Re: [PATCH v4 bpf-next 0/5] bpf: Add support for XDP programs in DEVMAP entries

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On 6/1/20 3:12 PM, Alexei Starovoitov wrote:
> In patch 5 I had to fix:
> /data/users/ast/net-next/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c:
> In function ‘test_neg_xdp_devmap_helpers’:
> /data/users/ast/net-next/tools/testing/selftests/bpf/test_progs.h:106:3:
> warning: ‘duration’ may be used uninitialized in this function
> [-Wmaybe-uninitialized]
>   106 |   fprintf(stdout, "%s:PASS:%s %d nsec\n",   \
>       |   ^~~~~~~
> /data/users/ast/net-next/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c:79:8:
> note: ‘duration’ was declared here
>    79 |  __u32 duration;

What compiler version? it compiles cleanly with ubuntu 20.04 and gcc
9.3. The other prog_tests are inconsistent with initializing it.

> 
> and that selftest is imo too primitive.

I focused the selftests on API changes introduced by this set - new
attach type, valid accesses to egress_ifindex and not allowing devmap
programs with xdp generic.

> It's only loading progs and not executing them.
> Could you please add prog_test_run to it?
> 

I will look into it.



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