func (a *Allocator) insertBitMask(key SubnetKey, pool *net.IPNet) error {
//logrus.Debugf("Inserting bitmask (%s, %s)", key.String(), pool.String())
store := a.getStore(key.AddressSpace)
ipVer := getAddressVersion(pool.IP)
ones, bits := pool.Mask.Size()
numAddresses := uint64(1 << uint(bits-ones))
// Allow /64 subnet
if ipVer == v6 && numAddresses == 0 {
numAddresses--
}
// Generate the new address masks. AddressMask content may come from datastore
h, err := bitseq.NewHandle(dsDataKey, store, key.String(), numAddresses)
if err != nil {
return err
}
// Do not let network identifier address be reserved
// Do the same for IPv6 so that bridge ip starts with XXXX...::1
h.Set(0)
// Do not let broadcast address be reserved
if ipVer == v4 {
h.Set(numAddresses - 1)
}
a.Lock()
a.addresses[key] = h
a.Unlock()
return nil
}
func (a *Allocator) insertBitMask(key SubnetKey, pool *net.IPNet) error {
log.Debugf("Inserting bitmask (%s, %s)", key.String(), pool.String())
store := a.getStore(key.AddressSpace)
if store == nil {
return fmt.Errorf("could not find store for address space %s while inserting bit mask", key.AddressSpace)
}
ipVer := getAddressVersion(pool.IP)
ones, bits := pool.Mask.Size()
numAddresses := uint32(1 << uint(bits-ones))
if ipVer == v4 {
// Do not let broadcast address be reserved
numAddresses--
}
// Generate the new address masks. AddressMask content may come from datastore
h, err := bitseq.NewHandle(dsDataKey, store, key.String(), numAddresses)
if err != nil {
return err
}
if ipVer == v4 {
// Do not let network identifier address be reserved
h.Set(0)
}
a.Lock()
a.addresses[key] = h
a.Unlock()
return nil
}
// Create and insert the internal subnet(s) addresses masks into the address database. Mask data may come from the bitseq datastore.
func (a *Allocator) insertAddressMasks(parentKey subnetKey, internalSubnetList []*net.IPNet) error {
ipVer := getAddressVersion(internalSubnetList[0].IP)
num := len(internalSubnetList)
ones, bits := internalSubnetList[0].Mask.Size()
numAddresses := 1 << uint(bits-ones)
for i := 0; i < num; i++ {
smallKey := subnetKey{parentKey.addressSpace, parentKey.subnet, internalSubnetList[i].String()}
limit := uint32(numAddresses)
if ipVer == v4 && i == num-1 {
// Do not let broadcast address be reserved
limit--
}
// Generate the new address masks. AddressMask content may come from datastore
h, err := bitseq.NewHandle(dsDataKey, a.getStore(), smallKey.String(), limit)
if err != nil {
return err
}
if ipVer == v4 && i == 0 {
// Do not let network identifier address be reserved
h.Set(0)
}
a.Lock()
a.addresses[smallKey] = h
a.Unlock()
}
return nil
}
// New returns an instance of id manager for a set of [start-end] numerical ids
func New(ds datastore.DataStore, id string, start, end uint64) (*Idm, error) {
if id == "" {
return nil, fmt.Errorf("Invalid id")
}
if end <= start {
return nil, fmt.Errorf("Invalid set range: [%d, %d]", start, end)
}
h, err := bitseq.NewHandle("idm", ds, id, 1+end-start)
if err != nil {
return nil, fmt.Errorf("failed to initialize bit sequence handler: %s", err.Error())
}
return &Idm{start: start, end: end, handle: h}, nil
}
// Create and insert the internal subnet(s) addresses masks into the address database. Mask data may come from the bitseq datastore.
func (a *Allocator) insertAddressMasks(parentKey subnetKey, internalSubnetList []*net.IPNet) error {
for _, intSub := range internalSubnetList {
var err error
ones, bits := intSub.Mask.Size()
numAddresses := 1 << uint(bits-ones)
smallKey := subnetKey{parentKey.addressSpace, parentKey.subnet, intSub.String()}
// Insert the new address masks. AddressMask content may come from datastore
a.Lock()
a.addresses[smallKey], err = bitseq.NewHandle(dsDataKey, a.store, smallKey.String(), uint32(numAddresses))
a.Unlock()
if err != nil {
return err
}
}
return nil
}
func assertGetAddress(t *testing.T, subnet string) {
var (
err error
printTime = false
a = &Allocator{}
)
_, sub, _ := net.ParseCIDR(subnet)
ones, bits := sub.Mask.Size()
zeroes := bits - ones
numAddresses := 1 << uint(zeroes)
bm, err := bitseq.NewHandle("ipam_test", nil, "default/"+subnet, uint32(numAddresses))
if err != nil {
t.Fatal(err)
}
start := time.Now()
run := 0
for err != ipamapi.ErrNoAvailableIPs {
_, err = a.getAddress(sub, bm, nil, nil)
run++
}
if printTime {
fmt.Printf("\nTaken %v, to allocate all addresses on %s. (nemAddresses: %d. Runs: %d)", time.Since(start), subnet, numAddresses, run)
}
if bm.Unselected() != 0 {
t.Fatalf("Unexpected free count after reserving all addresses: %d", bm.Unselected())
}
/*
if bm.Head.Block != expectedMax || bm.Head.Count != numBlocks {
t.Fatalf("Failed to effectively reserve all addresses on %s. Expected (0x%x, %d) as first sequence. Found (0x%x,%d)",
subnet, expectedMax, numBlocks, bm.Head.Block, bm.Head.Count)
}
*/
}
