diff options
| author | Wang Nan <wangnan0@huawei.com> | 2016-11-26 08:03:26 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-11-29 16:09:41 +0100 |
| commit | 10931d2413478239bdceac5546cce85d7a497a4e (patch) | |
| tree | 4697e2b409904b420ec00e04d01a186a781da106 /tools | |
| parent | tools lib bpf: Add missing BPF functions (diff) | |
| download | linux-10931d2413478239bdceac5546cce85d7a497a4e.tar.xz linux-10931d2413478239bdceac5546cce85d7a497a4e.zip | |
tools lib bpf: Add private field for bpf_object
Similar to other classes defined in libbpf.h (map and program), allow
'object' class has its own private data.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Cc: He Kuang <hekuang@huawei.com>
Cc: Joe Stringer <joe@ovn.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/20161126070354.141764-3-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 23 | ||||
| -rw-r--r-- | tools/lib/bpf/libbpf.h | 5 |
2 files changed, 28 insertions, 0 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 96a2b2ff1212..866d5cdeffc7 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -229,6 +229,10 @@ struct bpf_object { * all objects. */ struct list_head list; + + void *priv; + bpf_object_clear_priv_t clear_priv; + char path[]; }; #define obj_elf_valid(o) ((o)->efile.elf) @@ -1229,6 +1233,9 @@ void bpf_object__close(struct bpf_object *obj) if (!obj) return; + if (obj->clear_priv) + obj->clear_priv(obj, obj->priv); + bpf_object__elf_finish(obj); bpf_object__unload(obj); @@ -1282,6 +1289,22 @@ unsigned int bpf_object__kversion(struct bpf_object *obj) return obj ? obj->kern_version : 0; } +int bpf_object__set_priv(struct bpf_object *obj, void *priv, + bpf_object_clear_priv_t clear_priv) +{ + if (obj->priv && obj->clear_priv) + obj->clear_priv(obj, obj->priv); + + obj->priv = priv; + obj->clear_priv = clear_priv; + return 0; +} + +void *bpf_object__priv(struct bpf_object *obj) +{ + return obj ? obj->priv : ERR_PTR(-EINVAL); +} + struct bpf_program * bpf_program__next(struct bpf_program *prev, struct bpf_object *obj) { diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index dd7a513efb10..0c0b0127e03e 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -79,6 +79,11 @@ struct bpf_object *bpf_object__next(struct bpf_object *prev); (pos) != NULL; \ (pos) = (tmp), (tmp) = bpf_object__next(tmp)) +typedef void (*bpf_object_clear_priv_t)(struct bpf_object *, void *); +int bpf_object__set_priv(struct bpf_object *obj, void *priv, + bpf_object_clear_priv_t clear_priv); +void *bpf_object__priv(struct bpf_object *prog); + /* Accessors of bpf_program. */ struct bpf_program; struct bpf_program *bpf_program__next(struct bpf_program *prog, |