> -----Original Message----- > From: Martin KaFai Lau <kafai@xxxxxx> > Sent: Wednesday, December 29, 2021 1:06 PM > To: Tyler Wear <twear@xxxxxxxxxxx> > Cc: Yonghong Song <yhs@xxxxxx>; Tyler Wear (QUIC) <quic_twear@xxxxxxxxxxx>; netdev@xxxxxxxxxxxxxxx; bpf@xxxxxxxxxxxxxxx; > maze@xxxxxxxxxx > Subject: Re: [PATCH] Add skb_store_bytes() for BPF_PROG_TYPE_CGROUP_SKB > > WARNING: This email originated from outside of Qualcomm. Please be wary of any links or attachments, and do not enable macros. > > On Wed, Dec 29, 2021 at 06:29:05PM +0000, Tyler Wear wrote: > > Unable to run any bpf tests do to errors below. These occur with and without the new patch. Is this a known issue? > > Is the new test case required since bpf_skb_store_bytes() is already a tested function for other prog types? > > > > libbpf: failed to find BTF for extern 'bpf_testmod_invalid_mod_kfunc' > > [18] section: -2 > > Error: failed to open BPF object file: No such file or directory > > libbpf: failed to find BTF info for global/extern symbol 'my_tid' > > Error: failed to link > > '/local/mnt/workspace/linux-stable/tools/testing/selftests/bpf/linked_ > > funcs1.o': Unknown error -2 (-2) > > libbpf: failed to find BTF for extern 'bpf_kfunc_call_test1' [27] > > section: -2 > tools/testing/selftests/bpf/README.rst has details on these. > > Ensure the llvm and pahole are up to date. > Also take a look at the "Testing patches" and "LLVM" section in Documentation/bpf/bpf_devel_QA.rst. This will also require adding the l3/l4_ csum_replace() api's then. Adding the csum_replace() to a cgroup test case results in the below error during bpf program validation: "BPF_LD_[ABS|IND] instructions not allowed for this program type" Is there something else that needs to be added? Or would it be better to create the function just for ds_field?
