[gPXE-devel] [PATCH] 802.1Q support for gpxe (was: Re: 802.1Q support for gpxe)

[michael-dev at fami-braun.de]

Hi,

I've reworked the patch to be fully optional and less invasive.

The receiving path is from the raw device via 802.1Q network protocol
into net_rx. The sending path is via linklayer of the proxy device
which adds 802.1Q header and the forwards the iobuf to the link layer
of the raw device. The transmit as well as all other commands to the
proxy device (except pull) are forwarded to the raw device.

Further, there is a vconfig command to add/remove vlan interfaces just
like linux does. In order to have network device names like net0.VID,
I increased the len of the netdevice name to 10 characters and let the
driver decide upon the name.
In order to achieve autobooting from the vlan device without trying to
boot from the raw device first, I optionally added a netboot command.
The code uses netdev_put and netdev_get commands to lock the raw device.

The most tricky part is the irq enable/disable code as well as the
open/close code, the patch just forwards these commands which just works
though there should be open/close counters.

Sincerely,
 M. Braun

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