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net: hns3: Add DCB support when interacting with network stack 

When using lldptool to configure DCB parameter, hclge_dcb module
call the client_ops->setup_tc to tell network stack which queue
and priority is using for specific tc.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yunsheng Lin 2017-09-27 09:45:32 +08:00 committed by David S. Miller
parent 7979a22330
commit 9df8f79a4d
1 changed files with 87 additions and 15 deletions
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102
drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c
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@ -196,6 +196,32 @@ static void hns3_vector_gl_rl_init(struct hns3_enet_tqp_vector *tqp_vector)
tqp_vector->tx_group.flow_level = HNS3_FLOW_LOW;
}
static int hns3_nic_set_real_num_queue(struct net_device *netdev)
{
struct hns3_nic_priv *priv = netdev_priv(netdev);
struct hnae3_handle *h = priv->ae_handle;
struct hnae3_knic_private_info *kinfo = &h->kinfo;
unsigned int queue_size = kinfo->rss_size * kinfo->num_tc;
int ret;
ret = netif_set_real_num_tx_queues(netdev, queue_size);
if (ret) {
netdev_err(netdev,
"netif_set_real_num_tx_queues fail, ret=%d!\n",
ret);
return ret;
}
ret = netif_set_real_num_rx_queues(netdev, queue_size);
if (ret) {
netdev_err(netdev,
"netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
return ret;
}
return 0;
}
static int hns3_nic_net_up(struct net_device *netdev)
{
struct hns3_nic_priv *priv = netdev_priv(netdev);
@ -232,26 +258,13 @@ out_start_err:
static int hns3_nic_net_open(struct net_device *netdev)
{
struct hns3_nic_priv *priv = netdev_priv(netdev);
struct hnae3_handle *h = priv->ae_handle;
int ret;
netif_carrier_off(netdev);
ret = netif_set_real_num_tx_queues(netdev, h->kinfo.num_tqps);
if (ret) {
netdev_err(netdev,
"netif_set_real_num_tx_queues fail, ret=%d!\n",
ret);
ret = hns3_nic_set_real_num_queue(netdev);
if (ret)
return ret;
}
ret = netif_set_real_num_rx_queues(netdev, h->kinfo.num_tqps);
if (ret) {
netdev_err(netdev,
"netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
return ret;
}
ret = hns3_nic_net_up(netdev);
if (ret) {
@ -2848,10 +2861,69 @@ static void hns3_link_status_change(struct hnae3_handle *handle, bool linkup)
}
}
static int hns3_client_setup_tc(struct hnae3_handle *handle, u8 tc)
{
struct hnae3_knic_private_info *kinfo = &handle->kinfo;
struct net_device *ndev = kinfo->netdev;
bool if_running = netif_running(ndev);
int ret;
u8 i;
if (tc > HNAE3_MAX_TC)
return -EINVAL;
if (!ndev)
return -ENODEV;
ret = netdev_set_num_tc(ndev, tc);
if (ret)
return ret;
if (if_running) {
(void)hns3_nic_net_stop(ndev);
msleep(100);
}
ret = (kinfo->dcb_ops && kinfo->dcb_ops->map_update) ?
kinfo->dcb_ops->map_update(handle) : -EOPNOTSUPP;
if (ret)
goto err_out;
if (tc <= 1) {
netdev_reset_tc(ndev);
goto out;
}
for (i = 0; i < HNAE3_MAX_TC; i++) {
struct hnae3_tc_info *tc_info = &kinfo->tc_info[i];
if (tc_info->enable)
netdev_set_tc_queue(ndev,
tc_info->tc,
tc_info->tqp_count,
tc_info->tqp_offset);
}
for (i = 0; i < HNAE3_MAX_USER_PRIO; i++) {
netdev_set_prio_tc_map(ndev, i,
kinfo->prio_tc[i]);
}
out:
ret = hns3_nic_set_real_num_queue(ndev);
err_out:
if (if_running)
(void)hns3_nic_net_open(ndev);
return ret;
}
const struct hnae3_client_ops client_ops = {
.init_instance = hns3_client_init,
.uninit_instance = hns3_client_uninit,
.link_status_change = hns3_link_status_change,
.setup_tc = hns3_client_setup_tc,
};
/* hns3_init_module - Driver registration routine