Ejemplo n.º 1
0
func (d *of12Driver) nomMatch(m of12.Match) (nom.Match, error) {
	nm := nom.Match{}

	if !of12.IsOXMatch(m) {
		return nm, fmt.Errorf("of12Driver: std math is not supported")
	}

	xm, err := of12.ToOXMatch(m)
	if err != nil {
		return nm, err
	}

	for _, f := range xm.Fields() {
		switch f.OxmField() {
		case uint8(of12.PXMT_IN_PORT):
			xf, err := of12.ToOxmInPort(f)
			if err != nil {
				return nom.Match{}, err
			}

			np, ok := d.ofPorts[xf.InPort()]
			if !ok {
				return nom.Match{}, fmt.Errorf("of12Driver: cannot find port %v",
					xf.InPort())
			}
			nm.AddField(nom.InPort(np.UID()))

		case uint8(of12.PXMT_ETH_TYPE):
			xf, err := of12.ToOxmEthType(f)
			if err != nil {
				return nom.Match{}, err
			}
			nm.AddField(nom.EthType(xf.Type()))

		case uint8(of12.PXMT_ETH_SRC):
			xf, err := of12.ToOxmEthSrc(f)
			if err != nil {
				return nom.Match{}, err
			}

			nf := nom.EthSrc{}
			nf.Addr = xf.MacAddr()
			nf.Mask = nom.MaskNoneMAC
			nm.AddField(nf)

		case uint8(of12.PXMT_ETH_SRC_MASKED):
			xf, err := of12.ToOxmEthSrcMasked(f)
			if err != nil {
				return nom.Match{}, err
			}

			nf := nom.EthSrc{}
			nf.Addr = xf.MacAddr()
			nf.Mask = xf.Mask()
			nm.AddField(nf)

		case uint8(of12.PXMT_ETH_DST):
			xf, err := of12.ToOxmEthDst(f)
			if err != nil {
				return nom.Match{}, err
			}

			nf := nom.EthDst{}
			nf.Addr = xf.MacAddr()
			nf.Mask = nom.MaskNoneMAC
			nm.AddField(nf)

		case uint8(of12.PXMT_ETH_DST_MASKED):
			xf, err := of12.ToOxmEthDstMasked(f)
			if err != nil {
				return nom.Match{}, err
			}

			nf := nom.EthDst{}
			nf.Addr = xf.MacAddr()
			nf.Mask = xf.Mask()
			nm.AddField(nf)

		case uint8(of12.PXMT_IP_PROTO):
			xf, err := of12.ToOxmIpProto(f)
			if err != nil {
				return nom.Match{}, err
			}

			nm.AddField(nom.IPProto(xf.Proto()))

		case uint8(of12.PXMT_IPV4_SRC):
			xf, err := of12.ToOxmIpV4Src(f)
			if err != nil {
				return nom.Match{}, err
			}

			nf := nom.IPv4Src{}
			nf.Addr = nom.IPv4Addr(xf.Addr())
			nf.Mask = nom.MaskNoneIPV4
			nm.AddField(nf)

		case uint8(of12.PXMT_IPV4_SRC_MASKED):
			xf, err := of12.ToOxmIpV4SrcMasked(f)
			if err != nil {
				return nom.Match{}, err
			}

			nf := nom.IPv4Src{}
			nf.Addr = nom.IPv4Addr(xf.Addr())
			nf.Mask = nom.IPv4Addr(xf.Mask())
			nm.AddField(nf)

		case uint8(of12.PXMT_IPV4_DST):
			xf, err := of12.ToOxmIpV4Dst(f)
			if err != nil {
				return nom.Match{}, err
			}

			nf := nom.IPv4Dst{}
			nf.Addr = nom.IPv4Addr(xf.Addr())
			nf.Mask = nom.MaskNoneIPV4
			nm.AddField(nf)

		case uint8(of12.PXMT_IPV4_DST_MASKED):
			xf, err := of12.ToOxmIpV4DstMasked(f)
			if err != nil {
				return nom.Match{}, err
			}

			nf := nom.IPv4Dst{}
			nf.Addr = nom.IPv4Addr(xf.Addr())
			nf.Mask = nom.IPv4Addr(xf.Mask())
			nm.AddField(nf)

		case uint8(of12.PXMT_IPV6_SRC):
			xf, err := of12.ToOxmIpV6Src(f)
			if err != nil {
				return nom.Match{}, err
			}

			nf := nom.IPv6Src{}
			nf.Addr = nom.IPv6Addr(xf.Addr())
			nf.Mask = nom.MaskNoneIPV6
			nm.AddField(nf)

		case uint8(of12.PXMT_IPV6_SRC_MASKED):
			xf, err := of12.ToOxmIpV6SrcMasked(f)
			if err != nil {
				return nom.Match{}, err
			}

			nf := nom.IPv6Src{}
			nf.Addr = nom.IPv6Addr(xf.Addr())
			nf.Mask = nom.IPv6Addr(xf.Mask())
			nm.AddField(nf)

		case uint8(of12.PXMT_IPV6_DST):
			xf, err := of12.ToOxmIpV6Dst(f)
			if err != nil {
				return nom.Match{}, err
			}

			nf := nom.IPv6Dst{}
			nf.Addr = nom.IPv6Addr(xf.Addr())
			nf.Mask = nom.MaskNoneIPV6
			nm.AddField(nf)

		case uint8(of12.PXMT_IPV6_DST_MASKED):
			xf, err := of12.ToOxmIpV6DstMasked(f)
			if err != nil {
				return nom.Match{}, err
			}

			nf := nom.IPv6Dst{}
			nf.Addr = nom.IPv6Addr(xf.Addr())
			nf.Mask = nom.IPv6Addr(xf.Mask())
			nm.AddField(nf)

		case uint8(of12.PXMT_TCP_SRC):
			xf, err := of12.ToOxmTcpSrc(f)
			if err != nil {
				return nom.Match{}, err
			}

			nm.AddField(nom.TransportPortSrc(xf.Port()))

		case uint8(of12.PXMT_TCP_DST):
			xf, err := of12.ToOxmTcpDst(f)
			if err != nil {
				return nom.Match{}, err
			}

			nm.AddField(nom.TransportPortDst(xf.Port()))
		}
	}

	return nm, nil
}
Ejemplo n.º 2
0
func (d *of10Driver) nomMatch(m of10.Match) (nom.Match, error) {
	nm := nom.Match{}
	wc := of10.FlowWildcards(m.Wildcards())
	if wc&of10.PFW_IN_PORT == 0 {
		ofp := m.InPort()
		nomp, ok := d.ofPorts[ofp]
		if !ok {
			return nom.Match{}, fmt.Errorf("of10Driver: cannot find port %v", ofp)
		}
		nm.AddField(nom.InPort(nomp.UID()))
	}
	if wc&of10.PFW_DL_SRC == 0 {
		nm.AddField(nom.EthSrc{
			Addr: m.DlSrc(),
			Mask: nom.MaskNoneMAC,
		})
	}
	if wc&of10.PFW_DL_DST == 0 {
		nm.AddField(nom.EthDst{
			Addr: m.DlDst(),
			Mask: nom.MaskNoneMAC,
		})
	}
	if wc&of10.PFW_DL_TYPE == 0 {
		nm.AddField(nom.EthType(m.DlType()))
	}
	if wc&of10.PFW_NW_SRC_MASK != of10.PFW_NW_SRC_ALL && m.NwSrc() != 0 {
		mask := uint(wc&of10.PFW_NW_SRC_MASK) >> uint(of10.PFW_NW_SRC_SHIFT)
		nm.AddField(nom.IPv4Src(nom.CIDRToMaskedIPv4(m.NwSrc(), mask)))
	}
	if wc&of10.PFW_NW_DST_MASK != of10.PFW_NW_DST_ALL && m.NwDst() != 0 {
		mask := uint(wc&of10.PFW_NW_DST_MASK) >> uint(of10.PFW_NW_DST_SHIFT)
		nm.AddField(nom.IPv4Dst(nom.CIDRToMaskedIPv4(m.NwDst(), mask)))
	}
	if wc&of10.PFW_TP_SRC == 0 {
		nm.AddField(nom.TransportPortSrc(m.TpSrc()))
	}
	if wc&of10.PFW_TP_DST == 0 {
		nm.AddField(nom.TransportPortDst(m.TpDst()))
	}
	return nm, nil
}