AT_BANNER([bfd]) m4_define([BFD_CHECK], [ AT_CHECK([ovs-appctl bfd/show $1 | sed -e '/Time:/d' | sed -e '/Discriminator/d' | sed -e '/Interval:/d'],[0], [dnl Forwarding: $2 Detect Multiplier: 3 Concatenated Path Down: $3 Local Flags: $4 Local Session State: $5 Local Diagnostic: $6 Remote Flags: $7 Remote Session State: $8 Remote Diagnostic: $9 ]) ]) m4_define([BFD_CHECK_TX], [ AT_CHECK([ovs-appctl bfd/show $1 | sed -n '/TX Interval/p'],[0], [dnl TX Interval: Approx $2 Local Minimum TX Interval: $3 Remote Minimum TX Interval: $4 ]) ]) m4_define([BFD_CHECK_RX], [ AT_CHECK([ovs-appctl bfd/show $1 | sed -n '/RX Interval/p'],[0], [dnl RX Interval: Approx $2 Local Minimum RX Interval: $3 Remote Minimum RX Interval: $4 ]) ]) AT_SETUP([bfd - basic config on different bridges]) #Create 2 bridges connected by patch ports and enable BFD OVS_VSWITCHD_START( [add-br br1 -- \ set bridge br1 datapath-type=dummy \ other-config:hwaddr=aa:55:aa:56:00:00 -- \ add-port br1 p1 -- set Interface p1 type=patch \ options:peer=p0 -- \ add-port br0 p0 -- set Interface p0 type=patch \ options:peer=p1 -- \ set Interface p0 bfd:enable=true -- \ set Interface p1 bfd:enable=true ]) ovs-appctl time/stop for i in `seq 0 40`; do ovs-appctl time/warp 100; done #Verify that BFD has been enabled on both interfaces. BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) AT_CHECK([ ovs-vsctl set interface p0 bfd:enable=false]) for i in `seq 0 40`; do ovs-appctl time/warp 100; done BFD_CHECK([p1], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) AT_CHECK([ ovs-vsctl set interface p0 bfd:enable=true]) for i in `seq 0 40`; do ovs-appctl time/warp 100; done BFD_CHECK([p1], [true], [false], [none], [up], [Control Detection Time Expired], [none], [up], [No Diagnostic]) BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [Control Detection Time Expired]) ovs-vsctl del-br br0 AT_CHECK([ovs-appctl bfd/show p0], [2],[ignore], [no such bfd object ovs-appctl: ovs-vswitchd: server returned an error ]) ovs-vsctl del-br br1 #Check that the entries are gone. AT_CHECK([ovs-appctl bfd/show p1], [2],[ignore], [no such bfd object ovs-appctl: ovs-vswitchd: server returned an error ]) OVS_VSWITCHD_STOP AT_CLEANUP AT_SETUP([bfd - Verify tunnel down detection]) #Create 3 bridges - br-bfd0, br-bfd1 and br-sw which is midway between the two. br2 is #connected to br-bfd0 and br-bfd1 through patch ports p0-2 and p1-2. Enable BFD on #interfaces in br-bfd0 and br-bfd1. When br-sw is dropping all packets, BFD should detect # that the tunnel is down, and come back up when br-sw is working fine. OVS_VSWITCHD_START( [add-br br-bfd0 -- \ set bridge br-bfd0 datapath-type=dummy \ other-config:hwaddr=aa:55:aa:56:00:00 -- \ add-br br-bfd1 -- \ set bridge br-bfd1 datapath-type=dummy \ other-config:hwaddr=aa:55:aa:57:00:00 -- \ add-br br-sw -- \ set bridge br-sw datapath-type=dummy \ other-config:hwaddr=aa:55:aa:58:00:00 -- \ add-port br-sw p1-sw -- set Interface p1-sw type=patch \ options:peer=p1 -- \ add-port br-sw p0-sw -- set Interface p0-sw type=patch \ options:peer=p0 -- \ add-port br-bfd1 p1 -- set Interface p1 type=patch \ options:peer=p1-sw bfd:enable=true -- \ add-port br-bfd0 p0 -- set Interface p0 type=patch \ options:peer=p0-sw bfd:enable=true --]) ovs-appctl time/stop #Create 2 bridges connected by patch ports and enable BFD AT_CHECK([ovs-ofctl add-flow br-sw 'priority=0,actions=NORMAL']) #Verify that BFD is enabled. for i in `seq 0 40`; do ovs-appctl time/warp 100; done BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) #Drop all packets in the br-sw bridge so that the tunnel is down. AT_CHECK([ ovs-ofctl add-flow br-sw 'priority=5,actions=drop' ]) for i in `seq 0 40`; do ovs-appctl time/warp 100; done BFD_CHECK([p1], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) BFD_CHECK([p0], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) #Delete the added flow AT_CHECK([ovs-ofctl del-flows br-sw], [0]) AT_CHECK([ovs-ofctl add-flow br-sw 'priority=0,actions=NORMAL']) #Verify that BFD is back up again. for i in `seq 0 40`; do ovs-appctl time/warp 100; done BFD_CHECK([p1], [true], [false], [none], [up], [Control Detection Time Expired], [none], [up], [Control Detection Time Expired]) BFD_CHECK([p0], [true], [false], [none], [up], [Control Detection Time Expired], [none], [up], [Control Detection Time Expired]) #Now, Verify one-side tunnel down detection #When br-sw is dropping packets from one end, BFD should detect # that the tunnel is down, and come back up when br-sw is working fine. #Bring down the br-bfd1 - br-sw link. So BFD packets will be sent from p0, # but not received by p1. p0 will receive all BFD packets from p1. AT_CHECK([ ovs-ofctl add-flow br-sw 'in_port=1,priority=5,actions=drop']) for i in `seq 0 40`; do ovs-appctl time/warp 100; done # Make sure p1 BFD state is down since it received no BFD packets. BFD_CHECK([p1], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) for i in `seq 0 40`; do ovs-appctl time/warp 100; done # p0 will be in init state once it receives "down" BFD message from p1. BFD_CHECK([p0], [false], [false], [none], [init], [Neighbor Signaled Session Down], [none], [down], [Control Detection Time Expired]) AT_CHECK([ovs-ofctl del-flows br-sw]) AT_CHECK([ovs-ofctl add-flow br-sw 'priority=0,actions=NORMAL']) #Ensure that BFD is back up again. for i in `seq 0 10`; do ovs-appctl time/warp 100; done #Bring down the br-bfd0 - br-sw link AT_CHECK([ ovs-ofctl add-flow br-sw 'in_port=2,priority=5,actions=drop']) for i in `seq 0 40`; do ovs-appctl time/warp 100; done BFD_CHECK([p0], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) for i in `seq 0 40`; do ovs-appctl time/warp 100; done BFD_CHECK([p1], [false], [false], [none], [init], [Neighbor Signaled Session Down], [none], [down], [Control Detection Time Expired]) OVS_VSWITCHD_STOP AT_CLEANUP AT_SETUP([bfd - concatenated path down]) #Create 2 bridges connected by patch ports and enable BFD OVS_VSWITCHD_START() ovs-appctl time/stop AT_CHECK([ ovs-vsctl -- add-br br1 -- \ set bridge br1 datapath-type=dummy \ other-config:hwaddr=aa:55:aa:56:00:00 ]) AT_CHECK([ ovs-vsctl -- add-port br1 p1 -- set Interface p1 type=patch \ options:peer=p0 ]) AT_CHECK([ ovs-vsctl -- add-port br0 p0 -- set Interface p0 type=patch \ options:peer=p1 ]) AT_CHECK([ ovs-vsctl -- set interface p0 bfd:enable=true ]) AT_CHECK([ ovs-vsctl -- set interface p1 bfd:enable=true ]) for i in `seq 0 40`; do ovs-appctl time/warp 100; done #Verify that BFD has been enabled on both interfaces. BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) #Set cpath_down to true on one interface, make sure the remote interface updates its values. AT_CHECK([ovs-vsctl set interface p0 bfd:cpath_down=true]) for i in `seq 0 40`; do ovs-appctl time/warp 100; done BFD_CHECK([p1], [false], [false], [none], [up], [No Diagnostic], [none], [up], [Concatenated Path Down]) OVS_VSWITCHD_STOP AT_CLEANUP AT_SETUP([bfd - Edit the Min Tx/Rx values]) #Create 2 bridges connected by patch ports and enable BFD OVS_VSWITCHD_START() ovs-appctl time/stop AT_CHECK([ ovs-vsctl -- add-br br1 -- \ set bridge br1 datapath-type=dummy ]) AT_CHECK([ ovs-vsctl -- add-port br1 p1 -- set Interface p1 type=patch \ options:peer=p0 ]) AT_CHECK([ ovs-vsctl -- add-port br0 p0 -- set Interface p0 type=patch \ options:peer=p1 ]) AT_CHECK([ ovs-vsctl -- set interface p0 bfd:enable=true ]) AT_CHECK([ ovs-vsctl -- set interface p1 bfd:enable=true ]) for i in `seq 0 30`; do ovs-appctl time/warp 100; done #Verify that BFD has been enabled on both interfaces. BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) #Edit the min Tx value. AT_CHECK([ovs-vsctl set interface p0 bfd:min_tx=200]) for i in `seq 0 20`; do ovs-appctl time/warp 100; done BFD_CHECK_TX([p0], [1000ms], [200ms], [100ms]) BFD_CHECK_TX([p1], [1000ms], [100ms], [200ms]) #Edit the min Rx value. AT_CHECK([ovs-vsctl set interface p1 bfd:min_rx=300]) for i in `seq 0 20`; do ovs-appctl time/warp 100; done BFD_CHECK_RX([p1], [300ms], [300ms], [1000ms]) BFD_CHECK_RX([p0], [1000ms], [1000ms], [300ms]) OVS_VSWITCHD_STOP AT_CLEANUP AT_SETUP([bfd - check_tnl_key]) OVS_VSWITCHD_START([add-port br0 p1 -- set Interface p1 type=gre \ options:remote_ip=2.2.2.2 options:key=1 ofport_request=1 -- \ set interface p1 bfd:enable=true -- \ set bridge br0 fail-mode=standalone]) # by default check_tnl_key is false. so we should process a bfd packet with tun_id=1. AT_CHECK([ovs-appctl ofproto/trace ovs-dummy 'tunnel(tun_id=0x1,src=2.2.2.2,dst=2.2.2.1,tos=0x0,ttl=64,flags(key)),in_port(1),skb_mark(0/0),eth(src=00:11:22:33:44:55,dst=00:23:20:00:00:01),eth_type(0x0800),ipv4(src=169.254.1.0/0.0.0.0,dst=169.254.1.1/0.0.0.0,proto=17/0xff,tos=0/0,ttl=255/0,frag=no/0xff),udp(src=49152/0,dst=3784/0xffff)' -generate], [0], [stdout]) # check that the packet should be handled as BFD packet. AT_CHECK([tail -2 stdout], [0], [dnl This flow is handled by the userspace slow path because it: - Consists of BFD packets. ], []) # turn on the check_tnl_key. AT_CHECK([ovs-vsctl set interface p1 bfd:check_tnl_key=true]) AT_CHECK([ovs-appctl ofproto/trace ovs-dummy 'tunnel(tun_id=0x1,src=2.2.2.2,dst=2.2.2.1,tos=0x0,ttl=64,flags(key)),in_port(1),skb_mark(0/0),eth(src=00:11:22:33:44:55,dst=00:23:20:00:00:01),eth_type(0x0800),ipv4(src=169.254.1.0/0.0.0.0,dst=169.254.1.1/0.0.0.0,proto=17/0xff,tos=0/0,ttl=255/0,frag=no/0xff),udp(src=49152/0,dst=3784/0xffff)' -generate], [0], [stdout]) # check that the packet should be handled as normal packet. AT_CHECK([tail -1 stdout], [0],[dnl Datapath actions: 100 ], []) # set the tunnel key to 0. AT_CHECK([ovs-vsctl set interface p1 options:key=0]) AT_CHECK([ovs-appctl ofproto/trace ovs-dummy 'tunnel(tun_id=0x0,src=2.2.2.2,dst=2.2.2.1,tos=0x0,ttl=64,flags(key)),in_port(1),skb_mark(0/0),eth(src=00:11:22:33:44:55,dst=00:23:20:00:00:01),eth_type(0x0800),ipv4(src=169.254.1.0/0.0.0.0,dst=169.254.1.1/0.0.0.0,proto=17/0xff,tos=0/0,ttl=255/0,frag=no/0xff),udp(src=49152/0,dst=3784/0xffff)' -generate], [0], [stdout]) # check that the packet should be handled as BFD packet. AT_CHECK([tail -2 stdout], [0], [dnl This flow is handled by the userspace slow path because it: - Consists of BFD packets. ], []) OVS_VSWITCHD_STOP AT_CLEANUP # Tests below are for bfd decay features. AT_SETUP([bfd - bfd decay]) OVS_VSWITCHD_START([add-br br1 -- set bridge br1 datapath-type=dummy -- \ add-port br1 p1 -- set Interface p1 type=patch \ options:peer=p0 ofport_request=2 -- \ add-port br0 p0 -- set Interface p0 type=patch \ options:peer=p1 ofport_request=1 -- \ set Interface p0 bfd:enable=true bfd:min_tx=300 bfd:min_rx=300 -- \ set Interface p1 bfd:enable=true bfd:min_tx=500 bfd:min_rx=500]) ovs-appctl time/stop # wait for a while to stablize everything. for i in `seq 0 9`; do ovs-appctl time/warp 500; done BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [500ms], [300ms], [500ms]) # Test-1 BFD decay: decay to decay_min_rx AT_CHECK([ovs-vsctl set interface p0 bfd:decay_min_rx=3000]) # set the bfd:decay_min_rx of p0 to 3000ms. BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [500ms], [300ms], [500ms]) # bfd:decay_min_rx is set to 3000ms after the local state of p0 goes up, # so for the first 2500ms, there should be no change. for i in `seq 0 4`; do ovs-appctl time/warp 500; done BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [500ms], [300ms], [500ms]) # advance the clock by 2000ms. for i in `seq 0 3`; do ovs-appctl time/warp 500; done # now, min_rx should decay to 3000ms. BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [3000ms], [3000ms], [500ms]) # the rx_min of p0 is 3000ms now, and p1 will send next control message # 3000ms after decay. so, advance clock by 5000ms to make that happen. for i in `seq 0 9`; do ovs-appctl time/warp 500; done BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [3000ms], [3000ms], [500ms]) # End of Test-1 ############################################################### # Test-2 BFD decay: go back to cfg_min_rx when there is traffic # receive packet at 1/100ms rate for 5000ms. for i in `seq 0 49` do ovs-appctl time/warp 100 AT_CHECK([ovs-ofctl packet-out br1 3 2 "90e2ba01475000101856b2e80806000108000604000100101856b2e80202020300000000000002020202"], [0], [stdout], []) done # after a decay interval (3000ms), the p0 min_rx will go back to # cfg_min_rx. BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [500ms], [300ms], [500ms]) # End of Test-2 ############################################################### # Test-3 BFD decay: go back to cfg_min_rx when decay_min_rx is changed # advance the clock by 5000m. p0 shoud decay. for i in `seq 0 9`; do ovs-appctl time/warp 500; done BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [3000ms], [3000ms], [500ms]) # advance the clock, to make 'flag' go back to none. for i in `seq 0 5`; do ovs-appctl time/warp 500; done BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) # change decay_min_rx to 1000ms. # for decay_min_rx < 2000ms, the decay detection time is set to 2000ms. # this should reset the min_rx. AT_CHECK([ovs-vsctl set Interface p0 bfd:decay_min_rx=1000]) BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [500ms], [300ms], [500ms]) # for the following 1500ms, there should be no decay, # since the decay_detect_time is set to 2000ms. for i in `seq 0 2` do ovs-appctl time/warp 500 BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [500ms], [300ms], [500ms]) done # advance the clock by 2000ms, decay should have happened. for i in `seq 0 3`; do ovs-appctl time/warp 500; done BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [1000ms], [1000ms], [500ms]) # advance the clock, so 'flag' go back to none. for i in `seq 0 9`; do ovs-appctl time/warp 500; done # End of Test-3 ############################################################### # Test-4 BFD decay: set min_rx to 800ms. # this should firstly reset the min_rx and then re-decay to 1000ms. AT_CHECK([ovs-vsctl set Interface p0 bfd:min_rx=800]) BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [800ms], [800ms], [500ms]) # for the following 1600ms, there should be no decay, # since the decay detection time is set to 2000ms. for i in `seq 0 1` do ovs-appctl time/warp 800 BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [800ms], [800ms], [500ms]) done # advance the clock by 2000ms, decay should have happened. for i in `seq 0 3`; do ovs-appctl time/warp 500; done BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [1000ms], [1000ms], [500ms]) # advance the clock, so 'flag' go back to none. for i in `seq 0 9`; do ovs-appctl time/warp 500; done # End of Test-4 ############################################################### # Test-5 BFD decay: set min_rx to 300ms and decay_min_rx to 5000ms together. AT_CHECK([ovs-vsctl set Interface p0 bfd:min_rx=300 bfd:decay_min_rx=5000]) BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [500ms], [300ms], [500ms]) # for decay_min_rx > 2000ms, the decay detection time is set to # decay_min_rx (5000ms). # for the following 4500ms, there should be no decay, # since the decay detection time is set to 5000ms. for i in `seq 0 8` do ovs-appctl time/warp 500 BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [500ms], [300ms], [500ms]) done # advance the clock by 2000ms, decay should have happened. for i in `seq 0 3`; do ovs-appctl time/warp 500; done BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [5000ms], [5000ms], [500ms]) # advance the clock, to make 'flag' go back to none. for i in `seq 0 9`; do ovs-appctl time/warp 500; done # End of Test-5 ############################################################### # Test-6 BFD decay: set decay_min_rx to 0 to disable bfd decay. AT_CHECK([ovs-vsctl set Interface p0 bfd:decay_min_rx=0]) # min_rx is reset. BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [500ms], [300ms], [500ms]) for i in `seq 0 20` do ovs-appctl time/warp 500 BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [500ms], [300ms], [500ms]) done # End of Test-6 ################################################################ # Test-7 BFD decay: rmt_min_tx is greater than decay_min_rx AT_CHECK([ovs-vsctl set Interface p0 bfd:decay_min_rx=3000 -- set interface p1 bfd:min_tx=5000]) # there will be poll sequences from both sides. and it is hard to determine the # order. so just skip 10000ms and check the RX/TX. at that time, p0 should be in decay already. for i in `seq 0 19`; do ovs-appctl time/warp 500; done BFD_CHECK_TX([p0], [500ms], [300ms], [5000ms]) BFD_CHECK_RX([p0], [5000ms], [3000ms], [500ms]) # then, there should be no change of status, for i in `seq 0 9` do ovs-appctl time/warp 500 BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK_TX([p0], [500ms], [300ms], [5000ms]) BFD_CHECK_RX([p0], [5000ms], [3000ms], [500ms]) done # reset the p1's min_tx to 500ms. AT_CHECK([ovs-vsctl set Interface p1 bfd:min_tx=500]) # since p0 has been in decay, now the RX will show 3000ms. BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [3000ms], [3000ms], [500ms]) # End of Test-7 ############################################################### # Test-8 BFD decay: state up->down->up. # turn bfd off on p1 AT_CHECK([ovs-vsctl set Interface p1 bfd:enable=false]) # check the state change of bfd on p0. After 15000 ms (> 3 min_rx intervals) for i in `seq 0 14`; do ovs-appctl time/warp 1000; done BFD_CHECK([p0], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) BFD_CHECK_TX([p0], [1000ms], [1000ms], [0ms]) BFD_CHECK_RX([p0], [300ms], [300ms], [1ms]) # resume the bfd on p1. the bfd should not go to decay mode direclty. AT_CHECK([ovs-vsctl set Interface p1 bfd:enable=true]) for i in `seq 0 3`; do ovs-appctl time/warp 500; done BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [500ms], [300ms], [500ms]) # since the decay_min_rx is still 3000ms, so after 5000ms, p0 should have decayed. for i in `seq 0 9`; do ovs-appctl time/warp 500; done BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [3000ms], [3000ms], [500ms]) # End of Test-8 ################################################################ OVS_VSWITCHD_STOP AT_CLEANUP # Tests below are for bfd forwarding_if_rx feature. # forwarding_if_rx Test1: bfd is enabled on one end of link. AT_SETUP([bfd - bfd forwarding_if_rx 1]) OVS_VSWITCHD_START([add-br br1 -- set bridge br1 datapath-type=dummy -- \ add-port br1 p1 -- set Interface p1 type=patch \ options:peer=p0 ofport_request=2 -- \ add-port br0 p0 -- set Interface p0 type=patch \ options:peer=p1 ofport_request=1 -- \ set Interface p0 bfd:enable=true bfd:min_tx=500 bfd:min_rx=500 -- \ add-port br1 p2 -- set Interface p2 type=internal ofport_request=3]) ovs-appctl time/stop # check the inital status. BFD_CHECK([p0], [false], [false], [none], [down], [No Diagnostic], [none], [down], [No Diagnostic]) BFD_CHECK_TX([p0], [1000ms], [1000ms], [0ms]) BFD_CHECK_RX([p0], [500ms], [500ms], [1ms]) # enable forwarding_if_rx. AT_CHECK([ovs-vsctl set Interface p0 bfd:forwarding_if_rx=true], [0]) # there should be no change of forwarding flag, since # there is no traffic. for i in `seq 0 3` do ovs-appctl time/warp 500 BFD_CHECK([p0], [false], [false], [none], [down], [No Diagnostic], [none], [down], [No Diagnostic]) done # receive one packet. AT_CHECK([ovs-ofctl packet-out br1 3 2 "90e2ba01475000101856b2e80806000108000604000100101856b2e80202020300000000000002020202"], [0], [stdout], []) # wait for 1000ms for i in `seq 0 14`; do ovs-appctl time/warp 100; done # the forwarding flag should turn to true sometime in this 1000ms, since there is data received. BFD_CHECK([p0], [true], [false], [none], [down], [No Diagnostic], [none], [down], [No Diagnostic]) BFD_CHECK_TX([p0], [1000ms], [1000ms], [0ms]) BFD_CHECK_RX([p0], [500ms], [500ms], [1ms]) # Stop sending packets for 2000ms. for i in `seq 0 19`; do ovs-appctl time/warp 100; done BFD_CHECK([p0], [false], [false], [none], [down], [No Diagnostic], [none], [down], [No Diagnostic]) BFD_CHECK_TX([p0], [1000ms], [1000ms], [0ms]) BFD_CHECK_RX([p0], [500ms], [500ms], [1ms]) # receive packet at 1/100ms rate for 2000ms. for i in `seq 0 19` do ovs-appctl time/warp 100 AT_CHECK([ovs-ofctl packet-out br1 3 2 "90e2ba01475000101856b2e80806000108000604000100101856b2e80202020300000000000002020202"], [0], [stdout], []) done # the forwarding flag should be true, since there is data received. BFD_CHECK([p0], [true], [false], [none], [down], [No Diagnostic], [none], [down], [No Diagnostic]) BFD_CHECK_TX([p0], [1000ms], [1000ms], [0ms]) BFD_CHECK_RX([p0], [500ms], [500ms], [1ms]) # reset bfd forwarding_if_rx. AT_CHECK([ovs-vsctl set Interface p0 bfd:forwarding_if_rx=false], [0]) # forwarding flag should turn to false since the STATE is DOWN. BFD_CHECK([p0], [false], [false], [none], [down], [No Diagnostic], [none], [down], [No Diagnostic]) BFD_CHECK_TX([p0], [1000ms], [1000ms], [0ms]) BFD_CHECK_RX([p0], [500ms], [500ms], [1ms]) AT_CHECK([ovs-vsctl del-br br1], [0], [ignore]) AT_CLEANUP # forwarding_if_rx Test2: bfd is enabled on both ends of link. AT_SETUP([bfd - bfd forwarding_if_rx 2]) OVS_VSWITCHD_START([add-br br1 -- set bridge br1 datapath-type=dummy -- \ add-port br1 p1 -- set Interface p1 type=patch \ options:peer=p0 ofport_request=2 -- \ add-port br0 p0 -- set Interface p0 type=patch \ options:peer=p1 ofport_request=1 -- \ set Interface p0 bfd:enable=true bfd:min_tx=500 bfd:min_rx=500 -- \ set Interface p1 bfd:enable=true bfd:min_tx=300 bfd:min_rx=300 -- \ add-port br1 p2 -- set Interface p2 type=internal ofport_request=3]) ovs-appctl time/stop # advance the clock, to stablize the states. for i in `seq 0 9`; do ovs-appctl time/warp 500; done # enable forwarding_if_rx. AT_CHECK([ovs-vsctl set Interface p0 bfd:forwarding_if_rx=true], [0]) # there should be no change of the forwarding flag, since # the bfd on both ends is already up. for i in `seq 0 5` do ovs-appctl time/warp 500 BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) done # stop the bfd on one side. AT_CHECK([ovs-vsctl set Interface p1 bfd:enable=false], [0]) # for within 1500ms, the detection timer is not out. # there is no change to status. for i in `seq 0 1` do ovs-appctl time/warp 500 BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) for i in `seq 0 4` do AT_CHECK([ovs-ofctl packet-out br1 3 2 "90e2ba01475000101856b2e80806000108000604000100101856b2e80202020300000000000002020202"], [0], [stdout], []) done done # at 1500ms, the STATE should go DOWN, due to Control Detection Time Expired. # but forwarding flag should be still true. ovs-appctl time/warp 500 BFD_CHECK([p0], [true], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) # receive packet at 1/100ms rate for 1000ms. for i in `seq 0 9` do AT_CHECK([ovs-ofctl packet-out br1 3 2 "90e2ba01475000101856b2e80806000108000604000100101856b2e80202020300000000000002020202"], [0], [stdout], []) ovs-appctl time/warp 100 # the forwarding flag should always be true during this time. BFD_CHECK([p0], [true], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) done # reset bfd forwarding_if_rx. AT_CHECK([ovs-vsctl set Interface p0 bfd:forwarding_if_rx=false], [0]) # forwarding flag should turn to false since the STATE is DOWN. BFD_CHECK([p0], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) BFD_CHECK_TX([p0], [1000ms], [1000ms], [0ms]) BFD_CHECK_RX([p0], [500ms], [500ms], [1ms]) # re-enable bfd on the other end. the states should be up. AT_CHECK([ovs-vsctl set Interface p1 bfd:enable=true bfd:min_tx=300 bfd:min_rx=300]) # advance the clock, to stablize the states. for i in `seq 0 9`; do ovs-appctl time/warp 500; done BFD_CHECK([p0], [true], [false], [none], [up], [Control Detection Time Expired], [none], [up], [No Diagnostic]) BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [Control Detection Time Expired]) BFD_CHECK_TX([p0], [500ms], [500ms], [300ms]) BFD_CHECK_RX([p0], [500ms], [500ms], [300ms]) AT_CHECK([ovs-vsctl del-br br1], [0], [ignore]) AT_CLEANUP # forwarding_if_rx Test3: bfd is enabled on both ends of link and decay is enabled. AT_SETUP([bfd - bfd forwarding_if_rx 3]) OVS_VSWITCHD_START([add-br br1 -- set bridge br1 datapath-type=dummy -- \ add-port br1 p1 -- set Interface p1 type=patch \ options:peer=p0 ofport_request=2 -- \ add-port br0 p0 -- set Interface p0 type=patch \ options:peer=p1 ofport_request=1 -- \ set Interface p0 bfd:enable=true bfd:min_tx=300 bfd:min_rx=300 bfd:decay_min_rx=3000 -- \ set Interface p1 bfd:enable=true bfd:min_tx=500 bfd:min_rx=500]) ovs-appctl time/stop # advance the clock, to stablize the states. for i in `seq 0 19`; do ovs-appctl time/warp 500; done BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [3000ms], [3000ms], [500ms]) # enable forwarding_if_rx. AT_CHECK([ovs-vsctl set Interface p0 bfd:forwarding_if_rx=true], [0]) # there should be no change of the forwarding flag, since # the bfd on both ends is already up. for i in `seq 0 9` do ovs-appctl time/warp 500 BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up], [No Diagnostic]) done # reconfigure the decay_min_rx to 1000ms. AT_CHECK([ovs-vsctl set interface p0 bfd:decay_min_rx=1000]) BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [500ms], [300ms], [500ms]) # wait for 5000ms to decay. for i in `seq 0 9`; do ovs-appctl time/warp 500; done BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [1000ms], [1000ms], [500ms]) # stop the bfd on one side. AT_CHECK([ovs-vsctl set Interface p1 bfd:enable=false], [0]) # advance clock by 4000ms, while receiving packets. # the STATE should go DOWN, due to Control Detection Time Expired. # but forwarding flag should be still true. for i in `seq 0 7` do ovs-appctl time/warp 500 AT_CHECK([ovs-ofctl packet-out br1 3 2 "90e2ba01475000101856b2e80806000108000604000100101856b2e80202020300000000000002020202"], [0], [stdout], []) done BFD_CHECK([p0], [true], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) # receive packet at 1/100ms rate for 1000ms. for i in `seq 0 9` do AT_CHECK([ovs-ofctl packet-out br1 3 2 "90e2ba01475000101856b2e80806000108000604000100101856b2e80202020300000000000002020202"], [0], [stdout], []) ovs-appctl time/warp 100 # the forwarding flag should always be true during this time. BFD_CHECK([p0], [true], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) done # stop receiving for 3000ms. for i in `seq 0 29`; do ovs-appctl time/warp 100; done BFD_CHECK([p0], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) # reset bfd forwarding_if_rx. AT_CHECK([ovs-vsctl set Interface p0 bfd:forwarding_if_rx=false]) # forwarding flag should turn to false since the STATE is DOWN. BFD_CHECK([p0], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) BFD_CHECK_TX([p0], [1000ms], [1000ms], [0ms]) BFD_CHECK_RX([p0], [300ms], [300ms], [1ms]) # re-enable bfd forwarding_if_rx. AT_CHECK([ovs-vsctl set Interface p0 bfd:forwarding_if_rx=true]) # there should be no change. BFD_CHECK([p0], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) BFD_CHECK_TX([p0], [1000ms], [1000ms], [0ms]) BFD_CHECK_RX([p0], [300ms], [300ms], [1ms]) # re-enable bfd on the other end. the states should be up. AT_CHECK([ovs-vsctl set Interface p1 bfd:enable=true bfd:min_tx=300 bfd:min_rx=300]) # advance the clock, to stablize the states. for i in `seq 0 19`; do ovs-appctl time/warp 500; done BFD_CHECK([p0], [true], [false], [none], [up], [Control Detection Time Expired], [none], [up], [No Diagnostic]) BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up], [Control Detection Time Expired]) BFD_CHECK_TX([p0], [300ms], [300ms], [300ms]) BFD_CHECK_RX([p0], [1000ms], [1000ms], [300ms]) AT_CHECK([ovs-vsctl del-br br1], [0], [ignore]) AT_CLEANUP