user/sven/linux.git/include/uapi/linux/tcp_metrics.h, branch v4.8.5Linux Kernel
https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v4.8.52016-04-24T00:13:24Zlibnl: nla_put_msecs(): align on a 64-bit area2016-04-24T00:13:24ZNicolas Dichtelnicolas.dichtel@6wind.com2016-04-22T15:31:21Zurn:sha1:2175d87cc3561c02e605bc8ac81ee5d875a51b9e
nla_data() is now aligned on a 64-bit area.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
tcp: switch rtt estimations to usec resolution2014-02-26T22:08:40ZEric Dumazetedumazet@google.com2014-02-26T22:02:48Zurn:sha1:740b0f1841f6e39085b711d41db9ffb07198682b
Upcoming congestion controls for TCP require usec resolution for RTT
estimations. Millisecond resolution is simply not enough these days.
FQ/pacing in DC environments also require this change for finer control
and removal of bimodal behavior due to the current hack in
tcp_update_pacing_rate() for 'small rtt'
TCP_CONG_RTT_STAMP is no longer needed.
As Julian Anastasov pointed out, we need to keep user compatibility :
tcp_metrics used to export RTT and RTTVAR in msec resolution,
so we added RTT_US and RTTVAR_US. An iproute2 patch is needed
to use the new attributes if provided by the kernel.
In this example ss command displays a srtt of 32 usecs (10Gbit link)
lpk51:~# ./ss -i dst lpk52
Netid State Recv-Q Send-Q Local Address:Port Peer
Address:Port
tcp ESTAB 0 1 10.246.11.51:42959
10.246.11.52:64614
cubic wscale:6,6 rto:201 rtt:0.032/0.001 ato:40 mss:1448
cwnd:10 send
3620.0Mbps pacing_rate 7240.0Mbps unacked:1 rcv_rtt:993 rcv_space:29559
Updated iproute2 ip command displays :
lpk51:~# ./ip tcp_metrics | grep 10.246.11.52
10.246.11.52 age 561.914sec cwnd 10 rtt 274us rttvar 213us source
10.246.11.51
Old binary displays :
lpk51:~# ip tcp_metrics | grep 10.246.11.52
10.246.11.52 age 561.914sec cwnd 10 rtt 250us rttvar 125us source
10.246.11.51
With help from Julian Anastasov, Stephen Hemminger and Yuchung Cheng
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Larry Brakmo <brakmo@google.com>
Cc: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
tcp: metrics: New netlink attribute for src IP and dumped in netlink reply2014-01-10T22:38:18ZChristoph Paaschchristoph.paasch@uclouvain.be2014-01-08T15:05:57Zurn:sha1:8a59359cb80f448923a7bc9f555d477e74547d7a
This patch adds a new netlink attribute for the source-IP and appends it
to the netlink reply. Now, iproute2 can have access to the source-IP.
Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
UAPI: (Scripted) Disintegrate include/linux2012-10-13T09:46:48ZDavid Howellsdhowells@redhat.com2012-10-13T09:46:48Zurn:sha1:607ca46e97a1b6594b29647d98a32d545c24bdff
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>