Re: [Qemu-devel] [PATCH v3] VMXNET3 paravirtual NIC device implementation

[Dmitry Fleytman]

Gerhard,

Thanks for your report.
We are looking at it.

Dmitry Fleytman.

On Fri, Mar 9, 2012 at 8:41 AM, Gerhard Wiesinger <address@hidden> wrote:
> Hello Dmitry,
>
> Issue is solved in V3 but I'm still having problems (core dumps) with qemu
> and qemu-kvm:
>
> 1.) qemu crashes
> works well with basic ping tests but with generating load on the network
> interface (my standard netio tests (netio -s, netio -t server),
> http://www.ars.de/ars/ars.nsf/docs/netio)
> under same Knoppix testcase cores. Details are below.
>
> Also performance as far as the test runs was not high (should be
>>
>> 50000 kByte/s):
>
> Packet size  1k bytes:  4181 KByte/s Tx,  5276 KByte/s Rx.
> Details below.
>
> 2.) qemu-kvm core dump on startup, core dump details below
> -device vmxnet3,mac=1a:46:0b:ca:bc:7e,vlan=1,romfile=
> -net tap,ifname=tap1,script=no,downscript=no,vlan=1
> kvm_msix_vector_add: kvm_add_msix failed: No space left on device
> [vmxnet3][WR][vmxnet3_use_msix_vectors]: Failed to use MSI-X vector 9, error
> -28
> [vmxnet3][WR][vmxnet3_init_msix]: Failed to use MSI-X vectors, error 0
> qemu: hardware error: Failed to initialize MSI-X, configuration is
> inconsistent.
>
> Any ideas?
> Can you please retest this scenario.
>
> Please add Reported-by lines ...
>
> Thnx.
>
> Ciao,
> Gerhard
>
> --
> http://www.wiesinger.com/
>
> 1.) qemu backtrace
> [vmxnet3][WR][vmxnet3_peer_has_vnet_hdr]: Peer has no virtio extension. Task
> offloads will be emulated.
> qemu-system-x86_64: /root/download/qemu/git/qemu/hw/vmxnet_utils.c:186:
> eth_setup_ip4_fragmentation: Assertion `0 == frag_offset % (8)' failed.
> #0  0x00007f5f53c03285 in raise () from /lib64/libc.so.6
> #1  0x00007f5f53c04b9b in abort () from /lib64/libc.so.6
> #2  0x00007f5f53bfbe9e in __assert_fail_base () from /lib64/libc.so.6
> #3  0x00007f5f53bfbf42 in __assert_fail () from /lib64/libc.so.6
> #4  0x00007f5f564ce378 in eth_setup_ip4_fragmentation (l2hdr=<optimized
> out>, l2hdr_len=<optimized out>, l3hdr=<optimized out>,
>  l3hdr_len=<optimized out>, l3payload_len=<optimized out>,
> frag_offset=<optimized out>, more_frags=false)    at
> /root/download/qemu/git/qemu/hw/vmxnet_utils.c:186
> #5  0x00007f5f564cd325 in vmxnet3_txpkt_do_sw_fragmentation
> (s=0x7f5f57c340a0, p=0x7f5f57c35340)    at
> /root/download/qemu/git/qemu/hw/vmxnet3.c:955
> #6  0x00007f5f564cdac1 in vmxnet3_send_with_sw_offloads (pkt=<optimized
> out>, s=0x7f5f57c340a0) at /root/download/qemu/git/qemu/hw/vmxnet3.c:985
> #7  vmxnet3_send_packet (qidx=0, pkt=<optimized out>, s=<optimized out>) at
> /root/download/qemu/git/qemu/hw/vmxnet3.c:1231
> #8  vmxnet3_process_tx_queue (qidx=<optimized out>, s=<optimized out>) at
> /root/download/qemu/git/qemu/hw/vmxnet3.c:1306
> #9  vmxnet3_io_bar0_write (opaque=<optimized out>, addr=<optimized out>,
> val=<optimized out>, size=<optimized out>)    at
> /root/download/qemu/git/qemu/hw/vmxnet3.c:1630
> #10 0x00007f5f56575ba0 in access_with_adjusted_size (addr=1536,
> value=0x7f5f3144e7e0, size=4, access_size_min=<optimized out>,
>  access_size_max=<optimized out>, access=0x7f5f56575ac0
> <memory_region_write_accessor>, opaque=0x7f5f57c344d0)    at
> /root/download/qemu/git/qemu/memory.c:359
> #11 0x00007f5f5657a6ec in memory_region_dispatch_write (size=4, data=39,
> addr=1536, mr=0x7f5f57c344d0)    at
> /root/download/qemu/git/qemu/memory.c:928
> #12 io_mem_write (io_index=<optimized out>, addr=1536, val=<optimized out>,
> size=4) at /root/download/qemu/git/qemu/memory.c:1512
> #13 0x0000000049463183 in ?? ()
> #14 0x0000000000000000 in ?? ()
>
>
> 2.) qemu-kvm backtrace
> #0  0x00007f25e4330285 in raise () from /lib64/libc.so.6
> #1  0x00007f25e4331b9b in abort () from /lib64/libc.so.6
> #2  0x00007f25e6c6fe7a in hw_error (fmt=<optimized out>) at
> /root/download/qemu/git/qemu-kvm/cpus.c:357
> #3  0x00007f25e6bf1f01 in vmxnet3_pci_init (dev=0x7f25e8dced80) at
> /root/download/qemu/git/qemu-kvm/hw/vmxnet3.c:2631
> #4  0x00007f25e6ce01c6 in pci_qdev_init (qdev=0x7f25e8dced80) at
> /root/download/qemu/git/qemu-kvm/hw/pci.c:1589
> #5  0x00007f25e6c14d4a in qdev_init (dev=0x7f25e8dced80) at
> /root/download/qemu/git/qemu-kvm/hw/qdev.c:150
> #6  0x00007f25e6c1024e in qdev_device_add (opts=0x7f25e8ccdb80) at
> /root/download/qemu/git/qemu-kvm/hw/qdev-monitor.c:465
> #7  0x00007f25e6bebff9 in device_init_func (opts=<optimized out>,
> opaque=<optimized out>) at /root/download/qemu/git/qemu-kvm/vl.c:1827
> #8  0x00007f25e6c1e492 in qemu_opts_foreach (list=<optimized out>,
> func=0x7f25e6bebfe0 <device_init_func>, opaque=0x0,
>  abort_on_failure=<optimized out>) at qemu-option.c:1053
> #9  0x00007f25e6b184b5 in main (argc=<optimized out>, argv=<optimized out>,
> envp=<optimized out>) at /root/download/qemu/git/qemu-kvm/vl.c:3543
>
>
> On Wed, 7 Mar 2012, Dmitry Fleytman wrote:
>
>> Changes in V3:
>>  Fixed crash when net device that is used as network fronted has no
>>  virtio HDR support.
>>  Task offloads emulation for cases when net device that is used as
>>  network fronted has no virtio HDR support.
>> Changes in V2:
>>  License text changed accoring to community suggestions
>>  Standard license header from GPLv2+ - licensed QEMU files used
>>
>> Dmitry Fleytman (1):
>>  VMXNET3 paravirtual NIC device implementation
>>
>> Makefile.objs           |    1 +
>> default-configs/pci.mak |    1 +
>> hw/pci.c                |    2 +
>> hw/pci.h                |    1 +
>> hw/virtio-net.h         |   13 +-
>> hw/vmware_utils.h       |  131 +++
>> hw/vmxnet3.c            | 2744
>> +++++++++++++++++++++++++++++++++++++++++++++++
>> hw/vmxnet3.h            |  727 +++++++++++++
>> hw/vmxnet3_debug.h      |  104 ++
>> hw/vmxnet_utils.c       |  202 ++++
>> hw/vmxnet_utils.h       |  263 +++++
>> iov.c                   |   27 +
>> iov.h                   |    3 +
>> net.c                   |    2 +-
>> net/checksum.h          |    7 +
>> 15 files changed, 4221 insertions(+), 7 deletions(-)
>> create mode 100644 hw/vmware_utils.h
>> create mode 100644 hw/vmxnet3.c
>> create mode 100644 hw/vmxnet3.h
>> create mode 100644 hw/vmxnet3_debug.h
>> create mode 100644 hw/vmxnet_utils.c
>> create mode 100644 hw/vmxnet_utils.h
>>
>> --
>> 1.7.7.6
>>
>>
>>
>