[dpdk-stable] patch 'net/bnxt: fix Rx mbuf and agg ring leak in dev stop' has been queued to stable release 18.02.2

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 18.02.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/16/18. So please
shout if anyone has objections.

Thanks.

Luca Boccassi

---
>From de3fae4aaf8d47dce4bad353a1910bcfc402b038 Mon Sep 17 00:00:00 2001
From: Xiaoxin Peng <xiaoxin.peng at broadcom.com>
Date: Mon, 30 Apr 2018 18:06:14 -0700
Subject: [PATCH] net/bnxt: fix Rx mbuf and agg ring leak in dev stop

[ upstream commit 3f07f2da6ca91febb67816ce8818cbdec4976413 ]

In the start/stop_op operation, mbufs allocated for rings were not freed

1) add bnxt_free_tx_mbuf/bnxt_free_rx_mbuf in bnxt_dev_stop_op to free MBUF
   before freeing the rings.
2) MBUF allocation and free routines were not in sync. Allocation uses the
   ring->ring_size including any rounded up and multiple factors while the
   free routine uses the requested queue size.

Fixes: c09f57b49c13 ("net/bnxt: add start/stop/link update operations")

Signed-off-by: Jay Ding <jay.ding at broadcom.com>
Signed-off-by: Scott Branden <scott.branden at broadcom.com>
Reviewed-by: Ray Jui <ray.jui at broadcom.com>
Reviewed-by: Randy Schacher <stuart.schacher at broadcom.com>
Signed-off-by: Xiaoxin Peng <xiaoxin.peng at broadcom.com>
Signed-off-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
---
 drivers/net/bnxt/bnxt_ethdev.c | 4 ++--
 drivers/net/bnxt/bnxt_rxq.c    | 6 ++++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 90eb787f4..a74afc831 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -646,6 +646,8 @@ static void bnxt_dev_stop_op(struct rte_eth_dev *eth_dev)
 	}
 	bnxt_set_hwrm_link_config(bp, false);
 	bnxt_hwrm_port_clr_stats(bp);
+	bnxt_free_tx_mbufs(bp);
+	bnxt_free_rx_mbufs(bp);
 	bnxt_shutdown_nic(bp);
 	bp->dev_stopped = 1;
 }
@@ -657,8 +659,6 @@ static void bnxt_dev_close_op(struct rte_eth_dev *eth_dev)
 	if (bp->dev_stopped == 0)
 		bnxt_dev_stop_op(eth_dev);
 
-	bnxt_free_tx_mbufs(bp);
-	bnxt_free_rx_mbufs(bp);
 	bnxt_free_mem(bp);
 	if (eth_dev->data->mac_addrs != NULL) {
 		rte_free(eth_dev->data->mac_addrs);
diff --git a/drivers/net/bnxt/bnxt_rxq.c b/drivers/net/bnxt/bnxt_rxq.c
index 33cca9263..e5749b974 100644
--- a/drivers/net/bnxt/bnxt_rxq.c
+++ b/drivers/net/bnxt/bnxt_rxq.c
@@ -237,7 +237,8 @@ static void bnxt_rx_queue_release_mbufs(struct bnxt_rx_queue *rxq)
 	if (rxq) {
 		sw_ring = rxq->rx_ring->rx_buf_ring;
 		if (sw_ring) {
-			for (i = 0; i < rxq->nb_rx_desc; i++) {
+			for (i = 0;
+			     i < rxq->rx_ring->rx_ring_struct->ring_size; i++) {
 				if (sw_ring[i].mbuf) {
 					rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 					sw_ring[i].mbuf = NULL;
@@ -247,7 +248,8 @@ static void bnxt_rx_queue_release_mbufs(struct bnxt_rx_queue *rxq)
 		/* Free up mbufs in Agg ring */
 		sw_ring = rxq->rx_ring->ag_buf_ring;
 		if (sw_ring) {
-			for (i = 0; i < rxq->nb_rx_desc; i++) {
+			for (i = 0;
+			     i < rxq->rx_ring->ag_ring_struct->ring_size; i++) {
 				if (sw_ring[i].mbuf) {
 					rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 					sw_ring[i].mbuf = NULL;
-- 
2.14.2