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Diffstat (limited to 'net/mac80211/mlme.c')
-rw-r--r--net/mac80211/mlme.c142
1 files changed, 138 insertions, 4 deletions
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;
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-03 22:07:30 +0300