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authorJavier Cardona <javier@cozybit.com>2012-03-31 11:31:32 -0700
committerJohn W. Linville <linville@tuxdriver.com>2012-04-10 15:20:31 -0400
commitdbf498fbafa2c23139d5a990e94ed78bafbbea19 (patch)
tree723a2ed4575ab2178cbd210d85a19d5c968a95a1 /net/mac80211/Kconfig
parent9bdd3a6bf8513a0a9eda031d15b36e4677854243 (diff)
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>
Diffstat (limited to 'net/mac80211/Kconfig')
-rw-r--r--net/mac80211/Kconfig11
1 files changed, 11 insertions, 0 deletions
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 96ddb72760b..8d249d70598 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -225,6 +225,17 @@ config MAC80211_VERBOSE_MHWMP_DEBUG
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