lkml.org 
[lkml]   [2017]   [Sep]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH net-next 10/10] net: hns3: Add mqprio support when interacting with network stack
Date
When using tc qdisc to configure DCB parameter, dcb_ops->setup_tc
is used to tell hclge_dcb module to do the setup.
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>
---
.../net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c | 135 +++++++++++++++++----
1 file changed, 111 insertions(+), 24 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c
index 11dab26..31fcda4 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c
@@ -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 @@ static int hns3_nic_net_up(struct net_device *netdev)

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);
- 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);
+ ret = hns3_nic_set_real_num_queue(netdev);
+ if (ret)
return ret;
- }

ret = hns3_nic_net_up(netdev);
if (ret) {
@@ -1193,32 +1206,40 @@ static void hns3_nic_udp_tunnel_del(struct net_device *netdev,
}
}

-static int hns3_setup_tc(struct net_device *netdev, u8 tc)
+static int hns3_setup_tc(struct net_device *netdev, u8 tc, u8 *prio_tc)
{
struct hns3_nic_priv *priv = netdev_priv(netdev);
struct hnae3_handle *h = priv->ae_handle;
struct hnae3_knic_private_info *kinfo = &h->kinfo;
+ bool if_running = netif_running(netdev);
unsigned int i;
int ret;

if (tc > HNAE3_MAX_TC)
return -EINVAL;

- if (kinfo->num_tc == tc)
- return 0;
-
if (!netdev)
return -EINVAL;

- if (!tc) {
+ if (if_running) {
+ (void)hns3_nic_net_stop(netdev);
+ msleep(100);
+ }
+
+ ret = (kinfo->dcb_ops && kinfo->dcb_ops->setup_tc) ?
+ kinfo->dcb_ops->setup_tc(h, tc, prio_tc) : -EOPNOTSUPP;
+ if (ret)
+ goto err_out;
+
+ if (tc <= 1) {
netdev_reset_tc(netdev);
- return 0;
+ goto out;
}

/* Set num_tc for netdev */
ret = netdev_set_num_tc(netdev, tc);
if (ret)
- return ret;
+ goto err_out;

/* Set per TC queues for the VSI */
for (i = 0; i < HNAE3_MAX_TC; i++) {
@@ -1229,7 +1250,14 @@ static int hns3_setup_tc(struct net_device *netdev, u8 tc)
kinfo->tc_info[i].tqp_offset);
}

- return 0;
+out:
+ ret = hns3_nic_set_real_num_queue(netdev);
+
+err_out:
+ if (if_running)
+ (void)hns3_nic_net_open(netdev);
+
+ return ret;
}

static int hns3_nic_setup_tc(struct net_device *dev, enum tc_setup_type type,
@@ -1240,7 +1268,7 @@ static int hns3_nic_setup_tc(struct net_device *dev, enum tc_setup_type type,
if (type != TC_SETUP_MQPRIO)
return -EOPNOTSUPP;

- return hns3_setup_tc(dev, mqprio->num_tc);
+ return hns3_setup_tc(dev, mqprio->num_tc, mqprio->prio_tc_map);
}

static int hns3_vlan_rx_add_vid(struct net_device *netdev,
@@ -2848,10 +2876,69 @@ 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
--
1.9.1
\
 
 \ /
  Last update: 2017-09-21 19:30    [W:0.089 / U:5.540 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site