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

Pull networking updates from David Miller:
 "Highlights:

   1) Steady transitioning of the BPF instructure to a generic spot so
      all kernel subsystems can make use of it, from Alexei Starovoitov.

   2) SFC driver supports busy polling, from Alexandre Rames.

   3) Take advantage of hash table in UDP multicast delivery, from David
      Held.

   4) Lighten locking, in particular by getting rid of the LRU lists, in
      inet frag handling.  From Florian Westphal.

   5) Add support for various RFC6458 control messages in SCTP, from
      Geir Ola Vaagland.

   6) Allow to filter bridge forwarding database dumps by device, from
      Jamal Hadi Salim.

   7) virtio-net also now supports busy polling, from Jason Wang.

   8) Some low level optimization tweaks in pktgen from Jesper Dangaard
      Brouer.

   9) Add support for ipv6 address generation modes, so that userland
      can have some input into the process.  From Jiri Pirko.

  10) Consolidate common TCP connection request code in ipv4 and ipv6,
      from Octavian Purdila.

  11) New ARP packet logger in netfilter, from Pablo Neira Ayuso.

  12) Generic resizable RCU hash table, with intial users in netlink and
      nftables.  From Thomas Graf.

  13) Maintain a name assignment type so that userspace can see where a
      network device name came from (enumerated by kernel, assigned
      explicitly by userspace, etc.) From Tom Gundersen.

  14) Automatic flow label generation on transmit in ipv6, from Tom
      Herbert.

  15) New packet timestamping facilities from Willem de Bruijn, meant to
      assist in measuring latencies going into/out-of the packet
      scheduler, latency from TCP data transmission to ACK, etc"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1536 commits)
  cxgb4 : Disable recursive mailbox commands when enabling vi
  net: reduce USB network driver config options.
  tg3: Modify tg3_tso_bug() to handle multiple TX rings
  amd-xgbe: Perform phy connect/disconnect at dev open/stop
  amd-xgbe: Use dma_set_mask_and_coherent to set DMA mask
  net: sun4i-emac: fix memory leak on bad packet
  sctp: fix possible seqlock seadlock in sctp_packet_transmit()
  Revert "net: phy: Set the driver when registering an MDIO bus device"
  cxgb4vf: Turn off SGE RX/TX Callback Timers and interrupts in PCI shutdown routine
  team: Simplify return path of team_newlink
  bridge: Update outdated comment on promiscuous mode
  net-timestamp: ACK timestamp for bytestreams
  net-timestamp: TCP timestamping
  net-timestamp: SCHED timestamp on entering packet scheduler
  net-timestamp: add key to disambiguate concurrent datagrams
  net-timestamp: move timestamp flags out of sk_flags
  net-timestamp: extend SCM_TIMESTAMPING ancillary data struct
  cxgb4i : Move stray CPL definitions to cxgb4 driver
  tcp: reduce spurious retransmits due to transient SACK reneging
  qlcnic: Initialize dcbnl_ops before register_netdev
  ...

1 files changed, 148 insertions, 14 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 2ca8f7e06174..7fc13a8da675 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -22,6 +22,7 @@
 #include <linux/interrupt.h>
 #include <linux/leds.h>
 #include <linux/completion.h>
+#include <linux/time.h>
 
 #include "common.h"
 #include "debug.h"
@@ -35,10 +36,7 @@ extern struct ieee80211_ops ath9k_ops;
 extern int ath9k_modparam_nohwcrypt;
 extern int led_blink;
 extern bool is_ath9k_unloaded;
-
-struct ath_config {
-	u16 txpowlimit;
-};
+extern int ath9k_use_chanctx;
 
 /*************************/
 /* Descriptor Management */
@@ -167,7 +165,6 @@ struct ath_txq {
 	u32 axq_ampdu_depth;
 	bool stopped;
 	bool axq_tx_inprogress;
-	struct list_head axq_acq;
 	struct list_head txq_fifo[ATH_TXFIFO_DEPTH];
 	u8 txq_headidx;
 	u8 txq_tailidx;
@@ -185,7 +182,8 @@ struct ath_atx_ac {
 
 struct ath_frame_info {
 	struct ath_buf *bf;
-	int framelen;
+	u16 framelen;
+	s8 txq;
 	enum ath9k_key_type keytype;
 	u8 keyix;
 	u8 rtscts_rate;
@@ -280,8 +278,9 @@ struct ath_node {
 struct ath_tx_control {
 	struct ath_txq *txq;
 	struct ath_node *an;
-	u8 paprd;
 	struct ieee80211_sta *sta;
+	u8 paprd;
+	bool force_channel;
 };
 
 
@@ -325,6 +324,116 @@ struct ath_rx {
 	u32 ampdu_ref;
 };
 
+struct ath_chanctx {
+	struct cfg80211_chan_def chandef;
+	struct list_head vifs;
+	struct list_head acq[IEEE80211_NUM_ACS];
+	int hw_queue_base;
+
+	/* do not dereference, use for comparison only */
+	struct ieee80211_vif *primary_sta;
+
+	struct ath_beacon_config beacon;
+	struct ath9k_hw_cal_data caldata;
+	struct timespec tsf_ts;
+	u64 tsf_val;
+	u32 last_beacon;
+
+	u16 txpower;
+	bool offchannel;
+	bool stopped;
+	bool active;
+	bool assigned;
+	bool switch_after_beacon;
+};
+
+enum ath_chanctx_event {
+	ATH_CHANCTX_EVENT_BEACON_PREPARE,
+	ATH_CHANCTX_EVENT_BEACON_SENT,
+	ATH_CHANCTX_EVENT_TSF_TIMER,
+	ATH_CHANCTX_EVENT_BEACON_RECEIVED,
+	ATH_CHANCTX_EVENT_ASSOC,
+	ATH_CHANCTX_EVENT_SWITCH,
+	ATH_CHANCTX_EVENT_UNASSIGN,
+	ATH_CHANCTX_EVENT_ENABLE_MULTICHANNEL,
+};
+
+enum ath_chanctx_state {
+	ATH_CHANCTX_STATE_IDLE,
+	ATH_CHANCTX_STATE_WAIT_FOR_BEACON,
+	ATH_CHANCTX_STATE_WAIT_FOR_TIMER,
+	ATH_CHANCTX_STATE_SWITCH,
+	ATH_CHANCTX_STATE_FORCE_ACTIVE,
+};
+
+struct ath_chanctx_sched {
+	bool beacon_pending;
+	bool offchannel_pending;
+	enum ath_chanctx_state state;
+	u8 beacon_miss;
+
+	u32 next_tbtt;
+	u32 switch_start_time;
+	unsigned int offchannel_duration;
+	unsigned int channel_switch_time;
+
+	/* backup, in case the hardware timer fails */
+	struct timer_list timer;
+};
+
+enum ath_offchannel_state {
+	ATH_OFFCHANNEL_IDLE,
+	ATH_OFFCHANNEL_PROBE_SEND,
+	ATH_OFFCHANNEL_PROBE_WAIT,
+	ATH_OFFCHANNEL_SUSPEND,
+	ATH_OFFCHANNEL_ROC_START,
+	ATH_OFFCHANNEL_ROC_WAIT,
+	ATH_OFFCHANNEL_ROC_DONE,
+};
+
+struct ath_offchannel {
+	struct ath_chanctx chan;
+	struct timer_list timer;
+	struct cfg80211_scan_request *scan_req;
+	struct ieee80211_vif *scan_vif;
+	int scan_idx;
+	enum ath_offchannel_state state;
+	struct ieee80211_channel *roc_chan;
+	struct ieee80211_vif *roc_vif;
+	int roc_duration;
+	int duration;
+};
+#define ath_for_each_chanctx(_sc, _ctx)                             \
+	for (ctx = &sc->chanctx[0];                                 \
+	     ctx <= &sc->chanctx[ARRAY_SIZE(sc->chanctx) - 1];      \
+	     ctx++)
+
+void ath9k_fill_chanctx_ops(void);
+void ath9k_chanctx_force_active(struct ieee80211_hw *hw,
+				struct ieee80211_vif *vif);
+static inline struct ath_chanctx *
+ath_chanctx_get(struct ieee80211_chanctx_conf *ctx)
+{
+	struct ath_chanctx **ptr = (void *) ctx->drv_priv;
+	return *ptr;
+}
+void ath_chanctx_init(struct ath_softc *sc);
+void ath_chanctx_set_channel(struct ath_softc *sc, struct ath_chanctx *ctx,
+			     struct cfg80211_chan_def *chandef);
+void ath_chanctx_switch(struct ath_softc *sc, struct ath_chanctx *ctx,
+			struct cfg80211_chan_def *chandef);
+void ath_chanctx_check_active(struct ath_softc *sc, struct ath_chanctx *ctx);
+void ath_offchannel_timer(unsigned long data);
+void ath_offchannel_channel_change(struct ath_softc *sc);
+void ath_chanctx_offchan_switch(struct ath_softc *sc,
+				struct ieee80211_channel *chan);
+struct ath_chanctx *ath_chanctx_get_oper_chan(struct ath_softc *sc,
+					      bool active);
+void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
+		       enum ath_chanctx_event ev);
+void ath_chanctx_timer(unsigned long data);
+
+int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan);
 int ath_startrecv(struct ath_softc *sc);
 bool ath_stoprecv(struct ath_softc *sc);
 u32 ath_calcrxfilter(struct ath_softc *sc);
@@ -341,6 +450,7 @@ void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq);
 void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an);
 void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an);
 void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq);
+void ath_txq_schedule_all(struct ath_softc *sc);
 int ath_tx_init(struct ath_softc *sc, int nbufs);
 int ath_txq_update(struct ath_softc *sc, int qnum,
 		   struct ath9k_tx_queue_info *q);
@@ -370,32 +480,47 @@ void ath9k_release_buffered_frames(struct ieee80211_hw *hw,
 /********/
 
 struct ath_vif {
+	struct list_head list;
+
 	struct ieee80211_vif *vif;
 	struct ath_node mcast_node;
 	int av_bslot;
-	bool primary_sta_vif;
 	__le64 tsf_adjust; /* TSF adjustment for staggered beacons */
 	struct ath_buf *av_bcbuf;
+	struct ath_chanctx *chanctx;
 
 	/* P2P Client */
 	struct ieee80211_noa_data noa;
+
+	/* P2P GO */
+	u8 noa_index;
+	u32 offchannel_start;
+	u32 offchannel_duration;
+
+	u32 periodic_noa_start;
+	u32 periodic_noa_duration;
 };
 
 struct ath9k_vif_iter_data {
 	u8 hw_macaddr[ETH_ALEN]; /* address of the first vif */
 	u8 mask[ETH_ALEN]; /* bssid mask */
 	bool has_hw_macaddr;
+	u8 slottime;
+	bool beacons;
 
 	int naps;      /* number of AP vifs */
 	int nmeshes;   /* number of mesh vifs */
 	int nstations; /* number of station vifs */
 	int nwds;      /* number of WDS vifs */
 	int nadhocs;   /* number of adhoc vifs */
+	struct ieee80211_vif *primary_sta;
 };
 
-void ath9k_calculate_iter_data(struct ieee80211_hw *hw,
-			       struct ieee80211_vif *vif,
+void ath9k_calculate_iter_data(struct ath_softc *sc,
+			       struct ath_chanctx *ctx,
 			       struct ath9k_vif_iter_data *iter_data);
+void ath9k_calculate_summary_state(struct ath_softc *sc,
+				   struct ath_chanctx *ctx);
 
 /*******************/
 /* Beacon Handling */
@@ -458,6 +583,7 @@ void ath9k_csa_update(struct ath_softc *sc);
 #define ATH_PAPRD_TIMEOUT         100 /* msecs */
 #define ATH_PLL_WORK_INTERVAL     100
 
+void ath_chanctx_work(struct work_struct *work);
 void ath_tx_complete_poll_work(struct work_struct *work);
 void ath_reset_work(struct work_struct *work);
 bool ath_hw_check(struct ath_softc *sc);
@@ -473,6 +599,7 @@ void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type);
 void ath_ps_full_sleep(unsigned long data);
 void ath9k_p2p_ps_timer(void *priv);
 void ath9k_update_p2p_ps(struct ath_softc *sc, struct ieee80211_vif *vif);
+void __ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop);
 
 /**********/
 /* BTCOEX */
@@ -702,6 +829,8 @@ void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs);
 #define PS_BEACON_SYNC            BIT(4)
 #define PS_WAIT_FOR_ANI           BIT(5)
 
+#define ATH9K_NUM_CHANCTX  2 /* supports 2 operating channels */
+
 struct ath_softc {
 	struct ieee80211_hw *hw;
 	struct device *dev;
@@ -720,6 +849,7 @@ struct ath_softc {
 	struct mutex mutex;
 	struct work_struct paprd_work;
 	struct work_struct hw_reset_work;
+	struct work_struct chanctx_work;
 	struct completion paprd_complete;
 	wait_queue_head_t tx_wait;
 
@@ -738,23 +868,27 @@ struct ath_softc {
 	short nvifs;
 	unsigned long ps_usecount;
 
-	struct ath_config config;
 	struct ath_rx rx;
 	struct ath_tx tx;
 	struct ath_beacon beacon;
 
+	struct cfg80211_chan_def cur_chandef;
+	struct ath_chanctx chanctx[ATH9K_NUM_CHANCTX];
+	struct ath_chanctx *cur_chan;
+	struct ath_chanctx *next_chan;
+	spinlock_t chan_lock;
+	struct ath_offchannel offchannel;
+	struct ath_chanctx_sched sched;
+
 #ifdef CONFIG_MAC80211_LEDS
 	bool led_registered;
 	char led_name[32];
 	struct led_classdev led_cdev;
 #endif
 
-	struct ath9k_hw_cal_data caldata;
-
 #ifdef CONFIG_ATH9K_DEBUGFS
 	struct ath9k_debug debug;
 #endif
-	struct ath_beacon_config cur_beacon_conf;
 	struct delayed_work tx_complete_work;
 	struct delayed_work hw_pll_work;
 	struct timer_list sleep_timer;