/* * IP6_EXTHDR_GET ensures that intermediate protocol header (from "off" to * "len") is located in single mbuf, on contiguous memory region. * The pointer to the region will be returned to pointer variable "val", * with type "typ". * IP6_EXTHDR_GET0 does the same, except that it aligns the structure at the * very top of mbuf. GET0 is likely to make memory copy than GET. * * XXX we're now testing this, needs m_pulldown() */