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From: Thomas Pedersen <twp@qca.qualcomm.com>
To: ath10k <ath10k@lists.infradead.org>
Cc: linux-wireless <linux-wireless@vger.kernel.org>,
	Thomas Pedersen <twp@qca.qualcomm.com>
Subject: [PATCH 4/4] mac80211: mesh: decrease max drift
Date: Wed, 28 Sep 2016 16:56:31 -0700	[thread overview]
Message-ID: <20160928235631.9197-5-twp@qca.qualcomm.com> (raw)
In-Reply-To: <20160928235631.9197-1-twp@qca.qualcomm.com>

The old value was 30ms, which means mesh sync will treat
any value below as merely TSF drift. This isn't really
reasonable (typical drift is < 10us/s) since people
probably want to adjust TSF in smaller increments (for ie.
beacon collision avoidance) without mesh sync fighting
back.

Change max drift adjustment to 0.8ms, so manual TSF
adjustments can be made in 1ms increments, with some
margin.

Signed-off-by: Thomas Pedersen <twp@qca.qualcomm.com>
---
 net/mac80211/mesh_sync.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mac80211/mesh_sync.c b/net/mac80211/mesh_sync.c
index 22ca43c..faca22c 100644
--- a/net/mac80211/mesh_sync.c
+++ b/net/mac80211/mesh_sync.c
@@ -28,7 +28,7 @@
  * could be, for instance, in case a neighbor is restarted and its TSF counter
  * reset.
  */
-#define TOFFSET_MAXIMUM_ADJUSTMENT 30000		/* 30 ms */
+#define TOFFSET_MAXIMUM_ADJUSTMENT 800		/* 0.8 ms */
 
 struct sync_method {
 	u8 method;
-- 
2.10.0.297.gf6727b0

WARNING: multiple messages have this Message-ID (diff)
From: Thomas Pedersen <twp@qca.qualcomm.com>
To: ath10k <ath10k@lists.infradead.org>
Cc: Thomas Pedersen <twp@qca.qualcomm.com>,
	linux-wireless <linux-wireless@vger.kernel.org>
Subject: [PATCH 4/4] mac80211: mesh: decrease max drift
Date: Wed, 28 Sep 2016 16:56:31 -0700	[thread overview]
Message-ID: <20160928235631.9197-5-twp@qca.qualcomm.com> (raw)
In-Reply-To: <20160928235631.9197-1-twp@qca.qualcomm.com>

The old value was 30ms, which means mesh sync will treat
any value below as merely TSF drift. This isn't really
reasonable (typical drift is < 10us/s) since people
probably want to adjust TSF in smaller increments (for ie.
beacon collision avoidance) without mesh sync fighting
back.

Change max drift adjustment to 0.8ms, so manual TSF
adjustments can be made in 1ms increments, with some
margin.

Signed-off-by: Thomas Pedersen <twp@qca.qualcomm.com>
---
 net/mac80211/mesh_sync.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mac80211/mesh_sync.c b/net/mac80211/mesh_sync.c
index 22ca43c..faca22c 100644
--- a/net/mac80211/mesh_sync.c
+++ b/net/mac80211/mesh_sync.c
@@ -28,7 +28,7 @@
  * could be, for instance, in case a neighbor is restarted and its TSF counter
  * reset.
  */
-#define TOFFSET_MAXIMUM_ADJUSTMENT 30000		/* 30 ms */
+#define TOFFSET_MAXIMUM_ADJUSTMENT 800		/* 0.8 ms */
 
 struct sync_method {
 	u8 method;
-- 
2.10.0.297.gf6727b0


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  parent reply	other threads:[~2016-09-28 23:58 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-28 23:56 [PATCH 0/4] ath10k: fix mesh sync operation Thomas Pedersen
2016-09-28 23:56 ` Thomas Pedersen
2016-09-28 23:56 ` [PATCH 1/4] mac80211: add offset_tsf driver op Thomas Pedersen
2016-09-28 23:56   ` Thomas Pedersen
2016-09-28 23:56 ` [PATCH 2/4] ath10k: implement offset_tsf ieee80211_op Thomas Pedersen
2016-09-28 23:56   ` Thomas Pedersen
2016-10-04 15:34   ` [2/4] " Kalle Valo
2016-10-04 15:34     ` Kalle Valo
2016-11-23 13:54   ` Kalle Valo
2016-11-23 13:54     ` Kalle Valo
2016-09-28 23:56 ` [PATCH 3/4] ath10k: remove set/get_tsf ieee80211_ops Thomas Pedersen
2016-09-28 23:56   ` Thomas Pedersen
2016-09-28 23:56 ` Thomas Pedersen [this message]
2016-09-28 23:56   ` [PATCH 4/4] mac80211: mesh: decrease max drift Thomas Pedersen
2016-09-30 11:47 ` [PATCH 0/4] ath10k: fix mesh sync operation Johannes Berg
2016-09-30 11:47   ` Johannes Berg

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