Commit f6e32724 authored by Guangbin Huang's avatar Guangbin Huang Committed by David S. Miller
Browse files

net: hns3: support ndo_select_queue() 



To support tx packets to select queue according to its dscp field after
setting dscp and tc map relationship, this patch implements
ndo_select_queue() to set skb->priority according to the user's setting
dscp and priority map relationship.

Signed-off-by: default avatarGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0ba22bcb

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

+46 −0
Original line number Diff line number Diff line
@@ -2963,6 +2963,51 @@ static int hns3_nic_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac) 
	return h->ae_algo->ops->set_vf_mac(h, vf_id, mac);

}



#define HNS3_INVALID_DSCP		0xff

#define HNS3_DSCP_SHIFT			2



static u8 hns3_get_skb_dscp(struct sk_buff *skb)

{

	__be16 protocol = skb->protocol;

	u8 dscp = HNS3_INVALID_DSCP;



	if (protocol == htons(ETH_P_8021Q))

		protocol = vlan_get_protocol(skb);



	if (protocol == htons(ETH_P_IP))

		dscp = ipv4_get_dsfield(ip_hdr(skb)) >> HNS3_DSCP_SHIFT;

	else if (protocol == htons(ETH_P_IPV6))

		dscp = ipv6_get_dsfield(ipv6_hdr(skb)) >> HNS3_DSCP_SHIFT;



	return dscp;

}



static u16 hns3_nic_select_queue(struct net_device *netdev,

				 struct sk_buff *skb,

				 struct net_device *sb_dev)

{

	struct hnae3_handle *h = hns3_get_handle(netdev);

	u8 dscp, priority;

	int ret;



	if (h->kinfo.tc_map_mode != HNAE3_TC_MAP_MODE_DSCP ||

	    !h->ae_algo->ops->get_dscp_prio)

		goto out;



	dscp = hns3_get_skb_dscp(skb);

	if (unlikely(dscp == HNS3_INVALID_DSCP))

		goto out;



	ret = h->ae_algo->ops->get_dscp_prio(h, dscp, NULL, &priority);

	if (ret)

		goto out;



	skb->priority = priority;



out:

	return netdev_pick_tx(netdev, skb, sb_dev);

}



static const struct net_device_ops hns3_nic_netdev_ops = {

	.ndo_open		= hns3_nic_net_open,

	.ndo_stop		= hns3_nic_net_stop,
@@ -2988,6 +3033,7 @@ static const struct net_device_ops hns3_nic_netdev_ops = { 
	.ndo_set_vf_link_state	= hns3_nic_set_vf_link_state,

	.ndo_set_vf_rate	= hns3_nic_set_vf_rate,

	.ndo_set_vf_mac		= hns3_nic_set_vf_mac,

	.ndo_select_queue	= hns3_nic_select_queue,

};



bool hns3_is_phys_func(struct pci_dev *pdev)