On Fri, 2024-07-12 at 10:52 -0700, Ben Greear wrote: > Hello, > > I've been trying to get better per MLO link stats. I see that the rx path > stats are there, but in the tx path, I do not see anything other than 'deflink' > getting updated. Yeah, nobody really cared too much about statistics yet. I know. Sorry. Not much time to work on it either now. > And, at least with iwlwifi, I cannot find any way to actually see what link-id > was used to transmit a frame in the tx status callbacks (or anywhere else I looked). You can probably derive that from the band for iwlwifi, since it only supports one active link on each 2.4 / 5 / 6 GHz if at all. And the band I guess you'd get from the LMAC ID or something. Should be in there somewhere... IOW, I think it's possible, but I'm also not entirely sure how we'd do it. > In the case where there is a single active link, then I can hack something together > that should be at least mostly right, but that won't fix any future radio that can > do 2+ active links. > > Any suggestions for best path forward on this? I really think we also need to do some work on the API/cfg80211 level, and have link station statistics in cfg80211 instead of full station, and then combine them to (older) userspace in cfg80211, i.e. if userspace doesn't request broken out per-link statistics. There's probably a bunch of work here, and I only have a vague idea of how it should be done...
