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| author | Mauricio Vasquez B <mauricio.vasquez@polito.it> | 2018-10-18 15:16:20 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2018-10-19 13:24:31 -0700 |
| commit | 2ea864c58f19bf70a0e2415f9f1c53814e07f1b4 (patch) | |
| tree | d0de5b3fcc6a4b37ebeb4fc56b0196895cdbc023 /include/linux/bpf.h | |
| parent | c9d29f4658a5a6d2c2ba2afeb20ff763fc6286f9 (diff) | |
| download | lwn-2ea864c58f19bf70a0e2415f9f1c53814e07f1b4.tar.gz lwn-2ea864c58f19bf70a0e2415f9f1c53814e07f1b4.zip | |
bpf/verifier: add ARG_PTR_TO_UNINIT_MAP_VALUE
ARG_PTR_TO_UNINIT_MAP_VALUE argument is a pointer to a memory zone
used to save the value of a map. Basically the same as
ARG_PTR_TO_UNINIT_MEM, but the size has not be passed as an extra
argument.
This will be used in the following patch that implements some new
helpers that receive a pointer to be filled with a map value.
Signed-off-by: Mauricio Vasquez B <mauricio.vasquez@polito.it>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux/bpf.h')
| -rw-r--r-- | include/linux/bpf.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index e60fff48288b..0f8b863e0229 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -138,6 +138,7 @@ enum bpf_arg_type { ARG_CONST_MAP_PTR, /* const argument used as pointer to bpf_map */ ARG_PTR_TO_MAP_KEY, /* pointer to stack used as map key */ ARG_PTR_TO_MAP_VALUE, /* pointer to stack used as map value */ + ARG_PTR_TO_UNINIT_MAP_VALUE, /* pointer to valid memory used to store a map value */ /* the following constraints used to prototype bpf_memcmp() and other * functions that access data on eBPF program stack |