diff options
| author | Ben Pfaff <blp@ovn.org> | 2020-03-19 17:53:10 -0700 |
|---|---|---|
| committer | Ben Pfaff <blp@ovn.org> | 2020-03-20 08:27:17 -0700 |
| commit | 323ae1e808e6ac503f5c7ddd50a79d908fdd0e41 (patch) | |
| tree | 4cf260bceab384cb210c454330b2731cfd3784e7 /tests | |
| parent | 9a8a18f9fa27f72cfdb9da75f10bffc9ab621e33 (diff) | |
| download | openvswitch-323ae1e808e6ac503f5c7ddd50a79d908fdd0e41.tar.gz | |
ofproto-dpif-xlate: Fix recirculation when in_port is OFPP_CONTROLLER.
Recirculation usually requires finding the pre-recirculation input port.
Packets sent by the controller, with in_port of OFPP_CONTROLLER or
OFPP_NONE, do not have a real input port data structure, only a port
number. The code in xlate_lookup_ofproto_() mishandled this case,
failing to return the ofproto data structure. This commit fixes the
problem and adds a test to guard against regression.
Reported-by: Numan Siddique <numans@ovn.org>
Reported-at: https://mail.openvswitch.org/pipermail/ovs-dev/2020-March/368642.html
Tested-by: Numan Siddique <numans@ovn.org>
Acked-by: Numan Siddique <numans@ovn.org>
Signed-off-by: Ben Pfaff <blp@ovn.org>
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/ofproto-dpif.at | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tests/ofproto-dpif.at b/tests/ofproto-dpif.at index ff1cc9370..d444cf084 100644 --- a/tests/ofproto-dpif.at +++ b/tests/ofproto-dpif.at @@ -5171,6 +5171,36 @@ AT_CHECK_UNQUOTED([tail -1 stdout], [0], [Datapath actions: 2 OVS_VSWITCHD_STOP AT_CLEANUP +# Checks for regression against a bug in which OVS dropped packets +# with in_port=CONTROLLER when they were recirculated (because +# CONTROLLER isn't a real port and could not be looked up). +AT_SETUP([ofproto-dpif - packet-out recirculation]) +OVS_VSWITCHD_START +add_of_ports br0 1 2 + +AT_DATA([flows.txt], [dnl +table=0 ip actions=mod_dl_dst:83:83:83:83:83:83,ct(table=1) +table=1 ip actions=ct(commit),output:2 +]) +AT_CHECK([ovs-ofctl add-flows br0 flows.txt]) + +packet=ffffffffffff00102030405008004500001c00000000401100000a000002ffffffff0035111100080000 +AT_CHECK([ovs-ofctl packet-out br0 "in_port=controller packet=$packet actions=table"]) + +# Dumps out the flow table, extracts the number of packets that have gone +# through the (single) flow in table 1, and returns success if it's exactly 1. +# +# If this remains 0, then the recirculation isn't working properly since the +# packet never goes through flow in table 1. +check_flows () { + n=$(ovs-ofctl dump-flows br0 table=1 | sed -n 's/.*n_packets=\([[0-9]]\{1,\}\).*/\1/p') + echo "n_packets=$n" + test "$n" = 1 +} +OVS_WAIT_UNTIL([check_flows], [ovs dump-flows br0]) + +OVS_VSWITCHD_STOP +AT_CLEANUP AT_SETUP([ofproto-dpif - debug_slow action]) OVS_VSWITCHD_START |