req_indirect
struct xbd_indirect *req_indirect; /* indirect page */
xbdreq->req_indirect = SLIST_FIRST(&sc->sc_indirect_head);
#define req_indirect u.req_rw.req_indirect
KASSERT(xbdreq->req_indirect != NULL); /* always as many as reqs */
req->indirect_grefs[0] = xbdreq->req_indirect->in_gntref;
reqseg = xbdreq->req_indirect->in_addr;
if (xbdreq->req_indirect) {
xbdreq->req_indirect->in_addr[seg].gref;
if (xbdreq->req_indirect) {
KASSERT(xengnt_status(xbdreq->req_indirect->in_gntref)
xbdreq->req_indirect, in_next);
xbdreq->req_indirect = NULL;