DC_SFRAME_LEN
bzero(sp, DC_SFRAME_LEN);
sframe->dc_ctl = htole32(DC_SFRAME_LEN | DC_TXCTL_SETUP |
bzero(sp, DC_SFRAME_LEN);
sframe->dc_ctl = htole32(DC_SFRAME_LEN | DC_TXCTL_SETUP |
u_int32_t dc_sbuf[DC_SFRAME_LEN/sizeof(u_int32_t)];