dnsmasq has all that is needed to support a basic PXE boot.
- dnsmasq is already installed and doing it's work: so no need to install, just configure

- enable tftp in dnsmasq
- specify tftp-root
- specify boot file

The /etc/config/dnsmasq does not seem to support the above, so one has to edit /etc/init.d/dnsmasq for this.

To test, remember that dnsmasq only supports binary if you want to get the file with a tftp client program.

Then follow your favorite HOW-TO for PXE using openwrt as dhcp/tftp/boot server

/etc/init.d/dnsmasq
- with, for example, tftproot /mnt/usbdrive

start() {
    include /lib/network
    scan_interfaces
    config_load /var/state/network
    config_load dhcp
#      args=""
    args=" --enable-tftp --tftp-root=/mnt/usbdrive --dhcp-boot=/mnt/usbdrive/pxelinux.0"

(Last edited by oxo on 12 Oct 2008, 21:32)

Hi,

support for those options is now added in https://dev.openwrt.org/changeset/12960 .

Now you can do:

uci set dhcp.@dnsmasq[0].enable_tftp=1
uci set dhcp.@dnsmasq[0].tftp_root=/mnt/usbdrive
uci set dhcp.@dnsmasq[0].dhcp_boot=/mnt/usbdrive/pxelinux.0
uci commit dhcp
/etc/init.d/dnsmasq restart

~ JoW

Edit: corrected uci commands

(Last edited by jow on 22 Oct 2008, 17:23)

Thanks

Lovely.
- I was just looking at the code as to how to configure in configuration: but you beat me to it

(Last edited by oxo on 13 Oct 2008, 13:21)

I haven' figured out how to get LuCi to take these values with add custom in dnsmasq screen
- for example tftpboot can be entered but then it is lost ...

It's not implemented yet, it will be included in one of the upcoming rc releases after rc1

~ JoW

I forgot to say that I am running an image from the trunk