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hv_netvsc: Add comment of netvsc_xdp_xmit()

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Adding comment to avoid the misusing of netvsc_xdp_xmit().
Otherwise the value of skb->queue_mapping could be 0 and
then the return value of skb_get_rx_queue() could be MAX_U16
cause by overflow.

Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Link: https://lore.kernel.org/r/1634174786-1810351-1-git-send-email-jiasheng@iscas.ac.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jiasheng Jiang 2021-10-14 01:26:26 +00:00 committed by Jakub Kicinski
parent c47fedba94
commit 78e0a00691
1 changed files with 1 additions and 0 deletions
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drivers/net/hyperv/netvsc_drv.c
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@ -803,6 +803,7 @@ void netvsc_linkstatus_callback(struct net_device *net,
schedule_delayed_work(&ndev_ctx->dwork, 0);
}
/* This function should only be called after skb_record_rx_queue() */
static void netvsc_xdp_xmit(struct sk_buff *skb, struct net_device *ndev)
{
int rc;