esiop_cbd
struct esiop_cbd *newcbd;
newcbd = malloc(sizeof(struct esiop_cbd), M_DEVBUF, M_NOWAIT|M_ZERO);
struct esiop_cbd *esiop_cbdp; /* pointer to our siop_cbd */
TAILQ_ENTRY (esiop_cbd) next;
TAILQ_HEAD(cbd_list, esiop_cbd);