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

Pull networking changes from David S Miller:

 1) Remove the ipv4 routing cache.  Now lookups go directly into the FIB
    trie and use prebuilt routes cached there.

    No more garbage collection, no more rDOS attacks on the routing
    cache.  Instead we now get predictable and consistent performance,
    no matter what the pattern of traffic we service.

    This has been almost 2 years in the making.  Special thanks to
    Julian Anastasov, Eric Dumazet, Steffen Klassert, and others who
    have helped along the way.

    I'm sure that with a change of this magnitude there will be some
    kind of fallout, but such things ought the be simple to fix at this
    point.  Luckily I'm not European so I'll be around all of August to
    fix things :-)

    The major stages of this work here are each fronted by a forced
    merge commit whose commit message contains a top-level description
    of the motivations and implementation issues.

 2) Pre-demux of established ipv4 TCP sockets, saves a route demux on
    input.

 3) TCP SYN/ACK performance tweaks from Eric Dumazet.

 4) Add namespace support for netfilter L4 conntrack helpers, from Gao
    Feng.

 5) Add config mechanism for Energy Efficient Ethernet to ethtool, from
    Yuval Mintz.

 6) Remove quadratic behavior from /proc/net/unix, from Eric Dumazet.

 7) Support for connection tracker helpers in userspace, from Pablo
    Neira Ayuso.

 8) Allow userspace driven TX load balancing functions in TEAM driver,
    from Jiri Pirko.

 9) Kill off NLMSG_PUT and RTA_PUT macros, more gross stuff with
    embedded gotos.

10) TCP Small Queues, essentially minimize the amount of TCP data queued
    up in the packet scheduler layer.  Whereas the existing BQL (Byte
    Queue Limits) limits the pkt_sched --> netdevice queuing levels,
    this controls the TCP --> pkt_sched queueing levels.

    From Eric Dumazet.

11) Reduce the number of get_page/put_page ops done on SKB fragments,
    from Alexander Duyck.

12) Implement protection against blind resets in TCP (RFC 5961), from
    Eric Dumazet.

13) Support the client side of TCP Fast Open, basically the ability to
    send data in the SYN exchange, from Yuchung Cheng.

    Basically, the sender queues up data with a sendmsg() call using
    MSG_FASTOPEN, then they do the connect() which emits the queued up
    fastopen data.

14) Avoid all the problems we get into in TCP when timers or PMTU events
    hit a locked socket.  The TCP Small Queues changes added a
    tcp_release_cb() that allows us to queue work up to the
    release_sock() caller, and that's what we use here too.  From Eric
    Dumazet.

15) Zero copy on TX support for TUN driver, from Michael S. Tsirkin.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1870 commits)
  genetlink: define lockdep_genl_is_held() when CONFIG_LOCKDEP
  r8169: revert "add byte queue limit support".
  ipv4: Change rt->rt_iif encoding.
  net: Make skb->skb_iif always track skb->dev
  ipv4: Prepare for change of rt->rt_iif encoding.
  ipv4: Remove all RTCF_DIRECTSRC handliing.
  ipv4: Really ignore ICMP address requests/replies.
  decnet: Don't set RTCF_DIRECTSRC.
  net/ipv4/ip_vti.c: Fix __rcu warnings detected by sparse.
  ipv4: Remove redundant assignment
  rds: set correct msg_namelen
  openvswitch: potential NULL deref in sample()
  tcp: dont drop MTU reduction indications
  bnx2x: Add new 57840 device IDs
  tcp: avoid oops in tcp_metrics and reset tcpm_stamp
  niu: Change niu_rbr_fill() to use unlikely() to check niu_rbr_add_page() return value
  niu: Fix to check for dma mapping errors.
  net: Fix references to out-of-scope variables in put_cmsg_compat()
  net: ethernet: davinci_emac: add pm_runtime support
  net: ethernet: davinci_emac: Remove unnecessary #include
  ...

1 files changed, 39 insertions, 17 deletions

diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 8d249d705980..63af25458fda 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -107,6 +107,19 @@ config MAC80211_DEBUGFS
 
 	  Say N unless you know you need this.
 
+config MAC80211_MESSAGE_TRACING
+	bool "Trace all mac80211 debug messages"
+	depends on MAC80211
+	---help---
+	  Select this option to have mac80211 register the
+	  mac80211_msg trace subsystem with tracepoints to
+	  collect all debugging messages, independent of
+	  printing them into the kernel log.
+
+	  The overhead in this option is that all the messages
+	  need to be present in the binary and formatted at
+	  runtime for tracing.
+
 menuconfig MAC80211_DEBUG_MENU
 	bool "Select mac80211 debugging features"
 	depends on MAC80211
@@ -140,26 +153,35 @@ config MAC80211_VERBOSE_DEBUG
 
 	  Do not select this option.
 
-config MAC80211_HT_DEBUG
-	bool "Verbose HT debugging"
+config MAC80211_MLME_DEBUG
+	bool "Verbose managed MLME output"
 	depends on MAC80211_DEBUG_MENU
 	---help---
-	  This option enables 802.11n High Throughput features
-	  debug tracing output.
-
-	  It should not be selected on production systems as some
+	  Selecting this option causes mac80211 to print out
+	  debugging messages for the managed-mode MLME. It
+	  should not be selected on production systems as some
 	  of the messages are remotely triggerable.
 
 	  Do not select this option.
 
-config MAC80211_TKIP_DEBUG
-	bool "Verbose TKIP debugging"
+config MAC80211_STA_DEBUG
+	bool "Verbose station debugging"
 	depends on MAC80211_DEBUG_MENU
 	---help---
 	  Selecting this option causes mac80211 to print out
-	  very verbose TKIP debugging messages. It should not
-	  be selected on production systems as those messages
-	  are remotely triggerable.
+	  debugging messages for station addition/removal.
+
+	  Do not select this option.
+
+config MAC80211_HT_DEBUG
+	bool "Verbose HT debugging"
+	depends on MAC80211_DEBUG_MENU
+	---help---
+	  This option enables 802.11n High Throughput features
+	  debug tracing output.
+
+	  It should not be selected on production systems as some
+	  of the messages are remotely triggerable.
 
 	  Do not select this option.
 
@@ -174,7 +196,7 @@ config MAC80211_IBSS_DEBUG
 
 	  Do not select this option.
 
-config MAC80211_VERBOSE_PS_DEBUG
+config MAC80211_PS_DEBUG
 	bool "Verbose powersave mode debugging"
 	depends on MAC80211_DEBUG_MENU
 	---help---
@@ -186,7 +208,7 @@ config MAC80211_VERBOSE_PS_DEBUG
 
 	  Do not select this option.
 
-config MAC80211_VERBOSE_MPL_DEBUG
+config MAC80211_MPL_DEBUG
 	bool "Verbose mesh peer link debugging"
 	depends on MAC80211_DEBUG_MENU
 	depends on MAC80211_MESH
@@ -199,7 +221,7 @@ config MAC80211_VERBOSE_MPL_DEBUG
 
 	  Do not select this option.
 
-config MAC80211_VERBOSE_MPATH_DEBUG
+config MAC80211_MPATH_DEBUG
 	bool "Verbose mesh path debugging"
 	depends on MAC80211_DEBUG_MENU
 	depends on MAC80211_MESH
@@ -212,7 +234,7 @@ config MAC80211_VERBOSE_MPATH_DEBUG
 
 	  Do not select this option.
 
-config MAC80211_VERBOSE_MHWMP_DEBUG
+config MAC80211_MHWMP_DEBUG
 	bool "Verbose mesh HWMP routing debugging"
 	depends on MAC80211_DEBUG_MENU
 	depends on MAC80211_MESH
@@ -225,7 +247,7 @@ config MAC80211_VERBOSE_MHWMP_DEBUG
 
 	  Do not select this option.
 
-config MAC80211_VERBOSE_MESH_SYNC_DEBUG
+config MAC80211_MESH_SYNC_DEBUG
 	bool "Verbose mesh mesh synchronization debugging"
 	depends on MAC80211_DEBUG_MENU
 	depends on MAC80211_MESH
@@ -236,7 +258,7 @@ config MAC80211_VERBOSE_MESH_SYNC_DEBUG
 
 	  Do not select this option.
 
-config MAC80211_VERBOSE_TDLS_DEBUG
+config MAC80211_TDLS_DEBUG
 	bool "Verbose TDLS debugging"
 	depends on MAC80211_DEBUG_MENU
 	---help---