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,
48 const struct htt_tx_done *tx_done)
50 struct device *dev = htt->ar->dev;
51 struct ieee80211_tx_info *info;
52 struct ath10k_skb_cb *skb_cb;
56 ath10k_dbg(ATH10K_DBG_HTT, "htt tx completion msdu_id %u discard %d no_ack %d\n",
57 tx_done->msdu_id, !!tx_done->discard, !!tx_done->no_ack);
59 if (tx_done->msdu_id >= htt->max_num_pending_tx) {
60 ath10k_warn("warning: msdu_id %d too big, ignoring\n",
65 msdu = htt->pending_tx[tx_done->msdu_id];
66 skb_cb = ATH10K_SKB_CB(msdu);
68 ret = ath10k_skb_unmap(dev, msdu);
70 ath10k_warn("data skb unmap failed (%d)\n", ret);
72 if (skb_cb->htt.frag_len)
73 skb_pull(msdu, skb_cb->htt.frag_len + skb_cb->htt.pad_len);
75 ath10k_report_offchan_tx(htt->ar, msdu);
77 info = IEEE80211_SKB_CB(msdu);
79 if (tx_done->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;
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[tx_done->msdu_id] = NULL;
96 ath10k_htt_tx_free_msdu_id(htt, tx_done->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);
103 static const u8 rx_legacy_rate_idx[] = {
104 3, /* 0x00 - 11Mbps */
105 2, /* 0x01 - 5.5Mbps */
106 1, /* 0x02 - 2Mbps */
107 0, /* 0x03 - 1Mbps */
108 3, /* 0x04 - 11Mbps */
109 2, /* 0x05 - 5.5Mbps */
110 1, /* 0x06 - 2Mbps */
111 0, /* 0x07 - 1Mbps */
112 10, /* 0x08 - 48Mbps */
113 8, /* 0x09 - 24Mbps */
114 6, /* 0x0A - 12Mbps */
115 4, /* 0x0B - 6Mbps */
116 11, /* 0x0C - 54Mbps */
117 9, /* 0x0D - 36Mbps */
118 7, /* 0x0E - 18Mbps */
119 5, /* 0x0F - 9Mbps */
122 static void process_rx_rates(struct ath10k *ar, struct htt_rx_info *info,
123 enum ieee80211_band band,
124 struct ieee80211_rx_status *status)
126 u8 cck, rate, rate_idx, bw, sgi, mcs, nss;
127 u8 info0 = info->rate.info0;
128 u32 info1 = info->rate.info1;
129 u32 info2 = info->rate.info2;
132 /* Check if valid fields */
133 if (!(info0 & HTT_RX_INDICATION_INFO0_START_VALID))
136 preamble = MS(info1, HTT_RX_INDICATION_INFO1_PREAMBLE_TYPE);
140 cck = info0 & HTT_RX_INDICATION_INFO0_LEGACY_RATE_CCK;
141 rate = MS(info0, HTT_RX_INDICATION_INFO0_LEGACY_RATE);
144 if (rate < 0x08 || rate > 0x0F)
148 case IEEE80211_BAND_2GHZ:
151 rate_idx = rx_legacy_rate_idx[rate];
153 case IEEE80211_BAND_5GHZ:
154 rate_idx = rx_legacy_rate_idx[rate];
155 /* We are using same rate table registering
156 HW - ath10k_rates[]. In case of 5GHz skip
157 CCK rates, so -4 here */
164 status->rate_idx = rate_idx;
167 case HTT_RX_HT_WITH_TXBF:
168 /* HT-SIG - Table 20-11 in info1 and info2 */
171 bw = (info1 >> 7) & 1;
172 sgi = (info2 >> 7) & 1;
174 status->rate_idx = mcs;
175 status->flag |= RX_FLAG_HT;
177 status->flag |= RX_FLAG_SHORT_GI;
179 status->flag |= RX_FLAG_40MHZ;
182 case HTT_RX_VHT_WITH_TXBF:
183 /* VHT-SIG-A1 in info 1, VHT-SIG-A2 in info2
185 mcs = (info2 >> 4) & 0x0F;
186 nss = (info1 >> 10) & 0x07;
190 status->rate_idx = mcs;
191 status->vht_nss = nss;
194 status->flag |= RX_FLAG_SHORT_GI;
202 status->flag |= RX_FLAG_40MHZ;
206 status->flag |= RX_FLAG_80MHZ;
209 status->flag |= RX_FLAG_VHT;
216 void ath10k_process_rx(struct ath10k *ar, struct htt_rx_info *info)
218 struct ieee80211_rx_status *status;
219 struct ieee80211_channel *ch;
220 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)info->skb->data;
222 status = IEEE80211_SKB_RXCB(info->skb);
223 memset(status, 0, sizeof(*status));
225 if (info->encrypt_type != HTT_RX_MPDU_ENCRYPT_NONE) {
226 status->flag |= RX_FLAG_DECRYPTED | RX_FLAG_IV_STRIPPED |
227 RX_FLAG_MMIC_STRIPPED;
228 hdr->frame_control = __cpu_to_le16(
229 __le16_to_cpu(hdr->frame_control) &
230 ~IEEE80211_FCTL_PROTECTED);
233 if (info->status == HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR)
234 status->flag |= RX_FLAG_MMIC_ERROR;
237 status->flag |= RX_FLAG_FAILED_FCS_CRC;
239 status->signal = info->signal;
241 spin_lock_bh(&ar->data_lock);
242 ch = ar->scan_channel;
245 spin_unlock_bh(&ar->data_lock);
248 ath10k_warn("no channel configured; ignoring frame!\n");
249 dev_kfree_skb_any(info->skb);
253 process_rx_rates(ar, info, ch->band, status);
254 status->band = ch->band;
255 status->freq = ch->center_freq;
257 ath10k_dbg(ATH10K_DBG_DATA,
258 "rx skb %p len %u %s%s%s%s%s %srate_idx %u vht_nss %u freq %u band %u\n",
261 status->flag == 0 ? "legacy" : "",
262 status->flag & RX_FLAG_HT ? "ht" : "",
263 status->flag & RX_FLAG_VHT ? "vht" : "",
264 status->flag & RX_FLAG_40MHZ ? "40" : "",
265 status->flag & RX_FLAG_80MHZ ? "80" : "",
266 status->flag & RX_FLAG_SHORT_GI ? "sgi " : "",
272 ieee80211_rx(ar->hw, info->skb);
275 struct ath10k_peer *ath10k_peer_find(struct ath10k *ar, int vdev_id,
278 struct ath10k_peer *peer;
280 lockdep_assert_held(&ar->data_lock);
282 list_for_each_entry(peer, &ar->peers, list) {
283 if (peer->vdev_id != vdev_id)
285 if (memcmp(peer->addr, addr, ETH_ALEN))
294 static struct ath10k_peer *ath10k_peer_find_by_id(struct ath10k *ar,
297 struct ath10k_peer *peer;
299 lockdep_assert_held(&ar->data_lock);
301 list_for_each_entry(peer, &ar->peers, list)
302 if (test_bit(peer_id, peer->peer_ids))
308 static int ath10k_wait_for_peer_common(struct ath10k *ar, int vdev_id,
309 const u8 *addr, bool expect_mapped)
313 ret = wait_event_timeout(ar->peer_mapping_wq, ({
316 spin_lock_bh(&ar->data_lock);
317 mapped = !!ath10k_peer_find(ar, vdev_id, addr);
318 spin_unlock_bh(&ar->data_lock);
320 mapped == expect_mapped;
329 int ath10k_wait_for_peer_created(struct ath10k *ar, int vdev_id, const u8 *addr)
331 return ath10k_wait_for_peer_common(ar, vdev_id, addr, true);
334 int ath10k_wait_for_peer_deleted(struct ath10k *ar, int vdev_id, const u8 *addr)
336 return ath10k_wait_for_peer_common(ar, vdev_id, addr, false);
339 void ath10k_peer_map_event(struct ath10k_htt *htt,
340 struct htt_peer_map_event *ev)
342 struct ath10k *ar = htt->ar;
343 struct ath10k_peer *peer;
345 spin_lock_bh(&ar->data_lock);
346 peer = ath10k_peer_find(ar, ev->vdev_id, ev->addr);
348 peer = kzalloc(sizeof(*peer), GFP_ATOMIC);
352 peer->vdev_id = ev->vdev_id;
353 memcpy(peer->addr, ev->addr, ETH_ALEN);
354 list_add(&peer->list, &ar->peers);
355 wake_up(&ar->peer_mapping_wq);
358 ath10k_dbg(ATH10K_DBG_HTT, "htt peer map vdev %d peer %pM id %d\n",
359 ev->vdev_id, ev->addr, ev->peer_id);
361 set_bit(ev->peer_id, peer->peer_ids);
363 spin_unlock_bh(&ar->data_lock);
366 void ath10k_peer_unmap_event(struct ath10k_htt *htt,
367 struct htt_peer_unmap_event *ev)
369 struct ath10k *ar = htt->ar;
370 struct ath10k_peer *peer;
372 spin_lock_bh(&ar->data_lock);
373 peer = ath10k_peer_find_by_id(ar, ev->peer_id);
375 ath10k_warn("unknown peer id %d\n", ev->peer_id);
379 ath10k_dbg(ATH10K_DBG_HTT, "htt peer unmap vdev %d peer %pM id %d\n",
380 peer->vdev_id, peer->addr, ev->peer_id);
382 clear_bit(ev->peer_id, peer->peer_ids);
384 if (bitmap_empty(peer->peer_ids, ATH10K_MAX_NUM_PEER_IDS)) {
385 list_del(&peer->list);
387 wake_up(&ar->peer_mapping_wq);
391 spin_unlock_bh(&ar->data_lock);