soft_state_walk_t
soft_state_walk_t *sst;
sst = mdb_zalloc(sizeof (soft_state_walk_t), UM_SLEEP|UM_GC);
soft_state_walk_t *sst = (soft_state_walk_t *)wsp->walk_data;
soft_state_walk_t *sst = (soft_state_walk_t *)wsp->walk_data;