1 """network configuration"""
3 # system provided modules
4 import os, string, time, socket
6 # PlanetLab system modules
10 import plnode.bwlimit as bwlimit
11 import logger, iptables, tools
13 # we can't do anything without a network
16 dev_default = tools.get_default_if()
20 logger.log("net: plugin starting up...")
22 def GetSlivers(data, config, plc):
24 # band-aid for short period as old API returns networks instead of interfaces
26 KEY_NAME = "interfaces"
29 logger.verbose("net: GetSlivers called.")
30 if not 'interfaces' in data:
32 # band-aid for short period as old API returns networks instead of interfaces
33 # logger.log_missing_data('net.GetSlivers','interfaces')
35 if not 'networks' in data:
36 logger.log_missing_data('net.GetSlivers','interfaces')
42 plnet.InitInterfaces(logger, plc, data)
43 if 'OVERRIDES' in dir(config):
44 if config.OVERRIDES.get('net_max_rate') == '-1':
45 logger.log("net: Slice and node BW Limits disabled.")
46 if len(bwlimit.tc("class show dev %s" % dev_default)):
47 logger.verbose("net: *** DISABLING NODE BW LIMITS ***")
58 def InitNodeLimit(data):
60 # query running network interfaces
62 ips = dict(zip(devs.values(), devs.keys()))
65 macs[sioc.gifhwaddr(dev).lower()] = dev
67 for interface in data[KEY_NAME]:
68 # Get interface name preferably from MAC address, falling
70 hwaddr=interface['mac']
71 if hwaddr <> None: hwaddr=hwaddr.lower()
73 dev = macs[interface['mac']]
74 elif interface['ip'] in ips:
75 dev = ips[interface['ip']]
77 logger.log('net: %s: no such interface with address %s/%s' % (interface['hostname'], interface['ip'], interface['mac']))
80 # Get current node cap
82 old_bwlimit = bwlimit.get_bwcap(dev)
86 # Get desired node cap
87 if interface['bwlimit'] is None or interface['bwlimit'] < 0:
88 new_bwlimit = bwlimit.bwmax
90 new_bwlimit = interface['bwlimit']
92 if old_bwlimit != new_bwlimit:
93 # Reinitialize bandwidth limits
94 bwlimit.init(dev, new_bwlimit)
96 # XXX This should trigger an rspec refresh in case
97 # some previously invalid sliver bwlimit is now valid
98 # again, or vice-versa.
100 def InitI2(plc, data):
101 if not 'groups' in data: return
103 if "Internet2" in data['groups']:
104 logger.log("net: This is an Internet2 node. Setting rules.")
106 i2nodeids = plc.GetNodeGroups(["Internet2"])[0]['node_ids']
107 for node in plc.GetInterfaces({"node_id": i2nodeids}, ["ip"]):
109 i2nodes.append(node['ip'])
110 # this will create the set if it doesn't already exist
111 # and add IPs that don't exist in the set rather than
112 # just recreateing the set.
113 bwlimit.exempt_init('Internet2', i2nodes)
115 # set the iptables classification rule if it doesnt exist.
116 cmd = '-A POSTROUTING -m set --set Internet2 dst -j CLASSIFY --set-class 0001:2000 --add-mark'
118 ipt = os.popen("/sbin/iptables-save")
119 for line in ipt.readlines(): rules.append(line.strip(" \n"))
122 logger.verbose("net: Adding iptables rule for Internet2")
123 os.popen("/sbin/iptables -t mangle " + cmd)
125 def InitNAT(plc, data):
127 # query running network interfaces
128 devs = sioc.gifconf()
129 ips = dict(zip(devs.values(), devs.keys()))
132 macs[sioc.gifhwaddr(dev).lower()] = dev
134 ipt = iptables.IPTables()
135 for interface in data[KEY_NAME]:
136 # Get interface name preferably from MAC address, falling
137 # back on IP address.
138 hwaddr=interface['mac']
139 if hwaddr <> None: hwaddr=hwaddr.lower()
141 dev = macs[interface['mac']]
142 elif interface['ip'] in ips:
143 dev = ips[interface['ip']]
145 logger.log('net: %s: no such interface with address %s/%s' % (interface['hostname'], interface['ip'], interface['mac']))
149 settings = plc.GetInterfaceTags({'interface_tag_id': interface['interface_tag_ids']})
153 for setting in settings:
154 if setting['category'].upper() != 'FIREWALL':
156 if setting['name'].upper() == 'EXTERNAL':
157 # Enable NAT for this interface
159 elif setting['name'].upper() == 'INTERNAL':
161 elif setting['name'].upper() == 'PF': # XXX Uglier code is hard to find...
162 for pf in setting['value'].split("\n"):
164 for field in pf.split(","):
165 (key, val) = field.split("=", 2)
167 if 'new_dport' not in fields:
168 fields['new_dport'] = fields['dport']
169 if 'source' not in fields:
170 fields['source'] = "0.0.0.0/0"