From 1b2b234b1318afb3775d4c6624fd5a96558f19df Mon Sep 17 00:00:00 2001 From: Roman Gushchin Date: Mon, 10 Dec 2018 15:43:00 -0800 Subject: bpf: pass struct btf pointer to the map_check_btf() callback If key_type or value_type are of non-trivial data types (e.g. structure or typedef), it's not possible to check them without the additional information, which can't be obtained without a pointer to the btf structure. So, let's pass btf pointer to the map_check_btf() callbacks. Signed-off-by: Roman Gushchin Cc: Alexei Starovoitov Cc: Daniel Borkmann Acked-by: Martin KaFai Lau Signed-off-by: Daniel Borkmann Signed-off-by: Alexei Starovoitov --- include/linux/bpf.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 0c992b86eb2c..e734f163bd0b 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -23,6 +23,7 @@ struct bpf_prog; struct bpf_map; struct sock; struct seq_file; +struct btf; struct btf_type; /* map is generic key/value storage optionally accesible by eBPF programs */ @@ -52,6 +53,7 @@ struct bpf_map_ops { void (*map_seq_show_elem)(struct bpf_map *map, void *key, struct seq_file *m); int (*map_check_btf)(const struct bpf_map *map, + const struct btf *btf, const struct btf_type *key_type, const struct btf_type *value_type); }; @@ -126,6 +128,7 @@ static inline bool bpf_map_support_seq_show(const struct bpf_map *map) } int map_check_no_btf(const struct bpf_map *map, + const struct btf *btf, const struct btf_type *key_type, const struct btf_type *value_type); -- cgit v1.2.3-71-gd317