mirror of
https://github.com/outbackdingo/mt76.git
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Lorenzo BianconiandFelix Fietkau
45b8f5e36f
Move mt76x02_tx_prepare_skb routine in mt76x02-lib module in order to be reused by mt76x0 driver in tx datapath Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
143 lines
3.7 KiB
C
143 lines
3.7 KiB
C
/*
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* Copyright (C) 2016 Felix Fietkau <[email protected]>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "mt76x2.h"
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struct beacon_bc_data {
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struct mt76x02_dev *dev;
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struct sk_buff_head q;
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struct sk_buff *tail[8];
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};
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static void
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mt76x2_update_beacon_iter(void *priv, u8 *mac, struct ieee80211_vif *vif)
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{
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struct mt76x02_dev *dev = (struct mt76x02_dev *) priv;
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struct mt76x02_vif *mvif = (struct mt76x02_vif *) vif->drv_priv;
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struct sk_buff *skb = NULL;
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if (!(dev->beacon_mask & BIT(mvif->idx)))
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return;
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skb = ieee80211_beacon_get(mt76_hw(dev), vif);
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if (!skb)
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return;
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mt76x2_mac_set_beacon(dev, mvif->idx, skb);
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}
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static void
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mt76x2_add_buffered_bc(void *priv, u8 *mac, struct ieee80211_vif *vif)
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{
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struct beacon_bc_data *data = priv;
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struct mt76x02_dev *dev = data->dev;
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struct mt76x02_vif *mvif = (struct mt76x02_vif *) vif->drv_priv;
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struct ieee80211_tx_info *info;
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struct sk_buff *skb;
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if (!(dev->beacon_mask & BIT(mvif->idx)))
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return;
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skb = ieee80211_get_buffered_bc(mt76_hw(dev), vif);
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if (!skb)
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return;
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info = IEEE80211_SKB_CB(skb);
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info->control.vif = vif;
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info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
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mt76_skb_set_moredata(skb, true);
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__skb_queue_tail(&data->q, skb);
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data->tail[mvif->idx] = skb;
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}
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static void
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mt76x2_resync_beacon_timer(struct mt76x02_dev *dev)
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{
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u32 timer_val = dev->beacon_int << 4;
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dev->tbtt_count++;
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/*
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* Beacon timer drifts by 1us every tick, the timer is configured
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* in 1/16 TU (64us) units.
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*/
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if (dev->tbtt_count < 62)
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return;
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if (dev->tbtt_count >= 64) {
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dev->tbtt_count = 0;
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return;
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}
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/*
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* The updated beacon interval takes effect after two TBTT, because
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* at this point the original interval has already been loaded into
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* the next TBTT_TIMER value
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*/
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if (dev->tbtt_count == 62)
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timer_val -= 1;
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mt76_rmw_field(dev, MT_BEACON_TIME_CFG,
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MT_BEACON_TIME_CFG_INTVAL, timer_val);
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}
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void mt76x2_pre_tbtt_tasklet(unsigned long arg)
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{
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struct mt76x02_dev *dev = (struct mt76x02_dev *) arg;
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struct mt76_queue *q = &dev->mt76.q_tx[MT_TXQ_PSD];
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struct beacon_bc_data data = {};
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struct sk_buff *skb;
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int i, nframes;
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mt76x2_resync_beacon_timer(dev);
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data.dev = dev;
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__skb_queue_head_init(&data.q);
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ieee80211_iterate_active_interfaces_atomic(mt76_hw(dev),
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IEEE80211_IFACE_ITER_RESUME_ALL,
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mt76x2_update_beacon_iter, dev);
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do {
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nframes = skb_queue_len(&data.q);
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ieee80211_iterate_active_interfaces_atomic(mt76_hw(dev),
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IEEE80211_IFACE_ITER_RESUME_ALL,
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mt76x2_add_buffered_bc, &data);
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} while (nframes != skb_queue_len(&data.q));
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if (!nframes)
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return;
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for (i = 0; i < ARRAY_SIZE(data.tail); i++) {
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if (!data.tail[i])
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continue;
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mt76_skb_set_moredata(data.tail[i], false);
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}
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spin_lock_bh(&q->lock);
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while ((skb = __skb_dequeue(&data.q)) != NULL) {
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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struct ieee80211_vif *vif = info->control.vif;
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struct mt76x02_vif *mvif = (struct mt76x02_vif *) vif->drv_priv;
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mt76_dma_tx_queue_skb(&dev->mt76, q, skb, &mvif->group_wcid,
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NULL);
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}
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spin_unlock_bh(&q->lock);
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}
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