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bpf: Add cookie to tracing bpf_link_info

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bpf_tramp_link includes cookie info, we can add it in bpf_link_info.

Signed-off-by: Tao Chen <chen.dylane@linux.dev>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20250606165818.3394397-1-chen.dylane@linux.dev
This commit is contained in:
Tao Chen 2025-06-07 00:58:14 +08:00 committed by Andrii Nakryiko
parent f3effef2e8
commit c7beb48344
3 changed files with 5 additions and 0 deletions
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2
include/uapi/linux/bpf.h
View File

@ -6665,6 +6665,8 @@ struct bpf_link_info {
__u32 attach_type;
__u32 target_obj_id; /* prog_id for PROG_EXT, otherwise btf object id */
__u32 target_btf_id; /* BTF type id inside the object */
__u32 :32;
__u64 cookie;
} tracing;
struct {
__u64 cgroup_id;

1
kernel/bpf/syscall.c
View File

@ -3416,6 +3416,7 @@ static int bpf_tracing_link_fill_link_info(const struct bpf_link *link,
container_of(link, struct bpf_tracing_link, link.link);
info->tracing.attach_type = tr_link->attach_type;
info->tracing.cookie = tr_link->link.cookie;
bpf_trampoline_unpack_key(tr_link->trampoline->key,
&info->tracing.target_obj_id,
&info->tracing.target_btf_id);

2
tools/include/uapi/linux/bpf.h
View File

@ -6665,6 +6665,8 @@ struct bpf_link_info {
__u32 attach_type;
__u32 target_obj_id; /* prog_id for PROG_EXT, otherwise btf object id */
__u32 target_btf_id; /* BTF type id inside the object */
__u32 :32;
__u64 cookie;
} tracing;
struct {
__u64 cgroup_id;