1 """network configuration"""
3 # system provided modules
4 import os, string, time, socket
6 # PlanetLab system modules
10 import bwlimit, logger, iptables, tools
12 # we can't do anything without a network
15 dev_default = tools.get_default_if()
19 logger.log("net: plugin starting up...")
21 def GetSlivers(data, config, plc):
23 # band-aid for short period as old API returns networks instead of interfaces
25 KEY_NAME = "interfaces"
28 logger.verbose("net: GetSlivers called.")
29 if not 'interfaces' in data:
31 # band-aid for short period as old API returns networks instead of interfaces
32 # logger.log_missing_data('net.GetSlivers','interfaces')
34 if not 'networks' in data:
35 logger.log_missing_data('net.GetSlivers','interfaces')
41 plnet.InitInterfaces(logger, plc, data)
42 if 'OVERRIDES' in dir(config):
43 if config.OVERRIDES.get('net_max_rate') == '-1':
44 logger.log("net: Slice and node BW Limits disabled.")
45 if len(bwlimit.tc("class show dev %s" % dev_default)):
46 logger.verbose("net: *** DISABLING NODE BW LIMITS ***")
57 def InitNodeLimit(data):
59 # query running network interfaces
61 ips = dict(zip(devs.values(), devs.keys()))
64 macs[sioc.gifhwaddr(dev).lower()] = dev
66 for interface in data[KEY_NAME]:
67 # Get interface name preferably from MAC address, falling
69 hwaddr=interface['mac']
70 if hwaddr <> None: hwaddr=hwaddr.lower()
72 dev = macs[interface['mac']]
73 elif interface['ip'] in ips:
74 dev = ips[interface['ip']]
76 logger.log('net: %s: no such interface with address %s/%s' % (interface['hostname'], interface['ip'], interface['mac']))
79 # Get current node cap
81 old_bwlimit = bwlimit.get_bwcap(dev)
85 # Get desired node cap
86 if interface['bwlimit'] is None or interface['bwlimit'] < 0:
87 new_bwlimit = bwlimit.bwmax
89 new_bwlimit = interface['bwlimit']
91 if old_bwlimit != new_bwlimit:
92 # Reinitialize bandwidth limits
93 bwlimit.init(dev, new_bwlimit)
95 # XXX This should trigger an rspec refresh in case
96 # some previously invalid sliver bwlimit is now valid
97 # again, or vice-versa.
99 def InitI2(plc, data):
100 if not 'groups' in data: return
102 if "Internet2" in data['groups']:
103 logger.log("net: This is an Internet2 node. Setting rules.")
105 i2nodeids = plc.GetNodeGroups(["Internet2"])[0]['node_ids']
106 for node in plc.GetInterfaces({"node_id": i2nodeids}, ["ip"]):
108 i2nodes.append(node['ip'])
109 # this will create the set if it doesn't already exist
110 # and add IPs that don't exist in the set rather than
111 # just recreateing the set.
112 bwlimit.exempt_init('Internet2', i2nodes)
114 # set the iptables classification rule if it doesnt exist.
115 cmd = '-A POSTROUTING -m set --set Internet2 dst -j CLASSIFY --set-class 0001:2000 --add-mark'
117 ipt = os.popen("/sbin/iptables-save")
118 for line in ipt.readlines(): rules.append(line.strip(" \n"))
121 logger.verbose("net: Adding iptables rule for Internet2")
122 os.popen("/sbin/iptables -t mangle " + cmd)
124 def InitNAT(plc, data):
126 # query running network interfaces
127 devs = sioc.gifconf()
128 ips = dict(zip(devs.values(), devs.keys()))
131 macs[sioc.gifhwaddr(dev).lower()] = dev
133 ipt = iptables.IPTables()
134 for interface in data[KEY_NAME]:
135 # Get interface name preferably from MAC address, falling
136 # back on IP address.
137 hwaddr=interface['mac']
138 if hwaddr <> None: hwaddr=hwaddr.lower()
140 dev = macs[interface['mac']]
141 elif interface['ip'] in ips:
142 dev = ips[interface['ip']]
144 logger.log('net: %s: no such interface with address %s/%s' % (interface['hostname'], interface['ip'], interface['mac']))
148 settings = plc.GetInterfaceTags({'interface_tag_id': interface['interface_tag_ids']})
152 for setting in settings:
153 if setting['category'].upper() != 'FIREWALL':
155 if setting['name'].upper() == 'EXTERNAL':
156 # Enable NAT for this interface
158 elif setting['name'].upper() == 'INTERNAL':
160 elif setting['name'].upper() == 'PF': # XXX Uglier code is hard to find...
161 for pf in setting['value'].split("\n"):
163 for field in pf.split(","):
164 (key, val) = field.split("=", 2)
166 if 'new_dport' not in fields:
167 fields['new_dport'] = fields['dport']
168 if 'source' not in fields:
169 fields['source'] = "0.0.0.0/0"