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* [dpdk-dev] [PATCH] enic: prevent segfaults when allocating too many TX or RX queues
@ 2016-03-17 22:49 John Daley
  2016-03-22 16:46 ` Bruce Richardson
  0 siblings, 1 reply; 3+ messages in thread
From: John Daley @ 2016-03-17 22:49 UTC (permalink / raw)
  To: dev; +Cc: Nelson Escobar

From: Nelson Escobar <neescoba@cisco.com>

Add checks to make sure we don't try to allocate more tx or rx queues
than we support.

Signed-off-by: Nelson Escobar <neescoba@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
---
 drivers/net/enic/enic_ethdev.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/net/enic/enic_ethdev.c b/drivers/net/enic/enic_ethdev.c
index 6f2ada5..6c3c734 100644
--- a/drivers/net/enic/enic_ethdev.c
+++ b/drivers/net/enic/enic_ethdev.c
@@ -174,6 +174,13 @@ static int enicpmd_dev_tx_queue_setup(struct rte_eth_dev *eth_dev,
 	struct enic *enic = pmd_priv(eth_dev);
 
 	ENICPMD_FUNC_TRACE();
+	if (queue_idx >= ENIC_WQ_MAX) {
+		dev_err(enic,
+			"Max number of TX queues exceeded.  Max is %d\n",
+			ENIC_WQ_MAX);
+		return -EINVAL;
+	}
+
 	eth_dev->data->tx_queues[queue_idx] = (void *)&enic->wq[queue_idx];
 
 	ret = enic_alloc_wq(enic, queue_idx, socket_id, nb_desc);
@@ -262,6 +269,13 @@ static int enicpmd_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
 	struct enic *enic = pmd_priv(eth_dev);
 
 	ENICPMD_FUNC_TRACE();
+	if (queue_idx >= ENIC_RQ_MAX) {
+		dev_err(enic,
+			"Max number of RX queues exceeded.  Max is %d\n",
+			ENIC_RQ_MAX);
+		return -EINVAL;
+	}
+
 	eth_dev->data->rx_queues[queue_idx] = (void *)&enic->rq[queue_idx];
 
 	ret = enic_alloc_rq(enic, queue_idx, socket_id, mp, nb_desc);
-- 
2.7.0

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2016-03-22 16:48 UTC | newest]

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2016-03-17 22:49 [dpdk-dev] [PATCH] enic: prevent segfaults when allocating too many TX or RX queues John Daley
2016-03-22 16:46 ` Bruce Richardson
2016-03-22 16:47   ` Bruce Richardson

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