kernel/linux.git/tools/testing/selftests/net/cmsg_sender.c, branch v6.12.80

selftests: net: increase the delay for relative cmsg_time.sh test

2024-05-11T01:22:10+00:00

Slow machines can delay scheduling of the packets for milliseconds. Increase the delay to 8ms if KSFT_MACHINE_SLOW. Try to limit the variability by moving setsockopts earlier (before we read time). This fixes the "TXTIME rel" failures on debug kernels, like: Case ICMPv4 - TXTIME rel returned '', expected 'OK' Reviewed-by: Willem de Bruijn Link: https://lore.kernel.org/r/20240510005705.43069-2-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: net: fix timestamp not arriving in cmsg_time.sh

2024-05-11T01:22:00+00:00

On slow machines the SND timestamp sometimes doesn't arrive before we quit. The test only waits as long as the packet delay, so it's easy for a race condition to happen. Double the wait but do a bit of polling, once the SND timestamp arrives there's no point to wait any longer. This fixes the "TXTIME abs" failures on debug kernels, like: Case ICMPv4 - TXTIME abs returned '', expected 'OK' Reviewed-by: Willem de Bruijn Link: https://lore.kernel.org/r/20240510005705.43069-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2023-12-01T00:11:19+00:00

Cross-merge networking fixes after downstream PR. No conflicts. Signed-off-by: Jakub Kicinski

selftests/net: fix a char signedness issue

2023-11-28T02:12:07+00:00

Signedness of char is signed on x86_64, but unsigned on arm64. Fix the warning building cmsg_sender.c on signed platforms or forced with -fsigned-char: msg_sender.c:455:12: error: implicit conversion from 'int' to 'char' changes value from 128 to -128 [-Werror,-Wconstant-conversion] buf[0] = ICMPV6_ECHO_REQUEST; constant ICMPV6_ECHO_REQUEST is 128. Link: https://lwn.net/Articles/911914 Fixes: de17e305a810 ("selftests: net: cmsg_sender: support icmp and raw sockets") Signed-off-by: Willem de Bruijn Link: https://lore.kernel.org/r/20231124171645.1011043-3-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski

selftests: net: verify fq per-band packet limit

2023-11-21T01:48:36+00:00

Commit 29f834aa326e ("net_sched: sch_fq: add 3 bands and WRR scheduling") introduces multiple traffic bands, and per-band maximum packet count. Per-band limits ensures that packets in one class cannot fill the entire qdisc and so cause DoS to the traffic in the other classes. Verify this behavior: 1. set the limit to 10 per band 2. send 20 pkts on band A: verify that 10 are queued, 10 dropped 3. send 20 pkts on band A: verify that 0 are queued, 20 dropped 4. send 20 pkts on band B: verify that 10 are queued, 10 dropped Packets must remain queued for a period to trigger this behavior. Use SO_TXTIME to store packets for 100 msec. The test reuses existing upstream test infra. The script is a fork of cmsg_time.sh. The scripts call cmsg_sender. The test extends cmsg_sender with two arguments: * '-P' SO_PRIORITY There is a subtle difference between IPv4 and IPv6 stack behavior: PF_INET/IP_TOS sets IP header bits and sk_priority PF_INET6/IPV6_TCLASS sets IP header bits BUT NOT sk_priority * '-n' num pkts Send multiple packets in quick succession. I first attempted a for loop in the script, but this is too slow in virtualized environments, causing flakiness as the 100ms timeout is reached and packets are dequeued. Also do not wait for timestamps to be queued unless timestamps are requested. Signed-off-by: Willem de Bruijn Reviewed-by: Simon Horman Reviewed-by: Eric Dumazet Link: https://lore.kernel.org/r/20231116203449.2627525-1-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski

selftests: net: fix cmsg_so_mark.sh test hang

2022-12-30T07:37:26+00:00

This cmsg_so_mark.sh test will hang on non-amd64 systems because of the infinity loop for argument parsing in cmsg_sender. Variable "o" in cs_parse_args() for taking getopt() should be an int, otherwise it will be 255 when getopt() returns -1 on non-amd64 system and thus causing infinity loop. Link: https://lore.kernel.org/lkml/CA+G9fYsM2k7mrF7W4V_TrZ-qDauWM394=8yEJ=-t1oUg8_40YA@mail.gmail.com/t/ Signed-off-by: Po-Hsu Lin Signed-off-by: David S. Miller

net/cmsg_sender: Remove a semicolon

2022-07-01T12:52:28+00:00

Remove the repeated ';' from code. Signed-off-by: Li kunyu Signed-off-by: David S. Miller

selftests: net: fix array_size.cocci warning

2022-03-17T14:21:16+00:00

Fix array_size.cocci warning in tools/testing/selftests/net. Use `ARRAY_SIZE(arr)` instead of forms like `sizeof(arr)/sizeof(arr[0])`. It has been tested with gcc (Debian 8.3.0-6) 8.3.0. Signed-off-by: Guo Zhengkui Link: https://lore.kernel.org/r/20220316092858.9398-1-guozhengkui@vivo.com Signed-off-by: Paolo Abeni

selftests: net: basic test for IPV6_2292*

2022-02-17T14:22:09+00:00

Add a basic test to make sure ping sockets don't crash with IPV6_2292* options. Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller

selftests: net: test IPV6_HOPLIMIT

2022-02-17T14:22:09+00:00

Test setting IPV6_HOPLIMIT via setsockopt and cmsg across socket types. Output without the kernel support (this series): Case HOPLIMIT ICMP cmsg - packet data returned 1, expected 0 Case HOPLIMIT ICMP diff - packet data returned 1, expected 0 Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller