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Refactor Windows SNAT flows for SNAT policy implementation (#1892)
Separate common flows and Windows only flows for SNAT. Add a new snatTable(71) between l3ForwardingTable and l3DecTTLTable(72) for looking up SNAT IPs of the external traffic.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| // +build !windows | ||
| // package openflow is needed by antctl which is compiled for macOS too. | ||
|
|
||
| // Copyright 2021 Antrea Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package openflow | ||
|
|
||
| import ( | ||
| "net" | ||
|
|
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| binding "github.com/vmware-tanzu/antrea/pkg/ovs/openflow" | ||
| ) | ||
|
|
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| func (c *client) InstallBridgeUplinkFlows() error { | ||
| return nil | ||
| } | ||
|
|
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| func (c *client) InstallLoadBalancerServiceFromOutsideFlows(svcIP net.IP, svcPort uint16, protocol binding.Protocol) error { | ||
| return nil | ||
| } | ||
|
|
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| func (c *client) UninstallLoadBalancerServiceFromOutsideFlows(svcIP net.IP, svcPort uint16, protocol binding.Protocol) error { | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| // +build windows | ||
| // package openflow is needed by antctl which is compiled for macOS too. | ||
|
|
||
| // Copyright 2021 Antrea Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
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| package openflow | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "net" | ||
|
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| "github.com/vmware-tanzu/antrea/pkg/agent/openflow/cookie" | ||
| binding "github.com/vmware-tanzu/antrea/pkg/ovs/openflow" | ||
| ) | ||
|
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| func (c *client) InstallBridgeUplinkFlows() error { | ||
| flows := c.hostBridgeUplinkFlows(*c.nodeConfig.PodIPv4CIDR, cookie.Default) | ||
| if err := c.ofEntryOperations.AddAll(flows); err != nil { | ||
| return err | ||
| } | ||
| c.hostNetworkingFlows = flows | ||
| return nil | ||
| } | ||
|
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| func (c *client) InstallLoadBalancerServiceFromOutsideFlows(svcIP net.IP, svcPort uint16, protocol binding.Protocol) error { | ||
| c.replayMutex.RLock() | ||
| defer c.replayMutex.RUnlock() | ||
| var flows []binding.Flow | ||
| flows = append(flows, c.loadBalancerServiceFromOutsideFlow(svcIP, svcPort, protocol)) | ||
| cacheKey := fmt.Sprintf("L%s%s%x", svcIP, protocol, svcPort) | ||
| return c.addFlows(c.serviceFlowCache, cacheKey, flows) | ||
| } | ||
|
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||
| func (c *client) UninstallLoadBalancerServiceFromOutsideFlows(svcIP net.IP, svcPort uint16, protocol binding.Protocol) error { | ||
| c.replayMutex.RLock() | ||
| defer c.replayMutex.RUnlock() | ||
| cacheKey := fmt.Sprintf("L%s%s%x", svcIP, protocol, svcPort) | ||
| return c.deleteFlows(c.serviceFlowCache, cacheKey) | ||
| } |
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