[dpdk-dev] [PATCH v2] drivers: enable keep flow rule device capability for cnxk

[<psatheesh@marvell.com>]

From: Kiran Kumar K <kirankumark@marvell.com>

Adding changes to enable keep flow rule device capability.
With this change, flow rules will be kept across device restart.

Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
Reviewed-by: Satheesh Paul <psatheesh@marvell.com>
---
v2:
* Allow creating flow rule before device start.

 drivers/common/cnxk/roc_npc.c      |  8 ++++++++
 drivers/common/cnxk/roc_npc.h      |  2 ++
 drivers/common/cnxk/roc_npc_mcam.c | 20 ++++++++++++++++++++
 drivers/common/cnxk/roc_npc_priv.h |  1 +
 drivers/common/cnxk/version.map    |  1 +
 drivers/net/cnxk/cnxk_ethdev.c     | 15 +++++++++++++--
 drivers/net/cnxk/cnxk_ethdev_ops.c |  4 ++--
 7 files changed, 47 insertions(+), 4 deletions(-)

diff --git a/drivers/common/cnxk/roc_npc.c b/drivers/common/cnxk/roc_npc.c
index e3961bfbc6..d470f53788 100644
--- a/drivers/common/cnxk/roc_npc.c
+++ b/drivers/common/cnxk/roc_npc.c
@@ -74,6 +74,14 @@ roc_npc_mcam_alloc_entries(struct roc_npc *roc_npc, int ref_entry,
 				      priority, resp_count);
 }
 
+int
+roc_npc_mcam_enable_all_entries(struct roc_npc *roc_npc, bool enable)
+{
+	struct npc *npc = roc_npc_to_npc_priv(roc_npc);
+
+	return npc_flow_enable_all_entries(npc, enable);
+}
+
 int
 roc_npc_mcam_alloc_entry(struct roc_npc *roc_npc, struct roc_npc_flow *mcam,
 			 struct roc_npc_flow *ref_mcam, int prio,
diff --git a/drivers/common/cnxk/roc_npc.h b/drivers/common/cnxk/roc_npc.h
index b836e264c6..f9e5028cab 100644
--- a/drivers/common/cnxk/roc_npc.h
+++ b/drivers/common/cnxk/roc_npc.h
@@ -309,6 +309,8 @@ roc_npc_flow_create(struct roc_npc *roc_npc, const struct roc_npc_attr *attr,
 int __roc_api roc_npc_flow_destroy(struct roc_npc *roc_npc,
 				   struct roc_npc_flow *flow);
 int __roc_api roc_npc_mcam_free_entry(struct roc_npc *roc_npc, uint32_t entry);
+int __roc_api roc_npc_mcam_enable_all_entries(struct roc_npc *roc_npc,
+					      bool enable);
 int __roc_api roc_npc_mcam_alloc_entry(struct roc_npc *roc_npc,
 				       struct roc_npc_flow *mcam,
 				       struct roc_npc_flow *ref_mcam, int prio,
diff --git a/drivers/common/cnxk/roc_npc_mcam.c b/drivers/common/cnxk/roc_npc_mcam.c
index b251f643bc..30eceeb883 100644
--- a/drivers/common/cnxk/roc_npc_mcam.c
+++ b/drivers/common/cnxk/roc_npc_mcam.c
@@ -780,6 +780,26 @@ npc_program_mcam(struct npc *npc, struct npc_parse_state *pst, bool mcam_alloc)
 		return 0;
 }
 
+int
+npc_flow_enable_all_entries(struct npc *npc, bool enable)
+{
+	struct npc_flow_list *list;
+	struct roc_npc_flow *flow;
+	int rc = 0, idx;
+
+	/* Free any MCAM counters and delete flow list */
+	for (idx = 0; idx < npc->flow_max_priority; idx++) {
+		list = &npc->flow_list[idx];
+		TAILQ_FOREACH(flow, list, next) {
+			flow->enable = enable;
+			rc = npc_mcam_write_entry(npc, flow);
+			if (rc)
+				return rc;
+		}
+	}
+	return rc;
+}
+
 int
 npc_flow_free_all_resources(struct npc *npc)
 {
diff --git a/drivers/common/cnxk/roc_npc_priv.h b/drivers/common/cnxk/roc_npc_priv.h
index afd11add9a..23e8675253 100644
--- a/drivers/common/cnxk/roc_npc_priv.h
+++ b/drivers/common/cnxk/roc_npc_priv.h
@@ -413,6 +413,7 @@ int npc_mcam_alloc_entries(struct npc *npc, int ref_mcam, int *alloc_entry,
 int npc_mcam_ena_dis_entry(struct npc *npc, struct roc_npc_flow *mcam,
 			   bool enable);
 int npc_mcam_write_entry(struct npc *npc, struct roc_npc_flow *mcam);
+int npc_flow_enable_all_entries(struct npc *npc, bool enable);
 int npc_update_parse_state(struct npc_parse_state *pst,
 			   struct npc_parse_item_info *info, int lid, int lt,
 			   uint8_t flags);
diff --git a/drivers/common/cnxk/version.map b/drivers/common/cnxk/version.map
index ad1b5e8476..75a260f11e 100644
--- a/drivers/common/cnxk/version.map
+++ b/drivers/common/cnxk/version.map
@@ -312,6 +312,7 @@ INTERNAL {
 	roc_npc_mcam_alloc_entries;
 	roc_npc_mcam_alloc_entry;
 	roc_npc_mcam_clear_counter;
+	roc_npc_mcam_enable_all_entries;
 	roc_npc_mcam_ena_dis_entry;
 	roc_npc_mcam_free_all_resources;
 	roc_npc_mcam_free_counter;
diff --git a/drivers/net/cnxk/cnxk_ethdev.c b/drivers/net/cnxk/cnxk_ethdev.c
index 53dfb5eae8..304272acab 100644
--- a/drivers/net/cnxk/cnxk_ethdev.c
+++ b/drivers/net/cnxk/cnxk_ethdev.c
@@ -1407,8 +1407,10 @@ cnxk_nix_dev_stop(struct rte_eth_dev *eth_dev)
 	int count, i, j, rc;
 	void *rxq;
 
-	/* Disable switch hdr pkind */
-	roc_nix_switch_hdr_set(&dev->nix, 0, 0, 0, 0);
+	/* Disable all the NPC entries */
+	rc = roc_npc_mcam_enable_all_entries(&dev->npc, 0);
+	if (rc)
+		return rc;
 
 	/* Stop link change events */
 	if (!roc_nix_is_vf_or_sdp(&dev->nix))
@@ -1483,6 +1485,12 @@ cnxk_nix_dev_start(struct rte_eth_dev *eth_dev)
 		return rc;
 	}
 
+	rc = roc_npc_mcam_enable_all_entries(&dev->npc, 1);
+	if (rc) {
+		plt_err("Failed to enable NPC entries %d", rc);
+		return rc;
+	}
+
 	cnxk_nix_toggle_flag_link_cfg(dev, true);
 
 	/* Start link change events */
@@ -1733,6 +1741,9 @@ cnxk_eth_dev_uninit(struct rte_eth_dev *eth_dev, bool reset)
 	struct roc_nix *nix = &dev->nix;
 	int rc, i;
 
+	/* Disable switch hdr pkind */
+	roc_nix_switch_hdr_set(&dev->nix, 0, 0, 0, 0);
+
 	plt_free(eth_dev->security_ctx);
 	eth_dev->security_ctx = NULL;
 
diff --git a/drivers/net/cnxk/cnxk_ethdev_ops.c b/drivers/net/cnxk/cnxk_ethdev_ops.c
index f20f201db2..1ae90092d6 100644
--- a/drivers/net/cnxk/cnxk_ethdev_ops.c
+++ b/drivers/net/cnxk/cnxk_ethdev_ops.c
@@ -67,8 +67,8 @@ cnxk_nix_info_get(struct rte_eth_dev *eth_dev, struct rte_eth_dev_info *devinfo)
 
 	devinfo->speed_capa = dev->speed_capa;
 	devinfo->dev_capa = RTE_ETH_DEV_CAPA_RUNTIME_RX_QUEUE_SETUP |
-			    RTE_ETH_DEV_CAPA_RUNTIME_TX_QUEUE_SETUP;
-	devinfo->dev_capa &= ~RTE_ETH_DEV_CAPA_FLOW_RULE_KEEP;
+			    RTE_ETH_DEV_CAPA_RUNTIME_TX_QUEUE_SETUP |
+			    RTE_ETH_DEV_CAPA_FLOW_RULE_KEEP;
 	return 0;
 }
 
-- 
2.25.4