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

Pull networking updates from David Miller:

 1) The addition of nftables.  No longer will we need protocol aware
    firewall filtering modules, it can all live in userspace.

    At the core of nftables is a, for lack of a better term, virtual
    machine that executes byte codes to inspect packet or metadata
    (arriving interface index, etc.) and make verdict decisions.

    Besides support for loading packet contents and comparing them, the
    interpreter supports lookups in various datastructures as
    fundamental operations.  For example sets are supports, and
    therefore one could create a set of whitelist IP address entries
    which have ACCEPT verdicts attached to them, and use the appropriate
    byte codes to do such lookups.

    Since the interpreted code is composed in userspace, userspace can
    do things like optimize things before giving it to the kernel.

    Another major improvement is the capability of atomically updating
    portions of the ruleset.  In the existing netfilter implementation,
    one has to update the entire rule set in order to make a change and
    this is very expensive.

    Userspace tools exist to create nftables rules using existing
    netfilter rule sets, but both kernel implementations will need to
    co-exist for quite some time as we transition from the old to the
    new stuff.

    Kudos to Patrick McHardy, Pablo Neira Ayuso, and others who have
    worked so hard on this.

 2) Daniel Borkmann and Hannes Frederic Sowa made several improvements
    to our pseudo-random number generator, mostly used for things like
    UDP port randomization and netfitler, amongst other things.

    In particular the taus88 generater is updated to taus113, and test
    cases are added.

 3) Support 64-bit rates in HTB and TBF schedulers, from Eric Dumazet
    and Yang Yingliang.

 4) Add support for new 577xx tigon3 chips to tg3 driver, from Nithin
    Sujir.

 5) Fix two fatal flaws in TCP dynamic right sizing, from Eric Dumazet,
    Neal Cardwell, and Yuchung Cheng.

 6) Allow IP_TOS and IP_TTL to be specified in sendmsg() ancillary
    control message data, much like other socket option attributes.
    From Francesco Fusco.

 7) Allow applications to specify a cap on the rate computed
    automatically by the kernel for pacing flows, via a new
    SO_MAX_PACING_RATE socket option.  From Eric Dumazet.

 8) Make the initial autotuned send buffer sizing in TCP more closely
    reflect actual needs, from Eric Dumazet.

 9) Currently early socket demux only happens for TCP sockets, but we
    can do it for connected UDP sockets too.  Implementation from Shawn
    Bohrer.

10) Refactor inet socket demux with the goal of improving hash demux
    performance for listening sockets.  With the main goals being able
    to use RCU lookups on even request sockets, and eliminating the
    listening lock contention.  From Eric Dumazet.

11) The bonding layer has many demuxes in it's fast path, and an RCU
    conversion was started back in 3.11, several changes here extend the
    RCU usage to even more locations.  From Ding Tianhong and Wang
    Yufen, based upon suggestions by Nikolay Aleksandrov and Veaceslav
    Falico.

12) Allow stackability of segmentation offloads to, in particular, allow
    segmentation offloading over tunnels.  From Eric Dumazet.

13) Significantly improve the handling of secret keys we input into the
    various hash functions in the inet hashtables, TCP fast open, as
    well as syncookies.  From Hannes Frederic Sowa.  The key fundamental
    operation is "net_get_random_once()" which uses static keys.

    Hannes even extended this to ipv4/ipv6 fragmentation handling and
    our generic flow dissector.

14) The generic driver layer takes care now to set the driver data to
    NULL on device removal, so it's no longer necessary for drivers to
    explicitly set it to NULL any more.  Many drivers have been cleaned
    up in this way, from Jingoo Han.

15) Add a BPF based packet scheduler classifier, from Daniel Borkmann.

16) Improve CRC32 interfaces and generic SKB checksum iterators so that
    SCTP's checksumming can more cleanly be handled.  Also from Daniel
    Borkmann.

17) Add a new PMTU discovery mode, IP_PMTUDISC_INTERFACE, which forces
    using the interface MTU value.  This helps avoid PMTU attacks,
    particularly on DNS servers.  From Hannes Frederic Sowa.

18) Use generic XPS for transmit queue steering rather than internal
    (re-)implementation in virtio-net.  From Jason Wang.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1622 commits)
  random32: add test cases for taus113 implementation
  random32: upgrade taus88 generator to taus113 from errata paper
  random32: move rnd_state to linux/random.h
  random32: add prandom_reseed_late() and call when nonblocking pool becomes initialized
  random32: add periodic reseeding
  random32: fix off-by-one in seeding requirement
  PHY: Add RTL8201CP phy_driver to realtek
  xtsonic: add missing platform_set_drvdata() in xtsonic_probe()
  macmace: add missing platform_set_drvdata() in mace_probe()
  ethernet/arc/arc_emac: add missing platform_set_drvdata() in arc_emac_probe()
  ipv6: protect for_each_sk_fl_rcu in mem_check with rcu_read_lock_bh
  vlan: Implement vlan_dev_get_egress_qos_mask as an inline.
  ixgbe: add warning when max_vfs is out of range.
  igb: Update link modes display in ethtool
  netfilter: push reasm skb through instead of original frag skbs
  ip6_output: fragment outgoing reassembled skb properly
  MAINTAINERS: mv643xx_eth: take over maintainership from Lennart
  net_sched: tbf: support of 64bit rates
  ixgbe: deleting dfwd stations out of order can cause null ptr deref
  ixgbe: fix build err, num_rx_queues is only available with CONFIG_RPS
  ...

1 files changed, 30 insertions, 46 deletions

diff --git a/drivers/net/wireless/ath/ath10k/pci.h b/drivers/net/wireless/ath/ath10k/pci.h
index 871bb33..52fb7b9 100644
--- a/drivers/net/wireless/ath/ath10k/pci.h
+++ b/drivers/net/wireless/ath/ath10k/pci.h
@@ -43,22 +43,23 @@ struct bmi_xfer {
 	u32 resp_len;
 };
 
+enum ath10k_pci_compl_state {
+	ATH10K_PCI_COMPL_FREE = 0,
+	ATH10K_PCI_COMPL_SEND,
+	ATH10K_PCI_COMPL_RECV,
+};
+
 struct ath10k_pci_compl {
 	struct list_head list;
-	int send_or_recv;
-	struct ce_state *ce_state;
-	struct hif_ce_pipe_info *pipe_info;
-	void *transfer_context;
+	enum ath10k_pci_compl_state state;
+	struct ath10k_ce_pipe *ce_state;
+	struct ath10k_pci_pipe *pipe_info;
+	struct sk_buff *skb;
 	unsigned int nbytes;
 	unsigned int transfer_id;
 	unsigned int flags;
 };
 
-/* compl_state.send_or_recv */
-#define HIF_CE_COMPLETE_FREE 0
-#define HIF_CE_COMPLETE_SEND 1
-#define HIF_CE_COMPLETE_RECV 2
-
 /*
  * PCI-specific Target state
  *
@@ -152,17 +153,16 @@ struct service_to_pipe {
 
 enum ath10k_pci_features {
 	ATH10K_PCI_FEATURE_MSI_X		= 0,
-	ATH10K_PCI_FEATURE_HW_1_0_WORKAROUND	= 1,
-	ATH10K_PCI_FEATURE_SOC_POWER_SAVE	= 2,
+	ATH10K_PCI_FEATURE_SOC_POWER_SAVE	= 1,
 
 	/* keep last */
 	ATH10K_PCI_FEATURE_COUNT
 };
 
 /* Per-pipe state. */
-struct hif_ce_pipe_info {
+struct ath10k_pci_pipe {
 	/* Handle of underlying Copy Engine */
-	struct ce_state *ce_hdl;
+	struct ath10k_ce_pipe *ce_hdl;
 
 	/* Our pipe number; facilitiates use of pipe_info ptrs. */
 	u8 pipe_num;
@@ -178,9 +178,6 @@ struct hif_ce_pipe_info {
 	/* List of free CE completion slots */
 	struct list_head compl_free;
 
-	/* Limit the number of outstanding send requests. */
-	int num_sends_allowed;
-
 	struct ath10k_pci *ar_pci;
 	struct tasklet_struct intr;
 };
@@ -190,7 +187,6 @@ struct ath10k_pci {
 	struct device *dev;
 	struct ath10k *ar;
 	void __iomem *mem;
-	int cacheline_sz;
 
 	DECLARE_BITMAP(features, ATH10K_PCI_FEATURE_COUNT);
 
@@ -219,7 +215,7 @@ struct ath10k_pci {
 
 	bool compl_processing;
 
-	struct hif_ce_pipe_info pipe_info[CE_COUNT_MAX];
+	struct ath10k_pci_pipe pipe_info[CE_COUNT_MAX];
 
 	struct ath10k_hif_cb msg_callbacks_current;
 
@@ -227,16 +223,13 @@ struct ath10k_pci {
 	u32 fw_indicator_address;
 
 	/* Copy Engine used for Diagnostic Accesses */
-	struct ce_state *ce_diag;
+	struct ath10k_ce_pipe *ce_diag;
 
 	/* FIXME: document what this really protects */
 	spinlock_t ce_lock;
 
 	/* Map CE id to ce_state */
-	struct ce_state *ce_id_to_state[CE_COUNT_MAX];
-
-	/* makes sure that dummy reads are atomic */
-	spinlock_t hw_v1_workaround_lock;
+	struct ath10k_ce_pipe ce_states[CE_COUNT_MAX];
 };
 
 static inline struct ath10k_pci *ath10k_pci_priv(struct ath10k *ar)
@@ -244,14 +237,18 @@ static inline struct ath10k_pci *ath10k_pci_priv(struct ath10k *ar)
 	return ar->hif.priv;
 }
 
-static inline u32 ath10k_pci_reg_read32(void __iomem *mem, u32 addr)
+static inline u32 ath10k_pci_reg_read32(struct ath10k *ar, u32 addr)
 {
-	return ioread32(mem + PCIE_LOCAL_BASE_ADDRESS + addr);
+	struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+
+	return ioread32(ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS + addr);
 }
 
-static inline void ath10k_pci_reg_write32(void __iomem *mem, u32 addr, u32 val)
+static inline void ath10k_pci_reg_write32(struct ath10k *ar, u32 addr, u32 val)
 {
-	iowrite32(val, mem + PCIE_LOCAL_BASE_ADDRESS + addr);
+	struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+
+	iowrite32(val, ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS + addr);
 }
 
 #define ATH_PCI_RESET_WAIT_MAX 10 /* ms */
@@ -310,23 +307,8 @@ static inline void ath10k_pci_write32(struct ath10k *ar, u32 offset,
 				      u32 value)
 {
 	struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
-	void __iomem *addr = ar_pci->mem;
-
-	if (test_bit(ATH10K_PCI_FEATURE_HW_1_0_WORKAROUND, ar_pci->features)) {
-		unsigned long irq_flags;
 
-		spin_lock_irqsave(&ar_pci->hw_v1_workaround_lock, irq_flags);
-
-		ioread32(addr+offset+4); /* 3rd read prior to write */
-		ioread32(addr+offset+4); /* 2nd read prior to write */
-		ioread32(addr+offset+4); /* 1st read prior to write */
-		iowrite32(value, addr+offset);
-
-		spin_unlock_irqrestore(&ar_pci->hw_v1_workaround_lock,
-				       irq_flags);
-	} else {
-		iowrite32(value, addr+offset);
-	}
+	iowrite32(value, ar_pci->mem + offset);
 }
 
 static inline u32 ath10k_pci_read32(struct ath10k *ar, u32 offset)
@@ -336,15 +318,17 @@ static inline u32 ath10k_pci_read32(struct ath10k *ar, u32 offset)
 	return ioread32(ar_pci->mem + offset);
 }
 
-void ath10k_do_pci_wake(struct ath10k *ar);
+int ath10k_do_pci_wake(struct ath10k *ar);
 void ath10k_do_pci_sleep(struct ath10k *ar);
 
-static inline void ath10k_pci_wake(struct ath10k *ar)
+static inline int ath10k_pci_wake(struct ath10k *ar)
 {
 	struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
 
 	if (test_bit(ATH10K_PCI_FEATURE_SOC_POWER_SAVE, ar_pci->features))
-		ath10k_do_pci_wake(ar);
+		return ath10k_do_pci_wake(ar);
+
+	return 0;
 }
 
 static inline void ath10k_pci_sleep(struct ath10k *ar)