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 /* 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;
144 for (i = 0; i < MAX_NUM_TID; ++i) {
145 ra_list = mwifiex_wmm_allocate_ralist_node(adapter, ra);
146 mwifiex_dbg(adapter, INFO,
147 "info: created ra_list %p\n", ra_list);
152 ra_list->is_11n_enabled = 0;
153 ra_list->tdls_link = false;
154 ra_list->ba_status = BA_SETUP_NONE;
155 ra_list->amsdu_in_ampdu = false;
156 if (!mwifiex_queuing_ra_based(priv)) {
157 if (mwifiex_is_tdls_link_setup
158 (mwifiex_get_tdls_link_status(priv, ra))) {
159 ra_list->tdls_link = true;
160 ra_list->is_11n_enabled =
161 mwifiex_tdls_peer_11n_enabled(priv, ra);
163 ra_list->is_11n_enabled = IS_11N_ENABLED(priv);
166 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
167 node = mwifiex_get_sta_entry(priv, ra);
169 ra_list->tx_paused = node->tx_pause;
170 ra_list->is_11n_enabled =
171 mwifiex_is_sta_11n_enabled(priv, node);
172 if (ra_list->is_11n_enabled)
173 ra_list->max_amsdu = node->max_amsdu;
174 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
177 mwifiex_dbg(adapter, DATA, "data: ralist %p: is_11n_enabled=%d\n",
178 ra_list, ra_list->is_11n_enabled);
180 if (ra_list->is_11n_enabled) {
181 ra_list->ba_pkt_count = 0;
182 ra_list->ba_packet_thr =
183 mwifiex_get_random_ba_threshold();
185 list_add_tail(&ra_list->list,
186 &priv->wmm.tid_tbl_ptr[i].ra_list);
191 * This function sets the WMM queue priorities to their default values.
193 static void mwifiex_wmm_default_queue_priorities(struct mwifiex_private *priv)
195 /* Default queue priorities: VO->VI->BE->BK */
196 priv->wmm.queue_priority[0] = WMM_AC_VO;
197 priv->wmm.queue_priority[1] = WMM_AC_VI;
198 priv->wmm.queue_priority[2] = WMM_AC_BE;
199 priv->wmm.queue_priority[3] = WMM_AC_BK;
203 * This function map ACs to TIDs.
206 mwifiex_wmm_queue_priorities_tid(struct mwifiex_private *priv)
208 struct mwifiex_wmm_desc *wmm = &priv->wmm;
209 u8 *queue_priority = wmm->queue_priority;
212 for (i = 0; i < 4; ++i) {
213 tos_to_tid[7 - (i * 2)] = ac_to_tid[queue_priority[i]][1];
214 tos_to_tid[6 - (i * 2)] = ac_to_tid[queue_priority[i]][0];
217 for (i = 0; i < MAX_NUM_TID; ++i)
218 priv->tos_to_tid_inv[tos_to_tid[i]] = (u8)i;
220 atomic_set(&wmm->highest_queued_prio, HIGH_PRIO_TID);
224 * This function initializes WMM priority queues.
227 mwifiex_wmm_setup_queue_priorities(struct mwifiex_private *priv,
228 struct ieee_types_wmm_parameter *wmm_ie)
230 u16 cw_min, avg_back_off, tmp[4];
234 if (!wmm_ie || !priv->wmm_enabled) {
235 /* WMM is not enabled, just set the defaults and return */
236 mwifiex_wmm_default_queue_priorities(priv);
240 mwifiex_dbg(priv->adapter, INFO,
241 "info: WMM Parameter IE: version=%d,\t"
242 "qos_info Parameter Set Count=%d, Reserved=%#x\n",
243 wmm_ie->vend_hdr.version, wmm_ie->qos_info_bitmap &
244 IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK,
247 for (num_ac = 0; num_ac < ARRAY_SIZE(wmm_ie->ac_params); num_ac++) {
248 u8 ecw = wmm_ie->ac_params[num_ac].ecw_bitmap;
249 u8 aci_aifsn = wmm_ie->ac_params[num_ac].aci_aifsn_bitmap;
250 cw_min = (1 << (ecw & MWIFIEX_ECW_MIN)) - 1;
251 avg_back_off = (cw_min >> 1) + (aci_aifsn & MWIFIEX_AIFSN);
253 ac_idx = wmm_aci_to_qidx_map[(aci_aifsn & MWIFIEX_ACI) >> 5];
254 priv->wmm.queue_priority[ac_idx] = ac_idx;
255 tmp[ac_idx] = avg_back_off;
257 mwifiex_dbg(priv->adapter, INFO,
258 "info: WMM: CWmax=%d CWmin=%d Avg Back-off=%d\n",
259 (1 << ((ecw & MWIFIEX_ECW_MAX) >> 4)) - 1,
260 cw_min, avg_back_off);
261 mwifiex_wmm_ac_debug_print(&wmm_ie->ac_params[num_ac]);
265 for (i = 0; i < num_ac; i++) {
266 for (j = 1; j < num_ac - i; j++) {
267 if (tmp[j - 1] > tmp[j]) {
268 swap(tmp[j - 1], tmp[j]);
269 swap(priv->wmm.queue_priority[j - 1],
270 priv->wmm.queue_priority[j]);
271 } else if (tmp[j - 1] == tmp[j]) {
272 if (priv->wmm.queue_priority[j - 1]
273 < priv->wmm.queue_priority[j])
274 swap(priv->wmm.queue_priority[j - 1],
275 priv->wmm.queue_priority[j]);
280 mwifiex_wmm_queue_priorities_tid(priv);
284 * This function evaluates whether or not an AC is to be downgraded.
286 * In case the AC is not enabled, the highest AC is returned that is
287 * enabled and does not require admission control.
289 static enum mwifiex_wmm_ac_e
290 mwifiex_wmm_eval_downgrade_ac(struct mwifiex_private *priv,
291 enum mwifiex_wmm_ac_e eval_ac)
294 enum mwifiex_wmm_ac_e ret_ac;
295 struct mwifiex_wmm_ac_status *ac_status;
297 ac_status = &priv->wmm.ac_status[eval_ac];
299 if (!ac_status->disabled)
300 /* Okay to use this AC, its enabled */
303 /* Setup a default return value of the lowest priority */
307 * Find the highest AC that is enabled and does not require
308 * admission control. The spec disallows downgrading to an AC,
309 * which is enabled due to a completed admission control.
310 * Unadmitted traffic is not to be sent on an AC with admitted
313 for (down_ac = WMM_AC_BK; down_ac < eval_ac; down_ac++) {
314 ac_status = &priv->wmm.ac_status[down_ac];
316 if (!ac_status->disabled && !ac_status->flow_required)
317 /* AC is enabled and does not require admission
319 ret_ac = (enum mwifiex_wmm_ac_e) down_ac;
326 * This function downgrades WMM priority queue.
329 mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private *priv)
333 mwifiex_dbg(priv->adapter, INFO, "info: WMM: AC Priorities:\t"
334 "BK(0), BE(1), VI(2), VO(3)\n");
336 if (!priv->wmm_enabled) {
337 /* WMM is not enabled, default priorities */
338 for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++)
339 priv->wmm.ac_down_graded_vals[ac_val] =
340 (enum mwifiex_wmm_ac_e) ac_val;
342 for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++) {
343 priv->wmm.ac_down_graded_vals[ac_val]
344 = mwifiex_wmm_eval_downgrade_ac(priv,
345 (enum mwifiex_wmm_ac_e) ac_val);
346 mwifiex_dbg(priv->adapter, INFO,
347 "info: WMM: AC PRIO %d maps to %d\n",
349 priv->wmm.ac_down_graded_vals[ac_val]);
355 * This function converts the IP TOS field to an WMM AC
358 static enum mwifiex_wmm_ac_e
359 mwifiex_wmm_convert_tos_to_ac(struct mwifiex_adapter *adapter, u32 tos)
361 /* Map of TOS UP values to WMM AC */
362 const enum mwifiex_wmm_ac_e tos_to_ac[] = { WMM_AC_BE,
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)
586 struct sk_buff *skb, *tmp;
588 mwifiex_11n_cleanup_reorder_tbl(priv);
589 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
591 mwifiex_wmm_cleanup_queues(priv);
592 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
594 if (priv->adapter->if_ops.cleanup_mpa_buf)
595 priv->adapter->if_ops.cleanup_mpa_buf(priv->adapter);
597 mwifiex_wmm_delete_all_ralist(priv);
598 memcpy(tos_to_tid, ac_to_tid, sizeof(tos_to_tid));
600 if (priv->adapter->if_ops.clean_pcie_ring &&
601 !priv->adapter->surprise_removed)
602 priv->adapter->if_ops.clean_pcie_ring(priv->adapter);
603 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
605 skb_queue_walk_safe(&priv->tdls_txq, skb, tmp) {
606 skb_unlink(skb, &priv->tdls_txq);
607 mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
610 skb_queue_walk_safe(&priv->bypass_txq, skb, tmp) {
611 skb_unlink(skb, &priv->bypass_txq);
612 mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
614 atomic_set(&priv->adapter->bypass_tx_pending, 0);
616 idr_for_each(&priv->ack_status_frames, mwifiex_free_ack_frame, NULL);
617 idr_destroy(&priv->ack_status_frames);
621 * This function retrieves a particular RA list node, matching with the
622 * given TID and RA address.
624 struct mwifiex_ra_list_tbl *
625 mwifiex_wmm_get_ralist_node(struct mwifiex_private *priv, u8 tid,
628 struct mwifiex_ra_list_tbl *ra_list;
630 list_for_each_entry(ra_list, &priv->wmm.tid_tbl_ptr[tid].ra_list,
632 if (!memcmp(ra_list->ra, ra_addr, ETH_ALEN))
639 void mwifiex_update_ralist_tx_pause(struct mwifiex_private *priv, u8 *mac,
642 struct mwifiex_ra_list_tbl *ra_list;
643 u32 pkt_cnt = 0, tx_pkts_queued;
647 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
649 for (i = 0; i < MAX_NUM_TID; ++i) {
650 ra_list = mwifiex_wmm_get_ralist_node(priv, i, mac);
651 if (ra_list && ra_list->tx_paused != tx_pause) {
652 pkt_cnt += ra_list->total_pkt_count;
653 ra_list->tx_paused = tx_pause;
655 priv->wmm.pkts_paused[i] +=
656 ra_list->total_pkt_count;
658 priv->wmm.pkts_paused[i] -=
659 ra_list->total_pkt_count;
664 tx_pkts_queued = atomic_read(&priv->wmm.tx_pkts_queued);
666 tx_pkts_queued -= pkt_cnt;
668 tx_pkts_queued += pkt_cnt;
670 atomic_set(&priv->wmm.tx_pkts_queued, tx_pkts_queued);
671 atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
673 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
676 /* This function updates non-tdls peer ralist tx_pause while
677 * tdls channel switching
679 void mwifiex_update_ralist_tx_pause_in_tdls_cs(struct mwifiex_private *priv,
680 u8 *mac, u8 tx_pause)
682 struct mwifiex_ra_list_tbl *ra_list;
683 u32 pkt_cnt = 0, tx_pkts_queued;
687 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
689 for (i = 0; i < MAX_NUM_TID; ++i) {
690 list_for_each_entry(ra_list, &priv->wmm.tid_tbl_ptr[i].ra_list,
692 if (!memcmp(ra_list->ra, mac, ETH_ALEN))
695 if (ra_list->tx_paused != tx_pause) {
696 pkt_cnt += ra_list->total_pkt_count;
697 ra_list->tx_paused = tx_pause;
699 priv->wmm.pkts_paused[i] +=
700 ra_list->total_pkt_count;
702 priv->wmm.pkts_paused[i] -=
703 ra_list->total_pkt_count;
709 tx_pkts_queued = atomic_read(&priv->wmm.tx_pkts_queued);
711 tx_pkts_queued -= pkt_cnt;
713 tx_pkts_queued += pkt_cnt;
715 atomic_set(&priv->wmm.tx_pkts_queued, tx_pkts_queued);
716 atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
718 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
722 * This function retrieves an RA list node for a given TID and
725 * If no such node is found, a new node is added first and then
728 struct mwifiex_ra_list_tbl *
729 mwifiex_wmm_get_queue_raptr(struct mwifiex_private *priv, u8 tid,
732 struct mwifiex_ra_list_tbl *ra_list;
734 ra_list = mwifiex_wmm_get_ralist_node(priv, tid, ra_addr);
737 mwifiex_ralist_add(priv, ra_addr);
739 return mwifiex_wmm_get_ralist_node(priv, tid, ra_addr);
743 * This function deletes RA list nodes for given mac for all TIDs.
744 * Function also decrements TX pending count accordingly.
747 mwifiex_wmm_del_peer_ra_list(struct mwifiex_private *priv, const u8 *ra_addr)
749 struct mwifiex_ra_list_tbl *ra_list;
753 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
755 for (i = 0; i < MAX_NUM_TID; ++i) {
756 ra_list = mwifiex_wmm_get_ralist_node(priv, i, ra_addr);
760 mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list);
761 if (ra_list->tx_paused)
762 priv->wmm.pkts_paused[i] -= ra_list->total_pkt_count;
764 atomic_sub(ra_list->total_pkt_count,
765 &priv->wmm.tx_pkts_queued);
766 list_del(&ra_list->list);
769 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
773 * This function checks if a particular RA list node exists in a given TID
777 mwifiex_is_ralist_valid(struct mwifiex_private *priv,
778 struct mwifiex_ra_list_tbl *ra_list, int ptr_index)
780 struct mwifiex_ra_list_tbl *rlist;
782 list_for_each_entry(rlist, &priv->wmm.tid_tbl_ptr[ptr_index].ra_list,
784 if (rlist == ra_list)
792 * This function adds a packet to bypass TX queue.
793 * This is special TX queue for packets which can be sent even when port_open
797 mwifiex_wmm_add_buf_bypass_txqueue(struct mwifiex_private *priv,
800 skb_queue_tail(&priv->bypass_txq, skb);
804 * This function adds a packet to WMM queue.
806 * In disconnected state the packet is immediately dropped and the
807 * packet send completion callback is called with status failure.
809 * Otherwise, the correct RA list node is located and the packet
810 * is queued at the list tail.
813 mwifiex_wmm_add_buf_txqueue(struct mwifiex_private *priv,
816 struct mwifiex_adapter *adapter = priv->adapter;
818 struct mwifiex_ra_list_tbl *ra_list;
819 u8 ra[ETH_ALEN], tid_down;
821 struct list_head list_head;
822 int tdls_status = TDLS_NOT_SETUP;
823 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
824 struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb);
826 memcpy(ra, eth_hdr->h_dest, ETH_ALEN);
828 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
829 ISSUPP_TDLS_ENABLED(adapter->fw_cap_info)) {
830 if (ntohs(eth_hdr->h_proto) == ETH_P_TDLS)
831 mwifiex_dbg(adapter, DATA,
832 "TDLS setup packet for %pM.\t"
833 "Don't block\n", ra);
834 else if (memcmp(priv->cfg_bssid, ra, ETH_ALEN))
835 tdls_status = mwifiex_get_tdls_link_status(priv, ra);
838 if (!priv->media_connected && !mwifiex_is_skb_mgmt_frame(skb)) {
839 mwifiex_dbg(adapter, DATA, "data: drop packet in disconnect\n");
840 mwifiex_write_data_complete(adapter, skb, 0, -1);
846 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
848 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
850 /* In case of infra as we have already created the list during
851 association we just don't have to call get_queue_raptr, we will
852 have only 1 raptr for a tid in case of infra */
853 if (!mwifiex_queuing_ra_based(priv) &&
854 !mwifiex_is_skb_mgmt_frame(skb)) {
855 switch (tdls_status) {
856 case TDLS_SETUP_COMPLETE:
857 case TDLS_CHAN_SWITCHING:
858 case TDLS_IN_BASE_CHAN:
859 case TDLS_IN_OFF_CHAN:
860 ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down,
862 tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
864 case TDLS_SETUP_INPROGRESS:
865 skb_queue_tail(&priv->tdls_txq, skb);
866 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
870 list_head = priv->wmm.tid_tbl_ptr[tid_down].ra_list;
871 if (!list_empty(&list_head))
872 ra_list = list_first_entry(
873 &list_head, struct mwifiex_ra_list_tbl,
880 memcpy(ra, skb->data, ETH_ALEN);
881 if (ra[0] & 0x01 || mwifiex_is_skb_mgmt_frame(skb))
882 eth_broadcast_addr(ra);
883 ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down, ra);
887 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
888 mwifiex_write_data_complete(adapter, skb, 0, -1);
892 skb_queue_tail(&ra_list->skb_head, skb);
894 ra_list->ba_pkt_count++;
895 ra_list->total_pkt_count++;
897 if (atomic_read(&priv->wmm.highest_queued_prio) <
898 priv->tos_to_tid_inv[tid_down])
899 atomic_set(&priv->wmm.highest_queued_prio,
900 priv->tos_to_tid_inv[tid_down]);
902 if (ra_list->tx_paused)
903 priv->wmm.pkts_paused[tid_down]++;
905 atomic_inc(&priv->wmm.tx_pkts_queued);
907 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
911 * This function processes the get WMM status command response from firmware.
913 * The response may contain multiple TLVs -
914 * - AC Queue status TLVs
915 * - Current WMM Parameter IE TLV
916 * - Admission Control action frame TLVs
918 * This function parses the TLVs and then calls further specific functions
919 * to process any changes in the queue prioritize or state.
921 int mwifiex_ret_wmm_get_status(struct mwifiex_private *priv,
922 const struct host_cmd_ds_command *resp)
924 u8 *curr = (u8 *) &resp->params.get_wmm_status;
925 uint16_t resp_len = le16_to_cpu(resp->size), tlv_len;
926 int mask = IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK;
929 struct mwifiex_ie_types_data *tlv_hdr;
930 struct mwifiex_ie_types_wmm_queue_status *tlv_wmm_qstatus;
931 struct ieee_types_wmm_parameter *wmm_param_ie = NULL;
932 struct mwifiex_wmm_ac_status *ac_status;
934 mwifiex_dbg(priv->adapter, INFO,
935 "info: WMM: WMM_GET_STATUS cmdresp received: %d\n",
938 while ((resp_len >= sizeof(tlv_hdr->header)) && valid) {
939 tlv_hdr = (struct mwifiex_ie_types_data *) curr;
940 tlv_len = le16_to_cpu(tlv_hdr->header.len);
942 if (resp_len < tlv_len + sizeof(tlv_hdr->header))
945 switch (le16_to_cpu(tlv_hdr->header.type)) {
946 case TLV_TYPE_WMMQSTATUS:
948 (struct mwifiex_ie_types_wmm_queue_status *)
950 mwifiex_dbg(priv->adapter, CMD,
951 "info: CMD_RESP: WMM_GET_STATUS:\t"
952 "QSTATUS TLV: %d, %d, %d\n",
953 tlv_wmm_qstatus->queue_index,
954 tlv_wmm_qstatus->flow_required,
955 tlv_wmm_qstatus->disabled);
957 ac_status = &priv->wmm.ac_status[tlv_wmm_qstatus->
959 ac_status->disabled = tlv_wmm_qstatus->disabled;
960 ac_status->flow_required =
961 tlv_wmm_qstatus->flow_required;
962 ac_status->flow_created = tlv_wmm_qstatus->flow_created;
965 case WLAN_EID_VENDOR_SPECIFIC:
967 * Point the regular IEEE IE 2 bytes into the Marvell IE
968 * and setup the IEEE IE type and length byte fields
972 (struct ieee_types_wmm_parameter *) (curr +
974 wmm_param_ie->vend_hdr.len = (u8) tlv_len;
975 wmm_param_ie->vend_hdr.element_id =
976 WLAN_EID_VENDOR_SPECIFIC;
978 mwifiex_dbg(priv->adapter, CMD,
979 "info: CMD_RESP: WMM_GET_STATUS:\t"
980 "WMM Parameter Set Count: %d\n",
981 wmm_param_ie->qos_info_bitmap & mask);
983 memcpy((u8 *) &priv->curr_bss_params.bss_descriptor.
984 wmm_ie, wmm_param_ie,
985 wmm_param_ie->vend_hdr.len + 2);
994 curr += (tlv_len + sizeof(tlv_hdr->header));
995 resp_len -= (tlv_len + sizeof(tlv_hdr->header));
998 mwifiex_wmm_setup_queue_priorities(priv, wmm_param_ie);
999 mwifiex_wmm_setup_ac_downgrade(priv);
1005 * Callback handler from the command module to allow insertion of a WMM TLV.
1007 * If the BSS we are associating to supports WMM, this function adds the
1008 * required WMM Information IE to the association request command buffer in
1009 * the form of a Marvell extended IEEE IE.
1012 mwifiex_wmm_process_association_req(struct mwifiex_private *priv,
1014 struct ieee_types_wmm_parameter *wmm_ie,
1015 struct ieee80211_ht_cap *ht_cap)
1017 struct mwifiex_ie_types_wmm_param_set *wmm_tlv;
1029 mwifiex_dbg(priv->adapter, INFO,
1030 "info: WMM: process assoc req: bss->wmm_ie=%#x\n",
1031 wmm_ie->vend_hdr.element_id);
1033 if ((priv->wmm_required ||
1034 (ht_cap && (priv->adapter->config_bands & BAND_GN ||
1035 priv->adapter->config_bands & BAND_AN))) &&
1036 wmm_ie->vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC) {
1037 wmm_tlv = (struct mwifiex_ie_types_wmm_param_set *) *assoc_buf;
1038 wmm_tlv->header.type = cpu_to_le16((u16) wmm_info_ie[0]);
1039 wmm_tlv->header.len = cpu_to_le16((u16) wmm_info_ie[1]);
1040 memcpy(wmm_tlv->wmm_ie, &wmm_info_ie[2],
1041 le16_to_cpu(wmm_tlv->header.len));
1042 if (wmm_ie->qos_info_bitmap & IEEE80211_WMM_IE_AP_QOSINFO_UAPSD)
1043 memcpy((u8 *) (wmm_tlv->wmm_ie
1044 + le16_to_cpu(wmm_tlv->header.len)
1045 - sizeof(priv->wmm_qosinfo)),
1046 &priv->wmm_qosinfo, sizeof(priv->wmm_qosinfo));
1048 ret_len = sizeof(wmm_tlv->header)
1049 + le16_to_cpu(wmm_tlv->header.len);
1051 *assoc_buf += ret_len;
1058 * This function computes the time delay in the driver queues for a
1061 * When the packet is received at the OS/Driver interface, the current
1062 * time is set in the packet structure. The difference between the present
1063 * time and that received time is computed in this function and limited
1064 * based on pre-compiled limits in the driver.
1067 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private *priv,
1068 const struct sk_buff *skb)
1070 u32 queue_delay = ktime_to_ms(net_timedelta(skb->tstamp));
1074 * Queue delay is passed as a uint8 in units of 2ms (ms shifted
1075 * by 1). Min value (other than 0) is therefore 2ms, max is 510ms.
1077 * Pass max value if queue_delay is beyond the uint8 range
1079 ret_val = (u8) (min(queue_delay, priv->wmm.drv_pkt_delay_max) >> 1);
1081 mwifiex_dbg(priv->adapter, DATA, "data: WMM: Pkt Delay: %d ms,\t"
1082 "%d ms sent to FW\n", queue_delay, ret_val);
1088 * This function retrieves the highest priority RA list table pointer.
1090 static struct mwifiex_ra_list_tbl *
1091 mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter *adapter,
1092 struct mwifiex_private **priv, int *tid)
1094 struct mwifiex_private *priv_tmp;
1095 struct mwifiex_ra_list_tbl *ptr;
1096 struct mwifiex_tid_tbl *tid_ptr;
1098 unsigned long flags_ra;
1101 /* check the BSS with highest priority first */
1102 for (j = adapter->priv_num - 1; j >= 0; --j) {
1103 /* iterate over BSS with the equal priority */
1104 list_for_each_entry(adapter->bss_prio_tbl[j].bss_prio_cur,
1105 &adapter->bss_prio_tbl[j].bss_prio_head,
1109 priv_tmp = adapter->bss_prio_tbl[j].bss_prio_cur->priv;
1111 if (((priv_tmp->bss_mode != NL80211_IFTYPE_ADHOC) &&
1112 !priv_tmp->port_open) ||
1113 (atomic_read(&priv_tmp->wmm.tx_pkts_queued) == 0))
1116 if (adapter->if_ops.is_port_ready &&
1117 !adapter->if_ops.is_port_ready(priv_tmp))
1120 /* iterate over the WMM queues of the BSS */
1121 hqp = &priv_tmp->wmm.highest_queued_prio;
1122 for (i = atomic_read(hqp); i >= LOW_PRIO_TID; --i) {
1124 spin_lock_irqsave(&priv_tmp->wmm.
1125 ra_list_spinlock, flags_ra);
1127 tid_ptr = &(priv_tmp)->wmm.
1128 tid_tbl_ptr[tos_to_tid[i]];
1130 /* iterate over receiver addresses */
1131 list_for_each_entry(ptr, &tid_ptr->ra_list,
1134 if (!ptr->tx_paused &&
1135 !skb_queue_empty(&ptr->skb_head))
1136 /* holds both locks */
1140 spin_unlock_irqrestore(&priv_tmp->wmm.
1145 if (atomic_read(&priv_tmp->wmm.tx_pkts_queued) != 0) {
1146 atomic_set(&priv_tmp->wmm.highest_queued_prio,
1148 /* Iterate current private once more, since
1149 * there still exist packets in data queue
1153 atomic_set(&priv_tmp->wmm.highest_queued_prio,
1161 /* holds ra_list_spinlock */
1162 if (atomic_read(hqp) > i)
1164 spin_unlock_irqrestore(&priv_tmp->wmm.ra_list_spinlock, flags_ra);
1167 *tid = tos_to_tid[i];
1172 /* This functions rotates ra and bss lists so packets are picked round robin.
1174 * After a packet is successfully transmitted, rotate the ra list, so the ra
1175 * next to the one transmitted, will come first in the list. This way we pick
1176 * the ra' in a round robin fashion. Same applies to bss nodes of equal
1179 * Function also increments wmm.packets_out counter.
1181 void mwifiex_rotate_priolists(struct mwifiex_private *priv,
1182 struct mwifiex_ra_list_tbl *ra,
1185 struct mwifiex_adapter *adapter = priv->adapter;
1186 struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl;
1187 struct mwifiex_tid_tbl *tid_ptr = &priv->wmm.tid_tbl_ptr[tid];
1188 unsigned long flags;
1190 spin_lock_irqsave(&tbl[priv->bss_priority].bss_prio_lock, flags);
1192 * dirty trick: we remove 'head' temporarily and reinsert it after
1193 * curr bss node. imagine list to stay fixed while head is moved
1195 list_move(&tbl[priv->bss_priority].bss_prio_head,
1196 &tbl[priv->bss_priority].bss_prio_cur->list);
1197 spin_unlock_irqrestore(&tbl[priv->bss_priority].bss_prio_lock, flags);
1199 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
1200 if (mwifiex_is_ralist_valid(priv, ra, tid)) {
1201 priv->wmm.packets_out[tid]++;
1203 list_move(&tid_ptr->ra_list, &ra->list);
1205 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
1209 * This function checks if 11n aggregation is possible.
1212 mwifiex_is_11n_aggragation_possible(struct mwifiex_private *priv,
1213 struct mwifiex_ra_list_tbl *ptr,
1216 int count = 0, total_size = 0;
1217 struct sk_buff *skb, *tmp;
1220 if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP && priv->ap_11n_enabled &&
1221 ptr->is_11n_enabled)
1222 max_amsdu_size = min_t(int, ptr->max_amsdu, max_buf_size);
1224 max_amsdu_size = max_buf_size;
1226 skb_queue_walk_safe(&ptr->skb_head, skb, tmp) {
1227 total_size += skb->len;
1228 if (total_size >= max_amsdu_size)
1230 if (++count >= MIN_NUM_AMSDU)
1238 * This function sends a single packet to firmware for transmission.
1241 mwifiex_send_single_packet(struct mwifiex_private *priv,
1242 struct mwifiex_ra_list_tbl *ptr, int ptr_index,
1243 unsigned long ra_list_flags)
1244 __releases(&priv->wmm.ra_list_spinlock)
1246 struct sk_buff *skb, *skb_next;
1247 struct mwifiex_tx_param tx_param;
1248 struct mwifiex_adapter *adapter = priv->adapter;
1249 struct mwifiex_txinfo *tx_info;
1251 if (skb_queue_empty(&ptr->skb_head)) {
1252 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1254 mwifiex_dbg(adapter, DATA, "data: nothing to send\n");
1258 skb = skb_dequeue(&ptr->skb_head);
1260 tx_info = MWIFIEX_SKB_TXCB(skb);
1261 mwifiex_dbg(adapter, DATA,
1262 "data: dequeuing the packet %p %p\n", ptr, skb);
1264 ptr->total_pkt_count--;
1266 if (!skb_queue_empty(&ptr->skb_head))
1267 skb_next = skb_peek(&ptr->skb_head);
1271 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags);
1273 tx_param.next_pkt_len = ((skb_next) ? skb_next->len +
1274 sizeof(struct txpd) : 0);
1276 if (mwifiex_process_tx(priv, skb, &tx_param) == -EBUSY) {
1277 /* Queue the packet back at the head */
1278 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
1280 if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
1281 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1283 mwifiex_write_data_complete(adapter, skb, 0, -1);
1287 skb_queue_tail(&ptr->skb_head, skb);
1289 ptr->total_pkt_count++;
1290 ptr->ba_pkt_count++;
1291 tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
1292 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1295 mwifiex_rotate_priolists(priv, ptr, ptr_index);
1296 atomic_dec(&priv->wmm.tx_pkts_queued);
1301 * This function checks if the first packet in the given RA list
1302 * is already processed or not.
1305 mwifiex_is_ptr_processed(struct mwifiex_private *priv,
1306 struct mwifiex_ra_list_tbl *ptr)
1308 struct sk_buff *skb;
1309 struct mwifiex_txinfo *tx_info;
1311 if (skb_queue_empty(&ptr->skb_head))
1314 skb = skb_peek(&ptr->skb_head);
1316 tx_info = MWIFIEX_SKB_TXCB(skb);
1317 if (tx_info->flags & MWIFIEX_BUF_FLAG_REQUEUED_PKT)
1324 * This function sends a single processed packet to firmware for
1328 mwifiex_send_processed_packet(struct mwifiex_private *priv,
1329 struct mwifiex_ra_list_tbl *ptr, int ptr_index,
1330 unsigned long ra_list_flags)
1331 __releases(&priv->wmm.ra_list_spinlock)
1333 struct mwifiex_tx_param tx_param;
1334 struct mwifiex_adapter *adapter = priv->adapter;
1336 struct sk_buff *skb, *skb_next;
1337 struct mwifiex_txinfo *tx_info;
1339 if (skb_queue_empty(&ptr->skb_head)) {
1340 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1345 skb = skb_dequeue(&ptr->skb_head);
1347 if (adapter->data_sent || adapter->tx_lock_flag) {
1348 ptr->total_pkt_count--;
1349 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1351 skb_queue_tail(&adapter->tx_data_q, skb);
1352 atomic_dec(&priv->wmm.tx_pkts_queued);
1353 atomic_inc(&adapter->tx_queued);
1357 if (!skb_queue_empty(&ptr->skb_head))
1358 skb_next = skb_peek(&ptr->skb_head);
1362 tx_info = MWIFIEX_SKB_TXCB(skb);
1364 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags);
1366 if (adapter->iface_type == MWIFIEX_USB) {
1367 ret = adapter->if_ops.host_to_card(adapter, priv->usb_port,
1370 tx_param.next_pkt_len =
1371 ((skb_next) ? skb_next->len +
1372 sizeof(struct txpd) : 0);
1373 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
1379 mwifiex_dbg(adapter, ERROR, "data: -EBUSY is returned\n");
1380 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
1382 if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
1383 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1385 mwifiex_write_data_complete(adapter, skb, 0, -1);
1389 skb_queue_tail(&ptr->skb_head, skb);
1391 tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
1392 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1396 mwifiex_dbg(adapter, ERROR, "host_to_card failed: %#x\n", ret);
1397 adapter->dbg.num_tx_host_to_card_failure++;
1398 mwifiex_write_data_complete(adapter, skb, 0, ret);
1403 mwifiex_write_data_complete(adapter, skb, 0, ret);
1407 if (ret != -EBUSY) {
1408 mwifiex_rotate_priolists(priv, ptr, ptr_index);
1409 atomic_dec(&priv->wmm.tx_pkts_queued);
1410 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
1411 ptr->total_pkt_count--;
1412 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1418 * This function dequeues a packet from the highest priority list
1422 mwifiex_dequeue_tx_packet(struct mwifiex_adapter *adapter)
1424 struct mwifiex_ra_list_tbl *ptr;
1425 struct mwifiex_private *priv = NULL;
1428 int tid_del = 0, tid = 0;
1429 unsigned long flags;
1431 ptr = mwifiex_wmm_get_highest_priolist_ptr(adapter, &priv, &ptr_index);
1435 tid = mwifiex_get_tid(ptr);
1437 mwifiex_dbg(adapter, DATA, "data: tid=%d\n", tid);
1439 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
1440 if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
1441 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
1445 if (mwifiex_is_ptr_processed(priv, ptr)) {
1446 mwifiex_send_processed_packet(priv, ptr, ptr_index, flags);
1447 /* ra_list_spinlock has been freed in
1448 mwifiex_send_processed_packet() */
1452 if (!ptr->is_11n_enabled ||
1454 priv->wps.session_enable) {
1455 if (ptr->is_11n_enabled &&
1457 ptr->amsdu_in_ampdu &&
1458 mwifiex_is_amsdu_allowed(priv, tid) &&
1459 mwifiex_is_11n_aggragation_possible(priv, ptr,
1460 adapter->tx_buf_size))
1461 mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index, flags);
1462 /* ra_list_spinlock has been freed in
1463 * mwifiex_11n_aggregate_pkt()
1466 mwifiex_send_single_packet(priv, ptr, ptr_index, flags);
1467 /* ra_list_spinlock has been freed in
1468 * mwifiex_send_single_packet()
1471 if (mwifiex_is_ampdu_allowed(priv, ptr, tid) &&
1472 ptr->ba_pkt_count > ptr->ba_packet_thr) {
1473 if (mwifiex_space_avail_for_new_ba_stream(adapter)) {
1474 mwifiex_create_ba_tbl(priv, ptr->ra, tid,
1475 BA_SETUP_INPROGRESS);
1476 mwifiex_send_addba(priv, tid, ptr->ra);
1477 } else if (mwifiex_find_stream_to_delete
1478 (priv, tid, &tid_del, ra)) {
1479 mwifiex_create_ba_tbl(priv, ptr->ra, tid,
1480 BA_SETUP_INPROGRESS);
1481 mwifiex_send_delba(priv, tid_del, ra, 1);
1484 if (mwifiex_is_amsdu_allowed(priv, tid) &&
1485 mwifiex_is_11n_aggragation_possible(priv, ptr,
1486 adapter->tx_buf_size))
1487 mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index, flags);
1488 /* ra_list_spinlock has been freed in
1489 mwifiex_11n_aggregate_pkt() */
1491 mwifiex_send_single_packet(priv, ptr, ptr_index, flags);
1492 /* ra_list_spinlock has been freed in
1493 mwifiex_send_single_packet() */
1498 void mwifiex_process_bypass_tx(struct mwifiex_adapter *adapter)
1500 struct mwifiex_tx_param tx_param;
1501 struct sk_buff *skb;
1502 struct mwifiex_txinfo *tx_info;
1503 struct mwifiex_private *priv;
1506 if (adapter->data_sent || adapter->tx_lock_flag)
1509 for (i = 0; i < adapter->priv_num; ++i) {
1510 priv = adapter->priv[i];
1515 if (adapter->if_ops.is_port_ready &&
1516 !adapter->if_ops.is_port_ready(priv))
1519 if (skb_queue_empty(&priv->bypass_txq))
1522 skb = skb_dequeue(&priv->bypass_txq);
1523 tx_info = MWIFIEX_SKB_TXCB(skb);
1525 /* no aggregation for bypass packets */
1526 tx_param.next_pkt_len = 0;
1528 if (mwifiex_process_tx(priv, skb, &tx_param) == -EBUSY) {
1529 skb_queue_head(&priv->bypass_txq, skb);
1530 tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
1532 atomic_dec(&adapter->bypass_tx_pending);
1538 * This function transmits the highest priority packet awaiting in the
1542 mwifiex_wmm_process_tx(struct mwifiex_adapter *adapter)
1545 if (mwifiex_dequeue_tx_packet(adapter))
1547 if (adapter->iface_type != MWIFIEX_SDIO) {
1548 if (adapter->data_sent ||
1549 adapter->tx_lock_flag)
1552 if (atomic_read(&adapter->tx_queued) >=
1553 MWIFIEX_MAX_PKTS_TXQ)
1556 } while (!mwifiex_wmm_lists_empty(adapter));