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linux-next/net/mac80211/Kconfig
Javier Cardona dbf498fbaf mac80211: Implement mesh synchronization framework 
This patch adds MBSS extensible synchronization framework (Sec.
13.13.2 of IEEE Std. 802.11-2012).

The framework is implemented via an ops table which defines the
following functions:

    rx_bcn_presp() - this is called every time a mesh beacon is
received.
    adjust_tbtt() - this is called immediately before a beacon is about
to be transmitted.

The default neighbor offset synchronization defined in the standard is
implemented.  We also provide template functions for vendor specific
methods.

When neighbor offset synchronization is active (which is the default)
mesh neighbors in the same MBSS will track timing offsets to each other
and compensate clock drift.

In our tests we observed that this mesh synchronization implementation
successfully corrected drifts between stations of ~2PPM while
introducing a jitter of ~20us.

It is also possible to test this framework on mac80211_hwsim simulated
phys to see how it behaves under different topologies, over poor links,
etc.

Signed-off-by: Marco Porsch <marco.porsch@s2005.tu-chemnitz.de>
Signed-off-by: Pavel Zubarev <pavel.zubarev@gmail.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-04-10 15:20:31 -04:00

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config MAC80211
tristate "Generic IEEE 802.11 Networking Stack (mac80211)"
depends on CFG80211
select CRYPTO
select CRYPTO_ARC4
select CRYPTO_AES
select CRC32
select AVERAGE
---help---
This option enables the hardware independent IEEE 802.11
networking stack.
comment "CFG80211 needs to be enabled for MAC80211"
depends on CFG80211=n
if MAC80211 != n
config MAC80211_HAS_RC
bool
config MAC80211_RC_PID
bool "PID controller based rate control algorithm" if EXPERT
select MAC80211_HAS_RC
---help---
This option enables a TX rate control algorithm for
mac80211 that uses a PID controller to select the TX
rate.
config MAC80211_RC_MINSTREL
bool "Minstrel" if EXPERT
select MAC80211_HAS_RC
default y
---help---
This option enables the 'minstrel' TX rate control algorithm
config MAC80211_RC_MINSTREL_HT
bool "Minstrel 802.11n support" if EXPERT
depends on MAC80211_RC_MINSTREL
default y
---help---
This option enables the 'minstrel_ht' TX rate control algorithm
choice
prompt "Default rate control algorithm"
depends on MAC80211_HAS_RC
default MAC80211_RC_DEFAULT_MINSTREL
---help---
This option selects the default rate control algorithm
mac80211 will use. Note that this default can still be
overridden through the ieee80211_default_rc_algo module
parameter if different algorithms are available.
config MAC80211_RC_DEFAULT_PID
bool "PID controller based rate control algorithm"
depends on MAC80211_RC_PID
---help---
Select the PID controller based rate control as the
default rate control algorithm. You should choose
this unless you know what you are doing.
config MAC80211_RC_DEFAULT_MINSTREL
bool "Minstrel"
depends on MAC80211_RC_MINSTREL
---help---
Select Minstrel as the default rate control algorithm.
endchoice
config MAC80211_RC_DEFAULT
string
default "minstrel_ht" if MAC80211_RC_DEFAULT_MINSTREL && MAC80211_RC_MINSTREL_HT
default "minstrel" if MAC80211_RC_DEFAULT_MINSTREL
default "pid" if MAC80211_RC_DEFAULT_PID
default ""
endif
comment "Some wireless drivers require a rate control algorithm"
depends on MAC80211 && MAC80211_HAS_RC=n
config MAC80211_MESH
bool "Enable mac80211 mesh networking (pre-802.11s) support"
depends on MAC80211 && EXPERIMENTAL
---help---
This options enables support of Draft 802.11s mesh networking.
The implementation is based on Draft 2.08 of the Mesh Networking
amendment. However, no compliance with that draft is claimed or even
possible, as drafts leave a number of identifiers to be defined after
ratification. For more information visit http://o11s.org/.
config MAC80211_LEDS
bool "Enable LED triggers"
depends on MAC80211
depends on LEDS_CLASS
select LEDS_TRIGGERS
---help---
This option enables a few LED triggers for different
packet receive/transmit events.
config MAC80211_DEBUGFS
bool "Export mac80211 internals in DebugFS"
depends on MAC80211 && DEBUG_FS
---help---
Select this to see extensive information about
the internal state of mac80211 in debugfs.
Say N unless you know you need this.
menuconfig MAC80211_DEBUG_MENU
bool "Select mac80211 debugging features"
depends on MAC80211
---help---
This option collects various mac80211 debug settings.
config MAC80211_NOINLINE
bool "Do not inline TX/RX handlers"
depends on MAC80211_DEBUG_MENU
---help---
This option affects code generation in mac80211, when
selected some functions are marked "noinline" to allow
easier debugging of problems in the transmit and receive
paths.
This option increases code size a bit and inserts a lot
of function calls in the code, but is otherwise safe to
enable.
If unsure, say N unless you expect to be finding problems
in mac80211.
config MAC80211_VERBOSE_DEBUG
bool "Verbose debugging output"
depends on MAC80211_DEBUG_MENU
---help---
Selecting this option causes mac80211 to print out
many debugging messages. It should not be selected
on production systems as some of the messages are
remotely triggerable.
Do not select this option.
config MAC80211_HT_DEBUG
bool "Verbose HT debugging"
depends on MAC80211_DEBUG_MENU
---help---
This option enables 802.11n High Throughput features
debug tracing output.
It should not be selected on production systems as some
of the messages are remotely triggerable.
Do not select this option.
config MAC80211_TKIP_DEBUG
bool "Verbose TKIP debugging"
depends on MAC80211_DEBUG_MENU
---help---
Selecting this option causes mac80211 to print out
very verbose TKIP debugging messages. It should not
be selected on production systems as those messages
are remotely triggerable.
Do not select this option.
config MAC80211_IBSS_DEBUG
bool "Verbose IBSS debugging"
depends on MAC80211_DEBUG_MENU
---help---
Selecting this option causes mac80211 to print out
very verbose IBSS debugging messages. It should not
be selected on production systems as those messages
are remotely triggerable.
Do not select this option.
config MAC80211_VERBOSE_PS_DEBUG
bool "Verbose powersave mode debugging"
depends on MAC80211_DEBUG_MENU
---help---
Selecting this option causes mac80211 to print out very
verbose power save mode debugging messages (when mac80211
is an AP and has power saving stations.)
It should not be selected on production systems as those
messages are remotely triggerable.
Do not select this option.
config MAC80211_VERBOSE_MPL_DEBUG
bool "Verbose mesh peer link debugging"
depends on MAC80211_DEBUG_MENU
depends on MAC80211_MESH
---help---
Selecting this option causes mac80211 to print out very
verbose mesh peer link debugging messages (when mac80211
is taking part in a mesh network).
It should not be selected on production systems as those
messages are remotely triggerable.
Do not select this option.
config MAC80211_VERBOSE_MPATH_DEBUG
bool "Verbose mesh path debugging"
depends on MAC80211_DEBUG_MENU
depends on MAC80211_MESH
---help---
Selecting this option causes mac80211 to print out very
verbose mesh path selection debugging messages (when mac80211
is taking part in a mesh network).
It should not be selected on production systems as those
messages are remotely triggerable.
Do not select this option.
config MAC80211_VERBOSE_MHWMP_DEBUG
bool "Verbose mesh HWMP routing debugging"
depends on MAC80211_DEBUG_MENU
depends on MAC80211_MESH
---help---
Selecting this option causes mac80211 to print out very
verbose mesh routing (HWMP) debugging messages (when mac80211
is taking part in a mesh network).
It should not be selected on production systems as those
messages are remotely triggerable.
Do not select this option.
config MAC80211_VERBOSE_MESH_SYNC_DEBUG
bool "Verbose mesh mesh synchronization debugging"
depends on MAC80211_DEBUG_MENU
depends on MAC80211_MESH
---help---
Selecting this option causes mac80211 to print out very verbose mesh
synchronization debugging messages (when mac80211 is taking part in a
mesh network).
Do not select this option.
config MAC80211_VERBOSE_TDLS_DEBUG
bool "Verbose TDLS debugging"
depends on MAC80211_DEBUG_MENU
---help---
Selecting this option causes mac80211 to print out very
verbose TDLS selection debugging messages (when mac80211
is a TDLS STA).
It should not be selected on production systems as those
messages are remotely triggerable.
Do not select this option.
config MAC80211_DEBUG_COUNTERS
bool "Extra statistics for TX/RX debugging"
depends on MAC80211_DEBUG_MENU
depends on MAC80211_DEBUGFS
---help---
Selecting this option causes mac80211 to keep additional
and very verbose statistics about TX and RX handler use
and show them in debugfs.
If unsure, say N.
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