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android_kernel_samsung_sm8650/net/ipv4
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Eric Dumazet 1a9914884d tcp: batch calls to sk_flush_backlog() 
Starting from commit d41a69f1d390 ("tcp: make tcp_sendmsg() aware of socket backlog")
loopback flows got hurt, because for each skb sent, the socket receives an
immediate ACK and sk_flush_backlog() causes extra work.

Intent was to not let the backlog grow too much, but we went a bit too far.

We can check the backlog every 16 skbs (about 1MB chunks)
to increase TCP over loopback performance by about 15 %

Note that the call to sk_flush_backlog() handles a single ACK,
thanks to coalescing done on backlog, but cleans the 16 skbs
found in rtx rb-tree.

Reported-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-09 11:03:27 -07:00
..
bpfilter
SPDX update for 5.2-rc2, round 1
2019-05-21 12:33:38 -07:00
netfilter
netfilter: synproxy: fix erroneous tcp mss option
2019-07-16 13:17:01 +02:00
af_inet.c
ipv4: use indirect call wrappers for {tcp, udp}_{recv, send}msg()
2019-07-03 13:51:54 -07:00
ah4.c
xfrm: remove type and offload_type map from xfrm_state_afinfo
2019-06-06 08:34:50 +02:00
arp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cipso_ipv4.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
2019-05-21 11:28:45 +02:00
datagram.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
devinet.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-07-08 19:48:57 -07:00
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
esp4.c
xfrm: remove get_mtu indirection from xfrm_type
2019-07-01 06:16:40 +02:00
fib_frontend.c
fib: relax source validation check for loopback packets
2019-07-17 15:23:39 -07:00
fib_lookup.h
ipv4: Use accessors for fib_info nexthop data
2019-06-04 19:26:49 -07:00
fib_notifier.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fib_rules.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-06-07 11:00:14 -07:00
fib_semantics.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-06-17 20:20:36 -07:00
fib_trie.c
ipv4: Fix off-by-one in route dump counter without netlink strict checking
2019-07-02 14:06:47 -07:00
fou.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
gre_demux.c
net: remove unused parameter from skb_checksum_try_convert
2019-07-05 15:30:36 -07:00
gre_offload.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
icmp.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-06-07 11:00:14 -07:00
igmp.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-07-08 19:48:57 -07:00
inet_connection_sock.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-06-22 08:59:24 -04:00
inet_diag.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
inet_fragment.c
net/ipv4: cleanup error condition testing
2019-07-24 13:56:37 -07:00
inet_hashtables.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-06-07 11:00:14 -07:00
inet_timewait_sock.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
inetpeer.c
net: ipv4: use a dedicated counter for icmp_v4 redirect packets
2019-02-08 21:50:15 -08:00
ip_forward.c
ipv4: Prepare rtable for IPv6 gateway
2019-04-08 15:22:40 -07:00
ip_fragment.c
inet: fix various use-after-free in defrags units
2019-06-19 11:37:47 -04:00
ip_gre.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ip_input.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ip_options.c
netfilter: nf_tables: add support for matching IPv4 options
2019-06-21 18:35:51 +02:00
ip_output.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-06-27 21:06:39 -07:00
ip_sockglue.c
ip_sockglue: Fix missing-check bug in ip_ra_control()
2019-05-25 11:00:50 -07:00
ip_tunnel_core.c
ip_tunnel: allow not to count pkts on tstats by setting skb's dev to NULL
2019-06-18 20:48:45 -04:00
ip_tunnel.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 269
2019-06-05 17:30:29 +02:00
ip_vti.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
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
ipconfig: add carrier_timeout kernel parameter
2019-02-01 15:24:13 -08:00
ipip.c
ipip: validate header length in ipip_tunnel_xmit
2019-07-25 17:23:40 -07:00
ipmr_base.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-05-07 17:22:09 -07:00
ipmr.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
Kconfig
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
Makefile
net: Initial nexthop code
2019-05-28 21:37:30 -07:00
metrics.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
netfilter.c
netfilter: ipv4: remove useless export_symbol
2019-01-28 11:32:58 +01:00
netlink.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
nexthop.c
nexthops: add support for replace
2019-06-10 10:44:57 -07:00
ping.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
proc.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-06-17 20:20:36 -07:00
protocol.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
raw_diag.c
net: don't warn in inet diag when IPV6 is disabled
2019-07-03 11:26:35 -07:00
raw.c
ipv4: Use return value of inet_iif() for __raw_v4_lookup in the while loop
2019-06-25 12:46:02 -07:00
route.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-07-08 19:48:57 -07:00
syncookies.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
sysctl_net_ipv4.c
proc/sysctl: add shared variables for range check
2019-07-18 17:08:07 -07:00
tcp_bbr.c
tcp_bbr: adapt cwnd based on ack aggregation estimation
2019-01-24 22:27:27 -08:00
tcp_bic.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_bpf.c
bpf, tcp: correctly handle DONT_WAIT flags and timeo == 0
2019-05-16 01:36:13 +02:00
tcp_cdg.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_cong.c
tcp: fix tcp_set_congestion_control() use from bpf hook
2019-07-18 20:33:48 -07:00
tcp_cubic.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_dctcp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
tcp_dctcp.h
tcp: refactor DCTCP ECN ACK handling
2018-10-10 22:26:00 -07:00
tcp_diag.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
tcp_fastopen.c
net: fastopen: robustness and endianness fixes for SipHash
2019-06-22 16:30:37 -07:00
tcp_highspeed.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_htcp.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_hybla.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_illinois.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_input.c
bpf: add BPF_CGROUP_SOCK_OPS callback that is executed on every RTT
2019-07-03 16:52:01 +02:00
tcp_ipv4.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-06-17 20:20:36 -07:00
tcp_lp.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_metrics.c
tcp: refactor setting the initial congestion window
2019-05-01 11:47:54 -04:00
tcp_minisocks.c
tcp: add optional per socket transmit delay
2019-06-12 13:05:43 -07:00
tcp_nv.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_offload.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
tcp_output.c
net: Use skb_frag_off accessors
2019-07-30 14:21:32 -07:00
tcp_rate.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
tcp_recovery.c
tcp: introduce tcp_skb_timestamp_us() helper
2018-09-21 19:37:59 -07:00
tcp_scalable.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_timer.c
tcp: enforce tcp_min_snd_mss in tcp_mtu_probing()
2019-06-15 18:47:31 -07:00
tcp_ulp.c
bpf: sockmap/tls, close can race with map free
2019-07-22 16:04:17 +02:00
tcp_vegas.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_vegas.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tcp_veno.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_westwood.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_yeah.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp.c
tcp: batch calls to sk_flush_backlog()
2019-08-09 11:03:27 -07:00
tunnel4.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
udp_diag.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
udp_impl.h
udp: add missing rehash callback to udplite
2019-01-17 15:01:08 -08:00
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
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
udp.c
udp: Fix typo in net/ipv4/udp.c
2019-07-18 11:49:46 -07:00
udplite.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
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_output.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
xfrm4_policy.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
2019-04-30 09:26:13 -04:00
xfrm4_protocol.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
xfrm4_state.c
xfrm: remove eth_proto value from xfrm_state_afinfo
2019-06-06 08:34:50 +02:00
xfrm4_tunnel.c
xfrm: remove type and offload_type map from xfrm_state_afinfo
2019-06-06 08:34:50 +02:00