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enic: fix crash when allocating too many queues

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

Fixes: fefed3d1e62c ("enic: new driver")

Signed-off-by: Nelson Escobar <neescoba@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
This commit is contained in:
Nelson Escobar 2016-03-17 15:49:58 -07:00 committed by Thomas Monjalon
parent bba57df386
commit ddf2da3ece
1 changed files with 14 additions and 0 deletions
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14
drivers/net/enic/enic_ethdev.c
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@ -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);