550 	struct bstp_tbpdu tpdu;  in bstp_input()  local
563 	if (len < sizeof(tpdu)) {  in bstp_input()
572 	if ((unsigned int)m->m_len < sizeof(tpdu) &&  in bstp_input()
573 	    (m = m_pullup(m, sizeof(tpdu))) == NULL) {  in bstp_input()
577 	memcpy(&tpdu, mtod(m, caddr_t), sizeof(tpdu));  in bstp_input()
580 	if (tpdu.tbu_dsap != LLC_8021D_LSAP ||  in bstp_input()
581 	    tpdu.tbu_ssap != LLC_8021D_LSAP ||  in bstp_input()
582 	    tpdu.tbu_ctl != LLC_UI) {  in bstp_input()
585 	if (tpdu.tbu_protoid != BSTP_PROTO_ID) {  in bstp_input()
593 	if (tpdu.tbu_protover > BSTP_PROTO_MAX) {  in bstp_input()
594 		tpdu.tbu_protover = BSTP_PROTO_MAX;  in bstp_input()
597 	if (tpdu.tbu_protover != bp->bp_protover) {  in bstp_input()
603 			bstp_set_port_proto(bp, tpdu.tbu_protover);  in bstp_input()
614 	switch (tpdu.tbu_protover) {  in bstp_input()
616 		bstp_received_stp(bs, bp, &m, &tpdu);  in bstp_input()
620 		bstp_received_rstp(bs, bp, &m, &tpdu);  in bstp_input()
633     struct mbuf **mp, struct bstp_tbpdu *tpdu)  in bstp_received_stp()  argument
639 	switch (tpdu->tbu_bpdutype) {  in bstp_received_stp()
641 		tu.tu_message_type = tpdu->tbu_bpdutype;  in bstp_received_stp()
659     struct mbuf **mp, struct bstp_tbpdu *tpdu)  in bstp_received_rstp()  argument
664 	if (tpdu->tbu_bpdutype != BSTP_MSGTYPE_RSTP) {  in bstp_received_rstp()