Eric Dumazet 9a568de481 tcp: switch TCP TS option (RFC 7323) to 1ms clock ... TCP Timestamps option is defined in RFC 7323 Traditionally on linux, it has been tied to the internal 'jiffies' variable, because it had been a cheap and good enough generator. For TCP flows on the Internet, 1 ms resolution would be much better than 4ms or 10ms (HZ=250 or HZ=100 respectively) For TCP flows in the DC, Google has used usec resolution for more than two years with great success [1] Receive size autotuning (DRS) is indeed more precise and converges faster to optimal window size. This patch converts tp->tcp_mstamp to a plain u64 value storing a 1 usec TCP clock. This choice will allow us to upstream the 1 usec TS option as discussed in IETF 97. [1] https://www.ietf.org/proceedings/97/slides/slides-97-tcpm-tcp-options-for-low-latency-00.pdf Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-05-17 16:06:01 -04:00
..
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next	2017-05-01 10:47:53 -04:00
Kconfig	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next	2017-02-16 21:25:49 -05:00
Makefile	ipv4: fib: Move FIB notification code to a separate file	2017-03-10 09:45:09 -08:00
af_inet.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-05-02 16:40:27 -07:00
ah4.c	…
arp.c	neighbour: fix nlmsg_pid in notifications	2017-03-22 10:48:49 -07:00
cipso_ipv4.c	netlabel: out of bound access in cipso_v4_validate()	2017-02-04 19:44:22 -05:00
datagram.c	…
devinet.c	net: rtnetlink: plumb extended ack to doit function	2017-04-17 15:35:38 -04:00
esp4.c	net/esp4: Fix invalid esph pointer crash	2017-05-01 14:58:50 -04:00
esp4_offload.c	esp4/6: Fix GSO path for non-GSO SW-crypto packets	2017-04-19 07:48:57 +02:00
fib_frontend.c	net: fib: Decrease one unnecessary rt cache flush in fib_disable_ip	2017-04-27 16:33:30 -04:00
fib_lookup.h	…
fib_notifier.c	ipv4: fib: Remove redundant argument	2017-03-10 09:45:09 -08:00
fib_rules.c	ipv4: fib_rules: Dump FIB rules when registering FIB notifier	2017-03-16 10:18:34 -07:00
fib_semantics.c	net: ipv4: add support for ECMP hash policy choice	2017-03-21 15:27:19 -07:00
fib_trie.c	ipv4: fib: Remove redundant argument	2017-03-10 09:45:09 -08:00
fou.c	…
gre_demux.c	…
gre_offload.c	…
icmp.c	net: ipv4: add support for ECMP hash policy choice	2017-03-21 15:27:19 -07:00
igmp.c	igmp, mld: Fix memory leak in igmpv3/mld_del_delrec()	2017-02-09 16:43:45 -05:00
inet_connection_sock.c	dccp/tcp: do not inherit mc_list from parent	2017-05-09 15:17:49 -04:00
inet_diag.c	…
inet_fragment.c	…
inet_hashtables.c	treewide: use kv[mz]alloc* rather than opencoded variants	2017-05-08 17:15:13 -07:00
inet_timewait_sock.c	…
inetpeer.c	…
ip_forward.c	…
ip_fragment.c	inet: frag: release spinlock before calling icmp_send()	2017-03-22 15:40:45 -07:00
ip_gre.c	ip_tunnel: Allow policy-based routing through tunnels	2017-04-21 13:21:31 -04:00
ip_input.c	net: Add sysctl to toggle early demux for tcp and udp	2017-03-24 13:17:07 -07:00
ip_options.c	…
ip_output.c	udp: avoid ufo handling on IP payload compression packets	2017-03-09 18:28:42 -08:00
ip_sockglue.c	ipv4: get rid of ip_ra_lock	2017-04-30 22:44:04 -04:00
ip_tunnel.c	ip_tunnel: Allow policy-based routing through tunnels	2017-04-21 13:21:31 -04:00
ip_tunnel_core.c	netlink: pass extended ACK struct to parsing functions	2017-04-13 13:58:22 -04:00
ip_vti.c	vti: check nla_put_* return value	2017-05-08 15:10:31 -04:00
ipcomp.c	…
ipconfig.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-06 08:24:51 -07:00
ipip.c	ip_tunnel: Allow policy-based routing through tunnels	2017-04-21 13:21:31 -04:00
ipmr.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-20 10:35:33 -04:00
netfilter.c	netfilter: use skb_to_full_sk in ip_route_me_harder	2017-02-28 12:49:36 +01:00
ping.c	ping: implement proper locking	2017-03-24 20:50:28 -07:00
proc.c	net/tcp_fastopen: Add snmp counter for blackhole detection	2017-04-24 14:27:17 -04:00
protocol.c	net: Add sysctl to toggle early demux for tcp and udp	2017-03-24 13:17:07 -07:00
raw.c	ipv4, ipv6: ensure raw socket message is big enough to hold an IP header	2017-05-04 11:02:46 -04:00
raw_diag.c	…
route.c	Revert "ipv4: restore rt->fi for reference counting"	2017-05-08 22:35:32 -04:00
syncookies.c	tcp: switch TCP TS option (RFC 7323) to 1ms clock	2017-05-17 16:06:01 -04:00
sysctl_net_ipv4.c	net/tcp_fastopen: Disable active side TFO in certain scenarios	2017-04-24 14:27:17 -04:00
tcp.c	tcp: switch TCP TS option (RFC 7323) to 1ms clock	2017-05-17 16:06:01 -04:00
tcp_bbr.c	tcp: switch TCP TS option (RFC 7323) to 1ms clock	2017-05-17 16:06:01 -04:00
tcp_bic.c	tcp: bic, cubic: use tcp_jiffies32 instead of tcp_time_stamp	2017-05-17 16:06:01 -04:00
tcp_cdg.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>	2017-03-02 08:42:27 +01:00
tcp_cong.c	tcp: memset ca_priv data to 0 properly	2017-04-26 14:58:32 -04:00
tcp_cubic.c	tcp: bic, cubic: use tcp_jiffies32 instead of tcp_time_stamp	2017-05-17 16:06:01 -04:00
tcp_dctcp.c	…
tcp_diag.c	…
tcp_fastopen.c	net/tcp_fastopen: Add snmp counter for blackhole detection	2017-04-24 14:27:17 -04:00
tcp_highspeed.c	…
tcp_htcp.c	tcp: replace misc tcp_time_stamp to tcp_jiffies32	2017-05-17 16:06:01 -04:00
tcp_hybla.c	…
tcp_illinois.c	…
tcp_input.c	tcp: switch TCP TS option (RFC 7323) to 1ms clock	2017-05-17 16:06:01 -04:00
tcp_ipv4.c	tcp: switch TCP TS option (RFC 7323) to 1ms clock	2017-05-17 16:06:01 -04:00
tcp_lp.c	tcp: switch TCP TS option (RFC 7323) to 1ms clock	2017-05-17 16:06:01 -04:00
tcp_metrics.c	tcp: use tcp_jiffies32 to feed tp->snd_cwnd_stamp	2017-05-17 16:06:01 -04:00
tcp_minisocks.c	tcp: switch TCP TS option (RFC 7323) to 1ms clock	2017-05-17 16:06:01 -04:00
tcp_nv.c	…
tcp_offload.c	…
tcp_output.c	tcp: switch TCP TS option (RFC 7323) to 1ms clock	2017-05-17 16:06:01 -04:00
tcp_probe.c	tcp: Revert "tcp: tcp_probe: use spin_lock_bh()"	2017-02-21 13:26:03 -05:00
tcp_rate.c	tcp: switch TCP TS option (RFC 7323) to 1ms clock	2017-05-17 16:06:01 -04:00
tcp_recovery.c	tcp: switch TCP TS option (RFC 7323) to 1ms clock	2017-05-17 16:06:01 -04:00
tcp_scalable.c	…
tcp_timer.c	tcp: switch TCP TS option (RFC 7323) to 1ms clock	2017-05-17 16:06:01 -04:00
tcp_vegas.c	…
tcp_vegas.h	…
tcp_veno.c	…
tcp_westwood.c	tcp_westwood: use tcp_jiffies32 instead of tcp_time_stamp	2017-05-17 16:06:01 -04:00
tcp_yeah.c	…
tunnel4.c	…
udp.c	udp: keep the sk_receive_queue held when splicing	2017-05-16 15:41:30 -04:00
udp_diag.c	…
udp_impl.h	…
udp_offload.c	udp: disable inner UDP checksum offloads in IPsec case	2017-04-24 13:48:54 -04:00
udp_tunnel.c	…
udplite.c	…
xfrm4_input.c	esp: Add a software GRO codepath	2017-02-15 11:04:11 +01:00
xfrm4_mode_beet.c	…
xfrm4_mode_transport.c	xfrm: Add encapsulation header offsets while SKB is not encrypted	2017-04-14 10:07:39 +02:00
xfrm4_mode_tunnel.c	xfrm: Add encapsulation header offsets while SKB is not encrypted	2017-04-14 10:07:39 +02:00
xfrm4_output.c	xfrm: Add an IPsec hardware offloading API	2017-04-14 10:06:10 +02:00
xfrm4_policy.c	xfrm: policy: make policy backend const	2017-02-09 10:22:19 +01:00
xfrm4_protocol.c	xfrm: input: constify xfrm_input_afinfo	2017-02-09 10:22:17 +01:00
xfrm4_state.c	…
xfrm4_tunnel.c	…