bsd/net/if_loop.c

123 		    &((struct loopback_header *)_m->m_pkthdr.header)->protocol,\
146 struct	loopback_header {
216 	struct loopback_header *header =
217 	    (struct loopback_header *)(void *)frame_header;
236 	struct loopback_header  *header;
238 	M_PREPEND(*m, sizeof (struct loopback_header), M_WAITOK);
245 	*prepend_len = sizeof (struct loopback_header);
249 	header = mtod(*m, struct loopback_header *);
305 		m_adj(m, sizeof (struct loopback_header));
354 		m_adj(m, sizeof (struct loopback_header));
675 	ifnet_set_hdrlen(lo_ifp, sizeof (struct loopback_header));