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(ar, "completed old offchannel frame\n");
39 complete(&ar->offchan_tx_completed);
40 ar->offchan_tx_skb = NULL; /* just for sanity */
42 ath10k_dbg(ar, 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 ath10k *ar = htt->ar;
51 struct device *dev = ar->dev;
52 struct ieee80211_tx_info *info;
53 struct ath10k_skb_cb *skb_cb;
55 struct ieee80211_hdr *hdr;
57 bool limit_mgmt_desc = false;
59 ath10k_dbg(ar, ATH10K_DBG_HTT,
60 "htt tx completion msdu_id %u discard %d no_ack %d success %d\n",
61 tx_done->msdu_id, !!tx_done->discard,
62 !!tx_done->no_ack, !!tx_done->success);
64 if (tx_done->msdu_id >= htt->max_num_pending_tx) {
65 ath10k_warn(ar, "warning: msdu_id %d too big, ignoring\n",
70 spin_lock_bh(&htt->tx_lock);
71 msdu = idr_find(&htt->pending_tx, tx_done->msdu_id);
73 ath10k_warn(ar, "received tx completion for invalid msdu_id: %d\n",
75 spin_unlock_bh(&htt->tx_lock);
79 hdr = (struct ieee80211_hdr *)msdu->data;
80 fc = hdr->frame_control;
82 if (unlikely(ieee80211_is_mgmt(fc)) &&
83 ar->hw_params.max_probe_resp_desc_thres)
84 limit_mgmt_desc = true;
86 ath10k_htt_tx_free_msdu_id(htt, tx_done->msdu_id);
87 __ath10k_htt_tx_dec_pending(htt, limit_mgmt_desc);
88 if (htt->num_pending_tx == 0)
89 wake_up(&htt->empty_tx_wq);
90 spin_unlock_bh(&htt->tx_lock);
92 skb_cb = ATH10K_SKB_CB(msdu);
93 dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
95 ath10k_report_offchan_tx(htt->ar, msdu);
97 info = IEEE80211_SKB_CB(msdu);
98 memset(&info->status, 0, sizeof(info->status));
99 info->status.rates[0].idx = -1;
101 trace_ath10k_txrx_tx_unref(ar, tx_done->msdu_id);
103 if (tx_done->discard) {
104 ieee80211_free_txskb(htt->ar->hw, msdu);
108 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
109 info->flags |= IEEE80211_TX_STAT_ACK;
112 info->flags &= ~IEEE80211_TX_STAT_ACK;
114 if (tx_done->success && (info->flags & IEEE80211_TX_CTL_NO_ACK))
115 info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
117 ieee80211_tx_status(htt->ar->hw, msdu);
118 /* we do not own the msdu anymore */
121 struct ath10k_peer *ath10k_peer_find(struct ath10k *ar, int vdev_id,
124 struct ath10k_peer *peer;
126 lockdep_assert_held(&ar->data_lock);
128 list_for_each_entry(peer, &ar->peers, list) {
129 if (peer->vdev_id != vdev_id)
131 if (memcmp(peer->addr, addr, ETH_ALEN))
140 struct ath10k_peer *ath10k_peer_find_by_id(struct ath10k *ar, int peer_id)
142 struct ath10k_peer *peer;
144 lockdep_assert_held(&ar->data_lock);
146 list_for_each_entry(peer, &ar->peers, list)
147 if (test_bit(peer_id, peer->peer_ids))
153 static int ath10k_wait_for_peer_common(struct ath10k *ar, int vdev_id,
154 const u8 *addr, bool expect_mapped)
158 time_left = wait_event_timeout(ar->peer_mapping_wq, ({
161 spin_lock_bh(&ar->data_lock);
162 mapped = !!ath10k_peer_find(ar, vdev_id, addr);
163 spin_unlock_bh(&ar->data_lock);
165 (mapped == expect_mapped ||
166 test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags));
175 int ath10k_wait_for_peer_created(struct ath10k *ar, int vdev_id, const u8 *addr)
177 return ath10k_wait_for_peer_common(ar, vdev_id, addr, true);
180 int ath10k_wait_for_peer_deleted(struct ath10k *ar, int vdev_id, const u8 *addr)
182 return ath10k_wait_for_peer_common(ar, vdev_id, addr, false);
185 void ath10k_peer_map_event(struct ath10k_htt *htt,
186 struct htt_peer_map_event *ev)
188 struct ath10k *ar = htt->ar;
189 struct ath10k_peer *peer;
191 spin_lock_bh(&ar->data_lock);
192 peer = ath10k_peer_find(ar, ev->vdev_id, ev->addr);
194 peer = kzalloc(sizeof(*peer), GFP_ATOMIC);
198 peer->vdev_id = ev->vdev_id;
199 ether_addr_copy(peer->addr, ev->addr);
200 list_add(&peer->list, &ar->peers);
201 wake_up(&ar->peer_mapping_wq);
204 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt peer map vdev %d peer %pM id %d\n",
205 ev->vdev_id, ev->addr, ev->peer_id);
207 set_bit(ev->peer_id, peer->peer_ids);
209 spin_unlock_bh(&ar->data_lock);
212 void ath10k_peer_unmap_event(struct ath10k_htt *htt,
213 struct htt_peer_unmap_event *ev)
215 struct ath10k *ar = htt->ar;
216 struct ath10k_peer *peer;
218 spin_lock_bh(&ar->data_lock);
219 peer = ath10k_peer_find_by_id(ar, ev->peer_id);
221 ath10k_warn(ar, "peer-unmap-event: unknown peer id %d\n",
226 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt peer unmap vdev %d peer %pM id %d\n",
227 peer->vdev_id, peer->addr, ev->peer_id);
229 clear_bit(ev->peer_id, peer->peer_ids);
231 if (bitmap_empty(peer->peer_ids, ATH10K_MAX_NUM_PEER_IDS)) {
232 list_del(&peer->list);
234 wake_up(&ar->peer_mapping_wq);
238 spin_unlock_bh(&ar->data_lock);