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net/mlx5: support modifying ECN field

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This patch is to support modify ECN field in IPv4/IPv6 header.

Signed-off-by: Sean Zhang <xiazhang@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
This commit is contained in:
Sean Zhang 2022-06-07 14:18:59 +03:00 committed by Raslan Darawsheh
parent 097d84a42a
commit 76d5756122
3 changed files with 22 additions and 0 deletions
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1
doc/guides/nics/mlx5.rst
View File

@ -82,6 +82,7 @@ Features
- Matching on GTP extension header with raw encap/decap action.
- Matching on Geneve TLV option header with raw encap/decap action.
- Matching on ESP header SPI field.
- Modify IPv4/IPv6 ECN field.
- RSS support in sample action.
- E-Switch mirroring and jump.
- E-Switch mirroring and modify.

1
doc/guides/rel_notes/release_22_07.rst
View File

@ -169,6 +169,7 @@ New Features
* Added support for MTU on Windows.
* Added matching and RSS on IPsec ESP.
* Added matching on represented port.
* Added support for modifying ECN field of IPv4/IPv6.
* **Updated Netronome nfp driver.**

20
drivers/net/mlx5/mlx5_flow_dv.c
View File

@ -1450,6 +1450,9 @@ mlx5_flow_item_field_width(struct rte_eth_dev *dev,
case RTE_FLOW_FIELD_POINTER:
case RTE_FLOW_FIELD_VALUE:
return inherit < 0 ? 0 : inherit;
case RTE_FLOW_FIELD_IPV4_ECN:
case RTE_FLOW_FIELD_IPV6_ECN:
return 2;
default:
MLX5_ASSERT(false);
}
@ -1827,6 +1830,13 @@ mlx5_flow_field_id_to_modify_info
(meta_count - width)) & meta_mask);
}
break;
case RTE_FLOW_FIELD_IPV4_ECN:
case RTE_FLOW_FIELD_IPV6_ECN:
info[idx] = (struct field_modify_info){1, 0,
MLX5_MODI_OUT_IP_ECN};
if (mask)
mask[idx] = 0x3 >> (2 - width);
break;
case RTE_FLOW_FIELD_POINTER:
case RTE_FLOW_FIELD_VALUE:
default:
@ -4900,6 +4910,7 @@ flow_dv_validate_action_modify_field(struct rte_eth_dev *dev,
int ret = 0;
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_sh_config *config = &priv->sh->config;
struct mlx5_hca_attr *hca_attr = &priv->sh->cdev->config.hca_attr;
const struct rte_flow_action_modify_field *action_modify_field =
action->conf;
uint32_t dst_width = mlx5_flow_item_field_width(dev,
@ -5027,6 +5038,15 @@ flow_dv_validate_action_modify_field(struct rte_eth_dev *dev,
RTE_FLOW_ERROR_TYPE_ACTION, action,
"add and sub operations"
" are not supported");
if (action_modify_field->dst.field == RTE_FLOW_FIELD_IPV4_ECN ||
action_modify_field->src.field == RTE_FLOW_FIELD_IPV4_ECN ||
action_modify_field->dst.field == RTE_FLOW_FIELD_IPV6_ECN ||
action_modify_field->src.field == RTE_FLOW_FIELD_IPV6_ECN)
if (!hca_attr->modify_outer_ip_ecn &&
!attr->transfer && !attr->group)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION, action,
"modifications of the ECN for current firmware is not supported");
return (action_modify_field->width / 32) +
!!(action_modify_field->width % 32);
}