I'm trying to delete a "dpdk" type port and add it again.
I start vswitchd with DPDK argumentsand create a bridge with datapath_type
"netdev" .
. /vswitchd/ovs-vswitchd --dpdk -c 0x2 -n 4 --socket-mem 4096,0
-- unix:/usr/local/var/run/openvswitch/db.sock --pidfile --log-file -detach
. /utilities/ovs-vsctl add-br br0 -- set bridge br0
datapath_type=netdev
Then I add a "dpdk" type port, delete it and re-add it.
. /utilities/ovs-vsctl add-port br0 dpdk0 -- set Interface
dpdk0 type=dpdk
. /utilities/ovs-vsctl del-port br0 dpdk0
. /utilities/ovs-vsctl add-port br0 dpdk0 -- set Interface
dpdk0 type=dpdk
After I add the "dpdk" type port for the second time, I get the following error
message:
ovs-vsctl: Error detected while setting up 'dpdk0'. See
ovs-vswitchd log for details.
These are the relevant details in the ovs-vswitchd log:
2014-11-04T18:01:05.917Z|00074|dpdk|ERR|eth dev config error -16
2014-11-04T18:01:05.917Z|00075|bridge|WARN|could not open network device dpdk0
(Device or resource busy)
The "netdev_dpdk_destruct" function in "netdev-dpdk.c" isn't being called and
the DPDK device isn't being freed when the port is deleted.
This isn't limited to DPDK ports, it happens for all ports on a userspace
bridge.
In the "netdev_unref" function in netdev.c, the "destruct" and "dealloc"
functions aren't being hit.
This is possibly caused by "dev->ref_cnt" being incremented too much, or not
decremented enough.
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