2 * Marvell Wireless LAN device driver: WMM
4 * Copyright (C) 2011-2014, Marvell International Ltd.
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. 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 struct timeval ba_tstamp;
124 /* setup ba_packet_threshold here random number between
125 * [BA_SETUP_PACKET_OFFSET,
126 * BA_SETUP_PACKET_OFFSET+BA_SETUP_MAX_PACKET_THRESHOLD-1]
129 do_gettimeofday(&ba_tstamp);
130 sec = (ba_tstamp.tv_sec & 0xFFFF) + (ba_tstamp.tv_sec >> 16);
131 usec = (ba_tstamp.tv_usec & 0xFFFF) + (ba_tstamp.tv_usec >> 16);
132 ba_threshold = (((sec << 16) + usec) % BA_SETUP_MAX_PACKET_THRESHOLD)
133 + BA_SETUP_PACKET_OFFSET;
139 * This function allocates and adds a RA list for all TIDs
142 void mwifiex_ralist_add(struct mwifiex_private *priv, const u8 *ra)
145 struct mwifiex_ra_list_tbl *ra_list;
146 struct mwifiex_adapter *adapter = priv->adapter;
147 struct mwifiex_sta_node *node;
151 for (i = 0; i < MAX_NUM_TID; ++i) {
152 ra_list = mwifiex_wmm_allocate_ralist_node(adapter, ra);
153 mwifiex_dbg(adapter, INFO,
154 "info: created ra_list %p\n", ra_list);
159 ra_list->is_11n_enabled = 0;
160 ra_list->tdls_link = false;
161 ra_list->ba_status = BA_SETUP_NONE;
162 ra_list->amsdu_in_ampdu = false;
163 ra_list->tx_paused = false;
164 if (!mwifiex_queuing_ra_based(priv)) {
165 if (mwifiex_is_tdls_link_setup
166 (mwifiex_get_tdls_link_status(priv, ra))) {
167 ra_list->tdls_link = true;
168 ra_list->is_11n_enabled =
169 mwifiex_tdls_peer_11n_enabled(priv, ra);
171 ra_list->is_11n_enabled = IS_11N_ENABLED(priv);
174 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
175 node = mwifiex_get_sta_entry(priv, ra);
176 ra_list->is_11n_enabled =
177 mwifiex_is_sta_11n_enabled(priv, node);
178 if (ra_list->is_11n_enabled)
179 ra_list->max_amsdu = node->max_amsdu;
180 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
183 mwifiex_dbg(adapter, DATA, "data: ralist %p: is_11n_enabled=%d\n",
184 ra_list, ra_list->is_11n_enabled);
186 if (ra_list->is_11n_enabled) {
187 ra_list->ba_pkt_count = 0;
188 ra_list->ba_packet_thr =
189 mwifiex_get_random_ba_threshold();
191 list_add_tail(&ra_list->list,
192 &priv->wmm.tid_tbl_ptr[i].ra_list);
197 * This function sets the WMM queue priorities to their default values.
199 static void mwifiex_wmm_default_queue_priorities(struct mwifiex_private *priv)
201 /* Default queue priorities: VO->VI->BE->BK */
202 priv->wmm.queue_priority[0] = WMM_AC_VO;
203 priv->wmm.queue_priority[1] = WMM_AC_VI;
204 priv->wmm.queue_priority[2] = WMM_AC_BE;
205 priv->wmm.queue_priority[3] = WMM_AC_BK;
209 * This function map ACs to TIDs.
212 mwifiex_wmm_queue_priorities_tid(struct mwifiex_private *priv)
214 struct mwifiex_wmm_desc *wmm = &priv->wmm;
215 u8 *queue_priority = wmm->queue_priority;
218 for (i = 0; i < 4; ++i) {
219 tos_to_tid[7 - (i * 2)] = ac_to_tid[queue_priority[i]][1];
220 tos_to_tid[6 - (i * 2)] = ac_to_tid[queue_priority[i]][0];
223 for (i = 0; i < MAX_NUM_TID; ++i)
224 priv->tos_to_tid_inv[tos_to_tid[i]] = (u8)i;
226 atomic_set(&wmm->highest_queued_prio, HIGH_PRIO_TID);
230 * This function initializes WMM priority queues.
233 mwifiex_wmm_setup_queue_priorities(struct mwifiex_private *priv,
234 struct ieee_types_wmm_parameter *wmm_ie)
236 u16 cw_min, avg_back_off, tmp[4];
240 if (!wmm_ie || !priv->wmm_enabled) {
241 /* WMM is not enabled, just set the defaults and return */
242 mwifiex_wmm_default_queue_priorities(priv);
246 mwifiex_dbg(priv->adapter, INFO,
247 "info: WMM Parameter IE: version=%d,\t"
248 "qos_info Parameter Set Count=%d, Reserved=%#x\n",
249 wmm_ie->vend_hdr.version, wmm_ie->qos_info_bitmap &
250 IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK,
253 for (num_ac = 0; num_ac < ARRAY_SIZE(wmm_ie->ac_params); num_ac++) {
254 u8 ecw = wmm_ie->ac_params[num_ac].ecw_bitmap;
255 u8 aci_aifsn = wmm_ie->ac_params[num_ac].aci_aifsn_bitmap;
256 cw_min = (1 << (ecw & MWIFIEX_ECW_MIN)) - 1;
257 avg_back_off = (cw_min >> 1) + (aci_aifsn & MWIFIEX_AIFSN);
259 ac_idx = wmm_aci_to_qidx_map[(aci_aifsn & MWIFIEX_ACI) >> 5];
260 priv->wmm.queue_priority[ac_idx] = ac_idx;
261 tmp[ac_idx] = avg_back_off;
263 mwifiex_dbg(priv->adapter, INFO,
264 "info: WMM: CWmax=%d CWmin=%d Avg Back-off=%d\n",
265 (1 << ((ecw & MWIFIEX_ECW_MAX) >> 4)) - 1,
266 cw_min, avg_back_off);
267 mwifiex_wmm_ac_debug_print(&wmm_ie->ac_params[num_ac]);
271 for (i = 0; i < num_ac; i++) {
272 for (j = 1; j < num_ac - i; j++) {
273 if (tmp[j - 1] > tmp[j]) {
274 swap(tmp[j - 1], tmp[j]);
275 swap(priv->wmm.queue_priority[j - 1],
276 priv->wmm.queue_priority[j]);
277 } else if (tmp[j - 1] == tmp[j]) {
278 if (priv->wmm.queue_priority[j - 1]
279 < priv->wmm.queue_priority[j])
280 swap(priv->wmm.queue_priority[j - 1],
281 priv->wmm.queue_priority[j]);
286 mwifiex_wmm_queue_priorities_tid(priv);
290 * This function evaluates whether or not an AC is to be downgraded.
292 * In case the AC is not enabled, the highest AC is returned that is
293 * enabled and does not require admission control.
295 static enum mwifiex_wmm_ac_e
296 mwifiex_wmm_eval_downgrade_ac(struct mwifiex_private *priv,
297 enum mwifiex_wmm_ac_e eval_ac)
300 enum mwifiex_wmm_ac_e ret_ac;
301 struct mwifiex_wmm_ac_status *ac_status;
303 ac_status = &priv->wmm.ac_status[eval_ac];
305 if (!ac_status->disabled)
306 /* Okay to use this AC, its enabled */
309 /* Setup a default return value of the lowest priority */
313 * Find the highest AC that is enabled and does not require
314 * admission control. The spec disallows downgrading to an AC,
315 * which is enabled due to a completed admission control.
316 * Unadmitted traffic is not to be sent on an AC with admitted
319 for (down_ac = WMM_AC_BK; down_ac < eval_ac; down_ac++) {
320 ac_status = &priv->wmm.ac_status[down_ac];
322 if (!ac_status->disabled && !ac_status->flow_required)
323 /* AC is enabled and does not require admission
325 ret_ac = (enum mwifiex_wmm_ac_e) down_ac;
332 * This function downgrades WMM priority queue.
335 mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private *priv)
339 mwifiex_dbg(priv->adapter, INFO, "info: WMM: AC Priorities:\t"
340 "BK(0), BE(1), VI(2), VO(3)\n");
342 if (!priv->wmm_enabled) {
343 /* WMM is not enabled, default priorities */
344 for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++)
345 priv->wmm.ac_down_graded_vals[ac_val] =
346 (enum mwifiex_wmm_ac_e) ac_val;
348 for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++) {
349 priv->wmm.ac_down_graded_vals[ac_val]
350 = mwifiex_wmm_eval_downgrade_ac(priv,
351 (enum mwifiex_wmm_ac_e) ac_val);
352 mwifiex_dbg(priv->adapter, INFO,
353 "info: WMM: AC PRIO %d maps to %d\n",
355 priv->wmm.ac_down_graded_vals[ac_val]);
361 * This function converts the IP TOS field to an WMM AC
364 static enum mwifiex_wmm_ac_e
365 mwifiex_wmm_convert_tos_to_ac(struct mwifiex_adapter *adapter, u32 tos)
367 /* Map of TOS UP values to WMM AC */
368 const enum mwifiex_wmm_ac_e tos_to_ac[] = { WMM_AC_BE,
378 if (tos >= ARRAY_SIZE(tos_to_ac))
381 return tos_to_ac[tos];
385 * This function evaluates a given TID and downgrades it to a lower
386 * TID if the WMM Parameter IE received from the AP indicates that the
387 * AP is disabled (due to call admission control (ACM bit). Mapping
388 * of TID to AC is taken care of internally.
390 u8 mwifiex_wmm_downgrade_tid(struct mwifiex_private *priv, u32 tid)
392 enum mwifiex_wmm_ac_e ac, ac_down;
395 ac = mwifiex_wmm_convert_tos_to_ac(priv->adapter, tid);
396 ac_down = priv->wmm.ac_down_graded_vals[ac];
398 /* Send the index to tid array, picking from the array will be
399 * taken care by dequeuing function
401 new_tid = ac_to_tid[ac_down][tid % 2];
407 * This function initializes the WMM state information and the
408 * WMM data path queues.
411 mwifiex_wmm_init(struct mwifiex_adapter *adapter)
414 struct mwifiex_private *priv;
416 for (j = 0; j < adapter->priv_num; ++j) {
417 priv = adapter->priv[j];
421 for (i = 0; i < MAX_NUM_TID; ++i) {
422 if (!disable_tx_amsdu &&
423 adapter->tx_buf_size > MWIFIEX_TX_DATA_BUF_SIZE_2K)
424 priv->aggr_prio_tbl[i].amsdu =
425 priv->tos_to_tid_inv[i];
427 priv->aggr_prio_tbl[i].amsdu =
428 BA_STREAM_NOT_ALLOWED;
429 priv->aggr_prio_tbl[i].ampdu_ap =
430 priv->tos_to_tid_inv[i];
431 priv->aggr_prio_tbl[i].ampdu_user =
432 priv->tos_to_tid_inv[i];
435 priv->aggr_prio_tbl[6].amsdu
436 = priv->aggr_prio_tbl[6].ampdu_ap
437 = priv->aggr_prio_tbl[6].ampdu_user
438 = BA_STREAM_NOT_ALLOWED;
440 priv->aggr_prio_tbl[7].amsdu = priv->aggr_prio_tbl[7].ampdu_ap
441 = priv->aggr_prio_tbl[7].ampdu_user
442 = BA_STREAM_NOT_ALLOWED;
444 mwifiex_set_ba_params(priv);
445 mwifiex_reset_11n_rx_seq_num(priv);
447 atomic_set(&priv->wmm.tx_pkts_queued, 0);
448 atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
452 int mwifiex_bypass_txlist_empty(struct mwifiex_adapter *adapter)
454 return atomic_read(&adapter->bypass_tx_pending) ? false : true;
458 * This function checks if WMM Tx queue is empty.
461 mwifiex_wmm_lists_empty(struct mwifiex_adapter *adapter)
464 struct mwifiex_private *priv;
466 for (i = 0; i < adapter->priv_num; ++i) {
467 priv = adapter->priv[i];
468 if (priv && !priv->port_open)
470 if (priv && atomic_read(&priv->wmm.tx_pkts_queued))
478 * This function deletes all packets in an RA list node.
480 * The packet sent completion callback handler are called with
481 * status failure, after they are dequeued to ensure proper
482 * cleanup. The RA list node itself is freed at the end.
485 mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private *priv,
486 struct mwifiex_ra_list_tbl *ra_list)
488 struct mwifiex_adapter *adapter = priv->adapter;
489 struct sk_buff *skb, *tmp;
491 skb_queue_walk_safe(&ra_list->skb_head, skb, tmp)
492 mwifiex_write_data_complete(adapter, skb, 0, -1);
496 * This function deletes all packets in an RA list.
498 * Each nodes in the RA list are freed individually first, and then
499 * the RA list itself is freed.
502 mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private *priv,
503 struct list_head *ra_list_head)
505 struct mwifiex_ra_list_tbl *ra_list;
507 list_for_each_entry(ra_list, ra_list_head, list)
508 mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list);
512 * This function deletes all packets in all RA lists.
514 static void mwifiex_wmm_cleanup_queues(struct mwifiex_private *priv)
518 for (i = 0; i < MAX_NUM_TID; i++)
519 mwifiex_wmm_del_pkts_in_ralist(priv, &priv->wmm.tid_tbl_ptr[i].
522 atomic_set(&priv->wmm.tx_pkts_queued, 0);
523 atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
527 * This function deletes all route addresses from all RA lists.
529 static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private *priv)
531 struct mwifiex_ra_list_tbl *ra_list, *tmp_node;
534 for (i = 0; i < MAX_NUM_TID; ++i) {
535 mwifiex_dbg(priv->adapter, INFO,
536 "info: ra_list: freeing buf for tid %d\n", i);
537 list_for_each_entry_safe(ra_list, tmp_node,
538 &priv->wmm.tid_tbl_ptr[i].ra_list,
540 list_del(&ra_list->list);
544 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[i].ra_list);
548 static int mwifiex_free_ack_frame(int id, void *p, void *data)
550 pr_warn("Have pending ack frames!\n");
556 * This function cleans up the Tx and Rx queues.
559 * - All packets in RA lists
560 * - All entries in Rx reorder table
561 * - All entries in Tx BA stream table
562 * - MPA buffer (if required)
566 mwifiex_clean_txrx(struct mwifiex_private *priv)
569 struct sk_buff *skb, *tmp;
571 mwifiex_11n_cleanup_reorder_tbl(priv);
572 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
574 mwifiex_wmm_cleanup_queues(priv);
575 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
577 if (priv->adapter->if_ops.cleanup_mpa_buf)
578 priv->adapter->if_ops.cleanup_mpa_buf(priv->adapter);
580 mwifiex_wmm_delete_all_ralist(priv);
581 memcpy(tos_to_tid, ac_to_tid, sizeof(tos_to_tid));
583 if (priv->adapter->if_ops.clean_pcie_ring &&
584 !priv->adapter->surprise_removed)
585 priv->adapter->if_ops.clean_pcie_ring(priv->adapter);
586 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
588 skb_queue_walk_safe(&priv->tdls_txq, skb, tmp)
589 mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
591 skb_queue_walk_safe(&priv->bypass_txq, skb, tmp)
592 mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
593 atomic_set(&priv->adapter->bypass_tx_pending, 0);
595 idr_for_each(&priv->ack_status_frames, mwifiex_free_ack_frame, NULL);
596 idr_destroy(&priv->ack_status_frames);
600 * This function retrieves a particular RA list node, matching with the
601 * given TID and RA address.
603 struct mwifiex_ra_list_tbl *
604 mwifiex_wmm_get_ralist_node(struct mwifiex_private *priv, u8 tid,
607 struct mwifiex_ra_list_tbl *ra_list;
609 list_for_each_entry(ra_list, &priv->wmm.tid_tbl_ptr[tid].ra_list,
611 if (!memcmp(ra_list->ra, ra_addr, ETH_ALEN))
618 void mwifiex_update_ralist_tx_pause(struct mwifiex_private *priv, u8 *mac,
621 struct mwifiex_ra_list_tbl *ra_list;
622 u32 pkt_cnt = 0, tx_pkts_queued;
626 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
628 for (i = 0; i < MAX_NUM_TID; ++i) {
629 ra_list = mwifiex_wmm_get_ralist_node(priv, i, mac);
630 if (ra_list && ra_list->tx_paused != tx_pause) {
631 pkt_cnt += ra_list->total_pkt_count;
632 ra_list->tx_paused = tx_pause;
634 priv->wmm.pkts_paused[i] +=
635 ra_list->total_pkt_count;
637 priv->wmm.pkts_paused[i] -=
638 ra_list->total_pkt_count;
643 tx_pkts_queued = atomic_read(&priv->wmm.tx_pkts_queued);
645 tx_pkts_queued -= pkt_cnt;
647 tx_pkts_queued += pkt_cnt;
649 atomic_set(&priv->wmm.tx_pkts_queued, tx_pkts_queued);
650 atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
652 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
655 /* This function update non-tdls peer ralist tx_pause while
656 * tdls channel swithing
658 void mwifiex_update_ralist_tx_pause_in_tdls_cs(struct mwifiex_private *priv,
659 u8 *mac, u8 tx_pause)
661 struct mwifiex_ra_list_tbl *ra_list;
662 u32 pkt_cnt = 0, tx_pkts_queued;
666 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
668 for (i = 0; i < MAX_NUM_TID; ++i) {
669 list_for_each_entry(ra_list, &priv->wmm.tid_tbl_ptr[i].ra_list,
671 if (!memcmp(ra_list->ra, mac, ETH_ALEN))
674 if (ra_list && ra_list->tx_paused != tx_pause) {
675 pkt_cnt += ra_list->total_pkt_count;
676 ra_list->tx_paused = tx_pause;
678 priv->wmm.pkts_paused[i] +=
679 ra_list->total_pkt_count;
681 priv->wmm.pkts_paused[i] -=
682 ra_list->total_pkt_count;
688 tx_pkts_queued = atomic_read(&priv->wmm.tx_pkts_queued);
690 tx_pkts_queued -= pkt_cnt;
692 tx_pkts_queued += pkt_cnt;
694 atomic_set(&priv->wmm.tx_pkts_queued, tx_pkts_queued);
695 atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
697 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
701 * This function retrieves an RA list node for a given TID and
704 * If no such node is found, a new node is added first and then
707 struct mwifiex_ra_list_tbl *
708 mwifiex_wmm_get_queue_raptr(struct mwifiex_private *priv, u8 tid,
711 struct mwifiex_ra_list_tbl *ra_list;
713 ra_list = mwifiex_wmm_get_ralist_node(priv, tid, ra_addr);
716 mwifiex_ralist_add(priv, ra_addr);
718 return mwifiex_wmm_get_ralist_node(priv, tid, ra_addr);
722 * This function deletes RA list nodes for given mac for all TIDs.
723 * Function also decrements TX pending count accordingly.
726 mwifiex_wmm_del_peer_ra_list(struct mwifiex_private *priv, const u8 *ra_addr)
728 struct mwifiex_ra_list_tbl *ra_list;
732 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
734 for (i = 0; i < MAX_NUM_TID; ++i) {
735 ra_list = mwifiex_wmm_get_ralist_node(priv, i, ra_addr);
739 mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list);
740 atomic_sub(ra_list->total_pkt_count, &priv->wmm.tx_pkts_queued);
741 list_del(&ra_list->list);
744 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
748 * This function checks if a particular RA list node exists in a given TID
752 mwifiex_is_ralist_valid(struct mwifiex_private *priv,
753 struct mwifiex_ra_list_tbl *ra_list, int ptr_index)
755 struct mwifiex_ra_list_tbl *rlist;
757 list_for_each_entry(rlist, &priv->wmm.tid_tbl_ptr[ptr_index].ra_list,
759 if (rlist == ra_list)
767 * This function adds a packet to bypass TX queue.
768 * This is special TX queue for packets which can be sent even when port_open
772 mwifiex_wmm_add_buf_bypass_txqueue(struct mwifiex_private *priv,
775 skb_queue_tail(&priv->bypass_txq, skb);
779 * This function adds a packet to WMM queue.
781 * In disconnected state the packet is immediately dropped and the
782 * packet send completion callback is called with status failure.
784 * Otherwise, the correct RA list node is located and the packet
785 * is queued at the list tail.
788 mwifiex_wmm_add_buf_txqueue(struct mwifiex_private *priv,
791 struct mwifiex_adapter *adapter = priv->adapter;
793 struct mwifiex_ra_list_tbl *ra_list;
794 u8 ra[ETH_ALEN], tid_down;
796 struct list_head list_head;
797 int tdls_status = TDLS_NOT_SETUP;
798 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
799 struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb);
801 memcpy(ra, eth_hdr->h_dest, ETH_ALEN);
803 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
804 ISSUPP_TDLS_ENABLED(adapter->fw_cap_info)) {
805 if (ntohs(eth_hdr->h_proto) == ETH_P_TDLS)
806 mwifiex_dbg(adapter, DATA,
807 "TDLS setup packet for %pM.\t"
808 "Don't block\n", ra);
809 else if (memcmp(priv->cfg_bssid, ra, ETH_ALEN))
810 tdls_status = mwifiex_get_tdls_link_status(priv, ra);
813 if (!priv->media_connected && !mwifiex_is_skb_mgmt_frame(skb)) {
814 mwifiex_dbg(adapter, DATA, "data: drop packet in disconnect\n");
815 mwifiex_write_data_complete(adapter, skb, 0, -1);
821 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
823 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
825 /* In case of infra as we have already created the list during
826 association we just don't have to call get_queue_raptr, we will
827 have only 1 raptr for a tid in case of infra */
828 if (!mwifiex_queuing_ra_based(priv) &&
829 !mwifiex_is_skb_mgmt_frame(skb)) {
830 switch (tdls_status) {
831 case TDLS_SETUP_COMPLETE:
832 case TDLS_CHAN_SWITCHING:
833 case TDLS_IN_BASE_CHAN:
834 case TDLS_IN_OFF_CHAN:
835 ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down,
837 tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
839 case TDLS_SETUP_INPROGRESS:
840 skb_queue_tail(&priv->tdls_txq, skb);
841 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
845 list_head = priv->wmm.tid_tbl_ptr[tid_down].ra_list;
846 if (!list_empty(&list_head))
847 ra_list = list_first_entry(
848 &list_head, struct mwifiex_ra_list_tbl,
855 memcpy(ra, skb->data, ETH_ALEN);
856 if (ra[0] & 0x01 || mwifiex_is_skb_mgmt_frame(skb))
857 eth_broadcast_addr(ra);
858 ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down, ra);
862 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
863 mwifiex_write_data_complete(adapter, skb, 0, -1);
867 skb_queue_tail(&ra_list->skb_head, skb);
869 ra_list->ba_pkt_count++;
870 ra_list->total_pkt_count++;
872 if (atomic_read(&priv->wmm.highest_queued_prio) <
873 priv->tos_to_tid_inv[tid_down])
874 atomic_set(&priv->wmm.highest_queued_prio,
875 priv->tos_to_tid_inv[tid_down]);
877 if (ra_list->tx_paused)
878 priv->wmm.pkts_paused[tid_down]++;
880 atomic_inc(&priv->wmm.tx_pkts_queued);
882 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
886 * This function processes the get WMM status command response from firmware.
888 * The response may contain multiple TLVs -
889 * - AC Queue status TLVs
890 * - Current WMM Parameter IE TLV
891 * - Admission Control action frame TLVs
893 * This function parses the TLVs and then calls further specific functions
894 * to process any changes in the queue prioritize or state.
896 int mwifiex_ret_wmm_get_status(struct mwifiex_private *priv,
897 const struct host_cmd_ds_command *resp)
899 u8 *curr = (u8 *) &resp->params.get_wmm_status;
900 uint16_t resp_len = le16_to_cpu(resp->size), tlv_len;
901 int mask = IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK;
904 struct mwifiex_ie_types_data *tlv_hdr;
905 struct mwifiex_ie_types_wmm_queue_status *tlv_wmm_qstatus;
906 struct ieee_types_wmm_parameter *wmm_param_ie = NULL;
907 struct mwifiex_wmm_ac_status *ac_status;
909 mwifiex_dbg(priv->adapter, INFO,
910 "info: WMM: WMM_GET_STATUS cmdresp received: %d\n",
913 while ((resp_len >= sizeof(tlv_hdr->header)) && valid) {
914 tlv_hdr = (struct mwifiex_ie_types_data *) curr;
915 tlv_len = le16_to_cpu(tlv_hdr->header.len);
917 if (resp_len < tlv_len + sizeof(tlv_hdr->header))
920 switch (le16_to_cpu(tlv_hdr->header.type)) {
921 case TLV_TYPE_WMMQSTATUS:
923 (struct mwifiex_ie_types_wmm_queue_status *)
925 mwifiex_dbg(priv->adapter, CMD,
926 "info: CMD_RESP: WMM_GET_STATUS:\t"
927 "QSTATUS TLV: %d, %d, %d\n",
928 tlv_wmm_qstatus->queue_index,
929 tlv_wmm_qstatus->flow_required,
930 tlv_wmm_qstatus->disabled);
932 ac_status = &priv->wmm.ac_status[tlv_wmm_qstatus->
934 ac_status->disabled = tlv_wmm_qstatus->disabled;
935 ac_status->flow_required =
936 tlv_wmm_qstatus->flow_required;
937 ac_status->flow_created = tlv_wmm_qstatus->flow_created;
940 case WLAN_EID_VENDOR_SPECIFIC:
942 * Point the regular IEEE IE 2 bytes into the Marvell IE
943 * and setup the IEEE IE type and length byte fields
947 (struct ieee_types_wmm_parameter *) (curr +
949 wmm_param_ie->vend_hdr.len = (u8) tlv_len;
950 wmm_param_ie->vend_hdr.element_id =
951 WLAN_EID_VENDOR_SPECIFIC;
953 mwifiex_dbg(priv->adapter, CMD,
954 "info: CMD_RESP: WMM_GET_STATUS:\t"
955 "WMM Parameter Set Count: %d\n",
956 wmm_param_ie->qos_info_bitmap & mask);
958 memcpy((u8 *) &priv->curr_bss_params.bss_descriptor.
959 wmm_ie, wmm_param_ie,
960 wmm_param_ie->vend_hdr.len + 2);
969 curr += (tlv_len + sizeof(tlv_hdr->header));
970 resp_len -= (tlv_len + sizeof(tlv_hdr->header));
973 mwifiex_wmm_setup_queue_priorities(priv, wmm_param_ie);
974 mwifiex_wmm_setup_ac_downgrade(priv);
980 * Callback handler from the command module to allow insertion of a WMM TLV.
982 * If the BSS we are associating to supports WMM, this function adds the
983 * required WMM Information IE to the association request command buffer in
984 * the form of a Marvell extended IEEE IE.
987 mwifiex_wmm_process_association_req(struct mwifiex_private *priv,
989 struct ieee_types_wmm_parameter *wmm_ie,
990 struct ieee80211_ht_cap *ht_cap)
992 struct mwifiex_ie_types_wmm_param_set *wmm_tlv;
1004 mwifiex_dbg(priv->adapter, INFO,
1005 "info: WMM: process assoc req: bss->wmm_ie=%#x\n",
1006 wmm_ie->vend_hdr.element_id);
1008 if ((priv->wmm_required ||
1009 (ht_cap && (priv->adapter->config_bands & BAND_GN ||
1010 priv->adapter->config_bands & BAND_AN))) &&
1011 wmm_ie->vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC) {
1012 wmm_tlv = (struct mwifiex_ie_types_wmm_param_set *) *assoc_buf;
1013 wmm_tlv->header.type = cpu_to_le16((u16) wmm_info_ie[0]);
1014 wmm_tlv->header.len = cpu_to_le16((u16) wmm_info_ie[1]);
1015 memcpy(wmm_tlv->wmm_ie, &wmm_info_ie[2],
1016 le16_to_cpu(wmm_tlv->header.len));
1017 if (wmm_ie->qos_info_bitmap & IEEE80211_WMM_IE_AP_QOSINFO_UAPSD)
1018 memcpy((u8 *) (wmm_tlv->wmm_ie
1019 + le16_to_cpu(wmm_tlv->header.len)
1020 - sizeof(priv->wmm_qosinfo)),
1021 &priv->wmm_qosinfo, sizeof(priv->wmm_qosinfo));
1023 ret_len = sizeof(wmm_tlv->header)
1024 + le16_to_cpu(wmm_tlv->header.len);
1026 *assoc_buf += ret_len;
1033 * This function computes the time delay in the driver queues for a
1036 * When the packet is received at the OS/Driver interface, the current
1037 * time is set in the packet structure. The difference between the present
1038 * time and that received time is computed in this function and limited
1039 * based on pre-compiled limits in the driver.
1042 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private *priv,
1043 const struct sk_buff *skb)
1045 u32 queue_delay = ktime_to_ms(net_timedelta(skb->tstamp));
1049 * Queue delay is passed as a uint8 in units of 2ms (ms shifted
1050 * by 1). Min value (other than 0) is therefore 2ms, max is 510ms.
1052 * Pass max value if queue_delay is beyond the uint8 range
1054 ret_val = (u8) (min(queue_delay, priv->wmm.drv_pkt_delay_max) >> 1);
1056 mwifiex_dbg(priv->adapter, DATA, "data: WMM: Pkt Delay: %d ms,\t"
1057 "%d ms sent to FW\n", queue_delay, ret_val);
1063 * This function retrieves the highest priority RA list table pointer.
1065 static struct mwifiex_ra_list_tbl *
1066 mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter *adapter,
1067 struct mwifiex_private **priv, int *tid)
1069 struct mwifiex_private *priv_tmp;
1070 struct mwifiex_ra_list_tbl *ptr;
1071 struct mwifiex_tid_tbl *tid_ptr;
1073 unsigned long flags_ra;
1076 /* check the BSS with highest priority first */
1077 for (j = adapter->priv_num - 1; j >= 0; --j) {
1078 /* iterate over BSS with the equal priority */
1079 list_for_each_entry(adapter->bss_prio_tbl[j].bss_prio_cur,
1080 &adapter->bss_prio_tbl[j].bss_prio_head,
1083 priv_tmp = adapter->bss_prio_tbl[j].bss_prio_cur->priv;
1085 if (!priv_tmp->port_open ||
1086 (atomic_read(&priv_tmp->wmm.tx_pkts_queued) == 0))
1089 /* iterate over the WMM queues of the BSS */
1090 hqp = &priv_tmp->wmm.highest_queued_prio;
1091 for (i = atomic_read(hqp); i >= LOW_PRIO_TID; --i) {
1093 spin_lock_irqsave(&priv_tmp->wmm.
1094 ra_list_spinlock, flags_ra);
1096 tid_ptr = &(priv_tmp)->wmm.
1097 tid_tbl_ptr[tos_to_tid[i]];
1099 /* iterate over receiver addresses */
1100 list_for_each_entry(ptr, &tid_ptr->ra_list,
1103 if (!ptr->tx_paused &&
1104 !skb_queue_empty(&ptr->skb_head))
1105 /* holds both locks */
1109 spin_unlock_irqrestore(&priv_tmp->wmm.
1120 /* holds ra_list_spinlock */
1121 if (atomic_read(hqp) > i)
1123 spin_unlock_irqrestore(&priv_tmp->wmm.ra_list_spinlock, flags_ra);
1126 *tid = tos_to_tid[i];
1131 /* This functions rotates ra and bss lists so packets are picked round robin.
1133 * After a packet is successfully transmitted, rotate the ra list, so the ra
1134 * next to the one transmitted, will come first in the list. This way we pick
1135 * the ra' in a round robin fashion. Same applies to bss nodes of equal
1138 * Function also increments wmm.packets_out counter.
1140 void mwifiex_rotate_priolists(struct mwifiex_private *priv,
1141 struct mwifiex_ra_list_tbl *ra,
1144 struct mwifiex_adapter *adapter = priv->adapter;
1145 struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl;
1146 struct mwifiex_tid_tbl *tid_ptr = &priv->wmm.tid_tbl_ptr[tid];
1147 unsigned long flags;
1149 spin_lock_irqsave(&tbl[priv->bss_priority].bss_prio_lock, flags);
1151 * dirty trick: we remove 'head' temporarily and reinsert it after
1152 * curr bss node. imagine list to stay fixed while head is moved
1154 list_move(&tbl[priv->bss_priority].bss_prio_head,
1155 &tbl[priv->bss_priority].bss_prio_cur->list);
1156 spin_unlock_irqrestore(&tbl[priv->bss_priority].bss_prio_lock, flags);
1158 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
1159 if (mwifiex_is_ralist_valid(priv, ra, tid)) {
1160 priv->wmm.packets_out[tid]++;
1162 list_move(&tid_ptr->ra_list, &ra->list);
1164 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
1168 * This function checks if 11n aggregation is possible.
1171 mwifiex_is_11n_aggragation_possible(struct mwifiex_private *priv,
1172 struct mwifiex_ra_list_tbl *ptr,
1175 int count = 0, total_size = 0;
1176 struct sk_buff *skb, *tmp;
1179 if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP && priv->ap_11n_enabled &&
1180 ptr->is_11n_enabled)
1181 max_amsdu_size = min_t(int, ptr->max_amsdu, max_buf_size);
1183 max_amsdu_size = max_buf_size;
1185 skb_queue_walk_safe(&ptr->skb_head, skb, tmp) {
1186 total_size += skb->len;
1187 if (total_size >= max_amsdu_size)
1189 if (++count >= MIN_NUM_AMSDU)
1197 * This function sends a single packet to firmware for transmission.
1200 mwifiex_send_single_packet(struct mwifiex_private *priv,
1201 struct mwifiex_ra_list_tbl *ptr, int ptr_index,
1202 unsigned long ra_list_flags)
1203 __releases(&priv->wmm.ra_list_spinlock)
1205 struct sk_buff *skb, *skb_next;
1206 struct mwifiex_tx_param tx_param;
1207 struct mwifiex_adapter *adapter = priv->adapter;
1208 struct mwifiex_txinfo *tx_info;
1210 if (skb_queue_empty(&ptr->skb_head)) {
1211 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1213 mwifiex_dbg(adapter, DATA, "data: nothing to send\n");
1217 skb = skb_dequeue(&ptr->skb_head);
1219 tx_info = MWIFIEX_SKB_TXCB(skb);
1220 mwifiex_dbg(adapter, DATA,
1221 "data: dequeuing the packet %p %p\n", ptr, skb);
1223 ptr->total_pkt_count--;
1225 if (!skb_queue_empty(&ptr->skb_head))
1226 skb_next = skb_peek(&ptr->skb_head);
1230 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags);
1232 tx_param.next_pkt_len = ((skb_next) ? skb_next->len +
1233 sizeof(struct txpd) : 0);
1235 if (mwifiex_process_tx(priv, skb, &tx_param) == -EBUSY) {
1236 /* Queue the packet back at the head */
1237 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
1239 if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
1240 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1242 mwifiex_write_data_complete(adapter, skb, 0, -1);
1246 skb_queue_tail(&ptr->skb_head, skb);
1248 ptr->total_pkt_count++;
1249 ptr->ba_pkt_count++;
1250 tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
1251 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1254 mwifiex_rotate_priolists(priv, ptr, ptr_index);
1255 atomic_dec(&priv->wmm.tx_pkts_queued);
1260 * This function checks if the first packet in the given RA list
1261 * is already processed or not.
1264 mwifiex_is_ptr_processed(struct mwifiex_private *priv,
1265 struct mwifiex_ra_list_tbl *ptr)
1267 struct sk_buff *skb;
1268 struct mwifiex_txinfo *tx_info;
1270 if (skb_queue_empty(&ptr->skb_head))
1273 skb = skb_peek(&ptr->skb_head);
1275 tx_info = MWIFIEX_SKB_TXCB(skb);
1276 if (tx_info->flags & MWIFIEX_BUF_FLAG_REQUEUED_PKT)
1283 * This function sends a single processed packet to firmware for
1287 mwifiex_send_processed_packet(struct mwifiex_private *priv,
1288 struct mwifiex_ra_list_tbl *ptr, int ptr_index,
1289 unsigned long ra_list_flags)
1290 __releases(&priv->wmm.ra_list_spinlock)
1292 struct mwifiex_tx_param tx_param;
1293 struct mwifiex_adapter *adapter = priv->adapter;
1295 struct sk_buff *skb, *skb_next;
1296 struct mwifiex_txinfo *tx_info;
1298 if (skb_queue_empty(&ptr->skb_head)) {
1299 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1304 skb = skb_dequeue(&ptr->skb_head);
1306 if (adapter->data_sent || adapter->tx_lock_flag) {
1307 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1309 skb_queue_tail(&adapter->tx_data_q, skb);
1310 atomic_inc(&adapter->tx_queued);
1314 if (!skb_queue_empty(&ptr->skb_head))
1315 skb_next = skb_peek(&ptr->skb_head);
1319 tx_info = MWIFIEX_SKB_TXCB(skb);
1321 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags);
1323 if (adapter->iface_type == MWIFIEX_USB) {
1324 adapter->data_sent = true;
1325 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_USB_EP_DATA,
1328 tx_param.next_pkt_len =
1329 ((skb_next) ? skb_next->len +
1330 sizeof(struct txpd) : 0);
1331 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
1337 mwifiex_dbg(adapter, ERROR, "data: -EBUSY is returned\n");
1338 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
1340 if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
1341 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1343 mwifiex_write_data_complete(adapter, skb, 0, -1);
1347 skb_queue_tail(&ptr->skb_head, skb);
1349 tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
1350 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1354 if (adapter->iface_type != MWIFIEX_PCIE)
1355 adapter->data_sent = false;
1356 mwifiex_dbg(adapter, ERROR, "host_to_card failed: %#x\n", ret);
1357 adapter->dbg.num_tx_host_to_card_failure++;
1358 mwifiex_write_data_complete(adapter, skb, 0, ret);
1361 if (adapter->iface_type != MWIFIEX_PCIE)
1362 adapter->data_sent = false;
1365 mwifiex_write_data_complete(adapter, skb, 0, ret);
1369 if (ret != -EBUSY) {
1370 mwifiex_rotate_priolists(priv, ptr, ptr_index);
1371 atomic_dec(&priv->wmm.tx_pkts_queued);
1376 * This function dequeues a packet from the highest priority list
1380 mwifiex_dequeue_tx_packet(struct mwifiex_adapter *adapter)
1382 struct mwifiex_ra_list_tbl *ptr;
1383 struct mwifiex_private *priv = NULL;
1386 int tid_del = 0, tid = 0;
1387 unsigned long flags;
1389 ptr = mwifiex_wmm_get_highest_priolist_ptr(adapter, &priv, &ptr_index);
1393 tid = mwifiex_get_tid(ptr);
1395 mwifiex_dbg(adapter, DATA, "data: tid=%d\n", tid);
1397 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
1398 if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
1399 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
1403 if (mwifiex_is_ptr_processed(priv, ptr)) {
1404 mwifiex_send_processed_packet(priv, ptr, ptr_index, flags);
1405 /* ra_list_spinlock has been freed in
1406 mwifiex_send_processed_packet() */
1410 if (!ptr->is_11n_enabled ||
1412 priv->wps.session_enable) {
1413 if (ptr->is_11n_enabled &&
1415 ptr->amsdu_in_ampdu &&
1416 mwifiex_is_amsdu_allowed(priv, tid) &&
1417 mwifiex_is_11n_aggragation_possible(priv, ptr,
1418 adapter->tx_buf_size))
1419 mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index, flags);
1420 /* ra_list_spinlock has been freed in
1421 * mwifiex_11n_aggregate_pkt()
1424 mwifiex_send_single_packet(priv, ptr, ptr_index, flags);
1425 /* ra_list_spinlock has been freed in
1426 * mwifiex_send_single_packet()
1429 if (mwifiex_is_ampdu_allowed(priv, ptr, tid) &&
1430 ptr->ba_pkt_count > ptr->ba_packet_thr) {
1431 if (mwifiex_space_avail_for_new_ba_stream(adapter)) {
1432 mwifiex_create_ba_tbl(priv, ptr->ra, tid,
1433 BA_SETUP_INPROGRESS);
1434 mwifiex_send_addba(priv, tid, ptr->ra);
1435 } else if (mwifiex_find_stream_to_delete
1436 (priv, tid, &tid_del, ra)) {
1437 mwifiex_create_ba_tbl(priv, ptr->ra, tid,
1438 BA_SETUP_INPROGRESS);
1439 mwifiex_send_delba(priv, tid_del, ra, 1);
1442 if (mwifiex_is_amsdu_allowed(priv, tid) &&
1443 mwifiex_is_11n_aggragation_possible(priv, ptr,
1444 adapter->tx_buf_size))
1445 mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index, flags);
1446 /* ra_list_spinlock has been freed in
1447 mwifiex_11n_aggregate_pkt() */
1449 mwifiex_send_single_packet(priv, ptr, ptr_index, flags);
1450 /* ra_list_spinlock has been freed in
1451 mwifiex_send_single_packet() */
1456 void mwifiex_process_bypass_tx(struct mwifiex_adapter *adapter)
1458 struct mwifiex_tx_param tx_param;
1459 struct sk_buff *skb;
1460 struct mwifiex_txinfo *tx_info;
1461 struct mwifiex_private *priv;
1464 if (adapter->data_sent || adapter->tx_lock_flag)
1467 for (i = 0; i < adapter->priv_num; ++i) {
1468 priv = adapter->priv[i];
1470 if (skb_queue_empty(&priv->bypass_txq))
1473 skb = skb_dequeue(&priv->bypass_txq);
1474 tx_info = MWIFIEX_SKB_TXCB(skb);
1476 /* no aggregation for bypass packets */
1477 tx_param.next_pkt_len = 0;
1479 if (mwifiex_process_tx(priv, skb, &tx_param) == -EBUSY) {
1480 skb_queue_head(&priv->bypass_txq, skb);
1481 tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
1483 atomic_dec(&adapter->bypass_tx_pending);
1489 * This function transmits the highest priority packet awaiting in the
1493 mwifiex_wmm_process_tx(struct mwifiex_adapter *adapter)
1496 if (mwifiex_dequeue_tx_packet(adapter))
1498 if (adapter->iface_type != MWIFIEX_SDIO) {
1499 if (adapter->data_sent ||
1500 adapter->tx_lock_flag)
1503 if (atomic_read(&adapter->tx_queued) >=
1504 MWIFIEX_MAX_PKTS_TXQ)
1507 } while (!mwifiex_wmm_lists_empty(adapter));