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

Pull networking changes from David Miller:

 1) GRE now works over ipv6, from Dmitry Kozlov.

 2) Make SCTP more network namespace aware, from Eric Biederman.

 3) TEAM driver now works with non-ethernet devices, from Jiri Pirko.

 4) Make openvswitch network namespace aware, from Pravin B Shelar.

 5) IPV6 NAT implementation, from Patrick McHardy.

 6) Server side support for TCP Fast Open, from Jerry Chu and others.

 7) Packet BPF filter supports MOD and XOR, from Eric Dumazet and Daniel
    Borkmann.

 8) Increate the loopback default MTU to 64K, from Eric Dumazet.

 9) Use a per-task rather than per-socket page fragment allocator for
    outgoing networking traffic.  This benefits processes that have very
    many mostly idle sockets, which is quite common.

    From Eric Dumazet.

10) Use up to 32K for page fragment allocations, with fallbacks to
    smaller sizes when higher order page allocations fail.  Benefits are
    a) less segments for driver to process b) less calls to page
    allocator c) less waste of space.

    From Eric Dumazet.

11) Allow GRO to be used on GRE tunnels, from Eric Dumazet.

12) VXLAN device driver, one way to handle VLAN issues such as the
    limitation of 4096 VLAN IDs yet still have some level of isolation.
    From Stephen Hemminger.

13) As usual there is a large boatload of driver changes, with the scale
    perhaps tilted towards the wireless side this time around.

Fix up various fairly trivial conflicts, mostly caused by the user
namespace changes.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1012 commits)
  hyperv: Add buffer for extended info after the RNDIS response message.
  hyperv: Report actual status in receive completion packet
  hyperv: Remove extra allocated space for recv_pkt_list elements
  hyperv: Fix page buffer handling in rndis_filter_send_request()
  hyperv: Fix the missing return value in rndis_filter_set_packet_filter()
  hyperv: Fix the max_xfer_size in RNDIS initialization
  vxlan: put UDP socket in correct namespace
  vxlan: Depend on CONFIG_INET
  sfc: Fix the reported priorities of different filter types
  sfc: Remove EFX_FILTER_FLAG_RX_OVERRIDE_IP
  sfc: Fix loopback self-test with separate_tx_channels=1
  sfc: Fix MCDI structure field lookup
  sfc: Add parentheses around use of bitfield macro arguments
  sfc: Fix null function pointer in efx_sriov_channel_type
  vxlan: virtual extensible lan
  igmp: export symbol ip_mc_leave_group
  netlink: add attributes to fdb interface
  tg3: unconditionally select HWMON support when tg3 is enabled.
  Revert "net: ti cpsw ethernet: allow reading phy interface mode from DT"
  gre: fix sparse warning
  ...

1 files changed, 28 insertions, 9 deletions

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index ca447b35b83..c7fc1072494 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -439,7 +439,9 @@ tcp_stdurg - BOOLEAN
 tcp_synack_retries - INTEGER
 	Number of times SYNACKs for a passive TCP connection attempt will
 	be retransmitted. Should not be higher than 255. Default value
-	is 5, which corresponds to ~180seconds.
+	is 5, which corresponds to 31seconds till the last retransmission
+	with the current initial RTO of 1second. With this the final timeout
+	for a passive TCP connection will happen after 63seconds.
 
 tcp_syncookies - BOOLEAN
 	Only valid when the kernel was compiled with CONFIG_SYNCOOKIES
@@ -465,20 +467,37 @@ tcp_syncookies - BOOLEAN
 tcp_fastopen - INTEGER
 	Enable TCP Fast Open feature (draft-ietf-tcpm-fastopen) to send data
 	in the opening SYN packet. To use this feature, the client application
-	must not use connect(). Instead, it should use sendmsg() or sendto()
-	with MSG_FASTOPEN flag which performs a TCP handshake automatically.
-
-	The values (bitmap) are:
-	1: Enables sending data in the opening SYN on the client
-	5: Enables sending data in the opening SYN on the client regardless
-	   of cookie availability.
+	must use sendmsg() or sendto() with MSG_FASTOPEN flag rather than
+	connect() to perform a TCP handshake automatically.
+
+	The values (bitmap) are
+	1: Enables sending data in the opening SYN on the client.
+	2: Enables TCP Fast Open on the server side, i.e., allowing data in
+	   a SYN packet to be accepted and passed to the application before
+	   3-way hand shake finishes.
+	4: Send data in the opening SYN regardless of cookie availability and
+	   without a cookie option.
+	0x100: Accept SYN data w/o validating the cookie.
+	0x200: Accept data-in-SYN w/o any cookie option present.
+	0x400/0x800: Enable Fast Open on all listeners regardless of the
+	   TCP_FASTOPEN socket option. The two different flags designate two
+	   different ways of setting max_qlen without the TCP_FASTOPEN socket
+	   option.
 
 	Default: 0
 
+	Note that the client & server side Fast Open flags (1 and 2
+	respectively) must be also enabled before the rest of flags can take
+	effect.
+
+	See include/net/tcp.h and the code for more details.
+
 tcp_syn_retries - INTEGER
 	Number of times initial SYNs for an active TCP connection attempt
 	will be retransmitted. Should not be higher than 255. Default value
-	is 5, which corresponds to ~180seconds.
+	is 6, which corresponds to 63seconds till the last restransmission
+	with the current initial RTO of 1second. With this the final timeout
+	for an active TCP connection attempt will happen after 127seconds.
 
 tcp_timestamps - BOOLEAN
 	Enable timestamps as defined in RFC1323.