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

Pull networking updates from David Miller:

 1) Add TX fast path in mac80211, from Johannes Berg.

 2) Add TSO/GRO support to ibmveth, from Thomas Falcon

 3) Move away from cached routes in ipv6, just like ipv4, from Martin
    KaFai Lau.

 4) Lots of new rhashtable tests, from Thomas Graf.

 5) Run ingress qdisc lockless, from Alexei Starovoitov.

 6) Allow servers to fetch TCP packet headers for SYN packets of new
    connections, for fingerprinting.  From Eric Dumazet.

 7) Add mode parameter to pktgen, for testing receive.  From Alexei
    Starovoitov.

 8) Cache access optimizations via simplifications of build_skb(), from
    Alexander Duyck.

 9) Move page frag allocator under mm/, also from Alexander.

10) Add xmit_more support to hv_netvsc, from KY Srinivasan.

11) Add a counter guard in case we try to perform endless reclassify
    loops in the packet scheduler.

12) Extern flow dissector to be programmable and use it in new "Flower"
    classifier.  From Jiri Pirko.

13) AF_PACKET fanout rollover fixes, performance improvements, and new
    statistics.  From Willem de Bruijn.

14) Add netdev driver for GENEVE tunnels, from John W Linville.

15) Add ingress netfilter hooks and filtering, from Pablo Neira Ayuso.

16) Fix handling of epoll edge triggers in TCP, from Eric Dumazet.

17) Add an ECN retry fallback for the initial TCP handshake, from Daniel
    Borkmann.

18) Add tail call support to BPF, from Alexei Starovoitov.

19) Add several pktgen helper scripts, from Jesper Dangaard Brouer.

20) Add zerocopy support to AF_UNIX, from Hannes Frederic Sowa.

21) Favor even port numbers for allocation to connect() requests, and
    odd port numbers for bind(0), in an effort to help avoid
    ip_local_port_range exhaustion.  From Eric Dumazet.

22) Add Cavium ThunderX driver, from Sunil Goutham.

23) Allow bpf programs to access skb_iif and dev->ifindex SKB metadata,
    from Alexei Starovoitov.

24) Add support for T6 chips in cxgb4vf driver, from Hariprasad Shenai.

25) Double TCP Small Queues default to 256K to accomodate situations
    like the XEN driver and wireless aggregation.  From Wei Liu.

26) Add more entropy inputs to flow dissector, from Tom Herbert.

27) Add CDG congestion control algorithm to TCP, from Kenneth Klette
    Jonassen.

28) Convert ipset over to RCU locking, from Jozsef Kadlecsik.

29) Track and act upon link status of ipv4 route nexthops, from Andy
    Gospodarek.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1670 commits)
  bridge: vlan: flush the dynamically learned entries on port vlan delete
  bridge: multicast: add a comment to br_port_state_selection about blocking state
  net: inet_diag: export IPV6_V6ONLY sockopt
  stmmac: troubleshoot unexpected bits in des0 & des1
  net: ipv4 sysctl option to ignore routes when nexthop link is down
  net: track link-status of ipv4 nexthops
  net: switchdev: ignore unsupported bridge flags
  net: Cavium: Fix MAC address setting in shutdown state
  drivers: net: xgene: fix for ACPI support without ACPI
  ip: report the original address of ICMP messages
  net/mlx5e: Prefetch skb data on RX
  net/mlx5e: Pop cq outside mlx5e_get_cqe
  net/mlx5e: Remove mlx5e_cq.sqrq back-pointer
  net/mlx5e: Remove extra spaces
  net/mlx5e: Avoid TX CQE generation if more xmit packets expected
  net/mlx5e: Avoid redundant dev_kfree_skb() upon NOP completion
  net/mlx5e: Remove re-assignment of wq type in mlx5e_enable_rq()
  net/mlx5e: Use skb_shinfo(skb)->gso_segs rather than counting them
  net/mlx5e: Static mapping of netdev priv resources to/from netdev TX queues
  net/mlx4_en: Use HW counters for rx/tx bytes/packets in PF device
  ...

1 files changed, 109 insertions, 41 deletions

diff --git a/Documentation/networking/pktgen.txt b/Documentation/networking/pktgen.txt
index 0344f1d45b37..f4be85e96005 100644
--- a/Documentation/networking/pktgen.txt
+++ b/Documentation/networking/pktgen.txt
@@ -1,6 +1,6 @@
 
 
-                  HOWTO for the linux packet generator 
+                  HOWTO for the linux packet generator
                   ------------------------------------
 
 Enable CONFIG_NET_PKTGEN to compile and build pktgen either in-kernel
@@ -50,17 +50,33 @@ For ixgbe use e.g. "30" resulting in approx 33K interrupts/sec (1/30*10^6):
  # ethtool -C ethX rx-usecs 30
 
 
-Viewing threads
-===============
-/proc/net/pktgen/kpktgend_0 
-Name: kpktgend_0  max_before_softirq: 10000
-Running: 
-Stopped: eth1 
-Result: OK: max_before_softirq=10000
+Kernel threads
+==============
+Pktgen creates a thread for each CPU with affinity to that CPU.
+Which is controlled through procfile /proc/net/pktgen/kpktgend_X.
+
+Example: /proc/net/pktgen/kpktgend_0
+
+ Running:
+ Stopped: eth4@0
+ Result: OK: add_device=eth4@0
+
+Most important are the devices assigned to the thread.
+
+The two basic thread commands are:
+ * add_device DEVICE@NAME -- adds a single device
+ * rem_device_all         -- remove all associated devices
+
+When adding a device to a thread, a corrosponding procfile is created
+which is used for configuring this device. Thus, device names need to
+be unique.
 
-Most important are the devices assigned to the thread.  Note that a
-device can only belong to one thread.
+To support adding the same device to multiple threads, which is useful
+with multi queue NICs, a the device naming scheme is extended with "@":
+ device@something
 
+The part after "@" can be anything, but it is custom to use the thread
+number.
 
 Viewing devices
 ===============
@@ -69,29 +85,32 @@ The Params section holds configured information.  The Current section
 holds running statistics.  The Result is printed after a run or after
 interruption.  Example:
 
-/proc/net/pktgen/eth1       
+/proc/net/pktgen/eth4@0
 
-Params: count 10000000  min_pkt_size: 60  max_pkt_size: 60
-     frags: 0  delay: 0  clone_skb: 1000000  ifname: eth1
+ Params: count 100000  min_pkt_size: 60  max_pkt_size: 60
+     frags: 0  delay: 0  clone_skb: 64  ifname: eth4@0
      flows: 0 flowlen: 0
-     dst_min: 10.10.11.2  dst_max: 
-     src_min:   src_max: 
-     src_mac: 00:00:00:00:00:00  dst_mac: 00:04:23:AC:FD:82
-     udp_src_min: 9  udp_src_max: 9  udp_dst_min: 9  udp_dst_max: 9
-     src_mac_count: 0  dst_mac_count: 0 
-     Flags: 
-Current:
-     pkts-sofar: 10000000  errors: 39664
-     started: 1103053986245187us  stopped: 1103053999346329us idle: 880401us
-     seq_num: 10000011  cur_dst_mac_offset: 0  cur_src_mac_offset: 0
-     cur_saddr: 0x10a0a0a  cur_daddr: 0x20b0a0a
-     cur_udp_dst: 9  cur_udp_src: 9
+     queue_map_min: 0  queue_map_max: 0
+     dst_min: 192.168.81.2  dst_max:
+     src_min:   src_max:
+     src_mac: 90:e2:ba:0a:56:b4 dst_mac: 00:1b:21:3c:9d:f8
+     udp_src_min: 9  udp_src_max: 109  udp_dst_min: 9  udp_dst_max: 9
+     src_mac_count: 0  dst_mac_count: 0
+     Flags: UDPSRC_RND  NO_TIMESTAMP  QUEUE_MAP_CPU
+ Current:
+     pkts-sofar: 100000  errors: 0
+     started: 623913381008us  stopped: 623913396439us idle: 25us
+     seq_num: 100001  cur_dst_mac_offset: 0  cur_src_mac_offset: 0
+     cur_saddr: 192.168.8.3  cur_daddr: 192.168.81.2
+     cur_udp_dst: 9  cur_udp_src: 42
+     cur_queue_map: 0
      flows: 0
-Result: OK: 13101142(c12220741+d880401) usec, 10000000 (60byte,0frags)
-  763292pps 390Mb/sec (390805504bps) errors: 39664
+ Result: OK: 15430(c15405+d25) usec, 100000 (60byte,0frags)
+  6480562pps 3110Mb/sec (3110669760bps) errors: 0
 
-Configuring threads and devices
-================================
+
+Configuring devices
+===================
 This is done via the /proc interface, and most easily done via pgset
 as defined in the sample scripts.
 
@@ -126,7 +145,7 @@ Examples:
                          To select queue 1 of a given device,
                          use queue_map_min=1 and queue_map_max=1
 
- pgset "src_mac_count 1" Sets the number of MACs we'll range through.  
+ pgset "src_mac_count 1" Sets the number of MACs we'll range through.
                          The 'minimum' MAC is what you set with srcmac.
 
  pgset "dst_mac_count 1" Sets the number of MACs we'll range through.
@@ -145,6 +164,7 @@ Examples:
                               UDPCSUM,
                               IPSEC # IPsec encapsulation (needs CONFIG_XFRM)
                               NODE_ALLOC # node specific memory allocation
+                              NO_TIMESTAMP # disable timestamping
 
  pgset spi SPI_VALUE     Set specific SA used to transform packet.
 
@@ -192,24 +212,43 @@ Examples:
  pgset "rate 300M"        set rate to 300 Mb/s
  pgset "ratep 1000000"    set rate to 1Mpps
 
+ pgset "xmit_mode netif_receive"  RX inject into stack netif_receive_skb()
+				  Works with "burst" but not with "clone_skb".
+				  Default xmit_mode is "start_xmit".
+
 Sample scripts
 ==============
 
-A collection of small tutorial scripts for pktgen is in the
-samples/pktgen directory:
+A collection of tutorial scripts and helpers for pktgen is in the
+samples/pktgen directory. The helper parameters.sh file support easy
+and consistant parameter parsing across the sample scripts.
+
+Usage example and help:
+ ./pktgen_sample01_simple.sh -i eth4 -m 00:1B:21:3C:9D:F8 -d 192.168.8.2
+
+Usage: ./pktgen_sample01_simple.sh [-vx] -i ethX
+  -i : ($DEV)       output interface/device (required)
+  -s : ($PKT_SIZE)  packet size
+  -d : ($DEST_IP)   destination IP
+  -m : ($DST_MAC)   destination MAC-addr
+  -t : ($THREADS)   threads to start
+  -c : ($SKB_CLONE) SKB clones send before alloc new SKB
+  -b : ($BURST)     HW level bursting of SKBs
+  -v : ($VERBOSE)   verbose
+  -x : ($DEBUG)     debug
+
+The global variables being set are also listed.  E.g. the required
+interface/device parameter "-i" sets variable $DEV.  Copy the
+pktgen_sampleXX scripts and modify them to fit your own needs.
+
+The old scripts:
 
-pktgen.conf-1-1                  # 1 CPU 1 dev 
 pktgen.conf-1-2                  # 1 CPU 2 dev
-pktgen.conf-2-1                  # 2 CPU's 1 dev 
-pktgen.conf-2-2                  # 2 CPU's 2 dev
 pktgen.conf-1-1-rdos             # 1 CPU 1 dev w. route DoS 
 pktgen.conf-1-1-ip6              # 1 CPU 1 dev ipv6
 pktgen.conf-1-1-ip6-rdos         # 1 CPU 1 dev ipv6  w. route DoS
 pktgen.conf-1-1-flows            # 1 CPU 1 dev multiple flows.
 
-Run in shell: ./pktgen.conf-X-Y
-This does all the setup including sending.
-
 
 Interrupt affinity
 ===================
@@ -217,6 +256,9 @@ Note that when adding devices to a specific CPU it is a good idea to
 also assign /proc/irq/XX/smp_affinity so that the TX interrupts are bound
 to the same CPU.  This reduces cache bouncing when freeing skbs.
 
+Plus using the device flag QUEUE_MAP_CPU, which maps the SKBs TX queue
+to the running threads CPU (directly from smp_processor_id()).
+
 Enable IPsec
 ============
 Default IPsec transformation with ESP encapsulation plus transport mode
@@ -237,18 +279,19 @@ Current commands and configuration options
 
 start
 stop
+reset
 
 ** Thread commands:
 
 add_device
 rem_device_all
-max_before_softirq
 
 
 ** Device commands:
 
 count
 clone_skb
+burst
 debug
 
 frags
@@ -257,10 +300,17 @@ delay
 src_mac_count
 dst_mac_count
 
-pkt_size 
+pkt_size
 min_pkt_size
 max_pkt_size
 
+queue_map_min
+queue_map_max
+skb_priority
+
+tos           (ipv4)
+traffic_class (ipv6)
+
 mpls
 
 udp_src_min
@@ -269,6 +319,8 @@ udp_src_max
 udp_dst_min
 udp_dst_max
 
+node
+
 flag
   IPSRC_RND
   IPDST_RND
@@ -287,6 +339,9 @@ flag
   UDPCSUM
   IPSEC
   NODE_ALLOC
+  NO_TIMESTAMP
+
+spi (ipsec)
 
 dst_min
 dst_max
@@ -299,8 +354,10 @@ src_mac
 
 clear_counters
 
-dst6
 src6
+dst6
+dst6_max
+dst6_min
 
 flows
 flowlen
@@ -308,6 +365,17 @@ flowlen
 rate
 ratep
 
+xmit_mode <start_xmit|netif_receive>
+
+vlan_cfi
+vlan_id
+vlan_p
+
+svlan_cfi
+svlan_id
+svlan_p
+
+
 References:
 ftp://robur.slu.se/pub/Linux/net-development/pktgen-testing/
 ftp://robur.slu.se/pub/Linux/net-development/pktgen-testing/examples/