From e937fb5c6feb8f8b23ada527d20abb8118bc19b3 Mon Sep 17 00:00:00 2001 From: Yong Wang Date: Mon, 29 Aug 2016 12:18:45 -0700 Subject: [PATCH] net/vmxnet3: improve error checks and return values Signed-off-by: Yong Wang Reviewed-by: Juho Snellman Acked-by: Stephen Hemminger --- drivers/net/vmxnet3/vmxnet3_ethdev.c | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-) diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.c b/drivers/net/vmxnet3/vmxnet3_ethdev.c index fa497596cf..18f0ddaaba 100644 --- a/drivers/net/vmxnet3/vmxnet3_ethdev.c +++ b/drivers/net/vmxnet3/vmxnet3_ethdev.c @@ -348,9 +348,16 @@ vmxnet3_dev_configure(struct rte_eth_dev *dev) PMD_INIT_FUNC_TRACE(); - if (dev->data->nb_rx_queues > UINT8_MAX || - dev->data->nb_tx_queues > UINT8_MAX) + if (dev->data->nb_tx_queues > VMXNET3_MAX_TX_QUEUES || + dev->data->nb_rx_queues > VMXNET3_MAX_RX_QUEUES) { + PMD_INIT_LOG(ERR, "ERROR: Number of queues not supported"); return -EINVAL; + } + + if (!rte_is_power_of_2(dev->data->nb_rx_queues)) { + PMD_INIT_LOG(ERR, "ERROR: Number of rx queues not power of 2"); + return -EINVAL; + } size = dev->data->nb_rx_queues * sizeof(struct Vmxnet3_TxQueueDesc) + dev->data->nb_tx_queues * sizeof(struct Vmxnet3_RxQueueDesc); @@ -538,7 +545,7 @@ vmxnet3_setup_driver_shared(struct rte_eth_dev *dev) static int vmxnet3_dev_start(struct rte_eth_dev *dev) { - int status, ret; + int ret; struct vmxnet3_hw *hw = dev->data->dev_private; PMD_INIT_FUNC_TRACE(); @@ -555,11 +562,11 @@ vmxnet3_dev_start(struct rte_eth_dev *dev) /* Activate device by register write */ VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_ACTIVATE_DEV); - status = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD); + ret = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD); - if (status != 0) { + if (ret != 0) { PMD_INIT_LOG(ERR, "Device activation: UNSUCCESSFUL"); - return -1; + return -EINVAL; } /* Disable interrupts */ @@ -571,7 +578,7 @@ vmxnet3_dev_start(struct rte_eth_dev *dev) */ ret = vmxnet3_dev_rxtx_init(dev); if (ret != VMXNET3_SUCCESS) { - PMD_INIT_LOG(ERR, "Device receive init: UNSUCCESSFUL"); + PMD_INIT_LOG(ERR, "Device queue init: UNSUCCESSFUL"); return ret; } @@ -586,7 +593,7 @@ vmxnet3_dev_start(struct rte_eth_dev *dev) PMD_INIT_LOG(DEBUG, "Reading events: 0x%X", events); vmxnet3_process_events(hw); #endif - return status; + return VMXNET3_SUCCESS; } /* -- 2.20.1