[PATCH 1/3] vif-plug-representor: Log reason for failure during udev initialization.
In the case of failure during udev initialization, the reason is currently not logged. This makes it difficult to triage any issues.
The udev functions returning pointers will populate errno on failure and the udev functions with an int return will pass on the errno value as a negative integer.
[PATCH 2/3] vif-plug-representor: Lower severity of set udev recv buf size failure.
Setting the udev receive buffer size is a privileged operation, and the ovn-controller may not always be allowed to set it.
Before this patch this message would be logged when running unit tests as a non-root user and/or when the ovn-controller is ran in an unprivilieged container.
The OVS/OVN unit tests often check and fail on any unexpected WARN, ERR or EMER level messages.
[PATCH ovn branch-23.03] controller: Set check_tnl_key for BFD on tunnel ifaces.
The OVS BFD configuration option `check_tnl_key` controls whether OVS should consider the tunnel key before processing BFD control messages. The OVN pipeline design ensures traffic originating from a logical port will have a non-zero tunnel key.
Always set `check_tnl_key` to "true" to avoid processing of BFD control messages originating from a logical port.
