| // Copyright 2014 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| //go:build (freebsd && 386) || (freebsd && arm) |
| |
| package syscall |
| |
| import "unsafe" |
| |
| func (any *anyMessage) parseRouteMessage(b []byte) *RouteMessage { |
| p := (*RouteMessage)(unsafe.Pointer(any)) |
| off := int(unsafe.Offsetof(p.Header.Rmx)) + SizeofRtMetrics |
| if freebsdConfArch == "amd64" { |
| off += SizeofRtMetrics // rt_metrics on amd64 is simply doubled |
| } |
| return &RouteMessage{Header: p.Header, Data: b[rsaAlignOf(off):any.Msglen]} |
| } |
| |
| func (any *anyMessage) parseInterfaceMessage(b []byte) *InterfaceMessage { |
| p := (*InterfaceMessage)(unsafe.Pointer(any)) |
| // FreeBSD 10 and beyond have a restructured mbuf |
| // packet header view. |
| // See https://svnweb.freebsd.org/base?view=revision&revision=254804. |
| if supportsABI(1000000) { |
| m := (*ifMsghdr)(unsafe.Pointer(any)) |
| p.Header.Data.Hwassist = uint32(m.Data.Hwassist) |
| p.Header.Data.Epoch = m.Data.Epoch |
| p.Header.Data.Lastchange = m.Data.Lastchange |
| return &InterfaceMessage{Header: p.Header, Data: b[int(unsafe.Offsetof(p.Header.Data))+int(p.Header.Data.Datalen) : any.Msglen]} |
| } |
| return &InterfaceMessage{Header: p.Header, Data: b[int(unsafe.Offsetof(p.Header.Data))+int(p.Header.Data.Datalen) : any.Msglen]} |
| } |
