Introduce a libbpf API bpf_program__attach_sk_msg() which allows
user to get a bpf_link. The API makes auto-deletion easier and
also allows user space application easier as link based APIs
are used for all programs.
Signed-off-by: Yonghong Song <yonghong.song@xxxxxxxxx>
---
tools/lib/bpf/libbpf.c | 8 ++++++++
tools/lib/bpf/libbpf.h | 3 +++
tools/lib/bpf/libbpf.map | 1 +
3 files changed, 12 insertions(+)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 97b573516675..b3982bb3f979 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -149,6 +149,7 @@ static const char * const link_type_name[] = {
[BPF_LINK_TYPE_TCX] = "tcx",
[BPF_LINK_TYPE_UPROBE_MULTI] = "uprobe_multi",
[BPF_LINK_TYPE_NETKIT] = "netkit",
+ [BPF_LINK_TYPE_SK_MSG] = "sk_msg",
};
static const char * const map_type_name[] = {
@@ -12280,6 +12281,13 @@ bpf_program__attach_netkit(const struct bpf_program *prog, int ifindex,
return bpf_program_attach_fd(prog, ifindex, "netkit", &link_create_opts);
}
+struct bpf_link *
+bpf_program__attach_sk_msg(const struct bpf_program *prog, int map_fd,
+ enum bpf_attach_type attach_type)
+{
+ return __bpf_program_attach_fd(prog, map_fd, attach_type, "sk_msg", NULL);
+}
+
struct bpf_link *bpf_program__attach_freplace(const struct bpf_program *prog,
int target_fd,
const char *attach_func_name)
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index 5723cbbfcc41..c8448f05e8d6 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -786,6 +786,9 @@ bpf_program__attach_netns(const struct bpf_program *prog, int netns_fd);
LIBBPF_API struct bpf_link *
bpf_program__attach_xdp(const struct bpf_program *prog, int ifindex);
LIBBPF_API struct bpf_link *
+bpf_program__attach_sk_msg(const struct bpf_program *prog, int map_fd,
+ enum bpf_attach_type attach_type);
+LIBBPF_API struct bpf_link *
bpf_program__attach_freplace(const struct bpf_program *prog,
int target_fd, const char *attach_func_name);
diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map
index 86804fd90dd1..c59986c6dbc5 100644
--- a/tools/lib/bpf/libbpf.map
+++ b/tools/lib/bpf/libbpf.map
@@ -410,6 +410,7 @@ LIBBPF_1.3.0 {
LIBBPF_1.4.0 {
global:
+ bpf_program__attach_sk_msg;
bpf_token_create;
btf__new_split;
btf_ext__raw_data;
--
2.43.0
