[net80211] Quieten the logging from ieee80211_vht_get_vhtflags()

[adrian]

Summary

The commit in Fixes: introduced logging the output bits from
ieee80211_vht_get_vhtflags(). This ends up causing quite a lot
of logging when net80211 is doing things like processing
received beacons.

So just remove the logging; if it's needed again then a developer
can add it back to that location, or just use dtrace to capture
the return value.

Fixes: 4bf049bfeefd9

[bz]

sys/net80211/ieee80211_ht.c

1936

On which (properly done) driver do you see (say) 10 beacons a second?

My net80211 wlanstats says I saw 35 beacons in 9 hours of uptime.
For iwx see email; beacon filtering is disabled (or not finished).

How much doe you see on rtwn or iwn?

I'd suggest to solve it this way:

if (0} IEEE80211_NOTE...

Disabling the logging if it really bothers you and you think this is an issue here.

[adrian]

sys/net80211/ieee80211_ht.c

1936

I'll disable it like this.

For rtwn, that processes all the beacons all the time (they're not ONLY handled in firmware):

adrian@francine:~ % wlanstats -i wlan0 | grep -i beacon
36113             rx beacon frames
1                 beacon miss events handled

[adrian]

request from bz

[bz]

sys/net80211/ieee80211_ht.c

1939

Can you please reduce this to one line changed?

[adrian]

comment from bz

[adrian]

ok, reduced to one line diff, please re-review! thanks!