Add attribute for the rx_turbo mode to allow run-time configuration of this feature.
Note, this requires a restart of the device to take effect. Signed-off-by: Ben Dooks <[email protected]> --- drivers/net/usb/smsc95xx.c | 41 +++++++++++++++++++++++++++++++++++++- 1 file changed, 40 insertions(+), 1 deletion(-) diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index 1eb0795ec90f..330c3cf5d6f6 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -73,6 +73,7 @@ struct smsc95xx_priv { u8 features; u8 suspend_flags; u8 mdix_ctrl; + bool rx_turbo; bool link_ok; struct delayed_work carrier_check; struct usbnet *dev; @@ -1103,7 +1104,7 @@ static int smsc95xx_reset(struct usbnet *dev) "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n", read_buf); - if (!turbo_mode) { + if (!pdata->rx_turbo) { burst_cap = 0; dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; } else if (dev->udev->speed == USB_SPEED_HIGH) { @@ -1259,6 +1260,37 @@ static const struct net_device_ops smsc95xx_netdev_ops = { .ndo_set_features = smsc95xx_set_features, }; +static inline struct smsc95xx_priv *dev_to_priv(struct device *dev) +{ + struct usb_interface *ui = container_of(dev, struct usb_interface, dev); + return usbnet_to_smsc(usb_get_intfdata(ui)); +} + +/* Currently rx_turbo will not take effect until next close/open */ +static ssize_t rx_turbo_show(struct device *adev, + struct device_attribute *attr, + char *buf) +{ + struct smsc95xx_priv *priv = dev_to_priv(adev); + return snprintf(buf, PAGE_SIZE, "%d", priv->rx_turbo); +} + +static ssize_t rx_turbo_store(struct device *adev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct smsc95xx_priv *priv = dev_to_priv(adev); + bool res; + + if (kstrtobool(buf, &res)) + return -EINVAL; + + priv->rx_turbo = res; + return count; +} + +static DEVICE_ATTR_RW(rx_turbo); + static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) { struct smsc95xx_priv *pdata = NULL; @@ -1280,6 +1312,7 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) if (!pdata) return -ENOMEM; + pdata->rx_turbo = turbo_mode; spin_lock_init(&pdata->mac_cr_lock); /* LAN95xx devices do not alter the computed checksum of 0 to 0xffff. @@ -1328,6 +1361,11 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) INIT_DELAYED_WORK(&pdata->carrier_check, check_carrier); schedule_delayed_work(&pdata->carrier_check, CARRIER_CHECK_DELAY); + ret = device_create_file(&dev->udev->dev, &dev_attr_rx_turbo); + if (ret) + netdev_warn(dev->net, + "failed to create rx_turbo attribute: %d\n", ret); + return 0; } @@ -1336,6 +1374,7 @@ static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf) struct smsc95xx_priv *pdata = usbnet_to_smsc(dev); if (pdata) { + device_remove_file(&dev->udev->dev, &dev_attr_rx_turbo); cancel_delayed_work(&pdata->carrier_check); netif_dbg(dev, ifdown, dev->net, "free pdata\n"); kfree(pdata); -- 2.19.1
