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Message-Id: <1377074477-31306-2-git-send-email-luis.henriques@canonical.com>
Date: Wed, 21 Aug 2013 09:41:17 +0100
From: Luis Henriques <luis.henriques@...onical.com>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org,
kernel-team@...ts.ubuntu.com
Cc: lwn@....net
Subject: Re: [3.5.y.z extended stable] Linux 3.5.7.20
diff --git a/Makefile b/Makefile
index fa278f9..4fdc06d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
VERSION = 3
PATCHLEVEL = 5
SUBLEVEL = 7
-EXTRAVERSION = .19
+EXTRAVERSION = .20
NAME = Saber-toothed Squirrel
# *DOCUMENTATION*
diff --git a/drivers/net/wireless/iwlegacy/common.c b/drivers/net/wireless/iwlegacy/common.c
index 82374de..e2b25eb 100644
--- a/drivers/net/wireless/iwlegacy/common.c
+++ b/drivers/net/wireless/iwlegacy/common.c
@@ -5351,7 +5351,7 @@ il_mac_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
if (changes & BSS_CHANGED_ASSOC) {
D_MAC80211("ASSOC %d\n", bss_conf->assoc);
if (bss_conf->assoc) {
- il->timestamp = bss_conf->last_tsf;
+ il->timestamp = bss_conf->sync_tsf;
if (!il_is_rfkill(il))
il->ops->post_associate(il);
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
index b1100b2..d09529c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
@@ -1463,7 +1463,7 @@ void iwlagn_bss_info_changed(struct ieee80211_hw *hw,
if (changes & BSS_CHANGED_ASSOC) {
if (bss_conf->assoc) {
- priv->timestamp = bss_conf->last_tsf;
+ priv->timestamp = bss_conf->sync_tsf;
ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
} else {
/*
diff --git a/drivers/net/wireless/rt2x00/rt2x00config.c b/drivers/net/wireless/rt2x00/rt2x00config.c
index e7361d9..49a63e9 100644
--- a/drivers/net/wireless/rt2x00/rt2x00config.c
+++ b/drivers/net/wireless/rt2x00/rt2x00config.c
@@ -102,7 +102,7 @@ void rt2x00lib_config_erp(struct rt2x00_dev *rt2x00dev,
/* Update the AID, this is needed for dynamic PS support */
rt2x00dev->aid = bss_conf->assoc ? bss_conf->aid : 0;
- rt2x00dev->last_beacon = bss_conf->last_tsf;
+ rt2x00dev->last_beacon = bss_conf->sync_tsf;
/* Update global beacon interval time, this is needed for PS support */
rt2x00dev->beacon_int = bss_conf->beacon_int;
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 82942da..e248a61 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -233,8 +233,10 @@ enum ieee80211_rssi_event {
* valid in station mode only while @assoc is true and if also
* requested by %IEEE80211_HW_NEED_DTIM_PERIOD (cf. also hw conf
* @ps_dtim_period)
- * @last_tsf: last beacon's/probe response's TSF timestamp (could be old
+ * @sync_tsf: last beacon's/probe response's TSF timestamp (could be old
* as it may have been received during scanning long ago)
+ * @sync_device_ts: the device timestamp corresponding to the sync_tsf,
+ * the driver/device can use this to calculate synchronisation
* @beacon_int: beacon interval
* @assoc_capability: capabilities taken from assoc resp
* @basic_rates: bitmap of basic rates, each bit stands for an
@@ -281,7 +283,8 @@ struct ieee80211_bss_conf {
u8 dtim_period;
u16 beacon_int;
u16 assoc_capability;
- u64 last_tsf;
+ u64 sync_tsf;
+ u32 sync_device_ts;
u32 basic_rates;
int mcast_rate[IEEE80211_NUM_BANDS];
u16 ht_operation_mode;
@@ -696,6 +699,8 @@ enum mac80211_rx_flags {
*
* @mactime: value in microseconds of the 64-bit Time Synchronization Function
* (TSF) timer when the first data symbol (MPDU) arrived at the hardware.
+ * @device_timestamp: arbitrary timestamp for the device, mac80211 doesn't use
+ * it but can store it and pass it back to the driver for synchronisation
* @band: the active band when this frame was received
* @freq: frequency the radio was tuned to when receiving this frame, in MHz
* @signal: signal strength when receiving this frame, either in dBm, in dB or
@@ -709,6 +714,7 @@ enum mac80211_rx_flags {
*/
struct ieee80211_rx_status {
u64 mactime;
+ u32 device_timestamp;
enum ieee80211_band band;
int freq;
int signal;
diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h
index 6de00b2..ce51547 100644
--- a/net/mac80211/driver-trace.h
+++ b/net/mac80211/driver-trace.h
@@ -306,7 +306,8 @@ TRACE_EVENT(drv_bss_info_changed,
__field(u8, dtimper)
__field(u16, bcnint)
__field(u16, assoc_cap)
- __field(u64, timestamp)
+ __field(u64, sync_tsf)
+ __field(u32, sync_device_ts)
__field(u32, basic_rates)
__field(u32, changed)
__field(bool, enable_beacon)
@@ -325,7 +326,8 @@ TRACE_EVENT(drv_bss_info_changed,
__entry->dtimper = info->dtim_period;
__entry->bcnint = info->beacon_int;
__entry->assoc_cap = info->assoc_capability;
- __entry->timestamp = info->last_tsf;
+ __entry->sync_tsf = info->sync_tsf;
+ __entry->sync_device_ts = info->sync_device_ts;
__entry->basic_rates = info->basic_rates;
__entry->enable_beacon = info->enable_beacon;
__entry->ht_operation_mode = info->ht_operation_mode;
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 1d025ca..38ba70e 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -81,6 +81,8 @@ struct ieee80211_bss {
size_t ssid_len;
u8 ssid[IEEE80211_MAX_SSID_LEN];
+ u32 device_ts;
+
bool wmm_used;
bool uapsd_supported;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 4549e7e..ffca767 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1280,11 +1280,6 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
bss_info_changed |= BSS_CHANGED_ASSOC;
- /* set timing information */
- bss_conf->beacon_int = cbss->beacon_interval;
- bss_conf->last_tsf = cbss->tsf;
-
- bss_info_changed |= BSS_CHANGED_BEACON_INT;
bss_info_changed |= ieee80211_handle_bss_capability(sdata,
cbss->capability, bss->has_erp_value, bss->erp_value);
@@ -3173,9 +3168,15 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
- /* tell driver about BSSID and basic rates */
+ /* set timing information */
+ sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
+ sdata->vif.bss_conf.sync_tsf = cbss->tsf;
+ sdata->vif.bss_conf.sync_device_ts = bss->device_ts;
+
+ /* tell driver about BSSID, basic rates and timing */
ieee80211_bss_info_change_notify(sdata,
- BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES);
+ BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
+ BSS_CHANGED_BEACON_INT);
if (assoc)
sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index bb456ac..b73ce0a 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -83,13 +83,14 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
cbss = cfg80211_inform_bss_frame(local->hw.wiphy, channel,
mgmt, len, signal, GFP_ATOMIC);
-
if (!cbss)
return NULL;
cbss->free_priv = ieee80211_rx_bss_free;
bss = (void *)cbss->priv;
+ bss->device_ts = rx_status->device_timestamp;
+
if (elems->parse_error) {
if (beacon)
bss->corrupt_data |= IEEE80211_BSS_CORRUPT_BEACON;
--
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