netdev - [PATCHv3 3/3] CDC-NCM: record speed in status method

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Date:   Thu, 18 Feb 2021 11:20:38 +0100
From:   Oliver Neukum <oneukum@...e.com>
To:     netdev@...r.kernel.org, grundler@...omium.org, andrew@...n.ch,
        davem@...emloft.org, hayeswang@...ltek.com, kuba@...nel.org
Cc:     Oliver Neukum <oneukum@...e.com>, Roland Dreier <roland@...nel.org>
Subject: [PATCHv3 3/3] CDC-NCM: record speed in status method

The driver has a status method for receiving speed updates.
The framework, however, had support functions only for devices
that reported their speed upon an explicit query over a MDIO
interface.
CDC_NCM however gets direct notifications from the device.
As new support functions have become available, we shall now
record such notifications and tell the usbnet framework
to make direct use of them without going through the PHY layer.

v2: rebased on upstream
v3: changed variable names

Signed-off-by: Oliver Neukum <oneukum@...e.com>
Tested-by: Roland Dreier <roland@...nel.org>
---
 drivers/net/usb/cdc_ncm.c | 23 +----------------------
 1 file changed, 1 insertion(+), 22 deletions(-)

diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 0d26cbeb6e04..74c1a86b1a71 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -1829,30 +1829,9 @@ cdc_ncm_speed_change(struct usbnet *dev,
 	uint32_t rx_speed = le32_to_cpu(data->DLBitRRate);
 	uint32_t tx_speed = le32_to_cpu(data->ULBitRate);
 
-	/* if the speed hasn't changed, don't report it.
-	 * RTL8156 shipped before 2021 sends notification about every 32ms.
-	 */
-	if (dev->rx_speed == rx_speed && dev->tx_speed == tx_speed)
-		return;
-
+	 /* RTL8156 shipped before 2021 sends notification about every 32ms. */
 	dev->rx_speed = rx_speed;
 	dev->tx_speed = tx_speed;
-
-	/*
-	 * Currently the USB-NET API does not support reporting the actual
-	 * device speed. Do print it instead.
-	 */
-	if ((tx_speed > 1000000) && (rx_speed > 1000000)) {
-		netif_info(dev, link, dev->net,
-			   "%u mbit/s downlink %u mbit/s uplink\n",
-			   (unsigned int)(rx_speed / 1000000U),
-			   (unsigned int)(tx_speed / 1000000U));
-	} else {
-		netif_info(dev, link, dev->net,
-			   "%u kbit/s downlink %u kbit/s uplink\n",
-			   (unsigned int)(rx_speed / 1000U),
-			   (unsigned int)(tx_speed / 1000U));
-	}
 }
 
 static void cdc_ncm_status(struct usbnet *dev, struct urb *urb)
-- 
2.26.2