Minigraph ECMP parsing support (cleaner format) (#4985)
Why I did it To support FG_ECMP scenarios - How I did it Modified minigraph parser to parse ECMP fields in the case they are present in minigraph - How to verify it Loaded ensuing config_db file on a DUT to verify the fields are parsed and configure device correctly
This commit is contained in:
kktheballer
GitHub
parent
a1fe203788
commit
ba92a081ce
@ -10,6 +10,7 @@ from collections import defaultdict
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from lxml import etree as ET
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from lxml.etree import QName
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from portconfig import get_port_config
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from sonic_py_common.multi_asic import get_asic_id_from_name
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from sonic_py_common.interface import backplane_prefix
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@ -105,7 +106,73 @@ def parse_device(device):
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return (lo_prefix, lo_prefix_v6, mgmt_prefix, name, hwsku, d_type, deployment_id)
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def parse_png(png, hname):
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def calculate_lcm_for_ecmp (nhdevices_bank_map, nhip_bank_map):
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banks_enumerated = {}
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lcm_array = []
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for value in nhdevices_bank_map.values():
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for key in nhip_bank_map.keys():
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if nhip_bank_map[key] == value:
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if value not in banks_enumerated:
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banks_enumerated[value] = 1
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else:
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banks_enumerated[value] = banks_enumerated[value] + 1
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for bank_enumeration in banks_enumerated.values():
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lcm_list = range(1, bank_enumeration+1)
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lcm_comp = lcm_list[0]
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for i in lcm_list[1:]:
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lcm_comp = lcm_comp * i / calculate_gcd(lcm_comp, i)
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lcm_array.append(lcm_comp)
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LCM = sum(lcm_array)
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return int(LCM)
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def calculate_gcd(x, y):
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while y != 0:
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(x, y) = (y, x % y)
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return int(x)
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def formulate_fine_grained_ecmp(version, dpg_ecmp_content, port_device_map, port_alias_map):
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family = ""
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tag = ""
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neigh_key = []
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if version == "ipv4":
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family = "IPV4"
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tag = "fgnhg_v4"
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elif version == "ipv6":
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family = "IPV6"
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tag = "fgnhg_v6"
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port_nhip_map = dpg_ecmp_content['port_nhip_map']
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nhgaddr = dpg_ecmp_content['nhgaddr']
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nhg_int = dpg_ecmp_content['nhg_int']
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nhip_device_map = {port_nhip_map[x]: port_device_map[x] for x in port_device_map
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if x in port_nhip_map}
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nhip_devices = sorted(list(set(nhip_device_map.values())))
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nhdevices_ip_bank_map = {device: bank for bank, device in enumerate(nhip_devices)}
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nhip_bank_map = {ip: nhdevices_ip_bank_map[device] for ip, device in nhip_device_map.items()}
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LCM = calculate_lcm_for_ecmp(nhdevices_ip_bank_map, nhip_bank_map)
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FG_NHG_MEMBER = {ip: {"FG_NHG": tag, "bank": bank} for ip, bank in nhip_bank_map.items()}
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nhip_port_map = dict(zip(port_nhip_map.values(), port_nhip_map.keys()))
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for nhip, memberinfo in FG_NHG_MEMBER.items():
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if nhip in nhip_port_map:
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memberinfo["link"] = port_alias_map[nhip_port_map[nhip]]
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FG_NHG_MEMBER[nhip] = memberinfo
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FG_NHG_PREFIX = {nhgaddr: {"FG_NHG": tag}}
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FG_NHG = {tag: {"bucket_size": LCM}}
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for ip in nhip_bank_map:
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neigh_key.append(str(nhg_int + "|" + ip))
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NEIGH = {neigh_key: {"family": family} for neigh_key in neigh_key}
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fine_grained_content = {"FG_NHG_MEMBER": FG_NHG_MEMBER, "FG_NHG": FG_NHG, "FG_NHG_PREFIX": FG_NHG_PREFIX, "NEIGH": NEIGH}
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return fine_grained_content
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def parse_png(png, hname, dpg_ecmp_content = None):
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neighbors = {}
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devices = {}
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console_dev = ''
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@ -116,6 +183,13 @@ def parse_png(png, hname):
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console_ports = {}
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mux_cable_ports = {}
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is_storage_device = False
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port_device_map = {}
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png_ecmp_content = {}
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FG_NHG_MEMBER = {}
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FG_NHG_PREFIX = {}
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FG_NHG = {}
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NEIGH = {}
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for child in png:
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if child.tag == str(QName(ns, "DeviceInterfaceLinks")):
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for link in child.findall(str(QName(ns, "DeviceLinkBase"))):
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@ -141,6 +215,11 @@ def parse_png(png, hname):
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}
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continue
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if linktype == "DeviceInterfaceLink":
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endport = link.find(str(QName(ns, "EndPort"))).text
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startdevice = link.find(str(QName(ns, "StartDevice"))).text
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port_device_map[endport] = startdevice
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if linktype != "DeviceInterfaceLink" and linktype != "UnderlayInterfaceLink":
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continue
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@ -196,6 +275,7 @@ def parse_png(png, hname):
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elif node.tag == str(QName(ns, "EndDevice")):
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mgmt_dev = node.text
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if child.tag == str(QName(ns, "DeviceInterfaceLinks")):
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for link in child.findall(str(QName(ns, 'DeviceLinkBase'))):
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if link.find(str(QName(ns, "ElementType"))).text == "LogicalLink":
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@ -205,7 +285,19 @@ def parse_png(png, hname):
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mux_cable_ports[intf_name] = "true"
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return (neighbors, devices, console_dev, console_port, mgmt_dev, mgmt_port, port_speeds, console_ports, mux_cable_ports, is_storage_device)
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if (len(dpg_ecmp_content)):
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for version, content in dpg_ecmp_content.items(): # version is ipv4 or ipv6
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fine_grained_content = formulate_fine_grained_ecmp(version, content, port_device_map, port_alias_map) # port_alias_map
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FG_NHG_MEMBER.update(fine_grained_content['FG_NHG_MEMBER'])
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FG_NHG_PREFIX.update(fine_grained_content['FG_NHG_PREFIX'])
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FG_NHG.update(fine_grained_content['FG_NHG'])
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NEIGH.update(fine_grained_content['NEIGH'])
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png_ecmp_content = {"FG_NHG_PREFIX": FG_NHG_PREFIX, "FG_NHG_MEMBER": FG_NHG_MEMBER, "FG_NHG": FG_NHG,
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"NEIGH": NEIGH}
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return (neighbors, devices, console_dev, console_port, mgmt_dev, mgmt_port, port_speeds, console_ports, mux_cable_ports, is_storage_device, png_ecmp_content)
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def parse_asic_external_link(link, asic_name, hostname):
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neighbors = {}
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@ -295,6 +387,8 @@ def parse_asic_png(png, asic_name, hostname):
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if lo_prefix_v6:
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device_data['lo_addr_v6']= lo_prefix_v6
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devices[name] = device_data
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return (neighbors, devices, port_speeds)
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def parse_loopback_intf(child):
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@ -339,12 +433,13 @@ def parse_dpg(dpg, hname):
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ipintfs = child.find(str(QName(ns, "IPInterfaces")))
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intfs = {}
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ip_intfs_map = {}
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for ipintf in ipintfs.findall(str(QName(ns, "IPInterface"))):
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intfalias = ipintf.find(str(QName(ns, "AttachTo"))).text
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intfname = port_alias_map.get(intfalias, intfalias)
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ipprefix = ipintf.find(str(QName(ns, "Prefix"))).text
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intfs[(intfname, ipprefix)] = {}
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ip_intfs_map[ipprefix] = intfalias
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lo_intfs = parse_loopback_intf(child)
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mvrfConfigs = child.find(str(QName(ns, "MgmtVrfConfigs")))
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@ -381,7 +476,46 @@ def parse_dpg(dpg, hname):
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pcs[pcintfname] = {'members': pcmbr_list, 'fallback': pcintf.find(str(QName(ns, "Fallback"))).text, 'min_links': str(int(math.ceil(len() * 0.75)))}
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else:
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pcs[pcintfname] = {'members': pcmbr_list, 'min_links': str(int(math.ceil(len(pcmbr_list) * 0.75)))}
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port_nhipv4_map = {}
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port_nhipv6_map = {}
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nhgaddr = ["", ""]
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nhg_int = ""
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nhportlist = []
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dpg_ecmp_content = {}
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ipnhs = child.find(str(QName(ns, "IPNextHops")))
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if ipnhs is not None:
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for ipnh in ipnhs.findall(str(QName(ns, "IPNextHop"))):
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if ipnh.find(str(QName(ns, "Type"))).text == 'FineGrainedECMPGroupMember':
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ipnhfmbr = ipnh.find(str(QName(ns, "AttachTo"))).text
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ipnhaddr = ipnh.find(str(QName(ns, "Address"))).text
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nhportlist.append(ipnhfmbr)
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if "." in ipnhaddr:
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port_nhipv4_map[ipnhfmbr] = ipnhaddr
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elif ":" in ipnhaddr:
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port_nhipv6_map[ipnhfmbr] = ipnhaddr
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if port_nhipv4_map is not None and port_nhipv6_map is not None:
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subnet_check_ip = list(port_nhipv4_map.values())[0]
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for subnet_range in ip_intfs_map:
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if ("." in subnet_range):
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a = ipaddress.ip_address(UNICODE_TYPE(subnet_check_ip))
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n = list(ipaddress.ip_network(UNICODE_TYPE(subnet_range), False).hosts())
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if a in n:
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nhg_int = ip_intfs_map[subnet_range]
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dwnstrms = child.find(str(QName(ns, "DownstreamSummarySet")))
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for dwnstrm in dwnstrms.findall(str(QName(ns, "DownstreamSummary"))):
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dwnstrmentry = str(ET.tostring(dwnstrm))
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if ("FineGrainedECMPGroupDestination" in dwnstrmentry):
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subnet_ip = dwnstrm.find(str(QName(ns1, "Subnet"))).text
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truncsubnet_ip = subnet_ip.split("/")[0]
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if "." in (truncsubnet_ip):
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nhgaddr[0] = subnet_ip
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elif ":" in (truncsubnet_ip):
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nhgaddr[1] = subnet_ip
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ipv4_content = {"port_nhip_map": port_nhipv4_map, "nhgaddr": nhgaddr[0], "nhg_int": nhg_int}
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ipv6_content = {"port_nhip_map": port_nhipv6_map, "nhgaddr": nhgaddr[1], "nhg_int": nhg_int}
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dpg_ecmp_content['ipv4'] = ipv4_content
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dpg_ecmp_content['ipv6'] = ipv6_content
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vlanintfs = child.find(str(QName(ns, "VlanInterfaces")))
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vlan_intfs = []
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vlans = {}
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@ -503,6 +637,7 @@ def parse_dpg(dpg, hname):
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except:
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print("Warning: Ignoring Control Plane ACL %s without type" % aclname, file=sys.stderr)
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mg_tunnels = child.find(str(QName(ns, "TunnelInterfaces")))
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if mg_tunnels is not None:
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table_key_to_mg_key_map = {"encap_ecn_mode": "EcnEncapsulationMode",
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@ -521,7 +656,7 @@ def parse_dpg(dpg, hname):
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if mg_key in mg_tunnel.attrib:
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tunnelintfs[tunnel_type][tunnel_name][table_key] = mg_tunnel.attrib[mg_key]
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return intfs, lo_intfs, mvrf, mgmt_intf, vlans, vlan_members, pcs, pc_members, acls, vni, tunnelintfs
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return intfs, lo_intfs, mvrf, mgmt_intf, vlans, vlan_members, pcs, pc_members, acls, vni, tunnelintfs, dpg_ecmp_content
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return None, None, None, None, None, None, None, None, None, None
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def parse_host_loopback(dpg, hname):
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@ -927,6 +1062,8 @@ def parse_xml(filename, platform=None, port_config_file=None, asic_name=None, hw
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bgp_monitors = []
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bgp_asn = None
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intfs = None
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dpg_ecmp_content = {}
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png_ecmp_content = {}
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vlan_intfs = None
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pc_intfs = None
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tunnel_intfs = None
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@ -988,13 +1125,13 @@ def parse_xml(filename, platform=None, port_config_file=None, asic_name=None, hw
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for child in root:
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if asic_name is None:
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if child.tag == str(QName(ns, "DpgDec")):
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(intfs, lo_intfs, mvrf, mgmt_intf, vlans, vlan_members, pcs, pc_members, acls, vni, tunnel_intfs) = parse_dpg(child, hostname)
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(intfs, lo_intfs, mvrf, mgmt_intf, vlans, vlan_members, pcs, pc_members, acls, vni, tunnel_intfs, dpg_ecmp_content) = parse_dpg(child, hostname)
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elif child.tag == str(QName(ns, "CpgDec")):
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(bgp_sessions, bgp_internal_sessions, bgp_asn, bgp_peers_with_range, bgp_monitors) = parse_cpg(child, hostname)
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elif child.tag == str(QName(ns, "PngDec")):
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(neighbors, devices, console_dev, console_port, mgmt_dev, mgmt_port, port_speed_png, console_ports, mux_cable_ports, is_storage_device) = parse_png(child, hostname)
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(neighbors, devices, console_dev, console_port, mgmt_dev, mgmt_port, port_speed_png, console_ports, mux_cable_ports, is_storage_device, png_ecmp_content) = parse_png(child, hostname, dpg_ecmp_content)
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elif child.tag == str(QName(ns, "UngDec")):
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(u_neighbors, u_devices, _, _, _, _, _, _) = parse_png(child, hostname)
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(u_neighbors, u_devices, _, _, _, _, _, _) = parse_png(child, hostname, None)
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elif child.tag == str(QName(ns, "MetadataDeclaration")):
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(syslog_servers, dhcp_servers, ntp_servers, tacacs_servers, mgmt_routes, erspan_dst, deployment_id, region, cloudtype, resource_type) = parse_meta(child, hostname)
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elif child.tag == str(QName(ns, "LinkMetadataDeclaration")):
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@ -1003,7 +1140,7 @@ def parse_xml(filename, platform=None, port_config_file=None, asic_name=None, hw
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(port_speeds_default, port_descriptions) = parse_deviceinfo(child, hwsku)
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else:
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if child.tag == str(QName(ns, "DpgDec")):
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(intfs, lo_intfs, mvrf, mgmt_intf, vlans, vlan_members, pcs, pc_members, acls, vni, tunnel_intfs) = parse_dpg(child, asic_name)
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(intfs, lo_intfs, mvrf, mgmt_intf, vlans, vlan_members, pcs, pc_members, acls, vni, tunnel_intfs, dpg_ecmp_content) = parse_dpg(child, asic_name)
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host_lo_intfs = parse_host_loopback(child, hostname)
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elif child.tag == str(QName(ns, "CpgDec")):
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(bgp_sessions, bgp_internal_sessions, bgp_asn, bgp_peers_with_range, bgp_monitors) = parse_cpg(child, asic_name, local_devices)
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@ -1305,6 +1442,13 @@ def parse_xml(filename, platform=None, port_config_file=None, asic_name=None, hw
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'client_crt_cname': 'client.restapi.sonic'
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}
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}
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if len(png_ecmp_content):
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results['FG_NHG_MEMBER'] = png_ecmp_content['FG_NHG_MEMBER']
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results['FG_NHG_PREFIX'] = png_ecmp_content['FG_NHG_PREFIX']
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results['FG_NHG'] = png_ecmp_content['FG_NHG']
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results['NEIGH'] = png_ecmp_content['NEIGH']
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# Do not configure the minigraph's mirror session, which is currently unused
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# mirror_sessions = {}
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# if erspan_dst:
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1591
src/sonic-config-engine/tests/fg-ecmp-sample-minigraph.xml
Normal file
1591
src/sonic-config-engine/tests/fg-ecmp-sample-minigraph.xml
Normal file
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,65 @@
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# name lanes alias index
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Ethernet0 0,1,2,3 etp1 1
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Ethernet4 4,5,6,7 etp2 2
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Ethernet8 8,9,10,11 etp3 3
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Ethernet12 12,13,14,15 etp4 4
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Ethernet16 16,17,18,19 etp5 5
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Ethernet20 20,21,22,23 etp6 6
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Ethernet24 24,25,26,27 etp7 7
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Ethernet28 28,29,30,31 etp8 8
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Ethernet32 32,33,34,35 etp9 9
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Ethernet36 36,37,38,39 etp10 10
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Ethernet40 40,41,42,43 etp11 11
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Ethernet44 44,45,46,47 etp12 12
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Ethernet48 48,49,50,51 etp13 13
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Ethernet52 52,53,54,55 etp14 14
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Ethernet56 56,57,58,59 etp15 15
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Ethernet60 60,61,62,63 etp16 16
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Ethernet64 64,65,66,67 etp17 17
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Ethernet68 68,69,70,71 etp18 18
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Ethernet72 72,73,74,75 etp19 19
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Ethernet76 76,77,78,79 etp20 20
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Ethernet80 80,81,82,83 etp21 21
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Ethernet84 84,85,86,87 etp22 22
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Ethernet88 88,89,90,91 etp23 23
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Ethernet92 92,93,94,95 etp24 24
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Ethernet96 96,97,98,99 etp25 25
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Ethernet100 100,101,102,103 etp26 26
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Ethernet104 104,105,106,107 etp27 27
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Ethernet108 108,109,110,111 etp28 28
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Ethernet112 112,113,114,115 etp29 29
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Ethernet116 116,117,118,119 etp30 30
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Ethernet120 120,121,122,123 etp31 31
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Ethernet124 124,125,126,127 etp32 32
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Ethernet128 128,129,130,131 etp33 33
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Ethernet132 132,133,134,135 etp34 34
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Ethernet136 136,137,138,139 etp35 35
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Ethernet140 140,141,142,143 etp36 36
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Ethernet144 144,145,146,147 etp37 37
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Ethernet148 148,149,150,151 etp38 38
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Ethernet152 152,153,154,155 etp39 39
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Ethernet156 156,157,158,159 etp40 40
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Ethernet160 160,161,162,163 etp41 41
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Ethernet164 164,165,166,167 etp42 42
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Ethernet168 168,169,170,171 etp43 43
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Ethernet172 172,173,174,175 etp44 44
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Ethernet176 176,177,178,179 etp45 45
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Ethernet180 180,181,182,183 etp46 46
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Ethernet184 184,185,186,187 etp47 47
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Ethernet188 188,189,190,191 etp48 48
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Ethernet192 192,193,194,195 etp49 49
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Ethernet196 196,197,198,199 etp50 50
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Ethernet200 200,201,202,203 etp51 51
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Ethernet204 204,205,206,207 etp52 52
|
||||
Ethernet208 208,209,210,211 etp53 53
|
||||
Ethernet212 212,213,214,215 etp54 54
|
||||
Ethernet216 216,217,218,219 etp55 55
|
||||
Ethernet220 220,221,222,223 etp56 56
|
||||
Ethernet224 224,225,226,227 etp57 57
|
||||
Ethernet228 228,229,230,231 etp58 58
|
||||
Ethernet232 232,233,234,235 etp59 59
|
||||
Ethernet236 236,237,238,239 etp60 60
|
||||
Ethernet240 240,241,242,243 etp61 61
|
||||
Ethernet244 244,245,246,247 etp62 62
|
||||
Ethernet248 248,249,250,251 etp63 63
|
||||
Ethernet252 252,253,254,255 etp64 64
|
||||
@ -23,8 +23,10 @@ class TestCfgGen(TestCase):
|
||||
self.sample_graph_bgp_speaker = os.path.join(self.test_dir, 't0-sample-bgp-speaker.xml')
|
||||
self.sample_device_desc = os.path.join(self.test_dir, 'device.xml')
|
||||
self.port_config = os.path.join(self.test_dir, 't0-sample-port-config.ini')
|
||||
self.mlnx_port_config = os.path.join(self.test_dir, 'mellanox-sample-port-config.ini')
|
||||
self.output_file = os.path.join(self.test_dir, 'output')
|
||||
self.output2_file = os.path.join(self.test_dir, 'output2')
|
||||
self.ecmp_graph = os.path.join(self.test_dir, 'fg-ecmp-sample-minigraph.xml')
|
||||
|
||||
def tearDown(self):
|
||||
try:
|
||||
@ -222,6 +224,34 @@ class TestCfgGen(TestCase):
|
||||
output = self.run_script(argument)
|
||||
self.assertEqual(output.strip(), "[('Vlan1000', '192.168.0.1/27'), 'Vlan1000']")
|
||||
|
||||
def test_minigraph_ecmp_fg_nhg(self):
|
||||
argument = '-m "' + self.ecmp_graph + '" -p "' + self.mlnx_port_config + '" -v \"FG_NHG.values()|list\"'
|
||||
output = self.run_script(argument)
|
||||
self.assertEqual(output.strip(), "[{'bucket_size': 120}, {'bucket_size': 120}]")
|
||||
|
||||
def test_minigraph_ecmp_members(self):
|
||||
argument = '-m "' + self.ecmp_graph + '" -p "' + self.mlnx_port_config + '" -v "FG_NHG_MEMBER.keys()|list|sort"'
|
||||
output = self.run_script(argument)
|
||||
self.assertEqual(output.strip(), "['200.200.200.1', '200.200.200.10', '200.200.200.2', '200.200.200.3', '200.200.200.4', '200.200.200.5',"
|
||||
" '200.200.200.6', '200.200.200.7', '200.200.200.8', '200.200.200.9', '200:200:200:200::1', '200:200:200:200::10',"
|
||||
" '200:200:200:200::2', '200:200:200:200::3', '200:200:200:200::4', '200:200:200:200::5', '200:200:200:200::6',"
|
||||
" '200:200:200:200::7', '200:200:200:200::8', '200:200:200:200::9']")
|
||||
|
||||
def test_minigraph_ecmp_neighbors(self):
|
||||
argument = '-m "' + self.ecmp_graph + '" -p "' + self.mlnx_port_config + '" -v "NEIGH.keys()|list|sort"'
|
||||
output = self.run_script(argument)
|
||||
self.assertEqual(output.strip(), "['Vlan31|200.200.200.1', 'Vlan31|200.200.200.10', 'Vlan31|200.200.200.2', 'Vlan31|200.200.200.3',"
|
||||
" 'Vlan31|200.200.200.4', 'Vlan31|200.200.200.5', 'Vlan31|200.200.200.6', 'Vlan31|200.200.200.7',"
|
||||
" 'Vlan31|200.200.200.8', 'Vlan31|200.200.200.9', 'Vlan31|200:200:200:200::1', 'Vlan31|200:200:200:200::10',"
|
||||
" 'Vlan31|200:200:200:200::2', 'Vlan31|200:200:200:200::3', 'Vlan31|200:200:200:200::4', 'Vlan31|200:200:200:200::5', "
|
||||
"'Vlan31|200:200:200:200::6', 'Vlan31|200:200:200:200::7', 'Vlan31|200:200:200:200::8', 'Vlan31|200:200:200:200::9']")
|
||||
|
||||
def test_minigraph_ecmp_prefixes(self):
|
||||
argument = '-m "' + self.ecmp_graph + '" -p "' + self.mlnx_port_config + '" -v "FG_NHG_PREFIX.keys()|list|sort"'
|
||||
output = self.run_script(argument)
|
||||
self.assertEqual(output.strip(), "['100.50.25.12/32', 'fc:5::/128']")
|
||||
|
||||
|
||||
def test_minigraph_portchannels(self):
|
||||
argument = '-m "' + self.sample_graph_simple + '" -p "' + self.port_config + '" -v PORTCHANNEL'
|
||||
output = self.run_script(argument)
|
||||
|
||||
Reference in New Issue
Block a user