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
..
bpfilter	…
netfilter	xtables: move icmp/icmpv6 logic to xt_tcpudp	2023-03-22 21:48:59 +01:00
Kconfig	tcp: configurable source port perturb table size	2022-11-16 13:02:04 +00:00
Makefile	bpf,fou: Add bpf_skb_{set,get}_fou_encap kfuncs	2023-04-12 16:40:39 -07:00
af_inet.c	tcp: deny tcp_disconnect() when threads are waiting	2023-05-29 22:03:48 -07:00
ah4.c	net: ipv4: Remove completion function scaffolding	2023-02-13 18:35:15 +08:00
arp.c	neighbour: annotate lockless accesses to n->nud_state	2023-03-15 00:37:32 -07:00
bpf_tcp_ca.c	bpf: Remove unused arguments from btf_struct_access().	2023-04-04 16:57:10 -07:00
cipso_ipv4.c	cipso_ipv4: use iph_set_totlen in skbuff_setattr	2023-02-01 20:54:27 -08:00
datagram.c	Networking fixes for 6.1-rc2, including fixes from netfilter	2022-10-20 17:24:59 -07:00
devinet.c	net: ipv4: Allow changing IPv4 address protocol	2023-03-23 08:32:52 +00:00
esp4.c	net: ipv4: Remove completion function scaffolding	2023-02-13 18:35:15 +08:00
esp4_offload.c	xfrm: replay: Fix ESN wrap around for GSO	2022-10-19 09:00:53 +02:00
fib_frontend.c	ipv4: Fix incorrect table ID in IOCTL path	2023-03-16 17:26:31 -07:00
fib_lookup.h	…
fib_notifier.c	…
fib_rules.c	…
fib_semantics.c	neighbour: switch to standard rcu, instead of rcu_bh	2023-03-21 21:32:18 -07:00
fib_trie.c	ipv4: Fix error return code in fib_table_insert()	2022-11-22 20:18:20 -08:00
fou_bpf.c	bpf,fou: Add bpf_skb_{set,get}_fou_encap kfuncs	2023-04-12 16:40:39 -07:00
fou_core.c	bpf,fou: Add bpf_skb_{set,get}_fou_encap kfuncs	2023-04-12 16:40:39 -07:00
fou_nl.c	ynl: broaden the license even more	2023-03-16 21:20:32 -07:00
fou_nl.h	ynl: broaden the license even more	2023-03-16 21:20:32 -07:00
gre_demux.c	…
gre_offload.c	net: gro: skb_gro_header helper function	2022-08-25 10:33:21 +02:00
icmp.c	icmp: guard against too small mtu	2023-03-31 21:37:06 -07:00
igmp.c	ipv4: constify ip_mc_sf_allow() socket argument	2023-03-17 08:56:37 +00:00
inet_connection_sock.c	tcp: deny tcp_disconnect() when threads are waiting	2023-05-29 22:03:48 -07:00
inet_diag.c	…
inet_fragment.c	net: dropreason: add SKB_DROP_REASON_FRAG_REASM_TIMEOUT	2022-10-31 20:14:27 -07:00
inet_hashtables.c	ipv6: Remove in6addr_any alternatives.	2023-03-29 08:22:52 +01:00
inet_timewait_sock.c	net: no longer support SOCK_REFCNT_DEBUG feature	2023-02-15 10:25:21 +00:00
inetpeer.c	…
ip_forward.c	…
ip_fragment.c	net: dropreason: add SKB_DROP_REASON_FRAG_TOO_FAR	2022-10-31 20:14:27 -07:00
ip_gre.c	erspan: do not use skb_mac_header() in ndo_start_xmit()	2023-03-21 21:16:26 -07:00
ip_input.c	net: add support for ipv4 big tcp	2023-02-01 20:54:27 -08:00
ip_options.c	…
ip_output.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-04-26 10:17:46 +02:00
ip_sockglue.c	ipv{4,6}/raw: fix output xfrm lookup wrt protocol	2023-05-23 15:38:59 +02:00
ip_tunnel.c	bpf-next-for-netdev	2023-04-13 16:43:38 -07:00
ip_tunnel_core.c	net: Add helper function to parse netlink msg of ip_tunnel_parm	2022-10-03 07:59:06 +01:00
ip_vti.c	ipv4: tunnels: use DEV_STATS_INC()	2022-11-16 12:48:44 +00:00
ipcomp.c	xfrm: ipcomp: add extack to ipcomp{4,6}_init_state	2022-09-29 07:18:00 +02:00
ipconfig.c	Driver core / kernfs changes for 6.0-rc1	2022-08-04 11:31:20 -07:00
ipip.c	ipip,ip_tunnel,sit: Add FOU support for externally controlled ipip devices	2023-04-12 16:40:39 -07:00
ipmr.c	treewide: Convert del_timer*() to timer_shutdown*()	2022-12-25 13:38:09 -08:00
ipmr_base.c	…
metrics.c	ipv4: prevent potential spectre v1 gadget in ip_metrics_convert()	2023-01-23 21:37:25 -08:00
netfilter.c	…
netlink.c	…
nexthop.c	neighbour: switch to standard rcu, instead of rcu_bh	2023-03-21 21:32:18 -07:00
ping.c	ping: Fix potentail NULL deref for /proc/net/icmp.	2023-04-04 18:56:58 -07:00
proc.c	icmp: Add counters for rate limits	2023-01-26 10:52:18 +01:00
protocol.c	…
raw.c	ipv{4,6}/raw: fix output xfrm lookup wrt protocol	2023-05-23 15:38:59 +02:00
raw_diag.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-04-06 12:01:20 -07:00
route.c	net: dst: fix missing initialization of rt_uncached	2023-04-21 20:26:56 -07:00
syncookies.c	mptcp: remove MPTCP 'ifdef' in TCP SYN cookies	2022-12-12 13:11:24 -08:00
sysctl_net_ipv4.c	tcp: restrict net.ipv4.tcp_app_win	2023-04-07 08:19:11 +01:00
tcp.c	tcp: Return user_mss for TCP_MAXSEG in CLOSE/LISTEN state if user_mss set	2023-05-29 22:03:48 -07:00
tcp_bbr.c	bpf: Add __bpf_kfunc tag to all kfuncs	2023-02-02 00:25:14 +01:00
tcp_bic.c	…
tcp_bpf.c	bpf, sockmap: Incorrectly handling copied_seq	2023-05-23 16:10:42 +02:00
tcp_cdg.c	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
tcp_cong.c	net: Update an existing TCP congestion control algorithm.	2023-03-22 22:53:00 -07:00
tcp_cubic.c	bpf: Add __bpf_kfunc tag to all kfuncs	2023-02-02 00:25:14 +01:00
tcp_dctcp.c	bpf: Add __bpf_kfunc tag to all kfuncs	2023-02-02 00:25:14 +01:00
tcp_dctcp.h	…
tcp_diag.c	tcp: Access &tcp_hashinfo via net.	2022-09-20 10:21:49 -07:00
tcp_fastopen.c	tcp: Make SYN ACK RTO tunable by BPF programs with TFO	2022-08-17 10:19:22 +01:00
tcp_highspeed.c	…
tcp_htcp.c	…
tcp_hybla.c	…
tcp_illinois.c	…
tcp_input.c	tcp: fix mishandling when the sack compression is deferred.	2023-06-01 13:15:12 +02:00
tcp_ipv4.c	tcp: fix possible sk_priority leak in tcp_v4_send_reset()	2023-05-12 10:05:50 +01:00
tcp_lp.c	…
tcp_metrics.c	genetlink: start to validate reserved header bytes	2022-08-29 12:47:15 +01:00
tcp_minisocks.c	tcp: preserve const qualifier in tcp_sk()	2023-03-18 12:23:34 +00:00
tcp_nv.c	…
tcp_offload.c	gro: add support of (hw)gro packets to gro stack	2022-10-03 12:38:34 +01:00
tcp_output.c	tcp: preserve const qualifier in tcp_sk()	2023-03-18 12:23:34 +00:00
tcp_plb.c	prandom: remove prandom_u32_max()	2022-12-20 03:13:45 +01:00
tcp_rate.c	…
tcp_recovery.c	tcp: preserve const qualifier in tcp_sk()	2023-03-18 12:23:34 +00:00
tcp_scalable.c	…
tcp_timer.c	tcp: fix mishandling when the sack compression is deferred.	2023-06-01 13:15:12 +02:00
tcp_ulp.c	net/ulp: use consistent error code when blocking ULP	2023-01-19 09:26:16 -08:00
tcp_vegas.c	…
tcp_vegas.h	…
tcp_veno.c	…
tcp_westwood.c	…
tcp_yeah.c	…
tunnel4.c	…
udp.c	bpf, sockmap: Pass skb ownership through read_skb	2023-05-23 16:09:47 +02:00
udp_bpf.c	bpf, sockmap: Fix an infinite loop error when len is 0 in tcp_bpf_recvmsg_parser()	2023-03-03 17:25:15 +01:00
udp_diag.c	udp: Access &udp_table via net.	2022-11-16 09:43:35 +00:00
udp_impl.h	…
udp_offload.c	udp: allow header check for dodgy GSO_UDP_L4 packets.	2022-12-12 09:29:56 +00:00
udp_tunnel_core.c	net/tunnel: wait until all sk_user_data reader finish before releasing the sock	2022-12-12 09:51:52 +00:00
udp_tunnel_nic.c	udp_tunnel: Add checks for nla_nest_start() in __udp_tunnel_nic_dump_write()	2022-11-29 08:44:24 -08:00
udp_tunnel_stub.c	…
udplite.c	udplite: Fix NULL pointer dereference in __sk_mem_raise_allocated().	2023-05-25 10:51:58 +02:00
xfrm4_input.c	…
xfrm4_output.c	…
xfrm4_policy.c	net: dst: fix missing initialization of rt_uncached	2023-04-21 20:26:56 -07:00
xfrm4_protocol.c	…
xfrm4_state.c	…
xfrm4_tunnel.c	xfrm: tunnel: add extack to ipip_init_state, xfrm6_tunnel_init_state	2022-09-29 07:18:00 +02:00