[PATCH v7 3/3] net/mlx5/hws: add compare ESP sequence number support

[Michael Baum]

Add support for compare item with "RTE_FLOW_FIELD_ESP_SEQ_NUM" field.

Signed-off-by: Michael Baum <michaelba at nvidia.com>
Acked-by: Suanming Mou <suanmingm at nvidia.com>
---
 doc/guides/nics/mlx5.rst              |  1 +
 drivers/net/mlx5/hws/mlx5dr_definer.c | 22 ++++++++++++++++++++--
 drivers/net/mlx5/mlx5_flow_hw.c       |  3 +++
 3 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index c0a5768117..d7bf81161e 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -434,6 +434,7 @@ Limitations
   - Only single item is supported per pattern template.
   - Only 32-bit comparison is supported or 16-bits for random field.
   - Only supported for ``RTE_FLOW_FIELD_META``, ``RTE_FLOW_FIELD_TAG``,
+    ``RTE_FLOW_FIELD_ESP_SEQ_NUM``,
     ``RTE_FLOW_FIELD_RANDOM`` and ``RTE_FLOW_FIELD_VALUE``.
   - The field type ``RTE_FLOW_FIELD_VALUE`` must be the base (``b``) field.
   - The field type ``RTE_FLOW_FIELD_RANDOM`` can only be compared with
diff --git a/drivers/net/mlx5/hws/mlx5dr_definer.c b/drivers/net/mlx5/hws/mlx5dr_definer.c
index 45e5bc5a61..c1508e6b53 100644
--- a/drivers/net/mlx5/hws/mlx5dr_definer.c
+++ b/drivers/net/mlx5/hws/mlx5dr_definer.c
@@ -424,10 +424,20 @@ mlx5dr_definer_compare_base_value_set(const void *item_spec,
 
 	value = (const uint32_t *)&b->value[0];
 
-	if (a->field == RTE_FLOW_FIELD_RANDOM)
+	switch (a->field) {
+	case RTE_FLOW_FIELD_RANDOM:
 		*base = htobe32(*value << 16);
-	else
+		break;
+	case RTE_FLOW_FIELD_TAG:
+	case RTE_FLOW_FIELD_META:
 		*base = htobe32(*value);
+		break;
+	case RTE_FLOW_FIELD_ESP_SEQ_NUM:
+		*base = *value;
+		break;
+	default:
+		break;
+	}
 
 	MLX5_SET(ste_match_4dw_range_ctrl_dw, ctrl, base0, 1);
 }
@@ -2930,6 +2940,14 @@ mlx5dr_definer_conv_item_compare_field(const struct rte_flow_field_data *f,
 		fc->compare_idx = dw_offset;
 		DR_CALC_SET_HDR(fc, random_number, random_number);
 		break;
+	case RTE_FLOW_FIELD_ESP_SEQ_NUM:
+		fc = &cd->fc[MLX5DR_DEFINER_FNAME_ESP_SEQUENCE_NUMBER];
+		fc->item_idx = item_idx;
+		fc->tag_set = &mlx5dr_definer_compare_set;
+		fc->tag_mask_set = &mlx5dr_definer_ones_set;
+		fc->compare_idx = dw_offset;
+		DR_CALC_SET_HDR(fc, ipsec, sequence_number);
+		break;
 	default:
 		DR_LOG(ERR, "%u field is not supported", f->field);
 		goto err_notsup;
diff --git a/drivers/net/mlx5/mlx5_flow_hw.c b/drivers/net/mlx5/mlx5_flow_hw.c
index f31ba2df2b..531c90e0ee 100644
--- a/drivers/net/mlx5/mlx5_flow_hw.c
+++ b/drivers/net/mlx5/mlx5_flow_hw.c
@@ -6729,6 +6729,7 @@ flow_hw_item_compare_field_validate(enum rte_flow_field_id arg_field,
 	switch (arg_field) {
 	case RTE_FLOW_FIELD_TAG:
 	case RTE_FLOW_FIELD_META:
+	case RTE_FLOW_FIELD_ESP_SEQ_NUM:
 		break;
 	case RTE_FLOW_FIELD_RANDOM:
 		if (base_field == RTE_FLOW_FIELD_VALUE)
@@ -6747,6 +6748,7 @@ flow_hw_item_compare_field_validate(enum rte_flow_field_id arg_field,
 	case RTE_FLOW_FIELD_TAG:
 	case RTE_FLOW_FIELD_META:
 	case RTE_FLOW_FIELD_VALUE:
+	case RTE_FLOW_FIELD_ESP_SEQ_NUM:
 		break;
 	default:
 		return rte_flow_error_set(error, ENOTSUP,
@@ -6763,6 +6765,7 @@ flow_hw_item_compare_width_supported(enum rte_flow_field_id field)
 	switch (field) {
 	case RTE_FLOW_FIELD_TAG:
 	case RTE_FLOW_FIELD_META:
+	case RTE_FLOW_FIELD_ESP_SEQ_NUM:
 		return 32;
 	case RTE_FLOW_FIELD_RANDOM:
 		return 16;
-- 
2.25.1