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History log of /src/sys/net80211/ieee80211.c
RevisionDateAuthorComments
 1.61  21-Aug-2021  andvar fix some more typos in comments/log messages, improve wording as well.
 1.60  06-Oct-2020  roy net80211: Initialise the interface with a decent link state.

Link state transitions to UP when a node is joined and DOWN when left.
This means that with the interface UP, the link state could be UNKNOWN
for a while, implying it can be used in BSS mode.
Which is of course false.

Add a function to set an initial link state based on the operating mode.
Also call this when the operating mode changes.

Basically in BSS and MONITOR it starts off down.
BSS will transition UP and DOWN as before, MONITOR will stay down.
IBSS, AHDEMO and HOSTAP will remain as link unknown because the state is
..... unknown.
 1.59  15-Mar-2020  thorpej Define and implement a locking protocol for the ifmedia / mii layers:
- MP-safe drivers provide a mutex to ifmedia that is used to serialize
access to media-related structures / hardware regsiters. Converted
drivers use the new ifmedia_init_with_lock() function for this. The
new name is provided to ease the transition.
- Un-converted drivers continue to call ifmedia_init(), which will supply
a compatibility lock to be used instead. Several media-related entry
points must be aware of this compatibility lock, and are able to acquire
it recursively a limited number of times, if needed. This is a SPIN
mutex with priority IPL_NET.
- This same lock is used to serialize access to PHY registers and other
MII-related data structures.

The PHY drivers are modified to acquire and release the lock, as needed,
and assert the lock is held as a diagnostic aid.

The "usbnet" framework has had an overhaul of its internal locking
protocols to fit in with the media / mii changes, and the drivers adapted.

USB wifi drivers have been changed to provide their own adaptive mutex
to the ifmedia later via a new ieee80211_media_init_with_lock() function.
This is required because the USB drivers need an adaptive mutex.

Besised "usbnet", a few other drivers are converted: vmx, wm, ixgbe / ixv.

mcx also now calls ifmedia_init_with_lock() because it needs to also use
an adaptive mutex. The mcx driver still needs to be fully converted to
NET_MPSAFE.
 1.58  04-Feb-2020  thorpej Use ifmedia_fini().
 1.57  03-Oct-2019  jmcneill branches: 1.57.2;
ieee80211_announce: Print supported rates with aprint_debug
 1.56  24-Aug-2015  pooka branches: 1.56.18;
sprinkle _KERNEL_OPT
 1.55  18-Oct-2014  snj branches: 1.55.2;
src is too big these days to tolerate superfluous apostrophes. It's
"its", people!
 1.54  21-Mar-2013  christos Instead of always checking for ANYC, make it a valid channel
 1.53  05-Apr-2010  joerg branches: 1.53.8; 1.53.18;
Push the bpf_ops usage back into bpf.h. Push the common ifp->if_bpf
check into the inline functions as well the fourth argument for
bpf_attach.
 1.52  02-Apr-2010  dyoung Delete ieee80211_setbasicrates(). It's buggy, and we drivers can get
along fine without it.
 1.51  26-Mar-2010  dyoung In ieee80211_media_init(), change a pointer that we never write
through to a pointer to const.
 1.50  19-Jan-2010  pooka branches: 1.50.2; 1.50.4;
Redefine bpf linkage through an always present op vector, i.e.
#if NBPFILTER is no longer required in the client. This change
doesn't yet add support for loading bpf as a module, since drivers
can register before bpf is attached. However, callers of bpf can
now be modularized.

Dynamically loadable bpf could probably be done fairly easily with
coordination from the stub driver and the real driver by registering
attachments in the stub before the real driver is loaded and doing
a handoff. ... and I'm not going to ponder the depths of unload
here.

Tested with i386/MONOLITHIC, modified MONOLITHIC without bpf and rump.
 1.49  10-Jan-2009  cegger Introduce ieee80211_setbasicrates().
Use it to set speed in ieee80211_ifattach().
Export new ieee80211_std_rateset_11{a,b,g}.

From OpenBSD.
 1.48  01-Dec-2007  jmcneill branches: 1.48.12; 1.48.14; 1.48.18; 1.48.26;
aprintify
 1.47  16-Nov-2006  christos branches: 1.47.22; 1.47.24; 1.47.30;
__unused removal on arguments; approved by core.
 1.46  12-Oct-2006  christos - sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386
 1.45  08-Mar-2006  lukem branches: 1.45.10; 1.45.12;
Use the SI capitalization for "Hz", "kHz", and "MHz" in comments and strings.
Add a space between numbers and Hz unit.
 1.44  02-Mar-2006  dyoung branches: 1.44.2; 1.44.4;
Miscellaneous ath(4) and net80211 updates and bug-fixes coming from
sam@ and various open source repositories:

ath(4):

Ignore "phantom" beacon misses: should stabilize connections
to access points (no more ceaseless link-UP/DOWN indications).
Also, re-synchronize beacon timer using the TSF in the
first beacon received after joining a BSS---this should
also help suppress spurious beacon misses. I am hopeful
that this will help ath(4) lossage reported by perry@ and
smb@.

Add new configuration through sysctl.

Use a shorter calibration interval until IQ calibration
finishes.

Report antenna noise through radiotap.

Rudiments of Radar Detection / Dynamic Frequency Selection.

Update to HAL version 0.9.16.13.

Update open sources for changes to the HAL API.

Add HALs for additional architectures: add big-endian ELF
HALs for sparc64 and for PowerPC. Also add a Alpha HAL.
These new HALs are untested under NetBSD.

ath(4) + net80211:

Make the multicast transmit rate configurable by ioctl.

Miscellaneous bug fixes.
 1.43  13-Dec-2005  dyoung branches: 1.43.4; 1.43.6;
Fix ieee80211_media2rate to suit the funny order of NetBSD's DSSS
media flags: DS2, DS5, DS11, DS1.
 1.42  25-Nov-2005  thorpej Use a once control to call initialize the 802.11 layer when
ieee80211_ifattach() is called. "wlan" no longer needs-flag,
and remove the ieee80211_init() call from main().
 1.41  18-Nov-2005  skrll Resolve conflicts and adapt to NetBSD.

Thanks to dyoung@, scw@, and perry@ for help testing.

2005-08-30 15:27 avatar

Properly set ic_curchan before calling back to device driver to do channel
switching(ifconfig devX channel Y). This fix should make channel changing
works again in monitor mode.

Submitted by: sam
X-MFC-With: other ic_curchan changes

2005-08-13 18:50 sam

revert 1.64: we cannot use the channel characteristics to decide when to
do 11g erp sta accounting because b/g channels show up as false positives
when operating in 11b.

Noticed by: Michal Mertl

2005-08-13 18:31 sam

Extend acl support to pass ioctl requests through and use this to
add support for getting the current policy setting and collecting
the list of mac addresses in the acl table.

Submitted by: Michal Mertl (original version)
MFC after: 2 weeks

2005-08-10 18:42 sam

Don't use ic_curmode to decide when to do 11g station accounting,
use the station channel properties. Fixes assert failure/bogus
operation when an ap is operating in 11a and has associated stations
then switches to 11g.

Noticed by: Michal Mertl
Reviewed by: avatar
MFC after: 2 weeks

2005-08-10 17:22 sam

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

2005-08-09 11:19 rwatson

Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and
IFF_DRV_RUNNING, as well as the move from ifnet.if_flags to
ifnet.if_drv_flags. Device drivers are now responsible for
synchronizing access to these flags, as they are in if_drv_flags. This
helps prevent races between the network stack and device driver in
maintaining the interface flags field.

Many __FreeBSD__ and __FreeBSD_version checks maintained and continued;
some less so.

Reviewed by: pjd, bz
MFC after: 7 days

2005-08-08 19:46 sam

Split crypto tx+rx key indices and add a key index -> node mapping table:

Crypto changes:
o change driver/net80211 key_alloc api to return tx+rx key indices; a
driver can leave the rx key index set to IEEE80211_KEYIX_NONE or set
it to be the same as the tx key index (the former disables use of
the key index in building the keyix->node mapping table and is the
default setup for naive drivers by null_key_alloc)
o add cs_max_keyid to crypto state to specify the max h/w key index a
driver will return; this is used to allocate the key index mapping
table and to bounds check table loookups
o while here introduce ieee80211_keyix (finally) for the type of a h/w
key index
o change crypto notifiers for rx failures to pass the rx key index up
as appropriate (michael failure, replay, etc.)

Node table changes:
o optionally allocate a h/w key index to node mapping table for the
station table using the max key index setting supplied by drivers
(note the scan table does not get a map)
o defer node table allocation to lateattach so the driver has a chance
to set the max key id to size the key index map
o while here also defer the aid bitmap allocation
o add new ieee80211_find_rxnode_withkey api to find a sta/node entry
on frame receive with an optional h/w key index to use in checking
mapping table; also updates the map if it does a hash lookup and the
found node has a rx key index set in the unicast key; note this work
is separated from the old ieee80211_find_rxnode call so drivers do
not need to be aware of the new mechanism
o move some node table manipulation under the node table lock to close
a race on node delete
o add ieee80211_node_delucastkey to do the dirty work of deleting
unicast key state for a node (deletes any key and handles key map
references)

Ath driver:
o nuke private sc_keyixmap mechansim in favor of net80211 support
o update key alloc api

These changes close several race conditions for the ath driver operating
in ap mode. Other drivers should see no change. Station mode operation
for ath no longer uses the key index map but performance tests show no
noticeable change and this will be fixed when the scan table is eliminated
with the new scanning support.

Tested by: Michal Mertl, avatar, others
Reviewed by: avatar, others
MFC after: 2 weeks

2005-08-08 06:49 sam

use ieee80211_iterate_nodes to retrieve station data; the previous
code walked the list w/o locking

MFC after: 1 week

2005-08-08 04:30 sam

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

2005-08-06 05:57 sam

fix debug msg typo

MFC after: 3 days

2005-08-06 05:56 sam

Fix handling of frames sent prior to a station being authorized
when operating in ap mode. Previously we allocated a node from the
station table, sent the frame (using the node), then released the
reference that "held the frame in the table". But while the frame
was in flight the node might be reclaimed which could lead to
problems. The solution is to add an ieee80211_tmp_node routine
that crafts a node that does exist in a table and so isn't ever
reclaimed; it exists only so long as the associated frame is in flight.

MFC after: 5 days

2005-07-31 07:12 sam

close a race between reclaiming a node when a station is inactive
and sending the null data frame used to probe inactive stations

MFC after: 5 days

2005-07-27 05:41 sam

when bridging internally bypass the bss node as traffic to it
must follow the normal input path

Submitted by: Michal Mertl
MFC after: 5 days

2005-07-27 03:53 sam

bandaid ni_fails handling so ap's with association failures are
reconsidered after a bit; a proper fix involves more changes to
the scanning infrastructure

Reviewed by: avatar, David Young
MFC after: 5 days

2005-07-23 01:16 sam

the AREF flag is only meaningful in ap mode; adhoc neighbors now
are timed out of the sta/neighbor table

2005-07-23 00:25 sam

o move inactivity-related debug msgs under IEEE80211_MSG_INACT
o probe inactive neighbors in adhoc mode (they don't have an
association id so previously were being timed out)

MFC after: 3 days

2005-07-22 22:11 sam

split xmit of probe request frame out into a separate routine that
takes explicit parameters; this will be needed when scanning is
decoupled from the state machine to do bg scanning

MFC after: 3 days

2005-07-22 21:48 sam

split 802.11 frame xmit setup code into ieee80211_send_setup

MFC after: 3 days

2005-07-22 18:57 sam

simplify ic_newassoc callback

MFC after: 3 days

2005-07-22 18:54 sam

simplify ieee80211_ibss_merge api

MFC after: 3 days

2005-07-22 18:50 sam

add stats we know we'll need soon and some spare fields for future expansion

MFC after: 3 days

2005-07-22 18:45 sam

simplify tim callback api

MFC after: 3 days

2005-07-22 18:42 sam

don't include 802.3 header in min frame length calculation as it may
not be present for a frag; fixes problem with small (fragmented) frames
being dropped

Obtained from: Atheros
MFC after: 3 days

2005-07-22 18:36 sam

simplify ieee80211_node_authorize and ieee80211_node_unauthorize api's

MFC after: 3 days

2005-07-22 18:31 sam

simplifiy ieee80211_send_nulldata api

MFC after: 3 days

2005-07-22 18:29 sam

simplify rate set api's by removing ic parameter (implicit in node reference)

MFC after: 3 days

2005-07-22 18:21 sam

reject association requests with a wpa/rsn ie when wpa/rsn is not
configured on the ap; previously we either ignored the ie or (possibly)
failed an assertion

Obtained from: Atheros
MFC after: 3 days

2005-07-22 18:16 sam

missed one in last commit; add device name to discard msgs

2005-07-22 18:13 sam

include device name in discard msgs

2005-07-22 18:12 sam

add diag msgs for frames discarded because the direction field is wrong

2005-07-22 18:08 sam

split data frame delivery out to a new function ieee80211_deliver_data

2005-07-22 18:00 sam

o add IEEE80211_IOC_FRAGTHRESHOLD for getting+setting the
tx fragmentation threshold
o fix bounds checking on IEEE80211_IOC_RTSTHRESHOLD

MFC after: 3 days

2005-07-22 17:55 sam

o add IEEE80211_FRAG_DEFAULT
o move default settings for RTS and frag thresholds to ieee80211_var.h

2005-07-22 17:50 sam

diff reduction against p4: define IEEE80211_FIXED_RATE_NONE and use
it instead of -1

2005-07-22 17:37 sam

add flags missed in last merge

2005-07-22 17:36 sam

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 06:17 sam

send a response when an auth request is denied due to an acl;
might be better to silently ignore the frame but this way we
give stations a chance of figuring out what's wrong

2005-07-22 06:15 sam

remove excess whitespace

2005-07-22 05:55 sam

use IF_HANDOFF when bridging frames internally so if_start gets
called; fixes communication between associated sta's

MFC after: 3 days

2005-07-11 04:06 sam

Handle encrypt of arbitarily fragmented mbuf chains: previously
we bailed if we couldn't collect the 16-bytes of data required
for an aes block cipher in 2 mbufs; now we deal with it. While
here make space accounting signed so a sanity check does the
right thing for malformed mbuf chains.

Approved by: re (scottl)

2005-07-11 04:00 sam

nuke assert that duplicates real check

Reviewed by: avatar
Approved by: re (scottl)
 1.40  26-Jul-2005  dyoung branches: 1.40.6;
Resolve conflicts.
 1.39  11-Jul-2005  dyoung Synchronize ieee80211_find_vap, ieee80211_find_instance.
 1.38  26-Jun-2005  dyoung branches: 1.38.2;
Do not build AP support if 'options IEEE80211_NO_HOSTAP'. I will
use this in the INSTALL kernel to save some space.
 1.37  22-Jun-2005  dyoung Resolve conflicts in importation of 18-May-2005 ath(4) / net80211(9)
from FreeBSD. Introduce compatibility shims (sys/dev/ic/ath_netbsd.[ch],
sys/net80211/ieee80211_netbsd.[ch]). Update drivers (an, atu, atw,
awi, ipw, iwi, rtw, wi) for the new net80211(9) API.
 1.36  20-Jun-2005  atatat Change the rest of the sysctl subsystem to use const consistently.
The __UNCONST macro is now used only where necessary and the RW macros
are gone. Most of the changes here are consumers of the
sysctl_createv(9) interface that now takes a pair of const pointers
which used not to be.
 1.35  09-Jun-2005  atatat Properly fix the constipated lossage wrt -Wcast-qual and the sysctl
code. I know it's not the prettiest code, but it seems to work rather
well in spite of itself.
 1.34  30-May-2005  christos Unconst sysctl_query... hi atatat
 1.33  26-Feb-2005  perry nuke trailing whitespace
 1.32  10-Aug-2004  dyoung branches: 1.32.4; 1.32.6;
Make the node table into an LRU cache: least-recently used nodes
are at the end of the node queue. Change the reference-counting
discipline: ni->ni_refcnt indicates how many times net80211 has
granted ni to the driver. Every node in the table with ni_refcnt=0
is eligible to be garbage-collected. The mere presence of a node
in the table does not any longer indicate its auth/assoc state;
nodes have a ni_state variable, now. A sysctl,
net.link.ieee80211.maxnodecache, controls the maximum LRU cache
size.

While I am here, patch ieee80211_find_node_for_beacon to do a "best
match" by bssid/ssid/channel, not a "perfect match." This keeps
net80211 from caching duplicate nodes in the table.
 1.31  30-Jul-2004  mycroft branches: 1.31.2;
Change the basic rate list for 11g to contain just the 11b modes, mimicking the
behavior of other systems.
 1.30  30-Jul-2004  dyoung For interoperability with legacy equipment, do not enable short
preamble by default.
 1.29  30-Jul-2004  dyoung Change sysctl range-checking: net.link.ieee80211.debug values are
now 0x0 -> 0xffffffff, not 0 -> 2.
 1.28  23-Jul-2004  mycroft Cleanup of ieee80211_node from madwifi:
* Don't use ifp pointers; use ieee80211com.
* Implement the locking macros that are used under FreeBSD and Linux.
 1.27  23-Jul-2004  mycroft Changes from madwifi:
Abstract some of the node management code into separate functions, and use them
throughout, plugging memory leaks.
Allocate the AID allocation map dynamically.
 1.26  23-Jul-2004  mycroft More diff reduction; mainly IEEE80211_DPRINTF() stuff.
 1.25  23-Jul-2004  mycroft Diff reduction vs. madwifi.
Change the signature of IEEE80211_DPRINTF() so that it uses a bitmask, and
convert some of the if_printf()s to IEEE80211_DPRINTF()s. XXX I'm using a
global variable at the moment rather than per-interface.
 1.24  23-Jul-2004  mycroft IEEE80211_MAX_AID has been renamed to IEEE80211_AID_MAX.
 1.23  22-Jul-2004  mycroft The low-level drivers are not setting the "basic rate" bit in the rateset.
Instead, change *_set11gbasicrate() to *_setbasicrates(), have it operate on
all modes, and call it from *_ifattach(). Also, fix obvious bugs in it (it
had an off-by-one error, at least).
 1.22  16-Jul-2004  dyoung Add sysctl access to 802.11 node tables, step #2.
 1.21  16-Jul-2004  dyoung Straggler: *really* chain the ieee80211coms.
 1.20  16-Jul-2004  dyoung Chain ieee80211coms together so that the 802.11 sysctls can walk
them all to retrieve their node tables.
 1.19  06-Jun-2004  dyoung Add sysctl(9) descriptions for net.link and net.link.ieee80211.
 1.18  06-Jun-2004  dyoung Fix a typo in some #ifdef notdef code.
 1.17  06-Jun-2004  dyoung Improve argument checking. Convert from seconds to some number of
inactivity countdown intervals (currently these are 5 seconds).
 1.16  06-Jun-2004  dyoung Fix for kern/25604: ifconfig wi0 media DS11 panics system.

In ieee80211_chan2mode, do not dereference the marker for "any
channel," IEEE80211_CHAN_ANYC.
 1.15  25-May-2004  atatat Sysctl descriptions under net subtree (net.key not done)
 1.14  09-May-2004  dyoung Undo last: I committed the wrong file.
 1.13  09-May-2004  dyoung In ieee80211_find_rxnode, when we "fake up" a node for an ad hoc
peer, we have to copy the "master" rate table to the faked-up node's
rate table, or else ath0 will complain, "ath0: bogus xmit rate
0x0". Thank you Konstantin KABASSANOV for reporting this problem.
 1.12  06-May-2004  dyoung Following Andrew Brown's suggestion, move net.ieee80211 to
net.link.ieee80211. The convention is that nodes directly under
net are protocol families (PF_*).

Also, simplify the sysctl setup for net80211 and rssadapt, following
another suggestion by Andrew.
 1.11  06-May-2004  dyoung Add a sysctl, net.ieee80211.debug, for turning debug messages on
and off.

Add a sysctl, net.ieee80211.maxinact, for adjusting the node time-out
interval. After net.ieee80211.maxinact seconds of inactivity, an
AP will purge a peer/client-record. Now the client has to reassociate.
 1.10  30-Apr-2004  dyoung From FreeBSD. Change ieee80211_phymode_name from
a subroutine back to an array. Rearrange ieee80211_setmode.
Miscellaneous small changes to make our code and FreeBSD's agree.
 1.9  13-Jan-2004  dyoung branches: 1.9.2;
NetBSD's KASSERT takes just one argument while FreeBSD's takes two,
so I have added IASSERT(cond, complaint) to the compatibility header
file and s/KASSERT/IASSERT/'d.
 1.8  14-Dec-2003  dyoung Synchronize with FreeBSD sources from 12 Dec 2003.
 1.7  16-Oct-2003  matt bpfattach/bpfdetach need to be protected with NBPFILTER > 0
 1.6  14-Oct-2003  dyoung Do not index arrays using enum constants, since enums can be
re-ordered and extended. Instead, use a switch-statement or a
key->value table with appropriate bounds-checking.
 1.5  13-Oct-2003  dyoung More changes to the new 802.11 layer:

* Add Kevin Lahey's power-saving support from the old 802.11 layer

* Support for frequency-hopping PHYs

* Add support frequency-hopping PHY mode, IFM_IEEE80211_FH
* Add channel flags for frequency-hopping
* Add mode<->media mappings in for FH PHY in ieee80211_media2rate
and ieee80211_rate2media

* Stop using IFM_MAKEMODE macro since the mode constants
(e.g., IFM_IEEE80211_11A) are pre-shifted in sys/net/if_media.h

* Add some PLCP constants.
 1.4  23-Sep-2003  dyoung Put FreeBSDisms in #ifdef __FreeBSD__, and add the equivalent
NetBSDisms.
 1.3  14-Sep-2003  dyoung Insert RCSIDs.
 1.2  07-Sep-2003  dyoung First stab at producing a unified NetBSD/FreeBSD 802.11 layer,
striving to keep the diffs short and simple.

* Replace FreeBSDisms (e.g. struct arpcom) with conditionally-compiled
NetBSDism (struct ethercom).

* Add compatibility shims in ieee80211_compat.*: provide NetBSD with
if_printf, for example.

* Convert FreeBSD node mutex uses to generic node critical-section
protection (ieee80211_node_critsect_begin, _end), replace
FreeBSD atomic arithmetic with generic alternative, and implement
generics in NetBSD

* Provide NetBSD-style 802.11 ioctls

* Style nits
 1.1  30-Aug-2003  dyoung branches: 1.1.1;
Initial revision
 1.1.1.5  18-Nov-2005  skrll Import FreeBSD's net80211(9) of 1-nov-2005
 1.1.1.4  21-Jun-2005  dyoung Import FreeBSD's net80211(9) of 2005-05-18
 1.1.1.3  29-Apr-2004  dyoung Import FreeBSD's net80211 of 28-apr-2004
 1.1.1.2  13-Dec-2003  dyoung Import FreeBSD's net80211 of 12 Dec 2003
 1.1.1.1  30-Aug-2003  dyoung Pull in net80211/ from FreeBSD. This contains Sam Leffler's
enhancements to the 802.11 layer, which are necessary for ath(4),
the Atheros-chipset driver.
 1.9.2.2  23-Jul-2004  he Pull up revision 1.23 (via patch, requested by mycroft in ticket #700):
Many bug fixes and performance fixes for the wi(4) driver,
as well as changes paving the way for further performance
improvements.
 1.9.2.1  07-Jun-2004  jdc Pull up revision 1.16 (requested by dyoung in ticket #449).

Fix for kern/25604: ifconfig wi0 media DS11 panics system.

In ieee80211_chan2mode, do not dereference the marker for "any
channel," IEEE80211_CHAN_ANYC.
 1.31.2.8  11-Dec-2005  christos Sync with head.
 1.31.2.7  10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.31.2.6  04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.31.2.5  21-Sep-2004  skrll Fix the sync with head I botched.
 1.31.2.4  18-Sep-2004  skrll Sync with HEAD.
 1.31.2.3  12-Aug-2004  skrll Sync with HEAD.
 1.31.2.2  03-Aug-2004  skrll Sync with HEAD
 1.31.2.1  30-Jul-2004  skrll file ieee80211.c was added on branch ktrace-lwp on 2004-08-03 10:54:20 +0000
 1.32.6.1  19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.32.4.1  29-Apr-2005  kent sync with -current
 1.38.2.2  07-Dec-2007  yamt sync with head
 1.38.2.1  21-Jun-2006  yamt sync with head.
 1.40.6.2  29-Nov-2005  yamt sync with head.
 1.40.6.1  22-Nov-2005  yamt sync with head.
 1.43.6.1  22-Apr-2006  simonb Sync with head.
 1.43.4.1  09-Sep-2006  rpaulo sync with head
 1.44.4.1  19-Apr-2006  elad sync with head.
 1.44.2.1  13-Mar-2006  yamt sync with head.
 1.45.12.2  10-Dec-2006  yamt sync with head.
 1.45.12.1  22-Oct-2006  yamt sync with head
 1.45.10.1  18-Nov-2006  ad Sync with head.
 1.47.30.1  08-Dec-2007  mjf Sync with HEAD.
 1.47.24.1  09-Jan-2008  matt sync with HEAD
 1.47.22.1  01-Dec-2007  jmcneill Sync with HEAD.
 1.48.26.1  19-Jan-2009  skrll Sync with HEAD.
 1.48.18.3  11-Aug-2010  yamt sync with head.
 1.48.18.2  11-Mar-2010  yamt sync with head
 1.48.18.1  04-May-2009  yamt sync with head.
 1.48.14.1  17-Jan-2009  mjf Sync with HEAD.
 1.48.12.1  22-Feb-2008  skrll Beginning of a sync with net80211 from FreeBSD. Lots to do.

Sources taken from 2008-02-22.
 1.50.4.1  30-May-2010  rmind sync with head
 1.50.2.1  30-Apr-2010  uebayasi Sync with HEAD.
 1.53.18.2  03-Dec-2017  jdolecek update from HEAD
 1.53.18.1  23-Jun-2013  tls resync from head
 1.53.8.1  22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.55.2.1  22-Sep-2015  skrll Sync with HEAD
 1.56.18.9  16-Apr-2020  nat Use if_stat functions.
 1.56.18.8  13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.56.18.7  10-Jun-2019  christos Sync with HEAD
 1.56.18.6  15-Aug-2018  phil Final changes for 200 hour contract. Still a lot of work to do.
With these changes, Station mode works with an open AP.
 1.56.18.5  28-Jul-2018  phil End of the week state save:
Got workqueues doing FreeBSD tasks. (still questions on how correct it is.)
Incremental changes in many places.
Still *lots* of debugging code that needs to go away some day.
"ifconfig urtwn0 up" now does not crash, still needs scan to work properly.
 1.56.18.4  20-Jul-2018  phil State save:
urtwn: ifp->if_softc points to a vap, not the urtwn softc, fix code for this.
add missing routines, need to get them filled out correctly.
80211: Add back some NetBSD ioctls, start working on the sysctl tree.
 1.56.18.3  16-Jul-2018  phil State save.
urtwn now can attach and shows up in the "ifconfig -a" list.
 1.56.18.2  12-Jul-2018  phil State save. New kernel config for this brach only. TESTWIFI does
produce a kernel. It is not working. athn files not compiling yet
and commented out of the TESTWIFI kernel, which only has urtwn 802.11
driver enabled. ieee80211_alq.c and ieee80211_ddb.c not compiling yet.
 1.56.18.1  28-Jun-2018  phil Start of WiFi refresh. Copy of FreeBSD net80211 directory with git
mirror commit id of 09e3123164ec345822e00465039503686efde455, no
changes yet. ieee80211_netbsd.[ch] from ieee80211_freebsd.[ch].
 1.57.2.1  29-Feb-2020  ad Sync with head.

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