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 ]) ]) m4_define([BFD_VSCTL_LIST_IFACE], [ AT_CHECK([ovs-vsctl list interface $1 | sed -n $2],[0], [dnl $3 ]) ]) 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 ofport_request=2 -- \ add-port br-sw p0-sw -- set Interface p0-sw type=patch \ options:peer=p0 ofport_request=1 -- \ 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 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], [500ms], [300ms], [500ms]) # Test-1 BFD decay: decay to decay_min_rx AT_CHECK([ovs-vsctl set interface p0 bfd:decay_min_rx=3000]) # bfd:decay_min_rx is set to 3000ms after the local state of p0 goes up, # so for the first 2000ms, there should be no change. 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]) # advance the clock by 5000ms. for i in `seq 0 9`; 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]) # advance clock by 5000ms and check the the flags are all 'none'. 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 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 # min_rx. BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [500ms], [300ms], [500ms]) # End of Test-2 ############################################################### # Test-3 BFD decay: set decay_min_rx to 1000ms. # this should firstly reset the min_rx and then re-decay to 1000ms. AT_CHECK([ovs-vsctl set Interface p0 bfd:decay_min_rx=1000]) # advance the clock by 10000ms, decay should have happened. 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], [1000ms], [1000ms], [500ms]) # End of Test-3 ############################################################### # Test-4 BFD decay: set decay_min_rx to 0 to disable bfd decay. AT_CHECK([ovs-vsctl set Interface p0 bfd:decay_min_rx=0]) # advance the clock by 5000ms. for i in `seq 0 9`; do ovs-appctl time/warp 500; done # 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-4 ################################################################ # Test-5 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]) # advance the clock by 10000ms to stable everything. 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]) # p0 rx should show 5000ms even if it is in decay. 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 19` 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]) # advance the clock by 20000ms to stable everything. # since p0 has been in decay, now the RX will show 3000ms. for i in `seq 0 39`; do ovs-appctl time/warp 500; done BFD_CHECK_TX([p0], [500ms], [300ms], [500ms]) BFD_CHECK_RX([p0], [3000ms], [3000ms], [500ms]) # End of Test-5 ############################################################### # Test-6 BFD decay: state up->down->up. # turn bfd off on p1 AT_CHECK([ovs-vsctl set Interface p1 bfd:enable=false]) # advance the clock by 15000ms to stable everything. 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-6 ################################################################ OVS_VSWITCHD_STOP AT_CLEANUP # Tests below are for bfd forwarding_if_rx feature. # forwarding_if_rx Test1 # Test1 tests the case when bfd is only enabled on one end of the link. # Under this situation, the bfd state should be DOWN and the forwarding # flag should be FALSE by default. However, if forwarding_if_rx is # enabled, as long as there is packet received, the bfd forwarding flag # should be TRUE. AT_SETUP([bfd - bfd forwarding_if_rx - bfd on one side]) 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 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]) # 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 # Test2 is for testing that the enable of forwarding_if_rx will not # affect the normal bfd communication. bfd is enabled on both ends of # the link. AT_SETUP([bfd - bfd forwarding_if_rx - bfd on both sides]) 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]) # 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]) # 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 # Test3 is for testing that the enable of forwarding_if_rx will not # affect the bfd decay feature. bfd is enabled on both ends of the link. AT_SETUP([bfd - bfd forwarding_if_rx - with 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 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]) # wait for 5000ms to decay. 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_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 5000ms. for i in `seq 0 49`; 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]) BFD_CHECK([p0], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) # re-enable bfd forwarding_if_rx. AT_CHECK([ovs-vsctl set Interface p0 bfd:forwarding_if_rx=true]) BFD_CHECK([p0], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) # 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 # test bfd:flap_count. # This test contains three part: # part 1. tests the flap_count on normal bfd monitored link. # part 2. tests the flap_count when forwarding override is used. # part 3. tests the flap_count when forwarding_if_rx is enabled. AT_SETUP([bfd - flap_count]) #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 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=100 bfd:min_rx=100 -- \ set Interface p1 bfd:enable=true bfd:min_tx=100 bfd:min_rx=100]) ovs-appctl time/stop # Part-1 wait for a while to stablize bfd. for i in `seq 0 100`; do ovs-appctl time/warp 100; 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], [100ms], [100ms], [100ms]) BFD_CHECK_RX([p0], [100ms], [100ms], [100ms]) # both p0 and p1 should have flap_count = "1". since down->up. BFD_VSCTL_LIST_IFACE([p0], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["1"]) BFD_VSCTL_LIST_IFACE([p1], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["1"]) # turn bfd on p1 off, should increment the bfd:flap_count on p0. AT_CHECK([ovs-vsctl set interface p1 bfd:enable=false]) for i in `seq 0 49`; do ovs-appctl time/warp 100; done BFD_CHECK([p0], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) BFD_VSCTL_LIST_IFACE([p0], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["2"]) AT_CHECK([ovs-vsctl list interface p1 | sed -n "s/^.*flap_count=\(.*\), forwarding.*$/\1/p"]) # turn bfd on p1 on again, should increment the bfd:flap_count on p0. # p1 should still have flap_count = "1", since it is reset. AT_CHECK([ovs-vsctl set interface p1 bfd:enable=true]) for i in `seq 0 49`; do ovs-appctl time/warp 100; done BFD_VSCTL_LIST_IFACE([p0], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["3"]) BFD_VSCTL_LIST_IFACE([p1], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["1"]) # Part-2 now turn on the forwarding_override. AT_CHECK([ovs-appctl bfd/set-forwarding p0 true], [0], [dnl OK ]) # turn bfd on p1 off, should not increment the bfd:flap_count on p0, since forwarding_override is on. AT_CHECK([ovs-vsctl set interface p1 bfd:enable=false]) for i in `seq 0 49`; do ovs-appctl time/warp 100; done BFD_CHECK([p0], [true], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) BFD_VSCTL_LIST_IFACE([p0], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["3"]) AT_CHECK([ovs-vsctl list interface p1 | sed -n "s/^.*flap_count=\(.*\), forwarding.*$/\1/p"]) # turn bfd on p1 on again, should not increment the bfd:flap_count on p0, since forwarding override is on. # p1 should still have flap_count = "1", since it is reset. AT_CHECK([ovs-vsctl set interface p1 bfd:enable=true]) for i in `seq 0 49`; do ovs-appctl time/warp 100; done BFD_VSCTL_LIST_IFACE([p0], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["3"]) BFD_VSCTL_LIST_IFACE([p1], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["1"]) # turn the forwarding_override back to normal. AT_CHECK([ovs-appctl bfd/set-forwarding p0 normal], [0], [dnl OK ]) # turn bfd on p1 off and on, should increment the bfd:flap_count on p0. AT_CHECK([ovs-vsctl set interface p1 bfd:enable=false]) for i in `seq 0 49`; do ovs-appctl time/warp 100; done AT_CHECK([ovs-vsctl set interface p1 bfd:enable=true]) for i in `seq 0 49`; do ovs-appctl time/warp 100; done BFD_VSCTL_LIST_IFACE([p0], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["5"]) BFD_VSCTL_LIST_IFACE([p1], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["1"]) # Part-3 now turn on forwarding_if_rx. AT_CHECK([ovs-vsctl set Interface p0 bfd:forwarding_if_rx=true], [0]) # disable the bfd on p1. 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 true. for i in `seq 0 39` do ovs-appctl time/warp 100 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]) # flap_count should remain unchanged. BFD_VSCTL_LIST_IFACE([p0], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["5"]) # stop the traffic for 4000ms, the forwarding flag of p0 should turn false. # and there should be the increment of flap_count. for i in `seq 0 7`; do ovs-appctl time/warp 500; done BFD_CHECK([p0], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) BFD_VSCTL_LIST_IFACE([p0], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["6"]) # advance clock by 4000ms, and resume the traffic. for i in `seq 0 39` do ovs-appctl time/warp 100 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]) # flap_count should be incremented again. BFD_VSCTL_LIST_IFACE([p0], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["7"]) # stop the traffic for 4000ms, the forwarding flag of p0 should turn false. # and there should be the increment of flap_count. for i in `seq 0 7`; do ovs-appctl time/warp 500; done BFD_CHECK([p0], [false], [false], [none], [down], [Control Detection Time Expired], [none], [down], [No Diagnostic]) BFD_VSCTL_LIST_IFACE([p0], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["8"]) # turn on the bfd on p1. AT_CHECK([ovs-vsctl set interface p1 bfd:enable=true]) for i in `seq 0 49`; do ovs-appctl time/warp 100; done # even though there is no data traffic, since p1 bfd is on again, should increment the flap_count. BFD_VSCTL_LIST_IFACE([p0], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["9"]) BFD_VSCTL_LIST_IFACE([p1], ["s/^.*flap_count=\(.*\), forwarding.*$/\1/p"], ["1"]) OVS_VSWITCHD_STOP AT_CLEANUP