Commit Graph

310 Commits

Author SHA1 Message Date
imp
a6f1d61f4a Prefer __packed to __attribute__((__packed__)).
OK'd by sam@ months ago...
2007-06-11 19:34:53 +00:00
sam
6a8b18f115 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
d82da159d3 copyright updates:
o update to include 2007
o switch back to a 2-clause bsd-only license

Reviewed by:	onoe
2007-06-06 04:56:04 +00:00
sephe
85b1cff269 - Nuke unnecessary header.
- Make wlan_amrr depend on wlan, so that it can find various symbols in
  wlan module if wlan is not compiled into kernel.

Approved by:	sam (mentor)
Tested by:	kevlo
2007-05-05 11:07:52 +00:00
sam
35a6c17cb8 change ic_modecaps to a bit vector and use setbit, et. al. 2007-03-11 22:37:32 +00:00
sam
afe366517c Update to reflect correct usage:
o leave IEEE80211_RADIOTAP_HDRLEN for portability to other systems but
  correct comment about radiotap headers being padded to 64-bytes
  (hasn't been true for many years)
o remove reference to IEEE80211_RADIOTAP_FCS; it was never used, instead
  the flags are marked with IEEE80211_RADIOTAP_F_FCS to indicate whether
  or not FCS is present

Might be better to just remove IEEE80211_RADIOTAP_HDRLEN so drivers
don't bogusly pad.

MFC after:	2 weeks
2007-03-11 07:42:02 +00:00
sam
63f1cc9c73 change ieee80211_fix_rate to take a rate set instead of using
ni_rates; this lets us re-use the code to check 11n HT rates

MFC after:	2 weeks
2007-03-11 07:22:21 +00:00
sam
a0ffc08348 expose IEEE80211_DISCARD, IEEE80211_DISCARD_IE, and IEEE80211_DISCARD_MAC
so they can be used within net80211 but outside ieee80211_input.c

MFC after:	2 weeks
2007-03-11 07:15:38 +00:00
sam
c8efce1b96 improve debug msg for ie's that are too short
MFC after:	2 weeks
2007-03-11 07:08:04 +00:00
sam
72f9ecd769 keep tx/rx seq #'s for non-QoS traffic separate from QoS; stations
aren't supposed mix traffic but if they did frames might be mis-handled

Obtained from:	Atheros
MFC after:	2 weeks
2007-03-11 07:06:08 +00:00
sam
f159bf3ace split check for rate set mismatch on assoc req away from check
for pure 11g mode so we can give meaningful diagnostic msgs

MFC after:	2 weeks
2007-03-11 06:55:59 +00:00
sam
de9f5f66c4 disallow re-associate with a slot time mismatch
Obtained from:	Atheros
MFC after:	2 weeks
2007-03-11 06:52:22 +00:00
sam
f6283342b1 move __inline before type to appease gcc 4.x
Obtained from:	netbsd
2007-03-11 06:44:51 +00:00
sam
2cf4e10491 white space diff reduction 2007-03-11 06:38:26 +00:00
sam
b04c5bd382 add IEEE80211_KEY_UNDEFINED and use it instead of local defs
Obtained from:	netbsd
2007-03-11 06:36:10 +00:00
sam
679daf8497 discard deauth+disassoc frames that are not destined for us; these
can be received when the interface is in promisc mode

Reviewed by:	sephe
Obtained from:	netbsd
2007-03-11 06:35:27 +00:00
sam
0ea08cfa34 change ieee80211_mhz2ieee to use the PSB mapping when the frequency
falls in the proper place, not when we're handed a 1/2 or 1/4-rate channel

MFC after:	2 weeks
2007-03-11 06:24:26 +00:00
sam
519f61f995 When dispatching frames saved on the power save queue to a
station exiting power save mode prepend them to the driver's
send q instead of appending them.  This insures the packets
are not misordered wrt any packets already q'd for the station.

This corrects a problem noticed when using a VoIP phone talking
to an ath card in ap mode; the misordered packets caused noise.

Submitted by:	"J.R. Oldroyd" <jr@opal.com>
MFC after:	2 weeks
2007-03-07 04:42:22 +00:00
sam
24d9d9d380 add ieee80211_opmode_name array for mapping the opmode to a string
for printing diagnostic msgs

MFC after:	2 weeks
2007-03-07 04:35:07 +00:00
sam
bf24ed1972 when starting up an ibss master use a random address for
the bssid; this is required for wifi alliance compliance

Obtained from:	Atheros
MFC after:	2 weeks
2007-03-07 04:31:49 +00:00
sam
7c030f485b correct inital bounds check on returning scan results; this does not
paper over catching an error as the case was already handled, albeit
in a somewhat surprising way (the caller received zero'd data)

Submitted by:	sephe
MFC after:	2 weeks
2007-03-05 19:12:25 +00:00
sam
369e4f0ba4 correct conversions between TU and ms/ticks; these are not used
by any code in the tree[1] and are close enough for common values
that this change is a noop

[1] ath uses one macro to calculate a value that is not used
Submitted by:	sephe
MFC after:	1 week
2007-03-05 18:52:35 +00:00
sam
9f1eaf60b8 clear/reclaim challenge text when switching auth mode and operating as an ap
Obtained from:	Atheros
2007-02-04 05:49:16 +00:00
sam
fe499355a4 add IEEE80211_IS_CHAN_PASSIVE
MFC after:	1 week
2007-02-02 02:45:33 +00:00
sam
a3a275335d Add initial support for 900MHz cards like the Ubiquiti SR9:
o add channel flag to enable freq <-> ieee channel # mapping (can
  go away in the future when ieee number is precomputed)
o add mapping between 900mhz freq's and channel #'s that gives a
  unique channel # for each half/quarter/full width channel
o remove assumptions that half/quarter rate channels on happen in 11a
o remove assumptions that all 11g channels are full width
o ensure ic_curchan is reset on mode change so changing the channel
  list (e.g. on countrycode change) doesn't leave curchan set to an
  invalid channel

There is still an issue with switching rate sets; to be fixed separately.

MFC after:	1 month
2007-01-15 01:12:28 +00:00
sam
5f3fe586c5 reduce user-visible namespace to just what is needed
MFC after:	2 weeks
2007-01-09 04:37:05 +00:00
sam
94eff94524 bandaid to unbreak build (user code includes this file) 2007-01-09 00:33:10 +00:00
sam
12b187d035 Fix potential node refcnt leak. If mbufs are q'd on ic_mgtq when
the state machine clocks to INIT, node references are not reclaimed.
Add a new routine ieee80211_drain_ifq that does this and use it
instead of IF_DRAIN.

Submitted by:	Sepherosa Ziehau
Obtained from:	DragonFly
MFC after:	1 month
2007-01-08 18:23:43 +00:00
sam
fae048c859 Correct several issues with rate set negotiation:
o add IEEE80211_F_JOIN flag to ieee80211_fix_rate to indicate a station
  is joining a BSS; this is used to control whether or not we over-write
  the basic rate bit in the calculated rate set
o fix ieee80211_fix_rate to honor IEEE80211_F_DODEL when IEEE80211_F_DONEGO
  is not specified (e.g. when joining an ibss network)
o on sta join always delete unusable rates from the negotiated rate set,
  this was being done only ibss networks but is also needed for 11g bss
  with mixed stations
o on sta join delete unusable rates from the bss node's rate set, not the
  scan table entry's rate set
o when calculating a rate set for new neighbors in an ibss caculate a
  negotiated rate set so drivers are not presented with rates they should
  not use

Submitted by:	Sepherosa Ziehau (w/ modifications)
Obtained from:	DragonFly
MFC after:	1 month
2007-01-08 17:24:51 +00:00
mjacob
6f7fa5b385 Fix compile error. 2007-01-06 05:38:18 +00:00
kmacy
c933a59d56 fix declaration / definition mismatch with ieee80211_chan2ieee 2007-01-06 02:56:41 +00:00
sam
18aaf4be3d o unbreak rate set defaulting
o mark 11g mode support on finding 11g or pure 11g (OFDM-only)
  channels; was requiring pure 11g which caused some contortions
  in drivers that manually setup their channel lists
2006-12-28 01:31:26 +00:00
sam
4442f89b49 First cut at half/quarter-rate 11a channel support (e.g. for use
in the Public Safety Band):
o add channel flags to identify half/quarter-rate operation
o add rate sets (need to check spec on 4Mb/s in 1/4 rate)
o add if_media definitions for new rates
o split net80211 channel setup out into ieee80211_chan_init
o fixup ieee80211_mhz2ieee and ieee80211_ieee2mhz to understand half/quarter
  rate channels: note we temporarily use a nonstandard/hack numbering that
  avoids overlap with 2.4G channels because we don't (yet) have enough
  state to identify and/or map overlapping channel sets
o fixup ieee80211_ifmedia_init so it can be called post attach and will
  recalculate the channel list and associated state; this enables changing
  channel-related state like the regulatory domain after attach (will be
  needed for 802.11d support too)
o add ieee80211_get_suprates to return a reference to the supported rate
  set for a given channel
o add 3, 4.5, and 27 MB/s tx rates to rate <-> media conversion routines
o const-poison channel arg to ieee80211_chan2mode
2006-12-27 18:46:18 +00:00
imp
2ad752f0ee Fix packing on the country band descriptor. No real change since this
is unused.

Reviewed by: sam
2006-12-01 18:40:51 +00:00
sam
b49de5db1b back out use of LLC_SNAPFRAMELEN now that sizeof(struct llc) isn't
padded on arm
2006-12-01 17:58:33 +00:00
sam
012439b03a sizeof(struct llc) includes padding on arm; use LLC_SNAPFRAMELEN for now
Submitted by:	jhay
MFC after:	2 weeks
2006-12-01 05:48:35 +00:00
sam
4d53d1a1f7 Default the rate sets for 802.11 operating modes so drivers aren't
required to.  Note this only happens when drivers don't set them
up before calling ieee80211_ifattach so this change is backwards
compatible.

MFC after:	1 month
2006-11-26 22:48:03 +00:00
sam
2b69a396bd add rate control debug msg bit
MFC after:	1 month
2006-11-26 19:55:57 +00:00
sam
c3214b9492 device-independent implementation of AMRR tx rate control algorithm
Obtained from:	openbsd (w/ mods)
MFC after:	1 month
2006-11-26 19:55:26 +00:00
rwatson
10d0d9cf47 Sweep kernel replacing suser(9) calls with priv(9) calls, assigning
specific privilege names to a broad range of privileges.  These may
require some future tweaking.

Sponsored by:           nCircle Network Security, Inc.
Obtained from:          TrustedBSD Project
Discussed on:           arch@
Reviewed (at least in part) by: mlaier, jmg, pjd, bde, ceri,
                        Alex Lyashkov <umka at sevcity dot net>,
                        Skip Ford <skip dot ford at verizon dot net>,
                        Antoine Brodin <antoine dot brodin at laposte dot net>
2006-11-06 13:42:10 +00:00
ru
196675b4cb Now that we have COMPAT_FREEBSD6 officially, use it from opt_compat.h. 2006-09-26 12:41:13 +00:00
andre
2d9e7e4a32 Move ethernet VLAN tags from mtags to its own mbuf packet header field
m_pkthdr.ether_vlan.  The presence of the M_VLANTAG flag on the mbuf
signifies the presence and validity of its content.

Drivers that support hardware VLAN tag stripping fill in the received
VLAN tag (containing both vlan and priority information) into the
ether_vtag mbuf packet header field:

	m->m_pkthdr.ether_vtag = vlan_id;	/* ntohs()? */
	m->m_flags |= M_VLANTAG;

to mark the packet m with the specified VLAN tag.

On output the driver should check the mbuf for the M_VLANTAG flag to
see if a VLAN tag is present and valid:

	if (m->m_flags & M_VLANTAG) {
		... = m->m_pkthdr.ether_vtag;	/* htons()? */
		... pass tag to hardware ...
	}

VLAN tags are stored in host byte order.  Byte swapping may be necessary.

(Note: This driver conversion was mechanic and did not add or remove any
byte swapping in the drivers.)

Remove zone_mtag_vlan UMA zone and MTAG_VLAN definition.  No more tag
memory allocation have to be done.

Reviewed by:	thompsa, yar
Sponsored by:	TCP/IP Optimization Fundraise 2005
2006-09-17 13:33:30 +00:00
sam
f478fb3344 More statistics fixups:
o change rssi to be signed in ieee80211_nodestats
o add noise floor in ieee80211_nodestats (use an implicit hole to
  preserve layout); return it as zero until we can update the api's
  so the driver can provide noise floor data
o add a bandaid so IEEE80211_IOC_STA_STATS works for sta mode; when
  all nodes are in the station table this will no longer be needed
o fix braino in IEEE80211_IOC_STA_INFO implementation; was supposed
  to take a mac address and return info for that sta or all stations
  if ff:ff:ff:ff:ff was supplied--but somehow this didn't get implemented;
  implement the intended semantics and leave a compat shim at the old
  ioctl number for the previous api

Reviewed by:	mlaier
MFC after:	3 weeks
2006-08-10 06:04:00 +00:00
sam
3e268c1af8 minor fixups:
o add some missing stats to the global stat structure
o move accounting work for data frame rx into ieee80211_deliver_data
o add per-sta stats for rx ucast/mcast frames
o set rcvif in ieee80211_deliver_data so callers don't need to

MFC after:	2 weeks
2006-08-10 05:54:36 +00:00
sam
1d4a6e38d2 add per-sta ucast/mcast stats
MFC after:	1 week
2006-08-10 05:37:49 +00:00
sam
a245550432 add support for 802.11 packet injection via bpf
Together with:	Andrea Bittau <a.bittau@cs.ucl.ac.uk>
Reviewed by:	arch@
MFC after:	1 month
2006-07-26 03:15:16 +00:00
sam
21beef2f64 add IEEE80211_IOC_BMISSTHRESHOLD for managing the beacon miss
threshold

Submitted by:	Henrik Brix Andersen <henrik@brixandersen.dk>
MFC after:	2 weeks
2006-07-26 03:07:36 +00:00
sam
0e7f6a5c5f o move min/max beacon interval and dtim period to public location
o add min/max beacon miss threshold settings
o delete IEEE80211_SWBMISS_THRESHOLD, it was never used

MFC after:	2 weeks
2006-07-26 03:05:34 +00:00
sam
c088f3a6cc correct ie length check; need to include fixed part of ie
MFC after:	2 weeks
2006-07-16 21:19:28 +00:00
sam
26117ad450 power save mode state changes should not require clocking the 802.11
state machine; use the reset method instead

MFC after:	2 weeks
2006-07-16 19:10:41 +00:00