1 """network configuration"""
3 # system provided modules
4 import os, string, time, socket
6 # PlanetLab system modules
10 try: import bwlimit as bwlimit
11 except: import bwlimitlxc as bwlimit
12 import logger, iptables, tools
14 # we can't do anything without a network
17 dev_default = tools.get_default_if()
21 logger.log("net: plugin starting up...")
23 def GetSlivers(data, config, plc):
25 # band-aid for short period as old API returns networks instead of interfaces
27 KEY_NAME = "interfaces"
30 logger.verbose("net: GetSlivers called.")
31 if not 'interfaces' in data:
33 # band-aid for short period as old API returns networks instead of interfaces
34 # logger.log_missing_data('net.GetSlivers','interfaces')
36 if not 'networks' in data:
37 logger.log_missing_data('net.GetSlivers','interfaces')
43 plnet.InitInterfaces(logger, plc, data)
44 if 'OVERRIDES' in dir(config):
45 if config.OVERRIDES.get('net_max_rate') == '-1':
46 logger.log("net: Slice and node BW Limits disabled.")
47 if len(bwlimit.tc("class show dev %s" % dev_default)):
48 logger.verbose("net: *** DISABLING NODE BW LIMITS ***")
59 def InitNodeLimit(data):
61 # query running network interfaces
63 ips = dict(zip(devs.values(), devs.keys()))
66 macs[sioc.gifhwaddr(dev).lower()] = dev
68 for interface in data[KEY_NAME]:
69 # Get interface name preferably from MAC address, falling
71 hwaddr=interface['mac']
72 if hwaddr <> None: hwaddr=hwaddr.lower()
74 dev = macs[interface['mac']]
75 elif interface['ip'] in ips:
76 dev = ips[interface['ip']]
78 logger.log('net: %s: no such interface with address %s/%s' % (interface['hostname'], interface['ip'], interface['mac']))
81 # Get current node cap
83 old_bwlimit = bwlimit.get_bwcap(dev)
87 # Get desired node cap
88 if interface['bwlimit'] is None or interface['bwlimit'] < 0:
89 new_bwlimit = bwlimit.bwmax
91 new_bwlimit = interface['bwlimit']
93 if old_bwlimit != new_bwlimit:
94 # Reinitialize bandwidth limits
95 bwlimit.init(dev, new_bwlimit)
97 # XXX This should trigger an rspec refresh in case
98 # some previously invalid sliver bwlimit is now valid
99 # again, or vice-versa.
101 def InitI2(plc, data):
102 if not 'groups' in data: return
104 if "Internet2" in data['groups']:
105 logger.log("net: This is an Internet2 node. Setting rules.")
107 i2nodeids = plc.GetNodeGroups(["Internet2"])[0]['node_ids']
108 for node in plc.GetInterfaces({"node_id": i2nodeids}, ["ip"]):
110 i2nodes.append(node['ip'])
111 # this will create the set if it doesn't already exist
112 # and add IPs that don't exist in the set rather than
113 # just recreateing the set.
114 bwlimit.exempt_init('Internet2', i2nodes)
116 # set the iptables classification rule if it doesnt exist.
117 cmd = '-A POSTROUTING -m set --set Internet2 dst -j CLASSIFY --set-class 0001:2000 --add-mark'
119 ipt = os.popen("/sbin/iptables-save")
120 for line in ipt.readlines(): rules.append(line.strip(" \n"))
123 logger.verbose("net: Adding iptables rule for Internet2")
124 os.popen("/sbin/iptables -t mangle " + cmd)
126 def InitNAT(plc, data):
128 # query running network interfaces
129 devs = sioc.gifconf()
130 ips = dict(zip(devs.values(), devs.keys()))
133 macs[sioc.gifhwaddr(dev).lower()] = dev
135 ipt = iptables.IPTables()
136 for interface in data[KEY_NAME]:
137 # Get interface name preferably from MAC address, falling
138 # back on IP address.
139 hwaddr=interface['mac']
140 if hwaddr <> None: hwaddr=hwaddr.lower()
142 dev = macs[interface['mac']]
143 elif interface['ip'] in ips:
144 dev = ips[interface['ip']]
146 logger.log('net: %s: no such interface with address %s/%s' % (interface['hostname'], interface['ip'], interface['mac']))
150 settings = plc.GetInterfaceTags({'interface_tag_id': interface['interface_tag_ids']})
154 for setting in settings:
155 if setting['category'].upper() != 'FIREWALL':
157 if setting['name'].upper() == 'EXTERNAL':
158 # Enable NAT for this interface
160 elif setting['name'].upper() == 'INTERNAL':
162 elif setting['name'].upper() == 'PF': # XXX Uglier code is hard to find...
163 for pf in setting['value'].split("\n"):
165 for field in pf.split(","):
166 (key, val) = field.split("=", 2)
168 if 'new_dport' not in fields:
169 fields['new_dport'] = fields['dport']
170 if 'source' not in fields:
171 fields['source'] = "0.0.0.0/0"