Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Eric Dumazet 0604475119 tcp: add TCPMemoryPressuresChrono counter ... DRAM supply shortage and poor memory pressure tracking in TCP stack makes any change in SO_SNDBUF/SO_RCVBUF (or equivalent autotuning limits) and tcp_mem[] quite hazardous. TCPMemoryPressures SNMP counter is an indication of tcp_mem sysctl limits being hit, but only tracking number of transitions. If TCP stack behavior under stress was perfect : 1) It would maintain memory usage close to the limit. 2) Memory pressure state would be entered for short times. We certainly prefer 100 events lasting 10ms compared to one event lasting 200 seconds. This patch adds a new SNMP counter tracking cumulative duration of memory pressure events, given in ms units. $ cat /proc/sys/net/ipv4/tcp_mem 3088 4117 6176 $ grep TCP /proc/net/sockstat TCP: inuse 180 orphan 0 tw 2 alloc 234 mem 4140 $ nstat -n ; sleep 10 ; nstat |grep Pressure TcpExtTCPMemoryPressures 1700 TcpExtTCPMemoryPressuresChrono 5209 v2: Used EXPORT_SYMBOL_GPL() instead of EXPORT_SYMBOL() as David instructed. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-06-08 11:26:19 -04:00
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ila	net: add extack arg to lwtunnel build state	2017-05-30 11:55:32 -04:00
netfilter	sk_buff: remove support for csum_bad in sk_buff	2017-05-19 19:21:29 -04:00
addrconf.c	net: ipv6: Plumb extack through route add functions	2017-05-22 12:12:20 -04:00
addrconf_core.c
addrlabel.c	net: rtnetlink: plumb extended ack to doit function	2017-04-17 15:35:38 -04:00
af_inet6.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-26 22:39:08 -04:00
ah6.c	ipsec: check return value of skb_to_sgvec always	2017-06-04 23:01:47 -04:00
anycast.c
calipso.c	net/ipv6: Fix CALIPSO causing GPF with datagram support	2017-06-06 15:18:20 -04:00
datagram.c	net-timestamp: avoid use-after-free in ip_recv_error	2017-04-17 12:59:22 -04:00
esp6.c	ipsec: check return value of skb_to_sgvec always	2017-06-04 23:01:47 -04:00
esp6_offload.c	esp4/6: Fix GSO path for non-GSO SW-crypto packets	2017-04-19 07:48:57 +02:00
exthdrs.c	ipv6: Need to export ipv6_push_frag_opts for tunneling now.	2017-05-01 15:10:20 -04:00
exthdrs_core.c
exthdrs_offload.c
fib6_rules.c
fou6.c	fou: make local function static	2017-05-21 13:42:36 -04:00
icmp.c	net: for rate-limited ICMP replies save one atomic operation	2017-01-09 15:49:12 -05:00
inet6_connection_sock.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-01-28 10:33:06 -05:00
inet6_hashtables.c	inet: collapse ipv4/v6 rcv_saddr_equal functions into one	2017-01-18 13:04:28 -05:00
ip6_checksum.c
ip6_fib.c	net: ipv6: Add extack messages for route add failures	2017-05-22 12:12:20 -04:00
ip6_flowlabel.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
ip6_gre.c	ip6_tunnel, ip6_gre: fix setting of DSCP on encapsulated packets	2017-05-26 14:54:39 -04:00
ip6_icmp.c
ip6_input.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-20 10:35:33 -04:00
ip6_offload.c	ipv6: Fix leak in ipv6_gso_segment().	2017-06-04 21:41:10 -04:00
ip6_offload.h
ip6_output.c	ipv6: fix out of bound writes in __ip6_append_data()	2017-05-22 11:47:44 -04:00
ip6_tunnel.c	ip6_tunnel: fix traffic class routing for tunnels	2017-06-04 19:49:33 -04:00
ip6_udp_tunnel.c
ip6_vti.c	ip6_tunnel: Allow policy-based routing through tunnels	2017-04-21 13:21:30 -04:00
ip6mr.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-21 20:23:53 -07:00
ipcomp6.c
ipv6_sockglue.c	net: Allow IP_MULTICAST_IF to set index to L3 slave	2016-12-30 15:24:47 -05:00
Kconfig	ipv6: sr: select DST_CACHE by default	2017-03-27 16:05:06 -07:00
Makefile	esp: Add a software GRO codepath	2017-02-15 11:04:11 +01:00
mcast.c	ipv6: add support for NETDEV_RESEND_IGMP event	2017-03-28 22:02:21 -07:00
mcast_snoop.c
mip6.c	ktime: Get rid of ktime_equal()	2016-12-25 17:21:23 +01:00
ndisc.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-26 22:39:08 -04:00
netfilter.c
output_core.c	ipv6: Prevent overrun when parsing v6 header options	2017-05-17 14:55:59 -04:00
ping.c	net: ping: do not abuse udp_poll()	2017-06-04 22:56:55 -04:00
proc.c
protocol.c	net: Add sysctl to toggle early demux for tcp and udp	2017-03-24 13:17:07 -07:00
raw.c	net: ping: do not abuse udp_poll()	2017-06-04 22:56:55 -04:00
reassembly.c
route.c	net: add extack arg to lwtunnel build state	2017-05-30 11:55:32 -04:00
seg6.c	ipv6: drop unused variables in seg6_genl_dumphac	2017-05-21 13:42:36 -04:00
seg6_hmac.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-02-07 16:29:30 -05:00
seg6_iptunnel.c	net: add extack arg to lwtunnel build state	2017-05-30 11:55:32 -04:00
sit.c	Revert "sit: reload iphdr in ipip6_rcv"	2017-06-06 11:34:06 -04:00
syncookies.c	tcp: Namespaceify sysctl_tcp_timestamps	2017-06-08 10:53:29 -04:00
sysctl_net_ipv6.c
tcp_ipv6.c	tcp: add TCPMemoryPressuresChrono counter	2017-06-08 11:26:19 -04:00
tcpv6_offload.c
tunnel6.c
udp.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-05-18 16:11:32 -04:00
udp_impl.h	udp: make *udp*_queue_rcv_skb() functions static	2017-05-18 10:23:33 -04:00
udp_offload.c	ipv6: Check ip6_find_1stfragopt() return value properly.	2017-05-17 22:54:11 -04:00
udplite.c
xfrm6_input.c	esp: Add a software GRO codepath	2017-02-15 11:04:11 +01:00
xfrm6_mode_beet.c
xfrm6_mode_ro.c	ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt()	2017-06-02 13:57:27 -04:00
xfrm6_mode_transport.c	ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt()	2017-06-02 13:57:27 -04:00
xfrm6_mode_tunnel.c	xfrm: Add encapsulation header offsets while SKB is not encrypted	2017-04-14 10:07:39 +02:00
xfrm6_output.c	xfrm: Add an IPsec hardware offloading API	2017-04-14 10:06:10 +02:00
xfrm6_policy.c	xfrm: policy: make policy backend const	2017-02-09 10:22:19 +01:00
xfrm6_protocol.c	xfrm: input: constify xfrm_input_afinfo	2017-02-09 10:22:17 +01:00
xfrm6_state.c
xfrm6_tunnel.c