pool_put_index (tsm->list_pool, u->sessions_per_user_list_head_index);
pool_put (tsm->users, u);
clib_bihash_add_del_8_8 (&tsm->user_hash, &kv, 0);
pool_put_index (tsm->list_pool, u->sessions_per_user_list_head_index);
pool_put (tsm->users, u);
clib_bihash_add_del_8_8 (&tsm->user_hash, &kv, 0);