net/dpaa: improve port cleanup

During DPAA cleanup in FMCLESS mode, application can
see segmentation fault in device close API and in DPAA
destructor execution.
Segmentation fault in device close is because driver
reducing the number of queues initialised during
device configuration without releasing the actual queues.

And segmentation fault in DPAA destruction is because
it is trying to access RTE* devices whose memory has
been released in rte_eal_cleanup() call by the application.

This patch improves the behavior.

Signed-off-by: Gagandeep Singh <[email protected]>
Acked-by: Hemant Agrawal <[email protected]>

Author: Gagandeep Singh

drivers/net/dpaa/dpaa_ethdev.c

@@ -561,10 +561,10 @@ static int dpaa_eth_dev_close(struct rte_eth_dev *dev)
 	if (dpaa_intf->cgr_rx) {
 		for (loop = 0; loop < dpaa_intf->nb_rx_queues; loop++)
 			qman_delete_cgr(&dpaa_intf->cgr_rx[loop]);
+		rte_free(dpaa_intf->cgr_rx);
+		dpaa_intf->cgr_rx = NULL;
 	}
 
-	rte_free(dpaa_intf->cgr_rx);
-	dpaa_intf->cgr_rx = NULL;
 	/* Release TX congestion Groups */
 	if (dpaa_intf->cgr_tx) {
 		for (loop = 0; loop < MAX_DPAA_CORES; loop++)
@@ -578,6 +578,15 @@ static int dpaa_eth_dev_close(struct rte_eth_dev *dev)
 
 	rte_free(dpaa_intf->tx_queues);
 	dpaa_intf->tx_queues = NULL;
+	if (dpaa_intf->port_handle) {
+		if (dpaa_fm_deconfig(dpaa_intf, fif))
+			DPAA_PMD_WARN("DPAA FM "
+				"deconfig failed\n");
+	}
+	if (fif->num_profiles) {
+		if (dpaa_port_vsp_cleanup(dpaa_intf, fif))
+			DPAA_PMD_WARN("DPAA FM vsp cleanup failed\n");
+	}
 
 	return ret;
 }
@@ -2607,26 +2616,6 @@ static void __attribute__((destructor(102))) dpaa_finish(void)
 		return;
 
 	if (!(default_q || fmc_q)) {
-		unsigned int i;
-
-		for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
-			if (rte_eth_devices[i].dev_ops == &dpaa_devops) {
-				struct rte_eth_dev *dev = &rte_eth_devices[i];
-				struct dpaa_if *dpaa_intf =
-					dev->data->dev_private;
-				struct fman_if *fif =
-					dev->process_private;
-				if (dpaa_intf->port_handle)
-					if (dpaa_fm_deconfig(dpaa_intf, fif))
-						DPAA_PMD_WARN("DPAA FM "
-							"deconfig failed");
-				if (fif->num_profiles) {
-					if (dpaa_port_vsp_cleanup(dpaa_intf,
-								  fif))
-						DPAA_PMD_WARN("DPAA FM vsp cleanup failed");
-				}
-			}
-		}
 		if (is_global_init)
 			if (dpaa_fm_term())
 				DPAA_PMD_WARN("DPAA FM term failed");

drivers/net/dpaa/dpaa_flow.c

@@ -13,6 +13,7 @@
 #include <rte_dpaa_logs.h>
 #include <fmlib/fm_port_ext.h>
 #include <fmlib/fm_vsp_ext.h>
+#include <rte_pmd_dpaa.h>
 
 #define DPAA_MAX_NUM_ETH_DEV	8
 
@@ -795,8 +796,6 @@ int dpaa_fm_config(struct rte_eth_dev *dev, uint64_t req_dist_set)
 		return -1;
 	}
 
-	dpaa_intf->nb_rx_queues = dev->data->nb_rx_queues;
-
 	/* Open FM Port and set it in port info */
 	ret = set_fm_port_handle(dpaa_intf, req_dist_set, fif);
 	if (ret) {
@@ -805,7 +804,7 @@ int dpaa_fm_config(struct rte_eth_dev *dev, uint64_t req_dist_set)
 	}
 
 	if (fif->num_profiles) {
-		for (i = 0; i < dpaa_intf->nb_rx_queues; i++)
+		for (i = 0; i < dev->data->nb_rx_queues; i++)
 			dpaa_intf->rx_queues[i].vsp_id =
 				fm_default_vsp_id(fif);