2 * Copyright (c) 2005-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 static void ath10k_report_offchan_tx(struct ath10k *ar, struct sk_buff *skb)
26 if (!ATH10K_SKB_CB(skb)->htt.is_offchan)
29 /* If the original wait_for_completion() timed out before
30 * {data,mgmt}_tx_completed() was called then we could complete
31 * offchan_tx_completed for a different skb. Prevent this by using
33 spin_lock_bh(&ar->data_lock);
34 if (ar->offchan_tx_skb != skb) {
35 ath10k_warn("completed old offchannel frame\n");
39 complete(&ar->offchan_tx_completed);
40 ar->offchan_tx_skb = NULL; /* just for sanity */
42 ath10k_dbg(ATH10K_DBG_HTT, "completed offchannel skb %p\n", skb);
44 spin_unlock_bh(&ar->data_lock);
47 void ath10k_txrx_tx_unref(struct ath10k_htt *htt, struct sk_buff *txdesc)
49 struct device *dev = htt->ar->dev;
50 struct ieee80211_tx_info *info;
51 struct sk_buff *txfrag = ATH10K_SKB_CB(txdesc)->htt.txfrag;
52 struct sk_buff *msdu = ATH10K_SKB_CB(txdesc)->htt.msdu;
55 if (ATH10K_SKB_CB(txdesc)->htt.refcount == 0)
58 ATH10K_SKB_CB(txdesc)->htt.refcount--;
60 if (ATH10K_SKB_CB(txdesc)->htt.refcount > 0)
64 ret = ath10k_skb_unmap(dev, txfrag);
66 ath10k_warn("txfrag unmap failed (%d)\n", ret);
68 dev_kfree_skb_any(txfrag);
71 ret = ath10k_skb_unmap(dev, msdu);
73 ath10k_warn("data skb unmap failed (%d)\n", ret);
75 ath10k_report_offchan_tx(htt->ar, msdu);
77 info = IEEE80211_SKB_CB(msdu);
79 if (ATH10K_SKB_CB(txdesc)->htt.discard) {
80 ieee80211_free_txskb(htt->ar->hw, msdu);
84 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
85 info->flags |= IEEE80211_TX_STAT_ACK;
87 if (ATH10K_SKB_CB(txdesc)->htt.no_ack)
88 info->flags &= ~IEEE80211_TX_STAT_ACK;
90 ieee80211_tx_status(htt->ar->hw, msdu);
91 /* we do not own the msdu anymore */
94 spin_lock_bh(&htt->tx_lock);
95 htt->pending_tx[ATH10K_SKB_CB(txdesc)->htt.msdu_id] = NULL;
96 ath10k_htt_tx_free_msdu_id(htt, ATH10K_SKB_CB(txdesc)->htt.msdu_id);
97 __ath10k_htt_tx_dec_pending(htt);
98 if (htt->num_pending_tx == 0)
99 wake_up(&htt->empty_tx_wq);
100 spin_unlock_bh(&htt->tx_lock);
102 dev_kfree_skb_any(txdesc);
105 void ath10k_txrx_tx_completed(struct ath10k_htt *htt,
106 const struct htt_tx_done *tx_done)
108 struct sk_buff *txdesc;
110 ath10k_dbg(ATH10K_DBG_HTT, "htt tx completion msdu_id %u discard %d no_ack %d\n",
111 tx_done->msdu_id, !!tx_done->discard, !!tx_done->no_ack);
113 if (tx_done->msdu_id >= htt->max_num_pending_tx) {
114 ath10k_warn("warning: msdu_id %d too big, ignoring\n",
119 txdesc = htt->pending_tx[tx_done->msdu_id];
121 ATH10K_SKB_CB(txdesc)->htt.discard = tx_done->discard;
122 ATH10K_SKB_CB(txdesc)->htt.no_ack = tx_done->no_ack;
124 ath10k_txrx_tx_unref(htt, txdesc);
127 static const u8 rx_legacy_rate_idx[] = {
128 3, /* 0x00 - 11Mbps */
129 2, /* 0x01 - 5.5Mbps */
130 1, /* 0x02 - 2Mbps */
131 0, /* 0x03 - 1Mbps */
132 3, /* 0x04 - 11Mbps */
133 2, /* 0x05 - 5.5Mbps */
134 1, /* 0x06 - 2Mbps */
135 0, /* 0x07 - 1Mbps */
136 10, /* 0x08 - 48Mbps */
137 8, /* 0x09 - 24Mbps */
138 6, /* 0x0A - 12Mbps */
139 4, /* 0x0B - 6Mbps */
140 11, /* 0x0C - 54Mbps */
141 9, /* 0x0D - 36Mbps */
142 7, /* 0x0E - 18Mbps */
143 5, /* 0x0F - 9Mbps */
146 static void process_rx_rates(struct ath10k *ar, struct htt_rx_info *info,
147 enum ieee80211_band band,
148 struct ieee80211_rx_status *status)
150 u8 cck, rate, rate_idx, bw, sgi, mcs, nss;
151 u8 info0 = info->rate.info0;
152 u32 info1 = info->rate.info1;
153 u32 info2 = info->rate.info2;
156 /* Check if valid fields */
157 if (!(info0 & HTT_RX_INDICATION_INFO0_START_VALID))
160 preamble = MS(info1, HTT_RX_INDICATION_INFO1_PREAMBLE_TYPE);
164 cck = info0 & HTT_RX_INDICATION_INFO0_LEGACY_RATE_CCK;
165 rate = MS(info0, HTT_RX_INDICATION_INFO0_LEGACY_RATE);
168 if (rate < 0x08 || rate > 0x0F)
172 case IEEE80211_BAND_2GHZ:
175 rate_idx = rx_legacy_rate_idx[rate];
177 case IEEE80211_BAND_5GHZ:
178 rate_idx = rx_legacy_rate_idx[rate];
179 /* We are using same rate table registering
180 HW - ath10k_rates[]. In case of 5GHz skip
181 CCK rates, so -4 here */
188 status->rate_idx = rate_idx;
191 case HTT_RX_HT_WITH_TXBF:
192 /* HT-SIG - Table 20-11 in info1 and info2 */
195 bw = (info1 >> 7) & 1;
196 sgi = (info2 >> 7) & 1;
198 status->rate_idx = mcs;
199 status->flag |= RX_FLAG_HT;
201 status->flag |= RX_FLAG_SHORT_GI;
203 status->flag |= RX_FLAG_40MHZ;
206 case HTT_RX_VHT_WITH_TXBF:
207 /* VHT-SIG-A1 in info 1, VHT-SIG-A2 in info2
209 mcs = (info2 >> 4) & 0x0F;
210 nss = (info1 >> 10) & 0x07;
214 status->rate_idx = mcs;
215 status->vht_nss = nss;
218 status->flag |= RX_FLAG_SHORT_GI;
226 status->flag |= RX_FLAG_40MHZ;
230 status->flag |= RX_FLAG_80MHZ;
233 status->flag |= RX_FLAG_VHT;
240 void ath10k_process_rx(struct ath10k *ar, struct htt_rx_info *info)
242 struct ieee80211_rx_status *status;
243 struct ieee80211_channel *ch;
244 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)info->skb->data;
246 status = IEEE80211_SKB_RXCB(info->skb);
247 memset(status, 0, sizeof(*status));
249 if (info->encrypt_type != HTT_RX_MPDU_ENCRYPT_NONE) {
250 status->flag |= RX_FLAG_DECRYPTED | RX_FLAG_IV_STRIPPED |
251 RX_FLAG_MMIC_STRIPPED;
252 hdr->frame_control = __cpu_to_le16(
253 __le16_to_cpu(hdr->frame_control) &
254 ~IEEE80211_FCTL_PROTECTED);
257 if (info->status == HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR)
258 status->flag |= RX_FLAG_MMIC_ERROR;
261 status->flag |= RX_FLAG_FAILED_FCS_CRC;
263 status->signal = info->signal;
265 spin_lock_bh(&ar->data_lock);
266 ch = ar->scan_channel;
269 spin_unlock_bh(&ar->data_lock);
272 ath10k_warn("no channel configured; ignoring frame!\n");
273 dev_kfree_skb_any(info->skb);
277 process_rx_rates(ar, info, ch->band, status);
278 status->band = ch->band;
279 status->freq = ch->center_freq;
281 ath10k_dbg(ATH10K_DBG_DATA,
282 "rx skb %p len %u %s%s%s%s%s %srate_idx %u vht_nss %u freq %u band %u\n",
285 status->flag == 0 ? "legacy" : "",
286 status->flag & RX_FLAG_HT ? "ht" : "",
287 status->flag & RX_FLAG_VHT ? "vht" : "",
288 status->flag & RX_FLAG_40MHZ ? "40" : "",
289 status->flag & RX_FLAG_80MHZ ? "80" : "",
290 status->flag & RX_FLAG_SHORT_GI ? "sgi " : "",
296 ieee80211_rx(ar->hw, info->skb);
299 struct ath10k_peer *ath10k_peer_find(struct ath10k *ar, int vdev_id,
302 struct ath10k_peer *peer;
304 lockdep_assert_held(&ar->data_lock);
306 list_for_each_entry(peer, &ar->peers, list) {
307 if (peer->vdev_id != vdev_id)
309 if (memcmp(peer->addr, addr, ETH_ALEN))
318 static struct ath10k_peer *ath10k_peer_find_by_id(struct ath10k *ar,
321 struct ath10k_peer *peer;
323 lockdep_assert_held(&ar->data_lock);
325 list_for_each_entry(peer, &ar->peers, list)
326 if (test_bit(peer_id, peer->peer_ids))
332 static int ath10k_wait_for_peer_common(struct ath10k *ar, int vdev_id,
333 const u8 *addr, bool expect_mapped)
337 ret = wait_event_timeout(ar->peer_mapping_wq, ({
340 spin_lock_bh(&ar->data_lock);
341 mapped = !!ath10k_peer_find(ar, vdev_id, addr);
342 spin_unlock_bh(&ar->data_lock);
344 mapped == expect_mapped;
353 int ath10k_wait_for_peer_created(struct ath10k *ar, int vdev_id, const u8 *addr)
355 return ath10k_wait_for_peer_common(ar, vdev_id, addr, true);
358 int ath10k_wait_for_peer_deleted(struct ath10k *ar, int vdev_id, const u8 *addr)
360 return ath10k_wait_for_peer_common(ar, vdev_id, addr, false);
363 void ath10k_peer_map_event(struct ath10k_htt *htt,
364 struct htt_peer_map_event *ev)
366 struct ath10k *ar = htt->ar;
367 struct ath10k_peer *peer;
369 spin_lock_bh(&ar->data_lock);
370 peer = ath10k_peer_find(ar, ev->vdev_id, ev->addr);
372 peer = kzalloc(sizeof(*peer), GFP_ATOMIC);
376 peer->vdev_id = ev->vdev_id;
377 memcpy(peer->addr, ev->addr, ETH_ALEN);
378 list_add(&peer->list, &ar->peers);
379 wake_up(&ar->peer_mapping_wq);
382 ath10k_dbg(ATH10K_DBG_HTT, "htt peer map vdev %d peer %pM id %d\n",
383 ev->vdev_id, ev->addr, ev->peer_id);
385 set_bit(ev->peer_id, peer->peer_ids);
387 spin_unlock_bh(&ar->data_lock);
390 void ath10k_peer_unmap_event(struct ath10k_htt *htt,
391 struct htt_peer_unmap_event *ev)
393 struct ath10k *ar = htt->ar;
394 struct ath10k_peer *peer;
396 spin_lock_bh(&ar->data_lock);
397 peer = ath10k_peer_find_by_id(ar, ev->peer_id);
399 ath10k_warn("unknown peer id %d\n", ev->peer_id);
403 ath10k_dbg(ATH10K_DBG_HTT, "htt peer unmap vdev %d peer %pM id %d\n",
404 peer->vdev_id, peer->addr, ev->peer_id);
406 clear_bit(ev->peer_id, peer->peer_ids);
408 if (bitmap_empty(peer->peer_ids, ATH10K_MAX_NUM_PEER_IDS)) {
409 list_del(&peer->list);
411 wake_up(&ar->peer_mapping_wq);
415 spin_unlock_bh(&ar->data_lock);