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b453aa65fa
commit a0807e7cfe configured golangci-lint
to use go1.23 semantics, which alowed linters like `copyloopvar` to lint
using thee correct semantics.
go1.22 now creates a copy of variables when assigned in a loop; make sure we
don't have files that may downgrade semantics to go1.21 in case that also means
disabling that feature; https://go.dev/ref/spec#Go_1.22
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
56 lines
1.8 KiB
Go
56 lines
1.8 KiB
Go
// FIXME(thaJeztah): remove once we are a module; the go:build directive prevents go from downgrading language version to go1.16:
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//go:build go1.22
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// Package ipamutils provides utility functions for ipam management
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package ipamutils
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import (
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"net/netip"
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"slices"
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)
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var (
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localScopeDefaultNetworks = []*NetworkToSplit{
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{netip.MustParsePrefix("172.17.0.0/16"), 16},
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{netip.MustParsePrefix("172.18.0.0/16"), 16},
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{netip.MustParsePrefix("172.19.0.0/16"), 16},
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{netip.MustParsePrefix("172.20.0.0/14"), 16},
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{netip.MustParsePrefix("172.24.0.0/14"), 16},
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{netip.MustParsePrefix("172.28.0.0/14"), 16},
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{netip.MustParsePrefix("192.168.0.0/16"), 20},
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}
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globalScopeDefaultNetworks = []*NetworkToSplit{
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{netip.MustParsePrefix("10.0.0.0/8"), 24},
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}
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)
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// NetworkToSplit represent a network that has to be split in chunks with mask length Size.
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// Each subnet in the set is derived from the Base pool. Base is to be passed
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// in CIDR format.
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// Example: a Base "10.10.0.0/16 with Size 24 will define the set of 256
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// 10.10.[0-255].0/24 address pools
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type NetworkToSplit struct {
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Base netip.Prefix `json:"base"`
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Size int `json:"size"`
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}
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// FirstPrefix returns the first prefix available in NetworkToSplit.
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func (n NetworkToSplit) FirstPrefix() netip.Prefix {
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return netip.PrefixFrom(n.Base.Addr(), n.Size)
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}
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// Overlaps is a util function checking whether 'p' overlaps with 'n'.
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func (n NetworkToSplit) Overlaps(p netip.Prefix) bool {
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return n.Base.Overlaps(p)
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}
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// GetGlobalScopeDefaultNetworks returns a copy of the global-scope network list.
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func GetGlobalScopeDefaultNetworks() []*NetworkToSplit {
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return slices.Clone(globalScopeDefaultNetworks)
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}
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// GetLocalScopeDefaultNetworks returns a copy of the default local-scope network list.
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func GetLocalScopeDefaultNetworks() []*NetworkToSplit {
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return slices.Clone(localScopeDefaultNetworks)
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}
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