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net/mlx5: enable meter bucket overflow for yellow color

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To support the meter policy for yellow action, the prerequisite is
that the hardware needs to support the EBS, as defined in the
RFC2697.
  https://datatracker.ietf.org/doc/html/rfc2697
Then some of the packets can be marked as yellow if the tokens of C
bucket is not enough but enough in E bucket. The color could be used
for the further steering of the packets.

In the current implementation EBS and overflow were ignored when
creating a meter profile. With this commit, if EBS is set by the
application, the generation of yellow color will be enabled in the
hardware for flow rules steering of packets.

Signed-off-by: Bing Zhao <bingz@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
This commit is contained in:
Bing Zhao 2021-07-21 11:54:16 +03:00 committed by Thomas Monjalon
parent 363db9b00f
commit 9b5463df5d
2 changed files with 9 additions and 5 deletions
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4
drivers/net/mlx5/mlx5_flow_aso.c
View File

@ -747,6 +747,10 @@ mlx5_aso_mtr_sq_enqueue_single(struct mlx5_aso_sq *sq,
wqe->aso_dseg.mtrs[dseg_idx].v_bo_sc_bbog_mm =
RTE_BE32((1 << ASO_DSEG_VALID_OFFSET) |
(MLX5_FLOW_COLOR_GREEN << ASO_DSEG_SC_OFFSET));
/* Only needed for RFC2697. */
if (fm->profile->srtcm_prm.ebs_eir)
wqe->aso_dseg.mtrs[dseg_idx].v_bo_sc_bbog_mm |=
RTE_BE32(1 << ASO_DSEG_BO_OFFSET);
sq->head++;
sq->pi += 2;/* Each WQE contains 2 WQEBB's. */
rte_io_wmb();

10
drivers/net/mlx5/mlx5_flow_meter.c
View File

@ -319,9 +319,9 @@ mlx5_flow_meter_param_fill(struct mlx5_flow_meter_profile *fmp,
cbs_man = man;
cbs_exp = exp;
srtcm->cbs_cir = rte_cpu_to_be_32(cbs_exp << ASO_DSEG_CBS_EXP_OFFSET |
cbs_man << ASO_DSEG_CBS_MAN_OFFSET |
cir_exp << ASO_DSEG_CIR_EXP_OFFSET |
cir_man);
cbs_man << ASO_DSEG_CBS_MAN_OFFSET |
cir_exp << ASO_DSEG_CIR_EXP_OFFSET |
cir_man);
mlx5_flow_meter_xbs_man_exp_calc(ebs, &man, &exp);
/* Check if ebs mantissa is too large. */
if (exp > ASO_DSEG_EXP_MASK)
@ -332,7 +332,7 @@ mlx5_flow_meter_param_fill(struct mlx5_flow_meter_profile *fmp,
ebs_man = man;
ebs_exp = exp;
srtcm->ebs_eir = rte_cpu_to_be_32(ebs_exp << ASO_DSEG_EBS_EXP_OFFSET |
ebs_man << ASO_DSEG_EBS_MAN_OFFSET);
ebs_man << ASO_DSEG_EBS_MAN_OFFSET);
return 0;
}
@ -421,7 +421,7 @@ mlx5_flow_meter_profile_add(struct rte_eth_dev *dev,
return ret;
/* Meter profile memory allocation. */
fmp = mlx5_malloc(MLX5_MEM_ZERO, sizeof(struct mlx5_flow_meter_profile),
RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
if (fmp == NULL)
return -rte_mtr_error_set(error, ENOMEM,
RTE_MTR_ERROR_TYPE_UNSPECIFIED,