[dpdk-dev] [PATCH v2] librte_pmd_ixgbe: Add queue start failure check

[Michael Qiu <michael.qiu@intel.com>]

For ixgbe, when queue start failure, for example, mbuf allocate
failure, the device will still start success, which could be
an issue.

Add return status check of queue start to avoid this issue.

Signed-off-by: Michael Qiu <michael.qiu@intel.com>
---
v2 --> v1
	. remove duplicated error message in ixgbe_dev_rxtx_start()
	. remove '\n' in PMD_INIT_LOG()

 lib/librte_pmd_ixgbe/ixgbe_ethdev.c |  6 +++++-
 lib/librte_pmd_ixgbe/ixgbe_ethdev.h |  2 +-
 lib/librte_pmd_ixgbe/ixgbe_rxtx.c   | 20 +++++++++++++++-----
 3 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
index b58ec45..ede8706 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
@@ -1495,7 +1495,11 @@ ixgbe_dev_start(struct rte_eth_dev *dev)
 		goto error;
 	}
 
-	ixgbe_dev_rxtx_start(dev);
+	err = ixgbe_dev_rxtx_start(dev);
+	if (err < 0) {
+		PMD_INIT_LOG(ERR, "Unable to start rxtx queues");
+		goto error;
+	}
 
 	if (ixgbe_is_sfp(hw) && hw->phy.multispeed_fiber) {
 		err = hw->mac.ops.setup_sfp(hw);
diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.h b/lib/librte_pmd_ixgbe/ixgbe_ethdev.h
index 677c257..1383194 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.h
+++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.h
@@ -265,7 +265,7 @@ int ixgbe_dev_rx_init(struct rte_eth_dev *dev);
 
 void ixgbe_dev_tx_init(struct rte_eth_dev *dev);
 
-void ixgbe_dev_rxtx_start(struct rte_eth_dev *dev);
+int ixgbe_dev_rxtx_start(struct rte_eth_dev *dev);
 
 int ixgbe_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id);
 
diff --git a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
index 840bc07..0224ed0 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
@@ -3806,7 +3806,7 @@ ixgbe_setup_loopback_link_82599(struct ixgbe_hw *hw)
 /*
  * Start Transmit and Receive Units.
  */
-void
+int
 ixgbe_dev_rxtx_start(struct rte_eth_dev *dev)
 {
 	struct ixgbe_hw     *hw;
@@ -3816,6 +3816,7 @@ ixgbe_dev_rxtx_start(struct rte_eth_dev *dev)
 	uint32_t dmatxctl;
 	uint32_t rxctrl;
 	uint16_t i;
+	int ret = 0;
 
 	PMD_INIT_FUNC_TRACE();
 	hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
@@ -3838,14 +3839,22 @@ ixgbe_dev_rxtx_start(struct rte_eth_dev *dev)
 
 	for (i = 0; i < dev->data->nb_tx_queues; i++) {
 		txq = dev->data->tx_queues[i];
-		if (!txq->tx_deferred_start)
-			ixgbe_dev_tx_queue_start(dev, i);
+		if (!txq->tx_deferred_start) {
+			ret = ixgbe_dev_tx_queue_start(dev, i);
+			if (ret < 0) {
+				return ret;
+			}
+		}
 	}
 
 	for (i = 0; i < dev->data->nb_rx_queues; i++) {
 		rxq = dev->data->rx_queues[i];
-		if (!rxq->rx_deferred_start)
-			ixgbe_dev_rx_queue_start(dev, i);
+		if (!rxq->rx_deferred_start) {
+			ret = ixgbe_dev_rx_queue_start(dev, i);
+			if (ret < 0) {
+				return ret;
+			}
+		}
 	}
 
 	/* Enable Receive engine */
@@ -3860,6 +3869,7 @@ ixgbe_dev_rxtx_start(struct rte_eth_dev *dev)
 			dev->data->dev_conf.lpbk_mode == IXGBE_LPBK_82599_TX_RX)
 		ixgbe_setup_loopback_link_82599(hw);
 
+	return 0;
 }
 
 /*
-- 
1.9.3