Commit Graph

213 Commits

Author SHA1 Message Date
Sam Leffler
d50ea6acfa Process tx callbacks when draining the tx q; this fixes a problem
where a device timeout that occurs with a mgt frame on the tx q
will leave the net80211 layer w/o any way to make progress.

Reviewed by:	thompsa, sephe
Approved by:	re (hrs)
2007-06-24 01:57:20 +00:00
Sam Leffler
68e8e04e93 Update 802.11 wireless support:
o major overhaul of the way channels are handled: channels are now
  fully enumerated and uniquely identify the operating characteristics;
  these changes are visible to user applications which require changes
o make scanning support independent of the state machine to enable
  background scanning and roaming
o move scanning support into loadable modules based on the operating
  mode to enable different policies and reduce the memory footprint
  on systems w/ constrained resources
o add background scanning in station mode (no support for adhoc/ibss
  mode yet)
o significantly speedup sta mode scanning with a variety of techniques
o add roaming support when background scanning is supported; for now
  we use a simple algorithm to trigger a roam: we threshold the rssi
  and tx rate, if either drops too low we try to roam to a new ap
o add tx fragmentation support
o add first cut at 802.11n support: this code works with forthcoming
  drivers but is incomplete; it's included now to establish a baseline
  for other drivers to be developed and for user applications
o adjust max_linkhdr et. al. to reflect 802.11 requirements; this eliminates
  prepending mbufs for traffic generated locally
o add support for Atheros protocol extensions; mainly the fast frames
  encapsulation (note this can be used with any card that can tx+rx
  large frames correctly)
o add sta support for ap's that beacon both WPA1+2 support
o change all data types from bsd-style to posix-style
o propagate noise floor data from drivers to net80211 and on to user apps
o correct various issues in the sta mode state machine related to handling
  authentication and association failures
o enable the addition of sta mode power save support for drivers that need
  net80211 support (not in this commit)
o remove old WI compatibility ioctls (wicontrol is officially dead)
o change the data structures returned for get sta info and get scan
  results so future additions will not break user apps
o fixed tx rate is now maintained internally as an ieee rate and not an
  index into the rate set; this needs to be extended to deal with
  multi-mode operation
o add extended channel specifications to radiotap to enable 11n sniffing

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

This work is based on contributions by Atheros, kmacy, sephe, thompsa,
mlaier, kevlo, and others.  Much of the scanning work was supported by
Atheros.  The 11n work was supported by Marvell.
2007-06-11 03:36:55 +00:00
Sam Leffler
515d617e8d update copyrights to 2007 and convert to be 2-clause bsd-only 2007-06-06 15:49:16 +00:00
Sam Leffler
6a1d2520e3 disable taskqueue_drain calls on transition to INIT state; we need to
find another way to do this as we cannot hold the softc mtx across
these calls
2007-06-03 02:16:48 +00:00
Sam Leffler
58769f5837 Drain task q items when transitioning to INIT state; this closes a
race seen on smp laptops when suspending where the rx task can be
entered after the interface is detach'd.

NB: use of taskqueue_drain while holding the softc mutex is problematic

Submitted by:	ambrisko
MFC after:	1 month
2007-05-29 16:13:59 +00:00
Sam Leffler
ee7d684055 silence some compiler complaints 2007-05-27 05:38:44 +00:00
Sam Leffler
b298baf298 make dev.ath.N.ledpin have an immediate effect
PR:		kern/111810
Submitted by:	Henrik Brix Andersen <henrik@brixandersen.dk>
MFC after:	1 week
2007-04-23 05:57:06 +00:00
Sepherosa Ziehau
b03cfe2396 - Fix mbuf/node leakage in drivers' raw_xmit().
- For ural(4):
  o  Fix node leakage in ural_start(), if ural_tx_mgt() fails.
  o  Fix mbuf leakage in ural_tx_{mgt,data}(), if usbd_transfer() fails.
  o  In ural_tx_{mgt,data}(), set ural_tx_data.{m,ni} to NULL, if
     usbd_transfer() fails, so they will not be freed again in ural_stop().

Approved by:	sam (mentor)
2007-04-19 13:09:57 +00:00
Robert Watson
cc807dbd0a Remove unnecessary suser() check in the sysctl to set up ath_hal
logging: the sysctl framework will already have checked for privilege
if a sysctl value is being set.

Discussed a long time ago with:	sam
2007-04-10 15:48:45 +00:00
Sam Leffler
1fba0fdc15 Change mtx's to use the formulated name as type so witness does not
complain on nested tx q lock acquisitions when processing the cab q.

MFC after:	2 weeks
2007-03-05 21:56:33 +00:00
Sam Leffler
cd196bb2d5 Kick tx after processing rx'd frames; this fixes latency issues
for processing frames from the power save queue when operating
in ap mode.  This is especially noticeable for realtime data going
to devices like voip phones.

Submitted by:	"J.R. Oldroyd" <jr@opal.com>
MFC after:	2 weeks
2007-03-05 21:53:49 +00:00
Sam Leffler
16d84e0140 don't call ath_reset when processing sysctl's before the device
is marked running; we don't have all the needed state in place

Noticed by:	Hugo Silva <hugo@barafranca.com>
MFC after:	1 week
2007-02-24 23:23:29 +00:00
Sam Leffler
8debcae44f set the antenna switch when fixing the tx antenna using the
dev.ath.X.txantenna sysctl; this is typically what folks
want but beware this has the side effect of disabling rx
diversity

MFC after:	2 weeks
2007-02-24 23:12:58 +00:00
Paolo Pisati
ef544f6312 o break newbus api: add a new argument of type driver_filter_t to
bus_setup_intr()

o add an int return code to all fast handlers

o retire INTR_FAST/IH_FAST

For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current

Reviewed by: many
Approved by: re@
2007-02-23 12:19:07 +00:00
Marius Strobl
c2175ff5ca Change the remainder of the drivers for DMA'ing devices enabled in the
sparc64 GENERIC and the sound device drivers known working on sparc64
to use bus_get_dma_tag() to obtain the parent DMA tag so we can get rid
of the sparc64_root_dma_tag kludge eventually. Except for ath(4), sk(4),
stge(4) and ti(4) these changes are runtime tested (unless I booted up
the wrong kernels again...).
2007-01-21 19:32:51 +00:00
Sam Leffler
c5bebabde1 add compat shim for ath_hal_isgsmsku until the new hal gets committed 2007-01-15 04:26:19 +00:00
Sam Leffler
517eabc6fa save changes for handling 5416/5418 parts 2007-01-15 01:17:44 +00:00
Sam Leffler
724c193aed Add initial support for 900MHz cards like the Ubiquiti SR9:
o eliminate assumptions that half/quarter rate channels on exist in 11a
o handle frequency mapping between hal and net80211; hal gives us freq's
  in the range 2422..2437 that we remap

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

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

Also for sample rate control algorithm:

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

MFC after:	1 month
2006-12-13 19:34:35 +00:00
Sam Leffler
30e218c0a0 clarify shortcut return
Submitted by:	cognet, kevlo
MFC after:	1 week
2006-12-01 16:03:39 +00:00
Sam Leffler
0553a01f53 mark tx/rx descriptors COHERENT; we do not sync changes so on
architectures like arm this is necessary

MFC after:	1 month
2006-11-24 22:45:26 +00:00
Sam Leffler
10b6de5e58 correct diag request to fetch isr state on fatal interrupts
MFC after:	1 week
2006-10-09 23:45:26 +00:00
Sam Leffler
3fe92528af o move ath hal os glue code from the hal to the driver: this code was
part of the hal distribution early on when the hal was built for
  each os but it's been portable for a long time so move the os-specific
  code out (and off the vendor branch)
o correct the copyright on ah_osdep.?; it was mistakenly given a
  restricted license and not a dual-bsd/gpl license
o remove the module api definition as it was never used
o fixup include paths for move of ah_osdep.h

MFC after:	2 weeks
2006-09-18 16:49:15 +00:00
Sam Leffler
5901d2d38a Add support for newer parts that do not require separate keycache
entries for tx+rx mic keys.  This requires a newer hal, but works
fine with the current hal in cvs.

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

MFC after:	1 week
2006-09-18 16:16:02 +00:00
Warner Losh
1a3c917f9d while (0); -> while (0) in multi-line macros 2006-08-17 22:50:33 +00:00
Sam Leffler
6bf62dd1de o add noise floor to stats
o include current tx rate in stats so athstats gets a consistent
  snapshot and doesn't have to make an extra ioctl
o record tx rate for raw frames

MFC after:	3 weeks
2006-08-10 16:31:37 +00:00
Sam Leffler
05680ab622 check return value of ath_tx_dmasetup
Noticed by:	yongari
2006-08-08 16:42:01 +00:00
Sam Leffler
664443d053 raw 802.11 packet transmit support
Joint work with:	Andrea Bittau <a.bittau@cs.ucl.ac.uk>
2006-08-05 05:07:17 +00:00
Sam Leffler
d95eaaf3ed add missing \n's
Submitted by:	avatar@
MFC after:	1 week
2006-07-26 04:09:04 +00:00
Sam Leffler
f3af83f7cf check tim is present in the beacon before defer'ing the mcast buffer bit;
insures we don't do this when operating in adhoc mode

Submitted by:	avatar@
MFC after:	1 week
2006-07-26 03:48:41 +00:00
Sam Leffler
6f48c95642 enable rx of control frames when in monitor mode
Submitted by:	Andrea Bittau <a.bittau@cs.ucl.ac.uk>
MFC after:	1 week
2006-06-26 04:31:36 +00:00
Sam Leffler
622b3fd21c Close race in handling mcast traffic when operating as an ap with
stations in power save: add a new q where mcast frames are stashed
and on beacon update (at DTIM) move frames from the mcast q to the
cabq and start it.  This ensures the cabq is only manipulated in
one place.

Sponsored by:	Hobnob
MFC after:	2 weeks
2006-06-26 03:10:45 +00:00
Sam Leffler
30db812aa9 new stats
MFC after:	1 month
2006-06-23 18:48:08 +00:00
Sam Leffler
465c8d6787 bandaid type coercion for ia64
Submitted by:	marcel
2006-06-07 20:37:14 +00:00
Sam Leffler
f9fc583f17 move hal bus+tag externalization to the bus glue code where it belongs;
this is a noop on all current freebsd architectures

MFC after:	1 month
2006-06-05 17:51:20 +00:00
Sam Leffler
ff046a6c6b add missed calls to bpf_peers_present 2006-06-02 23:14:40 +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
Sam Leffler
6ccb8ea780 quiet tindexbox complaints about passing BUS_SPACE_MAXADDR as
a bus_size_t to bus_dma_tag_create; when PAE is enabled this
does not work

Cluebat by:	scottl
MFC after:	2 weeks
2006-05-08 20:11:09 +00:00
Sam Leffler
34e2d6230c force type coercion for bus tag+handle when calling ath_hal_attach
to ensure we match the type signature; we cannot assume HAL_BUS_TAG
and HAL_BUS_HANDLE correspond to bus_space_tag_t and bus_space_handle_t
(should probably do this for HAL_SOFTC too but leave that for now)

MFC after:	1 month
2006-05-06 23:23:39 +00:00
Sam Leffler
1b409765cf correct type
MFC after:	2 weeks
2006-05-05 03:21:13 +00:00
Sam Leffler
ae2734b68c intercept public safety channels and do explicit mapping of freq->ieee
channel number since we're not ready at the net80211 layer to deal with them;
note this mapping has to match what's done in ieee80211_mhz2ieee

MFC after:	3 days
2006-04-26 16:02:36 +00:00
Sam Leffler
df4d04af01 honor fixed tx antenna when sending beacon frames
Submitted by:	Michael Stevens (from netbsd)
MFC after:	1 week
2006-04-25 22:52:28 +00:00
Sam Leffler
4a3ac3fc61 Improve ath_draintxq debug info: dump the packet as well
as the descriptor and handle the beacon q like other q's

MFC after:	1 month
2006-04-16 18:24:27 +00:00
Sam Leffler
2af90c547b Unbreak cabq handling: check the s/w q, not the h/w q as the frames
have not been passed to the h/w yet.  This remedies watchdog timeout
of buffered multicast frames in hostap mode.

While here eliminate an extraneous check; ieee80211_beacon_update sets
the tim bit based on ncabq != 0 so there's no reason to check it too.

Noticed by:	Christophe Prevotaux
2006-04-16 18:14:01 +00:00
Sam Leffler
a585a9a1bc o add opt_ath.h enable tweaking various config parameters for the driver
without modifying the source code
o default debug msgs and diag support to off

MFC after:	3 days
2006-04-03 18:14:02 +00:00
Sam Leffler
d0d425bf53 correct ni_txrate when using a fixed rate; fixes current rate reporting
MFC after:	3 days
2006-03-09 00:28:44 +00:00
Sam Leffler
ebecf80294 backout 1.136 until we can resolve report that it causes output to stall 2006-02-27 17:20:23 +00:00
Sam Leffler
8fe92b6cf6 fix a race whereby a tx descriptor might get reused before the hardware
is finished with it; this may only occur when the tx queue is setup as
dba-gated but since the fix is cheap apply it to all queues

while here make the queue depth signed for use in assertions

Reviewed by:	apatti
MFC after:	2 weeks
2006-02-24 23:10:08 +00:00