226 lines
6.2 KiB
Python
226 lines
6.2 KiB
Python
# Copyright (C) 2008, 2009 Red Hat, Inc.
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# Authors: Jan Vcelak <jvcelak@redhat.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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from subprocess import *
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import re
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import logging, tuned_logging
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log = logging.getLogger("tuned")
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class Nettool:
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_advertise_values = { # [ half, full ]
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10 : [ 0x001, 0x002 ],
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100 : [ 0x004, 0x008 ],
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1000 : [ 0x010, 0x020 ],
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2500 : [ 0, 0x8000 ],
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10000 : [ 0, 0x1000 ],
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"auto" : 0x03F
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}
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_disabled = False
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def __init__(self, interface):
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self._interface = interface;
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self.update()
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log.debug("%s: speed %s, full duplex %s, autoneg %s, link %s" % (interface, self.speed, self.full_duplex, self.autoneg, self.link))
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log.debug("%s: supports: autoneg %s, modes %s" % (interface, self.supported_autoneg, self.supported_modes))
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log.debug("%s: advertises: autoneg %s, modes %s" % (interface, self.advertised_autoneg, self.advertised_modes))
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# def __del__(self):
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# if self.supported_autoneg:
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# self._set_advertise(self._advertise_values["auto"])
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def _clean_status(self):
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self.speed = 0
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self.full_duplex = False
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self.autoneg = False
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self.link = False
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self.supported_modes = []
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self.supported_autoneg = False
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self.advertised_modes = []
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self.advertised_autoneg = False
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def _calculate_mode(self, modes):
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mode = 0;
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for m in modes:
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mode += self._advertise_values[m[0]][ 1 if m[1] else 0 ]
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return mode
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def _set_autonegotiation(self, enable):
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if self.autoneg == enable:
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return True
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if not self.supported_autoneg:
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return False
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return 0 == call(["ethtool", "-s", self._interface, "autoneg", "on" if enable else "off"])
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def _set_advertise(self, value):
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if not self._set_autonegotiation(True):
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return False
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return 0 == call(["ethtool", "-s", self._interface, "advertise", "0x%03x" % value])
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def get_max_speed(self):
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max = 0
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for mode in self.supported_modes:
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if mode[0] > max: max = mode[0]
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if max > 0:
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return max
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else:
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return 1000
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def set_max_speed(self):
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if self._disabled or not self.supported_autoneg:
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return False
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#if self._set_advertise(self._calculateMode(self.supported_modes)):
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if self._set_advertise(self._advertise_values["auto"]):
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self.update()
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return True
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else:
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return False
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def set_speed(self, speed):
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if self._disabled or not self.supported_autoneg:
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return False
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mode = 0
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for am in self._advertise_values:
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if am == "auto": continue
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if am <= speed:
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mode += self._advertise_values[am][0];
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mode += self._advertise_values[am][1];
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effective_mode = mode & self._calculate_mode(self.supported_modes)
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log.debug("%s: set_speed(%d) - effective_mode 0x%03x" % (self._interface, speed, effective_mode))
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if self._set_advertise(effective_mode):
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self.update()
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return True
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else:
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return False
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def update(self):
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if self._disabled:
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return
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# run ethtool and preprocess output
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p_ethtool = Popen(["ethtool", self._interface], stdout=PIPE, stderr=PIPE)
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p_filter = Popen(["sed", "s/^\s*//;s/:\s*/:\\n/g"], stdin=p_ethtool.stdout, stdout=PIPE)
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output = p_filter.communicate()[0]
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errors = p_ethtool.communicate()[1]
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if errors != "":
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log.warning("%s: some errors were reported by 'ethtool'" % self._interface)
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log.debug("%s: %s" % (self._interface, errors.replace("\n", r"\n")))
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self._clean_status()
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self._disabled = True
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return
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# parses output - kind of FSM
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self._clean_status()
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re_speed = re.compile(r"(\d+)")
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re_mode = re.compile(r"(\d+)baseT/(Half|Full)")
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state = "wait"
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for line in output.split("\n"):
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if line.endswith(":"):
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section = line[:-1]
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if section == "Speed": state = "speed"
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elif section == "Duplex": state = "duplex"
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elif section == "Auto-negotiation": state = "autoneg"
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elif section == "Link detected": state = "link"
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elif section == "Supported link modes": state = "supported_modes"
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elif section == "Supports auto-negotiation": state = "supported_autoneg"
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elif section == "Advertised link modes": state = "advertised_modes"
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elif section == "Advertised auto-negotiation": state = "advertised_autoneg"
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else: state = "wait"
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del section
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elif state == "speed":
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# Try to determine speed. If it fails, assume 1gbit ethernet
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try:
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self.speed = re_speed.match(line).group(1)
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except:
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self.speed = 1000
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state = "wait"
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elif state == "duplex":
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self.full_duplex = line == "Full"
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state = "wait"
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elif state == "autoneg":
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self.autoneg = (line == "yes" or line == "on")
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state = "wait"
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elif state == "link":
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self.link = line == "yes"
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state = "wait"
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elif state == "supported_modes":
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# Try to determine supported modes. If it fails, assume 1gibt ethernet fullduplex works
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try:
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for m in line.split():
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(s, d) = re_mode.match(m).group(1,2)
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self.supported_modes.append( (int(s), d == "Full") )
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del m,s,d
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except:
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self.supported_modes.append((1000, True))
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elif state == "supported_autoneg":
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self.supported_autoneg = line == "Yes"
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state = "wait"
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elif state == "advertised_modes":
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# Try to determine advertised modes. If it fails, assume 1gibt ethernet fullduplex works
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try:
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if line != "Not reported":
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for m in line.split():
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(s, d) = re_mode.match(m).group(1,2)
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self.advertised_modes.append( (int(s), d == "Full") )
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del m,s,d
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except:
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self.advertised_modes.append((1000, True))
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elif state == "advertised_autoneg":
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self.advertised_autoneg = line == "Yes"
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state = "wait"
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def ethcard(interface):
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if not interface in ethcard.list:
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ethcard.list[interface] = Nettool(interface)
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return ethcard.list[interface]
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ethcard.list = {}
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