iwlwifi.4: Update modes for recent 802.11ac

[ziaee]

Summary

Reported by: Pat Maddox <[e-mail]>

[bz]

If we want to stay more accurate.

We'll also need to add fwget(8) as in rtw88(4) but I'll open a separate review for this.
I need to update the man page from the script the next days hopefully anyway.

share/man/man4/iwlwifi.4

257

the compatibility code currently only supports 802.11a/b/g/n/ac modes (802.11n/ac only for the 22000 and later chipsets).

[ziaee]

Do you think it's okay to use the style I used for firmware in the latest draft of iwx.4? I think the predictability of following the mdoc standard sections is a major strength of this type of documentation, and I think it's reasonable to put the snippet about firmware and fwget in FILES, so that really helps with the structure of the page.

[ziaee]

Thanks bz!

[emaste]

share/man/man4/iwlwifi.4

68–69

I'm not really sure it's right to claim iwx supports "older" chipsets - iwx is a driver providing complementary support for some of the same devices supported by this driver.

259–260

We ought to combine these statements -- .11ax, .11be, 6GHz are all to come.

[bz]

Pressing equest changes for @emaste

share/man/man4/iwlwifi.4

68–69

Then we should rephrase the entire bit as the same goes for iwm. Or just say "support a selection of chipsets" or something like that?

From an iwlwifi point of view iwx is an older driver (dvm == ~iwn, mvm == ~iwm/iwx, mld == no equivalent). Loking at 6.15-rc the MLD bits from the BE200 and later (11be chipsets and later) are split out now. We've supported them since 14.1(?) when they part of mvm still. OpenBSD can write their next driver copy now. And we can likely just add "bn" as well to the list by the end of the year and be good.

[ziaee]

Fix glaring omission in CAVEATS, thanks @emaste!
Revert attempt to mention iwx, I'm starting to understand out of scope.