A new helper is introduced to calculate offload map memory usage. But
currently the memory dynamically allocated in netdev dev_ops, like
nsim_map_update_elem, is not counted. Let's just put it aside now.
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Link: https://lore.kernel.org/r/20230305124615.12358-18-laoar.shao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr);
void bpf_map_offload_map_free(struct bpf_map *map);
+u64 bpf_map_offload_map_mem_usage(const struct bpf_map *map);
int bpf_prog_test_run_syscall(struct bpf_prog *prog,
const union bpf_attr *kattr,
union bpf_attr __user *uattr);
{
}
+static inline u64 bpf_map_offload_map_mem_usage(const struct bpf_map *map)
+{
+ return 0;
+}
+
static inline int bpf_prog_test_run_syscall(struct bpf_prog *prog,
const union bpf_attr *kattr,
union bpf_attr __user *uattr)
bpf_map_area_free(offmap);
}
+u64 bpf_map_offload_map_mem_usage(const struct bpf_map *map)
+{
+ /* The memory dynamically allocated in netdev dev_ops is not counted */
+ return sizeof(struct bpf_offloaded_map);
+}
+
int bpf_map_offload_lookup_elem(struct bpf_map *map, void *key, void *value)
{
struct bpf_offloaded_map *offmap = map_to_offmap(map);
.map_alloc = bpf_map_offload_map_alloc,
.map_free = bpf_map_offload_map_free,
.map_check_btf = map_check_no_btf,
+ .map_mem_usage = bpf_map_offload_map_mem_usage,
};
static struct bpf_map *find_and_alloc_map(union bpf_attr *attr)