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/*
* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "mt76x0.h"
#include "trace.h"
#include "../mt76x02_util.h"
#include "../mt76x02_usb.h"
static struct mt76x02_txwi *
mt76x0_push_txwi(struct mt76x0_dev *dev, struct sk_buff *skb,
struct ieee80211_sta *sta, struct mt76_wcid *wcid,
int pkt_len)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_rate *rate = &info->control.rates[0];
struct mt76x02_txwi *txwi;
unsigned long flags;
u16 rate_ctl;
u8 nss;
txwi = (struct mt76x02_txwi *)skb_push(skb, sizeof(struct mt76x02_txwi));
memset(txwi, 0, sizeof(*txwi));
if (!wcid->tx_rate_set)
ieee80211_get_tx_rates(info->control.vif, sta, skb,
info->control.rates, 1);
spin_lock_irqsave(&dev->mt76.lock, flags);
if (rate->idx < 0 || !rate->count) {
rate_ctl = wcid->tx_rate;
nss = wcid->tx_rate_nss;
} else {
rate_ctl = mt76x02_mac_tx_rate_val(&dev->mt76, rate, &nss);
}
spin_unlock_irqrestore(&dev->mt76.lock, flags);
txwi->wcid = wcid->idx;
txwi->rate = cpu_to_le16(rate_ctl);
txwi->pktid = (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) ? 1 : 0;
mt76x02_mac_fill_txwi(txwi, skb, sta, pkt_len, nss);
return txwi;
}
void mt76x0_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct mt76x0_dev *dev = hw->priv;
struct ieee80211_vif *vif = info->control.vif;
struct mt76_wcid *wcid = &dev->mt76.global_wcid;
if (control->sta) {
struct mt76x02_sta *msta;
msta = (struct mt76x02_sta *)control->sta->drv_priv;
wcid = &msta->wcid;
/* sw encrypted frames */
if (!info->control.hw_key && wcid->hw_key_idx != 0xff)
control->sta = NULL;
}
if (vif && !control->sta) {
struct mt76x02_vif *mvif;
mvif = (struct mt76x02_vif *)vif->drv_priv;
wcid = &mvif->group_wcid;
}
mt76_tx(&dev->mt76, control->sta, wcid, skb);
}
int mt76x0_tx_prepare_skb(struct mt76_dev *mdev, void *data,
struct sk_buff *skb, struct mt76_queue *q,
struct mt76_wcid *wcid, struct ieee80211_sta *sta,
u32 *tx_info)
{
struct mt76x0_dev *dev = container_of(mdev, struct mt76x0_dev, mt76);
struct mt76x02_txwi *txwi;
int len = skb->len;
mt76x02_insert_hdr_pad(skb);
txwi = mt76x0_push_txwi(dev, skb, sta, wcid, len);
return mt76x02u_set_txinfo(skb, wcid, q2ep(q->hw_idx));
}
EXPORT_SYMBOL_GPL(mt76x0_tx_prepare_skb);
void mt76x0_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
struct sk_buff *skb)
{
struct mt76x0_dev *dev = container_of(mdev, struct mt76x0_dev, mt76);
void *rxwi = skb->data;
skb_pull(skb, sizeof(struct mt76x02_rxwi));
if (!mt76x0_mac_process_rx(dev, skb, rxwi)) {
dev_kfree_skb(skb);
return;
}
mt76_rx(&dev->mt76, q, skb);
}
EXPORT_SYMBOL_GPL(mt76x0_queue_rx_skb);
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