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Previously, kfunc declarations in bpf_kfuncs.h (and others) used "user
facing" types for kfuncs prototypes while the actual kfunc definitions
used "kernel facing" types. More specifically: bpf_dynptr vs
bpf_dynptr_kern, __sk_buff vs sk_buff, and xdp_md vs xdp_buff.
It wasn't an issue before, as the verifier allows aliased types.
However, since we are now generating kfunc prototypes in vmlinux.h (in
addition to keeping bpf_kfuncs.h around), this conflict creates
compilation errors.
Fix this conflict by using "user facing" types in kfunc definitions.
This results in more casts, but otherwise has no additional runtime
cost.
Note, similar to
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| .. | ||
| enable.c | ||
| fsverity_private.h | ||
| hash_algs.c | ||
| init.c | ||
| Kconfig | ||
| Makefile | ||
| measure.c | ||
| open.c | ||
| read_metadata.c | ||
| signature.c | ||
| verify.c | ||