tr_mac_frm
struct tr_mac_frm *mh;
mh = (struct tr_mac_frm *)mp->b_rptr;
if (MBLKL(mp) < sizeof (struct tr_mac_frm) +
mh = (struct tr_mac_frm *)mp->b_rptr; /* to look at RIF */
hdrlen = sizeof (struct tr_mac_frm);
nlen = sizeof (struct tr_mac_frm) + LLC_HDR1_LEN +
nlen = sizeof (struct tr_mac_frm) + LLC_HDR1_LEN +