[dpdk-dev] [PATCH v2 00/11] qemu vhost-user support

Xie, Huawei huawei.xie at intel.com
Thu Feb 12 06:26:39 CET 2015


Sorry, forget to add --in-reply-to and add v2 changes.

v2 changes:
* vhost-cuse and vhost-user have their own set_mem_table message handler.
* rework and refine mutex operation in fd management to avoid race condition
* increase listen backlog
* use memset to fix initialization compiler errors reported by haifeng lin
* code style fixes
On 2/12/2015 1:08 PM, Huawei Xie wrote:
> vhost-user supports passing vring information to a seperate vhost enabled
> user space process, normally a user space vSwitch, through unix domain socket.
>
> In previous DPDK version, we implement a user space character device driver
> vhost-cuse in user space DPDK process. vring information is passed to the
> cuse driver through ioctl call, including eventfds for interrupt injection and
> host notification. A kernel module is developed to copy these fds from
> qemu process into our process. We also need some trick to map guest memory.
> (TODO: kickfd/callfd is reversed which causes confusion)
>
> known issue in vhost-user implementation in QEMU, reported by haifeng.lin at huawei.com
> * QEMU doesn't send correct memory region information with multiple numa node configuration
>         http://lists.gnu.org/archive/html/qemu-devel/2014-12/msg01454.html
>
> Thanks Tetsuya for reporting the issue that "FD_ISSET would crash when receive -1
> as fd on Ubuntu 14.04".
>
> Huawei Xie (11):
>  enable VIRTIO_NET_F_CTRL_RX
>  create vhost_cuse directory and move vhost-net-cdev.c into vhost_cuse
>  rename vhost-net-cdev.h to vhost-net.h
>  move fd copying(from qemu process into vhost process) to eventfd_copy.c
>  copy host_memory_map from virtio-net.c to a new file virtio-net-cdev.c
>  make host_memory_map a more generic function.
>  implement cuse_set_memory_table in virtio-net-cdev.c
>  add select based event driven processing
>  vhost user support
>  support dev->ifname
>  support calling rte_vhost_driver_register after rte_vhost_driver_session_start
>
>  lib/librte_vhost/Makefile                     |   8 +-
>  lib/librte_vhost/rte_virtio_net.h             |   5 +-
>  lib/librte_vhost/vhost-net-cdev.c             | 389 --------------------
>  lib/librte_vhost/vhost-net-cdev.h             | 113 ------
>  lib/librte_vhost/vhost-net.h                  | 118 +++++++
>  lib/librte_vhost/vhost_cuse/eventfd_copy.c    |  88 +++++
>  lib/librte_vhost/vhost_cuse/eventfd_copy.h    |  39 ++
>  lib/librte_vhost/vhost_cuse/vhost-net-cdev.c  | 417 ++++++++++++++++++++++
>  lib/librte_vhost/vhost_cuse/virtio-net-cdev.c | 423 ++++++++++++++++++++++
>  lib/librte_vhost/vhost_cuse/virtio-net-cdev.h |  48 +++
>  lib/librte_vhost/vhost_rxtx.c                 |   2 +-
>  lib/librte_vhost/vhost_user/fd_man.c          | 258 ++++++++++++++
>  lib/librte_vhost/vhost_user/fd_man.h          |  67 ++++
>  lib/librte_vhost/vhost_user/vhost-net-user.c  | 472 +++++++++++++++++++++++++
>  lib/librte_vhost/vhost_user/vhost-net-user.h  | 106 ++++++
>  lib/librte_vhost/vhost_user/virtio-net-user.c | 314 ++++++++++++++++
>  lib/librte_vhost/vhost_user/virtio-net-user.h |  49 +++
>  lib/librte_vhost/virtio-net.c                 | 491 ++------------------------
>  lib/librte_vhost/virtio-net.h                 |  43 +++
>  19 files changed, 2491 insertions(+), 959 deletions(-)
>  delete mode 100644 lib/librte_vhost/vhost-net-cdev.c
>  delete mode 100644 lib/librte_vhost/vhost-net-cdev.h
>  create mode 100644 lib/librte_vhost/vhost-net.h
>  create mode 100644 lib/librte_vhost/vhost_cuse/eventfd_copy.c
>  create mode 100644 lib/librte_vhost/vhost_cuse/eventfd_copy.h
>  create mode 100644 lib/librte_vhost/vhost_cuse/vhost-net-cdev.c
>  create mode 100644 lib/librte_vhost/vhost_cuse/virtio-net-cdev.c
>  create mode 100644 lib/librte_vhost/vhost_cuse/virtio-net-cdev.h
>  create mode 100644 lib/librte_vhost/vhost_user/fd_man.c
>  create mode 100644 lib/librte_vhost/vhost_user/fd_man.h
>  create mode 100644 lib/librte_vhost/vhost_user/vhost-net-user.c
>  create mode 100644 lib/librte_vhost/vhost_user/vhost-net-user.h
>  create mode 100644 lib/librte_vhost/vhost_user/virtio-net-user.c
>  create mode 100644 lib/librte_vhost/vhost_user/virtio-net-user.h
>  create mode 100644 lib/librte_vhost/virtio-net.h
>



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