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  1. 20 8月, 2009 1 次提交
    • J
      mac80211: allow configure_filter callback to sleep · 3ac64bee
      由 Johannes Berg 提交于 
      Over time, a whole bunch of drivers have come up
with their own scheme to delay the configure_filter
operation to a workqueue. To be able to simplify
things, allow configure_filter to sleep, and add
a new prepare_multicast callback that drivers that
need the multicast address list implement. This new
callback must be atomic, but most drivers either
don't care or just calculate a hash which can be
done atomically and then uploaded to the hardware
non-atomically.

A cursory look suggests that at76c50x-usb, ar9170,
mwl8k (which is actually very broken now), rt2x00,
wl1251, wl1271 and zd1211 should make use of this
new capability.
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      3ac64bee
  3. 14 8月, 2009 1 次提交
  5. 05 8月, 2009 1 次提交
    • L
      mac80211: redefine usage of the mac80211 workqueue · 42935eca
      由 Luis R. Rodriguez 提交于 
      The mac80211 workqueue exists to enable mac80211 and drivers
to queue their own work on a single threaded workqueue. mac80211
takes care to flush the workqueue during suspend but we never
really had requirements on drivers for how they should use
the workqueue in consideration for suspend.

We extend mac80211 to document how the mac80211 workqueue should
be used, how it should not be used and finally move raw access to
the workqueue to mac80211 only. Drivers and mac80211 use helpers
to queue work onto the mac80211 workqueue:

  * ieee80211_queue_work()
  * ieee80211_queue_delayed_work()

These helpers will now warn if mac80211 already completed its
suspend cycle and someone is trying to queue work. mac80211
flushes the mac80211 workqueue prior to suspend a few times,
but we haven't taken the care to ensure drivers won't add more
work after suspend. To help with this we add a warning when
someone tries to add work and mac80211 already completed the
suspend cycle.

Drivers should ensure they cancel any work or delayed work
in the mac80211 stop() callback.
Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      42935eca
  7. 04 8月, 2009 1 次提交
  9. 11 7月, 2009 1 次提交
    • J
      mac80211: push rx status into skb->cb · f1d58c25
      由 Johannes Berg 提交于 
      Within mac80211, we often need to copy the rx status into
skb->cb. This is wasteful, as drivers could be building it
in there to start with. This patch changes the API so that
drivers are expected to pass the RX status in skb->cb, now
accessible as IEEE80211_SKB_RXCB(skb). It also updates all
drivers to pass the rx status in there, but only by making
them memcpy() it into place before the call to the receive
function (ieee80211_rx(_irqsafe)). Each driver can now be
optimised on its own schedule.
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      f1d58c25
  11. 21 5月, 2009 1 次提交
  13. 07 5月, 2009 1 次提交
  15. 17 3月, 2009 1 次提交
  17. 06 3月, 2009 1 次提交
  19. 28 2月, 2009 1 次提交
  21. 14 2月, 2009 2 次提交
  23. 10 2月, 2009 1 次提交
  25. 09 1月, 2009 1 次提交
  27. 05 12月, 2008 1 次提交
    • S
      zd1211rw: use unaligned safe memcmp() in-place of compare_ether_addr() · cde6901b
      由 Shaddy Baddah 提交于 
      Under my 2.6.28-rc6 sparc64, when associating to an AP through my
zd1211rw device, I was seeing kernel log messages like (not exact output):

  Kernel unaligned access at TPC[10129b68] zd_mac_rx+0x144/0x32c [zd1211rw]

For the zd1211rw module, on RX, the 80211 packet will be located after
the PLCP header in the skb data buffer. The PLCP header being 5 bytes
long, the 80211 header will start unaligned from an aligned skb
buffer.

As per Documentation/unaligned-memory-access.txt, we must replace the
not unaligned() safe compare_ether_addr() with memcmp() to protect
architectures that require alignment.
Signed-off-by: NShaddy Baddah <shaddy_baddah@hotmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      cde6901b
  29. 01 11月, 2008 3 次提交
  31. 28 10月, 2008 1 次提交
  33. 23 9月, 2008 1 次提交
  35. 16 9月, 2008 2 次提交
  37. 06 9月, 2008 1 次提交
  39. 30 7月, 2008 1 次提交
  41. 15 7月, 2008 1 次提交
    • J
      mac80211: revamp beacon configuration · 9d139c81
      由 Johannes Berg 提交于 
      This patch changes mac80211's beacon configuration handling
to never pass skbs to the driver directly but rather always
require the driver to use ieee80211_beacon_get(). Additionally,
it introduces "change flags" on the config_interface() call
to enable drivers to figure out what is changing. Finally, it
removes the beacon_update() driver callback in favour of
having IBSS beacon delivered by ieee80211_beacon_get() as well.
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      9d139c81
  43. 10 7月, 2008 1 次提交
  45. 09 7月, 2008 1 次提交
  47. 27 6月, 2008 1 次提交
  49. 10 6月, 2008 1 次提交
  51. 22 5月, 2008 4 次提交
  53. 15 5月, 2008 2 次提交
    • B
      mac80211: use hardware flags for signal/noise units · 566bfe5a
      由 Bruno Randolf 提交于 
      trying to clean up the signal/noise code. the previous code in mac80211 had
confusing names for the related variables, did not have much definition of
what units of signal and noise were provided and used implicit mechanisms from
the wireless extensions.

this patch introduces hardware capability flags to let the hardware specify
clearly if it can provide signal and noise level values and which units it can
provide. this also anticipates possible new units like RCPI in the future.

for signal:

  IEEE80211_HW_SIGNAL_UNSPEC - unspecified, unknown, hw specific
  IEEE80211_HW_SIGNAL_DB     - dB difference to unspecified reference point
  IEEE80211_HW_SIGNAL_DBM    - dBm, difference to 1mW

for noise we currently only have dBm:

  IEEE80211_HW_NOISE_DBM     - dBm, difference to 1mW

if IEEE80211_HW_SIGNAL_UNSPEC or IEEE80211_HW_SIGNAL_DB is used the driver has
to provide the maximum value (max_signal) it reports in order for applications
to make sense of the signal values.

i tried my best to find out for each driver what it can provide and update it
but i'm not sure (?) for some of them and used the more conservative guess in
doubt. this can be fixed easily after this patch has been merged by changing
the hardware flags of the driver.

DRIVER          SIGNAL    MAX	NOISE   QUAL
-----------------------------------------------------------------
adm8211         unspec(?) 100   n/a     missing
at76_usb        unspec(?) (?)   unused  missing
ath5k           dBm             dBm     percent rssi
b43legacy       dBm             dBm     percent jssi(?)
b43             dBm             dBm     percent jssi(?)
iwl-3945        dBm             dBm     percent snr+more
iwl-4965        dBm             dBm     percent snr+more
p54             unspec    127   n/a     missing
rt2x00          dBm	        n/a     percent rssi+tx/rx frame success
  rt2400        dBm             n/a
  rt2500pci     dBm             n/a
  rt2500usb     dBm             n/a
  rt61pci       dBm             n/a
  rt73usb       dBm             n/a
rtl8180         unspec(?) 65    n/a     (?)
rtl8187         unspec(?) 65    (?)     noise(?)
zd1211          dB(?)     100   n/a     percent

drivers/net/wireless/ath5k/base.c:      Changes-licensed-under: 3-Clause-BSD
Signed-off-by: NBruno Randolf <br1@einfach.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      566bfe5a
    • B
      zd1211rw: initial IBSS support · 84e6dc9a
      由 Bruno Randolf 提交于 
      this adds initial IBSS support for the zydas zd1211rw:
convince driver that it can do IBSS mode. add mac80211 beacon_update callback.

IBSS merge and TSF updates don't work yet, but it makes the driver usable in
ad-hoc networks.
Signed-off-by: NBruno Randolf <br1@einfach.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      84e6dc9a
  55. 07 3月, 2008 1 次提交
  57. 01 3月, 2008 2 次提交
    • M
      zd1211rw: Fix beacon filter flags thinko · 2c1a1b12
      由 Michael Buesch 提交于 
      We must not clear the FIF_BCN_PRBRESP_PROMISC bit in the
new_flags. The zd-driver does support sending beacons and
probe responses to the host. What the flag does is say "Send me
all beacons and probe responses". And we actually do that. We always
do that, so we ignore the case when the bit is disabled. But that is
fine. But we must not clear the flag, as that tells mac80211 that
we do not support passing beacons and probe responses to the stack.
And that's not true.
Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Acked-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      2c1a1b12
    • J
      cfg80211 API for channels/bitrates, mac80211 and driver conversion · 8318d78a
      由 Johannes Berg 提交于 
      This patch creates new cfg80211 wiphy API for channel and bitrate
registration and converts mac80211 and drivers to the new API. The
old mac80211 API is completely ripped out. All drivers (except ath5k)
are updated to the new API, in many cases I expect that optimisations
can be done.

Along with the regulatory code I've also ripped out the
IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED flag, I believe it to be
unnecessary if the hardware simply gives us whatever channels it wants
to support and we then enable/disable them as required, which is pretty
much required for travelling.

Additionally, the patch adds proper "basic" rate handling for STA
mode interface, AP mode interface will have to have new API added
to allow userspace to set the basic rate set, currently it'll be
empty... However, the basic rate handling will need to be moved to
the BSS conf stuff.

I do expect there to be bugs in this, especially wrt. transmit
power handling where I'm basically clueless about how it should work.
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      8318d78a
  59. 21 2月, 2008 1 次提交
  61. 29 1月, 2008 1 次提交
    • J
      mac80211: add unified BSS configuration · 471b3efd
      由 Johannes Berg 提交于 
      This patch (based on Ron Rindjunsky's) creates a framework for
a unified way to pass BSS configuration to drivers that require
the information, e.g. for implementing power save mode.

This patch introduces new ieee80211_bss_conf structure that is
passed to the driver via the new bss_info_changed() callback
when the BSS configuration changes.

This new BSS configuration infrastructure adds the following
new features:
 * drivers are notified of their association AID
 * drivers are notified of association status

and replaces the erp_ie_changed() callback. The patch also does
the relevant driver updates for the latter change.
Signed-off-by: NRon Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      471b3efd