This patch is to support modify ECN field in IPv4/IPv6 header.
Signed-off-by: Sean Zhang <xiazh...@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viachesl...@nvidia.com>
---
doc/guides/nics/mlx5.rst | 1 +
doc/guides/rel_notes/release_22_07.rst | 1 +
drivers/net/mlx5/mlx5_flow_dv.c | 20 ++++++++++++++++++++
3 files changed, 22 insertions(+)
diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index d83c56d..7ecf11e 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -93,6 +93,7 @@ Features
- Connection tracking.
- Sub-Function representors.
- Sub-Function.
+- Modify IPv4/IPv6 ECN field.
Limitations
diff --git a/doc/guides/rel_notes/release_22_07.rst
b/doc/guides/rel_notes/release_22_07.rst
index d46f773..a2a8cf0 100644
--- a/doc/guides/rel_notes/release_22_07.rst
+++ b/doc/guides/rel_notes/release_22_07.rst
@@ -116,6 +116,7 @@ New Features
* Added support for promiscuous mode on Windows.
* Added support for MTU on Windows.
* Added matching and RSS on IPsec ESP.
+ * Added support for modifying ECN field of IPv4/IPv6.
* **Updated VMware vmxnet3 networking driver.**
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index a575e31..0f028de 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -1450,6 +1450,9 @@ struct field_modify_info modify_tcp[] = {
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 @@ struct field_modify_info modify_tcp[] = {
(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:
@@ -4826,6 +4836,7 @@ struct mlx5_list_entry *
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,
@@ -4953,6 +4964,15 @@ struct mlx5_list_entry *
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);
}
--
1.8.3.1
