diff --git a/include/linux/bpf.h b/include/linux/bpf.h index fd95f2efe5f3293d6363c7d4b493573dc5ed7db8..16f6beef5cad7ac492398aef2b77740f5bfb84f5 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -34,6 +34,7 @@ struct bpf_map_ops { void (*map_free)(struct bpf_map *map); int (*map_get_next_key)(struct bpf_map *map, void *key, void *next_key); void (*map_release_uref)(struct bpf_map *map); + void *(*map_lookup_elem_sys_only)(struct bpf_map *map, void *key); /* funcs callable from userspace and from eBPF programs */ void *(*map_lookup_elem)(struct bpf_map *map, void *key); diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 1cb54b5aeb1772ed584169b67d19d60631af4778..bec08c969bf51eb4f81a45e21898c1f06f593f15 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -721,7 +721,10 @@ static int map_lookup_elem(union bpf_attr *attr) err = bpf_fd_reuseport_array_lookup_elem(map, key, value); } else { rcu_read_lock(); - ptr = map->ops->map_lookup_elem(map, key); + if (map->ops->map_lookup_elem_sys_only) + ptr = map->ops->map_lookup_elem_sys_only(map, key); + else + ptr = map->ops->map_lookup_elem(map, key); if (IS_ERR(ptr)) { err = PTR_ERR(ptr); } else if (!ptr) {