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Golang RtMsg.Table方法代碼示例

本文整理匯總了Golang中github.com/vishvananda/netlink/nl.RtMsg.Table方法的典型用法代碼示例。如果您正苦於以下問題:Golang RtMsg.Table方法的具體用法?Golang RtMsg.Table怎麽用?Golang RtMsg.Table使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在github.com/vishvananda/netlink/nl.RtMsg的用法示例。


在下文中一共展示了RtMsg.Table方法的1個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的Golang代碼示例。

示例1: routeHandle

func (h *Handle) routeHandle(route *Route, req *nl.NetlinkRequest, msg *nl.RtMsg) error {
	if (route.Dst == nil || route.Dst.IP == nil) && route.Src == nil && route.Gw == nil {
		return fmt.Errorf("one of Dst.IP, Src, or Gw must not be nil")
	}

	family := -1
	var rtAttrs []*nl.RtAttr

	if route.Dst != nil && route.Dst.IP != nil {
		dstLen, _ := route.Dst.Mask.Size()
		msg.Dst_len = uint8(dstLen)
		dstFamily := nl.GetIPFamily(route.Dst.IP)
		family = dstFamily
		var dstData []byte
		if dstFamily == FAMILY_V4 {
			dstData = route.Dst.IP.To4()
		} else {
			dstData = route.Dst.IP.To16()
		}
		rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_DST, dstData))
	}

	if route.Src != nil {
		srcFamily := nl.GetIPFamily(route.Src)
		if family != -1 && family != srcFamily {
			return fmt.Errorf("source and destination ip are not the same IP family")
		}
		family = srcFamily
		var srcData []byte
		if srcFamily == FAMILY_V4 {
			srcData = route.Src.To4()
		} else {
			srcData = route.Src.To16()
		}
		// The commonly used src ip for routes is actually PREFSRC
		rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_PREFSRC, srcData))
	}

	if route.Gw != nil {
		gwFamily := nl.GetIPFamily(route.Gw)
		if family != -1 && family != gwFamily {
			return fmt.Errorf("gateway, source, and destination ip are not the same IP family")
		}
		family = gwFamily
		var gwData []byte
		if gwFamily == FAMILY_V4 {
			gwData = route.Gw.To4()
		} else {
			gwData = route.Gw.To16()
		}
		rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_GATEWAY, gwData))
	}

	if len(route.MultiPath) > 0 {
		buf := []byte{}
		for _, nh := range route.MultiPath {
			rtnh := &nl.RtNexthop{
				RtNexthop: syscall.RtNexthop{
					Hops:    uint8(nh.Hops),
					Ifindex: int32(nh.LinkIndex),
					Len:     uint16(syscall.SizeofRtNexthop),
				},
			}
			var gwData []byte
			if nh.Gw != nil {
				gwFamily := nl.GetIPFamily(nh.Gw)
				if family != -1 && family != gwFamily {
					return fmt.Errorf("gateway, source, and destination ip are not the same IP family")
				}
				var gw *nl.RtAttr
				if gwFamily == FAMILY_V4 {
					gw = nl.NewRtAttr(syscall.RTA_GATEWAY, []byte(nh.Gw.To4()))
				} else {
					gw = nl.NewRtAttr(syscall.RTA_GATEWAY, []byte(nh.Gw.To16()))
				}
				gwData := gw.Serialize()
				rtnh.Len += uint16(len(gwData))
			}
			buf = append(buf, rtnh.Serialize()...)
			buf = append(buf, gwData...)
		}
		rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_MULTIPATH, buf))
	}

	if route.Table > 0 {
		if route.Table >= 256 {
			msg.Table = syscall.RT_TABLE_UNSPEC
			b := make([]byte, 4)
			native.PutUint32(b, uint32(route.Table))
			rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_TABLE, b))
		} else {
			msg.Table = uint8(route.Table)
		}
	}

	if route.Priority > 0 {
		b := make([]byte, 4)
		native.PutUint32(b, uint32(route.Priority))
		rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_PRIORITY, b))
	}
//.........這裏部分代碼省略.........
開發者ID:CadeLaRen,項目名稱:docker-3,代碼行數:101,代碼來源:route_linux.go


注:本文中的github.com/vishvananda/netlink/nl.RtMsg.Table方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台,相關代碼片段篩選自各路編程大神貢獻的開源項目,源碼版權歸原作者所有,傳播和使用請參考對應項目的License;未經允許,請勿轉載。