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en:developers:summits:berlin-2009:notes
Table of Contents
Notes
full-mac support
- Need more capability info for card's supported features
- add request IEs to cfg80211_connected() & to nl80211 event
- add wpa version, cipher suites etc. from IW_AUTH to CONNECT cmd
- add cfg80211_register_netdev(netdev)
- add cfg80211_register_iwpriv(netdev, handlers) to support vendor drivers moving to cfg80211, MUST be done BEFORE cfg80211_register_netdev
test mode
{ .cmd = NL80211_CMD_TESTMODE, .dumpit = NULL, .doit = NULL, .policy = NULL, .flags = GENL_ADMIN_PERM, }- testmode.dumpit = driver_ops.testmode_dumpit etc.
- no API rules
- compiled out by default, hard to enable, depends on CONFIG_DEBUG?
- small example tool in userspace?
- new multicast ID, nl80211_test_event(skb), maybe overwrite the CMD
antenna settings
- new antenna settings API needed
rate control (and userspace API)
- for debug: set of bitrates, legacy & ht (this is generic)
- * optionally with _MAC attribute for per-station setting (e.g. for fixed links in a mesh)
- * also export this information back in station info in nl80211
- noop bitrate algorithm for TI 1271 chip
- need generic HT rate algorithm
- need simpler rate control algorithm due to CPU usage (PID?)
- want API for switching algorithm, export list of names, select by name
- stick with debugfs for more advanced per algo control/debug
- we want to have multicast bitrate control (e.g. by looking through station list)
- have allowed-multicast-rates bitmap
- add ht bitrate reporting to GIWRATE, just export the speed
wext deprecation
- * publish community statement that we no longer want wext
action frame processing
- * receive action frame multicast group per interface
- * use _FRAME attribute for the frames
- * send action frame, TA verified in cfg80211
- * commitment for handling action frames when mcast group is used
- * restrict group to one process (is that even possible?)
- * require extra commitment command, but commitment goes away once process dies, closes socket, unbinds mcast group
- * frame should be buffered during scan
- * (maybe later: location frame, add channel attribute in send cmd?)
- * good capability handling for all of this
- * filter (-EINVAL) when wrong frame is transmitted (e.g. != public-action before association, != action while associated…)
channel stats/noise reporting
- * channel statistics (currently channel use, maybe noise floor later)
- * add flag to request this while starting a scan
- * remove iwconfig noise report
ROAMING (moving within ESS)
- * good bg scan algorithm
- * export roaming capabilities of driver/device combination (mac80211==none, iwm==full)
- * link quality event?
- * * signal change
- * * packet loss
- * * rate going down
- * * beacon loss this needs configurable thresholds from userspace
en/developers/summits/berlin-2009/notes.txt · Last modified: 2015/01/26 09:49 (external edit)
