Commit Graph

91 Commits

Author SHA1 Message Date
Rui Paulo
9ac01d39ad Add multicast key search support. This fixes corrupted mcast packets
when we have more than one hostap vap.

Submitted by:	Russell Yount <russell.yount at gmail.com>
MFC after:	2 weeks
2010-02-08 20:23:20 +00:00
Sam Leffler
fe0dd78965 track whether any mesh vaps are present to correctly setup the rx filter
when, for example, an ap vap is created first

Reviewed by:	rpaulo
Approved by:	re (kib)
2009-07-21 19:01:04 +00:00
Rui Paulo
59aa14a91d Implementation of the upcoming Wireless Mesh standard, 802.11s, on the
net80211 wireless stack. This work is based on the March 2009 D3.0 draft
standard. This standard is expected to become final next year.
This includes two main net80211 modules, ieee80211_mesh.c
which deals with peer link management, link metric calculation,
routing table control and mesh configuration and ieee80211_hwmp.c
which deals with the actually routing process on the mesh network.
HWMP is the mandatory routing protocol on by the mesh standard, but
others, such as RA-OLSR, can be implemented.

Authentication and encryption are not implemented.

There are several scripts under tools/tools/net80211/scripts that can be
used to test different mesh network topologies and they also teach you
how to setup a mesh vap (for the impatient: ifconfig wlan0 create
wlandev ... wlanmode mesh).

A new build option is available: IEEE80211_SUPPORT_MESH and it's enabled
by default on GENERIC kernels for i386, amd64, sparc64 and pc98.

Drivers that support mesh networks right now are: ath, ral and mwl.

More information at: http://wiki.freebsd.org/WifiMesh

Please note that this work is experimental. Also, please note that
bridging a mesh vap with another network interface is not yet supported.

Many thanks to the FreeBSD Foundation for sponsoring this project and to
Sam Leffler for his support.
Also, I would like to thank Gateworks Corporation for sending me a
Cambria board which was used during the development of this project.

Reviewed by:	sam
Approved by:	re (kensmith)
Obtained from:	projects/mesh11s
2009-07-11 15:02:45 +00:00
Sam Leffler
3c3e9d336d Add HAL_RX_FILTER_BSSID support (to disable bssid match):
o add HAL_CAP_BSSIDMATCH to identify parts that have the support for
  disabling bssid match
o honor capability for set/get rx filter
o use HAL_CAP_BSSIDMATCH in driver to decide whether to use the bssid
  match disable or fall back to promisc mode

Reviewed by:	rpaulo
Approved by:	re (rwatson)
2009-06-27 20:06:56 +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
Sam Leffler
293d484820 remove unused struct member 2009-04-08 16:12:28 +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
584f7327f1 Remove ATH_SUPPORT_TDMA and use IEEE80211_SUPPORT_TDMA instead. It
doesn't make much sense to configure driver support w/o net80211.
Note this means ath now depends on opt_wlan.h.
2009-03-30 19:23:49 +00:00
Sam Leffler
c4d3fad2ec purge hal abi support; now that the hal is merged w/ the driver
we cannot be out of sync

MFC after:	1 week
2009-03-19 19:29:10 +00:00
Sam Leffler
2e986da5f1 replace if_watchdog w/ private callout; probably can merge this with the
calibration work sometime in the future
2009-03-09 23:10:19 +00:00
Sam Leffler
9c859a041a add a sysctl to ena/dis frobbing cca 2009-03-05 00:15:43 +00:00
Sam Leffler
869ff02ebe 5416 and later parts mux the gpio outputs; extend the api to include
a signal type that's used to select the appropriate mux
2009-02-24 00:12:16 +00:00
Sam Leffler
d497b6a449 remove private support for IEEE80211_MODE_HALF and IEEE80211_MODE_QUARTER
now that net80211 has them
2009-02-19 05:22:40 +00:00
Sam Leffler
59efa8b517 Overhaul regulatory support:
o remove HAL_CHANNEL; convert the hal to use net80211 channels; this
  mostly involves mechanical changes to variable names and channel
  attribute macros
o gut HAL_CHANNEL_PRIVATE as most of the contents are now redundant
  with the net80211 channel available
o change api for ath_hal_init_channels: no more reglass id's, no more outdoor
  indication (was a noop), anM contents
o add ath_hal_getchannels to have the hal construct a channel list without
  altering runtime state; this is used to retrieve the calibration list for
  the device in ath_getradiocaps
o add ath_hal_set_channels to take a channel list and regulatory data from
  above and construct internal state to match (maps frequencies for 900MHz
  cards, setup for CTL lookups, etc)
o compact the private channel table: we keep one private channel
  per frequency instead of one per HAL_CHANNEL; this gives a big
  space savings and potentially improves ani and calibration by
  sharing state (to be seen; didn't see anything in testing); a new config
  option AH_MAXCHAN controls the table size (default to 96 which
  was chosen to be ~3x the largest expected size)
o shrink ani state and change to mirror private channel table (one entry per
  frequency indexed by ic_devdata)
o move ani state flags to private channel state
o remove country codes; use net80211 definitions instead
o remove GSM regulatory support; it's no longer needed now that we
  pass in channel lists from above
o consolidate ADHOC_NO_11A attribute with DISALLOW_ADHOC_11A
o simplify initial channel list construction based on the EEPROM contents;
  we preserve country code support for now but may want to just fallback
  to a WWR sku and dispatch the discovered country code up to user space
  so the channel list can be constructed using the master regdomain tables
o defer to net80211 for max antenna gain
o eliminate sorting of internal channel table; now that we use ic_devdata
  as an index, table lookups are O(1)
o remove internal copy of the country code; the public one is sufficient
o remove AH_SUPPORT_11D conditional compilation; we always support 11d
o remove ath_hal_ispublicsafetysku; not needed any more
o remove ath_hal_isgsmsku; no more GSM stuff
o move Conformance Test Limit (CTL) state from private channel to a lookup
  using per-band pointers cached in the private state block
o remove regulatory class id support; was unused and belongs in net80211
o fix channel list construction to set IEEE80211_CHAN_NOADHOC,
  IEEE80211_CHAN_NOHOSTAP, and IEEE80211_CHAN_4MSXMIT
o remove private channel flags CHANNEL_DFS and CHANNEL_4MS_LIMIT; these are
  now set in the constructed net80211 channel
o store CHANNEL_NFCREQUIRED (Noise Floor Required) channel attribute in one
  of the driver-private flag bits of the net80211 channel
o move 900MHz frequency mapping into the hal; the mapped frequency is stored
  in the private channel and used throughout the hal (no more mapping in the
  driver and/or net80211)
o remove ath_hal_mhz2ieee; it's no longer needed as net80211 does the
  calculation and available in the net80211 channel
o change noise floor calibration logic to work with compacted private channel
  table setup; this may require revisiting as we no longer can distinguish
  channel attributes (e.g. 11b vs 11g vs turbo) but since the data is used
  only to calculate status data we can live with it for now
o change ah_getChipPowerLimits internal method to operate on a single channel
  instead of all channels in the private channel table
o add ath_hal_gethwchannel to map a net80211 channel to a h/w frequency
  (always the same except for 900MHz channels)
o add HAL_EEBADREG and HAL_EEBADCC status codes to better identify regulatory
  problems
o remove CTRY_DEBUG and CTRY_DEFAULT enum's; these come from net80211 now
o change ath_hal_getwirelessmodes to really return wireless modes supported
  by the hardware (was previously applying regulatory constraints)
o return channel interference status with IEEE80211_CHANSTATE_CWINT (should
  change to a callback so hal api's can take const pointers)
o remove some #define's no longer needed with the inclusion of
  <net80211/_ieee80211.h>

Sponsored by:   Carlson Wireless
2009-01-28 18:00:22 +00:00
Sam Leffler
10ad9a77f3 TDMA support for long distance point-to-point links using ath devices:
o add net80211 support for a tdma vap that is built on top of the
  existing adhoc-demo support
o add tdma scheduling of frame transmission to the ath driver; it's
  conceivable other devices might be capable of this too in which case
  they can make use of the 802.11 protocol additions etc.
o add minor bits to user tools that need to know: ifconfig to setup and
  configure, new statistics in athstats, and new debug mask bits

While the architecture can support >2 slots in a TDMA BSS the current
design is intended (and tested) for only 2 slots.

Sponsored by:	Intel
2009-01-08 17:12:47 +00:00
Sam Leffler
2dc7fcc48f New periodic calibration scheme needed for 11n parts that have
multiple algorithms and potentially collect multiple samples.
Instead of a single calibration interval we now have short and long
intervals; the long interval roughly corresponds to the previous
single interval.  The short interval is used to speedup collection
of samples and happens much quicker.  We make calls using the short
interval until we're told the calibration work is complete at which
point we fallback to the long interval.  In addition there is a
much longer reset interval used to flush all calibration state and
cause everthing to start anew.

With these changes you can also disable calibration entirely by
setting the long interval to zero.
2008-12-07 19:26:34 +00:00
Sam Leffler
3364462355 Switch to ath hal source code. Note this removes the ath_hal
module; the ath module now brings in the hal support.  Kernel
config files are almost backwards compatible; supplying

device ath_hal

gives you the same chip support that the binary hal did but you
must also include

options AH_SUPPORT_AR5416

to enable the extended format descriptors used by 11n parts.
It is now possible to control the chip support included in a
build by specifying exactly which chips are to be supported
in the config file; consult ath_hal(4) for information.
2008-12-01 16:53:01 +00:00
Sam Leffler
9c4fc1e8a2 nuke special handling of RXORN interrupt; the hal marks the FATAL
bit in the interrupt status when RXORN is hit and the chip requires
a reset so our special handling was causing useless resets
2008-11-24 01:31:10 +00:00
Sam Leffler
411373ebc6 prepare for a new hal 2008-10-27 18:30:33 +00:00
Sam Leffler
46d4d74c94 o With the addition of HT rates the set of h/w codes has a much wider range
making the use of sc_hwmap to do direct mapping impractical.  Switch to
  indexing by the rate index instead of the rate code and adjust associated
  state and logic appropriately.  This has several benefits including
  simplification of the led code.
o fix radiotap capture of HT rates
o fix conditional compilation of HT radiotap support to be based on the
  hal having 5416 support; not the ABI version as hal builds may or may
  not include 5416 support
2008-10-27 18:22:44 +00:00
Sam Leffler
84784be1ae Fixup statistics:
o update tx rssi data only when an ACK was received
o return tx rssi from sampled data instead of the last frame
o track noise floor
o return rx rssi and noise floor (was broken)
2008-10-27 17:51:24 +00:00
Sam Leffler
577eaa6032 add sys.dev.ath.X.intmit knob to enable/disable ANI
(the intmit name is historical)
2008-10-27 17:22:46 +00:00
Sam Leffler
80c07f2369 rename bf_flags to bf_txflags in preparation for the addition of flags
separate from the tx descriptor flags currently recorded
2008-10-27 17:16:46 +00:00
Sam Leffler
c62362cbec remove driver-private equivalent of ni_txparms; it's now superfluous 2008-10-27 17:03:24 +00:00
Sam Leffler
90dce2467e fix memory smash on lp64 platforms; mostly noticeable in user mode
as being unable to associate
2008-09-21 00:28:54 +00:00
Rui Paulo
3a6fcf1067 Update for new HAL.
Reviewed by:	sam
2008-09-09 16:21:25 +00:00
Sam Leffler
d3ac945bb4 Cleanup power handling and fix suspend/resume:
o do not put the chip into full sleep in ath_stop as it gains
  nothing and causes many parts to hang in ath_detach because we
  may touch the chip during vap teardown; this may also fix issues
  with unloading the module
o add a note in ath_detach to explain ath_hal_detach puts the
  chip in low power mode; this is useful to know as it means
  unloading the module will place a pci device in the lowest
  possible power state
o leave an #ifdef notyet marker for powering down the chip when
  a device is marked down; we can't do that until we handle all
  the ways the driver may be entered and touch the chip
o fix resume by reloading the h/w key cache as it's been clobbered
  (for pci) by the socket being powered off; for station mode we
  directly stop+init the chip and then simulate a beacon miss to
  get the upper layers sync'd up; for other configs we must brute
  force stop+start the vaps so they go through the state machine
2008-05-29 00:10:48 +00:00
Sam Leffler
ca8769184c add back sysctl's to display the regdomain and country code from eeprom;
useful for debugging
2008-05-03 21:52:05 +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
Sam Leffler
68e8e04e93 Update 802.11 wireless support:
o major overhaul of the way channels are handled: channels are now
  fully enumerated and uniquely identify the operating characteristics;
  these changes are visible to user applications which require changes
o make scanning support independent of the state machine to enable
  background scanning and roaming
o move scanning support into loadable modules based on the operating
  mode to enable different policies and reduce the memory footprint
  on systems w/ constrained resources
o add background scanning in station mode (no support for adhoc/ibss
  mode yet)
o significantly speedup sta mode scanning with a variety of techniques
o add roaming support when background scanning is supported; for now
  we use a simple algorithm to trigger a roam: we threshold the rssi
  and tx rate, if either drops too low we try to roam to a new ap
o add tx fragmentation support
o add first cut at 802.11n support: this code works with forthcoming
  drivers but is incomplete; it's included now to establish a baseline
  for other drivers to be developed and for user applications
o adjust max_linkhdr et. al. to reflect 802.11 requirements; this eliminates
  prepending mbufs for traffic generated locally
o add support for Atheros protocol extensions; mainly the fast frames
  encapsulation (note this can be used with any card that can tx+rx
  large frames correctly)
o add sta support for ap's that beacon both WPA1+2 support
o change all data types from bsd-style to posix-style
o propagate noise floor data from drivers to net80211 and on to user apps
o correct various issues in the sta mode state machine related to handling
  authentication and association failures
o enable the addition of sta mode power save support for drivers that need
  net80211 support (not in this commit)
o remove old WI compatibility ioctls (wicontrol is officially dead)
o change the data structures returned for get sta info and get scan
  results so future additions will not break user apps
o fixed tx rate is now maintained internally as an ieee rate and not an
  index into the rate set; this needs to be extended to deal with
  multi-mode operation
o add extended channel specifications to radiotap to enable 11n sniffing

Drivers:
o ath: add support for bg scanning, tx fragmentation, fast frames,
       dynamic turbo (lightly tested), 11n (sniffing only and needs
       new hal)
o awi: compile tested only
o ndis: lightly tested
o ipw: lightly tested
o iwi: add support for bg scanning (well tested but may have some
       rough edges)
o ral, ural, rum: add suppoort for bg scanning, calibrate rssi data
o wi: lightly tested

This work is based on contributions by Atheros, kmacy, sephe, thompsa,
mlaier, kevlo, and others.  Much of the scanning work was supported by
Atheros.  The 11n work was supported by Marvell.
2007-06-11 03:36:55 +00:00
Sam Leffler
515d617e8d update copyrights to 2007 and convert to be 2-clause bsd-only 2007-06-06 15:49:16 +00:00
Sam Leffler
1fba0fdc15 Change mtx's to use the formulated name as type so witness does not
complain on nested tx q lock acquisitions when processing the cab q.

MFC after:	2 weeks
2007-03-05 21:56:33 +00:00
Sam Leffler
8debcae44f set the antenna switch when fixing the tx antenna using the
dev.ath.X.txantenna sysctl; this is typically what folks
want but beware this has the side effect of disabling rx
diversity

MFC after:	2 weeks
2007-02-24 23:12:58 +00:00
Sam Leffler
c5bebabde1 add compat shim for ath_hal_isgsmsku until the new hal gets committed 2007-01-15 04:26:19 +00:00
Sam Leffler
724c193aed Add initial support for 900MHz cards like the Ubiquiti SR9:
o eliminate assumptions that half/quarter rate channels on exist in 11a
o handle frequency mapping between hal and net80211; hal gives us freq's
  in the range 2422..2437 that we remap

MFC after:	1 month
2007-01-15 01:15:57 +00:00
Sam Leffler
aaa70f2f6f Add half/quarter rate 11a channel support:
o change handling of regdomain-related mib knobs so they can be set
  post-attach: regdomain, countrycode, outdoor, and xchanmode; the
  hal will not permit changing the regdomain but we expose it for now
o on regdomain/countrycode change recalculate the channel list and
  push it to the net80211 layer (NB: looks to need more tweaking)
o setup rate tables for half/quarter rate channels
o honor half/quarter rate channel configs when changing channels
o honor half/quarter rate channel configs when setting the slot time
o use hack/nonstandard channel numbering scheme for the public safety
  band to avoid overlapping 2.4G channels on dual-band cards
o remove setup of ic_sup_rates; the net80211 layer can do this for us
  and it simplifies handling of half/quarter rate channels

Tested only in Public Safety Band with cards that have RF5112.
2006-12-27 19:07:09 +00:00
Sam Leffler
65f9edeee1 Track v0.9.20.3 hal:
o no more ds_vdata in tx/rx descriptors
o split h/w tx/rx descriptor from s/w status
o as part of the descriptor split change the rate control module api
  so the ath_buf is passed in to the module so it can fetch both
  descriptor and status information as needed
o add some const poisoning

Also for sample rate control algorithm:

o split debug msgs (node, rate, any)
o uniformly bounds check rate indices (and in some cases correct checks)
o move array index ops to after bounds checking
o use final tsi from the status block instead of the h/w descriptor
o replace h/w descriptor struct's with proper mask+shift defs (this
  doesn't belong here; everything is known by the driver and should
  just be sent down so there's no h/w-specific knowledge)

MFC after:	1 month
2006-12-13 19:34:35 +00:00
Sam Leffler
10b6de5e58 correct diag request to fetch isr state on fatal interrupts
MFC after:	1 week
2006-10-09 23:45:26 +00:00
Sam Leffler
5901d2d38a Add support for newer parts that do not require separate keycache
entries for tx+rx mic keys.  This requires a newer hal, but works
fine with the current hal in cvs.

MFC after:	2 weeks
2006-09-18 16:26:19 +00:00
Sam Leffler
a7ee023101 remove stub radar support; it's never been used and future
hal's will not include the calls (due to redesign)

MFC after:	1 week
2006-09-18 16:16:02 +00:00
Warner Losh
1a3c917f9d while (0); -> while (0) in multi-line macros 2006-08-17 22:50:33 +00:00
Sam Leffler
622b3fd21c Close race in handling mcast traffic when operating as an ap with
stations in power save: add a new q where mcast frames are stashed
and on beacon update (at DTIM) move frames from the mcast q to the
cabq and start it.  This ensures the cabq is only manipulated in
one place.

Sponsored by:	Hobnob
MFC after:	2 weeks
2006-06-26 03:10:45 +00:00
Sam Leffler
f9fc583f17 move hal bus+tag externalization to the bus glue code where it belongs;
this is a noop on all current freebsd architectures

MFC after:	1 month
2006-06-05 17:51:20 +00:00
Sam Leffler
1b409765cf correct type
MFC after:	2 weeks
2006-05-05 03:21:13 +00:00
Sam Leffler
ebecf80294 backout 1.136 until we can resolve report that it causes output to stall 2006-02-27 17:20:23 +00:00
Sam Leffler
8fe92b6cf6 fix a race whereby a tx descriptor might get reused before the hardware
is finished with it; this may only occur when the tx queue is setup as
dba-gated but since the fix is cheap apply it to all queues

while here make the queue depth signed for use in assertions

Reviewed by:	apatti
MFC after:	2 weeks
2006-02-24 23:10:08 +00:00
Sam Leffler
16c8acaab5 o handle fatal errors directly instead of via the task queue
o temporarily dump some h/w state for diagnosis; this will be
  removed once some issues are resolved

MFC after:	2 weeks
2006-02-15 18:23:03 +00:00
Sam Leffler
bd5a9920c2 Update for rev 0.9.16.16 hal:
o add dfs+radar hooks; DFS is presently disabled in the hal
o channel and mode handling changes
o various api changes
o be more aggressive about iq calibration settling so ap mode
  operation is better immediately after startup
o rfkill/rfsilent sysctl support
o tpc ack/cts sysctl support

MFC after:	2 weeks
2006-02-10 19:07:08 +00:00
Sam Leffler
80d939bfba Beacon timer setup fixes:
o pull nexttbtt forward in adhoc mode too
o resync beacon timers on joining a bss or ibss as the tstamp we
  collected while scanning is almost certainly out of date

Note we may need to refine the ibss mode check in ath_recv_mgmt.

Reviewed by:	avatar, dyoung
Obtained from:	atheros
MFC after:	2 weeks
2006-02-09 22:21:53 +00:00
Sam Leffler
d7736e139e Phantom beacon miss workaround: track the tsf of the last received
frame and if we get a beacon miss interrupt ignore it if we've received
a frame within the beacon miss interval.  This should never trigger
and the handling at the net80211 layer should likewise deal with this
but it doesn't hurt and can suppress extranous probe request frames.
Note that we can legtimately get a bmiss when under heavy load.

MFC after:	2 weeks
2006-02-09 22:03:26 +00:00