// networkReleaseAddress release the ip address
func networkReleaseAddress(nwCfg *mastercfg.CfgNetworkState, ipAddress string) error {
ipAddrValue, err := netutils.GetIPNumber(nwCfg.SubnetIP, nwCfg.SubnetLen, 32, ipAddress)
if err != nil {
log.Errorf("error getting host id from hostIP %s Subnet %s/%d. Error: %s",
ipAddress, nwCfg.SubnetIP, nwCfg.SubnetLen, err)
return err
}
nwCfg.IPAllocMap.Clear(ipAddrValue)
nwCfg.EpCount--
return nil
}
func freeEndpointResources(epCfg *drivers.OvsCfgEndpointState,
nwCfg *drivers.OvsCfgNetworkState) error {
if epCfg.IPAddress == "" {
return nil
}
ipAddrValue, err := netutils.GetIPNumber(
nwCfg.SubnetIP, nwCfg.SubnetLen, 32, epCfg.IPAddress)
if err != nil {
log.Errorf("error getting host id from hostIP %s Subnet %s/%d. Error: %s",
epCfg.IPAddress, nwCfg.SubnetIP, nwCfg.SubnetLen, err)
return err
}
nwCfg.IPAllocMap.Clear(ipAddrValue)
nwCfg.EpCount--
return nil
}
// Allocate an address from the network
func networkAllocAddress(nwCfg *mastercfg.CfgNetworkState, reqAddr string) (string, error) {
var ipAddress string
var ipAddrValue uint
var found bool
var err error
// alloc address
if reqAddr == "" {
ipAddrValue, found = nwCfg.IPAllocMap.NextClear(0)
if !found {
log.Errorf("auto allocation failed - address exhaustion in subnet %s/%d",
nwCfg.SubnetIP, nwCfg.SubnetLen)
err = core.Errorf("auto allocation failed - address exhaustion in subnet %s/%d",
nwCfg.SubnetIP, nwCfg.SubnetLen)
return "", err
}
ipAddress, err = netutils.GetSubnetIP(nwCfg.SubnetIP, nwCfg.SubnetLen, 32, ipAddrValue)
if err != nil {
log.Errorf("create eps: error acquiring subnet ip. Error: %s", err)
return "", err
}
} else if reqAddr != "" && nwCfg.SubnetIP != "" {
ipAddrValue, err = netutils.GetIPNumber(nwCfg.SubnetIP, nwCfg.SubnetLen, 32, reqAddr)
if err != nil {
log.Errorf("create eps: error getting host id from hostIP %s Subnet %s/%d. Error: %s",
reqAddr, nwCfg.SubnetIP, nwCfg.SubnetLen, err)
return "", err
}
ipAddress = reqAddr
}
// Set the bitmap
nwCfg.IPAllocMap.Set(ipAddrValue)
err = nwCfg.Write()
if err != nil {
log.Errorf("error writing nw config. Error: %s", err)
return "", err
}
return ipAddress, nil
}
func allocSetEpAddress(ep *intent.ConfigEP, epCfg *drivers.OvsCfgEndpointState,
nwCfg *drivers.OvsCfgNetworkState) (err error) {
var ipAddrValue uint
var found bool
ipAddress := ep.IPAddress
if ipAddress == "" {
if ipAddrValue, found = nwCfg.IPAllocMap.NextClear(0); !found {
log.Errorf("auto allocation failed - address exhaustion in subnet %s/%d",
nwCfg.SubnetIP, nwCfg.SubnetLen)
err = core.Errorf("auto allocation failed - address exhaustion in subnet %s/%d",
nwCfg.SubnetIP, nwCfg.SubnetLen)
return
}
ipAddress, err = netutils.GetSubnetIP(
nwCfg.SubnetIP, nwCfg.SubnetLen, 32, ipAddrValue)
if err != nil {
log.Errorf("create eps: error acquiring subnet ip. Error: %s", err)
return
}
} else if ipAddress != "" && nwCfg.SubnetIP != "" {
ipAddrValue, err = netutils.GetIPNumber(
nwCfg.SubnetIP, nwCfg.SubnetLen, 32, ipAddress)
if err != nil {
log.Errorf("create eps: error getting host id from hostIP %s Subnet %s/%d. Error: %s",
ipAddress, nwCfg.SubnetIP, nwCfg.SubnetLen, err)
return
}
}
epCfg.IPAddress = ipAddress
nwCfg.IPAllocMap.Set(ipAddrValue)
// Set mac address which is derived from IP address
ipAddr := net.ParseIP(ipAddress)
macAddr := fmt.Sprintf("02:02:%02x:%02x:%02x:%02x", ipAddr[12], ipAddr[13], ipAddr[14], ipAddr[15])
epCfg.MacAddress = macAddr
return
}
// Deallocate the resource. Must be passed a SubnetIPLenPair.
func (r *AutoSubnetCfgResource) Deallocate(value interface{}) error {
oper := &AutoSubnetOperResource{}
oper.StateDriver = r.StateDriver
err := oper.Read(r.ID)
if err != nil {
return err
}
pair, ok := value.(SubnetIPLenPair)
if !ok {
return core.Errorf("Invalid type for subnet value")
}
if pair.Len != r.AllocSubnetLen {
return core.Errorf("Invalid subnet length. Exp: %d Rcvd: %d",
r.AllocSubnetLen, pair.Len)
}
var subnet uint
subnet, err = netutils.GetIPNumber(r.SubnetPool.String(), r.SubnetPoolLen,
pair.Len, pair.IP.String())
if err != nil {
return err
}
if oper.FreeSubnets.Test(subnet) {
return nil
}
oper.FreeSubnets.Set(subnet)
err = oper.Write()
if err != nil {
return err
}
return nil
}