[dpdk-stable] patch 'net/vmxnet3: set the queue shared buffer at start' has been queued to LTS release 16.11.7

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to LTS release 16.11.7

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/03/18. So please
shout if anyone has objections.

Thanks.

Luca Boccassi

---
>From 515e9bcd87792530f384a6f40649a7cf8c008734 Mon Sep 17 00:00:00 2001
From: Chas Williams <chas3 at att.com>
Date: Wed, 17 Jan 2018 10:04:56 -0500
Subject: [PATCH] net/vmxnet3: set the queue shared buffer at start

[ upstream commit 3e5810f31d9cafe1a49a098372467c1eda3bf4aa ]

If a reconfiguration happens, queuedesc is reallocated.  Any queues that
are preserved point to the previous queuedesc since the queues are only
configured during queue setup.  Delay configuration of the shared queue
pointers until device start when queuedesc is no longer changing.

Fixes: 8618d19b52b1 ("net/vmxnet3: reallocate shared memzone on re-config")

Signed-off-by: Chas Williams <chas3 at att.com>
Acked-by: Shrikrishna Khare <skhare at vmware.com>
---
 drivers/net/vmxnet3/vmxnet3_ethdev.c | 4 ++++
 drivers/net/vmxnet3/vmxnet3_rxtx.c   | 4 ++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.c b/drivers/net/vmxnet3/vmxnet3_ethdev.c
index 9a889c6fb..effb360b4 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethdev.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethdev.c
@@ -488,6 +488,8 @@ vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 		Vmxnet3_TxQueueDesc *tqd = &hw->tqd_start[i];
 		vmxnet3_tx_queue_t *txq  = dev->data->tx_queues[i];
 
+		txq->shared = &hw->tqd_start[i];
+
 		tqd->ctrl.txNumDeferred  = 0;
 		tqd->ctrl.txThreshold    = 1;
 		tqd->conf.txRingBasePA   = txq->cmd_ring.basePA;
@@ -507,6 +509,8 @@ vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 		Vmxnet3_RxQueueDesc *rqd  = &hw->rqd_start[i];
 		vmxnet3_rx_queue_t *rxq   = dev->data->rx_queues[i];
 
+		rxq->shared = &hw->rqd_start[i];
+
 		rqd->conf.rxRingBasePA[0] = rxq->cmd_ring[0].basePA;
 		rqd->conf.rxRingBasePA[1] = rxq->cmd_ring[1].basePA;
 		rqd->conf.compRingBasePA  = rxq->comp_ring.basePA;
diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c b/drivers/net/vmxnet3/vmxnet3_rxtx.c
index 5ef7773b1..0a695883e 100644
--- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
+++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
@@ -862,7 +862,7 @@ vmxnet3_dev_tx_queue_setup(struct rte_eth_dev *dev,
 
 	txq->queue_id = queue_idx;
 	txq->port_id = dev->data->port_id;
-	txq->shared = &hw->tqd_start[queue_idx];
+	txq->shared = NULL; /* set in vmxnet3_setup_driver_shared() */
 	txq->hw = hw;
 	txq->qid = queue_idx;
 	txq->stopped = TRUE;
@@ -963,7 +963,7 @@ vmxnet3_dev_rx_queue_setup(struct rte_eth_dev *dev,
 	rxq->mp = mp;
 	rxq->queue_id = queue_idx;
 	rxq->port_id = dev->data->port_id;
-	rxq->shared = &hw->rqd_start[queue_idx];
+	rxq->shared = NULL; /* set in vmxnet3_setup_driver_shared() */
 	rxq->hw = hw;
 	rxq->qid1 = queue_idx;
 	rxq->qid2 = queue_idx + hw->num_rx_queues;
-- 
2.14.2