ITQC/containernetworking-plugins
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plugins: set MAC addresses based on IP

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This will give deterministic MAC addresses for all interfaces CNI
creates and manages the IP for:
* bridge: container veth and host bridge
* macvlan: container veth
* ptp: container veth and host veth
This commit is contained in:
Stefan Junker
2016-06-28 17:46:17 -07:00
parent 3a1354cff6
commit 924b30b57d
7 changed files with 69 additions and 42 deletions
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12
pkg/utils/hwaddr/hwaddr_test.go
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@ -28,26 +28,26 @@ var _ = Describe("Hwaddr", func() {
It("generate hardware address based on ipv4 address", func() {
testCases := []struct {
ip net.IP
expectedMAC string
expectedMAC net.HardwareAddr
}{
{
ip: net.ParseIP("10.0.0.2"),
expectedMAC: hwaddr.PrivateMACPrefix + ":0a:00:00:02",
expectedMAC: (net.HardwareAddr)(append(hwaddr.PrivateMACPrefix, 0x0a, 0x00, 0x00, 0x02)),
},
{
ip: net.ParseIP("10.250.0.244"),
expectedMAC: hwaddr.PrivateMACPrefix + ":0a:fa:00:f4",
expectedMAC: (net.HardwareAddr)(append(hwaddr.PrivateMACPrefix, 0x0a, 0xfa, 0x00, 0xf4)),
},
{
ip: net.ParseIP("172.17.0.2"),
expectedMAC: hwaddr.PrivateMACPrefix + ":ac:11:00:02",
expectedMAC: (net.HardwareAddr)(append(hwaddr.PrivateMACPrefix, 0xac, 0x11, 0x00, 0x02)),
},
}
for _, tc := range testCases {
mac, err := hwaddr.GenerateHardwareAddr4(tc.ip, hwaddr.PrivateMACPrefix)
Expect(err).NotTo(HaveOccurred())
Expect(mac.String()).To(Equal(tc.expectedMAC))
Expect(mac).To(Equal(tc.expectedMAC))
}
})
@ -63,7 +63,7 @@ var _ = Describe("Hwaddr", func() {
})
It("return error if prefix is invalid", func() {
_, err := hwaddr.GenerateHardwareAddr4(net.ParseIP("10.0.0.2"), "")
_, err := hwaddr.GenerateHardwareAddr4(net.ParseIP("10.0.0.2"), []byte{0x58})
Expect(err).To(BeAssignableToTypeOf(hwaddr.InvalidPrefixLengthErr{}))
})
})