mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-12-28 20:32:32 +01:00
55a077d399
If the network does not support group traffic we can now skip the broadcast test by specifying group=False in test_ifaces_connected.
145 lines
4.2 KiB
Python
145 lines
4.2 KiB
Python
#! /usr/bin/python3
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# Rougly based on wpa_supplicant's mac80211_hwsim/tools/hwsim_test.c utility.
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import socket
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import fcntl
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import struct
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import select
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import wiphy
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import iwd
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HWSIM_ETHERTYPE = 0x0800
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HWSIM_PACKETLEN = 250
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def raw_if_socket(intf):
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sock = socket.socket(socket.PF_PACKET, socket.SOCK_RAW,
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socket.htons(HWSIM_ETHERTYPE))
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sock.bind((intf, HWSIM_ETHERTYPE))
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return (sock, sock.getsockname()[4])
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def checksum(buf):
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pairs = zip(buf[0::2], buf[1::2])
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s = sum([(h << 8) + l for h, l in pairs])
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while s >> 16:
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s = (s & 0xffff) + (s >> 16)
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return s ^ 0xffff
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def tx(fromsock, tosock, src, dst):
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frame = b''.join([
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dst, # eth.rmac
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src, # eth.lmac
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struct.pack('!H', HWSIM_ETHERTYPE), # eth.type
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b'\x45', # ip.hdr_len
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b'\x00', # ip.dsfield
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struct.pack('!H', HWSIM_PACKETLEN - 14), # ip.len
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b'\x01\x23', # ip.id
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b'\x40\x00', # ip.flags, ip.frag_offset
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b'\x40', # ip.ttl
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b'\x01', # ip.proto
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struct.pack('>H', 0), # ip.checksum
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socket.inet_aton('192.168.1.1'), # ip.src
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socket.inet_aton('192.168.1.2'), # ip.dst
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bytes(range(0, HWSIM_PACKETLEN - 14 - 20))
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])
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frame = frame[:24] + struct.pack('>H', checksum(frame[14:34])) + frame[26:]
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fromsock.send(frame)
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return (frame, fromsock, tosock, src, dst)
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def test_connected(if0=None, if1=None, group=True):
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if if0 is None or if1 is None:
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iwd_list = [dev.name for dev in iwd.IWD.get_instance().list_devices()]
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non_iwd_list = [ifname for w in wiphy.wiphy_map.values()
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for ifname in w.interface_map]
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for intf in iwd_list + non_iwd_list:
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if if0 is None:
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if0 = intf
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elif if1 is None and intf != if0:
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if1 = intf
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sock0, addr0 = raw_if_socket(if0)
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sock1, addr1 = raw_if_socket(if1)
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bcast = b'\xff\xff\xff\xff\xff\xff'
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try:
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frames = [
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tx(sock0, sock1, addr0, addr1),
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tx(sock1, sock0, addr1, addr0),
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]
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rec = [False, False]
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if group:
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frames.append(tx(sock0, sock1, addr0, bcast))
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frames.append(tx(sock1, sock0, addr1, bcast))
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rec.append(False)
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rec.append(False)
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while not all(rec):
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r, w, x = select.select([sock0, sock1], [], [], 1.0)
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if not r:
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raise Exception('timeout waiting for packets: ' + repr(rec))
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for s in r:
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data, src = s.recvfrom(HWSIM_PACKETLEN + 1)
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print('received ' + repr(data[:40]) + '... from ' + str(src))
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if len(data) != HWSIM_PACKETLEN:
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continue
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idx = 0
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for origdata, fromsock, tosock, origsrc, origdst in frames:
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if s is tosock and src[4] == origsrc and data == origdata:
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print('matches frame ' + str(idx))
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break
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idx += 1
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else:
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print('doesn\'t match any of our frames')
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continue
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if rec[idx]:
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raise Exception('duplicate frame ' + str(idx))
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rec[idx] = True
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finally:
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sock0.close()
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sock1.close()
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def test_ifaces_connected(if0=None, if1=None, group=True):
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retry = 0
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while True:
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try:
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test_connected(if0, if1, group)
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break
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except Exception as e:
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if retry < 3:
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print('retrying connection test: %i' % retry)
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retry += 1
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continue
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raise e
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SIOCGIFFLAGS = 0x8913
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IFF_UP = 1 << 0
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IFF_RUNNING = 1 << 6
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def test_iface_operstate(intf=None):
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if not intf:
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intf = iwd.IWD.get_instance().list_devices()[0].name
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sock = socket.socket(socket.PF_PACKET, socket.SOCK_RAW)
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try:
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ifreq = struct.pack('16sh', intf.encode('utf8'), 0)
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flags = struct.unpack('16sh', fcntl.ioctl(sock, SIOCGIFFLAGS, ifreq))[1]
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# IFF_LOWER_UP and IFF_DORMANT not returned by SIOCGIFFLAGS
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if flags & (IFF_UP | IFF_RUNNING) != IFF_UP | IFF_RUNNING:
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raise Exception(intf + ' operstate wrong')
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finally:
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sock.close()
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