[dpdk-dev] DPDK Shared lib: No Ethernet ports

[Bruce Richardson]

On Fri, Sep 07, 2018 at 05:11:21PM +0000, Shubhachint, Chaitanya wrote:
> Thank you for your reply Bruce. 
> Still having issues with shared-lib DPDK. I tried both options and get two distinct issues. 
> I tried running the l2fwd example with e1000 driver and get little farther. This time it does find the devices but there is an error with MBUF
> 
> root:build$./l2fwd -d /home/sp2/dpdk-18.08/x86_64-native-linuxapp-gcc/lib/librte_pmd_e1000.so
> EAL: Detected 6 lcore(s)
> EAL: Detected 1 NUMA nodes
> EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
> EAL: No free hugepages reported in hugepages-1048576kB
> EAL: Probing VFIO support...
> EAL: PCI device 0000:00:19.0 on NUMA socket -1
> EAL:   Invalid NUMA socket, default to 0
> EAL:   probe driver: 8086:1502 net_e1000_em
> EAL: PCI device 0000:06:00.0 on NUMA socket -1
> EAL:   Invalid NUMA socket, default to 0
> EAL:   probe driver: 8086:1521 net_e1000_igb
> EAL: PCI device 0000:06:00.1 on NUMA socket -1
> EAL:   Invalid NUMA socket, default to 0
> EAL:   probe driver: 8086:1521 net_e1000_igb
> EAL: PCI device 0000:06:00.2 on NUMA socket -1
> EAL:   Invalid NUMA socket, default to 0
> EAL:   probe driver: 8086:1521 net_e1000_igb
> EAL: PCI device 0000:06:00.3 on NUMA socket -1
> EAL:   Invalid NUMA socket, default to 0
> EAL:   probe driver: 8086:1521 net_e1000_igb
> EAL: PCI device 0000:08:00.0 on NUMA socket -1
> EAL:   Invalid NUMA socket, default to 0
> EAL:   probe driver: 8086:10d3 net_e1000_em
> MAC updating enabled
> MBUF: error setting mempool handler
> EAL: Error - exiting with code: 1
>   Cause: Cannot init mbuf pool
> 
> 2nd Option of setting CONFIG_RTE_EAL_PMD_PATH option is ideal, but I run into issue with as well. I am configuring and installing the DPDK with CONFIG_RTE_EAL_PMD_PATH set as 
> CONFIG_RTE_EAL_PMD_PATH=$(HOME)/dpdk-18.08/x86_64-native-linuxapp-gcc/lib
> 
> I this case I get following error when I run l2fwd
> 
> root:build$./l2fwd 
> EAL: Detected 6 lcore(s)
> EAL: Detected 1 NUMA nodes
> EAL: /home/sp2/dpdk-18.08/x86_64-native-linuxapp-gcc/lib/libdpdk.so: invalid ELF header
> EAL: FATAL: Cannot init plugins
> 
> EAL: Cannot init plugins
> 
> EAL: Error - exiting with code: 1
>   Cause: Invalid EAL arguments
> 

To use CONFIG_RTE_EAL_PMD_PATH, you really need to have the drivers all in
a separate directory, without any additional libs present. Other non-PMD
libraries will cause the error above when they are loaded.

/Bruce