七月迭代短暂完结,还有很多后端的关键东西没有弄,这是一版赶时间做的东西

docs/gateway-client-usage.md

@@ -212,28 +212,28 @@ func (s *Service) GetDeviceSlots(ctx context.Context, imei string) ([]gateway.Sl
 }
 ```
 
-#### 设置设备限速
+#### 设置流量卡固定限速档位
 
 ```go
-func (s *Service) SetDeviceSpeed(ctx context.Context, imei string, uploadKBps, downloadKBps int) error {
-    err := s.gatewayClient.SetSpeedLimit(ctx, &gateway.SpeedLimitReq{
-        DeviceID:      imei,
-        UploadSpeed:   uploadKBps,
-        DownloadSpeed: downloadKBps,
+func (s *Service) SetCardSpeedTier(ctx context.Context, iccid string, code int) error {
+    err := s.gatewayClient.SetCardSpeedTier(ctx, &gateway.CardSpeedTierReq{
+        CardNo: iccid,
+        Code:   strconv.Itoa(code),
     })
     if err != nil {
-        return errors.Wrap(errors.CodeGatewayError, err, "设置限速失败")
+        return errors.Wrap(errors.CodeGatewayError, err, "设置流量卡固定限速档位失败")
     }
 
-    s.logger.Info("设置限速成功",
-        zap.String("imei", imei),
-        zap.Int("upload", uploadKBps),
-        zap.Int("download", downloadKBps),
+    s.logger.Info("设置流量卡固定限速档位成功",
+        zap.String("iccid", iccid),
+        zap.Int("code", code),
     )
     return nil
 }
 ```
 
+Gateway 限速对象只有流量卡 ICCID。设备没有限速接口，业务代码不得传入设备 ID、IMEI，也不得先解析设备当前绑定卡再间接限速。
+
 #### 设置设备 WiFi
 
 ```go