gitee.com/ks-custle/core-gm@v0.0.0-20230922171213-b83bdd97b62c/net/route/interface_classic.go (about) 1 // Copyright 2016 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 //go:build darwin || dragonfly || netbsd 6 // +build darwin dragonfly netbsd 7 8 package route 9 10 import "runtime" 11 12 func (w *wireFormat) parseInterfaceMessage(_ RIBType, b []byte) (Message, error) { 13 if len(b) < w.bodyOff { 14 return nil, errMessageTooShort 15 } 16 l := int(nativeEndian.Uint16(b[:2])) 17 if len(b) < l { 18 return nil, errInvalidMessage 19 } 20 attrs := uint(nativeEndian.Uint32(b[4:8])) 21 if attrs&sysRTA_IFP == 0 { 22 return nil, nil 23 } 24 m := &InterfaceMessage{ 25 Version: int(b[2]), 26 Type: int(b[3]), 27 Addrs: make([]Addr, sysRTAX_MAX), 28 Flags: int(nativeEndian.Uint32(b[8:12])), 29 Index: int(nativeEndian.Uint16(b[12:14])), 30 extOff: w.extOff, 31 raw: b[:l], 32 } 33 a, err := parseLinkAddr(b[w.bodyOff:]) 34 if err != nil { 35 return nil, err 36 } 37 m.Addrs[sysRTAX_IFP] = a 38 m.Name = a.(*LinkAddr).Name 39 return m, nil 40 } 41 42 func (w *wireFormat) parseInterfaceAddrMessage(_ RIBType, b []byte) (Message, error) { 43 if len(b) < w.bodyOff { 44 return nil, errMessageTooShort 45 } 46 l := int(nativeEndian.Uint16(b[:2])) 47 if len(b) < l { 48 return nil, errInvalidMessage 49 } 50 m := &InterfaceAddrMessage{ 51 Version: int(b[2]), 52 Type: int(b[3]), 53 Flags: int(nativeEndian.Uint32(b[8:12])), 54 raw: b[:l], 55 } 56 if runtime.GOOS == "netbsd" { 57 m.Index = int(nativeEndian.Uint16(b[16:18])) 58 } else { 59 m.Index = int(nativeEndian.Uint16(b[12:14])) 60 } 61 var err error 62 m.Addrs, err = parseAddrs(uint(nativeEndian.Uint32(b[4:8])), parseKernelInetAddr, b[w.bodyOff:]) 63 if err != nil { 64 return nil, err 65 } 66 return m, nil 67 }