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net: hns3: support ndo_select_queue()

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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: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guangbin Huang 2022-09-06 17:12:20 +08:00 committed by David S. Miller
parent 0ba22bcb22
commit f6e32724ca
1 changed files with 46 additions and 0 deletions
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46
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
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@ -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)