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vhost-user with zero copy #152

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wants to merge 12 commits into from
Closed

vhost-user with zero copy #152

wants to merge 12 commits into from

Commits on Apr 23, 2014

  1. Make 'Source' use external rx_buffer_freelist 

    Packet size can be passed as :new argument - defaults to 60.

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
    Nikolay Nikolaev committed Apr 23, 2014
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  2. packet deref and free - add freelist argument 

    Not all packets are allocated from the global `buffer`.
We need a freelist argument to deref and free in order to properly
'free' the iovec attached buffers.

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
    Nikolay Nikolaev committed Apr 23, 2014
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  3. packet - add packet_size 

    This saves some processing at runtime.

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
    Nikolay Nikolaev committed Apr 23, 2014
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  4. Added designs.nfv.nfv. 

    This is currently a simple application that connects one vhost_user
interface with one intel10g interface.

Fixes in the original version - pci, rx/tx naming, update to latest
intel args passing.

Signed-off-by: Luke Gorrie <luke@snabb.co>
Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
    Nikolay Nikolaev committed Apr 23, 2014
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  5. Align to latest vhost-user-v9 

    Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
    Nikolay Nikolaev committed Apr 23, 2014
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  6. Decouple form intel10g 

    For the selftest we'll use a non-HW dependent setup:

vhost -> tee -> sink

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
    Nikolay Nikolaev committed Apr 23, 2014
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  7. Fix process_qemu_requests when QEMU goes down 

    vhost_user_receive will return 0 when the other end closed
the socket. In such case shut vhost_user operation.

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
    Nikolay Nikolaev committed Apr 23, 2014
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  8. Lower the rate of qemu process polling 

    Once vhost_user is UP it will have almos no communication so no
need to process it that often. Add a counter and use it to lower
the syscalls.

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
    Nikolay Nikolaev committed Apr 23, 2014
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  9. vhost_user add link_down_proc 

    Add a callback to execute when the other end shuts.

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
    Nikolay Nikolaev committed Apr 23, 2014
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  10. vhost_user set_vring_addr 

    used and avail will be pointers

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
    Nikolay Nikolaev committed Apr 23, 2014
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  11. Enhance virtio.h with more feature bits 

    These are not used now - but may be usefull in the future. Enumerate them
now for completeness.

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
    Nikolay Nikolaev committed Apr 23, 2014
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  12. Extract the virtio-net device code into a separate module 

    No features are supported in this implementation
This will result in having the following descriptor layout for both RX/TX:

 - virtio_header
 - data buffer

The buffer origin struct is extended to include the information needed
to access the virtio header.

no-IOMMU - translate all virtual addesses to physical

NOTE: This is slow! Using pread for each packet ...

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
    Nikolay Nikolaev committed Apr 23, 2014
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