* [device/mellanox/x86_64-mlnx_msn2700-r0/plugins/sfputil.py] purpose and restrictions 1. reading eeprom via ethtool. 2. avoid changing common codes shared by all the manufacture (sonic-platform-common), contrain all the modifications with Mellanox-specific code. current implementation A new class based on SfpUtilBase and a new method _read_eeprom_specific_bytes_via_ethtool have been introduced in order to change the way the eprom DOM data is read. Typically the best practice to do this kind of thing is to contrain the modification within the function which execute reading operations only and keep other stuffs (especially the interface) untouched. However, this can hardly be achieved since the original reading function takes the file object as input parameter to represent the port. It is done by having the file object to point to /var/run/hwmanagement files, which will not be maintained in the future. As a result, a new interface has to be introduced with a port number/name as input parameter in order to get rid of the dependency on the those files: _read_eeprom_specific_bytes_via_ethtool Since the interface changed, all methods that call the interface should also be overwritten in order to call the new interface, including: _read_eeprom_devid get_transceiver_info_dict get_transceiver_dom_info_dict Only interface used to read eeprom DOM has been replaced and the main logic has not been changed except the following mentioned. 1. reading DOM data for sfp port, which is implementioned in get_transceiver_dom_info_dict. In this case a "calibration" should be firstly read from eeprom before other values like temperature, voltage, rx/tx power, can be parsed. However, this has been ignored in the original code, resulting in that the data cann't be parsed. 2. In the original implemention the data area containing the data are read from DOM separatedly in order to avoid read uncessary data and achieve a better performance. Having used ethtool to read DOM data, the performance gap between reading all the area and reading the spot data separatedly has been narrowed to almost zero. To make the code neat and readable, we change the way to read this data. * [sfputil] Returns dict with all data set to N/A for ports without dom support Currently, the way in which dom data is read has been changed from using sysfs to using ethtool. The ethtool returns None for ports without dom support, resulting in None being returned. However, this fails xcvrd to add the TRANSCEIVER_DOM_SENSOR table entry of associated port to CONFIG_DB and then causes SNMP fail. To address this issue a default dict is initialized with all data set to 'N/A' and is returned is the above case. BTW, in the original implementation which sysfs is used to read dom data, even though non-None data is returned for ports without dom support, it does not contain valid data. This can result in wrong data in TRANSCEIVER_DOM_SENSOR table. * [sfputil] removing unnecessary empty lines removing redundent code replacing hardcoding strings/numbers with predefined const variables
This commit is contained in:
Stephen
lguohan
parent
2a5bfe2bd7
commit
cfa14ce1a6
@ -6,7 +6,7 @@
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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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from sonic_sfp.sfputilbase import *
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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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@ -20,6 +20,10 @@ SFP_STATUS_INSERTED = '1'
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GET_HWSKU_CMD = "sonic-cfggen -d -v DEVICE_METADATA.localhost.hwsku"
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# Ethernet<n> <=> sfp<n+SFP_PORT_NAME_OFFSET>
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SFP_PORT_NAME_OFFSET = 1
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SFP_PORT_NAME_CONVENTION = "sfp{}"
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# magic code defnition for port number, qsfp port position of each hwsku
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# port_position_tuple = (PORT_START, QSFP_PORT_START, PORT_END, PORT_IN_BLOCK, EEPROM_OFFSET)
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hwsku_dict = {'ACS-MSN2700': 0, "LS-SN2700":0, 'ACS-MSN2740': 0, 'ACS-MSN2100': 1, 'ACS-MSN2410': 2, 'ACS-MSN2010': 3, 'ACS-MSN3700': 0, 'ACS-MSN3700C': 0, 'Mellanox-SN2700': 0, 'Mellanox-SN2700-D48C8': 0}
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@ -191,3 +195,354 @@ class SfpUtil(SfpUtilBase):
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return status, phy_port_dict
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def _read_eeprom_specific_bytes(self, sysfsfile_eeprom, offset, num_bytes):
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print("_read_eeprom_specific_bytes should not be called since the sysfs it dependents on will no longer exist.")
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print("_read_eeprom_specific_bytes_via_ethtool should be called instead")
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raise Exception()
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# Read out any bytes from any offset
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def _read_eeprom_specific_bytes_via_ethtool(self, port_num, offset, num_bytes):
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port_num += SFP_PORT_NAME_OFFSET
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sfpname = SFP_PORT_NAME_CONVENTION.format(port_num)
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eeprom_raw = []
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ethtool_cmd = "ethtool -m {} hex on offset {} length {}".format(sfpname, offset, num_bytes)
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try:
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output = subprocess.check_output(ethtool_cmd, shell=True)
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output_lines = output.splitlines()
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first_line_raw = output_lines[0]
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if "Offset" in first_line_raw:
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for line in output_lines[2:]:
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line_split = line.split()
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eeprom_raw = eeprom_raw + line_split[1:]
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except subprocess.CalledProcessError as e:
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return None
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return eeprom_raw
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# Read eeprom
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def _read_eeprom_devid(self, port_num, devid, offset, num_bytes = 512):
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if port_num in self.osfp_ports:
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pass
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elif port_num in self.qsfp_ports:
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pass
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elif (self.DOM_EEPROM_ADDR == devid):
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offset += 256
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eeprom_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, offset, num_bytes)
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return eeprom_raw
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# Read out SFP type, vendor name, PN, REV, SN from eeprom.
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def get_transceiver_info_dict(self, port_num):
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transceiver_info_dict = {}
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compliance_code_dict = {}
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# ToDo: OSFP tranceiver info parsing not fully supported.
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# in inf8628.py lack of some memory map definition
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# will be implemented when the inf8628 memory map ready
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if port_num in self.osfp_ports:
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offset = 0
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vendor_rev_width = XCVR_HW_REV_WIDTH_OSFP
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sfpi_obj = inf8628InterfaceId()
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if sfpi_obj is None:
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print("Error: sfp_object open failed")
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return None
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sfp_type_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + OSFP_TYPE_OFFSET), XCVR_TYPE_WIDTH)
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if sfp_type_raw is not None:
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sfp_type_data = sfpi_obj.parse_sfp_type(sfp_type_raw, 0)
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else:
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return None
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sfp_vendor_name_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + OSFP_VENDOR_NAME_OFFSET), XCVR_VENDOR_NAME_WIDTH)
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if sfp_vendor_name_raw is not None:
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sfp_vendor_name_data = sfpi_obj.parse_vendor_name(sfp_vendor_name_raw, 0)
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else:
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return None
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sfp_vendor_pn_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + OSFP_VENDOR_PN_OFFSET), XCVR_VENDOR_PN_WIDTH)
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if sfp_vendor_pn_raw is not None:
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sfp_vendor_pn_data = sfpi_obj.parse_vendor_pn(sfp_vendor_pn_raw, 0)
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else:
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return None
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sfp_vendor_rev_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + OSFP_HW_REV_OFFSET), vendor_rev_width)
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if sfp_vendor_rev_raw is not None:
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sfp_vendor_rev_data = sfpi_obj.parse_vendor_rev(sfp_vendor_rev_raw, 0)
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else:
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return None
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sfp_vendor_sn_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + OSFP_VENDOR_SN_OFFSET), XCVR_VENDOR_SN_WIDTH)
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if sfp_vendor_sn_raw is not None:
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sfp_vendor_sn_data = sfpi_obj.parse_vendor_sn(sfp_vendor_sn_raw, 0)
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else:
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return None
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transceiver_info_dict['type'] = sfp_type_data['data']['type']['value']
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transceiver_info_dict['manufacturename'] = sfp_vendor_name_data['data']['Vendor Name']['value']
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transceiver_info_dict['modelname'] = sfp_vendor_pn_data['data']['Vendor PN']['value']
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transceiver_info_dict['hardwarerev'] = sfp_vendor_rev_data['data']['Vendor Rev']['value']
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transceiver_info_dict['serialnum'] = sfp_vendor_sn_data['data']['Vendor SN']['value']
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# Below part is added to avoid fail the xcvrd, shall be implemented later
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transceiver_info_dict['vendor_oui'] = 'N/A'
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transceiver_info_dict['vendor_date'] = 'N/A'
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transceiver_info_dict['Connector'] = 'N/A'
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transceiver_info_dict['encoding'] = 'N/A'
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transceiver_info_dict['ext_identifier'] = 'N/A'
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transceiver_info_dict['ext_rateselect_compliance'] = 'N/A'
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transceiver_info_dict['cable_type'] = 'N/A'
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transceiver_info_dict['cable_length'] = 'N/A'
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transceiver_info_dict['specification_compliance'] = 'N/A'
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transceiver_info_dict['nominal_bit_rate'] = 'N/A'
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else:
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if port_num in self.qsfp_ports:
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offset = 128
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vendor_rev_width = XCVR_HW_REV_WIDTH_QSFP
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cable_length_width = XCVR_CABLE_LENGTH_WIDTH_QSFP
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interface_info_bulk_width = XCVR_INTFACE_BULK_WIDTH_QSFP
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sfp_type = 'QSFP'
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sfpi_obj = sff8436InterfaceId()
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if sfpi_obj is None:
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print("Error: sfp_object open failed")
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return None
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else:
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offset = 0
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vendor_rev_width = XCVR_HW_REV_WIDTH_SFP
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cable_length_width = XCVR_CABLE_LENGTH_WIDTH_SFP
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interface_info_bulk_width = XCVR_INTFACE_BULK_WIDTH_SFP
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sfp_type = 'SFP'
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sfpi_obj = sff8472InterfaceId()
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if sfpi_obj is None:
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print("Error: sfp_object open failed")
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return None
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sfp_interface_bulk_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + XCVR_INTFACE_BULK_OFFSET), interface_info_bulk_width)
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if sfp_interface_bulk_raw is not None:
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sfp_interface_bulk_data = sfpi_obj.parse_sfp_info_bulk(sfp_interface_bulk_raw, 0)
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else:
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return None
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sfp_vendor_name_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + XCVR_VENDOR_NAME_OFFSET), XCVR_VENDOR_NAME_WIDTH)
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if sfp_vendor_name_raw is not None:
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sfp_vendor_name_data = sfpi_obj.parse_vendor_name(sfp_vendor_name_raw, 0)
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else:
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return None
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sfp_vendor_pn_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + XCVR_VENDOR_PN_OFFSET), XCVR_VENDOR_PN_WIDTH)
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if sfp_vendor_pn_raw is not None:
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sfp_vendor_pn_data = sfpi_obj.parse_vendor_pn(sfp_vendor_pn_raw, 0)
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else:
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return None
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sfp_vendor_rev_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + XCVR_HW_REV_OFFSET), vendor_rev_width)
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if sfp_vendor_rev_raw is not None:
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sfp_vendor_rev_data = sfpi_obj.parse_vendor_rev(sfp_vendor_rev_raw, 0)
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else:
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return None
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sfp_vendor_sn_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + XCVR_VENDOR_SN_OFFSET), XCVR_VENDOR_SN_WIDTH)
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if sfp_vendor_sn_raw is not None:
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sfp_vendor_sn_data = sfpi_obj.parse_vendor_sn(sfp_vendor_sn_raw, 0)
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else:
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return None
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sfp_vendor_oui_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + XCVR_VENDOR_OUI_OFFSET), XCVR_VENDOR_OUI_WIDTH)
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if sfp_vendor_oui_raw is not None:
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sfp_vendor_oui_data = sfpi_obj.parse_vendor_oui(sfp_vendor_oui_raw, 0)
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else:
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return None
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sfp_vendor_date_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + XCVR_VENDOR_DATE_OFFSET), XCVR_VENDOR_DATE_WIDTH)
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if sfp_vendor_date_raw is not None:
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sfp_vendor_date_data = sfpi_obj.parse_vendor_date(sfp_vendor_date_raw, 0)
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else:
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return None
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transceiver_info_dict['type'] = sfp_interface_bulk_data['data']['type']['value']
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transceiver_info_dict['manufacturename'] = sfp_vendor_name_data['data']['Vendor Name']['value']
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transceiver_info_dict['modelname'] = sfp_vendor_pn_data['data']['Vendor PN']['value']
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transceiver_info_dict['hardwarerev'] = sfp_vendor_rev_data['data']['Vendor Rev']['value']
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transceiver_info_dict['serialnum'] = sfp_vendor_sn_data['data']['Vendor SN']['value']
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transceiver_info_dict['vendor_oui'] = sfp_vendor_oui_data['data']['Vendor OUI']['value']
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transceiver_info_dict['vendor_date'] = sfp_vendor_date_data['data']['VendorDataCode(YYYY-MM-DD Lot)']['value']
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transceiver_info_dict['Connector'] = sfp_interface_bulk_data['data']['Connector']['value']
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transceiver_info_dict['encoding'] = sfp_interface_bulk_data['data']['EncodingCodes']['value']
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transceiver_info_dict['ext_identifier'] = sfp_interface_bulk_data['data']['Extended Identifier']['value']
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transceiver_info_dict['ext_rateselect_compliance'] = sfp_interface_bulk_data['data']['RateIdentifier']['value']
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if sfp_type == 'QSFP':
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for key in qsfp_cable_length_tup:
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if key in sfp_interface_bulk_data['data']:
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transceiver_info_dict['cable_type'] = key
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transceiver_info_dict['cable_length'] = str(sfp_interface_bulk_data['data'][key]['value'])
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for key in qsfp_compliance_code_tup:
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if key in sfp_interface_bulk_data['data']['Specification compliance']['value']:
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compliance_code_dict[key] = sfp_interface_bulk_data['data']['Specification compliance']['value'][key]['value']
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transceiver_info_dict['specification_compliance'] = str(compliance_code_dict)
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transceiver_info_dict['nominal_bit_rate'] = str(sfp_interface_bulk_data['data']['Nominal Bit Rate(100Mbs)']['value'])
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else:
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for key in sfp_cable_length_tup:
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if key in sfp_interface_bulk_data['data']:
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transceiver_info_dict['cable_type'] = key
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transceiver_info_dict['cable_length'] = str(sfp_interface_bulk_data['data'][key]['value'])
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for key in sfp_compliance_code_tup:
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if key in sfp_interface_bulk_data['data']['Specification compliance']['value']:
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compliance_code_dict[key] = sfp_interface_bulk_data['data']['Specification compliance']['value'][key]['value']
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transceiver_info_dict['specification_compliance'] = str(compliance_code_dict)
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transceiver_info_dict['nominal_bit_rate'] = str(sfp_interface_bulk_data['data']['NominalSignallingRate(UnitsOf100Mbd)']['value'])
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return transceiver_info_dict
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def get_transceiver_dom_info_dict(self, port_num):
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transceiver_dom_info_dict = {}
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# Below part is added to avoid fail xcvrd
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# Currently, the way in which dom data is read has been changed from
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# using sysfs to using ethtool.
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# The ethtool returns None for ports without dom support, resulting in
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# None being returned. However, this fails xcvrd to add the
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# TRANSCEIVER_DOM_SENSOR table entry of associated port to CONFIG_DB
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# and then causes SNMP fail.
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# To address this issue a default dict is initialized with all data set to
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# 'N/A' and is returned is the above case.
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# BTW, in the original implementation which sysfs is used to read dom data,
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# even though non-None data is returned for ports without dom support,
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# it does not contain valid data. This can result in wrong data in
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# TRANSCEIVER_DOM_SENSOR table.
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transceiver_dom_info_dict['temperature'] = 'N/A'
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transceiver_dom_info_dict['voltage'] = 'N/A'
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transceiver_dom_info_dict['rx1power'] = 'N/A'
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transceiver_dom_info_dict['rx2power'] = 'N/A'
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transceiver_dom_info_dict['rx3power'] = 'N/A'
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transceiver_dom_info_dict['rx4power'] = 'N/A'
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transceiver_dom_info_dict['tx1bias'] = 'N/A'
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transceiver_dom_info_dict['tx2bias'] = 'N/A'
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transceiver_dom_info_dict['tx3bias'] = 'N/A'
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transceiver_dom_info_dict['tx4bias'] = 'N/A'
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transceiver_dom_info_dict['tx1power'] = 'N/A'
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transceiver_dom_info_dict['tx2power'] = 'N/A'
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transceiver_dom_info_dict['tx3power'] = 'N/A'
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transceiver_dom_info_dict['tx4power'] = 'N/A'
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if port_num in self.osfp_ports:
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pass
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elif port_num in self.qsfp_ports:
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offset = 0
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offset_xcvr = 128
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sfpd_obj = sff8436Dom()
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if sfpd_obj is None:
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return None
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sfpi_obj = sff8436InterfaceId()
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if sfpi_obj is None:
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return None
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# QSFP capability byte parse, through this byte can know whether it support tx_power or not.
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# TODO: in the future when decided to migrate to support SFF-8636 instead of SFF-8436,
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# need to add more code for determining the capability and version compliance
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# in SFF-8636 dom capability definitions evolving with the versions.
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qsfp_dom_capability_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset_xcvr + XCVR_DOM_CAPABILITY_OFFSET), XCVR_DOM_CAPABILITY_WIDTH)
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if qsfp_dom_capability_raw is not None:
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qspf_dom_capability_data = sfpi_obj.parse_qsfp_dom_capability(qsfp_dom_capability_raw, 0)
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else:
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return transceiver_dom_info_dict
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dom_temperature_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + QSFP_TEMPE_OFFSET), QSFP_TEMPE_WIDTH)
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if dom_temperature_raw is not None:
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dom_temperature_data = sfpd_obj.parse_temperature(dom_temperature_raw, 0)
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else:
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return transceiver_dom_info_dict
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dom_voltage_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + QSFP_VLOT_OFFSET), QSFP_VOLT_WIDTH)
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if dom_voltage_raw is not None:
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dom_voltage_data = sfpd_obj.parse_voltage(dom_voltage_raw, 0)
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else:
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return transceiver_dom_info_dict
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qsfp_dom_rev_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + QSFP_DOM_REV_OFFSET), QSFP_DOM_REV_WIDTH)
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if qsfp_dom_rev_raw is not None:
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qsfp_dom_rev_data = sfpd_obj.parse_sfp_dom_rev(qsfp_dom_rev_raw, 0)
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else:
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return transceiver_dom_info_dict
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transceiver_dom_info_dict['temperature'] = dom_temperature_data['data']['Temperature']['value']
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transceiver_dom_info_dict['voltage'] = dom_voltage_data['data']['Vcc']['value']
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# The tx_power monitoring is only available on QSFP which compliant with SFF-8636
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# and claimed that it support tx_power with one indicator bit.
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dom_channel_monitor_data = {}
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qsfp_dom_rev = qsfp_dom_rev_data['data']['dom_rev']['value']
|
||||
qsfp_tx_power_support = qspf_dom_capability_data['data']['Tx_power_support']['value']
|
||||
if (qsfp_dom_rev[0:8] != 'SFF-8636' or (qsfp_dom_rev[0:8] == 'SFF-8636' and qsfp_tx_power_support != 'on')):
|
||||
dom_channel_monitor_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + QSFP_CHANNL_MON_OFFSET), QSFP_CHANNL_MON_WIDTH)
|
||||
if dom_channel_monitor_raw is not None:
|
||||
dom_channel_monitor_data = sfpd_obj.parse_channel_monitor_params(dom_channel_monitor_raw, 0)
|
||||
else:
|
||||
return transceiver_dom_info_dict
|
||||
else:
|
||||
dom_channel_monitor_raw = self._read_eeprom_specific_bytes_via_ethtool(port_num, (offset + QSFP_CHANNL_MON_OFFSET), QSFP_CHANNL_MON_WITH_TX_POWER_WIDTH)
|
||||
if dom_channel_monitor_raw is not None:
|
||||
dom_channel_monitor_data = sfpd_obj.parse_channel_monitor_params_with_tx_power(dom_channel_monitor_raw, 0)
|
||||
else:
|
||||
return transceiver_dom_info_dict
|
||||
|
||||
transceiver_dom_info_dict['tx1power'] = dom_channel_monitor_data['data']['TX1Power']['value']
|
||||
transceiver_dom_info_dict['tx2power'] = dom_channel_monitor_data['data']['TX2Power']['value']
|
||||
transceiver_dom_info_dict['tx3power'] = dom_channel_monitor_data['data']['TX3Power']['value']
|
||||
transceiver_dom_info_dict['tx4power'] = dom_channel_monitor_data['data']['TX4Power']['value']
|
||||
|
||||
transceiver_dom_info_dict['temperature'] = dom_temperature_data['data']['Temperature']['value']
|
||||
transceiver_dom_info_dict['voltage'] = dom_voltage_data['data']['Vcc']['value']
|
||||
transceiver_dom_info_dict['rx1power'] = dom_channel_monitor_data['data']['RX1Power']['value']
|
||||
transceiver_dom_info_dict['rx2power'] = dom_channel_monitor_data['data']['RX2Power']['value']
|
||||
transceiver_dom_info_dict['rx3power'] = dom_channel_monitor_data['data']['RX3Power']['value']
|
||||
transceiver_dom_info_dict['rx4power'] = dom_channel_monitor_data['data']['RX4Power']['value']
|
||||
transceiver_dom_info_dict['tx1bias'] = dom_channel_monitor_data['data']['TX1Bias']['value']
|
||||
transceiver_dom_info_dict['tx2bias'] = dom_channel_monitor_data['data']['TX2Bias']['value']
|
||||
transceiver_dom_info_dict['tx3bias'] = dom_channel_monitor_data['data']['TX3Bias']['value']
|
||||
transceiver_dom_info_dict['tx4bias'] = dom_channel_monitor_data['data']['TX4Bias']['value']
|
||||
|
||||
else:
|
||||
offset = 256
|
||||
|
||||
eeprom_raw = ['0'] * 256
|
||||
eeprom_raw[92:92+16] = self._read_eeprom_specific_bytes_via_ethtool(port_num, 92, 16)
|
||||
sfp_obj = sff8472InterfaceId()
|
||||
calibration_type = sfp_obj._get_calibration_type(eeprom_raw)
|
||||
|
||||
eeprom_domraw = self._read_eeprom_specific_bytes_via_ethtool(port_num, offset, 256)
|
||||
if eeprom_domraw is None:
|
||||
return transceiver_dom_info_dict
|
||||
|
||||
sfpd_obj = sff8472Dom(None, calibration_type)
|
||||
if sfpd_obj is None:
|
||||
print "no sff8472Dom"
|
||||
return None
|
||||
|
||||
dom_temperature_raw = eeprom_domraw[SFP_TEMPE_OFFSET:SFP_TEMPE_OFFSET+SFP_TEMPE_WIDTH]
|
||||
dom_temperature_data = sfpd_obj.parse_temperature(dom_temperature_raw, 0)
|
||||
|
||||
dom_voltage_raw = eeprom_domraw[SFP_VLOT_OFFSET:SFP_VLOT_OFFSET+SFP_VOLT_WIDTH]
|
||||
dom_voltage_data = sfpd_obj.parse_voltage(dom_voltage_raw, 0)
|
||||
|
||||
dom_channel_monitor_raw = eeprom_domraw[SFP_CHANNL_MON_OFFSET:SFP_CHANNL_MON_OFFSET+SFP_CHANNL_MON_WIDTH]
|
||||
dom_channel_monitor_data = sfpd_obj.parse_channel_monitor_params(dom_channel_monitor_raw, 0)
|
||||
|
||||
transceiver_dom_info_dict['temperature'] = dom_temperature_data['data']['Temperature']['value']
|
||||
transceiver_dom_info_dict['voltage'] = dom_voltage_data['data']['Vcc']['value']
|
||||
transceiver_dom_info_dict['rx1power'] = dom_channel_monitor_data['data']['RXPower']['value']
|
||||
transceiver_dom_info_dict['tx1bias'] = dom_channel_monitor_data['data']['TXBias']['value']
|
||||
transceiver_dom_info_dict['tx1power'] = dom_channel_monitor_data['data']['TXPower']['value']
|
||||
|
||||
return transceiver_dom_info_dict
|
||||
|
||||
Loading…
Reference in New Issue
Block a user