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History log of /src/sys/net80211/ieee80211_ioctl.c
RevisionDateAuthorComments
 1.69  21-Sep-2021  christos don't opencode kauth_cred_get()
 1.68  24-Jul-2021  andvar Fix all remaining typos, mainly in comments but also in few definitions and log messages, reported by me in PR kern/54889.
Also fixed some additional typos in comments, found on review of same files or typos.
 1.67  10-Nov-2019  chs branches: 1.67.12;
in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.
 1.66  17-May-2019  msaitoh Remove extra OSIOCSIFMEDIA. This old ioctl is converted to new one in
doifioctl().
 1.65  11-Apr-2019  kamil Fix CVS Id

NFCI
 1.64  01-Mar-2019  pgoyette Rename the MODULE_*_HOOK() macros to MODULE_HOOK_*() as briefly
discussed on irc.

NFCI intended.

Ride the earlier kernel bump - it;s getting crowded.
 1.63  29-Jan-2019  pgoyette Normalize all the compat hooks' names to the form

<subsystem>_<function>_<version>_hook

NFCI

XXX Note that although this introduces a change in the kernel-to-
XXX module interface, we are NOT bumping the kernel version number.
XXX We will bump the version number once the interface stabilizes.
 1.62  28-Jan-2019  christos - Don't expose random data conversion functions, but expose the high level
entry point (such as ioctl) instead.
- Attempt to autoload the module before using it.

Naming: Should the names of the hooks be:
<category>_<version>_<function>_hook_t
or:
<category>_<function>_<version>_hook_t

We should make those consistent.
 1.61  27-Jan-2019  pgoyette Merge the [pgoyette-compat] branch
 1.60  24-Aug-2015  pooka branches: 1.60.16; 1.60.18;
sprinkle _KERNEL_OPT
 1.59  25-Jan-2014  christos branches: 1.59.6;
fix monitor mode channel.
 1.58  12-Sep-2013  martin Fix return value of ieee80211_ioctl_setoptie
 1.57  31-Dec-2011  christos branches: 1.57.6; 1.57.10;
- fix offsetof usage, and redundant defines
- kill pointer casts to 0
 1.56  12-Jun-2011  christos branches: 1.56.2; 1.56.6;
Change i_len in ieee80211req to be unsigned and fix other signed/unsigned
issues. From Dan Rosenberg (drosenberg at vsecurity dot com).
 1.55  02-Apr-2011  mbalmer branches: 1.55.2;
Fix misplaced parenthesis. From henning.petersen@t-online.de, thanks.
 1.54  18-Apr-2009  tsutsui branches: 1.54.4; 1.54.6;
Remove extra whitespace added by a stupid tool.
XXX: more in src/sys/arch
 1.53  18-Mar-2009  cegger bcopy -> memcpy
 1.52  18-Mar-2009  cegger bzero -> memset
 1.51  17-Dec-2008  cegger branches: 1.51.2;
kill MALLOC and FREE macros.
 1.50  07-Nov-2008  dyoung *** Summary ***

When a link-layer address changes (e.g., ifconfig ex0 link
02:de:ad:be:ef:02 active), send a gratuitous ARP and/or a Neighbor
Advertisement to update the network-/link-layer address bindings
on our LAN peers.

Refuse a change of ethernet address to the address 00:00:00:00:00:00
or to any multicast/broadcast address. (Thanks matt@.)

Reorder ifnet ioctl operations so that driver ioctls may inherit
the functions of their "class"---ether_ioctl(), fddi_ioctl(), et
cetera---and the class ioctls may inherit from the generic ioctl,
ifioctl_common(), but both driver- and class-ioctls may override
the generic behavior. Make network drivers share more code.

Distinguish a "factory" link-layer address from others for the
purposes of both protecting that address from deletion and computing
EUI64.

Return consistent, appropriate error codes from network drivers.

Improve readability. KNF.

*** Details ***

In if_attach(), always initialize the interface ioctl routine,
ifnet->if_ioctl, if the driver has not already initialized it.
Delete if_ioctl == NULL tests everywhere else, because it cannot
happen.

In the ioctl routines of network interfaces, inherit common ioctl
behaviors by calling either ifioctl_common() or whichever ioctl
routine is appropriate for the class of interface---e.g., ether_ioctl()
for ethernets.

Stop (ab)using SIOCSIFADDR and start to use SIOCINITIFADDR. In
the user->kernel interface, SIOCSIFADDR's argument was an ifreq,
but on the protocol->ifnet interface, SIOCSIFADDR's argument was
an ifaddr. That was confusing, and it would work against me as I
make it possible for a network interface to overload most ioctls.
On the protocol->ifnet interface, replace SIOCSIFADDR with
SIOCINITIFADDR. In ifioctl(), return EPERM if userland tries to
invoke SIOCINITIFADDR.

In ifioctl(), give the interface the first shot at handling most
interface ioctls, and give the protocol the second shot, instead
of the other way around. Finally, let compatibility code (COMPAT_OSOCK)
take a shot.

Pull device initialization out of switch statements under
SIOCINITIFADDR. For example, pull ..._init() out of any switch
statement that looks like this:

switch (...->sa_family) {
case ...:
..._init();
...
break;
...
default:
..._init();
...
break;
}

Rewrite many if-else clauses that handle all permutations of IFF_UP
and IFF_RUNNING to use a switch statement,

switch (x & (IFF_UP|IFF_RUNNING)) {
case 0:
...
break;
case IFF_RUNNING:
...
break;
case IFF_UP:
...
break;
case IFF_UP|IFF_RUNNING:
...
break;
}

unifdef lots of code containing #ifdef FreeBSD, #ifdef NetBSD, and
#ifdef SIOCSIFMTU, especially in fwip(4) and in ndis(4).

In ipw(4), remove an if_set_sadl() call that is out of place.

In nfe(4), reuse the jumbo MTU logic in ether_ioctl().

Let ethernets register a callback for setting h/w state such as
promiscuous mode and the multicast filter in accord with a change
in the if_flags: ether_set_ifflags_cb() registers a callback that
returns ENETRESET if the caller should reset the ethernet by calling
if_init(), 0 on success, != 0 on failure. Pull common code from
ex(4), gem(4), nfe(4), sip(4), tlp(4), vge(4) into ether_ioctl(),
and register if_flags callbacks for those drivers.

Return ENOTTY instead of EINVAL for inappropriate ioctls. In
zyd(4), use ENXIO instead of ENOTTY to indicate that the device is
not any longer attached.

Add to if_set_sadl() a boolean 'factory' argument that indicates
whether a link-layer address was assigned by the factory or some
other source. In a comment, recommend using the factory address
for generating an EUI64, and update in6_get_hw_ifid() to prefer a
factory address to any other link-layer address.

Add a routing message, RTM_LLINFO_UPD, that tells protocols to
update the binding of network-layer addresses to link-layer addresses.
Implement this message in IPv4 and IPv6 by sending a gratuitous
ARP or a neighbor advertisement, respectively. Generate RTM_LLINFO_UPD
messages on a change of an interface's link-layer address.

In ether_ioctl(), do not let SIOCALIFADDR set a link-layer address
that is broadcast/multicast or equal to 00:00:00:00:00:00.

Make ether_ioctl() call ifioctl_common() to handle ioctls that it
does not understand.

In gif(4), initialize if_softc and use it, instead of assuming that
the gif_softc and ifp overlap.

Let ifioctl_common() handle SIOCGIFADDR.

Sprinkle rtcache_invariants(), which checks on DIAGNOSTIC kernels
that certain invariants on a struct route are satisfied.

In agr(4), rewrite agr_ioctl_filter() to be a bit more explicit
about the ioctls that we do not allow on an agr(4) member interface.

bzero -> memset. Delete unnecessary casts to void *. Use
sockaddr_in_init() and sockaddr_in6_init(). Compare pointers with
NULL instead of "testing truth". Replace some instances of (type
*)0 with NULL. Change some K&R prototypes to ANSI C, and join
lines.
 1.49  05-Apr-2008  mlelstv branches: 1.49.4; 1.49.10; 1.49.12;
revert the broken DeMorgan-ification
 1.48  07-Feb-2008  dyoung branches: 1.48.4; 1.48.6;
Start patching up the kernel so that a network driver always has
the opportunity to handle an ioctl before generic ifioctl handling
occurs. This will ease extending the kernel and sharing of code
between drivers.

First steps: Make the signature of ifioctl_common() match struct
ifinet->if_ioctl. Convert SIOCSIFCAP and SIOCSIFMTU to the new
ifioctl() regime, throughout the kernel.
 1.47  28-Nov-2007  degroote Fix compilation in case of COMPAT_FREEBSD_NET80211.

Any reason that we use by default the old api ioctl instead of the 'new' api ioctl ?
(Time is a good reason :)).
 1.46  29-May-2007  christos branches: 1.46.6; 1.46.8; 1.46.14;
Add a sockaddr_storage member to "struct ifreq" maintaining backwards
compatibility with the older ioctls. This avoids stack smashing and
abuse of "struct sockaddr" when ioctls placed "struct sockaddr_foo's" that
were longer than "struct sockaddr".
XXX: Some of the emulations might be broken; I tried to add code for
them but I did not test them.
 1.45  04-Mar-2007  christos branches: 1.45.2; 1.45.4;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.44  06-Jan-2007  dyoung branches: 1.44.2;
Extract all of the FreeBSD compatibility ioctls into a subroutine,
ieee80211_ioctl_get80211_fbsd(), eliminating a bunch of #ifdef/#endif
clutter.
 1.43  16-Nov-2006  christos __unused removal on arguments; approved by core.
 1.42  27-Oct-2006  elad oops - passing wrong integer.
 1.41  25-Oct-2006  elad Kill some KAUTH_GENERIC_ISSUSER.
 1.40  12-Oct-2006  christos - sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386
 1.39  09-Aug-2006  christos branches: 1.39.2; 1.39.4;
Use curchan in monitor mode. From Dheeraj S. FreeBSD always uses curchan,
and maybe we should too.
 1.38  23-Jul-2006  ad Use the LWP cached credentials where sane.
 1.37  27-Jun-2006  drochner fix some pointer botches which made wiconfig panic my machine
 1.36  22-Jun-2006  christos PR/33794: Arnaud Degroote: Wiconfig is broken in current. I broke it with
the previous set of stack changes.
 1.35  12-Jun-2006  christos branches: 1.35.2;
don't allocate chans on the stack.
 1.34  12-Jun-2006  christos Don't allocate wi_req on the stack.
 1.33  12-Jun-2006  christos Don't use roundup(IEEE80211_CHAN_MAX, NBBY) which is wrong anyway
[correct would have been howmany(...), use IEEE80211_CHAN_BYTES,
which is used in the other ioctl method. While here s/u_char/u_int8_t/
for chanlist to match the rest of the uses.
 1.32  14-May-2006  elad branches: 1.32.2;
integrate kauth.
 1.31  17-Mar-2006  christos don't use MALLOC with a non-constant size; use malloc instead.
 1.30  02-Mar-2006  dyoung branches: 1.30.2; 1.30.4; 1.30.6;
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.
 1.29  27-Feb-2006  dyoung Simplify SIOCS80211BSSID, making it work just like IEEE80211_IOC_BSSID.
The upshot is that the interface is *always* reset when a BSSID is
configured. While I am here, rename unwieldy empty_macaddr variable
to zerobssid.
 1.28  18-Jan-2006  christos branches: 1.28.2; 1.28.4;
Apply patch from FreeBSD-SA-06:05. This avoids the overflow during the
lenght calculation phase instead of just growing the buffer like the older
patch did. I am leaving the bigger buffer too for now since it does not hurt.
 1.27  13-Jan-2006  christos Avoid buffer overflow in ioctl (from Karl Janmar)
 1.26  18-Nov-2005  skrll branches: 1.26.2;
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)
 1.25  27-Jul-2005  dyoung branches: 1.25.6;
We don't really have FreeBSD 802.11 compatibility, and it will take
more work to get it right, so change the misleading COMPAT_FREEBSD
#ifdefs to #ifdef __FreeBSD__.
 1.24  27-Jul-2005  dyoung IEEE80211_IOC_BEACON_INTERVAL is not duplicated by SIOC[SG]80211POWER,
as I thought. The latter actually sets the station listen interval.

We cannot get/set "drop-unencrypted" and "privacy" properties
independently with SIOCS80211NWKEY, so put back IEEE80211_IOC_PRIVACY
and IEEE80211_IOC_DROPUNENCRYPTED.

Thanks Sam Leffler for pointing out my mistakes.
 1.23  27-Jul-2005  dyoung NetBSD already has ioctls that get/set these parameters. Only
compile support for the duplicate ioctls from FreeBSD if it is a
COMPAT_FREEBSD kernel:

IEEE80211_IOC_SSID
IEEE80211_IOC_WEPTXKEY
IEEE80211_IOC_CHANNEL
IEEE80211_IOC_PRIVACY
IEEE80211_IOC_DROPUNENCRYPTED
IEEE80211_IOC_BSSID
IEEE80211_IOC_BEACON_INTERVAL
IEEE80211_IOC_WEPKEY
 1.22  27-Jul-2005  dyoung Restore ABI compatibility with SIOCG80211STATS, SIOCG80211ZSTATS
in NetBSD 2.0:

* If 2.x compatibility is enabled (#ifdef COMPAT_20),
compile support for OSIOCG80211STATS and OSIOCG80211ZSTATS,
with the same ioctl numbers as SIOCG80211STATS and
SIOCG80211ZSTATS in 2.x. OSIOCG80211STATS and
OSIOCG80211ZSTATS return an ieee80211_ostats struct,
which has the same layout as ieee80211_stats in 2.x.

* Add new ioctl numbers for SIOCG80211STATS and SIOCG80211ZSTATS.
Both these ioctls will copy at most ifr_buflen bytes of
the new ieee80211_stats to ifr_buf.
 1.21  26-Jul-2005  dyoung Resolve conflicts.
 1.20  26-Jun-2005  dyoung branches: 1.20.2;
Do not build AP support if 'options IEEE80211_NO_HOSTAP'. I will
use this in the INSTALL kernel to save some space.
 1.19  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.
 1.18  26-Feb-2005  perry nuke trailing whitespace
 1.17  20-Dec-2004  dyoung branches: 1.17.2; 1.17.4;
Add SIOCG80211ZSTATS to atomically get/clear 802.11 statistics.

Protect SIOCG80211STATS with splnet()/splx() so that it takes a
"snapshot" of the 802.11 statistics, which is superfluous if
ieee80211_ioctl is always called at splnet()....
 1.16  23-Jul-2004  mycroft branches: 1.16.2;
IEEE80211_F_WEPON -> IEEE80211_F_PRIVACY
 1.15  06-May-2004  dyoung No need to suppress if_init calls, ether_ioctl already does it.
Also, ether_ioctl handles more address families than ieee80211_ioctl
was.
 1.14  06-May-2004  dyoung NetBSD does not contain IPX support.
 1.13  06-May-2004  dyoung Fix spelling: supress -> suppress.
 1.12  06-May-2004  dyoung Check if_init error.
 1.11  05-May-2004  cube In NetBSD, if_init() expects a struct ifnet, not the softc.
 1.10  30-Apr-2004  dyoung From FreeBSD. Handle 802.11g protection mode and
Tx power control ioctls.
 1.9  21-Apr-2004  itojun kill some strcpy
 1.8  16-Jan-2004  onoe Ignore WI_RID_STA_IDENTITY and WI_RID_DBM_ADJUST instead of EINVAL
to allow wiconfig to report other informations.
 1.7  14-Dec-2003  dyoung Synchronize with FreeBSD sources from 12 Dec 2003.
 1.6  07-Dec-2003  dyoung Get/set fragmentation threshold. DTRT when the RTS threshold is
set.
 1.5  13-Oct-2003  dyoung Fix PR 23146 (sys/net80211/ intergration break WEP/power management
function) from FUKAUMI Naoki.
 1.4  28-Sep-2003  dyoung Adapt ieee80211_ioctl.[ch] to suit NetBSD. NetBSD and FreeBSD have
the least in common here, so I have not concerned myself with
compatibility.
 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
 1.1.1.6  18-Nov-2005  skrll Import FreeBSD's net80211(9) of 1-nov-2005
 1.1.1.5  26-Jul-2005  dyoung Import FreeBSD's net80211(9) of 2005-07-11
 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.
 1.16.2.8  11-Dec-2005  christos Sync with head.
 1.16.2.7  10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.16.2.6  04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.16.2.5  17-Jan-2005  skrll Sync with HEAD.
 1.16.2.4  21-Sep-2004  skrll Fix the sync with head I botched.
 1.16.2.3  18-Sep-2004  skrll Sync with HEAD.
 1.16.2.2  03-Aug-2004  skrll Sync with HEAD
 1.16.2.1  23-Jul-2004  skrll file ieee80211_ioctl.c was added on branch ktrace-lwp on 2004-08-03 10:54:21 +0000
 1.17.4.1  19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.17.2.1  29-Apr-2005  kent sync with -current
 1.20.2.6  11-Feb-2008  yamt sync with head.
 1.20.2.5  07-Dec-2007  yamt sync with head
 1.20.2.4  03-Sep-2007  yamt sync with head.
 1.20.2.3  26-Feb-2007  yamt sync with head.
 1.20.2.2  30-Dec-2006  yamt sync with head.
 1.20.2.1  21-Jun-2006  yamt sync with head.
 1.25.6.1  22-Nov-2005  yamt sync with head.
 1.26.2.3  01-Mar-2006  yamt sync with head.
 1.26.2.2  01-Feb-2006  yamt sync with head.
 1.26.2.1  15-Jan-2006  yamt sync with head.
 1.28.4.2  01-Jun-2006  kardel Sync with head.
 1.28.4.1  22-Apr-2006  simonb Sync with head.
 1.28.2.1  09-Sep-2006  rpaulo sync with head
 1.30.6.2  24-May-2006  tron Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
 1.30.6.1  28-Mar-2006  tron Merge 2006-03-28 NetBSD-current into the "peter-altq" branch.
 1.30.4.4  06-May-2006  christos - Move kauth_cred_t declaration to <sys/types.h>
- Cleanup struct ucred; forward declarations that are unused.
- Don't include <sys/kauth.h> in any header, but include it in the c files
that need it.

Approved by core.
 1.30.4.3  19-Apr-2006  elad sync with head.
 1.30.4.2  10-Mar-2006  elad generic_authorize() -> kauth_authorize_generic().
 1.30.4.1  08-Mar-2006  elad Adapt to kernel authorization KPI.
 1.30.2.4  11-Aug-2006  yamt sync with head
 1.30.2.3  26-Jun-2006  yamt sync with head.
 1.30.2.2  24-May-2006  yamt sync with head.
 1.30.2.1  01-Apr-2006  yamt sync with head.
 1.32.2.1  19-Jun-2006  chap Sync with head.
 1.35.2.1  13-Jul-2006  gdamore Merge from HEAD.
 1.39.4.2  10-Dec-2006  yamt sync with head.
 1.39.4.1  22-Oct-2006  yamt sync with head
 1.39.2.2  12-Jan-2007  ad Sync with head.
 1.39.2.1  18-Nov-2006  ad Sync with head.
 1.44.2.1  12-Mar-2007  rmind Sync with HEAD.
 1.45.4.1  11-Jul-2007  mjf Sync with head.
 1.45.2.1  09-Jun-2007  ad Sync with head.
 1.46.14.2  18-Feb-2008  mjf Sync with HEAD.
 1.46.14.1  08-Dec-2007  mjf Sync with HEAD.
 1.46.8.2  23-Mar-2008  matt sync with HEAD
 1.46.8.1  09-Jan-2008  matt sync with HEAD
 1.46.6.1  03-Dec-2007  joerg Sync with HEAD.
 1.48.6.2  17-Jan-2009  mjf Sync with HEAD.
 1.48.6.1  02-Jun-2008  mjf Sync with HEAD.
 1.48.4.1  22-Feb-2008  skrll Beginning of a sync with net80211 from FreeBSD. Lots to do.

Sources taken from 2008-02-22.
 1.49.12.2  28-Apr-2009  skrll Sync with HEAD.
 1.49.12.1  19-Jan-2009  skrll Sync with HEAD.
 1.49.10.1  13-Dec-2008  haad Update haad-dm branch to haad-dm-base2.
 1.49.4.1  04-May-2009  yamt sync with head.
 1.51.2.1  13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.54.6.1  06-Jun-2011  jruoho Sync with HEAD.
 1.54.4.1  21-Apr-2011  rmind sync with head
 1.55.2.1  23-Jun-2011  cherry Catchup with rmind-uvmplock merge.
 1.56.6.1  18-Feb-2012  mrg merge to -current.
 1.56.2.2  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")
 1.56.2.1  17-Apr-2012  yamt sync with head
 1.57.10.1  18-May-2014  rmind sync with head
 1.57.6.2  03-Dec-2017  jdolecek update from HEAD
 1.57.6.1  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.59.6.1  22-Sep-2015  skrll Sync with HEAD
 1.60.18.10  27-Apr-2020  nat Pass the error through to the hardware to initialize.
 1.60.18.9  13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.60.18.8  10-Jun-2019  christos Sync with HEAD
 1.60.18.7  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.
 1.60.18.6  03-Aug-2018  phil State Save:
Scanning works, can see the broadcasts and stations.
Association appears to work. (open networks only, no encryption yet.)
IP traffic doesn't flow yet, not sure where the error is.
Added back more NetBSD ioctls not in the FreeBSD code. Still have
more to go.
Updated my TESTWIFI kernel config.
 1.60.18.5  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.
 1.60.18.4  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.
 1.60.18.3  16-Jul-2018  phil State save.
urtwn now can attach and shows up in the "ifconfig -a" list.
 1.60.18.2  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.
 1.60.18.1  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].
 1.60.16.8  22-Jan-2019  pgoyette Convert the MODULE_{,VOID_}HOOK_CALL macros to do everything in-line
rather than defining an intermediate hook##call function. Almost
all of the hooks are called only once, and although we lose the
ability of doing things like

if (MODULE_HOOK_CALL(...) == 0) ...

we simplify things quite a bit. With this change, we no longer need
to have both declaration and definition macros, and the definition
no longer needs to have both prototype argument list and a "real"
argument list.

FWIW, the above if now needs to written as

int ret;

MODULE_HOOK_CALL(..., ret);
if (ret == 0) ...

with appropriate use of braces {}.
 1.60.16.7  18-Jan-2019  pgoyette Don't restrict hooks to having only int or void types. Pass the hook's
type to the various macros, as needed.

Allows us to reduce diffs to original in at least one or two places (we
no longer have to provide an additional parameter to the hook routine
for returning a non-int return value).
 1.60.16.6  14-Jan-2019  pgoyette Create a variant of the HOOK macros that handles hook routines of
type void, and use them where appropriate.
 1.60.16.5  13-Jan-2019  pgoyette Remove the HOOK2 versions of the MODULE_HOOK macros. There were
only a few uses, and using them led to some lack of clarity in the
code. Instead, we now use two separate hooks, with names that
make it clear(er) what we're doing.

This also positions us to start unraveling some of the rtsock_50
mess, which will need (at least) five hooks.
 1.60.16.4  29-Sep-2018  pgoyette In MODULE_HOOK_CALL_DECL we don't need to provide the actual argument
list for calling the hook function, nor do we need to provide the
default value (for when the hook has not been set).
 1.60.16.3  21-Sep-2018  pgoyette Adapt the ieee80211_20 code to the new MP-safe mechanism
 1.60.16.2  30-Mar-2018  pgoyette Create and build the compat_20 module
 1.60.16.1  28-Mar-2018  pgoyette No need to make the #include conditional; the included file contains
all required conditions.
 1.67.12.1  01-Aug-2021  thorpej Sync with HEAD.

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