Commit Graph

48 Commits

Author SHA1 Message Date
sam
35a6c17cb8 change ic_modecaps to a bit vector and use setbit, et. al. 2007-03-11 22:37:32 +00:00
sam
a0ffc08348 expose IEEE80211_DISCARD, IEEE80211_DISCARD_IE, and IEEE80211_DISCARD_MAC
so they can be used within net80211 but outside ieee80211_input.c

MFC after:	2 weeks
2007-03-11 07:15:38 +00:00
sam
369e4f0ba4 correct conversions between TU and ms/ticks; these are not used
by any code in the tree[1] and are close enough for common values
that this change is a noop

[1] ath uses one macro to calculate a value that is not used
Submitted by:	sephe
MFC after:	1 week
2007-03-05 18:52:35 +00:00
kmacy
c933a59d56 fix declaration / definition mismatch with ieee80211_chan2ieee 2007-01-06 02:56:41 +00:00
sam
4442f89b49 First cut at half/quarter-rate 11a channel support (e.g. for use
in the Public Safety Band):
o add channel flags to identify half/quarter-rate operation
o add rate sets (need to check spec on 4Mb/s in 1/4 rate)
o add if_media definitions for new rates
o split net80211 channel setup out into ieee80211_chan_init
o fixup ieee80211_mhz2ieee and ieee80211_ieee2mhz to understand half/quarter
  rate channels: note we temporarily use a nonstandard/hack numbering that
  avoids overlap with 2.4G channels because we don't (yet) have enough
  state to identify and/or map overlapping channel sets
o fixup ieee80211_ifmedia_init so it can be called post attach and will
  recalculate the channel list and associated state; this enables changing
  channel-related state like the regulatory domain after attach (will be
  needed for 802.11d support too)
o add ieee80211_get_suprates to return a reference to the supported rate
  set for a given channel
o add 3, 4.5, and 27 MB/s tx rates to rate <-> media conversion routines
o const-poison channel arg to ieee80211_chan2mode
2006-12-27 18:46:18 +00:00
sam
2b69a396bd add rate control debug msg bit
MFC after:	1 month
2006-11-26 19:55:57 +00:00
sam
a245550432 add support for 802.11 packet injection via bpf
Together with:	Andrea Bittau <a.bittau@cs.ucl.ac.uk>
Reviewed by:	arch@
MFC after:	1 month
2006-07-26 03:15:16 +00:00
sam
0e7f6a5c5f o move min/max beacon interval and dtim period to public location
o add min/max beacon miss threshold settings
o delete IEEE80211_SWBMISS_THRESHOLD, it was never used

MFC after:	2 weeks
2006-07-26 03:05:34 +00:00
sam
d3539a10d4 when scanning channels marked passive defer probe request until
802.11 traffic is seen; fixes problems with ap's hiding their ssid

Obtained from:	atheros
MFC after:	1 week
2006-03-06 17:23:26 +00:00
sam
bb2e6821fa o make driver override of net80211 parameter state consistent
with methods: instead of honoring non-zero values expect drivers
  to write their own values on return from ieee80211_ifattach
o add a define for the default h/w bmiss count

MFC after:	2 weeks
2006-02-14 17:48:56 +00:00
sam
90a825465e s/w beacon miss facility; need to add knobs to fiddle with the settings
MFC after:	2 weeks
2006-01-23 21:02:49 +00:00
sam
311f7976bc switch beacon miss threshold from a time to the number of beacon
frames; the time value was implicitly based on the beacon interval
but never being updated so wrong when the negotiated beacon interval
was not 100 TU
2006-01-23 20:57:30 +00:00
sam
f48869decc update erp information element in the beacon frame to reflect
changes in the bss

Reviewed by:	avatar
Obtained from:	atheros
MFC after:	2 weeks
2006-01-02 16:57:20 +00:00
sam
d27cba6029 correct (reversed) ms<->tu macros
Reviewed by:	apatti, kcyu
2005-12-29 19:03:45 +00:00
sam
7fcf256cd8 make packet bursting configurable (default to on if device is capable) 2005-12-14 19:32:53 +00:00
sam
2911d079c2 Add ieee80211_beacon_miss for processing sta mode beacon miss events
in the 802.11 layer: we send a directed probe request frame to the
current ap bmiss_max times (w/o answer) before scanning for a new ap.

MFC after:	2 weeks
2005-12-12 18:04:44 +00:00
sam
9b57399d9c add fixed rate for sending multicast frames
Obtained from:	atheros
MFC after:	1 week
2005-12-12 17:54:39 +00:00
sam
0bc81b5357 Update ieee80211_mhz2ieee to understand public safety bands and spectrum
that can potentially be mapped to negative ieee #'s.

NB: before operation on the latter can be supported we need to cleanup
    various code that assumes ieee channel #'s are >= 0
2005-11-15 05:56:32 +00:00
sam
7d1366bf6d Clarify/fix handling of the current channel:
o add ic_curchan and use it uniformly for specifying the current
  channel instead of overloading ic->ic_bss->ni_chan (or in some
  drivers ic_ibss_chan)
o add ieee80211_scanparams structure to encapsulate scanning-related
  state captured for rx frames
o move rx beacon+probe response frame handling into separate routines
o change beacon+probe response handling to treat the scan table
  more like a scan cache--look for an existing entry before adding
  a new one; this combined with ic_curchan use corrects handling of
  stations that were previously found at a different channel
o move adhoc neighbor discovery by beacon+probe response frames to
  a new ieee80211_add_neighbor routine

Reviewed by:	avatar
Tested by:	avatar, Michal Mertl
MFC after:	2 weeks
2005-08-10 16:22:30 +00:00
sam
a71123cebf Cleanup beacon/listen interval handling:
o separate configured beacon interval from listen interval; this
  avoids potential use of one value for the other (e.g. setting
  powersavesleep to 0 clobbers the beacon interval used in hostap
  or ibss mode)
o bounds check the beacon interval received in probe response and
  beacon frames and drop frames with bogus settings; not clear
  if we should instead clamp the value as any alteration would
  result in mismatched sta+ap configuration and probably be more
  confusing (don't want to log to the console but perhaps ok with
  rate limiting)
o while here up max beacon interval to reflect WiFi standard

Noticed by:	Martin <nakal@nurfuerspam.de>
MFC after:	1 week
2005-08-08 03:30:57 +00:00
sam
0bcf56e9b9 simplify ic_newassoc callback
MFC after:	3 days
2005-07-22 17:57:16 +00:00
sam
7e6c91d028 simplify tim callback api
MFC after:	3 days
2005-07-22 17:45:48 +00:00
sam
6f738197e3 o add IEEE80211_FRAG_DEFAULT
o move default settings for RTS and frag thresholds to ieee80211_var.h
2005-07-22 16:55:27 +00:00
sam
3876d0ac68 diff reduction against p4: define IEEE80211_FIXED_RATE_NONE and use
it instead of -1
2005-07-22 16:50:18 +00:00
sam
0ad70d5aa7 add flags missed in last merge 2005-07-22 16:37:56 +00:00
sam
b04f929442 Diff reduction against p4:
o add ic_flags_ext for eventual extention of ic_flags
o define/reserve flag+capabilities bits for superg,
  bg scan, and roaming support
o refactor debug msg macros

MFC after:	3 days
2005-07-22 16:36:12 +00:00
sam
61cabe0353 add "pureg" mode for ap operation: reject association requests from
11b-only stations when operating in 11g

Reviewed by:	avatar
Approved by:	re (scottl)
2005-07-06 15:38:27 +00:00
sam
0a48913a6f o collect dtim period+count from beacons in station mode so drivers
can better program beacon timers
o leave placeholder in com structure for future ap/adhoc mode tim support

Reviewed by:	avatar
2005-06-09 04:05:43 +00:00
sam
01ce092a3a o clarify that beacon interval settings are in TU's, not ms
o add macros to convert between TU's and ms
2005-01-24 19:39:07 +00:00
sam
459bcc3dba statically allocate the station/neighbor node table; the deferred
allocation scheme introduced a race condition during device state
transitions
2005-01-24 19:32:10 +00:00
sam
14fee97914 bump copyright for 2005 2004-12-31 22:42:38 +00:00
sam
83e6bc9990 add ieee80211_hdrspace and ieee80211_anyhdrspace to calculate the space
for an ieee80211 header taking into account padding requirements
2004-12-31 20:56:32 +00:00
sam
2843bf259e Update 802.11 support; too much new functionality to fully describe
here but it includes completed 802.11g, WPA, 802.11i, 802.1x, WME/WMM,
AP-side power-save, crypto plugin framework, authenticator plugin framework,
and access control plugin frameowrk.
2004-12-08 17:26:47 +00:00
sam
95fbaa6dad eliminate nested include by making MALLOC_DECLARE conditional on the
inclusion of <sys/malloc.h>

Submitted by:	bde
2004-04-05 22:10:26 +00:00
sam
0eac2dcc6f export the malloc type M_80211_NODE for drivers that override the node
allocation routines
2004-04-05 04:17:03 +00:00
sam
b024266b89 fix adhoc/ibss operation for drivers that require host support (e.g. ath):
o remove IEEE80211_C_RCVMGT capability
o on transmit craft new nodes as needed using new ieee80211_find_txnode routine
o add ieee80211_find_txnode routine to lookup a node by mac address and
  if not present create one when operating in ibss/ahdemo mode; new nodes
  are dup'd from bss and the driver is told to treat the node as if a new
  association has been created so driver-private state (e.g. rate control
  handling) is setup

Obtained from:	netbsd (basic idea)
2004-04-02 23:25:39 +00:00
sam
2f7d679f76 o add support for controlling the power of transmitted frames
o add support for controlling the 11g protection mechanism used
  to protect OFDM frames in a mixed 11b/g network

Reviewed by:	imp
2004-03-30 22:57:57 +00:00
onoe
df98da69f8 Add support for FH phy, which will be used by awi driver.
Also some if_media constants to indicate operational mode are changed
to bitmasks to reduce diffs from NetBSD.
2004-01-15 08:44:27 +00:00
sam
eefb2fc9e8 add statistics for all failures and/or abnormal events; still need
to add per-node statistics
2003-10-17 23:15:30 +00:00
sam
23522eb855 correct comment 2003-10-17 21:56:42 +00:00
sam
98b46f244c o add capability to indicate if device receives all management frames
o use recv mgmt capability to decide if outbound frames should be
  discarded if no node table entry is present
2003-10-17 21:54:59 +00:00
sam
04780f09b9 Try yet again to deal with timing out nodes. We cannot hold the
node lock while sending a management frame as this will potentially
result in a LOR with a driver lock.  This doesn't happen for the
Atheros driver but does for the wi driver.  Use a generation number
to help process each node once when scanning the node table and
drop the node lock if we need to timeout a node and send a frame.
2003-09-26 17:00:44 +00:00
sam
c9c933e78b Generalize the per-node RSSI data so drivers can do more interesting
things than record a single value.

o add a per-node method for returning the "current RSSI" for a node
o create a default method that returns ni_rssi which is the rssi for
  the last received frame
o use the per-node "get rssi" method to return data for the RID's
  submitted by wicontrol, et. al.

Loosely based on work by Tom Marshall <tommy@home.tig-grr.com> for MADWIFI.
2003-09-15 22:28:07 +00:00
sam
1c1194250d MFp4 changes to fix locking issues and correct reference
count handling of station entries in hostap mode:

Input path:

o driver is now expected to find the node associated with the
  sender of a received frame; use ic_bss if none is located
o driver passes the (referenced) node into ieee80211_input for
  use within the wlan module and is responsible for cleaning up
  on return
o the antenna state is no longer passed up with each frame; this
  is now considered driver-private state and drivers are responsible
  for keeping it in the driver-private part of a node

Output path:

Revamp output path for management frames to eliminate redundant
locking that causes problems and to correct reference counting
bogosity that occurs when stations are timed out due to inactivity
(in AP mode).  On output the refcnt'd node is stashed in the pkthdr's
recvif field (yech) and retrieved by the driver.  This eliminates
an unref/ref scenario and related node table unlock/lock due to the
driver looking up the node.  This is particularly important when
stations are timed out as this causes a lock order reversal that
can result in a deadlock.  As a byproduct we also reduce the overhead
for sending management frames (minimal).  Additional fallout from
this is a change to ieee80211_encap to return a refcn't node for
tieing to the outbound frame.  Node refcnts are not reclaimed until
after a frame is completely processed (e.g. in the tx interrupt
handler).  This is especially important for timed out stations as
this deref will be the final one causing the node entry to be
reclaimed.

Additional semi-related changes:
o replace m_copym use with m_copypacket (optimization)
o add assert to verify ic_bss is never free'd during normal operation
o add comments explaining calling conventions by drivers for frames
  going in each direction
o remove extraneous code that "cannot be executed" (e.g. because
  pointers may never be null)
2003-08-19 22:17:04 +00:00
sam
7629ee78c2 add monitor mode 2003-07-21 02:49:42 +00:00
sam
51c8bf1aeb o change ieee80211_new_state handling to use a proper method that drivers
override in their sub-class; this eliminates the hack of interpreting the
  EINPROGRESS return value to mean "don't do any of the normal work"
o correct active scanning so the first channel is only scanned once and so
  per-channel passive mode is properly honored
o expose 802.11 FSM state names so every driver doesn't keep a private copy
o eliminate node parameter to ieee80211_begin_scan; it was not being used
2003-07-20 21:36:08 +00:00
sam
350cc1a8b5 revise copyright notices per discussion with Atsushi Onoe <onoe@sm.sony.co.jp> 2003-06-27 05:13:52 +00:00
sam
505adc686a new 802.11 layer:
o code reorg (relative to old netbsd-derived code) for future growth
o drivers now specify available channels and rates and 802.11 layer handles
  almost all ifmedia actions
o multi-mode support for 11a/b/g devices
o 11g protocol additions (incomplete)
o new element id additions (for other than 11g)
o node/station table redone for proper locking and to eliminate driver
  incestuousness
o split device flags and capabilities to reduce confusion and provide room
  for expansion
o incomplete power management infrastructure (need to revisit)
o incomplete hooks for software retry
o more...
2003-06-23 16:55:01 +00:00