Eric Dumazet f9bfe4e6a9 tcp: lack of available data can also cause TSO defer ... tcp_tso_should_defer() can return true in three different cases : 1) We are cwnd-limited 2) We are rwnd-limited 3) We are application limited. Neal pointed out that my recent fix went too far, since it assumed that if we were not in 1) case, we must be rwnd-limited Fix this by properly populating the is_cwnd_limited and is_rwnd_limited booleans. After this change, we can finally move the silly check for FIN flag only for the application-limited case. The same move for EOR bit will be handled in net-next, since commit 1c09f7d073 ("tcp: do not try to defer skbs with eor mark (MSG_EOR)") is scheduled for linux-4.21 Tested by running 200 concurrent netperf -t TCP_RR -- -r 60000,100 and checking none of them was rwnd_limited in the chrono_stat output from "ss -ti" command. Fixes: 41727549de ("tcp: Do not underestimate rwnd_limited") Signed-off-by: Eric Dumazet <edumazet@google.com> Suggested-by: Neal Cardwell <ncardwell@google.com> Reviewed-by: Neal Cardwell <ncardwell@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Reviewed-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-12-07 16:18:22 -08:00
..
bpfilter	bpfilter: remove trailing newline	2018-07-24 14:10:42 -07:00
netfilter	netfilter: nat: fix double register in masquerade modules	2018-11-27 00:36:46 +01:00
af_inet.c	gso_segment: Reset skb->mac_len after modifying network header	2018-09-13 12:09:32 -07:00
ah4.c	net-ipv4: remove 2 always zero parameters from ipv4_redirect()	2018-09-26 20:30:55 -07:00
arp.c	net: Evict neighbor entries on carrier down	2018-10-12 09:47:39 -07:00
cipso_ipv4.c	net/ipv4: defensive cipso option parsing	2018-09-17 19:37:46 -07:00
datagram.c	ipv4: Allow sending multicast packets on specific i/f using VRF socket	2018-10-02 22:28:17 -07:00
devinet.c	net/{ipv4,ipv6}: Do not put target net if input nsid is invalid	2018-10-25 16:21:31 -07:00
esp4.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next	2018-10-01 22:31:17 -07:00
esp4_offload.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next	2018-07-27 09:33:37 -07:00
fib_frontend.c	net: Don't return invalid table id error when dumping all families	2018-10-24 14:06:25 -07:00
fib_lookup.h
fib_notifier.c
fib_rules.c	net: fib_rules: add extack support	2018-04-23 10:21:24 -04:00
fib_semantics.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-10-12 21:38:46 -07:00
fib_trie.c	net/ipv4: Plumb support for filtering route dumps	2018-10-16 00:13:12 -07:00
fou.c	Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net	2018-07-03 10:29:26 +09:00
gre_demux.c	ip_gre: fix parsing gre header in ipgre_err	2018-09-16 15:32:59 -07:00
gre_offload.c	Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net	2018-07-03 10:29:26 +09:00
icmp.c	net-ipv4: remove 2 always zero parameters from ipv4_redirect()	2018-09-26 20:30:55 -07:00
igmp.c	ipv4/igmp: fix v1/v2 switchback timeout based on rfc3376, 8.12	2018-10-29 20:26:06 -07:00
inet_connection_sock.c	inet: make sure to grab rcu_read_lock before using ireq->ireq_opt	2018-10-02 15:52:12 -07:00
inet_diag.c	sock_diag: request _diag module only when the family or proto has been registered	2018-03-12 11:03:42 -04:00
inet_fragment.c	inet: frags: better deal with smp races	2018-11-08 18:40:30 -08:00
inet_hashtables.c	mm: remove include/linux/bootmem.h	2018-10-31 08:54:16 -07:00
inet_timewait_sock.c	soreuseport: initialise timewait reuseport field	2018-04-07 22:32:32 -04:00
inetpeer.c	inetpeer: fix uninit-value in inet_getpeer	2018-04-09 10:57:35 -04:00
ip_forward.c	net: ipv4: Control SKB reprioritization after forwarding	2018-08-01 09:52:30 -07:00
ip_fragment.c	ipv4: ipv6: netfilter: Adjust the frag mem limit when truesize changes	2018-12-05 20:44:46 -08:00
ip_gre.c	net-ipv4: remove 2 always zero parameters from ipv4_redirect()	2018-09-26 20:30:55 -07:00
ip_input.c	net: use skb_list_del_init() to remove from RX sublists	2018-12-05 16:22:05 -08:00
ip_options.c
ip_output.c	net: always initialize pagedlen	2018-11-24 17:42:57 -08:00
ip_sockglue.c	net: bpfilter: fix iptables failure if bpfilter_umh is disabled	2018-11-05 17:12:18 -08:00
ip_tunnel.c	ip_tunnel: be careful when accessing the inner header	2018-09-24 12:27:04 -07:00
ip_tunnel_core.c	ip_tunnel: don't force DF when MTU is locked	2018-11-17 21:50:55 -08:00
ip_vti.c	net-ipv4: remove 2 always zero parameters from ipv4_redirect()	2018-09-26 20:30:55 -07:00
ipcomp.c	net-ipv4: remove 2 always zero parameters from ipv4_redirect()	2018-09-26 20:30:55 -07:00
ipconfig.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2018-06-06 18:39:49 -07:00
ipip.c	net-ipv4: remove 2 always zero parameters from ipv4_redirect()	2018-09-26 20:30:55 -07:00
ipmr.c	net: Don't return invalid table id error when dumping all families	2018-10-24 14:06:25 -07:00
ipmr_base.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-10-19 11:03:06 -07:00
Kconfig	net: remove blank lines at end of file	2018-07-24 14:10:43 -07:00
Makefile	bpf, sockmap: convert to generic sk_msg interface	2018-10-15 12:23:19 -07:00
metrics.c	net: common metrics init helper for FIB entries	2018-10-04 21:54:03 -07:00
netfilter.c	netfilter: utils: move nf_ip_checksum* from ipv4 to utils	2018-07-16 17:51:48 +02:00
netlink.c	ipv4: support sport, dport and ip_proto in RTM_GETROUTE	2018-05-23 15:14:12 -04:00
ping.c	ipv4: Allow sending multicast packets on specific i/f using VRF socket	2018-10-02 22:28:17 -07:00
proc.c	ip: discard IPv4 datagrams with overlapping segments.	2018-08-05 17:16:46 -07:00
protocol.c
raw.c	ipv4: Allow sending multicast packets on specific i/f using VRF socket	2018-10-02 22:28:17 -07:00
raw_diag.c
route.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-10-12 21:38:46 -07:00
syncookies.c	tcp: provide earliest departure time in skb->tstamp	2018-09-21 19:37:59 -07:00
sysctl_net_ipv4.c	net-tcp: /proc/sys/net/ipv4/tcp_probe_interval is a u32 not int	2018-09-26 20:33:21 -07:00
tcp.c	mm: remove include/linux/bootmem.h	2018-10-31 08:54:16 -07:00
tcp_bbr.c	tcp_bbr: centralize code to set gains	2018-10-17 22:22:53 -07:00
tcp_bic.c
tcp_bpf.c	bpf: tcp_bpf_recvmsg should return EAGAIN when nonblocking and no data	2018-10-30 23:31:22 +01:00
tcp_cdg.c	tcp: cdg: use tcp high resolution clock cache	2018-10-15 22:56:42 -07:00
tcp_cong.c
tcp_cubic.c
tcp_dctcp.c	tcp: refactor DCTCP ECN ACK handling	2018-10-10 22:26:00 -07:00
tcp_dctcp.h	tcp: refactor DCTCP ECN ACK handling	2018-10-10 22:26:00 -07:00
tcp_diag.c
tcp_fastopen.c
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c	net/tcp/illinois: replace broken algorithm reference link	2018-02-28 12:03:47 -05:00
tcp_input.c	tcp: address problems caused by EDT misshaps	2018-11-24 17:41:37 -08:00
tcp_ipv4.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-10-03 21:00:17 -07:00
tcp_lp.c
tcp_metrics.c	net: Drop pernet_operations::async	2018-03-27 13:18:09 -04:00
tcp_minisocks.c	tcp: do not restart timewait timer on rst reception	2018-08-31 23:10:35 -07:00
tcp_nv.c	tcp_nv: fix potential integer overflow in tcpnv_acked	2018-01-31 10:26:30 -05:00
tcp_offload.c	tcp: Don't coalesce decrypted and encrypted SKBs	2018-07-16 00:12:09 -07:00
tcp_output.c	tcp: lack of available data can also cause TSO defer	2018-12-07 16:18:22 -08:00
tcp_rate.c	tcp: introduce tcp_skb_timestamp_us() helper	2018-09-21 19:37:59 -07:00
tcp_recovery.c	tcp: introduce tcp_skb_timestamp_us() helper	2018-09-21 19:37:59 -07:00
tcp_scalable.c
tcp_timer.c	tcp: fix SNMP TCP timeout under-estimation	2018-11-30 17:22:41 -08:00
tcp_ulp.c	tcp, ulp: remove socket lock assertion on ULP cleanup	2018-10-16 12:38:41 -07:00
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c
tunnel4.c	inet: whitespace cleanup	2018-02-28 11:43:28 -05:00
udp.c	mm: remove include/linux/bootmem.h	2018-10-31 08:54:16 -07:00
udp_diag.c	net: diag: document swapped src/dst in udp_dump_one.	2018-10-28 19:27:21 -07:00
udp_impl.h
udp_offload.c	udp: gro behind static key	2018-10-05 11:52:38 -07:00
udp_tunnel.c
udplite.c	proc: introduce proc_create_net{,_data}	2018-05-16 07:24:30 +02:00
xfrm4_input.c	xfrm: reset transport header back to network header after all input transforms ahave been applied	2018-09-04 10:26:30 +02:00
xfrm4_mode_beet.c
xfrm4_mode_transport.c	xfrm: reset transport header back to network header after all input transforms ahave been applied	2018-09-04 10:26:30 +02:00
xfrm4_mode_tunnel.c	xfrm: Verify MAC header exists before overwriting eth_hdr(skb)->h_proto	2018-03-07 10:54:29 +01:00
xfrm4_output.c	net: xfrm: use skb_gso_validate_network_len() to check gso sizes	2018-03-04 17:49:17 -05:00
xfrm4_policy.c	net: Drop pernet_operations::async	2018-03-27 13:18:09 -04:00
xfrm4_protocol.c
xfrm4_state.c
xfrm4_tunnel.c