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.
Fixes: 351e158 ("hv_netvsc: Add XDP support")
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
---
drivers/net/hyperv/netvsc_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index f682a55..ac9529c 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -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;
--
2.7.4
