1 // SPDX-License-Identifier: ISC 2 /* 3 * Copyright (c) 2005-2011 Atheros Communications Inc. 4 * Copyright (c) 2011-2016 Qualcomm Atheros, Inc. 5 * Copyright (c) 2018, The Linux Foundation. All rights reserved. 6 */ 7 8 #include "core.h" 9 #include "txrx.h" 10 #include "htt.h" 11 #include "mac.h" 12 #include "debug.h" 13 14 static void ath10k_report_offchan_tx(struct ath10k *ar, struct sk_buff *skb) 15 { 16 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 17 18 if (likely(!(info->flags & IEEE80211_TX_CTL_TX_OFFCHAN))) 19 return; 20 21 if (ath10k_mac_tx_frm_has_freq(ar)) 22 return; 23 24 /* If the original wait_for_completion() timed out before 25 * {data,mgmt}_tx_completed() was called then we could complete 26 * offchan_tx_completed for a different skb. Prevent this by using 27 * offchan_tx_skb. 28 */ 29 spin_lock_bh(&ar->data_lock); 30 if (ar->offchan_tx_skb != skb) { 31 ath10k_warn(ar, "completed old offchannel frame\n"); 32 goto out; 33 } 34 35 complete(&ar->offchan_tx_completed); 36 ar->offchan_tx_skb = NULL; /* just for sanity */ 37 38 ath10k_dbg(ar, ATH10K_DBG_HTT, "completed offchannel skb %pK\n", skb); 39 out: 40 spin_unlock_bh(&ar->data_lock); 41 } 42 43 int ath10k_txrx_tx_unref(struct ath10k_htt *htt, 44 const struct htt_tx_done *tx_done) 45 { 46 struct ath10k *ar = htt->ar; 47 struct device *dev = ar->dev; 48 struct ieee80211_tx_info *info; 49 struct ieee80211_txq *txq; 50 struct ath10k_skb_cb *skb_cb; 51 struct ath10k_txq *artxq; 52 struct sk_buff *msdu; 53 u8 flags; 54 55 ath10k_dbg(ar, ATH10K_DBG_HTT, 56 "htt tx completion msdu_id %u status %d\n", 57 tx_done->msdu_id, tx_done->status); 58 59 if (tx_done->msdu_id >= htt->max_num_pending_tx) { 60 ath10k_warn(ar, "warning: msdu_id %d too big, ignoring\n", 61 tx_done->msdu_id); 62 return -EINVAL; 63 } 64 65 spin_lock_bh(&htt->tx_lock); 66 msdu = idr_find(&htt->pending_tx, tx_done->msdu_id); 67 if (!msdu) { 68 ath10k_warn(ar, "received tx completion for invalid msdu_id: %d\n", 69 tx_done->msdu_id); 70 spin_unlock_bh(&htt->tx_lock); 71 return -ENOENT; 72 } 73 74 skb_cb = ATH10K_SKB_CB(msdu); 75 txq = skb_cb->txq; 76 77 if (txq) { 78 artxq = (void *)txq->drv_priv; 79 artxq->num_fw_queued--; 80 } 81 82 flags = skb_cb->flags; 83 ath10k_htt_tx_free_msdu_id(htt, tx_done->msdu_id); 84 ath10k_htt_tx_dec_pending(htt); 85 if (htt->num_pending_tx == 0) 86 wake_up(&htt->empty_tx_wq); 87 spin_unlock_bh(&htt->tx_lock); 88 89 rcu_read_lock(); 90 if (txq && txq->sta && skb_cb->airtime_est) 91 ieee80211_sta_register_airtime(txq->sta, txq->tid, 92 skb_cb->airtime_est, 0); 93 rcu_read_unlock(); 94 95 if (ar->bus_param.dev_type != ATH10K_DEV_TYPE_HL) 96 dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE); 97 98 ath10k_report_offchan_tx(htt->ar, msdu); 99 100 info = IEEE80211_SKB_CB(msdu); 101 memset(&info->status, 0, sizeof(info->status)); 102 info->status.rates[0].idx = -1; 103 104 trace_ath10k_txrx_tx_unref(ar, tx_done->msdu_id); 105 106 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && 107 !(flags & ATH10K_SKB_F_NOACK_TID)) 108 info->flags |= IEEE80211_TX_STAT_ACK; 109 110 if (tx_done->status == HTT_TX_COMPL_STATE_NOACK) 111 info->flags &= ~IEEE80211_TX_STAT_ACK; 112 113 if ((tx_done->status == HTT_TX_COMPL_STATE_ACK) && 114 ((info->flags & IEEE80211_TX_CTL_NO_ACK) || 115 (flags & ATH10K_SKB_F_NOACK_TID))) 116 info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED; 117 118 if (tx_done->status == HTT_TX_COMPL_STATE_DISCARD) { 119 if ((info->flags & IEEE80211_TX_CTL_NO_ACK) || 120 (flags & ATH10K_SKB_F_NOACK_TID)) 121 info->flags &= ~IEEE80211_TX_STAT_NOACK_TRANSMITTED; 122 else 123 info->flags &= ~IEEE80211_TX_STAT_ACK; 124 } 125 126 if (tx_done->status == HTT_TX_COMPL_STATE_ACK && 127 tx_done->ack_rssi != ATH10K_INVALID_RSSI) { 128 info->status.ack_signal = ATH10K_DEFAULT_NOISE_FLOOR + 129 tx_done->ack_rssi; 130 info->status.is_valid_ack_signal = true; 131 } 132 133 ieee80211_tx_status(htt->ar->hw, msdu); 134 /* we do not own the msdu anymore */ 135 136 return 0; 137 } 138 139 struct ath10k_peer *ath10k_peer_find(struct ath10k *ar, int vdev_id, 140 const u8 *addr) 141 { 142 struct ath10k_peer *peer; 143 144 lockdep_assert_held(&ar->data_lock); 145 146 list_for_each_entry(peer, &ar->peers, list) { 147 if (peer->vdev_id != vdev_id) 148 continue; 149 if (!ether_addr_equal(peer->addr, addr)) 150 continue; 151 152 return peer; 153 } 154 155 return NULL; 156 } 157 158 struct ath10k_peer *ath10k_peer_find_by_id(struct ath10k *ar, int peer_id) 159 { 160 struct ath10k_peer *peer; 161 162 if (peer_id >= BITS_PER_TYPE(peer->peer_ids)) 163 return NULL; 164 165 lockdep_assert_held(&ar->data_lock); 166 167 list_for_each_entry(peer, &ar->peers, list) 168 if (test_bit(peer_id, peer->peer_ids)) 169 return peer; 170 171 return NULL; 172 } 173 174 static int ath10k_wait_for_peer_common(struct ath10k *ar, int vdev_id, 175 const u8 *addr, bool expect_mapped) 176 { 177 long time_left; 178 179 time_left = wait_event_timeout(ar->peer_mapping_wq, ({ 180 bool mapped; 181 182 spin_lock_bh(&ar->data_lock); 183 mapped = !!ath10k_peer_find(ar, vdev_id, addr); 184 spin_unlock_bh(&ar->data_lock); 185 186 (mapped == expect_mapped || 187 test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags)); 188 }), 3 * HZ); 189 190 if (time_left == 0) 191 return -ETIMEDOUT; 192 193 return 0; 194 } 195 196 int ath10k_wait_for_peer_created(struct ath10k *ar, int vdev_id, const u8 *addr) 197 { 198 return ath10k_wait_for_peer_common(ar, vdev_id, addr, true); 199 } 200 201 int ath10k_wait_for_peer_deleted(struct ath10k *ar, int vdev_id, const u8 *addr) 202 { 203 return ath10k_wait_for_peer_common(ar, vdev_id, addr, false); 204 } 205 206 void ath10k_peer_map_event(struct ath10k_htt *htt, 207 struct htt_peer_map_event *ev) 208 { 209 struct ath10k *ar = htt->ar; 210 struct ath10k_peer *peer; 211 212 if (ev->peer_id >= ATH10K_MAX_NUM_PEER_IDS) { 213 ath10k_warn(ar, 214 "received htt peer map event with idx out of bounds: %hu\n", 215 ev->peer_id); 216 return; 217 } 218 219 spin_lock_bh(&ar->data_lock); 220 peer = ath10k_peer_find(ar, ev->vdev_id, ev->addr); 221 if (!peer) { 222 peer = kzalloc(sizeof(*peer), GFP_ATOMIC); 223 if (!peer) 224 goto exit; 225 226 peer->vdev_id = ev->vdev_id; 227 ether_addr_copy(peer->addr, ev->addr); 228 list_add(&peer->list, &ar->peers); 229 wake_up(&ar->peer_mapping_wq); 230 } 231 232 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt peer map vdev %d peer %pM id %d\n", 233 ev->vdev_id, ev->addr, ev->peer_id); 234 235 WARN_ON(ar->peer_map[ev->peer_id] && (ar->peer_map[ev->peer_id] != peer)); 236 ar->peer_map[ev->peer_id] = peer; 237 set_bit(ev->peer_id, peer->peer_ids); 238 exit: 239 spin_unlock_bh(&ar->data_lock); 240 } 241 242 void ath10k_peer_unmap_event(struct ath10k_htt *htt, 243 struct htt_peer_unmap_event *ev) 244 { 245 struct ath10k *ar = htt->ar; 246 struct ath10k_peer *peer; 247 248 if (ev->peer_id >= ATH10K_MAX_NUM_PEER_IDS) { 249 ath10k_warn(ar, 250 "received htt peer unmap event with idx out of bounds: %hu\n", 251 ev->peer_id); 252 return; 253 } 254 255 spin_lock_bh(&ar->data_lock); 256 peer = ath10k_peer_find_by_id(ar, ev->peer_id); 257 if (!peer) { 258 ath10k_warn(ar, "peer-unmap-event: unknown peer id %d\n", 259 ev->peer_id); 260 goto exit; 261 } 262 263 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt peer unmap vdev %d peer %pM id %d\n", 264 peer->vdev_id, peer->addr, ev->peer_id); 265 266 ar->peer_map[ev->peer_id] = NULL; 267 clear_bit(ev->peer_id, peer->peer_ids); 268 269 if (bitmap_empty(peer->peer_ids, ATH10K_MAX_NUM_PEER_IDS)) { 270 list_del(&peer->list); 271 kfree(peer); 272 wake_up(&ar->peer_mapping_wq); 273 } 274 275 exit: 276 spin_unlock_bh(&ar->data_lock); 277 } 278