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authorKalle Valo <kvalo@codeaurora.org>2015-11-17 21:14:51 +0200
committerKalle Valo <kvalo@codeaurora.org>2015-11-18 14:28:30 +0200
commit277b024e5e3d4af4c219c0b9bd541ca4398e0b69 (patch)
tree55a9a1f68cc9361620acd3f51a454c98a4fc6c95 /drivers/net/wireless/mwifiex/11n_rxreorder.c
parentdd3f92dea849d96272642579003754df9367c160 (diff)
mwifiex: move under marvell vendor directory
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/mwifiex/11n_rxreorder.c')
-rw-r--r--drivers/net/wireless/mwifiex/11n_rxreorder.c910
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);
-}