Hi,

Le jeudi 05 juillet 2012 04:44:33, Andy Green a ?crit :

The following series adds some code to generate legal, locally administered
MAC addresses from OMAP4 CPU Die ID fuse data, and then adds a helper at
net/ethernet taking care of accepting device path / MAC mapping
registrations and running a notifier to enforce the requested MAC when the
matching network device turns up.

This looks like something you can solve by user-space entirely. Expose the 
OMAP4 CPU Die ID using a sysfs attribute, and let user-space manage the MAC 
address pool.

If you tell me you want to use this for nfsroot booting, what prevents you 
from using an initramfs, assign a valid MAC to your interface and switch over 
your nfsroot once the interface setup is done?

On PandaBoard / ES, two devices have no board-level MAC either assigned by
the manufacturer or stored on the board, the last patch in the series adds
these device paths and gets them set when the network device is registered.

Lastly for convenient testing, there's a little patch on
omap2plus_defconfig that will get Ethernet and WLAN up on Pandaboard.

The patches are against today's linux-omap.

Thanks to Tony Lindgren and Arnd Bergmann for comments leading to the
helper in net/ethernet.

---

Andy Green (4):
      OMAP: add cpu id register to MAC address helper
      NET ethernet introduce mac_platform helper
      OMAP4 PANDA register ethernet and wlan for automatic mac allocation
      config test config extending omap2plus with wl12xx etc


 arch/arm/configs/omap2plus_defconfig   |   35 +++----
 arch/arm/mach-omap2/Kconfig            |    1
 arch/arm/mach-omap2/board-omap4panda.c |   30 ++++++
 arch/arm/mach-omap2/id.c               |   39 ++++++++
 arch/arm/mach-omap2/include/mach/id.h  |    1
 include/net/mac-platform.h             |   39 ++++++++
 net/Kconfig                            |    5 +
 net/ethernet/Makefile                  |    3 +
 net/ethernet/mac-platform.c            |  151
++++++++++++++++++++++++++++++++ 9 files changed, 282 insertions(+), 22
deletions(-)
 create mode 100644 include/net/mac-platform.h
 create mode 100644 net/ethernet/mac-platform.c


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-- 
Florian