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| author |   Joanne Koong <joannekoong@fb.com> | 2021-10-27 16:45:01 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2021-10-28 13:22:49 -0700 |
| commit | 47512102cde2d252d7b984d9675cfd3420b48ad9 (patch) | |
| tree | b203c0c65d00e9b4df291253957f0465c3589f13 /tools/lib/bpf/gen_loader.c | |
| parent | bpf: Add bloom filter map implementation (diff) | |
| download | linux-dev-47512102cde2d252d7b984d9675cfd3420b48ad9.tar.xz linux-dev-47512102cde2d252d7b984d9675cfd3420b48ad9.zip | |
libbpf: Add "map_extra" as a per-map-type extra flag
This patch adds the libbpf infrastructure for supporting a
per-map-type "map_extra" field, whose definition will be
idiosyncratic depending on map type.
For example, for the bloom filter map, the lower 4 bits of
map_extra is used to denote the number of hash functions.
Please note that until libbpf 1.0 is here, the
"bpf_create_map_params" struct is used as a temporary
means for propagating the map_extra field to the kernel.
Signed-off-by: Joanne Koong <joannekoong@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211027234504.30744-3-joannekoong@fb.com
Diffstat (limited to 'tools/lib/bpf/gen_loader.c')
| -rw-r--r-- | tools/lib/bpf/gen_loader.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/lib/bpf/gen_loader.c b/tools/lib/bpf/gen_loader.c index 937bfc7db41e..e552484ae4a4 100644 --- a/tools/lib/bpf/gen_loader.c +++ b/tools/lib/bpf/gen_loader.c @@ -431,7 +431,7 @@ void bpf_gen__load_btf(struct bpf_gen *gen, const void *btf_raw_data, } void bpf_gen__map_create(struct bpf_gen *gen, - struct bpf_create_map_attr *map_attr, int map_idx) + struct bpf_create_map_params *map_attr, int map_idx) { int attr_size = offsetofend(union bpf_attr, btf_vmlinux_value_type_id); bool close_inner_map_fd = false; @@ -443,6 +443,7 @@ void bpf_gen__map_create(struct bpf_gen *gen, attr.key_size = map_attr->key_size; attr.value_size = map_attr->value_size; attr.map_flags = map_attr->map_flags; + attr.map_extra = map_attr->map_extra; memcpy(attr.map_name, map_attr->name, min((unsigned)strlen(map_attr->name), BPF_OBJ_NAME_LEN - 1)); attr.numa_node = map_attr->numa_node; |