Re: [PATCH bpf v2 0/7] selftests/bpf: Restore test_offload.py to working order

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Jakub Kicinski <kuba@xxxxxxxxxx> writes:

> On Tue, 08 Dec 2020 15:18:31 +0100 Toke Høiland-Jørgensen wrote:
>> Toke Høiland-Jørgensen <toke@xxxxxxxxxx> writes:
>> 
>> > This series restores the test_offload.py selftest to working order. It seems a
>> > number of subtle behavioural changes have crept into various subsystems which
>> > broke test_offload.py in a number of ways. Most of these are fairly benign
>> > changes where small adjustments to the test script seems to be the best fix, but
>> > one is an actual kernel bug that I've observed in the wild caused by a bad
>> > interaction between xdp_attachment_flags_ok() and the rework of XDP program
>> > handling in the core netdev code.
>> >
>> > Patch 1 fixes the bug by removing xdp_attachment_flags_ok(), and the reminder of
>> > the patches are adjustments to test_offload.py, including a new feature for
>> > netdevsim to force a BPF verification fail. Please see the individual patches
>> > for details.
>> >
>> > Changelog:
>> >
>> > v2:
>> > - Replace xdp_attachment_flags_ok() with a check in dev_xdp_attach()
>> > - Better packing of struct nsim_dev  
>> 
>> Any feedback on v2? Would be great to get it merged before the final
>> 5.10 release :)
>
> LGTM but if my opinion mattered this could would not have been changed
> in the first place :)

Heh, right. Well I, for one, value your input, so thanks for taking a
look :)

-Toke





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