2 * NXP Wireless LAN device driver: WMM
4 * Copyright 2011-2020 NXP
6 * This software file (the "File") is distributed by NXP
7 * under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
29 /* Maximum value FW can accept for driver delay in packet transmission */
30 #define DRV_PKT_DELAY_TO_FW_MAX 512
33 #define WMM_QUEUED_PACKET_LOWER_LIMIT 180
35 #define WMM_QUEUED_PACKET_UPPER_LIMIT 200
37 /* Offset for TOS field in the IP header */
38 #define IPTOS_OFFSET 5
40 static bool disable_tx_amsdu;
41 module_param(disable_tx_amsdu, bool, 0644);
43 /* WMM information IE */
44 static const u8 wmm_info_ie[] = { WLAN_EID_VENDOR_SPECIFIC, 0x07,
45 0x00, 0x50, 0xf2, 0x02,
49 static const u8 wmm_aci_to_qidx_map[] = { WMM_AC_BE,
55 static u8 tos_to_tid[] = {
56 /* TID DSCP_P2 DSCP_P1 DSCP_P0 WMM_AC */
57 0x01, /* 0 1 0 AC_BK */
58 0x02, /* 0 0 0 AC_BK */
59 0x00, /* 0 0 1 AC_BE */
60 0x03, /* 0 1 1 AC_BE */
61 0x04, /* 1 0 0 AC_VI */
62 0x05, /* 1 0 1 AC_VI */
63 0x06, /* 1 1 0 AC_VO */
64 0x07 /* 1 1 1 AC_VO */
67 static u8 ac_to_tid[4][2] = { {1, 2}, {0, 3}, {4, 5}, {6, 7} };
70 * This function debug prints the priority parameters for a WMM AC.
73 mwifiex_wmm_ac_debug_print(const struct ieee_types_wmm_ac_parameters *ac_param)
75 const char *ac_str[] = { "BK", "BE", "VI", "VO" };
77 pr_debug("info: WMM AC_%s: ACI=%d, ACM=%d, Aifsn=%d, "
78 "EcwMin=%d, EcwMax=%d, TxopLimit=%d\n",
79 ac_str[wmm_aci_to_qidx_map[(ac_param->aci_aifsn_bitmap
80 & MWIFIEX_ACI) >> 5]],
81 (ac_param->aci_aifsn_bitmap & MWIFIEX_ACI) >> 5,
82 (ac_param->aci_aifsn_bitmap & MWIFIEX_ACM) >> 4,
83 ac_param->aci_aifsn_bitmap & MWIFIEX_AIFSN,
84 ac_param->ecw_bitmap & MWIFIEX_ECW_MIN,
85 (ac_param->ecw_bitmap & MWIFIEX_ECW_MAX) >> 4,
86 le16_to_cpu(ac_param->tx_op_limit));
90 * This function allocates a route address list.
92 * The function also initializes the list with the provided RA.
94 static struct mwifiex_ra_list_tbl *
95 mwifiex_wmm_allocate_ralist_node(struct mwifiex_adapter *adapter, const u8 *ra)
97 struct mwifiex_ra_list_tbl *ra_list;
99 ra_list = kzalloc(sizeof(struct mwifiex_ra_list_tbl), GFP_ATOMIC);
103 INIT_LIST_HEAD(&ra_list->list);
104 skb_queue_head_init(&ra_list->skb_head);
106 memcpy(ra_list->ra, ra, ETH_ALEN);
108 ra_list->total_pkt_count = 0;
110 mwifiex_dbg(adapter, INFO, "info: allocated ra_list %p\n", ra_list);
115 /* This function returns random no between 16 and 32 to be used as threshold
116 * for no of packets after which BA setup is initiated.
118 static u8 mwifiex_get_random_ba_threshold(void)
121 /* setup ba_packet_threshold here random number between
122 * [BA_SETUP_PACKET_OFFSET,
123 * BA_SETUP_PACKET_OFFSET+BA_SETUP_MAX_PACKET_THRESHOLD-1]
126 ns += (ns >> 32) + (ns >> 16);
128 return ((u8)ns % BA_SETUP_MAX_PACKET_THRESHOLD) + BA_SETUP_PACKET_OFFSET;
132 * This function allocates and adds a RA list for all TIDs
135 void mwifiex_ralist_add(struct mwifiex_private *priv, const u8 *ra)
138 struct mwifiex_ra_list_tbl *ra_list;
139 struct mwifiex_adapter *adapter = priv->adapter;
140 struct mwifiex_sta_node *node;
143 for (i = 0; i < MAX_NUM_TID; ++i) {
144 ra_list = mwifiex_wmm_allocate_ralist_node(adapter, ra);
145 mwifiex_dbg(adapter, INFO,
146 "info: created ra_list %p\n", ra_list);
151 ra_list->is_11n_enabled = 0;
152 ra_list->tdls_link = false;
153 ra_list->ba_status = BA_SETUP_NONE;
154 ra_list->amsdu_in_ampdu = false;
155 if (!mwifiex_queuing_ra_based(priv)) {
156 if (mwifiex_is_tdls_link_setup
157 (mwifiex_get_tdls_link_status(priv, ra))) {
158 ra_list->tdls_link = true;
159 ra_list->is_11n_enabled =
160 mwifiex_tdls_peer_11n_enabled(priv, ra);
162 ra_list->is_11n_enabled = IS_11N_ENABLED(priv);
165 spin_lock_bh(&priv->sta_list_spinlock);
166 node = mwifiex_get_sta_entry(priv, ra);
168 ra_list->tx_paused = node->tx_pause;
169 ra_list->is_11n_enabled =
170 mwifiex_is_sta_11n_enabled(priv, node);
171 if (ra_list->is_11n_enabled)
172 ra_list->max_amsdu = node->max_amsdu;
173 spin_unlock_bh(&priv->sta_list_spinlock);
176 mwifiex_dbg(adapter, DATA, "data: ralist %p: is_11n_enabled=%d\n",
177 ra_list, ra_list->is_11n_enabled);
179 if (ra_list->is_11n_enabled) {
180 ra_list->ba_pkt_count = 0;
181 ra_list->ba_packet_thr =
182 mwifiex_get_random_ba_threshold();
184 list_add_tail(&ra_list->list,
185 &priv->wmm.tid_tbl_ptr[i].ra_list);
190 * This function sets the WMM queue priorities to their default values.
192 static void mwifiex_wmm_default_queue_priorities(struct mwifiex_private *priv)
194 /* Default queue priorities: VO->VI->BE->BK */
195 priv->wmm.queue_priority[0] = WMM_AC_VO;
196 priv->wmm.queue_priority[1] = WMM_AC_VI;
197 priv->wmm.queue_priority[2] = WMM_AC_BE;
198 priv->wmm.queue_priority[3] = WMM_AC_BK;
202 * This function map ACs to TIDs.
205 mwifiex_wmm_queue_priorities_tid(struct mwifiex_private *priv)
207 struct mwifiex_wmm_desc *wmm = &priv->wmm;
208 u8 *queue_priority = wmm->queue_priority;
211 for (i = 0; i < 4; ++i) {
212 tos_to_tid[7 - (i * 2)] = ac_to_tid[queue_priority[i]][1];
213 tos_to_tid[6 - (i * 2)] = ac_to_tid[queue_priority[i]][0];
216 for (i = 0; i < MAX_NUM_TID; ++i)
217 priv->tos_to_tid_inv[tos_to_tid[i]] = (u8)i;
219 atomic_set(&wmm->highest_queued_prio, HIGH_PRIO_TID);
223 * This function initializes WMM priority queues.
226 mwifiex_wmm_setup_queue_priorities(struct mwifiex_private *priv,
227 struct ieee_types_wmm_parameter *wmm_ie)
229 u16 cw_min, avg_back_off, tmp[4];
233 if (!wmm_ie || !priv->wmm_enabled) {
234 /* WMM is not enabled, just set the defaults and return */
235 mwifiex_wmm_default_queue_priorities(priv);
239 mwifiex_dbg(priv->adapter, INFO,
240 "info: WMM Parameter IE: version=%d,\t"
241 "qos_info Parameter Set Count=%d, Reserved=%#x\n",
242 wmm_ie->version, wmm_ie->qos_info_bitmap &
243 IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK,
246 for (num_ac = 0; num_ac < ARRAY_SIZE(wmm_ie->ac_params); num_ac++) {
247 u8 ecw = wmm_ie->ac_params[num_ac].ecw_bitmap;
248 u8 aci_aifsn = wmm_ie->ac_params[num_ac].aci_aifsn_bitmap;
249 cw_min = (1 << (ecw & MWIFIEX_ECW_MIN)) - 1;
250 avg_back_off = (cw_min >> 1) + (aci_aifsn & MWIFIEX_AIFSN);
252 ac_idx = wmm_aci_to_qidx_map[(aci_aifsn & MWIFIEX_ACI) >> 5];
253 priv->wmm.queue_priority[ac_idx] = ac_idx;
254 tmp[ac_idx] = avg_back_off;
256 mwifiex_dbg(priv->adapter, INFO,
257 "info: WMM: CWmax=%d CWmin=%d Avg Back-off=%d\n",
258 (1 << ((ecw & MWIFIEX_ECW_MAX) >> 4)) - 1,
259 cw_min, avg_back_off);
260 mwifiex_wmm_ac_debug_print(&wmm_ie->ac_params[num_ac]);
264 for (i = 0; i < num_ac; i++) {
265 for (j = 1; j < num_ac - i; j++) {
266 if (tmp[j - 1] > tmp[j]) {
267 swap(tmp[j - 1], tmp[j]);
268 swap(priv->wmm.queue_priority[j - 1],
269 priv->wmm.queue_priority[j]);
270 } else if (tmp[j - 1] == tmp[j]) {
271 if (priv->wmm.queue_priority[j - 1]
272 < priv->wmm.queue_priority[j])
273 swap(priv->wmm.queue_priority[j - 1],
274 priv->wmm.queue_priority[j]);
279 mwifiex_wmm_queue_priorities_tid(priv);
283 * This function evaluates whether or not an AC is to be downgraded.
285 * In case the AC is not enabled, the highest AC is returned that is
286 * enabled and does not require admission control.
288 static enum mwifiex_wmm_ac_e
289 mwifiex_wmm_eval_downgrade_ac(struct mwifiex_private *priv,
290 enum mwifiex_wmm_ac_e eval_ac)
293 enum mwifiex_wmm_ac_e ret_ac;
294 struct mwifiex_wmm_ac_status *ac_status;
296 ac_status = &priv->wmm.ac_status[eval_ac];
298 if (!ac_status->disabled)
299 /* Okay to use this AC, its enabled */
302 /* Setup a default return value of the lowest priority */
306 * Find the highest AC that is enabled and does not require
307 * admission control. The spec disallows downgrading to an AC,
308 * which is enabled due to a completed admission control.
309 * Unadmitted traffic is not to be sent on an AC with admitted
312 for (down_ac = WMM_AC_BK; down_ac < eval_ac; down_ac++) {
313 ac_status = &priv->wmm.ac_status[down_ac];
315 if (!ac_status->disabled && !ac_status->flow_required)
316 /* AC is enabled and does not require admission
318 ret_ac = (enum mwifiex_wmm_ac_e) down_ac;
325 * This function downgrades WMM priority queue.
328 mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private *priv)
332 mwifiex_dbg(priv->adapter, INFO, "info: WMM: AC Priorities:\t"
333 "BK(0), BE(1), VI(2), VO(3)\n");
335 if (!priv->wmm_enabled) {
336 /* WMM is not enabled, default priorities */
337 for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++)
338 priv->wmm.ac_down_graded_vals[ac_val] =
339 (enum mwifiex_wmm_ac_e) ac_val;
341 for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++) {
342 priv->wmm.ac_down_graded_vals[ac_val]
343 = mwifiex_wmm_eval_downgrade_ac(priv,
344 (enum mwifiex_wmm_ac_e) ac_val);
345 mwifiex_dbg(priv->adapter, INFO,
346 "info: WMM: AC PRIO %d maps to %d\n",
348 priv->wmm.ac_down_graded_vals[ac_val]);
354 * This function converts the IP TOS field to an WMM AC
357 static enum mwifiex_wmm_ac_e
358 mwifiex_wmm_convert_tos_to_ac(struct mwifiex_adapter *adapter, u32 tos)
360 /* Map of TOS UP values to WMM AC */
361 static const enum mwifiex_wmm_ac_e tos_to_ac[] = {
372 if (tos >= ARRAY_SIZE(tos_to_ac))
375 return tos_to_ac[tos];
379 * This function evaluates a given TID and downgrades it to a lower
380 * TID if the WMM Parameter IE received from the AP indicates that the
381 * AP is disabled (due to call admission control (ACM bit). Mapping
382 * of TID to AC is taken care of internally.
384 u8 mwifiex_wmm_downgrade_tid(struct mwifiex_private *priv, u32 tid)
386 enum mwifiex_wmm_ac_e ac, ac_down;
389 ac = mwifiex_wmm_convert_tos_to_ac(priv->adapter, tid);
390 ac_down = priv->wmm.ac_down_graded_vals[ac];
392 /* Send the index to tid array, picking from the array will be
393 * taken care by dequeuing function
395 new_tid = ac_to_tid[ac_down][tid % 2];
401 * This function initializes the WMM state information and the
402 * WMM data path queues.
405 mwifiex_wmm_init(struct mwifiex_adapter *adapter)
408 struct mwifiex_private *priv;
410 for (j = 0; j < adapter->priv_num; ++j) {
411 priv = adapter->priv[j];
415 for (i = 0; i < MAX_NUM_TID; ++i) {
416 if (!disable_tx_amsdu &&
417 adapter->tx_buf_size > MWIFIEX_TX_DATA_BUF_SIZE_2K)
418 priv->aggr_prio_tbl[i].amsdu =
419 priv->tos_to_tid_inv[i];
421 priv->aggr_prio_tbl[i].amsdu =
422 BA_STREAM_NOT_ALLOWED;
423 priv->aggr_prio_tbl[i].ampdu_ap =
424 priv->tos_to_tid_inv[i];
425 priv->aggr_prio_tbl[i].ampdu_user =
426 priv->tos_to_tid_inv[i];
429 priv->aggr_prio_tbl[6].amsdu
430 = priv->aggr_prio_tbl[6].ampdu_ap
431 = priv->aggr_prio_tbl[6].ampdu_user
432 = BA_STREAM_NOT_ALLOWED;
434 priv->aggr_prio_tbl[7].amsdu = priv->aggr_prio_tbl[7].ampdu_ap
435 = priv->aggr_prio_tbl[7].ampdu_user
436 = BA_STREAM_NOT_ALLOWED;
438 mwifiex_set_ba_params(priv);
439 mwifiex_reset_11n_rx_seq_num(priv);
441 priv->wmm.drv_pkt_delay_max = MWIFIEX_WMM_DRV_DELAY_MAX;
442 atomic_set(&priv->wmm.tx_pkts_queued, 0);
443 atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
447 int mwifiex_bypass_txlist_empty(struct mwifiex_adapter *adapter)
449 struct mwifiex_private *priv;
452 for (i = 0; i < adapter->priv_num; i++) {
453 priv = adapter->priv[i];
456 if (adapter->if_ops.is_port_ready &&
457 !adapter->if_ops.is_port_ready(priv))
459 if (!skb_queue_empty(&priv->bypass_txq))
467 * This function checks if WMM Tx queue is empty.
470 mwifiex_wmm_lists_empty(struct mwifiex_adapter *adapter)
473 struct mwifiex_private *priv;
475 for (i = 0; i < adapter->priv_num; ++i) {
476 priv = adapter->priv[i];
479 if (!priv->port_open &&
480 (priv->bss_mode != NL80211_IFTYPE_ADHOC))
482 if (adapter->if_ops.is_port_ready &&
483 !adapter->if_ops.is_port_ready(priv))
485 if (atomic_read(&priv->wmm.tx_pkts_queued))
493 * This function deletes all packets in an RA list node.
495 * The packet sent completion callback handler are called with
496 * status failure, after they are dequeued to ensure proper
497 * cleanup. The RA list node itself is freed at the end.
500 mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private *priv,
501 struct mwifiex_ra_list_tbl *ra_list)
503 struct mwifiex_adapter *adapter = priv->adapter;
504 struct sk_buff *skb, *tmp;
506 skb_queue_walk_safe(&ra_list->skb_head, skb, tmp) {
507 skb_unlink(skb, &ra_list->skb_head);
508 mwifiex_write_data_complete(adapter, skb, 0, -1);
513 * This function deletes all packets in an RA list.
515 * Each nodes in the RA list are freed individually first, and then
516 * the RA list itself is freed.
519 mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private *priv,
520 struct list_head *ra_list_head)
522 struct mwifiex_ra_list_tbl *ra_list;
524 list_for_each_entry(ra_list, ra_list_head, list)
525 mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list);
529 * This function deletes all packets in all RA lists.
531 static void mwifiex_wmm_cleanup_queues(struct mwifiex_private *priv)
535 for (i = 0; i < MAX_NUM_TID; i++)
536 mwifiex_wmm_del_pkts_in_ralist(priv, &priv->wmm.tid_tbl_ptr[i].
539 atomic_set(&priv->wmm.tx_pkts_queued, 0);
540 atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
544 * This function deletes all route addresses from all RA lists.
546 static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private *priv)
548 struct mwifiex_ra_list_tbl *ra_list, *tmp_node;
551 for (i = 0; i < MAX_NUM_TID; ++i) {
552 mwifiex_dbg(priv->adapter, INFO,
553 "info: ra_list: freeing buf for tid %d\n", i);
554 list_for_each_entry_safe(ra_list, tmp_node,
555 &priv->wmm.tid_tbl_ptr[i].ra_list,
557 list_del(&ra_list->list);
561 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[i].ra_list);
565 static int mwifiex_free_ack_frame(int id, void *p, void *data)
567 pr_warn("Have pending ack frames!\n");
573 * This function cleans up the Tx and Rx queues.
576 * - All packets in RA lists
577 * - All entries in Rx reorder table
578 * - All entries in Tx BA stream table
579 * - MPA buffer (if required)
583 mwifiex_clean_txrx(struct mwifiex_private *priv)
585 struct sk_buff *skb, *tmp;
587 mwifiex_11n_cleanup_reorder_tbl(priv);
588 spin_lock_bh(&priv->wmm.ra_list_spinlock);
590 mwifiex_wmm_cleanup_queues(priv);
591 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
593 if (priv->adapter->if_ops.cleanup_mpa_buf)
594 priv->adapter->if_ops.cleanup_mpa_buf(priv->adapter);
596 mwifiex_wmm_delete_all_ralist(priv);
597 memcpy(tos_to_tid, ac_to_tid, sizeof(tos_to_tid));
599 if (priv->adapter->if_ops.clean_pcie_ring &&
600 !test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags))
601 priv->adapter->if_ops.clean_pcie_ring(priv->adapter);
602 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
604 skb_queue_walk_safe(&priv->tdls_txq, skb, tmp) {
605 skb_unlink(skb, &priv->tdls_txq);
606 mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
609 skb_queue_walk_safe(&priv->bypass_txq, skb, tmp) {
610 skb_unlink(skb, &priv->bypass_txq);
611 mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
613 atomic_set(&priv->adapter->bypass_tx_pending, 0);
615 idr_for_each(&priv->ack_status_frames, mwifiex_free_ack_frame, NULL);
616 idr_destroy(&priv->ack_status_frames);
620 * This function retrieves a particular RA list node, matching with the
621 * given TID and RA address.
623 struct mwifiex_ra_list_tbl *
624 mwifiex_wmm_get_ralist_node(struct mwifiex_private *priv, u8 tid,
627 struct mwifiex_ra_list_tbl *ra_list;
629 list_for_each_entry(ra_list, &priv->wmm.tid_tbl_ptr[tid].ra_list,
631 if (!memcmp(ra_list->ra, ra_addr, ETH_ALEN))
638 void mwifiex_update_ralist_tx_pause(struct mwifiex_private *priv, u8 *mac,
641 struct mwifiex_ra_list_tbl *ra_list;
642 u32 pkt_cnt = 0, tx_pkts_queued;
645 spin_lock_bh(&priv->wmm.ra_list_spinlock);
647 for (i = 0; i < MAX_NUM_TID; ++i) {
648 ra_list = mwifiex_wmm_get_ralist_node(priv, i, mac);
649 if (ra_list && ra_list->tx_paused != tx_pause) {
650 pkt_cnt += ra_list->total_pkt_count;
651 ra_list->tx_paused = tx_pause;
653 priv->wmm.pkts_paused[i] +=
654 ra_list->total_pkt_count;
656 priv->wmm.pkts_paused[i] -=
657 ra_list->total_pkt_count;
662 tx_pkts_queued = atomic_read(&priv->wmm.tx_pkts_queued);
664 tx_pkts_queued -= pkt_cnt;
666 tx_pkts_queued += pkt_cnt;
668 atomic_set(&priv->wmm.tx_pkts_queued, tx_pkts_queued);
669 atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
671 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
674 /* This function updates non-tdls peer ralist tx_pause while
675 * tdls channel switching
677 void mwifiex_update_ralist_tx_pause_in_tdls_cs(struct mwifiex_private *priv,
678 u8 *mac, u8 tx_pause)
680 struct mwifiex_ra_list_tbl *ra_list;
681 u32 pkt_cnt = 0, tx_pkts_queued;
684 spin_lock_bh(&priv->wmm.ra_list_spinlock);
686 for (i = 0; i < MAX_NUM_TID; ++i) {
687 list_for_each_entry(ra_list, &priv->wmm.tid_tbl_ptr[i].ra_list,
689 if (!memcmp(ra_list->ra, mac, ETH_ALEN))
692 if (ra_list->tx_paused != tx_pause) {
693 pkt_cnt += ra_list->total_pkt_count;
694 ra_list->tx_paused = tx_pause;
696 priv->wmm.pkts_paused[i] +=
697 ra_list->total_pkt_count;
699 priv->wmm.pkts_paused[i] -=
700 ra_list->total_pkt_count;
706 tx_pkts_queued = atomic_read(&priv->wmm.tx_pkts_queued);
708 tx_pkts_queued -= pkt_cnt;
710 tx_pkts_queued += pkt_cnt;
712 atomic_set(&priv->wmm.tx_pkts_queued, tx_pkts_queued);
713 atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
715 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
719 * This function retrieves an RA list node for a given TID and
722 * If no such node is found, a new node is added first and then
725 struct mwifiex_ra_list_tbl *
726 mwifiex_wmm_get_queue_raptr(struct mwifiex_private *priv, u8 tid,
729 struct mwifiex_ra_list_tbl *ra_list;
731 ra_list = mwifiex_wmm_get_ralist_node(priv, tid, ra_addr);
734 mwifiex_ralist_add(priv, ra_addr);
736 return mwifiex_wmm_get_ralist_node(priv, tid, ra_addr);
740 * This function deletes RA list nodes for given mac for all TIDs.
741 * Function also decrements TX pending count accordingly.
744 mwifiex_wmm_del_peer_ra_list(struct mwifiex_private *priv, const u8 *ra_addr)
746 struct mwifiex_ra_list_tbl *ra_list;
749 spin_lock_bh(&priv->wmm.ra_list_spinlock);
751 for (i = 0; i < MAX_NUM_TID; ++i) {
752 ra_list = mwifiex_wmm_get_ralist_node(priv, i, ra_addr);
756 mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list);
757 if (ra_list->tx_paused)
758 priv->wmm.pkts_paused[i] -= ra_list->total_pkt_count;
760 atomic_sub(ra_list->total_pkt_count,
761 &priv->wmm.tx_pkts_queued);
762 list_del(&ra_list->list);
765 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
769 * This function checks if a particular RA list node exists in a given TID
773 mwifiex_is_ralist_valid(struct mwifiex_private *priv,
774 struct mwifiex_ra_list_tbl *ra_list, int ptr_index)
776 struct mwifiex_ra_list_tbl *rlist;
778 list_for_each_entry(rlist, &priv->wmm.tid_tbl_ptr[ptr_index].ra_list,
780 if (rlist == ra_list)
788 * This function adds a packet to bypass TX queue.
789 * This is special TX queue for packets which can be sent even when port_open
793 mwifiex_wmm_add_buf_bypass_txqueue(struct mwifiex_private *priv,
796 skb_queue_tail(&priv->bypass_txq, skb);
800 * This function adds a packet to WMM queue.
802 * In disconnected state the packet is immediately dropped and the
803 * packet send completion callback is called with status failure.
805 * Otherwise, the correct RA list node is located and the packet
806 * is queued at the list tail.
809 mwifiex_wmm_add_buf_txqueue(struct mwifiex_private *priv,
812 struct mwifiex_adapter *adapter = priv->adapter;
814 struct mwifiex_ra_list_tbl *ra_list;
815 u8 ra[ETH_ALEN], tid_down;
816 struct list_head list_head;
817 int tdls_status = TDLS_NOT_SETUP;
818 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
819 struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb);
821 memcpy(ra, eth_hdr->h_dest, ETH_ALEN);
823 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
824 ISSUPP_TDLS_ENABLED(adapter->fw_cap_info)) {
825 if (ntohs(eth_hdr->h_proto) == ETH_P_TDLS)
826 mwifiex_dbg(adapter, DATA,
827 "TDLS setup packet for %pM.\t"
828 "Don't block\n", ra);
829 else if (memcmp(priv->cfg_bssid, ra, ETH_ALEN))
830 tdls_status = mwifiex_get_tdls_link_status(priv, ra);
833 if (!priv->media_connected && !mwifiex_is_skb_mgmt_frame(skb)) {
834 mwifiex_dbg(adapter, DATA, "data: drop packet in disconnect\n");
835 mwifiex_write_data_complete(adapter, skb, 0, -1);
841 spin_lock_bh(&priv->wmm.ra_list_spinlock);
843 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
845 /* In case of infra as we have already created the list during
846 association we just don't have to call get_queue_raptr, we will
847 have only 1 raptr for a tid in case of infra */
848 if (!mwifiex_queuing_ra_based(priv) &&
849 !mwifiex_is_skb_mgmt_frame(skb)) {
850 switch (tdls_status) {
851 case TDLS_SETUP_COMPLETE:
852 case TDLS_CHAN_SWITCHING:
853 case TDLS_IN_BASE_CHAN:
854 case TDLS_IN_OFF_CHAN:
855 ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down,
857 tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
859 case TDLS_SETUP_INPROGRESS:
860 skb_queue_tail(&priv->tdls_txq, skb);
861 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
864 list_head = priv->wmm.tid_tbl_ptr[tid_down].ra_list;
865 ra_list = list_first_entry_or_null(&list_head,
866 struct mwifiex_ra_list_tbl, list);
870 memcpy(ra, skb->data, ETH_ALEN);
871 if (ra[0] & 0x01 || mwifiex_is_skb_mgmt_frame(skb))
872 eth_broadcast_addr(ra);
873 ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down, ra);
877 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
878 mwifiex_write_data_complete(adapter, skb, 0, -1);
882 skb_queue_tail(&ra_list->skb_head, skb);
884 ra_list->ba_pkt_count++;
885 ra_list->total_pkt_count++;
887 if (atomic_read(&priv->wmm.highest_queued_prio) <
888 priv->tos_to_tid_inv[tid_down])
889 atomic_set(&priv->wmm.highest_queued_prio,
890 priv->tos_to_tid_inv[tid_down]);
892 if (ra_list->tx_paused)
893 priv->wmm.pkts_paused[tid_down]++;
895 atomic_inc(&priv->wmm.tx_pkts_queued);
897 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
901 * This function processes the get WMM status command response from firmware.
903 * The response may contain multiple TLVs -
904 * - AC Queue status TLVs
905 * - Current WMM Parameter IE TLV
906 * - Admission Control action frame TLVs
908 * This function parses the TLVs and then calls further specific functions
909 * to process any changes in the queue prioritize or state.
911 int mwifiex_ret_wmm_get_status(struct mwifiex_private *priv,
912 const struct host_cmd_ds_command *resp)
914 u8 *curr = (u8 *) &resp->params.get_wmm_status;
915 uint16_t resp_len = le16_to_cpu(resp->size), tlv_len;
916 int mask = IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK;
919 struct mwifiex_ie_types_data *tlv_hdr;
920 struct mwifiex_ie_types_wmm_queue_status *tlv_wmm_qstatus;
921 struct ieee_types_wmm_parameter *wmm_param_ie = NULL;
922 struct mwifiex_wmm_ac_status *ac_status;
924 mwifiex_dbg(priv->adapter, INFO,
925 "info: WMM: WMM_GET_STATUS cmdresp received: %d\n",
928 while ((resp_len >= sizeof(tlv_hdr->header)) && valid) {
929 tlv_hdr = (struct mwifiex_ie_types_data *) curr;
930 tlv_len = le16_to_cpu(tlv_hdr->header.len);
932 if (resp_len < tlv_len + sizeof(tlv_hdr->header))
935 switch (le16_to_cpu(tlv_hdr->header.type)) {
936 case TLV_TYPE_WMMQSTATUS:
938 (struct mwifiex_ie_types_wmm_queue_status *)
940 mwifiex_dbg(priv->adapter, CMD,
941 "info: CMD_RESP: WMM_GET_STATUS:\t"
942 "QSTATUS TLV: %d, %d, %d\n",
943 tlv_wmm_qstatus->queue_index,
944 tlv_wmm_qstatus->flow_required,
945 tlv_wmm_qstatus->disabled);
947 ac_status = &priv->wmm.ac_status[tlv_wmm_qstatus->
949 ac_status->disabled = tlv_wmm_qstatus->disabled;
950 ac_status->flow_required =
951 tlv_wmm_qstatus->flow_required;
952 ac_status->flow_created = tlv_wmm_qstatus->flow_created;
955 case WLAN_EID_VENDOR_SPECIFIC:
957 * Point the regular IEEE IE 2 bytes into the Marvell IE
958 * and setup the IEEE IE type and length byte fields
962 (struct ieee_types_wmm_parameter *) (curr +
964 wmm_param_ie->vend_hdr.len = (u8) tlv_len;
965 wmm_param_ie->vend_hdr.element_id =
966 WLAN_EID_VENDOR_SPECIFIC;
968 mwifiex_dbg(priv->adapter, CMD,
969 "info: CMD_RESP: WMM_GET_STATUS:\t"
970 "WMM Parameter Set Count: %d\n",
971 wmm_param_ie->qos_info_bitmap & mask);
973 if (wmm_param_ie->vend_hdr.len + 2 >
974 sizeof(struct ieee_types_wmm_parameter))
977 memcpy((u8 *) &priv->curr_bss_params.bss_descriptor.
978 wmm_ie, wmm_param_ie,
979 wmm_param_ie->vend_hdr.len + 2);
988 curr += (tlv_len + sizeof(tlv_hdr->header));
989 resp_len -= (tlv_len + sizeof(tlv_hdr->header));
992 mwifiex_wmm_setup_queue_priorities(priv, wmm_param_ie);
993 mwifiex_wmm_setup_ac_downgrade(priv);
999 * Callback handler from the command module to allow insertion of a WMM TLV.
1001 * If the BSS we are associating to supports WMM, this function adds the
1002 * required WMM Information IE to the association request command buffer in
1003 * the form of a Marvell extended IEEE IE.
1006 mwifiex_wmm_process_association_req(struct mwifiex_private *priv,
1008 struct ieee_types_wmm_parameter *wmm_ie,
1009 struct ieee80211_ht_cap *ht_cap)
1011 struct mwifiex_ie_types_wmm_param_set *wmm_tlv;
1023 mwifiex_dbg(priv->adapter, INFO,
1024 "info: WMM: process assoc req: bss->wmm_ie=%#x\n",
1025 wmm_ie->vend_hdr.element_id);
1027 if ((priv->wmm_required ||
1028 (ht_cap && (priv->adapter->config_bands & BAND_GN ||
1029 priv->adapter->config_bands & BAND_AN))) &&
1030 wmm_ie->vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC) {
1031 wmm_tlv = (struct mwifiex_ie_types_wmm_param_set *) *assoc_buf;
1032 wmm_tlv->header.type = cpu_to_le16((u16) wmm_info_ie[0]);
1033 wmm_tlv->header.len = cpu_to_le16((u16) wmm_info_ie[1]);
1034 memcpy(wmm_tlv->wmm_ie, &wmm_info_ie[2],
1035 le16_to_cpu(wmm_tlv->header.len));
1036 if (wmm_ie->qos_info_bitmap & IEEE80211_WMM_IE_AP_QOSINFO_UAPSD)
1037 memcpy((u8 *) (wmm_tlv->wmm_ie
1038 + le16_to_cpu(wmm_tlv->header.len)
1039 - sizeof(priv->wmm_qosinfo)),
1040 &priv->wmm_qosinfo, sizeof(priv->wmm_qosinfo));
1042 ret_len = sizeof(wmm_tlv->header)
1043 + le16_to_cpu(wmm_tlv->header.len);
1045 *assoc_buf += ret_len;
1052 * This function computes the time delay in the driver queues for a
1055 * When the packet is received at the OS/Driver interface, the current
1056 * time is set in the packet structure. The difference between the present
1057 * time and that received time is computed in this function and limited
1058 * based on pre-compiled limits in the driver.
1061 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private *priv,
1062 const struct sk_buff *skb)
1064 u32 queue_delay = ktime_to_ms(net_timedelta(skb->tstamp));
1068 * Queue delay is passed as a uint8 in units of 2ms (ms shifted
1069 * by 1). Min value (other than 0) is therefore 2ms, max is 510ms.
1071 * Pass max value if queue_delay is beyond the uint8 range
1073 ret_val = (u8) (min(queue_delay, priv->wmm.drv_pkt_delay_max) >> 1);
1075 mwifiex_dbg(priv->adapter, DATA, "data: WMM: Pkt Delay: %d ms,\t"
1076 "%d ms sent to FW\n", queue_delay, ret_val);
1082 * This function retrieves the highest priority RA list table pointer.
1084 static struct mwifiex_ra_list_tbl *
1085 mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter *adapter,
1086 struct mwifiex_private **priv, int *tid)
1088 struct mwifiex_private *priv_tmp;
1089 struct mwifiex_ra_list_tbl *ptr;
1090 struct mwifiex_tid_tbl *tid_ptr;
1094 /* check the BSS with highest priority first */
1095 for (j = adapter->priv_num - 1; j >= 0; --j) {
1096 /* iterate over BSS with the equal priority */
1097 list_for_each_entry(adapter->bss_prio_tbl[j].bss_prio_cur,
1098 &adapter->bss_prio_tbl[j].bss_prio_head,
1102 priv_tmp = adapter->bss_prio_tbl[j].bss_prio_cur->priv;
1104 if (((priv_tmp->bss_mode != NL80211_IFTYPE_ADHOC) &&
1105 !priv_tmp->port_open) ||
1106 (atomic_read(&priv_tmp->wmm.tx_pkts_queued) == 0))
1109 if (adapter->if_ops.is_port_ready &&
1110 !adapter->if_ops.is_port_ready(priv_tmp))
1113 /* iterate over the WMM queues of the BSS */
1114 hqp = &priv_tmp->wmm.highest_queued_prio;
1115 for (i = atomic_read(hqp); i >= LOW_PRIO_TID; --i) {
1117 spin_lock_bh(&priv_tmp->wmm.ra_list_spinlock);
1119 tid_ptr = &(priv_tmp)->wmm.
1120 tid_tbl_ptr[tos_to_tid[i]];
1122 /* iterate over receiver addresses */
1123 list_for_each_entry(ptr, &tid_ptr->ra_list,
1126 if (!ptr->tx_paused &&
1127 !skb_queue_empty(&ptr->skb_head))
1128 /* holds both locks */
1132 spin_unlock_bh(&priv_tmp->wmm.ra_list_spinlock);
1135 if (atomic_read(&priv_tmp->wmm.tx_pkts_queued) != 0) {
1136 atomic_set(&priv_tmp->wmm.highest_queued_prio,
1138 /* Iterate current private once more, since
1139 * there still exist packets in data queue
1143 atomic_set(&priv_tmp->wmm.highest_queued_prio,
1151 /* holds ra_list_spinlock */
1152 if (atomic_read(hqp) > i)
1154 spin_unlock_bh(&priv_tmp->wmm.ra_list_spinlock);
1157 *tid = tos_to_tid[i];
1162 /* This functions rotates ra and bss lists so packets are picked round robin.
1164 * After a packet is successfully transmitted, rotate the ra list, so the ra
1165 * next to the one transmitted, will come first in the list. This way we pick
1166 * the ra' in a round robin fashion. Same applies to bss nodes of equal
1169 * Function also increments wmm.packets_out counter.
1171 void mwifiex_rotate_priolists(struct mwifiex_private *priv,
1172 struct mwifiex_ra_list_tbl *ra,
1175 struct mwifiex_adapter *adapter = priv->adapter;
1176 struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl;
1177 struct mwifiex_tid_tbl *tid_ptr = &priv->wmm.tid_tbl_ptr[tid];
1179 spin_lock_bh(&tbl[priv->bss_priority].bss_prio_lock);
1181 * dirty trick: we remove 'head' temporarily and reinsert it after
1182 * curr bss node. imagine list to stay fixed while head is moved
1184 list_move(&tbl[priv->bss_priority].bss_prio_head,
1185 &tbl[priv->bss_priority].bss_prio_cur->list);
1186 spin_unlock_bh(&tbl[priv->bss_priority].bss_prio_lock);
1188 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1189 if (mwifiex_is_ralist_valid(priv, ra, tid)) {
1190 priv->wmm.packets_out[tid]++;
1192 list_move(&tid_ptr->ra_list, &ra->list);
1194 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1198 * This function checks if 11n aggregation is possible.
1201 mwifiex_is_11n_aggragation_possible(struct mwifiex_private *priv,
1202 struct mwifiex_ra_list_tbl *ptr,
1205 int count = 0, total_size = 0;
1206 struct sk_buff *skb, *tmp;
1209 if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP && priv->ap_11n_enabled &&
1210 ptr->is_11n_enabled)
1211 max_amsdu_size = min_t(int, ptr->max_amsdu, max_buf_size);
1213 max_amsdu_size = max_buf_size;
1215 skb_queue_walk_safe(&ptr->skb_head, skb, tmp) {
1216 total_size += skb->len;
1217 if (total_size >= max_amsdu_size)
1219 if (++count >= MIN_NUM_AMSDU)
1227 * This function sends a single packet to firmware for transmission.
1230 mwifiex_send_single_packet(struct mwifiex_private *priv,
1231 struct mwifiex_ra_list_tbl *ptr, int ptr_index)
1232 __releases(&priv->wmm.ra_list_spinlock)
1234 struct sk_buff *skb, *skb_next;
1235 struct mwifiex_tx_param tx_param;
1236 struct mwifiex_adapter *adapter = priv->adapter;
1237 struct mwifiex_txinfo *tx_info;
1239 if (skb_queue_empty(&ptr->skb_head)) {
1240 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1241 mwifiex_dbg(adapter, DATA, "data: nothing to send\n");
1245 skb = skb_dequeue(&ptr->skb_head);
1247 tx_info = MWIFIEX_SKB_TXCB(skb);
1248 mwifiex_dbg(adapter, DATA,
1249 "data: dequeuing the packet %p %p\n", ptr, skb);
1251 ptr->total_pkt_count--;
1253 if (!skb_queue_empty(&ptr->skb_head))
1254 skb_next = skb_peek(&ptr->skb_head);
1258 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1260 tx_param.next_pkt_len = ((skb_next) ? skb_next->len +
1261 sizeof(struct txpd) : 0);
1263 if (mwifiex_process_tx(priv, skb, &tx_param) == -EBUSY) {
1264 /* Queue the packet back at the head */
1265 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1267 if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
1268 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1269 mwifiex_write_data_complete(adapter, skb, 0, -1);
1273 skb_queue_tail(&ptr->skb_head, skb);
1275 ptr->total_pkt_count++;
1276 ptr->ba_pkt_count++;
1277 tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
1278 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1280 mwifiex_rotate_priolists(priv, ptr, ptr_index);
1281 atomic_dec(&priv->wmm.tx_pkts_queued);
1286 * This function checks if the first packet in the given RA list
1287 * is already processed or not.
1290 mwifiex_is_ptr_processed(struct mwifiex_private *priv,
1291 struct mwifiex_ra_list_tbl *ptr)
1293 struct sk_buff *skb;
1294 struct mwifiex_txinfo *tx_info;
1296 if (skb_queue_empty(&ptr->skb_head))
1299 skb = skb_peek(&ptr->skb_head);
1301 tx_info = MWIFIEX_SKB_TXCB(skb);
1302 if (tx_info->flags & MWIFIEX_BUF_FLAG_REQUEUED_PKT)
1309 * This function sends a single processed packet to firmware for
1313 mwifiex_send_processed_packet(struct mwifiex_private *priv,
1314 struct mwifiex_ra_list_tbl *ptr, int ptr_index)
1315 __releases(&priv->wmm.ra_list_spinlock)
1317 struct mwifiex_tx_param tx_param;
1318 struct mwifiex_adapter *adapter = priv->adapter;
1320 struct sk_buff *skb, *skb_next;
1321 struct mwifiex_txinfo *tx_info;
1323 if (skb_queue_empty(&ptr->skb_head)) {
1324 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1328 skb = skb_dequeue(&ptr->skb_head);
1330 if (adapter->data_sent || adapter->tx_lock_flag) {
1331 ptr->total_pkt_count--;
1332 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1333 skb_queue_tail(&adapter->tx_data_q, skb);
1334 atomic_dec(&priv->wmm.tx_pkts_queued);
1335 atomic_inc(&adapter->tx_queued);
1339 if (!skb_queue_empty(&ptr->skb_head))
1340 skb_next = skb_peek(&ptr->skb_head);
1344 tx_info = MWIFIEX_SKB_TXCB(skb);
1346 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1348 tx_param.next_pkt_len =
1349 ((skb_next) ? skb_next->len +
1350 sizeof(struct txpd) : 0);
1351 if (adapter->iface_type == MWIFIEX_USB) {
1352 ret = adapter->if_ops.host_to_card(adapter, priv->usb_port,
1355 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
1361 mwifiex_dbg(adapter, ERROR, "data: -EBUSY is returned\n");
1362 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1364 if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
1365 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1366 mwifiex_write_data_complete(adapter, skb, 0, -1);
1370 skb_queue_tail(&ptr->skb_head, skb);
1372 tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
1373 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1376 mwifiex_dbg(adapter, ERROR, "host_to_card failed: %#x\n", ret);
1377 adapter->dbg.num_tx_host_to_card_failure++;
1378 mwifiex_write_data_complete(adapter, skb, 0, ret);
1383 mwifiex_write_data_complete(adapter, skb, 0, ret);
1387 if (ret != -EBUSY) {
1388 mwifiex_rotate_priolists(priv, ptr, ptr_index);
1389 atomic_dec(&priv->wmm.tx_pkts_queued);
1390 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1391 ptr->total_pkt_count--;
1392 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1397 * This function dequeues a packet from the highest priority list
1401 mwifiex_dequeue_tx_packet(struct mwifiex_adapter *adapter)
1403 struct mwifiex_ra_list_tbl *ptr;
1404 struct mwifiex_private *priv = NULL;
1407 int tid_del = 0, tid = 0;
1409 ptr = mwifiex_wmm_get_highest_priolist_ptr(adapter, &priv, &ptr_index);
1413 tid = mwifiex_get_tid(ptr);
1415 mwifiex_dbg(adapter, DATA, "data: tid=%d\n", tid);
1417 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1418 if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
1419 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1423 if (mwifiex_is_ptr_processed(priv, ptr)) {
1424 mwifiex_send_processed_packet(priv, ptr, ptr_index);
1425 /* ra_list_spinlock has been freed in
1426 mwifiex_send_processed_packet() */
1430 if (!ptr->is_11n_enabled ||
1432 priv->wps.session_enable) {
1433 if (ptr->is_11n_enabled &&
1435 ptr->amsdu_in_ampdu &&
1436 mwifiex_is_amsdu_allowed(priv, tid) &&
1437 mwifiex_is_11n_aggragation_possible(priv, ptr,
1438 adapter->tx_buf_size))
1439 mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index);
1440 /* ra_list_spinlock has been freed in
1441 * mwifiex_11n_aggregate_pkt()
1444 mwifiex_send_single_packet(priv, ptr, ptr_index);
1445 /* ra_list_spinlock has been freed in
1446 * mwifiex_send_single_packet()
1449 if (mwifiex_is_ampdu_allowed(priv, ptr, tid) &&
1450 ptr->ba_pkt_count > ptr->ba_packet_thr) {
1451 if (mwifiex_space_avail_for_new_ba_stream(adapter)) {
1452 mwifiex_create_ba_tbl(priv, ptr->ra, tid,
1453 BA_SETUP_INPROGRESS);
1454 mwifiex_send_addba(priv, tid, ptr->ra);
1455 } else if (mwifiex_find_stream_to_delete
1456 (priv, tid, &tid_del, ra)) {
1457 mwifiex_create_ba_tbl(priv, ptr->ra, tid,
1458 BA_SETUP_INPROGRESS);
1459 mwifiex_send_delba(priv, tid_del, ra, 1);
1462 if (mwifiex_is_amsdu_allowed(priv, tid) &&
1463 mwifiex_is_11n_aggragation_possible(priv, ptr,
1464 adapter->tx_buf_size))
1465 mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index);
1466 /* ra_list_spinlock has been freed in
1467 mwifiex_11n_aggregate_pkt() */
1469 mwifiex_send_single_packet(priv, ptr, ptr_index);
1470 /* ra_list_spinlock has been freed in
1471 mwifiex_send_single_packet() */
1476 void mwifiex_process_bypass_tx(struct mwifiex_adapter *adapter)
1478 struct mwifiex_tx_param tx_param;
1479 struct sk_buff *skb;
1480 struct mwifiex_txinfo *tx_info;
1481 struct mwifiex_private *priv;
1484 if (adapter->data_sent || adapter->tx_lock_flag)
1487 for (i = 0; i < adapter->priv_num; ++i) {
1488 priv = adapter->priv[i];
1493 if (adapter->if_ops.is_port_ready &&
1494 !adapter->if_ops.is_port_ready(priv))
1497 if (skb_queue_empty(&priv->bypass_txq))
1500 skb = skb_dequeue(&priv->bypass_txq);
1501 tx_info = MWIFIEX_SKB_TXCB(skb);
1503 /* no aggregation for bypass packets */
1504 tx_param.next_pkt_len = 0;
1506 if (mwifiex_process_tx(priv, skb, &tx_param) == -EBUSY) {
1507 skb_queue_head(&priv->bypass_txq, skb);
1508 tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
1510 atomic_dec(&adapter->bypass_tx_pending);
1516 * This function transmits the highest priority packet awaiting in the
1520 mwifiex_wmm_process_tx(struct mwifiex_adapter *adapter)
1523 if (mwifiex_dequeue_tx_packet(adapter))
1525 if (adapter->iface_type != MWIFIEX_SDIO) {
1526 if (adapter->data_sent ||
1527 adapter->tx_lock_flag)
1530 if (atomic_read(&adapter->tx_queued) >=
1531 MWIFIEX_MAX_PKTS_TXQ)
1534 } while (!mwifiex_wmm_lists_empty(adapter));