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linux_dsm_epyc7002/drivers/net/wireless/mwifiex/11ac.c
Amitkumar Karwar cf831ffe44 mwifiex: fix IE parsing issues 
IE's are parsed from beacon buffer and stored locally using
mwifiex_update_bss_desc_with_ie() function.
Sometimes the local pointers point to the data inside IE, but
while using them it is assumed that they are pointing to the IE
itself.

These issues are fixed in this patch.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-04-22 15:06:30 -04:00

383 lines
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/*
* Marvell Wireless LAN device driver: 802.11ac
*
* Copyright (C) 2013, 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 "fw.h"
#include "main.h"
#include "11ac.h"
/* Tables of the MCS map to the highest data rate (in Mbps) supported
* for long GI.
*/
static const u16 max_rate_lgi_80MHZ[8][3] = {
{0x124, 0x15F, 0x186}, /* NSS = 1 */
{0x249, 0x2BE, 0x30C}, /* NSS = 2 */
{0x36D, 0x41D, 0x492}, /* NSS = 3 */
{0x492, 0x57C, 0x618}, /* NSS = 4 */
{0x5B6, 0x6DB, 0x79E}, /* NSS = 5 */
{0x6DB, 0x83A, 0x0}, /* NSS = 6 */
{0x7FF, 0x999, 0xAAA}, /* NSS = 7 */
{0x924, 0xAF8, 0xC30} /* NSS = 8 */
};
static const u16 max_rate_lgi_160MHZ[8][3] = {
{0x249, 0x2BE, 0x30C}, /* NSS = 1 */
{0x492, 0x57C, 0x618}, /* NSS = 2 */
{0x6DB, 0x83A, 0x0}, /* NSS = 3 */
{0x924, 0xAF8, 0xC30}, /* NSS = 4 */
{0xB6D, 0xDB6, 0xF3C}, /* NSS = 5 */
{0xDB6, 0x1074, 0x1248}, /* NSS = 6 */
{0xFFF, 0x1332, 0x1554}, /* NSS = 7 */
{0x1248, 0x15F0, 0x1860} /* NSS = 8 */
};
/* This function converts the 2-bit MCS map to the highest long GI
* VHT data rate.
*/
static u16
mwifiex_convert_mcsmap_to_maxrate(struct mwifiex_private *priv,
u8 bands, u16 mcs_map)
{
u8 i, nss, mcs;
u16 max_rate = 0;
u32 usr_vht_cap_info = 0;
struct mwifiex_adapter *adapter = priv->adapter;
if (bands & BAND_AAC)
usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a;
else
usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg;
/* find the max NSS supported */
nss = 1;
for (i = 1; i <= 8; i++) {
mcs = GET_VHTNSSMCS(mcs_map, i);
if (mcs < IEEE80211_VHT_MCS_NOT_SUPPORTED)
nss = i;
}
mcs = GET_VHTNSSMCS(mcs_map, nss);
/* if mcs is 3, nss must be 1 (NSS = 1). Default mcs to MCS 0~9 */
if (mcs == IEEE80211_VHT_MCS_NOT_SUPPORTED)
mcs = IEEE80211_VHT_MCS_SUPPORT_0_9;
if (GET_VHTCAP_CHWDSET(usr_vht_cap_info)) {
/* support 160 MHz */
max_rate = max_rate_lgi_160MHZ[nss - 1][mcs];
if (!max_rate)
/* MCS9 is not supported in NSS6 */
max_rate = max_rate_lgi_160MHZ[nss - 1][mcs - 1];
} else {
max_rate = max_rate_lgi_80MHZ[nss - 1][mcs];
if (!max_rate)
/* MCS9 is not supported in NSS3 */
max_rate = max_rate_lgi_80MHZ[nss - 1][mcs - 1];
}
return max_rate;
}
static void
mwifiex_fill_vht_cap_info(struct mwifiex_private *priv,
struct ieee80211_vht_cap *vht_cap, u8 bands)
{
struct mwifiex_adapter *adapter = priv->adapter;
if (bands & BAND_A)
vht_cap->vht_cap_info =
cpu_to_le32(adapter->usr_dot_11ac_dev_cap_a);
else
vht_cap->vht_cap_info =
cpu_to_le32(adapter->usr_dot_11ac_dev_cap_bg);
}
void mwifiex_fill_vht_cap_tlv(struct mwifiex_private *priv,
struct ieee80211_vht_cap *vht_cap, u8 bands)
{
struct mwifiex_adapter *adapter = priv->adapter;
u16 mcs_map_user, mcs_map_resp, mcs_map_result;
u16 mcs_user, mcs_resp, nss, tmp;
/* Fill VHT cap info */
mwifiex_fill_vht_cap_info(priv, vht_cap, bands);
/* rx MCS Set: find the minimum of the user rx mcs and ap rx mcs */
mcs_map_user = GET_DEVRXMCSMAP(adapter->usr_dot_11ac_mcs_support);
mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.rx_mcs_map);
mcs_map_result = 0;
for (nss = 1; nss <= 8; nss++) {
mcs_user = GET_VHTNSSMCS(mcs_map_user, nss);
mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss);
if ((mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED) ||
(mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED))
SET_VHTNSSMCS(mcs_map_result, nss,
IEEE80211_VHT_MCS_NOT_SUPPORTED);
else
SET_VHTNSSMCS(mcs_map_result, nss,
min(mcs_user, mcs_resp));
}
vht_cap->supp_mcs.rx_mcs_map = cpu_to_le16(mcs_map_result);
tmp = mwifiex_convert_mcsmap_to_maxrate(priv, bands, mcs_map_result);
vht_cap->supp_mcs.rx_highest = cpu_to_le16(tmp);
/* tx MCS Set: find the minimum of the user tx mcs and ap tx mcs */
mcs_map_user = GET_DEVTXMCSMAP(adapter->usr_dot_11ac_mcs_support);
mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
mcs_map_result = 0;
for (nss = 1; nss <= 8; nss++) {
mcs_user = GET_VHTNSSMCS(mcs_map_user, nss);
mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss);
if ((mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED) ||
(mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED))
SET_VHTNSSMCS(mcs_map_result, nss,
IEEE80211_VHT_MCS_NOT_SUPPORTED);
else
SET_VHTNSSMCS(mcs_map_result, nss,
min(mcs_user, mcs_resp));
}
vht_cap->supp_mcs.tx_mcs_map = cpu_to_le16(mcs_map_result);
tmp = mwifiex_convert_mcsmap_to_maxrate(priv, bands, mcs_map_result);
vht_cap->supp_mcs.tx_highest = cpu_to_le16(tmp);
return;
}
int mwifiex_cmd_append_11ac_tlv(struct mwifiex_private *priv,
struct mwifiex_bssdescriptor *bss_desc,
u8 **buffer)
{
struct mwifiex_ie_types_vhtcap *vht_cap;
struct mwifiex_ie_types_oper_mode_ntf *oper_ntf;
struct ieee_types_oper_mode_ntf *ieee_oper_ntf;
struct mwifiex_ie_types_vht_oper *vht_op;
struct mwifiex_adapter *adapter = priv->adapter;
u8 supp_chwd_set;
u32 usr_vht_cap_info;
int ret_len = 0;
if (bss_desc->bss_band & BAND_A)
usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a;
else
usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg;
/* VHT Capabilities IE */
if (bss_desc->bcn_vht_cap) {
vht_cap = (struct mwifiex_ie_types_vhtcap *)*buffer;
memset(vht_cap, 0, sizeof(*vht_cap));
vht_cap->header.type = cpu_to_le16(WLAN_EID_VHT_CAPABILITY);
vht_cap->header.len =
cpu_to_le16(sizeof(struct ieee80211_vht_cap));
memcpy((u8 *)vht_cap + sizeof(struct mwifiex_ie_types_header),
(u8 *)bss_desc->bcn_vht_cap,
le16_to_cpu(vht_cap->header.len));
mwifiex_fill_vht_cap_tlv(priv, &vht_cap->vht_cap,
bss_desc->bss_band);
*buffer += sizeof(*vht_cap);
ret_len += sizeof(*vht_cap);
}
/* VHT Operation IE */
if (bss_desc->bcn_vht_oper) {
if (priv->bss_mode == NL80211_IFTYPE_STATION) {
vht_op = (struct mwifiex_ie_types_vht_oper *)*buffer;
memset(vht_op, 0, sizeof(*vht_op));
vht_op->header.type =
cpu_to_le16(WLAN_EID_VHT_OPERATION);
vht_op->header.len = cpu_to_le16(sizeof(*vht_op) -
sizeof(struct mwifiex_ie_types_header));
memcpy((u8 *)vht_op +
sizeof(struct mwifiex_ie_types_header),
(u8 *)bss_desc->bcn_vht_oper,
le16_to_cpu(vht_op->header.len));
/* negotiate the channel width and central freq
* and keep the central freq as the peer suggests
*/
supp_chwd_set = GET_VHTCAP_CHWDSET(usr_vht_cap_info);
switch (supp_chwd_set) {
case 0:
vht_op->chan_width =
min_t(u8, IEEE80211_VHT_CHANWIDTH_80MHZ,
bss_desc->bcn_vht_oper->chan_width);
break;
case 1:
vht_op->chan_width =
min_t(u8, IEEE80211_VHT_CHANWIDTH_160MHZ,
bss_desc->bcn_vht_oper->chan_width);
break;
case 2:
vht_op->chan_width =
min_t(u8, IEEE80211_VHT_CHANWIDTH_80P80MHZ,
bss_desc->bcn_vht_oper->chan_width);
break;
default:
vht_op->chan_width =
IEEE80211_VHT_CHANWIDTH_USE_HT;
break;
}
*buffer += sizeof(*vht_op);
ret_len += sizeof(*vht_op);
}
}
/* Operating Mode Notification IE */
if (bss_desc->oper_mode) {
ieee_oper_ntf = bss_desc->oper_mode;
oper_ntf = (void *)*buffer;
memset(oper_ntf, 0, sizeof(*oper_ntf));
oper_ntf->header.type = cpu_to_le16(WLAN_EID_OPMODE_NOTIF);
oper_ntf->header.len = cpu_to_le16(sizeof(u8));
oper_ntf->oper_mode = ieee_oper_ntf->oper_mode;
*buffer += sizeof(*oper_ntf);
ret_len += sizeof(*oper_ntf);
}
return ret_len;
}
int mwifiex_cmd_11ac_cfg(struct mwifiex_private *priv,
struct host_cmd_ds_command *cmd, u16 cmd_action,
struct mwifiex_11ac_vht_cfg *cfg)
{
struct host_cmd_11ac_vht_cfg *vhtcfg = &cmd->params.vht_cfg;
cmd->command = cpu_to_le16(HostCmd_CMD_11AC_CFG);
cmd->size = cpu_to_le16(sizeof(struct host_cmd_11ac_vht_cfg) +
S_DS_GEN);
vhtcfg->action = cpu_to_le16(cmd_action);
vhtcfg->band_config = cfg->band_config;
vhtcfg->misc_config = cfg->misc_config;
vhtcfg->cap_info = cpu_to_le32(cfg->cap_info);
vhtcfg->mcs_tx_set = cpu_to_le32(cfg->mcs_tx_set);
vhtcfg->mcs_rx_set = cpu_to_le32(cfg->mcs_rx_set);
return 0;
}
/* This function initializes the BlockACK setup information for given
* mwifiex_private structure for 11ac enabled networks.
*/
void mwifiex_set_11ac_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_11AC_UAP_AMPDU_DEF_TXWINSIZE;
priv->add_ba_param.rx_win_size =
MWIFIEX_11AC_UAP_AMPDU_DEF_RXWINSIZE;
} else {
priv->add_ba_param.tx_win_size =
MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE;
priv->add_ba_param.rx_win_size =
MWIFIEX_11AC_STA_AMPDU_DEF_RXWINSIZE;
}
return;
}
bool mwifiex_is_bss_in_11ac_mode(struct mwifiex_private *priv)
{
struct mwifiex_bssdescriptor *bss_desc;
struct ieee80211_vht_operation *vht_oper;
bss_desc = &priv->curr_bss_params.bss_descriptor;
vht_oper = bss_desc->bcn_vht_oper;
if (!bss_desc->bcn_vht_cap || !vht_oper)
return false;
if (vht_oper->chan_width == IEEE80211_VHT_CHANWIDTH_USE_HT)
return false;
return true;
}
u8 mwifiex_get_center_freq_index(struct mwifiex_private *priv, u8 band,
u32 pri_chan, u8 chan_bw)
{
u8 center_freq_idx = 0;
if (band & BAND_AAC) {
switch (pri_chan) {
case 36:
case 40:
case 44:
case 48:
if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ)
center_freq_idx = 42;
break;
case 52:
case 56:
case 60:
case 64:
if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ)
center_freq_idx = 58;
else if (chan_bw == IEEE80211_VHT_CHANWIDTH_160MHZ)
center_freq_idx = 50;
break;
case 100:
case 104:
case 108:
case 112:
if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ)
center_freq_idx = 106;
break;
case 116:
case 120:
case 124:
case 128:
if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ)
center_freq_idx = 122;
else if (chan_bw == IEEE80211_VHT_CHANWIDTH_160MHZ)
center_freq_idx = 114;
break;
case 132:
case 136:
case 140:
case 144:
if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ)
center_freq_idx = 138;
break;
case 149:
case 153:
case 157:
case 161:
if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ)
center_freq_idx = 155;
break;
default:
center_freq_idx = 42;
}
}
return center_freq_idx;
}
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