Return-path: Received: from mail-pz0-f52.google.com ([209.85.210.52]:49133 "EHLO mail-pz0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751687Ab2CAA3s (ORCPT ); Wed, 29 Feb 2012 19:29:48 -0500 Received: by dado14 with SMTP id o14so50664dad.11 for ; Wed, 29 Feb 2012 16:29:48 -0800 (PST) MIME-Version: 1.0 From: Javier Cardona To: "John W. Linville" Cc: Javier Cardona , devel@lists.open80211s.org, Johannes Berg , linux-wireless@vger.kernel.org Subject: [PATCH 1/2] mac80211_hwsim: Add tsf to beacons and radiotap header. Date: Wed, 29 Feb 2012 16:29:35 -0800 Message-Id: <1330561776-8135-1-git-send-email-javier@cozybit.com> (sfid-20120301_012952_517230_8E37477D) Sender: linux-wireless-owner@vger.kernel.org List-ID: Generate a tsf from jiffies. Prepare the path for having different tsf offsets on the each phy. This will be useful for testing mesh synchronization algorithms. Signed-off-by: Javier Cardona --- drivers/net/wireless/mac80211_hwsim.c | 20 +++++++++++++++++++- 1 files changed, 19 insertions(+), 1 deletions(-) diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index ba16f05..b926a89 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -321,11 +321,13 @@ struct mac80211_hwsim_data { struct dentry *debugfs_group; int power_level; + int tsf_offset; /* in TUs */ }; struct hwsim_radiotap_hdr { struct ieee80211_radiotap_header hdr; + u64 rt_tsft; u8 rt_flags; u8 rt_rate; __le16 rt_channel; @@ -367,6 +369,11 @@ static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb, return NETDEV_TX_OK; } +static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data) +{ + return cpu_to_le64(jiffies_to_msecs(jiffies)*1000/1024 + + data->tsf_offset); +} static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw, struct sk_buff *tx_skb) @@ -391,7 +398,9 @@ static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw, hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr)); hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) | (1 << IEEE80211_RADIOTAP_RATE) | + (1 << IEEE80211_RADIOTAP_TSFT) | (1 << IEEE80211_RADIOTAP_CHANNEL)); + hdr->rt_tsft = __mac80211_hwsim_get_tsf(data); hdr->rt_flags = 0; hdr->rt_rate = txrate->bitrate / 5; hdr->rt_channel = cpu_to_le16(data->channel->center_freq); @@ -610,7 +619,8 @@ static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw, } memset(&rx_status, 0, sizeof(rx_status)); - /* TODO: set mactime */ + rx_status.mactime = le64_to_cpu(__mac80211_hwsim_get_tsf(data)); + rx_status.flag |= RX_FLAG_MACTIME_MPDU; rx_status.freq = data->channel->center_freq; rx_status.band = data->channel->band; rx_status.rate_idx = info->control.rates[0].idx; @@ -763,9 +773,12 @@ static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac, struct ieee80211_vif *vif) { struct ieee80211_hw *hw = arg; + struct mac80211_hwsim_data *data = hw->priv; struct sk_buff *skb; struct ieee80211_tx_info *info; u32 _pid; + struct ieee80211_hdr_3addr *hdr; + __le64 *tsfpos; hwsim_check_magic(vif); @@ -779,6 +792,11 @@ static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac, return; info = IEEE80211_SKB_CB(skb); + /* add the timestamp to the beacon */ + hdr = (struct ieee80211_hdr_3addr *) skb->data; + tsfpos = (__le64 *) (hdr + 1); + put_unaligned(__mac80211_hwsim_get_tsf(data), tsfpos); + mac80211_hwsim_monitor_rx(hw, skb); /* wmediumd mode check */ -- 1.7.6