[dpdk-stable] patch 'net/ixgbe: fix all queues drop setting of DCB' has been queued to LTS release 16.11.2

[Yuanhan Liu <yuanhan.liu@linux.intel.com>]

Hi,

FYI, your patch has been queued to LTS release 16.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable
yet. It will be pushed if I get no objections before 04/11/17.
So please shout if anyone has objections.

Thanks.

	--yliu

---
>From b47f583b688c561dc0701d208a58dfdb5f492539 Mon Sep 17 00:00:00 2001
From: Wenzhuo Lu <wenzhuo.lu@intel.com>
Date: Mon, 27 Feb 2017 13:34:04 +0800
Subject: [PATCH] net/ixgbe: fix all queues drop setting of DCB

[ upstream commit 8552304c86f97e0d9ccb1884d06479a86f92f816 ]

DCB is split to RX and TX mode. All-queues-drop is set for TX mode.
It's not appropriate because all-queue-drop is a RX feature.
Move this setting from TX to RX.

Fixes: f3f9b17bb8a5 ("net/ixgbe: support multiqueue mode VMDq DCB with SRIOV")

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
---
 drivers/net/ixgbe/ixgbe_rxtx.c | 38 +++++++++++++++++++++-----------------
 1 file changed, 21 insertions(+), 17 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index c61ce47..675066e 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -3323,7 +3323,6 @@ ixgbe_dcb_tx_hw_config(struct rte_eth_dev *dev,
 		       struct ixgbe_dcb_config *dcb_config)
 {
 	uint32_t reg;
-	uint32_t q;
 	struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 
 	PMD_INIT_FUNC_TRACE();
@@ -3343,18 +3342,6 @@ ixgbe_dcb_tx_hw_config(struct rte_eth_dev *dev,
 			reg |= IXGBE_MTQC_VT_ENA;
 		IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg);
 
-		if (RTE_ETH_DEV_SRIOV(dev).active == 0) {
-			/* Disable drop for all queues in VMDQ mode*/
-			for (q = 0; q < 128; q++)
-				IXGBE_WRITE_REG(hw, IXGBE_QDE,
-						(IXGBE_QDE_WRITE | (q << IXGBE_QDE_IDX_SHIFT)));
-		} else {
-			/* Enable drop for all queues in SRIOV mode */
-			for (q = 0; q < 128; q++)
-				IXGBE_WRITE_REG(hw, IXGBE_QDE,
-						(IXGBE_QDE_WRITE | (q << IXGBE_QDE_IDX_SHIFT) | IXGBE_QDE_ENABLE));
-		}
-
 		/* Enable the Tx desc arbiter */
 		reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
 		reg &= ~IXGBE_RTTDCS_ARBDIS;
@@ -3488,16 +3475,18 @@ ixgbe_dcb_tx_config(struct rte_eth_dev *dev,
 
 /**
  * ixgbe_dcb_rx_hw_config - Configure general DCB RX HW parameters
- * @hw: pointer to hardware structure
+ * @dev: pointer to eth_dev structure
  * @dcb_config: pointer to ixgbe_dcb_config structure
  */
 static void
-ixgbe_dcb_rx_hw_config(struct ixgbe_hw *hw,
-	       struct ixgbe_dcb_config *dcb_config)
+ixgbe_dcb_rx_hw_config(struct rte_eth_dev *dev,
+		       struct ixgbe_dcb_config *dcb_config)
 {
 	uint32_t reg;
 	uint32_t vlanctrl;
 	uint8_t i;
+	uint32_t q;
+	struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 
 	PMD_INIT_FUNC_TRACE();
 	/*
@@ -3535,6 +3524,21 @@ ixgbe_dcb_rx_hw_config(struct ixgbe_hw *hw,
 		}
 
 		IXGBE_WRITE_REG(hw, IXGBE_MRQC, reg);
+
+		if (RTE_ETH_DEV_SRIOV(dev).active == 0) {
+			/* Disable drop for all queues in VMDQ mode*/
+			for (q = 0; q < IXGBE_MAX_RX_QUEUE_NUM; q++)
+				IXGBE_WRITE_REG(hw, IXGBE_QDE,
+						(IXGBE_QDE_WRITE |
+						 (q << IXGBE_QDE_IDX_SHIFT)));
+		} else {
+			/* Enable drop for all queues in SRIOV mode */
+			for (q = 0; q < IXGBE_MAX_RX_QUEUE_NUM; q++)
+				IXGBE_WRITE_REG(hw, IXGBE_QDE,
+						(IXGBE_QDE_WRITE |
+						 (q << IXGBE_QDE_IDX_SHIFT) |
+						 IXGBE_QDE_ENABLE));
+		}
 	}
 
 	/* VLNCTRL: enable vlan filtering and allow all vlan tags through */
@@ -3647,7 +3651,7 @@ ixgbe_dcb_hw_configure(struct rte_eth_dev *dev,
 		/* Get dcb TX configuration parameters from rte_eth_conf */
 		ixgbe_dcb_rx_config(dev, dcb_config);
 		/*Configure general DCB RX parameters*/
-		ixgbe_dcb_rx_hw_config(hw, dcb_config);
+		ixgbe_dcb_rx_hw_config(dev, dcb_config);
 		break;
 	default:
 		PMD_INIT_LOG(ERR, "Incorrect DCB RX mode configuration");
-- 
1.9.0