[dpdk-dev] [PATCH v5 resend 07/12] virtio: resolve for control queue

Steffen Bauch mail at steffenbauch.de
Mon Oct 12 22:58:17 CEST 2015
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On 10/12/2015 10:39 AM, Yuanhan Liu wrote:
> Hi,
>
> I just recognized that this dead loop is the same one that I have
> experienced (see
> http://dpdk.org/ml/archives/dev/2015-October/024737.html for
> reference). Just applying the changes in this patch (only 07/12)
> will not fix the dead loop at least in my setup.
> Try to enable CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_INIT, and dump more log?
I enabled the additional debug output. First try was without any 
additional changes in master, but it blocked also. Second try was with

[dpdk-dev] [PATCH v6 06/13] virtio: read virtio_net_config correctly

applied, but same result.

If you want to recreate my setup, just follow instructions in

http://dpdk.org/ml/archives/dev/2015-October/024737.html


vagrant at vagrant-ubuntu-vivid-64:~/dpdk$ git status
On branch master
Your branch is up-to-date with 'origin/master'.
Changes not staged for commit:
   (use "git add <file>..." to update what will be committed)
   (use "git checkout -- <file>..." to discard changes in working directory)

     modified:   config/defconfig_x86_64-native-linuxapp-gcc

..

vagrant at vagrant-ubuntu-vivid-64:~/dpdk/x86_64-native-linuxapp-gcc/app$ 
sudo ./testpmd -b 0000:00:03.0 -c 3 -n 1 -- -i
EAL: Detected lcore 0 as core 0 on socket 0
EAL: Detected lcore 1 as core 1 on socket 0
EAL: Support maximum 128 logical core(s) by configuration.
EAL: Detected 2 lcore(s)
EAL: VFIO modules not all loaded, skip VFIO support...
EAL: Setting up physically contiguous memory...
EAL: Ask a virtual area of 0x400000 bytes
EAL: Virtual area found at 0x7f2a3a800000 (size = 0x400000)
EAL: Ask a virtual area of 0xe000000 bytes
EAL: Virtual area found at 0x7f2a2c600000 (size = 0xe000000)
EAL: Ask a virtual area of 0x30c00000 bytes
EAL: Virtual area found at 0x7f29fb800000 (size = 0x30c00000)
EAL: Ask a virtual area of 0x400000 bytes
EAL: Virtual area found at 0x7f29fb200000 (size = 0x400000)
EAL: Ask a virtual area of 0xa00000 bytes
EAL: Virtual area found at 0x7f29fa600000 (size = 0xa00000)
EAL: Ask a virtual area of 0x200000 bytes
EAL: Virtual area found at 0x7f29fa200000 (size = 0x200000)
EAL: Requesting 512 pages of size 2MB from socket 0
EAL: TSC frequency is ~2198491 KHz
EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using 
unreliable clock cycles !
EAL: Master lcore 0 is ready (tid=3c9938c0;cpuset=[0])
EAL: lcore 1 is ready (tid=fa1ff700;cpuset=[1])
EAL: PCI device 0000:00:03.0 on NUMA socket -1
EAL:   probe driver: 1af4:1000 rte_virtio_pmd
EAL:   Device is blacklisted, not initializing
EAL: PCI device 0000:00:08.0 on NUMA socket -1
EAL:   probe driver: 1af4:1000 rte_virtio_pmd
PMD: parse_sysfs_value(): parse_sysfs_value(): cannot open sysfs value 
/sys/bus/pci/devices/0000:00:08.0/uio/uio0/portio/port0/size
PMD: virtio_resource_init_by_uio(): virtio_resource_init_by_uio(): 
cannot parse size
PMD: virtio_resource_init_by_ioports(): PCI Port IO found start=0xd040 
with size=0x20
PMD: virtio_negotiate_features(): guest_features before negotiate = cf8020
PMD: virtio_negotiate_features(): host_features before negotiate = 410fdda3
PMD: virtio_negotiate_features(): features after negotiate = f8020
PMD: eth_virtio_dev_init(): PORT MAC: 08:00:27:CC:DE:CD
PMD: eth_virtio_dev_init(): VIRTIO_NET_F_MQ is not supported
PMD: virtio_dev_cq_queue_setup():  >>
PMD: virtio_dev_queue_setup(): selecting queue: 2
PMD: virtio_dev_queue_setup(): vq_size: 16 nb_desc:0
PMD: virtio_dev_queue_setup(): vring_size: 4228, rounded_vring_size: 8192
PMD: virtio_dev_queue_setup(): vq->vq_ring_mem:      0x67b54000
PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7f29fb354000
PMD: eth_virtio_dev_init(): config->max_virtqueue_pairs=1
PMD: eth_virtio_dev_init(): config->status=1
PMD: eth_virtio_dev_init(): PORT MAC: 08:00:27:CC:DE:CD
PMD: eth_virtio_dev_init(): hw->max_rx_queues=1 hw->max_tx_queues=1
PMD: eth_virtio_dev_init(): port 0 vendorID=0x1af4 deviceID=0x1000
PMD: virtio_dev_vring_start():  >>
EAL: PCI device 0000:00:09.0 on NUMA socket -1
EAL:   probe driver: 1af4:1000 rte_virtio_pmd
PMD: parse_sysfs_value(): parse_sysfs_value(): cannot open sysfs value 
/sys/bus/pci/devices/0000:00:09.0/uio/uio1/portio/port0/size
PMD: virtio_resource_init_by_uio(): virtio_resource_init_by_uio(): 
cannot parse size
PMD: virtio_resource_init_by_ioports(): PCI Port IO found start=0xd060 
with size=0x20
PMD: virtio_negotiate_features(): guest_features before negotiate = cf8020
PMD: virtio_negotiate_features(): host_features before negotiate = 410fdda3
PMD: virtio_negotiate_features(): features after negotiate = f8020
PMD: eth_virtio_dev_init(): PORT MAC: 08:00:27:07:D3:F5
PMD: eth_virtio_dev_init(): VIRTIO_NET_F_MQ is not supported
PMD: virtio_dev_cq_queue_setup():  >>
PMD: virtio_dev_queue_setup(): selecting queue: 2
PMD: virtio_dev_queue_setup(): vq_size: 16 nb_desc:0
PMD: virtio_dev_queue_setup(): vring_size: 4228, rounded_vring_size: 8192
PMD: virtio_dev_queue_setup(): vq->vq_ring_mem:      0x67b50000
PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7f29fb350000
PMD: eth_virtio_dev_init(): config->max_virtqueue_pairs=1
PMD: eth_virtio_dev_init(): config->status=1
PMD: eth_virtio_dev_init(): PORT MAC: 08:00:27:07:D3:F5
PMD: eth_virtio_dev_init(): hw->max_rx_queues=1 hw->max_tx_queues=1
PMD: eth_virtio_dev_init(): port 1 vendorID=0x1af4 deviceID=0x1000
PMD: virtio_dev_vring_start():  >>
Interactive-mode selected
Configuring Port 0 (socket 0)
PMD: virtio_dev_configure(): configure
PMD: virtio_dev_tx_queue_setup():  >>
PMD: virtio_dev_queue_setup(): selecting queue: 1
PMD: virtio_dev_queue_setup(): vq_size: 256 nb_desc:512
PMD: virtio_dev_queue_setup(): vring_size: 10244, rounded_vring_size: 12288
PMD: virtio_dev_queue_setup(): vq->vq_ring_mem:      0x5fb000
PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7f2a3a9fb000
PMD: virtio_dev_rx_queue_setup():  >>
PMD: virtio_dev_queue_setup(): selecting queue: 0
PMD: virtio_dev_queue_setup(): vq_size: 256 nb_desc:128
PMD: virtio_dev_queue_setup(): vring_size: 10244, rounded_vring_size: 12288
PMD: virtio_dev_queue_setup(): vq->vq_ring_mem:      0x5f6000
PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7f2a3a9f6000
PMD: virtio_dev_link_update(): Get link status from hw
PMD: virtio_dev_link_update(): Port 0 is up
PMD: virtio_dev_rxtx_start():  >>
PMD: virtio_dev_vring_start():  >>
PMD: virtio_dev_vring_start(): Allocated 256 bufs
PMD: virtio_dev_vring_start():  >>
PMD: virtio_dev_start(): nb_queues=1
PMD: virtio_dev_start(): Notified backend at initialization
PMD: virtio_send_command(): vq->vq_desc_head_idx = 0, status = 255, 
vq->hw->cvq = 0x7f29fb3567c0 vq = 0x7f29fb3567c0
PMD: virtio_send_command(): vq->vq_queue_index = 2

[ ... blocking]


Results after patch was applied:

vagrant at vagrant-ubuntu-vivid-64:~/dpdk/x86_64-native-linuxapp-gcc/app$ 
sudo ./testpmd -b 0000:00:03.0 -c 3 -n 1 -- -iEAL: Detected lcore 0 as 
core 0 on socket 0
EAL: Detected lcore 1 as core 1 on socket 0
EAL: Support maximum 128 logical core(s) by configuration.
EAL: Detected 2 lcore(s)
EAL: VFIO modules not all loaded, skip VFIO support...
EAL: Setting up physically contiguous memory...
EAL: Ask a virtual area of 0x400000 bytes
EAL: Virtual area found at 0x7f2c8e000000 (size = 0x400000)
EAL: Ask a virtual area of 0xe000000 bytes
EAL: Virtual area found at 0x7f2c7fe00000 (size = 0xe000000)
EAL: Ask a virtual area of 0x30c00000 bytes
EAL: Virtual area found at 0x7f2c4f000000 (size = 0x30c00000)
EAL: Ask a virtual area of 0x400000 bytes
EAL: Virtual area found at 0x7f2c4ea00000 (size = 0x400000)
EAL: Ask a virtual area of 0xa00000 bytes
EAL: Virtual area found at 0x7f2c4de00000 (size = 0xa00000)
EAL: Ask a virtual area of 0x200000 bytes
EAL: Virtual area found at 0x7f2c4da00000 (size = 0x200000)
EAL: Requesting 512 pages of size 2MB from socket 0
EAL: TSC frequency is ~2198491 KHz
EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using 
unreliable clock cycles !
EAL: Master lcore 0 is ready (tid=904928c0;cpuset=[0])
EAL: lcore 1 is ready (tid=4d9ff700;cpuset=[1])
EAL: PCI device 0000:00:03.0 on NUMA socket -1
EAL:   probe driver: 1af4:1000 rte_virtio_pmd
EAL:   Device is blacklisted, not initializing
EAL: PCI device 0000:00:08.0 on NUMA socket -1
EAL:   probe driver: 1af4:1000 rte_virtio_pmd
PMD: parse_sysfs_value(): parse_sysfs_value(): cannot open sysfs value 
/sys/bus/pci/devices/0000:00:08.0/uio/uio0/portio/port0/size
PMD: virtio_resource_init_by_uio(): virtio_resource_init_by_uio(): 
cannot parse size
PMD: virtio_resource_init_by_ioports(): PCI Port IO found start=0xd040 
with size=0x20
PMD: virtio_negotiate_features(): guest_features before negotiate = cf8020
PMD: virtio_negotiate_features(): host_features before negotiate = 410fdda3
PMD: virtio_negotiate_features(): features after negotiate = f8020
PMD: eth_virtio_dev_init(): PORT MAC: 08:00:27:CC:DE:CD
PMD: eth_virtio_dev_init(): VIRTIO_NET_F_MQ is not supported
PMD: virtio_dev_cq_queue_setup():  >>
PMD: virtio_dev_queue_setup(): selecting queue: 2
PMD: virtio_dev_queue_setup(): vq_size: 16 nb_desc:0
PMD: virtio_dev_queue_setup(): vring_size: 4228, rounded_vring_size: 8192
PMD: virtio_dev_queue_setup(): vq->vq_ring_mem:      0x67b54000
PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7f2c4eb54000
PMD: eth_virtio_dev_init(): config->max_virtqueue_pairs=1
PMD: eth_virtio_dev_init(): config->status=1
PMD: eth_virtio_dev_init(): PORT MAC: 08:00:27:CC:DE:CD
PMD: eth_virtio_dev_init(): hw->max_rx_queues=1 hw->max_tx_queues=1
PMD: eth_virtio_dev_init(): port 0 vendorID=0x1af4 deviceID=0x1000
PMD: virtio_dev_vring_start():  >>
EAL: PCI device 0000:00:09.0 on NUMA socket -1
EAL:   probe driver: 1af4:1000 rte_virtio_pmd
PMD: parse_sysfs_value(): parse_sysfs_value(): cannot open sysfs value 
/sys/bus/pci/devices/0000:00:09.0/uio/uio1/portio/port0/size
PMD: virtio_resource_init_by_uio(): virtio_resource_init_by_uio(): 
cannot parse size
PMD: virtio_resource_init_by_ioports(): PCI Port IO found start=0xd060 
with size=0x20
PMD: virtio_negotiate_features(): guest_features before negotiate = cf8020
PMD: virtio_negotiate_features(): host_features before negotiate = 410fdda3
PMD: virtio_negotiate_features(): features after negotiate = f8020
PMD: eth_virtio_dev_init(): PORT MAC: 08:00:27:07:D3:F5
PMD: eth_virtio_dev_init(): VIRTIO_NET_F_MQ is not supported
PMD: virtio_dev_cq_queue_setup():  >>
PMD: virtio_dev_queue_setup(): selecting queue: 2
PMD: virtio_dev_queue_setup(): vq_size: 16 nb_desc:0
PMD: virtio_dev_queue_setup(): vring_size: 4228, rounded_vring_size: 8192
PMD: virtio_dev_queue_setup(): vq->vq_ring_mem:      0x67b50000
PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7f2c4eb50000
PMD: eth_virtio_dev_init(): config->max_virtqueue_pairs=1
PMD: eth_virtio_dev_init(): config->status=1
PMD: eth_virtio_dev_init(): PORT MAC: 08:00:27:07:D3:F5
PMD: eth_virtio_dev_init(): hw->max_rx_queues=1 hw->max_tx_queues=1
PMD: eth_virtio_dev_init(): port 1 vendorID=0x1af4 deviceID=0x1000
PMD: virtio_dev_vring_start():  >>
Interactive-mode selected
Configuring Port 0 (socket 0)
PMD: virtio_dev_configure(): configure
PMD: virtio_dev_tx_queue_setup():  >>
PMD: virtio_dev_queue_setup(): selecting queue: 1
PMD: virtio_dev_queue_setup(): vq_size: 256 nb_desc:512
PMD: virtio_dev_queue_setup(): vring_size: 10244, rounded_vring_size: 12288
PMD: virtio_dev_queue_setup(): vq->vq_ring_mem:      0x5fb000
PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7f2c8e1fb000
PMD: virtio_dev_rx_queue_setup():  >>
PMD: virtio_dev_queue_setup(): selecting queue: 0
PMD: virtio_dev_queue_setup(): vq_size: 256 nb_desc:128
PMD: virtio_dev_queue_setup(): vring_size: 10244, rounded_vring_size: 12288
PMD: virtio_dev_queue_setup(): vq->vq_ring_mem:      0x5f6000
PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7f2c8e1f6000
PMD: virtio_dev_link_update(): Get link status from hw
PMD: virtio_dev_link_update(): Port 0 is up
PMD: virtio_dev_rxtx_start():  >>
PMD: virtio_dev_vring_start():  >>
PMD: virtio_dev_vring_start(): Allocated 256 bufs
PMD: virtio_dev_vring_start():  >>
PMD: virtio_dev_start(): nb_queues=1
PMD: virtio_dev_start(): Notified backend at initialization
PMD: virtio_send_command(): vq->vq_desc_head_idx = 0, status = 255, 
vq->hw->cvq = 0x7f2c4eb567c0 vq = 0x7f2c4eb567c0
PMD: virtio_send_command(): vq->vq_queue_index = 2

[... blocking]
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