Commit Graph

847 Commits

Author SHA1 Message Date
Sam Leffler
a557c018f5 add ieee80211_find_channel_byieee to lookup a channel by ieee channel #
Reviewed by:	thompsa
MFC after:	1 week
2007-11-23 05:57:20 +00:00
Sam Leffler
727fe7f862 update default wme parameters to latest WiFi test plans
Reviewed by:	Allan Lim
MFC after:	3 days
2007-11-23 05:55:06 +00:00
Sam Leffler
12c1df4bc0 correct MIMO power save action frame format;
this one really is from the D2.04 spec

MFC after:	3 days
2007-11-14 21:28:48 +00:00
Sam Leffler
0c99c16b0f correct termination check doing amsdu de-aggregation
MFC after:	3 days
2007-11-08 17:11:40 +00:00
Sam Leffler
5773d80e69 Correct handling of off-channel frames:
o do not override the home channel recorded for the sta when the frame is
  received off-channel; this fixes a problem where we might think the sta
  was operating on the channel the frame was received on causing association
  requests to be ignored/rejected (likely cause of kern/99036)
o don't include rssi of off-channel frames in the avg rssi used to select
  a bss; this gives us a better estimate of the signal we will see for the
  station when on-channel

PR:		kern/99036
Found by:	Yubin Gong
Reviewed by:	sephe
MFC after:	1 week
2007-11-05 17:24:28 +00:00
Sam Leffler
1b6167d239 sync 11n support with vap code base; many changes based on interop
testing with all major vendors

MFC after:	1 week
2007-11-02 05:22:25 +00:00
Sam Leffler
cd9a2dab49 correct channel flags returned by IEEE80211_IOC_STA_INFO; we need
to return all 32-bits to identify stations operating with HT

MFC after:	1 week
2007-11-02 05:19:14 +00:00
Sam Leffler
8279a8ebf2 don't try to re-associate after a parameter change, too many ap's
don't do this right; instead go to the scan cache so we pass through
auth state (if the cache is warm we can do this w/o an actual scan)

MFC after:	1 week
2007-11-02 05:11:45 +00:00
Sam Leffler
b161c30793 silence complaint about not loading the wlan_scan_monitor module;
it does not exist and is not needed as monitor mode operation has
always required setting the current channel

Reviewed by:	thompsa
MFC after:	1 week
2007-10-24 20:20:41 +00:00
Sam Leffler
ab562eef00 invalidate ic_prevchan when constructing a new channel list
Approved by:	re (blanket wireless)
2007-09-18 21:54:27 +00:00
Sam Leffler
37c8bda5fa honor IEEE80211_C_TXFRAG; drivers should never get fragmented packets
unless they indicate they're able to handle them

Approved by:	re (blanket wireless)
2007-09-18 21:09:26 +00:00
Sam Leffler
bb239ce970 tag mgmt and null data frames w/ a WME priority so drivers can assume
only data frames require classification

Approved by:	re (blanket wireless)
2007-09-18 21:07:41 +00:00
Sam Leffler
2949b58fa7 mgmt subtype 13 is action
Approved by:	re (blanket wireless)
MFC after:	2 weeks
2007-09-18 21:02:23 +00:00
Sam Leffler
5698ab1ad3 Close longstanding race dropping inactive stations; grab a reference
to the node before starting the work, otherwise the node may go
away before a reference is made in ieee80211_send_mgmt.

Approved by:	re (blanket wireless)
Obtained from:	Atheros
2007-09-18 21:01:04 +00:00
Sam Leffler
e5ac9e91bd Safeguard count of stations in power save; don't touch it unless we're
operating in a mode where it should be maintained.

Approved by:	re (blanket wireless)
MFC after:	2 weeks
2007-09-18 20:55:51 +00:00
Sam Leffler
7edb9e0a7f skip IEEE80211_MODE_AUTO in announcing supported rates in ieee80211_announce;
there won't be any

Approved by:	re (blanket wireless)
2007-09-18 20:51:55 +00:00
Sam Leffler
f0ee92d585 o add IEEE80211_RATE_MCS to use instead of naked constant (for marking MCS)
o correct ieee80211_rate2media handling of MCS
o correct rate HT announcements for 11n devices

Approved by:	re (blanket wireless)
2007-09-18 20:46:36 +00:00
Sam Leffler
b337fbc435 o move IEEE80211_NONQOS_TID into a public location
o add IEEE80211_TID_SIZE and replace all the nake constants

Approved by:	re (blanket wireless)
2007-09-18 20:40:21 +00:00
Sam Leffler
95032ab129 remove IFM_IEEE80211_HT40PLUS and IFM_IEEE80211_HT40MINUS; they
never got used so nuke 'em before we branch

Approved by:	re (blanket wireless)
2007-09-18 20:30:40 +00:00
Sam Leffler
b105a06908 Update beacon handling to sync w/ vap code base:
o add driver callback to handle notification of beacon changes;
  this is required for devices that manage beacon frames themselves
  (devices must override the default handler which does nothing)
o move beacon update-related flags from ieee80211com to the beacon
  offsets storage (or handle however a driver wants)
o expand beacon offsets structure with members needed for 11h/dfs
  and appie's
o change calling convention for ieee80211_beacon_alloc and
  ieee80211_beacon_update
o add overlapping bss support for 11g; requires driver to pass
  beacon frames from overlapping bss up to net80211 which is not
  presently done by any driver
o move HT beacon contents update to a routine in the HT code area

Reviewed by:	avatar, thompsa, sephe
Approved by:	re (blanket wireless)
2007-09-17 19:07:24 +00:00
Sam Leffler
5ef9cd6c92 correct netband skip check in constructing a country ie
Approved by:	re (blanket net80211)
2007-09-17 03:48:32 +00:00
Sam Leffler
7595008bb1 oops, add missing bit from last change
Approved by:	re (blanket wireless)
2007-09-06 00:08:02 +00:00
Sam Leffler
c066143c08 Fixup sta inactivity handling:
o reset ni_inact when ni_inact_reload is changed so we're
  assured a valid setting
o never let ni_inact go negative
o add a knob to disable hostap sta idle handling (e.g. so it can be done
  by a user application)
o remove bogus reload on associate

Reviewed by:	avatar
Approved by:	re (blanket wireless)
2007-09-06 00:04:36 +00:00
Sam Leffler
14fb6b8fe2 o add 802.11 state machine states for DFS and client-side power save
o fixup drivers to ignore new states

Reviewed by:	avatar (?)
Approved by:	re (blanket wireless)
2007-09-05 21:31:32 +00:00
Sam Leffler
3f87f68e74 Update channel definition:
o add ic_extieee to hold the HT40 extension channel number
o add ic_state to track dynamic channel state for DFS
o add flags to mark regulatory channel requirements
o add state defs for DFS/radar support

Reviewed by:	avatar
Approved by:	re (blanket wireless)
2007-09-05 20:37:39 +00:00
Sam Leffler
eddedabe31 Miscellaneous fixups to 802.11 defs:
o update 11n definitions to D2.0 spec
o add IEEE80211_CAPINFO_SPECTRUM_MGMT for DFS support
o add CSA ie definition for DFS support
o purge some unused definitions
o correct 802.11 reason and status codes
o correct reason code returned when a sta tries to associate to an
  ap operating with WPA/RSN but without a WPA/RSN ie

Reviewed by:	thompsa, avatar
Approved by:	re (blanket wireless)
2007-09-05 20:29:51 +00:00
Sam Leffler
b1acbdbbbb o add M_WEP mbuf flag so drivers can mark frames that are decrypted by the
device and have had the crypto bits stripped from the 802.11 header
o strip mbuf flags in the rx path before passing up the stack

Reviewed by:	thompsa, sephe, avatar
Approved by:	re (blanket wireless)
2007-09-05 20:22:59 +00:00
Sepherosa Ziehau
f05ba5eeed Off-by-one bug in country ie construction, which will make HOSTAP send out
malformatted beacons.

Reviewed by: sam
Approved by: re (bmah), sam (mentor)
2007-08-26 11:34:51 +00:00
Sepherosa Ziehau
98b335504d Fix following nits:
- Per ieee80211com sysctl ctx leakage on detach
- getmgtframe incorrectly adjusts mbuf.m_data

Reviewed by: sam
Approved by: re (bmah), sam (mentor)
2007-08-26 11:32:56 +00:00
Sam Leffler
d72c72537e drop frames marked for encryption when no key is available
Reviewed by:	avatar
Approved by:	re (kensmith)
Obtained from:	madwifi
2007-08-24 15:44:27 +00:00
Sepherosa Ziehau
7f02e579c5 In add_channel(), search 11g channels if mode is AUTO and corresponding
11b channel is not found, e.g. Atheros 5211.

Reported by: matteo
Problem outlined by: thompsa
Reviewed by: sam, thompsa
Approved by: re (kensmith), sam (mentor)
Tested by: matteo (an early version)
2007-07-20 11:38:12 +00:00
Sam Leffler
c4ed2c08ad revert handling of ssid and bssid to be manadatory instead of advisory
Prodded by:	Kevin Gerry
Reviewed by:	thompsa, sephe
Approved by:	re (kensmith)
2007-07-12 17:22:43 +00:00
Andrew Thompson
d4548f0965 Move the XCHANNEL radiotap definition to a free slot. NetBSD defined some
additional values causing a conflict.

Submitted by:	sam
Approved by:	re (kensmith)
2007-07-01 06:59:30 +00:00
Andrew Thompson
d81b3a5588 Fix scanning issues since the new net80211 code went in
- provide dummy routines for ic_scan_curchan and ic_scan_mindwell, we do not support those operations.
- add ieee80211_scan_done() to tell the scanning module that all channels have been scanned.
- pass IEEE80211_S_SCAN state off to net80211 so it can initiate scanning
- fix overflow in the rates array
- scale the rate value passed back from the firmware scan to the units that net80211 uses.

Submitted by:	Token
Reviewed by:	sam, avatar
Approved by:	re (kensmith)
2007-06-30 21:39:21 +00:00
Andrew Thompson
b54b1bab4b Change the channel number in the scan results struct to be a pointer to the
operating channel and use this in the scan cache rather than directly using
ic_curchan. Some firmware cards can only do a full scan and so ic_curchan does
not have the correct value.

Also add IEEE80211_CHAN2IEEE to directly dereference ic_ieee from the channel
to be used in the fast path.

Reviewed by:	sam, sephe
Approved by:	re (kensmith)
2007-06-30 21:23:23 +00:00
Sam Leffler
b038594e17 Correct msecs_to_ticks macro. This fixes problems when hz is not the
default 1000 setting.

Reviewed by:	thompsa, rpaulo
Approved by:	re (bmah)
2007-06-25 03:26:10 +00:00
Sam Leffler
cb8bac4aee Correct state machine handling of AUTH -> AUTH transitions that pass
through wpa_supplcant.  If a sta is deauth'd (e.g. due to inactivity)
with roaming mode set to manual then a subsequent MLME assoc request
will be incorrectly handled and the station will never reauthenticate.
To fix this interpret a reason code of zero as sufficient to send an
auth request frame.
2007-06-16 05:13:48 +00:00
Warner Losh
820d8b5c5d Prefer __packed to __attribute__((__packed__)).
OK'd by sam@ months ago...
2007-06-11 19:34:53 +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
ae8b733312 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
Sepherosa Ziehau
63afe606f8 - 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 Leffler
6dbd16f1cc change ic_modecaps to a bit vector and use setbit, et. al. 2007-03-11 22:37:32 +00:00
Sam Leffler
c6303b231f 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 Leffler
70e28b9a2d 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 Leffler
a000d7c202 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 Leffler
ca700860df improve debug msg for ie's that are too short
MFC after:	2 weeks
2007-03-11 07:08:04 +00:00
Sam Leffler
801df4a58c 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 Leffler
0adf0a3b3e 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 Leffler
9672f0230f disallow re-associate with a slot time mismatch
Obtained from:	Atheros
MFC after:	2 weeks
2007-03-11 06:52:22 +00:00
Sam Leffler
f597faba37 move __inline before type to appease gcc 4.x
Obtained from:	netbsd
2007-03-11 06:44:51 +00:00
Sam Leffler
7835d71cde white space diff reduction 2007-03-11 06:38:26 +00:00
Sam Leffler
cda15ce18b add IEEE80211_KEY_UNDEFINED and use it instead of local defs
Obtained from:	netbsd
2007-03-11 06:36:10 +00:00
Sam Leffler
b265ac32c2 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 Leffler
11df4239a6 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 Leffler
3c419c1bb5 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 Leffler
49aa47d6c7 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 Leffler
fe49f061b4 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 Leffler
89f0549d37 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 Leffler
f48ad55ef5 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 Leffler
f3b179a4b1 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 Leffler
d9ff043726 add IEEE80211_IS_CHAN_PASSIVE
MFC after:	1 week
2007-02-02 02:45:33 +00:00
Sam Leffler
ca4ac7ae14 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 Leffler
5675bedd40 reduce user-visible namespace to just what is needed
MFC after:	2 weeks
2007-01-09 04:37:05 +00:00
Sam Leffler
37c970e41e bandaid to unbreak build (user code includes this file) 2007-01-09 00:33:10 +00:00
Sam Leffler
915f1482a9 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 Leffler
79edaebfe4 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
Matt Jacob
38da14963f Fix compile error. 2007-01-06 05:38:18 +00:00
Kip Macy
fe1903bcff fix declaration / definition mismatch with ieee80211_chan2ieee 2007-01-06 02:56:41 +00:00
Sam Leffler
45fa8b0e9a 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 Leffler
41b3c790eb 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
Warner Losh
f4fcdb0eb5 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 Leffler
ab96db105f 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 Leffler
8c86f43df4 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 Leffler
aadecb1ac8 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 Leffler
344a9e8c0f add rate control debug msg bit
MFC after:	1 month
2006-11-26 19:55:57 +00:00
Sam Leffler
74828f25db 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
Robert Watson
acd3428b7d 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
Ruslan Ermilov
f88b3f22ac Now that we have COMPAT_FREEBSD6 officially, use it from opt_compat.h. 2006-09-26 12:41:13 +00:00
Andre Oppermann
78ba57b9e1 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 Leffler
d1c85dae69 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 Leffler
06efa2f0eb 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 Leffler
b6e9b119a2 add per-sta ucast/mcast stats
MFC after:	1 week
2006-08-10 05:37:49 +00:00
Sam Leffler
246b546762 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 Leffler
546786c951 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 Leffler
202b0d1101 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 Leffler
5eac3ff784 correct ie length check; need to include fixed part of ie
MFC after:	2 weeks
2006-07-16 21:19:28 +00:00
Sam Leffler
0eda166b8f 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
Sam Leffler
70326a6eb6 tighten invariant on loops used to parse ie's; this ensures we never
touch data outside the packet (previously we might touch 1 byte); it
also has the happy side effect of working around broken orinoco/agere
firmware that sends malformed association response frames

Help by:	Vladimir Egorin
2006-07-16 16:02:17 +00:00
Sam Leffler
f1bf5adef5 remove duplicate ifname in debug msg
MFC after:	1 week
2006-06-24 18:00:17 +00:00
John Baldwin
edd32c2da2 Use kern_kldload() and kern_kldunload() to load and unload modules when
we intend for the user to be able to unload them later via kldunload(2)
instead of calling linker_load_module() and then directly adjusting the
ref count on the linker file structure.  This makes the resulting
consumer code simpler and cleaner and better hides the linker internals
making it possible to sanely lock the linker.
2006-06-13 21:36:23 +00:00
Christian S.J. Peron
16d878cc99 Fix the following bpf(4) race condition which can result in a panic:
(1) bpf peer attaches to interface netif0
	(2) Packet is received by netif0
	(3) ifp->if_bpf pointer is checked and handed off to bpf
	(4) bpf peer detaches from netif0 resulting in ifp->if_bpf being
	    initialized to NULL.
	(5) ifp->if_bpf is dereferenced by bpf machinery
	(6) Kaboom

This race condition likely explains the various different kernel panics
reported around sending SIGINT to tcpdump or dhclient processes. But really
this race can result in kernel panics anywhere you have frequent bpf attach
and detach operations with high packet per second load.

Summary of changes:

- Remove the bpf interface's "driverp" member
- When we attach bpf interfaces, we now set the ifp->if_bpf member to the
  bpf interface structure. Once this is done, ifp->if_bpf should never be
  NULL. [1]
- Introduce bpf_peers_present function, an inline operation which will do
  a lockless read bpf peer list associated with the interface. It should
  be noted that the bpf code will pickup the bpf_interface lock before adding
  or removing bpf peers. This should serialize the access to the bpf descriptor
  list, removing the race.
- Expose the bpf_if structure in bpf.h so that the bpf_peers_present function
  can use it. This also removes the struct bpf_if; hack that was there.
- Adjust all consumers of the raw if_bpf structure to use bpf_peers_present

Now what happens is:

	(1) Packet is received by netif0
	(2) Check to see if bpf descriptor list is empty
	(3) Pickup the bpf interface lock
	(4) Hand packet off to process

From the attach/detach side:

	(1) Pickup the bpf interface lock
	(2) Add/remove from bpf descriptor list

Now that we are storing the bpf interface structure with the ifnet, there is
is no need to walk the bpf interface list to locate the correct bpf interface.
We now simply look up the interface, and initialize the pointer. This has a
nice side effect of changing a bpf interface attach operation from O(N) (where
N is the number of bpf interfaces), to O(1).

[1] From now on, we can no longer check ifp->if_bpf to tell us whether or
    not we have any bpf peers that might be interested in receiving packets.

In collaboration with:	sam@
MFC after:	1 month
2006-06-02 19:59:33 +00:00
Diomidis Spinellis
132142c572 Move conditional preprocessing out from the IEEE80211_DPRINTF macro
invocation.  Per C99 6.10.3 paragraph 11 preprocessing directives
appearing as macro arguments yield undefined behavior.
2006-06-01 14:06:32 +00:00
Sam Leffler
ee25b8df01 Ensure outbound data packets in hostap mode are delivered only to
stations that are associated by making ieee80211_find_txnode return
NULL when a unicast frame is to be delivered to an unassociated
station.  This will be handled differently in the future but for
now putting the check here allows all drivers to immediately do
the right thing.

Reviewed by:	avatar
MFC after:	1 week
2006-04-28 19:06:15 +00:00
Sam Leffler
9cab5ba3f9 back out public safety-specific channel number mapping; we can't do
it until we know it should be applied as otherwise we can map 11a
channels into the 2.4G range and choose the wrong item from the
chanenl array
2006-04-26 16:00:37 +00:00
Sam Leffler
42568791f9 implement set(IEEE80211_IOC_STA_STATS) for hostapd; for
now just make it clear station statistics (could read
a stat block and assign to caller can do partial changes)

Reviewed by:	avatar (previous version)
MFC after:	1 week
2006-03-27 05:22:35 +00:00
Sam Leffler
83a244dbe0 when doing s/w crypto make sure work is done w/ a writable mbuf chain;
this corrects problems with drivers that rely on the host to do
crypto (iwi, ipw, ral, ural, wi (hostap), awi)

Hard work by:	luigi, mlaier
Reviewed by:	luigi, mlaier
MFC after:	1 week
2006-03-15 21:27:08 +00:00
Sam Leffler
ad26242724 fix switching between agressive and non-agressive wmm modes
Obtained from:	atheros
MFC after:	3 days
2006-03-10 06:18:03 +00:00
Sam Leffler
a8eb5364fe use m_dup instead of m_copypacket when doing internal bridging
in case packets are modified (e.g. encrypted)

MFC after:	1 week
2006-03-07 03:55:05 +00:00
Sam Leffler
66ef39690f deliver an l2uf frame on sta join to prime the bridge
Obtained from:	madwifi
MFC after:	1 week
2006-03-06 17:26:16 +00:00
Sam Leffler
097131fffe when scanning channels marked passive defer probe request until
802.11 traffic is seen; fixes problems with ap's hiding their ssid

Obtained from:	atheros
MFC after:	1 week
2006-03-06 17:23:26 +00:00
Sam Leffler
667dad55fc consolidate calculation of capabilities ie
Reviewed by:	avatar
MFC after:	2 weeks
2006-02-25 05:36:43 +00:00
Sam Leffler
386d84f60e honor user-specified key index for global key slots
Submitted by:	Joe Love
Reviewed by:	avatar
MFC after:	1 week
2006-02-21 23:51:19 +00:00
Sam Leffler
d3b3a464a5 treat setting the optional ie to a zero-length datum to mean "delete
the ie"; this helps drivers that (wrongly) check ic_opt_ie against NULL
when making decisions

Reviewed by:	luigi, avatar
MFC after:	3 days
2006-02-20 17:17:00 +00:00
Sam Leffler
97bcffbd74 o make driver override of net80211 parameter state consistent
with methods: instead of honoring non-zero values expect drivers
  to write their own values on return from ieee80211_ifattach
o add a define for the default h/w bmiss count

MFC after:	2 weeks
2006-02-14 17:48:56 +00:00
Sam Leffler
6d049ab343 set the mgt frame tx timer before dispatching the frame to the
driver; this closes a race where a response could be processed
before the timer was started and cause a RUN->SCAN state change
when operating in station mode

Reviewed by:	avatar, dyoung
MFC after:	1 week
2006-02-08 17:30:31 +00:00
Sam Leffler
e99662a623 s/w beacon miss facility; need to add knobs to fiddle with the settings
MFC after:	2 weeks
2006-01-23 21:02:49 +00:00
Sam Leffler
233e00212e switch beacon miss threshold from a time to the number of beacon
frames; the time value was implicitly based on the beacon interval
but never being updated so wrong when the negotiated beacon interval
was not 100 TU
2006-01-23 20:57:30 +00:00
Sam Leffler
336ec6a116 bounds check each ie's length when parsing
Obtained from:	madwifi
MFC after:	1 week
2006-01-23 19:31:00 +00:00
Sam Leffler
239cc3b6ce Rev ioctl to get scan results:
o lock the list walk
o malloc a results buffer instead of copying out one result at a time
  using an on-stack buffer
o fix definition of ieee80211req_scan_result so size of variable-length
  information elements is large enough to hold all possible ie's
  (still only return wpa+wme, at some point may return all)
o make rssi+noise data signed; they should've been so all along
o add a bit more padding for future additions while we're here
o define a new ioctl for new api and add compat code for old ioctl
  under COMPAT_FREEBSD6 (temporarily enabled local to the file)

Reviewed by:	Scott Long
MFC after:	2 weeks
2006-01-18 22:17:50 +00:00
Sam Leffler
a1a5050276 bump the scan generation number before iterating so we're guaranteed
to have a value that's not been used before; this fixes the problem
where the first traversal of the scan list did nothing because the
entries were initialized with the current generation number (a
separate issue)

MFC after:	1 week
2006-01-18 19:56:17 +00:00
Colin Percival
9238d0aff6 Correct a buffer overflow when scanning for 802.11 wireless networks.
Security:	FreeBSD-SA-06:05.80211
2006-01-18 09:03:15 +00:00
Sam Leffler
2204bcfd7c add flag to tag frames w/ a known bad FCS
Obtained from:	netbsd
MFC after:	1 week
2006-01-09 17:04:56 +00:00
Sam Leffler
59a440350c enable "aggressive mode" only when operating in ap or station mode; in
particular this fixes use of wme in adhoc demo mode, it wasn't possible
to set the txop limit because the aggressive mode logic would override

Reviewed by:	apatti
MFC after:	2 weeks
2006-01-02 17:16:27 +00:00
Sam Leffler
0912bac9b3 update erp information element in the beacon frame to reflect
changes in the bss

Reviewed by:	avatar
Obtained from:	atheros
MFC after:	2 weeks
2006-01-02 16:57:20 +00:00
Sam Leffler
399178c917 correct checking for turbo channels: rev 1.24 fixed static turbo channels
but broke handling of the turboG channel; since we aren't ready to revamp
the channel list just check for turboA channels for now so channel 6 is
considered in auto mode

Noticed by:	gibbs
2005-12-30 00:40:36 +00:00
Sam Leffler
9a9162def2 correct (reversed) ms<->tu macros
Reviewed by:	apatti, kcyu
2005-12-29 19:03:45 +00:00
Gleb Smirnoff
d147662cd3 - Fix VLAN_INPUT_TAG() macro, so that it doesn't touch mtag in
case if memory allocation failed.
- Remove fourth argument from VLAN_INPUT_TAG(), that was used
  incorrectly in almost all drivers. Indicate failure with
  mbuf value of NULL.

In collaboration with:	yongari, ru, sam
2005-12-18 18:24:27 +00:00
Sam Leffler
c27e4e31fe make packet bursting configurable (default to on if device is capable) 2005-12-14 19:32:53 +00:00
Sam Leffler
8e292e8ecd When creating neighbor entries for an ahdemo bss apply the local
settings.  In particular this allows us to use QoS frames in a
bss and in turn enables disabling ack's.
2005-12-14 01:18:36 +00:00
Sam Leffler
50d8b493e4 when creating an ahdemo bss use any requested bssid; otherwise use zero
Obtained from:	madwifi
2005-12-14 01:16:22 +00:00
Sam Leffler
259bb4d3b9 allow setting the bssid in any mode
Obtained from:	netbsd
2005-12-14 01:14:22 +00:00
Sam Leffler
d16441fde1 disallow module unload when there are dynamic references
MFC after:	1 week
2005-12-12 19:07:48 +00:00
Sam Leffler
1fd2349de8 propagate current bss state on sta join so, in particular, authmode
is set properly in the new bss node

MFC after:	2 weeks
2005-12-12 18:44:27 +00:00
Sam Leffler
1b49e12042 Bandaid ieee80211_set_chan to handle a channel parameter of "any";
this can happen under certain conditions when scanning.  This logic
will eventually go away with the new scanning code.

While here de-inline the routine.

MFC after:	1 week
2005-12-12 18:42:20 +00:00
Sam Leffler
6cfac1074c o correct auto mode logic for avoiding turbo channels
o correct assumption that a static turbo channel is also
  usable in 11a; the opposite is true

MFC after:	1 week
2005-12-12 18:38:20 +00:00
Sam Leffler
e701e041f2 Add ieee80211_beacon_miss for processing sta mode beacon miss events
in the 802.11 layer: we send a directed probe request frame to the
current ap bmiss_max times (w/o answer) before scanning for a new ap.

MFC after:	2 weeks
2005-12-12 18:04:44 +00:00
Sam Leffler
047f1635dd add some useful definitions that'll be used soon 2005-12-12 17:57:00 +00:00
Sam Leffler
64353cb0ef add fixed rate for sending multicast frames
Obtained from:	atheros
MFC after:	1 week
2005-12-12 17:54:39 +00:00
Sam Leffler
c25442860a change malloc when setting an optional ie to use M_NOWAIT
MFC after:	3 days
2005-12-12 17:40:49 +00:00
Sam Leffler
e55e5e4276 correct parameter check when retrieving the current channel list
MFC after:	3 days
2005-12-12 17:38:53 +00:00
Sam Leffler
a196b35f08 correct handling of dtim for periods > 1
Obtained from:	madwifi
2005-12-05 22:14:13 +00:00
Sam Leffler
be425a0f40 Adhoc mode fixups:
o plug memory leak in adhoc mode: on rx the sender may be the
  current master so simply checking against ic_bss is not enough
  to identify if the packet comes from an unknown sender; must
  also check the mac address
o split neighbor node creation into two routines and fillin state
  of nodes faked up on xmit when a beacon or probe response frame
  is later received; this ensures important state like the rate set
  and advertised capabilities are correct

Obtained from:	netbsd
MFC after:	1 week
2005-12-04 04:50:27 +00:00
Sam Leffler
f219c9d3d3 fix dynamic changes in short slottime for 11g sta mode: set the
slot time based on the rcvd capabilities, not the existing ones

Obtained from:	atheros
MFC after:	1 week
2005-11-30 19:54:41 +00:00
Sam Leffler
6f322b78de Update ieee80211_mhz2ieee to understand public safety bands and spectrum
that can potentially be mapped to negative ieee #'s.

NB: before operation on the latter can be supported we need to cleanup
    various code that assumes ieee channel #'s are >= 0
2005-11-15 05:56:32 +00:00
Ruslan Ermilov
4a0d6638b3 - Store pointer to the link-level address right in "struct ifnet"
rather than in ifindex_table[]; all (except one) accesses are
  through ifp anyway.  IF_LLADDR() works faster, and all (except
  one) ifaddr_byindex() users were converted to use ifp->if_addr.

- Stop storing a (pointer to) Ethernet address in "struct arpcom",
  and drop the IFP2ENADDR() macro; all users have been converted
  to use IF_LLADDR() instead.
2005-11-11 16:04:59 +00:00
Andre Oppermann
34333b16cd Retire MT_HEADER mbuf type and change its users to use MT_DATA.
Having an additional MT_HEADER mbuf type is superfluous and redundant
as nothing depends on it.  It only adds a layer of confusion.  The
distinction between header mbuf's and data mbuf's is solely done
through the m->m_flags M_PKTHDR flag.

Non-native code is not changed in this commit.  For compatibility
MT_HEADER is mapped to MT_DATA.

Sponsored by:	TCP/IP Optimization Fundraise 2005
2005-11-02 13:46:32 +00:00
Tai-hwa Liang
8157976a26 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
2005-08-30 14:27:47 +00:00
Sam Leffler
5ff8092143 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 17:50:21 +00:00
Sam Leffler
188757f54c 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
2005-08-13 17:31:48 +00:00
Sam Leffler
efefac4077 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 17:42:13 +00:00
Sam Leffler
b5c9941514 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
2005-08-10 16:22:30 +00:00
Robert Watson
13f4c340ae 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
2005-08-09 10:20:02 +00:00
Sam Leffler
c1225b52f6 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 18:46:36 +00:00
Sam Leffler
2cab1d3dc4 use ieee80211_iterate_nodes to retrieve station data; the previous
code walked the list w/o locking

MFC after:	1 week
2005-08-08 05:49:29 +00:00
Sam Leffler
d365f9c760 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
2005-08-08 03:30:57 +00:00
Sam Leffler
e35ac6b9dd fix debug msg typo
MFC after:	3 days
2005-08-06 04:57:27 +00:00
Sam Leffler
97c973adc4 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
2005-08-06 04:56:49 +00:00
Sam Leffler
19ad2dd79a 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
2005-07-31 06:12:32 +00:00
Sam Leffler
767cee4f5b 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 04:41:25 +00:00
Sam Leffler
936f15d221 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
2005-07-27 02:53:09 +00:00
Sam Leffler
44b666cd0e the AREF flag is only meaningful in ap mode; adhoc neighbors now
are timed out of the sta/neighbor table
2005-07-23 00:16:46 +00:00
Sam Leffler
f66d97f6bc 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 23:25:46 +00:00
Sam Leffler
af8418dcb1 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 21:11:26 +00:00
Sam Leffler
add59d0875 split 802.11 frame xmit setup code into ieee80211_send_setup
MFC after:	3 days
2005-07-22 20:48:11 +00:00
Sam Leffler
e996233220 simplify ic_newassoc callback
MFC after:	3 days
2005-07-22 17:57:16 +00:00
Sam Leffler
641b4d0b2d simplify ieee80211_ibss_merge api
MFC after:	3 days
2005-07-22 17:54:40 +00:00
Sam Leffler
0677adcdb0 add stats we know we'll need soon and some spare fields for future expansion
MFC after:	3 days
2005-07-22 17:50:13 +00:00
Sam Leffler
edfa57d0f0 simplify tim callback api
MFC after:	3 days
2005-07-22 17:45:48 +00:00
Sam Leffler
a92c6eb0f1 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 17:42:08 +00:00
Sam Leffler
e4918ecdb9 simplify ieee80211_node_authorize and ieee80211_node_unauthorize api's
MFC after:	3 days
2005-07-22 17:36:12 +00:00
Sam Leffler
f62121ce8e simplifiy ieee80211_send_nulldata api
MFC after:	3 days
2005-07-22 17:31:18 +00:00
Sam Leffler
7d77cd5381 simplify rate set api's by removing ic parameter (implicit in node reference)
MFC after:	3 days
2005-07-22 17:29:03 +00:00
Sam Leffler
bdad3a1066 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 17:21:36 +00:00
Sam Leffler
aa8c14c444 missed one in last commit; add device name to discard msgs 2005-07-22 17:16:37 +00:00
Sam Leffler
497c84ae3a include device name in discard msgs 2005-07-22 17:13:44 +00:00
Sam Leffler
bd6f09d92f add diag msgs for frames discarded because the direction field is wrong 2005-07-22 17:12:05 +00:00
Sam Leffler
1bd482ef57 split data frame delivery out to a new function ieee80211_deliver_data 2005-07-22 17:08:38 +00:00
Sam Leffler
70231e3d0a 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 17:00:48 +00:00
Sam Leffler
33acb1cec1 o add IEEE80211_FRAG_DEFAULT
o move default settings for RTS and frag thresholds to ieee80211_var.h
2005-07-22 16:55:27 +00:00
Sam Leffler
2c39b32c94 diff reduction against p4: define IEEE80211_FIXED_RATE_NONE and use
it instead of -1
2005-07-22 16:50:18 +00:00
Sam Leffler
af8d224ec0 add flags missed in last merge 2005-07-22 16:37:56 +00:00
Sam Leffler
f6df31916c 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 16:36:12 +00:00
Sam Leffler
a3d1edc2b2 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 05:17:52 +00:00
Sam Leffler
79198e858b remove excess whitespace 2005-07-22 05:15:53 +00:00
Sam Leffler
b138c15024 use IF_HANDOFF when bridging frames internally so if_start gets
called; fixes communication between associated sta's

MFC after:	3 days
2005-07-22 04:55:40 +00:00
Sam Leffler
dd423201b7 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 03:06:23 +00:00
Sam Leffler
ac594bdfd7 nuke assert that duplicates real check
Reviewed by:	avatar
Approved by:	re (scottl)
2005-07-11 03:00:20 +00:00
Sam Leffler
5c8a7b1b05 Change default key allocation method to do the right thing for
legacy parts (i.e. those that have 4 global key slots).  We
blindly assign unicast keys to key slot 0.  Devices that need
alternate allocation logic must override this method.

Reviewed by:	avatar
Approved by:	re (scottl)
2005-07-09 23:15:30 +00:00
Sam Leffler
1a08800d14 correct check for high priority wme traffic
Noticed by:	Ralf Assmann
Reviewed by:	apatti
Approved by:	re (scottl)
2005-07-08 22:49:26 +00:00
Sam Leffler
c52dab628a fix another instance of the MORE_DATA bit handling for frames on the
power save queue (missed in previous commit)

Submitted by:	Bruno Randolf
Approved by:	re (scottl)
2005-07-08 16:36:02 +00:00
Sam Leffler
c4f040c3f3 add "pureg" mode for ap operation: reject association requests from
11b-only stations when operating in 11g

Reviewed by:	avatar
Approved by:	re (scottl)
2005-07-06 15:38:27 +00:00
Sam Leffler
bc5627d91f Fix handling of data frames queued for a station in power save mode:
don't mark the MORE_DATA bit when taking it off the ps queue, there's
no 802.11 header then; we must wait to do this at encap time so
mark the mbuf instead.

Reviewed by:	avatar
Approved by:	re (scottl)
Obtained from:	Atheros
2005-07-06 01:55:17 +00:00
Sam Leffler
ebdda46c84 Fix race condition in handling node reference counts for authenticating
stations in ap mode.  Track when a node's first auth frame is
received and use this to decide whether or not to bump the refcnt.
This insures we only ever bump the refcnt once.

Reviewed by:	avatar
Approved by:	re (scottl)
2005-07-06 01:51:44 +00:00
Tai-hwa Liang
720bd46e9f Only update the scan entry state based on newly received frames.
This fixes duplicative BSS entries(memory leaks as well) listed in
"ifconfig dev list scan" when a station fails to associate with an AP.

Reviewed by:	sam
Approved by:	re (scottl)
2005-07-06 01:31:34 +00:00
Sam Leffler
e5f9856fd5 remove auto-add of IEEE80211_KEY_GROUP; all the apps that need to
set it have been fixed

Reviewed by:	avatar
Approved by:	re (scottl)
2005-07-05 18:05:25 +00:00
Sam Leffler
b5d4660f64 o when setting a wpa key, hold a ref on the bss node;
fixes a ref cnt leak
o make unicast key handling on delete identical to set
o change legacy wep key api to reset the 802.11 state
  machine for backwards compatibility

Reviewed by:	avatar
Approved by:	re (scottl)
2005-07-05 17:35:35 +00:00
Sam Leffler
7edb8cf9c7 when operating in ap mode, explicitly drop associated/authenticated
stations when transitioning to INIT state (e.g. as a result of
changing state at the 802.11 level)

Approved by:	re (scottl)
2005-07-04 01:29:41 +00:00
Sam Leffler
bc031652cb revert 1.53; it breaks ibss merge
Noticed by:	Bruno Randolf
Approved by:	re (dwhite)
2005-06-13 21:01:06 +00:00
Sam Leffler
3fd5a5aa93 don't look at the wme ie in a beacon unless we negotiated use 2005-06-10 21:30:29 +00:00
Brooks Davis
fc74a9f93a Stop embedding struct ifnet at the top of driver softcs. Instead the
struct ifnet or the layer 2 common structure it was embedded in have
been replaced with a struct ifnet pointer to be filled by a call to the
new function, if_alloc(). The layer 2 common structure is also allocated
via if_alloc() based on the interface type. It is hung off the new
struct ifnet member, if_l2com.

This change removes the size of these structures from the kernel ABI and
will allow us to better manage them as interfaces come and go.

Other changes of note:
 - Struct arpcom is no longer referenced in normal interface code.
   Instead the Ethernet address is accessed via the IFP2ENADDR() macro.
   To enforce this ac_enaddr has been renamed to _ac_enaddr.
 - The second argument to ether_ifattach is now always the mac address
   from driver private storage rather than sometimes being ac_enaddr.

Reviewed by:	sobomax, sam
2005-06-10 16:49:24 +00:00
Sam Leffler
7f1d8b7517 validate the bssid for non-data frames too when operating in
adhoc/ahdemo/hostap modes
2005-06-10 16:14:48 +00:00
Sam Leffler
2cc12aded0 o fix wpa w/ wme: don't strip the QoS header on recv as tkip requires
it; instead pass the space occupied by the header down into the
  crypto modules (except in the demic case which needs it only when
  doing int in s/w)
o while here fix defrag to strip the header from 2nd and later frames
o teach decap code how to handle 4-address frames
2005-06-10 16:11:24 +00:00
Sam Leffler
da17aba102 mark stations authorized during recv processing instead of doing it
as a side effect of sending an auth success frame; sending mgmt
frames should not have side effects
2005-06-10 05:04:42 +00:00
Sam Leffler
7268fa6483 move AID implementation defines from the protocol definitions to
where they are used
2005-06-10 04:42:34 +00:00
Sam Leffler
404265d4fe accept diassoc frame in ASSOC state 2005-06-10 04:37:05 +00:00
Sam Leffler
4720ec1918 pull some debug msgs up so they're seen more often 2005-06-10 01:48:57 +00:00
Sam Leffler
181181ac41 kick the state machine when we receive failure notice from an ap (when
operating in sta mode); this speeds up the state machine, previously
we were acting on a timeout
2005-06-10 01:47:28 +00:00
Sam Leffler
4fd1a57d92 discard open auth requests in adhoc mode 2005-06-10 01:43:28 +00:00
Sam Leffler
b8d05d3cf7 reject open auth requests when shared key auth is configured
Obtained from:	Atheros
2005-06-10 01:41:59 +00:00
Sam Leffler
84eb84c45d add ieee80211_send_error to encapsulate an idiom 2005-06-10 01:40:58 +00:00
Sam Leffler
c789ea8b60 o always check if ic_set_tim is !NULL before using it
o add missing call to clear tim after flushing ps q
2005-06-10 01:38:02 +00:00
Sam Leffler
ec42511509 mark state for protection only when operating in 11g 2005-06-10 01:35:21 +00:00
Sam Leffler
9b4db82905 don't reject station based on the PRIVACY bit in the capabilities;
the 802.11 spec says not to

Obtained from:	Atheros
2005-06-10 01:33:47 +00:00
Sam Leffler
49d4c02f30 correct checks for rate set compatibility 2005-06-10 01:31:28 +00:00
Sam Leffler
f1e95a234a record tstamp from beacons received in station mode when associated;
this is needed by drivers that want to resync their timers based on
the tsf of the last recv'd beacon frame
2005-06-10 01:29:21 +00:00
Sam Leffler
a634d6a788 o collect dtim period+count from beacons in station mode so drivers
can better program beacon timers
o leave placeholder in com structure for future ap/adhoc mode tim support

Reviewed by:	avatar
2005-06-09 04:05:43 +00:00
Sam Leffler
f02a0bd2ac Change the MLME ASSOCIATE ioctl to accept either a ssid, a bssid,
or a bssid+ssid. This is needed for later versions of wpa_supplicant
and for forthcoming addons to wpa_supplicant.

Note this is an api change and applications must be rebuilt.
2005-06-07 23:37:49 +00:00
Sam Leffler
ae8880fdce Don't clock the state machine in various cases when roaming is set
to manual; this helps keep wpa_supplicant in sync.
2005-06-07 23:31:36 +00:00
Sam Leffler
6aa57182d3 WPA/802.11i interoperability fixes:
o only include capabilities word in the WPA ie when non-zero and
  not preauth
o always include the capabilities in the RSN ie

Obtained from:	Atheros
2005-06-07 00:08:48 +00:00
Sam Leffler
96d8846397 add force flag to enmic/demic crypto api for use in xmit fragmentation
and h/w mic verification

Reviewed by:	avatar
2005-06-06 04:04:38 +00:00
Sam Leffler
dd70e17b12 Revise crypto api lightly to improve group key handling:
o don't pre-assign key index to the global key table entries so device
  has a chance to decide what to use
o make ieee80211_crypto_newkey take the desired flags as an argument
  instead of wacking the key structure directly; this eliminates a
  bunch of code warts
o add a new flag IEEE80211_KEY_GROUP to indicate a key is a WPA Group
  key so devices don't need to guess (temporarily add this flag in the
  ioctl code until we can get wpa_supplicant+hostapd updated)
o shuffle IEEE80211_KEY_* bits to move flags used internally to the high
  nibble of the flags word

Reviewed by:	Tai-hwa Liang
2005-04-12 17:55:13 +00:00
Sam Leffler
0942c81c7a remove extern from function decls 2005-04-04 04:27:20 +00:00
Sam Leffler
1f29887956 change ieee80211_input to return the frame type or -1 2005-04-04 02:32:56 +00:00
Sam Leffler
0fc5fe1218 pass re-association events up using a new message type 2005-03-29 19:36:42 +00:00
Sam Leffler
c9a4bb99b0 when WPA is enabled discard association requests w/o a WPA ie
Submitted by:	Divy Le Ray
2005-03-26 07:15:34 +00:00
Sam Leffler
d6ec172c3a don't include wme ie in probe request frames; it was meant for probe response
frames--move it there

Noticed by:	Ghislain Mary
Submitted by:	Michael Wong
2005-03-26 07:11:31 +00:00
Sam Leffler
bd40429e3d correct comparison for null ptr
Noticed by:	Coverity Prevent analysis tool
2005-03-16 20:42:00 +00:00
Sam Leffler
6edf09a6e9 avoid potential array index by -1
Noticed by:	Coverity Prevent analysis tool
2005-03-16 20:40:48 +00:00
Sam Leffler
20098591be eliminate use after free in debug code
Noticed by:	Coverity Prevent analysis tool
2005-03-16 20:39:05 +00:00
Sam Leffler
0796482dd1 kill dead code
Noticed by:	Coverity Prevent analysis tool
2005-03-16 20:35:23 +00:00
Sam Leffler
48b0a5be74 honor any desired bssid when creating an ibss
Prodded by:	David Young
Obtained from:	netbsd
2005-03-08 17:04:14 +00:00
Bill Paul
c788ca3e3c Recently, it was reported to me that you could provoke a double fault
panic with the NDISulator if you did "ifconfig ndis0 10.0.0.1/24,"
whereas "ifconfig ndis0 10.0.0.1/24 up" worked fine. The double fault
was caused by the ifconfig thread running out of kernel stack space.
(This was partly due to the NDIsulator using a couple of big buffers on
the stack, but even after fixing that the double fault persisted.)

It turns out that ndis_init() is called in both cases, but in the first
case the code path passes through ieee80211_ioctl(), and it turns out
ieee80211_ioctl() consumes a whopping 2400 bytes of stack space.
Apparently, gcc -O2 causes the ieee80211_ioctl_get80211() routine to
be inlined into ieee80211_ioctl(), and for some reason which I do not
fully understand, this causes ieee80211_ioctl() to consume an extra 2K
of stack space.

To prevent this overly agressive optimization, ieee80211_ioctl_get80211()
is now declared with __attribute__ ((noinline)). With this change,
ieee80211_ioctl() now only reserves about 200 bytes of stack instead of 2400.
2005-03-03 17:35:05 +00:00
Sam Leffler
a0cc3f8558 mark timestamp for pending fragments
Noticed by:	Jeffrey D. Chung
2005-02-23 04:52:30 +00:00
Sam Leffler
b4b64678d0 rev 1.19 fixed wpa supplicant but broke wpa authenticator; when operating
as an authenticator need to always check for the unicast key in the node
(as was the case before)

Submitted by:	Divy Le Ray
2005-02-10 17:00:48 +00:00
Sam Leffler
f9cd9174fa propagate state kept in the bss node when re-creating the node
on state transitions; this is a stopgap measure, need to rethink
how we do management of this state

Identified by:	Divy Le Ray
2005-02-10 16:59:04 +00:00
Sam Leffler
cb212bbc75 correct check for unicast key being setup; wpa_supplicant in particular
uses only the global key state so looking in the per-node key slot is wrong

Submitted by:	Tai-hwa Liang
2005-02-03 16:21:07 +00:00
Sam Leffler
badaf7bbb2 supply a default ic_reset method for drivers; the ioctl code expect this
method to always be setup

Submitted by:	Tai-hwa Liang
2005-01-27 17:39:17 +00:00
Sam Leffler
49a152366e update node reference count debug msgs to include the node address
since the mac address may not be sufficient to uniquely identify a node
2005-01-24 20:50:20 +00:00
Sam Leffler
5aa17efa69 clear IEEE80211_F_WMEUPDATE when building the initial beacon frame so we
don't do an update on the first beacon
2005-01-24 20:41:12 +00:00
Sam Leffler
2c21ffc8f5 noop change so RUN->RUN transition isn't considered invalid
(it happens on ibss merge)
2005-01-24 20:39:29 +00:00
Sam Leffler
5a11fbca83 add macros to convert between txop's and usecs 2005-01-24 20:38:26 +00:00
Sam Leffler
2ffc548f43 o clarify that beacon interval settings are in TU's, not ms
o add macros to convert between TU's and ms
2005-01-24 19:39:07 +00:00
Sam Leffler
acc4f7f50c statically allocate the station/neighbor node table; the deferred
allocation scheme introduced a race condition during device state
transitions
2005-01-24 19:32:10 +00:00
Sam Leffler
a8b16e8727 handle potential stale values of bssid in neighbor nodes that
can occur after an ibss merge

Submitted by:	David Young
2005-01-22 20:33:37 +00:00
Sam Leffler
4ef04d32f3 when ssid suppression is enabled don't respond to probe requests
unless our ssid is specified
2005-01-22 20:31:22 +00:00
Sam Leffler
e5a96ac7fb be consistent in naming inactivity timers;
net.wlan.X.inact -> net.wlan.X.inact_run
2005-01-22 20:29:23 +00:00
Sam Leffler
a88be5f1ae o replace out-of-line copy of FCS w/ a flag that indicates the
frame includes FCS (requires applications to be updated, but since
  we weren't doing the out-of-line FCS stuff anyway app changes
  were needed already)
o add a flag to indicate padding exists between the 802.11 header and
  the payload (e.g. for Atheros cards)
o diff reducation against netbsd

MFC after:	1 week
2005-01-22 20:12:05 +00:00
Sam Leffler
44acc00dda when a station is timed out for inactivity, remove it from the table
so it isn't considered again
2005-01-20 02:59:21 +00:00
Sam Leffler
ce64703289 explicitly avoid timing out ourself due to inactivity; it
can easily happen if the bss is quiet
2005-01-20 02:54:18 +00:00
Sam Leffler
90d0d0366b fix refcnt leak in adhoc mode: entries in the neighbor table
created due to rx'd frames had an extra reference
2005-01-20 02:53:11 +00:00
Sam Leffler
a84679cd18 remove debug msg from ieee80211_iterate_nodes; it makes logs very noisy
as onoe rate control invokes this once a second
2005-01-18 20:35:39 +00:00
Sam Leffler
29d368a780 avoid possible null pointer deref when refcnt debugging is enabled; the
node may be orphaned

Submitted by:	Tai-hwa Liang
2005-01-18 20:34:22 +00:00
Sam Leffler
96acc1b61c Explicitly ignore ibss merge requests when the node is ic_bss. This can
happen on the first management frame received from a neighbor; we assume
any merge candidate will send more frames and those should be processed
with a suitable table entry.

Stepped on by:	Tai-hwa Liang
2005-01-18 20:30:16 +00:00
Sam Leffler
3fcfbbfa76 Simplify the logic for checking the scan candidates at the end of a scan.
Hold a lock on the table instead of futzing with reference counts which
was potentially dangerous except drivers were quiescent while we did this
so the table contents never changed.  Disable the hack logic for removing
scan candidates with multiple association failures; it's never done the
right thing and will be fixed correctly with background scanning goes in.
2005-01-18 20:21:29 +00:00
Sam Leffler
5784a3714a correct logic that caused beacon frames received in ibss mode to be
discarded when not scanning
2005-01-18 20:07:44 +00:00
Sam Leffler
44c72e4299 move beacon/probe response counting down to after we've decided whether or
not we're going to process the frame; this makes the counters reflect frames
actually processes instead of received (discarded frames were already counted)
2005-01-18 20:04:51 +00:00
Sam Leffler
c75ac46947 when scanning is interrupted reset state so table entries go in the station
table and not the scan table

Noticed by:	Tai-hwa Liang
2005-01-18 19:59:40 +00:00
Sam Leffler
98ff62638d do fixed rate check when considering if a scan candidate is suitable so when
it's time to join the bss we can't get an error
2005-01-18 19:52:36 +00:00
Sam Leffler
ef92bcdc97 Correct scan candidate selection logic for dual-band devices: prefer
candidate on 5Ghz channel to candidate on 2Ghz channel only when the
rssi are comparable (wasn't considering rssi).
2005-01-01 17:48:27 +00:00
Sam Leffler
db966c8b2b remove netbsd rcsid lines; they are way out of date and we appear to be
diverging too much to make tracking these files worthwhile
2004-12-31 22:44:26 +00:00
Sam Leffler
1f1d781074 bump copyright for 2005 2004-12-31 22:42:38 +00:00
Sam Leffler
2045f69945 fixup inactivity timers:
o ic_inact_auth is a bad name, it's the inactivity threshold
  for being associated but not authorized; use it that way
o reset ni_inact when switching inactivity thresholds to
  minimize the race against the timer (don't want to lock
  for this stuff)
o change the inactivity probe threshold from a one-shot to
  cover a range: when below this threshold but not expired
  send a probe each inactivity interval; should probably
  guard against the interval being turned way down as this
  could cause us to spam the net with probes
2004-12-31 22:05:13 +00:00
Sam Leffler
5e923d2ebd Relearn how WPA keying is supposed to work and fix WPA+WME while
we're at it:
o WPA/802.11i has a unicast key and a group key; in station mode
  everything is sent with the unicast key--we were consulting the
  destination mac address and incorrectly using the group key
o (perpetuate fallback use of the default tx key to maintain
  compatibility with the way wpa_supplicant works)
o correct EAPOL encryption logic to check unicast key instead
  of assuming other state implies this
o move QoS encapsulation up to before enmic work so TKIP has the
  information required to calculate the pseudo-header
o do not do QoS-encapsulation of EAPOL frames as some ap's do the
  wrong thing with such frames (may need to revisit this if ap's
  start dropping non-QoS frames from stations assoc'd with QoS)
o move ieee80211_mbuf_adjust closer to its caller
2004-12-31 21:54:53 +00:00
Sam Leffler
7076eda0b5 disable default use of wme until we can sort out interoperability issues;
users that want it can explicitly enable it
2004-12-31 21:48:15 +00:00
Sam Leffler
a95fa8d386 s/inline/__inline/ 2004-12-31 21:30:42 +00:00
Sam Leffler
736b3dc32e compare pointers against NULL 2004-12-31 21:28:41 +00:00
Sam Leffler
b8fcf54640 make ap mode sta association debug msg as informative as sta mode 2004-12-31 21:27:53 +00:00
Sam Leffler
624a1bdb63 do 11g erp station management in turboG mode too 2004-12-31 21:25:28 +00:00
Sam Leffler
3d07392995 check if the node/station table is already present before creating one; this
can happen on an ibss merge
2004-12-31 21:22:12 +00:00
Sam Leffler
3ea67c5431 include phy mode in scan debug msg 2004-12-31 21:19:59 +00:00
Sam Leffler
380c5fa9ba accept IEEE80211_KEYIX_NONE for a default tx key 2004-12-31 21:13:35 +00:00
Sam Leffler
65e278a877 don't return prematurely from processing a beacon or probe response frame
when associated; this corrects a problem where doing a scan while associated
caused the associated ap to sometimes not be included in the scan set
2004-12-31 21:11:59 +00:00
Sam Leffler
c0fa32ce0b change ieee80211_parse_wmeparams to return a unique value when the ie
is invalid so we can distinguish this from needing a parameter update;
fixes dynamic update of wme parameters
2004-12-31 21:09:43 +00:00
Sam Leffler
6b31278104 remove stray \n from debug msg 2004-12-31 21:05:05 +00:00
Sam Leffler
8116d318fc clear wep bit in 802.11 header after crypto decap so packet
capture doesn't see it
2004-12-31 21:04:05 +00:00
Sam Leffler
da615e957d o add net.wlan.X.driver_caps mib variable for setting the driver capabilities
flags for testing
o debug msg consistency fixups
2004-12-31 21:01:41 +00:00
Sam Leffler
ecca7ea2ee correct pseudo-mic header calculation for QoS frames 2004-12-31 20:59:03 +00:00
Sam Leffler
f287c95b86 whitespace/debug msg fixups 2004-12-31 20:58:06 +00:00
Sam Leffler
dfefa312d9 add ieee80211_hdrspace and ieee80211_anyhdrspace to calculate the space
for an ieee80211 header taking into account padding requirements
2004-12-31 20:56:32 +00:00
Sam Leffler
4e844c9453 correct header length calculations on tx path for QoS-encapsulated frames
when IEEE80211_F_DATAPAD is set (e.g. ath); must use ieee80211_hdrspace
instead of ieee80211_hdrsize
2004-12-31 20:51:41 +00:00
Sam Leffler
7432b7cc84 const'ify ivp reference 2004-12-31 20:44:15 +00:00
Sam Leffler
fc508e8e4f add/fixup debug msgs 2004-12-31 20:42:51 +00:00
Sam Leffler
68f5ddcd2e s/inline/__inline/ 2004-12-31 20:39:41 +00:00
Sam Leffler
8da7b74f9c expose ieee80211_phymode_name for use in debug msgs 2004-12-31 20:38:48 +00:00
Sam Leffler
1034272d55 correct module dependency 2004-12-13 18:26:13 +00:00
Sam Leffler
169b73b33a correct module dependency 2004-12-13 18:12:26 +00:00
Sam Leffler
472f08ca8f cover up the landmine until there's a proper solution 2004-12-13 04:26:36 +00:00
Sam Leffler
db4b31b04c do not clear the global key cache when reaching the INIT state 2004-12-12 05:00:13 +00:00
Sam Leffler
868a7d0eab remove module dependency on rc4; it's not needed any more 2004-12-12 00:28:41 +00:00
Sam Leffler
b8d2606bae fix wep key seting: ENETRESET is the code to return to signal the driver
should push software state to the hardware (was ERESTART which caused the
system call to be retried)

Submitted by:	Tor Egge
2004-12-10 16:35:37 +00:00
Sam Leffler
1657488232 fixup printf arguments for 64-bit machines 2004-12-08 22:34:07 +00:00
Sam Leffler
8a1b9b6ad4 Update 802.11 support; too much new functionality to fully describe
here but it includes completed 802.11g, WPA, 802.11i, 802.1x, WME/WMM,
AP-side power-save, crypto plugin framework, authenticator plugin framework,
and access control plugin frameowrk.
2004-12-08 17:26:47 +00:00
Robert Watson
af5e59bf28 Add a new network interface flag, IFF_NEEDSGIANT, which will allow
device drivers to declare that the ifp->if_start() method implemented
by the driver requires Giant in order to operate correctly.

Add a 'struct task' to 'struct ifnet' that can be used to execute a
deferred ifp->if_start() in the event that if_start needs to be called
in a Giant-free environment.  To do this, introduce if_start(), a
wrapper function for ifp->if_start().  If the interface can run MPSAFE,
it directly dispatches into the interface start routine.  If it can't
run MPSAFE, we're running with debug.mpsafenet != 0, and Giant isn't
currently held, the task is queued to execute in a swi holding Giant
via if_start_deferred().

Modify if_handoff() to use if_start() instead of direct dispatch.
Modify 802.11 to use if_start() instead of direct dispatch.

This is intended to provide increased compatibility for non-MPSAFE
network device drivers in the presence of Giant-free operation via
asynchronous dispatch.  However, this commit does not mark any network
interfaces as IFF_NEEDSGIANT.
2004-07-27 23:20:45 +00:00
Max Laier
02b199f158 Link ALTQ to the build and break with ABI for struct ifnet. Please recompile
your (network) modules as well as any userland that might make sense of
sizeof(struct ifnet).
This does not change the queueing yet. These changes will follow in a
seperate commit. Same with the driver changes, which need case by case
evaluation.

__FreeBSD_version bump will follow.

Tested-by:	(i386)LINT
2004-06-13 17:29:10 +00:00
Poul-Henning Kamp
41ee9f1c69 Add some missing <sys/module.h> includes which are masked by the
one on death-row in <sys/kernel.h>
2004-05-30 17:57:46 +00:00
Andre Oppermann
ba99a9b120 Link state change notification of ethernet media to the routing socket.
o The ieee80211_media_status() function updates the ifi_link_state field
  and calls rt_ifmsg() to notify listeners on the routing socket.

Approved by:	sam
2004-05-05 15:48:06 +00:00
Sam Leffler
fb8e945823 Resolve the issue of whether frames have FCS or not. Frame data does not
include FCS; if you want to provide it you can put it in the header.

Submitted by:	David Young
2004-04-05 22:13:21 +00:00
Sam Leffler
3055cc14c4 eliminate nested include by making MALLOC_DECLARE conditional on the
inclusion of <sys/malloc.h>

Submitted by:	bde
2004-04-05 22:10:26 +00:00
Sam Leffler
f3fc4ae54b add definitions for WME, WPA (and WPA2), and miscellaneous other stuff
that's coming soon

Obtained from:	madwifi
2004-04-05 17:47:40 +00:00
Sam Leffler
566a65385f export the malloc type M_80211_NODE for drivers that override the node
allocation routines
2004-04-05 04:17:03 +00:00
Sam Leffler
32346d607a make malloc tag for ieee80211_node more recognizable 2004-04-05 04:15:55 +00:00
Sam Leffler
36c6538b7f Change handling of probe response frames. Previously we always dropped the
refcnt on the node but left it in the node table.  This allows the node table
to hold the results of scanned ap's but for ibss scans left nodes w/o any
driver-private state setup and/or a bad refcnt (when the nodes were timed
out they were prematurely discarded).  Now we treat nodes identified for ap
scanning as before but force nodes discovered when scanning for ibss neighbors
to have complete/proper state and hold the refcnt on the node.  Any other
nodes created because of these frames are discarded directly (need to optimize
this case to eliminate various work that's immediately discarded).
2004-04-02 23:35:24 +00:00
Sam Leffler
750d6d0c60 fix adhoc/ibss operation for drivers that require host support (e.g. ath):
o remove IEEE80211_C_RCVMGT capability
o on transmit craft new nodes as needed using new ieee80211_find_txnode routine
o add ieee80211_find_txnode routine to lookup a node by mac address and
  if not present create one when operating in ibss/ahdemo mode; new nodes
  are dup'd from bss and the driver is told to treat the node as if a new
  association has been created so driver-private state (e.g. rate control
  handling) is setup

Obtained from:	netbsd (basic idea)
2004-04-02 23:25:39 +00:00
Sam Leffler
6f3f5a1170 always free node reference when processing a probe request frame; was
conditionally doing an unref if operating in adhoc mode which turns
out to be wrong
2004-04-02 23:12:45 +00:00
Sam Leffler
694dca643b o change ieee80211_dup_bss to inherit explicit data from ic_bss instead of
blindy copying the node contents; this turns out to be a bad idea as we
  add more state in the node for things like WPA
o track node allocation failures in ieee80211_dup_bss instead of the callers

Obtained from:	madwifi
2004-04-02 23:09:24 +00:00
Sam Leffler
c64bfa0f8f track node allocation failure stats in ieee80211_alloc_node instead
of each caller

Obtained from:	madwifi
2004-04-02 23:06:41 +00:00
Sam Leffler
410ca74bb8 replace explicit malloc/free with MALLOC/FREE for portability
Obtained from:	madwifi
2004-04-02 23:02:24 +00:00
Sam Leffler
b4c5a90fee extract node matching logic into new ieee80211_match_bss routine for use
in background/incremental scanning

Obtained from:	madwifi
2004-04-02 23:00:30 +00:00
Sam Leffler
849b898054 diff reduction against madwifi 2004-04-02 22:56:09 +00:00
Sam Leffler
a6381c54bb when processing beacon/probe response frames capture "is probe" in a
variable to improve code legibility since we're going to use it more
in forthcoming mods

Obtained from:	madwifi
2004-04-02 22:54:07 +00:00
Sam Leffler
4bd067c5a1 add a case of IEEE80211_ELEMID_IBSSPARMS so the statistic on unknown
elements is more meaningful (will add more with WPA merge)

Obtained from:	madwifi
2004-04-02 22:50:31 +00:00
Sam Leffler
7aa402898f when doing internal bridging free the node instead of just dropping the
reference for consistency (explicit refcounting is discouraged)

Obtained from:	madwifi
2004-04-02 22:48:52 +00:00
Sam Leffler
9089c48c13 when receiving a frame w/ a bad version number don't unref the node; the
driver is responsible for that

Obtained from:	madwifi
2004-04-02 22:47:11 +00:00
Sam Leffler
fce2da8b66 insure basic rate bit is set in derived rate set; this
works around a protocol/firmware problem with some versions found
in hermes/prism cards
2004-04-02 20:22:25 +00:00
Sam Leffler
63beab8306 diff reduction against madwifi/p4 2004-04-02 20:19:20 +00:00
Sam Leffler
2e79ca9762 o add support for controlling the power of transmitted frames
o add support for controlling the 11g protection mechanism used
  to protect OFDM frames in a mixed 11b/g network

Reviewed by:	imp
2004-03-30 22:57:57 +00:00
Sam Leffler
b2e9569143 Only call if_init when doing SIOCSIFADDR if the interface is not marked
up (IFF_UP).  This eliminates extraneous AP scanning.

Reviewed by:	imp
2004-03-30 22:53:52 +00:00
Maxime Henrion
45c7aff75a Add explicit dependency on "ether", since we use ether_ifattach(). 2004-03-16 19:25:55 +00:00
Atsushi Onoe
e249fdbedb Change WI_RID_SCAN_RES compatibility interface to return the result after
active scan is completed just as WI_RID_READ_APS.
This fixes wicontrol -L for ath(4) and awi(4) to have results even if
the driver cannot associate any APs.
2004-01-19 05:25:43 +00:00
Atsushi Onoe
4844aa7d12 Add support for FH phy, which will be used by awi driver.
Also some if_media constants to indicate operational mode are changed
to bitmasks to reduce diffs from NetBSD.
2004-01-15 08:44:27 +00:00
Sam Leffler
6f161f0342 Handle SIOCSIFMTU ioctl directly so we can apply 802.11-specific bounds.
Note that the min is actually constrained to IF_MINMTU by the if layer.
2004-01-13 06:22:55 +00:00
Sam Leffler
c6b688c403 Sync with netbsd:
o #ifdef _KERNEL the fallback definition for DLT_IEEE802_11_RADIO
o fix many comments
o rename antenna stuff and fix units/reference signal
o change IEEE80211_RADIOTAP_DBM_TX_POWER from unsigned 16-bit value
  to a signed 8-bit value
o change IEEE80211_RADIOTAP_FLAGS from 16 bits to 8 bits to simplify
  padding requirements
o drop IEEE80211_RADIOTAP_TIME
o change IEEE80211_RADIOTAP_ANTENNA from 16 bits to 8 bits
o drop IEEE80211_RADIOTAP_PAD
o add channel flag definitions for outside the kernel so radiotap
  doesn't depend on stuff in ieee80211*.h

Obtained from:	NetBSD
2003-12-28 06:57:28 +00:00
Sam Leffler
93685685f4 o insure the current channel is in a good state before starting an AP scan
o reject scan requests for a device that isn't marked up

This fixes a problem where requesting a scan before marking the device
up would cause a panic because the current channel was set to "any" (0xffff).
2003-11-13 05:23:58 +00:00
Sam Leffler
bca1062ba5 fix typo that broke AP scanning by BSSID
Submitted by:	Len Widra
2003-11-09 23:36:46 +00:00
Brian Feldman
5c8bb90bf7 Fix a reversed suser(9) in SIOCG80211:IEEE80211_IOC_WEPKEY which prevents
root from reading the wireless card's WEP keys, but allows non-root.
2003-11-05 04:16:48 +00:00
Brooks Davis
9bf40ede4a Replace the if_name and if_unit members of struct ifnet with new members
if_xname, if_dname, and if_dunit. if_xname is the name of the interface
and if_dname/unit are the driver name and instance.

This change paves the way for interface renaming and enhanced pseudo
device creation and configuration symantics.

Approved By:	re (in principle)
Reviewed By:	njl, imp
Tested On:	i386, amd64, sparc64
Obtained From:	NetBSD (if_xname)
2003-10-31 18:32:15 +00:00
Sam Leffler
59571d2ba6 fix station mode breakage (repeat after me: "test every change, no
matter how small...")
2003-10-17 23:59:11 +00:00
Sam Leffler
1be50176db add statistics for all failures and/or abnormal events; still need
to add per-node statistics
2003-10-17 23:15:30 +00:00
Sam Leffler
627200f847 fixup debug msgs 2003-10-17 22:15:26 +00:00
Sam Leffler
b83d21129e include FH/DS parameters element in probe response frames 2003-10-17 22:09:20 +00:00
Sam Leffler
8b92bf47b0 correct comment 2003-10-17 21:56:42 +00:00
Sam Leffler
7f7ecba47e o add capability to indicate if device receives all management frames
o use recv mgmt capability to decide if outbound frames should be
  discarded if no node table entry is present
2003-10-17 21:54:59 +00:00
Sam Leffler
1e343b38be parameterize locking to improve portability and possible
change to different locking strategies
2003-10-17 21:41:52 +00:00
Sam Leffler
303ebc3c87 Try yet again to deal with timing out nodes. We cannot hold the
node lock while sending a management frame as this will potentially
result in a LOR with a driver lock.  This doesn't happen for the
Atheros driver but does for the wi driver.  Use a generation number
to help process each node once when scanning the node table and
drop the node lock if we need to timeout a node and send a frame.
2003-09-26 17:00:44 +00:00
Sam Leffler
ef39d4be37 Correct rate set negotiation when operating as a station: if the
AP has basic rates that we do not support then ignore them instead
of marking the rate set in error.

This fixes an 11b station associating with an 11g/b AP.
2003-09-26 16:54:55 +00:00
Sam Leffler
37c150c4a6 allocate node table entries with a specific malloc type 2003-09-26 16:52:12 +00:00
Sam Leffler
13604e6bad correct spelling of IEEE80211_IOC_RTSTHRESHOLD 2003-09-26 16:48:39 +00:00
Sam Leffler
d1e61976a0 Generalize the per-node RSSI data so drivers can do more interesting
things than record a single value.

o add a per-node method for returning the "current RSSI" for a node
o create a default method that returns ni_rssi which is the rssi for
  the last received frame
o use the per-node "get rssi" method to return data for the RID's
  submitted by wicontrol, et. al.

Loosely based on work by Tom Marshall <tommy@home.tig-grr.com> for MADWIFI.
2003-09-15 22:28:07 +00:00
Sam Leffler
18f897abe0 Change input handling to not expect drivers to filter short frames.
In particular, let drivers send up control frames so we can dispatch
them to bpf in monitor mode.

This is the first (small) step to adding more functionality such as
power save mode.
2003-09-15 19:38:29 +00:00
Sam Leffler
993338b6ab add definitions for various control frames and a minimum-sized frame that
we use to define IEEE80211_MIN_LEN; the minimal length for frames drivers
may pass up into the 802.11 layer
2003-09-15 19:36:34 +00:00
Sam Leffler
4f2e09c4b2 Honor the short preamble capability/state flag when calculating the
capabilities for outbound management frames.  But beware of sending
this when operating on 5GHz channels; some 11a AP's reject association
requests if this bit is set in the capabilities listed.

Obtained from:	MADWIFI (with modifications)
2003-09-14 22:34:24 +00:00
Sam Leffler
fba3db9f57 short preamble capability is not just for 11g; mark IEEE80211_F_SHPREAMBLE
regardless of the operating mode

Obtained from:	MADWIFI
2003-09-14 22:32:18 +00:00
Sam Leffler
95a22a9a71 Experimental bpf capture format for 802.11 devices. The link layer
type belongs in net/bpf.h but we keep it here for the moment.

P:
Submittep by:
Obtained from:	David Young <dyoung@pobox.com>
2003-09-05 22:19:32 +00:00
Sam Leffler
7997bcbc55 o correct logic that checks frame size to decide if a cluaster is needed
o add an assertion to check the max possible packet size

Noticed by:	David Young <dyoung@pobox.com>
2003-09-01 02:55:09 +00:00
Sam Leffler
0a915fad5d MFp4 changes to fix locking issues and correct reference
count handling of station entries in hostap mode:

Input path:

o driver is now expected to find the node associated with the
  sender of a received frame; use ic_bss if none is located
o driver passes the (referenced) node into ieee80211_input for
  use within the wlan module and is responsible for cleaning up
  on return
o the antenna state is no longer passed up with each frame; this
  is now considered driver-private state and drivers are responsible
  for keeping it in the driver-private part of a node

Output path:

Revamp output path for management frames to eliminate redundant
locking that causes problems and to correct reference counting
bogosity that occurs when stations are timed out due to inactivity
(in AP mode).  On output the refcnt'd node is stashed in the pkthdr's
recvif field (yech) and retrieved by the driver.  This eliminates
an unref/ref scenario and related node table unlock/lock due to the
driver looking up the node.  This is particularly important when
stations are timed out as this causes a lock order reversal that
can result in a deadlock.  As a byproduct we also reduce the overhead
for sending management frames (minimal).  Additional fallout from
this is a change to ieee80211_encap to return a refcn't node for
tieing to the outbound frame.  Node refcnts are not reclaimed until
after a frame is completely processed (e.g. in the tx interrupt
handler).  This is especially important for timed out stations as
this deref will be the final one causing the node entry to be
reclaimed.

Additional semi-related changes:
o replace m_copym use with m_copypacket (optimization)
o add assert to verify ic_bss is never free'd during normal operation
o add comments explaining calling conventions by drivers for frames
  going in each direction
o remove extraneous code that "cannot be executed" (e.g. because
  pointers may never be null)
2003-08-19 22:17:04 +00:00
Sam Leffler
2692bb26d4 Delay creating ic_bss until after the super-class has a chance
to override the method pointers for manipulating nodes; this fixes
a problem where the ic_bss node was not being created properly
for the ath driver causing the driver to scribble on random memory.

Noticed by:	David Young <dyoung@pobox.com>
2003-08-13 22:09:44 +00:00
Sam Leffler
dd0e6ea6b0 Use IEEE80211_RATE_MAXSIZE instead of IEEE80211_RATE_SIZE to validate the
rate set element id from an AP.  This allows stations to associate with
AP's that violate the 802.11 spec by sending >8 rates.  This corrects a
recent regression; older code did likewise.
2003-08-13 21:49:35 +00:00
Sam Leffler
2bbe529d9c add monitor mode 2003-07-21 02:49:42 +00:00
Sam Leffler
a11c9a5cc2 o change ieee80211_new_state handling to use a proper method that drivers
override in their sub-class; this eliminates the hack of interpreting the
  EINPROGRESS return value to mean "don't do any of the normal work"
o correct active scanning so the first channel is only scanned once and so
  per-channel passive mode is properly honored
o expose 802.11 FSM state names so every driver doesn't keep a private copy
o eliminate node parameter to ieee80211_begin_scan; it was not being used
2003-07-20 21:36:08 +00:00
Sam Leffler
58f40303c4 insure ic_bss always has a "valid" channel; avoids problems where users could
query the state of a card and find a null channel since allocating the node
left ni_chan zero
2003-06-29 20:13:38 +00:00
Sam Leffler
b9ee58c4af use proper length to copy data for WI_RID_DESIRED_SSID (was smashing
ic_des_chan that immediately follows)
2003-06-29 20:12:17 +00:00
Sam Leffler
8be0d57010 add safeguard against (bogus) null channel parameter 2003-06-29 20:10:54 +00:00
Sam Leffler
7535e66acd revise copyright notices per discussion with Atsushi Onoe <onoe@sm.sony.co.jp> 2003-06-27 05:13:52 +00:00
Sam Leffler
c032abb595 fix typo
Submitted by:	"Norman Diamond \(ITS\)" <n_diamond@its.jp>
2003-06-27 02:53:00 +00:00
Sam Leffler
a296d8af2f add comment 2003-06-26 22:11:19 +00:00
Sam Leffler
1300bbb70e fix tcpdump -y IEEE802_11; NBPFILTER was a holdover from netbsd compatibility 2003-06-25 17:42:36 +00:00
Sam Leffler
1a1e1d2157 new 802.11 layer:
o code reorg (relative to old netbsd-derived code) for future growth
o drivers now specify available channels and rates and 802.11 layer handles
  almost all ifmedia actions
o multi-mode support for 11a/b/g devices
o 11g protocol additions (incomplete)
o new element id additions (for other than 11g)
o node/station table redone for proper locking and to eliminate driver
  incestuousness
o split device flags and capabilities to reduce confusion and provide room
  for expansion
o incomplete power management infrastructure (need to revisit)
o incomplete hooks for software retry
o more...
2003-06-23 16:55:01 +00:00