Since 802.11s just landed into upstream kernel git, I was eager to take a look at this mash network thing. Oh, how ignorant I was. OLPC uses 802.11s protocol which is different from official implementation of 802.11s and with good reason: they are using embedded processor in wifi card do to mash protocol for them (saving power and enabling mash to work when laptop is suspended). I could have installed olsr on OLPC, but I'm really trying to have bigger mash which is compatible with unmodified OLPCs.
Because my time is limited, I would like to work in user-land if at all possible, and since wpa_supplicant can work on unmodified kernels, it would be nice to have that level of support for OLPC mash also. After a lot of browsing (and reading few really great wifi hacking sites), I concluded that only hope is radiotap which is more-or-less supported on every pcmcia wifi card that I have (prism based 802.11b card and rt2500). I had also found simpliest possible code which uses radiotap to start with.
Now, I would just need another OLPC to save some network traces and start experimenting :-)
Aside from that, I switched totally to OLPC for this week, and amazingly enough, I didn't miss my Eee PC one tiny bit. Although a bit slower than Eee, OLPC screen is bigger (and better in black and write mode on sunlight) which helps a lot with web pages. Browser performance is amazing, so I have little doubt that we will be able to support most of web sites on OLPC without much problem. OOH, I did notice a couple of excessive round-tips on one of my web sites, while surfing on it, but that's for best anyway :-)
Update: According to message on libertas-dev mail list there is effort to use kernel's 802.11s implementation which makes my effort in supporting OLPC variant obsolete.