Update ax88179_178a USB ethernet driver and improve USB ethernet speeds for ODROID-XU3

[ddcc]

For the ODROID-XU3, the original implementation of the ax88179_178a driver in ce49d2c was not from the upstream kernel, but from another repository which is now out-of-date. Along the way, modifications were made in e9bd5c8 to this driver to enable TCP Segment Offload (TSO) and Scatter Gather (SG), but this can cause instability with xHCI host controllers.

This patch restores the implementation of ax88179_178a to the latest version (95ff886) in the master branch of torvalds/linux, plus some USB ethernet queue optimizations from upstream in a88c32a and 452c447.

[Obihoernchen]

Did you have a look at the newest driver from ASIX (1.14.4)? http://www.asix.com.tw/FrootAttach/driver/AX88179_178A_LINUX_DRIVER_v1.14.4_SOURCE.zip

[Obihoernchen]

nevermind just compared v1.13.0 (ce49d2c) to v1.14.4 there is no real difference (ignoring whitespace changes):

51c51
< #define DRV_VERSION   "1.13.0"
---
> #define DRV_VERSION   "1.14.4"
55c55
<       " " __TIME__ " " __DATE__ "\n"
---
> //    " " __TIME__ " " __DATE__ "\n"
1282a1283
>                       #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 34)
1283a1285,1287
>                       #else
>                               devdbg(dev, "Failed to read MAC address from EEPROM: %d\n", ret);
>                       #endif
1301a1306
>       u8 default_mac_178a[6] = {0, 0x0e, 0xc6, 0x81, 0x78, 0x01};
1305c1310,1311
<           !memcmp(dev->net->dev_addr, default_mac, ETH_ALEN)) {
---
>           !memcmp(dev->net->dev_addr, default_mac, ETH_ALEN) ||
>           !memcmp(dev->net->dev_addr, default_mac_178a, ETH_ALEN)) {
1318a1325
> #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36)
1319a1327
> #endif
2109a2118,2151
> static const struct driver_info dlink_info = {
>       .description = "DUB-1312/1332 USB3.0 to Gigabit Ethernet Adapter",
>       .bind   = ax88179_bind,
>       .unbind = ax88179_unbind,
>       .status = ax88179_status,
>       .link_reset = ax88179_link_reset,
>       .reset  = ax88179_reset,
> #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 32)
>       .stop   = ax88179_stop,
>       .flags  = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_AVOID_UNLINK_URBS,
> #else
>       .flags  = FLAG_ETHER | FLAG_FRAMING_AX,
> #endif
>       .rx_fixup = ax88179_rx_fixup,
>       .tx_fixup = ax88179_tx_fixup,
> };
>
> static const struct driver_info mct_info = {
>         .description = "USB 3.0 to Gigabit Ethernet Adapter",
>         .bind   = ax88179_bind,
>         .unbind = ax88179_unbind,
>         .status = ax88179_status,
>         .link_reset = ax88179_link_reset,
>         .reset  = ax88179_reset,
> #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 32)
>         .stop   = ax88179_stop,
>         .flags  = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_AVOID_UNLINK_URBS,
> #else
>         .flags  = FLAG_ETHER | FLAG_FRAMING_AX,
> #endif
>         .rx_fixup = ax88179_rx_fixup,
>         .tx_fixup = ax88179_tx_fixup,
> };
>
2134a2177,2184
> }, {
>       /* D-Link DUB-13x2 Ethernet Adapter */
>       USB_DEVICE(0x2001, 0x4a00),
>       .driver_info = (unsigned long) &dlink_info,
> }, {
>       /* MCT USB 3.0 to Gigabit Ethernet Adapter */
>       USB_DEVICE(0x0711, 0x0179),
>       .driver_info = (unsigned long) &mct_info,

[Obihoernchen]

Using this for more than 3 weeks now without problems.