iwm: switch to ieee80211_add_channel()

[avos]

Summary

• Switch to ieee80211_add_channel().
• Parse/set more channel flags (DFS, NOADHOC).
• Add ic_getradiocaps() method.

Test Plan

Needs testing (ifconfig wlan0 create wlandev iwm0 up && ifconfig wlan0 list chan; the output should not differ).

[adrian]

sys/dev/iwm/if_iwmvar.h

200

We should use a #define size or something here, otherwise when we move to 11n /someone/ will forget to bump it. :-P

[avos]

sys/dev/iwm/if_iwmvar.h

200

maybe, I should put iwm_nvm_channels[] somewhere in if_iwmreg.h (and use it size here directly)?

[adrian]

If you do that then it'll likely just get duplicated in each file that includes that .h file.

Just put a _MAX define somewhere, and a compile-time assert in if_iwm.c that the #define is = or larger than the set size. That'll at least fail compilation if someone ups the number of channel entries when we do 11n/11ac.

[avos]

Refresh.

[avos]

sys/dev/iwm/if_iwm.c

1734

iwlwifi doesn't enforce this limitation - probably, this (and other limitations) should be set by ieee80211_regdomain(9) (not used right now (except IEEE80211_IOC_REGDOMAIN ioctl)).

[adrian]

looks good, I'll update tonight when you've committed it and report back.

[avos]

head/sys/dev/iwm/if_iwm.c

175 ↗

(On Diff #15789)

CTASSERT(9) manpage states that 'The CTASSERT() macro is deprecated and the C11 standard _Static_assert() should be used instead' - so I've replaced CTASSERT() with _Static_assert. No other changes were done.