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From: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
To: dev@dpdk.org
Cc: matan@mellanox.com, rasland@mellanox.com, thomas@monjalon.net,
	orika@mellanox.com, Yongseok Koh <yskoh@mellanox.com>
Subject: [dpdk-dev] [PATCH v2 13/19] net/mlx5: add flow tag support
Date: Wed,  6 Nov 2019 17:37:47 +0000
Message-ID: <1573061873-20898-14-git-send-email-viacheslavo@mellanox.com> (raw)
In-Reply-To: <1573061873-20898-1-git-send-email-viacheslavo@mellanox.com>

Add support of new rte_flow item and action - TAG and SET_TAG. TAG is
a transient value which can be kept during flow matching.

This is supported through device metadata register reg_c[]. Although
there are 8 registers are available on the current mlx5 device,
some of them can be reserved for firmware or kernel purposes.
The availability should be queried by iterative trial-and-error
mlx5_flow_discover_mreg_c() routine.

Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 232 +++++++++++++++++++++++++++++++++++++++-
 1 file changed, 228 insertions(+), 4 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 80280ab..fec2efe 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -872,10 +872,12 @@ struct field_modify_info modify_tcp[] = {
 		return rte_flow_error_set(error, EINVAL,
 					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 					  "too many items to modify");
+	assert(conf->id != REG_NONE);
+	assert(conf->id < RTE_DIM(reg_to_field));
 	actions[i].action_type = MLX5_MODIFICATION_TYPE_SET;
 	actions[i].field = reg_to_field[conf->id];
 	actions[i].data0 = rte_cpu_to_be_32(actions[i].data0);
-	actions[i].data1 = conf->data;
+	actions[i].data1 = rte_cpu_to_be_32(conf->data);
 	++i;
 	resource->actions_num = i;
 	if (!resource->actions_num)
@@ -886,6 +888,52 @@ struct field_modify_info modify_tcp[] = {
 }
 
 /**
+ * Convert SET_TAG action to DV specification.
+ *
+ * @param[in] dev
+ *   Pointer to the rte_eth_dev structure.
+ * @param[in,out] resource
+ *   Pointer to the modify-header resource.
+ * @param[in] conf
+ *   Pointer to action specification.
+ * @param[out] error
+ *   Pointer to the error structure.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_dv_convert_action_set_tag
+			(struct rte_eth_dev *dev,
+			 struct mlx5_flow_dv_modify_hdr_resource *resource,
+			 const struct rte_flow_action_set_tag *conf,
+			 struct rte_flow_error *error)
+{
+	rte_be32_t data = rte_cpu_to_be_32(conf->data);
+	rte_be32_t mask = rte_cpu_to_be_32(conf->mask);
+	struct rte_flow_item item = {
+		.spec = &data,
+		.mask = &mask,
+	};
+	struct field_modify_info reg_c_x[] = {
+		[1] = {0, 0, 0},
+	};
+	enum mlx5_modification_field reg_type;
+	int ret;
+
+	ret = mlx5_flow_get_reg_id(dev, MLX5_APP_TAG, conf->index, error);
+	if (ret < 0)
+		return ret;
+	assert(ret != REG_NONE);
+	assert((unsigned int)ret < RTE_DIM(reg_to_field));
+	reg_type = reg_to_field[ret];
+	assert(reg_type > 0);
+	reg_c_x[0] = (struct field_modify_info){4, 0, reg_type};
+	return flow_dv_convert_modify_action(&item, reg_c_x, NULL, resource,
+					     MLX5_MODIFICATION_TYPE_SET, error);
+}
+
+/**
  * Convert internal COPY_REG action to DV specification.
  *
  * @param[in] dev
@@ -1016,6 +1064,65 @@ struct field_modify_info modify_tcp[] = {
 }
 
 /**
+ * Validate TAG item.
+ *
+ * @param[in] dev
+ *   Pointer to the rte_eth_dev structure.
+ * @param[in] item
+ *   Item specification.
+ * @param[in] attr
+ *   Attributes of flow that includes this item.
+ * @param[out] error
+ *   Pointer to error structure.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_dv_validate_item_tag(struct rte_eth_dev *dev,
+			  const struct rte_flow_item *item,
+			  const struct rte_flow_attr *attr __rte_unused,
+			  struct rte_flow_error *error)
+{
+	const struct rte_flow_item_tag *spec = item->spec;
+	const struct rte_flow_item_tag *mask = item->mask;
+	const struct rte_flow_item_tag nic_mask = {
+		.data = RTE_BE32(UINT32_MAX),
+		.index = 0xff,
+	};
+	int ret;
+
+	if (!mlx5_flow_ext_mreg_supported(dev))
+		return rte_flow_error_set(error, ENOTSUP,
+					  RTE_FLOW_ERROR_TYPE_ITEM, item,
+					  "extensive metadata register"
+					  " isn't supported");
+	if (!spec)
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
+					  item->spec,
+					  "data cannot be empty");
+	if (!mask)
+		mask = &rte_flow_item_tag_mask;
+	ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
+					(const uint8_t *)&nic_mask,
+					sizeof(struct rte_flow_item_tag),
+					error);
+	if (ret < 0)
+		return ret;
+	if (mask->index != 0xff)
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ITEM_SPEC, NULL,
+					  "partial mask for tag index"
+					  " is not supported");
+	ret = mlx5_flow_get_reg_id(dev, MLX5_APP_TAG, spec->index, error);
+	if (ret < 0)
+		return ret;
+	assert(ret != REG_NONE);
+	return 0;
+}
+
+/**
  * Validate vport item.
  *
  * @param[in] dev
@@ -1376,6 +1483,62 @@ struct field_modify_info modify_tcp[] = {
 }
 
 /**
+ * Validate SET_TAG action.
+ *
+ * @param[in] dev
+ *   Pointer to the rte_eth_dev structure.
+ * @param[in] action
+ *   Pointer to the encap action.
+ * @param[in] action_flags
+ *   Holds the actions detected until now.
+ * @param[in] attr
+ *   Pointer to flow attributes
+ * @param[out] error
+ *   Pointer to error structure.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_dv_validate_action_set_tag(struct rte_eth_dev *dev,
+				const struct rte_flow_action *action,
+				uint64_t action_flags,
+				const struct rte_flow_attr *attr,
+				struct rte_flow_error *error)
+{
+	const struct rte_flow_action_set_tag *conf;
+	const uint64_t terminal_action_flags =
+		MLX5_FLOW_ACTION_DROP | MLX5_FLOW_ACTION_QUEUE |
+		MLX5_FLOW_ACTION_RSS;
+	int ret;
+
+	if (!mlx5_flow_ext_mreg_supported(dev))
+		return rte_flow_error_set(error, ENOTSUP,
+					  RTE_FLOW_ERROR_TYPE_ACTION, action,
+					  "extensive metadata register"
+					  " isn't supported");
+	if (!(action->conf))
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ACTION, action,
+					  "configuration cannot be null");
+	conf = (const struct rte_flow_action_set_tag *)action->conf;
+	if (!conf->mask)
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ACTION, action,
+					  "zero mask doesn't have any effect");
+	ret = mlx5_flow_get_reg_id(dev, MLX5_APP_TAG, conf->index, error);
+	if (ret < 0)
+		return ret;
+	if (!attr->transfer && attr->ingress &&
+	    (action_flags & terminal_action_flags))
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ACTION, action,
+					  "set_tag has no effect"
+					  " with terminal actions");
+	return 0;
+}
+
+/**
  * Validate count action.
  *
  * @param[in] dev
@@ -3765,6 +3928,13 @@ struct field_modify_info modify_tcp[] = {
 				return ret;
 			last_item = MLX5_FLOW_LAYER_ICMP6;
 			break;
+		case RTE_FLOW_ITEM_TYPE_TAG:
+			ret = flow_dv_validate_item_tag(dev, items,
+							attr, error);
+			if (ret < 0)
+				return ret;
+			last_item = MLX5_FLOW_ITEM_TAG;
+			break;
 		case MLX5_RTE_FLOW_ITEM_TYPE_TAG:
 		case MLX5_RTE_FLOW_ITEM_TYPE_TX_QUEUE:
 			break;
@@ -3812,6 +3982,17 @@ struct field_modify_info modify_tcp[] = {
 			action_flags |= MLX5_FLOW_ACTION_MARK;
 			++actions_n;
 			break;
+		case RTE_FLOW_ACTION_TYPE_SET_TAG:
+			ret = flow_dv_validate_action_set_tag(dev, actions,
+							      action_flags,
+							      attr, error);
+			if (ret < 0)
+				return ret;
+			/* Count all modify-header actions as one action. */
+			if (!(action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS))
+				++actions_n;
+			action_flags |= MLX5_FLOW_ACTION_SET_TAG;
+			break;
 		case RTE_FLOW_ACTION_TYPE_DROP:
 			ret = mlx5_flow_validate_action_drop(action_flags,
 							     attr, error);
@@ -5099,8 +5280,38 @@ struct field_modify_info modify_tcp[] = {
 {
 	const struct mlx5_rte_flow_item_tag *tag_v = item->spec;
 	const struct mlx5_rte_flow_item_tag *tag_m = item->mask;
-	enum modify_reg reg = tag_v->id;
 
+	assert(tag_v);
+	flow_dv_match_meta_reg(matcher, key, tag_v->id, tag_v->data,
+			       tag_m ? tag_m->data : UINT32_MAX);
+}
+
+/**
+ * Add TAG item to matcher
+ *
+ * @param[in] dev
+ *   The devich to configure through.
+ * @param[in, out] matcher
+ *   Flow matcher.
+ * @param[in, out] key
+ *   Flow matcher value.
+ * @param[in] item
+ *   Flow pattern to translate.
+ */
+static void
+flow_dv_translate_item_tag(struct rte_eth_dev *dev,
+			   void *matcher, void *key,
+			   const struct rte_flow_item *item)
+{
+	const struct rte_flow_item_tag *tag_v = item->spec;
+	const struct rte_flow_item_tag *tag_m = item->mask;
+	enum modify_reg reg;
+
+	assert(tag_v);
+	tag_m = tag_m ? tag_m : &rte_flow_item_tag_mask;
+	/* Get the metadata register index for the tag. */
+	reg = mlx5_flow_get_reg_id(dev, MLX5_APP_TAG, tag_v->index, NULL);
+	assert(reg > 0);
 	flow_dv_match_meta_reg(matcher, key, reg, tag_v->data, tag_m->data);
 }
 
@@ -5775,6 +5986,14 @@ struct field_modify_info modify_tcp[] = {
 				dev_flow->dv.tag_resource->action;
 			action_flags |= MLX5_FLOW_ACTION_MARK;
 			break;
+		case RTE_FLOW_ACTION_TYPE_SET_TAG:
+			if (flow_dv_convert_action_set_tag
+				(dev, &mhdr_res,
+				 (const struct rte_flow_action_set_tag *)
+				  actions->conf, error))
+				return -rte_errno;
+			action_flags |= MLX5_FLOW_ACTION_SET_TAG;
+			break;
 		case RTE_FLOW_ACTION_TYPE_DROP:
 			action_flags |= MLX5_FLOW_ACTION_DROP;
 			break;
@@ -6055,7 +6274,7 @@ struct field_modify_info modify_tcp[] = {
 			break;
 		case RTE_FLOW_ACTION_TYPE_END:
 			actions_end = true;
-			if (action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS) {
+			if (mhdr_res.actions_num) {
 				/* create modify action if needed. */
 				if (flow_dv_modify_hdr_resource_register
 					(dev, &mhdr_res, dev_flow, error))
@@ -6067,7 +6286,7 @@ struct field_modify_info modify_tcp[] = {
 		default:
 			break;
 		}
-		if ((action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS) &&
+		if (mhdr_res.actions_num &&
 		    modify_action_position == UINT32_MAX)
 			modify_action_position = actions_n++;
 	}
@@ -6230,6 +6449,11 @@ struct field_modify_info modify_tcp[] = {
 						      items, tunnel);
 			last_item = MLX5_FLOW_LAYER_ICMP6;
 			break;
+		case RTE_FLOW_ITEM_TYPE_TAG:
+			flow_dv_translate_item_tag(dev, match_mask,
+						   match_value, items);
+			last_item = MLX5_FLOW_ITEM_TAG;
+			break;
 		case MLX5_RTE_FLOW_ITEM_TYPE_TAG:
 			flow_dv_translate_mlx5_item_tag(match_mask,
 							match_value, items);
-- 
1.8.3.1


  parent reply index

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-05  8:01 [dpdk-dev] [PATCH 00/20] net/mlx5: implement extensive metadata feature Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 01/20] net/mlx5: convert internal tag endianness Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 02/20] net/mlx5: update modify header action translator Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 03/20] net/mlx5: add metadata register copy Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 04/20] net/mlx5: refactor flow structure Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 05/20] net/mlx5: update flow functions Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 06/20] net/mlx5: update meta register matcher set Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 07/20] net/mlx5: rename structure and function Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 08/20] net/mlx5: check metadata registers availability Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 09/20] net/mlx5: add devarg for extensive metadata support Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 10/20] net/mlx5: adjust shared register according to mask Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 11/20] net/mlx5: check the maximal modify actions number Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 12/20] net/mlx5: update metadata register id query Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 13/20] net/mlx5: add flow tag support Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 14/20] net/mlx5: extend flow mark support Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 15/20] net/mlx5: extend flow meta data support Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 16/20] net/mlx5: add meta data support to Rx datapath Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 17/20] net/mlx5: add simple hash table Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 18/20] net/mlx5: introduce flow splitters chain Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 19/20] net/mlx5: split Rx flows to provide metadata copy Viacheslav Ovsiienko
2019-11-05  8:01 ` [dpdk-dev] [PATCH 20/20] net/mlx5: add metadata register copy table Viacheslav Ovsiienko
2019-11-05  9:35 ` [dpdk-dev] [PATCH 00/20] net/mlx5: implement extensive metadata feature Matan Azrad
2019-11-06 17:37 ` [dpdk-dev] [PATCH v2 00/19] " Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 01/19] net/mlx5: convert internal tag endianness Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 02/19] net/mlx5: update modify header action translator Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 03/19] net/mlx5: add metadata register copy Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 04/19] net/mlx5: refactor flow structure Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 05/19] net/mlx5: update flow functions Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 06/19] net/mlx5: update meta register matcher set Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 07/19] net/mlx5: rename structure and function Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 08/19] net/mlx5: check metadata registers availability Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 09/19] net/mlx5: add devarg for extensive metadata support Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 10/19] net/mlx5: adjust shared register according to mask Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 11/19] net/mlx5: check the maximal modify actions number Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 12/19] net/mlx5: update metadata register id query Viacheslav Ovsiienko
2019-11-06 17:37   ` Viacheslav Ovsiienko [this message]
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 14/19] net/mlx5: extend flow mark support Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 15/19] net/mlx5: extend flow meta data support Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 16/19] net/mlx5: add meta data support to Rx datapath Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 17/19] net/mlx5: introduce flow splitters chain Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 18/19] net/mlx5: split Rx flows to provide metadata copy Viacheslav Ovsiienko
2019-11-06 17:37   ` [dpdk-dev] [PATCH v2 19/19] net/mlx5: add metadata register copy table Viacheslav Ovsiienko
2019-11-07 17:09 ` [dpdk-dev] [PATCH v3 00/19] net/mlx5: implement extensive metadata feature Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 01/19] net/mlx5: convert internal tag endianness Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 02/19] net/mlx5: update modify header action translator Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 03/19] net/mlx5: add metadata register copy Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 04/19] net/mlx5: refactor flow structure Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 05/19] net/mlx5: update flow functions Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 06/19] net/mlx5: update meta register matcher set Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 07/19] net/mlx5: rename structure and function Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 08/19] net/mlx5: check metadata registers availability Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 09/19] net/mlx5: add devarg for extensive metadata support Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 10/19] net/mlx5: adjust shared register according to mask Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 11/19] net/mlx5: check the maximal modify actions number Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 12/19] net/mlx5: update metadata register id query Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 13/19] net/mlx5: add flow tag support Viacheslav Ovsiienko
2019-11-07 17:09   ` [dpdk-dev] [PATCH v3 14/19] net/mlx5: extend flow mark support Viacheslav Ovsiienko
2019-11-07 17:10   ` [dpdk-dev] [PATCH v3 15/19] net/mlx5: extend flow meta data support Viacheslav Ovsiienko
2019-11-07 17:10   ` [dpdk-dev] [PATCH v3 16/19] net/mlx5: add meta data support to Rx datapath Viacheslav Ovsiienko
2019-11-25 14:24     ` David Marchand
2019-11-07 17:10   ` [dpdk-dev] [PATCH v3 17/19] net/mlx5: introduce flow splitters chain Viacheslav Ovsiienko
2019-11-07 17:10   ` [dpdk-dev] [PATCH v3 18/19] net/mlx5: split Rx flows to provide metadata copy Viacheslav Ovsiienko
2019-11-07 17:10   ` [dpdk-dev] [PATCH v3 19/19] net/mlx5: add metadata register copy table Viacheslav Ovsiienko
2019-11-07 22:46   ` [dpdk-dev] [PATCH v3 00/19] net/mlx5: implement extensive metadata feature Raslan Darawsheh

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	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 dev dev/ http://inbox.dpdk.org/dev \
		dev@dpdk.org
	public-inbox-index dev


Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.dev


AGPL code for this site: git clone https://public-inbox.org/ public-inbox