| # Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import logging, re |
| |
| def isLinuxRouter(router): |
| router_uname = router.run('uname').stdout |
| return re.search('Linux', router_uname) |
| |
| class LinuxRouter(object): |
| """ |
| Linux/mac80211-style WiFi Router support for WiFiTest class. |
| |
| This class implements test methods/steps that communicate with a |
| router implemented with Linux/mac80211. The router must |
| be pre-configured to enable ssh access and have a mac80211-based |
| wireless device. We also assume hostapd 0.7.x and iw are present |
| and any necessary modules are pre-loaded. |
| """ |
| |
| |
| def __init__(self, host, params, defssid): |
| # Command locations. |
| self.cmd_iw = "/usr/sbin/iw" |
| self.cmd_ip = "/usr/sbin/ip" |
| self.cmd_brctl = "/usr/sbin/brctl" |
| self.cmd_hostapd = "/usr/sbin/hostapd" |
| |
| # Router host. |
| self.router = host |
| |
| # Network interfaces. |
| self.bridgeif = params.get('bridgedev', "br-lan") |
| self.wiredif = params.get('wiredev', "eth1") |
| self.wlanif2 = "wlan2" |
| self.wlanif5 = "wlan5" |
| |
| # Default to 1st available wireless phy. |
| if "phydev2" not in params: |
| output = self.router.run("%s list" % self.cmd_iw).stdout |
| test = re.compile("Wiphy (.*)") |
| for line in output.splitlines(): |
| m = test.match(line) |
| if m: |
| self.phydev2 = m.group(1) |
| self.phydev5 = self.phydev2 |
| break |
| else: |
| raise error.TestFail("No Wireless NIC detected on the device") |
| else: |
| self.phydev2 = params['phydev2'] |
| self.phydev5 = params.get('phydev5', self.phydev2) |
| |
| |
| # hostapd configuration persists throughout the test, subsequent |
| # 'config' commands only modify it. |
| self.hostapd = { |
| 'configured': False, |
| 'file': "/tmp/hostapd-test.conf", |
| 'driver': "nl80211", |
| 'conf': { |
| 'ssid': defssid, |
| 'bridge': self.bridgeif, |
| 'hw_mode': 'g' |
| } |
| } |
| |
| # Kill hostapd if already running. |
| self.router.run("pkill hostapd >/dev/null 2>&1", ignore_status=True) |
| |
| # Remove all bridges. |
| output = self.router.run("%s show" % self.cmd_brctl).stdout |
| test = re.compile("^(\S+).*") |
| for line in output.splitlines()[1:]: |
| m = test.match(line) |
| if m: |
| device = m.group(1) |
| self.router.run("%s link set %s down" % (self.cmd_ip, device)) |
| self.router.run("%s delbr %s" % (self.cmd_brctl, device)) |
| |
| # Remove all wifi devices. |
| output = self.router.run("%s dev" % self.cmd_iw).stdout |
| test = re.compile("[\s]*Interface (.*)") |
| for line in output.splitlines(): |
| m = test.match(line) |
| if m: |
| device = m.group(1) |
| self.router.run("%s link set %s down" % (self.cmd_ip, device)) |
| self.router.run("%s dev %s del" % (self.cmd_iw, device)) |
| |
| # Place us in the US by default |
| self.router.run("%s reg set US" % self.cmd_iw) |
| |
| def create(self, params): |
| """ Create a wifi device of the specified type """ |
| # |
| # AP mode is handled entirely by hostapd so we only |
| # have to setup others (mapping the bsd type to what |
| # iw wants) |
| # |
| # map from bsd types to iw types |
| if params['type'] == "ap" or params['type'] == "hostap": |
| self.apmode = True |
| phytype = { |
| "sta" : "managed", |
| "monitor" : "monitor", |
| "adhoc" : "adhoc", |
| "ibss" : "ibss", |
| "ap" : "managed", # NB: handled by hostapd |
| "hostap" : "managed", # NB: handled by hostapd |
| "mesh" : "mesh", |
| "wds" : "wds", |
| }[params['type']] |
| |
| self.router.run("%s phy %s interface add %s type %s" % |
| (self.cmd_iw, self.phydev2, self.wlanif2, phytype)) |
| self.router.run("%s phy %s interface add %s type %s" % |
| (self.cmd_iw, self.phydev5, self.wlanif5, phytype)) |
| |
| |
| def destroy(self, params): |
| """ Destroy a previously created device """ |
| # For linux, this is the same as deconfig. |
| self.deconfig(params) |
| |
| |
| |
| def config(self, params): |
| """ Configure the AP per test requirements """ |
| |
| if self.hostapd['configured']: |
| self.deconfig({}) |
| |
| if self.apmode: |
| # Construct the hostapd.conf file and start hostapd. |
| conf = self.hostapd['conf'] |
| htcaps = set() |
| |
| conf['driver'] = params.get('hostapd_driver', |
| self.hostapd['driver']) |
| |
| for k, v in params.iteritems(): |
| if k == 'ssid': |
| conf['ssid'] = v |
| elif k == 'channel': |
| freq = int(v) |
| |
| # 2.4GHz |
| if freq <= 2484: |
| # Make sure hw_mode is set |
| if conf.get('hw_mode') == 'a': |
| conf['hw_mode'] = 'g' |
| |
| # Freq = 5 * chan + 2407, except channel 14 |
| if freq == 2484: |
| conf['channel'] = 14 |
| else: |
| conf['channel'] = (freq - 2407) / 5 |
| # 5GHz |
| else: |
| # Make sure hw_mode is set |
| conf['hw_mode'] = 'a' |
| # Freq = 5 * chan + 4000 |
| if freq < 5000: |
| conf['channel'] = (freq - 4000) / 5 |
| # Freq = 5 * chan + 5000 |
| else: |
| conf['channel'] = (freq - 5000) / 5 |
| |
| elif k == 'country': |
| conf['country_code'] = v |
| elif k == 'dotd': |
| conf['ieee80211d'] = 1 |
| elif k == '-dotd': |
| conf['ieee80211d'] = 0 |
| elif k == 'mode': |
| if v == '11a': |
| conf['hw_mode'] = 'a' |
| elif v == '11g': |
| conf['hw_mode'] = 'g' |
| elif v == '11b': |
| conf['hw_mode'] = 'b' |
| elif v == '11n': |
| conf['ieee80211n'] = 1 |
| elif k == 'bintval': |
| conf['beacon_int'] = v |
| elif k == 'dtimperiod': |
| conf['dtim_period'] = v |
| elif k == 'rtsthreshold': |
| conf['rts_threshold'] = v |
| elif k == 'fragthreshold': |
| conf['fragm_threshold'] = v |
| elif k == 'shortpreamble': |
| conf['preamble'] = 1 |
| elif k == 'authmode': |
| if v == "open": |
| conf['auth_algs'] = 1 |
| elif v == "shared": |
| conf['auth_algs'] = 2 |
| elif k == 'hidessid': |
| conf['ignore_broadcast_ssid'] = 1 |
| elif k == 'wme': |
| conf['wmm_enabled'] = 1 |
| elif k == '-wme': |
| conf['wmm_enabled'] = 0 |
| elif k == 'deftxkey': |
| conf['wep_default_key'] = v |
| elif k == 'ht20': |
| htcaps.add('') # NB: ensure 802.11n setup below |
| conf['wmm_enabled'] = 1 |
| elif k == 'ht40': |
| htcaps.add('[HT40-]') |
| htcaps.add('[HT40+]') |
| conf['wmm_enabled'] = 1 |
| elif k == 'shortgi': |
| htcaps.add('[SHORT-GI-20]') |
| htcaps.add('[SHORT-GI-40]') |
| elif k == 'pureg': |
| pass # TODO(sleffler) need hostapd support |
| elif k == 'puren': |
| pass # TODO(sleffler) need hostapd support |
| elif k == 'protmode': |
| pass # TODO(sleffler) need hostapd support |
| elif k == 'ht': |
| htcaps.add('') # NB: ensure 802.11n setup below |
| elif k == 'htprotmode': |
| pass # TODO(sleffler) need hostapd support |
| elif k == 'rifs': |
| pass # TODO(sleffler) need hostapd support |
| elif k == 'wepmode': |
| pass # NB: meaningless for hostapd; ignore |
| elif k == '-ampdu': |
| pass # TODO(sleffler) need hostapd support |
| else: |
| conf[k] = v |
| |
| # Aggregate ht_capab. |
| if htcaps: |
| conf['ieee80211n'] = 1 |
| conf['ht_capab'] = ''.join(htcaps) |
| |
| # Figure out the correct interface. |
| if conf.get('hw_mode', 'b') == 'a': |
| conf['interface'] = self.wlanif5 |
| else: |
| conf['interface'] = self.wlanif2 |
| |
| # Generate hostapd.conf. |
| self.router.run("cat <<EOF >%s\n%s\nEOF\n" % |
| (self.hostapd['file'], '\n'.join( |
| "%s=%s" % kv for kv in conf.iteritems()))) |
| |
| # Run hostapd. |
| logging.info("Starting hostapd...") |
| self.router.run("%s -B %s" % |
| (self.cmd_hostapd, self.hostapd['file'])) |
| |
| |
| # Set up the bridge. |
| logging.info("Setting up the bridge...") |
| self.router.run("%s setfd %s %d" % |
| (self.cmd_brctl, self.bridgeif, 0)) |
| self.router.run("%s addif %s %s" % |
| (self.cmd_brctl, self.bridgeif, self.wiredif)) |
| self.router.run("%s link set %s up" % |
| (self.cmd_ip, self.wiredif)) |
| self.router.run("%s link set %s up" % |
| (self.cmd_ip, self.bridgeif)) |
| |
| logging.info("AP configured.") |
| |
| # else: |
| # # use iw to manually configure interface |
| |
| self.hostapd['configured'] = True |
| |
| |
| def deconfig(self, params): |
| """ De-configure the AP (will also bring wlan and the bridge down) """ |
| |
| if not self.hostapd['configured']: |
| return |
| |
| # Taking down hostapd takes wlan0 and mon.wlan0 down. |
| self.router.run("pkill hostapd >/dev/null 2>&1", ignore_status=True) |
| # self.router.run("rm -f %s" % self.hostapd['file']) |
| |
| # Tear down the bridge. |
| self.router.run("%s link set %s down" % (self.cmd_ip, self.bridgeif), |
| ignore_status=True) |
| self.router.run("%s delbr %s" % (self.cmd_brctl, self.bridgeif), |
| ignore_status=True) |
| |
| self.hostapd['configured'] = False |
