296373 |
04-Mar-2016 |
marius |
- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1 builds. - Update newvers.sh to reflect RC1. - Update __FreeBSD_version to reflect 10.3. - Update default pkg(8) configuration to use the quarterly branch.
Approved by: re (implicit) |
256281 |
10-Oct-2013 |
gjb |
Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation
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238633 |
20-Jul-2012 |
adrian |
Add a per-node rate control routine for each rate control module.
For now, the only module implement is 'sample', and that's only partially implemented. The main issue here with reusing this structure in userland is that it uses 'rix' everywhere, which requires the userland code to have access to the current HAL rate table.
For now, this is a very large work in progress.
Specific details:
* The rate control information is per-node at the moment and wrapped in a TLV, to ease parsing and backwards compatibility. * .. but so I can be slack for now, the userland statistics are just a copy of the kernel-land sample node state. * However, for now use a temporary copy and change the rix entries to dot11rate entries to make it slightly easier to eyeball.
Problems:
* The actual rate information table is unfortunately indexed by rix and it doesn't contain a rate code. So the userland side of this currently has no way to extract out a mapping.
TODO:
* Add a TLV payload to dump out the rate control table mapping so 'rix' can be turned into a dot11 / MCS rate. * .. then remove the temporary copy.
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237529 |
24-Jun-2012 |
adrian |
In a complete lack of foresight on my part, my previous commit broke the assumption that ath_softc doesn't change size based on build time configuration.
I picked up on this because suddenly radar stuff didn't work; and although the ath_dfs code was setting sc_dodfs=1, the main ath driver saw sc_dodfs=0.
So for now, include opt_ath.h in driver source files. This seems like the sane thing to do anyway.
I'll have to do a pass over the code at some later stage and turn the radiotap TX/RX structs into malloc'ed memory, rather than in-line inside of ath_softc. I'd rather like to keep ath_softc the same layout regardless of configuration parameters.
Pointy hat to: adrian
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227364 |
08-Nov-2011 |
adrian |
Introduce TX aggregation and software TX queue management for Atheros AR5416 and later wireless devices.
This is a very large commit - the complete history can be found in the user/adrian/if_ath_tx branch.
Legacy (ie, pre-AR5416) devices also use the per-software TXQ support and (in theory) can support non-aggregation ADDBA sessions. However, the net80211 stack doesn't currently support this.
In summary:
TX path:
* queued frames normally go onto a per-TID, per-node queue * some special frames (eg ADDBA control frames) are thrown directly onto the relevant hardware queue so they can go out before any software queued frames are queued. * Add methods to create, suspend, resume and tear down an aggregation session. * Add in software retransmission of both normal and aggregate frames. * Add in completion handling of aggregate frames, including parsing the block ack bitmap provided by the hardware. * Write an aggregation function which can assemble frames into an aggregate based on the selected rate control and channel configuration. * The per-TID queues are locked based on their target hardware TX queue. This matches what ath9k/atheros does, and thus simplified porting over some of the aggregation logic. * When doing TX aggregation, stick the sequence number allocation in the TX path rather than net80211 TX path, and protect it by the TXQ lock.
Rate control:
* Delay rate control selection until the frame is about to be queued to the hardware, so retried frames can have their rate control choices changed. Frames with a static rate control selection have that applied before each TX, just to simplify the TX path (ie, not have "static" and "dynamic" rate control special cased.) * Teach ath_rate_sample about aggregates - both completion and errors. * Add an EWMA for tracking what the current "good" MCS rate is based on failure rates.
Misc:
* Introduce a bunch of dirty hacks and workarounds so TID mapping and net80211 frame inspection can be kept out of the net80211 layer. Because of the way this code works (and it's from Atheros and Linux ath9k), there is a consistent, 1:1 mapping between TID and AC. So we need to ensure that frames going to a specific TID will _always_ end up on the right AC, and vice versa, or the completion/locking will simply get very confused. I plan on addressing this mess in the future.
Known issues:
* There is no BAR frame transmission just yet. A whole lot of tidying up needs to occur before BAR frame TX can occur in the "correct" place - ie, once the TID TX queue has been drained.
* Interface reset/purge/etc results in frames in the TX and RX queues being removed. This creates holes in the sequence numbers being assigned and the TX/RX AMPDU code (on either side) just hangs.
* There's no filtered frame support at the present moment, so stations going into power saving mode will simply have a number of frames dropped - likely resulting in a traffic "hang".
* Raw frame TX is going to just not function with 11n aggregation. Likely this needs to be modified to always override the sequence number if the frame is going into an aggregation session. However, general raw frame injection currently doesn't work in general in net80211, so let's just ignore this for now until this is sorted out.
* HT protection is just not implemented and won't be until the above is sorted out. In addition, the AR5416 has issues RTS protecting large aggregates (anything >8k), so the work around needs to be ported and tested. Thus, this will be put on hold until the above work is complete.
* The rate control module 'sample' is the only currently supported module; onoe/amrr haven't been tested and have likely bit rotted a little. I'll follow up with some commits to make them work again for non-11n rates, but they won't be updated to handle 11n and aggregation. If someone wishes to do so then they're welcome to send along patches.
* .. and "sample" doesn't really do a good job of 11n TX. Specifically, the metrics used (packet TX time and failure/success rates) isn't as useful for 11n. It's likely that it should be extended to take into account the aggregate throughput possible and then choose a rate which maximises that. Ie, it may be acceptable for a higher MCS rate with a higher failure to be used if it gives a more acceptable throughput/latency then a lower MCS rate @ a lower error rate. Again, patches will be gratefully accepted.
Because of this, ATH_ENABLE_11N is still not enabled by default.
Sponsored by: Hobnob, Inc. Obtained from: Linux, Atheros
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218160 |
01-Feb-2011 |
adrian |
Add a new method to the rate control modules which extract out the three other rates and try counts.
The 11n rate scenario path wants to take a list of rate and tries, rather than calling setupxtxdesc().
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186804 |
06-Jan-2009 |
sam |
remove module glue, it's not used any more
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185522 |
01-Dec-2008 |
sam |
Switch to ath hal source code. Note this removes the ath_hal module; the ath module now brings in the hal support. Kernel config files are almost backwards compatible; supplying
device ath_hal
gives you the same chip support that the binary hal did but you must also include
options AH_SUPPORT_AR5416
to enable the extended format descriptors used by 11n parts. It is now possible to control the chip support included in a build by specifying exactly which chips are to be supported in the config file; consult ath_hal(4) for information.
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184347 |
27-Oct-2008 |
sam |
remove driver-private equivalent of ni_txparms; it's now superfluous
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184346 |
27-Oct-2008 |
sam |
now that the new association callback is used when joining a bss we can eliminate the ath_rate_newassoc callback and associated code
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178354 |
20-Apr-2008 |
sam |
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)
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171613 |
27-Jul-2007 |
rwatson |
First in a series of changes to remove the now-unused Giant compatibility framework for non-MPSAFE network protocols:
- Remove debug_mpsafenet variable, sysctl, and tunable. - Remove NET_NEEDS_GIANT() and associate SYSINITSs used by it to force debug.mpsafenet=0 if non-MPSAFE protocols are compiled into the kernel. - Remove logic to automatically flag interrupt handlers as non-MPSAFE if debug.mpsafenet is set for an INTR_TYPE_NET handler. - Remove logic to automatically flag netisr handlers as non-MPSAFE if debug.mpsafenet is set. - Remove references in a few subsystems, including NFS and Cronyx drivers, which keyed off debug_mpsafenet to determine various aspects of their own locking behavior. - Convert NET_LOCK_GIANT(), NET_UNLOCK_GIANT(), and NET_ASSERT_GIANT into no-op's, as their entire behavior was determined by the value in debug_mpsafenet. - Alias NET_CALLOUT_MPSAFE to CALLOUT_MPSAFE.
Many remaining references to NET_.*_GIANT() and NET_CALLOUT_MPSAFE are still present in subsystems, and will be removed in followup commits.
Reviewed by: bz, jhb Approved by: re (kensmith)
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170530 |
11-Jun-2007 |
sam |
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.
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170375 |
06-Jun-2007 |
sam |
update copyrights to 2007 and convert to be 2-clause bsd-only
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165185 |
13-Dec-2006 |
sam |
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
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155477 |
09-Feb-2006 |
sam |
move mgt frame tx rate responsibility from the rate control modules to the driver; this avoids redundant logic and will be necessary for future additions
MFC after: 2 weeks
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148887 |
09-Aug-2005 |
rwatson |
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
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148290 |
22-Jul-2005 |
sam |
diff reduction against p4: define IEEE80211_FIXED_RATE_NONE and use it instead of -1
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147256 |
10-Jun-2005 |
brooks |
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
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144546 |
02-Apr-2005 |
sam |
nuke unintentional use of HAL_BOOL type
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144347 |
30-Mar-2005 |
sam |
rev rate control api to pass the both the first+last tx descriptors to the rate control module for tx complete processing; this enables rate control algorithms to extract the packet length for xmits that require multiple descriptors
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144306 |
29-Mar-2005 |
sam |
simplify callback
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140753 |
24-Jan-2005 |
sam |
statically allocate the station/neighbor node table; the deferred allocation scheme introduced a race condition during device state transitions
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139530 |
31-Dec-2004 |
sam |
bump copyright for 2005
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138878 |
15-Dec-2004 |
peter |
Make this amd64-clean. sizeof is long on amd64, so things that do a printf of a sizeof, need to use %z to get the correct type on all our platforms. Also, convert integers<->pointers via uintptr_t.
(I think Sam's instructions were for me to commit this. If I misunderstood, then I apologize in advance.)
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138569 |
08-Dec-2004 |
sam |
Transmit rate control modules for the ath driver.
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