in_node
offsetof(ieee80211_node_t, in_node));
t_traverse_delete(node_t **in_node, uint8_t pos, key_t id, uint32_t key,
node_t *c_node = *in_node;
struct in_node *node = mp->ind_node;
struct in_node;
struct in_node *devi_in_node; /* pointer to devinfo node's in_node_t */
struct in_node *in_child; /* children of this node */
struct in_node *in_sibling; /* "peers" of this node */
struct in_node *in_parent; /* parent of this node */
struct in_node *ind_node; /* node that these hang on */
list_node_t in_node; /* element of nt->nt_node */