diff options
Diffstat (limited to 'drivers/net/wireless/mwifiex/11n_rxreorder.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/11n_rxreorder.c | 910 |
1 files changed, 0 insertions, 910 deletions
diff --git a/drivers/net/wireless/mwifiex/11n_rxreorder.c b/drivers/net/wireless/mwifiex/11n_rxreorder.c deleted file mode 100644 index b3970a8c9e48..000000000000 --- a/drivers/net/wireless/mwifiex/11n_rxreorder.c +++ /dev/null @@ -1,910 +0,0 @@ -/* - * Marvell Wireless LAN device driver: 802.11n RX Re-ordering - * - * Copyright (C) 2011-2014, Marvell International Ltd. - * - * This software file (the "File") is distributed by Marvell International - * Ltd. under the terms of the GNU General Public License Version 2, June 1991 - * (the "License"). You may use, redistribute and/or modify this File in - * accordance with the terms and conditions of the License, a copy of which - * is available by writing to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the - * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. - * - * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE - * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE - * ARE EXPRESSLY DISCLAIMED. The License provides additional details about - * this warranty disclaimer. - */ - -#include "decl.h" -#include "ioctl.h" -#include "util.h" -#include "fw.h" -#include "main.h" -#include "wmm.h" -#include "11n.h" -#include "11n_rxreorder.h" - -/* This function will dispatch amsdu packet and forward it to kernel/upper - * layer. - */ -static int mwifiex_11n_dispatch_amsdu_pkt(struct mwifiex_private *priv, - struct sk_buff *skb) -{ - struct rxpd *local_rx_pd = (struct rxpd *)(skb->data); - int ret; - - if (le16_to_cpu(local_rx_pd->rx_pkt_type) == PKT_TYPE_AMSDU) { - struct sk_buff_head list; - struct sk_buff *rx_skb; - - __skb_queue_head_init(&list); - - skb_pull(skb, le16_to_cpu(local_rx_pd->rx_pkt_offset)); - skb_trim(skb, le16_to_cpu(local_rx_pd->rx_pkt_length)); - - ieee80211_amsdu_to_8023s(skb, &list, priv->curr_addr, - priv->wdev.iftype, 0, false); - - while (!skb_queue_empty(&list)) { - rx_skb = __skb_dequeue(&list); - ret = mwifiex_recv_packet(priv, rx_skb); - if (ret == -1) - mwifiex_dbg(priv->adapter, ERROR, - "Rx of A-MSDU failed"); - } - return 0; - } - - return -1; -} - -/* This function will process the rx packet and forward it to kernel/upper - * layer. - */ -static int mwifiex_11n_dispatch_pkt(struct mwifiex_private *priv, void *payload) -{ - int ret = mwifiex_11n_dispatch_amsdu_pkt(priv, payload); - - if (!ret) - return 0; - - if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) - return mwifiex_handle_uap_rx_forward(priv, payload); - - return mwifiex_process_rx_packet(priv, payload); -} - -/* - * This function dispatches all packets in the Rx reorder table until the - * start window. - * - * There could be holes in the buffer, which are skipped by the function. - * Since the buffer is linear, the function uses rotation to simulate - * circular buffer. - */ -static void -mwifiex_11n_dispatch_pkt_until_start_win(struct mwifiex_private *priv, - struct mwifiex_rx_reorder_tbl *tbl, - int start_win) -{ - int pkt_to_send, i; - void *rx_tmp_ptr; - unsigned long flags; - - pkt_to_send = (start_win > tbl->start_win) ? - min((start_win - tbl->start_win), tbl->win_size) : - tbl->win_size; - - for (i = 0; i < pkt_to_send; ++i) { - spin_lock_irqsave(&priv->rx_pkt_lock, flags); - rx_tmp_ptr = NULL; - if (tbl->rx_reorder_ptr[i]) { - rx_tmp_ptr = tbl->rx_reorder_ptr[i]; - tbl->rx_reorder_ptr[i] = NULL; - } - spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); - if (rx_tmp_ptr) - mwifiex_11n_dispatch_pkt(priv, rx_tmp_ptr); - } - - spin_lock_irqsave(&priv->rx_pkt_lock, flags); - /* - * We don't have a circular buffer, hence use rotation to simulate - * circular buffer - */ - for (i = 0; i < tbl->win_size - pkt_to_send; ++i) { - tbl->rx_reorder_ptr[i] = tbl->rx_reorder_ptr[pkt_to_send + i]; - tbl->rx_reorder_ptr[pkt_to_send + i] = NULL; - } - - tbl->start_win = start_win; - spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); -} - -/* - * This function dispatches all packets in the Rx reorder table until - * a hole is found. - * - * The start window is adjusted automatically when a hole is located. - * Since the buffer is linear, the function uses rotation to simulate - * circular buffer. - */ -static void -mwifiex_11n_scan_and_dispatch(struct mwifiex_private *priv, - struct mwifiex_rx_reorder_tbl *tbl) -{ - int i, j, xchg; - void *rx_tmp_ptr; - unsigned long flags; - - for (i = 0; i < tbl->win_size; ++i) { - spin_lock_irqsave(&priv->rx_pkt_lock, flags); - if (!tbl->rx_reorder_ptr[i]) { - spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); - break; - } - rx_tmp_ptr = tbl->rx_reorder_ptr[i]; - tbl->rx_reorder_ptr[i] = NULL; - spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); - mwifiex_11n_dispatch_pkt(priv, rx_tmp_ptr); - } - - spin_lock_irqsave(&priv->rx_pkt_lock, flags); - /* - * We don't have a circular buffer, hence use rotation to simulate - * circular buffer - */ - if (i > 0) { - xchg = tbl->win_size - i; - for (j = 0; j < xchg; ++j) { - tbl->rx_reorder_ptr[j] = tbl->rx_reorder_ptr[i + j]; - tbl->rx_reorder_ptr[i + j] = NULL; - } - } - tbl->start_win = (tbl->start_win + i) & (MAX_TID_VALUE - 1); - spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); -} - -/* - * This function deletes the Rx reorder table and frees the memory. - * - * The function stops the associated timer and dispatches all the - * pending packets in the Rx reorder table before deletion. - */ -static void -mwifiex_del_rx_reorder_entry(struct mwifiex_private *priv, - struct mwifiex_rx_reorder_tbl *tbl) -{ - unsigned long flags; - int start_win; - - if (!tbl) - return; - - spin_lock_irqsave(&priv->adapter->rx_proc_lock, flags); - priv->adapter->rx_locked = true; - if (priv->adapter->rx_processing) { - spin_unlock_irqrestore(&priv->adapter->rx_proc_lock, flags); - flush_workqueue(priv->adapter->rx_workqueue); - } else { - spin_unlock_irqrestore(&priv->adapter->rx_proc_lock, flags); - } - - start_win = (tbl->start_win + tbl->win_size) & (MAX_TID_VALUE - 1); - mwifiex_11n_dispatch_pkt_until_start_win(priv, tbl, start_win); - - del_timer_sync(&tbl->timer_context.timer); - tbl->timer_context.timer_is_set = false; - - spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); - list_del(&tbl->list); - spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); - - kfree(tbl->rx_reorder_ptr); - kfree(tbl); - - spin_lock_irqsave(&priv->adapter->rx_proc_lock, flags); - priv->adapter->rx_locked = false; - spin_unlock_irqrestore(&priv->adapter->rx_proc_lock, flags); - -} - -/* - * This function returns the pointer to an entry in Rx reordering - * table which matches the given TA/TID pair. - */ -struct mwifiex_rx_reorder_tbl * -mwifiex_11n_get_rx_reorder_tbl(struct mwifiex_private *priv, int tid, u8 *ta) -{ - struct mwifiex_rx_reorder_tbl *tbl; - unsigned long flags; - - spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); - list_for_each_entry(tbl, &priv->rx_reorder_tbl_ptr, list) { - if (!memcmp(tbl->ta, ta, ETH_ALEN) && tbl->tid == tid) { - spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, - flags); - return tbl; - } - } - spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); - - return NULL; -} - -/* This function retrieves the pointer to an entry in Rx reordering - * table which matches the given TA and deletes it. - */ -void mwifiex_11n_del_rx_reorder_tbl_by_ta(struct mwifiex_private *priv, u8 *ta) -{ - struct mwifiex_rx_reorder_tbl *tbl, *tmp; - unsigned long flags; - - if (!ta) - return; - - spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); - list_for_each_entry_safe(tbl, tmp, &priv->rx_reorder_tbl_ptr, list) { - if (!memcmp(tbl->ta, ta, ETH_ALEN)) { - spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, - flags); - mwifiex_del_rx_reorder_entry(priv, tbl); - spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); - } - } - spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); - - return; -} - -/* - * This function finds the last sequence number used in the packets - * buffered in Rx reordering table. - */ -static int -mwifiex_11n_find_last_seq_num(struct reorder_tmr_cnxt *ctx) -{ - struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr = ctx->ptr; - struct mwifiex_private *priv = ctx->priv; - unsigned long flags; - int i; - - spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); - for (i = rx_reorder_tbl_ptr->win_size - 1; i >= 0; --i) { - if (rx_reorder_tbl_ptr->rx_reorder_ptr[i]) { - spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, - flags); - return i; - } - } - spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); - - return -1; -} - -/* - * This function flushes all the packets in Rx reordering table. - * - * The function checks if any packets are currently buffered in the - * table or not. In case there are packets available, it dispatches - * them and then dumps the Rx reordering table. - */ -static void -mwifiex_flush_data(unsigned long context) -{ - struct reorder_tmr_cnxt *ctx = - (struct reorder_tmr_cnxt *) context; - int start_win, seq_num; - - ctx->timer_is_set = false; - seq_num = mwifiex_11n_find_last_seq_num(ctx); - - if (seq_num < 0) - return; - - mwifiex_dbg(ctx->priv->adapter, INFO, "info: flush data %d\n", seq_num); - start_win = (ctx->ptr->start_win + seq_num + 1) & (MAX_TID_VALUE - 1); - mwifiex_11n_dispatch_pkt_until_start_win(ctx->priv, ctx->ptr, - start_win); -} - -/* - * This function creates an entry in Rx reordering table for the - * given TA/TID. - * - * The function also initializes the entry with sequence number, window - * size as well as initializes the timer. - * - * If the received TA/TID pair is already present, all the packets are - * dispatched and the window size is moved until the SSN. - */ -static void -mwifiex_11n_create_rx_reorder_tbl(struct mwifiex_private *priv, u8 *ta, - int tid, int win_size, int seq_num) -{ - int i; - struct mwifiex_rx_reorder_tbl *tbl, *new_node; - u16 last_seq = 0; - unsigned long flags; - struct mwifiex_sta_node *node; - - /* - * If we get a TID, ta pair which is already present dispatch all the - * the packets and move the window size until the ssn - */ - tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, ta); - if (tbl) { - mwifiex_11n_dispatch_pkt_until_start_win(priv, tbl, seq_num); - return; - } - /* if !tbl then create one */ - new_node = kzalloc(sizeof(struct mwifiex_rx_reorder_tbl), GFP_KERNEL); - if (!new_node) - return; - - INIT_LIST_HEAD(&new_node->list); - new_node->tid = tid; - memcpy(new_node->ta, ta, ETH_ALEN); - new_node->start_win = seq_num; - new_node->init_win = seq_num; - new_node->flags = 0; - - spin_lock_irqsave(&priv->sta_list_spinlock, flags); - if (mwifiex_queuing_ra_based(priv)) { - if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) { - node = mwifiex_get_sta_entry(priv, ta); - if (node) - last_seq = node->rx_seq[tid]; - } - } else { - node = mwifiex_get_sta_entry(priv, ta); - if (node) - last_seq = node->rx_seq[tid]; - else - last_seq = priv->rx_seq[tid]; - } - spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); - - mwifiex_dbg(priv->adapter, INFO, - "info: last_seq=%d start_win=%d\n", - last_seq, new_node->start_win); - - if (last_seq != MWIFIEX_DEF_11N_RX_SEQ_NUM && - last_seq >= new_node->start_win) { - new_node->start_win = last_seq + 1; - new_node->flags |= RXREOR_INIT_WINDOW_SHIFT; - } - - new_node->win_size = win_size; - - new_node->rx_reorder_ptr = kzalloc(sizeof(void *) * win_size, - GFP_KERNEL); - if (!new_node->rx_reorder_ptr) { - kfree((u8 *) new_node); - mwifiex_dbg(priv->adapter, ERROR, - "%s: failed to alloc reorder_ptr\n", __func__); - return; - } - - new_node->timer_context.ptr = new_node; - new_node->timer_context.priv = priv; - new_node->timer_context.timer_is_set = false; - - setup_timer(&new_node->timer_context.timer, mwifiex_flush_data, - (unsigned long)&new_node->timer_context); - - for (i = 0; i < win_size; ++i) - new_node->rx_reorder_ptr[i] = NULL; - - spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); - list_add_tail(&new_node->list, &priv->rx_reorder_tbl_ptr); - spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); -} - -static void -mwifiex_11n_rxreorder_timer_restart(struct mwifiex_rx_reorder_tbl *tbl) -{ - u32 min_flush_time; - - if (tbl->win_size >= MWIFIEX_BA_WIN_SIZE_32) - min_flush_time = MIN_FLUSH_TIMER_15_MS; - else - min_flush_time = MIN_FLUSH_TIMER_MS; - - mod_timer(&tbl->timer_context.timer, - jiffies + msecs_to_jiffies(min_flush_time * tbl->win_size)); - - tbl->timer_context.timer_is_set = true; -} - -/* - * This function prepares command for adding a BA request. - * - * Preparation includes - - * - Setting command ID and proper size - * - Setting add BA request buffer - * - Ensuring correct endian-ness - */ -int mwifiex_cmd_11n_addba_req(struct host_cmd_ds_command *cmd, void *data_buf) -{ - struct host_cmd_ds_11n_addba_req *add_ba_req = &cmd->params.add_ba_req; - - cmd->command = cpu_to_le16(HostCmd_CMD_11N_ADDBA_REQ); - cmd->size = cpu_to_le16(sizeof(*add_ba_req) + S_DS_GEN); - memcpy(add_ba_req, data_buf, sizeof(*add_ba_req)); - - return 0; -} - -/* - * This function prepares command for adding a BA response. - * - * Preparation includes - - * - Setting command ID and proper size - * - Setting add BA response buffer - * - Ensuring correct endian-ness - */ -int mwifiex_cmd_11n_addba_rsp_gen(struct mwifiex_private *priv, - struct host_cmd_ds_command *cmd, - struct host_cmd_ds_11n_addba_req - *cmd_addba_req) -{ - struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &cmd->params.add_ba_rsp; - struct mwifiex_sta_node *sta_ptr; - u32 rx_win_size = priv->add_ba_param.rx_win_size; - u8 tid; - int win_size; - unsigned long flags; - uint16_t block_ack_param_set; - - if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) && - ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && - priv->adapter->is_hw_11ac_capable && - memcmp(priv->cfg_bssid, cmd_addba_req->peer_mac_addr, ETH_ALEN)) { - spin_lock_irqsave(&priv->sta_list_spinlock, flags); - sta_ptr = mwifiex_get_sta_entry(priv, - cmd_addba_req->peer_mac_addr); - if (!sta_ptr) { - spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); - mwifiex_dbg(priv->adapter, ERROR, - "BA setup with unknown TDLS peer %pM!\n", - cmd_addba_req->peer_mac_addr); - return -1; - } - if (sta_ptr->is_11ac_enabled) - rx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_RXWINSIZE; - spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); - } - - cmd->command = cpu_to_le16(HostCmd_CMD_11N_ADDBA_RSP); - cmd->size = cpu_to_le16(sizeof(*add_ba_rsp) + S_DS_GEN); - - memcpy(add_ba_rsp->peer_mac_addr, cmd_addba_req->peer_mac_addr, - ETH_ALEN); - add_ba_rsp->dialog_token = cmd_addba_req->dialog_token; - add_ba_rsp->block_ack_tmo = cmd_addba_req->block_ack_tmo; - add_ba_rsp->ssn = cmd_addba_req->ssn; - - block_ack_param_set = le16_to_cpu(cmd_addba_req->block_ack_param_set); - tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK) - >> BLOCKACKPARAM_TID_POS; - add_ba_rsp->status_code = cpu_to_le16(ADDBA_RSP_STATUS_ACCEPT); - block_ack_param_set &= ~IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK; - - /* If we don't support AMSDU inside AMPDU, reset the bit */ - if (!priv->add_ba_param.rx_amsdu || - (priv->aggr_prio_tbl[tid].amsdu == BA_STREAM_NOT_ALLOWED)) - block_ack_param_set &= ~BLOCKACKPARAM_AMSDU_SUPP_MASK; - block_ack_param_set |= rx_win_size << BLOCKACKPARAM_WINSIZE_POS; - add_ba_rsp->block_ack_param_set = cpu_to_le16(block_ack_param_set); - win_size = (le16_to_cpu(add_ba_rsp->block_ack_param_set) - & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) - >> BLOCKACKPARAM_WINSIZE_POS; - cmd_addba_req->block_ack_param_set = cpu_to_le16(block_ack_param_set); - - mwifiex_11n_create_rx_reorder_tbl(priv, cmd_addba_req->peer_mac_addr, - tid, win_size, - le16_to_cpu(cmd_addba_req->ssn)); - return 0; -} - -/* - * This function prepares command for deleting a BA request. - * - * Preparation includes - - * - Setting command ID and proper size - * - Setting del BA request buffer - * - Ensuring correct endian-ness - */ -int mwifiex_cmd_11n_delba(struct host_cmd_ds_command *cmd, void *data_buf) -{ - struct host_cmd_ds_11n_delba *del_ba = &cmd->params.del_ba; - - cmd->command = cpu_to_le16(HostCmd_CMD_11N_DELBA); - cmd->size = cpu_to_le16(sizeof(*del_ba) + S_DS_GEN); - memcpy(del_ba, data_buf, sizeof(*del_ba)); - - return 0; -} - -/* - * This function identifies if Rx reordering is needed for a received packet. - * - * In case reordering is required, the function will do the reordering - * before sending it to kernel. - * - * The Rx reorder table is checked first with the received TID/TA pair. If - * not found, the received packet is dispatched immediately. But if found, - * the packet is reordered and all the packets in the updated Rx reordering - * table is dispatched until a hole is found. - * - * For sequence number less than the starting window, the packet is dropped. - */ -int mwifiex_11n_rx_reorder_pkt(struct mwifiex_private *priv, - u16 seq_num, u16 tid, - u8 *ta, u8 pkt_type, void *payload) -{ - struct mwifiex_rx_reorder_tbl *tbl; - int prev_start_win, start_win, end_win, win_size; - u16 pkt_index; - bool init_window_shift = false; - int ret = 0; - - tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, ta); - if (!tbl) { - if (pkt_type != PKT_TYPE_BAR) - mwifiex_11n_dispatch_pkt(priv, payload); - return ret; - } - - if ((pkt_type == PKT_TYPE_AMSDU) && !tbl->amsdu) { - mwifiex_11n_dispatch_pkt(priv, payload); - return ret; - } - - start_win = tbl->start_win; - prev_start_win = start_win; - win_size = tbl->win_size; - end_win = ((start_win + win_size) - 1) & (MAX_TID_VALUE - 1); - if (tbl->flags & RXREOR_INIT_WINDOW_SHIFT) { - init_window_shift = true; - tbl->flags &= ~RXREOR_INIT_WINDOW_SHIFT; - } - - if (tbl->flags & RXREOR_FORCE_NO_DROP) { - mwifiex_dbg(priv->adapter, INFO, - "RXREOR_FORCE_NO_DROP when HS is activated\n"); - tbl->flags &= ~RXREOR_FORCE_NO_DROP; - } else if (init_window_shift && seq_num < start_win && - seq_num >= tbl->init_win) { - mwifiex_dbg(priv->adapter, INFO, - "Sender TID sequence number reset %d->%d for SSN %d\n", - start_win, seq_num, tbl->init_win); - tbl->start_win = start_win = seq_num; - end_win = ((start_win + win_size) - 1) & (MAX_TID_VALUE - 1); - } else { - /* - * If seq_num is less then starting win then ignore and drop - * the packet - */ - if ((start_win + TWOPOW11) > (MAX_TID_VALUE - 1)) { - if (seq_num >= ((start_win + TWOPOW11) & - (MAX_TID_VALUE - 1)) && - seq_num < start_win) { - ret = -1; - goto done; - } - } else if ((seq_num < start_win) || - (seq_num >= (start_win + TWOPOW11))) { - ret = -1; - goto done; - } - } - - /* - * If this packet is a BAR we adjust seq_num as - * WinStart = seq_num - */ - if (pkt_type == PKT_TYPE_BAR) - seq_num = ((seq_num + win_size) - 1) & (MAX_TID_VALUE - 1); - - if (((end_win < start_win) && - (seq_num < start_win) && (seq_num > end_win)) || - ((end_win > start_win) && ((seq_num > end_win) || - (seq_num < start_win)))) { - end_win = seq_num; - if (((end_win - win_size) + 1) >= 0) - start_win = (end_win - win_size) + 1; - else - start_win = (MAX_TID_VALUE - (win_size - end_win)) + 1; - mwifiex_11n_dispatch_pkt_until_start_win(priv, tbl, start_win); - } - - if (pkt_type != PKT_TYPE_BAR) { - if (seq_num >= start_win) - pkt_index = seq_num - start_win; - else - pkt_index = (seq_num+MAX_TID_VALUE) - start_win; - - if (tbl->rx_reorder_ptr[pkt_index]) { - ret = -1; - goto done; - } - - tbl->rx_reorder_ptr[pkt_index] = payload; - } - - /* - * Dispatch all packets sequentially from start_win until a - * hole is found and adjust the start_win appropriately - */ - mwifiex_11n_scan_and_dispatch(priv, tbl); - -done: - if (!tbl->timer_context.timer_is_set || - prev_start_win != tbl->start_win) - mwifiex_11n_rxreorder_timer_restart(tbl); - return ret; -} - -/* - * This function deletes an entry for a given TID/TA pair. - * - * The TID/TA are taken from del BA event body. - */ -void -mwifiex_del_ba_tbl(struct mwifiex_private *priv, int tid, u8 *peer_mac, - u8 type, int initiator) -{ - struct mwifiex_rx_reorder_tbl *tbl; - struct mwifiex_tx_ba_stream_tbl *ptx_tbl; - struct mwifiex_ra_list_tbl *ra_list; - u8 cleanup_rx_reorder_tbl; - unsigned long flags; - int tid_down; - - if (type == TYPE_DELBA_RECEIVE) - cleanup_rx_reorder_tbl = (initiator) ? true : false; - else - cleanup_rx_reorder_tbl = (initiator) ? false : true; - - mwifiex_dbg(priv->adapter, EVENT, "event: DELBA: %pM tid=%d initiator=%d\n", - peer_mac, tid, initiator); - - if (cleanup_rx_reorder_tbl) { - tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, - peer_mac); - if (!tbl) { - mwifiex_dbg(priv->adapter, EVENT, - "event: TID, TA not found in table\n"); - return; - } - mwifiex_del_rx_reorder_entry(priv, tbl); - } else { - ptx_tbl = mwifiex_get_ba_tbl(priv, tid, peer_mac); - if (!ptx_tbl) { - mwifiex_dbg(priv->adapter, EVENT, - "event: TID, RA not found in table\n"); - return; - } - - tid_down = mwifiex_wmm_downgrade_tid(priv, tid); - ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, peer_mac); - if (ra_list) { - ra_list->amsdu_in_ampdu = false; - ra_list->ba_status = BA_SETUP_NONE; - } - spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); - mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, ptx_tbl); - spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); - } -} - -/* - * This function handles the command response of an add BA response. - * - * Handling includes changing the header fields into CPU format and - * creating the stream, provided the add BA is accepted. - */ -int mwifiex_ret_11n_addba_resp(struct mwifiex_private *priv, - struct host_cmd_ds_command *resp) -{ - struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp; - int tid, win_size; - struct mwifiex_rx_reorder_tbl *tbl; - uint16_t block_ack_param_set; - - block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set); - - tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK) - >> BLOCKACKPARAM_TID_POS; - /* - * Check if we had rejected the ADDBA, if yes then do not create - * the stream - */ - if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) { - mwifiex_dbg(priv->adapter, ERROR, "ADDBA RSP: failed %pM tid=%d)\n", - add_ba_rsp->peer_mac_addr, tid); - - tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, - add_ba_rsp->peer_mac_addr); - if (tbl) - mwifiex_del_rx_reorder_entry(priv, tbl); - - return 0; - } - - win_size = (block_ack_param_set & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) - >> BLOCKACKPARAM_WINSIZE_POS; - - tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, - add_ba_rsp->peer_mac_addr); - if (tbl) { - if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) && - priv->add_ba_param.rx_amsdu && - (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED)) - tbl->amsdu = true; - else - tbl->amsdu = false; - } - - mwifiex_dbg(priv->adapter, CMD, - "cmd: ADDBA RSP: %pM tid=%d ssn=%d win_size=%d\n", - add_ba_rsp->peer_mac_addr, tid, add_ba_rsp->ssn, win_size); - - return 0; -} - -/* - * This function handles BA stream timeout event by preparing and sending - * a command to the firmware. - */ -void mwifiex_11n_ba_stream_timeout(struct mwifiex_private *priv, - struct host_cmd_ds_11n_batimeout *event) -{ - struct host_cmd_ds_11n_delba delba; - - memset(&delba, 0, sizeof(struct host_cmd_ds_11n_delba)); - memcpy(delba.peer_mac_addr, event->peer_mac_addr, ETH_ALEN); - - delba.del_ba_param_set |= - cpu_to_le16((u16) event->tid << DELBA_TID_POS); - delba.del_ba_param_set |= cpu_to_le16( - (u16) event->origninator << DELBA_INITIATOR_POS); - delba.reason_code = cpu_to_le16(WLAN_REASON_QSTA_TIMEOUT); - mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA, 0, 0, &delba, false); -} - -/* - * This function cleans up the Rx reorder table by deleting all the entries - * and re-initializing. - */ -void mwifiex_11n_cleanup_reorder_tbl(struct mwifiex_private *priv) -{ - struct mwifiex_rx_reorder_tbl *del_tbl_ptr, *tmp_node; - unsigned long flags; - - spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); - list_for_each_entry_safe(del_tbl_ptr, tmp_node, - &priv->rx_reorder_tbl_ptr, list) { - spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); - mwifiex_del_rx_reorder_entry(priv, del_tbl_ptr); - spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); - } - INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); - spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); - - mwifiex_reset_11n_rx_seq_num(priv); -} - -/* - * This function updates all rx_reorder_tbl's flags. - */ -void mwifiex_update_rxreor_flags(struct mwifiex_adapter *adapter, u8 flags) -{ - struct mwifiex_private *priv; - struct mwifiex_rx_reorder_tbl *tbl; - unsigned long lock_flags; - int i; - - for (i = 0; i < adapter->priv_num; i++) { - priv = adapter->priv[i]; - if (!priv) - continue; - - spin_lock_irqsave(&priv->rx_reorder_tbl_lock, lock_flags); - if (list_empty(&priv->rx_reorder_tbl_ptr)) { - spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, - lock_flags); - continue; - } - - list_for_each_entry(tbl, &priv->rx_reorder_tbl_ptr, list) - tbl->flags = flags; - spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, lock_flags); - } - - return; -} - -/* This function update all the rx_win_size based on coex flag - */ -static void mwifiex_update_ampdu_rxwinsize(struct mwifiex_adapter *adapter, - bool coex_flag) -{ - u8 i; - u32 rx_win_size; - struct mwifiex_private *priv; - - dev_dbg(adapter->dev, "Update rxwinsize %d\n", coex_flag); - - for (i = 0; i < adapter->priv_num; i++) { - if (!adapter->priv[i]) - continue; - priv = adapter->priv[i]; - rx_win_size = priv->add_ba_param.rx_win_size; - if (coex_flag) { - if (priv->bss_type == MWIFIEX_BSS_TYPE_STA) - priv->add_ba_param.rx_win_size = - MWIFIEX_STA_COEX_AMPDU_DEF_RXWINSIZE; - if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) - priv->add_ba_param.rx_win_size = - MWIFIEX_STA_COEX_AMPDU_DEF_RXWINSIZE; - if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) - priv->add_ba_param.rx_win_size = - MWIFIEX_UAP_COEX_AMPDU_DEF_RXWINSIZE; - } else { - if (priv->bss_type == MWIFIEX_BSS_TYPE_STA) - priv->add_ba_param.rx_win_size = - MWIFIEX_STA_AMPDU_DEF_RXWINSIZE; - if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) - priv->add_ba_param.rx_win_size = - MWIFIEX_STA_AMPDU_DEF_RXWINSIZE; - if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) - priv->add_ba_param.rx_win_size = - MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE; - } - - if (adapter->coex_win_size && adapter->coex_rx_win_size) - priv->add_ba_param.rx_win_size = - adapter->coex_rx_win_size; - - if (rx_win_size != priv->add_ba_param.rx_win_size) { - if (!priv->media_connected) - continue; - for (i = 0; i < MAX_NUM_TID; i++) - mwifiex_11n_delba(priv, i); - } - } -} - -/* This function check coex for RX BA - */ -void mwifiex_coex_ampdu_rxwinsize(struct mwifiex_adapter *adapter) -{ - u8 i; - struct mwifiex_private *priv; - u8 count = 0; - - for (i = 0; i < adapter->priv_num; i++) { - if (adapter->priv[i]) { - priv = adapter->priv[i]; - if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) { - if (priv->media_connected) - count++; - } - if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { - if (priv->bss_started) - count++; - } - } - if (count >= MWIFIEX_BSS_COEX_COUNT) - break; - } - if (count >= MWIFIEX_BSS_COEX_COUNT) - mwifiex_update_ampdu_rxwinsize(adapter, true); - else - mwifiex_update_ampdu_rxwinsize(adapter, false); -} |