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Johannes Berg ea73cbce4e nl80211: fix scheduled scan RSSI matchset attribute confusion 
The scheduled scan matchsets were intended to be a list of filters,
with the found BSS having to pass at least one of them to be passed
to the host. When the RSSI attribute was added, however, this was
broken and currently wpa_supplicant adds that attribute in its own
matchset; however, it doesn't intend that to mean that anything
that passes the RSSI filter should be passed to the host, instead
it wants it to mean that everything needs to also have higher RSSI.

This is semantically problematic because we have a list of filters
like [ SSID1, SSID2, SSID3, RSSI ] with no real indication which
one should be OR'ed and which one AND'ed.

To fix this, move the RSSI filter attribute into each matchset. As
we need to stay backward compatible, treat a matchset with only the
RSSI attribute as a "default RSSI filter" for all other matchsets,
but only if there are other matchsets (an RSSI-only matchset by
itself is still desirable.)

To make driver implementation easier, keep a global min_rssi_thold
for the entire request as well. The only affected driver is ath6kl.

I found this when I looked into the code after Raja Mani submitted
a patch fixing the n_match_sets calculation to disregard the RSSI,
but that patch didn't address the semantic issue.

Reported-by: Raja Mani <rmani@qti.qualcomm.com>
Acked-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
 		2014-02-04 21:58:12 +01:00
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accessibility
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acpi ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
amba
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ata ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
atm
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auxdisplay
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base regmap: Updates for v3.14 2014-01-25 13:18:00 -08:00
bcma Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2014-01-10 10:59:40 -05:00
block drivers/block/Kconfig: update RAM block device module name 2014-01-23 16:36:53 -08:00
bluetooth Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next 2014-01-08 13:44:29 -05:00
bus
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cdrom
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char Merge branch 'ipmi' (ipmi patches from Corey Minyard) 2014-01-25 15:33:41 -08:00
clk The first half of the clk framework pull request is made up almost 2014-01-23 18:56:08 -08:00
clocksource ARM: SoC DT updates for 3.14 2014-01-23 18:45:38 -08:00
connector
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cpufreq Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2014-01-24 17:13:49 -08:00
cpuidle
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crypto ARM: driver updates for 3.14 2014-01-23 18:49:36 -08:00
dca
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devfreq ARM: SoC cleanups for 3.14 2014-01-23 18:36:55 -08:00
dio
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dma ARM: SoC DT updates for 3.14 2014-01-23 18:45:38 -08:00
edac Merge branch 'x86-ras-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-01-20 12:10:27 -08:00
eisa Revert "EISA: Initialize device before its resources" 2014-01-17 14:57:29 -07:00
extcon extcon: gpio: Add power resume support 2014-01-09 09:53:30 +09:00
firewire
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firmware ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
fmc
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gpio ARM: driver updates for 3.14 2014-01-23 18:49:36 -08:00
gpu ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
hid ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
hsi
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hv ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
hwmon Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2014-01-24 17:13:49 -08:00
hwspinlock
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i2c ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
ide ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
idle ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
iio Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-01-22 21:21:55 -08:00
infiniband Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-01-25 11:17:34 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2014-01-24 17:17:30 -08:00
iommu ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
ipack
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irqchip Xtensa patchset for 3.14-rc1 2014-01-25 10:49:30 -08:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-01-25 11:17:34 -08:00
leds Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-01-22 21:21:55 -08:00
lguest
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macintosh Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k 2014-01-20 09:24:31 -08:00
mailbox drivers/mailbox/omap: make mbox->irq signed for error handling 2014-01-23 16:36:53 -08:00
md md updates for 3.14 2014-01-24 17:41:50 -08:00
media Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-01-25 11:17:34 -08:00
memory
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memstick drivers/memstick/host/rtsx_pci_ms.c: fix ms card data transfer bug 2014-01-23 16:37:04 -08:00
message MPT / PCI: Use pci_stop_and_remove_bus_device_locked() 2014-01-14 12:14:25 -07:00
mfd regulator: Updates for v3.14 2014-01-25 13:19:10 -08:00
misc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-01-22 21:21:55 -08:00
mmc MMC highlights for 3.14: 2014-01-26 11:00:41 -08:00
mtd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-01-22 21:21:55 -08:00
net nl80211: fix scheduled scan RSSI matchset attribute confusion 2014-02-04 21:58:12 +01:00
nfc NFC: nfcmrvl: Fix possible memory leak issue 2014-01-09 01:27:20 +01:00
ntb
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nubus
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of Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-01-25 11:17:34 -08:00
oprofile
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parisc
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parport TTY/Serial driver patches for 3.14-rc1 2014-01-20 16:05:23 -08:00
pci ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
pcmcia PCI changes for the v3.14 merge window: 2014-01-22 16:39:28 -08:00
phy Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-01-25 11:17:34 -08:00
pinctrl ARM: SoC DT updates for 3.14 2014-01-23 18:45:38 -08:00
platform ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
pnp Merge branch 'pnp' 2014-01-12 23:48:18 +01:00
power Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-01-25 11:17:34 -08:00
powercap
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pps
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ps3
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ptp ptp_pch: Add dependency on HAS_IOMEM 2014-01-15 14:51:22 -08:00
pwm pwm: Add LP3943 PWM driver 2014-01-21 08:28:00 +00:00
rapidio
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regulator regulator: Updates for v3.14 2014-01-25 13:19:10 -08:00
remoteproc
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reset
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rpmsg
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rtc Merge branch 'akpm' (incoming from Andrew) 2014-01-23 19:11:50 -08:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-01-25 11:17:34 -08:00
sbus
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scsi Main batch of InfiniBand/RDMA changes for 3.14: 2014-01-24 17:18:32 -08:00
sfi
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sh
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sn
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spi spi: Updates for v3.14 2014-01-25 13:20:36 -08:00
ssb ssb: fix sparse warnings in driver_chipcommon_sflash.c 2014-01-03 15:37:01 -05:00
staging Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-01-25 11:17:34 -08:00
target
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tc
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thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2014-01-24 17:13:49 -08:00
tty ARM: driver updates for 3.14 2014-01-23 18:49:36 -08:00
uio
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usb ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
uwb
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vfio - Convert to misc driver to support module auto loading 2014-01-24 17:42:31 -08:00
vhost
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video fbdev changes for 3.14 2014-01-24 17:16:31 -08:00
virt
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virtio A few simple fixes. Quiet cycle. 2014-01-22 22:24:35 -08:00
vlynq drivers/vlynq/vlynq.c: fix another resource size off by 1 error 2014-01-23 16:36:55 -08:00
vme
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w1 drivers/w1/masters/w1-gpio.c: add strong pullup emulation 2014-01-23 16:37:04 -08:00
watchdog ARM: driver updates for 3.14 2014-01-23 18:49:36 -08:00
xen ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
zorro
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Kconfig
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Makefile
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