47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
package bridge
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import (
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"github.com/vishvananda/netlink"
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)
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func setupVerifyAndReconcile(config *networkConfiguration, i *bridgeInterface) error {
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// Fetch a single IPv4 and a slice of IPv6 addresses from the bridge.
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addrv4, addrsv6, err := i.addresses()
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if err != nil {
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return err
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}
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// Verify that the bridge does have an IPv4 address.
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if addrv4.IPNet == nil {
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return &ErrNoIPAddr{}
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}
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// Verify that the bridge IPv4 address matches the requested configuration.
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if config.AddressIPv4 != nil && !addrv4.IP.Equal(config.AddressIPv4.IP) {
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return &IPv4AddrNoMatchError{IP: addrv4.IP, CfgIP: config.AddressIPv4.IP}
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}
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// Verify that one of the bridge IPv6 addresses matches the requested
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// configuration.
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if config.EnableIPv6 && !findIPv6Address(netlink.Addr{IPNet: bridgeIPv6}, addrsv6) {
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return (*IPv6AddrNoMatchError)(bridgeIPv6)
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}
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// By this time we have either configured a new bridge with an IP address
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// or made sure an existing bridge's IP matches the configuration
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// Now is the time to cache these states in the bridgeInterface.
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i.bridgeIPv4 = addrv4.IPNet
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i.bridgeIPv6 = bridgeIPv6
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return nil
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}
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func findIPv6Address(addr netlink.Addr, addresses []netlink.Addr) bool {
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for _, addrv6 := range addresses {
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if addrv6.String() == addr.String() {
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return true
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}
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}
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return false
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}
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