Exemple #1
0
// Pack Service to a set of nlattrs.
// If full is given, include service settings, otherwise only the identifying fields are given.
func (self *Service) attrs(full bool) nlgo.AttrSlice {
	var attrs nlgo.AttrSlice

	if self.FwMark != 0 {
		attrs = append(attrs,
			nlattr(IPVS_SVC_ATTR_AF, nlgo.U16(self.Af)),
			nlattr(IPVS_SVC_ATTR_FWMARK, nlgo.U32(self.FwMark)),
		)
	} else if self.Protocol != 0 && self.Addr != nil && self.Port != 0 {
		attrs = append(attrs,
			nlattr(IPVS_SVC_ATTR_AF, nlgo.U16(self.Af)),
			nlattr(IPVS_SVC_ATTR_PROTOCOL, nlgo.U16(self.Protocol)),
			nlattr(IPVS_SVC_ATTR_ADDR, packAddr(self.Af, self.Addr)),
			nlattr(IPVS_SVC_ATTR_PORT, packPort(self.Port)),
		)
	} else {
		panic("Incomplete service id fields")
	}

	if full {
		attrs = append(attrs,
			nlattr(IPVS_SVC_ATTR_SCHED_NAME, nlgo.NulString(self.SchedName)),
			nlattr(IPVS_SVC_ATTR_FLAGS, pack(&self.Flags)),
			nlattr(IPVS_SVC_ATTR_TIMEOUT, nlgo.U32(self.Timeout)),
			nlattr(IPVS_SVC_ATTR_NETMASK, nlgo.U32(self.Netmask)),
		)
	}

	return attrs
}
Exemple #2
0
func TestDest(t *testing.T) {
	testService := Service{
		Af: syscall.AF_INET6,
	}
	testDest := Dest{
		Addr: net.ParseIP("2001:db8:6b:6b::0"),
		Port: 1337,

		FwdMethod: IP_VS_CONN_F_TUNNEL,
		Weight:    10,
		UThresh:   1000,
		LThresh:   0,
	}
	testAttrs := nlgo.AttrSlice{
		nlattr(IPVS_DEST_ATTR_ADDR, nlgo.Binary([]byte{0x20, 0x01, 0x0d, 0xb8, 0x00, 0x6b, 0x00, 0x6b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})),
		nlattr(IPVS_DEST_ATTR_PORT, nlgo.U16(0x3905)),
		nlattr(IPVS_DEST_ATTR_FWD_METHOD, nlgo.U32(IP_VS_CONN_F_TUNNEL)),
		nlattr(IPVS_DEST_ATTR_WEIGHT, nlgo.U32(10)),
		nlattr(IPVS_DEST_ATTR_U_THRESH, nlgo.U32(1000)),
		nlattr(IPVS_DEST_ATTR_L_THRESH, nlgo.U32(0)),
	}

	// pack
	packAttrs := testDest.attrs(&testService, true)
	packBytes := packAttrs.Bytes()

	if !bytes.Equal(packBytes, testAttrs.Bytes()) {
		t.Errorf("fail Dest.attrs(): \n%s", hex.Dump(packBytes))
	}

	// unpack
	if unpackedAttrs, err := ipvs_dest_policy.Parse(packBytes); err != nil {
		t.Fatalf("error ipvs_dest_policy.Parse: %s", err)
	} else if unpackedDest, err := unpackDest(testService, unpackedAttrs.(nlgo.AttrMap)); err != nil {
		t.Fatalf("error unpackDest: %s", err)
	} else {
		testDestEquals(t, testDest, unpackedDest)
	}
}
Exemple #3
0
func packPort(port uint16) nlgo.U16 {
	return nlgo.U16(htons(port))
}