bpftool: recognize scheduler programs

maillist inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5F6X6
CVE: NA

Reference: https://lore.kernel.org/all/20210916162451.709260-1-guro@fb.com/

-------------------

Teach bpftool to recognize scheduler bpf programs.
Signed-off-by: NRoman Gushchin <guro@fb.com>
Signed-off-by: NChen Hui <judy.chenhui@huawei.com>
Signed-off-by: NRen Zhijie <renzhijie2@huawei.com>

tools/bpf/bpftool/common.c

@@ -66,6 +66,7 @@ const char * const attach_type_name[__MAX_BPF_ATTACH_TYPE] = {
 	[BPF_MODIFY_RETURN]		= "mod_ret",
 	[BPF_LSM_MAC]			= "lsm_mac",
 	[BPF_SK_LOOKUP]			= "sk_lookup",
+	[BPF_SCHED]			= "sched",
 };
 
 void p_err(const char *fmt, ...)

tools/bpf/bpftool/prog.c

@@ -64,6 +64,7 @@ const char * const prog_type_name[] = {
 	[BPF_PROG_TYPE_EXT]			= "ext",
 	[BPF_PROG_TYPE_LSM]			= "lsm",
 	[BPF_PROG_TYPE_SK_LOOKUP]		= "sk_lookup",
+	[BPF_PROG_TYPE_SCHED]			= "sched",
 };
 
 const size_t prog_type_name_size = ARRAY_SIZE(prog_type_name);

tools/lib/bpf/bpf.c

@@ -236,7 +236,8 @@ int bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr,
 	    attr.prog_type == BPF_PROG_TYPE_LSM) {
 		attr.attach_btf_id = load_attr->attach_btf_id;
 	} else if (attr.prog_type == BPF_PROG_TYPE_TRACING ||
-		   attr.prog_type == BPF_PROG_TYPE_EXT) {
+		   attr.prog_type == BPF_PROG_TYPE_EXT ||
+		   attr.prog_type == BPF_PROG_TYPE_SCHED) {
 		attr.attach_btf_id = load_attr->attach_btf_id;
 		attr.attach_prog_fd = load_attr->attach_prog_fd;
 	} else {

tools/lib/bpf/libbpf.c

@@ -6707,7 +6707,8 @@ load_program(struct bpf_program *prog, struct bpf_insn *insns, int insns_cnt,
 	    prog->type == BPF_PROG_TYPE_LSM) {
 		load_attr.attach_btf_id = prog->attach_btf_id;
 	} else if (prog->type == BPF_PROG_TYPE_TRACING ||
-		   prog->type == BPF_PROG_TYPE_EXT) {
+		   prog->type == BPF_PROG_TYPE_EXT ||
+		   prog->type == BPF_PROG_TYPE_SCHED) {
 		load_attr.attach_prog_fd = prog->attach_prog_fd;
 		load_attr.attach_btf_id = prog->attach_btf_id;
 	} else {