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 if (skb_cb->htt.txbuf)
96 dma_pool_free(htt->tx_pool,
98 skb_cb->htt.txbuf_paddr);
100 ath10k_report_offchan_tx(htt->ar, msdu);
102 info = IEEE80211_SKB_CB(msdu);
103 memset(&info->status, 0, sizeof(info->status));
104 trace_ath10k_txrx_tx_unref(ar, tx_done->msdu_id);
106 if (tx_done->discard) {
107 ieee80211_free_txskb(htt->ar->hw, msdu);
111 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
112 info->flags |= IEEE80211_TX_STAT_ACK;
115 info->flags &= ~IEEE80211_TX_STAT_ACK;
117 if (tx_done->success && (info->flags & IEEE80211_TX_CTL_NO_ACK))
118 info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
120 ieee80211_tx_status(htt->ar->hw, msdu);
121 /* we do not own the msdu anymore */
124 struct ath10k_peer *ath10k_peer_find(struct ath10k *ar, int vdev_id,
127 struct ath10k_peer *peer;
129 lockdep_assert_held(&ar->data_lock);
131 list_for_each_entry(peer, &ar->peers, list) {
132 if (peer->vdev_id != vdev_id)
134 if (memcmp(peer->addr, addr, ETH_ALEN))
143 struct ath10k_peer *ath10k_peer_find_by_id(struct ath10k *ar, int peer_id)
145 struct ath10k_peer *peer;
147 lockdep_assert_held(&ar->data_lock);
149 list_for_each_entry(peer, &ar->peers, list)
150 if (test_bit(peer_id, peer->peer_ids))
156 static int ath10k_wait_for_peer_common(struct ath10k *ar, int vdev_id,
157 const u8 *addr, bool expect_mapped)
161 time_left = wait_event_timeout(ar->peer_mapping_wq, ({
164 spin_lock_bh(&ar->data_lock);
165 mapped = !!ath10k_peer_find(ar, vdev_id, addr);
166 spin_unlock_bh(&ar->data_lock);
168 (mapped == expect_mapped ||
169 test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags));
178 int ath10k_wait_for_peer_created(struct ath10k *ar, int vdev_id, const u8 *addr)
180 return ath10k_wait_for_peer_common(ar, vdev_id, addr, true);
183 int ath10k_wait_for_peer_deleted(struct ath10k *ar, int vdev_id, const u8 *addr)
185 return ath10k_wait_for_peer_common(ar, vdev_id, addr, false);
188 void ath10k_peer_map_event(struct ath10k_htt *htt,
189 struct htt_peer_map_event *ev)
191 struct ath10k *ar = htt->ar;
192 struct ath10k_peer *peer;
194 spin_lock_bh(&ar->data_lock);
195 peer = ath10k_peer_find(ar, ev->vdev_id, ev->addr);
197 peer = kzalloc(sizeof(*peer), GFP_ATOMIC);
201 peer->vdev_id = ev->vdev_id;
202 ether_addr_copy(peer->addr, ev->addr);
203 list_add(&peer->list, &ar->peers);
204 wake_up(&ar->peer_mapping_wq);
207 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt peer map vdev %d peer %pM id %d\n",
208 ev->vdev_id, ev->addr, ev->peer_id);
210 set_bit(ev->peer_id, peer->peer_ids);
212 spin_unlock_bh(&ar->data_lock);
215 void ath10k_peer_unmap_event(struct ath10k_htt *htt,
216 struct htt_peer_unmap_event *ev)
218 struct ath10k *ar = htt->ar;
219 struct ath10k_peer *peer;
221 spin_lock_bh(&ar->data_lock);
222 peer = ath10k_peer_find_by_id(ar, ev->peer_id);
224 ath10k_warn(ar, "peer-unmap-event: unknown peer id %d\n",
229 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt peer unmap vdev %d peer %pM id %d\n",
230 peer->vdev_id, peer->addr, ev->peer_id);
232 clear_bit(ev->peer_id, peer->peer_ids);
234 if (bitmap_empty(peer->peer_ids, ATH10K_MAX_NUM_PEER_IDS)) {
235 list_del(&peer->list);
237 wake_up(&ar->peer_mapping_wq);
241 spin_unlock_bh(&ar->data_lock);