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linux/drivers/net/wireless/rtlwifi/core.c

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/******************************************************************************
*
* Copyright(c) 2009-2012 Realtek Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* The full GNU General Public License is included in this distribution in the
* file called LICENSE.
*
* Contact Information:
* wlanfae <wlanfae@realtek.com>
* Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
* Hsinchu 300, Taiwan.
*
* Larry Finger <Larry.Finger@lwfinger.net>
*
*****************************************************************************/
#include "wifi.h"
#include "core.h"
#include "cam.h"
#include "base.h"
#include "pci.h"
#include "ps.h"
#include <linux/export.h>
void rtl_fw_cb(const struct firmware *firmware, void *context)
{
struct ieee80211_hw *hw = context;
struct rtl_priv *rtlpriv = rtl_priv(hw);
int err;
RT_TRACE(rtlpriv, COMP_ERR, DBG_LOUD,
"Firmware callback routine entered!\n");
complete(&rtlpriv->firmware_loading_complete);
if (!firmware) {
pr_err("Firmware %s not available\n", rtlpriv->cfg->fw_name);
rtlpriv->max_fw_size = 0;
return;
}
if (firmware->size > rtlpriv->max_fw_size) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"Firmware is too big!\n");
release_firmware(firmware);
return;
}
memcpy(rtlpriv->rtlhal.pfirmware, firmware->data, firmware->size);
rtlpriv->rtlhal.fwsize = firmware->size;
release_firmware(firmware);
err = ieee80211_register_hw(hw);
if (err) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"Can't register mac80211 hw\n");
return;
} else {
rtlpriv->mac80211.mac80211_registered = 1;
}
set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
/*init rfkill */
rtl_init_rfkill(hw);
}
EXPORT_SYMBOL(rtl_fw_cb);
/*mutex for start & stop is must here. */
static int rtl_op_start(struct ieee80211_hw *hw)
{
int err;
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
if (!is_hal_stop(rtlhal))
return 0;
if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
return 0;
mutex_lock(&rtlpriv->locks.conf_mutex);
err = rtlpriv->intf_ops->adapter_start(hw);
if (!err)
rtl_watch_dog_timer_callback((unsigned long)hw);
mutex_unlock(&rtlpriv->locks.conf_mutex);
return err;
}
static void rtl_op_stop(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
if (is_hal_stop(rtlhal))
return;
if (unlikely(ppsc->rfpwr_state == ERFOFF)) {
rtl_ips_nic_on(hw);
mdelay(1);
}
mutex_lock(&rtlpriv->locks.conf_mutex);
mac->link_state = MAC80211_NOLINK;
memset(mac->bssid, 0, 6);
mac->vendor = PEER_UNKNOWN;
/*reset sec info */
rtl_cam_reset_sec_info(hw);
rtl_deinit_deferred_work(hw);
rtlpriv->intf_ops->adapter_stop(hw);
mutex_unlock(&rtlpriv->locks.conf_mutex);
}
static void rtl_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
struct rtl_tcb_desc tcb_desc;
memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
goto err_free;
if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
goto err_free;
if (!rtlpriv->intf_ops->waitq_insert(hw, skb))
rtlpriv->intf_ops->adapter_tx(hw, skb, &tcb_desc);
return;
err_free:
dev_kfree_skb_any(skb);
}
static int rtl_op_add_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
int err = 0;
vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER;
if (mac->vif) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
"vif has been set!! mac->vif = 0x%p\n", mac->vif);
return -EOPNOTSUPP;
}
rtl_ips_nic_on(hw);
mutex_lock(&rtlpriv->locks.conf_mutex);
switch (vif->type) {
case NL80211_IFTYPE_STATION:
if (mac->beacon_enabled == 1) {
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"NL80211_IFTYPE_STATION\n");
mac->beacon_enabled = 0;
rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
rtlpriv->cfg->maps
[RTL_IBSS_INT_MASKS]);
}
break;
case NL80211_IFTYPE_ADHOC:
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"NL80211_IFTYPE_ADHOC\n");
mac->link_state = MAC80211_LINKED;
rtlpriv->cfg->ops->set_bcn_reg(hw);
if (rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G)
mac->basic_rates = 0xfff;
else
mac->basic_rates = 0xff0;
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
(u8 *) (&mac->basic_rates));
break;
case NL80211_IFTYPE_AP:
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"NL80211_IFTYPE_AP\n");
mac->link_state = MAC80211_LINKED;
rtlpriv->cfg->ops->set_bcn_reg(hw);
if (rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G)
mac->basic_rates = 0xfff;
else
mac->basic_rates = 0xff0;
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
(u8 *) (&mac->basic_rates));
break;
default:
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"operation mode %d is not supported!\n", vif->type);
err = -EOPNOTSUPP;
goto out;
}
mac->vif = vif;
mac->opmode = vif->type;
rtlpriv->cfg->ops->set_network_type(hw, vif->type);
memcpy(mac->mac_addr, vif->addr, ETH_ALEN);
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_ETHER_ADDR, mac->mac_addr);
out:
mutex_unlock(&rtlpriv->locks.conf_mutex);
return err;
}
static void rtl_op_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
mutex_lock(&rtlpriv->locks.conf_mutex);
/* Free beacon resources */
if ((mac->opmode == NL80211_IFTYPE_AP) ||
(mac->opmode == NL80211_IFTYPE_ADHOC) ||
(mac->opmode == NL80211_IFTYPE_MESH_POINT)) {
if (mac->beacon_enabled == 1) {
mac->beacon_enabled = 0;
rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
rtlpriv->cfg->maps
[RTL_IBSS_INT_MASKS]);
}
}
/*
*Note: We assume NL80211_IFTYPE_UNSPECIFIED as
*NO LINK for our hardware.
*/
mac->vif = NULL;
mac->link_state = MAC80211_NOLINK;
memset(mac->bssid, 0, 6);
mac->vendor = PEER_UNKNOWN;
mac->opmode = NL80211_IFTYPE_UNSPECIFIED;
rtlpriv->cfg->ops->set_network_type(hw, mac->opmode);
mutex_unlock(&rtlpriv->locks.conf_mutex);
}
static int rtl_op_config(struct ieee80211_hw *hw, u32 changed)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_phy *rtlphy = &(rtlpriv->phy);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
struct ieee80211_conf *conf = &hw->conf;
mutex_lock(&rtlpriv->locks.conf_mutex);
if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) { /*BIT(2)*/
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"IEEE80211_CONF_CHANGE_LISTEN_INTERVAL\n");
}
/*For IPS */
if (changed & IEEE80211_CONF_CHANGE_IDLE) {
if (hw->conf.flags & IEEE80211_CONF_IDLE)
rtl_ips_nic_off(hw);
else
rtl_ips_nic_on(hw);
} else {
/*
*although rfoff may not cause by ips, but we will
*check the reason in set_rf_power_state function
*/
if (unlikely(ppsc->rfpwr_state == ERFOFF))
rtl_ips_nic_on(hw);
}
/*For LPS */
if (changed & IEEE80211_CONF_CHANGE_PS) {
cancel_delayed_work(&rtlpriv->works.ps_work);
cancel_delayed_work(&rtlpriv->works.ps_rfon_wq);
if (conf->flags & IEEE80211_CONF_PS) {
rtlpriv->psc.sw_ps_enabled = true;
/* sleep here is must, or we may recv the beacon and
* cause mac80211 into wrong ps state, this will cause
* power save nullfunc send fail, and further cause
* pkt loss, So sleep must quickly but not immediatly
* because that will cause nullfunc send by mac80211
* fail, and cause pkt loss, we have tested that 5mA
* is worked very well */
if (!rtlpriv->psc.multi_buffered)
queue_delayed_work(rtlpriv->works.rtl_wq,
&rtlpriv->works.ps_work,
MSECS(5));
} else {
rtl_swlps_rf_awake(hw);
rtlpriv->psc.sw_ps_enabled = false;
}
}
if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"IEEE80211_CONF_CHANGE_RETRY_LIMITS %x\n",
hw->conf.long_frame_max_tx_count);
mac->retry_long = hw->conf.long_frame_max_tx_count;
mac->retry_short = hw->conf.long_frame_max_tx_count;
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RETRY_LIMIT,
(u8 *) (&hw->conf.
long_frame_max_tx_count));
}
if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
struct ieee80211_channel *channel = hw->conf.channel;
u8 wide_chan = (u8) channel->hw_value;
/*
*because we should back channel to
*current_network.chan in in scanning,
*So if set_chan == current_network.chan
*we should set it.
*because mac80211 tell us wrong bw40
*info for cisco1253 bw20, so we modify
*it here based on UPPER & LOWER
*/
switch (hw->conf.channel_type) {
case NL80211_CHAN_HT20:
case NL80211_CHAN_NO_HT:
/* SC */
mac->cur_40_prime_sc =
PRIME_CHNL_OFFSET_DONT_CARE;
rtlphy->current_chan_bw = HT_CHANNEL_WIDTH_20;
mac->bw_40 = false;
break;
case NL80211_CHAN_HT40MINUS:
/* SC */
mac->cur_40_prime_sc = PRIME_CHNL_OFFSET_UPPER;
rtlphy->current_chan_bw =
HT_CHANNEL_WIDTH_20_40;
mac->bw_40 = true;
/*wide channel */
wide_chan -= 2;
break;
case NL80211_CHAN_HT40PLUS:
/* SC */
mac->cur_40_prime_sc = PRIME_CHNL_OFFSET_LOWER;
rtlphy->current_chan_bw =
HT_CHANNEL_WIDTH_20_40;
mac->bw_40 = true;
/*wide channel */
wide_chan += 2;
break;
default:
mac->bw_40 = false;
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"switch case not processed\n");
break;
}
if (wide_chan <= 0)
wide_chan = 1;
/* In scanning, before we go offchannel we may send a ps=1 null
* to AP, and then we may send a ps = 0 null to AP quickly, but
* first null may have caused AP to put lots of packet to hw tx
* buffer. These packets must be tx'd before we go off channel
* so we must delay more time to let AP flush these packets
* before going offchannel, or dis-association or delete BA will
* happen by AP
*/
if (rtlpriv->mac80211.offchan_delay) {
rtlpriv->mac80211.offchan_delay = false;
mdelay(50);
}
rtlphy->current_channel = wide_chan;
rtlpriv->cfg->ops->switch_channel(hw);
rtlpriv->cfg->ops->set_channel_access(hw);
rtlpriv->cfg->ops->set_bw_mode(hw,
hw->conf.channel_type);
}
mutex_unlock(&rtlpriv->locks.conf_mutex);
return 0;
}
static void rtl_op_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *new_flags, u64 multicast)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
*new_flags &= RTL_SUPPORTED_FILTERS;
if (!changed_flags)
return;
/*TODO: we disable broadcase now, so enable here */
if (changed_flags & FIF_ALLMULTI) {
if (*new_flags & FIF_ALLMULTI) {
mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AM] |
rtlpriv->cfg->maps[MAC_RCR_AB];
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"Enable receive multicast frame\n");
} else {
mac->rx_conf &= ~(rtlpriv->cfg->maps[MAC_RCR_AM] |
rtlpriv->cfg->maps[MAC_RCR_AB]);
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"Disable receive multicast frame\n");
}
}
if (changed_flags & FIF_FCSFAIL) {
if (*new_flags & FIF_FCSFAIL) {
mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACRC32];
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"Enable receive FCS error frame\n");
} else {
mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACRC32];
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"Disable receive FCS error frame\n");
}
}
/* if ssid not set to hw don't check bssid
* here just used for linked scanning, & linked
* and nolink check bssid is set in set network_type */
if ((changed_flags & FIF_BCN_PRBRESP_PROMISC) &&
(mac->link_state >= MAC80211_LINKED)) {
if (mac->opmode != NL80211_IFTYPE_AP) {
if (*new_flags & FIF_BCN_PRBRESP_PROMISC) {
rtlpriv->cfg->ops->set_chk_bssid(hw, false);
} else {
rtlpriv->cfg->ops->set_chk_bssid(hw, true);
}
}
}
if (changed_flags & FIF_CONTROL) {
if (*new_flags & FIF_CONTROL) {
mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACF];
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"Enable receive control frame\n");
} else {
mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACF];
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"Disable receive control frame\n");
}
}
if (changed_flags & FIF_OTHER_BSS) {
if (*new_flags & FIF_OTHER_BSS) {
mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AAP];
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"Enable receive other BSS's frame\n");
} else {
mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_AAP];
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"Disable receive other BSS's frame\n");
}
}
}
static int rtl_op_sta_add(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
struct rtl_sta_info *sta_entry;
if (sta) {
sta_entry = (struct rtl_sta_info *) sta->drv_priv;
if (rtlhal->current_bandtype == BAND_ON_2_4G) {
sta_entry->wireless_mode = WIRELESS_MODE_G;
if (sta->supp_rates[0] <= 0xf)
sta_entry->wireless_mode = WIRELESS_MODE_B;
if (sta->ht_cap.ht_supported)
sta_entry->wireless_mode = WIRELESS_MODE_N_24G;
} else if (rtlhal->current_bandtype == BAND_ON_5G) {
sta_entry->wireless_mode = WIRELESS_MODE_A;
if (sta->ht_cap.ht_supported)
sta_entry->wireless_mode = WIRELESS_MODE_N_24G;
}
/* I found some times mac80211 give wrong supp_rates for adhoc*/
if (rtlpriv->mac80211.opmode == NL80211_IFTYPE_ADHOC)
sta_entry->wireless_mode = WIRELESS_MODE_G;
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
"Add sta addr is %pM\n", sta->addr);
rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
}
return 0;
}
static int rtl_op_sta_remove(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_sta_info *sta_entry;
if (sta) {
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
"Remove sta addr is %pM\n", sta->addr);
sta_entry = (struct rtl_sta_info *) sta->drv_priv;
sta_entry->wireless_mode = 0;
sta_entry->ratr_index = 0;
}
return 0;
}
static int _rtl_get_hal_qnum(u16 queue)
{
int qnum;
switch (queue) {
case 0:
qnum = AC3_VO;
break;
case 1:
qnum = AC2_VI;
break;
case 2:
qnum = AC0_BE;
break;
case 3:
qnum = AC1_BK;
break;
default:
qnum = AC0_BE;
break;
}
return qnum;
}
/*
*for mac80211 VO=0, VI=1, BE=2, BK=3
*for rtl819x BE=0, BK=1, VI=2, VO=3
*/
static int rtl_op_conf_tx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u16 queue,
const struct ieee80211_tx_queue_params *param)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
int aci;
if (queue >= AC_MAX) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
"queue number %d is incorrect!\n", queue);
return -EINVAL;
}
aci = _rtl_get_hal_qnum(queue);
mac->ac[aci].aifs = param->aifs;
mac->ac[aci].cw_min = cpu_to_le16(param->cw_min);
mac->ac[aci].cw_max = cpu_to_le16(param->cw_max);
mac->ac[aci].tx_op = cpu_to_le16(param->txop);
memcpy(&mac->edca_param[aci], param, sizeof(*param));
rtlpriv->cfg->ops->set_qos(hw, aci);
return 0;
}
static void rtl_op_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf, u32 changed)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
struct ieee80211_sta *sta = NULL;
mutex_lock(&rtlpriv->locks.conf_mutex);
if ((vif->type == NL80211_IFTYPE_ADHOC) ||
(vif->type == NL80211_IFTYPE_AP) ||
(vif->type == NL80211_IFTYPE_MESH_POINT)) {
if ((changed & BSS_CHANGED_BEACON) ||
(changed & BSS_CHANGED_BEACON_ENABLED &&
bss_conf->enable_beacon)) {
if (mac->beacon_enabled == 0) {
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
"BSS_CHANGED_BEACON_ENABLED\n");
/*start hw beacon interrupt. */
/*rtlpriv->cfg->ops->set_bcn_reg(hw); */
mac->beacon_enabled = 1;
rtlpriv->cfg->ops->update_interrupt_mask(hw,
rtlpriv->cfg->maps
[RTL_IBSS_INT_MASKS],
0);
if (rtlpriv->cfg->ops->linked_set_reg)
rtlpriv->cfg->ops->linked_set_reg(hw);
}
}
if ((changed & BSS_CHANGED_BEACON_ENABLED &&
!bss_conf->enable_beacon)) {
if (mac->beacon_enabled == 1) {
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
"ADHOC DISABLE BEACON\n");
mac->beacon_enabled = 0;
rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
rtlpriv->cfg->maps
[RTL_IBSS_INT_MASKS]);
}
}
if (changed & BSS_CHANGED_BEACON_INT) {
RT_TRACE(rtlpriv, COMP_BEACON, DBG_TRACE,
"BSS_CHANGED_BEACON_INT\n");
mac->beacon_interval = bss_conf->beacon_int;
rtlpriv->cfg->ops->set_bcn_intv(hw);
}
}
/*TODO: reference to enum ieee80211_bss_change */
if (changed & BSS_CHANGED_ASSOC) {
if (bss_conf->assoc) {
/* we should reset all sec info & cam
* before set cam after linked, we should not
* reset in disassoc, that will cause tkip->wep
* fail because some flag will be wrong */
/* reset sec info */
rtl_cam_reset_sec_info(hw);
/* reset cam to fix wep fail issue
* when change from wpa to wep */
rtl_cam_reset_all_entry(hw);
mac->link_state = MAC80211_LINKED;
mac->cnt_after_linked = 0;
mac->assoc_id = bss_conf->aid;
memcpy(mac->bssid, bss_conf->bssid, 6);
if (rtlpriv->cfg->ops->linked_set_reg)
rtlpriv->cfg->ops->linked_set_reg(hw);
if (mac->opmode == NL80211_IFTYPE_STATION && sta)
rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
"BSS_CHANGED_ASSOC\n");
} else {
if (mac->link_state == MAC80211_LINKED)
rtl_lps_leave(hw);
mac->link_state = MAC80211_NOLINK;
memset(mac->bssid, 0, 6);
/* reset sec info */
rtl_cam_reset_sec_info(hw);
rtl_cam_reset_all_entry(hw);
mac->vendor = PEER_UNKNOWN;
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
"BSS_CHANGED_UN_ASSOC\n");
}
}
if (changed & BSS_CHANGED_ERP_CTS_PROT) {
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
"BSS_CHANGED_ERP_CTS_PROT\n");
mac->use_cts_protect = bss_conf->use_cts_prot;
}
if (changed & BSS_CHANGED_ERP_PREAMBLE) {
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
"BSS_CHANGED_ERP_PREAMBLE use short preamble:%x\n",
bss_conf->use_short_preamble);
mac->short_preamble = bss_conf->use_short_preamble;
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_ACK_PREAMBLE,
&mac->short_preamble);
}
if (changed & BSS_CHANGED_ERP_SLOT) {
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
"BSS_CHANGED_ERP_SLOT\n");
if (bss_conf->use_short_slot)
mac->slot_time = RTL_SLOT_TIME_9;
else
mac->slot_time = RTL_SLOT_TIME_20;
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SLOT_TIME,
&mac->slot_time);
}
if (changed & BSS_CHANGED_HT) {
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE, "BSS_CHANGED_HT\n");
rcu_read_lock();
sta = get_sta(hw, vif, bss_conf->bssid);
if (sta) {
if (sta->ht_cap.ampdu_density >
mac->current_ampdu_density)
mac->current_ampdu_density =
sta->ht_cap.ampdu_density;
if (sta->ht_cap.ampdu_factor <
mac->current_ampdu_factor)
mac->current_ampdu_factor =
sta->ht_cap.ampdu_factor;
}
rcu_read_unlock();
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SHORTGI_DENSITY,
&mac->max_mss_density);
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AMPDU_FACTOR,
&mac->current_ampdu_factor);
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AMPDU_MIN_SPACE,
&mac->current_ampdu_density);
}
if (changed & BSS_CHANGED_BSSID) {
u32 basic_rates;
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BSSID,
(u8 *) bss_conf->bssid);
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG, "%pM\n",
bss_conf->bssid);
mac->vendor = PEER_UNKNOWN;
memcpy(mac->bssid, bss_conf->bssid, 6);
rtlpriv->cfg->ops->set_network_type(hw, vif->type);
rcu_read_lock();
sta = get_sta(hw, vif, bss_conf->bssid);
if (!sta) {
rcu_read_unlock();
goto out;
}
if (rtlhal->current_bandtype == BAND_ON_5G) {
mac->mode = WIRELESS_MODE_A;
} else {
if (sta->supp_rates[0] <= 0xf)
mac->mode = WIRELESS_MODE_B;
else
mac->mode = WIRELESS_MODE_G;
}
if (sta->ht_cap.ht_supported) {
if (rtlhal->current_bandtype == BAND_ON_2_4G)
mac->mode = WIRELESS_MODE_N_24G;
else
mac->mode = WIRELESS_MODE_N_5G;
}
/* just station need it, because ibss & ap mode will
* set in sta_add, and will be NULL here */
if (mac->opmode == NL80211_IFTYPE_STATION) {
struct rtl_sta_info *sta_entry;
sta_entry = (struct rtl_sta_info *) sta->drv_priv;
sta_entry->wireless_mode = mac->mode;
}
if (sta->ht_cap.ht_supported) {
mac->ht_enable = true;
/*
* for cisco 1252 bw20 it's wrong
* if (ht_cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
* mac->bw_40 = true;
* }
* */
}
if (changed & BSS_CHANGED_BASIC_RATES) {
/* for 5G must << RATE_6M_INDEX=4,
* because 5G have no cck rate*/
if (rtlhal->current_bandtype == BAND_ON_5G)
basic_rates = sta->supp_rates[1] << 4;
else
basic_rates = sta->supp_rates[0];
mac->basic_rates = basic_rates;
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
(u8 *) (&basic_rates));
}
rcu_read_unlock();
}
/*
* For FW LPS:
* To tell firmware we have connected
* to an AP. For 92SE/CE power save v2.
*/
if (changed & BSS_CHANGED_ASSOC) {
if (bss_conf->assoc) {
if (ppsc->fwctrl_lps) {
u8 mstatus = RT_MEDIA_CONNECT;
rtlpriv->cfg->ops->set_hw_reg(hw,
HW_VAR_H2C_FW_JOINBSSRPT,
&mstatus);
ppsc->report_linked = true;
}
} else {
if (ppsc->fwctrl_lps) {
u8 mstatus = RT_MEDIA_DISCONNECT;
rtlpriv->cfg->ops->set_hw_reg(hw,
HW_VAR_H2C_FW_JOINBSSRPT,
&mstatus);
ppsc->report_linked = false;
}
}
}
out:
mutex_unlock(&rtlpriv->locks.conf_mutex);
}
static u64 rtl_op_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
u64 tsf;
rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_CORRECT_TSF, (u8 *) (&tsf));
return tsf;
}
static void rtl_op_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
u64 tsf)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
u8 bibss = (mac->opmode == NL80211_IFTYPE_ADHOC) ? 1 : 0;
mac->tsf = tsf;
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_CORRECT_TSF, &bibss);
}
static void rtl_op_reset_tsf(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
u8 tmp = 0;
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_DUAL_TSF_RST, &tmp);
}
static void rtl_op_sta_notify(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum sta_notify_cmd cmd,
struct ieee80211_sta *sta)
{
switch (cmd) {
case STA_NOTIFY_SLEEP:
break;
case STA_NOTIFY_AWAKE:
break;
default:
break;
}
}
static int rtl_op_ampdu_action(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum ieee80211_ampdu_mlme_action action,
struct ieee80211_sta *sta, u16 tid, u16 *ssn,
u8 buf_size)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
switch (action) {
case IEEE80211_AMPDU_TX_START:
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
"IEEE80211_AMPDU_TX_START: TID:%d\n", tid);
return rtl_tx_agg_start(hw, sta, tid, ssn);
break;
case IEEE80211_AMPDU_TX_STOP:
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
"IEEE80211_AMPDU_TX_STOP: TID:%d\n", tid);
return rtl_tx_agg_stop(hw, sta, tid);
break;
case IEEE80211_AMPDU_TX_OPERATIONAL:
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
"IEEE80211_AMPDU_TX_OPERATIONAL:TID:%d\n", tid);
rtl_tx_agg_oper(hw, sta, tid);
break;
case IEEE80211_AMPDU_RX_START:
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
"IEEE80211_AMPDU_RX_START:TID:%d\n", tid);
break;
case IEEE80211_AMPDU_RX_STOP:
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
"IEEE80211_AMPDU_RX_STOP:TID:%d\n", tid);
break;
default:
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"IEEE80211_AMPDU_ERR!!!!:\n");
return -EOPNOTSUPP;
}
return 0;
}
static void rtl_op_sw_scan_start(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
mac->act_scanning = true;
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "\n");
if (mac->link_state == MAC80211_LINKED) {
rtl_lps_leave(hw);
mac->link_state = MAC80211_LINKED_SCANNING;
} else {
rtl_ips_nic_on(hw);
}
/* Dual mac */
rtlpriv->rtlhal.load_imrandiqk_setting_for2g = false;
rtlpriv->cfg->ops->led_control(hw, LED_CTL_SITE_SURVEY);
rtlpriv->cfg->ops->scan_operation_backup(hw, SCAN_OPT_BACKUP);
}
static void rtl_op_sw_scan_complete(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "\n");
mac->act_scanning = false;
/* Dual mac */
rtlpriv->rtlhal.load_imrandiqk_setting_for2g = false;
if (mac->link_state == MAC80211_LINKED_SCANNING) {
mac->link_state = MAC80211_LINKED;
if (mac->opmode == NL80211_IFTYPE_STATION) {
/* fix fwlps issue */
rtlpriv->cfg->ops->set_network_type(hw, mac->opmode);
}
}
rtlpriv->cfg->ops->scan_operation_backup(hw, SCAN_OPT_RESTORE);
}
static int rtl_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
struct ieee80211_vif *vif, struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
u8 key_type = NO_ENCRYPTION;
u8 key_idx;
bool group_key = false;
bool wep_only = false;
int err = 0;
u8 mac_addr[ETH_ALEN];
u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
u8 zero_addr[ETH_ALEN] = { 0 };
if (rtlpriv->cfg->mod_params->sw_crypto || rtlpriv->sec.use_sw_sec) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
"not open hw encryption\n");
return -ENOSPC; /*User disabled HW-crypto */
}
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
"%s hardware based encryption for keyidx: %d, mac: %pM\n",
cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
sta ? sta->addr : bcast_addr);
rtlpriv->sec.being_setkey = true;
rtl_ips_nic_on(hw);
mutex_lock(&rtlpriv->locks.conf_mutex);
/* <1> get encryption alg */
switch (key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
key_type = WEP40_ENCRYPTION;
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "alg:WEP40\n");
break;
case WLAN_CIPHER_SUITE_WEP104:
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "alg:WEP104\n");
key_type = WEP104_ENCRYPTION;
break;
case WLAN_CIPHER_SUITE_TKIP:
key_type = TKIP_ENCRYPTION;
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "alg:TKIP\n");
break;
case WLAN_CIPHER_SUITE_CCMP:
key_type = AESCCMP_ENCRYPTION;
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "alg:CCMP\n");
break;
default:
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "alg_err:%x!!!!\n",
key->cipher);
goto out_unlock;
}
if (key_type == WEP40_ENCRYPTION ||
key_type == WEP104_ENCRYPTION ||
mac->opmode == NL80211_IFTYPE_ADHOC)
rtlpriv->sec.use_defaultkey = true;
/* <2> get key_idx */
key_idx = (u8) (key->keyidx);
if (key_idx > 3)
goto out_unlock;
/* <3> if pairwise key enable_hw_sec */
group_key = !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE);
/* wep always be group key, but there are two conditions:
* 1) wep only: is just for wep enc, in this condition
* rtlpriv->sec.pairwise_enc_algorithm == NO_ENCRYPTION
* will be true & enable_hw_sec will be set when wep
* ke setting.
* 2) wep(group) + AES(pairwise): some AP like cisco
* may use it, in this condition enable_hw_sec will not
* be set when wep key setting */
/* we must reset sec_info after lingked before set key,
* or some flag will be wrong*/
if (mac->opmode == NL80211_IFTYPE_AP) {
if (!group_key || key_type == WEP40_ENCRYPTION ||
key_type == WEP104_ENCRYPTION) {
if (group_key)
wep_only = true;
rtlpriv->cfg->ops->enable_hw_sec(hw);
}
} else {
if ((!group_key) || (mac->opmode == NL80211_IFTYPE_ADHOC) ||
rtlpriv->sec.pairwise_enc_algorithm == NO_ENCRYPTION) {
if (rtlpriv->sec.pairwise_enc_algorithm ==
NO_ENCRYPTION &&
(key_type == WEP40_ENCRYPTION ||
key_type == WEP104_ENCRYPTION))
wep_only = true;
rtlpriv->sec.pairwise_enc_algorithm = key_type;
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
"set enable_hw_sec, key_type:%x(OPEN:0 WEP40:1 TKIP:2 AES:4 WEP104:5)\n",
key_type);
rtlpriv->cfg->ops->enable_hw_sec(hw);
}
}
/* <4> set key based on cmd */
switch (cmd) {
case SET_KEY:
if (wep_only) {
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
"set WEP(group/pairwise) key\n");
/* Pairwise key with an assigned MAC address. */
rtlpriv->sec.pairwise_enc_algorithm = key_type;
rtlpriv->sec.group_enc_algorithm = key_type;
/*set local buf about wep key. */
memcpy(rtlpriv->sec.key_buf[key_idx],
key->key, key->keylen);
rtlpriv->sec.key_len[key_idx] = key->keylen;
memcpy(mac_addr, zero_addr, ETH_ALEN);
} else if (group_key) { /* group key */
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
"set group key\n");
/* group key */
rtlpriv->sec.group_enc_algorithm = key_type;
/*set local buf about group key. */
memcpy(rtlpriv->sec.key_buf[key_idx],
key->key, key->keylen);
rtlpriv->sec.key_len[key_idx] = key->keylen;
memcpy(mac_addr, bcast_addr, ETH_ALEN);
} else { /* pairwise key */
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
"set pairwise key\n");
if (!sta) {
RT_ASSERT(false,
"pairwise key without mac_addr\n");
err = -EOPNOTSUPP;
goto out_unlock;
}
/* Pairwise key with an assigned MAC address. */
rtlpriv->sec.pairwise_enc_algorithm = key_type;
/*set local buf about pairwise key. */
memcpy(rtlpriv->sec.key_buf[PAIRWISE_KEYIDX],
key->key, key->keylen);
rtlpriv->sec.key_len[PAIRWISE_KEYIDX] = key->keylen;
rtlpriv->sec.pairwise_key =
rtlpriv->sec.key_buf[PAIRWISE_KEYIDX];
memcpy(mac_addr, sta->addr, ETH_ALEN);
}
rtlpriv->cfg->ops->set_key(hw, key_idx, mac_addr,
group_key, key_type, wep_only,
false);
/* <5> tell mac80211 do something: */
/*must use sw generate IV, or can not work !!!!. */
key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
key->hw_key_idx = key_idx;
if (key_type == TKIP_ENCRYPTION)
key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
break;
case DISABLE_KEY:
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
"disable key delete one entry\n");
/*set local buf about wep key. */
if (mac->opmode == NL80211_IFTYPE_AP) {
if (sta)
rtl_cam_del_entry(hw, sta->addr);
}
memset(rtlpriv->sec.key_buf[key_idx], 0, key->keylen);
rtlpriv->sec.key_len[key_idx] = 0;
memcpy(mac_addr, zero_addr, ETH_ALEN);
/*
*mac80211 will delete entrys one by one,
*so don't use rtl_cam_reset_all_entry
*or clear all entry here.
*/
rtl_cam_delete_one_entry(hw, mac_addr, key_idx);
rtl_cam_reset_sec_info(hw);
break;
default:
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"cmd_err:%x!!!!\n", cmd);
}
out_unlock:
mutex_unlock(&rtlpriv->locks.conf_mutex);
rtlpriv->sec.being_setkey = false;
return err;
}
static void rtl_op_rfkill_poll(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
bool radio_state;
bool blocked;
u8 valid = 0;
if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
return;
mutex_lock(&rtlpriv->locks.conf_mutex);
/*if Radio On return true here */
radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
if (valid) {
if (unlikely(radio_state != rtlpriv->rfkill.rfkill_state)) {
rtlpriv->rfkill.rfkill_state = radio_state;
RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
"wireless radio switch turned %s\n",
radio_state ? "on" : "off");
blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
}
}
mutex_unlock(&rtlpriv->locks.conf_mutex);
}
/* this function is called by mac80211 to flush tx buffer
* before switch channle or power save, or tx buffer packet
* maybe send after offchannel or rf sleep, this may cause
* dis-association by AP */
static void rtl_op_flush(struct ieee80211_hw *hw, bool drop)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
if (rtlpriv->intf_ops->flush)
rtlpriv->intf_ops->flush(hw, drop);
}
const struct ieee80211_ops rtl_ops = {
.start = rtl_op_start,
.stop = rtl_op_stop,
.tx = rtl_op_tx,
.add_interface = rtl_op_add_interface,
.remove_interface = rtl_op_remove_interface,
.config = rtl_op_config,
.configure_filter = rtl_op_configure_filter,
.sta_add = rtl_op_sta_add,
.sta_remove = rtl_op_sta_remove,
.set_key = rtl_op_set_key,
.conf_tx = rtl_op_conf_tx,
.bss_info_changed = rtl_op_bss_info_changed,
.get_tsf = rtl_op_get_tsf,
.set_tsf = rtl_op_set_tsf,
.reset_tsf = rtl_op_reset_tsf,
.sta_notify = rtl_op_sta_notify,
.ampdu_action = rtl_op_ampdu_action,
.sw_scan_start = rtl_op_sw_scan_start,
.sw_scan_complete = rtl_op_sw_scan_complete,
.rfkill_poll = rtl_op_rfkill_poll,
.flush = rtl_op_flush,
};
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