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From 56203e34ec05e39a088036b5d9db7fde7a7af742 Mon Sep 17 00:00:00 2001
From: Camelia Groza <camelia.groza@nxp.com>
Date: Tue, 30 Oct 2018 18:18:30 +0200
Subject: [PATCH] sdk_dpaa: guard against an out of bounds queue index
Make sure the queue mapping recorded in the skb is not larger than our
egress queue count.
Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
---
drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
@@ -1035,7 +1035,7 @@ EXPORT_SYMBOL(skb_to_sg_fd);
int __hot dpa_tx(struct sk_buff *skb, struct net_device *net_dev)
{
struct dpa_priv_s *priv;
- const int queue_mapping = dpa_get_queue_mapping(skb);
+ int queue_mapping = dpa_get_queue_mapping(skb);
struct qman_fq *egress_fq, *conf_fq;
#ifdef CONFIG_FSL_DPAA_HOOKS
@@ -1053,6 +1053,9 @@ int __hot dpa_tx(struct sk_buff *skb, st
return ceetm_tx(skb, net_dev);
#endif
+ if (unlikely(queue_mapping >= DPAA_ETH_TX_QUEUES))
+ queue_mapping = queue_mapping % DPAA_ETH_TX_QUEUES;
+
egress_fq = priv->egress_fqs[queue_mapping];
conf_fq = priv->conf_fqs[queue_mapping];
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