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Eric Dumazet 0a2f672511 tcp: add one more quick ack after after ECN events 
[ Upstream commit 15ecbe94a4 ]

Larry Brakmo proposal ( https://patchwork.ozlabs.org/patch/935233/
tcp: force cwnd at least 2 in tcp_cwnd_reduction) made us rethink
about our recent patch removing ~16 quick acks after ECN events.

tcp_enter_quickack_mode(sk, 1) makes sure one immediate ack is sent,
but in the case the sender cwnd was lowered to 1, we do not want
to have a delayed ack for the next packet we will receive.

Fixes: 522040ea5f ("tcp: do not aggressively quick ack after ECN events")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Neal Cardwell <ncardwell@google.com>
Cc: Lawrence Brakmo <brakmo@fb.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-03 07:50:45 +02:00
..
6lowpan
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
9p
9p/trans_virtio: discard zero-length reply
2018-02-22 15:42:30 +01:00
802
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
8021q
net: fix use-after-free in GRO with ESP
2018-07-22 14:28:44 +02:00
appletalk
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
atm
atm: Preserve value of skb->truesize when accounting to vcc
2018-07-22 14:28:43 +02:00
ax25
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
batman-adv
batman-adv: fix packet loss for broadcasted DHCP packets to a server
2018-05-30 07:52:19 +02:00
bluetooth
Bluetooth: Fix connection if directed advertising and privacy is used
2018-04-19 08:56:19 +02:00
bpf
…
bridge
netfilter: ebtables: reject non-bridge targets
2018-07-22 14:28:49 +02:00
caif
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
can
can: af_can: canfd_rcv(): replace WARN_ONCE by pr_warn_once
2018-01-23 19:58:17 +01:00
ceph
libceph, ceph: avoid memory leak when specifying same option several times
2018-05-30 07:52:04 +02:00
core
rtnetlink: add rtnl_link_state check in rtnl_configure_link
2018-07-28 07:55:42 +02:00
dcb
…
dccp
net: dccp: switch rx_tstamp_last_feedback to monotonic clock
2018-07-22 14:28:44 +02:00
decnet
dn_getsockoptdecnet: move nf_{get/set}sockopt outside sock lock
2018-02-25 11:07:52 +01:00
dns_resolver
KEYS: DNS: fix parsing multiple options
2018-07-22 14:28:49 +02:00
dsa
net: dsa: add error handling for pskb_trim_rcsum
2018-06-26 08:06:28 +08:00
ethernet
…
hsr
…
ieee802154
ieee802154: 6lowpan: fix possible NULL deref in lowpan_device_event()
2018-03-31 18:10:40 +02:00
ife
net: sched: ife: check on metadata length
2018-04-29 11:33:13 +02:00
ipv4
tcp: add one more quick ack after after ECN events
2018-08-03 07:50:45 +02:00
ipv6
multicast: do not restore deleted record source filter mode to new one
2018-07-28 07:55:42 +02:00
ipx
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
iucv
net/iucv: Free memory obtained by kzalloc
2018-03-31 18:10:41 +02:00
kcm
kcm: Fix use-after-free caused by clonned sockets
2018-06-11 22:49:19 +02:00
key
af_key: Always verify length of provided sadb_key
2018-06-16 09:45:14 +02:00
l2tp
l2tp: revert "l2tp: fix missing print session offset info"
2018-05-19 10:20:27 +02:00
l3mdev
…
lapb
…
llc
llc: properly handle dev_queue_xmit() return value
2018-05-30 07:52:20 +02:00
mac80211
mac80211: use timeout from the AddBA response instead of the request
2018-06-21 04:02:55 +09:00
mac802154
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mpls
mpls, nospec: Sanitize array index in mpls_label_ok()
2018-02-22 15:42:28 +01:00
ncsi
net/ncsi: Fix length of GVI response packet
2017-10-21 01:56:38 +01:00
netfilter
netfilter: nf_tables: check msg_type before nft_trans_set(trans)
2018-08-03 07:50:25 +02:00
netlabel
netlabel: If PF_INET6, check sk_buff ip header version
2018-05-30 07:52:40 +02:00
netlink
netlink: Don't shift with UB on nlk->ngroups
2018-08-03 07:50:45 +02:00
netrom
…
nfc
net/nfc: Avoid stalls when nfc_alloc_send_skb() returned NULL.
2018-07-22 14:28:49 +02:00
nsh
nsh: set mac len based on inner packet
2018-07-22 14:28:49 +02:00
openvswitch
openvswitch: Don't swap table in nlattr_set() after OVS_ATTR_NESTED is found
2018-05-19 10:20:24 +02:00
packet
net/packet: fix use-after-free
2018-07-22 14:28:46 +02:00
phonet
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
psample
MAINTAINERS: Update Yotam's E-mail
2017-11-01 12:19:03 +09:00
qrtr
qrtr: add MODULE_ALIAS macro to smd
2018-05-30 07:52:05 +02:00
rds
rds: avoid unenecessary cong_update in loop transport
2018-07-22 14:28:49 +02:00
rfkill
rfkill: gpio: fix memory leak in probe error path
2018-05-16 10:10:26 +02:00
rose
…
rxrpc
rxrpc: Fix the min security level for kernel calls
2018-06-21 04:02:56 +09:00
sched
net_sched: blackhole: tell upper qdisc about dropped packets
2018-07-22 14:28:46 +02:00
sctp
sctp: not allow transport timeout value less than HZ/5 for hb_timer
2018-06-11 22:49:20 +02:00
smc
smc: fix sendpage() call
2018-06-21 04:02:53 +09:00
strparser
strparser: Remove early eaten to fix full tcp receive buffer stall
2018-07-22 14:28:47 +02:00
sunrpc
xprtrdma: Fix corner cases when handling device removal
2018-07-22 14:28:42 +02:00
switchdev
…
tipc
tipc: eliminate KMSAN uninit-value in strcmp complaint
2018-06-21 04:02:56 +09:00
tls
sock: fix sg page frag coalescing in sk_alloc_sg
2018-07-28 07:55:42 +02:00
unix
Merge tag 'spdx_identifiers-4.14-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2017-11-02 10:04:46 -07:00
vmw_vsock
VSOCK: fix loopback on big-endian systems
2018-07-22 14:28:47 +02:00
wimax
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
wireless
cfg80211: clear wep keys after disconnection
2018-05-30 07:51:58 +02:00
x25
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
xfrm
xfrm: Fix transport mode skb control buffer usage.
2018-05-30 07:52:19 +02:00
compat.c
net: support compat 64-bit time in {s,g}etsockopt
2018-05-19 10:20:24 +02:00
Kconfig
…
Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
socket.c
socket: close race condition between sock_close() and sockfs_setattr()
2018-06-26 08:06:28 +08:00
sysctl_net.c
…