Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

Changes of note:

 1) Allow to schedule ICMP packets in IPVS, from Alex Gartrell.

 2) Provide FIB table ID in ipv4 route dumps just as ipv6 does, from
    David Ahern.

 3) Allow the user to ask for the statistics to be filtered out of
    ipv4/ipv6 address netlink dumps.  From Sowmini Varadhan.

 4) More work to pass the network namespace context around deep into
    various packet path APIs, starting with the netfilter hooks.  From
    Eric W Biederman.

 5) Add layer 2 TX/RX checksum offloading to qeth driver, from Thomas
    Richter.

 6) Use usec resolution for SYN/ACK RTTs in TCP, from Yuchung Cheng.

 7) Support Very High Throughput in wireless MESH code, from Bob
    Copeland.

 8) Allow setting the ageing_time in switchdev/rocker.  From Scott
    Feldman.

 9) Properly autoload L2TP type modules, from Stephen Hemminger.

10) Fix and enable offload features by default in 8139cp driver, from
    David Woodhouse.

11) Support both ipv4 and ipv6 sockets in a single vxlan device, from
    Jiri Benc.

12) Fix CWND limiting of thin streams in TCP, from Bendik Rønning
    Opstad.

13) Fix IPSEC flowcache overflows on large systems, from Steffen
    Klassert.

14) Convert bridging to track VLANs using rhashtable entries rather than
    a bitmap.  From Nikolay Aleksandrov.

15) Make TCP listener handling completely lockless, this is a major
    accomplishment.  Incoming request sockets now live in the
    established hash table just like any other socket too.

    From Eric Dumazet.

15) Provide more bridging attributes to netlink, from Nikolay
    Aleksandrov.

16) Use hash based algorithm for ipv4 multipath routing, this was very
    long overdue.  From Peter Nørlund.

17) Several y2038 cures, mostly avoiding timespec.  From Arnd Bergmann.

18) Allow non-root execution of EBPF programs, from Alexei Starovoitov.

19) Support SO_INCOMING_CPU as setsockopt, from Eric Dumazet.  This
    influences the port binding selection logic used by SO_REUSEPORT.

20) Add ipv6 support to VRF, from David Ahern.

21) Add support for Mellanox Spectrum switch ASIC, from Jiri Pirko.

22) Add rtl8xxxu Realtek wireless driver, from Jes Sorensen.

23) Implement RACK loss recovery in TCP, from Yuchung Cheng.

24) Support multipath routes in MPLS, from Roopa Prabhu.

25) Fix POLLOUT notification for listening sockets in AF_UNIX, from Eric
    Dumazet.

26) Add new QED Qlogic river, from Yuval Mintz, Manish Chopra, and
    Sudarsana Kalluru.

27) Don't fetch timestamps on AF_UNIX sockets, from Hannes Frederic
    Sowa.

28) Support ipv6 geneve tunnels, from John W Linville.

29) Add flood control support to switchdev layer, from Ido Schimmel.

30) Fix CHECKSUM_PARTIAL handling of potentially fragmented frames, from
    Hannes Frederic Sowa.

31) Support persistent maps and progs in bpf, from Daniel Borkmann.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1790 commits)
  sh_eth: use DMA barriers
  switchdev: respect SKIP_EOPNOTSUPP flag in case there is no recursion
  net: sched: kill dead code in sch_choke.c
  irda: Delete an unnecessary check before the function call "irlmp_unregister_service"
  net: dsa: mv88e6xxx: include DSA ports in VLANs
  net: dsa: mv88e6xxx: disable SA learning for DSA and CPU ports
  net/core: fix for_each_netdev_feature
  vlan: Invoke driver vlan hooks only if device is present
  arcnet/com20020: add LEDS_CLASS dependency
  bpf, verifier: annotate verbose printer with __printf
  dp83640: Only wait for timestamps for packets with timestamping enabled.
  ptp: Change ptp_class to a proper bitmask
  dp83640: Prune rx timestamp list before reading from it
  dp83640: Delay scheduled work.
  dp83640: Include hash in timestamp/packet matching
  ipv6: fix tunnel error handling
  net/mlx5e: Fix LSO vlan insertion
  net/mlx5e: Re-eanble client vlan TX acceleration
  net/mlx5e: Return error in case mlx5e_set_features() fails
  net/mlx5e: Don't allow more than max supported channels
  ...

1 files changed, 1004 insertions, 0 deletions

diff --git a/drivers/net/wireless/realtek/rtlwifi/ps.c b/drivers/net/wireless/realtek/rtlwifi/ps.c
new file mode 100644
index 000000000000..b69321d45f04
--- /dev/null
+++ b/drivers/net/wireless/realtek/rtlwifi/ps.c
@@ -0,0 +1,1004 @@
+/******************************************************************************
+ *
+ * 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.
+ *
+ * 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 "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));
+
+	/*<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;
+	RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC);
+
+	/*<3> Enable Interrupt */
+	rtlpriv->cfg->ops->enable_interrupt(hw);
+
+	/*<enable timer> */
+	rtl_watch_dog_timer_callback((unsigned long)hw);
+
+	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);
+
+	/*<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);
+
+bool rtl_ps_set_rf_state(struct ieee80211_hw *hw,
+			 enum rf_pwrstate state_toset,
+			 u32 changesource, bool protect_or_not)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+	enum rf_pwrstate rtstate;
+	bool actionallowed = false;
+	u16 rfwait_cnt = 0;
+
+	if (protect_or_not)
+		goto no_protect;
+
+	/*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;
+		}
+	}
+
+no_protect:
+	rtstate = ppsc->rfpwr_state;
+
+	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:
+		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
+			 "switch case not processed\n");
+		break;
+	}
+
+	if (actionallowed)
+		rtlpriv->cfg->ops->set_rf_power_state(hw, state_toset);
+
+	if (!protect_or_not) {
+		spin_lock(&rtlpriv->locks.rf_ps_lock);
+		ppsc->rfchange_inprogress = false;
+		spin_unlock(&rtlpriv->locks.rf_ps_lock);
+	}
+
+	return actionallowed;
+}
+EXPORT_SYMBOL(rtl_ps_set_rf_state);
+
+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) &&
+		    rtlhal->interface == INTF_PCI) {
+			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, false);
+
+	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(&rtlpriv->works.ips_nic_off_wq);
+
+	spin_lock(&rtlpriv->locks.ips_lock);
+	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);
+		}
+	}
+	spin_unlock(&rtlpriv->locks.ips_lock);
+}
+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)
+		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;
+			}
+		}
+	}
+}
+
+/*Enter the leisure power save mode.*/
+void rtl_lps_enter(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);
+	unsigned long flag;
+
+	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;
+
+	spin_lock_irqsave(&rtlpriv->locks.lps_lock, flag);
+
+	/* Idle for a while if we connect to AP a while ago. */
+	if (mac->cnt_after_linked >= 2) {
+		if (ppsc->dot11_psmode == EACTIVE) {
+			RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
+				 "Enter 802.11 power save mode...\n");
+
+			rtl_lps_set_psmode(hw, EAUTOPS);
+		}
+	}
+
+	spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flag);
+}
+EXPORT_SYMBOL(rtl_lps_enter);
+
+/*Leave the leisure power save mode.*/
+void rtl_lps_leave(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));
+	unsigned long flag;
+
+	spin_lock_irqsave(&rtlpriv->locks.lps_lock, flag);
+
+	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);
+		}
+	}
+	spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flag);
+}
+EXPORT_SYMBOL(rtl_lps_leave);
+
+/* 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));
+	unsigned long flag;
+
+	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);
+	}
+
+	spin_lock_irqsave(&rtlpriv->locks.lps_lock, flag);
+	rtl_ps_set_rf_state(hw, ERFON, RF_CHANGE_BY_PS, false);
+	spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flag);
+}
+
+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));
+	unsigned long flag;
+	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);
+
+	spin_lock_irqsave(&rtlpriv->locks.lps_lock, flag);
+	rtl_ps_set_rf_state(hw, ERFSLEEP, RF_CHANGE_BY_PS , false);
+	spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flag);
+
+	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(hw);
+	else
+		rtl_lps_leave(hw);
+}
+EXPORT_SYMBOL_GPL(rtl_lps_change_work_callback);
+
+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 = READEF2BYTE((__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;
+			}
+			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] =
+							READEF1BYTE(ie+index);
+					index += 1;
+					p2pinfo->noa_duration[i] =
+						 READEF4BYTE((__le32 *)ie+index);
+					index += 4;
+					p2pinfo->noa_interval[i] =
+						 READEF4BYTE((__le32 *)ie+index);
+					index += 4;
+					p2pinfo->noa_start_time[i] =
+						 READEF4BYTE((__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 = READEF2BYTE((__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;
+			}
+			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] =
+							READEF1BYTE(ie+index);
+					index += 1;
+					p2pinfo->noa_duration[i] =
+							 READEF4BYTE((__le32 *)ie+index);
+					index += 4;
+					p2pinfo->noa_interval[i] =
+							 READEF4BYTE((__le32 *)ie+index);
+					index += 4;
+					p2pinfo->noa_start_time[i] =
+							 READEF4BYTE((__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);