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()
21 # band-aid for short period as old API returns networks instead of interfaces
24 logger.log("net: plugin starting up...")
26 def GetSlivers(data, config, plc):
29 KEY_NAME = "interfaces"
32 logger.verbose("net: GetSlivers called.")
33 if not 'interfaces' in data:
35 # band-aid for short period as old API returns networks instead of interfaces
36 # logger.log_missing_data('net.GetSlivers','interfaces')
38 if not 'networks' in data:
39 logger.log_missing_data('net.GetSlivers','interfaces')
45 plnet.InitInterfaces(logger, plc, data)
46 if 'OVERRIDES' in dir(config):
47 if config.OVERRIDES.get('net_max_rate') == '-1':
48 logger.log("net: Slice and node BW Limits disabled.")
49 if len(bwlimit.tc("class show dev %s" % dev_default)):
50 logger.verbose("net: *** DISABLING NODE BW LIMITS ***")
61 def InitNodeLimit(data):
63 # query running network interfaces
65 ips = dict(zip(devs.values(), devs.keys()))
68 macs[sioc.gifhwaddr(dev).lower()] = dev
70 for interface in data[KEY_NAME]:
71 # Get interface name preferably from MAC address, falling
73 hwaddr=interface['mac']
74 if hwaddr <> None: hwaddr=hwaddr.lower()
76 dev = macs[interface['mac']]
77 elif interface['ip'] in ips:
78 dev = ips[interface['ip']]
80 logger.log('net: %s: no such interface with address %s/%s' % (interface['hostname'], interface['ip'], interface['mac']))
83 # Get current node cap
85 old_bwlimit = bwlimit.get_bwcap(dev)
89 # Get desired node cap
90 if interface['bwlimit'] is None or interface['bwlimit'] < 0:
91 new_bwlimit = bwlimit.bwmax
93 new_bwlimit = interface['bwlimit']
95 if old_bwlimit != new_bwlimit:
96 # Reinitialize bandwidth limits
97 bwlimit.init(dev, new_bwlimit)
99 # XXX This should trigger an rspec refresh in case
100 # some previously invalid sliver bwlimit is now valid
101 # again, or vice-versa.
103 def InitI2(plc, data):
104 if not 'groups' in data: return
106 if "Internet2" in data['groups']:
107 logger.log("net: This is an Internet2 node. Setting rules.")
109 i2nodeids = plc.GetNodeGroups(["Internet2"])[0]['node_ids']
110 for node in plc.GetInterfaces({"node_id": i2nodeids}, ["ip"]):
112 i2nodes.append(node['ip'])
113 # this will create the set if it doesn't already exist
114 # and add IPs that don't exist in the set rather than
115 # just recreateing the set.
116 bwlimit.exempt_init('Internet2', i2nodes)
118 # set the iptables classification rule if it doesnt exist.
119 cmd = '-A POSTROUTING -m set --set Internet2 dst -j CLASSIFY --set-class 0001:2000 --add-mark'
121 ipt = os.popen("/sbin/iptables-save")
122 for line in ipt.readlines(): rules.append(line.strip(" \n"))
125 logger.verbose("net: Adding iptables rule for Internet2")
126 os.popen("/sbin/iptables -t mangle " + cmd)
128 def InitNAT(plc, data):
130 # query running network interfaces
131 devs = sioc.gifconf()
132 ips = dict(zip(devs.values(), devs.keys()))
135 macs[sioc.gifhwaddr(dev).lower()] = dev
137 ipt = iptables.IPTables()
138 for interface in data[KEY_NAME]:
139 # Get interface name preferably from MAC address, falling
140 # back on IP address.
141 hwaddr=interface['mac']
142 if hwaddr <> None: hwaddr=hwaddr.lower()
144 dev = macs[interface['mac']]
145 elif interface['ip'] in ips:
146 dev = ips[interface['ip']]
148 logger.log('net: %s: no such interface with address %s/%s' % (interface['hostname'], interface['ip'], interface['mac']))
152 settings = plc.GetInterfaceTags({'interface_tag_id': interface['interface_tag_ids']})
156 for setting in settings:
157 if setting['category'].upper() != 'FIREWALL':
159 if setting['name'].upper() == 'EXTERNAL':
160 # Enable NAT for this interface
162 elif setting['name'].upper() == 'INTERNAL':
164 elif setting['name'].upper() == 'PF': # XXX Uglier code is hard to find...
165 for pf in setting['value'].split("\n"):
167 for field in pf.split(","):
168 (key, val) = field.split("=", 2)
170 if 'new_dport' not in fields:
171 fields['new_dport'] = fields['dport']
172 if 'source' not in fields:
173 fields['source'] = "0.0.0.0/0"