[PATCH 22.11 4/7] net/nfp: fix resource leak for exit of flower firmware

[Chaoyong He]

[ upstream commit a256a1227dbe0eac576a42b6c336ce55b7713109 ]

Fix the resource leak problem in the exit logic of flower firmware.

Fixes: e1124c4f8a45 ("net/nfp: add flower representor framework")

Signed-off-by: Chaoyong He <chaoyong.he at corigine.com>
---
 drivers/net/nfp/flower/nfp_flower.c           | 70 ++++---------------
 drivers/net/nfp/flower/nfp_flower.h           |  1 +
 .../net/nfp/flower/nfp_flower_representor.c   | 64 +++++++++++++++++
 3 files changed, 79 insertions(+), 56 deletions(-)

diff --git a/drivers/net/nfp/flower/nfp_flower.c b/drivers/net/nfp/flower/nfp_flower.c
index 5896d20..28be1b9 100644
--- a/drivers/net/nfp/flower/nfp_flower.c
+++ b/drivers/net/nfp/flower/nfp_flower.c
@@ -182,61 +182,6 @@ nfp_flower_pf_stop(struct rte_eth_dev *dev)
 	return 0;
 }
 
-/* Reset and stop device. The device can not be restarted. */
-static int
-nfp_flower_pf_close(struct rte_eth_dev *dev)
-{
-	uint16_t i;
-	struct nfp_net_hw *hw;
-	struct nfp_pf_dev *pf_dev;
-	struct nfp_net_txq *this_tx_q;
-	struct nfp_net_rxq *this_rx_q;
-	struct nfp_flower_representor *repr;
-	struct nfp_app_fw_flower *app_fw_flower;
-
-	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
-		return 0;
-
-	repr = (struct nfp_flower_representor *)dev->data->dev_private;
-	hw = repr->app_fw_flower->pf_hw;
-	pf_dev = hw->pf_dev;
-	app_fw_flower = NFP_PRIV_TO_APP_FW_FLOWER(pf_dev->app_fw_priv);
-
-	/*
-	 * We assume that the DPDK application is stopping all the
-	 * threads/queues before calling the device close function.
-	 */
-	nfp_pf_repr_disable_queues(dev);
-
-	/* Clear queues */
-	for (i = 0; i < dev->data->nb_tx_queues; i++) {
-		this_tx_q = (struct nfp_net_txq *)dev->data->tx_queues[i];
-		nfp_net_reset_tx_queue(this_tx_q);
-	}
-
-	for (i = 0; i < dev->data->nb_rx_queues; i++) {
-		this_rx_q = (struct nfp_net_rxq *)dev->data->rx_queues[i];
-		nfp_net_reset_rx_queue(this_rx_q);
-	}
-
-	/* Cancel possible impending LSC work here before releasing the port*/
-	rte_eal_alarm_cancel(nfp_net_dev_interrupt_delayed_handler, (void *)dev);
-
-	nn_cfg_writeb(hw, NFP_NET_CFG_LSC, 0xff);
-
-	/* Now it is safe to free all PF resources */
-	PMD_DRV_LOG(INFO, "Freeing PF resources");
-	nfp_cpp_area_free(pf_dev->ctrl_area);
-	nfp_cpp_area_free(pf_dev->hwqueues_area);
-	free(pf_dev->hwinfo);
-	free(pf_dev->sym_tbl);
-	nfp_cpp_free(pf_dev->cpp);
-	rte_free(app_fw_flower);
-	rte_free(pf_dev);
-
-	return 0;
-}
-
 static const struct eth_dev_ops nfp_flower_pf_vnic_ops = {
 	.dev_infos_get          = nfp_net_infos_get,
 	.link_update            = nfp_net_link_update,
@@ -244,7 +189,6 @@ static const struct eth_dev_ops nfp_flower_pf_vnic_ops = {
 
 	.dev_start              = nfp_flower_pf_start,
 	.dev_stop               = nfp_flower_pf_stop,
-	.dev_close              = nfp_flower_pf_close,
 };
 
 static inline void
@@ -1221,6 +1165,20 @@ nfp_init_app_fw_flower(struct nfp_pf_dev *pf_dev)
 	return ret;
 }
 
+void
+nfp_uninit_app_fw_flower(struct nfp_pf_dev *pf_dev)
+{
+	struct nfp_app_fw_flower *app_fw_flower;
+
+	app_fw_flower = pf_dev->app_fw_priv;
+	nfp_flower_cleanup_ctrl_vnic(app_fw_flower->ctrl_hw);
+	nfp_cpp_area_free(app_fw_flower->ctrl_hw->ctrl_area);
+	nfp_cpp_area_free(pf_dev->ctrl_area);
+	rte_free(app_fw_flower->pf_hw);
+	nfp_flow_priv_uninit(pf_dev);
+	rte_free(app_fw_flower);
+}
+
 int
 nfp_secondary_init_app_fw_flower(struct nfp_cpp *cpp)
 {
diff --git a/drivers/net/nfp/flower/nfp_flower.h b/drivers/net/nfp/flower/nfp_flower.h
index c05a761..d82e35f 100644
--- a/drivers/net/nfp/flower/nfp_flower.h
+++ b/drivers/net/nfp/flower/nfp_flower.h
@@ -85,6 +85,7 @@ nfp_flower_support_decap_v2(const struct nfp_app_fw_flower *app_fw_flower)
 }
 
 int nfp_init_app_fw_flower(struct nfp_pf_dev *pf_dev);
+void nfp_uninit_app_fw_flower(struct nfp_pf_dev *pf_dev);
 int nfp_secondary_init_app_fw_flower(struct nfp_cpp *cpp);
 uint16_t nfp_flower_pf_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 		uint16_t nb_pkts);
diff --git a/drivers/net/nfp/flower/nfp_flower_representor.c b/drivers/net/nfp/flower/nfp_flower_representor.c
index 854d117..f615f02 100644
--- a/drivers/net/nfp/flower/nfp_flower_representor.c
+++ b/drivers/net/nfp/flower/nfp_flower_representor.c
@@ -561,12 +561,75 @@ nfp_flower_repr_free(struct nfp_flower_representor *repr,
 	}
 }
 
+/* Reset and stop device. The device can not be restarted. */
+static int
+nfp_flower_repr_dev_close(struct rte_eth_dev *dev)
+{
+	uint16_t i;
+	struct nfp_net_hw *hw;
+	struct nfp_pf_dev *pf_dev;
+	struct nfp_net_txq *this_tx_q;
+	struct nfp_net_rxq *this_rx_q;
+	struct nfp_flower_representor *repr;
+	struct nfp_app_fw_flower *app_fw_flower;
+
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return 0;
+
+	repr = dev->data->dev_private;
+	app_fw_flower = repr->app_fw_flower;
+	hw = app_fw_flower->pf_hw;
+	pf_dev = hw->pf_dev;
+
+	/*
+	 * We assume that the DPDK application is stopping all the
+	 * threads/queues before calling the device close function.
+	 */
+	nfp_net_disable_queues(dev);
+
+	/* Clear queues */
+	for (i = 0; i < dev->data->nb_tx_queues; i++) {
+		this_tx_q = dev->data->tx_queues[i];
+		nfp_net_reset_tx_queue(this_tx_q);
+	}
+
+	for (i = 0; i < dev->data->nb_rx_queues; i++) {
+		this_rx_q = dev->data->rx_queues[i];
+		nfp_net_reset_rx_queue(this_rx_q);
+	}
+
+	if (pf_dev->app_fw_id != NFP_APP_FW_FLOWER_NIC)
+		return -EINVAL;
+
+	nfp_flower_repr_free(repr, repr->repr_type);
+
+	for (i = 0; i < MAX_FLOWER_VFS; i++) {
+		if (app_fw_flower->vf_reprs[i] != NULL)
+			return 0;
+	}
+
+	for (i = 0; i < NFP_MAX_PHYPORTS; i++) {
+		if (app_fw_flower->phy_reprs[i] != NULL)
+			return 0;
+	}
+
+	if (app_fw_flower->pf_repr != NULL)
+		return 0;
+
+	/* Now it is safe to free all PF resources */
+	nfp_uninit_app_fw_flower(pf_dev);
+	nfp_pf_uninit(pf_dev);
+
+	return 0;
+}
+
 static const struct eth_dev_ops nfp_flower_pf_repr_dev_ops = {
 	.dev_infos_get        = nfp_flower_repr_dev_infos_get,
 
 	.dev_start            = nfp_flower_pf_start,
 	.dev_configure        = nfp_flower_repr_dev_configure,
 	.dev_stop             = nfp_flower_pf_stop,
+	.dev_close            = nfp_flower_repr_dev_close,
 
 	.rx_queue_setup       = nfp_pf_repr_rx_queue_setup,
 	.tx_queue_setup       = nfp_pf_repr_tx_queue_setup,
@@ -588,6 +651,7 @@ static const struct eth_dev_ops nfp_flower_repr_dev_ops = {
 	.dev_start            = nfp_flower_repr_dev_start,
 	.dev_configure        = nfp_flower_repr_dev_configure,
 	.dev_stop             = nfp_flower_repr_dev_stop,
+	.dev_close            = nfp_flower_repr_dev_close,
 
 	.rx_queue_setup       = nfp_flower_repr_rx_queue_setup,
 	.tx_queue_setup       = nfp_flower_repr_tx_queue_setup,
-- 
2.39.1