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 if (!mwifiex_queuing_ra_based(priv)) {
164 if (mwifiex_get_tdls_link_status(priv, ra) ==
165 TDLS_SETUP_COMPLETE) {
166 ra_list->tdls_link = true;
167 ra_list->is_11n_enabled =
168 mwifiex_tdls_peer_11n_enabled(priv, ra);
170 ra_list->is_11n_enabled = IS_11N_ENABLED(priv);
173 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
174 node = mwifiex_get_sta_entry(priv, ra);
175 ra_list->is_11n_enabled =
176 mwifiex_is_sta_11n_enabled(priv, node);
177 if (ra_list->is_11n_enabled)
178 ra_list->max_amsdu = node->max_amsdu;
179 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
182 mwifiex_dbg(adapter, DATA, "data: ralist %p: is_11n_enabled=%d\n",
183 ra_list, ra_list->is_11n_enabled);
185 if (ra_list->is_11n_enabled) {
186 ra_list->ba_pkt_count = 0;
187 ra_list->ba_packet_thr =
188 mwifiex_get_random_ba_threshold();
190 list_add_tail(&ra_list->list,
191 &priv->wmm.tid_tbl_ptr[i].ra_list);
196 * This function sets the WMM queue priorities to their default values.
198 static void mwifiex_wmm_default_queue_priorities(struct mwifiex_private *priv)
200 /* Default queue priorities: VO->VI->BE->BK */
201 priv->wmm.queue_priority[0] = WMM_AC_VO;
202 priv->wmm.queue_priority[1] = WMM_AC_VI;
203 priv->wmm.queue_priority[2] = WMM_AC_BE;
204 priv->wmm.queue_priority[3] = WMM_AC_BK;
208 * This function map ACs to TIDs.
211 mwifiex_wmm_queue_priorities_tid(struct mwifiex_private *priv)
213 struct mwifiex_wmm_desc *wmm = &priv->wmm;
214 u8 *queue_priority = wmm->queue_priority;
217 for (i = 0; i < 4; ++i) {
218 tos_to_tid[7 - (i * 2)] = ac_to_tid[queue_priority[i]][1];
219 tos_to_tid[6 - (i * 2)] = ac_to_tid[queue_priority[i]][0];
222 for (i = 0; i < MAX_NUM_TID; ++i)
223 priv->tos_to_tid_inv[tos_to_tid[i]] = (u8)i;
225 atomic_set(&wmm->highest_queued_prio, HIGH_PRIO_TID);
229 * This function initializes WMM priority queues.
232 mwifiex_wmm_setup_queue_priorities(struct mwifiex_private *priv,
233 struct ieee_types_wmm_parameter *wmm_ie)
235 u16 cw_min, avg_back_off, tmp[4];
239 if (!wmm_ie || !priv->wmm_enabled) {
240 /* WMM is not enabled, just set the defaults and return */
241 mwifiex_wmm_default_queue_priorities(priv);
245 mwifiex_dbg(priv->adapter, INFO,
246 "info: WMM Parameter IE: version=%d,\t"
247 "qos_info Parameter Set Count=%d, Reserved=%#x\n",
248 wmm_ie->vend_hdr.version, wmm_ie->qos_info_bitmap &
249 IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK,
252 for (num_ac = 0; num_ac < ARRAY_SIZE(wmm_ie->ac_params); num_ac++) {
253 u8 ecw = wmm_ie->ac_params[num_ac].ecw_bitmap;
254 u8 aci_aifsn = wmm_ie->ac_params[num_ac].aci_aifsn_bitmap;
255 cw_min = (1 << (ecw & MWIFIEX_ECW_MIN)) - 1;
256 avg_back_off = (cw_min >> 1) + (aci_aifsn & MWIFIEX_AIFSN);
258 ac_idx = wmm_aci_to_qidx_map[(aci_aifsn & MWIFIEX_ACI) >> 5];
259 priv->wmm.queue_priority[ac_idx] = ac_idx;
260 tmp[ac_idx] = avg_back_off;
262 mwifiex_dbg(priv->adapter, INFO,
263 "info: WMM: CWmax=%d CWmin=%d Avg Back-off=%d\n",
264 (1 << ((ecw & MWIFIEX_ECW_MAX) >> 4)) - 1,
265 cw_min, avg_back_off);
266 mwifiex_wmm_ac_debug_print(&wmm_ie->ac_params[num_ac]);
270 for (i = 0; i < num_ac; i++) {
271 for (j = 1; j < num_ac - i; j++) {
272 if (tmp[j - 1] > tmp[j]) {
273 swap(tmp[j - 1], tmp[j]);
274 swap(priv->wmm.queue_priority[j - 1],
275 priv->wmm.queue_priority[j]);
276 } else if (tmp[j - 1] == tmp[j]) {
277 if (priv->wmm.queue_priority[j - 1]
278 < priv->wmm.queue_priority[j])
279 swap(priv->wmm.queue_priority[j - 1],
280 priv->wmm.queue_priority[j]);
285 mwifiex_wmm_queue_priorities_tid(priv);
289 * This function evaluates whether or not an AC is to be downgraded.
291 * In case the AC is not enabled, the highest AC is returned that is
292 * enabled and does not require admission control.
294 static enum mwifiex_wmm_ac_e
295 mwifiex_wmm_eval_downgrade_ac(struct mwifiex_private *priv,
296 enum mwifiex_wmm_ac_e eval_ac)
299 enum mwifiex_wmm_ac_e ret_ac;
300 struct mwifiex_wmm_ac_status *ac_status;
302 ac_status = &priv->wmm.ac_status[eval_ac];
304 if (!ac_status->disabled)
305 /* Okay to use this AC, its enabled */
308 /* Setup a default return value of the lowest priority */
312 * Find the highest AC that is enabled and does not require
313 * admission control. The spec disallows downgrading to an AC,
314 * which is enabled due to a completed admission control.
315 * Unadmitted traffic is not to be sent on an AC with admitted
318 for (down_ac = WMM_AC_BK; down_ac < eval_ac; down_ac++) {
319 ac_status = &priv->wmm.ac_status[down_ac];
321 if (!ac_status->disabled && !ac_status->flow_required)
322 /* AC is enabled and does not require admission
324 ret_ac = (enum mwifiex_wmm_ac_e) down_ac;
331 * This function downgrades WMM priority queue.
334 mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private *priv)
338 mwifiex_dbg(priv->adapter, INFO, "info: WMM: AC Priorities:\t"
339 "BK(0), BE(1), VI(2), VO(3)\n");
341 if (!priv->wmm_enabled) {
342 /* WMM is not enabled, default priorities */
343 for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++)
344 priv->wmm.ac_down_graded_vals[ac_val] =
345 (enum mwifiex_wmm_ac_e) ac_val;
347 for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++) {
348 priv->wmm.ac_down_graded_vals[ac_val]
349 = mwifiex_wmm_eval_downgrade_ac(priv,
350 (enum mwifiex_wmm_ac_e) ac_val);
351 mwifiex_dbg(priv->adapter, INFO,
352 "info: WMM: AC PRIO %d maps to %d\n",
354 priv->wmm.ac_down_graded_vals[ac_val]);
360 * This function converts the IP TOS field to an WMM AC
363 static enum mwifiex_wmm_ac_e
364 mwifiex_wmm_convert_tos_to_ac(struct mwifiex_adapter *adapter, u32 tos)
366 /* Map of TOS UP values to WMM AC */
367 const enum mwifiex_wmm_ac_e tos_to_ac[] = { WMM_AC_BE,
377 if (tos >= ARRAY_SIZE(tos_to_ac))
380 return tos_to_ac[tos];
384 * This function evaluates a given TID and downgrades it to a lower
385 * TID if the WMM Parameter IE received from the AP indicates that the
386 * AP is disabled (due to call admission control (ACM bit). Mapping
387 * of TID to AC is taken care of internally.
389 u8 mwifiex_wmm_downgrade_tid(struct mwifiex_private *priv, u32 tid)
391 enum mwifiex_wmm_ac_e ac, ac_down;
394 ac = mwifiex_wmm_convert_tos_to_ac(priv->adapter, tid);
395 ac_down = priv->wmm.ac_down_graded_vals[ac];
397 /* Send the index to tid array, picking from the array will be
398 * taken care by dequeuing function
400 new_tid = ac_to_tid[ac_down][tid % 2];
406 * This function initializes the WMM state information and the
407 * WMM data path queues.
410 mwifiex_wmm_init(struct mwifiex_adapter *adapter)
413 struct mwifiex_private *priv;
415 for (j = 0; j < adapter->priv_num; ++j) {
416 priv = adapter->priv[j];
420 for (i = 0; i < MAX_NUM_TID; ++i) {
421 if (!disable_tx_amsdu &&
422 adapter->tx_buf_size > MWIFIEX_TX_DATA_BUF_SIZE_2K)
423 priv->aggr_prio_tbl[i].amsdu =
424 priv->tos_to_tid_inv[i];
426 priv->aggr_prio_tbl[i].amsdu =
427 BA_STREAM_NOT_ALLOWED;
428 priv->aggr_prio_tbl[i].ampdu_ap =
429 priv->tos_to_tid_inv[i];
430 priv->aggr_prio_tbl[i].ampdu_user =
431 priv->tos_to_tid_inv[i];
434 priv->aggr_prio_tbl[6].amsdu
435 = priv->aggr_prio_tbl[6].ampdu_ap
436 = priv->aggr_prio_tbl[6].ampdu_user
437 = BA_STREAM_NOT_ALLOWED;
439 priv->aggr_prio_tbl[7].amsdu = priv->aggr_prio_tbl[7].ampdu_ap
440 = priv->aggr_prio_tbl[7].ampdu_user
441 = BA_STREAM_NOT_ALLOWED;
443 mwifiex_set_ba_params(priv);
444 mwifiex_reset_11n_rx_seq_num(priv);
446 atomic_set(&priv->wmm.tx_pkts_queued, 0);
447 atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
452 * This function checks if WMM Tx queue is empty.
455 mwifiex_wmm_lists_empty(struct mwifiex_adapter *adapter)
458 struct mwifiex_private *priv;
460 for (i = 0; i < adapter->priv_num; ++i) {
461 priv = adapter->priv[i];
462 if (priv && atomic_read(&priv->wmm.tx_pkts_queued))
470 * This function deletes all packets in an RA list node.
472 * The packet sent completion callback handler are called with
473 * status failure, after they are dequeued to ensure proper
474 * cleanup. The RA list node itself is freed at the end.
477 mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private *priv,
478 struct mwifiex_ra_list_tbl *ra_list)
480 struct mwifiex_adapter *adapter = priv->adapter;
481 struct sk_buff *skb, *tmp;
483 skb_queue_walk_safe(&ra_list->skb_head, skb, tmp)
484 mwifiex_write_data_complete(adapter, skb, 0, -1);
488 * This function deletes all packets in an RA list.
490 * Each nodes in the RA list are freed individually first, and then
491 * the RA list itself is freed.
494 mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private *priv,
495 struct list_head *ra_list_head)
497 struct mwifiex_ra_list_tbl *ra_list;
499 list_for_each_entry(ra_list, ra_list_head, list)
500 mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list);
504 * This function deletes all packets in all RA lists.
506 static void mwifiex_wmm_cleanup_queues(struct mwifiex_private *priv)
510 for (i = 0; i < MAX_NUM_TID; i++)
511 mwifiex_wmm_del_pkts_in_ralist(priv, &priv->wmm.tid_tbl_ptr[i].
514 atomic_set(&priv->wmm.tx_pkts_queued, 0);
515 atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
519 * This function deletes all route addresses from all RA lists.
521 static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private *priv)
523 struct mwifiex_ra_list_tbl *ra_list, *tmp_node;
526 for (i = 0; i < MAX_NUM_TID; ++i) {
527 mwifiex_dbg(priv->adapter, INFO,
528 "info: ra_list: freeing buf for tid %d\n", i);
529 list_for_each_entry_safe(ra_list, tmp_node,
530 &priv->wmm.tid_tbl_ptr[i].ra_list,
532 list_del(&ra_list->list);
536 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[i].ra_list);
540 static int mwifiex_free_ack_frame(int id, void *p, void *data)
542 pr_warn("Have pending ack frames!\n");
548 * This function cleans up the Tx and Rx queues.
551 * - All packets in RA lists
552 * - All entries in Rx reorder table
553 * - All entries in Tx BA stream table
554 * - MPA buffer (if required)
558 mwifiex_clean_txrx(struct mwifiex_private *priv)
561 struct sk_buff *skb, *tmp;
563 mwifiex_11n_cleanup_reorder_tbl(priv);
564 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
566 mwifiex_wmm_cleanup_queues(priv);
567 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
569 if (priv->adapter->if_ops.cleanup_mpa_buf)
570 priv->adapter->if_ops.cleanup_mpa_buf(priv->adapter);
572 mwifiex_wmm_delete_all_ralist(priv);
573 memcpy(tos_to_tid, ac_to_tid, sizeof(tos_to_tid));
575 if (priv->adapter->if_ops.clean_pcie_ring &&
576 !priv->adapter->surprise_removed)
577 priv->adapter->if_ops.clean_pcie_ring(priv->adapter);
578 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
580 skb_queue_walk_safe(&priv->tdls_txq, skb, tmp)
581 mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
583 idr_for_each(&priv->ack_status_frames, mwifiex_free_ack_frame, NULL);
584 idr_destroy(&priv->ack_status_frames);
588 * This function retrieves a particular RA list node, matching with the
589 * given TID and RA address.
591 struct mwifiex_ra_list_tbl *
592 mwifiex_wmm_get_ralist_node(struct mwifiex_private *priv, u8 tid,
595 struct mwifiex_ra_list_tbl *ra_list;
597 list_for_each_entry(ra_list, &priv->wmm.tid_tbl_ptr[tid].ra_list,
599 if (!memcmp(ra_list->ra, ra_addr, ETH_ALEN))
607 * This function retrieves an RA list node for a given TID and
610 * If no such node is found, a new node is added first and then
613 struct mwifiex_ra_list_tbl *
614 mwifiex_wmm_get_queue_raptr(struct mwifiex_private *priv, u8 tid,
617 struct mwifiex_ra_list_tbl *ra_list;
619 ra_list = mwifiex_wmm_get_ralist_node(priv, tid, ra_addr);
622 mwifiex_ralist_add(priv, ra_addr);
624 return mwifiex_wmm_get_ralist_node(priv, tid, ra_addr);
628 * This function deletes RA list nodes for given mac for all TIDs.
629 * Function also decrements TX pending count accordingly.
632 mwifiex_wmm_del_peer_ra_list(struct mwifiex_private *priv, const u8 *ra_addr)
634 struct mwifiex_ra_list_tbl *ra_list;
638 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
640 for (i = 0; i < MAX_NUM_TID; ++i) {
641 ra_list = mwifiex_wmm_get_ralist_node(priv, i, ra_addr);
645 mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list);
646 atomic_sub(ra_list->total_pkt_count, &priv->wmm.tx_pkts_queued);
647 list_del(&ra_list->list);
650 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
654 * This function checks if a particular RA list node exists in a given TID
658 mwifiex_is_ralist_valid(struct mwifiex_private *priv,
659 struct mwifiex_ra_list_tbl *ra_list, int ptr_index)
661 struct mwifiex_ra_list_tbl *rlist;
663 list_for_each_entry(rlist, &priv->wmm.tid_tbl_ptr[ptr_index].ra_list,
665 if (rlist == ra_list)
673 * This function adds a packet to WMM queue.
675 * In disconnected state the packet is immediately dropped and the
676 * packet send completion callback is called with status failure.
678 * Otherwise, the correct RA list node is located and the packet
679 * is queued at the list tail.
682 mwifiex_wmm_add_buf_txqueue(struct mwifiex_private *priv,
685 struct mwifiex_adapter *adapter = priv->adapter;
687 struct mwifiex_ra_list_tbl *ra_list;
688 u8 ra[ETH_ALEN], tid_down;
690 struct list_head list_head;
691 int tdls_status = TDLS_NOT_SETUP;
692 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
693 struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb);
695 memcpy(ra, eth_hdr->h_dest, ETH_ALEN);
697 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
698 ISSUPP_TDLS_ENABLED(adapter->fw_cap_info)) {
699 if (ntohs(eth_hdr->h_proto) == ETH_P_TDLS)
700 mwifiex_dbg(adapter, DATA,
701 "TDLS setup packet for %pM.\t"
702 "Don't block\n", ra);
703 else if (memcmp(priv->cfg_bssid, ra, ETH_ALEN))
704 tdls_status = mwifiex_get_tdls_link_status(priv, ra);
707 if (!priv->media_connected && !mwifiex_is_skb_mgmt_frame(skb)) {
708 mwifiex_dbg(adapter, DATA, "data: drop packet in disconnect\n");
709 mwifiex_write_data_complete(adapter, skb, 0, -1);
715 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
717 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
719 /* In case of infra as we have already created the list during
720 association we just don't have to call get_queue_raptr, we will
721 have only 1 raptr for a tid in case of infra */
722 if (!mwifiex_queuing_ra_based(priv) &&
723 !mwifiex_is_skb_mgmt_frame(skb)) {
724 switch (tdls_status) {
725 case TDLS_SETUP_COMPLETE:
726 ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down,
728 tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
730 case TDLS_SETUP_INPROGRESS:
731 skb_queue_tail(&priv->tdls_txq, skb);
732 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
736 list_head = priv->wmm.tid_tbl_ptr[tid_down].ra_list;
737 if (!list_empty(&list_head))
738 ra_list = list_first_entry(
739 &list_head, struct mwifiex_ra_list_tbl,
746 memcpy(ra, skb->data, ETH_ALEN);
747 if (ra[0] & 0x01 || mwifiex_is_skb_mgmt_frame(skb))
748 eth_broadcast_addr(ra);
749 ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down, ra);
753 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
754 mwifiex_write_data_complete(adapter, skb, 0, -1);
758 skb_queue_tail(&ra_list->skb_head, skb);
760 ra_list->ba_pkt_count++;
761 ra_list->total_pkt_count++;
763 if (atomic_read(&priv->wmm.highest_queued_prio) <
764 priv->tos_to_tid_inv[tid_down])
765 atomic_set(&priv->wmm.highest_queued_prio,
766 priv->tos_to_tid_inv[tid_down]);
768 atomic_inc(&priv->wmm.tx_pkts_queued);
770 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
774 * This function processes the get WMM status command response from firmware.
776 * The response may contain multiple TLVs -
777 * - AC Queue status TLVs
778 * - Current WMM Parameter IE TLV
779 * - Admission Control action frame TLVs
781 * This function parses the TLVs and then calls further specific functions
782 * to process any changes in the queue prioritize or state.
784 int mwifiex_ret_wmm_get_status(struct mwifiex_private *priv,
785 const struct host_cmd_ds_command *resp)
787 u8 *curr = (u8 *) &resp->params.get_wmm_status;
788 uint16_t resp_len = le16_to_cpu(resp->size), tlv_len;
789 int mask = IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK;
792 struct mwifiex_ie_types_data *tlv_hdr;
793 struct mwifiex_ie_types_wmm_queue_status *tlv_wmm_qstatus;
794 struct ieee_types_wmm_parameter *wmm_param_ie = NULL;
795 struct mwifiex_wmm_ac_status *ac_status;
797 mwifiex_dbg(priv->adapter, INFO,
798 "info: WMM: WMM_GET_STATUS cmdresp received: %d\n",
801 while ((resp_len >= sizeof(tlv_hdr->header)) && valid) {
802 tlv_hdr = (struct mwifiex_ie_types_data *) curr;
803 tlv_len = le16_to_cpu(tlv_hdr->header.len);
805 if (resp_len < tlv_len + sizeof(tlv_hdr->header))
808 switch (le16_to_cpu(tlv_hdr->header.type)) {
809 case TLV_TYPE_WMMQSTATUS:
811 (struct mwifiex_ie_types_wmm_queue_status *)
813 mwifiex_dbg(priv->adapter, CMD,
814 "info: CMD_RESP: WMM_GET_STATUS:\t"
815 "QSTATUS TLV: %d, %d, %d\n",
816 tlv_wmm_qstatus->queue_index,
817 tlv_wmm_qstatus->flow_required,
818 tlv_wmm_qstatus->disabled);
820 ac_status = &priv->wmm.ac_status[tlv_wmm_qstatus->
822 ac_status->disabled = tlv_wmm_qstatus->disabled;
823 ac_status->flow_required =
824 tlv_wmm_qstatus->flow_required;
825 ac_status->flow_created = tlv_wmm_qstatus->flow_created;
828 case WLAN_EID_VENDOR_SPECIFIC:
830 * Point the regular IEEE IE 2 bytes into the Marvell IE
831 * and setup the IEEE IE type and length byte fields
835 (struct ieee_types_wmm_parameter *) (curr +
837 wmm_param_ie->vend_hdr.len = (u8) tlv_len;
838 wmm_param_ie->vend_hdr.element_id =
839 WLAN_EID_VENDOR_SPECIFIC;
841 mwifiex_dbg(priv->adapter, CMD,
842 "info: CMD_RESP: WMM_GET_STATUS:\t"
843 "WMM Parameter Set Count: %d\n",
844 wmm_param_ie->qos_info_bitmap & mask);
846 memcpy((u8 *) &priv->curr_bss_params.bss_descriptor.
847 wmm_ie, wmm_param_ie,
848 wmm_param_ie->vend_hdr.len + 2);
857 curr += (tlv_len + sizeof(tlv_hdr->header));
858 resp_len -= (tlv_len + sizeof(tlv_hdr->header));
861 mwifiex_wmm_setup_queue_priorities(priv, wmm_param_ie);
862 mwifiex_wmm_setup_ac_downgrade(priv);
868 * Callback handler from the command module to allow insertion of a WMM TLV.
870 * If the BSS we are associating to supports WMM, this function adds the
871 * required WMM Information IE to the association request command buffer in
872 * the form of a Marvell extended IEEE IE.
875 mwifiex_wmm_process_association_req(struct mwifiex_private *priv,
877 struct ieee_types_wmm_parameter *wmm_ie,
878 struct ieee80211_ht_cap *ht_cap)
880 struct mwifiex_ie_types_wmm_param_set *wmm_tlv;
892 mwifiex_dbg(priv->adapter, INFO,
893 "info: WMM: process assoc req: bss->wmm_ie=%#x\n",
894 wmm_ie->vend_hdr.element_id);
896 if ((priv->wmm_required ||
897 (ht_cap && (priv->adapter->config_bands & BAND_GN ||
898 priv->adapter->config_bands & BAND_AN))) &&
899 wmm_ie->vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC) {
900 wmm_tlv = (struct mwifiex_ie_types_wmm_param_set *) *assoc_buf;
901 wmm_tlv->header.type = cpu_to_le16((u16) wmm_info_ie[0]);
902 wmm_tlv->header.len = cpu_to_le16((u16) wmm_info_ie[1]);
903 memcpy(wmm_tlv->wmm_ie, &wmm_info_ie[2],
904 le16_to_cpu(wmm_tlv->header.len));
905 if (wmm_ie->qos_info_bitmap & IEEE80211_WMM_IE_AP_QOSINFO_UAPSD)
906 memcpy((u8 *) (wmm_tlv->wmm_ie
907 + le16_to_cpu(wmm_tlv->header.len)
908 - sizeof(priv->wmm_qosinfo)),
909 &priv->wmm_qosinfo, sizeof(priv->wmm_qosinfo));
911 ret_len = sizeof(wmm_tlv->header)
912 + le16_to_cpu(wmm_tlv->header.len);
914 *assoc_buf += ret_len;
921 * This function computes the time delay in the driver queues for a
924 * When the packet is received at the OS/Driver interface, the current
925 * time is set in the packet structure. The difference between the present
926 * time and that received time is computed in this function and limited
927 * based on pre-compiled limits in the driver.
930 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private *priv,
931 const struct sk_buff *skb)
933 u32 queue_delay = ktime_to_ms(net_timedelta(skb->tstamp));
937 * Queue delay is passed as a uint8 in units of 2ms (ms shifted
938 * by 1). Min value (other than 0) is therefore 2ms, max is 510ms.
940 * Pass max value if queue_delay is beyond the uint8 range
942 ret_val = (u8) (min(queue_delay, priv->wmm.drv_pkt_delay_max) >> 1);
944 mwifiex_dbg(priv->adapter, DATA, "data: WMM: Pkt Delay: %d ms,\t"
945 "%d ms sent to FW\n", queue_delay, ret_val);
951 * This function retrieves the highest priority RA list table pointer.
953 static struct mwifiex_ra_list_tbl *
954 mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter *adapter,
955 struct mwifiex_private **priv, int *tid)
957 struct mwifiex_private *priv_tmp;
958 struct mwifiex_ra_list_tbl *ptr;
959 struct mwifiex_tid_tbl *tid_ptr;
961 unsigned long flags_ra;
964 /* check the BSS with highest priority first */
965 for (j = adapter->priv_num - 1; j >= 0; --j) {
966 /* iterate over BSS with the equal priority */
967 list_for_each_entry(adapter->bss_prio_tbl[j].bss_prio_cur,
968 &adapter->bss_prio_tbl[j].bss_prio_head,
971 priv_tmp = adapter->bss_prio_tbl[j].bss_prio_cur->priv;
973 if (atomic_read(&priv_tmp->wmm.tx_pkts_queued) == 0)
976 /* iterate over the WMM queues of the BSS */
977 hqp = &priv_tmp->wmm.highest_queued_prio;
978 for (i = atomic_read(hqp); i >= LOW_PRIO_TID; --i) {
980 spin_lock_irqsave(&priv_tmp->wmm.
981 ra_list_spinlock, flags_ra);
983 tid_ptr = &(priv_tmp)->wmm.
984 tid_tbl_ptr[tos_to_tid[i]];
986 /* iterate over receiver addresses */
987 list_for_each_entry(ptr, &tid_ptr->ra_list,
990 if (!skb_queue_empty(&ptr->skb_head))
991 /* holds both locks */
995 spin_unlock_irqrestore(&priv_tmp->wmm.
1006 /* holds ra_list_spinlock */
1007 if (atomic_read(hqp) > i)
1009 spin_unlock_irqrestore(&priv_tmp->wmm.ra_list_spinlock, flags_ra);
1012 *tid = tos_to_tid[i];
1017 /* This functions rotates ra and bss lists so packets are picked round robin.
1019 * After a packet is successfully transmitted, rotate the ra list, so the ra
1020 * next to the one transmitted, will come first in the list. This way we pick
1021 * the ra' in a round robin fashion. Same applies to bss nodes of equal
1024 * Function also increments wmm.packets_out counter.
1026 void mwifiex_rotate_priolists(struct mwifiex_private *priv,
1027 struct mwifiex_ra_list_tbl *ra,
1030 struct mwifiex_adapter *adapter = priv->adapter;
1031 struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl;
1032 struct mwifiex_tid_tbl *tid_ptr = &priv->wmm.tid_tbl_ptr[tid];
1033 unsigned long flags;
1035 spin_lock_irqsave(&tbl[priv->bss_priority].bss_prio_lock, flags);
1037 * dirty trick: we remove 'head' temporarily and reinsert it after
1038 * curr bss node. imagine list to stay fixed while head is moved
1040 list_move(&tbl[priv->bss_priority].bss_prio_head,
1041 &tbl[priv->bss_priority].bss_prio_cur->list);
1042 spin_unlock_irqrestore(&tbl[priv->bss_priority].bss_prio_lock, flags);
1044 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
1045 if (mwifiex_is_ralist_valid(priv, ra, tid)) {
1046 priv->wmm.packets_out[tid]++;
1048 list_move(&tid_ptr->ra_list, &ra->list);
1050 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
1054 * This function checks if 11n aggregation is possible.
1057 mwifiex_is_11n_aggragation_possible(struct mwifiex_private *priv,
1058 struct mwifiex_ra_list_tbl *ptr,
1061 int count = 0, total_size = 0;
1062 struct sk_buff *skb, *tmp;
1065 if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP && priv->ap_11n_enabled &&
1066 ptr->is_11n_enabled)
1067 max_amsdu_size = min_t(int, ptr->max_amsdu, max_buf_size);
1069 max_amsdu_size = max_buf_size;
1071 skb_queue_walk_safe(&ptr->skb_head, skb, tmp) {
1072 total_size += skb->len;
1073 if (total_size >= max_amsdu_size)
1075 if (++count >= MIN_NUM_AMSDU)
1083 * This function sends a single packet to firmware for transmission.
1086 mwifiex_send_single_packet(struct mwifiex_private *priv,
1087 struct mwifiex_ra_list_tbl *ptr, int ptr_index,
1088 unsigned long ra_list_flags)
1089 __releases(&priv->wmm.ra_list_spinlock)
1091 struct sk_buff *skb, *skb_next;
1092 struct mwifiex_tx_param tx_param;
1093 struct mwifiex_adapter *adapter = priv->adapter;
1094 struct mwifiex_txinfo *tx_info;
1096 if (skb_queue_empty(&ptr->skb_head)) {
1097 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1099 mwifiex_dbg(adapter, DATA, "data: nothing to send\n");
1103 skb = skb_dequeue(&ptr->skb_head);
1105 tx_info = MWIFIEX_SKB_TXCB(skb);
1106 mwifiex_dbg(adapter, DATA,
1107 "data: dequeuing the packet %p %p\n", ptr, skb);
1109 ptr->total_pkt_count--;
1111 if (!skb_queue_empty(&ptr->skb_head))
1112 skb_next = skb_peek(&ptr->skb_head);
1116 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags);
1118 tx_param.next_pkt_len = ((skb_next) ? skb_next->len +
1119 sizeof(struct txpd) : 0);
1121 if (mwifiex_process_tx(priv, skb, &tx_param) == -EBUSY) {
1122 /* Queue the packet back at the head */
1123 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
1125 if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
1126 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1128 mwifiex_write_data_complete(adapter, skb, 0, -1);
1132 skb_queue_tail(&ptr->skb_head, skb);
1134 ptr->total_pkt_count++;
1135 ptr->ba_pkt_count++;
1136 tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
1137 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1140 mwifiex_rotate_priolists(priv, ptr, ptr_index);
1141 atomic_dec(&priv->wmm.tx_pkts_queued);
1146 * This function checks if the first packet in the given RA list
1147 * is already processed or not.
1150 mwifiex_is_ptr_processed(struct mwifiex_private *priv,
1151 struct mwifiex_ra_list_tbl *ptr)
1153 struct sk_buff *skb;
1154 struct mwifiex_txinfo *tx_info;
1156 if (skb_queue_empty(&ptr->skb_head))
1159 skb = skb_peek(&ptr->skb_head);
1161 tx_info = MWIFIEX_SKB_TXCB(skb);
1162 if (tx_info->flags & MWIFIEX_BUF_FLAG_REQUEUED_PKT)
1169 * This function sends a single processed packet to firmware for
1173 mwifiex_send_processed_packet(struct mwifiex_private *priv,
1174 struct mwifiex_ra_list_tbl *ptr, int ptr_index,
1175 unsigned long ra_list_flags)
1176 __releases(&priv->wmm.ra_list_spinlock)
1178 struct mwifiex_tx_param tx_param;
1179 struct mwifiex_adapter *adapter = priv->adapter;
1181 struct sk_buff *skb, *skb_next;
1182 struct mwifiex_txinfo *tx_info;
1184 if (skb_queue_empty(&ptr->skb_head)) {
1185 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1190 skb = skb_dequeue(&ptr->skb_head);
1192 if (adapter->data_sent || adapter->tx_lock_flag) {
1193 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1195 skb_queue_tail(&adapter->tx_data_q, skb);
1196 atomic_inc(&adapter->tx_queued);
1200 if (!skb_queue_empty(&ptr->skb_head))
1201 skb_next = skb_peek(&ptr->skb_head);
1205 tx_info = MWIFIEX_SKB_TXCB(skb);
1207 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags);
1209 if (adapter->iface_type == MWIFIEX_USB) {
1210 adapter->data_sent = true;
1211 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_USB_EP_DATA,
1214 tx_param.next_pkt_len =
1215 ((skb_next) ? skb_next->len +
1216 sizeof(struct txpd) : 0);
1217 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
1223 mwifiex_dbg(adapter, ERROR, "data: -EBUSY is returned\n");
1224 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
1226 if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
1227 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1229 mwifiex_write_data_complete(adapter, skb, 0, -1);
1233 skb_queue_tail(&ptr->skb_head, skb);
1235 tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
1236 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1240 if (adapter->iface_type != MWIFIEX_PCIE)
1241 adapter->data_sent = false;
1242 mwifiex_dbg(adapter, ERROR, "host_to_card failed: %#x\n", ret);
1243 adapter->dbg.num_tx_host_to_card_failure++;
1244 mwifiex_write_data_complete(adapter, skb, 0, ret);
1247 if (adapter->iface_type != MWIFIEX_PCIE)
1248 adapter->data_sent = false;
1251 mwifiex_write_data_complete(adapter, skb, 0, ret);
1255 if (ret != -EBUSY) {
1256 mwifiex_rotate_priolists(priv, ptr, ptr_index);
1257 atomic_dec(&priv->wmm.tx_pkts_queued);
1262 * This function dequeues a packet from the highest priority list
1266 mwifiex_dequeue_tx_packet(struct mwifiex_adapter *adapter)
1268 struct mwifiex_ra_list_tbl *ptr;
1269 struct mwifiex_private *priv = NULL;
1272 int tid_del = 0, tid = 0;
1273 unsigned long flags;
1275 ptr = mwifiex_wmm_get_highest_priolist_ptr(adapter, &priv, &ptr_index);
1279 tid = mwifiex_get_tid(ptr);
1281 mwifiex_dbg(adapter, DATA, "data: tid=%d\n", tid);
1283 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
1284 if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
1285 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
1289 if (mwifiex_is_ptr_processed(priv, ptr)) {
1290 mwifiex_send_processed_packet(priv, ptr, ptr_index, flags);
1291 /* ra_list_spinlock has been freed in
1292 mwifiex_send_processed_packet() */
1296 if (!ptr->is_11n_enabled ||
1298 priv->wps.session_enable) {
1299 if (ptr->is_11n_enabled &&
1301 ptr->amsdu_in_ampdu &&
1302 mwifiex_is_amsdu_allowed(priv, tid) &&
1303 mwifiex_is_11n_aggragation_possible(priv, ptr,
1304 adapter->tx_buf_size))
1305 mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index, flags);
1306 /* ra_list_spinlock has been freed in
1307 * mwifiex_11n_aggregate_pkt()
1310 mwifiex_send_single_packet(priv, ptr, ptr_index, flags);
1311 /* ra_list_spinlock has been freed in
1312 * mwifiex_send_single_packet()
1315 if (mwifiex_is_ampdu_allowed(priv, ptr, tid) &&
1316 ptr->ba_pkt_count > ptr->ba_packet_thr) {
1317 if (mwifiex_space_avail_for_new_ba_stream(adapter)) {
1318 mwifiex_create_ba_tbl(priv, ptr->ra, tid,
1319 BA_SETUP_INPROGRESS);
1320 mwifiex_send_addba(priv, tid, ptr->ra);
1321 } else if (mwifiex_find_stream_to_delete
1322 (priv, tid, &tid_del, ra)) {
1323 mwifiex_create_ba_tbl(priv, ptr->ra, tid,
1324 BA_SETUP_INPROGRESS);
1325 mwifiex_send_delba(priv, tid_del, ra, 1);
1328 if (mwifiex_is_amsdu_allowed(priv, tid) &&
1329 mwifiex_is_11n_aggragation_possible(priv, ptr,
1330 adapter->tx_buf_size))
1331 mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index, flags);
1332 /* ra_list_spinlock has been freed in
1333 mwifiex_11n_aggregate_pkt() */
1335 mwifiex_send_single_packet(priv, ptr, ptr_index, flags);
1336 /* ra_list_spinlock has been freed in
1337 mwifiex_send_single_packet() */
1343 * This function transmits the highest priority packet awaiting in the
1347 mwifiex_wmm_process_tx(struct mwifiex_adapter *adapter)
1350 if (mwifiex_dequeue_tx_packet(adapter))
1352 if (adapter->iface_type != MWIFIEX_SDIO) {
1353 if (adapter->data_sent ||
1354 adapter->tx_lock_flag)
1357 if (atomic_read(&adapter->tx_queued) >=
1358 MWIFIEX_MAX_PKTS_TXQ)
1361 } while (!mwifiex_wmm_lists_empty(adapter));