Return-path: Received: from mga11.intel.com ([192.55.52.93]:13154 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752490AbZB1AQs (ORCPT ); Fri, 27 Feb 2009 19:16:48 -0500 From: Reinette Chatre To: linville@tuxdriver.com Cc: linux-wireless@vger.kernel.org, ipw3945-devel@lists.sourceforge.net, Abhijeet Kolekar , Reinette Chatre Subject: [PATCH 2/6] iwl3945: synchronize timestamp with uCode Date: Fri, 27 Feb 2009 16:21:20 -0800 Message-Id: <1235780484-27979-3-git-send-email-reinette.chatre@intel.com> (sfid-20090228_011652_275961_5F9A6892) In-Reply-To: <1235780484-27979-2-git-send-email-reinette.chatre@intel.com> References: <1235780484-27979-1-git-send-email-reinette.chatre@intel.com> <1235780484-27979-2-git-send-email-reinette.chatre@intel.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Abhijeet Kolekar 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 Signed-off-by: Reinette Chatre --- drivers/net/wireless/iwlwifi/iwl3945-base.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c index 6dcc577..443c00e 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); -- 1.5.6.3