def driver_name(device_name):
"""Returns the driver used by a device.
Throws IOError ENODEV for non existing devices.
Throws IOError EOPNOTSUPP for non supported devices, i.g., loopback.
"""
encoded_name = py2to3.to_binary(device_name)
buff = array.array('b', b'\0' * struct.calcsize(DRVINFO_FORMAT))
cmds = struct.pack('= I', ETHTOOL_GDRVINFO)
buff[0:len(cmds)] = array.array('b', cmds)
data = struct.pack(IFREQ_FORMAT, encoded_name, *buff.buffer_info())
with closing(socket.socket(socket.AF_INET, socket.SOCK_DGRAM)) as sock:
fcntl.ioctl(sock, SIOCETHTOOL, data)
(
cmds,
driver,
version,
fw_version,
businfo,
_,
_,
n_priv_flags,
n_stats,
testinfo_len,
eedump_len,
regdump_len,
) = struct.unpack(DRVINFO_FORMAT, buff)
driver_str = py2to3.to_str(driver)
return driver_str.rstrip('\0') # C string end with the leftmost null char
def rtnl_link_get_kernel(socket, ifindex, ifname):
"""Get a link object directly from kernel.
@arg socket Netlink socket
@arg ifindex Interface index, use 0 if not to be used
@arg ifname Name of link, use None if not to be used
Older kernels do not support lookup by name. In that case, libnl
will fail with NLE_OPNOTSUPP. In case no matching link was found,
fails with NLE_OBJ_NOTFOUND.
@return Link object.
"""
_rtnl_link_get_kernel = _libnl_route('rtnl_link_get_kernel', c_int,
c_void_p, c_int, c_char_p, c_void_p)
link = c_void_p()
b_ifname = py2to3.to_binary(ifname) if ifname else None
err = _rtnl_link_get_kernel(socket, ifindex, b_ifname, byref(link))
if err:
raise IOError(-err, nl_geterror(err))
return link
def rtnl_link_get_kernel(socket, ifindex, ifname):
"""Get a link object directly from kernel.
@arg socket Netlink socket
@arg ifindex Interface index, use 0 if not to be used
@arg ifname Name of link, use None if not to be used
Older kernels do not support lookup by name. In that case, libnl
will fail with NLE_OPNOTSUPP. In case no matching link was found,
fails with NLE_OBJ_NOTFOUND.
@return Link object.
"""
_rtnl_link_get_kernel = _libnl_route(
'rtnl_link_get_kernel', c_int, c_void_p, c_int, c_char_p, c_void_p)
link = c_void_p()
b_ifname = py2to3.to_binary(ifname) if ifname else None
err = _rtnl_link_get_kernel(socket, ifindex, b_ifname, byref(link))
if err:
raise IOError(-err, nl_geterror(err))
return link
def driver_name(device_name):
"""Returns the driver used by a device.
Throws IOError ENODEV for non existing devices.
Throws IOError EOPNOTSUPP for non supported devices, i.g., loopback.
"""
encoded_name = py2to3.to_binary(device_name)
buff = array.array('b', b'\0' * struct.calcsize(DRVINFO_FORMAT))
cmds = struct.pack('= I', ETHTOOL_GDRVINFO)
buff[0:len(cmds)] = array.array('b', cmds)
data = struct.pack(IFREQ_FORMAT, encoded_name, *buff.buffer_info())
with closing(socket.socket(socket.AF_INET, socket.SOCK_DGRAM)) as sock:
fcntl.ioctl(sock, SIOCETHTOOL, data)
(cmds, driver, version, fw_version, businfo, _, _, n_priv_flags, n_stats,
testinfo_len, eedump_len, regdump_len) = struct.unpack(DRVINFO_FORMAT,
buff)
driver_str = py2to3.to_str(driver)
return driver_str.rstrip('\0') # C string end with the leftmost null char