Revert "sock/udp: work around gnrc_sock_recv() returning early timeout"

[maribu]

Contribution description

This reverts commit e3d0068, which added a work around for two bugs:

• ztimer triggering too early (fixed in sys/ztimer: fix re-scheduling of timers #20924)
• gnrc_sock_recv() returning when an old "timeout" message is still in the message queue (fixed in sys/ztimer: implement ztimer_mbox_get_timeout() and use it to fix race in gnrc_sock_recv() #21113)

With those bugs fixed, the work around should not longer be needed.

Testing procedure

@benpicco has a test setup with dozen of native instances.

Issues/PRs references

#19965

[riot-ci]

Murdock results

✔️ PASSED

c562b6c Revert "sock/udp: work around gnrc_sock_recv() returning early timeout"

Success	Failures	Total	Runtime
10271	0	10271	18m:14s

Artifacts

• Documentation preview

[Enoch247]

I am assuming that it is intentional that you did not revert the other commit (c4634f5) in the referenced PR, but would like confirmation that it wasn't forgotten.

[maribu]

I can later run make generate-Makefile.ci in examples/gcoap, but I don't have much hope that that this is enough to get those boards back, as .text has also increased in the meantime due to other changes.

[Enoch247]

I assumed something along those lines. If you don't get to it today, I will likely attempt to generate the makefile tonight.

[Enoch247]

I managed to get the Makefile generator going. It's now running on this branch. I'll check the result in the morning.

[MrKevinWeiss]

ping @Enoch247 any update, I wouldn't mind getting this in for the release?

[Enoch247]

I ran make generate-Makefile.ci in examples/gcoap. As suspected, the two boards (saml10-xpro and saml11-xpro) still have insufficient memory after this patch will be applied.

My test also showed that atxmega-a3bu-xplained has insufficient memory to build this branch, but re-running it on the branche's parent (ade999a) shows that condition existed before this branch. So maybe that is an artifact of my setup or a problem caused elsewhere.