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Commit 45af3fb4 authored by Glen Turner's avatar Glen Turner Committed by David S. Miller
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usb/net/asix_devices: Add USBNET HG20F9 ethernet dongle 

This USB ethernet adapter was purchased in anodyne packaging
from the computer store adjacent to linux.conf.au 2013 in
Canberra (Australia). A web search shows other recent
purchasers in Lancaster (UK) and Seattle (USA). Just like an
emergent virus, our age of e-commerce and airmail allows
underdocumented hardware to spread around the world instantly
using the vector of ridiculously low prices.

Paige Thompson, infected via eBay, discovered that the HG20F9
is a copy of the Asix 88772B; many viruses copy the RNA of
other viruses. See Paige's work at
<https://github.com/paigeadele/HG20F9

>.
This patch uses her discovery to update the restructured Asix
driver in the current kernel.

Just as some viruses inhabit seemingly-healthy cells, the
HG20F9 uses the Vendor ID 0x066b assigned to Linksys Inc.
For the present there is no clash of Product ID 0x20f9.

Signed-off-by: default avatarGlen Turner <gdt@gdt.id.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1f84eab4

drivers/net/usb/asix_devices.c

+31 −0
Original line number Diff line number Diff line
@@ -924,6 +924,29 @@ static const struct driver_info ax88178_info = { 
	.tx_fixup = asix_tx_fixup,

};



/*

 * USBLINK 20F9 "USB 2.0 LAN" USB ethernet adapter, typically found in

 * no-name packaging.

 * USB device strings are:

 *   1: Manufacturer: USBLINK

 *   2: Product: HG20F9 USB2.0

 *   3: Serial: 000003

 * Appears to be compatible with Asix 88772B.

 */

static const struct driver_info hg20f9_info = {

	.description = "HG20F9 USB 2.0 Ethernet",

	.bind = ax88772_bind,

	.unbind = ax88772_unbind,

	.status = asix_status,

	.link_reset = ax88772_link_reset,

	.reset = ax88772_reset,

	.flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR |

	         FLAG_MULTI_PACKET,

	.rx_fixup = asix_rx_fixup_common,

	.tx_fixup = asix_tx_fixup,

	.data = FLAG_EEPROM_MAC,

};



extern const struct driver_info ax88172a_info;



static const struct usb_device_id	products [] = {
@@ -1063,6 +1086,14 @@ static const struct usb_device_id products [] = { 
	/* ASIX 88172a demo board */

	USB_DEVICE(0x0b95, 0x172a),

	.driver_info = (unsigned long) &ax88172a_info,

}, {

	/*

	 * USBLINK HG20F9 "USB 2.0 LAN"

	 * Appears to have gazumped Linksys's manufacturer ID but

	 * doesn't (yet) conflict with any known Linksys product.

	 */

	USB_DEVICE(0x066b, 0x20f9),

	.driver_info = (unsigned long) &hg20f9_info,

},

	{ },		// END

};