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linux/include/net
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Yousuk Seung d4761754b4 tcp: invalidate rate samples during SACK reneging 
Mark tcp_sock during a SACK reneging event and invalidate rate samples
while marked. Such rate samples may overestimate bw by including packets
that were SACKed before reneging.

< ack 6001 win 10000 sack 7001:38001
< ack 7001 win 0 sack 8001:38001 // Reneg detected
> seq 7001:8001 // RTO, SACK cleared.
< ack 38001 win 10000

In above example the rate sample taken after the last ack will count
7001-38001 as delivered while the actual delivery rate likely could
be much lower i.e. 7001-8001.

This patch adds a new field tcp_sock.sack_reneg and marks it when we
declare SACK reneging and entering TCP_CA_Loss, and unmarks it after
the last rate sample was taken before moving back to TCP_CA_Open. This
patch also invalidates rate samples taken while tcp_sock.is_sack_reneg
is set.

Fixes: b9f64820fb ("tcp: track data delivery rate for a TCP connection")
Signed-off-by: Yousuk Seung <ysseung@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Priyaranjan Jha <priyarjha@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-08 10:07:02 -05:00
..
9p 9p: Implement show_options 2017-07-11 06:08:58 -04:00
bluetooth Bluetooth: Use bt_dev_err and bt_dev_info when possible 2017-10-30 12:25:45 +02:00
caif
iucv License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
netfilter Modules updates for v4.15 2017-11-15 13:46:33 -08:00
netns tcp: Namespace-ify sysctl_tcp_default_congestion_control 2017-11-15 14:09:52 +09:00
nfc NFC: Add nfc_dbg() macro 2017-04-05 10:15:20 +02:00
phonet net: phonet: mark phonet_protocol as const 2017-10-07 23:15:08 +01:00
sctp sctp: abandon the whole msg if one part of a fragmented message is abandoned 2017-12-01 15:06:24 -05:00
tc_act act_sample: get rid of tcf_sample_cleanup_rcu() 2017-11-30 10:19:17 -05:00
6lowpan.h 6lowpan: Fix IID format for Bluetooth 2017-04-12 22:02:36 +02:00
act_api.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-10 10:00:18 +09:00
addrconf.h ipv6: remove IN6_ADDR_HSIZE from addrconf.h 2017-11-05 09:17:27 +09:00
af_ieee802154.h
af_rxrpc.h rxrpc: Provide functions for allowing cleaner handling of signals 2017-10-18 11:42:48 +01:00
af_unix.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
af_vsock.h VSOCK: use TCP state constants for sk_state 2017-10-05 18:44:17 -07:00
ah.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
arp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atmclip.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ax25.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ax88796.h
bond_3ad.h
bond_alb.h
bond_options.h bonding: Prevent duplicate userspace notification 2017-05-27 18:51:41 -04:00
bonding.h bonding: remove rtmsg_ifinfo called after bond_lower_state_changed 2017-10-25 10:54:39 +09:00
busy_poll.h net: fix compilation when busy poll is not enabled 2017-08-11 14:59:24 -07:00
calipso.h net, calipso: convert calipso_doi.refcount from atomic_t to refcount_t 2017-07-04 22:35:16 +01:00
cfg80211-wext.h
cfg80211.h cfg80211/nl80211: add a port authorized event 2017-10-02 14:08:27 +02:00
cfg802154.h
checksum.h
cipso_ipv4.h net, ipv4: convert cipso_v4_doi.refcount from atomic_t to refcount_t 2017-07-04 01:29:04 -07:00
cls_cgroup.h
codel_impl.h
codel_qdisc.h
codel.h
compat.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
datalink.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dcbevent.h
dcbnl.h
devlink.h devlink: Add IPv6 header for dpipe 2017-08-31 14:42:19 -07:00
dn_dev.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dn_fib.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dn_neigh.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dn_nsp.h net/decnet: Convert timers to use timer_setup() 2017-10-18 12:39:36 +01:00
dn_route.h
dn.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
dsa.h net: dsa: Support prepended Broadcom tag 2017-11-13 10:34:54 +09:00
dsfield.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dst_cache.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dst_metadata.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
dst_ops.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dst.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
erspan.h gre: introduce native tunnel support for ERSPAN 2017-08-22 14:29:30 -07:00
esp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ethoc.h
fib_notifier.h net: Add extack to fib_notifier_info 2017-11-01 11:50:43 +09:00
fib_rules.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
firewire.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
flow_dissector.h tipc: improve link resiliency when rps is activated 2017-11-11 15:36:05 +09:00
flow.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fou.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fq_impl.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-10-30 21:09:24 +09:00
fq.h fq: support filtering a given tin 2017-10-11 09:49:34 +02:00
garp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gen_stats.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
genetlink.h genetlink: fix genlmsg_nlhdr() 2017-11-16 10:49:00 +09:00
geneve.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gre.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gro_cells.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gtp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gue.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hwbm.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
icmp.h
ieee80211_radiotap.h
ieee802154_netdev.h
if_inet6.h net, ipv6: convert ifacaddr6.aca_refcnt from atomic_t to refcount_t 2017-07-04 01:29:04 -07:00
ife.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ila.h
inet6_connection_sock.h
inet6_hashtables.h net: ipv6: add second dif to inet6 socket lookups 2017-08-07 11:39:22 -07:00
inet_common.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
inet_connection_sock.h inet/connection_sock: Convert timers to use timer_setup() 2017-10-18 12:39:55 +01:00
inet_ecn.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
inet_frag.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
inet_hashtables.h net: ipv4: add second dif to inet socket lookups 2017-08-07 11:39:21 -07:00
inet_sock.h Merge branch 'akpm' (patches from Andrew) 2017-11-15 19:42:40 -08:00
inet_timewait_sock.h kmemcheck: remove annotations 2017-11-15 18:21:04 -08:00
inetpeer.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ip6_checksum.h
ip6_fib.h ipv6: take care of rt6_stats 2017-10-07 21:22:58 +01:00
ip6_route.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
ip6_tunnel.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ip_fib.h net: ipv4: remove fib_weight 2017-09-29 06:19:32 +01:00
ip_tunnels.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
ip_vs.h Merge branch 'linus' into locking/core, to resolve conflicts 2017-11-07 10:32:44 +01:00
ip.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-08-21 17:06:42 -07:00
ipcomp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ipconfig.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ipv6.h net: accept UFO datagrams from tuntap and packet 2017-11-24 01:37:35 +09:00
ipx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iw_handler.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kcm.h
l3mdev.h
lapb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
lib80211.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
llc_c_ac.h net: LLC: Convert timers to use timer_setup() 2017-10-25 12:06:25 +09:00
llc_c_ev.h
llc_c_st.h
llc_conn.h
llc_if.h
llc_pdu.h
llc_s_ac.h
llc_s_ev.h
llc_s_st.h
llc_sap.h
llc.h net, llc: convert llc_sap.refcnt from atomic_t to refcount_t 2017-07-04 22:35:15 +01:00
lwtunnel.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mac80211.h mac80211: use QoS NDP for AP probing 2017-11-27 11:23:20 +01:00
mac802154.h
mip6.h
mld.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mpls_iptunnel.h net: mpls: Increase max number of labels for lwt encap 2017-04-01 20:21:44 -07:00
mpls.h
mrp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ncsi.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ndisc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
neighbour.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
net_namespace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
net_ratelimit.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
netevent.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
netlabel.h net: convert netlbl_lsm_cache.refcount from atomic_t to refcount_t 2017-07-01 07:39:09 -07:00
netlink.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
netprio_cgroup.h
netrom.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nexthop.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nl802154.h
nsh.h openvswitch: enable NSH support 2017-11-08 16:12:33 +09:00
p8022.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ping.h
pkt_cls.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-10 10:00:18 +09:00
pkt_sched.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
pptp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
protocol.h IPv4: early demux can return an error code 2017-10-01 03:55:47 +01:00
psample.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
psnap.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
raw.h net: ipv4: add second dif to raw socket lookups 2017-08-07 11:39:21 -07:00
rawv6.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
red.h net_sched: red: Avoid illegal values 2017-12-05 14:37:13 -05:00
regulatory.h
request_sock.h tcp: socket option to set TCP fast open key 2017-10-20 13:21:36 +01:00
rose.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
route.h udp: perform source validation for mcast early demux 2017-10-01 03:55:47 +01:00
rtnetlink.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
sch_generic.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
scm.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
secure_seq.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
seg6_hmac.h
seg6.h ipv6: sr: add support for ip4ip6 encapsulation 2017-08-25 17:10:23 -07:00
slhc_vj.h
smc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
snmp.h
sock_reuseport.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sock.h net: remove hlist_nulls_add_tail_rcu() 2017-12-05 18:06:09 -05:00
Space.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
stp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
strparser.h strparser: Use delayed work instead of timer for msg timeout 2017-10-25 10:37:11 +09:00
switchdev.h net: bridge: Add/del switchdev object on host join/leave 2017-11-10 13:41:40 +09:00
tcp_states.h
tcp.h tcp: invalidate rate samples during SACK reneging 2017-12-08 10:07:02 -05:00
timewait_sock.h
tipc.h tipc: improve link resiliency when rps is activated 2017-11-11 15:36:05 +09:00
tls.h uapi: fix linux/tls.h userspace compilation error 2017-11-15 13:54:18 +09:00
transp_v6.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tso.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tun_proto.h vxlan: factor out VXLAN-GPE next protocol 2017-08-29 15:16:52 -07:00
udp_tunnel.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
udp.h IPv4: early demux can return an error code 2017-10-01 03:55:47 +01:00
udplite.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vsock_addr.h
vxlan.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
wext.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
wimax.h
x25.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
x25device.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xfrm.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00