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[iproute2-next,3/3] bpf: Remove use of bpf_create_map_xattr

Message ID 20220228015840.1413-4-dsahern@kernel.org (mailing list archive)
State Accepted
Commit d9977eafa719c029fba8c14de5b46dc1c851c68f
Delegated to: David Ahern
Headers show
Series bpf: Work around libbpf deprecations | expand

Checks

Context Check Description
netdev/tree_selection success Not a local patch

Commit Message

David Ahern Feb. 28, 2022, 1:58 a.m. UTC 
bpf_create_map_xattr is deprecated in v0.7 in favor of bpf_map_create.
bpf_map_create and its bpf_map_create_opts are not available across the
range of v0.1 and up versions of libbpf, so change create_map to use
the bpf syscall directly.

Signed-off-by: David Ahern <dsahern@kernel.org>
---
 lib/bpf_libbpf.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)
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Patch

diff --git a/lib/bpf_libbpf.c b/lib/bpf_libbpf.c
index 921716aec8c6..f4f98caa1e58 100644
--- a/lib/bpf_libbpf.c
+++ b/lib/bpf_libbpf.c
@@ -54,18 +54,18 @@  static const char *get_bpf_program__section_name(const struct bpf_program *prog)
 static int create_map(const char *name, struct bpf_elf_map *map,
 		      __u32 ifindex, int inner_fd)
 {
-	struct bpf_create_map_attr map_attr = {};
-
-	map_attr.name = name;
-	map_attr.map_type = map->type;
-	map_attr.map_flags = map->flags;
-	map_attr.key_size = map->size_key;
-	map_attr.value_size = map->size_value;
-	map_attr.max_entries = map->max_elem;
-	map_attr.map_ifindex = ifindex;
-	map_attr.inner_map_fd = inner_fd;
-
-	return bpf_create_map_xattr(&map_attr);
+	union bpf_attr attr = {};
+
+	attr.map_type = map->type;
+	strlcpy(attr.map_name, name, sizeof(attr.map_name));
+	attr.map_flags = map->flags;
+	attr.key_size = map->size_key;
+	attr.value_size = map->size_value;
+	attr.max_entries = map->max_elem;
+	attr.map_ifindex = ifindex;
+	attr.inner_map_fd = inner_fd;
+
+	return bpf(BPF_MAP_CREATE, &attr, sizeof(attr));
 }
 
 static int create_map_in_map(struct bpf_object *obj, struct bpf_map *map,