Amit Cohen cad797ceee selftests: forwarding: devlink_lib: Wait for udev events after reloading ... [ Upstream commit f67a90a0c8 ] Lately, an additional locking was added by commit c0a40097f0 ("drivers: core: synchronize really_probe() and dev_uevent()"). The locking protects dev_uevent() calling. This function is used to send messages from the kernel to user space. Uevent messages notify user space about changes in device states, such as when a device is added, removed, or changed. These messages are used by udev (or other similar user-space tools) to apply device-specific rules. After reloading devlink instance, udev events should be processed. This locking causes a short delay of udev events handling. One example for useful udev rule is renaming ports. 'forwading.config' can be configured to use names after udev rules are applied. Some tests run devlink_reload() and immediately use the updated names. This worked before the above mentioned commit was pushed, but now the delay of uevent messages causes that devlink_reload() returns before udev events are handled and tests fail. Adjust devlink_reload() to not assume that udev events are already processed when devlink reload is done, instead, wait for udev events to ensure they are processed before returning from the function. Without this patch: TESTS='rif_mac_profile' ./resource_scale.sh TEST: 'rif_mac_profile' 4 [ OK ] sysctl: cannot stat /proc/sys/net/ipv6/conf/swp1/disable_ipv6: No such file or directory sysctl: cannot stat /proc/sys/net/ipv6/conf/swp1/disable_ipv6: No such file or directory sysctl: cannot stat /proc/sys/net/ipv6/conf/swp2/disable_ipv6: No such file or directory sysctl: cannot stat /proc/sys/net/ipv6/conf/swp2/disable_ipv6: No such file or directory Cannot find device "swp1" Cannot find device "swp2" TEST: setup_wait_dev (: Interface swp1 does not come up.) [FAIL] With this patch: $ TESTS='rif_mac_profile' ./resource_scale.sh TEST: 'rif_mac_profile' 4 [ OK ] TEST: 'rif_mac_profile' overflow 5 [ OK ] This is relevant not only for this test. Fixes: bc7cbb1e9f ("selftests: forwarding: Add devlink_lib.sh") Signed-off-by: Amit Cohen <amcohen@nvidia.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Link: https://patch.msgid.link/89367666e04b38a8993027f1526801ca327ab96a.1720709333.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-08-03 08:59:47 +02:00
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accounting
arch	tools headers arm64: Sync arm64's cputype.h with the kernel sources	2024-06-04 16:46:40 -03:00
bootconfig
bpf	bpftool: Mount bpffs when pinmaps path not under the bpffs	2024-08-03 08:59:42 +02:00
build
certs
cgroup	proc: rewrite stable_page_flags()	2024-04-25 20:56:15 -07:00
counter
crypto
debugging
firewire
firmware
gpio
hv	tools: hv: suppress the invalid warning for packed member alignment	2024-05-28 05:27:35 +00:00
iio
include	perf tools fixes for v6.10: 2nd batch	2024-06-09 09:04:51 -07:00
kvm/kvm_stat
laptop
leds
lib	libbpf: Skip base btf sanity checks	2024-08-03 08:59:40 +02:00
memory-model
mm
net/ynl	ynl: ensure exact-len value is resolved	2024-05-13 14:59:24 -07:00
objtool	x86/syscall: Mark exit[_group] syscall handlers __noreturn	2024-08-03 08:59:12 +02:00
pci
pcmcia
perf	perf dsos: When adding a dso into sorted dsos maintain the sort order	2024-07-07 22:26:29 -07:00
power	tools/power turbostat: Add local build_bug.h header for snapshot target	2024-06-27 23:53:27 -04:00
rcu
scripts
sound	ASoC: dapm-graph: new tool to visualize DAPM state	2024-04-21 09:58:17 +09:00
spi
testing	selftests: forwarding: devlink_lib: Wait for udev events after reloading	2024-08-03 08:59:47 +02:00
thermal
time
tracing	tools/latency-collector: Fix -Wformat-security compile warns	2024-05-23 10:46:01 -04:00
usb
verification
virtio
wmi
workqueue
writeback	writeback: add wb_monitor.py script to monitor writeback info on bdi	2024-05-05 17:53:51 -07:00
Makefile