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Adrian Chadd 88b3d48316 Implement BAR TX. 
A BAR frame must be transmitted when an frame in an A-MPDU session fails
to transmit - it's retried too often, or it can't be cloned for
re-transmission.  The BAR frame tells the remote side to advance the
left edge of the block-ack window (BAW) to a new value.

In order to do this:

* TX for that particular node/TID must be paused;
* The existing frames in the hardware queue needs to be completed, whether
  they're TXed successfully or otherwise;
* The new left edge of the BAW is then communicated to the remote side
  via a BAR frame;
* Once the BAR frame has been sucessfully TXed, aggregation can resume;
* If the BAR frame can't be successfully TXed, the aggregation session
  is torn down.

This is a first pass that implements the above.  What needs to be done/
tested:

* What happens during say, a channel reset / stuck beacon _and_ BAR
  TX.  It _should_ be correctly buffered and retried once the
  reset has completed.  But if a bgscan occurs (and they shouldn't,
  grr) the BAR frame will be forcibly failed and the aggregation session
  will be torn down.

  Yes, another reason to disable bgscan until I've figured this out.

* There's way too much locking going on here.  I'm going to do a couple
  of further passes of sanitising and refactoring so the (re) locking
  isn't so heavy.  Right now I'm going for correctness, not speed.

* The BAR TX can fail if the hardware TX queue is full.  Since there's
  no "free" space kept for management frames, a full TX queue (from eg
  an iperf test) can race with your ability to allocate ath_buf/mbufs
  and cause issues.  I'll knock this on the head with a subsequent
  commit.

* I need to do some _much_ more thorough testing in hostap mode to ensure
  that many concurrent traffic streams to different end nodes are correctly
  handled.  I'll find and squish whichever bugs show up here.

But, this is an important step to being able to flip on 802.11n by default.
The last issue (besides bug fixes, of course) is HT frame protection and
I'll address that in a subsequent commit.
2012-04-04 23:45:15 +00:00
..
aac Use bus_get_dma_tag() to inherit the PCI bus' 4G boundary constraint. 2012-03-07 18:52:46 +00:00
acpi_support Add missing MODULE_DEPEND() so that acpi.ko and aibs.ko can be 2012-02-28 15:12:26 +00:00
acpica Use a more proper fix for enabling HT MSI mapping windows on Host-PCI 2012-03-29 19:03:22 +00:00
adb Add support for special keys (volume/brightness/eject) on Apple laptops with 2011-10-16 21:01:42 +00:00
adlink
advansys Final pass at having devices use their bus parent for dma tags. The 2012-03-12 19:29:35 +00:00
ae To send a frame, controller requires a prepended TX header and 2011-11-11 19:15:32 +00:00
age Close a race where SIOCGIFMEDIA ioctl get inconsistent link status. 2011-10-17 19:49:00 +00:00
agp
aha
ahb Remove a stale comment. 2012-03-12 20:31:58 +00:00
ahci Fix names of some Marvell SATA chips. It looks like chips with proprietary 2012-03-02 08:49:07 +00:00
aic
aic7xxx Follow non-BSD case when GNU/Hurd is detected. 2012-03-25 21:54:36 +00:00
alc Close a race where SIOCGIFMEDIA ioctl get inconsistent link status. 2011-10-17 19:49:00 +00:00
ale - Const'ify the device lookup-table. 2012-04-04 21:09:02 +00:00
amdsbwd amdsbwd: update to support SB8xx southbridges 2011-06-07 06:18:02 +00:00
amdtemp - Add support for Family 12h, 14h and 15h processors. 2012-02-24 00:02:46 +00:00
amr Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
an Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
arcmsr Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
asmc
asr Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
ata - First pass at const'ifying ata(4) as appropriate. 2012-03-21 16:59:39 +00:00
ath Implement BAR TX. 2012-04-04 23:45:15 +00:00
atkbdc Add a PNP ID for Japanese 106-key keyboard. 2012-03-28 17:58:37 +00:00
auxio
bce Rework link state tracking and remove superfluous link UP/DOWN 2011-12-13 18:11:25 +00:00
bfe ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
bge Make if_ierrors updated whenever any of the following counters are 2012-03-12 03:47:30 +00:00
bktr Remove a few bits of FreeBSD 2.x compatibility code. 2011-11-14 18:21:27 +00:00
bm ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
buslogic Remove comments about creating DMA tags as children of the DMA tags of their 2012-03-12 19:29:32 +00:00
bwi Fix some net80211 enum nits: 2011-12-17 10:23:17 +00:00
bwn Fix some net80211 enum nits: 2011-12-17 10:23:17 +00:00
bxe Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
cardbus - Add a bus_dma tag to each PCI bus that is a child of a Host-PCI bridge. 2012-03-02 20:38:04 +00:00
cas - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
ce Fix clang warnings in sys/dev/ce/if_ce.c and sys/dev/cp/if_cp.c, 2011-12-29 17:46:24 +00:00
cesa Final pass at having devices use their bus parent for dma tags. The 2012-03-12 19:29:35 +00:00
cfe kern cons: introduce infrastructure for console grabbing by kernel 2011-12-17 15:08:43 +00:00
cfi CFI fixes for big endian archs. 2012-03-27 15:13:12 +00:00
ciss Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
cm Replace inline static' by static inline'. 2011-12-13 14:06:01 +00:00
cmx
coretemp #PROCHOT assertion is sticky after reading the MSR (accordingly with 2011-09-19 10:58:30 +00:00
cp Fix clang warnings in sys/dev/ce/if_ce.c and sys/dev/cp/if_cp.c, 2011-12-29 17:46:24 +00:00
cpuctl Add VIA microde update support to cpuctl(4) and cpucontrol(8). 2011-12-12 12:30:44 +00:00
cpufreq
cs Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
ct
ctau
cx
cxgb Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
cxgbe Use the non-sleeping variang of t4_wr_mbox in code that can be called 2012-02-13 18:41:32 +00:00
cy
dc Use DEVMETHOD_END. 2011-11-23 20:27:26 +00:00
dcons kern cons: introduce infrastructure for console grabbing by kernel 2011-12-17 15:08:43 +00:00
de More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
digi
dpms
dpt Remove comments about creating DMA tags as children of the DMA tags of their 2012-03-12 19:29:32 +00:00
drm In sys/dev/drm/radeon_state.c, use the correct printf length modifiers 2011-12-30 02:07:50 +00:00
e1000 Fix a few issues with transmit handling in em(4) and igb(4): 2012-03-30 19:54:48 +00:00
ed Fix off by one error in mbuf access. Previously it caused panic. 2011-12-05 18:10:43 +00:00
eisa - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
en Final pass at having devices use their bus parent for dma tags. The 2012-03-12 19:29:35 +00:00
ep ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
esp s/timout/timeout 2011-12-15 06:29:13 +00:00
et style. No functional changes. 2012-01-10 20:52:02 +00:00
ex Convert files to UTF-8 2012-01-15 13:23:18 +00:00
exca
fatm
fb Save and restore VGA display memory between suspend and resume. 2012-04-04 22:02:54 +00:00
fdc Replace inline static' by static inline'. 2011-12-13 14:06:01 +00:00
fdt Respect phy-handle property in Ethernet nodes of the device tree. 2012-03-04 19:22:52 +00:00
fe Improve media status reporting, when the driver knows... 2012-01-30 22:47:02 +00:00
firewire Update sbp_targ such that it can actually handle multiple CTIO's during operation 2012-01-25 23:33:50 +00:00
flash Add a couple more SPI flash device IDs found in commercial 2012-01-04 04:17:03 +00:00
fxp Remove unnecessary #if as the software workaround for PCI protocol 2012-03-28 01:52:38 +00:00
gem - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
glxiic Fix breakage on pc98 by redefining DEBUG(). 2011-05-15 19:04:08 +00:00
glxsb More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
gpio Remove extra semicolon which rendered condition useless 2012-04-02 00:11:26 +00:00
hatm More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
hifn Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
hme - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
hpt27xx Remove spurious 8bit chars, turning files into plain ASCII. 2012-01-15 13:23:33 +00:00
hptiop Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
hptmv Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
hptrr - Just use cam_calc_geometry(9) on newer version of FreeBSD rather than 2011-11-23 21:43:51 +00:00
hwpmc Add software PMC support. 2012-03-28 20:58:30 +00:00
ic
ichsmb - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
ichwd Remove use of explicit bus space tags and handles and use methods that 2012-01-05 16:27:32 +00:00
ida Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
ie Isolate v_caddr_t in the ie driver. 2012-01-31 13:00:40 +00:00
ieee488 Convert files to UTF-8 2012-01-15 13:23:43 +00:00
if_ndis Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
iicbus Driver for OpenCores I2C controller. 2012-03-27 10:44:32 +00:00
iir Remove comments about creating DMA tags as children of the DMA tags of their 2012-03-12 19:29:32 +00:00
io
ipmi Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
ips Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
ipw Use suspend/resume methods provided by net80211. This ensures that the 2012-03-23 19:32:30 +00:00
isci Fix the following compilation warning with clang trunk in isci(4): 2012-03-30 22:52:08 +00:00
iscsi/initiator Remove direct access to si_name. 2012-02-10 12:35:57 +00:00
isp Fix memset sizeof 2012-02-22 01:08:59 +00:00
ispfw
iwi Use suspend/resume methods provided by net80211. This ensures that the 2012-03-23 19:32:30 +00:00
iwn strip (R) to match manpage and pci_vendors 2012-03-27 18:27:45 +00:00
ixgb More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
ixgbe More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
jme - Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP 2011-05-03 19:51:29 +00:00
joy
kbd Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
kbdmux Restore binary compatibility for GIO_KEYMAP and PIO_KEYMAP. 2011-07-17 08:19:19 +00:00
ksyms Get rid of D_PSEUDO. 2011-10-18 08:09:44 +00:00
le Make sparc64 compatible with NEW_PCIB and enable it: 2011-10-02 23:22:38 +00:00
led
lge ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
lindev
lmc More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
malo Fix some net80211 enum nits: 2011-12-17 10:23:17 +00:00
mc146818
mca - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
mcd
md Document a large number of currently undocumented sysctls. While here 2011-12-13 00:38:50 +00:00
mem
mfi - Do not include machine/atomic.h. It is no longer necessary since r233768. 2012-04-04 16:15:40 +00:00
mge More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
mii Prefer RL_GMEDIASTAT register to RGEPHY_MII_SSR register to 2012-02-28 05:23:29 +00:00
mk48txx Add support for MK48T37. 2011-05-15 13:17:08 +00:00
mlx Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
mly Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
mmc Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
mn
mps Make the mps(4) module depend on the cam module. 2012-03-07 22:39:11 +00:00
mpt Refine r233827; as it turns out, controllers with a device ID of 0x0059 2012-04-04 20:42:45 +00:00
mse
msk ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
mvs Adjust mvs(4) to handle interrupt cause reg depending on the actual number of 2012-02-01 13:39:52 +00:00
mwl Fix some net80211 enum nits: 2011-12-17 10:23:17 +00:00
mxge More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
my ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
ncv
netmap A bunch of netmap fixes: 2012-02-27 19:05:01 +00:00
nfe ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
nge - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
nmdm Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
nsp
null Fix for PR 138526. 2012-01-11 15:00:16 +00:00
nve More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
nvram
nvram2env
nxge Convert files to UTF-8 2012-01-15 13:23:43 +00:00
oce Use pci_find_cap() instead of pci_find_extcap() to locate PCI 2012-03-03 18:03:50 +00:00
ofw Make ofw_bus_get_node() consistently return -1 when there is no associated 2012-03-15 22:53:39 +00:00
patm More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
pbio
pccard Replace inline static' by static inline'. 2011-12-13 14:06:01 +00:00
pccbb Some laptops have weak power controllers that cannot tolerate multiple 2012-01-27 21:49:02 +00:00
pcf Make ofw_bus_get_node() consistently return -1 when there is no associated 2012-03-15 22:53:39 +00:00
pci Fix couple of style nits. 2012-03-29 19:29:24 +00:00
pcn Fix logic error 2012-02-27 08:57:02 +00:00
pdq
powermac_nvram
ppbus Rename device_delete_all_children() into device_delete_children(). 2011-11-22 21:56:55 +00:00
ppc Rename device_delete_all_children() into device_delete_children(). 2011-11-22 21:56:55 +00:00
pst Convert files to UTF-8 2012-01-15 13:23:18 +00:00
pty Fix whitespace inconsistencies in the TTY layer and its drivers owned by me. 2011-06-26 18:26:20 +00:00
puc - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
qlxgb ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
quicc - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
ral Fix some net80211 enum nits: 2011-12-17 10:23:17 +00:00
random Add support for the extended FPU states on amd64, both for native 2012-01-21 17:45:27 +00:00
rc
re Prefer RL_GMEDIASTAT register to RGEPHY_MII_SSR register to 2012-02-28 05:23:29 +00:00
rndtest Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
rp
rt ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
safe More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
sbni
scc - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
scd
sdhci Add support for RICOH R5CE823 card reader, that can be found in 2012-02-09 10:20:41 +00:00
sec - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
sf Remove duplicate assignment of SF_IMR_RXDQ2_DMADONE bit 2012-02-27 08:55:32 +00:00
sfxge Update recently added drivers to use the if_*addr_r*lock() wrapper 2012-01-05 18:32:37 +00:00
sge - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
si
siba Expand the set of APIs available for locating PCI capabilities: 2012-03-03 18:08:57 +00:00
siis Rename device_delete_all_children() into device_delete_children(). 2011-11-22 21:56:55 +00:00
sio kern cons: introduce infrastructure for console grabbing by kernel 2011-12-17 15:08:43 +00:00
sis ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
sk ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
smbus - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
smc - Import the common MII bitbang'ing code from NetBSD and convert drivers to 2011-11-01 16:13:59 +00:00
sn ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
snc ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
snp Second-to-last commit implementing Capsicum capabilities in the FreeBSD 2011-08-11 12:30:23 +00:00
sound Fix compiler warnings, mostly signed issues, 2012-04-02 10:50:42 +00:00
speaker Do not define bool/true/false if the symbols already exist. 2011-12-12 18:43:24 +00:00
spibus Replace inline static' by static inline'. 2011-12-13 14:06:01 +00:00
ste - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
stg
stge ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
streams Add the fo_chown and fo_chmod methods to struct fileops and use them 2011-08-16 20:07:47 +00:00
sym Merge from r225950: 2011-10-07 08:59:54 +00:00
syscons Move tty_opened_ns() into syscons.c which is currently the 2012-03-29 15:47:29 +00:00
tdfx Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
ti Eliminate vestiges of page coloring. 2011-12-15 05:07:16 +00:00
tl ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
tpm
trm More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
tsec Respect phy-handle property in Ethernet nodes of the device tree. 2012-03-04 19:22:52 +00:00
twa Use bus_get_dma_tag() to inherit the 4G boundary restriction from the 2012-03-07 18:53:56 +00:00
twe Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
tws Convert a number of drivers to obtaining their parent DMA tag from their 2012-03-12 08:03:51 +00:00
tx - Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP 2011-05-03 19:51:29 +00:00
txp
uart Add PCI Id for the AMT SOL UART on G4x series Intel chipsets. 2012-03-14 14:01:51 +00:00
ubsec More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
usb Fix compiler warnings, mostly signed issues, 2012-04-02 10:50:42 +00:00
utopia
vge Remove unused variable mii 2012-02-11 08:12:52 +00:00
viawd Correctly spell my email address. 2011-12-22 15:13:32 +00:00
virtio Use pci_find_cap() instead of pci_find_extcap() to locate PCI 2012-03-03 18:03:50 +00:00
vkbd Get rid of D_PSEUDO. 2011-10-18 08:09:44 +00:00
vr Announce flow control capability to PHY drivers and enable flow 2011-11-28 19:03:59 +00:00
vte Remove unused variable mii. 2011-11-23 05:34:01 +00:00
vx ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
vxge Remove spurious 8bit chars, turning files into plain ASCII. 2012-01-15 13:23:54 +00:00
watchdog - Add the possibility to reuse the already last used timeout when patting 2011-04-27 16:43:03 +00:00
wb ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again 2012-01-07 09:41:57 +00:00
wbwd Provide wbwd(4), a driver for the watchdog timer found on various 2012-03-06 18:44:52 +00:00
wds Final pass at having devices use their bus parent for dma tags. The 2012-03-12 19:29:35 +00:00
wi If an interrupt is received with no vap attached, just fail LINK events. 2012-02-25 08:01:29 +00:00
wl
wpi Use suspend/resume methods provided by net80211. This ensures that the 2012-03-23 19:32:30 +00:00
wtap Remove this - it's not needed as it's defined in ieee80211_freebsd.h. 2012-03-19 13:54:15 +00:00
xe Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
xen Correct failure to attach the PV block front device on Citrix 2012-03-25 14:20:43 +00:00
xl Use DEVMETHOD_END. 2011-11-23 20:27:26 +00:00