Commit Graph

104 Commits

Author SHA1 Message Date
Pedro F. Giffuni
453130d9bf sys/dev: minor spelling fixes.
Most affect comments, very few have user-visible effects.
2016-05-03 03:41:25 +00:00
Andriy Voskoboinyk
a061fea6ee net80211 + drivers: hide size of 'bands' array behind a macro.
Auto-replace 'howmany(IEEE80211_MODE_MAX, 8)' with 'IEEE80211_MODE_BYTES'.
No functional changes.
2016-04-29 22:14:11 +00:00
Andriy Voskoboinyk
0046e1868f net80211 drivers: fix ieee80211_init_channels() usage
Fix out-of-bounds read (all) / write (11n capable) for drivers
that are using ieee80211_init_channels() to initialize channel list.

Tested with:
 * RTL8188EU, STA mode.
 * RTL8188CUS, STA mode.
 * WUSB54GC, HOSTAP mode.

Approved by:	adrian (mentor)
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D4818
2016-01-07 18:41:03 +00:00
Andriy Voskoboinyk
a14954c5d6 net80211: WME callback cleanup in various drivers
Since r288350, ic_wme_task() is called via ieee80211_runtask(),
so, any additional deferring from the driver side is not needed.

Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D4072
2015-11-05 17:58:18 +00:00
Adrian Chadd
d6166def28 net80211 & wireless drivers: remove duplicate defines (noop)
* IEEE80211_DIR_DSTODS(wh) -> IEEE80211_IS_DSTODS(wh).
* N(a) -> nitems(a).
* Remove LE_READ_2(p)/LE_READ_4(p) definitions (and include ieee80211_input.h instead).
* <drvname>_TXOP_TO_US(txop) -> IEEE80211_TXOP_TO_US(txop).
* Put IEEE80211_RV(v) into ieee80211_proto.h and remove local RV(v) definitions.

Submitted by:	Andriy Voskoboinyk <s3erios@gmail.com>
Differential Revision:	https://reviews.freebsd.org/D3705
2015-09-22 02:44:59 +00:00
Gleb Smirnoff
7a79cebfba Replay r286410. Change KPI of how device drivers that provide wireless
connectivity interact with the net80211 stack.

Historical background: originally wireless devices created an interface,
just like Ethernet devices do. Name of an interface matched the name of
the driver that created. Later, wlan(4) layer was introduced, and the
wlanX interfaces become the actual interface, leaving original ones as
"a parent interface" of wlanX. Kernelwise, the KPI between net80211 layer
and a driver became a mix of methods that pass a pointer to struct ifnet
as identifier and methods that pass pointer to struct ieee80211com. From
user point of view, the parent interface just hangs on in the ifconfig
list, and user can't do anything useful with it.

Now, the struct ifnet goes away. The struct ieee80211com is the only
KPI between a device driver and net80211. Details:

- The struct ieee80211com is embedded into drivers softc.
- Packets are sent via new ic_transmit method, which is very much like
  the previous if_transmit.
- Bringing parent up/down is done via new ic_parent method, which notifies
  driver about any changes: number of wlan(4) interfaces, number of them
  in promisc or allmulti state.
- Device specific ioctls (if any) are received on new ic_ioctl method.
- Packets/errors accounting are done by the stack. In certain cases, when
  driver experiences errors and can not attribute them to any specific
  interface, driver updates ic_oerrors or ic_ierrors counters.

Details on interface configuration with new world order:
- A sequence of commands needed to bring up wireless DOESN"T change.
- /etc/rc.conf parameters DON'T change.
- List of devices that can be used to create wlan(4) interfaces is
  now provided by net.wlan.devices sysctl.

Most drivers in this change were converted by me, except of wpi(4),
that was done by Andriy Voskoboinyk. Big thanks to Kevin Lo for testing
changes to at least 8 drivers. Thanks to pluknet@, Oliver Hartmann,
Olivier Cochard, gjb@, mmoll@, op@ and lev@, who also participated in
testing.

Reviewed by:	adrian
Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2015-08-27 08:56:39 +00:00
Adrian Chadd
ba2c1fbc03 Revert the wifi ifnet changes until things are more baked and tested.
* 286410
* 286413
* 286416

The initial commit broke a variety of debug and features that aren't
in the GENERIC kernels but are enabled in other platforms.
2015-08-08 01:10:17 +00:00
Gleb Smirnoff
79d2c5e857 Change KPI of how device drivers that provide wireless connectivity interact
with the net80211 stack.

Historical background: originally wireless devices created an interface,
just like Ethernet devices do. Name of an interface matched the name of
the driver that created. Later, wlan(4) layer was introduced, and the
wlanX interfaces become the actual interface, leaving original ones as
"a parent interface" of wlanX. Kernelwise, the KPI between net80211 layer
and a driver became a mix of methods that pass a pointer to struct ifnet
as identifier and methods that pass pointer to struct ieee80211com. From
user point of view, the parent interface just hangs on in the ifconfig
list, and user can't do anything useful with it.

Now, the struct ifnet goes away. The struct ieee80211com is the only
KPI between a device driver and net80211. Details:

- The struct ieee80211com is embedded into drivers softc.
- Packets are sent via new ic_transmit method, which is very much like
  the previous if_transmit.
- Bringing parent up/down is done via new ic_parent method, which notifies
  driver about any changes: number of wlan(4) interfaces, number of them
  in promisc or allmulti state.
- Device specific ioctls (if any) are received on new ic_ioctl method.
- Packets/errors accounting are done by the stack. In certain cases, when
  driver experiences errors and can not attribute them to any specific
  interface, driver updates ic_oerrors or ic_ierrors counters.

Details on interface configuration with new world order:
- A sequence of commands needed to bring up wireless DOESN"T change.
- /etc/rc.conf parameters DON'T change.
- List of devices that can be used to create wlan(4) interfaces is
  now provided by net.wlan.devices sysctl.

Most drivers in this change were converted by me, except of wpi(4),
that was done by Andriy Voskoboinyk. Big thanks to Kevin Lo for testing
changes to at least 8 drivers. Thanks to Olivier Cochard, gjb@, mmoll@,
op@ and lev@, who also participated in testing. Details here:

https://wiki.freebsd.org/projects/ifnet/net80211

Still, drivers: ndis, wtap, mwl, ipw, bwn, wi, upgt, uath were not
tested. Changes to mwl, ipw, bwn, wi, upgt are trivial and chances
of problems are low. The wtap wasn't compilable even before this change.
But the ndis driver is complex, and it is likely to be broken with this
commit. Help with testing and debugging it is appreciated.

Differential Revision:	D2655, D2740
Sponsored by:	Nginx, Inc.
Sponsored by:	Netflix
2015-08-07 11:43:14 +00:00
Gleb Smirnoff
6468c41303 Make the last revision compilable.
Remove extra argument from iwi_wme_setparams(), a softc has 1 to 1
accordance with ieee80211com.
2015-06-02 22:45:28 +00:00
Gleb Smirnoff
405c7166ef The argument passed to the iwi_update_wme() is softc, not ieee80211com.
This fatal mismatch appeared to be absolutely harmless, since both structs
have pointer to struct ifnet as their first member, and they both point to
the same ifnet.  And the first member is the only one used from the argument.
2015-06-02 22:39:16 +00:00
Gleb Smirnoff
59686fe935 Set ic_softc in all 802.11 drivers. Not required right now, but will be
used quite soon.

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2015-05-25 18:50:26 +00:00
Gleb Smirnoff
c8550c0278 Make net80211 drivers supply their device name to the net80211 layer, so
that the latter doesn't need to go through struct ifnet to get their name.

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2015-05-25 13:51:13 +00:00
Gleb Smirnoff
c8dfaf382f Mechanically convert to if_inc_counter(). 2014-09-19 03:51:26 +00:00
Eitan Adler
1c90e87fdc Fix sizeof modifier for sizeof() in printf 2014-03-30 00:25:31 +00:00
Adrian Chadd
4982d693ac Add support to export the contents of the notification updates from the firmware.
Right now the NIC isn't actually exporting useful data. I'm not quite sure
why this is. :(
2014-03-29 19:53:04 +00:00
Kevin Lo
5945b5f5ab Rename definition of IEEE80211_FC1_WEP to IEEE80211_FC1_PROTECTED.
The origin of WEP comes from IEEE Std 802.11-1997 where it defines
whether the frame body of MAC frame has been encrypted using WEP
algorithm or not.
IEEE Std. 802.11-2007 changes WEP to Protected Frame, indicates
whether the frame is protected by a cryptographic encapsulation
algorithm.

Reviewed by:	adrian, rpaulo
2014-01-08 08:06:56 +00:00
Marius Strobl
0a9d883977 - Probe with BUS_PROBE_DEFAULT instead of 0.
- Nuke code setting PCI_POWERSTATE_D0; pci(4) already does that for type 0
  devices.
- Use PCIR_BAR instead of a homegrown macro.
- There's no need to keep track of resource IDs.
- Quiesce the interrupt before actually detaching.
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.

MFC after:	1 week
2013-12-29 23:05:01 +00:00
Adrian Chadd
39bb444c76 The bssid can change from underneath us, so take a reference before
we fiddle with it.
2013-11-26 01:30:10 +00:00
Gleb Smirnoff
76039bc84f The r48589 promised to remove implicit inclusion of if_var.h soon. Prepare
to this event, adding if_var.h to files that do need it. Also, include
all includes that now are included due to implicit pollution via if_var.h

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2013-10-26 17:58:36 +00:00
Gleb Smirnoff
c6499eccad Mechanically substitute flags from historic mbuf allocator with
malloc(9) flags in sys/dev.
2012-12-04 09:32:43 +00:00
Bernhard Schmidt
ada977b103 Use suspend/resume methods provided by net80211. This ensures that the
appropriate state handling takes place, not doing so results in the
device doing nothing until manual intervention.

Reviewed by:	iwasaki
Tested by:	iwasaki (iwi)
MFC after:	4 weeks
2012-03-23 19:32:30 +00:00
Mitsuru IWASAKI
7199b6f7ee Fix wrong asresp frame parsing in iwi_checkforqos().
After 8.0-RELEASE, iwi(4) doesn't send any data frames in infrastructure
mode.

Bacause of the condition `while (frm < efrm)', IEEE80211_VERIFY_LENGTH()
was checking item length beyond the ieee80211_frame region, and returned
from iwi_checkforqos() without setting flags, capinfo and associd.

In infrastructure mode associd is required, so this problem causes
discarding mbuf in ieee80211_start().

PR:	kern/165819
Tested/Reviewed/Supported by: bschmidt and adrian
MFC after:	1 week
2012-03-10 17:08:57 +00:00
Bernhard Schmidt
fcd9500f91 Fix some net80211 enum nits:
- ic_vap_create() uses an ieee80211_opmode argument
- ieee80211_rate2media() takes an ieee80211_phymode argument
- ieee80211_plcp2rate() takes an ieee80211_phytype argument
- cast to enum ieee80211_protmode and ieee80211_roamingmode to silence
  compiler warnings

Submitted by:	arundel@
2011-12-17 10:23:17 +00:00
Bernhard Schmidt
129145a426 Add module version to iwi/ipw/wpi and iwn.
The version is used to check if a module is already preset, not setting
it results in:

can't re-use a leaf (ipw)!
module_register: module pci/ipw already exists!
Module pci/ipw failed to register: 17

while trying to load the module due to an entry in loader.conf. With this
commit we get the expected:

module ipw already present!

Reported by:	Dru Lavigne, bz
Tested by:	bz
MFC after:	1 week
2011-05-31 19:08:25 +00:00
Matthew D Fleming
6dc7dc9a3e sysctl(9) cleanup checkpoint: amd64 GENERIC builds cleanly.
Commit the rest of the devices.
2011-01-12 19:53:56 +00:00
Bernhard Schmidt
82510b7eca The firmware does pad notifications to an even number of bytes (at least
the association notification), the included information though always
contains an elem block with an odd number of bytes. We handle the last
byte as if it might contain a whole elem block, this of course is not
true as one byte is not enough to hold a block, we therefore discard the
complete frame. The solution here is to subtract one from the actual
notification length, this is also what the Linux driver does. With this
change the frames ends exactly where the last elem block ends.

This commit also reverts r214160 which is no longer required and now even
wrong.

MFC after:	1 week
2010-10-23 11:26:22 +00:00
Bernhard Schmidt
9f95314538 The firmware always sets bit 14 and 15, to get the real associd we need
to clear those bits.

MFC after:	1 week
2010-10-21 19:30:55 +00:00
Bernhard Schmidt
f3c95fe748 Instead of calling return when reaching the end of the assoc notification
break the loop instead. We want to run the code after the while loop
to set an associd and capinfo. If we don't do this net80211 will drop
frames because it assumes the node has not yet been associated.

MFC after:	1 week
2010-10-21 19:28:52 +00:00
Bernhard Schmidt
40668dc52b Fix monitor mode which is implemented by doing a firmware scan. This
is a port of stable/6, seems like the code got lost during the
background scan changes in r170530.

Pointed out by:	danfe
MFC after:	2 weeks
2010-10-12 16:52:13 +00:00
Maxim Sobolev
e50d35e6c6 Add new tunable 'net.link.ifqmaxlen' to set default send interface
queue length. The default value for this parameter is 50, which is
quite low for many of today's uses and the only way to modify this
parameter right now is to edit if_var.h file. Also add read-only
sysctl with the same name, so that it's possible to retrieve the
current value.

MFC after:	1 month
2010-05-03 07:32:50 +00:00
Rui Paulo
820e6a1f38 For ic_opmode switch cases, provide a default label with a printf saying
this opmode is not supported.

Approved by:	re (kib)
2009-07-10 15:28:33 +00:00
Sam Leffler
07f8bbea05 rssi/nf data are now dbm, tag them accordingly 2009-05-21 15:30:59 +00:00
Sam Leffler
fedda42340 o remove bpf tap call missed in r192468
o correct rssi taken from rx descriptor; need dbm
2009-05-21 15:30:29 +00:00
Sam Leffler
5463c4a485 Overhaul monitor mode handling:
o replace DLT_IEEE802_11 support in net80211 with DLT_IEEE802_11_RADIO
  and remove explicit bpf support from wireless drivers; drivers now
  use ieee80211_radiotap_attach to setup shared data structures that
  hold the radiotap header for each packet tx/rx
o remove rx timestamp from the rx path; it was used only by the tdma support
  for debugging and was mostly useless due to it being 32-bits and mostly
  unavailable
o track DLT_IEEE80211_RADIO bpf attachments and maintain per-vap and
  per-com state when there are active taps
o track the number of monitor mode vaps
o use bpf tap and monitor mode vap state to decide when to collect radiotap
  state and dispatch frames; drivers no longer explicitly directly check
  bpf state or use bpf calls to tap frames
o handle radiotap state updates on channel change in net80211; drivers
  should not do this (unless they bypass net80211 which is almost always
  a mistake)
o update various drivers to be more consistent/correct in handling radiotap
o update ral to include TSF in radiotap'd frames
o add promisc mode callback to wi

Reviewed by:	cbzimmer, rpaulo, thompsa
2009-05-20 20:00:40 +00:00
Andrew Thompson
e1d2045e3f Abort any scan on a fatal firmware. ic_scan_curchan is overridden to perform
the scan in firmware and this relies on the firmware to wake up the scan task
on completion.
2009-05-10 02:44:19 +00:00
Sam Leffler
853569c6ec push wme parameter setting to the taskq thread; the update callback from
net80211 can happen from the ithread and submitting the fw cmd requires
a sleepable context
2009-05-09 19:22:37 +00:00
Andrew Thompson
b569d2132e Drain the tasks before the interface stop call in case a restart was queued. 2009-05-08 13:44:33 +00:00
Andrew Thompson
5efea30f03 Create a taskqueue for each wireless interface which provides a serialised
sleepable context for net80211 driver callbacks. This removes the need for USB
and firmware based drivers to roll their own code to defer the chip programming
for state changes, scan requests, channel changes and mcast/promisc updates.
When a driver callback completes the hardware state is now guaranteed to have
been updated and is in sync with net80211 layer.

This nukes around 1300 lines of code from the wireless device drivers making
them more readable and less race prone.

The net80211 layer has been updated as follows
 - all state/channel changes are serialised on the taskqueue.
 - ieee80211_new_state() always queues and can now be called from any context
 - scanning runs from a single taskq function and executes to completion. driver
   callbacks are synchronous so the channel, phy mode and rx filters are
   guaranteed to be set in hardware before probe request frames are
   transmitted.

Help and contributions from Sam Leffler.

Reviewed by:	sam
2009-05-02 15:14:18 +00:00
Sam Leffler
339ccfb391 Hoist 802.11 encapsulation up into net80211:
o call ieee80211_encap in ieee80211_start so frames passed down to drivers
  are already encapsulated
o remove ieee80211_encap calls in drivers
o fixup wi so it recreates the 802.3 head it requires from the 802.11
  header contents
o move fast-frame aggregation from ath to net80211 (conditional on
  IEEE80211_SUPPORT_SUPERG):
  - aggregation is now done in ieee80211_start; it is enabled when the
    packets/sec exceeds ieee80211_ffppsmin (net.wlan.ffppsmin) and frames
    are held on a staging queue according to ieee80211_ffagemax
    (net.wlan.ffagemax) to wait for a frame to combine with
  - drivers must call back to age/flush the staging queue (ath does this
    on tx done, at swba, and on rx according to the state of the tx queues
    and/or the contents of the staging queue)
  - remove fast-frame-related data structures from ath
  - add ieee80211_ff_node_init and ieee80211_ff_node_cleanup to handle
    per-node fast-frames state (we reuse 11n tx ampdu state)
o change ieee80211_encap calling convention to include an explicit vap
  so frames coming through a WDS vap are recognized w/o setting M_WDS

With these changes any device able to tx/rx 3Kbyte+ frames can use fast-frames.

Reviewed by:	thompsa, rpaulo, avatar, imp, sephe
2009-03-30 21:53:27 +00:00
Sam Leffler
29aca94080 Eliminate ic_myaddr so changing the mac address of a device works correctly:
o remove ic_myaddr from ieee80211com
o change ieee80211_ifattach to take the mac address of the physical device
  and use that to setup the lladdr.
o replace all references to ic_myaddr in drivers by IF_LLADDR
o related cleanups (e.g. kill dead code)

PR:		kern/133178
Reviewed by:	thompsa, rpaulo
2009-03-29 17:59:14 +00:00
Sam Leffler
38c208f876 Change the calling convention for ic_node_alloc to deal with
some longstanding issues:
o pass the vap since it's now the "coin of the realm" and required
  to do things like set initial tx parameters in private node
  state for use prior to association
o pass the mac address as cards that maintain outboard station
  tables require this to create an entry (e.g. in ibss mode)
o remove the node table reference, we only have one node table
  and it's unlikely this will change so this is not needed to
  find the com structure
2008-06-07 18:38:02 +00:00
Sam Leffler
c43feede8b Minor cleanup of vap create work:
o add IEEE80211_C_STA capability to indicate sta mode is supported
  (was previously assumed) and mark drivers as capable
o add ieee80211_opcap array to map an opmode to the equivalent capability bit
o move IEEE80211_C_OPMODE definition to where capabilities are defined so it's
  clear it should be kept in sync (on future additions)
o check device capabilities in clone create before trying to create a vap;
  this makes driver checks unneeded
o make error codes return on failed clone request unique
o temporarily add console printfs on clone request failures to aid in
  debugging; these will move under DIAGNOSTIC or similar before release
2008-05-12 00:15:30 +00:00
Andrew Thompson
31a8c1edd8 Unify all the wifi *_ioctl routines
- Limit grabbing the lock to SIOCSIFFLAGS.
 - Move ieee80211_start_all() to SIOCSIFFLAGS.
 - Remove SIOCSIFMEDIA as it is not useful.
 - Limit ether_ioctl to only SIOCGIFADDR. SIOCSIFADDR and SIOCSIFMTU have no
   affect as there is no input/output path in the vap parent.  The vap code
   will handle the reinit of the mac address changes.
 - Split off ndis_ioctl_80211 as it was getting too different to wired devices.

This fixes a copyout while locked and a lock recursion.

Reviewed by:		sam
2008-05-01 04:55:00 +00:00
Sam Leffler
b032f27c36 Multi-bss (aka vap) support for 802.11 devices.
Note this includes changes to all drivers and moves some device firmware
loading to use firmware(9) and a separate module (e.g. ral).  Also there
no longer are separate wlan_scan* modules; this functionality is now
bundled into the wlan module.

Supported by:	Hobnob and Marvell
Reviewed by:	many
Obtained from:	Atheros (some bits)
2008-04-20 20:35:46 +00:00
Philip Paeps
6c3c35e413 Plug two potential (root-only, local) information leaks. buf is not
initialized before use and returned integrally instead of up to size.

Submitted by:	Ilja van Sprundel <ilja -at- netric.org>
Reviewed by:	secteam
MFC after:	1 day
2007-12-05 19:32:07 +00:00
Julian Elischer
3745c395ec Rename the kthread_xxx (e.g. kthread_create()) calls
to kproc_xxx as they actually make whole processes.
Thos makes way for us to add REAL kthread_create() and friends
that actually make theads. it turns out that most of these
calls actually end up being moved back to the thread version
when it's added. but we need to make this cosmetic change first.

I'd LOVE to do this rename in 7.0  so that we can eventually MFC the
new kthread_xxx() calls.
2007-10-20 23:23:23 +00:00
Sam Leffler
2b9411e29f Add missing bits that made bg scanning lame:
o update ic_lastdata to reflect time of last outbound frame
o outbound traffic must preempt/cancel bg scanning to avoid delays

This stuff was somehow missed in the initial import.

Reviewed by:	thompsa, avatar, sephe (earlier version)
Approved by:	re (blanket wireless)
2007-09-05 23:00:27 +00:00
Andrew Thompson
06035e8252 Remove the lock assert from iwi_newstate, this function does not need the lock
to be held and this will falsely trigger if called from net80211.

Reported by:	Munehiro (haro) Matsuda
Reviewed by:	sam
Approved by:	re (kensmith)
2007-08-29 21:52:03 +00:00
Andrew Thompson
163ee27671 The config.use_protection option can not be used in 802.11b mode and causes a
firmware reset. Also zero out struct iwi_rateset although its not strictly
necessary.

Reported by:	Maxim Konovalov
Reviewed by:	sam
Approved by:	re (bmah)
2007-06-25 20:56:33 +00:00
Andrew Thompson
8d399898ec MFp4 (missed in net80211 megaupdate)
- Use a seperate taskqueue+thread for reset tasks since iwi_ops will
   block.
 - Return from iwi_ops if the interface has been downed
 - The firmware will fail if we are already associated
 - Add myself to the copyright
2007-06-11 10:56:06 +00:00