2 * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 static void mt76x2u_remove_dma_hdr(struct sk_buff *skb)
24 skb_pull(skb, sizeof(struct mt76x2_txwi) + MT_DMA_HDR_LEN);
25 hdr_len = ieee80211_get_hdrlen_from_skb(skb);
27 memmove(skb->data + 2, skb->data, hdr_len);
33 mt76x2u_check_skb_rooms(struct sk_buff *skb)
35 int hdr_len = ieee80211_get_hdrlen_from_skb(skb);
38 need_head = sizeof(struct mt76x2_txwi) + MT_DMA_HDR_LEN;
41 return skb_cow(skb, need_head);
45 mt76x2u_set_txinfo(struct sk_buff *skb,
46 struct mt76_wcid *wcid, u8 ep)
48 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
49 enum mt76x2_qsel qsel;
52 if ((info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) ||
58 flags = FIELD_PREP(MT_TXD_INFO_QSEL, qsel) |
60 if (!wcid || wcid->hw_key_idx == 0xff || wcid->sw_iv)
61 flags |= MT_TXD_INFO_WIV;
63 return mt76u_skb_dma_info(skb, WLAN_PORT, flags);
66 bool mt76x2u_tx_status_data(struct mt76_dev *mdev, u8 *update)
68 struct mt76x2_dev *dev = container_of(mdev, struct mt76x2_dev, mt76);
69 struct mt76x2_tx_status stat;
71 if (!mt76x2_mac_load_tx_status(dev, &stat))
74 mt76x2_send_tx_status(dev, &stat, update);
79 int mt76x2u_tx_prepare_skb(struct mt76_dev *mdev, void *data,
80 struct sk_buff *skb, struct mt76_queue *q,
81 struct mt76_wcid *wcid, struct ieee80211_sta *sta,
84 struct mt76x2_dev *dev = container_of(mdev, struct mt76x2_dev, mt76);
85 struct mt76x2_txwi *txwi;
86 int err, len = skb->len;
88 err = mt76x2u_check_skb_rooms(skb);
92 mt76x2_insert_hdr_pad(skb);
94 txwi = skb_push(skb, sizeof(struct mt76x2_txwi));
95 mt76x2_mac_write_txwi(dev, txwi, skb, wcid, sta, len);
97 return mt76x2u_set_txinfo(skb, wcid, q2ep(q->hw_idx));
100 void mt76x2u_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue *q,
101 struct mt76_queue_entry *e, bool flush)
103 struct mt76x2_dev *dev = container_of(mdev, struct mt76x2_dev, mt76);
105 mt76x2u_remove_dma_hdr(e->skb);
106 mt76x2_tx_complete(dev, e->skb);