Commit c7beb483 authored by Tao Chen's avatar Tao Chen Committed by Andrii Nakryiko
Browse files

bpf: Add cookie to tracing bpf_link_info 



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

Signed-off-by: default avatarTao Chen <chen.dylane@linux.dev>
Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20250606165818.3394397-1-chen.dylane@linux.dev
parent f3effef2

include/uapi/linux/bpf.h

+2 −0
Original line number Diff line number Diff line
@@ -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;

kernel/bpf/syscall.c

+1 −0
Original line number Diff line number Diff line
@@ -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);

tools/include/uapi/linux/bpf.h

+2 −0
Original line number Diff line number Diff line
@@ -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;