I did a bit more experimentation and found the following. If I unmark the rte_igb_pmd_init function as static, and call it directly from my code, the driver will load, and the port count increments to 2:
EAL: PCI device 0000:01:00.0 on NUMA socket -1 EAL: probe driver: 8086:1521 rte_igb_pmd EAL: PCI memory mapped at 0x7f09d45f2000 EAL: PCI memory mapped at 0x7f09d4730000 PMD: eth_igb_dev_init(): port_id 0 vendorID=0x8086 deviceID=0x1521 EAL: PCI device 0000:01:00.1 on NUMA socket -1 EAL: probe driver: 8086:1521 rte_igb_pmd EAL: PCI memory mapped at 0x7f09d0f00000 EAL: PCI memory mapped at 0x7f09d472c000 PMD: eth_igb_dev_init(): port_id 1 vendorID=0x8086 deviceID=0x1521 So it seems like when you enable these options: # Combine to one single library CONFIG_RTE_BUILD_COMBINE_LIBS=y CONFIG_RTE_LIBNAME="intel_dpdk" You don't really get a working DPDK inside of "-lintel_dpdk". Someone suggested linking with "-Xlinker -lintel_dpdk" but that didn't seem to help. Is there a secret to getting a single integrated static library, where all of the PMD's end up in the PCI driver list so rte_eal_pci_probe can find them? Or some secret to linking against the combined library which works properly? Matthew. On Fri, Aug 01, 2014 at 10:51:38AM -0700, Matthew Hall wrote: > Hello, > > I am running into a problem where Eth driver init works fine in a sample app > and finds my NICs, and the NICs appear in rte_eal_pci_dump(stdout) but they > don't show up in rte_eth_dev_count() even after rte_eal_pci_probe() is called > the same as the sample apps, so my app won't boot. > > I have a lot of experience using the older versions of the DPDK where you had > to call the PMD init functions manually but no experience with the later > versions where the DPDK is supposed to init the PMDs itself automatically. > > What do I have to do to dump the most possible debug output on why the driver > list for my PCI devices always seems empty? Any places I should look to see > the issue? Maybe I didn't link it together with the right DPDK libs? I used > the combined DPDK static lib libintel_dpdk.a to make things simpler as I had > seen recommended in various places. > > Thanks, > Matthew.
