ips_scb
static void ipsintr_blocking(ips_ha_t *, struct ips_scb *);
static void ipsintr_done(ips_ha_t *, struct ips_scb *);
struct ips_scb *scbs; /* Array of all CCBS */
struct ips_scb *scb_freelist; /* SCB free list */
typedef void (*ips_scb_callback) (ips_ha_t *, struct ips_scb *);
struct ips_scb *q_next;
struct ips_scb *q_next;
struct ips_scb *head;
struct ips_scb *tail;
int (*issue)(struct ips_ha *, struct ips_scb *);