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https://github.com/FRRouting/frr.git
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6a75d33b5c
Issue: When 514 inerfaces/neighbors are configured, it creates socket error, "Cannot allocate memory", when back to back V6 RA messages are tried to be sent over the socket. This prevents interface, to know its peer's link local address. Socket error comes when 1) try to join ICMPv6 all router multicast group, back to back for all interfaces 2)send back to back RA for all interfaces Fix: 1)For ICMPv6 join case, we check if the interface has already joined all router group, if not try to join. On failure, retry joining after random amount of time determined 1 ms to ICMPV6_JOIN_TIMER_EXP_MS(100 ms) 2) For RA issue case, batch sending of RA mesages using wheel timer Testing: Monitor BGP session running sh bgp summary command Before fix: r1# sh bgp summary IPv4 Unicast Summary: BGP router identifier 192.168.1.1, local AS number 1001 VRF default vrf-id 0 BGP table version 0 RIB entries 0, using 0 bytes of memory Peers 515, using 12 MiB of memory Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd PfxSnt Desc r1-eth0 4 1002 89 90 0 0 0 00:07:10 0 0 N/A r1-eth1 4 1002 89 90 0 0 0 00:07:10 0 0 N/A r1-eth2 4 1002 89 90 0 0 0 00:07:10 0 0 N/A r1-eth3 4 1002 89 90 0 0 0 00:07:10 0 0 N/A r1-eth4 4 1002 89 90 0 0 0 00:07:10 0 0 N/A r1-eth5 4 1002 89 90 0 0 0 00:07:10 0 0 N/A …..<snip>... r1-eth252 4 1002 31 29 0 0 0 00:02:08 0 0 N/A r1-eth253 4 1002 31 29 0 0 0 00:02:08 0 0 N/A r1-eth254 4 1002 31 29 0 0 0 00:02:08 0 0 N/A r1-eth255 4 1002 31 29 0 0 0 00:02:08 0 0 N/A r1-eth256 4 0 0 0 0 0 0 never Idle 0 N/A r1-eth257 4 0 0 0 0 0 0 never Idle 0 N/A r1-eth258 4 0 0 0 0 0 0 never Idle 0 N/A r1-eth259 4 0 0 0 0 0 0 never Idle 0 N/A r1-eth260 4 0 0 0 0 0 0 never Idle 0 N/A ……..<snip>….. r1-eth511 4 0 0 0 0 0 0 never Idle 0 N/A r1-eth512 4 0 0 0 0 0 0 never Idle 0 N/A r1-eth513 4 0 0 0 0 0 0 never Idle 0 N/A r1-eth514 4 0 0 0 0 0 0 never Idle 0 N/A After fix: r1# show bgp summary IPv4 Unicast Summary: BGP router identifier 192.168.1.1, local AS number 1001 VRF default vrf-id 0 BGP table version 0 RIB entries 0, using 0 bytes of memory Peers 515, using 12 MiB of memory Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd PfxSnt Desc r1-eth0 4 1002 87 87 0 0 0 00:07:04 0 0 N/A r1-eth1 4 1002 87 87 0 0 0 00:07:04 0 0 N/A r1-eth2 4 1002 87 87 0 0 0 00:07:04 0 0 N/A r1-eth3 4 1002 64 67 0 0 0 00:05:09 0 0 N/A r1-eth4 4 1002 87 87 0 0 0 00:07:04 0 0 N/A r1-eth5 4 1002 87 87 0 0 0 00:07:04 0 0 N/A r1-eth6 4 1002 67 70 0 0 0 00:05:22 0 0 N/A r1-eth7 4 1002 87 87 0 0 0 00:07:04 0 0 N/A r1-eth8 4 1002 87 87 0 0 0 00:07:04 0 0 N/A .... r1-eth499 4 1002 43 43 0 0 0 00:03:22 0 0 N/A r1-eth500 4 1002 43 43 0 0 0 00:03:22 0 0 N/A r1-eth501 4 1002 19 22 0 0 0 00:01:21 0 0 N/A r1-eth502 4 1002 43 43 0 0 0 00:03:22 0 0 N/A r1-eth503 4 1002 43 43 0 0 0 00:03:22 0 0 N/A r1-eth504 4 1002 20 23 0 0 0 00:01:30 0 0 N/A r1-eth505 4 1002 43 43 0 0 0 00:03:22 0 0 N/A r1-eth506 4 1002 43 43 0 0 0 00:03:22 0 0 N/A r1-eth507 4 1002 22 25 0 0 0 00:01:39 0 0 N/A r1-eth508 4 1002 43 43 0 0 0 00:03:22 0 0 N/A r1-eth509 4 1002 17 20 0 0 0 00:01:13 0 0 N/A r1-eth510 4 1002 43 43 0 0 0 00:03:22 0 0 N/A r1-eth511 4 1002 43 43 0 0 0 00:03:22 0 0 N/A r1-eth512 4 1002 19 22 0 0 0 00:01:22 0 0 N/A r1-eth513 4 1002 43 43 0 0 0 00:03:22 0 0 N/A r1-eth514 4 1002 43 43 0 0 0 00:03:22 0 0 N/A Signed-off-by: Soumya Roy <souroy@nvidia.com>
106 lines
2.3 KiB
Python
106 lines
2.3 KiB
Python
#!/usr/bin/env python
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# SPDX-License-Identifier: ISC
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#
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# test_high_ecmp.py
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#
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# Copyright (c) 2024 by
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# Nvidia Corporation
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# Donald Sharp
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#
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"""
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test_high_ecmp.py: Testing two routers with 256 interfaces and BGP setup
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on it.
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"""
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import os
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import re
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import sys
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import pytest
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import json
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pytestmark = [pytest.mark.bgpd]
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# Save the Current Working Directory to find configuration files.
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CWD = os.path.dirname(os.path.realpath(__file__))
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sys.path.append(os.path.join(CWD, "../"))
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# pylint: disable=C0413
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# Import topogen and topotest helpers
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from lib import topotest
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from lib.topogen import Topogen, TopoRouter, get_topogen
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from lib.topolog import logger
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# Required to instantiate the topology builder class.
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#####################################################
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##
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## Network Topology Definition
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##
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#####################################################
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def build_topo(tgen):
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tgen.add_router("r1")
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tgen.add_router("r2")
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r1 = tgen.gears["r1"]
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r2 = tgen.gears["r2"]
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# Let's create 257 interfaces between the two switches
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for switch in range(1, 257):
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switch = tgen.add_switch("sw{}".format(switch))
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switch.add_link(r1)
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switch.add_link(r2)
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#####################################################
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##
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## Tests starting
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##
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#####################################################
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def setup_module(module):
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"Setup topology"
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tgen = Topogen(build_topo, module.__name__)
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tgen.start_topology()
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# This is a sample of configuration loading.
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router_list = tgen.routers()
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for rname, router in router_list.items():
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router.load_frr_config(
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os.path.join(CWD, "{}/frr.conf".format(rname)),
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[
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(TopoRouter.RD_ZEBRA, "-s 180000000"),
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(TopoRouter.RD_BGP, None),
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(TopoRouter.RD_SHARP, None),
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],
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)
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tgen.start_router()
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def teardown_module(_mod):
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"Teardown the pytest environment"
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tgen = get_topogen()
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# This function tears down the whole topology.
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tgen.stop_topology()
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def test_nothing():
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"Do Nothing"
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tgen = get_topogen()
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# Don't run this test if we have any failure.
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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if __name__ == "__main__":
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args = ["-s"] + sys.argv[1:]
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sys.exit(pytest.main(args))
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