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tests: Adding new test suite bgp_as_allow_in
1. Added 5 test cases to verify BGP AS-allow-in behavior in FRR 2. Enhanced framework to support BGP AS-allow-in config(lib/bgp.py) 3. Added API in bgp.py to verify BGP RIB table(lib/bgp.py) Signed-off-by: Kuldeep Kashyap <kashyapk@vmware.com>
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Kuldeep Kashyap
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fdf44b9038
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@ -1953,3 +1953,252 @@ def verify_bgp_rib(tgen, addr_type, dut, input_dict, next_hop=None, aspath=None)
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logger.debug("Exiting lib API: verify_bgp_rib()")
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logger.debug("Exiting lib API: verify_bgp_rib()")
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return True
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return True
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@retry(attempts=5, wait=2, return_is_str=True, initial_wait=2)
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def verify_bgp_rib(tgen, addr_type, dut, input_dict, next_hop=None, aspath=None):
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"""
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This API is to verify whether bgp rib has any
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matching route for a nexthop.
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Parameters
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----------
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* `tgen`: topogen object
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* `dut`: input dut router name
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* `addr_type` : ip type ipv4/ipv6
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* `input_dict` : input dict, has details of static routes
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* `next_hop`[optional]: next_hop which needs to be verified,
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default = static
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* 'aspath'[optional]: aspath which needs to be verified
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Usage
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-----
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dut = 'r1'
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next_hop = "192.168.1.10"
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input_dict = topo['routers']
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aspath = "100 200 300"
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result = verify_bgp_rib(tgen, addr_type, dut, tgen, input_dict,
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next_hop, aspath)
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Returns
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-------
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errormsg(str) or True
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"""
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logger.debug("Entering lib API: verify_bgp_rib()")
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router_list = tgen.routers()
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additional_nexthops_in_required_nhs = []
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list1 = []
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list2 = []
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for routerInput in input_dict.keys():
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for router, rnode in router_list.iteritems():
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if router != dut:
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continue
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# Verifying RIB routes
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command = "show bgp"
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# Static routes
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sleep(2)
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logger.info("Checking router {} BGP RIB:".format(dut))
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if "static_routes" in input_dict[routerInput]:
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static_routes = input_dict[routerInput]["static_routes"]
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for static_route in static_routes:
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found_routes = []
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missing_routes = []
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st_found = False
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nh_found = False
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vrf = static_route.setdefault("vrf", None)
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if vrf:
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cmd = "{} vrf {} {}".format(command, vrf, addr_type)
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else:
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cmd = "{} {}".format(command, addr_type)
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cmd = "{} json".format(cmd)
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rib_routes_json = run_frr_cmd(rnode, cmd, isjson=True)
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# Verifying output dictionary rib_routes_json is not empty
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if bool(rib_routes_json) == False:
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errormsg = "No route found in rib of router {}..".format(router)
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return errormsg
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network = static_route["network"]
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if "no_of_ip" in static_route:
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no_of_ip = static_route["no_of_ip"]
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else:
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no_of_ip = 1
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# Generating IPs for verification
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ip_list = generate_ips(network, no_of_ip)
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for st_rt in ip_list:
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st_rt = str(ipaddr.IPNetwork(unicode(st_rt)))
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_addr_type = validate_ip_address(st_rt)
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if _addr_type != addr_type:
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continue
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if st_rt in rib_routes_json["routes"]:
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st_found = True
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found_routes.append(st_rt)
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if next_hop:
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if not isinstance(next_hop, list):
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next_hop = [next_hop]
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list1 = next_hop
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found_hops = [
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rib_r["ip"]
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for rib_r in rib_routes_json["routes"][st_rt][0][
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"nexthops"
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]
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]
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list2 = found_hops
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missing_list_of_nexthops = set(list2).difference(list1)
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additional_nexthops_in_required_nhs = set(
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list1
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).difference(list2)
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if list2:
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if additional_nexthops_in_required_nhs:
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logger.info(
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"Missing nexthop %s for route"
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" %s in RIB of router %s\n",
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additional_nexthops_in_required_nhs,
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st_rt,
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dut,
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)
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errormsg = (
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"Nexthop {} is Missing for "
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"route {} in RIB of router {}\n".format(
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additional_nexthops_in_required_nhs,
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st_rt,
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dut,
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)
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)
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return errormsg
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else:
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nh_found = True
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if aspath:
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found_paths = rib_routes_json["routes"][st_rt][0][
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"path"
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]
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if aspath == found_paths:
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aspath_found = True
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logger.info(
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"Found AS path {} for route"
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" {} in RIB of router "
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"{}\n".format(aspath, st_rt, dut)
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)
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else:
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errormsg = (
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"AS Path {} is missing for route"
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"for route {} in RIB of router {}\n".format(
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aspath, st_rt, dut
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)
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)
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return errormsg
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else:
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missing_routes.append(st_rt)
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if nh_found:
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logger.info(
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"Found next_hop {} for all bgp"
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" routes in RIB of"
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" router {}\n".format(next_hop, router)
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)
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if len(missing_routes) > 0:
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errormsg = (
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"Missing route in RIB of router {}, "
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"routes: {}\n".format(dut, missing_routes)
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)
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return errormsg
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if found_routes:
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logger.info(
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"Verified routes in router {} BGP RIB, "
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"found routes are: {} \n".format(dut, found_routes)
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)
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continue
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if "bgp" not in input_dict[routerInput]:
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continue
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# Advertise networks
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bgp_data_list = input_dict[routerInput]["bgp"]
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if type(bgp_data_list) is not list:
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bgp_data_list = [bgp_data_list]
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for bgp_data in bgp_data_list:
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vrf_id = bgp_data.setdefault("vrf", None)
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if vrf_id:
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cmd = "{} vrf {} {}".format(command, vrf_id, addr_type)
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else:
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cmd = "{} {}".format(command, addr_type)
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cmd = "{} json".format(cmd)
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rib_routes_json = run_frr_cmd(rnode, cmd, isjson=True)
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# Verifying output dictionary rib_routes_json is not empty
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if bool(rib_routes_json) == False:
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errormsg = "No route found in rib of router {}..".format(router)
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return errormsg
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bgp_net_advertise = bgp_data["address_family"][addr_type]["unicast"]
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advertise_network = bgp_net_advertise.setdefault(
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"advertise_networks", []
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)
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for advertise_network_dict in advertise_network:
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found_routes = []
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missing_routes = []
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found = False
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network = advertise_network_dict["network"]
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if "no_of_network" in advertise_network_dict:
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no_of_network = advertise_network_dict["no_of_network"]
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else:
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no_of_network = 1
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# Generating IPs for verification
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ip_list = generate_ips(network, no_of_network)
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for st_rt in ip_list:
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st_rt = str(ipaddr.IPNetwork(unicode(st_rt)))
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_addr_type = validate_ip_address(st_rt)
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if _addr_type != addr_type:
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continue
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if st_rt in rib_routes_json["routes"]:
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found = True
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found_routes.append(st_rt)
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else:
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found = False
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missing_routes.append(st_rt)
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if len(missing_routes) > 0:
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errormsg = (
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"Missing route in BGP RIB of router {},"
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" are: {}\n".format(dut, missing_routes)
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)
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return errormsg
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if found_routes:
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logger.info(
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"Verified routes in router {} BGP RIB, found "
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"routes are: {}\n".format(dut, found_routes)
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)
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logger.debug("Exiting lib API: verify_bgp_rib()")
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return True
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