sonic-buildimage/device/mellanox/x86_64-mlnx_msn2100-r0/plugins/sfputil.py
Nazarii Hnydyn 33d4140f27 [devices]: Fixed trancevier presence getter on Mellanox. (#2144)
Signed-off-by: Nazarii Hnydyn <nazariig@mellanox.com>
2018-10-12 16:00:30 -07:00

201 lines
6.5 KiB
Python

# sfputil.py
#
# Platform-specific SFP transceiver interface for SONiC
#
try:
import time
import subprocess
from sonic_sfp.sfputilbase import SfpUtilBase
except ImportError as e:
raise ImportError("%s - required module not found" % str(e))
# parameters for DB connection
REDIS_HOSTNAME = "localhost"
REDIS_PORT = 6379
REDIS_TIMEOUT_USECS = 0
# parameters for SFP presence
SFP_STATUS_INSERTED = '1'
class SfpUtil(SfpUtilBase):
"""Platform-specific SfpUtil class"""
PORT_START = 0
PORT_END = 15
PORTS_IN_BLOCK = 16
EEPROM_OFFSET = 1
_port_to_eeprom_mapping = {}
db_sel = None
db_sel_timeout = None
db_sel_object = None
db_sel_tbl = None
state_db = None
sfpd_status_tbl = None
@property
def port_start(self):
return self.PORT_START
@property
def port_end(self):
return self.PORT_END
@property
def qsfp_ports(self):
return range(0, self.PORTS_IN_BLOCK + 1)
@property
def port_to_eeprom_mapping(self):
return self._port_to_eeprom_mapping
def __init__(self):
eeprom_path = "/sys/devices/platform/i2c_mlxcpld.1/i2c-1/i2c-2/2-0048/qsfp{0}"
for x in range(0, self.port_end + 1):
self._port_to_eeprom_mapping[x] = eeprom_path.format(x + self.EEPROM_OFFSET)
SfpUtilBase.__init__(self)
def get_presence(self, port_num):
# Check for invalid port_num
if port_num < self.port_start or port_num > self.port_end:
return False
try:
reg_file = open("/bsp/qsfp/qsfp%d_status" % (port_num+1))
except IOError as e:
print "Error: unable to open file: %s" % str(e)
return False
content = reg_file.readline().rstrip()
# content is a string with the qsfp status
if content == SFP_STATUS_INSERTED:
return True
return False
def get_low_power_mode(self, port_num):
# Check for invalid port_num
if port_num < self.port_start or port_num > self.port_end:
return False
lpm_cmd = "docker exec syncd python /usr/share/sonic/platform/plugins/sfplpmget.py {}".format(port_num)
try:
output = subprocess.check_output(lpm_cmd, shell=True)
if 'LPM ON' in output:
return True
except subprocess.CalledProcessError as e:
print "Error! Unable to get LPM for {}, rc = {}, err msg: {}".format(port_num, e.returncode, e.output)
return False
return False
def set_low_power_mode(self, port_num, lpmode):
# Check for invalid port_num
if port_num < self.port_start or port_num > self.port_end:
return False
curr_lpmode = self.get_low_power_mode(port_num)
if curr_lpmode == lpmode:
return True
lpm = 'on' if lpmode else 'off'
lpm_cmd = "docker exec syncd python /usr/share/sonic/platform/plugins/sfplpmset.py {} {}".format(port_num, lpm)
sfp_port_names = self.physical_to_logical[port_num]
# Get port admin status
try:
enabled_ports = subprocess.check_output("ip link show up", shell=True)
except subprocess.CalledProcessError as e:
print "Error! Unable to get ports status, err msg: {}".format(e.output)
return False
port_to_disable = []
for port in sfp_port_names:
if port in enabled_ports:
port_to_disable.append(port)
# Disable ports before LPM settings
for port in port_to_disable:
try:
subprocess.check_output("ifconfig {} down".format(port), shell=True)
except subprocess.CalledProcessError as e:
print "Error! Unable to set admin status to DOWN for {}, rc = {}, err msg: {}".format(port, e.returncode, e.output)
return False
time.sleep(3)
# Set LPM
try:
subprocess.check_output(lpm_cmd, shell=True)
except subprocess.CalledProcessError as e:
print "Error! Unable to set LPM for {}, rc = {}, err msg: {}".format(port_num, e.returncode, e.output)
return False
# Enable ports after LPM settings
for port in port_to_disable:
try:
subprocess.check_output("ifconfig {} up".format(port), shell=True)
except subprocess.CalledProcessError as e:
print "Error! Unable to set admin status to UP for {}, rc = {}, err msg: {}".format(port, e.returncode, e.output)
return False
return True
def reset(self, port_num):
# Check for invalid port_num
if port_num < self.port_start or port_num > self.port_end:
return False
lpm_cmd = "docker exec syncd python /usr/share/sonic/platform/plugins/sfpreset.py {}".format(port_num)
try:
subprocess.check_output(lpm_cmd, shell=True)
return True
except subprocess.CalledProcessError as e:
print "Error! Unable to set LPM for {}, rc = {}, err msg: {}".format(port_num, e.returncode, e.output)
return False
return False
def get_transceiver_change_event(self, timeout=0):
phy_port_dict = {}
status = True
if self.db_sel == None:
from swsscommon import swsscommon
self.state_db = swsscommon.DBConnector(swsscommon.STATE_DB,
REDIS_HOSTNAME,
REDIS_PORT,
REDIS_TIMEOUT_USECS)
# Subscribe to state table for SFP change notifications
self.db_sel = swsscommon.Select()
self.db_sel_tbl = swsscommon.NotificationConsumer(self.state_db, 'TRANSCEIVER_NOTIFY')
self.db_sel.addSelectable(self.db_sel_tbl)
self.db_sel_timeout = swsscommon.Select.TIMEOUT
self.db_sel_object = swsscommon.Select.OBJECT
self.sfpd_status_tbl = swsscommon.Table(self.state_db, 'MLNX_SFPD_TASK')
# Check the liveness of mlnx-sfpd, if it failed, return false
keys = self.sfpd_status_tbl.getKeys()
if 'LIVENESS' not in keys:
return False, phy_port_dict
(state, c) = self.db_sel.select(timeout)
if state == self.db_sel_timeout:
status = True
elif state != self.db_sel_object:
status = False
else:
(key, op, fvp) = self.db_sel_tbl.pop()
phy_port_dict[key] = op
return status, phy_port_dict