Hello,
I have 2 ports connected in a bridge, and traffic is going, offloaded
(full).
Doing that, I remove one port "ovs-vsctl del-port pf".
Adding it back, traffic resumes, but OVS does not create the correct
flows, as the rules were not deleted properly with del-port.
The issue is that:
In lib/dpif.c, in dpif_port_del, there is a call to
dpif->dpif_class->port_del() and then netdev_ports_remove().
port_del function in this case is dpif_netdev_port_del (in
lib/dpif-netdev.c) that calls do_del_port(). That does invoke removing
the flows, but those are just requests to be handled by
dp_netdev_flow_offload_main().
When dp_netdev_flow_offload_main() tries to handle the requests, in
mark_to_flow_disassociate, the call to netdev_ports_get() (line 2295)
fails, so netdev_flow_del() is not called.
I tried to add a delay as below, and it resolves the issue. However, it
looks bad to me.
Suggestions?
Thanks,
Eli
diff --git a/lib/dpif-netdev.c b/lib/dpif-netdev.c
index d393aab5e..d5b3d32d0 100644
--- a/lib/dpif-netdev.c
+++ b/lib/dpif-netdev.c
@@ -1942,6 +1942,7 @@ dpif_netdev_port_del(struct dpif *dpif, odp_port_t
port_no)
}
}
ovs_mutex_unlock(&dp->port_mutex);
+ sleep(1);
return error;
}
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