chash_table
int chash_table_alloc(struct chash_table *table, u8 bits, u8 key_size,
void chash_table_free(struct chash_table *table);
int chash_table_alloc(struct chash_table *table, u8 bits, u8 key_size,
struct chash_table table;
void chash_table_free(struct chash_table *table)