On 8/28/20 7:19 AM, Yonghong Song wrote:
bpf_link_info.iter is used by link_query to return
bpf_iter_link_info to user space. Fields may be different
,e.g., map_fd vs. map_id, so we cannot reuse
the exact structure. But make them similar, e.g.,
struct bpf_link_info {
/* common fields */
union {
struct { ... } raw_tracepoint;
struct { ... } tracing;
...
struct {
/* common fields for iter */
union {
struct {
__u32 map_id;
} map;
/* other structs for other targets */
};
};
};
};
so the structure is extensible the same way as
bpf_iter_link_info.
Fixes: 6b0a249a301e ("bpf: Implement link_query for bpf iterators")
Acked-by: Andrii Nakryiko <andriin@xxxxxx>
Signed-off-by: Yonghong Song <yhs@xxxxxx>
Applied, thanks!
