From 875b4899c6e4eb50fe7e8f04c0191198e3b14fe6 Mon Sep 17 00:00:00 2001 From: Rich Lane Date: Tue, 2 Aug 2016 12:34:56 -0700 Subject: [PATCH] net/i40e: fix null pointer dereferences when using VMDq+RSS When using VMDQ+RSS, the queue ids used by the application are not contiguous (see i40e_pf_config_rss). Most of the driver already handled this, but there were a few cases where it assumed all configured queues had been setup. Fixes: 4861cde46116 ("i40e: new poll mode driver") Fixes: 6b4537128394 ("i40e: free queue memory when closing") Fixes: 8e109464c022 ("i40e: allow vector Rx and Tx usage") Signed-off-by: Rich Lane Acked-by: Jingjing Wu --- drivers/net/i40e/i40e_rxtx.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c index 554d167937..0556a4d40b 100644 --- a/drivers/net/i40e/i40e_rxtx.c +++ b/drivers/net/i40e/i40e_rxtx.c @@ -2948,11 +2948,15 @@ i40e_dev_clear_queues(struct rte_eth_dev *dev) PMD_INIT_FUNC_TRACE(); for (i = 0; i < dev->data->nb_tx_queues; i++) { + if (!dev->data->tx_queues[i]) + continue; i40e_tx_queue_release_mbufs(dev->data->tx_queues[i]); i40e_reset_tx_queue(dev->data->tx_queues[i]); } for (i = 0; i < dev->data->nb_rx_queues; i++) { + if (!dev->data->rx_queues[i]) + continue; i40e_rx_queue_release_mbufs(dev->data->rx_queues[i]); i40e_reset_rx_queue(dev->data->rx_queues[i]); } @@ -2966,12 +2970,16 @@ i40e_dev_free_queues(struct rte_eth_dev *dev) PMD_INIT_FUNC_TRACE(); for (i = 0; i < dev->data->nb_rx_queues; i++) { + if (!dev->data->rx_queues[i]) + continue; i40e_dev_rx_queue_release(dev->data->rx_queues[i]); dev->data->rx_queues[i] = NULL; } dev->data->nb_rx_queues = 0; for (i = 0; i < dev->data->nb_tx_queues; i++) { + if (!dev->data->tx_queues[i]) + continue; i40e_dev_tx_queue_release(dev->data->tx_queues[i]); dev->data->tx_queues[i] = NULL; } @@ -3154,7 +3162,7 @@ i40e_set_rx_function(struct rte_eth_dev *dev) struct i40e_rx_queue *rxq = dev->data->rx_queues[i]; - if (i40e_rxq_vec_setup(rxq)) { + if (rxq && i40e_rxq_vec_setup(rxq)) { ad->rx_vec_allowed = false; break; } @@ -3216,7 +3224,8 @@ i40e_set_rx_function(struct rte_eth_dev *dev) for (i = 0; i < dev->data->nb_rx_queues; i++) { struct i40e_rx_queue *rxq = dev->data->rx_queues[i]; - rxq->rx_using_sse = rx_using_sse; + if (rxq) + rxq->rx_using_sse = rx_using_sse; } } } @@ -3255,7 +3264,7 @@ i40e_set_tx_function(struct rte_eth_dev *dev) struct i40e_tx_queue *txq = dev->data->tx_queues[i]; - if (i40e_txq_vec_setup(txq)) { + if (txq && i40e_txq_vec_setup(txq)) { ad->tx_vec_allowed = false; break; } -- 2.20.1