| /* |
| * Marvell Wireless LAN device driver: 802.11n |
| * |
| * Copyright (C) 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. |
| */ |
| |
| #include "decl.h" |
| #include "ioctl.h" |
| #include "util.h" |
| #include "fw.h" |
| #include "main.h" |
| #include "wmm.h" |
| #include "11n.h" |
| |
| /* |
| * Fills HT capability information field, AMPDU Parameters field, HT extended |
| * capability field, and supported MCS set fields. |
| * |
| * HT capability information field, AMPDU Parameters field, supported MCS set |
| * fields are retrieved from cfg80211 stack |
| * |
| * RD responder bit to set to clear in the extended capability header. |
| */ |
| void |
| mwifiex_fill_cap_info(struct mwifiex_private *priv, u8 radio_type, |
| struct mwifiex_ie_types_htcap *ht_cap) |
| { |
| uint16_t ht_ext_cap = le16_to_cpu(ht_cap->ht_cap.extended_ht_cap_info); |
| struct ieee80211_supported_band *sband = |
| priv->wdev->wiphy->bands[radio_type]; |
| |
| ht_cap->ht_cap.ampdu_params_info = |
| (sband->ht_cap.ampdu_factor & |
| IEEE80211_HT_AMPDU_PARM_FACTOR)| |
| ((sband->ht_cap.ampdu_density << |
| IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT) & |
| IEEE80211_HT_AMPDU_PARM_DENSITY); |
| |
| memcpy((u8 *) &ht_cap->ht_cap.mcs, &sband->ht_cap.mcs, |
| sizeof(sband->ht_cap.mcs)); |
| |
| if (priv->bss_mode == NL80211_IFTYPE_STATION || |
| (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)) |
| /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */ |
| SETHT_MCS32(ht_cap->ht_cap.mcs.rx_mask); |
| |
| /* Clear RD responder bit */ |
| ht_ext_cap &= ~IEEE80211_HT_EXT_CAP_RD_RESPONDER; |
| |
| ht_cap->ht_cap.cap_info = cpu_to_le16(sband->ht_cap.cap); |
| ht_cap->ht_cap.extended_ht_cap_info = cpu_to_le16(ht_ext_cap); |
| } |
| |
| /* |
| * This function returns the pointer to an entry in BA Stream |
| * table which matches the requested BA status. |
| */ |
| static struct mwifiex_tx_ba_stream_tbl * |
| mwifiex_11n_get_tx_ba_stream_status(struct mwifiex_private *priv, |
| enum mwifiex_ba_status ba_status) |
| { |
| struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); |
| list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { |
| if (tx_ba_tsr_tbl->ba_status == ba_status) { |
| spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, |
| flags); |
| return tx_ba_tsr_tbl; |
| } |
| } |
| spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); |
| return NULL; |
| } |
| |
| /* |
| * This function handles the command response of delete a block |
| * ack request. |
| * |
| * The function checks the response success status and takes action |
| * accordingly (send an add BA request in case of success, or recreate |
| * the deleted stream in case of failure, if the add BA was also |
| * initiated by us). |
| */ |
| int mwifiex_ret_11n_delba(struct mwifiex_private *priv, |
| struct host_cmd_ds_command *resp) |
| { |
| int tid; |
| struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl; |
| struct host_cmd_ds_11n_delba *del_ba = |
| (struct host_cmd_ds_11n_delba *) &resp->params.del_ba; |
| uint16_t del_ba_param_set = le16_to_cpu(del_ba->del_ba_param_set); |
| |
| tid = del_ba_param_set >> DELBA_TID_POS; |
| if (del_ba->del_result == BA_RESULT_SUCCESS) { |
| mwifiex_11n_delete_ba_stream_tbl(priv, tid, |
| del_ba->peer_mac_addr, TYPE_DELBA_SENT, |
| INITIATOR_BIT(del_ba_param_set)); |
| |
| tx_ba_tbl = mwifiex_11n_get_tx_ba_stream_status(priv, |
| BA_STREAM_SETUP_INPROGRESS); |
| if (tx_ba_tbl) |
| mwifiex_send_addba(priv, tx_ba_tbl->tid, |
| tx_ba_tbl->ra); |
| } else { /* |
| * In case of failure, recreate the deleted stream in case |
| * we initiated the ADDBA |
| */ |
| if (INITIATOR_BIT(del_ba_param_set)) { |
| mwifiex_11n_create_tx_ba_stream_tbl(priv, |
| del_ba->peer_mac_addr, tid, |
| BA_STREAM_SETUP_INPROGRESS); |
| |
| tx_ba_tbl = mwifiex_11n_get_tx_ba_stream_status(priv, |
| BA_STREAM_SETUP_INPROGRESS); |
| if (tx_ba_tbl) |
| mwifiex_11n_delete_ba_stream_tbl(priv, |
| tx_ba_tbl->tid, tx_ba_tbl->ra, |
| TYPE_DELBA_SENT, true); |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * This function handles the command response of add a block |
| * ack request. |
| * |
| * Handling includes changing the header fields to CPU formats, checking |
| * the response success status and taking actions accordingly (delete the |
| * BA stream table in case of failure). |
| */ |
| int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv, |
| struct host_cmd_ds_command *resp) |
| { |
| int tid; |
| struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = |
| (struct host_cmd_ds_11n_addba_rsp *) &resp->params.add_ba_rsp; |
| struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl; |
| |
| add_ba_rsp->ssn = cpu_to_le16((le16_to_cpu(add_ba_rsp->ssn)) |
| & SSN_MASK); |
| |
| tid = (le16_to_cpu(add_ba_rsp->block_ack_param_set) |
| & IEEE80211_ADDBA_PARAM_TID_MASK) |
| >> BLOCKACKPARAM_TID_POS; |
| if (le16_to_cpu(add_ba_rsp->status_code) == BA_RESULT_SUCCESS) { |
| tx_ba_tbl = mwifiex_11n_get_tx_ba_stream_tbl(priv, tid, |
| add_ba_rsp->peer_mac_addr); |
| if (tx_ba_tbl) { |
| dev_dbg(priv->adapter->dev, "info: BA stream complete\n"); |
| tx_ba_tbl->ba_status = BA_STREAM_SETUP_COMPLETE; |
| } else { |
| dev_err(priv->adapter->dev, "BA stream not created\n"); |
| } |
| } else { |
| mwifiex_11n_delete_ba_stream_tbl(priv, tid, |
| add_ba_rsp->peer_mac_addr, |
| TYPE_DELBA_SENT, true); |
| if (add_ba_rsp->add_rsp_result != BA_RESULT_TIMEOUT) |
| priv->aggr_prio_tbl[tid].ampdu_ap = |
| BA_STREAM_NOT_ALLOWED; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * This function handles the command response of 11n configuration request. |
| * |
| * Handling includes changing the header fields into CPU format. |
| */ |
| int mwifiex_ret_11n_cfg(struct host_cmd_ds_command *resp, void *data_buf) |
| { |
| struct mwifiex_ds_11n_tx_cfg *tx_cfg; |
| struct host_cmd_ds_11n_cfg *htcfg = &resp->params.htcfg; |
| |
| if (data_buf) { |
| tx_cfg = (struct mwifiex_ds_11n_tx_cfg *) data_buf; |
| tx_cfg->tx_htcap = le16_to_cpu(htcfg->ht_tx_cap); |
| tx_cfg->tx_htinfo = le16_to_cpu(htcfg->ht_tx_info); |
| } |
| return 0; |
| } |
| |
| /* |
| * This function prepares command of reconfigure Tx buffer. |
| * |
| * Preparation includes - |
| * - Setting command ID, action and proper size |
| * - Setting Tx buffer size (for SET only) |
| * - Ensuring correct endian-ness |
| */ |
| int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv, |
| struct host_cmd_ds_command *cmd, int cmd_action, |
| void *data_buf) |
| { |
| struct host_cmd_ds_txbuf_cfg *tx_buf = &cmd->params.tx_buf; |
| u16 action = (u16) cmd_action; |
| u16 buf_size = *((u16 *) data_buf); |
| |
| cmd->command = cpu_to_le16(HostCmd_CMD_RECONFIGURE_TX_BUFF); |
| cmd->size = |
| cpu_to_le16(sizeof(struct host_cmd_ds_txbuf_cfg) + S_DS_GEN); |
| tx_buf->action = cpu_to_le16(action); |
| switch (action) { |
| case HostCmd_ACT_GEN_SET: |
| dev_dbg(priv->adapter->dev, "cmd: set tx_buf=%d\n", buf_size); |
| tx_buf->buff_size = cpu_to_le16(buf_size); |
| break; |
| case HostCmd_ACT_GEN_GET: |
| default: |
| tx_buf->buff_size = 0; |
| break; |
| } |
| return 0; |
| } |
| |
| /* |
| * This function prepares command of AMSDU aggregation control. |
| * |
| * Preparation includes - |
| * - Setting command ID, action and proper size |
| * - Setting AMSDU control parameters (for SET only) |
| * - Ensuring correct endian-ness |
| */ |
| int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd, |
| int cmd_action, void *data_buf) |
| { |
| struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl = |
| &cmd->params.amsdu_aggr_ctrl; |
| u16 action = (u16) cmd_action; |
| struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl = |
| (struct mwifiex_ds_11n_amsdu_aggr_ctrl *) data_buf; |
| |
| cmd->command = cpu_to_le16(HostCmd_CMD_AMSDU_AGGR_CTRL); |
| cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_amsdu_aggr_ctrl) |
| + S_DS_GEN); |
| amsdu_ctrl->action = cpu_to_le16(action); |
| switch (action) { |
| case HostCmd_ACT_GEN_SET: |
| amsdu_ctrl->enable = cpu_to_le16(aa_ctrl->enable); |
| amsdu_ctrl->curr_buf_size = 0; |
| break; |
| case HostCmd_ACT_GEN_GET: |
| default: |
| amsdu_ctrl->curr_buf_size = 0; |
| break; |
| } |
| return 0; |
| } |
| |
| /* |
| * This function handles the command response of AMSDU aggregation |
| * control request. |
| * |
| * Handling includes changing the header fields into CPU format. |
| */ |
| int mwifiex_ret_amsdu_aggr_ctrl(struct host_cmd_ds_command *resp, |
| void *data_buf) |
| { |
| struct mwifiex_ds_11n_amsdu_aggr_ctrl *amsdu_aggr_ctrl; |
| struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl = |
| &resp->params.amsdu_aggr_ctrl; |
| |
| if (data_buf) { |
| amsdu_aggr_ctrl = |
| (struct mwifiex_ds_11n_amsdu_aggr_ctrl *) data_buf; |
| amsdu_aggr_ctrl->enable = le16_to_cpu(amsdu_ctrl->enable); |
| amsdu_aggr_ctrl->curr_buf_size = |
| le16_to_cpu(amsdu_ctrl->curr_buf_size); |
| } |
| return 0; |
| } |
| |
| /* |
| * This function prepares 11n configuration command. |
| * |
| * Preparation includes - |
| * - Setting command ID, action and proper size |
| * - Setting HT Tx capability and HT Tx information fields |
| * - Ensuring correct endian-ness |
| */ |
| int mwifiex_cmd_11n_cfg(struct host_cmd_ds_command *cmd, |
| u16 cmd_action, void *data_buf) |
| { |
| struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg; |
| struct mwifiex_ds_11n_tx_cfg *txcfg = |
| (struct mwifiex_ds_11n_tx_cfg *) data_buf; |
| |
| cmd->command = cpu_to_le16(HostCmd_CMD_11N_CFG); |
| cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_11n_cfg) + S_DS_GEN); |
| htcfg->action = cpu_to_le16(cmd_action); |
| htcfg->ht_tx_cap = cpu_to_le16(txcfg->tx_htcap); |
| htcfg->ht_tx_info = cpu_to_le16(txcfg->tx_htinfo); |
| return 0; |
| } |
| |
| /* |
| * This function appends an 11n TLV to a buffer. |
| * |
| * Buffer allocation is responsibility of the calling |
| * function. No size validation is made here. |
| * |
| * The function fills up the following sections, if applicable - |
| * - HT capability IE |
| * - HT information IE (with channel list) |
| * - 20/40 BSS Coexistence IE |
| * - HT Extended Capabilities IE |
| */ |
| int |
| mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv, |
| struct mwifiex_bssdescriptor *bss_desc, |
| u8 **buffer) |
| { |
| struct mwifiex_ie_types_htcap *ht_cap; |
| struct mwifiex_ie_types_htinfo *ht_info; |
| struct mwifiex_ie_types_chan_list_param_set *chan_list; |
| struct mwifiex_ie_types_2040bssco *bss_co_2040; |
| struct mwifiex_ie_types_extcap *ext_cap; |
| int ret_len = 0; |
| struct ieee80211_supported_band *sband; |
| u8 radio_type; |
| |
| if (!buffer || !*buffer) |
| return ret_len; |
| |
| radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band); |
| sband = priv->wdev->wiphy->bands[radio_type]; |
| |
| if (bss_desc->bcn_ht_cap) { |
| ht_cap = (struct mwifiex_ie_types_htcap *) *buffer; |
| memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap)); |
| ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY); |
| ht_cap->header.len = |
| cpu_to_le16(sizeof(struct ieee80211_ht_cap)); |
| memcpy((u8 *) ht_cap + sizeof(struct mwifiex_ie_types_header), |
| (u8 *) bss_desc->bcn_ht_cap + |
| sizeof(struct ieee_types_header), |
| le16_to_cpu(ht_cap->header.len)); |
| |
| mwifiex_fill_cap_info(priv, radio_type, ht_cap); |
| |
| *buffer += sizeof(struct mwifiex_ie_types_htcap); |
| ret_len += sizeof(struct mwifiex_ie_types_htcap); |
| } |
| |
| if (bss_desc->bcn_ht_info) { |
| if (priv->bss_mode == NL80211_IFTYPE_ADHOC) { |
| ht_info = (struct mwifiex_ie_types_htinfo *) *buffer; |
| memset(ht_info, 0, |
| sizeof(struct mwifiex_ie_types_htinfo)); |
| ht_info->header.type = |
| cpu_to_le16(WLAN_EID_HT_INFORMATION); |
| ht_info->header.len = |
| cpu_to_le16(sizeof(struct ieee80211_ht_info)); |
| |
| memcpy((u8 *) ht_info + |
| sizeof(struct mwifiex_ie_types_header), |
| (u8 *) bss_desc->bcn_ht_info + |
| sizeof(struct ieee_types_header), |
| le16_to_cpu(ht_info->header.len)); |
| |
| if (!(sband->ht_cap.cap & |
| IEEE80211_HT_CAP_SUP_WIDTH_20_40)) |
| ht_info->ht_info.ht_param &= |
| ~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY | |
| IEEE80211_HT_PARAM_CHA_SEC_OFFSET); |
| |
| *buffer += sizeof(struct mwifiex_ie_types_htinfo); |
| ret_len += sizeof(struct mwifiex_ie_types_htinfo); |
| } |
| |
| chan_list = |
| (struct mwifiex_ie_types_chan_list_param_set *) *buffer; |
| memset(chan_list, 0, |
| sizeof(struct mwifiex_ie_types_chan_list_param_set)); |
| chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); |
| chan_list->header.len = cpu_to_le16( |
| sizeof(struct mwifiex_ie_types_chan_list_param_set) - |
| sizeof(struct mwifiex_ie_types_header)); |
| chan_list->chan_scan_param[0].chan_number = |
| bss_desc->bcn_ht_info->control_chan; |
| chan_list->chan_scan_param[0].radio_type = |
| mwifiex_band_to_radio_type((u8) bss_desc->bss_band); |
| |
| if ((sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) |
| && (bss_desc->bcn_ht_info->ht_param & |
| IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) |
| SET_SECONDARYCHAN(chan_list->chan_scan_param[0]. |
| radio_type, |
| (bss_desc->bcn_ht_info->ht_param & |
| IEEE80211_HT_PARAM_CHA_SEC_OFFSET)); |
| |
| *buffer += sizeof(struct mwifiex_ie_types_chan_list_param_set); |
| ret_len += sizeof(struct mwifiex_ie_types_chan_list_param_set); |
| } |
| |
| if (bss_desc->bcn_bss_co_2040) { |
| bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer; |
| memset(bss_co_2040, 0, |
| sizeof(struct mwifiex_ie_types_2040bssco)); |
| bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040); |
| bss_co_2040->header.len = |
| cpu_to_le16(sizeof(bss_co_2040->bss_co_2040)); |
| |
| memcpy((u8 *) bss_co_2040 + |
| sizeof(struct mwifiex_ie_types_header), |
| (u8 *) bss_desc->bcn_bss_co_2040 + |
| sizeof(struct ieee_types_header), |
| le16_to_cpu(bss_co_2040->header.len)); |
| |
| *buffer += sizeof(struct mwifiex_ie_types_2040bssco); |
| ret_len += sizeof(struct mwifiex_ie_types_2040bssco); |
| } |
| |
| if (bss_desc->bcn_ext_cap) { |
| ext_cap = (struct mwifiex_ie_types_extcap *) *buffer; |
| memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap)); |
| ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY); |
| ext_cap->header.len = cpu_to_le16(sizeof(ext_cap->ext_cap)); |
| |
| memcpy((u8 *) ext_cap + |
| sizeof(struct mwifiex_ie_types_header), |
| (u8 *) bss_desc->bcn_ext_cap + |
| sizeof(struct ieee_types_header), |
| le16_to_cpu(ext_cap->header.len)); |
| |
| *buffer += sizeof(struct mwifiex_ie_types_extcap); |
| ret_len += sizeof(struct mwifiex_ie_types_extcap); |
| } |
| |
| return ret_len; |
| } |
| |
| /* |
| * This function reconfigures the Tx buffer size in firmware. |
| * |
| * This function prepares a firmware command and issues it, if |
| * the current Tx buffer size is different from the one requested. |
| * Maximum configurable Tx buffer size is limited by the HT capability |
| * field value. |
| */ |
| void |
| mwifiex_cfg_tx_buf(struct mwifiex_private *priv, |
| struct mwifiex_bssdescriptor *bss_desc) |
| { |
| u16 max_amsdu = MWIFIEX_TX_DATA_BUF_SIZE_2K; |
| u16 tx_buf, curr_tx_buf_size = 0; |
| |
| if (bss_desc->bcn_ht_cap) { |
| if (le16_to_cpu(bss_desc->bcn_ht_cap->cap_info) & |
| IEEE80211_HT_CAP_MAX_AMSDU) |
| max_amsdu = MWIFIEX_TX_DATA_BUF_SIZE_8K; |
| else |
| max_amsdu = MWIFIEX_TX_DATA_BUF_SIZE_4K; |
| } |
| |
| tx_buf = min(priv->adapter->max_tx_buf_size, max_amsdu); |
| |
| dev_dbg(priv->adapter->dev, "info: max_amsdu=%d, max_tx_buf=%d\n", |
| max_amsdu, priv->adapter->max_tx_buf_size); |
| |
| if (priv->adapter->curr_tx_buf_size <= MWIFIEX_TX_DATA_BUF_SIZE_2K) |
| curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; |
| else if (priv->adapter->curr_tx_buf_size <= MWIFIEX_TX_DATA_BUF_SIZE_4K) |
| curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K; |
| else if (priv->adapter->curr_tx_buf_size <= MWIFIEX_TX_DATA_BUF_SIZE_8K) |
| curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_8K; |
| if (curr_tx_buf_size != tx_buf) |
| mwifiex_send_cmd_async(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF, |
| HostCmd_ACT_GEN_SET, 0, &tx_buf); |
| } |
| |
| /* |
| * This function checks if the given pointer is valid entry of |
| * Tx BA Stream table. |
| */ |
| static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv, |
| struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr) |
| { |
| struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; |
| |
| list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { |
| if (tx_ba_tsr_tbl == tx_tbl_ptr) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /* |
| * This function deletes the given entry in Tx BA Stream table. |
| * |
| * The function also performs a validity check on the supplied |
| * pointer before trying to delete. |
| */ |
| void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv, |
| struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl) |
| { |
| if (!tx_ba_tsr_tbl && |
| mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl)) |
| return; |
| |
| dev_dbg(priv->adapter->dev, "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl); |
| |
| list_del(&tx_ba_tsr_tbl->list); |
| |
| kfree(tx_ba_tsr_tbl); |
| } |
| |
| /* |
| * This function deletes all the entries in Tx BA Stream table. |
| */ |
| void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv) |
| { |
| int i; |
| struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); |
| list_for_each_entry_safe(del_tbl_ptr, tmp_node, |
| &priv->tx_ba_stream_tbl_ptr, list) |
| mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr); |
| spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); |
| |
| INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); |
| |
| for (i = 0; i < MAX_NUM_TID; ++i) |
| priv->aggr_prio_tbl[i].ampdu_ap = |
| priv->aggr_prio_tbl[i].ampdu_user; |
| } |
| |
| /* |
| * This function returns the pointer to an entry in BA Stream |
| * table which matches the given RA/TID pair. |
| */ |
| struct mwifiex_tx_ba_stream_tbl * |
| mwifiex_11n_get_tx_ba_stream_tbl(struct mwifiex_private *priv, |
| int tid, u8 *ra) |
| { |
| struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); |
| list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { |
| if ((!memcmp(tx_ba_tsr_tbl->ra, ra, ETH_ALEN)) |
| && (tx_ba_tsr_tbl->tid == tid)) { |
| spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, |
| flags); |
| return tx_ba_tsr_tbl; |
| } |
| } |
| spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); |
| return NULL; |
| } |
| |
| /* |
| * This function creates an entry in Tx BA stream table for the |
| * given RA/TID pair. |
| */ |
| void mwifiex_11n_create_tx_ba_stream_tbl(struct mwifiex_private *priv, |
| u8 *ra, int tid, |
| enum mwifiex_ba_status ba_status) |
| { |
| struct mwifiex_tx_ba_stream_tbl *new_node; |
| unsigned long flags; |
| |
| if (!mwifiex_11n_get_tx_ba_stream_tbl(priv, tid, ra)) { |
| new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl), |
| GFP_ATOMIC); |
| if (!new_node) { |
| dev_err(priv->adapter->dev, |
| "%s: failed to alloc new_node\n", __func__); |
| return; |
| } |
| |
| INIT_LIST_HEAD(&new_node->list); |
| |
| new_node->tid = tid; |
| new_node->ba_status = ba_status; |
| memcpy(new_node->ra, ra, ETH_ALEN); |
| |
| spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); |
| list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr); |
| spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); |
| } |
| } |
| |
| /* |
| * This function sends an add BA request to the given TID/RA pair. |
| */ |
| int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac) |
| { |
| struct host_cmd_ds_11n_addba_req add_ba_req; |
| static u8 dialog_tok; |
| int ret; |
| |
| dev_dbg(priv->adapter->dev, "cmd: %s: tid %d\n", __func__, tid); |
| |
| add_ba_req.block_ack_param_set = cpu_to_le16( |
| (u16) ((tid << BLOCKACKPARAM_TID_POS) | |
| (priv->add_ba_param. |
| tx_win_size << BLOCKACKPARAM_WINSIZE_POS) | |
| IMMEDIATE_BLOCK_ACK)); |
| add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout); |
| |
| ++dialog_tok; |
| |
| if (dialog_tok == 0) |
| dialog_tok = 1; |
| |
| add_ba_req.dialog_token = dialog_tok; |
| memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN); |
| |
| /* We don't wait for the response of this command */ |
| ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_11N_ADDBA_REQ, |
| 0, 0, &add_ba_req); |
| |
| return ret; |
| } |
| |
| /* |
| * This function sends a delete BA request to the given TID/RA pair. |
| */ |
| int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac, |
| int initiator) |
| { |
| struct host_cmd_ds_11n_delba delba; |
| int ret; |
| uint16_t del_ba_param_set; |
| |
| memset(&delba, 0, sizeof(delba)); |
| delba.del_ba_param_set = cpu_to_le16(tid << DELBA_TID_POS); |
| |
| del_ba_param_set = le16_to_cpu(delba.del_ba_param_set); |
| if (initiator) |
| del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK; |
| else |
| del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK; |
| |
| memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN); |
| |
| /* We don't wait for the response of this command */ |
| ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_11N_DELBA, |
| HostCmd_ACT_GEN_SET, 0, &delba); |
| |
| return ret; |
| } |
| |
| /* |
| * This function handles the command response of a delete BA request. |
| */ |
| void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba) |
| { |
| struct host_cmd_ds_11n_delba *cmd_del_ba = |
| (struct host_cmd_ds_11n_delba *) del_ba; |
| uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set); |
| int tid; |
| |
| tid = del_ba_param_set >> DELBA_TID_POS; |
| |
| mwifiex_11n_delete_ba_stream_tbl(priv, tid, cmd_del_ba->peer_mac_addr, |
| TYPE_DELBA_RECEIVE, |
| INITIATOR_BIT(del_ba_param_set)); |
| } |
| |
| /* |
| * This function retrieves the Rx reordering table. |
| */ |
| int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv, |
| struct mwifiex_ds_rx_reorder_tbl *buf) |
| { |
| int i; |
| struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf; |
| struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr; |
| int count = 0; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); |
| list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr, |
| list) { |
| rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid; |
| memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN); |
| rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win; |
| rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size; |
| for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) { |
| if (rx_reorder_tbl_ptr->rx_reorder_ptr[i]) |
| rx_reo_tbl->buffer[i] = true; |
| else |
| rx_reo_tbl->buffer[i] = false; |
| } |
| rx_reo_tbl++; |
| count++; |
| |
| if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED) |
| break; |
| } |
| spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); |
| |
| return count; |
| } |
| |
| /* |
| * This function retrieves the Tx BA stream table. |
| */ |
| int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv, |
| struct mwifiex_ds_tx_ba_stream_tbl *buf) |
| { |
| struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; |
| struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf; |
| int count = 0; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); |
| list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { |
| rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid; |
| dev_dbg(priv->adapter->dev, "data: %s tid=%d\n", |
| __func__, rx_reo_tbl->tid); |
| memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN); |
| rx_reo_tbl++; |
| count++; |
| if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED) |
| break; |
| } |
| spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); |
| |
| return count; |
| } |