Commit 2e89caf0 authored by Yafang Shao's avatar Yafang Shao Committed by Alexei Starovoitov
Browse files

bpf: reuseport_array memory usage 



A new helper is introduced to calculate reuseport_array memory usage.

The result as follows,
- before
14: reuseport_sockarray  name count_map  flags 0x0
        key 4B  value 8B  max_entries 65536  memlock 1048576B

- after
14: reuseport_sockarray  name count_map  flags 0x0
        key 4B  value 8B  max_entries 65536  memlock 524544B

Signed-off-by: default avatarYafang Shao <laoar.shao@gmail.com>
Link: https://lore.kernel.org/r/20230305124615.12358-7-laoar.shao@gmail.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent cbb9b606

kernel/bpf/reuseport_array.c

+8 −0
Original line number Diff line number Diff line
@@ -335,6 +335,13 @@ static int reuseport_array_get_next_key(struct bpf_map *map, void *key, 
	return 0;

}



static u64 reuseport_array_mem_usage(const struct bpf_map *map)

{

	struct reuseport_array *array;



	return struct_size(array, ptrs, map->max_entries);

}



BTF_ID_LIST_SINGLE(reuseport_array_map_btf_ids, struct, reuseport_array)

const struct bpf_map_ops reuseport_array_ops = {

	.map_meta_equal = bpf_map_meta_equal,
@@ -344,5 +351,6 @@ const struct bpf_map_ops reuseport_array_ops = { 
	.map_lookup_elem = reuseport_array_lookup_elem,

	.map_get_next_key = reuseport_array_get_next_key,

	.map_delete_elem = reuseport_array_delete_elem,

	.map_mem_usage = reuseport_array_mem_usage,

	.map_btf_id = &reuseport_array_map_btf_ids[0],

};