<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="EN-US" link="#0563C1" vlink="#954F72" style="word-wrap:break-word"> <div class="WordSection1"> Hello!<o:p></o:p> <o:p> </o:p> My name is Kyle Gagnon and I work at General Dynamics Mission Systems. We are evaluating DPDK and its use. I am currently trying to get DPDK to work on a Xilinx ZCU102 evaluation board. The problem is that the NIC is an onboard ethernet interface so it does not go through any PCI. I won’t be able to use an external NIC card so I have to work with what I have. I understand that I can use the PCAP library PMD. Here is my question if you don’t mind helping me out!<o:p></o:p> <o:p> </o:p> I am compiling DPDK through meson and then in a custom application I am writing myself I have to use Makefiles. I need to statically link all of the libraries. So I did that and wrote an extremely basic program that doesn’t do much at all. Here it is (I am copying from another computer. This is a C++ application and I am building it for ARM on an x86_64 Ubuntu WSL machine)<o:p></o:p> <o:p> </o:p> DpdkEntry.cpp<o:p></o:p> <o:p> </o:p> #include <iostream><o:p></o:p> #include <string><o:p></o:p> <o:p> </o:p> #include <rte_eal.h><o:p></o:p> #include <rte_ethdev.h><o:p></o:p> #include <rte_cycles.h><o:p></o:p> #include <rte_lcore.h><o:p></o:p> #include <rte_mbuf.h><o:p></o:p> <o:p> </o:p> Int main(int argc, char **argv) {<o:p></o:p> <o:p> </o:p> int returnVal;<o:p></o:p> <o:p> </o:p> std::cout << “Setting up EAL environment\n”;<o:p></o:p> <o:p> </o:p> returnVal = rte_eal_init(argc, argv);<o:p></o:p> if (returnVal < 0) {<o:p></o:p> rte_exit(EXIT_FAILURE, “Error with initializing EAL\n”);<o:p></o:p> }<o:p></o:p> <o:p> </o:p> rte_eal_cleanup();<o:p></o:p> <o:p> </o:p> return 0;<o:p></o:p> }<o:p></o:p> <o:p> </o:p> When I run this application through a QEMU emulation of the ZCU102 board I use the following command<o:p></o:p> <o:p> </o:p> dpdk-test -l 0-3 -n 4 –vdev ‘net_pcap0,iface=eth0’<o:p></o:p> <o:p> </o:p> I have built librte_net_pcap and linked it in so it is in the application. When I run the above command (using the above source code) I get the following:<o:p></o:p> <o:p> </o:p> EAL: Detected CPU lcores: 4<o:p></o:p> EALL Detected NUMA nodes: 1<o:p></o:p> EAL: Detected static linkage of DPDK<o:p></o:p> EAL: failed to parse device “net_pcap0”<o:p></o:p> EAL: Unable to parse device ‘net_pcap0,iface=eth0’<o:p></o:p> EAL: Error – exiting with code: 1<o:p></o:p> Cause: Error with initializing EAL<o:p></o:p> <o:p> </o:p> When I run a testpmd with the same parameters on the same emulated board I am able to use the ethernet port so what am I doing wrong with my custom code? I am going to forward this to my personal email in case I need to follow up with more information (the source code and building is on my personal computer rather than my work computer).<o:p></o:p> <o:p> </o:p> Thank you!<o:p></o:p> Kyle Gagnon<o:p></o:p> General Dynamics Mission Systems<o:p></o:p> 150 Rustcraft Rd | Dedham, MA 02026<o:p></o:p> (781) 410 - 3820 | Kyle.Gagnon@gd-ms.com<o:p></o:p> <o:p> </o:p> </div> </body> </html>