568 sctp_add_proto_hdr(sctp_t *sctp, sctp_faddr_t *fp, mblk_t *mp, int sacklen,  in sctp_add_proto_hdr()  argument
608 	    (sctps->sctps_wroff_xtra + hdrlen + sacklen) || DB_REF(mp) > 2) {  in sctp_add_proto_hdr()
616 		nmp = allocb(sctps->sctps_wroff_xtra + hdrlen + sacklen,  in sctp_add_proto_hdr()
624 		nmp->b_wptr = nmp->b_rptr + hdrlen + sacklen;  in sctp_add_proto_hdr()
628 		mp->b_rptr -= (hdrlen + sacklen);  in sctp_add_proto_hdr()
631 	if (sacklen) {  in sctp_add_proto_hdr()
632 		sctp_fill_sack(sctp, mp->b_rptr + hdrlen, sacklen);  in sctp_add_proto_hdr()
997 	int32_t			sacklen;  in sctp_output()  local
1013 		sacklen = 0;  in sctp_output()
1016 		sacklen = sizeof (sctp_chunk_hdr_t) +  in sctp_output()
1059 			    meta == NULL ? NULL : meta->b_next, &error, sacklen,  in sctp_output()
1090 		if (sacklen > 0 && (seglen + extra <= lfp->sf_cwnd -  in sctp_output()
1092 		    (seglen + sacklen + extra <= lfp->sf_pmss)) {  in sctp_output()
1105 			head = sctp_add_proto_hdr(sctp, fp, nmp, sacklen,  in sctp_output()
1126 			seglen += sacklen;  in sctp_output()
1127 			xtralen += sacklen;  in sctp_output()
1128 			sacklen = 0;  in sctp_output()
1470 	uint32_t	sacklen;  in sctp_make_ftsns()  local
1517 		sacklen = 0;  in sctp_make_ftsns()
1519 		sacklen = sizeof (sctp_chunk_hdr_t) +  in sctp_make_ftsns()
1522 		if (*seglen + sacklen > sctp->sctp_lastdata->sf_pmss) {  in sctp_make_ftsns()
1524 			sacklen = 0;  in sctp_make_ftsns()
1529 	head = sctp_add_proto_hdr(sctp, fp, *nmp, sacklen, NULL);  in sctp_make_ftsns()
1536 	*seglen += sacklen;  in sctp_make_ftsns()
1675 	uint32_t	sacklen;  in sctp_rexmit()  local
1868 		sacklen = 0;  in sctp_rexmit()
1870 		sacklen = sizeof (sctp_chunk_hdr_t) +  in sctp_rexmit()
1873 		if (seglen + sacklen > sctp->sctp_lastdata->sf_pmss) {  in sctp_rexmit()
1875 			sacklen = 0;  in sctp_rexmit()
1925 	head = sctp_add_proto_hdr(sctp, fp, nmp, sacklen, NULL);  in sctp_rexmit()
1931 	seglen += sacklen;  in sctp_rexmit()