1 files changed, 43 insertions, 21 deletions

diff --git a/samples/bpf/sockex3_user.c b/samples/bpf/sockex3_user.c
index bbb1cd0666a9..4dbee7427d47 100644
--- a/samples/bpf/sockex3_user.c
+++ b/samples/bpf/sockex3_user.c
@@ -1,18 +1,13 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <stdio.h>
 #include <assert.h>
-#include <linux/bpf.h>
 #include <bpf/bpf.h>
-#include "bpf_load.h"
+#include <bpf/libbpf.h>
 #include "sock_example.h"
 #include <unistd.h>
 #include <arpa/inet.h>
 #include <sys/resource.h>
 
-#define PARSE_IP 3
-#define PARSE_IP_PROG_FD (prog_fd[0])
-#define PROG_ARRAY_FD (map_fd[0])
-
 struct flow_key_record {
 	__be32 src;
 	__be32 dst;
@@ -30,31 +25,55 @@ struct pair {
 
 int main(int argc, char **argv)
 {
+	int i, sock, key, fd, main_prog_fd, jmp_table_fd, hash_map_fd;
 	struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
+	struct bpf_program *prog;
+	struct bpf_object *obj;
 	char filename[256];
+	const char *title;
 	FILE *f;
-	int i, sock, err, id, key = PARSE_IP;
-	struct bpf_prog_info info = {};
-	uint32_t info_len = sizeof(info);
 
 	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
 	setrlimit(RLIMIT_MEMLOCK, &r);
 
-	if (load_bpf_file(filename)) {
-		printf("%s", bpf_log_buf);
-		return 1;
+	obj = bpf_object__open_file(filename, NULL);
+	if (libbpf_get_error(obj)) {
+		fprintf(stderr, "ERROR: opening BPF object file failed\n");
+		return 0;
+	}
+
+	/* load BPF program */
+	if (bpf_object__load(obj)) {
+		fprintf(stderr, "ERROR: loading BPF object file failed\n");
+		goto cleanup;
+	}
+
+	jmp_table_fd = bpf_object__find_map_fd_by_name(obj, "jmp_table");
+	hash_map_fd = bpf_object__find_map_fd_by_name(obj, "hash_map");
+	if (jmp_table_fd < 0 || hash_map_fd < 0) {
+		fprintf(stderr, "ERROR: finding a map in obj file failed\n");
+		goto cleanup;
 	}
 
-	/* Test fd array lookup which returns the id of the bpf_prog */
-	err = bpf_obj_get_info_by_fd(PARSE_IP_PROG_FD, &info, &info_len);
-	assert(!err);
-	err = bpf_map_lookup_elem(PROG_ARRAY_FD, &key, &id);
-	assert(!err);
-	assert(id == info.id);
+	bpf_object__for_each_program(prog, obj) {
+		fd = bpf_program__fd(prog);
+
+		title = bpf_program__title(prog, false);
+		if (sscanf(title, "socket/%d", &key) != 1) {
+			fprintf(stderr, "ERROR: finding prog failed\n");
+			goto cleanup;
+		}
+
+		if (key == 0)
+			main_prog_fd = fd;
+		else
+			bpf_map_update_elem(jmp_table_fd, &key, &fd, BPF_ANY);
+	}
 
 	sock = open_raw_sock("lo");
 
-	assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd[4],
+	/* attach BPF program to socket */
+	assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &main_prog_fd,
 			  sizeof(__u32)) == 0);
 
 	if (argc > 1)
@@ -69,8 +88,8 @@ int main(int argc, char **argv)
 
 		sleep(1);
 		printf("IP     src.port -> dst.port               bytes      packets\n");
-		while (bpf_map_get_next_key(map_fd[2], &key, &next_key) == 0) {
-			bpf_map_lookup_elem(map_fd[2], &next_key, &value);
+		while (bpf_map_get_next_key(hash_map_fd, &key, &next_key) == 0) {
+			bpf_map_lookup_elem(hash_map_fd, &next_key, &value);
 			printf("%s.%05d -> %s.%05d %12lld %12lld\n",
 			       inet_ntoa((struct in_addr){htonl(next_key.src)}),
 			       next_key.port16[0],
@@ -80,5 +99,8 @@ int main(int argc, char **argv)
 			key = next_key;
 		}
 	}
+
+cleanup:
+	bpf_object__close(obj);
 	return 0;
 }