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mac.c
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// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
* Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
*/
#include <net/mac80211.h>
#include <linux/etherdevice.h>
#include "mac.h"
#include "core.h"
#include "debug.h"
#include "wmi.h"
#include "hw.h"
#include "dp_tx.h"
#include "dp_rx.h"
#include "testmode.h"
#include "peer.h"
#include "debugfs_sta.h"
#define CHAN2G(_channel, _freq, _flags) { \
.band = NL80211_BAND_2GHZ, \
.hw_value = (_channel), \
.center_freq = (_freq), \
.flags = (_flags), \
.max_antenna_gain = 0, \
.max_power = 30, \
}
#define CHAN5G(_channel, _freq, _flags) { \
.band = NL80211_BAND_5GHZ, \
.hw_value = (_channel), \
.center_freq = (_freq), \
.flags = (_flags), \
.max_antenna_gain = 0, \
.max_power = 30, \
}
#define CHAN6G(_channel, _freq, _flags) { \
.band = NL80211_BAND_6GHZ, \
.hw_value = (_channel), \
.center_freq = (_freq), \
.flags = (_flags), \
.max_antenna_gain = 0, \
.max_power = 30, \
}
static const struct ieee80211_channel ath11k_2ghz_channels[] = {
CHAN2G(1, 2412, 0),
CHAN2G(2, 2417, 0),
CHAN2G(3, 2422, 0),
CHAN2G(4, 2427, 0),
CHAN2G(5, 2432, 0),
CHAN2G(6, 2437, 0),
CHAN2G(7, 2442, 0),
CHAN2G(8, 2447, 0),
CHAN2G(9, 2452, 0),
CHAN2G(10, 2457, 0),
CHAN2G(11, 2462, 0),
CHAN2G(12, 2467, 0),
CHAN2G(13, 2472, 0),
CHAN2G(14, 2484, 0),
};
static const struct ieee80211_channel ath11k_5ghz_channels[] = {
CHAN5G(36, 5180, 0),
CHAN5G(40, 5200, 0),
CHAN5G(44, 5220, 0),
CHAN5G(48, 5240, 0),
CHAN5G(52, 5260, 0),
CHAN5G(56, 5280, 0),
CHAN5G(60, 5300, 0),
CHAN5G(64, 5320, 0),
CHAN5G(100, 5500, 0),
CHAN5G(104, 5520, 0),
CHAN5G(108, 5540, 0),
CHAN5G(112, 5560, 0),
CHAN5G(116, 5580, 0),
CHAN5G(120, 5600, 0),
CHAN5G(124, 5620, 0),
CHAN5G(128, 5640, 0),
CHAN5G(132, 5660, 0),
CHAN5G(136, 5680, 0),
CHAN5G(140, 5700, 0),
CHAN5G(144, 5720, 0),
CHAN5G(149, 5745, 0),
CHAN5G(153, 5765, 0),
CHAN5G(157, 5785, 0),
CHAN5G(161, 5805, 0),
CHAN5G(165, 5825, 0),
CHAN5G(169, 5845, 0),
CHAN5G(173, 5865, 0),
};
static const struct ieee80211_channel ath11k_6ghz_channels[] = {
CHAN6G(1, 5955, 0),
CHAN6G(5, 5975, 0),
CHAN6G(9, 5995, 0),
CHAN6G(13, 6015, 0),
CHAN6G(17, 6035, 0),
CHAN6G(21, 6055, 0),
CHAN6G(25, 6075, 0),
CHAN6G(29, 6095, 0),
CHAN6G(33, 6115, 0),
CHAN6G(37, 6135, 0),
CHAN6G(41, 6155, 0),
CHAN6G(45, 6175, 0),
CHAN6G(49, 6195, 0),
CHAN6G(53, 6215, 0),
CHAN6G(57, 6235, 0),
CHAN6G(61, 6255, 0),
CHAN6G(65, 6275, 0),
CHAN6G(69, 6295, 0),
CHAN6G(73, 6315, 0),
CHAN6G(77, 6335, 0),
CHAN6G(81, 6355, 0),
CHAN6G(85, 6375, 0),
CHAN6G(89, 6395, 0),
CHAN6G(93, 6415, 0),
CHAN6G(97, 6435, 0),
CHAN6G(101, 6455, 0),
CHAN6G(105, 6475, 0),
CHAN6G(109, 6495, 0),
CHAN6G(113, 6515, 0),
CHAN6G(117, 6535, 0),
CHAN6G(121, 6555, 0),
CHAN6G(125, 6575, 0),
CHAN6G(129, 6595, 0),
CHAN6G(133, 6615, 0),
CHAN6G(137, 6635, 0),
CHAN6G(141, 6655, 0),
CHAN6G(145, 6675, 0),
CHAN6G(149, 6695, 0),
CHAN6G(153, 6715, 0),
CHAN6G(157, 6735, 0),
CHAN6G(161, 6755, 0),
CHAN6G(165, 6775, 0),
CHAN6G(169, 6795, 0),
CHAN6G(173, 6815, 0),
CHAN6G(177, 6835, 0),
CHAN6G(181, 6855, 0),
CHAN6G(185, 6875, 0),
CHAN6G(189, 6895, 0),
CHAN6G(193, 6915, 0),
CHAN6G(197, 6935, 0),
CHAN6G(201, 6955, 0),
CHAN6G(205, 6975, 0),
CHAN6G(209, 6995, 0),
CHAN6G(213, 7015, 0),
CHAN6G(217, 7035, 0),
CHAN6G(221, 7055, 0),
CHAN6G(225, 7075, 0),
CHAN6G(229, 7095, 0),
CHAN6G(233, 7115, 0),
};
static struct ieee80211_rate ath11k_legacy_rates[] = {
{ .bitrate = 10,
.hw_value = ATH11K_HW_RATE_CCK_LP_1M },
{ .bitrate = 20,
.hw_value = ATH11K_HW_RATE_CCK_LP_2M,
.hw_value_short = ATH11K_HW_RATE_CCK_SP_2M,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 55,
.hw_value = ATH11K_HW_RATE_CCK_LP_5_5M,
.hw_value_short = ATH11K_HW_RATE_CCK_SP_5_5M,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 110,
.hw_value = ATH11K_HW_RATE_CCK_LP_11M,
.hw_value_short = ATH11K_HW_RATE_CCK_SP_11M,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 60, .hw_value = ATH11K_HW_RATE_OFDM_6M },
{ .bitrate = 90, .hw_value = ATH11K_HW_RATE_OFDM_9M },
{ .bitrate = 120, .hw_value = ATH11K_HW_RATE_OFDM_12M },
{ .bitrate = 180, .hw_value = ATH11K_HW_RATE_OFDM_18M },
{ .bitrate = 240, .hw_value = ATH11K_HW_RATE_OFDM_24M },
{ .bitrate = 360, .hw_value = ATH11K_HW_RATE_OFDM_36M },
{ .bitrate = 480, .hw_value = ATH11K_HW_RATE_OFDM_48M },
{ .bitrate = 540, .hw_value = ATH11K_HW_RATE_OFDM_54M },
};
static const int
ath11k_phymodes[NUM_NL80211_BANDS][ATH11K_CHAN_WIDTH_NUM] = {
[NL80211_BAND_2GHZ] = {
[NL80211_CHAN_WIDTH_5] = MODE_UNKNOWN,
[NL80211_CHAN_WIDTH_10] = MODE_UNKNOWN,
[NL80211_CHAN_WIDTH_20_NOHT] = MODE_11AX_HE20_2G,
[NL80211_CHAN_WIDTH_20] = MODE_11AX_HE20_2G,
[NL80211_CHAN_WIDTH_40] = MODE_11AX_HE40_2G,
[NL80211_CHAN_WIDTH_80] = MODE_11AX_HE80_2G,
[NL80211_CHAN_WIDTH_80P80] = MODE_UNKNOWN,
[NL80211_CHAN_WIDTH_160] = MODE_UNKNOWN,
},
[NL80211_BAND_5GHZ] = {
[NL80211_CHAN_WIDTH_5] = MODE_UNKNOWN,
[NL80211_CHAN_WIDTH_10] = MODE_UNKNOWN,
[NL80211_CHAN_WIDTH_20_NOHT] = MODE_11AX_HE20,
[NL80211_CHAN_WIDTH_20] = MODE_11AX_HE20,
[NL80211_CHAN_WIDTH_40] = MODE_11AX_HE40,
[NL80211_CHAN_WIDTH_80] = MODE_11AX_HE80,
[NL80211_CHAN_WIDTH_160] = MODE_11AX_HE160,
[NL80211_CHAN_WIDTH_80P80] = MODE_11AX_HE80_80,
},
[NL80211_BAND_6GHZ] = {
[NL80211_CHAN_WIDTH_5] = MODE_UNKNOWN,
[NL80211_CHAN_WIDTH_10] = MODE_UNKNOWN,
[NL80211_CHAN_WIDTH_20_NOHT] = MODE_11AX_HE20,
[NL80211_CHAN_WIDTH_20] = MODE_11AX_HE20,
[NL80211_CHAN_WIDTH_40] = MODE_11AX_HE40,
[NL80211_CHAN_WIDTH_80] = MODE_11AX_HE80,
[NL80211_CHAN_WIDTH_160] = MODE_11AX_HE160,
[NL80211_CHAN_WIDTH_80P80] = MODE_11AX_HE80_80,
},
};
const struct htt_rx_ring_tlv_filter ath11k_mac_mon_status_filter_default = {
.rx_filter = HTT_RX_FILTER_TLV_FLAGS_MPDU_START |
HTT_RX_FILTER_TLV_FLAGS_PPDU_END |
HTT_RX_FILTER_TLV_FLAGS_PPDU_END_STATUS_DONE,
.pkt_filter_flags0 = HTT_RX_FP_MGMT_FILTER_FLAGS0,
.pkt_filter_flags1 = HTT_RX_FP_MGMT_FILTER_FLAGS1,
.pkt_filter_flags2 = HTT_RX_FP_CTRL_FILTER_FLASG2,
.pkt_filter_flags3 = HTT_RX_FP_DATA_FILTER_FLASG3 |
HTT_RX_FP_CTRL_FILTER_FLASG3
};
#define ATH11K_MAC_FIRST_OFDM_RATE_IDX 4
#define ath11k_g_rates ath11k_legacy_rates
#define ath11k_g_rates_size (ARRAY_SIZE(ath11k_legacy_rates))
#define ath11k_a_rates (ath11k_legacy_rates + 4)
#define ath11k_a_rates_size (ARRAY_SIZE(ath11k_legacy_rates) - 4)
#define ATH11K_MAC_SCAN_TIMEOUT_MSECS 200 /* in msecs */
static const u32 ath11k_smps_map[] = {
[WLAN_HT_CAP_SM_PS_STATIC] = WMI_PEER_SMPS_STATIC,
[WLAN_HT_CAP_SM_PS_DYNAMIC] = WMI_PEER_SMPS_DYNAMIC,
[WLAN_HT_CAP_SM_PS_INVALID] = WMI_PEER_SMPS_PS_NONE,
[WLAN_HT_CAP_SM_PS_DISABLED] = WMI_PEER_SMPS_PS_NONE,
};
static int ath11k_start_vdev_delay(struct ieee80211_hw *hw,
struct ieee80211_vif *vif);
u8 ath11k_mac_bw_to_mac80211_bw(u8 bw)
{
u8 ret = 0;
switch (bw) {
case ATH11K_BW_20:
ret = RATE_INFO_BW_20;
break;
case ATH11K_BW_40:
ret = RATE_INFO_BW_40;
break;
case ATH11K_BW_80:
ret = RATE_INFO_BW_80;
break;
case ATH11K_BW_160:
ret = RATE_INFO_BW_160;
break;
}
return ret;
}
enum ath11k_supported_bw ath11k_mac_mac80211_bw_to_ath11k_bw(enum rate_info_bw bw)
{
switch (bw) {
case RATE_INFO_BW_20:
return ATH11K_BW_20;
case RATE_INFO_BW_40:
return ATH11K_BW_40;
case RATE_INFO_BW_80:
return ATH11K_BW_80;
case RATE_INFO_BW_160:
return ATH11K_BW_160;
default:
return ATH11K_BW_20;
}
}
int ath11k_mac_hw_ratecode_to_legacy_rate(u8 hw_rc, u8 preamble, u8 *rateidx,
u16 *rate)
{
/* As default, it is OFDM rates */
int i = ATH11K_MAC_FIRST_OFDM_RATE_IDX;
int max_rates_idx = ath11k_g_rates_size;
if (preamble == WMI_RATE_PREAMBLE_CCK) {
hw_rc &= ~ATH11k_HW_RATECODE_CCK_SHORT_PREAM_MASK;
i = 0;
max_rates_idx = ATH11K_MAC_FIRST_OFDM_RATE_IDX;
}
while (i < max_rates_idx) {
if (hw_rc == ath11k_legacy_rates[i].hw_value) {
*rateidx = i;
*rate = ath11k_legacy_rates[i].bitrate;
return 0;
}
i++;
}
return -EINVAL;
}
static int get_num_chains(u32 mask)
{
int num_chains = 0;
while (mask) {
if (mask & BIT(0))
num_chains++;
mask >>= 1;
}
return num_chains;
}
u8 ath11k_mac_bitrate_to_idx(const struct ieee80211_supported_band *sband,
u32 bitrate)
{
int i;
for (i = 0; i < sband->n_bitrates; i++)
if (sband->bitrates[i].bitrate == bitrate)
return i;
return 0;
}
static u32
ath11k_mac_max_ht_nss(const u8 ht_mcs_mask[IEEE80211_HT_MCS_MASK_LEN])
{
int nss;
for (nss = IEEE80211_HT_MCS_MASK_LEN - 1; nss >= 0; nss--)
if (ht_mcs_mask[nss])
return nss + 1;
return 1;
}
static u32
ath11k_mac_max_vht_nss(const u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
{
int nss;
for (nss = NL80211_VHT_NSS_MAX - 1; nss >= 0; nss--)
if (vht_mcs_mask[nss])
return nss + 1;
return 1;
}
static u8 ath11k_parse_mpdudensity(u8 mpdudensity)
{
/* 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
* 0 for no restriction
* 1 for 1/4 us
* 2 for 1/2 us
* 3 for 1 us
* 4 for 2 us
* 5 for 4 us
* 6 for 8 us
* 7 for 16 us
*/
switch (mpdudensity) {
case 0:
return 0;
case 1:
case 2:
case 3:
/* Our lower layer calculations limit our precision to
* 1 microsecond
*/
return 1;
case 4:
return 2;
case 5:
return 4;
case 6:
return 8;
case 7:
return 16;
default:
return 0;
}
}
static int ath11k_mac_vif_chan(struct ieee80211_vif *vif,
struct cfg80211_chan_def *def)
{
struct ieee80211_chanctx_conf *conf;
rcu_read_lock();
conf = rcu_dereference(vif->chanctx_conf);
if (!conf) {
rcu_read_unlock();
return -ENOENT;
}
*def = conf->def;
rcu_read_unlock();
return 0;
}
static bool ath11k_mac_bitrate_is_cck(int bitrate)
{
switch (bitrate) {
case 10:
case 20:
case 55:
case 110:
return true;
}
return false;
}
u8 ath11k_mac_hw_rate_to_idx(const struct ieee80211_supported_band *sband,
u8 hw_rate, bool cck)
{
const struct ieee80211_rate *rate;
int i;
for (i = 0; i < sband->n_bitrates; i++) {
rate = &sband->bitrates[i];
if (ath11k_mac_bitrate_is_cck(rate->bitrate) != cck)
continue;
if (rate->hw_value == hw_rate)
return i;
else if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE &&
rate->hw_value_short == hw_rate)
return i;
}
return 0;
}
static u8 ath11k_mac_bitrate_to_rate(int bitrate)
{
return DIV_ROUND_UP(bitrate, 5) |
(ath11k_mac_bitrate_is_cck(bitrate) ? BIT(7) : 0);
}
static void ath11k_get_arvif_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct ath11k_vif_iter *arvif_iter = data;
struct ath11k_vif *arvif = (void *)vif->drv_priv;
if (arvif->vdev_id == arvif_iter->vdev_id)
arvif_iter->arvif = arvif;
}
struct ath11k_vif *ath11k_mac_get_arvif(struct ath11k *ar, u32 vdev_id)
{
struct ath11k_vif_iter arvif_iter;
u32 flags;
memset(&arvif_iter, 0, sizeof(struct ath11k_vif_iter));
arvif_iter.vdev_id = vdev_id;
flags = IEEE80211_IFACE_ITER_RESUME_ALL;
ieee80211_iterate_active_interfaces_atomic(ar->hw,
flags,
ath11k_get_arvif_iter,
&arvif_iter);
if (!arvif_iter.arvif) {
ath11k_warn(ar->ab, "No VIF found for vdev %d\n", vdev_id);
return NULL;
}
return arvif_iter.arvif;
}
struct ath11k_vif *ath11k_mac_get_arvif_by_vdev_id(struct ath11k_base *ab,
u32 vdev_id)
{
int i;
struct ath11k_pdev *pdev;
struct ath11k_vif *arvif;
for (i = 0; i < ab->num_radios; i++) {
pdev = rcu_dereference(ab->pdevs_active[i]);
if (pdev && pdev->ar) {
arvif = ath11k_mac_get_arvif(pdev->ar, vdev_id);
if (arvif)
return arvif;
}
}
return NULL;
}
struct ath11k *ath11k_mac_get_ar_by_vdev_id(struct ath11k_base *ab, u32 vdev_id)
{
int i;
struct ath11k_pdev *pdev;
for (i = 0; i < ab->num_radios; i++) {
pdev = rcu_dereference(ab->pdevs_active[i]);
if (pdev && pdev->ar) {
if (pdev->ar->allocated_vdev_map & (1LL << vdev_id))
return pdev->ar;
}
}
return NULL;
}
struct ath11k *ath11k_mac_get_ar_by_pdev_id(struct ath11k_base *ab, u32 pdev_id)
{
int i;
struct ath11k_pdev *pdev;
if (ab->hw_params.single_pdev_only) {
pdev = rcu_dereference(ab->pdevs_active[0]);
return pdev ? pdev->ar : NULL;
}
if (WARN_ON(pdev_id > ab->num_radios))
return NULL;
for (i = 0; i < ab->num_radios; i++) {
pdev = rcu_dereference(ab->pdevs_active[i]);
if (pdev && pdev->pdev_id == pdev_id)
return (pdev->ar ? pdev->ar : NULL);
}
return NULL;
}
static void ath11k_pdev_caps_update(struct ath11k *ar)
{
struct ath11k_base *ab = ar->ab;
ar->max_tx_power = ab->target_caps.hw_max_tx_power;
/* FIXME Set min_tx_power to ab->target_caps.hw_min_tx_power.
* But since the received value in svcrdy is same as hw_max_tx_power,
* we can set ar->min_tx_power to 0 currently until
* this is fixed in firmware
*/
ar->min_tx_power = 0;
ar->txpower_limit_2g = ar->max_tx_power;
ar->txpower_limit_5g = ar->max_tx_power;
ar->txpower_scale = WMI_HOST_TP_SCALE_MAX;
}
static int ath11k_mac_txpower_recalc(struct ath11k *ar)
{
struct ath11k_pdev *pdev = ar->pdev;
struct ath11k_vif *arvif;
int ret, txpower = -1;
u32 param;
lockdep_assert_held(&ar->conf_mutex);
list_for_each_entry(arvif, &ar->arvifs, list) {
if (arvif->txpower <= 0)
continue;
if (txpower == -1)
txpower = arvif->txpower;
else
txpower = min(txpower, arvif->txpower);
}
if (txpower == -1)
return 0;
/* txpwr is set as 2 units per dBm in FW*/
txpower = min_t(u32, max_t(u32, ar->min_tx_power, txpower),
ar->max_tx_power) * 2;
ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "txpower to set in hw %d\n",
txpower / 2);
if ((pdev->cap.supported_bands & WMI_HOST_WLAN_2G_CAP) &&
ar->txpower_limit_2g != txpower) {
param = WMI_PDEV_PARAM_TXPOWER_LIMIT2G;
ret = ath11k_wmi_pdev_set_param(ar, param,
txpower, ar->pdev->pdev_id);
if (ret)
goto fail;
ar->txpower_limit_2g = txpower;
}
if ((pdev->cap.supported_bands & WMI_HOST_WLAN_5G_CAP) &&
ar->txpower_limit_5g != txpower) {
param = WMI_PDEV_PARAM_TXPOWER_LIMIT5G;
ret = ath11k_wmi_pdev_set_param(ar, param,
txpower, ar->pdev->pdev_id);
if (ret)
goto fail;
ar->txpower_limit_5g = txpower;
}
return 0;
fail:
ath11k_warn(ar->ab, "failed to recalc txpower limit %d using pdev param %d: %d\n",
txpower / 2, param, ret);
return ret;
}
static int ath11k_recalc_rtscts_prot(struct ath11k_vif *arvif)
{
struct ath11k *ar = arvif->ar;
u32 vdev_param, rts_cts = 0;
int ret;
lockdep_assert_held(&ar->conf_mutex);
vdev_param = WMI_VDEV_PARAM_ENABLE_RTSCTS;
/* Enable RTS/CTS protection for sw retries (when legacy stations
* are in BSS) or by default only for second rate series.
* TODO: Check if we need to enable CTS 2 Self in any case
*/
rts_cts = WMI_USE_RTS_CTS;
if (arvif->num_legacy_stations > 0)
rts_cts |= WMI_RTSCTS_ACROSS_SW_RETRIES << 4;
else
rts_cts |= WMI_RTSCTS_FOR_SECOND_RATESERIES << 4;
/* Need not send duplicate param value to firmware */
if (arvif->rtscts_prot_mode == rts_cts)
return 0;
arvif->rtscts_prot_mode = rts_cts;
ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac vdev %d recalc rts/cts prot %d\n",
arvif->vdev_id, rts_cts);
ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
vdev_param, rts_cts);
if (ret)
ath11k_warn(ar->ab, "failed to recalculate rts/cts prot for vdev %d: %d\n",
arvif->vdev_id, ret);
return ret;
}
static int ath11k_mac_set_kickout(struct ath11k_vif *arvif)
{
struct ath11k *ar = arvif->ar;
u32 param;
int ret;
ret = ath11k_wmi_pdev_set_param(ar, WMI_PDEV_PARAM_STA_KICKOUT_TH,
ATH11K_KICKOUT_THRESHOLD,
ar->pdev->pdev_id);
if (ret) {
ath11k_warn(ar->ab, "failed to set kickout threshold on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
param = WMI_VDEV_PARAM_AP_KEEPALIVE_MIN_IDLE_INACTIVE_TIME_SECS;
ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id, param,
ATH11K_KEEPALIVE_MIN_IDLE);
if (ret) {
ath11k_warn(ar->ab, "failed to set keepalive minimum idle time on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
param = WMI_VDEV_PARAM_AP_KEEPALIVE_MAX_IDLE_INACTIVE_TIME_SECS;
ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id, param,
ATH11K_KEEPALIVE_MAX_IDLE);
if (ret) {
ath11k_warn(ar->ab, "failed to set keepalive maximum idle time on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
param = WMI_VDEV_PARAM_AP_KEEPALIVE_MAX_UNRESPONSIVE_TIME_SECS;
ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id, param,
ATH11K_KEEPALIVE_MAX_UNRESPONSIVE);
if (ret) {
ath11k_warn(ar->ab, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
return 0;
}
void ath11k_mac_peer_cleanup_all(struct ath11k *ar)
{
struct ath11k_peer *peer, *tmp;
struct ath11k_base *ab = ar->ab;
lockdep_assert_held(&ar->conf_mutex);
spin_lock_bh(&ab->base_lock);
list_for_each_entry_safe(peer, tmp, &ab->peers, list) {
ath11k_peer_rx_tid_cleanup(ar, peer);
list_del(&peer->list);
kfree(peer);
}
spin_unlock_bh(&ab->base_lock);
ar->num_peers = 0;
ar->num_stations = 0;
}
static int ath11k_monitor_vdev_up(struct ath11k *ar, int vdev_id)
{
int ret = 0;
ret = ath11k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
if (ret) {
ath11k_warn(ar->ab, "failed to put up monitor vdev %i: %d\n",
vdev_id, ret);
return ret;
}
ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac monitor vdev %i started\n",
vdev_id);
return 0;
}
static int ath11k_mac_op_config(struct ieee80211_hw *hw, u32 changed)
{
/* mac80211 requires this op to be present and that's why
* there's an empty function, this can be extended when
* required.
*/
return 0;
}
static int ath11k_mac_setup_bcn_tmpl(struct ath11k_vif *arvif)
{
struct ath11k *ar = arvif->ar;
struct ath11k_base *ab = ar->ab;
struct ieee80211_hw *hw = ar->hw;
struct ieee80211_vif *vif = arvif->vif;
struct ieee80211_mutable_offsets offs = {};
struct sk_buff *bcn;
struct ieee80211_mgmt *mgmt;
u8 *ies;
int ret;
if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
return 0;
bcn = ieee80211_beacon_get_template(hw, vif, &offs);
if (!bcn) {
ath11k_warn(ab, "failed to get beacon template from mac80211\n");
return -EPERM;
}
ies = bcn->data + ieee80211_get_hdrlen_from_skb(bcn);
ies += sizeof(mgmt->u.beacon);
if (cfg80211_find_ie(WLAN_EID_RSN, ies, (skb_tail_pointer(bcn) - ies)))
arvif->rsnie_present = true;
if (cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
WLAN_OUI_TYPE_MICROSOFT_WPA,
ies, (skb_tail_pointer(bcn) - ies)))
arvif->wpaie_present = true;
ret = ath11k_wmi_bcn_tmpl(ar, arvif->vdev_id, &offs, bcn);
kfree_skb(bcn);
if (ret)
ath11k_warn(ab, "failed to submit beacon template command: %d\n",
ret);
return ret;
}
static void ath11k_control_beaconing(struct ath11k_vif *arvif,
struct ieee80211_bss_conf *info)
{
struct ath11k *ar = arvif->ar;
int ret = 0;
lockdep_assert_held(&arvif->ar->conf_mutex);
if (!info->enable_beacon) {
ret = ath11k_wmi_vdev_down(ar, arvif->vdev_id);
if (ret)
ath11k_warn(ar->ab, "failed to down vdev_id %i: %d\n",
arvif->vdev_id, ret);
arvif->is_up = false;
return;
}
/* Install the beacon template to the FW */
ret = ath11k_mac_setup_bcn_tmpl(arvif);
if (ret) {
ath11k_warn(ar->ab, "failed to update bcn tmpl during vdev up: %d\n",
ret);
return;
}
arvif->tx_seq_no = 0x1000;
arvif->aid = 0;
ether_addr_copy(arvif->bssid, info->bssid);
ret = ath11k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
arvif->bssid);
if (ret) {
ath11k_warn(ar->ab, "failed to bring up vdev %d: %i\n",
arvif->vdev_id, ret);
return;
}
arvif->is_up = true;
ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
}
static void ath11k_peer_assoc_h_basic(struct ath11k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct peer_assoc_params *arg)
{
struct ath11k_vif *arvif = (void *)vif->drv_priv;
u32 aid;
lockdep_assert_held(&ar->conf_mutex);
if (vif->type == NL80211_IFTYPE_STATION)
aid = vif->bss_conf.aid;
else
aid = sta->aid;
ether_addr_copy(arg->peer_mac, sta->addr);
arg->vdev_id = arvif->vdev_id;
arg->peer_associd = aid;
arg->auth_flag = true;
/* TODO: STA WAR in ath10k for listen interval required? */
arg->peer_listen_intval = ar->hw->conf.listen_interval;
arg->peer_nss = 1;
arg->peer_caps = vif->bss_conf.assoc_capability;
}
static void ath11k_peer_assoc_h_crypto(struct ath11k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct peer_assoc_params *arg)
{
struct ieee80211_bss_conf *info = &vif->bss_conf;
struct cfg80211_chan_def def;
struct cfg80211_bss *bss;
struct ath11k_vif *arvif = (struct ath11k_vif *)vif->drv_priv;
const u8 *rsnie = NULL;
const u8 *wpaie = NULL;
lockdep_assert_held(&ar->conf_mutex);
if (WARN_ON(ath11k_mac_vif_chan(vif, &def)))
return;
bss = cfg80211_get_bss(ar->hw->wiphy, def.chan, info->bssid, NULL, 0,
IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
if (arvif->rsnie_present || arvif->wpaie_present) {
arg->need_ptk_4_way = true;
if (arvif->wpaie_present)
arg->need_gtk_2_way = true;
} else if (bss) {
const struct cfg80211_bss_ies *ies;
rcu_read_lock();
rsnie = ieee80211_bss_get_ie(bss, WLAN_EID_RSN);
ies = rcu_dereference(bss->ies);
wpaie = cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
WLAN_OUI_TYPE_MICROSOFT_WPA,
ies->data,
ies->len);
rcu_read_unlock();
cfg80211_put_bss(ar->hw->wiphy, bss);
}
/* FIXME: base on RSN IE/WPA IE is a correct idea? */
if (rsnie || wpaie) {
ath11k_dbg(ar->ab, ATH11K_DBG_WMI,
"%s: rsn ie found\n", __func__);
arg->need_ptk_4_way = true;
}
if (wpaie) {
ath11k_dbg(ar->ab, ATH11K_DBG_WMI,
"%s: wpa ie found\n", __func__);
arg->need_gtk_2_way = true;
}
if (sta->mfp) {
/* TODO: Need to check if FW supports PMF? */
arg->is_pmf_enabled = true;
}
/* TODO: safe_mode_enabled (bypass 4-way handshake) flag req? */
}
static void ath11k_peer_assoc_h_rates(struct ath11k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct peer_assoc_params *arg)
{
struct ath11k_vif *arvif = (void *)vif->drv_priv;
struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates;
struct cfg80211_chan_def def;
const struct ieee80211_supported_band *sband;
const struct ieee80211_rate *rates;
enum nl80211_band band;
u32 ratemask;
u8 rate;
int i;
lockdep_assert_held(&ar->conf_mutex);
if (WARN_ON(ath11k_mac_vif_chan(vif, &def)))
return;
band = def.chan->band;
sband = ar->hw->wiphy->bands[band];
ratemask = sta->supp_rates[band];
ratemask &= arvif->bitrate_mask.control[band].legacy;
rates = sband->bitrates;
rateset->num_rates = 0;
for (i = 0; i < 32; i++, ratemask >>= 1, rates++) {
if (!(ratemask & 1))
continue;
rate = ath11k_mac_bitrate_to_rate(rates->bitrate);
rateset->rates[rateset->num_rates] = rate;
rateset->num_rates++;
}
}
static bool
ath11k_peer_assoc_h_ht_masked(const u8 ht_mcs_mask[IEEE80211_HT_MCS_MASK_LEN])
{
int nss;
for (nss = 0; nss < IEEE80211_HT_MCS_MASK_LEN; nss++)
if (ht_mcs_mask[nss])
return false;
return true;
}
static bool
ath11k_peer_assoc_h_vht_masked(const u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
{
int nss;
for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++)
if (vht_mcs_mask[nss])
return false;
return true;
}
static void ath11k_peer_assoc_h_ht(struct ath11k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct peer_assoc_params *arg)
{
const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
struct ath11k_vif *arvif = (void *)vif->drv_priv;
struct cfg80211_chan_def def;
enum nl80211_band band;
const u8 *ht_mcs_mask;
int i, n;
u8 max_nss;
u32 stbc;
lockdep_assert_held(&ar->conf_mutex);
if (WARN_ON(ath11k_mac_vif_chan(vif, &def)))
return;
if (!ht_cap->ht_supported)
return;