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Vendoring libnetwork for rc5

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Signed-off-by: Madhu Venugopal <madhu@docker.com>
This commit is contained in:
Madhu Venugopal 2016-07-24 20:08:00 -07:00
parent 9c1be541ff
commit 56b78ab2f2
8 changed files with 85 additions and 283 deletions
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2
hack/vendor.sh
View file

@ -65,7 +65,7 @@ clone git github.com/RackSec/srslog 259aed10dfa74ea2961eddd1d9847619f6e98837
clone git github.com/imdario/mergo 0.2.1
#get libnetwork packages
clone git github.com/docker/libnetwork 83ab4deaa2da3deb32cb5e64ceec43801dc17370
clone git github.com/docker/libnetwork 6a3feece4ede9473439f0c835a13e666dc2ab857
clone git github.com/docker/go-events afb2b9f2c23f33ada1a22b03651775fdc65a5089
clone git github.com/armon/go-radix e39d623f12e8e41c7b5529e9a9dd67a1e2261f80
clone git github.com/armon/go-metrics eb0af217e5e9747e41dd5303755356b62d28e3ec

4
vendor/src/github.com/docker/libnetwork/controller.go vendored
View file

@ -526,6 +526,8 @@ func (c *controller) Config() config.Config {
}
func (c *controller) isManager() bool {
c.Lock()
defer c.Unlock()
if c.cfg == nil || c.cfg.Daemon.ClusterProvider == nil {
return false
}
@ -533,6 +535,8 @@ func (c *controller) isManager() bool {
}
func (c *controller) isAgent() bool {
c.Lock()
defer c.Unlock()
if c.cfg == nil || c.cfg.Daemon.ClusterProvider == nil {
return false
}

79
vendor/src/github.com/docker/libnetwork/drivers/overlay/encryption.go vendored
View file

@ -88,15 +88,15 @@ func (d *driver) checkEncryption(nid string, rIP net.IP, vxlanID uint32, isLocal
return types.ForbiddenErrorf("encryption key is not present")
}
lIP := types.GetMinimalIP(net.ParseIP(d.bindAddress))
aIP := types.GetMinimalIP(net.ParseIP(d.advertiseAddress))
lIP := net.ParseIP(d.bindAddress)
aIP := net.ParseIP(d.advertiseAddress)
nodes := map[string]net.IP{}
switch {
case isLocal:
if err := d.peerDbNetworkWalk(nid, func(pKey *peerKey, pEntry *peerEntry) bool {
if !lIP.Equal(pEntry.vtep) {
nodes[pEntry.vtep.String()] = types.GetMinimalIP(pEntry.vtep)
nodes[pEntry.vtep.String()] = pEntry.vtep
}
return false
}); err != nil {
@ -104,7 +104,7 @@ func (d *driver) checkEncryption(nid string, rIP net.IP, vxlanID uint32, isLocal
}
default:
if len(d.network(nid).endpoints) > 0 {
nodes[rIP.String()] = types.GetMinimalIP(rIP)
nodes[rIP.String()] = rIP
}
}
@ -337,7 +337,7 @@ func saExists(sa *netlink.XfrmState) (bool, error) {
return false, nil
default:
err = fmt.Errorf("Error while checking for SA existence: %v", err)
log.Debug(err)
log.Warn(err)
return false, err
}
}
@ -351,7 +351,7 @@ func spExists(sp *netlink.XfrmPolicy) (bool, error) {
return false, nil
default:
err = fmt.Errorf("Error while checking for SP existence: %v", err)
log.Debug(err)
log.Warn(err)
return false, err
}
}
@ -411,7 +411,7 @@ func (d *driver) updateKeys(newKey, primary, pruneKey *key) error {
newIdx = -1
priIdx = -1
delIdx = -1
lIP = types.GetMinimalIP(net.ParseIP(d.bindAddress))
lIP = net.ParseIP(d.bindAddress)
)
d.Lock()
@ -440,7 +440,7 @@ func (d *driver) updateKeys(newKey, primary, pruneKey *key) error {
}
d.secMapWalk(func(rIPs string, spis []*spi) ([]*spi, bool) {
rIP := types.GetMinimalIP(net.ParseIP(rIPs))
rIP := net.ParseIP(rIPs)
return updateNodeKey(lIP, rIP, spis, d.keys, newIdx, priIdx, delIdx), false
})
@ -466,10 +466,9 @@ func (d *driver) updateKeys(newKey, primary, pruneKey *key) error {
}
/********************************************************
* Steady state: rSA0, rSA1, fSA0, fSP0
* Rotation --> %rSA0, +rSA2, +fSA1, +fSP1/-fSP0, -fSA0,
* Half state: rSA0, rSA1, rSA2, fSA1, fSP1
* Steady state: rSA1, rSA2, fSA1, fSP1
* Steady state: rSA0, rSA1, rSA2, fSA1, fSP1
* Rotation --> -rSA0, +rSA3, +fSA2, +fSP2/-fSP1, -fSA1
* Steady state: rSA1, rSA2, rSA3, fSA2, fSP2
*********************************************************/
// Spis and keys are sorted in such away the one in position 0 is the primary
@ -488,20 +487,8 @@ func updateNodeKey(lIP, rIP net.IP, idxs []*spi, curKeys []*key, newIdx, priIdx,
}
if delIdx != -1 {
// %rSA0
rSA0 := &netlink.XfrmState{
Src: rIP,
Dst: lIP,
Proto: netlink.XFRM_PROTO_ESP,
Spi: spis[delIdx].reverse,
Mode: netlink.XFRM_MODE_TRANSPORT,
Crypt: &netlink.XfrmStateAlgo{Name: "cbc(aes)", Key: curKeys[delIdx].value},
Limits: netlink.XfrmStateLimits{TimeSoft: timeout},
}
log.Debugf("Updating rSA0{%s}", rSA0)
if err := ns.NlHandle().XfrmStateUpdate(rSA0); err != nil {
log.Warnf("Failed to update rSA0{%s}: %v", rSA0, err)
}
// -rSA0
programSA(rIP, lIP, spis[delIdx], nil, reverse, false)
}
if newIdx > -1 {
@ -510,14 +497,14 @@ func updateNodeKey(lIP, rIP net.IP, idxs []*spi, curKeys []*key, newIdx, priIdx,
}
if priIdx > 0 {
// +fSA1
fSA1, _, _ := programSA(lIP, rIP, spis[priIdx], curKeys[priIdx], forward, true)
// +fSA2
fSA2, _, _ := programSA(lIP, rIP, spis[priIdx], curKeys[priIdx], forward, true)
// +fSP1, -fSP0
fullMask := net.CIDRMask(8*len(fSA1.Src), 8*len(fSA1.Src))
// +fSP2, -fSP1
fullMask := net.CIDRMask(8*len(fSA2.Src), 8*len(fSA2.Src))
fSP1 := &netlink.XfrmPolicy{
Src: &net.IPNet{IP: fSA1.Src, Mask: fullMask},
Dst: &net.IPNet{IP: fSA1.Dst, Mask: fullMask},
Src: &net.IPNet{IP: fSA2.Src, Mask: fullMask},
Dst: &net.IPNet{IP: fSA2.Dst, Mask: fullMask},
Dir: netlink.XFRM_DIR_OUT,
Proto: 17,
DstPort: 4789,
@ -526,11 +513,11 @@ func updateNodeKey(lIP, rIP net.IP, idxs []*spi, curKeys []*key, newIdx, priIdx,
},
Tmpls: []netlink.XfrmPolicyTmpl{
{
Src: fSA1.Src,
Dst: fSA1.Dst,
Src: fSA2.Src,
Dst: fSA2.Dst,
Proto: netlink.XFRM_PROTO_ESP,
Mode: netlink.XFRM_MODE_TRANSPORT,
Spi: fSA1.Spi,
Spi: fSA2.Spi,
},
},
}
@ -539,20 +526,8 @@ func updateNodeKey(lIP, rIP net.IP, idxs []*spi, curKeys []*key, newIdx, priIdx,
log.Warnf("Failed to update fSP{%s}: %v", fSP1, err)
}
// -fSA0
fSA0 := &netlink.XfrmState{
Src: lIP,
Dst: rIP,
Proto: netlink.XFRM_PROTO_ESP,
Spi: spis[0].forward,
Mode: netlink.XFRM_MODE_TRANSPORT,
Crypt: &netlink.XfrmStateAlgo{Name: "cbc(aes)", Key: curKeys[0].value},
Limits: netlink.XfrmStateLimits{TimeHard: timeout},
}
log.Debugf("Removing fSA0{%s}", fSA0)
if err := ns.NlHandle().XfrmStateUpdate(fSA0); err != nil {
log.Warnf("Failed to remove fSA0{%s}: %v", fSA0, err)
}
// -fSA1
programSA(lIP, rIP, spis[0], nil, forward, false)
}
// swap
@ -575,7 +550,11 @@ func updateNodeKey(lIP, rIP net.IP, idxs []*spi, curKeys []*key, newIdx, priIdx,
}
func (n *network) maxMTU() int {
mtu := vxlanVethMTU
mtu := 1500
if n.mtu != 0 {
mtu = n.mtu
}
mtu -= vxlanEncap
if n.secure {
// In case of encryption account for the
// esp packet espansion and padding

27
vendor/src/github.com/docker/libnetwork/drivers/overlay/ov_network.go vendored
View file

@ -63,6 +63,7 @@ type network struct {
initErr error
subnets []*subnet
secure bool
mtu int
sync.Mutex
}
@ -111,9 +112,18 @@ func (d *driver) CreateNetwork(id string, option map[string]interface{}, nInfo d
vnis = append(vnis, uint32(vni))
}
}
if _, ok := optMap["secure"]; ok {
if _, ok := optMap[secureOption]; ok {
n.secure = true
}
if val, ok := optMap[netlabel.DriverMTU]; ok {
var err error
if n.mtu, err = strconv.Atoi(val); err != nil {
return fmt.Errorf("failed to parse %v: %v", val, err)
}
if n.mtu < 0 {
return fmt.Errorf("invalid MTU value: %v", n.mtu)
}
}
}
// If we are getting vnis from libnetwork, either we get for
@ -140,6 +150,13 @@ func (d *driver) CreateNetwork(id string, option map[string]interface{}, nInfo d
return fmt.Errorf("failed to update data store for network %v: %v", n.id, err)
}
// Make sure no rule is on the way from any stale secure network
if !n.secure {
for _, vni := range vnis {
programMangle(vni, false)
}
}
if nInfo != nil {
if err := nInfo.TableEventRegister(ovPeerTable); err != nil {
return err
@ -315,7 +332,7 @@ func networkOnceInit() {
return
}
err := createVxlan("testvxlan", 1)
err := createVxlan("testvxlan", 1, 0)
if err != nil {
logrus.Errorf("Failed to create testvxlan interface: %v", err)
return
@ -459,7 +476,7 @@ func (n *network) setupSubnetSandbox(s *subnet, brName, vxlanName string) error
return fmt.Errorf("bridge creation in sandbox failed for subnet %q: %v", s.subnetIP.String(), err)
}
err := createVxlan(vxlanName, n.vxlanID(s))
err := createVxlan(vxlanName, n.vxlanID(s), n.maxMTU())
if err != nil {
return err
}
@ -732,6 +749,7 @@ func (n *network) Value() []byte {
m["secure"] = n.secure
m["subnets"] = netJSON
m["mtu"] = n.mtu
b, err = json.Marshal(m)
if err != nil {
return []byte{}
@ -781,6 +799,9 @@ func (n *network) SetValue(value []byte) error {
if val, ok := m["secure"]; ok {
n.secure = val.(bool)
}
if val, ok := m["mtu"]; ok {
n.mtu = int(val.(float64))
}
bytes, err := json.Marshal(m["subnets"])
if err != nil {
return err

4
vendor/src/github.com/docker/libnetwork/drivers/overlay/ov_utils.go vendored
View file

@ -52,11 +52,11 @@ func createVethPair() (string, string, error) {
return name1, name2, nil
}
func createVxlan(name string, vni uint32) error {
func createVxlan(name string, vni uint32, mtu int) error {
defer osl.InitOSContext()()
vxlan := &netlink.Vxlan{
LinkAttrs: netlink.LinkAttrs{Name: name},
LinkAttrs: netlink.LinkAttrs{Name: name, MTU: mtu},
VxlanId: int(vni),
Learning: true,
Port: vxlanPort,

3
vendor/src/github.com/docker/libnetwork/drivers/overlay/overlay.go vendored
View file

@ -25,7 +25,8 @@ const (
vxlanIDStart = 256
vxlanIDEnd = (1 << 24) - 1
vxlanPort = 4789
vxlanVethMTU = 1450
vxlanEncap = 50
secureOption = "encrypted"
)
var initVxlanIdm = make(chan (bool), 1)

11
vendor/src/github.com/docker/libnetwork/endpoint.go vendored
View file

@ -536,9 +536,6 @@ func (ep *endpoint) sbJoin(sb *sandbox, options ...EndpointOption) error {
}
}
if sb.resolver != nil {
sb.resolver.FlushExtServers()
}
}
if !sb.needDefaultGW() {
@ -619,10 +616,6 @@ func (ep *endpoint) Leave(sbox Sandbox, options ...EndpointOption) error {
sb.joinLeaveStart()
defer sb.joinLeaveEnd()
if sb.resolver != nil {
sb.resolver.FlushExtServers()
}
return ep.sbLeave(sb, false, options...)
}
@ -776,9 +769,7 @@ func (ep *endpoint) Delete(force bool) error {
}()
// unwatch for service records
if !n.getController().isAgent() {
n.getController().unWatchSvcRecord(ep)
}
n.getController().unWatchSvcRecord(ep)
if err = ep.deleteEndpoint(force); err != nil && !force {
return err

238
vendor/src/github.com/docker/libnetwork/resolver.go vendored
View file

@ -30,9 +30,6 @@ type Resolver interface {
// SetExtServers configures the external nameservers the resolver
// should use to forward queries
SetExtServers([]string)
// FlushExtServers clears the cached UDP connections to external
// nameservers
FlushExtServers()
// ResolverOptions returns resolv.conf options that should be set
ResolverOptions() []string
}
@ -48,35 +45,12 @@ const (
defaultRespSize = 512
maxConcurrent = 100
logInterval = 2 * time.Second
maxDNSID = 65536
)
type clientConn struct {
dnsID uint16
respWriter dns.ResponseWriter
}
type extDNSEntry struct {
ipStr string
extConn net.Conn
extOnce sync.Once
ipStr string
}
type sboxQuery struct {
sboxID string
dnsID uint16
}
type clientConnGC struct {
toDelete bool
client clientConn
}
var (
queryGCMutex sync.Mutex
queryGC map[sboxQuery]*clientConnGC
)
// resolver implements the Resolver interface
type resolver struct {
sb *sandbox
@ -89,34 +63,17 @@ type resolver struct {
count int32
tStamp time.Time
queryLock sync.Mutex
client map[uint16]clientConn
}
func init() {
rand.Seed(time.Now().Unix())
queryGC = make(map[sboxQuery]*clientConnGC)
go func() {
ticker := time.NewTicker(1 * time.Minute)
for range ticker.C {
queryGCMutex.Lock()
for query, conn := range queryGC {
if !conn.toDelete {
conn.toDelete = true
continue
}
delete(queryGC, query)
}
queryGCMutex.Unlock()
}
}()
}
// NewResolver creates a new instance of the Resolver
func NewResolver(sb *sandbox) Resolver {
return &resolver{
sb: sb,
err: fmt.Errorf("setup not done yet"),
client: make(map[uint16]clientConn),
sb: sb,
err: fmt.Errorf("setup not done yet"),
}
}
@ -173,20 +130,7 @@ func (r *resolver) Start() error {
return nil
}
func (r *resolver) FlushExtServers() {
for i := 0; i < maxExtDNS; i++ {
if r.extDNSList[i].extConn != nil {
r.extDNSList[i].extConn.Close()
}
r.extDNSList[i].extConn = nil
r.extDNSList[i].extOnce = sync.Once{}
}
}
func (r *resolver) Stop() {
r.FlushExtServers()
if r.server != nil {
r.server.Shutdown()
}
@ -355,7 +299,6 @@ func (r *resolver) ServeDNS(w dns.ResponseWriter, query *dns.Msg) {
extConn net.Conn
resp *dns.Msg
err error
writer dns.ResponseWriter
)
if query == nil || len(query.Question) == 0 {
@ -397,10 +340,7 @@ func (r *resolver) ServeDNS(w dns.ResponseWriter, query *dns.Msg) {
if resp.Len() > maxSize {
truncateResp(resp, maxSize, proto == "tcp")
}
writer = w
} else {
queryID := query.Id
extQueryLoop:
for i := 0; i < maxExtDNS; i++ {
extDNS := &r.extDNSList[i]
if extDNS.ipStr == "" {
@ -411,30 +351,9 @@ func (r *resolver) ServeDNS(w dns.ResponseWriter, query *dns.Msg) {
extConn, err = net.DialTimeout(proto, addr, extIOTimeout)
}
// For udp clients connection is persisted to reuse for further queries.
// Accessing extDNS.extConn be a race here between go rouines. Hence the
// connection setup is done in a Once block and fetch the extConn again
extConn = extDNS.extConn
if extConn == nil || proto == "tcp" {
if proto == "udp" {
extDNS.extOnce.Do(func() {
r.sb.execFunc(extConnect)
extDNS.extConn = extConn
})
extConn = extDNS.extConn
} else {
r.sb.execFunc(extConnect)
}
if err != nil {
log.Debugf("Connect failed, %s", err)
continue
}
}
// If two go routines are executing in parralel one will
// block on the Once.Do and in case of error connecting
// to the external server it will end up with a nil err
// but extConn also being nil.
if extConn == nil {
r.sb.execFunc(extConnect)
if err != nil {
log.Debugf("Connect failed, %s", err)
continue
}
log.Debugf("Query %s[%d] from %s, forwarding to %s:%s", name, query.Question[0].Qtype,
@ -443,10 +362,10 @@ func (r *resolver) ServeDNS(w dns.ResponseWriter, query *dns.Msg) {
// Timeout has to be set for every IO operation.
extConn.SetDeadline(time.Now().Add(extIOTimeout))
co := &dns.Conn{Conn: extConn}
defer co.Close()
// forwardQueryStart stores required context to mux multiple client queries over
// one connection; and limits the number of outstanding concurrent queries.
if r.forwardQueryStart(w, query, queryID) == false {
// limits the number of outstanding concurrent queries.
if r.forwardQueryStart() == false {
old := r.tStamp
r.tStamp = time.Now()
if r.tStamp.Sub(old) > logInterval {
@ -455,69 +374,38 @@ func (r *resolver) ServeDNS(w dns.ResponseWriter, query *dns.Msg) {
continue
}
defer func() {
if proto == "tcp" {
co.Close()
}
}()
err = co.WriteMsg(query)
if err != nil {
r.forwardQueryEnd(w, query)
r.forwardQueryEnd()
log.Debugf("Send to DNS server failed, %s", err)
continue
}
for {
// If a reply comes after a read timeout it will remain in the socket buffer
// and will be read after sending next query. To ignore such stale replies
// save the query context in a GC queue when read timesout. On the next reply
// if the context is present in the GC queue its a old reply. Ignore it and
// read again
resp, err = co.ReadMsg()
if err != nil {
if nerr, ok := err.(net.Error); ok && nerr.Timeout() {
r.addQueryToGC(w, query)
}
r.forwardQueryEnd(w, query)
log.Debugf("Read from DNS server failed, %s", err)
continue extQueryLoop
}
if !r.checkRespInGC(w, resp) {
break
}
}
// Retrieves the context for the forwarded query and returns the client connection
// to send the reply to
writer = r.forwardQueryEnd(w, resp)
if writer == nil {
resp, err = co.ReadMsg()
// Truncated DNS replies should be sent to the client so that the
// client can retry over TCP
if err != nil && err != dns.ErrTruncated {
r.forwardQueryEnd()
log.Debugf("Read from DNS server failed, %s", err)
continue
}
r.forwardQueryEnd()
resp.Compress = true
break
}
if resp == nil || writer == nil {
if resp == nil {
return
}
}
if writer == nil {
return
}
if err = writer.WriteMsg(resp); err != nil {
if err = w.WriteMsg(resp); err != nil {
log.Errorf("error writing resolver resp, %s", err)
}
}
func (r *resolver) forwardQueryStart(w dns.ResponseWriter, msg *dns.Msg, queryID uint16) bool {
proto := w.LocalAddr().Network()
dnsID := uint16(rand.Intn(maxDNSID))
cc := clientConn{
dnsID: queryID,
respWriter: w,
}
func (r *resolver) forwardQueryStart() bool {
r.queryLock.Lock()
defer r.queryLock.Unlock()
@ -526,74 +414,10 @@ func (r *resolver) forwardQueryStart(w dns.ResponseWriter, msg *dns.Msg, queryID
}
r.count++
switch proto {
case "tcp":
break
case "udp":
for ok := true; ok == true; dnsID = uint16(rand.Intn(maxDNSID)) {
_, ok = r.client[dnsID]
}
log.Debugf("client dns id %v, changed id %v", queryID, dnsID)
r.client[dnsID] = cc
msg.Id = dnsID
default:
log.Errorf("Invalid protocol..")
return false
}
return true
}
func (r *resolver) addQueryToGC(w dns.ResponseWriter, msg *dns.Msg) {
if w.LocalAddr().Network() != "udp" {
return
}
r.queryLock.Lock()
cc, ok := r.client[msg.Id]
r.queryLock.Unlock()
if !ok {
return
}
query := sboxQuery{
sboxID: r.sb.ID(),
dnsID: msg.Id,
}
clientGC := &clientConnGC{
client: cc,
}
queryGCMutex.Lock()
queryGC[query] = clientGC
queryGCMutex.Unlock()
}
func (r *resolver) checkRespInGC(w dns.ResponseWriter, msg *dns.Msg) bool {
if w.LocalAddr().Network() != "udp" {
return false
}
query := sboxQuery{
sboxID: r.sb.ID(),
dnsID: msg.Id,
}
queryGCMutex.Lock()
defer queryGCMutex.Unlock()
if _, ok := queryGC[query]; ok {
delete(queryGC, query)
return true
}
return false
}
func (r *resolver) forwardQueryEnd(w dns.ResponseWriter, msg *dns.Msg) dns.ResponseWriter {
var (
cc clientConn
ok bool
)
proto := w.LocalAddr().Network()
func (r *resolver) forwardQueryEnd() {
r.queryLock.Lock()
defer r.queryLock.Unlock()
@ -602,22 +426,4 @@ func (r *resolver) forwardQueryEnd(w dns.ResponseWriter, msg *dns.Msg) dns.Respo
} else {
r.count--
}
switch proto {
case "tcp":
break
case "udp":
if cc, ok = r.client[msg.Id]; ok == false {
log.Debugf("Can't retrieve client context for dns id %v", msg.Id)
return nil
}
log.Debugf("dns msg id %v, client id %v", msg.Id, cc.dnsID)
delete(r.client, msg.Id)
msg.Id = cc.dnsID
w = cc.respWriter
default:
log.Errorf("Invalid protocol")
return nil
}
return w
}