[v3,00/22] add support for S1G association

This is the initial S1G patchset which adds support for:

- defining the S1G 900MHz bands in a custom regulatory database
- setting and receiving S1G beacons (sending short beacons will be
  supported in a future patch)
- configuring S1G capabilities in Association Request (setting
  capabilities along with NL80211_CMD_SET_STATION will be added later).
- scanning on S1G bands
- handling S1G Association Response format
- correctly encoding Listen Interval for S1G
- associating in mac80211
- testing S1G in mac80211_hwsim

Rate control is still TBD, this patchset simply lops off the rate
control hooks for S1G so eg. missing sband->bitrates and S1G Basic Rate
set can't do too much damage.

Note the mac80211_hwsim S1G support introduces a regression in a few
hostap hwsim tests. This is because when processing the reported bands,
hostap assumes freq < 4000 is 11b, and the actual 11b/g band is
overwritten by the S1G band info. Though it does count as a userspace
regression, I'm not sure there is much to do about it besides apply a
small patch to hostapd which treats freq < 2000 as an unknown band.

After the hostap workaround
(https://lists.infradead.org/pipermail/hostap/2020-August/038748.html),
these patches continue to pass the hwsim tests as well as HEAD.

Thomas Pedersen (22):
  ieee80211: redefine S1G bits with GENMASK
  nl80211: advertise supported channel width in S1G
  cfg80211: regulatory: handle S1G channels
  nl80211: correctly validate S1G beacon head
  nl80211: support setting S1G channels
  {cfg,mac}80211: get correct default channel width for S1G
  mac80211: s1g: choose scanning width based on frequency
  nl80211: support S1G capabilities
  mac80211: support S1G STA capabilities
  cfg80211: convert S1G beacon to scan results
  cfg80211: parse S1G Operation element for BSS channel
  mac80211: convert S1G beacon to scan results
  cfg80211: handle Association Response from S1G STA
  mac80211: encode listen interval for S1G
  mac80211: don't calculate duration for S1G
  mac80211: handle S1G low rates
  mac80211: avoid rate init for S1G band
  mac80211: receive and process S1G beacons
  mac80211: support S1G association
  nl80211: include frequency offset in survey info
  mac80211_hwsim: fix TSF timestamp write to S1G beacon
  mac80211_hwsim: indicate support for S1G

 drivers/net/wireless/mac80211_hwsim.c |  93 +++++++++--
 include/linux/ieee80211.h             | 223 +++++++++++++++++---------
 include/net/cfg80211.h                |  28 ++++
 include/net/mac80211.h                |   3 +
 include/uapi/linux/nl80211.h          |  26 +++
 net/mac80211/cfg.c                    |   2 +
 net/mac80211/chan.c                   |   9 +-
 net/mac80211/ibss.c                   |   3 +-
 net/mac80211/ieee80211_i.h            |  20 +++
 net/mac80211/iface.c                  |   5 +
 net/mac80211/mlme.c                   | 184 +++++++++++++++++----
 net/mac80211/rate.c                   |  39 ++++-
 net/mac80211/rx.c                     |  87 +++++-----
 net/mac80211/scan.c                   |  37 ++++-
 net/mac80211/tx.c                     |   4 +
 net/mac80211/util.c                   | 200 +++++++++++++++++++++++
 net/wireless/chan.c                   | 140 ++++++++++------
 net/wireless/mlme.c                   |  20 +++
 net/wireless/nl80211.c                |  52 +++++-
 net/wireless/reg.c                    |  70 ++++++--
 net/wireless/scan.c                   |  80 +++++++--
 net/wireless/util.c                   |  32 ++++
 22 files changed, 1091 insertions(+), 266 deletions(-)