netdev-dummy: Count rx packets regardless of source

This alters the way rx packets are accounted for by
counting them when they are processed by netdev_dummy_rx_recv(),
which seems to be a common path used by all received packets.

Previously accounting was done earlier, in netdev_dummy_receive(),
however this does not appear to count packets that are received via
a socket.

This resolves packet counting errors reported by the following
OFtest tests:

	port_stats.MultiFlowStats
	port_stats.SingleFlowStats
	pktact.WildcardPriorityWithDelete
	pktact.WildcardPriority

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
ovs-dpctl-top: in_port field is now the default view

This facilitates adding filtering since limiting output based on the in_port
is a natural first step.

Script mode was not changed allowing output to be piped through grep to
filter content.

Signed-off-by: Mark Hamilton <mhamilton@nicira.com>
Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
ofproto: Re-use port numbers of ports that were deleted an hour ago.

We have a least recently used algorithm for assigning ofport values
to newly created ports. i.e., when we don't have any unused ofport
numbers, we use ofport numbers from the oldest deleted port.
What this means is that after using ~65000 previously unused ofport
numbers, we will have to go through all of the possible ports
to see which one was least recently used. This will eventually
slow down ofport allocation.

With this commit, any port that was deleted more than an hour ago is
considered never to have been used. So it's ofport number becomes
free to be used.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
oftest: Update default controller port number to match recent OFTest.

Also, document how to work around it if you use an older OFTest.

Reported-by: Simon Horman <horms@verge.net.au>
Reported-by: Lori Jakab <lojakab@cisco.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
datapath: fix vport-netdev unregister

The combination of two commits:
commit 8e4e1713e4
("openvswitch: Simplify datapath locking.")
commit 2537b4dd0a
("openvswitch:: link upper device for port devices")

introduced a bug where upper_dev wasn't unlinked upon
netdev_unregister notification

The following steps:

  modprobe openvswitch
  ovs-dpctl add-dp test
  ip tuntap add dev tap1 mode tap
  ovs-dpctl add-if test tap1
  ip tuntap del dev tap1 mode tap

are causing multiple warnings:

[   62.747557] gre: GRE over IPv4 demultiplexor driver
[   62.749579] openvswitch: Open vSwitch switching datapath
[   62.755087] device test entered promiscuous mode
[   62.765911] device tap1 entered promiscuous mode
[   62.766033] IPv6: ADDRCONF(NETDEV_UP): tap1: link is not ready
[   62.769017] ------------[ cut here ]------------
[   62.769022] WARNING: CPU: 1 PID: 3267 at net/core/dev.c:5501 rollback_registered_many+0x20f/0x240()
[   62.769023] Modules linked in: openvswitch gre vxlan ip_tunnel libcrc32c ip6table_filter ip6_tables ebtable_nat ebtables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xt_CHECKSUM iptable_mangle ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp llc vhost_net macvtap macvlan vhost kvm_intel kvm dm_crypt iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi hid_generic mxm_wmi eeepc_wmi asus_wmi sparse_keymap dm_multipath psmouse serio_raw usbhid hid parport_pc ppdev firewire_ohci lpc_ich firewire_core e1000e crc_itu_t binfmt_misc igb dca ptp pps_core mac_hid wmi lp parport i2o_config i2o_block video
[   62.769051] CPU: 1 PID: 3267 Comm: ip Not tainted 3.12.0-rc3+ #60
[   62.769052] Hardware name: System manufacturer System Product Name/P8Z77 WS, BIOS 3007 07/26/2012
[   62.769053]  0000000000000009 ffff8807f25cbd28 ffffffff8175e575 0000000000000006
[   62.769055]  0000000000000000 ffff8807f25cbd68 ffffffff8105314c ffff8807f25cbd58
[   62.769057]  ffff8807f2634000 ffff8807f25cbdc8 ffff8807f25cbd88 ffff8807f25cbdc8
[   62.769059] Call Trace:
[   62.769062]  [<ffffffff8175e575>] dump_stack+0x55/0x76
[   62.769065]  [<ffffffff8105314c>] warn_slowpath_common+0x8c/0xc0
[   62.769067]  [<ffffffff8105319a>] warn_slowpath_null+0x1a/0x20
[   62.769069]  [<ffffffff8162a04f>] rollback_registered_many+0x20f/0x240
[   62.769071]  [<ffffffff8162a101>] rollback_registered+0x31/0x40
[   62.769073]  [<ffffffff8162a488>] unregister_netdevice_queue+0x58/0x90
[   62.769075]  [<ffffffff8154f900>] __tun_detach+0x140/0x340
[   62.769077]  [<ffffffff8154fb36>] tun_chr_close+0x36/0x60
[   62.769080]  [<ffffffff811bddaf>] __fput+0xff/0x260
[   62.769082]  [<ffffffff811bdf5e>] ____fput+0xe/0x10
[   62.769084]  [<ffffffff8107b515>] task_work_run+0xb5/0xe0
[   62.769087]  [<ffffffff810029b9>] do_notify_resume+0x59/0x80
[   62.769089]  [<ffffffff813a41fe>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[   62.769091]  [<ffffffff81770f5a>] int_signal+0x12/0x17
[   62.769093] ---[ end trace 838756c62e156ffb ]---
[   62.769481] ------------[ cut here ]------------
[   62.769485] WARNING: CPU: 1 PID: 92 at fs/sysfs/inode.c:325 sysfs_hash_and_remove+0xa9/0xb0()
[   62.769486] sysfs: can not remove 'master', no directory
[   62.769486] Modules linked in: openvswitch gre vxlan ip_tunnel libcrc32c ip6table_filter ip6_tables ebtable_nat ebtables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xt_CHECKSUM iptable_mangle ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp llc vhost_net macvtap macvlan vhost kvm_intel kvm dm_crypt iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi hid_generic mxm_wmi eeepc_wmi asus_wmi sparse_keymap dm_multipath psmouse serio_raw usbhid hid parport_pc ppdev firewire_ohci lpc_ich firewire_core e1000e crc_itu_t binfmt_misc igb dca ptp pps_core mac_hid wmi lp parport i2o_config i2o_block video
[   62.769514] CPU: 1 PID: 92 Comm: kworker/1:2 Tainted: G        W    3.12.0-rc3+ #60
[   62.769515] Hardware name: System manufacturer System Product Name/P8Z77 WS, BIOS 3007 07/26/2012
[   62.769518] Workqueue: events ovs_dp_notify_wq [openvswitch]
[   62.769519]  0000000000000009 ffff880807ad3ac8 ffffffff8175e575 0000000000000006
[   62.769521]  ffff880807ad3b18 ffff880807ad3b08 ffffffff8105314c ffff880807ad3b28
[   62.769523]  0000000000000000 ffffffff81a87a1f ffff8807f2634000 ffff880037038500
[   62.769525] Call Trace:
[   62.769528]  [<ffffffff8175e575>] dump_stack+0x55/0x76
[   62.769529]  [<ffffffff8105314c>] warn_slowpath_common+0x8c/0xc0
[   62.769531]  [<ffffffff81053236>] warn_slowpath_fmt+0x46/0x50
[   62.769533]  [<ffffffff8123e7e9>] sysfs_hash_and_remove+0xa9/0xb0
[   62.769535]  [<ffffffff81240e96>] sysfs_remove_link+0x26/0x30
[   62.769538]  [<ffffffff81631ef7>] __netdev_adjacent_dev_remove+0xf7/0x150
[   62.769540]  [<ffffffff81632037>] __netdev_adjacent_dev_unlink_lists+0x27/0x50
[   62.769542]  [<ffffffff8163213a>] __netdev_adjacent_dev_unlink_neighbour+0x3a/0x50
[   62.769544]  [<ffffffff8163218d>] netdev_upper_dev_unlink+0x3d/0x140
[   62.769548]  [<ffffffffa033c2db>] netdev_destroy+0x4b/0x80 [openvswitch]
[   62.769550]  [<ffffffffa033b696>] ovs_vport_del+0x46/0x60 [openvswitch]
[   62.769552]  [<ffffffffa0335314>] ovs_dp_detach_port+0x44/0x60 [openvswitch]
[   62.769555]  [<ffffffffa0336574>] ovs_dp_notify_wq+0xb4/0x150 [openvswitch]
[   62.769557]  [<ffffffff81075c28>] process_one_work+0x1d8/0x6a0
[   62.769559]  [<ffffffff81075bc8>] ? process_one_work+0x178/0x6a0
[   62.769562]  [<ffffffff8107659b>] worker_thread+0x11b/0x370
[   62.769564]  [<ffffffff81076480>] ? rescuer_thread+0x350/0x350
[   62.769566]  [<ffffffff8107f44a>] kthread+0xea/0xf0
[   62.769568]  [<ffffffff8107f360>] ? flush_kthread_worker+0x150/0x150
[   62.769570]  [<ffffffff81770bac>] ret_from_fork+0x7c/0xb0
[   62.769572]  [<ffffffff8107f360>] ? flush_kthread_worker+0x150/0x150
[   62.769573] ---[ end trace 838756c62e156ffc ]---
[   62.769574] ------------[ cut here ]------------
[   62.769576] WARNING: CPU: 1 PID: 92 at fs/sysfs/inode.c:325 sysfs_hash_and_remove+0xa9/0xb0()
[   62.769577] sysfs: can not remove 'upper_test', no directory
[   62.769577] Modules linked in: openvswitch gre vxlan ip_tunnel libcrc32c ip6table_filter ip6_tables ebtable_nat ebtables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xt_CHECKSUM iptable_mangle ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp llc vhost_net macvtap macvlan vhost kvm_intel kvm dm_crypt iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi hid_generic mxm_wmi eeepc_wmi asus_wmi sparse_keymap dm_multipath psmouse serio_raw usbhid hid parport_pc ppdev firewire_ohci lpc_ich firewire_core e1000e crc_itu_t binfmt_misc igb dca ptp pps_core mac_hid wmi lp parport i2o_config i2o_block video
[   62.769603] CPU: 1 PID: 92 Comm: kworker/1:2 Tainted: G        W    3.12.0-rc3+ #60
[   62.769604] Hardware name: System manufacturer System Product Name/P8Z77 WS, BIOS 3007 07/26/2012
[   62.769606] Workqueue: events ovs_dp_notify_wq [openvswitch]
[   62.769607]  0000000000000009 ffff880807ad3ac8 ffffffff8175e575 0000000000000006
[   62.769609]  ffff880807ad3b18 ffff880807ad3b08 ffffffff8105314c ffff880807ad3b58
[   62.769611]  0000000000000000 ffff880807ad3bd9 ffff8807f2634000 ffff880037038500
[   62.769613] Call Trace:
[   62.769615]  [<ffffffff8175e575>] dump_stack+0x55/0x76
[   62.769617]  [<ffffffff8105314c>] warn_slowpath_common+0x8c/0xc0
[   62.769619]  [<ffffffff81053236>] warn_slowpath_fmt+0x46/0x50
[   62.769621]  [<ffffffff8123e7e9>] sysfs_hash_and_remove+0xa9/0xb0
[   62.769622]  [<ffffffff81240e96>] sysfs_remove_link+0x26/0x30
[   62.769624]  [<ffffffff81631f22>] __netdev_adjacent_dev_remove+0x122/0x150
[   62.769627]  [<ffffffff81632037>] __netdev_adjacent_dev_unlink_lists+0x27/0x50
[   62.769629]  [<ffffffff8163213a>] __netdev_adjacent_dev_unlink_neighbour+0x3a/0x50
[   62.769631]  [<ffffffff8163218d>] netdev_upper_dev_unlink+0x3d/0x140
[   62.769633]  [<ffffffffa033c2db>] netdev_destroy+0x4b/0x80 [openvswitch]
[   62.769636]  [<ffffffffa033b696>] ovs_vport_del+0x46/0x60 [openvswitch]
[   62.769638]  [<ffffffffa0335314>] ovs_dp_detach_port+0x44/0x60 [openvswitch]
[   62.769640]  [<ffffffffa0336574>] ovs_dp_notify_wq+0xb4/0x150 [openvswitch]
[   62.769642]  [<ffffffff81075c28>] process_one_work+0x1d8/0x6a0
[   62.769644]  [<ffffffff81075bc8>] ? process_one_work+0x178/0x6a0
[   62.769646]  [<ffffffff8107659b>] worker_thread+0x11b/0x370
[   62.769648]  [<ffffffff81076480>] ? rescuer_thread+0x350/0x350
[   62.769650]  [<ffffffff8107f44a>] kthread+0xea/0xf0
[   62.769652]  [<ffffffff8107f360>] ? flush_kthread_worker+0x150/0x150
[   62.769654]  [<ffffffff81770bac>] ret_from_fork+0x7c/0xb0
[   62.769656]  [<ffffffff8107f360>] ? flush_kthread_worker+0x150/0x150
[   62.769657] ---[ end trace 838756c62e156ffd ]---
[   62.769724] device tap1 left promiscuous mode

This patch also affects moving devices between net namespaces.

OVS used to ignore netns move notifications which caused problems.
Like:
  ovs-dpctl add-if test tap1
  ip link set tap1 netns 3512
and then removing tap1 inside the namespace will cause hang on missing dev_put.

With this patch OVS will detach dev upon receiving netns move event.

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
tests: Relax the requirement of bfd tests on timing.

Before this commit, the bfd related tests check the change of
states with very strict timing requirement.  This makes the tests
fragile, especially when ofproto-dpif-monitor module is moved to
its own thread.

Thusly, this commit relaxes the requirement on timing, making the
tests more reliable.

Signed-off-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Ethan Jackson <ethan@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
ofproto-dpif-monitor: Run ofproto-dpif-monitor in a thread.

This commit moves the ofproto-dpif-monitor module into a
dedicated thread.  This helps eliminate the burden of main
thread having to wake up very frequently for periodic
interface monitoring (bfd, cfm).  Thusly, this commit greatly
increases the number of bfd/cfm sessions that can be supported
by ovs.

Signed-off-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Ethan Jackson <ethan@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
heap: Change type of "priority" in "struct heap".

This commit changes the variable type of priority in "struct heap"
from uint32_t to uint64_t.

Signed-off-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Ethan Jackson <ethan@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
bfd: Add bfd_wake_time() function.

This commit adds a new function "bfd_wake_time()" that returns the
next wakeup time associated with the "struct bfd".

Signed-off-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Ethan Jackson <ethan@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
cfm: Add cfm_wake_time() function.

This commit adds a new function "cfm_wake_time()" that returns the
next wakeup time associated with the "struct cfm".

Signed-off-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Ethan Jackson <ethan@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
ofproto-dpif-monitor: Use heap to order the mport wakeup time.

Before this commit, each time ofproto-dpif-monitor thread wakes up,
all monitored ports will be iterated over.  This adds a huge overhead
to the monitor thread.  This commit uses a heap to order the wakeup
time of monitored ports.  So each time the monitor thread is waken up,
it will only iterate those monitored ports that have timed out.

This commit greatly increases the number of monitored interfaces
openvswitch could support.

Signed-off-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Ethan Jackson <ethan@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>