Willem de Bruijn a0bc96c0cd selftests: net: verify fq per-band packet limit ... Commit 29f834aa32 ("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 <willemb@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/20231116203449.2627525-1-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2023-11-20 17:48:36 -08:00
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accounting
arch	ARM:	2023-11-02 15:45:15 -10:00
bootconfig
bpf	bpftool: Extend net dump with netkit progs	2023-10-24 16:07:32 -07:00
build	perf tools fixes for v6.6: 2nd batch	2023-10-30 13:46:27 -07:00
certs
cgroup
counter
crypto/ccp	crypto: ccp - Fix some unfused tests	2023-09-15 18:29:45 +08:00
debugging
edid
firewire
firmware
gpio
hv	hv/hv_kvp_daemon:Support for keyfile based connection profile	2023-10-10 03:42:29 +00:00
iio	tools: iio: iio_generic_buffer ensure alignment	2023-10-05 16:16:20 +01:00
include	perf tools changes for v6.7	2023-11-03 08:17:38 -10:00
kvm/kvm_stat
laptop
leds
lib	perf tools changes for v6.7	2023-11-03 08:17:38 -10:00
memory-model
mm	tools/mm: update the usage output to be more organized	2023-10-18 14:34:19 -07:00
net/ynl	nfsd: regenerate user space parsers after ynl-gen changes	2023-11-06 09:03:46 +00:00
objtool	* Refactor and clean up TDX hypercall/module call infrastructure	2023-11-01 10:28:32 -10:00
pci
pcmcia
perf	perf tools changes for v6.7	2023-11-03 08:17:38 -10:00
power	Merge branch 'pm-tools'	2023-11-07 20:46:13 +01:00
rcu
scripts	tools/build: Fix -s detection code in tools/scripts/Makefile.include	2023-10-18 15:29:47 -07:00
spi
testing	selftests: net: verify fq per-band packet limit	2023-11-20 17:48:36 -08:00
thermal	tools/thermal: Remove unused 'mds' and 'nrhandler' variables	2023-10-15 23:40:10 +02:00
time
tracing	rtla: Fix uninitialized variable found	2023-10-30 19:00:12 +01:00
usb
verification	verification/dot2k: Delete duplicate imports	2023-10-30 16:59:12 +01:00
virtio	tools/virtio: Add dma sync api for virtio test	2023-10-16 05:32:23 -04:00
wmi
workqueue
Makefile