| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Larry Finger | 3650 | 76.49% | 14 | 43.75% |
| Chaoming Li | 931 | 19.51% | 1 | 3.12% |
| Ping-Ke Shih | 102 | 2.14% | 5 | 15.62% |
| Mark Schulte | 32 | 0.67% | 1 | 3.12% |
| Laura Abbott | 20 | 0.42% | 1 | 3.12% |
| Joe Perches | 16 | 0.34% | 5 | 15.62% |
| Mike McCormack | 10 | 0.21% | 1 | 3.12% |
| Kees Cook | 6 | 0.13% | 1 | 3.12% |
| Julia Lawall | 2 | 0.04% | 1 | 3.12% |
| Paul Gortmaker | 2 | 0.04% | 1 | 3.12% |
| Olivier Langlois | 1 | 0.02% | 1 | 3.12% |
| Total | 4772 | 32 |
// SPDX-License-Identifier: GPL-2.0 /* Copyright(c) 2009-2012 Realtek Corporation.*/ #include "wifi.h" #include "base.h" #include "ps.h" #include <linux/export.h> #include "btcoexist/rtl_btc.h" bool rtl_ps_enable_nic(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw)); /*<1> reset trx ring */ if (rtlhal->interface == INTF_PCI) rtlpriv->intf_ops->reset_trx_ring(hw); if (is_hal_stop(rtlhal)) RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, "Driver is already down!\n"); /*<2> Enable Adapter */ if (rtlpriv->cfg->ops->hw_init(hw)) return false; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RETRY_LIMIT, &rtlmac->retry_long); RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC); rtlpriv->cfg->ops->switch_channel(hw); rtlpriv->cfg->ops->set_channel_access(hw); rtlpriv->cfg->ops->set_bw_mode(hw, cfg80211_get_chandef_type(&hw->conf.chandef)); /*<3> Enable Interrupt */ rtlpriv->cfg->ops->enable_interrupt(hw); /*<enable timer> */ rtl_watch_dog_timer_callback(&rtlpriv->works.watchdog_timer); return true; } EXPORT_SYMBOL(rtl_ps_enable_nic); bool rtl_ps_disable_nic(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); /*<1> Stop all timer */ rtl_deinit_deferred_work(hw, true); /*<2> Disable Interrupt */ rtlpriv->cfg->ops->disable_interrupt(hw); tasklet_kill(&rtlpriv->works.irq_tasklet); /*<3> Disable Adapter */ rtlpriv->cfg->ops->hw_disable(hw); return true; } EXPORT_SYMBOL(rtl_ps_disable_nic); static bool rtl_ps_set_rf_state(struct ieee80211_hw *hw, enum rf_pwrstate state_toset, u32 changesource) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); bool actionallowed = false; u16 rfwait_cnt = 0; /*Only one thread can change *the RF state at one time, and others *should wait to be executed. */ while (true) { spin_lock(&rtlpriv->locks.rf_ps_lock); if (ppsc->rfchange_inprogress) { spin_unlock(&rtlpriv->locks.rf_ps_lock); RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, "RF Change in progress! Wait to set..state_toset(%d).\n", state_toset); /* Set RF after the previous action is done. */ while (ppsc->rfchange_inprogress) { rfwait_cnt++; mdelay(1); /*Wait too long, return false to avoid *to be stuck here. */ if (rfwait_cnt > 100) return false; } } else { ppsc->rfchange_inprogress = true; spin_unlock(&rtlpriv->locks.rf_ps_lock); break; } } switch (state_toset) { case ERFON: ppsc->rfoff_reason &= (~changesource); if ((changesource == RF_CHANGE_BY_HW) && (ppsc->hwradiooff)) { ppsc->hwradiooff = false; } if (!ppsc->rfoff_reason) { ppsc->rfoff_reason = 0; actionallowed = true; } break; case ERFOFF: if ((changesource == RF_CHANGE_BY_HW) && !ppsc->hwradiooff) { ppsc->hwradiooff = true; } ppsc->rfoff_reason |= changesource; actionallowed = true; break; case ERFSLEEP: ppsc->rfoff_reason |= changesource; actionallowed = true; break; default: pr_err("switch case %#x not processed\n", state_toset); break; } if (actionallowed) rtlpriv->cfg->ops->set_rf_power_state(hw, state_toset); spin_lock(&rtlpriv->locks.rf_ps_lock); ppsc->rfchange_inprogress = false; spin_unlock(&rtlpriv->locks.rf_ps_lock); return actionallowed; } static void _rtl_ps_inactive_ps(struct ieee80211_hw *hw) { 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)); ppsc->swrf_processing = true; if (ppsc->inactive_pwrstate == ERFON && rtlhal->interface == INTF_PCI) { if ((ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM) && RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { rtlpriv->intf_ops->disable_aspm(hw); RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); } } rtl_ps_set_rf_state(hw, ppsc->inactive_pwrstate, RF_CHANGE_BY_IPS); if (ppsc->inactive_pwrstate == ERFOFF && rtlhal->interface == INTF_PCI) { if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM && !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { rtlpriv->intf_ops->enable_aspm(hw); RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); } } ppsc->swrf_processing = false; } void rtl_ips_nic_off_wq_callback(void *data) { struct rtl_works *rtlworks = container_of_dwork_rtl(data, struct rtl_works, ips_nic_off_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)); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); enum rf_pwrstate rtstate; if (mac->opmode != NL80211_IFTYPE_STATION) { RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, "not station return\n"); return; } if (mac->p2p_in_use) return; if (mac->link_state > MAC80211_NOLINK) return; if (is_hal_stop(rtlhal)) return; if (rtlpriv->sec.being_setkey) return; if (rtlpriv->cfg->ops->bt_coex_off_before_lps) rtlpriv->cfg->ops->bt_coex_off_before_lps(hw); if (ppsc->inactiveps) { rtstate = ppsc->rfpwr_state; /* *Do not enter IPS in the following conditions: *(1) RF is already OFF or Sleep *(2) swrf_processing (indicates the IPS is still under going) *(3) Connectted (only disconnected can trigger IPS) *(4) IBSS (send Beacon) *(5) AP mode (send Beacon) *(6) monitor mode (rcv packet) */ if (rtstate == ERFON && !ppsc->swrf_processing && (mac->link_state == MAC80211_NOLINK) && !mac->act_scanning) { RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "IPSEnter(): Turn off RF\n"); ppsc->inactive_pwrstate = ERFOFF; ppsc->in_powersavemode = true; /* call before RF off */ if (rtlpriv->cfg->ops->get_btc_status()) rtlpriv->btcoexist.btc_ops->btc_ips_notify(rtlpriv, ppsc->inactive_pwrstate); /*rtl_pci_reset_trx_ring(hw); */ _rtl_ps_inactive_ps(hw); } } } void rtl_ips_nic_off(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); /* because when link with ap, mac80211 will ask us * to disable nic quickly after scan before linking, * this will cause link failed, so we delay 100ms here */ queue_delayed_work(rtlpriv->works.rtl_wq, &rtlpriv->works.ips_nic_off_wq, MSECS(100)); } /* NOTICE: any opmode should exc nic_on, or disable without * nic_on may something wrong, like adhoc TP */ void rtl_ips_nic_on(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); enum rf_pwrstate rtstate; cancel_delayed_work_sync(&rtlpriv->works.ips_nic_off_wq); mutex_lock(&rtlpriv->locks.ips_mutex); if (ppsc->inactiveps) { rtstate = ppsc->rfpwr_state; if (rtstate != ERFON && !ppsc->swrf_processing && ppsc->rfoff_reason <= RF_CHANGE_BY_IPS) { ppsc->inactive_pwrstate = ERFON; ppsc->in_powersavemode = false; _rtl_ps_inactive_ps(hw); /* call after RF on */ if (rtlpriv->cfg->ops->get_btc_status()) rtlpriv->btcoexist.btc_ops->btc_ips_notify(rtlpriv, ppsc->inactive_pwrstate); } } mutex_unlock(&rtlpriv->locks.ips_mutex); } EXPORT_SYMBOL_GPL(rtl_ips_nic_on); /*for FW LPS*/ /* *Determine if we can set Fw into PS mode *in current condition.Return TRUE if it *can enter PS mode. */ static bool rtl_get_fwlps_doze(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); u32 ps_timediff; ps_timediff = jiffies_to_msecs(jiffies - ppsc->last_delaylps_stamp_jiffies); if (ps_timediff < 2000) { RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, "Delay enter Fw LPS for DHCP, ARP, or EAPOL exchanging state\n"); return false; } if (mac->link_state != MAC80211_LINKED) return false; if (mac->opmode == NL80211_IFTYPE_ADHOC) return false; return true; } /* Change current and default preamble mode.*/ void rtl_lps_set_psmode(struct ieee80211_hw *hw, u8 rt_psmode) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); bool enter_fwlps; if (mac->opmode == NL80211_IFTYPE_ADHOC) return; if (mac->link_state != MAC80211_LINKED) return; if (ppsc->dot11_psmode == rt_psmode && rt_psmode == EACTIVE) return; /* Update power save mode configured. */ ppsc->dot11_psmode = rt_psmode; /* *<FW control LPS> *1. Enter PS mode * Set RPWM to Fw to turn RF off and send H2C fw_pwrmode * cmd to set Fw into PS mode. *2. Leave PS mode * Send H2C fw_pwrmode cmd to Fw to set Fw into Active * mode and set RPWM to turn RF on. */ if ((ppsc->fwctrl_lps) && ppsc->report_linked) { if (ppsc->dot11_psmode == EACTIVE) { RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG, "FW LPS leave ps_mode:%x\n", FW_PS_ACTIVE_MODE); enter_fwlps = false; ppsc->pwr_mode = FW_PS_ACTIVE_MODE; ppsc->smart_ps = 0; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_FW_LPS_ACTION, (u8 *)(&enter_fwlps)); if (ppsc->p2p_ps_info.opp_ps) rtl_p2p_ps_cmd(hw , P2P_PS_ENABLE); if (rtlpriv->cfg->ops->get_btc_status()) rtlpriv->btcoexist.btc_ops->btc_lps_notify(rtlpriv, rt_psmode); } else { if (rtl_get_fwlps_doze(hw)) { RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG, "FW LPS enter ps_mode:%x\n", ppsc->fwctrl_psmode); if (rtlpriv->cfg->ops->get_btc_status()) rtlpriv->btcoexist.btc_ops->btc_lps_notify(rtlpriv, rt_psmode); enter_fwlps = true; ppsc->pwr_mode = ppsc->fwctrl_psmode; ppsc->smart_ps = 2; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_FW_LPS_ACTION, (u8 *)(&enter_fwlps)); } else { /* Reset the power save related parameters. */ ppsc->dot11_psmode = EACTIVE; } } } } /* Interrupt safe routine to enter the leisure power save mode.*/ static void rtl_lps_enter_core(struct ieee80211_hw *hw) { struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); struct rtl_priv *rtlpriv = rtl_priv(hw); if (!ppsc->fwctrl_lps) return; if (rtlpriv->sec.being_setkey) return; if (rtlpriv->link_info.busytraffic) return; /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */ if (mac->cnt_after_linked < 5) return; if (mac->opmode == NL80211_IFTYPE_ADHOC) return; if (mac->link_state != MAC80211_LINKED) return; mutex_lock(&rtlpriv->locks.lps_mutex); /* Don't need to check (ppsc->dot11_psmode == EACTIVE), because * bt_ccoexist may ask to enter lps. * In normal case, this constraint move to rtl_lps_set_psmode(). */ RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, "Enter 802.11 power save mode...\n"); rtl_lps_set_psmode(hw, EAUTOPS); mutex_unlock(&rtlpriv->locks.lps_mutex); } /* Interrupt safe routine to leave the leisure power save mode.*/ static void rtl_lps_leave_core(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); mutex_lock(&rtlpriv->locks.lps_mutex); if (ppsc->fwctrl_lps) { if (ppsc->dot11_psmode != EACTIVE) { /*FIX ME */ /*rtlpriv->cfg->ops->enable_interrupt(hw); */ if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM && RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) && rtlhal->interface == INTF_PCI) { rtlpriv->intf_ops->disable_aspm(hw); RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); } RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, "Busy Traffic,Leave 802.11 power save..\n"); rtl_lps_set_psmode(hw, EACTIVE); } } mutex_unlock(&rtlpriv->locks.lps_mutex); } /* For sw LPS*/ void rtl_swlps_beacon(struct ieee80211_hw *hw, void *data, unsigned int len) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct ieee80211_hdr *hdr = data; struct ieee80211_tim_ie *tim_ie; u8 *tim; u8 tim_len; bool u_buffed; bool m_buffed; if (mac->opmode != NL80211_IFTYPE_STATION) return; if (!rtlpriv->psc.swctrl_lps) return; if (rtlpriv->mac80211.link_state != MAC80211_LINKED) return; if (!rtlpriv->psc.sw_ps_enabled) return; if (rtlpriv->psc.fwctrl_lps) return; if (likely(!(hw->conf.flags & IEEE80211_CONF_PS))) return; /* check if this really is a beacon */ if (!ieee80211_is_beacon(hdr->frame_control)) return; /* min. beacon length + FCS_LEN */ if (len <= 40 + FCS_LEN) return; /* and only beacons from the associated BSSID, please */ if (!ether_addr_equal_64bits(hdr->addr3, rtlpriv->mac80211.bssid)) return; rtlpriv->psc.last_beacon = jiffies; tim = rtl_find_ie(data, len - FCS_LEN, WLAN_EID_TIM); if (!tim) return; if (tim[1] < sizeof(*tim_ie)) return; tim_len = tim[1]; tim_ie = (struct ieee80211_tim_ie *) &tim[2]; if (!WARN_ON_ONCE(!hw->conf.ps_dtim_period)) rtlpriv->psc.dtim_counter = tim_ie->dtim_count; /* Check whenever the PHY can be turned off again. */ /* 1. What about buffered unicast traffic for our AID? */ u_buffed = ieee80211_check_tim(tim_ie, tim_len, rtlpriv->mac80211.assoc_id); /* 2. Maybe the AP wants to send multicast/broadcast data? */ m_buffed = tim_ie->bitmap_ctrl & 0x01; rtlpriv->psc.multi_buffered = m_buffed; /* unicast will process by mac80211 through * set ~IEEE80211_CONF_PS, So we just check * multicast frames here */ if (!m_buffed) { /* back to low-power land. and delay is * prevent null power save frame tx fail */ queue_delayed_work(rtlpriv->works.rtl_wq, &rtlpriv->works.ps_work, MSECS(5)); } else { RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG, "u_bufferd: %x, m_buffered: %x\n", u_buffed, m_buffed); } } EXPORT_SYMBOL_GPL(rtl_swlps_beacon); void rtl_swlps_rf_awake(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); if (!rtlpriv->psc.swctrl_lps) return; if (mac->link_state != MAC80211_LINKED) return; if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM && RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { rtlpriv->intf_ops->disable_aspm(hw); RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); } mutex_lock(&rtlpriv->locks.lps_mutex); rtl_ps_set_rf_state(hw, ERFON, RF_CHANGE_BY_PS); mutex_unlock(&rtlpriv->locks.lps_mutex); } void rtl_swlps_rfon_wq_callback(void *data) { struct rtl_works *rtlworks = container_of_dwork_rtl(data, struct rtl_works, ps_rfon_wq); struct ieee80211_hw *hw = rtlworks->hw; rtl_swlps_rf_awake(hw); } void rtl_swlps_rf_sleep(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); u8 sleep_intv; if (!rtlpriv->psc.sw_ps_enabled) return; if ((rtlpriv->sec.being_setkey) || (mac->opmode == NL80211_IFTYPE_ADHOC)) return; /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */ if ((mac->link_state != MAC80211_LINKED) || (mac->cnt_after_linked < 5)) return; if (rtlpriv->link_info.busytraffic) return; spin_lock(&rtlpriv->locks.rf_ps_lock); if (rtlpriv->psc.rfchange_inprogress) { spin_unlock(&rtlpriv->locks.rf_ps_lock); return; } spin_unlock(&rtlpriv->locks.rf_ps_lock); mutex_lock(&rtlpriv->locks.lps_mutex); rtl_ps_set_rf_state(hw, ERFSLEEP, RF_CHANGE_BY_PS); mutex_unlock(&rtlpriv->locks.lps_mutex); if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM && !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { rtlpriv->intf_ops->enable_aspm(hw); RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); } /* here is power save alg, when this beacon is DTIM * we will set sleep time to dtim_period * n; * when this beacon is not DTIM, we will set sleep * time to sleep_intv = rtlpriv->psc.dtim_counter or * MAX_SW_LPS_SLEEP_INTV(default set to 5) */ if (rtlpriv->psc.dtim_counter == 0) { if (hw->conf.ps_dtim_period == 1) sleep_intv = hw->conf.ps_dtim_period * 2; else sleep_intv = hw->conf.ps_dtim_period; } else { sleep_intv = rtlpriv->psc.dtim_counter; } if (sleep_intv > MAX_SW_LPS_SLEEP_INTV) sleep_intv = MAX_SW_LPS_SLEEP_INTV; /* this print should always be dtim_conter = 0 & * sleep = dtim_period, that meaons, we should * awake before every dtim */ RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG, "dtim_counter:%x will sleep :%d beacon_intv\n", rtlpriv->psc.dtim_counter, sleep_intv); /* we tested that 40ms is enough for sw & hw sw delay */ queue_delayed_work(rtlpriv->works.rtl_wq, &rtlpriv->works.ps_rfon_wq, MSECS(sleep_intv * mac->vif->bss_conf.beacon_int - 40)); } void rtl_lps_change_work_callback(struct work_struct *work) { struct rtl_works *rtlworks = container_of(work, struct rtl_works, lps_change_work); struct ieee80211_hw *hw = rtlworks->hw; struct rtl_priv *rtlpriv = rtl_priv(hw); if (rtlpriv->enter_ps) rtl_lps_enter_core(hw); else rtl_lps_leave_core(hw); } EXPORT_SYMBOL_GPL(rtl_lps_change_work_callback); void rtl_lps_enter(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); if (!in_interrupt()) return rtl_lps_enter_core(hw); rtlpriv->enter_ps = true; schedule_work(&rtlpriv->works.lps_change_work); } EXPORT_SYMBOL_GPL(rtl_lps_enter); void rtl_lps_leave(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); if (!in_interrupt()) return rtl_lps_leave_core(hw); rtlpriv->enter_ps = false; schedule_work(&rtlpriv->works.lps_change_work); } EXPORT_SYMBOL_GPL(rtl_lps_leave); void rtl_swlps_wq_callback(void *data) { struct rtl_works *rtlworks = container_of_dwork_rtl(data, struct rtl_works, ps_work); struct ieee80211_hw *hw = rtlworks->hw; struct rtl_priv *rtlpriv = rtl_priv(hw); bool ps = false; ps = (hw->conf.flags & IEEE80211_CONF_PS); /* we can sleep after ps null send ok */ if (rtlpriv->psc.state_inap) { rtl_swlps_rf_sleep(hw); if (rtlpriv->psc.state && !ps) { rtlpriv->psc.sleep_ms = jiffies_to_msecs(jiffies - rtlpriv->psc.last_action); } if (ps) rtlpriv->psc.last_slept = jiffies; rtlpriv->psc.last_action = jiffies; rtlpriv->psc.state = ps; } } static void rtl_p2p_noa_ie(struct ieee80211_hw *hw, void *data, unsigned int len) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct ieee80211_mgmt *mgmt = data; struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info); u8 *pos, *end, *ie; u16 noa_len; static u8 p2p_oui_ie_type[4] = {0x50, 0x6f, 0x9a, 0x09}; u8 noa_num, index , i, noa_index = 0; bool find_p2p_ie = false , find_p2p_ps_ie = false; pos = (u8 *)mgmt->u.beacon.variable; end = data + len; ie = NULL; while (pos + 1 < end) { if (pos + 2 + pos[1] > end) return; if (pos[0] == 221 && pos[1] > 4) { if (memcmp(&pos[2], p2p_oui_ie_type, 4) == 0) { ie = pos + 2+4; break; } } pos += 2 + pos[1]; } if (ie == NULL) return; find_p2p_ie = true; /*to find noa ie*/ while (ie + 1 < end) { noa_len = le16_to_cpu(*((__le16 *)&ie[1])); if (ie + 3 + ie[1] > end) return; if (ie[0] == 12) { find_p2p_ps_ie = true; if ((noa_len - 2) % 13 != 0) { RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD, "P2P notice of absence: invalid length.%d\n", noa_len); return; } else { noa_num = (noa_len - 2) / 13; if (noa_num > P2P_MAX_NOA_NUM) noa_num = P2P_MAX_NOA_NUM; } noa_index = ie[3]; if (rtlpriv->psc.p2p_ps_info.p2p_ps_mode == P2P_PS_NONE || noa_index != p2pinfo->noa_index) { RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "update NOA ie.\n"); p2pinfo->noa_index = noa_index; p2pinfo->opp_ps = (ie[4] >> 7); p2pinfo->ctwindow = ie[4] & 0x7F; p2pinfo->noa_num = noa_num; index = 5; for (i = 0; i < noa_num; i++) { p2pinfo->noa_count_type[i] = *(u8 *)(ie + index); index += 1; p2pinfo->noa_duration[i] = le32_to_cpu(*(__le32 *)ie + index); index += 4; p2pinfo->noa_interval[i] = le32_to_cpu(*(__le32 *)ie + index); index += 4; p2pinfo->noa_start_time[i] = le32_to_cpu(*(__le32 *)ie + index); index += 4; } if (p2pinfo->opp_ps == 1) { p2pinfo->p2p_ps_mode = P2P_PS_CTWINDOW; /* Driver should wait LPS entering * CTWindow */ if (rtlpriv->psc.fw_current_inpsmode) rtl_p2p_ps_cmd(hw, P2P_PS_ENABLE); } else if (p2pinfo->noa_num > 0) { p2pinfo->p2p_ps_mode = P2P_PS_NOA; rtl_p2p_ps_cmd(hw, P2P_PS_ENABLE); } else if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) { rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE); } } break; } ie += 3 + noa_len; } if (find_p2p_ie == true) { if ((p2pinfo->p2p_ps_mode > P2P_PS_NONE) && (find_p2p_ps_ie == false)) rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE); } } static void rtl_p2p_action_ie(struct ieee80211_hw *hw, void *data, unsigned int len) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct ieee80211_mgmt *mgmt = data; struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info); u8 noa_num, index , i , noa_index = 0; u8 *pos, *end, *ie; u16 noa_len; static u8 p2p_oui_ie_type[4] = {0x50, 0x6f, 0x9a, 0x09}; pos = (u8 *)&mgmt->u.action.category; end = data + len; ie = NULL; if (pos[0] == 0x7f) { if (memcmp(&pos[1], p2p_oui_ie_type, 4) == 0) ie = pos + 3+4; } if (ie == NULL) return; RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "action frame find P2P IE.\n"); /*to find noa ie*/ while (ie + 1 < end) { noa_len = le16_to_cpu(*(__le16 *)&ie[1]); if (ie + 3 + ie[1] > end) return; if (ie[0] == 12) { RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "find NOA IE.\n"); RT_PRINT_DATA(rtlpriv, COMP_FW, DBG_LOUD, "noa ie ", ie, noa_len); if ((noa_len - 2) % 13 != 0) { RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "P2P notice of absence: invalid length.%d\n", noa_len); return; } else { noa_num = (noa_len - 2) / 13; if (noa_num > P2P_MAX_NOA_NUM) noa_num = P2P_MAX_NOA_NUM; } noa_index = ie[3]; if (rtlpriv->psc.p2p_ps_info.p2p_ps_mode == P2P_PS_NONE || noa_index != p2pinfo->noa_index) { p2pinfo->noa_index = noa_index; p2pinfo->opp_ps = (ie[4] >> 7); p2pinfo->ctwindow = ie[4] & 0x7F; p2pinfo->noa_num = noa_num; index = 5; for (i = 0; i < noa_num; i++) { p2pinfo->noa_count_type[i] = *(u8 *)(ie + index); index += 1; p2pinfo->noa_duration[i] = le32_to_cpu(*(__le32 *)ie + index); index += 4; p2pinfo->noa_interval[i] = le32_to_cpu(*(__le32 *)ie + index); index += 4; p2pinfo->noa_start_time[i] = le32_to_cpu(*(__le32 *)ie + index); index += 4; } if (p2pinfo->opp_ps == 1) { p2pinfo->p2p_ps_mode = P2P_PS_CTWINDOW; /* Driver should wait LPS entering * CTWindow */ if (rtlpriv->psc.fw_current_inpsmode) rtl_p2p_ps_cmd(hw, P2P_PS_ENABLE); } else if (p2pinfo->noa_num > 0) { p2pinfo->p2p_ps_mode = P2P_PS_NOA; rtl_p2p_ps_cmd(hw, P2P_PS_ENABLE); } else if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) { rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE); } } break; } ie += 3 + noa_len; } } void rtl_p2p_ps_cmd(struct ieee80211_hw *hw , u8 p2p_ps_state) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_ps_ctl *rtlps = rtl_psc(rtl_priv(hw)); struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info); RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, " p2p state %x\n" , p2p_ps_state); switch (p2p_ps_state) { case P2P_PS_DISABLE: p2pinfo->p2p_ps_state = p2p_ps_state; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_H2C_FW_P2P_PS_OFFLOAD, &p2p_ps_state); p2pinfo->noa_index = 0; p2pinfo->ctwindow = 0; p2pinfo->opp_ps = 0; p2pinfo->noa_num = 0; p2pinfo->p2p_ps_mode = P2P_PS_NONE; if (rtlps->fw_current_inpsmode) { if (rtlps->smart_ps == 0) { rtlps->smart_ps = 2; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_H2C_FW_PWRMODE, &rtlps->pwr_mode); } } break; case P2P_PS_ENABLE: if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) { p2pinfo->p2p_ps_state = p2p_ps_state; if (p2pinfo->ctwindow > 0) { if (rtlps->smart_ps != 0) { rtlps->smart_ps = 0; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_H2C_FW_PWRMODE, &rtlps->pwr_mode); } } rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_H2C_FW_P2P_PS_OFFLOAD, &p2p_ps_state); } break; case P2P_PS_SCAN: case P2P_PS_SCAN_DONE: case P2P_PS_ALLSTASLEEP: if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) { p2pinfo->p2p_ps_state = p2p_ps_state; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_H2C_FW_P2P_PS_OFFLOAD, &p2p_ps_state); } break; default: break; } RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "ctwindow %x oppps %x\n", p2pinfo->ctwindow , p2pinfo->opp_ps); RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "count %x duration %x index %x interval %x start time %x noa num %x\n", p2pinfo->noa_count_type[0], p2pinfo->noa_duration[0], p2pinfo->noa_index, p2pinfo->noa_interval[0], p2pinfo->noa_start_time[0], p2pinfo->noa_num); RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "end\n"); } void rtl_p2p_info(struct ieee80211_hw *hw, void *data, unsigned int len) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct ieee80211_hdr *hdr = data; if (!mac->p2p) return; if (mac->link_state != MAC80211_LINKED) return; /* min. beacon length + FCS_LEN */ if (len <= 40 + FCS_LEN) return; /* and only beacons from the associated BSSID, please */ if (!ether_addr_equal_64bits(hdr->addr3, rtlpriv->mac80211.bssid)) return; /* check if this really is a beacon */ if (!(ieee80211_is_beacon(hdr->frame_control) || ieee80211_is_probe_resp(hdr->frame_control) || ieee80211_is_action(hdr->frame_control))) return; if (ieee80211_is_action(hdr->frame_control)) rtl_p2p_action_ie(hw , data , len - FCS_LEN); else rtl_p2p_noa_ie(hw , data , len - FCS_LEN); } EXPORT_SYMBOL_GPL(rtl_p2p_info);
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