[dpdk-dev] [PATCH v4 21/28] net/cnxk: support ops to delete meter policy

[<skori@marvell.com>]

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

Implement API to delete meter policy for CNXK platform.

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
Signed-off-by: Rakesh Kudurumalla <rkudurumalla@marvell.com>
---
v4:
 - Rebase support on dpdk-next-net-mrvl branch
 - Handled meter action during flow destroy
 - Handled meter cleanup during port shutdown
 
v3:
 - Rebase support on latest DPDK
 - Handled multilevel chaining for tree hierarchy
 - Fix naming convention
v2:
 - Rebase support on latest DPDK
 - Handled multilevel chaining for linear hierarchy
 - Review comments incorporated

 drivers/net/cnxk/cnxk_ethdev_mtr.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/drivers/net/cnxk/cnxk_ethdev_mtr.c b/drivers/net/cnxk/cnxk_ethdev_mtr.c
index 187a0b90b2..c3739749fc 100644
--- a/drivers/net/cnxk/cnxk_ethdev_mtr.c
+++ b/drivers/net/cnxk/cnxk_ethdev_mtr.c
@@ -349,12 +349,38 @@ cnxk_nix_mtr_policy_add(struct rte_eth_dev *eth_dev, uint32_t policy_id,
 	return rc;
 }
 
+static int
+cnxk_nix_mtr_policy_delete(struct rte_eth_dev *eth_dev, uint32_t policy_id,
+			    struct rte_mtr_error *error)
+{
+	struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
+	struct cnxk_mtr_policy_node *fmp;
+
+	fmp = nix_mtr_policy_find(dev, policy_id);
+	if (fmp == NULL) {
+		return -rte_mtr_error_set(error, ENOENT,
+					  RTE_MTR_ERROR_TYPE_METER_POLICY_ID,
+					  NULL, "No policy found");
+	}
+
+	if (fmp->ref_cnt)
+		return -rte_mtr_error_set(error, EBUSY,
+					  RTE_MTR_ERROR_TYPE_METER_POLICY_ID,
+					  NULL, "Meter policy is in use.");
+
+	TAILQ_REMOVE(&dev->mtr_policy, fmp, next);
+	plt_free(fmp);
+
+	return 0;
+}
+
 const struct rte_mtr_ops nix_mtr_ops = {
 	.capabilities_get = cnxk_nix_mtr_capabilities_get,
 	.meter_profile_add = cnxk_nix_mtr_profile_add,
 	.meter_profile_delete = cnxk_nix_mtr_profile_delete,
 	.meter_policy_validate = cnxk_nix_mtr_policy_validate,
 	.meter_policy_add = cnxk_nix_mtr_policy_add,
+	.meter_policy_delete = cnxk_nix_mtr_policy_delete,
 };
 
 int
-- 
2.25.1