[dpdk-dev] [PATCH 23/27] net/cnxk: support ops to delete meter

[<skori@marvell.com>]

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

Implement API to delete meter instance for CN10K platform.

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
---
 drivers/net/cnxk/cn10k_ethdev_mtr.c | 82 +++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)

diff --git a/drivers/net/cnxk/cn10k_ethdev_mtr.c b/drivers/net/cnxk/cn10k_ethdev_mtr.c
index dbf74249c7..6b19e34361 100644
--- a/drivers/net/cnxk/cn10k_ethdev_mtr.c
+++ b/drivers/net/cnxk/cn10k_ethdev_mtr.c
@@ -8,6 +8,10 @@
 #define NIX_MTR_COUNT_MAX      73 /* 64(leaf) + 8(mid) + 1(top) */
 #define NIX_MTR_COUNT_PER_FLOW 3  /* 1(leaf) + 1(mid) + 1(top) */
 
+static const enum roc_nix_bpf_level_flag lvl_map[] = {ROC_NIX_BPF_LEVEL_F_LEAF,
+						      ROC_NIX_BPF_LEVEL_F_MID,
+						      ROC_NIX_BPF_LEVEL_F_TOP};
+
 static struct rte_mtr_capabilities mtr_capa = {
 	.n_max = NIX_MTR_COUNT_MAX,
 	.n_shared_max = NIX_MTR_COUNT_PER_FLOW,
@@ -391,6 +395,83 @@ cn10k_nix_mtr_create(struct rte_eth_dev *eth_dev, uint32_t mtr_id,
 	return 0;
 }
 
+static int
+cn10k_nix_mtr_destroy(struct rte_eth_dev *eth_dev, uint32_t mtr_id,
+		      struct rte_mtr_error *error)
+{
+	struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
+	struct roc_nix_bpf_objs profs = {0};
+	struct cn10k_mtr *fm = &dev->mtr;
+	struct roc_nix *nix = &dev->nix;
+	struct cn10k_flow_meter *mtr;
+	int rc = 0;
+
+	mtr = nix_mtr_find(dev, mtr_id);
+	if (mtr == NULL) {
+		return -rte_mtr_error_set(error, ENOENT,
+					  RTE_MTR_ERROR_TYPE_MTR_ID, &mtr_id,
+					  "Meter id is invalid.");
+	} else {
+		if (!mtr->ref_cnt) {
+			switch (lvl_map[mtr->level]) {
+			case ROC_NIX_BPF_LEVEL_F_LEAF:
+				if (mtr->is_next) {
+					rc = roc_nix_bpf_connect(nix,
+						ROC_NIX_BPF_LEVEL_F_LEAF,
+						mtr_id,
+						ROC_NIX_BPF_ID_INVALID);
+				}
+				break;
+			case ROC_NIX_BPF_LEVEL_F_MID:
+				if (mtr->is_prev) {
+					rc = roc_nix_bpf_connect(nix,
+						ROC_NIX_BPF_LEVEL_F_LEAF,
+						mtr->prev_id,
+						ROC_NIX_BPF_ID_INVALID);
+				}
+				if (mtr->is_next) {
+					rc = roc_nix_bpf_connect(nix,
+						ROC_NIX_BPF_LEVEL_F_MID, mtr_id,
+						ROC_NIX_BPF_ID_INVALID);
+				}
+				break;
+			case ROC_NIX_BPF_LEVEL_F_TOP:
+				if (mtr->is_prev) {
+					rc = roc_nix_bpf_connect(nix,
+						ROC_NIX_BPF_LEVEL_F_MID,
+						mtr->prev_id,
+						ROC_NIX_BPF_ID_INVALID);
+				}
+				break;
+			default:
+				return -rte_mtr_error_set(error, EINVAL,
+						  RTE_MTR_ERROR_TYPE_MTR_ID,
+						  NULL, "Invalid meter level");
+			}
+
+			if (rc)
+				goto exit;
+
+			profs.level = mtr->level;
+			profs.count = 1;
+			profs.ids[0] = mtr->bpf_id;
+			rc = roc_nix_bpf_free(nix, &profs, 1);
+			if (rc)
+				goto exit;
+
+			TAILQ_REMOVE(fm, mtr, next);
+			plt_free(fm);
+		} else {
+			return -rte_mtr_error_set(error, EADDRINUSE,
+						  RTE_MTR_ERROR_TYPE_MTR_ID,
+						  &mtr_id, "Meter id in use.");
+		}
+	}
+
+exit:
+	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,
@@ -399,6 +480,7 @@ const struct rte_mtr_ops nix_mtr_ops = {
 	.meter_policy_add = cn10k_nix_mtr_policy_add,
 	.meter_policy_delete = cn10k_nix_mtr_policy_delete,
 	.create = cn10k_nix_mtr_create,
+	.destroy = cn10k_nix_mtr_destroy,
 };
 
 int
-- 
2.25.1