From 36a62d0d627d4858a97768d5ff1d72b4bd0abd8e Mon Sep 17 00:00:00 2001
From: Rasesh Mody <rasesh.mody@cavium.com>
Date: Thu, 7 Jun 2018 09:30:20 -0700
Subject: [PATCH] net/qede: fix memory alloc for multiple port reconfig

Multiple port reconfigurations can lead to memory allocation failures
due to hitting RTE memzone limit or no more room in config while
reserving memzone.

When freeing memzones, update the memzone mapping and the memzone count.
Release Rx and Tx queue rings allocated during queue setup.

Fixes: a39001d90dbd ("net/qede: fix DMA memory leak")
Cc: stable@dpdk.org

Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>
Reviewed-by: Kevin Traynor <ktraynor@redhat.com>
---
 drivers/net/qede/base/bcm_osal.c |  5 +++++
 drivers/net/qede/qede_rxtx.c     | 21 +++++++++++----------
 2 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/drivers/net/qede/base/bcm_osal.c b/drivers/net/qede/base/bcm_osal.c
index ca1c2b113..72627dfec 100644
--- a/drivers/net/qede/base/bcm_osal.c
+++ b/drivers/net/qede/base/bcm_osal.c
@@ -201,6 +201,11 @@ void osal_dma_free_mem(struct ecore_dev *p_dev, dma_addr_t phys)
 			DP_VERBOSE(p_dev, ECORE_MSG_SP,
 				"Free memzone %s\n", ecore_mz_mapping[j]->name);
 			rte_memzone_free(ecore_mz_mapping[j]);
+			while (j < ecore_mz_count - 1) {
+				ecore_mz_mapping[j] = ecore_mz_mapping[j + 1];
+				j++;
+			}
+			ecore_mz_count--;
 			return;
 		}
 	}
diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c
index bdb5d6f11..4fa1c615b 100644
--- a/drivers/net/qede/qede_rxtx.c
+++ b/drivers/net/qede/qede_rxtx.c
@@ -192,9 +192,15 @@ static void qede_rx_queue_release_mbufs(struct qede_rx_queue *rxq)
 void qede_rx_queue_release(void *rx_queue)
 {
 	struct qede_rx_queue *rxq = rx_queue;
+	struct qede_dev *qdev = rxq->qdev;
+	struct ecore_dev *edev = QEDE_INIT_EDEV(qdev);
+
+	PMD_INIT_FUNC_TRACE(edev);
 
 	if (rxq) {
 		qede_rx_queue_release_mbufs(rxq);
+		qdev->ops->common->chain_free(edev, &rxq->rx_bd_ring);
+		qdev->ops->common->chain_free(edev, &rxq->rx_comp_ring);
 		rte_free(rxq->sw_rx_ring);
 		rte_free(rxq);
 	}
@@ -350,9 +356,14 @@ static void qede_tx_queue_release_mbufs(struct qede_tx_queue *txq)
 void qede_tx_queue_release(void *tx_queue)
 {
 	struct qede_tx_queue *txq = tx_queue;
+	struct qede_dev *qdev = txq->qdev;
+	struct ecore_dev *edev = QEDE_INIT_EDEV(qdev);
+
+	PMD_INIT_FUNC_TRACE(edev);
 
 	if (txq) {
 		qede_tx_queue_release_mbufs(txq);
+		qdev->ops->common->chain_free(edev, &txq->tx_pbl);
 		rte_free(txq->sw_tx_ring);
 		rte_free(txq);
 	}
@@ -441,8 +452,6 @@ void qede_dealloc_fp_resc(struct rte_eth_dev *eth_dev)
 	struct qede_dev *qdev = QEDE_INIT_QDEV(eth_dev);
 	struct ecore_dev *edev = QEDE_INIT_EDEV(qdev);
 	struct qede_fastpath *fp;
-	struct qede_rx_queue *rxq;
-	struct qede_tx_queue *txq;
 	uint16_t sb_idx;
 	uint8_t i;
 
@@ -467,21 +476,13 @@ void qede_dealloc_fp_resc(struct rte_eth_dev *eth_dev)
 	for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
 		if (eth_dev->data->rx_queues[i]) {
 			qede_rx_queue_release(eth_dev->data->rx_queues[i]);
-			rxq = eth_dev->data->rx_queues[i];
-			qdev->ops->common->chain_free(edev,
-						      &rxq->rx_bd_ring);
-			qdev->ops->common->chain_free(edev,
-						      &rxq->rx_comp_ring);
 			eth_dev->data->rx_queues[i] = NULL;
 		}
 	}
 
 	for (i = 0; i < eth_dev->data->nb_tx_queues; i++) {
 		if (eth_dev->data->tx_queues[i]) {
-			txq = eth_dev->data->tx_queues[i];
 			qede_tx_queue_release(eth_dev->data->tx_queues[i]);
-			qdev->ops->common->chain_free(edev,
-						      &txq->tx_pbl);
 			eth_dev->data->tx_queues[i] = NULL;
 		}
 	}
-- 
2.17.0