Re: [PATCH 1/2] net: usb: cdc_ether: add NCSI passthrough support

On Tue, Sep 08, 2026 at 08:45:36PM +0800, Potin Lai wrote:

On Tue, Sep 8, 2026 at 2:17 AM Andrew Lunn [off-list ref] wrote:

quoted

quoted

+/* NCSI operates at 100 Mbps */
+#define NCSI_SPEED_BPS               (100 * 1000000)

Why 100Mbps? RGMII is often used, running at 1G.

Since the original NC-SI specification was designed based on the
RMII protocol, simply set the speed to 100 Mbps as the default
for this virtual USB link.

How is this used? You could look at the USB link and return 1.5Mbps,
12Mbps, 480MBps, 5Gbps, 10Gbps, ...

	Andrew