Commit Graph

61 Commits

Author SHA1 Message Date
Sam Leffler
45f856e3ac Cleanup AMPDU handling:
For receive:
o explicitly tag rx frames w/ M_AMPDU instead of passing frames through
  the reorder processing according to the node having HT and the frame
  being QoS data
o relax ieee80211_ampdu_reorder asserts to allow any frame to be passed
  in, unsuitable frames are returned to the caller for normal processing;
  this permits drivers that cannot inspect the PLCP to mark all data
  frames as potential ampdu candidates with only a small penalty
o add M_AMPDU_MPDU to identify frames resubmitted from the reorder q

For transmit:
o tag aggregation candidates with M_AMPDU_MPDU
o fix the QoS ack policy set in ampdu subframes; we only support immediate
  BA streams which should be marked for "normal ack" to get implicit block
  ack behaviour; interestingly certain vendor parts BA'd frames with the
  11e BA ack policy set
o do not assign a sequence # to aggregation candidates; this must be done
  when frames are submitted for transmit (NB: this can/will be handled
  better when aggregation is pulled up to net80211)
2008-09-21 23:00:19 +00:00
Sam Leffler
688fe74d0c reorder RSN/WPA2 ie in beacon and probe response frames to comply
with IEEE802.11-2007 spec

Submitted by:	Chris Zimmermann
2008-07-07 17:24:55 +00:00
Sam Leffler
5c1f7f19b6 Split s/w crypt/mic attributes to allow future hackery; this change
should be a noop.
2008-05-28 23:25:36 +00:00
Sam Leffler
b032f27c36 Multi-bss (aka vap) support for 802.11 devices.
Note this includes changes to all drivers and moves some device firmware
loading to use firmware(9) and a separate module (e.g. ral).  Also there
no longer are separate wlan_scan* modules; this functionality is now
bundled into the wlan module.

Supported by:	Hobnob and Marvell
Reviewed by:	many
Obtained from:	Atheros (some bits)
2008-04-20 20:35:46 +00:00
Kip Macy
2de2af32a0 Add padding for anticipated functionality
- vimage
 - TOE
 - multiq
 - host rtentry caching

Rename spare used by 80211 to if_llsoftc

Reviewed by: rwatson, gnn
MFC after: 1 day
2007-12-07 01:46:13 +00:00
Sam Leffler
f4558c9a6f correct WMM packet classification:
o use TID_TO_WME_AC on vlan tag priority
o ignore ECN bits in DSCP when mapping IP TOS and use TID_TO_WME_AC

MFC after:	3 days
2007-11-23 06:24:57 +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
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
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
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
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
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
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
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
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
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
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
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
667dad55fc consolidate calculation of capabilities ie
Reviewed by:	avatar
MFC after:	2 weeks
2006-02-25 05:36:43 +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
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
a196b35f08 correct handling of dtim for periods > 1
Obtained from:	madwifi
2005-12-05 22:14:13 +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
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
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
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
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
edfa57d0f0 simplify tim callback api
MFC after:	3 days
2005-07-22 17:45:48 +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
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
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
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
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
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
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
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
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
1f1d781074 bump copyright for 2005 2004-12-31 22:42:38 +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
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