[dpdk-dev] [PATCH v5 2/3] ethdev: check if queue setup in queue-related APIs

["Wei Hu (Xavier)" <huwei013@chinasoftinc.com>]

From: "Wei Hu (Xavier)" <xavier.huwei@huawei.com>

This patch adds checking whether the related Tx or Rx queue has been setup
in the queue-related API functions to avoid illegal address access.

Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
---
 lib/librte_ethdev/rte_ethdev.c | 16 ++++++++++++++++
 lib/librte_ethdev/rte_ethdev.h |  3 ++-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 11e54d9..4acf858 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -890,6 +890,14 @@ eth_dev_validate_rx_queue(const struct rte_eth_dev *dev, uint16_t rx_queue_id)
 		return -EINVAL;
 	}
 
+	if (dev->data->rx_queues[rx_queue_id] == NULL) {
+		port_id = dev->data->port_id;
+		RTE_ETHDEV_LOG(ERR,
+			       "Queue %u of device with port_id=%u has not been setup\n",
+			       rx_queue_id, port_id);
+		return -EINVAL;
+	}
+
 	return 0;
 }
 
@@ -906,6 +914,14 @@ eth_dev_validate_tx_queue(const struct rte_eth_dev *dev, uint16_t tx_queue_id)
 		return -EINVAL;
 	}
 
+	if (dev->data->tx_queues[tx_queue_id] == NULL) {
+		port_id = dev->data->port_id;
+		RTE_ETHDEV_LOG(ERR,
+			       "Queue %u of device with port_id=%u has not been setup\n",
+			       tx_queue_id, port_id);
+		return -EINVAL;
+	}
+
 	return 0;
 }
 
diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index 5bcfbb8..f4cc591 100644
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -4721,7 +4721,8 @@ rte_eth_rx_queue_count(uint16_t port_id, uint16_t queue_id)
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
 	dev = &rte_eth_devices[port_id];
 	RTE_FUNC_PTR_OR_ERR_RET(*dev->rx_queue_count, -ENOTSUP);
-	if (queue_id >= dev->data->nb_rx_queues)
+	if (queue_id >= dev->data->nb_rx_queues ||
+	    dev->data->rx_queues[queue_id] == NULL)
 		return -EINVAL;
 
 	return (int)(*dev->rx_queue_count)(dev, queue_id);
-- 
2.9.5