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35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
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From 56203e34ec05e39a088036b5d9db7fde7a7af742 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 18:18:30 +0200
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Subject: [PATCH] sdk_dpaa: 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_sg.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_sg.c
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+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
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@@ -1035,7 +1035,7 @@ EXPORT_SYMBOL(skb_to_sg_fd);
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int __hot dpa_tx(struct sk_buff *skb, struct net_device *net_dev)
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{
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struct dpa_priv_s *priv;
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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 qman_fq *egress_fq, *conf_fq;
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#ifdef CONFIG_FSL_DPAA_HOOKS
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@@ -1053,6 +1053,9 @@ int __hot dpa_tx(struct sk_buff *skb, st
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return ceetm_tx(skb, net_dev);
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#endif
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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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egress_fq = priv->egress_fqs[queue_mapping];
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conf_fq = priv->conf_fqs[queue_mapping];
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