5 """network configuration"""
7 # system provided modules
8 import os, string, time, socket
10 # PlanetLab system modules
14 import bwlimit, logger, iptables
16 def start(options, conf):
17 logger.log("net plugin starting up...")
19 def GetSlivers(data, config, plc):
20 logger.verbose("net:GetSlivers called.")
21 InitInterfaces(plc, data) # writes sysconfig files.
22 if 'OVERRIDES' in dir(config):
23 if config.OVERRIDES.get('net_max_rate') == '-1':
24 logger.log("net: Slice and node BW Limits disabled.")
25 if len(bwlimit.tc("class show dev eth0")):
26 logger.verbose("*** DISABLING NODE BW LIMITS ***")
37 def InitNodeLimit(data):
38 if not 'networks' in data: return
40 # query running network interfaces
42 ips = dict(zip(devs.values(), devs.keys()))
45 macs[sioc.gifhwaddr(dev).lower()] = dev
47 for network in data['networks']:
48 # Get interface name preferably from MAC address, falling
51 if hwaddr <> None: hwaddr=hwaddr.lower()
53 dev = macs[network['mac']]
54 elif network['ip'] in ips:
55 dev = ips[network['ip']]
57 logger.log('%s: no such interface with address %s/%s' % (network['hostname'], network['ip'], network['mac']))
60 # Get current node cap
62 old_bwlimit = bwlimit.get_bwcap(dev)
66 # Get desired node cap
67 if network['bwlimit'] is None or network['bwlimit'] < 0:
68 new_bwlimit = bwlimit.bwmax
70 new_bwlimit = network['bwlimit']
72 if old_bwlimit != new_bwlimit:
73 # Reinitialize bandwidth limits
74 bwlimit.init(dev, new_bwlimit)
76 # XXX This should trigger an rspec refresh in case
77 # some previously invalid sliver bwlimit is now valid
78 # again, or vice-versa.
80 def InitI2(plc, data):
81 if not 'groups' in data: return
83 if "Internet2" in data['groups']:
84 logger.log("This is an Internet2 node. Setting rules.")
86 i2nodeids = plc.GetNodeGroups(["Internet2"])[0]['node_ids']
87 for node in plc.GetInterfaces({"node_id": i2nodeids}, ["ip"]):
89 i2nodes.append(node['ip'])
90 # this will create the set if it doesn't already exist
91 # and add IPs that don't exist in the set rather than
92 # just recreateing the set.
93 bwlimit.exempt_init('Internet2', i2nodes)
95 # set the iptables classification rule if it doesnt exist.
96 cmd = '-A POSTROUTING -m set --set Internet2 dst -j CLASSIFY --set-class 0001:2000 --add-mark'
98 ipt = os.popen("/sbin/iptables-save")
99 for line in ipt.readlines(): rules.append(line.strip(" \n"))
102 logger.verbose("net: Adding iptables rule for Internet2")
103 os.popen("/sbin/iptables -t mangle " + cmd)
105 def InitNAT(plc, data):
106 if not 'networks' in data: return
108 # query running network interfaces
109 devs = sioc.gifconf()
110 ips = dict(zip(devs.values(), devs.keys()))
113 macs[sioc.gifhwaddr(dev).lower()] = dev
115 ipt = iptables.IPTables()
116 for network in data['networks']:
117 # Get interface name preferably from MAC address, falling
118 # back on IP address.
119 hwaddr=network['mac']
120 if hwaddr <> None: hwaddr=hwaddr.lower()
122 dev = macs[network['mac']]
123 elif network['ip'] in ips:
124 dev = ips[network['ip']]
126 logger.log('%s: no such interface with address %s/%s' % (network['hostname'], network['ip'], network['mac']))
130 settings = plc.GetInterfaceTags({'interface_tag_id': network['interface_tag_ids']})
134 for setting in settings:
135 if setting['category'].upper() != 'FIREWALL':
137 if setting['name'].upper() == 'EXTERNAL':
138 # Enable NAT for this interface
140 elif setting['name'].upper() == 'INTERNAL':
142 elif setting['name'].upper() == 'PF': # XXX Uglier code is hard to find...
143 for pf in setting['value'].split("\n"):
145 for field in pf.split(","):
146 (key, val) = field.split("=", 2)
148 if 'new_dport' not in fields:
149 fields['new_dport'] = fields['dport']
150 if 'source' not in fields:
151 fields['source'] = "0.0.0.0/0"
155 def InitInterfaces(plc, data):
156 if not 'networks' in data: return
157 plnet.InitInterfaces(logger, plc, data)
159 def start(options, config):