/*
* Marvell Wireless LAN device driver: 802.11n
*
* 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"
/*
* 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.
*/
int mwifiex_fill_cap_info(struct mwifiex_private *priv, u8 radio_type,
struct ieee80211_ht_cap *ht_cap)
{
uint16_t ht_ext_cap = le16_to_cpu(ht_cap->extended_ht_cap_info);
struct ieee80211_supported_band *sband =
priv->wdev.wiphy->bands[radio_type];
if (WARN_ON_ONCE(!sband)) {
mwifiex_dbg(priv->adapter, ERROR, "Invalid radio type!\n");
return -EINVAL;
}
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->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 &&
(priv->adapter->sec_chan_offset !=
IEEE80211_HT_PARAM_CHA_SEC_NONE)))
/* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
SETHT_MCS32(ht_cap->mcs.rx_mask);
/* Clear RD responder bit */
ht_ext_cap &= ~IEEE80211_HT_EXT_CAP_RD_RESPONDER;
ht_cap->cap_info = cpu_to_le16(sband->ht_cap.cap);
ht_cap->extended_ht_cap_info = cpu_to_le16(ht_ext_cap);
if (ISSUPP_BEAMFORMING(priv->adapter->hw_dot_11n_dev_cap))
ht_cap->tx_BF_cap_info = cpu_to_le32(MWIFIEX_DEF_11N_TX_BF_CAP);
return 0;
}
/*
* 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_get_ba_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 = &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_del_ba_tbl(priv, tid, del_ba->peer_mac_addr,
TYPE_DELBA_SENT,
INITIATOR_BIT(del_ba_param_set));
tx_ba_tbl = mwifiex_get_ba_status(priv, BA_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))
return 0;
mwifiex_create_ba_tbl(priv, del_ba->peer_mac_addr, tid,
BA_SETUP_INPROGRESS);
tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS);
if (tx_ba_tbl)
mwifiex_del_ba_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, tid_down;
struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp;
struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
struct mwifiex_ra_list_tbl *ra_list;
u16 block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set);
add_ba_rsp->ssn = cpu_to_le16((le16_to_cpu(add_ba_rsp->ssn))
& SSN_MASK);
tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK)
>> BLOCKACKPARAM_TID_POS;
tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, add_ba_rsp->
peer_mac_addr);
if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) {
if (ra_list) {
ra_list->ba_status = BA_SETUP_NONE;
ra_list->amsdu_in_ampdu = false;
}
mwifiex_del_ba_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;
}
tx_ba_tbl = mwifiex_get_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr);
if (tx_ba_tbl) {
mwifiex_dbg(priv->adapter, EVENT, "info: BA stream complete\n");
tx_ba_tbl->ba_status = BA_SETUP_COMPLETE;
if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) &&
priv->add_ba_param.tx_amsdu &&
(priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
tx_ba_tbl->amsdu = true;
else
tx_ba_tbl->amsdu = false;
if (ra_list) {
ra_list->amsdu_in_ampdu = tx_ba_tbl->amsdu;
ra_list->ba_status = BA_SETUP_COMPLETE;
}
} else {
mwifiex_dbg(priv->adapter, ERROR, "BA stream not created\n");
}
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,
u16 *buf_size)
{
struct host_cmd_ds_txbuf_cfg *tx_buf = &cmd->params.tx_buf;
u16 action = (u16) cmd_action;
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:
mwifiex_dbg(priv->adapter, CMD,
"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,
struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl)
{
struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl =
&cmd->params.amsdu_aggr_ctrl;
u16 action = (u16) cmd_action;
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 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 mwifiex_private *priv,
struct host_cmd_ds_command *cmd, u16 cmd_action,
struct mwifiex_ds_11n_tx_cfg *txcfg)
{
struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg;
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);
if (priv->adapter->is_hw_11ac_capable)
htcfg->misc_config = cpu_to_le16(txcfg->misc_config);
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;
struct ieee_types_header *hdr;
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,
le16_to_cpu(ht_cap->header.len));
mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap);
*buffer += sizeof(struct mwifiex_ie_types_htcap);
ret_len += sizeof(struct mwifiex_ie_types_htcap);
}
if (bss_desc->bcn_ht_oper) {
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_OPERATION);
ht_info->header.len =
cpu_to_le16(
sizeof(struct ieee80211_ht_operation));
memcpy((u8 *) ht_info +
sizeof(struct mwifiex_ie_types_header),
(u8 *)bss_desc->bcn_ht_oper,
le16_to_cpu(ht_info->header.len));
if (!(sband->ht_cap.cap &
IEEE80211_HT_CAP_SUP_WIDTH_20_40))
ht_info->ht_oper.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_oper->primary_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_oper->ht_param &
IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)
SET_SECONDARYCHAN(chan_list->chan_scan_param[0].
radio_type,
(bss_desc->bcn_ht_oper->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),
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) {
hdr = (void *)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(hdr->len);
memcpy((u8 *)ext_cap->ext_capab,
bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header),
le16_to_cpu(ext_cap->header.len));
if (hdr->len > 3 &&
ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED)
priv->hs2_enabled = true;
else
priv->hs2_enabled = false;
*buffer += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
ret_len += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
}
return ret_len;
}
/*
* 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;
mwifiex_dbg(priv->adapter, INFO,
"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_get_ba_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 (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) &&
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_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
enum mwifiex_ba_status ba_status)
{
struct mwifiex_tx_ba_stream_tbl *new_node;
struct mwifiex_ra_list_tbl *ra_list;
unsigned long flags;
int tid_down;
if (!mwifiex_get_ba_tbl(priv, tid, ra)) {
new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl),
GFP_ATOMIC);
if (!new_node)
return;
tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, ra);
if (ra_list) {
ra_list->ba_status = ba_status;
ra_list->amsdu_in_ampdu = false;
}
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;
u32 tx_win_size = priv->add_ba_param.tx_win_size;
static u8 dialog_tok;
int ret;
unsigned long flags;
u16 block_ack_param_set;
mwifiex_dbg(priv->adapter, CMD, "cmd: %s: tid %d\n", __func__, tid);
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, peer_mac, ETH_ALEN)) {
struct mwifiex_sta_node *sta_ptr;
spin_lock_irqsave(&priv->sta_list_spinlock, flags);
sta_ptr = mwifiex_get_sta_entry(priv, peer_mac);
if (!sta_ptr) {
spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
mwifiex_dbg(priv->adapter, ERROR,
"BA setup with unknown TDLS peer %pM!\n",
peer_mac);
return -1;
}
if (sta_ptr->is_11ac_enabled)
tx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE;
spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
}
block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) |
tx_win_size << BLOCKACKPARAM_WINSIZE_POS |
IMMEDIATE_BLOCK_ACK);
/* enable AMSDU inside AMPDU */
if (priv->add_ba_param.tx_amsdu &&
(priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK;
add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set);
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(priv, HostCmd_CMD_11N_ADDBA_REQ,
0, 0, &add_ba_req, false);
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(priv, HostCmd_CMD_11N_DELBA,
HostCmd_ACT_GEN_SET, 0, &delba, false);
return ret;
}
/*
* This function sends delba to specific tid
*/
void mwifiex_11n_delba(struct mwifiex_private *priv, int tid)
{
struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr;
if (list_empty(&priv->rx_reorder_tbl_ptr)) {
dev_dbg(priv->adapter->dev,
"mwifiex_11n_delba: rx_reorder_tbl_ptr empty\n");
return;
}
list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) {
if (rx_reor_tbl_ptr->tid == tid) {
dev_dbg(priv->adapter->dev,
"Send delba to tid=%d, %pM\n",
tid, rx_reor_tbl_ptr->ta);
mwifiex_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0);
return;
}
}
}
/*
* 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_del_ba_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;
mwifiex_dbg(priv->adapter, DATA, "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->amsdu = tx_ba_tsr_tbl->amsdu;
rx_reo_tbl++;
count++;
if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED)
break;
}
spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
return count;
}
/*
* This function retrieves the entry for specific tx BA stream table by RA and
* deletes it.
*/
void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra)
{
struct mwifiex_tx_ba_stream_tbl *tbl, *tmp;
unsigned long flags;
if (!ra)
return;
spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list) {
if (!memcmp(tbl->ra, ra, ETH_ALEN)) {
spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock,
flags);
mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl);
spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
}
}
spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
return;
}
/* This function initializes the BlockACK setup information for given
* mwifiex_private structure.
*/
void mwifiex_set_ba_params(struct mwifiex_private *priv)
{
priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT;
if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
priv->add_ba_param.tx_win_size =
MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
priv->add_ba_param.rx_win_size =
MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE;
} else {
priv->add_ba_param.tx_win_size =
MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
priv->add_ba_param.rx_win_size =
MWIFIEX_STA_AMPDU_DEF_RXWINSIZE;
}
priv->add_ba_param.tx_amsdu = true;
priv->add_ba_param.rx_amsdu = true;
return;
}
u8 mwifiex_get_sec_chan_offset(int chan)
{
u8 sec_offset;
switch (chan) {
case 36:
case 44:
case 52:
case 60:
case 100:
case 108:
case 116:
case 124:
case 132:
case 140:
case 149:
case 157:
sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
break;
case 40:
case 48:
case 56:
case 64:
case 104:
case 112:
case 120:
case 128:
case 136:
case 144:
case 153:
case 161:
sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
break;
case 165:
default:
sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
break;
}
return sec_offset;
}
/* This function will send DELBA to entries in the priv's
* Tx BA stream table
*/
static void
mwifiex_send_delba_txbastream_tbl(struct mwifiex_private *priv, u8 tid)
{
struct mwifiex_adapter *adapter = priv->adapter;
struct mwifiex_tx_ba_stream_tbl *tx_ba_stream_tbl_ptr;
if (list_empty(&priv->tx_ba_stream_tbl_ptr))
return;
list_for_each_entry(tx_ba_stream_tbl_ptr,
&priv->tx_ba_stream_tbl_ptr, list) {
if (tx_ba_stream_tbl_ptr->ba_status == BA_SETUP_COMPLETE) {
if (tid == tx_ba_stream_tbl_ptr->tid) {
dev_dbg(adapter->dev,
"Tx:Send delba to tid=%d, %pM\n", tid,
tx_ba_stream_tbl_ptr->ra);
mwifiex_send_delba(priv,
tx_ba_stream_tbl_ptr->tid,
tx_ba_stream_tbl_ptr->ra, 1);
return;
}
}
}
}
/* This function updates all the tx_win_size
*/
void mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter *adapter)
{
u8 i;
u32 tx_win_size;
struct mwifiex_private *priv;
for (i = 0; i < adapter->priv_num; i++) {
if (!adapter->priv[i])
continue;
priv = adapter->priv[i];
tx_win_size = priv->add_ba_param.tx_win_size;
if (priv->bss_type == MWIFIEX_BSS_TYPE_STA)
priv->add_ba_param.tx_win_size =
MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P)
priv->add_ba_param.tx_win_size =
MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP)
priv->add_ba_param.tx_win_size =
MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
if (adapter->coex_win_size) {
if (adapter->coex_tx_win_size)
priv->add_ba_param.tx_win_size =
adapter->coex_tx_win_size;
}
if (tx_win_size != priv->add_ba_param.tx_win_size) {
if (!priv->media_connected)
continue;
for (i = 0; i < MAX_NUM_TID; i++)
mwifiex_send_delba_txbastream_tbl(priv, i);
}
}
}