bpf_link->destroy() isn't used by any code, so remove it. Instead, add ability
to override deallocation procedure, with default doing plain free(link). This
is necessary for cases when we want to "subclass" struct bpf_link to keep
extra information, as is the case in the next patch adding struct
bpf_link_perf.
Cc: Rafael David Tinoco <rafaeldtinoco@xxxxxxxxx>
Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
---
tools/lib/bpf/libbpf.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index a53ca29b44ab..f944342c0152 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -10070,7 +10070,7 @@ int bpf_prog_load_xattr(const struct bpf_prog_load_attr *attr,
struct bpf_link {
int (*detach)(struct bpf_link *link);
- int (*destroy)(struct bpf_link *link);
+ void (*dealloc)(struct bpf_link *link);
char *pin_path; /* NULL, if not pinned */
int fd; /* hook FD, -1 if not applicable */
bool disconnected;
@@ -10109,11 +10109,12 @@ int bpf_link__destroy(struct bpf_link *link)
if (!link->disconnected && link->detach)
err = link->detach(link);
- if (link->destroy)
- link->destroy(link);
if (link->pin_path)
free(link->pin_path);
- free(link);
+ if (link->dealloc)
+ link->dealloc(link);
+ else
+ free(link);
return libbpf_err(err);
}
--
2.30.2
