tools: libbpf: add a correctly named define for map iteration

For historical reasons the helper to loop over maps in an object
is called bpf_map__for_each while it really should be called
bpf_object__for_each_map.  Rename and add a correctly named
define for backward compatibility.

Switch all in-tree users to the correct name (Quentin).

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

tools/bpf/bpftool/prog.c

@@ -1053,7 +1053,7 @@ static int load_with_options(int argc, char **argv, bool first_prog_only)
 	j = 0;
 	while (j < old_map_fds && map_replace[j].name) {
 		i = 0;
-		bpf_map__for_each(map, obj) {
+		bpf_object__for_each_map(map, obj) {
 			if (!strcmp(bpf_map__name(map), map_replace[j].name)) {
 				map_replace[j].idx = i;
 				break;
@@ -1074,7 +1074,7 @@ static int load_with_options(int argc, char **argv, bool first_prog_only)
 	/* Set ifindex and name reuse */
 	j = 0;
 	idx = 0;
-	bpf_map__for_each(map, obj) {
+	bpf_object__for_each_map(map, obj) {
 		if (!bpf_map__is_offload_neutral(map))
 			bpf_map__set_ifindex(map, ifindex);
 

tools/lib/bpf/libbpf.c

@@ -2100,7 +2100,7 @@ int bpf_object__pin_maps(struct bpf_object *obj, const char *path)
 	if (err)
 		return err;
 
-	bpf_map__for_each(map, obj) {
+	bpf_object__for_each_map(map, obj) {
 		char buf[PATH_MAX];
 		int len;
 
@@ -2147,7 +2147,7 @@ int bpf_object__unpin_maps(struct bpf_object *obj, const char *path)
 	if (!obj)
 		return -ENOENT;
 
-	bpf_map__for_each(map, obj) {
+	bpf_object__for_each_map(map, obj) {
 		char buf[PATH_MAX];
 		int len;
 
@@ -2835,7 +2835,7 @@ bpf_object__find_map_by_name(struct bpf_object *obj, const char *name)
 {
 	struct bpf_map *pos;
 
-	bpf_map__for_each(pos, obj) {
+	bpf_object__for_each_map(pos, obj) {
 		if (pos->name && !strcmp(pos->name, name))
 			return pos;
 	}
@@ -2928,7 +2928,7 @@ int bpf_prog_load_xattr(const struct bpf_prog_load_attr *attr,
 			first_prog = prog;
 	}
 
-	bpf_map__for_each(map, obj) {
+	bpf_object__for_each_map(map, obj) {
 		if (!bpf_map__is_offload_neutral(map))
 			map->map_ifindex = attr->ifindex;
 	}

tools/lib/bpf/libbpf.h

@@ -278,10 +278,11 @@ bpf_object__find_map_by_offset(struct bpf_object *obj, size_t offset);
 
 LIBBPF_API struct bpf_map *
 bpf_map__next(struct bpf_map *map, struct bpf_object *obj);
-#define bpf_map__for_each(pos, obj)		\
+#define bpf_object__for_each_map(pos, obj)		\
 	for ((pos) = bpf_map__next(NULL, (obj));	\
 	     (pos) != NULL;				\
 	     (pos) = bpf_map__next((pos), (obj)))
+#define bpf_map__for_each bpf_object__for_each_map
 
 LIBBPF_API struct bpf_map *
 bpf_map__prev(struct bpf_map *map, struct bpf_object *obj);

tools/perf/util/bpf-loader.c

@@ -1489,7 +1489,7 @@ apply_obj_config_object(struct bpf_object *obj)
 	struct bpf_map *map;
 	int err;
 
-	bpf_map__for_each(map, obj) {
+	bpf_object__for_each_map(map, obj) {
 		err = apply_obj_config_map(map);
 		if (err)
 			return err;
@@ -1513,7 +1513,7 @@ int bpf__apply_obj_config(void)
 
 #define bpf__for_each_map(pos, obj, objtmp)	\
 	bpf_object__for_each_safe(obj, objtmp)	\
-		bpf_map__for_each(pos, obj)
+		bpf_object__for_each_map(pos, obj)
 
 #define bpf__for_each_map_named(pos, obj, objtmp, name)	\
 	bpf__for_each_map(pos, obj, objtmp) 		\

tools/testing/selftests/bpf/test_libbpf_open.c

@@ -67,7 +67,7 @@ int test_walk_maps(struct bpf_object *obj, bool verbose)
 	struct bpf_map *map;
 	int cnt = 0;
 
-	bpf_map__for_each(map, obj) {
+	bpf_object__for_each_map(map, obj) {
 		cnt++;
 		if (verbose)
 			printf("Map (count:%d) name: %s\n", cnt,