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mac.c
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// SPDX-License-Identifier: ISC
/*
* Copyright (c) 2005-2011 Atheros Communications Inc.
* Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
*/
#include "mac.h"
#include <net/cfg80211.h>
#include <net/mac80211.h>
#include <linux/etherdevice.h>
#include <linux/acpi.h>
#include <linux/of.h>
#include <linux/bitfield.h>
#include <linux/module.h>
#include "hif.h"
#include "core.h"
#include "debug.h"
#include "wmi.h"
#include "htt.h"
#include "txrx.h"
#include "testmode.h"
#include "wmi-tlv.h"
#include "wmi-ops.h"
#include "wow.h"
/*********/
/* Rates */
/*********/
static struct ieee80211_rate ath10k_rates[] = {
{ .bitrate = 10,
.hw_value = ATH10K_HW_RATE_CCK_LP_1M },
{ .bitrate = 20,
.hw_value = ATH10K_HW_RATE_CCK_LP_2M,
.hw_value_short = ATH10K_HW_RATE_CCK_SP_2M,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 55,
.hw_value = ATH10K_HW_RATE_CCK_LP_5_5M,
.hw_value_short = ATH10K_HW_RATE_CCK_SP_5_5M,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 110,
.hw_value = ATH10K_HW_RATE_CCK_LP_11M,
.hw_value_short = ATH10K_HW_RATE_CCK_SP_11M,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 60, .hw_value = ATH10K_HW_RATE_OFDM_6M },
{ .bitrate = 90, .hw_value = ATH10K_HW_RATE_OFDM_9M },
{ .bitrate = 120, .hw_value = ATH10K_HW_RATE_OFDM_12M },
{ .bitrate = 180, .hw_value = ATH10K_HW_RATE_OFDM_18M },
{ .bitrate = 240, .hw_value = ATH10K_HW_RATE_OFDM_24M },
{ .bitrate = 360, .hw_value = ATH10K_HW_RATE_OFDM_36M },
{ .bitrate = 480, .hw_value = ATH10K_HW_RATE_OFDM_48M },
{ .bitrate = 540, .hw_value = ATH10K_HW_RATE_OFDM_54M },
};
static struct ieee80211_rate ath10k_rates_rev2[] = {
{ .bitrate = 10,
.hw_value = ATH10K_HW_RATE_REV2_CCK_LP_1M },
{ .bitrate = 20,
.hw_value = ATH10K_HW_RATE_REV2_CCK_LP_2M,
.hw_value_short = ATH10K_HW_RATE_REV2_CCK_SP_2M,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 55,
.hw_value = ATH10K_HW_RATE_REV2_CCK_LP_5_5M,
.hw_value_short = ATH10K_HW_RATE_REV2_CCK_SP_5_5M,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 110,
.hw_value = ATH10K_HW_RATE_REV2_CCK_LP_11M,
.hw_value_short = ATH10K_HW_RATE_REV2_CCK_SP_11M,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 60, .hw_value = ATH10K_HW_RATE_OFDM_6M },
{ .bitrate = 90, .hw_value = ATH10K_HW_RATE_OFDM_9M },
{ .bitrate = 120, .hw_value = ATH10K_HW_RATE_OFDM_12M },
{ .bitrate = 180, .hw_value = ATH10K_HW_RATE_OFDM_18M },
{ .bitrate = 240, .hw_value = ATH10K_HW_RATE_OFDM_24M },
{ .bitrate = 360, .hw_value = ATH10K_HW_RATE_OFDM_36M },
{ .bitrate = 480, .hw_value = ATH10K_HW_RATE_OFDM_48M },
{ .bitrate = 540, .hw_value = ATH10K_HW_RATE_OFDM_54M },
};
#define ATH10K_MAC_FIRST_OFDM_RATE_IDX 4
#define ath10k_a_rates (ath10k_rates + ATH10K_MAC_FIRST_OFDM_RATE_IDX)
#define ath10k_a_rates_size (ARRAY_SIZE(ath10k_rates) - \
ATH10K_MAC_FIRST_OFDM_RATE_IDX)
#define ath10k_g_rates (ath10k_rates + 0)
#define ath10k_g_rates_size (ARRAY_SIZE(ath10k_rates))
#define ath10k_g_rates_rev2 (ath10k_rates_rev2 + 0)
#define ath10k_g_rates_rev2_size (ARRAY_SIZE(ath10k_rates_rev2))
#define ath10k_wmi_legacy_rates ath10k_rates
bool ath10k_mac_bitrate_is_cck(int bitrate)
{
switch (bitrate) {
case 10:
case 20:
case 55:
case 110:
return true;
}
return false;
}
static u8 ath10k_mac_bitrate_to_rate(int bitrate)
{
return DIV_ROUND_UP(bitrate, 5) |
(ath10k_mac_bitrate_is_cck(bitrate) ? BIT(7) : 0);
}
u8 ath10k_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 (ath10k_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;
}
u8 ath10k_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;
}
/* Create a rate-info object that (some) 10.4 CT firmware
* can understand.
*/
u32 ath10k_convert_hw_rate_to_rate_info(u8 tpc, u8 mcs, u8 sgi, u8 nss, u8 pream_type,
u8 num_retries, u8 bw, u8 dyn_bw)
{
/* Re-use logic from 10.4 firmware */
struct __ath10k_rate_info {
u32 power : 6, /* units of the power field is 1/2 dbm */
unused : 1, /* Room for growth */
sgi : 1, /* Enable SGI or not, checked when valid_rate is enabled. */
mcs : 4, /* mcs = 0 ~ 9 */
nss : 2, /* 0 = 1 nss, 1 = 2 nss, 2 = 3 nss, 3 = 4 nss */
pream_type : 2, /* 0 = WIFI_RATECODE_PREAM_OFDM,
1 = WIFI_RATECODE_PREAM_CCK,
2 = WIFI_RATECODE_PREAM_HT ,
3 = WIFI_RATECODE_PREAM_VHT */
num_retries : 4, /* 0 ~ 15: 0 means no-ack */
dyn_bw : 1, /* 0 = static bw, 1 = dynamic bw */
bw : 3, /* valid only if dyn_bw == 0 (static bw).
(0 = 20 mhz, 1 = 40 mhz, 2 = 80 mhz, 3 = 160 mhz , 4 = 80+80mhz) */
valid_power : 1, /* power info field has valid power. */
valid_rate : 1, /* mcs,nss,pream_type fields have valid rates. */
valid_num_retries : 1, /* num_retries field has valid value */
valid_dyn_bw : 1, /* dyn_bw field has valid value */
valid_bw : 1, /* bw field has valid value */
any_valid : 1, /* 1 : htt_tx_msdu_desc_t contains valid tx meta data */
key_id : 2; /* key index 0 to 3 for per packet key rotation */
};
struct __ath10k_rate_info ri;
u32 *rvi = (u32*)(&ri);
rvi[0] = 0;
if (tpc != 0xFF) {
ri.power = tpc;
ri.valid_power = 1;
ri.any_valid = 1;
}
if (mcs != 0xFF) {
ri.mcs = mcs;
ri.nss = nss;
ri.pream_type = pream_type;
ri.sgi = sgi;
ri.valid_rate = 1;
ri.any_valid = 1;
}
if (num_retries != 0xFF) {
ri.num_retries = num_retries;
ri.valid_num_retries = 1;
ri.any_valid = 1;
}
if (dyn_bw != 0xFF) {
ri.dyn_bw = dyn_bw;
ri.valid_dyn_bw = 1;
if (ri.dyn_bw == 0) {
ri.bw = bw;
ri.valid_bw = 1;
}
ri.any_valid = 1;
}
/* leave key-id set to zero for now */
return rvi[0];
}
static int ath10k_mac_get_rate_hw_value(int bitrate)
{
int i;
u8 hw_value_prefix = 0;
if (ath10k_mac_bitrate_is_cck(bitrate))
hw_value_prefix = WMI_RATE_PREAMBLE_CCK << 6;
for (i = 0; i < ARRAY_SIZE(ath10k_rates); i++) {
if (ath10k_rates[i].bitrate == bitrate)
return hw_value_prefix | ath10k_rates[i].hw_value;
}
return -EINVAL;
}
static int ath10k_mac_get_max_vht_mcs_map(u16 mcs_map, int nss)
{
switch ((mcs_map >> (2 * nss)) & 0x3) {
case IEEE80211_VHT_MCS_SUPPORT_0_7: return BIT(8) - 1;
case IEEE80211_VHT_MCS_SUPPORT_0_8: return BIT(9) - 1;
case IEEE80211_VHT_MCS_SUPPORT_0_9: return BIT(10) - 1;
}
return 0;
}
static u32
ath10k_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
ath10k_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;
}
int ath10k_mac_ext_resource_config(struct ath10k *ar, u32 val)
{
enum wmi_host_platform_type platform_type;
int ret;
if (test_bit(WMI_SERVICE_TX_MODE_DYNAMIC, ar->wmi.svc_map))
platform_type = WMI_HOST_PLATFORM_LOW_PERF;
else
platform_type = WMI_HOST_PLATFORM_HIGH_PERF;
ret = ath10k_wmi_ext_resource_config(ar, platform_type, val);
if (ret && ret != -EOPNOTSUPP) {
ath10k_warn(ar, "failed to configure ext resource: %d\n", ret);
return ret;
}
return 0;
}
/* 0: Full hardware crypt
* 1: Tx hardware crypt, but expect rx software crypt (use native wifi tx type)
*/
int ath10k_modparam_nohwcrypt;
module_param_named(nohwcrypt, ath10k_modparam_nohwcrypt, int, 0444);
MODULE_PARM_DESC(nohwcrypt, "Disable hardware rx decrypt feature");
int ath10k_modparam_ct_sta;
module_param_named(ct_sta, ath10k_modparam_ct_sta, int, 0444);
MODULE_PARM_DESC(ct_sta, "Use CT-STA mode, a bit like proxy-STA");
int ath10k_modparam_nobeamform_mu;
module_param_named(nobeamform_mu, ath10k_modparam_nobeamform_mu, int, 0444);
MODULE_PARM_DESC(nobeamform_mu, "Disable TX/RX MU Beamforming capabilities");
int ath10k_modparam_nobeamform_su;
module_param_named(nobeamform_su, ath10k_modparam_nobeamform_su, int, 0444);
MODULE_PARM_DESC(nobeamform_su, "Disable TX/RX SU Beamforming capabilities");
int ath10k_modparam_target_num_vdevs_ct = DEF_TARGET_10X_NUM_VDEVS_CT;
module_param_named(num_vdevs_ct, ath10k_modparam_target_num_vdevs_ct, int, 0444);
MODULE_PARM_DESC(num_vdevs_ct, "Maximum vdevs to request from firmware");
/* More than 127 seems to cause issues when using HW de-crypt, so default to 127. */
int ath10k_modparam_target_num_peers_ct = 127;
module_param_named(num_peers_ct, ath10k_modparam_target_num_peers_ct, int, 0444);
MODULE_PARM_DESC(num_peers_ct, "Maximum peers to request from firmware");
/* These consume a fair bit of RAM on target. */
int ath10k_modparam_target_num_msdu_desc_ct = TARGET_10X_NUM_MSDU_DESC;
module_param_named(num_msdu_desc_ct, ath10k_modparam_target_num_msdu_desc_ct, int, 0444);
MODULE_PARM_DESC(num_msdu_desc_ct, "Maximum MSDU Descriptors in firmware (must be multiple of 8)");
/* The firmware tries to cache rate-ctrl objects in the host (driver) memory. But,
* with lots of active stations, this appears to cause constant cache swapping and
* in the end, rate-ctrl fails to work well at all.
* CT Firmware has lots of RAM savings, especially when using fewer than 64 vdevs,
* so allow users to configure more than the default (currently 32) of in-ram
* rate-ctrl objects. As long as firmware RAM is available, allocating as many
* rate-ctrl objects as possible (up to number of peers) is probably a good idea.
* This setting should be harmless in all CT firmware, but it will only have an
* effect in beta-16 firmware and later. Setting value to 0 means use firmware
* defaults.
*/
int ath10k_modparam_target_num_rate_ctrl_objs_ct = 0;
module_param_named(num_rate_ctrl_objs_ct, ath10k_modparam_target_num_rate_ctrl_objs_ct, int, 0444);
MODULE_PARM_DESC(num_rate_ctrl_objs_ct, "Number of rate-ctrl objects to cache in firmware RAM");
/**********/
/* Crypto */
/**********/
static int ath10k_send_key(struct ath10k_vif *arvif,
struct ieee80211_key_conf *key,
enum set_key_cmd cmd,
const u8 *macaddr, u32 flags)
{
struct ath10k *ar = arvif->ar;
struct wmi_vdev_install_key_arg arg = {
.vdev_id = arvif->vdev_id,
.key_idx = key->keyidx,
.key_len = key->keylen,
.key_data = key->key,
.key_flags = flags,
.macaddr = macaddr,
};
int ret1, ret2;
lockdep_assert_held(&arvif->ar->conf_mutex);
switch (key->cipher) {
case WLAN_CIPHER_SUITE_CCMP:
arg.key_cipher = ar->wmi_key_cipher[WMI_CIPHER_AES_CCM];
key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV_MGMT;
break;
case WLAN_CIPHER_SUITE_TKIP:
arg.key_cipher = ar->wmi_key_cipher[WMI_CIPHER_TKIP];
arg.key_txmic_len = 8;
arg.key_rxmic_len = 8;
break;
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
arg.key_cipher = ar->wmi_key_cipher[WMI_CIPHER_WEP];
break;
case WLAN_CIPHER_SUITE_CCMP_256:
arg.key_cipher = ar->wmi_key_cipher[WMI_CIPHER_AES_CCM];
break;
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
arg.key_cipher = ar->wmi_key_cipher[WMI_CIPHER_AES_GCM];
key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV_MGMT;
break;
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
case WLAN_CIPHER_SUITE_BIP_CMAC_256:
case WLAN_CIPHER_SUITE_AES_CMAC:
WARN_ON(1);
return -EINVAL;
default:
ath10k_warn(ar, "cipher %d is not supported\n", key->cipher);
return -EOPNOTSUPP;
}
if (test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
if (cmd == DISABLE_KEY) {
arg.key_cipher = ar->wmi_key_cipher[WMI_CIPHER_NONE];
arg.key_data = NULL;
}
ret1 = ath10k_wmi_vdev_install_key(arvif->ar, &arg);
ret2 = ath10k_wmi_barrier(ar);
if (ret2) {
ath10k_err(ar, "failed to ping firmware: %d\n", ret2);
return ret2;
}
return ret1;
}
static int ath10k_install_key(struct ath10k_vif *arvif,
struct ieee80211_key_conf *key,
enum set_key_cmd cmd,
const u8 *macaddr, u32 flags)
{
struct ath10k *ar = arvif->ar;
int ret;
unsigned long time_left;
lockdep_assert_held(&ar->conf_mutex);
reinit_completion(&ar->install_key_done);
if (arvif->nohwcrypt)
return 1;
ret = ath10k_send_key(arvif, key, cmd, macaddr, flags);
if (ret)
return ret;
time_left = wait_for_completion_timeout(&ar->install_key_done, 3 * HZ);
if (time_left == 0)
return -ETIMEDOUT;
ret = ar->install_key_rv;
return ret;
}
static int ath10k_install_peer_wep_keys(struct ath10k_vif *arvif,
const u8 *addr)
{
struct ath10k *ar = arvif->ar;
struct ath10k_peer *peer;
int ret;
int i;
u32 flags;
lockdep_assert_held(&ar->conf_mutex);
if (WARN_ON(arvif->vif->type != NL80211_IFTYPE_AP &&
arvif->vif->type != NL80211_IFTYPE_ADHOC &&
arvif->vif->type != NL80211_IFTYPE_MESH_POINT))
return -EINVAL;
spin_lock_bh(&ar->data_lock);
peer = ath10k_peer_find(ar, arvif->vdev_id, addr);
spin_unlock_bh(&ar->data_lock);
if (!peer)
return -ENOENT;
for (i = 0; i < ARRAY_SIZE(arvif->wep_keys); i++) {
if (arvif->wep_keys[i] == NULL)
continue;
switch (arvif->vif->type) {
case NL80211_IFTYPE_AP:
flags = WMI_KEY_PAIRWISE;
if (arvif->def_wep_key_idx == i)
flags |= WMI_KEY_TX_USAGE;
ret = ath10k_install_key(arvif, arvif->wep_keys[i],
SET_KEY, addr, flags);
if (ret < 0)
return ret;
break;
case NL80211_IFTYPE_ADHOC:
ret = ath10k_install_key(arvif, arvif->wep_keys[i],
SET_KEY, addr,
WMI_KEY_PAIRWISE);
if (ret < 0)
return ret;
ret = ath10k_install_key(arvif, arvif->wep_keys[i],
SET_KEY, addr, WMI_KEY_GROUP);
if (ret < 0)
return ret;
break;
default:
WARN_ON(1);
return -EINVAL;
}
spin_lock_bh(&ar->data_lock);
peer->keys[i] = arvif->wep_keys[i];
spin_unlock_bh(&ar->data_lock);
}
/* In some cases (notably with static WEP IBSS with multiple keys)
* multicast Tx becomes broken. Both pairwise and groupwise keys are
* installed already. Using WMI_KEY_TX_USAGE in different combinations
* didn't seem help. Using def_keyid vdev parameter seems to be
* effective so use that.
*
* FIXME: Revisit. Perhaps this can be done in a less hacky way.
*/
if (arvif->vif->type != NL80211_IFTYPE_ADHOC)
return 0;
if (arvif->def_wep_key_idx == -1)
return 0;
ret = ath10k_wmi_vdev_set_param(arvif->ar,
arvif->vdev_id,
arvif->ar->wmi.vdev_param->def_keyid,
arvif->def_wep_key_idx);
if (ret) {
ath10k_warn(ar, "failed to re-set def wpa key idxon vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
return 0;
}
static int ath10k_clear_peer_keys(struct ath10k_vif *arvif,
const u8 *addr)
{
struct ath10k *ar = arvif->ar;
struct ath10k_peer *peer;
int first_errno = 0;
int ret;
int i;
u32 flags = 0;
lockdep_assert_held(&ar->conf_mutex);
spin_lock_bh(&ar->data_lock);
peer = ath10k_peer_find(ar, arvif->vdev_id, addr);
spin_unlock_bh(&ar->data_lock);
if (!peer)
return -ENOENT;
for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
if (peer->keys[i] == NULL)
continue;
/* key flags are not required to delete the key */
ret = ath10k_install_key(arvif, peer->keys[i],
DISABLE_KEY, addr, flags);
if (ret < 0 && first_errno == 0)
first_errno = ret;
if (ret < 0)
ath10k_warn(ar, "failed to remove peer wep key %d: %d\n",
i, ret);
spin_lock_bh(&ar->data_lock);
peer->keys[i] = NULL;
spin_unlock_bh(&ar->data_lock);
}
return first_errno;
}
bool ath10k_mac_is_peer_wep_key_set(struct ath10k *ar, const u8 *addr,
u8 keyidx)
{
struct ath10k_peer *peer;
int i;
lockdep_assert_held(&ar->data_lock);
/* We don't know which vdev this peer belongs to,
* since WMI doesn't give us that information.
*
* FIXME: multi-bss needs to be handled.
*/
peer = ath10k_peer_find(ar, 0, addr);
if (!peer)
return false;
for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
if (peer->keys[i] && peer->keys[i]->keyidx == keyidx)
return true;
}
return false;
}
static int ath10k_clear_vdev_key(struct ath10k_vif *arvif,
struct ieee80211_key_conf *key)
{
struct ath10k *ar = arvif->ar;
struct ath10k_peer *peer;
u8 addr[ETH_ALEN];
int first_errno = 0;
int ret;
int i;
u32 flags = 0;
lockdep_assert_held(&ar->conf_mutex);
for (;;) {
/* since ath10k_install_key we can't hold data_lock all the
* time, so we try to remove the keys incrementally
*/
spin_lock_bh(&ar->data_lock);
i = 0;
list_for_each_entry(peer, &ar->peers, list) {
for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
if (peer->keys[i] == key) {
ether_addr_copy(addr, peer->addr);
peer->keys[i] = NULL;
break;
}
}
if (i < ARRAY_SIZE(peer->keys))
break;
}
spin_unlock_bh(&ar->data_lock);
if (i == ARRAY_SIZE(peer->keys))
break;
/* key flags are not required to delete the key */
ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr, flags);
if (ret < 0 && first_errno == 0)
first_errno = ret;
if (ret)
ath10k_warn(ar, "failed to remove key for %pM: %d\n",
addr, ret);
}
return first_errno;
}
static int ath10k_mac_vif_update_wep_key(struct ath10k_vif *arvif,
struct ieee80211_key_conf *key)
{
struct ath10k *ar = arvif->ar;
struct ath10k_peer *peer;
int ret;
lockdep_assert_held(&ar->conf_mutex);
list_for_each_entry(peer, &ar->peers, list) {
if (ether_addr_equal(peer->addr, arvif->vif->addr))
continue;
if (ether_addr_equal(peer->addr, arvif->bssid))
continue;
if (peer->keys[key->keyidx] == key)
continue;
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vif vdev %i update key %i needs update\n",
arvif->vdev_id, key->keyidx);
ret = ath10k_install_peer_wep_keys(arvif, peer->addr);
if (ret) {
ath10k_warn(ar, "failed to update wep keys on vdev %i for peer %pM: %d\n",
arvif->vdev_id, peer->addr, ret);
return ret;
}
}
return 0;
}
/*********************/
/* General utilities */
/*********************/
static inline enum wmi_phy_mode
chan_to_phymode(const struct cfg80211_chan_def *chandef)
{
enum wmi_phy_mode phymode = MODE_UNKNOWN;
switch (chandef->chan->band) {
case NL80211_BAND_2GHZ:
switch (chandef->width) {
case NL80211_CHAN_WIDTH_20_NOHT:
if (chandef->chan->flags & IEEE80211_CHAN_NO_OFDM)
phymode = MODE_11B;
else
phymode = MODE_11G;
break;
case NL80211_CHAN_WIDTH_20:
phymode = MODE_11NG_HT20;
break;
case NL80211_CHAN_WIDTH_40:
phymode = MODE_11NG_HT40;
break;
default:
phymode = MODE_UNKNOWN;
break;
}
break;
case NL80211_BAND_5GHZ:
switch (chandef->width) {
case NL80211_CHAN_WIDTH_20_NOHT:
phymode = MODE_11A;
break;
case NL80211_CHAN_WIDTH_20:
phymode = MODE_11NA_HT20;
break;
case NL80211_CHAN_WIDTH_40:
phymode = MODE_11NA_HT40;
break;
case NL80211_CHAN_WIDTH_80:
phymode = MODE_11AC_VHT80;
break;
case NL80211_CHAN_WIDTH_160:
phymode = MODE_11AC_VHT160;
break;
case NL80211_CHAN_WIDTH_80P80:
phymode = MODE_11AC_VHT80_80;
break;
default:
phymode = MODE_UNKNOWN;
break;
}
break;
default:
break;
}
WARN_ON(phymode == MODE_UNKNOWN);
return phymode;
}
static u8 ath10k_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;
}
}
int ath10k_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 void ath10k_mac_num_chanctxs_iter(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *conf,
void *data)
{
int *num = data;
(*num)++;
}
static int ath10k_mac_num_chanctxs(struct ath10k *ar)
{
int num = 0;
ieee80211_iter_chan_contexts_atomic(ar->hw,
ath10k_mac_num_chanctxs_iter,
&num);
return num;
}
static void
ath10k_mac_get_any_chandef_iter(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *conf,
void *data)
{
struct cfg80211_chan_def **def = data;
*def = &conf->def;
}
static void ath10k_wait_for_peer_delete_done(struct ath10k *ar, u32 vdev_id,
const u8 *addr)
{
unsigned long time_left;
int ret;
if (test_bit(WMI_SERVICE_SYNC_DELETE_CMDS, ar->wmi.svc_map)) {
ret = ath10k_wait_for_peer_deleted(ar, vdev_id, addr);
if (ret) {
ath10k_warn(ar, "failed wait for peer deleted");
return;
}
time_left = wait_for_completion_timeout(&ar->peer_delete_done,
5 * HZ);
if (!time_left)
ath10k_warn(ar, "Timeout in receiving peer delete response\n");
}
}
static int ath10k_peer_create(struct ath10k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
u32 vdev_id,
const u8 *addr,
enum wmi_peer_type peer_type)
{
struct ath10k_vif *arvif;
struct ath10k_peer *peer;
int num_peers = 0;
int ret;
lockdep_assert_held(&ar->conf_mutex);
num_peers = ar->num_peers;
/* Each vdev consumes a peer entry as well */
list_for_each_entry(arvif, &ar->arvifs, list)
num_peers++;
if (num_peers >= ar->max_num_peers) {
ath10k_warn(ar, "failed to create peer %pM for vdev %d, too-many-peers (ar->num_peers: %d num_peers: %d max_peers: %d)\n",
sta->addr, vdev_id, ar->num_peers, num_peers, ar->max_num_peers);
return -ENOBUFS;
}
ret = ath10k_wmi_peer_create(ar, vdev_id, addr, peer_type);
if (ret) {
ath10k_warn(ar, "failed to create wmi peer %pM on vdev %i: %i\n",
addr, vdev_id, ret);
return ret;
}
ret = ath10k_wait_for_peer_created(ar, vdev_id, addr);
if (ret) {
ath10k_warn(ar, "failed to wait for created wmi peer %pM on vdev %i: %i\n",
addr, vdev_id, ret);
return ret;
}
spin_lock_bh(&ar->data_lock);
peer = ath10k_peer_find(ar, vdev_id, addr);
if (!peer) {
spin_unlock_bh(&ar->data_lock);
ath10k_warn(ar, "failed to find peer %pM on vdev %i after creation\n",
addr, vdev_id);
ath10k_wait_for_peer_delete_done(ar, vdev_id, addr);
return -ENOENT;
}
peer->vif = vif;
peer->sta = sta;
spin_unlock_bh(&ar->data_lock);
ar->num_peers++;
return 0;
}
int ath10k_mac_set_pdev_kickout(struct ath10k *ar)
{
u32 param = ar->wmi.pdev_param->sta_kickout_th;
int rv;
rv = ath10k_wmi_pdev_set_param(ar, param,
ar->sta_xretry_kickout_thresh);
if (rv) {
ath10k_warn(ar, "failed to set sta kickout threshold to %d: %d\n",
ar->sta_xretry_kickout_thresh, rv);
}
return rv;
}
static int ath10k_mac_set_kickout(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
u32 param;
int ret;
param = ar->wmi.vdev_param->ap_keepalive_min_idle_inactive_time_secs;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
ATH10K_KEEPALIVE_MIN_IDLE);
if (ret) {
ath10k_warn(ar, "failed to set keepalive minimum idle time on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
param = ar->wmi.vdev_param->ap_keepalive_max_idle_inactive_time_secs;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
ATH10K_KEEPALIVE_MAX_IDLE);
if (ret) {
ath10k_warn(ar, "failed to set keepalive maximum idle time on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
param = ar->wmi.vdev_param->ap_keepalive_max_unresponsive_time_secs;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
ATH10K_KEEPALIVE_MAX_UNRESPONSIVE);
if (ret) {
ath10k_warn(ar, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
return 0;
}
/* This method overrides other rts/cts settings, so it should be called last */
static int ath10k_recalc_rtscts_prot(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
u32 vdev_param, rts_cts = 0;
lockdep_assert_held(&ar->conf_mutex);
vdev_param = ar->wmi.vdev_param->enable_rtscts;
/* Should we do rts/cts protection */
if (arvif->use_cts_prot) {
if (arvif->rts_enabled)
rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);
else
rts_cts |= SM(WMI_CTSTOSELF_ENABLED, WMI_RTSCTS_SET);
/* And since rts/cts is enabled, how should it be used? */
/* The firmware already restricts rts/cts in situation where peer is HT,
* as far as I can tell, so no need to check that here.
*/
/* if (arvif->num_legacy_stations > 0) { */
/* I don't think we have enough information to know if we want to force for all
* rate series or not, so just set for retries for now. In future, an additional
* flag could be set via debugfs or similar to force for all rate series if
* desired.
*/
rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES, WMI_RTSCTS_PROFILE);
/* rts_cts |= SM(WMI_RTSCTS_FOR_ALL_RATESERIES, WMI_RTSCTS_PROFILE); */
/* } */
}
else {
rts_cts |= SM(WMI_RTSCTS_FOR_NO_RATESERIES, WMI_RTSCTS_PROFILE);
}
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d recalc rts/cts use-cts-prot: %d rts-enabled: %d prot %d\n",
arvif->vdev_id, arvif->use_cts_prot, arvif->rts_enabled, rts_cts);
return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
rts_cts);
}
static int ath10k_mac_set_rts(struct ath10k_vif *arvif, u32 value)
{
struct ath10k *ar = arvif->ar;
u32 vdev_param;
int ret;