Add kfunc scalar argument types, classify them in get_kfunc_arg_type()
along side with pointer arguments and move scalar type verification
into the main switch in check_kfunc_args(). This keeps BTF-based
classification separate from register validation for every argument,
paving the way for generating the kfunc argument prototype at add-call
time. No functional change intended.
KF_ARG_MEM_SIZE and KF_ARG_CONST_MEM_SIZE now are reachable. Therefore,
remove the fallthrough from KF_ARG_PTR_TO_MEM case and adjust the
register indexing.
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Reviewed-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20260801074633.1595644-18-ameryhung@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
1690dcf27c