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authorDouglas Jordan <dojordan@microsoft.com>2018-01-24 16:10:08 -0700
committerChad Smith <chad.smith@canonical.com>2018-01-24 16:10:08 -0700
commitc03bdd3d8ed762cada813c5e95a40b14d2047b57 (patch)
tree708422bb64a8804f649ad7558d5088f9e11011a4 /cloudinit/net/network_state.py
parent30597f28512fafbe25486df5865b628d859486c6 (diff)
downloadvyos-cloud-init-c03bdd3d8ed762cada813c5e95a40b14d2047b57.tar.gz
vyos-cloud-init-c03bdd3d8ed762cada813c5e95a40b14d2047b57.zip
Azure VM Preprovisioning support.
This change will enable azure vms to report provisioning has completed twice, first to tell the fabric it has completed then a second time to enable customer settings. The datasource for the second provisioning is the Instance Metadata Service (IMDS),and the VM will poll indefinitely for the new ovf-env.xml from IMDS. This branch introduces EphemeralDHCPv4 which encapsulates common logic used by both DataSourceEc2 an DataSourceAzure for temporary DHCP interactions without side-effects. LP: #1734991
Diffstat (limited to 'cloudinit/net/network_state.py')
-rw-r--r--cloudinit/net/network_state.py12
1 files changed, 12 insertions, 0 deletions
diff --git a/cloudinit/net/network_state.py b/cloudinit/net/network_state.py
index 31738c73..fe667d88 100644
--- a/cloudinit/net/network_state.py
+++ b/cloudinit/net/network_state.py
@@ -961,4 +961,16 @@ def mask_to_net_prefix(mask):
return ipv4_mask_to_net_prefix(mask)
+def mask_and_ipv4_to_bcast_addr(mask, ip):
+ """Calculate the broadcast address from the subnet mask and ip addr.
+
+ Supports ipv4 only."""
+ ip_bin = int(''.join([bin(int(x) + 256)[3:] for x in ip.split('.')]), 2)
+ mask_dec = ipv4_mask_to_net_prefix(mask)
+ bcast_bin = ip_bin | (2**(32 - mask_dec) - 1)
+ bcast_str = '.'.join([str(bcast_bin >> (i << 3) & 0xFF)
+ for i in range(4)[::-1]])
+ return bcast_str
+
+
# vi: ts=4 expandtab