In normal ovs-ofctl commands (e.g. add-flow), ovs-ofctl connects to ovs-vswitchd process on “<ovs_rundir()>/<bridge_name>.mgmt” unix socket. In an output that contains a port or table, port name or table name can be displayed, instead of their numbers, if the user turns on this feature. (by -—names option) Also, this feature is enabled when interacting with a user on console. To fetch the names, ovs-ofctl sends TABLE FEATURE / PORT DESCRIPTION request message to ovs-vswitchd process and expects a reply on the connection. When ovs-ofctl runs the snoop command, it connects to “<ovs_rundir()>/<bridge_name>.snoop” unix socket. ovs-vswitchd process would not reply to the TABLE FEATURE / PORT DESCRIPTION request message on this connection. It would only send any open flow message it receives from the controller. When using port/table name feature with snoop command, the print of open flow message would call ‘tables_to_show()’/‘ports_to_show()’ which in turn would send the request message on the snoop connection. ovs-vswitchd would not reply back on this connection, but instead would keep sending the open flow messages received from controller. ‘table_iterator_next()/port_iterator_next()’ function would loop for ever waiting for response. The fix for this is to turn off display of table/port names when running snoop command.
Signed-off-by: Ashish Varma <ashishvarma....@gmail.com> --- v1-v2 Added more description to the cause of the issue and reason to add the fix. --- utilities/ovs-ofctl.c | 1 + 1 file changed, 1 insertion(+) diff --git a/utilities/ovs-ofctl.c b/utilities/ovs-ofctl.c index 6708b07..3023787 100644 --- a/utilities/ovs-ofctl.c +++ b/utilities/ovs-ofctl.c @@ -2326,6 +2326,7 @@ ofctl_snoop(struct ovs_cmdl_context *ctx) { struct vconn *vconn; + use_names = 0; /* don't show port and table names */ open_vconn__(ctx->argv[1], SNOOP, &vconn); monitor_vconn(vconn, false, false); } -- 2.7.4 _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev