TencentOS-kernel/net
Yuchung Cheng cdb3cb8564 tcp: allow at most one TLP probe per flight
[ Upstream commit 76be93fc0702322179bb0ea87295d820ee46ad14 ]

Previously TLP may send multiple probes of new data in one
flight. This happens when the sender is cwnd limited. After the
initial TLP containing new data is sent, the sender receives another
ACK that acks partial inflight.  It may re-arm another TLP timer
to send more, if no further ACK returns before the next TLP timeout
(PTO) expires. The sender may send in theory a large amount of TLP
until send queue is depleted. This only happens if the sender sees
such irregular uncommon ACK pattern. But it is generally undesirable
behavior during congestion especially.

The original TLP design restrict only one TLP probe per inflight as
published in "Reducing Web Latency: the Virtue of Gentle Aggression",
SIGCOMM 2013. This patch changes TLP to send at most one probe
per inflight.

Note that if the sender is app-limited, TLP retransmits old data
and did not have this issue.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-16 16:32:42 +08:00
..
6lowpan Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
9p Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
802 Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
8021q Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
appletalk Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
atm Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ax25 AX.25: Prevent out-of-bounds read in ax25_sendmsg() 2021-03-16 16:32:40 +08:00
batman-adv batman-adv: Revert "disable ethtool link speed detection when auto negotiation off" 2021-03-16 16:29:21 +08:00
bluetooth Bluetooth: Add SCO fallback for invalid LMP parameters error 2021-03-16 16:29:19 +08:00
bpf Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
bpfilter net/bpfilter: remove superfluous testing message 2021-03-16 16:26:23 +08:00
bridge bridge: mcast: Fix MLD2 Report IPv6 payload length check 2021-03-16 16:31:42 +08:00
caif Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
can Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ceph libceph: don't omit recovery_deletes in target_copy() 2021-03-16 16:32:16 +08:00
core rtnetlink: Fix memory(net_device) leak when ->newlink fails 2021-03-16 16:32:42 +08:00
dcb Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dccp dccp: Fix possible memleak in dccp_init and dccp_fini 2021-03-16 16:29:07 +08:00
decnet Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dns_resolver KEYS: Don't write out to userspace while holding key semaphore 2021-03-16 16:26:42 +08:00
dsa net: dsa: declare lockless TX feature for slave ports 2021-03-16 16:28:42 +08:00
ethernet Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
hsr hsr: check protocol version in hsr_newlink() 2021-03-16 16:26:20 +08:00
ieee802154 Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ife Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ipv4 tcp: allow at most one TLP probe per flight 2021-03-16 16:32:42 +08:00
ipv6 net: udp: Fix wrong clean up for IS_UDPLITE macro 2021-03-16 16:32:41 +08:00
iucv Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
kcm Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
key Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
l2tp l2tp: remove skb_dst_set() from l2tp_xmit_skb() 2021-03-16 16:31:43 +08:00
l3mdev Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
lapb Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
llc llc: make sure applications use ARPHRD_ETHER 2021-03-16 16:31:43 +08:00
mac80211 mac80211: allow rx of mesh eapol frames with default rx key 2021-03-16 16:32:18 +08:00
mac802154 Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
mpls Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ncsi Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
netfilter ipvs: fix the connection sync failed in some cases 2021-03-16 16:32:27 +08:00
netlabel netlabel: cope with NULL catmap 2021-03-16 16:27:47 +08:00
netlink genetlink: remove genl_bind 2021-03-16 16:31:42 +08:00
netrom net: netrom: Fix potential nr_neigh refcnt leak in nr_add_node 2021-03-16 16:26:51 +08:00
nfc Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
nsh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
openvswitch openvswitch: take into account de-fragmentation/gso_size in execute_check_pkt_len 2021-03-16 16:30:47 +08:00
packet Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
phonet Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
psample Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
qrtr qrtr: orphan socket in qrtr_release() 2021-03-16 16:32:41 +08:00
rds net/rds: Use ERR_PTR for rds_message_alloc_sgs() 2021-03-16 16:27:58 +08:00
rfkill Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
rose Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
rxrpc rxrpc: Fix sendmsg() returning EPIPE due to recvmsg() returning ENODATA 2021-03-16 16:32:42 +08:00
sched sched: consistently handle layer3 header accesses in the presence of VLANs 2021-03-16 16:31:44 +08:00
sctp sctp: Don't advertise IPv4 addresses if ipv6only is set on the socket 2021-03-16 16:30:47 +08:00
smc Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
strparser Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
sunrpc xprtrdma: fix incorrect header size calculations 2021-03-16 16:32:00 +08:00
switchdev Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tipc tipc: block BH before using dst_cache 2021-03-16 16:28:25 +08:00
tls bpf: Fix running sk_skb program types with ktls 2021-03-16 16:29:38 +08:00
toa Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
unix Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
vmw_vsock vsock/virtio: annotate 'the_virtio_vsock' RCU pointer 2021-03-16 16:32:24 +08:00
wimax Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
wireless nl80211: don't return err unconditionally in nl80211_start_ap() 2021-03-16 16:31:29 +08:00
x25 net/x25: Fix x25_neigh refcnt leak when receiving frame 2021-03-16 16:26:51 +08:00
xdp xdp: Fix xsk_generic_xmit errno 2021-03-16 16:30:35 +08:00
xfrm xfrm: Fix double ESP trailer insertion in IPsec crypto offload. 2021-03-16 16:30:55 +08:00
Kconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Makefile Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
compat.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
socket.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
sysctl_net.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00