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Re: [RFC V2 0/3] nl80211: allow configuration of BSS selection

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On 01/13/2016 10:49 AM, Arend van Spriel wrote:
This patch series adds support for configuration of BSS selection done by
the driver and/or firmware. It allows user-space to pass selection criteria
with the NL80211_CMD_CONNECT using NL80211_ATTR_BSS_SELECT. When user-space
does provide this attribute and no explicit BSSID is provided it will pass
the BSS selection criteria to the driver if the driver supports it.

When multiple BSS-es are found belonging to the same ESS, ie. Infra-BSS with
same SSID, the criteria can be used to select a BSS. The criteria defined are:

1. RSSI based selection.
2. Band selection, RSSI based selection.
3. RSSI adjustment in given band, RSSI based selection.

V2:
  - incorporate comments from Johannes Berg (may have missed some).
  - split nl80211 patch in two separate patches.

I looked into the suggested mac80211 "demo", but it seems this bss selection could be handled in net/wireless/sme.c for drivers support .assoc() and friends instead of .connect(). However, I recall Jouni suggesting to have NL80211_ATTR_BSS_SELECT in NL80211_CMD_ASSOC as well. So I guess wpa_s uses that command directly?

Regards,
Arend

Arend van Spriel (3):
   nl80211: add extended feature for BSS selection support
   nl80211: add bss selection attribute to CONNECT command
   brcmfmac: add support for nl80211 BSS_SELECT feature

  drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c | 63 ++++++++++++++++
  drivers/net/wireless/brcm80211/brcmfmac/common.c   | 38 ++++++----
  drivers/net/wireless/brcm80211/brcmfmac/core.h     |  1 +
  include/net/cfg80211.h                             | 34 +++++++++
  include/uapi/linux/nl80211.h                       | 52 +++++++++++++
  net/wireless/core.c                                |  5 ++
  net/wireless/nl80211.c                             | 86 ++++++++++++++++++++++
  7 files changed, 264 insertions(+), 15 deletions(-)


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