[dpdk-stable] patch 'net/qede: fix memory alloc for multiple port reconfig' has been queued to stable release 18.05.1

[Christian Ehrhardt]

Hi,

FYI, your patch has been queued to stable release 18.05.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 08/01/18. So please
shout if anyone has objections.

Thanks.

Christian Ehrhardt <christian.ehrhardt at canonical.com>

---
>From ec15251501fdc2fca1f2e946563488efb73bb3ed Mon Sep 17 00:00:00 2001
From: Rasesh Mody <rasesh.mody at cavium.com>
Date: Thu, 7 Jun 2018 09:30:20 -0700
Subject: [PATCH] net/qede: fix memory alloc for multiple port reconfig

[ upstream commit 7105b24f4bb89b23b8efeb516d5b69d85e18568f ]

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")

Signed-off-by: Rasesh Mody <rasesh.mody at cavium.com>
Reviewed-by: Kevin Traynor <ktraynor at 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;
 		}
 	}
-- 
2.17.1