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-rw-r--r--net/mac80211/agg-tx.c5
-rw-r--r--net/mac80211/cfg.c73
-rw-r--r--net/mac80211/ieee80211_i.h38
-rw-r--r--net/mac80211/mlme.c142
-rw-r--r--net/mac80211/status.c3
-rw-r--r--net/mac80211/wme.c29
-rw-r--r--net/mac80211/wme.h2
7 files changed, 270 insertions, 22 deletions
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index d6986f3aa5c4..9242c60048cf 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -149,11 +149,6 @@ void ieee80211_assign_tid_tx(struct sta_info *sta, int tid,
rcu_assign_pointer(sta->ampdu_mlme.tid_tx[tid], tid_tx);
}
-static inline int ieee80211_ac_from_tid(int tid)
-{
- return ieee802_1d_to_ac[tid & 7];
-}
-
/*
* When multiple aggregation sessions on multiple stations
* are being created/destroyed simultaneously, we need to
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 64deb9aa0f81..d6b01ad2f7d7 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -20,6 +20,7 @@
#include "cfg.h"
#include "rate.h"
#include "mesh.h"
+#include "wme.h"
static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
const char *name,
@@ -3585,6 +3586,76 @@ static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
return ret;
}
+static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
+ u8 tsid, const u8 *peer, u8 up,
+ u16 admitted_time)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ int ac = ieee802_1d_to_ac[up];
+
+ if (sdata->vif.type != NL80211_IFTYPE_STATION)
+ return -EOPNOTSUPP;
+
+ if (!(sdata->wmm_acm & BIT(up)))
+ return -EINVAL;
+
+ if (ifmgd->tx_tspec[ac].admitted_time)
+ return -EBUSY;
+
+ if (admitted_time) {
+ ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
+ ifmgd->tx_tspec[ac].tsid = tsid;
+ ifmgd->tx_tspec[ac].up = up;
+ }
+
+ return 0;
+}
+
+static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
+ u8 tsid, const u8 *peer)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_local *local = wiphy_priv(wiphy);
+ int ac;
+
+ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
+ struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
+
+ /* skip unused entries */
+ if (!tx_tspec->admitted_time)
+ continue;
+
+ if (tx_tspec->tsid != tsid)
+ continue;
+
+ /* due to this new packets will be reassigned to non-ACM ACs */
+ tx_tspec->up = -1;
+
+ /* Make sure that all packets have been sent to avoid to
+ * restore the QoS params on packets that are still on the
+ * queues.
+ */
+ synchronize_net();
+ ieee80211_flush_queues(local, sdata);
+
+ /* restore the normal QoS parameters
+ * (unconditionally to avoid races)
+ */
+ tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
+ tx_tspec->downgraded = false;
+ ieee80211_sta_handle_tspec_ac_params(sdata);
+
+ /* finally clear all the data */
+ memset(tx_tspec, 0, sizeof(*tx_tspec));
+
+ return 0;
+ }
+
+ return -ENOENT;
+}
+
const struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
@@ -3663,4 +3734,6 @@ const struct cfg80211_ops mac80211_config_ops = {
.channel_switch = ieee80211_channel_switch,
.set_qos_map = ieee80211_set_qos_map,
.set_ap_chanwidth = ieee80211_set_ap_chanwidth,
+ .add_tx_ts = ieee80211_add_tx_ts,
+ .del_tx_ts = ieee80211_del_tx_ts,
};
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 78d6121eb372..60063be057d0 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -399,6 +399,24 @@ struct ieee80211_mgd_assoc_data {
u8 ie[];
};
+struct ieee80211_sta_tx_tspec {
+ /* timestamp of the first packet in the time slice */
+ unsigned long time_slice_start;
+
+ u32 admitted_time; /* in usecs, unlike over the air */
+ u8 tsid;
+ s8 up; /* signed to be able to invalidate with -1 during teardown */
+
+ /* consumed TX time in microseconds in the time slice */
+ u32 consumed_tx_time;
+ enum {
+ TX_TSPEC_ACTION_NONE = 0,
+ TX_TSPEC_ACTION_DOWNGRADE,
+ TX_TSPEC_ACTION_STOP_DOWNGRADE,
+ } action;
+ bool downgraded;
+};
+
struct ieee80211_if_managed {
struct timer_list timer;
struct timer_list conn_mon_timer;
@@ -509,6 +527,16 @@ struct ieee80211_if_managed {
u8 tdls_peer[ETH_ALEN] __aligned(2);
struct delayed_work tdls_peer_del_work;
+
+ /* WMM-AC TSPEC support */
+ struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
+ /* Use a separate work struct so that we can do something here
+ * while the sdata->work is flushing the queues, for example.
+ * otherwise, in scenarios where we hardly get any traffic out
+ * on the BE queue, but there's a lot of VO traffic, we might
+ * get stuck in a downgraded situation and flush takes forever.
+ */
+ struct delayed_work tx_tspec_wk;
};
struct ieee80211_if_ibss {
@@ -1459,6 +1487,7 @@ void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
__le16 fc, bool acked);
void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
+void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
/* IBSS code */
void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
@@ -1763,6 +1792,13 @@ static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames)
return true;
}
+extern const int ieee802_1d_to_ac[8];
+
+static inline int ieee80211_ac_from_tid(int tid)
+{
+ return ieee802_1d_to_ac[tid & 7];
+}
+
void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
void ieee80211_dynamic_ps_timer(unsigned long data);
@@ -1772,7 +1808,7 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
struct ieee80211_hdr *hdr);
void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_hdr *hdr, bool ack);
+ struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
unsigned long queues,
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index fb6561509caf..4d9b4d165ce8 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1606,6 +1606,95 @@ void ieee80211_dfs_cac_timer_work(struct work_struct *work)
mutex_unlock(&sdata->local->mtx);
}
+static bool
+__ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ bool ret;
+ int ac;
+
+ if (local->hw.queues < IEEE80211_NUM_ACS)
+ return false;
+
+ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
+ struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
+ int non_acm_ac;
+ unsigned long now = jiffies;
+
+ if (tx_tspec->action == TX_TSPEC_ACTION_NONE &&
+ tx_tspec->admitted_time &&
+ time_after(now, tx_tspec->time_slice_start + HZ)) {
+ tx_tspec->consumed_tx_time = 0;
+ tx_tspec->time_slice_start = now;
+
+ if (tx_tspec->downgraded)
+ tx_tspec->action =
+ TX_TSPEC_ACTION_STOP_DOWNGRADE;
+ }
+
+ switch (tx_tspec->action) {
+ case TX_TSPEC_ACTION_STOP_DOWNGRADE:
+ /* take the original parameters */
+ if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac]))
+ sdata_err(sdata,
+ "failed to set TX queue parameters for queue %d\n",
+ ac);
+ tx_tspec->action = TX_TSPEC_ACTION_NONE;
+ tx_tspec->downgraded = false;
+ ret = true;
+ break;
+ case TX_TSPEC_ACTION_DOWNGRADE:
+ if (time_after(now, tx_tspec->time_slice_start + HZ)) {
+ tx_tspec->action = TX_TSPEC_ACTION_NONE;
+ ret = true;
+ break;
+ }
+ /* downgrade next lower non-ACM AC */
+ for (non_acm_ac = ac + 1;
+ non_acm_ac < IEEE80211_NUM_ACS;
+ non_acm_ac++)
+ if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
+ break;
+ /* The loop will result in using BK even if it requires
+ * admission control, such configuration makes no sense
+ * and we have to transmit somehow - the AC selection
+ * does the same thing.
+ */
+ if (drv_conf_tx(local, sdata, ac,
+ &sdata->tx_conf[non_acm_ac]))
+ sdata_err(sdata,
+ "failed to set TX queue parameters for queue %d\n",
+ ac);
+ tx_tspec->action = TX_TSPEC_ACTION_NONE;
+ ret = true;
+ schedule_delayed_work(&ifmgd->tx_tspec_wk,
+ tx_tspec->time_slice_start + HZ - now + 1);
+ break;
+ case TX_TSPEC_ACTION_NONE:
+ /* nothing now */
+ break;
+ }
+ }
+
+ return ret;
+}
+
+void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
+{
+ if (__ieee80211_sta_handle_tspec_ac_params(sdata))
+ ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
+}
+
+static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = container_of(work, struct ieee80211_sub_if_data,
+ u.mgd.tx_tspec_wk.work);
+ ieee80211_sta_handle_tspec_ac_params(sdata);
+}
+
/* MLME */
static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
@@ -1690,12 +1779,14 @@ static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
params.uapsd = uapsd;
mlme_dbg(sdata,
- "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n",
+ "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
queue, aci, acm,
params.aifs, params.cw_min, params.cw_max,
- params.txop, params.uapsd);
+ params.txop, params.uapsd,
+ ifmgd->tx_tspec[queue].downgraded);
sdata->tx_conf[queue] = params;
- if (drv_conf_tx(local, sdata, queue, &params))
+ if (!ifmgd->tx_tspec[queue].downgraded &&
+ drv_conf_tx(local, sdata, queue, &params))
sdata_err(sdata,
"failed to set TX queue parameters for queue %d\n",
queue);
@@ -1958,6 +2049,10 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
}
mutex_unlock(&local->mtx);
+ /* existing TX TSPEC sessions no longer exist */
+ memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec));
+ cancel_delayed_work_sync(&ifmgd->tx_tspec_wk);
+
sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
}
@@ -2010,9 +2105,46 @@ out:
mutex_unlock(&local->mtx);
}
+static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_hdr *hdr,
+ u16 tx_time)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ u16 tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
+ int ac = ieee80211_ac_from_tid(tid);
+ struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
+ unsigned long now = jiffies;
+
+ if (likely(!tx_tspec->admitted_time))
+ return;
+
+ if (time_after(now, tx_tspec->time_slice_start + HZ)) {
+ tx_tspec->consumed_tx_time = 0;
+ tx_tspec->time_slice_start = now;
+
+ if (tx_tspec->downgraded) {
+ tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
+ schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
+ }
+ }
+
+ if (tx_tspec->downgraded)
+ return;
+
+ tx_tspec->consumed_tx_time += tx_time;
+
+ if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) {
+ tx_tspec->downgraded = true;
+ tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE;
+ schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
+ }
+}
+
void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_hdr *hdr, bool ack)
+ struct ieee80211_hdr *hdr, bool ack, u16 tx_time)
{
+ ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time);
+
if (!ieee80211_is_data(hdr->frame_control))
return;
@@ -3834,6 +3966,8 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
(unsigned long) sdata);
setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
(unsigned long) sdata);
+ INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk,
+ ieee80211_sta_handle_tspec_ac_params_wk);
ifmgd->flags = 0;
ifmgd->powersave = sdata->wdev.ps;
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 89290e33dafe..9612d89fad56 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -704,7 +704,8 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
if ((sta->sdata->vif.type == NL80211_IFTYPE_STATION) &&
(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS))
- ieee80211_sta_tx_notify(sta->sdata, (void *) skb->data, acked);
+ ieee80211_sta_tx_notify(sta->sdata, (void *) skb->data,
+ acked, info->status.tx_time);
if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
if (info->flags & IEEE80211_TX_STAT_ACK) {
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 3b873989992c..d3c5672d775f 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -54,10 +54,18 @@ static int wme_downgrade_ac(struct sk_buff *skb)
}
static u16 ieee80211_downgrade_queue(struct ieee80211_sub_if_data *sdata,
- struct sk_buff *skb)
+ struct sta_info *sta, struct sk_buff *skb)
{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+
/* in case we are a client verify acm is not set for this ac */
- while (unlikely(sdata->wmm_acm & BIT(skb->priority))) {
+ while (sdata->wmm_acm & BIT(skb->priority)) {
+ int ac = ieee802_1d_to_ac[skb->priority];
+
+ if (ifmgd->tx_tspec[ac].admitted_time &&
+ skb->priority == ifmgd->tx_tspec[ac].up)
+ return ac;
+
if (wme_downgrade_ac(skb)) {
/*
* This should not really happen. The AP has marked all
@@ -96,7 +104,7 @@ u16 ieee80211_select_queue_80211(struct ieee80211_sub_if_data *sdata,
p = ieee80211_get_qos_ctl(hdr);
skb->priority = *p & IEEE80211_QOS_CTL_TAG1D_MASK;
- return ieee80211_downgrade_queue(sdata, skb);
+ return ieee80211_downgrade_queue(sdata, NULL, skb);
}
/* Indicate which queue to use. */
@@ -108,6 +116,7 @@ u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
const u8 *ra = NULL;
bool qos = false;
struct mac80211_qos_map *qos_map;
+ u16 ret;
if (local->hw.queues < IEEE80211_NUM_ACS || skb->len < 6) {
skb->priority = 0; /* required for correct WPA/11i MIC */
@@ -148,27 +157,29 @@ u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
if (sta)
qos = sta->sta.wme;
}
- rcu_read_unlock();
if (!qos) {
skb->priority = 0; /* required for correct WPA/11i MIC */
- return IEEE80211_AC_BE;
+ ret = IEEE80211_AC_BE;
+ goto out;
}
if (skb->protocol == sdata->control_port_protocol) {
skb->priority = 7;
- return ieee80211_downgrade_queue(sdata, skb);
+ goto downgrade;
}
/* use the data classifier to determine what 802.1d tag the
* data frame has */
- rcu_read_lock();
qos_map = rcu_dereference(sdata->qos_map);
skb->priority = cfg80211_classify8021d(skb, qos_map ?
&qos_map->qos_map : NULL);
- rcu_read_unlock();
- return ieee80211_downgrade_queue(sdata, skb);
+ downgrade:
+ ret = ieee80211_downgrade_queue(sdata, sta, skb);
+ out:
+ rcu_read_unlock();
+ return ret;
}
/**
diff --git a/net/mac80211/wme.h b/net/mac80211/wme.h
index 7fea4bb8acbc..80151edc5195 100644
--- a/net/mac80211/wme.h
+++ b/net/mac80211/wme.h
@@ -13,8 +13,6 @@
#include <linux/netdevice.h>
#include "ieee80211_i.h"
-extern const int ieee802_1d_to_ac[8];
-
u16 ieee80211_select_queue_80211(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb,
struct ieee80211_hdr *hdr);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 19:31:51 +0000