Hello,

The first error is "Cause: Error: number of ports must be even"


03/05/2023 18:13, Igor de Paula:
> I am running a VM inside a VMWARE server (vSphere).
> My goal it to set up DPDK with two HW ports, and set up a virtio_user to
> interact with the kernel stack.
> In another app I have it working but instead of virtio_user I am running
> KNI, it works in IOVA-PA mode.
> I am looking to replace the KNI.
>
> When I try to set up virtio_user port as in the doc:
> https://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html#virtio-user-as-exception-path
> I get a error it can't run in PA mode.
>
>
> When I try to run as VA mode from a parameter, I get the following errors:
> EAL: lib.eal log level changed from info to debug
> EAL: Detected lcore 0 as core 0 on socket 0
> EAL: Detected lcore 1 as core 0 on socket 0
> EAL: Support maximum 128 logical core(s) by configuration.
> EAL: Detected 2 lcore(s)
> EAL: Detected 1 NUMA nodes
> EAL: Checking presence of .so 'librte_eal.so.21.3'
> EAL: Checking presence of .so 'librte_eal.so.21'
> EAL: Checking presence of .so 'librte_eal.so'
> EAL: Detected static linkage of DPDK
> EAL: Ask a virtual area of 0x7000 bytes
> EAL: Virtual area found at 0x100000000 (size = 0x7000)
> EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
> EAL: DPAA Bus not present. Skipping.
> EAL: VFIO PCI modules not loaded
> EAL: Selected IOVA mode 'VA'
> EAL: Probing VFIO support...
> EAL: IOMMU type 1 (Type 1) is supported
> EAL: IOMMU type 7 (sPAPR) is not supported
> EAL: IOMMU type 8 (No-IOMMU) is supported
> EAL: VFIO support initialized
> EAL: Ask a virtual area of 0x5b000 bytes
> EAL: Virtual area found at 0x100007000 (size = 0x5b000)
> EAL: Setting up physically contiguous memory...
> EAL: Setting maximum number of open files to 1048576
> EAL: Detected memory type: socket_id:0 hugepage_sz:1073741824
> EAL: Creating 2 segment lists: n_segs:128 socket_id:0 hugepage_sz:1073741824
> EAL: Ask a virtual area of 0x2000 bytes
> EAL: Virtual area found at 0x100062000 (size = 0x2000)
> EAL: Memseg list allocated at socket 0, page size 0x100000kB
> EAL: Ask a virtual area of 0x2000000000 bytes
> EAL: Virtual area found at 0x140000000 (size = 0x2000000000)
> EAL: VA reserved for memseg list at 0x140000000, size 2000000000
> EAL: Ask a virtual area of 0x2000 bytes
> EAL: Virtual area found at 0x2140000000 (size = 0x2000)
> EAL: Memseg list allocated at socket 0, page size 0x100000kB
> EAL: Ask a virtual area of 0x2000000000 bytes
> EAL: Virtual area found at 0x2180000000 (size = 0x2000000000)
> EAL: VA reserved for memseg list at 0x2180000000, size 2000000000
> EAL: TSC frequency is ~2350000 KHz
> EAL: Main lcore 0 is ready (tid=7f8ad790ec00;cpuset=[0])
> EAL: lcore 1 is ready (tid=7f8ad6907400;cpuset=[1])
> EAL: Trying to obtain current memory policy.
> EAL: Setting policy MPOL_PREFERRED for socket 0
> EAL: Restoring previous memory policy: 0
> EAL: request: mp_malloc_sync
> EAL: Heap on socket 0 was expanded by 1024MB
> EAL: PCI device 0000:0b:00.0 on NUMA socket -1
> EAL:   probe driver: 15ad:7b0 net_vmxnet3
> EAL:   Expecting 'PA' IOVA mode but current mode is 'VA', not initializing
> EAL: Requested device 0000:0b:00.0 cannot be used
> EAL: PCI device 0000:13:00.0 on NUMA socket -1
> EAL:   probe driver: 15ad:7b0 net_vmxnet3
> EAL:   Expecting 'PA' IOVA mode but current mode is 'VA', not initializing
> EAL: Requested device 0000:13:00.0 cannot be used
> EAL: Bus (pci) probe failed.
> EAL: lib.telemetry log level changed from disabled to warning
> EAL: Error - exiting with code: 1
>   Cause: Error: number of ports must be even
> EAL: request: mp_malloc_sync
> EAL: Heap on socket 0 was shrunk by 1024MB
>
>
>
> For some reason the HW ports won't setup. From what I understand
> net_vmxnet3 should work with VA mode.
> I enabled I/OMUU for the VM.
> The weird thing even when enabled, I still have the
> enable_unsafe_noiommu_mode flag on.
> And because it's on the this:
>
> dev_iova_mode = pci_device_iova_mode(dr, dev);
>
> return PA mode, and it fails.
>
> When I disable it by modifying
> /sys/module/vfio/parameters/enable_unsafe_noiommu_mode, I get another error.
> The error is that it doesn't find a suitable IOMMU type:
> Just putting the relevant message:
>
>
> EAL: Heap on socket 0 was expanded by 1024MB
> EAL: PCI device 0000:0b:00.0 on NUMA socket -1
> EAL:   probe driver: 15ad:7b0 net_vmxnet3
> EAL: Set IOMMU type 1 (Type 1) failed, error 19 (No such device)
> EAL: Set IOMMU type 7 (sPAPR) failed, error 19 (No such device)
> EAL: Set IOMMU type 8 (No-IOMMU) failed, error 19 (No such device)
> EAL: 0000:0b:00.0 failed to select IOMMU type
> EAL: Requested device 0000:0b:00.0 cannot be used
> EAL: PCI device 0000:13:00.0 on NUMA socket -1
> EAL:   probe driver: 15ad:7b0 net_vmxnet3
> EAL: Set IOMMU type 1 (Type 1) failed, error 19 (No such device)
> EAL: Set IOMMU type 7 (sPAPR) failed, error 19 (No such device)
> EAL: Set IOMMU type 8 (No-IOMMU) failed, error 19 (No such device)
> EAL: 0000:13:00.0 failed to select IOMMU type
> EAL: Requested device 0000:13:00.0 cannot be used
>
>
> I can see where it fails:
>
>
> const struct vfio_iommu_type *
> vfio_set_iommu_type(int vfio_container_fd)
> {
> unsigned idx;
> for (idx = 0; idx < RTE_DIM(iommu_types); idx++) {
> const struct vfio_iommu_type *t = &iommu_types[idx];
>
> int ret = ioctl(vfio_container_fd, VFIO_SET_IOMMU,
> t->type_id);
> if (!ret) {
> RTE_LOG(INFO, EAL, "Using IOMMU type %d (%s)\n",
> t->type_id, t->name);
> return t;
> }
> /* not an error, there may be more supported IOMMU types */
> RTE_LOG(DEBUG, EAL, "Set IOMMU type %d (%s) failed, error "
> "%i (%s)\n", t->type_id, t->name, errno,
> strerror(errno));
> }
> /* if we didn't find a suitable IOMMU type, fail */
> return NULL;
> }
>
>
> The ioctl returns -1.
>
>
>
> I tried many things.
> Enabling/disabling IOMMU.
> Modifying the enable_unsafe_noiommu_mode flag.
> Running in PA mode.
> Any help will be much appreciated.
>