[Bug 66] Secondary process must have exact same whitelist "-w" list

[bugzilla@dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=66

            Bug ID: 66
           Summary: Secondary process must have exact same whitelist "-w"
                    list
           Product: DPDK
           Version: 18.05
          Hardware: x86
                OS: Linux
            Status: CONFIRMED
          Severity: minor
          Priority: Normal
         Component: ethdev
          Assignee: dev@dpdk.org
          Reporter: tom.barbette@uliege.be
  Target Milestone: ---

When a primary process is launched with some whitelisted PCIe devices, the
secondary process will not detect NICs if the exact same whitelisting
parameters are not given.

Eg, if I pass :
sudo ./testpmd -w 01:00.0 -w 01:00.1 --proc-type primary --  

Then if I just run sudo ./testpmd --proc-type secondary --  

I will have :

EAL: PCI device 0000:01:00.0 on NUMA socket 0
EAL:   probe driver: 8086:10fb net_ixgbe
EAL: secondary process attach failed, ethdev doesn't existEAL: Requested device
0000:01:00.0 cannot be used
EAL: PCI device 0000:01:00.1 on NUMA socket 0
EAL:   probe driver: 8086:10fb net_ixgbe
EAL: secondary process attach failed, ethdev doesn't existEAL: Requested device
0000:01:00.1 cannot be used
EAL: PCI device 0000:03:00.0 on NUMA socket 0
EAL:   probe driver: 8086:10fb net_ixgbe
...

I would personally expect the secondaries to be able to open only the
whitelisted in the secondary, or maybe all devices.

If I launch the secondary with the same -w, the secondary will be able to
access the devices as expected :
sudo ./testpmd -w 01:00.0 -w 01:00.1 --proc-type secondary --  

EAL: PCI device 0000:01:00.0 on NUMA socket 0
EAL:   probe driver: 8086:10fb net_ixgbe
EAL: PCI device 0000:01:00.1 on NUMA socket 0
EAL:   probe driver: 8086:10fb net_ixgbe

Thanks,
Tom

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