[PATCH 03/15] net/cnxk: release LBK bpid for after freeing resources

[Nithin Dabilpuram <ndabilpuram@marvell.com>]

From: Rakesh Kudurumalla <rkudurumalla@marvell.com>

bpids are not disabled while freeing resources for NIX
device as a result a new bpid is assigned which leads
to exhaustion of bpid's after soft exit of application.
This patch fixes the same

Signed-off-by: Rakesh Kudurumalla <rkudurumalla@marvell.com>
---
 drivers/net/cnxk/cnxk_ethdev.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/drivers/net/cnxk/cnxk_ethdev.c b/drivers/net/cnxk/cnxk_ethdev.c
index 22072d29b0..e99335b117 100644
--- a/drivers/net/cnxk/cnxk_ethdev.c
+++ b/drivers/net/cnxk/cnxk_ethdev.c
@@ -900,6 +900,27 @@ cnxk_rss_ethdev_to_nix(struct cnxk_eth_dev *dev, uint64_t ethdev_rss,
 	return flowkey_cfg;
 }
 
+static int
+nix_rxchan_cfg_disable(struct cnxk_eth_dev *dev)
+{
+	struct roc_nix *nix = &dev->nix;
+	struct roc_nix_fc_cfg fc_cfg;
+	int rc;
+
+	if (!roc_nix_is_lbk(nix))
+		return 0;
+
+	memset(&fc_cfg, 0, sizeof(struct roc_nix_fc_cfg));
+	fc_cfg.type = ROC_NIX_FC_RXCHAN_CFG;
+	fc_cfg.rxchan_cfg.enable = false;
+	rc = roc_nix_fc_config_set(nix, &fc_cfg);
+	if (rc) {
+		plt_err("Failed to setup flow control, rc=%d(%s)", rc, roc_error_msg_get(rc));
+		return rc;
+	}
+	return 0;
+}
+
 static void
 nix_free_queue_mem(struct cnxk_eth_dev *dev)
 {
@@ -1218,6 +1239,7 @@ cnxk_nix_configure(struct rte_eth_dev *eth_dev)
 			goto fail_configure;
 
 		roc_nix_tm_fini(nix);
+		nix_rxchan_cfg_disable(dev);
 		roc_nix_lf_free(nix);
 	}
 
@@ -1456,6 +1478,7 @@ cnxk_nix_configure(struct rte_eth_dev *eth_dev)
 	roc_nix_tm_fini(nix);
 free_nix_lf:
 	nix_free_queue_mem(dev);
+	rc |= nix_rxchan_cfg_disable(dev);
 	rc |= roc_nix_lf_free(nix);
 fail_configure:
 	dev->configured = 0;
@@ -2026,6 +2049,11 @@ cnxk_eth_dev_uninit(struct rte_eth_dev *eth_dev, bool reset)
 	/* Free ROC RQ's, SQ's and CQ's memory */
 	nix_free_queue_mem(dev);
 
+	/* free nix bpid */
+	rc = nix_rxchan_cfg_disable(dev);
+	if (rc)
+		plt_err("Failed to free nix bpid, rc=%d", rc);
+
 	/* Free nix lf resources */
 	rc = roc_nix_lf_free(nix);
 	if (rc)
-- 
2.25.1