| /****************************************************************************** |
| * |
| * Copyright(c) 2009-2010 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 <linux/ip.h> |
| #include "wifi.h" |
| #include "rc.h" |
| #include "base.h" |
| #include "efuse.h" |
| #include "cam.h" |
| #include "ps.h" |
| #include "regd.h" |
| |
| /* |
| *NOTICE!!!: This file will be very big, we hsould |
| *keep it clear under follwing roles: |
| * |
| *This file include follwing part, so, if you add new |
| *functions into this file, please check which part it |
| *should includes. or check if you should add new part |
| *for this file: |
| * |
| *1) mac80211 init functions |
| *2) tx information functions |
| *3) functions called by core.c |
| *4) wq & timer callback functions |
| *5) frame process functions |
| *6) sysfs functions |
| *7) ... |
| */ |
| |
| /********************************************************* |
| * |
| * mac80211 init functions |
| * |
| *********************************************************/ |
| static struct ieee80211_channel rtl_channeltable[] = { |
| {.center_freq = 2412, .hw_value = 1,}, |
| {.center_freq = 2417, .hw_value = 2,}, |
| {.center_freq = 2422, .hw_value = 3,}, |
| {.center_freq = 2427, .hw_value = 4,}, |
| {.center_freq = 2432, .hw_value = 5,}, |
| {.center_freq = 2437, .hw_value = 6,}, |
| {.center_freq = 2442, .hw_value = 7,}, |
| {.center_freq = 2447, .hw_value = 8,}, |
| {.center_freq = 2452, .hw_value = 9,}, |
| {.center_freq = 2457, .hw_value = 10,}, |
| {.center_freq = 2462, .hw_value = 11,}, |
| {.center_freq = 2467, .hw_value = 12,}, |
| {.center_freq = 2472, .hw_value = 13,}, |
| {.center_freq = 2484, .hw_value = 14,}, |
| }; |
| |
| static struct ieee80211_rate rtl_ratetable[] = { |
| {.bitrate = 10, .hw_value = 0x00,}, |
| {.bitrate = 20, .hw_value = 0x01,}, |
| {.bitrate = 55, .hw_value = 0x02,}, |
| {.bitrate = 110, .hw_value = 0x03,}, |
| {.bitrate = 60, .hw_value = 0x04,}, |
| {.bitrate = 90, .hw_value = 0x05,}, |
| {.bitrate = 120, .hw_value = 0x06,}, |
| {.bitrate = 180, .hw_value = 0x07,}, |
| {.bitrate = 240, .hw_value = 0x08,}, |
| {.bitrate = 360, .hw_value = 0x09,}, |
| {.bitrate = 480, .hw_value = 0x0a,}, |
| {.bitrate = 540, .hw_value = 0x0b,}, |
| }; |
| |
| static const struct ieee80211_supported_band rtl_band_2ghz = { |
| .band = IEEE80211_BAND_2GHZ, |
| |
| .channels = rtl_channeltable, |
| .n_channels = ARRAY_SIZE(rtl_channeltable), |
| |
| .bitrates = rtl_ratetable, |
| .n_bitrates = ARRAY_SIZE(rtl_ratetable), |
| |
| .ht_cap = {0}, |
| }; |
| |
| static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw, |
| struct ieee80211_sta_ht_cap *ht_cap) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| struct rtl_phy *rtlphy = &(rtlpriv->phy); |
| |
| ht_cap->ht_supported = true; |
| ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | |
| IEEE80211_HT_CAP_SGI_40 | |
| IEEE80211_HT_CAP_SGI_20 | |
| IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU; |
| |
| /* |
| *Maximum length of AMPDU that the STA can receive. |
| *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets) |
| */ |
| ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; |
| |
| /*Minimum MPDU start spacing , */ |
| ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16; |
| |
| ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; |
| |
| /* |
| *hw->wiphy->bands[IEEE80211_BAND_2GHZ] |
| *base on ant_num |
| *rx_mask: RX mask |
| *if rx_ant =1 rx_mask[0]=0xff;==>MCS0-MCS7 |
| *if rx_ant =2 rx_mask[1]=0xff;==>MCS8-MCS15 |
| *if rx_ant >=3 rx_mask[2]=0xff; |
| *if BW_40 rx_mask[4]=0x01; |
| *highest supported RX rate |
| */ |
| if (get_rf_type(rtlphy) == RF_1T2R || get_rf_type(rtlphy) == RF_2T2R) { |
| |
| RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T2R or 2T2R\n")); |
| |
| ht_cap->mcs.rx_mask[0] = 0xFF; |
| ht_cap->mcs.rx_mask[1] = 0xFF; |
| ht_cap->mcs.rx_mask[4] = 0x01; |
| |
| ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15); |
| } else if (get_rf_type(rtlphy) == RF_1T1R) { |
| |
| RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T1R\n")); |
| |
| ht_cap->mcs.rx_mask[0] = 0xFF; |
| ht_cap->mcs.rx_mask[1] = 0x00; |
| ht_cap->mcs.rx_mask[4] = 0x01; |
| |
| ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS7); |
| } |
| } |
| |
| static void _rtl_init_mac80211(struct ieee80211_hw *hw) |
| { |
| struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw)); |
| struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); |
| struct ieee80211_supported_band *sband; |
| |
| /* <1> use mac->bands as mem for hw->wiphy->bands */ |
| sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]); |
| |
| /* |
| * <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ] |
| * to default value(1T1R) |
| */ |
| memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]), &rtl_band_2ghz, |
| sizeof(struct ieee80211_supported_band)); |
| |
| /* <3> init ht cap base on ant_num */ |
| _rtl_init_hw_ht_capab(hw, &sband->ht_cap); |
| |
| /* <4> set mac->sband to wiphy->sband */ |
| hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband; |
| |
| /* <5> set hw caps */ |
| hw->flags = IEEE80211_HW_SIGNAL_DBM | |
| IEEE80211_HW_RX_INCLUDES_FCS | |
| IEEE80211_HW_BEACON_FILTER | IEEE80211_HW_AMPDU_AGGREGATION | /*PS*/ |
| /*IEEE80211_HW_SUPPORTS_PS | */ |
| /*IEEE80211_HW_PS_NULLFUNC_STACK | */ |
| /*IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */ |
| IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0; |
| |
| hw->wiphy->interface_modes = |
| BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC); |
| |
| hw->wiphy->rts_threshold = 2347; |
| |
| hw->queues = AC_MAX; |
| hw->extra_tx_headroom = RTL_TX_HEADER_SIZE; |
| |
| /* TODO: Correct this value for our hw */ |
| /* TODO: define these hard code value */ |
| hw->channel_change_time = 100; |
| hw->max_listen_interval = 5; |
| hw->max_rate_tries = 4; |
| /* hw->max_rates = 1; */ |
| |
| /* <6> mac address */ |
| if (is_valid_ether_addr(rtlefuse->dev_addr)) { |
| SET_IEEE80211_PERM_ADDR(hw, rtlefuse->dev_addr); |
| } else { |
| u8 rtlmac[] = { 0x00, 0xe0, 0x4c, 0x81, 0x92, 0x00 }; |
| get_random_bytes((rtlmac + (ETH_ALEN - 1)), 1); |
| SET_IEEE80211_PERM_ADDR(hw, rtlmac); |
| } |
| |
| } |
| |
| static void _rtl_init_deferred_work(struct ieee80211_hw *hw) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| |
| /* <1> timer */ |
| init_timer(&rtlpriv->works.watchdog_timer); |
| setup_timer(&rtlpriv->works.watchdog_timer, |
| rtl_watch_dog_timer_callback, (unsigned long)hw); |
| |
| /* <2> work queue */ |
| rtlpriv->works.hw = hw; |
| rtlpriv->works.rtl_wq = alloc_workqueue(rtlpriv->cfg->name, 0, 0); |
| INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq, |
| (void *)rtl_watchdog_wq_callback); |
| INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq, |
| (void *)rtl_ips_nic_off_wq_callback); |
| |
| } |
| |
| void rtl_deinit_deferred_work(struct ieee80211_hw *hw) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| |
| del_timer_sync(&rtlpriv->works.watchdog_timer); |
| |
| cancel_delayed_work(&rtlpriv->works.watchdog_wq); |
| cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq); |
| } |
| |
| void rtl_init_rfkill(struct ieee80211_hw *hw) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| |
| bool radio_state; |
| bool blocked; |
| u8 valid = 0; |
| |
| /*set init state to on */ |
| rtlpriv->rfkill.rfkill_state = 1; |
| wiphy_rfkill_set_hw_state(hw->wiphy, 0); |
| |
| radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid); |
| |
| if (valid) { |
| printk(KERN_INFO "rtlwifi: wireless switch is %s\n", |
| rtlpriv->rfkill.rfkill_state ? "on" : "off"); |
| |
| rtlpriv->rfkill.rfkill_state = radio_state; |
| |
| blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1; |
| wiphy_rfkill_set_hw_state(hw->wiphy, blocked); |
| } |
| |
| wiphy_rfkill_start_polling(hw->wiphy); |
| } |
| |
| void rtl_deinit_rfkill(struct ieee80211_hw *hw) |
| { |
| wiphy_rfkill_stop_polling(hw->wiphy); |
| } |
| |
| int rtl_init_core(struct ieee80211_hw *hw) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw)); |
| |
| /* <1> init mac80211 */ |
| _rtl_init_mac80211(hw); |
| rtlmac->hw = hw; |
| |
| /* <2> rate control register */ |
| hw->rate_control_algorithm = "rtl_rc"; |
| |
| /* |
| * <3> init CRDA must come after init |
| * mac80211 hw in _rtl_init_mac80211. |
| */ |
| if (rtl_regd_init(hw, rtl_reg_notifier)) { |
| RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("REGD init failed\n")); |
| return 1; |
| } else { |
| /* CRDA regd hint must after init CRDA */ |
| if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) { |
| RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, |
| ("regulatory_hint fail\n")); |
| } |
| } |
| |
| /* <4> locks */ |
| mutex_init(&rtlpriv->locks.conf_mutex); |
| spin_lock_init(&rtlpriv->locks.ips_lock); |
| spin_lock_init(&rtlpriv->locks.irq_th_lock); |
| spin_lock_init(&rtlpriv->locks.h2c_lock); |
| spin_lock_init(&rtlpriv->locks.rf_ps_lock); |
| spin_lock_init(&rtlpriv->locks.rf_lock); |
| spin_lock_init(&rtlpriv->locks.lps_lock); |
| |
| rtlmac->link_state = MAC80211_NOLINK; |
| |
| /* <5> init deferred work */ |
| _rtl_init_deferred_work(hw); |
| |
| return 0; |
| } |
| |
| void rtl_deinit_core(struct ieee80211_hw *hw) |
| { |
| } |
| |
| void rtl_init_rx_config(struct ieee80211_hw *hw) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); |
| |
| rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf)); |
| rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_MGT_FILTER, |
| (u8 *) (&mac->rx_mgt_filter)); |
| rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_CTRL_FILTER, |
| (u8 *) (&mac->rx_ctrl_filter)); |
| rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_DATA_FILTER, |
| (u8 *) (&mac->rx_data_filter)); |
| } |
| |
| /********************************************************* |
| * |
| * tx information functions |
| * |
| *********************************************************/ |
| static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw, |
| struct rtl_tcb_desc *tcb_desc, |
| struct ieee80211_tx_info *info) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| u8 rate_flag = info->control.rates[0].flags; |
| |
| tcb_desc->use_shortpreamble = false; |
| |
| /* 1M can only use Long Preamble. 11B spec */ |
| if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M]) |
| return; |
| else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) |
| tcb_desc->use_shortpreamble = true; |
| |
| return; |
| } |
| |
| static void _rtl_query_shortgi(struct ieee80211_hw *hw, |
| struct rtl_tcb_desc *tcb_desc, |
| struct ieee80211_tx_info *info) |
| { |
| struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); |
| u8 rate_flag = info->control.rates[0].flags; |
| |
| tcb_desc->use_shortgi = false; |
| |
| if (!mac->ht_enable) |
| return; |
| |
| if (!mac->sgi_40 && !mac->sgi_20) |
| return; |
| |
| if ((mac->bw_40 == true) && mac->sgi_40) |
| tcb_desc->use_shortgi = true; |
| else if ((mac->bw_40 == false) && mac->sgi_20) |
| tcb_desc->use_shortgi = true; |
| |
| if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI)) |
| tcb_desc->use_shortgi = false; |
| |
| } |
| |
| static void _rtl_query_protection_mode(struct ieee80211_hw *hw, |
| struct rtl_tcb_desc *tcb_desc, |
| struct ieee80211_tx_info *info) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| u8 rate_flag = info->control.rates[0].flags; |
| |
| /* Common Settings */ |
| tcb_desc->rts_stbc = false; |
| tcb_desc->cts_enable = false; |
| tcb_desc->rts_sc = 0; |
| tcb_desc->rts_bw = false; |
| tcb_desc->rts_use_shortpreamble = false; |
| tcb_desc->rts_use_shortgi = false; |
| |
| if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) { |
| /* Use CTS-to-SELF in protection mode. */ |
| tcb_desc->rts_enable = true; |
| tcb_desc->cts_enable = true; |
| tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M]; |
| } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) { |
| /* Use RTS-CTS in protection mode. */ |
| tcb_desc->rts_enable = true; |
| tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M]; |
| } |
| |
| } |
| |
| static void _rtl_txrate_selectmode(struct ieee80211_hw *hw, |
| struct rtl_tcb_desc *tcb_desc) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); |
| |
| if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) { |
| if (mac->opmode == NL80211_IFTYPE_STATION) |
| tcb_desc->ratr_index = 0; |
| else if (mac->opmode == NL80211_IFTYPE_ADHOC) { |
| if (tcb_desc->multicast || tcb_desc->broadcast) { |
| tcb_desc->hw_rate = |
| rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M]; |
| tcb_desc->use_driver_rate = 1; |
| } else { |
| /* TODO */ |
| } |
| } |
| } |
| |
| if (rtlpriv->dm.useramask) { |
| /* TODO adhoc and station handled differently in the future */ |
| tcb_desc->mac_id = 0; |
| |
| if ((mac->mode == WIRELESS_MODE_N_24G) || |
| (mac->mode == WIRELESS_MODE_N_5G)) { |
| tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB; |
| } else if (mac->mode & WIRELESS_MODE_G) { |
| tcb_desc->ratr_index = RATR_INX_WIRELESS_GB; |
| } else if (mac->mode & WIRELESS_MODE_B) { |
| tcb_desc->ratr_index = RATR_INX_WIRELESS_B; |
| } |
| } |
| |
| } |
| |
| static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw, |
| struct rtl_tcb_desc *tcb_desc) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); |
| |
| tcb_desc->packet_bw = false; |
| |
| if (!mac->bw_40 || !mac->ht_enable) |
| return; |
| |
| if (tcb_desc->multicast || tcb_desc->broadcast) |
| return; |
| |
| /*use legency rate, shall use 20MHz */ |
| if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M]) |
| return; |
| |
| tcb_desc->packet_bw = true; |
| } |
| |
| static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| struct rtl_phy *rtlphy = &(rtlpriv->phy); |
| u8 hw_rate; |
| |
| if (get_rf_type(rtlphy) == RF_2T2R) |
| hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15]; |
| else |
| hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7]; |
| |
| return hw_rate; |
| } |
| |
| void rtl_get_tcb_desc(struct ieee80211_hw *hw, |
| struct ieee80211_tx_info *info, |
| struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw)); |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); |
| struct ieee80211_rate *txrate; |
| __le16 fc = hdr->frame_control; |
| |
| memset(tcb_desc, 0, sizeof(struct rtl_tcb_desc)); |
| |
| if (ieee80211_is_data(fc)) { |
| txrate = ieee80211_get_tx_rate(hw, info); |
| tcb_desc->hw_rate = txrate->hw_value; |
| |
| /* |
| *we set data rate RTL_RC_CCK_RATE1M |
| *in rtl_rc.c if skb is special data or |
| *mgt which need low data rate. |
| */ |
| |
| /* |
| *So tcb_desc->hw_rate is just used for |
| *special data and mgt frames |
| */ |
| if (tcb_desc->hw_rate < rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M]) { |
| tcb_desc->use_driver_rate = true; |
| tcb_desc->ratr_index = 7; |
| |
| tcb_desc->hw_rate = |
| rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M]; |
| tcb_desc->disable_ratefallback = 1; |
| } else { |
| /* |
| *because hw will nerver use hw_rate |
| *when tcb_desc->use_driver_rate = false |
| *so we never set highest N rate here, |
| *and N rate will all be controled by FW |
| *when tcb_desc->use_driver_rate = false |
| */ |
| if (rtlmac->ht_enable) { |
| tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw); |
| } else { |
| if (rtlmac->mode == WIRELESS_MODE_B) { |
| tcb_desc->hw_rate = |
| rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M]; |
| } else { |
| tcb_desc->hw_rate = |
| rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M]; |
| } |
| } |
| } |
| |
| if (is_multicast_ether_addr(ieee80211_get_DA(hdr))) |
| tcb_desc->multicast = 1; |
| else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr))) |
| tcb_desc->broadcast = 1; |
| |
| _rtl_txrate_selectmode(hw, tcb_desc); |
| _rtl_query_bandwidth_mode(hw, tcb_desc); |
| _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info); |
| _rtl_query_shortgi(hw, tcb_desc, info); |
| _rtl_query_protection_mode(hw, tcb_desc, info); |
| } else { |
| tcb_desc->use_driver_rate = true; |
| tcb_desc->ratr_index = 7; |
| tcb_desc->disable_ratefallback = 1; |
| tcb_desc->mac_id = 0; |
| |
| tcb_desc->hw_rate = rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M]; |
| } |
| } |
| EXPORT_SYMBOL(rtl_get_tcb_desc); |
| |
| bool rtl_tx_mgmt_proc(struct ieee80211_hw *hw, struct sk_buff *skb) |
| { |
| struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); |
| __le16 fc = hdr->frame_control; |
| |
| if (ieee80211_is_auth(fc)) { |
| RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, ("MAC80211_LINKING\n")); |
| rtl_ips_nic_on(hw); |
| |
| mac->link_state = MAC80211_LINKING; |
| } |
| |
| return true; |
| } |
| |
| bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx) |
| { |
| struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| __le16 fc = hdr->frame_control; |
| u8 *act = (u8 *) (((u8 *) skb->data + MAC80211_3ADDR_LEN)); |
| u8 category; |
| |
| if (!ieee80211_is_action(fc)) |
| return true; |
| |
| category = *act; |
| act++; |
| switch (category) { |
| case ACT_CAT_BA: |
| switch (*act) { |
| case ACT_ADDBAREQ: |
| if (mac->act_scanning) |
| return false; |
| |
| RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG, |
| ("%s ACT_ADDBAREQ From :" MAC_FMT "\n", |
| is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2))); |
| break; |
| case ACT_ADDBARSP: |
| RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG, |
| ("%s ACT_ADDBARSP From :" MAC_FMT "\n", |
| is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2))); |
| break; |
| case ACT_DELBA: |
| RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG, |
| ("ACT_ADDBADEL From :" MAC_FMT "\n", |
| MAC_ARG(hdr->addr2))); |
| break; |
| } |
| break; |
| default: |
| break; |
| } |
| |
| return true; |
| } |
| |
| /*should call before software enc*/ |
| u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); |
| struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); |
| __le16 fc = hdr->frame_control; |
| u16 ether_type; |
| u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb); |
| const struct iphdr *ip; |
| |
| if (!ieee80211_is_data(fc)) |
| return false; |
| |
| if (ieee80211_is_nullfunc(fc)) |
| return true; |
| |
| ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len + |
| SNAP_SIZE + PROTOC_TYPE_SIZE); |
| ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE); |
| |
| if (ETH_P_IP == ether_type) { |
| if (IPPROTO_UDP == ip->protocol) { |
| struct udphdr *udp = (struct udphdr *)((u8 *) ip + |
| (ip->ihl << 2)); |
| if (((((u8 *) udp)[1] == 68) && |
| (((u8 *) udp)[3] == 67)) || |
| ((((u8 *) udp)[1] == 67) && |
| (((u8 *) udp)[3] == 68))) { |
| /* |
| * 68 : UDP BOOTP client |
| * 67 : UDP BOOTP server |
| */ |
| RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), |
| DBG_DMESG, ("dhcp %s !!\n", |
| (is_tx) ? "Tx" : "Rx")); |
| |
| if (is_tx) { |
| rtl_lps_leave(hw); |
| ppsc->last_delaylps_stamp_jiffies = |
| jiffies; |
| } |
| |
| return true; |
| } |
| } |
| } else if (ETH_P_ARP == ether_type) { |
| if (is_tx) { |
| rtl_lps_leave(hw); |
| ppsc->last_delaylps_stamp_jiffies = jiffies; |
| } |
| |
| return true; |
| } else if (ETH_P_PAE == ether_type) { |
| RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG, |
| ("802.1X %s EAPOL pkt!!\n", (is_tx) ? "Tx" : "Rx")); |
| |
| if (is_tx) { |
| rtl_lps_leave(hw); |
| ppsc->last_delaylps_stamp_jiffies = jiffies; |
| } |
| |
| return true; |
| } else if (ETH_P_IPV6 == ether_type) { |
| /* IPv6 */ |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /********************************************************* |
| * |
| * functions called by core.c |
| * |
| *********************************************************/ |
| int rtl_tx_agg_start(struct ieee80211_hw *hw, const u8 *ra, u16 tid, u16 *ssn) |
| { |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| struct rtl_tid_data *tid_data; |
| struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); |
| |
| RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, |
| ("on ra = %pM tid = %d\n", ra, tid)); |
| |
| if (unlikely(tid >= MAX_TID_COUNT)) |
| return -EINVAL; |
| |
| if (mac->tids[tid].agg.agg_state != RTL_AGG_OFF) { |
| RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, |
| ("Start AGG when state is not RTL_AGG_OFF !\n")); |
| return -ENXIO; |
| } |
| |
| tid_data = &mac->tids[tid]; |
| *ssn = SEQ_TO_SN(tid_data->seq_number); |
| |
| RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, |
| ("HW queue is empty tid:%d\n", tid)); |
| tid_data->agg.agg_state = RTL_AGG_ON; |
| |
| ieee80211_start_tx_ba_cb_irqsafe(mac->vif, ra, tid); |
| |
| return 0; |
| } |
| |
| int rtl_tx_agg_stop(struct ieee80211_hw *hw, const u8 * ra, u16 tid) |
| { |
| int ssn = -1; |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); |
| struct rtl_tid_data *tid_data; |
| |
| if (!ra) { |
| RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n")); |
| return -EINVAL; |
| } |
| |
| if (unlikely(tid >= MAX_TID_COUNT)) |
| return -EINVAL; |
| |
| if (mac->tids[tid].agg.agg_state != RTL_AGG_ON) |
| RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, |
| ("Stopping AGG while state not ON or starting\n")); |
| |
| tid_data = &mac->tids[tid]; |
| ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4; |
| |
| mac->tids[tid].agg.agg_state = RTL_AGG_OFF; |
| |
| ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, ra, tid); |
| |
| return 0; |
| } |
| |
| /********************************************************* |
| * |
| * wq & timer callback functions |
| * |
| *********************************************************/ |
| void rtl_watchdog_wq_callback(void *data) |
| { |
| struct rtl_works *rtlworks = container_of_dwork_rtl(data, |
| struct rtl_works, |
| watchdog_wq); |
| struct ieee80211_hw *hw = rtlworks->hw; |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); |
| struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); |
| |
| bool busytraffic = false; |
| bool higher_busytraffic = false; |
| bool higher_busyrxtraffic = false; |
| bool higher_busytxtraffic = false; |
| |
| u8 idx = 0; |
| u32 rx_cnt_inp4eriod = 0; |
| u32 tx_cnt_inp4eriod = 0; |
| u32 aver_rx_cnt_inperiod = 0; |
| u32 aver_tx_cnt_inperiod = 0; |
| |
| bool enter_ps = false; |
| |
| if (is_hal_stop(rtlhal)) |
| return; |
| |
| /* <1> Determine if action frame is allowed */ |
| if (mac->link_state > MAC80211_NOLINK) { |
| if (mac->cnt_after_linked < 20) |
| mac->cnt_after_linked++; |
| } else { |
| mac->cnt_after_linked = 0; |
| } |
| |
| /* <2> DM */ |
| rtlpriv->cfg->ops->dm_watchdog(hw); |
| |
| /* |
| *<3> to check if traffic busy, if |
| * busytraffic we don't change channel |
| */ |
| if (mac->link_state >= MAC80211_LINKED) { |
| |
| /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */ |
| for (idx = 0; idx <= 2; idx++) { |
| rtlpriv->link_info.num_rx_in4period[idx] = |
| rtlpriv->link_info.num_rx_in4period[idx + 1]; |
| rtlpriv->link_info.num_tx_in4period[idx] = |
| rtlpriv->link_info.num_tx_in4period[idx + 1]; |
| } |
| rtlpriv->link_info.num_rx_in4period[3] = |
| rtlpriv->link_info.num_rx_inperiod; |
| rtlpriv->link_info.num_tx_in4period[3] = |
| rtlpriv->link_info.num_tx_inperiod; |
| for (idx = 0; idx <= 3; idx++) { |
| rx_cnt_inp4eriod += |
| rtlpriv->link_info.num_rx_in4period[idx]; |
| tx_cnt_inp4eriod += |
| rtlpriv->link_info.num_tx_in4period[idx]; |
| } |
| aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4; |
| aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4; |
| |
| /* (2) check traffic busy */ |
| if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100) |
| busytraffic = true; |
| |
| /* Higher Tx/Rx data. */ |
| if (aver_rx_cnt_inperiod > 4000 || |
| aver_tx_cnt_inperiod > 4000) { |
| higher_busytraffic = true; |
| |
| /* Extremely high Rx data. */ |
| if (aver_rx_cnt_inperiod > 5000) |
| higher_busyrxtraffic = true; |
| else |
| higher_busytxtraffic = false; |
| } |
| |
| if (((rtlpriv->link_info.num_rx_inperiod + |
| rtlpriv->link_info.num_tx_inperiod) > 8) || |
| (rtlpriv->link_info.num_rx_inperiod > 2)) |
| enter_ps = false; |
| else |
| enter_ps = true; |
| |
| /* LeisurePS only work in infra mode. */ |
| if (enter_ps) |
| rtl_lps_enter(hw); |
| else |
| rtl_lps_leave(hw); |
| } |
| |
| rtlpriv->link_info.num_rx_inperiod = 0; |
| rtlpriv->link_info.num_tx_inperiod = 0; |
| |
| rtlpriv->link_info.busytraffic = busytraffic; |
| rtlpriv->link_info.higher_busytraffic = higher_busytraffic; |
| rtlpriv->link_info.higher_busyrxtraffic = higher_busyrxtraffic; |
| |
| } |
| |
| void rtl_watch_dog_timer_callback(unsigned long data) |
| { |
| struct ieee80211_hw *hw = (struct ieee80211_hw *)data; |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| |
| queue_delayed_work(rtlpriv->works.rtl_wq, |
| &rtlpriv->works.watchdog_wq, 0); |
| |
| mod_timer(&rtlpriv->works.watchdog_timer, |
| jiffies + MSECS(RTL_WATCH_DOG_TIME)); |
| } |
| |
| /********************************************************* |
| * |
| * sysfs functions |
| * |
| *********************************************************/ |
| static ssize_t rtl_show_debug_level(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct ieee80211_hw *hw = dev_get_drvdata(d); |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| |
| return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel); |
| } |
| |
| static ssize_t rtl_store_debug_level(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct ieee80211_hw *hw = dev_get_drvdata(d); |
| struct rtl_priv *rtlpriv = rtl_priv(hw); |
| unsigned long val; |
| int ret; |
| |
| ret = strict_strtoul(buf, 0, &val); |
| if (ret) { |
| printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf); |
| } else { |
| rtlpriv->dbg.global_debuglevel = val; |
| printk(KERN_DEBUG "debuglevel:%x\n", |
| rtlpriv->dbg.global_debuglevel); |
| } |
| |
| return strnlen(buf, count); |
| } |
| |
| static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO, |
| rtl_show_debug_level, rtl_store_debug_level); |
| |
| static struct attribute *rtl_sysfs_entries[] = { |
| |
| &dev_attr_debug_level.attr, |
| |
| NULL |
| }; |
| |
| /* |
| * "name" is folder name witch will be |
| * put in device directory like : |
| * sys/devices/pci0000:00/0000:00:1c.4/ |
| * 0000:06:00.0/rtl_sysfs |
| */ |
| struct attribute_group rtl_attribute_group = { |
| .name = "rtlsysfs", |
| .attrs = rtl_sysfs_entries, |
| }; |
| |
| MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>"); |
| MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>"); |
| MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>"); |
| MODULE_LICENSE("GPL"); |
| MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core"); |
| |
| static int __init rtl_core_module_init(void) |
| { |
| if (rtl_rate_control_register()) |
| printk(KERN_ERR "rtlwifi: Unable to register rtl_rc," |
| "use default RC !!\n"); |
| return 0; |
| } |
| |
| static void __exit rtl_core_module_exit(void) |
| { |
| /*RC*/ |
| rtl_rate_control_unregister(); |
| } |
| |
| module_init(rtl_core_module_init); |
| module_exit(rtl_core_module_exit); |