlx5-abi.h
@@ -253,6 +253,8 @@ struct mlx5_query_device_ex_resp {
__u32 response_length;
struct ibv_tso_caps tso_caps;
struct mlx5_rss_caps rss_caps; /* vendor data channel */
+ __u64 reserved_cqe_comp;
+ struct ibv_packet_pacing_caps packet_pacing_caps;
};
#endif /* MLX5_ABI_H */
diff --git a/providers/mlx5/verbs.c b/providers/mlx5/verbs.c
index e288ebf..b4bc228 100644
--- a/providers/mlx5/verbs.c
+++ b/providers/mlx5/verbs.c
@@ -1498,10 +1498,16 @@ int mlx5_query_qp(struct ibv_qp *ibqp, struct ibv_qp_attr *attr,
return 0;
}
+enum {
+ MLX5_MODIFY_QP_EX_ATTR_MASK = IBV_QP_RATE_LIMIT,
+};
+
int mlx5_modify_qp(struct ibv_qp *qp, struct ibv_qp_attr *attr,
int attr_mask)
{
- struct ibv_modify_qp cmd;
+ struct ibv_modify_qp_ex cmd_ex = {};
+ struct ibv_modify_qp_resp_ex resp = {};
+ struct ibv_modify_qp cmd = {};
struct mlx5_qp *mqp = to_mqp(qp);
struct mlx5_context *context = to_mctx(qp->context);
int ret;
@@ -1533,7 +1539,15 @@ int mlx5_modify_qp(struct ibv_qp *qp, struct ibv_qp_attr *attr,
}
}
- ret = ibv_cmd_modify_qp(qp, attr, attr_mask, &cmd, sizeof(cmd));
+ if (attr_mask & MLX5_MODIFY_QP_EX_ATTR_MASK)
+ ret = ibv_cmd_modify_qp_ex(qp, attr, attr_mask,
+ &cmd_ex,
+ sizeof(cmd_ex), sizeof(cmd_ex),
+ &resp,
+ sizeof(resp), sizeof(resp));
+ else
+ ret = ibv_cmd_modify_qp(qp, attr, attr_mask,
+ &cmd, sizeof(cmd));
if (!ret &&
(attr_mask & IBV_QP_STATE) &&
@@ -1887,6 +1901,8 @@ int mlx5_query_device_ex(struct ibv_context *context,
attr->tso_caps = resp.tso_caps;
attr->rss_caps.rx_hash_fields_mask = resp.rss_caps.rx_hash_fields_mask;
attr->rss_caps.rx_hash_function = resp.rss_caps.rx_hash_function;
+ attr->packet_pacing_caps = resp.packet_pacing_caps;
+
major = (raw_fw_ver >> 32) & 0xffff;
minor = (raw_fw_ver >> 16) & 0xffff;
sub_minor = raw_fw_ver & 0xffff;
--
1.8.3.1
--
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