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SeongJae Park af8c8a450b selftests: net: Add FIN_ACK processing order related latency spike test 
This commit adds a test for FIN_ACK process races related reconnection
latency spike issues.  The issue has described and solved by the
previous commit ("tcp: Reduce SYN resend delay if a suspicous ACK is
received").

The test program is configured with a server and a client process.  The
server creates and binds a socket to a port that dynamically allocated,
listen on it, and start a infinite loop.  Inside the loop, it accepts
connection, reads 4 bytes from the socket, and closes the connection.
The client is constructed as an infinite loop.  Inside the loop, it
creates a socket with LINGER and NODELAY option, connect to the server,
send 4 bytes data, try read some data from server.  After the read()
returns, it measure the latency from the beginning of this loop to this
point and if the latency is larger than 1 second (spike), print a
message.

Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: SeongJae Park <sjpark@amazon.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-02-02 13:33:21 -08:00
..
forwarding selftests: mlxsw: Add a TBF selftest 2020-01-25 10:56:31 +01:00
mptcp mptcp: add basic kselftest for mptcp 2020-01-24 13:44:08 +01:00
.gitignore selftests: net: Add FIN_ACK processing order related latency spike test 2020-02-02 13:33:21 -08:00
altnames.sh selftest: net: add alternative names test 2019-11-08 14:10:27 -08:00
config Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-07-08 19:48:57 -07:00
fcnal-test.sh fcnal-test: Fix vrf argument in local tcp tests 2020-01-06 13:46:39 -08:00
fib-onlink-tests.sh selftests: fib-onlink: Make quiet by default 2019-05-22 17:50:24 -07:00
fib_nexthop_multiprefix.sh selftests: Update fib_nexthop_multiprefix to handle missing ping6 2019-09-20 18:18:16 -07:00
fib_nexthops.sh selftests: Add test cases for ip nexthop flush proto XX 2019-09-19 18:35:55 -07:00
fib_rule_tests.sh selftests: fib_rule_tests: use pre-defined DEV_ADDR 2019-05-21 13:44:17 -07:00
fib_tests.sh selftests: Add source route tests to fib_tests 2019-11-07 16:16:55 -08:00
fin_ack_lat.c selftests: net: Add FIN_ACK processing order related latency spike test 2020-02-02 13:33:21 -08:00
fin_ack_lat.sh selftests: net: Add FIN_ACK processing order related latency spike test 2020-02-02 13:33:21 -08:00
icmp_redirect.sh selftests: icmp_redirect: Add support for routing via nexthop objects 2019-06-10 10:44:57 -07:00
in_netns.sh selftests/net: fix in_netns.sh script 2018-03-07 12:26:05 -05:00
ip6_gre_headroom.sh selftests: net: Test headroom handling of ip6_gre devices 2018-06-26 23:03:01 +09:00
ip_defrag.c selftests: net: ip_defrag: cover new IPv6 defrag behavior 2019-01-25 21:37:11 -08:00
ip_defrag.sh selftests: net: ip_defrag: cover new IPv6 defrag behavior 2019-01-25 21:37:11 -08:00
ipv6_flowlabel.c selftests/net: ipv6 flowlabel 2019-05-28 17:18:53 -07:00
ipv6_flowlabel.sh selftests/net: ipv6 flowlabel 2019-05-28 17:18:53 -07:00
ipv6_flowlabel_mgr.c selftests/net: ipv6 flowlabel 2019-05-28 17:18:53 -07:00
l2tp.sh selftests: Make l2tp.sh executable 2019-10-22 14:01:35 -07:00
Makefile selftests: net: Add FIN_ACK processing order related latency spike test 2020-02-02 13:33:21 -08:00
msg_zerocopy.c selftests: extend zerocopy tests to udp 2018-12-03 15:58:32 -08:00
msg_zerocopy.sh selftests: extend zerocopy tests to udp 2018-12-03 15:58:32 -08:00
netdevice.sh selftests: net: return Kselftest Skip code for skipped tests 2018-05-30 15:29:06 -06:00
nettest.c nettest: Add support for TCP_MD5 extensions 2020-01-02 15:51:22 -08:00
pmtu.sh selftests: pmtu: fix init mtu value in description 2019-12-20 21:52:21 -08:00
psock_fanout.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 222 2019-05-30 11:29:55 -07:00
psock_lib.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 222 2019-05-30 11:29:55 -07:00
psock_snd.c selftests/net: add packet socket packet_snd test 2018-06-04 09:50:01 -04:00
psock_snd.sh selftests/net: add packet socket packet_snd test 2018-06-04 09:50:01 -04:00
psock_tpacket.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 222 2019-05-30 11:29:55 -07:00
reuseaddr_conflict.c selftest: add a reuseaddr test 2017-09-19 14:09:26 -06:00
reuseport_addr_any.c selftests: net: reuseport_addr_any: silence clang warning 2018-12-20 19:26:52 -08:00
reuseport_addr_any.sh selftests: net: test that listening sockets match on address properly 2018-12-14 15:55:20 -08:00
reuseport_bpf.c bpf: do not blindly change rlimit in reuseport net selftest 2018-10-08 10:30:55 +02:00
reuseport_bpf_cpu.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
reuseport_bpf_numa.c selftests: net: reuseport_bpf_numa: don't fail if no numa support 2018-05-23 12:21:02 +02:00
reuseport_dualstack.c selftests: net: reuseport_dualstack: fix uninitalized parameter 2019-11-01 15:11:02 -07:00
route_localnet.sh selftests: add route_localnet test script 2019-06-24 09:02:47 -07:00
rtnetlink.sh selftests: rtnetlink: skip ipsec offload tests if netdevsim isn't present 2019-06-29 12:18:52 -07:00
run_afpackettests selftests/net: skip psock_tpacket test if KALLSYMS was not enabled 2019-07-02 20:17:49 -04:00
run_netsocktests selftests/net: correct the return value for run_netsocktests 2019-04-19 14:39:51 -07:00
so_txtime.c selftests/net: make so_txtime more robust to timer variance 2019-12-14 18:03:01 -08:00
so_txtime.sh selftests/net: make so_txtime more robust to timer variance 2019-12-14 18:03:01 -08:00
socket.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tcp_fastopen_backup_key.c selftests/net: fix warnings in TFO key rotation selftest 2019-06-16 14:27:14 -07:00
tcp_fastopen_backup_key.sh selftests: net: tcp_fastopen_backup_key.sh: fix shellcheck issue 2019-08-15 11:34:32 -07:00
tcp_inq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 253 2019-06-05 17:30:27 +02:00
tcp_mmap.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2019-11-25 20:02:57 -08:00
test_blackhole_dev.sh blackhole_dev: add a selftest 2019-07-01 19:34:46 -07:00
test_bpf.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
test_vxlan_fdb_changelink.sh selftests: net: Add test_vxlan_fdb_changelink.sh 2018-12-18 21:18:26 -08:00
test_vxlan_under_vrf.sh test/net: Add script for VXLAN underlay in a VRF 2018-12-03 14:16:01 -08:00
tls.c selftests: net: tls: remove recv_rcvbuf test 2019-12-14 19:53:53 -08:00
traceroute.sh selftest: net: add some traceroute tests 2019-11-06 17:35:49 -08:00
txring_overwrite.c selftests: txring_overwrite: fix incorrect test of mmap() return value 2019-07-08 15:39:38 -07:00
udpgro.sh selftests: fixes for UDP GRO 2019-03-01 11:24:00 -08:00
udpgro_bench.sh selftests: add functionals test for UDP GRO 2018-11-07 16:23:05 -08:00
udpgso.c linux-kselftest-5.5-rc1-fixes 2019-11-25 14:58:09 -08:00
udpgso.sh selftests: udp gso with corking 2018-04-26 15:09:52 -04:00
udpgso_bench.sh selftests/net: make udpgso_bench skip unsupported testcases 2019-06-19 17:33:47 -04:00
udpgso_bench_rx.c selftests: fixes for UDP GRO 2019-03-01 11:24:00 -08:00
udpgso_bench_tx.c selftests: net: Fix printf format warnings on arm 2019-11-07 14:54:08 -07:00
xfrm_policy.sh xfrm: policy: avoid warning splat when merging nodes 2019-08-20 08:09:42 +02:00