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linux/tools/testing/selftests/net
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Kuniyuki Iwashima 6df96146b2 selftest: Add test for SO_INCOMING_CPU. 
Some highly optimised applications use SO_INCOMING_CPU to make them
efficient, but they didn't test if it's working correctly by getsockopt()
to avoid slowing down.  As a result, no one noticed it had been broken
for years, so it's a good time to add a test to catch future regression.

The test does

  1) Create $(nproc) TCP listeners associated with each CPU.

  2) Create 32 child sockets for each listener by calling
     sched_setaffinity() for each CPU.

  3) Check if accept()ed sockets' sk_incoming_cpu matches
     listener's one.

If we see -EAGAIN, SO_INCOMING_CPU is broken.  However, we might not see
any error even if broken; the kernel could miraculously distribute all SYN
to correct listeners.  Not to let that happen, we must increase the number
of clients and CPUs to some extent, so the test requires $(nproc) >= 2 and
creates 64 sockets at least.

Test:
  $ nproc
  96
  $ ./so_incoming_cpu

Before the previous patch:

  # Starting 12 tests from 5 test cases.
  #  RUN           so_incoming_cpu.before_reuseport.test1 ...
  # so_incoming_cpu.c:191:test1:Expected cpu (5) == i (0)
  # test1: Test terminated by assertion
  #          FAIL  so_incoming_cpu.before_reuseport.test1
  not ok 1 so_incoming_cpu.before_reuseport.test1
  ...
  # FAILED: 0 / 12 tests passed.
  # Totals: pass:0 fail:12 xfail:0 xpass:0 skip:0 error:0

After:

  # Starting 12 tests from 5 test cases.
  #  RUN           so_incoming_cpu.before_reuseport.test1 ...
  # so_incoming_cpu.c:199:test1:SO_INCOMING_CPU is very likely to be working correctly with 3072 sockets.
  #            OK  so_incoming_cpu.before_reuseport.test1
  ok 1 so_incoming_cpu.before_reuseport.test1
  ...
  # PASSED: 12 / 12 tests passed.
  # Totals: pass:12 fail:0 xfail:0 xpass:0 skip:0 error:0

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-10-25 11:35:16 +02:00
..
af_unix selftests: net: af_unix: Fix a build error of unix_connect.c. 2022-07-20 21:02:15 -07:00
bpf selftests net: fix kselftest net fatal error 2022-06-29 20:15:57 -07:00
forwarding selftests: bridge_igmp: Remove unnecessary address deletion 2022-10-19 14:01:08 +01:00
mptcp selftests: mptcp: update and extend fastclose test-cases 2022-10-03 11:18:53 +01:00
.gitignore selftest: Add test for SO_INCOMING_CPU. 2022-10-25 11:35:16 +02:00
altnames.sh selftest: net: fix typo in altname test 2021-09-12 10:48:26 +01:00
amt.sh selftests: set amt.sh executable 2022-01-05 10:27:19 -08:00
arp_ndisc_evict_nocarrier.sh selftests: net: add arp_ndisc_evict_nocarrier 2021-11-01 19:57:15 -07:00
arp_ndisc_untracked_subnets.sh selftests: net: arp_ndisc_untracked_subnets: test for arp_accept and accept_untracked_na 2022-07-15 18:55:50 -07:00
bareudp.sh selftests: set conf.all.rp_filter=0 in bareudp.sh 2020-11-12 16:14:38 -08:00
bind_bhash.c selftests/net: Add test for timing a bind request to a port with a populated bhash entry 2022-08-24 19:30:09 -07:00
bind_bhash.sh selftests/net: Add test for timing a bind request to a port with a populated bhash entry 2022-08-24 19:30:09 -07:00
cmsg_ipv6.sh selftests: net: basic test for IPV6_2292* 2022-02-17 14:22:09 +00:00
cmsg_sender.c net/cmsg_sender: Remove a semicolon 2022-07-01 13:52:28 +01:00
cmsg_so_mark.sh selftests: net: cmsg_so_mark: test with SO_MARK set by setsockopt 2022-02-10 15:04:51 +00:00
cmsg_time.sh selftests: net: test standard socket cmsgs across UDP and ICMP sockets 2022-02-10 15:04:52 +00:00
config Revert "selftests: net: Add tls config dependency for tls selftests" 2022-03-28 16:15:54 -07:00
devlink_port_split.py selftests: net: devlink_port_split: check devlink returned an element before dereferencing it 2021-06-28 16:14:38 -07:00
drop_monitor_tests.sh selftests: net: Add drop monitor test 2020-09-30 18:01:26 -07:00
fcnal-test.sh net-next: Fix IP_UNICAST_IF option behavior for connected sockets 2022-08-31 19:51:06 -07:00
fib_nexthop_multiprefix.sh selftests: fib_nexthop_multiprefix: fix cleanup() netns deletion 2020-07-14 15:06:12 -07:00
fib_nexthop_nongw.sh selftests/net: test nexthop without gw 2022-07-14 14:41:19 +02:00
fib_nexthops.sh ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference 2022-10-07 08:47:08 +01:00
fib_rule_tests.sh selftests: net: fib_rule_tests: fix support for running individual tests 2022-07-01 13:37:13 +01:00
fib_tests.sh selftests: fib_test: Add a test case for IPv4 broadcast neighbours 2022-02-21 11:44:30 +00:00
fib-onlink-tests.sh
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
gre_gso.sh selftests: net: switch to socat in the GSO GRE test 2021-11-12 19:59:01 -08:00
gro.c Networking changes for 5.17. 2022-01-10 19:06:09 -08:00
gro.sh selftests/net: allow GRO coalesce test on veth 2021-08-26 12:03:49 +01:00
hwtstamp_config.c selftests: move timestamping selftests to net folder 2020-03-29 21:48:30 -07:00
icmp_redirect.sh selftests: icmp_redirect: pass xfail=0 to log_test() 2021-12-12 12:56:41 +00:00
icmp.sh selftests/net: Add icmp.sh for testing ICMP dummy address responses 2021-06-18 12:13:24 -07:00
in_netns.sh
io_uring_zerocopy_tx.c selftest/net: adjust io_uring sendzc notif handling 2022-09-23 14:57:27 -06:00
io_uring_zerocopy_tx.sh selftests/net: return back io_uring zc send tests 2022-09-01 09:13:33 -06:00
ioam6_parser.c selftests: net: ioam: expect support for Queue depth data 2022-01-21 19:26:39 -08:00
ioam6.sh selftests: net: fix IOAM test skip return code 2022-08-02 09:51:31 +02:00
ip_defrag.c selftests: net: ip_defrag: ignore EPERM 2020-06-02 15:54:20 -07:00
ip_defrag.sh selftests: net: ip_defrag: modprobe missing nf_defrag_ipv6 support 2020-07-17 12:49:18 -07:00
ip6_gre_headroom.sh
ipsec.c selftests/net: Refactor xfrm_fill_key() to use array of structs 2022-08-16 11:28:13 +02:00
ipv6_flowlabel_mgr.c
ipv6_flowlabel.c ping: support ipv6 ping socket flow labels 2022-07-22 12:40:27 +01:00
ipv6_flowlabel.sh ping: support ipv6 ping socket flow labels 2022-07-22 12:40:27 +01:00
l2_tos_ttl_inherit.sh selftests/net: test l2 tunnel TOS/TTL inheriting 2022-08-19 16:48:41 -07:00
l2tp.sh selftests: Make l2tp.sh executable 2019-10-22 14:01:35 -07:00
Makefile selftest: Add test for SO_INCOMING_CPU. 2022-10-25 11:35:16 +02:00
msg_zerocopy.c selftests/net: relax cpu affinity requirement in msg_zerocopy test 2020-08-05 12:25:35 -07:00
msg_zerocopy.sh
ndisc_unsolicited_na_test.sh net/ipv6: Expand and rename accept_unsolicited_na to accept_untracked_na 2022-05-31 11:36:57 +02:00
netdevice.sh
nettest.c net-next: Fix IP_UNICAST_IF option behavior for connected sockets 2022-08-31 19:51:06 -07:00
pmtu.sh selftest: net: Test IPv4 PMTU exceptions with DSCP and ECN 2022-03-18 14:06:45 -07:00
psock_fanout.c selftests: net: fix array_size.cocci warning 2022-03-17 15:21:16 +01:00
psock_lib.h
psock_snd.c selftests/net: enable lo.accept_local in psock_snd test 2022-05-25 21:58:35 -07:00
psock_snd.sh selftests/net: remove min gso test in packet_snd 2021-08-02 10:34:04 +01:00
psock_tpacket.c
reuseaddr_conflict.c
reuseaddr_ports_exhausted.c selftests/net: fix warnings on reuseaddr_ports_exhausted 2021-03-16 15:01:21 -07:00
reuseaddr_ports_exhausted.sh selftests: net: Add SO_REUSEADDR test to check if 4-tuples are fully utilized. 2020-03-12 12:08:09 -07:00
reuseport_addr_any.c selftests/net: add definition for SOL_DCCP to fix compilation errors for old libc 2020-03-21 20:23:10 -07:00
reuseport_addr_any.sh
reuseport_bpf_cpu.c
reuseport_bpf_numa.c selftests: net: fix array_size.cocci warning 2022-03-07 12:23:27 +00:00
reuseport_bpf.c selftests: Fix the if conditions of in test_extra_filter() 2022-09-27 11:00:02 +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: Use more sensible tos values 2022-02-03 19:11:21 -08:00
run_afpackettests selftests/net: Use kselftest skip code for skipped tests 2021-08-24 16:49:09 -07:00
run_netsocktests
rxtimestamp.c selftests/net: remove ARRAY_SIZE define from individual tests 2021-12-10 17:50:57 -07:00
rxtimestamp.sh selftests/net: plug rxtimestamp test into kselftest framework 2020-06-23 20:36:46 -07:00
settings kselftests/net: adapt the timeout to the largest runtime 2022-01-13 12:53:22 +00:00
setup_loopback.sh selftests/net: allow GRO coalesce test on veth 2021-08-26 12:03:49 +01:00
setup_veth.sh selftests/net: allow GRO coalesce test on veth 2021-08-26 12:03:49 +01:00
sk_bind_sendto_listen.c selftests/net: Add sk_bind_sendto_listen and sk_connect_zero_addr 2022-08-24 19:30:09 -07:00
sk_connect_zero_addr.c selftests/net: Add sk_bind_sendto_listen and sk_connect_zero_addr 2022-08-24 19:30:09 -07:00
so_incoming_cpu.c selftest: Add test for SO_INCOMING_CPU. 2022-10-25 11:35:16 +02:00
so_netns_cookie.c tools/testing: add a selftest for SO_NETNS_COOKIE 2021-06-24 11:13:05 -07:00
so_txtime.c selftests/net: so_txtime: usage(): fix documentation of default clock 2022-05-03 13:18:26 +02:00
so_txtime.sh selftests/net: so_txtime multi-host support 2021-03-31 17:48:21 -07:00
socket.c selftests/net: remove ARRAY_SIZE define from individual tests 2021-12-10 17:50:57 -07:00
srv6_end_dt4_l3vpn_test.sh selftests/net: Use kselftest skip code for skipped tests 2021-08-24 16:49:09 -07:00
srv6_end_dt6_l3vpn_test.sh selftests/net: Use kselftest skip code for skipped tests 2021-08-24 16:49:09 -07:00
srv6_end_dt46_l3vpn_test.sh selftests/net: Use kselftest skip code for skipped tests 2021-08-24 16:49:09 -07:00
srv6_end_next_csid_l3vpn_test.sh selftests: seg6: add selftest for NEXT-C-SID flavor in SRv6 End behavior 2022-09-20 12:33:22 +02:00
srv6_hencap_red_l3vpn_test.sh selftests: seg6: add selftest for SRv6 H.Encaps.Red behavior 2022-07-29 12:14:03 +01:00
srv6_hl2encap_red_l2vpn_test.sh selftests: seg6: add selftest for SRv6 H.L2Encaps.Red behavior 2022-07-29 12:14:03 +01:00
stress_reuseport_listen.c net: selftests: Stress reuseport listen 2022-05-12 16:52:18 -07:00
stress_reuseport_listen.sh net: selftests: Stress reuseport listen 2022-05-12 16:52:18 -07:00
tap.c selftests: add few test cases for tap driver 2022-08-05 08:59:15 +01:00
tcp_fastopen_backup_key.c selftests/net: remove ARRAY_SIZE define from individual tests 2021-12-10 17:50:57 -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 selftests: net: tcp_mmap: Use huge pages in receive path 2020-08-20 16:14:53 -07:00
test_blackhole_dev.sh blackhole_dev: add a selftest 2019-07-01 19:34:46 -07:00
test_bpf.sh
test_ingress_egress_chaining.sh selftests: add selftest for chaining of tc ingress handling to egress 2022-10-19 14:04:36 +01:00
test_vxlan_fdb_changelink.sh
test_vxlan_under_vrf.sh selftests: test_vxlan_under_vrf: Fix broken test case 2022-03-25 17:00:11 -07:00
test_vxlan_vnifiltering.sh selftests: add new tests for vxlan vnifiltering 2022-03-01 08:38:02 +00:00
timestamping.c selftests/net: timestamping: Fix bind_phc check 2022-01-31 11:44:04 +00:00
tls.c selftests: tls: handful of memrnd() and length checks 2022-07-28 21:49:59 -07:00
toeplitz_client.sh selftests/net: toeplitz test 2021-08-05 13:14:09 +01:00
toeplitz.c selftests: net: fix array_size.cocci warning 2022-03-17 15:21:16 +01:00
toeplitz.sh selftests/net: toeplitz test 2021-08-05 13:14:09 +01:00
traceroute.sh selftest: net: add some traceroute tests 2019-11-06 17:35:49 -08:00
tun.c selftest: tun: add test for NAPI dismantle 2022-06-30 11:34:10 -07:00
txring_overwrite.c selftests: txring_overwrite: fix incorrect test of mmap() return value 2019-07-08 15:39:38 -07:00
txtimestamp.c selftests: net: change fprintf format specifiers 2022-03-21 16:37:54 -07:00
txtimestamp.sh selftest: txtimestamp: fix net ns entry logic 2020-07-21 16:11:07 -07:00
udpgro_bench.sh selftests/net: fix section name when using xdp_dummy.o 2022-07-01 20:16:02 -07:00
udpgro_frglist.sh selftests/net: fix section name when using xdp_dummy.o 2022-07-01 20:16:02 -07:00
udpgro_fwd.sh selftests/net: fix section name when using xdp_dummy.o 2022-07-01 20:16:02 -07:00
udpgro.sh selftests/net: fix section name when using xdp_dummy.o 2022-07-01 20:16:02 -07:00
udpgso_bench_rx.c selftests/net: udpgso_bench_rx: fix port argument 2021-11-11 12:24:26 +00:00
udpgso_bench_tx.c selftests/net: udpgso_bench_tx: fix dst ip argument 2021-12-29 17:29:50 -08:00
udpgso_bench.sh selftests/net: pass ipv6_args to udpgso_bench's IPv6 TCP test 2022-06-23 21:19:03 -07:00
udpgso.c selftests: Calculate udpgso segment count without header adjustment 2021-12-23 19:20:06 -08:00
udpgso.sh
unicast_extensions.sh selftests/net: Use kselftest skip code for skipped tests 2021-08-24 16:49:09 -07:00
veth.sh selftests/net: fix section name when using xdp_dummy.o 2022-07-01 20:16:02 -07:00
vrf_route_leaking.sh selftests: Add VRF route leaking tests 2020-10-14 17:14:28 -07:00
vrf_strict_mode_test.sh selftests: net: vrf_strict_mode_test: add support to select a test to run 2022-05-02 10:48:29 +02:00
vrf-xfrm-tests.sh selftests: Add tests for vrf and xfrms 2020-04-22 19:31:40 -07:00
xfrm_policy.sh xfrm: Fix wraparound in xfrm_policy_addr_delta() 2021-01-04 10:35:09 +01:00