From 7c4cbb6ee0a55885d697a5b07b6c4c8fd10d573a Mon Sep 17 00:00:00 2001
From: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Date: Fri, 27 Feb 2009 16:21:20 -0800
Subject: [PATCH] iwl3945: synchronize timestamp with uCode
In IBSS, TSF maintains local clock counters at each station. Network
Synchronization follows a completely distributed scheme where beacon frames
are generated. Each station maintain its own TSF timestamp, extracted from
beacon timestamps they recieved. Following patch synchronize this beacon timestamp
with uCode.
Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/iwlwifi/iwl3945-base.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index d0596e7f64e61..4dbaf04c5f512 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -4305,6 +4305,7 @@ static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *sk
{
struct iwl_priv *priv = hw->priv;
unsigned long flags;
+ __le64 timestamp;
IWL_DEBUG_MAC80211(priv, "enter\n");
@@ -4326,6 +4327,8 @@ static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *sk
priv->ibss_beacon = skb;
priv->assoc_id = 0;
+ timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
+ priv->timestamp = le64_to_cpu(timestamp);
IWL_DEBUG_MAC80211(priv, "leave\n");
spin_unlock_irqrestore(&priv->lock, flags);
--
2.30.2