[dpdk-dev] [PATCH v2 20/27] net/cnxk: support ops to create meter policy

[<skori@marvell.com>]

From: Sunil Kumar Kori <skori@marvell.com>

Implement API to add meter policy for CN10K platform.

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
Signed-off-by: Rakesh Kudurumalla <rkudurumalla@marvell.com>
---
v2:
 - Rebase support on latest DPDK
 - Handled multilevel chaining for linear hierarchy
 - Review comments incorporated

 drivers/net/cnxk/cn10k_ethdev_mtr.c | 84 +++++++++++++++++++++++++++++
 drivers/net/cnxk/cnxk_ethdev.c      |  1 +
 drivers/net/cnxk/cnxk_ethdev.h      | 31 +++++++++++
 3 files changed, 116 insertions(+)

diff --git a/drivers/net/cnxk/cn10k_ethdev_mtr.c b/drivers/net/cnxk/cn10k_ethdev_mtr.c
index 922b06cb2b..14f33cfe91 100644
--- a/drivers/net/cnxk/cn10k_ethdev_mtr.c
+++ b/drivers/net/cnxk/cn10k_ethdev_mtr.c
@@ -50,6 +50,18 @@ nix_mtr_profile_find(struct cnxk_eth_dev *dev, uint32_t profile_id)
 	return NULL;
 }
 
+static struct cnxk_mtr_policy_node *
+nix_mtr_policy_find(struct cnxk_eth_dev *dev, uint32_t meter_policy_id)
+{
+	struct cnxk_mtr_policy *fmps = &dev->mtr_policy;
+	struct cnxk_mtr_policy_node *fmp;
+
+	TAILQ_FOREACH(fmp, fmps, next)
+		if (meter_policy_id == fmp->id)
+			return fmp;
+	return NULL;
+}
+
 static int
 nix_mtr_profile_validate(struct cnxk_eth_dev *dev, uint32_t profile_id,
 			 struct rte_mtr_meter_profile *profile,
@@ -266,11 +278,83 @@ cn10k_nix_mtr_policy_validate(struct rte_eth_dev *dev,
 	return 0;
 }
 
+static void
+cn10k_fill_policy_actions(struct cnxk_mtr_policy_node *fmp,
+			  struct rte_mtr_meter_policy_params *policy)
+
+{
+	const struct rte_flow_action *action;
+	const struct rte_flow_action_meter *mtr;
+	int i;
+
+	for (i = 0; i < RTE_COLORS; i++) {
+		if (policy->actions[i]) {
+			for (action = policy->actions[i];
+			     action->type != RTE_FLOW_ACTION_TYPE_END;
+			     action++) {
+				if (action->type ==
+				    RTE_FLOW_ACTION_TYPE_METER) {
+					fmp->actions[i].action_fate =
+						action->type;
+					mtr = (const struct
+					       rte_flow_action_meter *)
+						      action->conf;
+					fmp->actions[i].mtr_id = mtr->mtr_id;
+				}
+
+				if (action->type == RTE_FLOW_ACTION_TYPE_DROP) {
+					fmp->actions[i].action_fate =
+						action->type;
+				}
+			}
+		}
+	}
+}
+
+static int
+cn10k_nix_mtr_policy_add(struct rte_eth_dev *eth_dev, uint32_t policy_id,
+			 struct rte_mtr_meter_policy_params *policy,
+			 struct rte_mtr_error *error)
+{
+	struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
+	struct cnxk_mtr_policy *fmps = &dev->mtr_policy;
+	struct cnxk_mtr_policy_node *fmp;
+	int rc;
+
+	fmp = nix_mtr_policy_find(dev, policy_id);
+	if (fmp) {
+		return -rte_mtr_error_set(error, EEXIST,
+					  RTE_MTR_ERROR_TYPE_METER_POLICY_ID,
+					  NULL, "Policy already exist");
+	}
+
+	fmp = plt_zmalloc(sizeof(struct cnxk_mtr_policy_node), ROC_ALIGN);
+	if (fmp == NULL) {
+		return -rte_mtr_error_set(error, ENOMEM,
+					  RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
+					  "Memory allocation failure");
+	} else {
+		rc = cn10k_nix_mtr_policy_validate(eth_dev, policy, error);
+		if (rc)
+			goto exit;
+	}
+
+	fmp->id = policy_id;
+	cn10k_fill_policy_actions(fmp, policy);
+	TAILQ_INSERT_TAIL(fmps, fmp, next);
+	return 0;
+
+exit:
+	plt_free(fmp);
+	return rc;
+}
+
 const struct rte_mtr_ops nix_mtr_ops = {
 	.capabilities_get = cn10k_nix_mtr_capabilities_get,
 	.meter_profile_add = cn10k_nix_mtr_profile_add,
 	.meter_profile_delete = cn10k_nix_mtr_profile_delete,
 	.meter_policy_validate = cn10k_nix_mtr_policy_validate,
+	.meter_policy_add = cn10k_nix_mtr_policy_add,
 };
 
 int
diff --git a/drivers/net/cnxk/cnxk_ethdev.c b/drivers/net/cnxk/cnxk_ethdev.c
index e952aa5ec5..9e75060513 100644
--- a/drivers/net/cnxk/cnxk_ethdev.c
+++ b/drivers/net/cnxk/cnxk_ethdev.c
@@ -508,6 +508,7 @@ static int
 nix_ingress_policer_setup(struct cnxk_eth_dev *dev)
 {
 	TAILQ_INIT(&dev->mtr_profiles);
+	TAILQ_INIT(&dev->mtr_policy);
 
 	return 0;
 }
diff --git a/drivers/net/cnxk/cnxk_ethdev.h b/drivers/net/cnxk/cnxk_ethdev.h
index 2b9b5beb83..4e45061c86 100644
--- a/drivers/net/cnxk/cnxk_ethdev.h
+++ b/drivers/net/cnxk/cnxk_ethdev.h
@@ -145,6 +145,35 @@ struct cnxk_timesync_info {
 	uint64_t *tx_tstamp;
 } __plt_cache_aligned;
 
+struct action_rss {
+	enum rte_eth_hash_function func;
+	uint32_t level;
+	uint64_t types;
+	uint32_t key_len;
+	uint32_t queue_num;
+	uint8_t *key;
+	uint16_t *queue;
+};
+
+struct policy_actions {
+	uint32_t action_fate;
+	union {
+		uint16_t queue;
+		uint32_t mtr_id;
+		struct action_rss *rss_desc;
+	};
+};
+
+struct cnxk_mtr_policy_node {
+	TAILQ_ENTRY(cnxk_mtr_policy_node) next;
+	/**< Pointer to the next flow meter structure. */
+	uint32_t id;	 /**< Policy id */
+	uint32_t mtr_id; /** Meter id */
+	struct rte_mtr_meter_policy_params policy;
+	struct policy_actions actions[RTE_COLORS];
+	uint32_t ref_cnt;
+};
+
 struct cnxk_mtr_profile_node {
 	TAILQ_ENTRY(cnxk_mtr_profile_node) next;
 	struct rte_mtr_meter_profile profile; /**< Profile detail. */
@@ -153,6 +182,7 @@ struct cnxk_mtr_profile_node {
 };
 
 TAILQ_HEAD(cnxk_mtr_profiles, cnxk_mtr_profile_node);
+TAILQ_HEAD(cnxk_mtr_policy, cnxk_mtr_policy_node);
 
 struct cnxk_eth_dev {
 	/* ROC NIX */
@@ -223,6 +253,7 @@ struct cnxk_eth_dev {
 
 	/* Ingress policer */
 	struct cnxk_mtr_profiles mtr_profiles;
+	struct cnxk_mtr_policy mtr_policy;
 
 	/* Rx burst for cleanup(Only Primary) */
 	eth_rx_burst_t rx_pkt_burst_no_offload;
-- 
2.25.1