[dpdk-stable] patch 'net/ixgbe: fix PF DCB info' has been queued to stable release 17.08.1

[Yuanhan Liu]

Hi,

FYI, your patch has been queued to stable release 17.08.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/24/17. So please
shout if anyone has objections.

Thanks.

	--yliu

---
>From b2262809af07a1c4b31fd1e3b4dbc0de25725ea0 Mon Sep 17 00:00:00 2001
From: Wei Dai <wei.dai at intel.com>
Date: Mon, 23 Oct 2017 14:43:57 +0800
Subject: [PATCH] net/ixgbe: fix PF DCB info

[ upstream commit 9be9050134aaf09089f0cfb7723159eecc4a15e5 ]

When SRIOV is active, the function ixgbe_dev_get_dcb_info( )
should return the DCB traffic class info of its own queues,
not including any DCB info of the queues of any its VF.

When VMDQ is active, all queues are belonged to the PF,
the function ixgbe_dev_get_dcb_info can return DCB info
of all queues.

Fixes: 89d6728c7837 ("ethdev: get DCB information")

Signed-off-by: Wei Dai <wei.dai at intel.com>
Reviewed-by: Jingjing Wu <jingjing.wu at intel.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 30 ++++++++++++++++++++++--------
 1 file changed, 22 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index feff0a7..feb50c0 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -7182,6 +7182,8 @@ ixgbe_dev_get_dcb_info(struct rte_eth_dev *dev,
 	struct ixgbe_dcb_config *dcb_config =
 			IXGBE_DEV_PRIVATE_TO_DCB_CFG(dev->data->dev_private);
 	struct ixgbe_dcb_tc_config *tc;
+	struct rte_eth_dcb_tc_queue_mapping *tc_queue;
+	uint8_t nb_tcs;
 	uint8_t i, j;
 
 	if (dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_DCB_FLAG)
@@ -7189,19 +7191,31 @@ ixgbe_dev_get_dcb_info(struct rte_eth_dev *dev,
 	else
 		dcb_info->nb_tcs = 1;
 
+	tc_queue = &dcb_info->tc_queue;
+	nb_tcs = dcb_info->nb_tcs;
+
 	if (dcb_config->vt_mode) { /* vt is enabled*/
 		struct rte_eth_vmdq_dcb_conf *vmdq_rx_conf =
 				&dev->data->dev_conf.rx_adv_conf.vmdq_dcb_conf;
 		for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++)
 			dcb_info->prio_tc[i] = vmdq_rx_conf->dcb_tc[i];
-		for (i = 0; i < vmdq_rx_conf->nb_queue_pools; i++) {
-			for (j = 0; j < dcb_info->nb_tcs; j++) {
-				dcb_info->tc_queue.tc_rxq[i][j].base =
-						i * dcb_info->nb_tcs + j;
-				dcb_info->tc_queue.tc_rxq[i][j].nb_queue = 1;
-				dcb_info->tc_queue.tc_txq[i][j].base =
-						i * dcb_info->nb_tcs + j;
-				dcb_info->tc_queue.tc_txq[i][j].nb_queue = 1;
+		if (RTE_ETH_DEV_SRIOV(dev).active > 0) {
+			for (j = 0; j < nb_tcs; j++) {
+				tc_queue->tc_rxq[0][j].base = j;
+				tc_queue->tc_rxq[0][j].nb_queue = 1;
+				tc_queue->tc_txq[0][j].base = j;
+				tc_queue->tc_txq[0][j].nb_queue = 1;
+			}
+		} else {
+			for (i = 0; i < vmdq_rx_conf->nb_queue_pools; i++) {
+				for (j = 0; j < nb_tcs; j++) {
+					tc_queue->tc_rxq[i][j].base =
+						i * nb_tcs + j;
+					tc_queue->tc_rxq[i][j].nb_queue = 1;
+					tc_queue->tc_txq[i][j].base =
+						i * nb_tcs + j;
+					tc_queue->tc_txq[i][j].nb_queue = 1;
+				}
 			}
 		}
 	} else { /* vt is disabled*/
-- 
2.7.4