sctp_add_proto_hdr
head = sctp_add_proto_hdr(sctp, fp, cemp, 0, NULL);
extern mblk_t *sctp_add_proto_hdr(sctp_t *, sctp_faddr_t *, mblk_t *, int,
head = sctp_add_proto_hdr(sctp, fp, nmp, 0, NULL);
head = sctp_add_proto_hdr(sctp, fp, nmp, sacklen,
head = sctp_add_proto_hdr(sctp, fp, nmp, 0, &error);
head = sctp_add_proto_hdr(sctp, fp, *nmp, sacklen, NULL);
head = sctp_add_proto_hdr(sctp, fp, nmp, sacklen, NULL);
head = sctp_add_proto_hdr(sctp, fp, nmp, 0, NULL);
if ((head = sctp_add_proto_hdr(sctp, fp, mp, 0, NULL)) == NULL) {