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-rw-r--r--package/kernel/mac80211/patches/subsys/322-mac80211-Add-airtime-accounting-and-scheduling-to-TX.patch522
1 files changed, 0 insertions, 522 deletions
diff --git a/package/kernel/mac80211/patches/subsys/322-mac80211-Add-airtime-accounting-and-scheduling-to-TX.patch b/package/kernel/mac80211/patches/subsys/322-mac80211-Add-airtime-accounting-and-scheduling-to-TX.patch
deleted file mode 100644
index d4176eb491..0000000000
--- a/package/kernel/mac80211/patches/subsys/322-mac80211-Add-airtime-accounting-and-scheduling-to-TX.patch
+++ /dev/null
@@ -1,522 +0,0 @@
-From: =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= <toke@toke.dk>
-Date: Tue, 18 Dec 2018 17:02:08 -0800
-Subject: [PATCH] mac80211: Add airtime accounting and scheduling to TXQs
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-This adds airtime accounting and scheduling to the mac80211 TXQ
-scheduler. A new callback, ieee80211_sta_register_airtime(), is added
-that drivers can call to report airtime usage for stations.
-
-When airtime information is present, mac80211 will schedule TXQs
-(through ieee80211_next_txq()) in a way that enforces airtime fairness
-between active stations. This scheduling works the same way as the ath9k
-in-driver airtime fairness scheduling. If no airtime usage is reported
-by the driver, the scheduler will default to round-robin scheduling.
-
-For drivers that don't control TXQ scheduling in software, a new API
-function, ieee80211_txq_may_transmit(), is added which the driver can use
-to check if the TXQ is eligible for transmission, or should be throttled to
-enforce fairness. Calls to this function must also be enclosed in
-ieee80211_txq_schedule_{start,end}() calls to ensure proper locking.
-
-The API ieee80211_txq_may_transmit() also ensures that TXQ list will be
-aligned aginst driver's own round-robin scheduler list. i.e it rotates
-the TXQ list till it makes the requested node becomes the first entry
-in TXQ list. Thus both the TXQ list and driver's list are in sync.
-
-Co-developed-by: Rajkumar Manoharan <rmanohar@codeaurora.org>
-Signed-off-by: Louie Lu <git@louie.lu>
-[added debugfs write op to reset airtime counter]
-Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
-Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org>
-Signed-off-by: Johannes Berg <johannes.berg@intel.com>
----
-
---- a/include/net/mac80211.h
-+++ b/include/net/mac80211.h
-@@ -2304,6 +2304,9 @@ enum ieee80211_hw_flags {
- * supported by HW.
- * @max_nan_de_entries: maximum number of NAN DE functions supported by the
- * device.
-+ *
-+ * @weight_multipler: Driver specific airtime weight multiplier used while
-+ * refilling deficit of each TXQ.
- */
- struct ieee80211_hw {
- struct ieee80211_conf conf;
-@@ -2339,6 +2342,7 @@ struct ieee80211_hw {
- u8 n_cipher_schemes;
- const struct ieee80211_cipher_scheme *cipher_schemes;
- u8 max_nan_de_entries;
-+ u8 weight_multiplier;
- };
-
- static inline bool _ieee80211_hw_check(struct ieee80211_hw *hw,
-@@ -5299,6 +5303,34 @@ void ieee80211_sta_eosp(struct ieee80211
- void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid);
-
- /**
-+ * ieee80211_sta_register_airtime - register airtime usage for a sta/tid
-+ *
-+ * Register airtime usage for a given sta on a given tid. The driver can call
-+ * this function to notify mac80211 that a station used a certain amount of
-+ * airtime. This information will be used by the TXQ scheduler to schedule
-+ * stations in a way that ensures airtime fairness.
-+ *
-+ * The reported airtime should as a minimum include all time that is spent
-+ * transmitting to the remote station, including overhead and padding, but not
-+ * including time spent waiting for a TXOP. If the time is not reported by the
-+ * hardware it can in some cases be calculated from the rate and known frame
-+ * composition. When possible, the time should include any failed transmission
-+ * attempts.
-+ *
-+ * The driver can either call this function synchronously for every packet or
-+ * aggregate, or asynchronously as airtime usage information becomes available.
-+ * TX and RX airtime can be reported together, or separately by setting one of
-+ * them to 0.
-+ *
-+ * @pubsta: the station
-+ * @tid: the TID to register airtime for
-+ * @tx_airtime: airtime used during TX (in usec)
-+ * @rx_airtime: airtime used during RX (in usec)
-+ */
-+void ieee80211_sta_register_airtime(struct ieee80211_sta *pubsta, u8 tid,
-+ u32 tx_airtime, u32 rx_airtime);
-+
-+/**
- * ieee80211_iter_keys - iterate keys programmed into the device
- * @hw: pointer obtained from ieee80211_alloc_hw()
- * @vif: virtual interface to iterate, may be %NULL for all
-@@ -6042,6 +6074,33 @@ void ieee80211_txq_schedule_end(struct i
- __releases(txq_lock);
-
- /**
-+ * ieee80211_txq_may_transmit - check whether TXQ is allowed to transmit
-+ *
-+ * This function is used to check whether given txq is allowed to transmit by
-+ * the airtime scheduler, and can be used by drivers to access the airtime
-+ * fairness accounting without going using the scheduling order enfored by
-+ * next_txq().
-+ *
-+ * Returns %true if the airtime scheduler thinks the TXQ should be allowed to
-+ * transmit, and %false if it should be throttled. This function can also have
-+ * the side effect of rotating the TXQ in the scheduler rotation, which will
-+ * eventually bring the deficit to positive and allow the station to transmit
-+ * again.
-+ *
-+ * The API ieee80211_txq_may_transmit() also ensures that TXQ list will be
-+ * aligned aginst driver's own round-robin scheduler list. i.e it rotates
-+ * the TXQ list till it makes the requested node becomes the first entry
-+ * in TXQ list. Thus both the TXQ list and driver's list are in sync. If this
-+ * function returns %true, the driver is expected to schedule packets
-+ * for transmission, and then return the TXQ through ieee80211_return_txq().
-+ *
-+ * @hw: pointer as obtained from ieee80211_alloc_hw()
-+ * @txq: pointer obtained from station or virtual interface
-+ */
-+bool ieee80211_txq_may_transmit(struct ieee80211_hw *hw,
-+ struct ieee80211_txq *txq);
-+
-+/**
- * ieee80211_txq_get_depth - get pending frame/byte count of given txq
- *
- * The values are not guaranteed to be coherent with regard to each other, i.e.
---- a/net/mac80211/cfg.c
-+++ b/net/mac80211/cfg.c
-@@ -1434,6 +1434,9 @@ static int sta_apply_parameters(struct i
- if (ieee80211_vif_is_mesh(&sdata->vif))
- sta_apply_mesh_params(local, sta, params);
-
-+ if (params->airtime_weight)
-+ sta->airtime_weight = params->airtime_weight;
-+
- /* set the STA state after all sta info from usermode has been set */
- if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
- set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
---- a/net/mac80211/debugfs.c
-+++ b/net/mac80211/debugfs.c
-@@ -380,6 +380,9 @@ void debugfs_hw_add(struct ieee80211_loc
- if (local->ops->wake_tx_queue)
- DEBUGFS_ADD_MODE(aqm, 0600);
-
-+ debugfs_create_u16("airtime_flags", 0600,
-+ phyd, &local->airtime_flags);
-+
- statsd = debugfs_create_dir("statistics", phyd);
-
- /* if the dir failed, don't put all the other things into the root! */
---- a/net/mac80211/debugfs_sta.c
-+++ b/net/mac80211/debugfs_sta.c
-@@ -178,9 +178,9 @@ static ssize_t sta_aqm_read(struct file
- txqi->tin.tx_bytes,
- txqi->tin.tx_packets,
- txqi->flags,
-- txqi->flags & (1<<IEEE80211_TXQ_STOP) ? "STOP" : "RUN",
-- txqi->flags & (1<<IEEE80211_TXQ_AMPDU) ? " AMPDU" : "",
-- txqi->flags & (1<<IEEE80211_TXQ_NO_AMSDU) ? " NO-AMSDU" : "");
-+ test_bit(IEEE80211_TXQ_STOP, &txqi->flags) ? "STOP" : "RUN",
-+ test_bit(IEEE80211_TXQ_AMPDU, &txqi->flags) ? " AMPDU" : "",
-+ test_bit(IEEE80211_TXQ_NO_AMSDU, &txqi->flags) ? " NO-AMSDU" : "");
- }
-
- rcu_read_unlock();
-@@ -192,6 +192,64 @@ static ssize_t sta_aqm_read(struct file
- }
- STA_OPS(aqm);
-
-+static ssize_t sta_airtime_read(struct file *file, char __user *userbuf,
-+ size_t count, loff_t *ppos)
-+{
-+ struct sta_info *sta = file->private_data;
-+ struct ieee80211_local *local = sta->sdata->local;
-+ size_t bufsz = 200;
-+ char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
-+ u64 rx_airtime = 0, tx_airtime = 0;
-+ s64 deficit[IEEE80211_NUM_ACS];
-+ ssize_t rv;
-+ int ac;
-+
-+ if (!buf)
-+ return -ENOMEM;
-+
-+ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
-+ spin_lock_bh(&local->active_txq_lock[ac]);
-+ rx_airtime += sta->airtime[ac].rx_airtime;
-+ tx_airtime += sta->airtime[ac].tx_airtime;
-+ deficit[ac] = sta->airtime[ac].deficit;
-+ spin_unlock_bh(&local->active_txq_lock[ac]);
-+ }
-+
-+ p += scnprintf(p, bufsz + buf - p,
-+ "RX: %llu us\nTX: %llu us\nWeight: %u\n"
-+ "Deficit: VO: %lld us VI: %lld us BE: %lld us BK: %lld us\n",
-+ rx_airtime,
-+ tx_airtime,
-+ sta->airtime_weight,
-+ deficit[0],
-+ deficit[1],
-+ deficit[2],
-+ deficit[3]);
-+
-+ rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
-+ kfree(buf);
-+ return rv;
-+}
-+
-+static ssize_t sta_airtime_write(struct file *file, const char __user *userbuf,
-+ size_t count, loff_t *ppos)
-+{
-+ struct sta_info *sta = file->private_data;
-+ struct ieee80211_local *local = sta->sdata->local;
-+ int ac;
-+
-+ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
-+ spin_lock_bh(&local->active_txq_lock[ac]);
-+ sta->airtime[ac].rx_airtime = 0;
-+ sta->airtime[ac].tx_airtime = 0;
-+ sta->airtime[ac].deficit = sta->airtime_weight;
-+ spin_unlock_bh(&local->active_txq_lock[ac]);
-+ }
-+
-+ return count;
-+}
-+STA_OPS_RW(airtime);
-+
- static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
- size_t count, loff_t *ppos)
- {
-@@ -546,6 +604,10 @@ void ieee80211_sta_debugfs_add(struct st
- if (local->ops->wake_tx_queue)
- DEBUGFS_ADD(aqm);
-
-+ if (wiphy_ext_feature_isset(local->hw.wiphy,
-+ NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
-+ DEBUGFS_ADD(airtime);
-+
- if (sizeof(sta->driver_buffered_tids) == sizeof(u32))
- debugfs_create_x32("driver_buffered_tids", 0400,
- sta->debugfs_dir,
---- a/net/mac80211/ieee80211_i.h
-+++ b/net/mac80211/ieee80211_i.h
-@@ -1136,6 +1136,8 @@ struct ieee80211_local {
- struct list_head active_txqs[IEEE80211_NUM_ACS];
- u16 schedule_round[IEEE80211_NUM_ACS];
-
-+ u16 airtime_flags;
-+
- const struct ieee80211_ops *ops;
-
- /*
---- a/net/mac80211/main.c
-+++ b/net/mac80211/main.c
-@@ -656,6 +656,7 @@ struct ieee80211_hw *ieee80211_alloc_hw_
- INIT_LIST_HEAD(&local->active_txqs[i]);
- spin_lock_init(&local->active_txq_lock[i]);
- }
-+ local->airtime_flags = AIRTIME_USE_TX | AIRTIME_USE_RX;
-
- INIT_LIST_HEAD(&local->chanctx_list);
- mutex_init(&local->chanctx_mtx);
-@@ -1142,6 +1143,9 @@ int ieee80211_register_hw(struct ieee802
- if (!local->hw.max_nan_de_entries)
- local->hw.max_nan_de_entries = IEEE80211_MAX_NAN_INSTANCE_ID;
-
-+ if (!local->hw.weight_multiplier)
-+ local->hw.weight_multiplier = 1;
-+
- result = ieee80211_wep_init(local);
- if (result < 0)
- wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
---- a/net/mac80211/sta_info.c
-+++ b/net/mac80211/sta_info.c
-@@ -90,7 +90,6 @@ static void __cleanup_single_sta(struct
- struct tid_ampdu_tx *tid_tx;
- struct ieee80211_sub_if_data *sdata = sta->sdata;
- struct ieee80211_local *local = sdata->local;
-- struct fq *fq = &local->fq;
- struct ps_data *ps;
-
- if (test_sta_flag(sta, WLAN_STA_PS_STA) ||
-@@ -115,9 +114,7 @@ static void __cleanup_single_sta(struct
- for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
- struct txq_info *txqi = to_txq_info(sta->sta.txq[i]);
-
-- spin_lock_bh(&fq->lock);
- ieee80211_txq_purge(local, txqi);
-- spin_unlock_bh(&fq->lock);
- }
- }
-
-@@ -381,9 +378,12 @@ struct sta_info *sta_info_alloc(struct i
- if (sta_prepare_rate_control(local, sta, gfp))
- goto free_txq;
-
-+ sta->airtime_weight = IEEE80211_DEFAULT_AIRTIME_WEIGHT;
-+
- for (i = 0; i < IEEE80211_NUM_ACS; i++) {
- skb_queue_head_init(&sta->ps_tx_buf[i]);
- skb_queue_head_init(&sta->tx_filtered[i]);
-+ sta->airtime[i].deficit = sta->airtime_weight;
- }
-
- for (i = 0; i < IEEE80211_NUM_TIDS; i++)
-@@ -1821,6 +1821,27 @@ void ieee80211_sta_set_buffered(struct i
- }
- EXPORT_SYMBOL(ieee80211_sta_set_buffered);
-
-+void ieee80211_sta_register_airtime(struct ieee80211_sta *pubsta, u8 tid,
-+ u32 tx_airtime, u32 rx_airtime)
-+{
-+ struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
-+ struct ieee80211_local *local = sta->sdata->local;
-+ u8 ac = ieee80211_ac_from_tid(tid);
-+ u32 airtime = 0;
-+
-+ if (sta->local->airtime_flags & AIRTIME_USE_TX)
-+ airtime += tx_airtime;
-+ if (sta->local->airtime_flags & AIRTIME_USE_RX)
-+ airtime += rx_airtime;
-+
-+ spin_lock_bh(&local->active_txq_lock[ac]);
-+ sta->airtime[ac].tx_airtime += tx_airtime;
-+ sta->airtime[ac].rx_airtime += rx_airtime;
-+ sta->airtime[ac].deficit -= airtime;
-+ spin_unlock_bh(&local->active_txq_lock[ac]);
-+}
-+EXPORT_SYMBOL(ieee80211_sta_register_airtime);
-+
- int sta_info_move_state(struct sta_info *sta,
- enum ieee80211_sta_state new_state)
- {
-@@ -2183,6 +2204,23 @@ void sta_set_sinfo(struct sta_info *sta,
- sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_FAILED);
- }
-
-+ if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_DURATION))) {
-+ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
-+ sinfo->rx_duration += sta->airtime[ac].rx_airtime;
-+ sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_DURATION);
-+ }
-+
-+ if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_DURATION))) {
-+ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
-+ sinfo->tx_duration += sta->airtime[ac].tx_airtime;
-+ sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_DURATION);
-+ }
-+
-+ if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT))) {
-+ sinfo->airtime_weight = sta->airtime_weight;
-+ sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT);
-+ }
-+
- sinfo->rx_dropped_misc = sta->rx_stats.dropped;
- if (sta->pcpu_rx_stats) {
- for_each_possible_cpu(cpu) {
---- a/net/mac80211/sta_info.h
-+++ b/net/mac80211/sta_info.h
-@@ -127,6 +127,16 @@ enum ieee80211_agg_stop_reason {
- AGG_STOP_DESTROY_STA,
- };
-
-+/* Debugfs flags to enable/disable use of RX/TX airtime in scheduler */
-+#define AIRTIME_USE_TX BIT(0)
-+#define AIRTIME_USE_RX BIT(1)
-+
-+struct airtime_info {
-+ u64 rx_airtime;
-+ u64 tx_airtime;
-+ s64 deficit;
-+};
-+
- struct sta_info;
-
- /**
-@@ -563,6 +573,9 @@ struct sta_info {
- } tx_stats;
- u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1];
-
-+ struct airtime_info airtime[IEEE80211_NUM_ACS];
-+ u16 airtime_weight;
-+
- /*
- * Aggregation information, locked with lock.
- */
---- a/net/mac80211/status.c
-+++ b/net/mac80211/status.c
-@@ -825,6 +825,12 @@ static void __ieee80211_tx_status(struct
- ieee80211_sta_tx_notify(sta->sdata, (void *) skb->data,
- acked, info->status.tx_time);
-
-+ if (info->status.tx_time &&
-+ wiphy_ext_feature_isset(local->hw.wiphy,
-+ NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
-+ ieee80211_sta_register_airtime(&sta->sta, tid,
-+ info->status.tx_time, 0);
-+
- if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
- if (info->flags & IEEE80211_TX_STAT_ACK) {
- if (sta->status_stats.lost_packets)
---- a/net/mac80211/tx.c
-+++ b/net/mac80211/tx.c
-@@ -1463,8 +1463,11 @@ void ieee80211_txq_purge(struct ieee8021
- struct fq *fq = &local->fq;
- struct fq_tin *tin = &txqi->tin;
-
-+ spin_lock_bh(&fq->lock);
- fq_tin_reset(fq, tin, fq_skb_free_func);
- ieee80211_purge_tx_queue(&local->hw, &txqi->frags);
-+ spin_unlock_bh(&fq->lock);
-+
- spin_lock_bh(&local->active_txq_lock[txqi->txq.ac]);
- list_del_init(&txqi->schedule_order);
- spin_unlock_bh(&local->active_txq_lock[txqi->txq.ac]);
-@@ -3613,11 +3616,28 @@ struct ieee80211_txq *ieee80211_next_txq
-
- lockdep_assert_held(&local->active_txq_lock[ac]);
-
-+ begin:
- txqi = list_first_entry_or_null(&local->active_txqs[ac],
- struct txq_info,
- schedule_order);
-+ if (!txqi)
-+ return NULL;
-+
-+ if (txqi->txq.sta) {
-+ struct sta_info *sta = container_of(txqi->txq.sta,
-+ struct sta_info, sta);
-+
-+ if (sta->airtime[txqi->txq.ac].deficit < 0) {
-+ sta->airtime[txqi->txq.ac].deficit +=
-+ sta->airtime_weight;
-+ list_move_tail(&txqi->schedule_order,
-+ &local->active_txqs[txqi->txq.ac]);
-+ goto begin;
-+ }
-+ }
-+
-
-- if (!txqi || txqi->schedule_round == local->schedule_round[ac])
-+ if (txqi->schedule_round == local->schedule_round[ac])
- return NULL;
-
- list_del_init(&txqi->schedule_order);
-@@ -3635,12 +3655,74 @@ void ieee80211_return_txq(struct ieee802
- lockdep_assert_held(&local->active_txq_lock[txq->ac]);
-
- if (list_empty(&txqi->schedule_order) &&
-- (!skb_queue_empty(&txqi->frags) || txqi->tin.backlog_packets))
-- list_add_tail(&txqi->schedule_order,
-- &local->active_txqs[txq->ac]);
-+ (!skb_queue_empty(&txqi->frags) || txqi->tin.backlog_packets)) {
-+ /* If airtime accounting is active, always enqueue STAs at the
-+ * head of the list to ensure that they only get moved to the
-+ * back by the airtime DRR scheduler once they have a negative
-+ * deficit. A station that already has a negative deficit will
-+ * get immediately moved to the back of the list on the next
-+ * call to ieee80211_next_txq().
-+ */
-+ if (txqi->txq.sta &&
-+ wiphy_ext_feature_isset(local->hw.wiphy,
-+ NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
-+ list_add(&txqi->schedule_order,
-+ &local->active_txqs[txq->ac]);
-+ else
-+ list_add_tail(&txqi->schedule_order,
-+ &local->active_txqs[txq->ac]);
-+ }
- }
- EXPORT_SYMBOL(ieee80211_return_txq);
-
-+bool ieee80211_txq_may_transmit(struct ieee80211_hw *hw,
-+ struct ieee80211_txq *txq)
-+{
-+ struct ieee80211_local *local = hw_to_local(hw);
-+ struct txq_info *iter, *tmp, *txqi = to_txq_info(txq);
-+ struct sta_info *sta;
-+ u8 ac = txq->ac;
-+
-+ lockdep_assert_held(&local->active_txq_lock[ac]);
-+
-+ if (!txqi->txq.sta)
-+ goto out;
-+
-+ if (list_empty(&txqi->schedule_order))
-+ goto out;
-+
-+ list_for_each_entry_safe(iter, tmp, &local->active_txqs[ac],
-+ schedule_order) {
-+ if (iter == txqi)
-+ break;
-+
-+ if (!iter->txq.sta) {
-+ list_move_tail(&iter->schedule_order,
-+ &local->active_txqs[ac]);
-+ continue;
-+ }
-+ sta = container_of(iter->txq.sta, struct sta_info, sta);
-+ if (sta->airtime[ac].deficit < 0)
-+ sta->airtime[ac].deficit += sta->airtime_weight;
-+ list_move_tail(&iter->schedule_order, &local->active_txqs[ac]);
-+ }
-+
-+ sta = container_of(txqi->txq.sta, struct sta_info, sta);
-+ if (sta->airtime[ac].deficit >= 0)
-+ goto out;
-+
-+ sta->airtime[ac].deficit += sta->airtime_weight;
-+ list_move_tail(&txqi->schedule_order, &local->active_txqs[ac]);
-+
-+ return false;
-+out:
-+ if (!list_empty(&txqi->schedule_order))
-+ list_del_init(&txqi->schedule_order);
-+
-+ return true;
-+}
-+EXPORT_SYMBOL(ieee80211_txq_may_transmit);
-+
- void ieee80211_txq_schedule_start(struct ieee80211_hw *hw, u8 ac)
- __acquires(txq_lock)
- {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 13:34:05 +0000