198 lines
6.4 KiB
Python
198 lines
6.4 KiB
Python
# sfputil.py
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#
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# Platform-specific SFP transceiver interface for SONiC
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#
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try:
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import time
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import subprocess
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from sonic_sfp.sfputilbase import SfpUtilBase
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except ImportError as e:
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raise ImportError("%s - required module not found" % str(e))
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# parameters for DB connection
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REDIS_HOSTNAME = "localhost"
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REDIS_PORT = 6379
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REDIS_TIMEOUT_USECS = 0
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class SfpUtil(SfpUtilBase):
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"""Platform-specific SfpUtil class"""
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PORT_START = 0
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PORT_END = 31
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PORTS_IN_BLOCK = 32
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EEPROM_OFFSET = 1
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_port_to_eeprom_mapping = {}
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db_sel = None
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db_sel_timeout = None
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db_sel_object = None
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db_sel_tbl = None
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state_db = None
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sfpd_status_tbl = None
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@property
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def port_start(self):
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return self.PORT_START
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@property
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def port_end(self):
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return self.PORT_END
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@property
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def qsfp_ports(self):
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return range(0, self.PORTS_IN_BLOCK + 1)
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@property
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def port_to_eeprom_mapping(self):
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return self._port_to_eeprom_mapping
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def __init__(self):
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eeprom_path = "/sys/class/i2c-adapter/i2c-2/2-0048/hwmon/hwmon6/qsfp{0}_eeprom"
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for x in range(0, self.port_end + 1):
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self._port_to_eeprom_mapping[x] = eeprom_path.format(x + self.EEPROM_OFFSET)
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SfpUtilBase.__init__(self)
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def get_presence(self, port_num):
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# Check for invalid port_num
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if port_num < self.port_start or port_num > self.port_end:
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return False
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try:
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reg_file = open("/bsp/qsfp/qsfp%d_status" % (port_num+1))
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except IOError as e:
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print "Error: unable to open file: %s" % str(e)
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return False
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content = reg_file.readline().rstrip()
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# content is a string with the qsfp status
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if content == "good":
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return True
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return False
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def get_low_power_mode(self, port_num):
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# Check for invalid port_num
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if port_num < self.port_start or port_num > self.port_end:
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return False
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lpm_cmd = "docker exec syncd python /usr/share/sonic/platform/plugins/sfplpmget.py {}".format(port_num)
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try:
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output = subprocess.check_output(lpm_cmd, shell=True)
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if 'LPM ON' in output:
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return True
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except subprocess.CalledProcessError as e:
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print "Error! Unable to get LPM for {}, rc = {}, err msg: {}".format(port_num, e.returncode, e.output)
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return False
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return False
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def set_low_power_mode(self, port_num, lpmode):
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# Check for invalid port_num
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if port_num < self.port_start or port_num > self.port_end:
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return False
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curr_lpmode = self.get_low_power_mode(port_num)
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if curr_lpmode == lpmode:
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return True
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lpm = 'on' if lpmode else 'off'
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lpm_cmd = "docker exec syncd python /usr/share/sonic/platform/plugins/sfplpmset.py {} {}".format(port_num, lpm)
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sfp_port_names = self.physical_to_logical[port_num]
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# Get port admin status
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try:
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enabled_ports = subprocess.check_output("ip link show up", shell=True)
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except subprocess.CalledProcessError as e:
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print "Error! Unable to get ports status, err msg: {}".format(e.output)
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return False
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port_to_disable = []
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for port in sfp_port_names:
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if port in enabled_ports:
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port_to_disable.append(port)
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# Disable ports before LPM settings
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for port in port_to_disable:
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try:
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subprocess.check_output("ifconfig {} down".format(port), shell=True)
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except subprocess.CalledProcessError as e:
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print "Error! Unable to set admin status to DOWN for {}, rc = {}, err msg: {}".format(port, e.returncode, e.output)
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return False
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time.sleep(3)
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# Set LPM
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try:
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subprocess.check_output(lpm_cmd, shell=True)
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except subprocess.CalledProcessError as e:
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print "Error! Unable to set LPM for {}, rc = {}, err msg: {}".format(port_num, e.returncode, e.output)
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return False
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# Enable ports after LPM settings
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for port in port_to_disable:
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try:
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subprocess.check_output("ifconfig {} up".format(port), shell=True)
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except subprocess.CalledProcessError as e:
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print "Error! Unable to set admin status to UP for {}, rc = {}, err msg: {}".format(port, e.returncode, e.output)
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return False
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return True
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def reset(self, port_num):
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# Check for invalid port_num
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if port_num < self.port_start or port_num > self.port_end:
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return False
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lpm_cmd = "docker exec syncd python /usr/share/sonic/platform/plugins/sfpreset.py {}".format(port_num)
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try:
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subprocess.check_output(lpm_cmd, shell=True)
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return True
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except subprocess.CalledProcessError as e:
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print "Error! Unable to set LPM for {}, rc = {}, err msg: {}".format(port_num, e.returncode, e.output)
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return False
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return False
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def get_transceiver_change_event(self, timeout=0):
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phy_port_dict = {}
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status = True
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if self.db_sel == None:
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from swsscommon import swsscommon
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self.state_db = swsscommon.DBConnector(swsscommon.STATE_DB,
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REDIS_HOSTNAME,
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REDIS_PORT,
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REDIS_TIMEOUT_USECS)
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# Subscribe to state table for SFP change notifications
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self.db_sel = swsscommon.Select()
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self.db_sel_tbl = swsscommon.NotificationConsumer(self.state_db, 'TRANSCEIVER_NOTIFY')
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self.db_sel.addSelectable(self.db_sel_tbl)
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self.db_sel_timeout = swsscommon.Select.TIMEOUT
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self.db_sel_object = swsscommon.Select.OBJECT
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self.sfpd_status_tbl = swsscommon.Table(self.state_db, 'MLNX_SFPD_TASK')
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# Check the liveness of mlnx-sfpd, if it failed, return false
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keys = self.sfpd_status_tbl.getKeys()
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if 'LIVENESS' not in keys:
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return False, phy_port_dict
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(state, c) = self.db_sel.select(timeout)
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if state == self.db_sel_timeout:
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status = True
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elif state != self.db_sel_object:
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status = False
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else:
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(key, op, fvp) = self.db_sel_tbl.pop()
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phy_port_dict[key] = op
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return status, phy_port_dict
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