[PATCH v2 00/18] wifi: rtl8xxxu: Add AP mode support for 8188f

[Martin Kaistra <martin.kaistra@linutronix.de>]

This series intends to bring AP mode support to the rtl8xxxu driver,
more specifically for the 8188f, because this is the HW I have.
The work is based on the vendor driver as I do not have access to
datasheets.

Also while doing some measurements with iperf3 to compare with the
vendor driver, I saw, that TCP traffic from AP to STA is slower than in
the vendor driver. For UDP it looks fine. I hope I can get some help to
fix this.

* vendor driver:

  without 802.11n:
    UDP (AP -> STA): 27 Mbits/sec
    UDP (STA -> AP): 33 Mbits/sec
    TCP (AP -> STA): 24 Mbits/sec
    TCP (STA -> AP): 26 Mbits/sec

  with 802.11n:
    UDP (AP -> STA): 51 Mbits/sec
    UDP (STA -> AP): 35 Mbits/sec
    TCP (AP -> STA): 40 Mbits/sec
    TCP (STA -> AP): 36 Mbits/sec

* rtl8xxxu:

  without 802.11n:
    UDP (AP -> STA): 25 Mbits/sec
    UDP (STA -> AP): 31 Mbits/sec
    TCP (AP -> STA):  3 Mbits/sec !
    TCP (STA -> AP): 25 Mbits/sec

  with 802.11n:
    UDP (AP -> STA): 41 Mbits/sec
    UDP (STA -> AP): 36 Mbits/sec
    TCP (AP -> STA):  3 Mbits/sec !
    TCP (STA -> AP): 32 Mbits/sec

Thanks,
  Martin

v2 changelog:
- dropped RFC prefix
- rebase patches to newest wireless-next
- add some R-bs
- new patch: "Add parameter force to rtl8xxxu_refresh_rate_mask"
- new patch: "Remove usage of ieee80211_get_tx_rate()"
- new patch: "Remove usage of tx_info->control.rates[0].flags"
- new patch: "Set maximum number of supported stations"
- add macro for broadcast/multicast frames macid
- add more explanation about beacon queue in commit message of patch 2
- add macros for bit definitions for beacon functions
- implement enable_beacon = false case
- fix beacon valid loop so that error condition is actually reached
- add more explanation about setting mac address register in add_interface
  in commit message of patch 6
- rename role macros for connect report h2c
- use bitmap for assigning macids
- add helper function for looking up assigned macids
- move patch 7 so we can use rtl8xxxu_get_macid helper
- add sta_remove callback
- do things in sta_add only in AP mode
- use IEEE80211_TX_CTL_ASSIGN_SEQ flag to determine when to use HW sequence
  numbers
- add priv->vif null pointer check in configure_filter, rework setting
  BSSID_BEACON/BSSID_MATCH in RCR

v1: https://lore.kernel.org/linux-wireless/20230322171905.492855-1-martin.kaistra@linutronix.de/

Martin Kaistra (18):
  wifi: rtl8xxxu: Add start_ap() callback
  wifi: rtl8xxxu: Select correct queue for beacon frames
  wifi: rtl8xxxu: Add beacon functions
  wifi: rtl8xxxu: Add set_tim() callback
  wifi: rtl8xxxu: Allow setting rts threshold to -1
  wifi: rtl8xxxu: Allow creating interface in AP mode
  wifi: rtl8xxxu: Actually use macid in rtl8xxxu_gen2_report_connect
  wifi: rtl8xxxu: Add parameter role to report_connect
  wifi: rtl8xxxu: Add parameter force to rtl8xxxu_refresh_rate_mask
  wifi: rtl8xxxu: Add sta_add() and sta_remove() callbacks
  wifi: rtl8xxxu: Put the macid in txdesc
  wifi: rtl8xxxu: Add parameter macid to update_rate_mask
  wifi: rtl8xxxu: Enable hw seq for mgmt/non-QoS data frames
  wifi: rtl8xxxu: Clean up filter configuration
  wifi: rtl8xxxu: Remove usage of ieee80211_get_tx_rate()
  wifi: rtl8xxxu: Remove usage of tx_info->control.rates[0].flags
  wifi: rtl8xxxu: Declare AP mode support for 8188f
  wifi: rtl8xxxu: Set maximum number of supported stations

 .../net/wireless/realtek/rtl8xxxu/rtl8xxxu.h  |  39 +-
 .../realtek/rtl8xxxu/rtl8xxxu_8188e.c         |   3 +-
 .../realtek/rtl8xxxu/rtl8xxxu_8188f.c         |   2 +
 .../wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 346 ++++++++++++++----
 .../wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h |   5 +
 5 files changed, 311 insertions(+), 84 deletions(-)

-- 
2.30.2