| /** @file mlan_11n_rxreorder.c |
| * |
| * @brief This file contains the handling of RxReordering in wlan |
| * driver. |
| * |
| * Copyright (C) 2008-2009, Marvell International Ltd. |
| * All Rights Reserved |
| */ |
| |
| /******************************************************** |
| 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 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; |
| pmlan_adapter pmadapter = ((pmlan_private) priv)->adapter; |
| ret = wlan_process_rx_packet(pmadapter, (pmlan_buffer) payload); |
| return ret; |
| } |
| |
| /** |
| * @brief This function dispatchs 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 or MLAN_STATUS_FAILURE |
| */ |
| 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->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->rx_pkt_lock); |
| if (rx_tmp_ptr) |
| wlan_11n_dispatch_pkt(priv, rx_tmp_ptr); |
| } |
| |
| pmpriv->adapter->callbacks.moal_spin_lock(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->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, |
| 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 or MLAN_STATUS_FAILURE |
| */ |
| 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->rx_pkt_lock); |
| if (!rx_reor_tbl_ptr->rx_reorder_ptr[i]) { |
| pmpriv->adapter->callbacks.moal_spin_unlock(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->rx_pkt_lock); |
| wlan_11n_dispatch_pkt(priv, rx_tmp_ptr); |
| } |
| |
| pmpriv->adapter->callbacks.moal_spin_lock(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->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(rx_reor_tbl_ptr-> |
| timer_context.timer); |
| priv->adapter->callbacks.moal_free_timer(rx_reor_tbl_ptr-> |
| timer_context.timer); |
| } |
| |
| PRINTM(MDAT_D, "Delete rx_reor_tbl_ptr: %p\n", rx_reor_tbl_ptr); |
| util_unlink_list(&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((t_u8 *) rx_reor_tbl_ptr->rx_reorder_ptr); |
| pmadapter->callbacks.moal_mfree((t_u8 *) rx_reor_tbl_ptr); |
| |
| LEAVE(); |
| } |
| |
| /** |
| * @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->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(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; |
| } |
| |
| static int |
| wlan_11n_find_last_seqnum(RxReorderTbl * rxReorderTblPtr) |
| { |
| int i; |
| |
| for (i = (rxReorderTblPtr->win_size - 1); i >= 0; --i) { |
| if (rxReorderTblPtr->rx_reorder_ptr[i]) { |
| return i; |
| } |
| } |
| |
| return -1; |
| } |
| |
| static t_void |
| wlan_flush_data(t_void * context) |
| { |
| reorder_tmr_cnxt_t *reorder_cnxt = (reorder_tmr_cnxt_t *) context; |
| int startWin; |
| |
| 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); |
| } |
| |
| /** |
| * @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 |
| */ |
| 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; |
| |
| 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(sizeof(RxReorderTbl), |
| (t_u8 **) & new_node)) { |
| PRINTM(MERROR, "Rx reorder memory allocation failed\n"); |
| return; |
| } |
| |
| util_init_list((pmlan_linked_list) new_node); |
| new_node->tid = tid; |
| memcpy(new_node->ta, ta, MLAN_MAC_ADDR_LENGTH); |
| new_node->start_win = seq_num; |
| new_node->win_size = win_size; |
| |
| if (pmadapter->callbacks.moal_malloc(sizeof(t_void *) * win_size, |
| (t_u8 **) & new_node-> |
| rx_reorder_ptr)) { |
| PRINTM(MERROR, "Rx reorder table memory allocation" "failed\n"); |
| pmadapter->callbacks.moal_mfree((t_u8 *) new_node); |
| 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; |
| |
| pmadapter->callbacks.moal_init_timer(&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(&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 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(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; |
| |
| 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(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; |
| padd_ba_rsp->status_code = wlan_cpu_to_le16(priv->addba_reject[tid]); |
| padd_ba_rsp->block_ack_param_set &= ~BLOCKACKPARAM_WINSIZE_MASK; |
| /* We donot 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); |
| padd_ba_rsp->block_ack_param_set = |
| wlan_cpu_to_le16(padd_ba_rsp->block_ack_param_set); |
| padd_ba_rsp->block_ack_tmo = |
| (t_u16) wlan_cpu_to_le16(priv->add_ba_param.timeout); |
| |
| 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(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 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))) { |
| LEAVE(); |
| if (pkt_type == PKT_TYPE_BAR) |
| return ret; |
| else { |
| wlan_11n_dispatch_pkt(priv, payload); |
| return ret; |
| } |
| } else { |
| if (pkt_type == PKT_TYPE_BAR) |
| PRINTM(MDAT_D, "BAR "); |
| |
| 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); |
| if (rx_reor_tbl_ptr->timer_context.timer_is_set) |
| pmadapter->callbacks.moal_stop_timer(rx_reor_tbl_ptr->timer_context. |
| timer); |
| pmadapter->callbacks.moal_start_timer(rx_reor_tbl_ptr->timer_context. |
| timer, MFALSE, |
| MIN_FLUSH_TIMER_MS * win_size); |
| rx_reor_tbl_ptr->timer_context.timer_is_set = MTRUE; |
| |
| 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)) { |
| LEAVE(); |
| return MLAN_STATUS_FAILURE; |
| } |
| } else if ((seq_num < start_win) || |
| (seq_num > (start_win + (TWOPOW11)))) { |
| LEAVE(); |
| return MLAN_STATUS_FAILURE; |
| } |
| |
| /* |
| * 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))) { |
| LEAVE(); |
| return ret; |
| } |
| } |
| |
| 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) |
| rx_reor_tbl_ptr->rx_reorder_ptr[seq_num - start_win] = payload; |
| else /* Wrap condition */ |
| 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); |
| } |
| |
| 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, win_size; |
| |
| ENTER(); |
| |
| padd_ba_rsp->status_code = wlan_le16_to_cpu(padd_ba_rsp->status_code); |
| |
| 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) { |
| 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); |
| |
| win_size = |
| (padd_ba_rsp->block_ack_param_set & BLOCKACKPARAM_WINSIZE_MASK) |
| >> BLOCKACKPARAM_WINSIZE_POS; |
| |
| wlan_11n_create_rxreorder_tbl(priv, padd_ba_rsp->peer_mac_addr, tid, |
| win_size, padd_ba_rsp->ssn); |
| |
| PRINTM(MCMND, "ADDBA RSP: %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); |
| } 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); |
| |
| } |
| |
| 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(&delba, 0, sizeof(HostCmd_DS_11N_DELBA)); |
| memcpy(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->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); |
| |
| LEAVE(); |
| } |
