diff options
Diffstat (limited to 'drivers/net/wireless/sd8797/mlan/mlan_11n_rxreorder.c')
| -rw-r--r-- | drivers/net/wireless/sd8797/mlan/mlan_11n_rxreorder.c | 1135 |
1 files changed, 1135 insertions, 0 deletions
diff --git a/drivers/net/wireless/sd8797/mlan/mlan_11n_rxreorder.c b/drivers/net/wireless/sd8797/mlan/mlan_11n_rxreorder.c new file mode 100644 index 000000000000..cabd78b9017f --- /dev/null +++ b/drivers/net/wireless/sd8797/mlan/mlan_11n_rxreorder.c @@ -0,0 +1,1135 @@ +/** @file mlan_11n_rxreorder.c + * + * @brief This file contains the handling of RxReordering in wlan + * driver. + * + * Copyright (C) 2008-2011, 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. + */ + +/******************************************************** +Change log: + 11/10/2008: initial version +********************************************************/ + +#include "mlan.h" +#include "mlan_join.h" +#include "mlan_util.h" +#include "mlan_fw.h" +#include "mlan_main.h" +#include "mlan_wmm.h" +#include "mlan_11n.h" +#include "mlan_11n_rxreorder.h" + +/******************************************************** + Local Variables +********************************************************/ + +/******************************************************** + Global Variables +********************************************************/ + +/******************************************************** + Local Functions +********************************************************/ +/** + * @brief This function will dispatch amsdu packet and + * forward it to kernel/upper layer + * + * @param priv A pointer to mlan_private + * @param pmbuf A pointer to the received buffer + * + * @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE + */ +static mlan_status +wlan_11n_dispatch_amsdu_pkt(mlan_private * priv, pmlan_buffer pmbuf) +{ + RxPD *prx_pd; + prx_pd = (RxPD *) (pmbuf->pbuf + pmbuf->data_offset); + + ENTER(); + if (prx_pd->rx_pkt_type == PKT_TYPE_AMSDU) { + pmbuf->data_len = prx_pd->rx_pkt_length; + pmbuf->data_offset += prx_pd->rx_pkt_offset; + wlan_11n_deaggregate_pkt(priv, pmbuf); + LEAVE(); + return MLAN_STATUS_SUCCESS; + } + LEAVE(); + return MLAN_STATUS_FAILURE; +} + +/** + * @brief This function will process the rx packet and + * forward it to kernel/upper layer + * + * @param priv A pointer to mlan_private + * @param payload A pointer to rx packet payload + * + * @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE + */ +static mlan_status +wlan_11n_dispatch_pkt(t_void * priv, t_void * payload) +{ + mlan_status ret = MLAN_STATUS_SUCCESS; +#ifdef STA_SUPPORT + pmlan_adapter pmadapter = ((pmlan_private) priv)->adapter; +#endif + ENTER(); + if (payload == (t_void *) RX_PKT_DROPPED_IN_FW) { + LEAVE(); + return ret; + } +#ifdef UAP_SUPPORT + if (GET_BSS_ROLE((mlan_private *) priv) == MLAN_BSS_ROLE_UAP) { + if (MLAN_STATUS_SUCCESS == + wlan_11n_dispatch_amsdu_pkt((mlan_private *) priv, + (pmlan_buffer) payload)) { + LEAVE(); + return ret; + } + ret = wlan_process_uap_rx_packet(priv, (pmlan_buffer) payload); + LEAVE(); + return ret; + } +#endif /* UAP_SUPPORT */ + +#ifdef STA_SUPPORT + if (MLAN_STATUS_SUCCESS == + wlan_11n_dispatch_amsdu_pkt((mlan_private *) priv, + (pmlan_buffer) payload)) { + LEAVE(); + return ret; + } + ret = wlan_process_rx_packet(pmadapter, (pmlan_buffer) payload); +#endif /* STA_SUPPORT */ + LEAVE(); + return ret; +} + +/** + * @brief This function restarts the reordering timeout timer + * + * @param pmadapter A pointer to mlan_adapter + * @param rx_reor_tbl_ptr A pointer to structure RxReorderTbl + * + * @return N/A + */ +static void +mlan_11n_rxreorder_timer_restart(pmlan_adapter pmadapter, + RxReorderTbl * rx_reor_tbl_ptr) +{ + ENTER(); + if (rx_reor_tbl_ptr->timer_context.timer_is_set) + pmadapter->callbacks.moal_stop_timer(pmadapter->pmoal_handle, + rx_reor_tbl_ptr->timer_context. + timer); + + pmadapter->callbacks.moal_start_timer(pmadapter->pmoal_handle, + rx_reor_tbl_ptr->timer_context.timer, + MFALSE, + (rx_reor_tbl_ptr->win_size + * MIN_FLUSH_TIMER_MS)); + + rx_reor_tbl_ptr->timer_context.timer_is_set = MTRUE; + LEAVE(); +} + +/** + * @brief This function dispatches all the packets in the buffer. + * There could be holes in the buffer. + * + * @param priv A pointer to mlan_private + * @param rx_reor_tbl_ptr A pointer to structure RxReorderTbl + * @param start_win Start window + * + * @return MLAN_STATUS_SUCCESS + */ +static mlan_status +wlan_11n_dispatch_pkt_until_start_win(t_void * priv, + RxReorderTbl * rx_reor_tbl_ptr, + int start_win) +{ + int no_pkt_to_send, i, xchg; + mlan_status ret = MLAN_STATUS_SUCCESS; + void *rx_tmp_ptr = MNULL; + mlan_private *pmpriv = (mlan_private *) priv; + + ENTER(); + + no_pkt_to_send = (start_win > rx_reor_tbl_ptr->start_win) ? + MIN((start_win - rx_reor_tbl_ptr->start_win), + rx_reor_tbl_ptr->win_size) : rx_reor_tbl_ptr->win_size; + + for (i = 0; i < no_pkt_to_send; ++i) { + pmpriv->adapter->callbacks.moal_spin_lock(pmpriv->adapter->pmoal_handle, + pmpriv->rx_pkt_lock); + rx_tmp_ptr = MNULL; + if (rx_reor_tbl_ptr->rx_reorder_ptr[i]) { + rx_tmp_ptr = rx_reor_tbl_ptr->rx_reorder_ptr[i]; + rx_reor_tbl_ptr->rx_reorder_ptr[i] = MNULL; + } + pmpriv->adapter->callbacks.moal_spin_unlock(pmpriv->adapter-> + pmoal_handle, + pmpriv->rx_pkt_lock); + if (rx_tmp_ptr) + wlan_11n_dispatch_pkt(priv, rx_tmp_ptr); + } + + pmpriv->adapter->callbacks.moal_spin_lock(pmpriv->adapter->pmoal_handle, + pmpriv->rx_pkt_lock); + /* + * We don't have a circular buffer, hence use rotation to simulate + * circular buffer + */ + xchg = rx_reor_tbl_ptr->win_size - no_pkt_to_send; + for (i = 0; i < xchg; ++i) { + rx_reor_tbl_ptr->rx_reorder_ptr[i] = + rx_reor_tbl_ptr->rx_reorder_ptr[no_pkt_to_send + i]; + rx_reor_tbl_ptr->rx_reorder_ptr[no_pkt_to_send + i] = MNULL; + } + + rx_reor_tbl_ptr->start_win = start_win; + pmpriv->adapter->callbacks.moal_spin_unlock(pmpriv->adapter->pmoal_handle, + pmpriv->rx_pkt_lock); + + LEAVE(); + return ret; +} + +/** + * @brief This function will display the rxReorder table + * + * @param pmadapter A pointer to mlan_adapter structure + * @param rx_reor_tbl_ptr A pointer to structure RxReorderTbl + * + * @return N/A + */ +static t_void +wlan_11n_display_tbl_ptr(pmlan_adapter pmadapter, + RxReorderTbl * rx_reor_tbl_ptr) +{ + ENTER(); + + DBG_HEXDUMP(MDAT_D, "Reorder ptr", rx_reor_tbl_ptr->rx_reorder_ptr, + sizeof(t_void *) * rx_reor_tbl_ptr->win_size); + + LEAVE(); +} + +/** + * @brief This function will dispatch all packets sequentially + * from start_win until a hole is found and adjust the + * start_win appropriately + * + * @param priv A pointer to mlan_private + * @param rx_reor_tbl_ptr A pointer to structure RxReorderTbl + * + * @return MLAN_STATUS_SUCCESS + */ +static mlan_status +wlan_11n_scan_and_dispatch(t_void * priv, RxReorderTbl * rx_reor_tbl_ptr) +{ + int i, j, xchg; + mlan_status ret = MLAN_STATUS_SUCCESS; + void *rx_tmp_ptr = MNULL; + mlan_private *pmpriv = (mlan_private *) priv; + + ENTER(); + + for (i = 0; i < rx_reor_tbl_ptr->win_size; ++i) { + pmpriv->adapter->callbacks.moal_spin_lock(pmpriv->adapter->pmoal_handle, + pmpriv->rx_pkt_lock); + if (!rx_reor_tbl_ptr->rx_reorder_ptr[i]) { + pmpriv->adapter->callbacks.moal_spin_unlock(pmpriv->adapter-> + pmoal_handle, + pmpriv->rx_pkt_lock); + break; + } + rx_tmp_ptr = rx_reor_tbl_ptr->rx_reorder_ptr[i]; + rx_reor_tbl_ptr->rx_reorder_ptr[i] = MNULL; + pmpriv->adapter->callbacks.moal_spin_unlock(pmpriv->adapter-> + pmoal_handle, + pmpriv->rx_pkt_lock); + wlan_11n_dispatch_pkt(priv, rx_tmp_ptr); + } + + pmpriv->adapter->callbacks.moal_spin_lock(pmpriv->adapter->pmoal_handle, + pmpriv->rx_pkt_lock); + /* + * We don't have a circular buffer, hence use rotation to simulate + * circular buffer + */ + if (i > 0) { + xchg = rx_reor_tbl_ptr->win_size - i; + for (j = 0; j < xchg; ++j) { + rx_reor_tbl_ptr->rx_reorder_ptr[j] = + rx_reor_tbl_ptr->rx_reorder_ptr[i + j]; + rx_reor_tbl_ptr->rx_reorder_ptr[i + j] = MNULL; + } + } + + rx_reor_tbl_ptr->start_win = (rx_reor_tbl_ptr->start_win + i) + & (MAX_TID_VALUE - 1); + + pmpriv->adapter->callbacks.moal_spin_unlock(pmpriv->adapter->pmoal_handle, + pmpriv->rx_pkt_lock); + LEAVE(); + return ret; +} + +/** + * @brief This function delete rxreorder table's entry + * and free the memory + * + * @param priv A pointer to mlan_private + * @param rx_reor_tbl_ptr A pointer to structure RxReorderTbl + * + * @return N/A + */ +static t_void +wlan_11n_delete_rxreorder_tbl_entry(mlan_private * priv, + RxReorderTbl * rx_reor_tbl_ptr) +{ + pmlan_adapter pmadapter = priv->adapter; + + ENTER(); + + if (!rx_reor_tbl_ptr) { + LEAVE(); + return; + } + + wlan_11n_dispatch_pkt_until_start_win(priv, rx_reor_tbl_ptr, + (rx_reor_tbl_ptr->start_win + + rx_reor_tbl_ptr->win_size) + & (MAX_TID_VALUE - 1)); + + if (rx_reor_tbl_ptr->timer_context.timer) { + if (rx_reor_tbl_ptr->timer_context.timer_is_set) + priv->adapter->callbacks.moal_stop_timer(pmadapter->pmoal_handle, + rx_reor_tbl_ptr->timer_context. + timer); + priv->adapter->callbacks.moal_free_timer(pmadapter->pmoal_handle, + rx_reor_tbl_ptr->timer_context. + timer); + } + + PRINTM(MDAT_D, "Delete rx_reor_tbl_ptr: %p\n", rx_reor_tbl_ptr); + util_unlink_list(pmadapter->pmoal_handle, + &priv->rx_reorder_tbl_ptr, + (pmlan_linked_list) rx_reor_tbl_ptr, + pmadapter->callbacks.moal_spin_lock, + pmadapter->callbacks.moal_spin_unlock); + + pmadapter->callbacks.moal_mfree(pmadapter->pmoal_handle, + (t_u8 *) rx_reor_tbl_ptr->rx_reorder_ptr); + pmadapter->callbacks.moal_mfree(pmadapter->pmoal_handle, + (t_u8 *) rx_reor_tbl_ptr); + + LEAVE(); +} + +/** + * @brief This function returns the last used sequence number + * + * @param rx_reorder_tbl_ptr A pointer to structure RxReorderTbl + * + * @return Last used sequence number + */ +static int +wlan_11n_find_last_seqnum(RxReorderTbl * rx_reorder_tbl_ptr) +{ + int i; + + ENTER(); + for (i = (rx_reorder_tbl_ptr->win_size - 1); i >= 0; --i) { + if (rx_reorder_tbl_ptr->rx_reorder_ptr[i]) { + LEAVE(); + return i; + } + } + LEAVE(); + return -1; +} + +/** + * @brief This function flushes all data + * + * @param context Reorder context pointer + * + * @return N/A + */ +static t_void +wlan_flush_data(t_void * context) +{ + reorder_tmr_cnxt_t *reorder_cnxt = (reorder_tmr_cnxt_t *) context; + int startWin; + + ENTER(); + reorder_cnxt->timer_is_set = MFALSE; + wlan_11n_display_tbl_ptr(reorder_cnxt->priv->adapter, reorder_cnxt->ptr); + + if ((startWin = wlan_11n_find_last_seqnum(reorder_cnxt->ptr)) >= 0) { + PRINTM(MINFO, "Flush data %d\n", startWin); + wlan_11n_dispatch_pkt_until_start_win(reorder_cnxt->priv, + reorder_cnxt->ptr, + ((reorder_cnxt->ptr->start_win + + startWin + 1) & (MAX_TID_VALUE - + 1))); + } + + wlan_11n_display_tbl_ptr(reorder_cnxt->priv->adapter, reorder_cnxt->ptr); + LEAVE(); +} + +/** + * @brief This function will create a entry in rx reordering table for the + * given ta/tid and will initialize it with seq_num, win_size + * + * @param priv A pointer to mlan_private + * @param ta ta to find in reordering table + * @param tid tid to find in reordering table + * @param win_size win_size for the give ta/tid pair. + * @param seq_num Starting sequence number for current entry. + * + * @return N/A + */ +static t_void +wlan_11n_create_rxreorder_tbl(mlan_private * priv, t_u8 * ta, int tid, + int win_size, int seq_num) +{ + int i; + pmlan_adapter pmadapter = priv->adapter; + RxReorderTbl *rx_reor_tbl_ptr, *new_node; + sta_node *sta_ptr = MNULL; + t_u16 last_seq = 0; + + ENTER(); + + /* + * If we get a TID, ta pair which is already present dispatch all the + * the packets and move the window size until the ssn + */ + if ((rx_reor_tbl_ptr = wlan_11n_get_rxreorder_tbl(priv, tid, ta))) { + wlan_11n_dispatch_pkt_until_start_win(priv, rx_reor_tbl_ptr, seq_num); + } else { + PRINTM(MDAT_D, "%s: seq_num %d, tid %d, ta %02x:%02x:%02x:%02x:" + "%02x:%02x, win_size %d\n", __FUNCTION__, + seq_num, tid, ta[0], ta[1], ta[2], ta[3], + ta[4], ta[5], win_size); + if (pmadapter->callbacks. + moal_malloc(pmadapter->pmoal_handle, sizeof(RxReorderTbl), + MLAN_MEM_DEF, (t_u8 **) & new_node)) { + PRINTM(MERROR, "Rx reorder memory allocation failed\n"); + LEAVE(); + return; + } + + util_init_list((pmlan_linked_list) new_node); + new_node->tid = tid; + memcpy(pmadapter, new_node->ta, ta, MLAN_MAC_ADDR_LENGTH); + new_node->start_win = seq_num; + if (queuing_ra_based(priv)) { + // TODO for adhoc + if (GET_BSS_ROLE(priv) == MLAN_BSS_ROLE_UAP) { + if ((sta_ptr = wlan_get_station_entry(priv, ta))) + last_seq = sta_ptr->rx_seq[tid]; + } + PRINTM(MINFO, "UAP/ADHOC:last_seq=%d start_win=%d\n", last_seq, + new_node->start_win); + } else { + last_seq = priv->rx_seq[tid]; + } + if ((last_seq != DEFAULT_SEQ_NUM) && (last_seq >= new_node->start_win)) { + PRINTM(MDAT_D, "Update start_win: last_seq=%d, start_win=%d\n", + last_seq, new_node->start_win); + new_node->start_win = last_seq + 1; + } + new_node->win_size = win_size; + + if (pmadapter->callbacks. + moal_malloc(pmadapter->pmoal_handle, sizeof(t_void *) * win_size, + MLAN_MEM_DEF, (t_u8 **) & new_node->rx_reorder_ptr)) { + PRINTM(MERROR, "Rx reorder table memory allocation" "failed\n"); + pmadapter->callbacks.moal_mfree(pmadapter->pmoal_handle, + (t_u8 *) new_node); + LEAVE(); + return; + } + + PRINTM(MDAT_D, "Create ReorderPtr: %p\n", new_node); + new_node->timer_context.ptr = new_node; + new_node->timer_context.priv = priv; + new_node->timer_context.timer_is_set = MFALSE; + new_node->ba_status = BA_STREAM_SETUP_INPROGRESS; + + pmadapter->callbacks.moal_init_timer(pmadapter->pmoal_handle, + &new_node->timer_context.timer, + wlan_flush_data, + &new_node->timer_context); + + for (i = 0; i < win_size; ++i) + new_node->rx_reorder_ptr[i] = MNULL; + + util_enqueue_list_tail(pmadapter->pmoal_handle, + &priv->rx_reorder_tbl_ptr, + (pmlan_linked_list) new_node, + pmadapter->callbacks.moal_spin_lock, + pmadapter->callbacks.moal_spin_unlock); + } + + LEAVE(); +} + +/******************************************************** + Global Functions +********************************************************/ + +/** + * @brief This function will return the pointer to a entry in rx reordering + * table which matches the give TA/TID pair + * + * @param priv A pointer to mlan_private + * @param ta ta to find in reordering table + * @param tid tid to find in reordering table + * + * @return A pointer to structure RxReorderTbl + */ +RxReorderTbl * +wlan_11n_get_rxreorder_tbl(mlan_private * priv, int tid, t_u8 * ta) +{ + RxReorderTbl *rx_reor_tbl_ptr; + + ENTER(); + + if (! + (rx_reor_tbl_ptr = + (RxReorderTbl *) util_peek_list(priv->adapter->pmoal_handle, + &priv->rx_reorder_tbl_ptr, + priv->adapter->callbacks. + moal_spin_lock, + priv->adapter->callbacks. + moal_spin_unlock))) { + LEAVE(); + return MNULL; + } + + while (rx_reor_tbl_ptr != (RxReorderTbl *) & priv->rx_reorder_tbl_ptr) { + if ((!memcmp + (priv->adapter, rx_reor_tbl_ptr->ta, ta, MLAN_MAC_ADDR_LENGTH)) && + (rx_reor_tbl_ptr->tid == tid)) { + LEAVE(); + return rx_reor_tbl_ptr; + } + + rx_reor_tbl_ptr = rx_reor_tbl_ptr->pnext; + } + + LEAVE(); + return MNULL; +} + +/** + * @brief This function prepares command for adding a block ack + * request. + * + * @param priv A pointer to mlan_private structure + * @param cmd A pointer to HostCmd_DS_COMMAND structure + * @param pdata_buf A pointer to data buffer + * + * @return MLAN_STATUS_SUCCESS + */ +mlan_status +wlan_cmd_11n_addba_req(mlan_private * priv, + HostCmd_DS_COMMAND * cmd, t_void * pdata_buf) +{ + HostCmd_DS_11N_ADDBA_REQ *padd_ba_req = (HostCmd_DS_11N_ADDBA_REQ *) + & cmd->params.add_ba_req; + ENTER(); + + cmd->command = wlan_cpu_to_le16(HostCmd_CMD_11N_ADDBA_REQ); + cmd->size = wlan_cpu_to_le16(sizeof(HostCmd_DS_11N_ADDBA_REQ) + S_DS_GEN); + + memcpy(priv->adapter, padd_ba_req, pdata_buf, + sizeof(HostCmd_DS_11N_ADDBA_REQ)); + padd_ba_req->block_ack_param_set = + wlan_cpu_to_le16(padd_ba_req->block_ack_param_set); + padd_ba_req->block_ack_tmo = wlan_cpu_to_le16(padd_ba_req->block_ack_tmo); + padd_ba_req->ssn = wlan_cpu_to_le16(padd_ba_req->ssn); + + LEAVE(); + return MLAN_STATUS_SUCCESS; +} + +/** + * @brief This function prepares command for adding a block ack + * response. + * + * @param priv A pointer to mlan_private structure + * @param cmd A pointer to HostCmd_DS_COMMAND structure + * @param pdata_buf A pointer to data buffer + * + * @return MLAN_STATUS_SUCCESS + */ +mlan_status +wlan_cmd_11n_addba_rspgen(mlan_private * priv, + HostCmd_DS_COMMAND * cmd, void *pdata_buf) +{ + HostCmd_DS_11N_ADDBA_RSP *padd_ba_rsp = (HostCmd_DS_11N_ADDBA_RSP *) + & cmd->params.add_ba_rsp; + HostCmd_DS_11N_ADDBA_REQ *pevt_addba_req = + (HostCmd_DS_11N_ADDBA_REQ *) pdata_buf; + t_u8 tid = 0; + int win_size = 0; + + ENTER(); + + pevt_addba_req->block_ack_param_set = + wlan_le16_to_cpu(pevt_addba_req->block_ack_param_set); + pevt_addba_req->block_ack_tmo = + wlan_le16_to_cpu(pevt_addba_req->block_ack_tmo); + pevt_addba_req->ssn = wlan_le16_to_cpu(pevt_addba_req->ssn); + + cmd->command = wlan_cpu_to_le16(HostCmd_CMD_11N_ADDBA_RSP); + cmd->size = wlan_cpu_to_le16(sizeof(HostCmd_DS_11N_ADDBA_RSP) + S_DS_GEN); + + memcpy(priv->adapter, padd_ba_rsp->peer_mac_addr, + pevt_addba_req->peer_mac_addr, MLAN_MAC_ADDR_LENGTH); + padd_ba_rsp->dialog_token = pevt_addba_req->dialog_token; + padd_ba_rsp->block_ack_tmo = + wlan_cpu_to_le16(pevt_addba_req->block_ack_tmo); + padd_ba_rsp->ssn = wlan_cpu_to_le16(pevt_addba_req->ssn); + + padd_ba_rsp->block_ack_param_set = pevt_addba_req->block_ack_param_set; + tid = (padd_ba_rsp->block_ack_param_set & BLOCKACKPARAM_TID_MASK) + >> BLOCKACKPARAM_TID_POS; + if (priv->addba_reject[tid] +#ifdef STA_SUPPORT + || ((GET_BSS_ROLE(priv) == MLAN_BSS_ROLE_STA) + && priv->wps.session_enable) +#endif +#ifdef UAP_SUPPORT + || ((GET_BSS_ROLE(priv) == MLAN_BSS_ROLE_UAP) + && (priv->adapter->pending_bridge_pkts > RX_LOW_THRESHOLD)) +#endif + ) + padd_ba_rsp->status_code = wlan_cpu_to_le16(ADDBA_RSP_STATUS_DECLINED); + else + padd_ba_rsp->status_code = wlan_cpu_to_le16(ADDBA_RSP_STATUS_ACCEPT); + padd_ba_rsp->block_ack_param_set &= ~BLOCKACKPARAM_WINSIZE_MASK; + if (!priv->add_ba_param.rx_amsdu || + (priv->aggr_prio_tbl[tid].amsdu == BA_STREAM_NOT_ALLOWED)) + /* We do not support AMSDU inside AMPDU, hence reset the bit */ + padd_ba_rsp->block_ack_param_set &= ~BLOCKACKPARAM_AMSDU_SUPP_MASK; + + padd_ba_rsp->block_ack_param_set |= (priv->add_ba_param.rx_win_size << + BLOCKACKPARAM_WINSIZE_POS); + win_size = (padd_ba_rsp->block_ack_param_set & BLOCKACKPARAM_WINSIZE_MASK) + >> BLOCKACKPARAM_WINSIZE_POS; + padd_ba_rsp->block_ack_param_set = + wlan_cpu_to_le16(padd_ba_rsp->block_ack_param_set); + + if (padd_ba_rsp->status_code == wlan_cpu_to_le16(ADDBA_RSP_STATUS_ACCEPT)) + wlan_11n_create_rxreorder_tbl(priv, pevt_addba_req->peer_mac_addr, tid, + win_size, pevt_addba_req->ssn); + LEAVE(); + return MLAN_STATUS_SUCCESS; +} + +/** + * @brief This function prepares command for deleting a block ack + * request. + * + * @param priv A pointer to mlan_private structure + * @param cmd A pointer to HostCmd_DS_COMMAND structure + * @param pdata_buf A pointer to data buffer + * + * @return MLAN_STATUS_SUCCESS + */ +mlan_status +wlan_cmd_11n_delba(mlan_private * priv, + HostCmd_DS_COMMAND * cmd, void *pdata_buf) +{ + HostCmd_DS_11N_DELBA *pdel_ba = (HostCmd_DS_11N_DELBA *) + & cmd->params.del_ba; + + ENTER(); + + cmd->command = wlan_cpu_to_le16(HostCmd_CMD_11N_DELBA); + cmd->size = wlan_cpu_to_le16(sizeof(HostCmd_DS_11N_DELBA) + S_DS_GEN); + + memcpy(priv->adapter, pdel_ba, pdata_buf, sizeof(HostCmd_DS_11N_DELBA)); + pdel_ba->del_ba_param_set = wlan_cpu_to_le16(pdel_ba->del_ba_param_set); + pdel_ba->reason_code = wlan_cpu_to_le16(pdel_ba->reason_code); + + LEAVE(); + return MLAN_STATUS_SUCCESS; +} + +/** + * @brief This function will identify if RxReodering is needed for the packet + * and will do the reordering if required before sending it to kernel + * + * @param priv A pointer to mlan_private + * @param seq_num Seqence number of the current packet + * @param tid Tid of the current packet + * @param ta Transmiter address of the current packet + * @param pkt_type Packetype for the current packet (to identify if its a BAR) + * @param payload Pointer to the payload + * + * @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE + */ +mlan_status +mlan_11n_rxreorder_pkt(void *priv, t_u16 seq_num, t_u16 tid, + t_u8 * ta, t_u8 pkt_type, void *payload) +{ + RxReorderTbl *rx_reor_tbl_ptr; + int prev_start_win, start_win, end_win, win_size; + mlan_status ret = MLAN_STATUS_SUCCESS; + pmlan_adapter pmadapter = ((mlan_private *) priv)->adapter; + + ENTER(); + + if (! + (rx_reor_tbl_ptr = + wlan_11n_get_rxreorder_tbl((mlan_private *) priv, tid, ta))) { + if (pkt_type != PKT_TYPE_BAR) + wlan_11n_dispatch_pkt(priv, payload); + + LEAVE(); + return ret; + + } else { + if ((pkt_type == PKT_TYPE_AMSDU) && !rx_reor_tbl_ptr->amsdu) { + wlan_11n_dispatch_pkt(priv, payload); + LEAVE(); + return ret; + } + if (pkt_type == PKT_TYPE_BAR) + PRINTM(MDAT_D, "BAR "); + if (pkt_type == PKT_TYPE_AMSDU) + PRINTM(MDAT_D, "AMSDU "); + + prev_start_win = start_win = rx_reor_tbl_ptr->start_win; + win_size = rx_reor_tbl_ptr->win_size; + end_win = ((start_win + win_size) - 1) & (MAX_TID_VALUE - 1); + + PRINTM(MDAT_D, + "TID %d, TA %02x:%02x:%02x:%02x:%02x:%02x\n", + tid, ta[0], ta[1], ta[2], ta[3], ta[4], ta[5]); + PRINTM(MDAT_D, + "1:seq_num %d start_win %d win_size %d end_win %d\n", + seq_num, start_win, win_size, end_win); + /* + * If seq_num is less then starting win then ignore and drop + * the packet + */ + if ((start_win + TWOPOW11) > (MAX_TID_VALUE - 1)) { /* Wrap */ + if (seq_num >= ((start_win + (TWOPOW11)) & + (MAX_TID_VALUE - 1)) && (seq_num < start_win)) { + ret = MLAN_STATUS_FAILURE; + goto done; + } + } else if ((seq_num < start_win) || + (seq_num > (start_win + (TWOPOW11)))) { + ret = MLAN_STATUS_FAILURE; + 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); + + PRINTM(MDAT_D, + "2:seq_num %d start_win %d win_size %d end_win %d\n", + seq_num, start_win, win_size, end_win); + + if (((end_win < start_win) && + (seq_num < (TWOPOW11 - (MAX_TID_VALUE - start_win))) && + (seq_num > end_win)) + || ((end_win > start_win) && + ((seq_num > end_win) || (seq_num < start_win)))) { + + end_win = seq_num; + if (((seq_num - win_size) + 1) >= 0) + start_win = (end_win - win_size) + 1; + else + start_win = (MAX_TID_VALUE - (win_size - seq_num)) + 1; + + if ((ret = wlan_11n_dispatch_pkt_until_start_win(priv, + rx_reor_tbl_ptr, + start_win))) { + goto done; + } + } + + PRINTM(MDAT_D, "3:seq_num %d start_win %d win_size %d" + " end_win %d\n", seq_num, start_win, win_size, end_win); + if (pkt_type != PKT_TYPE_BAR) { + if (seq_num >= start_win) { + if (rx_reor_tbl_ptr->rx_reorder_ptr[seq_num - start_win]) { + PRINTM(MDAT_D, "Drop Duplicate Pkt\n"); + ret = MLAN_STATUS_FAILURE; + goto done; + } + rx_reor_tbl_ptr->rx_reorder_ptr[seq_num - start_win] = payload; + } else { /* Wrap condition */ + if (rx_reor_tbl_ptr->rx_reorder_ptr[(seq_num + + (MAX_TID_VALUE)) - + start_win]) { + PRINTM(MDAT_D, "Drop Duplicate Pkt\n"); + ret = MLAN_STATUS_FAILURE; + goto done; + } + rx_reor_tbl_ptr->rx_reorder_ptr[(seq_num + + (MAX_TID_VALUE)) - + start_win] = payload; + } + } + + wlan_11n_display_tbl_ptr(pmadapter, rx_reor_tbl_ptr); + + /* + * Dispatch all packets sequentially from start_win until a + * hole is found and adjust the start_win appropriately + */ + ret = wlan_11n_scan_and_dispatch(priv, rx_reor_tbl_ptr); + + wlan_11n_display_tbl_ptr(pmadapter, rx_reor_tbl_ptr); + } + + done: + if (!rx_reor_tbl_ptr->timer_context.timer_is_set || + (prev_start_win != rx_reor_tbl_ptr->start_win)) { + + mlan_11n_rxreorder_timer_restart(pmadapter, rx_reor_tbl_ptr); + } + + LEAVE(); + return ret; +} + +/** + * @brief This function will delete an entry for a given tid/ta pair. tid/ta + * are taken from delba_event body + * + * @param priv A pointer to mlan_private + * @param tid tid to send delba + * @param peer_mac MAC address to send delba + * @param type TYPE_DELBA_SENT or TYPE_DELBA_RECEIVE + * @param initiator MTRUE if we are initiator of ADDBA, MFALSE otherwise + * + * @return N/A + */ +void +mlan_11n_delete_bastream_tbl(mlan_private * priv, int tid, + t_u8 * peer_mac, t_u8 type, int initiator) +{ + RxReorderTbl *rx_reor_tbl_ptr; + TxBAStreamTbl *ptxtbl; + t_u8 cleanup_rx_reorder_tbl; + + ENTER(); + + if (type == TYPE_DELBA_RECEIVE) + cleanup_rx_reorder_tbl = (initiator) ? MTRUE : MFALSE; + else + cleanup_rx_reorder_tbl = (initiator) ? MFALSE : MTRUE; + + PRINTM(MEVENT, "DELBA: %02x:%02x:%02x:%02x:%02x:%02x tid=%d," + "initiator=%d\n", peer_mac[0], + peer_mac[1], peer_mac[2], + peer_mac[3], peer_mac[4], peer_mac[5], tid, initiator); + + if (cleanup_rx_reorder_tbl) { + if (!(rx_reor_tbl_ptr = wlan_11n_get_rxreorder_tbl(priv, tid, + peer_mac))) { + PRINTM(MWARN, "TID, TA not found in table!\n"); + LEAVE(); + return; + } + wlan_11n_delete_rxreorder_tbl_entry(priv, rx_reor_tbl_ptr); + } else { + if (!(ptxtbl = wlan_11n_get_txbastream_tbl(priv, tid, peer_mac))) { + PRINTM(MWARN, "TID, RA not found in table!\n"); + LEAVE(); + return; + } + + wlan_11n_delete_txbastream_tbl_entry(priv, ptxtbl); + } + + LEAVE(); +} + +/** + * @brief This function handles the command response of + * a block ack response + * + * @param priv A pointer to mlan_private structure + * @param resp A pointer to HostCmd_DS_COMMAND + * + * @return MLAN_STATUS_SUCCESS + */ +mlan_status +wlan_ret_11n_addba_resp(mlan_private * priv, HostCmd_DS_COMMAND * resp) +{ + HostCmd_DS_11N_ADDBA_RSP *padd_ba_rsp = (HostCmd_DS_11N_ADDBA_RSP *) + & resp->params.add_ba_rsp; + int tid; + RxReorderTbl *rx_reor_tbl_ptr = MNULL; + + ENTER(); + + padd_ba_rsp->status_code = wlan_le16_to_cpu(padd_ba_rsp->status_code); + padd_ba_rsp->block_ack_param_set = + wlan_le16_to_cpu(padd_ba_rsp->block_ack_param_set); + padd_ba_rsp->block_ack_tmo = wlan_le16_to_cpu(padd_ba_rsp->block_ack_tmo); + padd_ba_rsp->ssn = wlan_le16_to_cpu(padd_ba_rsp->ssn); + + tid = (padd_ba_rsp->block_ack_param_set & BLOCKACKPARAM_TID_MASK) + >> BLOCKACKPARAM_TID_POS; + /* Check if we had rejected the ADDBA, if yes then do not create the stream */ + if (padd_ba_rsp->status_code == BA_RESULT_SUCCESS) { + PRINTM(MCMND, + "ADDBA RSP: %02x:%02x:%02x:%02x:%02x:%02x tid=%d ssn=%d win_size=%d,amsdu=%d\n", + padd_ba_rsp->peer_mac_addr[0], padd_ba_rsp->peer_mac_addr[1], + padd_ba_rsp->peer_mac_addr[2], padd_ba_rsp->peer_mac_addr[3], + padd_ba_rsp->peer_mac_addr[4], padd_ba_rsp->peer_mac_addr[5], + tid, padd_ba_rsp->ssn, + ((padd_ba_rsp->block_ack_param_set & BLOCKACKPARAM_WINSIZE_MASK) + >> BLOCKACKPARAM_WINSIZE_POS), + padd_ba_rsp-> + block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK); + + if ((rx_reor_tbl_ptr = + wlan_11n_get_rxreorder_tbl(priv, tid, + padd_ba_rsp->peer_mac_addr))) { + rx_reor_tbl_ptr->ba_status = BA_STREAM_SETUP_COMPLETE; + if ((padd_ba_rsp-> + block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) && + priv->add_ba_param.rx_amsdu && + (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED)) + rx_reor_tbl_ptr->amsdu = MTRUE; + else + rx_reor_tbl_ptr->amsdu = MFALSE; + } + } else { + PRINTM(MERROR, + "ADDBA RSP: Failed(%02x:%02x:%02x:%02x:%02x:%02x tid=%d)\n", + padd_ba_rsp->peer_mac_addr[0], padd_ba_rsp->peer_mac_addr[1], + padd_ba_rsp->peer_mac_addr[2], padd_ba_rsp->peer_mac_addr[3], + padd_ba_rsp->peer_mac_addr[4], padd_ba_rsp->peer_mac_addr[5], + tid); + if ((rx_reor_tbl_ptr = + wlan_11n_get_rxreorder_tbl(priv, tid, + padd_ba_rsp->peer_mac_addr))) { + wlan_11n_delete_rxreorder_tbl_entry(priv, rx_reor_tbl_ptr); + } + } + + LEAVE(); + return MLAN_STATUS_SUCCESS; +} + +/** + * @brief This function handles ba_stream_timeout event + * + * @param priv A pointer to mlan_private + * @param event A pointer to structure HostCmd_DS_11N_BATIMEOUT + * + * @return N/A + */ +void +wlan_11n_ba_stream_timeout(mlan_private * priv, + HostCmd_DS_11N_BATIMEOUT * event) +{ + HostCmd_DS_11N_DELBA delba; + + ENTER(); + + DBG_HEXDUMP(MCMD_D, "Event:", (t_u8 *) event, 20); + + memset(priv->adapter, &delba, 0, sizeof(HostCmd_DS_11N_DELBA)); + memcpy(priv->adapter, delba.peer_mac_addr, event->peer_mac_addr, + MLAN_MAC_ADDR_LENGTH); + + delba.del_ba_param_set |= (t_u16) event->tid << DELBA_TID_POS; + delba.del_ba_param_set |= (t_u16) event->origninator << DELBA_INITIATOR_POS; + delba.reason_code = REASON_CODE_STA_TIMEOUT; + wlan_prepare_cmd(priv, HostCmd_CMD_11N_DELBA, 0, 0, MNULL, &delba); + + LEAVE(); + return; +} + +/** + * @brief This function cleans up reorder tbl + * + * @param priv A pointer to mlan_private + * + * @return N/A + */ +void +wlan_11n_cleanup_reorder_tbl(mlan_private * priv) +{ + RxReorderTbl *del_tbl_ptr; + + ENTER(); + + while ((del_tbl_ptr = (RxReorderTbl *) + util_peek_list(priv->adapter->pmoal_handle, + &priv->rx_reorder_tbl_ptr, + priv->adapter->callbacks.moal_spin_lock, + priv->adapter->callbacks.moal_spin_unlock))) { + wlan_11n_delete_rxreorder_tbl_entry(priv, del_tbl_ptr); + } + + util_init_list((pmlan_linked_list) & priv->rx_reorder_tbl_ptr); + + memset(priv->adapter, priv->rx_seq, 0xff, sizeof(priv->rx_seq)); + LEAVE(); +} + +/** + * @brief This function handle the rxba_sync event + * + * @param priv A pointer to mlan_private + * @param event_buf A pointer to event buf + * @param len event_buf length + * @return N/A + */ +void +wlan_11n_rxba_sync_event(mlan_private * priv, t_u8 * event_buf, t_u16 len) +{ + MrvlIEtypes_RxBaSync_t *tlv_rxba = (MrvlIEtypes_RxBaSync_t *) event_buf; + t_u16 tlv_type, tlv_len; + RxReorderTbl *rx_reor_tbl_ptr = MNULL; + t_u8 i, j; + t_u16 seq_num = 0; + int tlv_buf_left = len; + ENTER(); + DBG_HEXDUMP(MEVT_D, "RXBA_SYNC_EVT", event_buf, len); + while (tlv_buf_left >= sizeof(MrvlIEtypes_RxBaSync_t)) { + tlv_type = wlan_le16_to_cpu(tlv_rxba->header.type); + tlv_len = wlan_le16_to_cpu(tlv_rxba->header.len); + if (tlv_type != TLV_TYPE_RXBA_SYNC) { + PRINTM(MERROR, "Wrong TLV id=0x%x\n", tlv_type); + goto done; + } + tlv_rxba->seq_num = wlan_le16_to_cpu(tlv_rxba->seq_num); + tlv_rxba->bitmap_len = wlan_le16_to_cpu(tlv_rxba->bitmap_len); + PRINTM(MEVENT, + "%02x:%02x:%02x:%02x:%02x:%02x tid=%d seq_num=%d bitmap_len=%d\n", + tlv_rxba->mac[0], tlv_rxba->mac[1], tlv_rxba->mac[2], + tlv_rxba->mac[3], tlv_rxba->mac[4], tlv_rxba->mac[5], + tlv_rxba->tid, tlv_rxba->seq_num, tlv_rxba->bitmap_len); + rx_reor_tbl_ptr = + wlan_11n_get_rxreorder_tbl(priv, tlv_rxba->tid, tlv_rxba->mac); + if (!rx_reor_tbl_ptr) { + PRINTM(MEVENT, "Can not find rx_reorder_tbl\n"); + goto done; + } + for (i = 0; i < tlv_rxba->bitmap_len; i++) { + for (j = 0; j < 8; j++) { + if (tlv_rxba->bitmap[i] & (1 << j)) { + seq_num = + (tlv_rxba->seq_num + i * 8 + j) & (MAX_TID_VALUE - 1); + PRINTM(MEVENT, + "Fw dropped packet, seq=%d start_win=%d, win_size=%d\n", + seq_num, rx_reor_tbl_ptr->start_win, + rx_reor_tbl_ptr->win_size); + if (MLAN_STATUS_SUCCESS != + mlan_11n_rxreorder_pkt(priv, seq_num, tlv_rxba->tid, + tlv_rxba->mac, 0, + (t_void *) RX_PKT_DROPPED_IN_FW)) + { + PRINTM(MERROR, + "Fail to handle dropped packet, seq=%d\n", + seq_num); + } + } + } + } + tlv_buf_left -= (sizeof(MrvlIEtypesHeader_t) + tlv_len); + tlv_rxba = + (MrvlIEtypes_RxBaSync_t *) ((t_u8 *) tlv_rxba + tlv_len + + sizeof(MrvlIEtypesHeader_t)); + } + done: + LEAVE(); + return; +} + +/** + * @brief This function will send a DELBA for each entry in the priv's + * rx reordering table + * + * @param priv A pointer to mlan_private + */ +t_void +wlan_send_delba_to_all_in_reorder_tbl(pmlan_private priv) +{ + RxReorderTbl *rx_reor_tbl_ptr; + + ENTER(); + + if (! + (rx_reor_tbl_ptr = + (RxReorderTbl *) util_peek_list(priv->adapter->pmoal_handle, + &priv->rx_reorder_tbl_ptr, + priv->adapter->callbacks. + moal_spin_lock, + priv->adapter->callbacks. + moal_spin_unlock))) { + LEAVE(); + return; + } + + while (rx_reor_tbl_ptr != (RxReorderTbl *) & priv->rx_reorder_tbl_ptr) { + if (rx_reor_tbl_ptr->ba_status == BA_STREAM_SETUP_COMPLETE) { + rx_reor_tbl_ptr->ba_status = BA_STREAM_SETUP_INPROGRESS; + wlan_send_delba(priv, rx_reor_tbl_ptr->tid, rx_reor_tbl_ptr->ta, 0); + } + rx_reor_tbl_ptr = rx_reor_tbl_ptr->pnext; + } + LEAVE(); +} + +/** + * @brief This function cleans up reorder tbl for specific station + * + * @param priv A pointer to mlan_private + * @param ta ta to find in reordering table + * @return N/A + */ +void +wlan_cleanup_reorder_tbl(mlan_private * priv, t_u8 * ta) +{ + RxReorderTbl *rx_reor_tbl_ptr = MNULL; + t_u8 i; + ENTER(); + for (i = 0; i < MAX_NUM_TID; ++i) { + if ((rx_reor_tbl_ptr = wlan_11n_get_rxreorder_tbl(priv, i, ta))) { + wlan_11n_delete_rxreorder_tbl_entry(priv, rx_reor_tbl_ptr); + } + } + LEAVE(); + return; +} |