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fix: [CNI] NAT hostPort mapping for HNSv2 #1922

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merged 9 commits into from
May 1, 2023
+17 −1
Merged

fix: [CNI] NAT hostPort mapping for HNSv2 #1922

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59d4fdf
NAT update
Apr 17, 2023
e272000
NAT update
Apr 20, 2023
623cf13
Cleaning up and unit test
Apr 20, 2023
75d325d
Fix Lint
Apr 20, 2023
c371e77
Fix Lint
Apr 20, 2023
f72a741
Fix Lint - Addr. comments
Apr 20, 2023
98dad95
Merge branch 'master' into portmapping
tamilmani1989 Apr 21, 2023
4cb02d4
Merge branch 'master' into portmapping
paulyufan2 Apr 30, 2023
3ccc844
Merge branch 'master' into portmapping
paulyufan2 May 1, 2023
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1 change: 1 addition & 0 deletions cni/network/network_windows.go
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Original file line number Diff line number Diff line change
Expand Up @@ -257,6 +257,7 @@ func getPoliciesFromRuntimeCfg(nwCfg *cni.NetworkConfig) []policy.Policy {
InternalPort: uint16(mapping.ContainerPort),
VIP: mapping.HostIp,
Protocol: protocol,
Flags: hnsv2.NatFlagsLocalRoutedVip, // iota'd, NatFlagsLocalRoutedVip = 1, uint32
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Is this a constant value ? What does this mean ? ( Just curious)

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@jpayne3506 jpayne3506 Apr 20, 2023 •
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It is a constant value set here https://github.com/microsoft/hcsshim/blob/298b31d151ab799c1d7686f8ee9eec1cb4213926/hcn/hcnpolicy.go#L82 .
Was trying to match other code snippets in cni where they match the TCP/UDP to constant values as well.

I could remove the iota'd comment and change it to // uint32 NatFlagsLocalRoutedVip = 1 if that makes it more clear.

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can you add a comment above this change saying "its to support hostport policy mapping"

})

hnsv2Policy, _ := json.Marshal(&hnsv2.EndpointPolicy{
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13 changes: 13 additions & 0 deletions cni/network/network_windows_test.go
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Expand Up @@ -235,6 +235,19 @@ func TestSetPoliciesFromNwCfg(t *testing.T) {
},
},
},
{
name: "Runtime hostPort mapping polices",
nwCfg: cni.NetworkConfig{
RuntimeConfig: cni.RuntimeConfig{
PortMappings: []cni.PortMapping{
{
Protocol: "tcp",
HostPort: 44000,
ContainerPort: 80,
},
},
},
},
}

for _, tt := range tests {
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