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35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
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From cfda91fdd3396b97f2c08f0d8ed7749fbd87bb7b Mon Sep 17 00:00:00 2001
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From: Camelia Groza <camelia.groza@nxp.com>
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Date: Tue, 30 Oct 2018 17:34:31 +0200
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Subject: [PATCH] sdk_dpaa: ceetm: guard against an out of bounds queue index
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Make sure the queue mapping recorded in the skb is not larger than our
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egress queue count.
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Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
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---
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drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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--- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c
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+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c
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@@ -1982,7 +1982,7 @@ static struct ceetm_class *ceetm_classif
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int __hot ceetm_tx(struct sk_buff *skb, struct net_device *net_dev)
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{
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- const int queue_mapping = dpa_get_queue_mapping(skb);
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+ int queue_mapping = dpa_get_queue_mapping(skb);
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struct Qdisc *sch = net_dev->qdisc;
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struct ceetm_class_stats *cstats;
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struct ceetm_qdisc_stats *qstats;
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@@ -2016,6 +2016,9 @@ int __hot ceetm_tx(struct sk_buff *skb,
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goto drop;
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}
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+ if (unlikely(queue_mapping >= DPAA_ETH_TX_QUEUES))
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+ queue_mapping = queue_mapping % DPAA_ETH_TX_QUEUES;
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+
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priv_dpa = netdev_priv(net_dev);
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conf_fq = priv_dpa->conf_fqs[queue_mapping];
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