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Daniel Borkmann authored
Currently, when the verifier checks calls in check_call() function, we call check_func_arg() for all 5 arguments e.g. to make sure expected types are correct. In some cases, we collect meta data (here: map pointer) to perform additional checks such as checking stack boundary on key/value sizes for subsequent arguments. As we're going to extend the meta data, add a generic struct bpf_call_arg_meta that we can use for passing into check_func_arg(). Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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