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Date: Tue, 6 Jul 2021 14:41:32 +0800
From: Guangbin Huang <huangguangbin2@...wei.com>
To: <davem@...emloft.net>, <kuba@...nel.org>, <jiri@...dia.com>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<lipeng321@...wei.com>, <chenhao288@...ilicon.com>,
<huangguangbin2@...wei.com>
Subject: [RFC PATCH net-next 8/8] net: hns3: add support for VF setting rx/tx buffer size by devlink param
From: Hao Chen <chenhao288@...ilicon.com>
Add support for VF setting rx/tx buffer size by devlink param
Signed-off-by: Hao Chen <chenhao288@...ilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@...wei.com>
---
.../hisilicon/hns3/hns3vf/hclgevf_devlink.c | 89 +++++++++++++++++++++-
.../hisilicon/hns3/hns3vf/hclgevf_devlink.h | 7 ++
.../ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 3 +
3 files changed, 98 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c
index 53b0b8931325..2092ef1a337e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c
@@ -32,6 +32,37 @@ static int hclgevf_devlink_info_get(struct devlink *devlink,
return devlink_info_version_running_put(req, "fw-version", version_str);
}
+static void hclgevf_devlink_get_param_setting(struct devlink *devlink)
+{
+ struct hclgevf_devlink_priv *priv = devlink_priv(devlink);
+ struct hclgevf_dev *hdev = priv->hdev;
+ struct pci_dev *pdev = hdev->pdev;
+ union devlink_param_value val;
+ int i, ret;
+
+ ret = devlink_param_driverinit_value_get(devlink,
+ HCLGEVF_DEVLINK_PARAM_ID_RX_BUF_LEN,
+ &val);
+ if (!ret) {
+ hdev->rx_buf_len = val.vu32;
+ hdev->nic.kinfo.rx_buf_len = hdev->rx_buf_len;
+ for (i = 0; i < hdev->num_tqps; i++)
+ hdev->htqp[i].q.buf_size = hdev->rx_buf_len;
+ } else {
+ dev_err(&pdev->dev,
+ "failed to get rx buffer size, ret = %d\n", ret);
+ }
+
+ ret = devlink_param_driverinit_value_get(devlink,
+ HCLGEVF_DEVLINK_PARAM_ID_TX_BUF_SIZE,
+ &val);
+ if (!ret)
+ hdev->nic.kinfo.devlink_tx_spare_buf_size = val.vu32;
+ else
+ dev_err(&pdev->dev,
+ "failed to get tx buffer size, ret = %d\n", ret);
+}
+
static int hclgevf_devlink_reload_down(struct devlink *devlink,
bool netns_change,
enum devlink_reload_action action,
@@ -81,6 +112,7 @@ static int hclgevf_devlink_reload_up(struct devlink *devlink,
*actions_performed = BIT(action);
switch (action) {
case DEVLINK_RELOAD_ACTION_DRIVER_REINIT:
+ hclgevf_devlink_get_param_setting(devlink);
rtnl_lock();
ret = hdev->nic_client->ops->reset_notify(h, HNAE3_INIT_CLIENT);
if (ret) {
@@ -103,6 +135,49 @@ static const struct devlink_ops hclgevf_devlink_ops = {
.reload_up = hclgevf_devlink_reload_up,
};
+static int
+hclgevf_devlink_rx_buffer_size_validate(struct devlink *devlink, u32 id,
+ union devlink_param_value val,
+ struct netlink_ext_ack *extack)
+{
+#define HCLGEVF_RX_BUF_LEN_2K 2048
+#define HCLGEVF_RX_BUF_LEN_4K 4096
+
+ if (val.vu32 != HCLGEVF_RX_BUF_LEN_2K &&
+ val.vu32 != HCLGEVF_RX_BUF_LEN_4K) {
+ NL_SET_ERR_MSG_MOD(extack, "Supported size is 2048 or 4096");
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static const struct devlink_param hclgevf_devlink_params[] = {
+ DEVLINK_PARAM_DRIVER(HCLGEVF_DEVLINK_PARAM_ID_RX_BUF_LEN,
+ "rx_buffer_len", DEVLINK_PARAM_TYPE_U32,
+ BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
+ NULL, NULL,
+ hclgevf_devlink_rx_buffer_size_validate),
+ DEVLINK_PARAM_DRIVER(HCLGEVF_DEVLINK_PARAM_ID_TX_BUF_SIZE,
+ "tx_buffer_size", DEVLINK_PARAM_TYPE_U32,
+ BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
+ NULL, NULL, NULL),
+};
+
+void hclgevf_devlink_set_params_init_values(struct hclgevf_dev *hdev)
+{
+ union devlink_param_value value;
+
+ value.vu32 = hdev->rx_buf_len;
+ devlink_param_driverinit_value_set(hdev->devlink,
+ HCLGEVF_DEVLINK_PARAM_ID_RX_BUF_LEN,
+ value);
+ value.vu32 = 0;
+ devlink_param_driverinit_value_set(hdev->devlink,
+ HCLGEVF_DEVLINK_PARAM_ID_TX_BUF_SIZE,
+ value);
+}
+
int hclgevf_devlink_init(struct hclgevf_dev *hdev)
{
struct pci_dev *pdev = hdev->pdev;
@@ -127,10 +202,20 @@ int hclgevf_devlink_init(struct hclgevf_dev *hdev)
hdev->devlink = devlink;
+ ret = devlink_params_register(devlink, hclgevf_devlink_params,
+ ARRAY_SIZE(hclgevf_devlink_params));
+ if (ret) {
+ dev_err(&pdev->dev,
+ "failed to register devlink params, ret = %d\n", ret);
+ goto out_param_reg_fail;
+ }
+
devlink_reload_enable(devlink);
return 0;
-
+out_param_reg_fail:
+ hdev->devlink = NULL;
+ devlink_unregister(devlink);
out_reg_fail:
devlink_free(devlink);
return ret;
@@ -145,6 +230,8 @@ void hclgevf_devlink_uninit(struct hclgevf_dev *hdev)
devlink_reload_disable(devlink);
+ devlink_params_unregister(devlink, hclgevf_devlink_params,
+ ARRAY_SIZE(hclgevf_devlink_params));
devlink_unregister(devlink);
devlink_free(devlink);
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.h b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.h
index e09ea3d8a963..2159ec4a3523 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.h
@@ -6,10 +6,17 @@
#include "hclgevf_main.h"
+enum hclgevf_devlink_param_id {
+ HCLGEVF_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
+ HCLGEVF_DEVLINK_PARAM_ID_RX_BUF_LEN,
+ HCLGEVF_DEVLINK_PARAM_ID_TX_BUF_SIZE,
+};
+
struct hclgevf_devlink_priv {
struct hclgevf_dev *hdev;
};
+void hclgevf_devlink_set_params_init_values(struct hclgevf_dev *hdev);
int hclgevf_devlink_init(struct hclgevf_dev *hdev);
void hclgevf_devlink_uninit(struct hclgevf_dev *hdev);
#endif
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index 1e03c4d16125..ce7d652594e1 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -3374,6 +3374,9 @@ static int hclgevf_init_hdev(struct hclgevf_dev *hdev)
goto err_config;
}
+ hclgevf_devlink_set_params_init_values(hdev);
+ devlink_params_publish(hdev->devlink);
+
ret = hclgevf_alloc_tqps(hdev);
if (ret) {
dev_err(&pdev->dev, "failed(%d) to allocate TQPs\n", ret);
--
2.8.1
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