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linux/net/ipv4
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Francis Yan 0f87230d1a tcp: instrument how long TCP is busy sending 
This patch measures TCP busy time, which is defined as the period
of time when sender has data (or FIN) to send. The time starts when
data is buffered and stops when the write queue is flushed by ACKs
or error events.

Note the busy time does not include SYN time, unless data is
included in SYN (i.e. Fast Open). It does include FIN time even
if the FIN carries no payload. Excluding pure FIN is possible but
would incur one additional test in the fast path, which may not
be worth it.

Signed-off-by: Francis Yan <francisyyan@gmail.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 10:04:24 -05:00
..
netfilter
netns: make struct pernet_operations::id unsigned int
2016-11-18 10:59:15 -05:00
af_inet.c
inet: fix sleeping inside inet_wait_for_connect()
2016-11-03 15:18:07 -04:00
ah4.c
ah4: Fix error return in ah_input().
2015-08-25 13:38:50 -07:00
arp.c
net: rename NET_{ADD|INC}_STATS_BH()
2016-04-27 22:48:24 -04:00
cipso_ipv4.c
Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/selinux into next
2016-07-07 10:15:34 +10:00
datagram.c
net: Set sk_txhash from a random number
2015-07-29 22:44:04 -07:00
devinet.c
netconf: add a notif when settings are created
2016-09-01 15:18:08 -07:00
esp4.c
esp: Fix ESN generation under UDP encapsulation
2016-06-23 11:52:00 -04:00
fib_frontend.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-11-22 13:27:16 -05:00
fib_lookup.h
ipv4: consider TOS in fib_select_default
2015-07-24 22:46:11 -07:00
fib_rules.c
switchdev: remove FIB offload infrastructure
2016-09-28 04:48:00 -04:00
fib_semantics.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-09-12 15:52:44 -07:00
fib_trie.c
ipv4: Fix memory leak in exception case for splitting tries
2016-11-16 13:24:50 -05:00
fou.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-10-30 12:42:58 -04:00
gre_demux.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-06-30 05:03:36 -04:00
gre_offload.c
net: add recursion limit to GRO
2016-10-20 14:32:22 -04:00
icmp.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-11-15 10:54:36 -05:00
igmp.c
igmp: do not remove igmp souce list info when set link down
2016-11-15 19:51:16 -05:00
inet_connection_sock.c
net: inet: Support UID-based routing in IP protocols.
2016-11-04 14:45:23 -04:00
inet_diag.c
tcp: no longer hold ehash lock while calling tcp_get_info()
2016-11-09 13:02:27 -05:00
inet_fragment.c
net: disable fragment reassembly if high_thresh is zero
2016-06-05 22:56:42 -04:00
inet_hashtables.c
net: Require exact match for TCP socket lookups if dif is l3mdev
2016-10-17 10:17:05 -04:00
inet_timewait_sock.c
timers, net/ipv4/inet: Initialize connection request timers as pinned
2016-07-07 10:35:06 +02:00
inetpeer.c
net: Add helper function to compare inetpeer addresses
2015-08-28 13:32:36 -07:00
ip_forward.c
ipv4: allow local fragmentation in ip_finish_output_gso()
2016-11-03 16:10:26 -04:00
ip_fragment.c
net: rename IP_INC_STATS_BH()
2016-04-27 22:48:23 -04:00
ip_gre.c
netns: make struct pernet_operations::id unsigned int
2016-11-18 10:59:15 -05:00
ip_input.c
net: VRF: Pass original iif to ip_route_input()
2016-09-16 04:24:07 -04:00
ip_options.c
net: ipv4: Convert IP network timestamps to be y2038 safe
2016-03-01 17:18:44 -05:00
ip_output.c
net: ipv4, ipv6: run cgroup eBPF egress programs
2016-11-25 16:26:04 -05:00
ip_sockglue.c
net/sock: add an explicit sk argument for ip_cmsg_recv_offset()
2016-11-07 13:24:41 -05:00
ip_tunnel_core.c
ipv4: allow local fragmentation in ip_finish_output_gso()
2016-11-03 16:10:26 -04:00
ip_tunnel.c
netns: make struct pernet_operations::id unsigned int
2016-11-18 10:59:15 -05:00
ip_vti.c
netns: make struct pernet_operations::id unsigned int
2016-11-18 10:59:15 -05:00
ipcomp.c
ipv4: coding style: comparison for equality with NULL
2015-04-03 12:11:15 -04:00
ipconfig.c
net: ipconfig: Fix NULL pointer dereference on RARP/BOOTP/DHCP timeout
2016-08-22 21:04:41 -07:00
ipip.c
netns: make struct pernet_operations::id unsigned int
2016-11-18 10:59:15 -05:00
ipmr.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-11-15 10:54:36 -05:00
Kconfig
net: ip, diag -- Add diag interface for raw sockets
2016-10-23 19:35:24 -04:00
Makefile
net: ip, diag -- Add diag interface for raw sockets
2016-10-23 19:35:24 -04:00
netfilter.c
ipv4: Pass struct net into ip_route_me_harder
2015-09-29 20:21:32 +02:00
ping.c
net: inet: Support UID-based routing in IP protocols.
2016-11-04 14:45:23 -04:00
proc.c
net: Suppress the "Comparison to NULL could be written" warnings
2016-09-30 01:50:45 -04:00
protocol.c
…
raw_diag.c
net: ip, raw_diag -- Use jump for exiting from nested loop
2016-11-03 15:25:26 -04:00
raw.c
net: Update raw socket bind to consider l3 domain
2016-11-07 13:14:34 -05:00
route.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-11-15 10:54:36 -05:00
syncookies.c
net: inet: Support UID-based routing in IP protocols.
2016-11-04 14:45:23 -04:00
sysctl_net_ipv4.c
ipv4: use the right lock for ping_group_range
2016-10-22 16:23:12 -04:00
tcp_bbr.c
tcp_bbr: add a state transition diagram and accompanying comment
2016-10-29 17:12:43 -04:00
tcp_bic.c
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_cdg.c
tcp: cdg: rename struct minmax in tcp_cdg.c to avoid a naming conflict
2016-09-21 00:22:59 -04:00
tcp_cong.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-11-22 13:27:16 -05:00
tcp_cubic.c
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_dctcp.c
tcp: make undo_cwnd mandatory for congestion modules
2016-11-21 13:20:17 -05:00
tcp_diag.c
net: diag: Fix refcnt leak in error path destroying socket
2016-08-23 23:11:36 -07:00
tcp_fastopen.c
tcp: fastopen: avoid negative sk_forward_alloc
2016-09-08 16:08:10 -07:00
tcp_highspeed.c
tcp: add cwnd_undo functions to various tcp cc algorithms
2016-11-21 13:20:17 -05:00
tcp_htcp.c
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_hybla.c
tcp: make undo_cwnd mandatory for congestion modules
2016-11-21 13:20:17 -05:00
tcp_illinois.c
tcp: add cwnd_undo functions to various tcp cc algorithms
2016-11-21 13:20:17 -05:00
tcp_input.c
tcp: instrument how long TCP is busy sending
2016-11-30 10:04:24 -05:00
tcp_ipv4.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-11-15 10:54:36 -05:00
tcp_lp.c
tcp: make undo_cwnd mandatory for congestion modules
2016-11-21 13:20:17 -05:00
tcp_metrics.c
genetlink: mark families as __ro_after_init
2016-10-27 16:16:09 -04:00
tcp_minisocks.c
tcp: track application-limited rate samples
2016-09-21 00:23:00 -04:00
tcp_nv.c
tcp: add NV congestion control
2016-06-10 23:07:49 -07:00
tcp_offload.c
gso: Support partial splitting at the frag_list pointer
2016-09-19 20:59:34 -04:00
tcp_output.c
tcp: instrument how long TCP is busy sending
2016-11-30 10:04:24 -05:00
tcp_probe.c
net: ipv4: tcp_probe: Replace timespec with timespec64
2016-03-01 17:18:44 -05:00
tcp_rate.c
tcp: export data delivery rate
2016-09-21 00:23:00 -04:00
tcp_recovery.c
tcp: do not assume TCP code is non preemptible
2016-05-02 17:02:25 -04:00
tcp_scalable.c
tcp: add cwnd_undo functions to various tcp cc algorithms
2016-11-21 13:20:17 -05:00
tcp_timer.c
tcp: Change txhash on every SYN and RTO retransmit
2016-09-28 07:52:34 -04:00
tcp_vegas.c
tcp: make undo_cwnd mandatory for congestion modules
2016-11-21 13:20:17 -05:00
tcp_vegas.h
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_veno.c
tcp: add cwnd_undo functions to various tcp cc algorithms
2016-11-21 13:20:17 -05:00
tcp_westwood.c
tcp: make undo_cwnd mandatory for congestion modules
2016-11-21 13:20:17 -05:00
tcp_yeah.c
tcp: add cwnd_undo functions to various tcp cc algorithms
2016-11-21 13:20:17 -05:00
tcp.c
tcp: allow to enable the repair mode for non-listening sockets
2016-11-15 22:28:50 -05:00
tunnel4.c
tunnels: correct conditional build of MPLS and IPv6
2016-07-11 13:27:06 -07:00
udp_diag.c
net: inet: diag: expose the socket mark to privileged processes.
2016-09-08 16:13:09 -07:00
udp_impl.h
udplite: call proper backlog handlers
2016-11-24 15:32:14 -05:00
udp_offload.c
net: add recursion limit to GRO
2016-10-20 14:32:22 -04:00
udp_tunnel.c
net: Remove deprecated tunnel specific UDP offload functions
2016-06-17 20:23:32 -07:00
udp.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-11-26 23:42:21 -05:00
udplite.c
udplite: call proper backlog handlers
2016-11-24 15:32:14 -05:00
xfrm4_input.c
netfilter: Pass net into okfn
2015-09-17 17:18:37 -07:00
xfrm4_mode_beet.c
…
xfrm4_mode_transport.c
…
xfrm4_mode_tunnel.c
ipv4: hash net ptr into fragmentation bucket selection
2015-03-25 14:07:04 -04:00
xfrm4_output.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2015-10-24 06:54:12 -07:00
xfrm4_policy.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-09-12 15:52:44 -07:00
xfrm4_protocol.c
…
xfrm4_state.c
…
xfrm4_tunnel.c
…