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 54 ath10k_dbg(ar, ATH10K_DBG_HTT, 55 "htt tx completion msdu_id %u status %d\n", 56 tx_done->msdu_id, tx_done->status); 57 58 if (tx_done->msdu_id >= htt->max_num_pending_tx) { 59 ath10k_warn(ar, "warning: msdu_id %d too big, ignoring\n", 60 tx_done->msdu_id); 61 return -EINVAL; 62 } 63 64 spin_lock_bh(&htt->tx_lock); 65 msdu = idr_find(&htt->pending_tx, tx_done->msdu_id); 66 if (!msdu) { 67 ath10k_warn(ar, "received tx completion for invalid msdu_id: %d\n", 68 tx_done->msdu_id); 69 spin_unlock_bh(&htt->tx_lock); 70 return -ENOENT; 71 } 72 73 skb_cb = ATH10K_SKB_CB(msdu); 74 txq = skb_cb->txq; 75 76 if (txq) { 77 artxq = (void *)txq->drv_priv; 78 artxq->num_fw_queued--; 79 } 80 81 ath10k_htt_tx_free_msdu_id(htt, tx_done->msdu_id); 82 ath10k_htt_tx_dec_pending(htt); 83 if (htt->num_pending_tx == 0) 84 wake_up(&htt->empty_tx_wq); 85 spin_unlock_bh(&htt->tx_lock); 86 87 if (txq && txq->sta && skb_cb->airtime_est) 88 ieee80211_sta_register_airtime(txq->sta, txq->tid, 89 skb_cb->airtime_est, 0); 90 91 if (ar->bus_param.dev_type != ATH10K_DEV_TYPE_HL) 92 dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE); 93 94 ath10k_report_offchan_tx(htt->ar, msdu); 95 96 info = IEEE80211_SKB_CB(msdu); 97 memset(&info->status, 0, sizeof(info->status)); 98 trace_ath10k_txrx_tx_unref(ar, tx_done->msdu_id); 99 100 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) 101 info->flags |= IEEE80211_TX_STAT_ACK; 102 103 if (tx_done->status == HTT_TX_COMPL_STATE_NOACK) 104 info->flags &= ~IEEE80211_TX_STAT_ACK; 105 106 if ((tx_done->status == HTT_TX_COMPL_STATE_ACK) && 107 (info->flags & IEEE80211_TX_CTL_NO_ACK)) 108 info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED; 109 110 if (tx_done->status == HTT_TX_COMPL_STATE_DISCARD) { 111 if (info->flags & IEEE80211_TX_CTL_NO_ACK) 112 info->flags &= ~IEEE80211_TX_STAT_NOACK_TRANSMITTED; 113 else 114 info->flags &= ~IEEE80211_TX_STAT_ACK; 115 } 116 117 if (tx_done->status == HTT_TX_COMPL_STATE_ACK && 118 tx_done->ack_rssi != ATH10K_INVALID_RSSI) { 119 info->status.ack_signal = ATH10K_DEFAULT_NOISE_FLOOR + 120 tx_done->ack_rssi; 121 info->status.is_valid_ack_signal = true; 122 } 123 124 ieee80211_tx_status(htt->ar->hw, msdu); 125 /* we do not own the msdu anymore */ 126 127 return 0; 128 } 129 130 struct ath10k_peer *ath10k_peer_find(struct ath10k *ar, int vdev_id, 131 const u8 *addr) 132 { 133 struct ath10k_peer *peer; 134 135 lockdep_assert_held(&ar->data_lock); 136 137 list_for_each_entry(peer, &ar->peers, list) { 138 if (peer->vdev_id != vdev_id) 139 continue; 140 if (!ether_addr_equal(peer->addr, addr)) 141 continue; 142 143 return peer; 144 } 145 146 return NULL; 147 } 148 149 struct ath10k_peer *ath10k_peer_find_by_id(struct ath10k *ar, int peer_id) 150 { 151 struct ath10k_peer *peer; 152 153 lockdep_assert_held(&ar->data_lock); 154 155 list_for_each_entry(peer, &ar->peers, list) 156 if (test_bit(peer_id, peer->peer_ids)) 157 return peer; 158 159 return NULL; 160 } 161 162 static int ath10k_wait_for_peer_common(struct ath10k *ar, int vdev_id, 163 const u8 *addr, bool expect_mapped) 164 { 165 long time_left; 166 167 time_left = wait_event_timeout(ar->peer_mapping_wq, ({ 168 bool mapped; 169 170 spin_lock_bh(&ar->data_lock); 171 mapped = !!ath10k_peer_find(ar, vdev_id, addr); 172 spin_unlock_bh(&ar->data_lock); 173 174 (mapped == expect_mapped || 175 test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags)); 176 }), 3 * HZ); 177 178 if (time_left == 0) 179 return -ETIMEDOUT; 180 181 return 0; 182 } 183 184 int ath10k_wait_for_peer_created(struct ath10k *ar, int vdev_id, const u8 *addr) 185 { 186 return ath10k_wait_for_peer_common(ar, vdev_id, addr, true); 187 } 188 189 int ath10k_wait_for_peer_deleted(struct ath10k *ar, int vdev_id, const u8 *addr) 190 { 191 return ath10k_wait_for_peer_common(ar, vdev_id, addr, false); 192 } 193 194 void ath10k_peer_map_event(struct ath10k_htt *htt, 195 struct htt_peer_map_event *ev) 196 { 197 struct ath10k *ar = htt->ar; 198 struct ath10k_peer *peer; 199 200 if (ev->peer_id >= ATH10K_MAX_NUM_PEER_IDS) { 201 ath10k_warn(ar, 202 "received htt peer map event with idx out of bounds: %hu\n", 203 ev->peer_id); 204 return; 205 } 206 207 spin_lock_bh(&ar->data_lock); 208 peer = ath10k_peer_find(ar, ev->vdev_id, ev->addr); 209 if (!peer) { 210 peer = kzalloc(sizeof(*peer), GFP_ATOMIC); 211 if (!peer) 212 goto exit; 213 214 peer->vdev_id = ev->vdev_id; 215 ether_addr_copy(peer->addr, ev->addr); 216 list_add(&peer->list, &ar->peers); 217 wake_up(&ar->peer_mapping_wq); 218 } 219 220 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt peer map vdev %d peer %pM id %d\n", 221 ev->vdev_id, ev->addr, ev->peer_id); 222 223 WARN_ON(ar->peer_map[ev->peer_id] && (ar->peer_map[ev->peer_id] != peer)); 224 ar->peer_map[ev->peer_id] = peer; 225 set_bit(ev->peer_id, peer->peer_ids); 226 exit: 227 spin_unlock_bh(&ar->data_lock); 228 } 229 230 void ath10k_peer_unmap_event(struct ath10k_htt *htt, 231 struct htt_peer_unmap_event *ev) 232 { 233 struct ath10k *ar = htt->ar; 234 struct ath10k_peer *peer; 235 236 if (ev->peer_id >= ATH10K_MAX_NUM_PEER_IDS) { 237 ath10k_warn(ar, 238 "received htt peer unmap event with idx out of bounds: %hu\n", 239 ev->peer_id); 240 return; 241 } 242 243 spin_lock_bh(&ar->data_lock); 244 peer = ath10k_peer_find_by_id(ar, ev->peer_id); 245 if (!peer) { 246 ath10k_warn(ar, "peer-unmap-event: unknown peer id %d\n", 247 ev->peer_id); 248 goto exit; 249 } 250 251 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt peer unmap vdev %d peer %pM id %d\n", 252 peer->vdev_id, peer->addr, ev->peer_id); 253 254 ar->peer_map[ev->peer_id] = NULL; 255 clear_bit(ev->peer_id, peer->peer_ids); 256 257 if (bitmap_empty(peer->peer_ids, ATH10K_MAX_NUM_PEER_IDS)) { 258 list_del(&peer->list); 259 kfree(peer); 260 wake_up(&ar->peer_mapping_wq); 261 } 262 263 exit: 264 spin_unlock_bh(&ar->data_lock); 265 } 266