Eric Dumazet 216808c6ba tcp: refine rule to allow EPOLLOUT generation under mem pressure ... At the time commit ce5ec44099 ("tcp: ensure epoll edge trigger wakeup when write queue is empty") was added to the kernel, we still had a single write queue, combining rtx and write queues. Once we moved the rtx queue into a separate rb-tree, testing if sk_write_queue is empty has been suboptimal. Indeed, if we have packets in the rtx queue, we probably want to delay the EPOLLOUT generation at the time incoming packets will free them, making room, but more importantly avoiding flooding application with EPOLLOUT events. Solution is to use tcp_rtx_and_write_queues_empty() helper. Fixes: 75c119afe1 ("tcp: implement rb-tree based retransmit queue") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Jason Baron <jbaron@akamai.com> Cc: Neal Cardwell <ncardwell@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>		2019-12-13 21:58:40 -08:00
..
bpfilter
netfilter	netfilter: nf_flow_table_offload: add IPv6 support	2019-11-15 23:44:47 +01:00
af_inet.c	net: port < inet_prot_sock(net) --> inet_port_requires_bind_service(net, port)	2019-11-26 13:20:46 -08:00
ah4.c
arp.c
cipso_ipv4.c
datagram.c	inet: stop leaking jiffies on the wire	2019-11-01 14:57:52 -07:00
devinet.c	inet: protect against too small mtu values.	2019-12-07 11:55:11 -08:00
esp4.c	xfrm: remove get_mtu indirection from xfrm_type	2019-07-01 06:16:40 +02:00
esp4_offload.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next	2019-07-05 15:01:15 -07:00
fib_frontend.c	ipv4: move fib4_has_custom_rules() helper to public header	2019-11-21 14:45:55 -08:00
fib_lookup.h
fib_notifier.c	net: fib_notifier: propagate extack down to the notifier block callback	2019-10-04 11:10:56 -07:00
fib_rules.c	net: fib_notifier: propagate extack down to the notifier block callback	2019-10-04 11:10:56 -07:00
fib_semantics.c	ipv4: Fix table id reference in fib_sync_down_addr	2019-11-07 16:14:36 -08:00
fib_trie.c	net: fib_notifier: propagate extack down to the notifier block callback	2019-10-04 11:10:56 -07:00
fou.c
gre_demux.c	gre: refetch erspan header from skb->data after pskb_may_pull()	2019-12-07 11:53:27 -08:00
gre_offload.c
icmp.c	net: icmp: fix data-race in cmp_global_allow()	2019-11-08 12:32:43 -08:00
igmp.c	igmp: uninline ip_mc_validate_checksum()	2019-10-04 14:26:46 -07:00
inet_connection_sock.c	net: annotate lockless accesses to sk->sk_max_ack_backlog	2019-11-06 16:14:48 -08:00
inet_diag.c	tcp/dccp: fix possible race __inet_lookup_established()	2019-12-13 21:40:49 -08:00
inet_fragment.c	inet: frags: re-introduce skb coalescing for local delivery	2019-08-08 15:55:10 -07:00
inet_hashtables.c	tcp/dccp: fix possible race __inet_lookup_established()	2019-12-13 21:40:49 -08:00
inet_timewait_sock.c
inetpeer.c	inetpeer: fix data-race in inet_putpeer / inet_putpeer	2019-11-07 16:15:56 -08:00
ip_forward.c	ipv4: Revert removal of rt_uses_gateway	2019-09-20 18:23:33 -07:00
ip_fragment.c	inet: frags: re-introduce skb coalescing for local delivery	2019-08-08 15:55:10 -07:00
ip_gre.c	ip_gre: Make none-tun-dst gre tunnel store tunnel info as metadat_dst in recv	2019-11-20 22:21:30 -08:00
ip_input.c	ipv4: use dst hint for ipv4 list receive	2019-11-21 14:45:55 -08:00
ip_options.c
ip_output.c	inet: protect against too small mtu values.	2019-12-07 11:55:11 -08:00
ip_sockglue.c
ip_tunnel.c
ip_tunnel_core.c	lwtunnel: check erspan options before allocating tun_info	2019-11-21 11:47:39 -08:00
ip_vti.c
ipcomp.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next	2019-07-05 15:01:15 -07:00
ipconfig.c	net: ipconfig: Wait for deferred device probes	2019-11-20 12:39:53 -08:00
ipip.c	ipip: validate header length in ipip_tunnel_xmit	2019-07-25 17:23:40 -07:00
ipmr.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-11-16 21:51:42 -08:00
ipmr_base.c	net: fib_notifier: propagate extack down to the notifier block callback	2019-10-04 11:10:56 -07:00
Kconfig	net: Fix Kconfig indentation, continued	2019-11-21 12:00:21 -08:00
Makefile
metrics.c
netfilter.c
netlink.c
nexthop.c	net: remove the unnecessary strict_start_type in some policies	2019-11-21 11:46:18 -08:00
ping.c	ip: support SO_MARK cmsg	2019-09-13 21:44:19 +02:00
proc.c
protocol.c
raw.c	netfilter: drop bridge nf reset from nf_reset	2019-10-01 18:42:15 +02:00
raw_diag.c	net: don't warn in inet diag when IPV6 is disabled	2019-07-03 11:26:35 -07:00
route.c	ipv4: use dst hint for ipv4 list receive	2019-11-21 14:45:55 -08:00
syncookies.c	tcp: Remove one extra ktime_get_ns() from cookie_init_timestamp	2019-11-07 16:17:52 -08:00
sysctl_net_ipv4.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-11-22 16:27:24 -08:00
tcp.c	tcp: refine rule to allow EPOLLOUT generation under mem pressure	2019-12-13 21:58:40 -08:00
tcp_bbr.c	tcp_bbr: fix quantization code to not raise cwnd if not probing bandwidth	2019-09-27 20:37:50 +02:00
tcp_bic.c
tcp_bpf.c	net: skmsg: fix TLS 1.3 crash with full sk_msg	2019-11-28 22:40:29 -08:00
tcp_cdg.c
tcp_cong.c	tcp: warn if offset reach the maxlen limit when using snprintf	2019-11-20 22:23:36 -08:00
tcp_cubic.c
tcp_dctcp.c
tcp_dctcp.h
tcp_diag.c	net: annotate lockless accesses to sk->sk_max_ack_backlog	2019-11-06 16:14:48 -08:00
tcp_fastopen.c	tcp: add TCP_INFO status for failed client TFO	2019-10-25 19:25:37 -07:00
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c
tcp_input.c	tcp: add TCP_INFO status for failed client TFO	2019-10-25 19:25:37 -07:00
tcp_ipv4.c	tcp/dccp: fix possible race __inet_lookup_established()	2019-12-13 21:40:49 -08:00
tcp_lp.c
tcp_metrics.c
tcp_minisocks.c	tcp: annotate tp->snd_nxt lockless reads	2019-10-13 10:13:08 -07:00
tcp_nv.c
tcp_offload.c
tcp_output.c	tcp: refine tcp_write_queue_empty() implementation	2019-12-13 21:58:40 -08:00
tcp_rate.c
tcp_recovery.c
tcp_scalable.c
tcp_timer.c	tcp: refactor tcp_retransmit_timer()	2019-12-03 11:52:38 -08:00
tcp_ulp.c	tcp: warn if offset reach the maxlen limit when using snprintf	2019-11-20 22:23:36 -08:00
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c
tunnel4.c
udp.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-11-22 16:27:24 -08:00
udp_diag.c
udp_impl.h
udp_offload.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-06-22 08:59:24 -04:00
udp_tunnel.c
udplite.c
xfrm4_input.c
xfrm4_output.c	netfilter: Support iif matches in POSTROUTING	2019-11-15 23:44:48 +01:00
xfrm4_policy.c	ipv4: Revert removal of rt_uses_gateway	2019-09-20 18:23:33 -07:00
xfrm4_protocol.c
xfrm4_state.c
xfrm4_tunnel.c