// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
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/* Copyright(c) 2018-2019 Realtek Corporation
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*/
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#include "main.h"
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#include "tx.h"
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#include "fw.h"
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#include "ps.h"
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#include "debug.h"
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static
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void rtw_tx_stats(struct rtw_dev *rtwdev, struct ieee80211_vif *vif,
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struct sk_buff *skb)
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{
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struct ieee80211_hdr *hdr;
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struct rtw_vif *rtwvif;
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hdr = (struct ieee80211_hdr *)skb->data;
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if (!ieee80211_is_data(hdr->frame_control))
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return;
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if (!is_broadcast_ether_addr(hdr->addr1) &&
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!is_multicast_ether_addr(hdr->addr1)) {
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rtwdev->stats.tx_unicast += skb->len;
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rtwdev->stats.tx_cnt++;
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if (vif) {
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rtwvif = (struct rtw_vif *)vif->drv_priv;
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rtwvif->stats.tx_unicast += skb->len;
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rtwvif->stats.tx_cnt++;
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}
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}
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}
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void rtw_tx_fill_tx_desc(struct rtw_tx_pkt_info *pkt_info, struct sk_buff *skb)
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{
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__le32 *txdesc = (__le32 *)skb->data;
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SET_TX_DESC_TXPKTSIZE(txdesc, pkt_info->tx_pkt_size);
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SET_TX_DESC_OFFSET(txdesc, pkt_info->offset);
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SET_TX_DESC_PKT_OFFSET(txdesc, pkt_info->pkt_offset);
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SET_TX_DESC_QSEL(txdesc, pkt_info->qsel);
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SET_TX_DESC_BMC(txdesc, pkt_info->bmc);
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SET_TX_DESC_RATE_ID(txdesc, pkt_info->rate_id);
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SET_TX_DESC_DATARATE(txdesc, pkt_info->rate);
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SET_TX_DESC_DISDATAFB(txdesc, pkt_info->dis_rate_fallback);
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SET_TX_DESC_USE_RATE(txdesc, pkt_info->use_rate);
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SET_TX_DESC_SEC_TYPE(txdesc, pkt_info->sec_type);
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SET_TX_DESC_DATA_BW(txdesc, pkt_info->bw);
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SET_TX_DESC_SW_SEQ(txdesc, pkt_info->seq);
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SET_TX_DESC_MAX_AGG_NUM(txdesc, pkt_info->ampdu_factor);
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SET_TX_DESC_AMPDU_DENSITY(txdesc, pkt_info->ampdu_density);
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SET_TX_DESC_DATA_STBC(txdesc, pkt_info->stbc);
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SET_TX_DESC_DATA_LDPC(txdesc, pkt_info->ldpc);
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SET_TX_DESC_AGG_EN(txdesc, pkt_info->ampdu_en);
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SET_TX_DESC_LS(txdesc, pkt_info->ls);
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SET_TX_DESC_DATA_SHORT(txdesc, pkt_info->short_gi);
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SET_TX_DESC_SPE_RPT(txdesc, pkt_info->report);
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SET_TX_DESC_SW_DEFINE(txdesc, pkt_info->sn);
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SET_TX_DESC_USE_RTS(txdesc, pkt_info->rts);
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SET_TX_DESC_DISQSELSEQ(txdesc, pkt_info->dis_qselseq);
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SET_TX_DESC_EN_HWSEQ(txdesc, pkt_info->en_hwseq);
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SET_TX_DESC_HW_SSN_SEL(txdesc, pkt_info->hw_ssn_sel);
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SET_TX_DESC_NAVUSEHDR(txdesc, pkt_info->nav_use_hdr);
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SET_TX_DESC_BT_NULL(txdesc, pkt_info->bt_null);
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}
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EXPORT_SYMBOL(rtw_tx_fill_tx_desc);
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static u8 get_tx_ampdu_factor(struct ieee80211_sta *sta)
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{
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u8 exp = sta->ht_cap.ampdu_factor;
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/* the least ampdu factor is 8K, and the value in the tx desc is the
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* max aggregation num, which represents val * 2 packets can be
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* aggregated in an AMPDU, so here we should use 8/2=4 as the base
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*/
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return (BIT(2) << exp) - 1;
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}
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static u8 get_tx_ampdu_density(struct ieee80211_sta *sta)
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{
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return sta->ht_cap.ampdu_density;
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}
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static u8 get_highest_ht_tx_rate(struct rtw_dev *rtwdev,
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struct ieee80211_sta *sta)
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{
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u8 rate;
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if (rtwdev->hal.rf_type == RF_2T2R && sta->ht_cap.mcs.rx_mask[1] != 0)
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rate = DESC_RATEMCS15;
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else
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rate = DESC_RATEMCS7;
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return rate;
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}
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static u8 get_highest_vht_tx_rate(struct rtw_dev *rtwdev,
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struct ieee80211_sta *sta)
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{
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struct rtw_efuse *efuse = &rtwdev->efuse;
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u8 rate;
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u16 tx_mcs_map;
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tx_mcs_map = le16_to_cpu(sta->vht_cap.vht_mcs.tx_mcs_map);
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if (efuse->hw_cap.nss == 1) {
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switch (tx_mcs_map & 0x3) {
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case IEEE80211_VHT_MCS_SUPPORT_0_7:
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rate = DESC_RATEVHT1SS_MCS7;
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break;
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case IEEE80211_VHT_MCS_SUPPORT_0_8:
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rate = DESC_RATEVHT1SS_MCS8;
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break;
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default:
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case IEEE80211_VHT_MCS_SUPPORT_0_9:
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rate = DESC_RATEVHT1SS_MCS9;
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break;
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}
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} else if (efuse->hw_cap.nss >= 2) {
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switch ((tx_mcs_map & 0xc) >> 2) {
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case IEEE80211_VHT_MCS_SUPPORT_0_7:
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rate = DESC_RATEVHT2SS_MCS7;
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break;
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case IEEE80211_VHT_MCS_SUPPORT_0_8:
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rate = DESC_RATEVHT2SS_MCS8;
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break;
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default:
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case IEEE80211_VHT_MCS_SUPPORT_0_9:
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rate = DESC_RATEVHT2SS_MCS9;
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break;
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}
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} else {
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rate = DESC_RATEVHT1SS_MCS9;
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}
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return rate;
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}
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static void rtw_tx_report_enable(struct rtw_dev *rtwdev,
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struct rtw_tx_pkt_info *pkt_info)
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{
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struct rtw_tx_report *tx_report = &rtwdev->tx_report;
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/* [11:8], reserved, fills with zero
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* [7:2], tx report sequence number
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* [1:0], firmware use, fills with zero
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*/
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pkt_info->sn = (atomic_inc_return(&tx_report->sn) << 2) & 0xfc;
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pkt_info->report = true;
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}
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void rtw_tx_report_purge_timer(struct timer_list *t)
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{
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struct rtw_dev *rtwdev = from_timer(rtwdev, t, tx_report.purge_timer);
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struct rtw_tx_report *tx_report = &rtwdev->tx_report;
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unsigned long flags;
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if (skb_queue_len(&tx_report->queue) == 0)
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return;
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WARN(1, "purge skb(s) not reported by firmware\n");
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spin_lock_irqsave(&tx_report->q_lock, flags);
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skb_queue_purge(&tx_report->queue);
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spin_unlock_irqrestore(&tx_report->q_lock, flags);
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}
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void rtw_tx_report_enqueue(struct rtw_dev *rtwdev, struct sk_buff *skb, u8 sn)
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{
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struct rtw_tx_report *tx_report = &rtwdev->tx_report;
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unsigned long flags;
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u8 *drv_data;
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/* pass sn to tx report handler through driver data */
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drv_data = (u8 *)IEEE80211_SKB_CB(skb)->status.status_driver_data;
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*drv_data = sn;
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spin_lock_irqsave(&tx_report->q_lock, flags);
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__skb_queue_tail(&tx_report->queue, skb);
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spin_unlock_irqrestore(&tx_report->q_lock, flags);
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mod_timer(&tx_report->purge_timer, jiffies + RTW_TX_PROBE_TIMEOUT);
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}
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EXPORT_SYMBOL(rtw_tx_report_enqueue);
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static void rtw_tx_report_tx_status(struct rtw_dev *rtwdev,
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struct sk_buff *skb, bool acked)
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{
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struct ieee80211_tx_info *info;
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info = IEEE80211_SKB_CB(skb);
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ieee80211_tx_info_clear_status(info);
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if (acked)
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info->flags |= IEEE80211_TX_STAT_ACK;
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else
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info->flags &= ~IEEE80211_TX_STAT_ACK;
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ieee80211_tx_status_irqsafe(rtwdev->hw, skb);
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}
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void rtw_tx_report_handle(struct rtw_dev *rtwdev, struct sk_buff *skb, int src)
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{
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struct rtw_tx_report *tx_report = &rtwdev->tx_report;
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struct rtw_c2h_cmd *c2h;
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struct sk_buff *cur, *tmp;
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unsigned long flags;
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u8 sn, st;
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u8 *n;
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c2h = get_c2h_from_skb(skb);
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if (src == C2H_CCX_TX_RPT) {
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sn = GET_CCX_REPORT_SEQNUM_V0(c2h->payload);
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st = GET_CCX_REPORT_STATUS_V0(c2h->payload);
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} else {
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sn = GET_CCX_REPORT_SEQNUM_V1(c2h->payload);
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st = GET_CCX_REPORT_STATUS_V1(c2h->payload);
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}
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spin_lock_irqsave(&tx_report->q_lock, flags);
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skb_queue_walk_safe(&tx_report->queue, cur, tmp) {
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n = (u8 *)IEEE80211_SKB_CB(cur)->status.status_driver_data;
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if (*n == sn) {
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__skb_unlink(cur, &tx_report->queue);
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rtw_tx_report_tx_status(rtwdev, cur, st == 0);
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break;
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}
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}
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spin_unlock_irqrestore(&tx_report->q_lock, flags);
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}
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static void rtw_tx_pkt_info_update_rate(struct rtw_dev *rtwdev,
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struct rtw_tx_pkt_info *pkt_info,
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struct sk_buff *skb)
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{
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if (rtwdev->hal.current_band_type == RTW_BAND_2G) {
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pkt_info->rate_id = RTW_RATEID_B_20M;
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pkt_info->rate = DESC_RATE1M;
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} else {
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pkt_info->rate_id = RTW_RATEID_G;
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pkt_info->rate = DESC_RATE6M;
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}
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pkt_info->use_rate = true;
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pkt_info->dis_rate_fallback = true;
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}
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static void rtw_tx_pkt_info_update_sec(struct rtw_dev *rtwdev,
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struct rtw_tx_pkt_info *pkt_info,
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struct sk_buff *skb)
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{
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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u8 sec_type = 0;
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if (info && info->control.hw_key) {
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struct ieee80211_key_conf *key = info->control.hw_key;
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switch (key->cipher) {
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case WLAN_CIPHER_SUITE_WEP40:
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case WLAN_CIPHER_SUITE_WEP104:
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case WLAN_CIPHER_SUITE_TKIP:
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sec_type = 0x01;
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break;
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case WLAN_CIPHER_SUITE_CCMP:
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sec_type = 0x03;
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break;
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default:
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break;
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}
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}
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pkt_info->sec_type = sec_type;
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}
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static void rtw_tx_mgmt_pkt_info_update(struct rtw_dev *rtwdev,
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struct rtw_tx_pkt_info *pkt_info,
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struct ieee80211_sta *sta,
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struct sk_buff *skb)
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{
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rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb);
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pkt_info->dis_qselseq = true;
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pkt_info->en_hwseq = true;
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pkt_info->hw_ssn_sel = 0;
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/* TODO: need to change hw port and hw ssn sel for multiple vifs */
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}
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static void rtw_tx_data_pkt_info_update(struct rtw_dev *rtwdev,
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struct rtw_tx_pkt_info *pkt_info,
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struct ieee80211_sta *sta,
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struct sk_buff *skb)
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{
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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struct rtw_sta_info *si;
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u16 seq;
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u8 ampdu_factor = 0;
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u8 ampdu_density = 0;
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bool ampdu_en = false;
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u8 rate = DESC_RATE6M;
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u8 rate_id = 6;
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u8 bw = RTW_CHANNEL_WIDTH_20;
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bool stbc = false;
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bool ldpc = false;
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seq = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
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/* for broadcast/multicast, use default values */
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if (!sta)
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goto out;
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if (info->flags & IEEE80211_TX_CTL_AMPDU) {
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ampdu_en = true;
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ampdu_factor = get_tx_ampdu_factor(sta);
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ampdu_density = get_tx_ampdu_density(sta);
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}
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if (info->control.use_rts)
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pkt_info->rts = true;
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if (sta->vht_cap.vht_supported)
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rate = get_highest_vht_tx_rate(rtwdev, sta);
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else if (sta->ht_cap.ht_supported)
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rate = get_highest_ht_tx_rate(rtwdev, sta);
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else if (sta->supp_rates[0] <= 0xf)
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rate = DESC_RATE11M;
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else
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rate = DESC_RATE54M;
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|
si = (struct rtw_sta_info *)sta->drv_priv;
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bw = si->bw_mode;
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rate_id = si->rate_id;
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stbc = si->stbc_en;
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ldpc = si->ldpc_en;
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|
out:
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pkt_info->seq = seq;
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pkt_info->ampdu_factor = ampdu_factor;
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pkt_info->ampdu_density = ampdu_density;
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pkt_info->ampdu_en = ampdu_en;
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pkt_info->rate = rate;
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pkt_info->rate_id = rate_id;
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pkt_info->bw = bw;
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pkt_info->stbc = stbc;
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pkt_info->ldpc = ldpc;
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}
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|
void rtw_tx_pkt_info_update(struct rtw_dev *rtwdev,
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struct rtw_tx_pkt_info *pkt_info,
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struct ieee80211_sta *sta,
|
struct sk_buff *skb)
|
{
|
struct rtw_chip_info *chip = rtwdev->chip;
|
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
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struct rtw_sta_info *si;
|
struct ieee80211_vif *vif = NULL;
|
__le16 fc = hdr->frame_control;
|
bool bmc;
|
|
if (sta) {
|
si = (struct rtw_sta_info *)sta->drv_priv;
|
vif = si->vif;
|
}
|
|
if (ieee80211_is_mgmt(fc) || ieee80211_is_nullfunc(fc))
|
rtw_tx_mgmt_pkt_info_update(rtwdev, pkt_info, sta, skb);
|
else if (ieee80211_is_data(fc))
|
rtw_tx_data_pkt_info_update(rtwdev, pkt_info, sta, skb);
|
|
bmc = is_broadcast_ether_addr(hdr->addr1) ||
|
is_multicast_ether_addr(hdr->addr1);
|
|
if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
|
rtw_tx_report_enable(rtwdev, pkt_info);
|
|
pkt_info->bmc = bmc;
|
rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb);
|
pkt_info->tx_pkt_size = skb->len;
|
pkt_info->offset = chip->tx_pkt_desc_sz;
|
pkt_info->qsel = skb->priority;
|
pkt_info->ls = true;
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|
/* maybe merge with tx status ? */
|
rtw_tx_stats(rtwdev, vif, skb);
|
}
|
|
void rtw_tx_rsvd_page_pkt_info_update(struct rtw_dev *rtwdev,
|
struct rtw_tx_pkt_info *pkt_info,
|
struct sk_buff *skb,
|
enum rtw_rsvd_packet_type type)
|
{
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struct rtw_chip_info *chip = rtwdev->chip;
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
|
bool bmc;
|
|
/* A beacon or dummy reserved page packet indicates that it is the first
|
* reserved page, and the qsel of it will be set in each hci.
|
*/
|
if (type != RSVD_BEACON && type != RSVD_DUMMY)
|
pkt_info->qsel = TX_DESC_QSEL_MGMT;
|
|
rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb);
|
|
bmc = is_broadcast_ether_addr(hdr->addr1) ||
|
is_multicast_ether_addr(hdr->addr1);
|
pkt_info->bmc = bmc;
|
pkt_info->tx_pkt_size = skb->len;
|
pkt_info->offset = chip->tx_pkt_desc_sz;
|
pkt_info->ls = true;
|
if (type == RSVD_PS_POLL) {
|
pkt_info->nav_use_hdr = true;
|
} else {
|
pkt_info->dis_qselseq = true;
|
pkt_info->en_hwseq = true;
|
pkt_info->hw_ssn_sel = 0;
|
}
|
if (type == RSVD_QOS_NULL)
|
pkt_info->bt_null = true;
|
|
rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb);
|
|
/* TODO: need to change hw port and hw ssn sel for multiple vifs */
|
}
|
|
struct sk_buff *
|
rtw_tx_write_data_rsvd_page_get(struct rtw_dev *rtwdev,
|
struct rtw_tx_pkt_info *pkt_info,
|
u8 *buf, u32 size)
|
{
|
struct rtw_chip_info *chip = rtwdev->chip;
|
struct sk_buff *skb;
|
u32 tx_pkt_desc_sz;
|
u32 length;
|
|
tx_pkt_desc_sz = chip->tx_pkt_desc_sz;
|
length = size + tx_pkt_desc_sz;
|
skb = dev_alloc_skb(length);
|
if (!skb) {
|
rtw_err(rtwdev, "failed to alloc write data rsvd page skb\n");
|
return NULL;
|
}
|
|
skb_reserve(skb, tx_pkt_desc_sz);
|
skb_put_data(skb, buf, size);
|
rtw_tx_rsvd_page_pkt_info_update(rtwdev, pkt_info, skb, RSVD_BEACON);
|
|
return skb;
|
}
|
EXPORT_SYMBOL(rtw_tx_write_data_rsvd_page_get);
|
|
struct sk_buff *
|
rtw_tx_write_data_h2c_get(struct rtw_dev *rtwdev,
|
struct rtw_tx_pkt_info *pkt_info,
|
u8 *buf, u32 size)
|
{
|
struct rtw_chip_info *chip = rtwdev->chip;
|
struct sk_buff *skb;
|
u32 tx_pkt_desc_sz;
|
u32 length;
|
|
tx_pkt_desc_sz = chip->tx_pkt_desc_sz;
|
length = size + tx_pkt_desc_sz;
|
skb = dev_alloc_skb(length);
|
if (!skb) {
|
rtw_err(rtwdev, "failed to alloc write data h2c skb\n");
|
return NULL;
|
}
|
|
skb_reserve(skb, tx_pkt_desc_sz);
|
skb_put_data(skb, buf, size);
|
pkt_info->tx_pkt_size = size;
|
|
return skb;
|
}
|
EXPORT_SYMBOL(rtw_tx_write_data_h2c_get);
|
|
void rtw_tx(struct rtw_dev *rtwdev,
|
struct ieee80211_tx_control *control,
|
struct sk_buff *skb)
|
{
|
struct rtw_tx_pkt_info pkt_info = {0};
|
int ret;
|
|
rtw_tx_pkt_info_update(rtwdev, &pkt_info, control->sta, skb);
|
ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb);
|
if (ret) {
|
rtw_err(rtwdev, "failed to write TX skb to HCI\n");
|
goto out;
|
}
|
|
rtw_hci_tx_kick_off(rtwdev);
|
|
return;
|
|
out:
|
ieee80211_free_txskb(rtwdev->hw, skb);
|
}
|
|
static void rtw_txq_check_agg(struct rtw_dev *rtwdev,
|
struct rtw_txq *rtwtxq,
|
struct sk_buff *skb)
|
{
|
struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq);
|
struct ieee80211_tx_info *info;
|
struct rtw_sta_info *si;
|
|
if (test_bit(RTW_TXQ_AMPDU, &rtwtxq->flags)) {
|
info = IEEE80211_SKB_CB(skb);
|
info->flags |= IEEE80211_TX_CTL_AMPDU;
|
return;
|
}
|
|
if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO)
|
return;
|
|
if (test_bit(RTW_TXQ_BLOCK_BA, &rtwtxq->flags))
|
return;
|
|
if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE)))
|
return;
|
|
if (!txq->sta)
|
return;
|
|
si = (struct rtw_sta_info *)txq->sta->drv_priv;
|
set_bit(txq->tid, si->tid_ba);
|
|
ieee80211_queue_work(rtwdev->hw, &rtwdev->ba_work);
|
}
|
|
static int rtw_txq_push_skb(struct rtw_dev *rtwdev,
|
struct rtw_txq *rtwtxq,
|
struct sk_buff *skb)
|
{
|
struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq);
|
struct rtw_tx_pkt_info pkt_info = {0};
|
int ret;
|
|
rtw_txq_check_agg(rtwdev, rtwtxq, skb);
|
|
rtw_tx_pkt_info_update(rtwdev, &pkt_info, txq->sta, skb);
|
ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb);
|
if (ret) {
|
rtw_err(rtwdev, "failed to write TX skb to HCI\n");
|
return ret;
|
}
|
rtwtxq->last_push = jiffies;
|
|
return 0;
|
}
|
|
static struct sk_buff *rtw_txq_dequeue(struct rtw_dev *rtwdev,
|
struct rtw_txq *rtwtxq)
|
{
|
struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq);
|
struct sk_buff *skb;
|
|
skb = ieee80211_tx_dequeue(rtwdev->hw, txq);
|
if (!skb)
|
return NULL;
|
|
return skb;
|
}
|
|
static void rtw_txq_push(struct rtw_dev *rtwdev,
|
struct rtw_txq *rtwtxq,
|
unsigned long frames)
|
{
|
struct sk_buff *skb;
|
int ret;
|
int i;
|
|
rcu_read_lock();
|
|
for (i = 0; i < frames; i++) {
|
skb = rtw_txq_dequeue(rtwdev, rtwtxq);
|
if (!skb)
|
break;
|
|
ret = rtw_txq_push_skb(rtwdev, rtwtxq, skb);
|
if (ret) {
|
rtw_err(rtwdev, "failed to pusk skb, ret %d\n", ret);
|
break;
|
}
|
}
|
|
rcu_read_unlock();
|
}
|
|
void rtw_tx_tasklet(struct tasklet_struct *t)
|
{
|
struct rtw_dev *rtwdev = from_tasklet(rtwdev, t, tx_tasklet);
|
struct rtw_txq *rtwtxq, *tmp;
|
|
spin_lock_bh(&rtwdev->txq_lock);
|
|
list_for_each_entry_safe(rtwtxq, tmp, &rtwdev->txqs, list) {
|
struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq);
|
unsigned long frame_cnt;
|
unsigned long byte_cnt;
|
|
ieee80211_txq_get_depth(txq, &frame_cnt, &byte_cnt);
|
rtw_txq_push(rtwdev, rtwtxq, frame_cnt);
|
|
list_del_init(&rtwtxq->list);
|
}
|
|
rtw_hci_tx_kick_off(rtwdev);
|
|
spin_unlock_bh(&rtwdev->txq_lock);
|
}
|
|
void rtw_txq_init(struct rtw_dev *rtwdev, struct ieee80211_txq *txq)
|
{
|
struct rtw_txq *rtwtxq;
|
|
if (!txq)
|
return;
|
|
rtwtxq = (struct rtw_txq *)txq->drv_priv;
|
INIT_LIST_HEAD(&rtwtxq->list);
|
}
|
|
void rtw_txq_cleanup(struct rtw_dev *rtwdev, struct ieee80211_txq *txq)
|
{
|
struct rtw_txq *rtwtxq;
|
|
if (!txq)
|
return;
|
|
rtwtxq = (struct rtw_txq *)txq->drv_priv;
|
spin_lock_bh(&rtwdev->txq_lock);
|
if (!list_empty(&rtwtxq->list))
|
list_del_init(&rtwtxq->list);
|
spin_unlock_bh(&rtwdev->txq_lock);
|
}
|
