4 """network configuration"""
6 # system provided modules
7 import os, string, time, socket
9 # PlanetLab system modules
13 import bwlimit, logger, iptables, tools
15 # we can't do anything without a network
18 dev_default = tools.get_default_if()
20 def start(options, conf):
21 logger.log("net: plugin starting up...")
23 def GetSlivers(data, config, plc):
24 logger.verbose("net: GetSlivers called.")
25 if not 'interfaces' in data:
26 logger.log_missing_data('net.GetSlivers','interfaces')
28 plnet.InitInterfaces(logger, plc, data)
29 if 'OVERRIDES' in dir(config):
30 if config.OVERRIDES.get('net_max_rate') == '-1':
31 logger.log("net: Slice and node BW Limits disabled.")
32 if len(bwlimit.tc("class show dev %s" % dev_default)):
33 logger.verbose("net: *** DISABLING NODE BW LIMITS ***")
44 def InitNodeLimit(data):
46 # query running network interfaces
48 ips = dict(zip(devs.values(), devs.keys()))
51 macs[sioc.gifhwaddr(dev).lower()] = dev
53 for interface in data['interfaces']:
54 # Get interface name preferably from MAC address, falling
56 hwaddr=interface['mac']
57 if hwaddr <> None: hwaddr=hwaddr.lower()
59 dev = macs[interface['mac']]
60 elif interface['ip'] in ips:
61 dev = ips[interface['ip']]
63 logger.log('net: %s: no such interface with address %s/%s' % (interface['hostname'], interface['ip'], interface['mac']))
66 # Get current node cap
68 old_bwlimit = bwlimit.get_bwcap(dev)
72 # Get desired node cap
73 if interface['bwlimit'] is None or interface['bwlimit'] < 0:
74 new_bwlimit = bwlimit.bwmax
76 new_bwlimit = interface['bwlimit']
78 if old_bwlimit != new_bwlimit:
79 # Reinitialize bandwidth limits
80 bwlimit.init(dev, new_bwlimit)
82 # XXX This should trigger an rspec refresh in case
83 # some previously invalid sliver bwlimit is now valid
84 # again, or vice-versa.
86 def InitI2(plc, data):
87 if not 'groups' in data: return
89 if "Internet2" in data['groups']:
90 logger.log("net: This is an Internet2 node. Setting rules.")
92 i2nodeids = plc.GetNodeGroups(["Internet2"])[0]['node_ids']
93 for node in plc.GetInterfaces({"node_id": i2nodeids}, ["ip"]):
95 i2nodes.append(node['ip'])
96 # this will create the set if it doesn't already exist
97 # and add IPs that don't exist in the set rather than
98 # just recreateing the set.
99 bwlimit.exempt_init('Internet2', i2nodes)
101 # set the iptables classification rule if it doesnt exist.
102 cmd = '-A POSTROUTING -m set --set Internet2 dst -j CLASSIFY --set-class 0001:2000 --add-mark'
104 ipt = os.popen("/sbin/iptables-save")
105 for line in ipt.readlines(): rules.append(line.strip(" \n"))
108 logger.verbose("net: Adding iptables rule for Internet2")
109 os.popen("/sbin/iptables -t mangle " + cmd)
111 def InitNAT(plc, data):
113 # query running network interfaces
114 devs = sioc.gifconf()
115 ips = dict(zip(devs.values(), devs.keys()))
118 macs[sioc.gifhwaddr(dev).lower()] = dev
120 ipt = iptables.IPTables()
121 for interface in data['interfaces']:
122 # Get interface name preferably from MAC address, falling
123 # back on IP address.
124 hwaddr=interface['mac']
125 if hwaddr <> None: hwaddr=hwaddr.lower()
127 dev = macs[interface['mac']]
128 elif interface['ip'] in ips:
129 dev = ips[interface['ip']]
131 logger.log('net: %s: no such interface with address %s/%s' % (interface['hostname'], interface['ip'], interface['mac']))
135 settings = plc.GetInterfaceTags({'interface_tag_id': interface['interface_tag_ids']})
139 for setting in settings:
140 if setting['category'].upper() != 'FIREWALL':
142 if setting['name'].upper() == 'EXTERNAL':
143 # Enable NAT for this interface
145 elif setting['name'].upper() == 'INTERNAL':
147 elif setting['name'].upper() == 'PF': # XXX Uglier code is hard to find...
148 for pf in setting['value'].split("\n"):
150 for field in pf.split(","):
151 (key, val) = field.split("=", 2)
153 if 'new_dport' not in fields:
154 fields['new_dport'] = fields['dport']
155 if 'source' not in fields:
156 fields['source'] = "0.0.0.0/0"
160 def start(options, config):