fuyuanli 30c6f0bf95 tcp: fix mishandling when the sack compression is deferred. ... In this patch, we mainly try to handle sending a compressed ack correctly if it's deferred. Here are more details in the old logic: When sack compression is triggered in the tcp_compressed_ack_kick(), if the sock is owned by user, it will set TCP_DELACK_TIMER_DEFERRED and then defer to the release cb phrase. Later once user releases the sock, tcp_delack_timer_handler() should send a ack as expected, which, however, cannot happen due to lack of ICSK_ACK_TIMER flag. Therefore, the receiver would not sent an ack until the sender's retransmission timeout. It definitely increases unnecessary latency. Fixes: 5d9f4262b7 ("tcp: add SACK compression") Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: fuyuanli <fuyuanli@didiglobal.com> Signed-off-by: Jason Xing <kerneljasonxing@gmail.com> Link: https://lore.kernel.org/netdev/20230529113804.GA20300@didi-ThinkCentre-M920t-N000/ Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/20230531080150.GA20424@didi-ThinkCentre-M920t-N000 Signed-off-by: Paolo Abeni <pabeni@redhat.com>		2023-06-01 13:15:12 +02:00
..
9p	9p: Add additional debug flags and open modes	2023-03-27 02:33:48 +00:00
bluetooth	Bluetooth: Fix UAF in hci_conn_hash_flush again	2023-05-19 15:37:45 -07:00
caif	…
iucv	…
mana	net: mana: Fix perf regression: remove rx_cqes, tx_cqes counters	2023-05-30 12:05:22 +02:00
netfilter	netfilter: nf_tables: deactivate anonymous set from preparation phase	2023-05-03 08:24:32 +02:00
netns	ipv6: add icmpv6_error_anycast_as_unicast for ICMPv6	2023-04-20 20:07:50 -07:00
nfc	…
phonet	…
sctp	sctp: delete the nested flexible array peer_init	2023-04-21 08:19:30 +01:00
tc_act	…
6lowpan.h	…
Space.h	…
act_api.h	…
addrconf.h	ipv6: constify inet6_mc_check()	2023-03-17 08:56:37 +00:00
af_ieee802154.h	…
af_rxrpc.h	rxrpc: Fix timeout of a call that hasn't yet been granted a channel	2023-05-01 07:43:19 +01:00
af_unix.h	af_unix: preserve const qualifier in unix_sk()	2023-03-18 12:23:33 +00:00
af_vsock.h	vsock: support sockmap	2023-03-29 08:19:38 +01:00
ah.h	…
amt.h	…
arp.h	neighbour: switch to standard rcu, instead of rcu_bh	2023-03-21 21:32:18 -07:00
atmclip.h	…
ax25.h	x25: preserve const qualifier in [a]x25_sk()	2023-03-18 12:23:34 +00:00
ax88796.h	…
bareudp.h	…
bond_3ad.h	…
bond_alb.h	…
bond_options.h	…
bonding.h	net: fix stack overflow when LRO is disabled for virtual interfaces	2023-05-19 22:46:37 -07:00
bpf_sk_storage.h	…
busy_poll.h	…
calipso.h	…
cfg80211-wext.h	…
cfg80211.h	wifi: nl80211: make nl80211_send_chandef non-static	2023-03-24 11:45:51 +01:00
cfg802154.h	…
checksum.h	…
cipso_ipv4.h	…
cls_cgroup.h	…
codel.h	…
codel_impl.h	…
codel_qdisc.h	…
compat.h	…
datalink.h	…
dcbevent.h	…
dcbnl.h	…
devlink.h	…
dropreason-core.h	net: extend drop reasons for multiple subsystems	2023-04-20 20:20:49 -07:00
dropreason.h	mac80211: use the new drop reasons infrastructure	2023-04-20 20:20:49 -07:00
dsa.h	net: create a netdev notifier for DSA to reject PTP on DSA master	2023-04-03 10:04:27 +01:00
dsa_stubs.h	net: dsa: replace NETDEV_PRE_CHANGE_HWTSTAMP notifier with a stub	2023-04-09 15:35:49 +01:00
dsfield.h	…
dst.h	net: dst: Switch to rcuref_t reference counting	2023-03-28 18:52:28 -07:00
dst_cache.h	…
dst_metadata.h	…
dst_ops.h	…
erspan.h	…
esp.h	…
espintcp.h	…
ethoc.h	…
failover.h	…
fib_notifier.h	…
fib_rules.h	…
firewire.h	…
flow.h	…
flow_dissector.h	flow_dissector: Address kdoc warnings	2023-04-20 19:25:02 -07:00
flow_offload.h	…
fou.h	bpf,fou: Add bpf_skb_{set,get}_fou_encap kfuncs	2023-04-12 16:40:39 -07:00
fq.h	…
fq_impl.h	…
garp.h	…
gen_stats.h	…
genetlink.h	…
geneve.h	…
gre.h	…
gro.h	…
gro_cells.h	…
gtp.h	…
gue.h	…
handshake.h	net/handshake: Enable the SNI extension to work properly	2023-05-24 22:05:24 -07:00
hwbm.h	…
icmp.h	…
ieee80211_radiotap.h	…
ieee802154_netdev.h	…
if_inet6.h	…
ife.h	…
ila.h	…
inet6_connection_sock.h	…
inet6_hashtables.h	…
inet_common.h	…
inet_connection_sock.h	…
inet_dscp.h	…
inet_ecn.h	…
inet_frag.h	net: move dropreason.h to dropreason-core.h	2023-04-20 20:20:49 -07:00
inet_hashtables.h	…
inet_sock.h	inet: preserve const qualifier in inet_sk()	2023-03-17 08:56:37 +00:00
inet_timewait_sock.h	…
inetpeer.h	…
ioam6.h	…
ip.h	ipv{4,6}/raw: fix output xfrm lookup wrt protocol	2023-05-23 15:38:59 +02:00
ip6_checksum.h	…
ip6_fib.h	ipv6: Remove in6addr_any alternatives.	2023-03-29 08:22:52 +01:00
ip6_route.h	net: dst: Prevent false sharing vs. dst_entry:: __refcnt	2023-03-28 18:52:22 -07:00
ip6_tunnel.h	…
ip_fib.h	…
ip_tunnels.h	bpf-next-for-netdev	2023-04-13 16:43:38 -07:00
ip_vs.h	ipvs: Correct spelling in comments	2023-04-22 01:39:41 +02:00
ipcomp.h	…
ipconfig.h	…
ipv6.h	…
ipv6_frag.h	…
ipv6_stubs.h	…
iw_handler.h	…
kcm.h	…
l3mdev.h	…
lag.h	…
lapb.h	…
lib80211.h	…
llc.h	…
llc_c_ac.h	…
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	…
lwtunnel.h	…
mac80211.h	wifi: mac80211: remove ieee80211_tx_status_8023	2023-04-18 14:48:01 +02:00
mac802154.h	…
macsec.h	…
mctp.h	…
mctpdevice.h	…
mip6.h	…
mld.h	…
mpls.h	…
mpls_iptunnel.h	…
mptcp.h	…
mrp.h	…
ncsi.h	…
ndisc.h	neighbour: switch to standard rcu, instead of rcu_bh	2023-03-21 21:32:18 -07:00
neighbour.h	neighbour: switch to standard rcu, instead of rcu_bh	2023-03-21 21:32:18 -07:00
net_debug.h	…
net_failover.h	…
net_namespace.h	…
net_ratelimit.h	…
net_trackers.h	…
netdev_queues.h	net: add macro netif_subqueue_completed_wake	2023-04-18 12:59:01 +02:00
netevent.h	…
netlabel.h	…
netlink.h	…
netprio_cgroup.h	…
netrom.h	…
nexthop.h	ipv6: remove nexthop_fib6_nh_bh()	2023-05-11 18:07:05 -07:00
nl802154.h	…
nsh.h	…
p8022.h	…
page_pool.h	page_pool: fix inconsistency for page_pool_ring_[un]lock()	2023-05-23 20:25:13 -07:00
pie.h	…
ping.h	…
pkt_cls.h	…
pkt_sched.h	net/sched: mqprio: allow per-TC user input of FP adminStatus	2023-04-13 22:22:10 -07:00
pptp.h	…
protocol.h	…
psample.h	…
psnap.h	…
raw.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-04-06 12:01:20 -07:00
rawv6.h	ipv6: raw: constify raw_v6_match() socket argument	2023-03-17 08:56:37 +00:00
red.h	…
regulatory.h	…
request_sock.h	…
rose.h	…
route.h	net: dst: Prevent false sharing vs. dst_entry:: __refcnt	2023-03-28 18:52:22 -07:00
rpl.h	…
rsi_91x.h	…
rtnetlink.h	…
rtnh.h	…
sch_generic.h	…
scm.h	scm: fix MSG_CTRUNC setting condition for SO_PASSSEC	2023-03-15 08:20:12 +00:00
secure_seq.h	…
seg6.h	…
seg6_hmac.h	…
seg6_local.h	…
selftests.h	…
slhc_vj.h	…
smc.h	net/smc: Introduce explicit check for v2 support	2023-03-15 08:18:35 +00:00
snmp.h	…
sock.h	tcp: deny tcp_disconnect() when threads are waiting	2023-05-29 22:03:48 -07:00
sock_reuseport.h	…
stp.h	…
strparser.h	…
switchdev.h	…
tc_wrapper.h	…
tcp.h	tcp: fix mishandling when the sack compression is deferred.	2023-06-01 13:15:12 +02:00
tcp_states.h	…
timewait_sock.h	…
tipc.h	…
tls.h	tls: rx: strp: preserve decryption status of skbs when needed	2023-05-19 08:37:37 +01:00
tls_toe.h	…
transp_v6.h	…
tso.h	…
tun_proto.h	…
udp.h	…
udp_tunnel.h	…
udplite.h	…
vsock_addr.h	…
vxlan.h	vxlan: Expose helper vxlan_build_gbp_hdr	2023-03-17 22:41:16 -07:00
wext.h	…
x25.h	x25: preserve const qualifier in [a]x25_sk()	2023-03-18 12:23:34 +00:00
x25device.h	…
xdp.h	bpf-next-for-netdev	2023-04-13 16:43:38 -07:00
xdp_priv.h	…
xdp_sock.h	…
xdp_sock_drv.h	…
xfrm.h	xfrm: add new device offload acquire flag	2023-03-20 11:29:33 +02:00
xsk_buff_pool.h	xsk: Fix unaligned descriptor validation	2023-04-06 09:53:05 -07:00