Commit 5eb01ddf authored Mar 12, 2020 by Yonglong Liu Committed by David S. Miller Mar 12, 2020

net: hns3: fix "tc qdisc del" failed issue



The HNS3 driver supports to configure TC numbers and TC to priority
map via "tc" tool. But when delete the rule, will fail, because
the HNS3 driver needs at least one TC, but the "tc" tool sets TC
number to zero when delete.

This patch makes sure that the TC number is at least one.

Fixes: 30d240df ("net: hns3: Add mqprio hardware offload support in hns3 driver")
Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent b09fe70e

drivers/net/ethernet/hisilicon/hns3/hns3_enet.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1711,7 +1711,7 @@ static int hns3_setup_tc(struct net_device netdev, void type_data)
		netif_dbg(h, drv, netdev, "setup tc: num_tc=%u\n", tc);

		return (kinfo->dcb_ops && kinfo->dcb_ops->setup_tc) ?
		kinfo->dcb_ops->setup_tc(h, tc, prio_tc) : -EOPNOTSUPP;
		kinfo->dcb_ops->setup_tc(h, tc ? tc : 1, prio_tc) : -EOPNOTSUPP;
		}

		static int hns3_nic_setup_tc(struct net_device *dev, enum tc_setup_type type,

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