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172 lines
4.1 KiB
172 lines
4.1 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* This file is part of wl1271 |
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* |
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* Copyright (C) 2008-2009 Nokia Corporation |
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* |
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* Contact: Luciano Coelho <[email protected]> |
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*/ |
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#include "ps.h" |
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#include "io.h" |
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#include "tx.h" |
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#include "debug.h" |
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int wl1271_ps_set_mode(struct wl1271 *wl, struct wl12xx_vif *wlvif, |
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enum wl1271_cmd_ps_mode mode) |
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{ |
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int ret; |
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u16 timeout = wl->conf.conn.dynamic_ps_timeout; |
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switch (mode) { |
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case STATION_AUTO_PS_MODE: |
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case STATION_POWER_SAVE_MODE: |
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wl1271_debug(DEBUG_PSM, "entering psm (mode=%d,timeout=%u)", |
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mode, timeout); |
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ret = wl1271_acx_wake_up_conditions(wl, wlvif, |
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wl->conf.conn.wake_up_event, |
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wl->conf.conn.listen_interval); |
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if (ret < 0) { |
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wl1271_error("couldn't set wake up conditions"); |
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return ret; |
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} |
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ret = wl1271_cmd_ps_mode(wl, wlvif, mode, timeout); |
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if (ret < 0) |
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return ret; |
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set_bit(WLVIF_FLAG_IN_PS, &wlvif->flags); |
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/* |
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* enable beacon early termination. |
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* Not relevant for 5GHz and for high rates. |
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*/ |
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if ((wlvif->band == NL80211_BAND_2GHZ) && |
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(wlvif->basic_rate < CONF_HW_BIT_RATE_9MBPS)) { |
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ret = wl1271_acx_bet_enable(wl, wlvif, true); |
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if (ret < 0) |
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return ret; |
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} |
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break; |
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case STATION_ACTIVE_MODE: |
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wl1271_debug(DEBUG_PSM, "leaving psm"); |
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/* disable beacon early termination */ |
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if ((wlvif->band == NL80211_BAND_2GHZ) && |
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(wlvif->basic_rate < CONF_HW_BIT_RATE_9MBPS)) { |
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ret = wl1271_acx_bet_enable(wl, wlvif, false); |
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if (ret < 0) |
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return ret; |
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} |
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ret = wl1271_cmd_ps_mode(wl, wlvif, mode, 0); |
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if (ret < 0) |
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return ret; |
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clear_bit(WLVIF_FLAG_IN_PS, &wlvif->flags); |
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break; |
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default: |
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wl1271_warning("trying to set ps to unsupported mode %d", mode); |
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ret = -EINVAL; |
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} |
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return ret; |
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} |
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static void wl1271_ps_filter_frames(struct wl1271 *wl, u8 hlid) |
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{ |
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int i; |
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struct sk_buff *skb; |
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struct ieee80211_tx_info *info; |
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unsigned long flags; |
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int filtered[NUM_TX_QUEUES]; |
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struct wl1271_link *lnk = &wl->links[hlid]; |
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/* filter all frames currently in the low level queues for this hlid */ |
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for (i = 0; i < NUM_TX_QUEUES; i++) { |
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filtered[i] = 0; |
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while ((skb = skb_dequeue(&lnk->tx_queue[i]))) { |
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filtered[i]++; |
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if (WARN_ON(wl12xx_is_dummy_packet(wl, skb))) |
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continue; |
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info = IEEE80211_SKB_CB(skb); |
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info->flags |= IEEE80211_TX_STAT_TX_FILTERED; |
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info->status.rates[0].idx = -1; |
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ieee80211_tx_status_ni(wl->hw, skb); |
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} |
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} |
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spin_lock_irqsave(&wl->wl_lock, flags); |
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for (i = 0; i < NUM_TX_QUEUES; i++) { |
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wl->tx_queue_count[i] -= filtered[i]; |
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if (lnk->wlvif) |
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lnk->wlvif->tx_queue_count[i] -= filtered[i]; |
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} |
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spin_unlock_irqrestore(&wl->wl_lock, flags); |
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wl1271_handle_tx_low_watermark(wl); |
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} |
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void wl12xx_ps_link_start(struct wl1271 *wl, struct wl12xx_vif *wlvif, |
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u8 hlid, bool clean_queues) |
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{ |
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struct ieee80211_sta *sta; |
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struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif); |
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if (WARN_ON_ONCE(wlvif->bss_type != BSS_TYPE_AP_BSS)) |
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return; |
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if (!test_bit(hlid, wlvif->ap.sta_hlid_map) || |
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test_bit(hlid, &wl->ap_ps_map)) |
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return; |
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wl1271_debug(DEBUG_PSM, "start mac80211 PSM on hlid %d pkts %d " |
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"clean_queues %d", hlid, wl->links[hlid].allocated_pkts, |
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clean_queues); |
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rcu_read_lock(); |
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sta = ieee80211_find_sta(vif, wl->links[hlid].addr); |
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if (!sta) { |
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wl1271_error("could not find sta %pM for starting ps", |
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wl->links[hlid].addr); |
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rcu_read_unlock(); |
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return; |
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} |
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ieee80211_sta_ps_transition_ni(sta, true); |
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rcu_read_unlock(); |
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/* do we want to filter all frames from this link's queues? */ |
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if (clean_queues) |
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wl1271_ps_filter_frames(wl, hlid); |
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__set_bit(hlid, &wl->ap_ps_map); |
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} |
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void wl12xx_ps_link_end(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 hlid) |
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{ |
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struct ieee80211_sta *sta; |
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struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif); |
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if (!test_bit(hlid, &wl->ap_ps_map)) |
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return; |
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wl1271_debug(DEBUG_PSM, "end mac80211 PSM on hlid %d", hlid); |
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__clear_bit(hlid, &wl->ap_ps_map); |
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rcu_read_lock(); |
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sta = ieee80211_find_sta(vif, wl->links[hlid].addr); |
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if (!sta) { |
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wl1271_error("could not find sta %pM for ending ps", |
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wl->links[hlid].addr); |
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goto end; |
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} |
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ieee80211_sta_ps_transition_ni(sta, false); |
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end: |
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rcu_read_unlock(); |
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}
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