[dpdk-dev] [PATCH 00/12] qemu vhost-user support

Huawei Xie huawei.xie at intel.com
Fri Jan 30 07:36:15 CET 2015


vhost-user supports passing vring information to a seperate vhost enabled
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 informations are passed to the
driver through ioctl call, including eventfds for interrupt injection and
host notification. We need to develop a kernel module to copy that fd from
qemu 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 (12):
  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 more generic
  split set_memory_table into two parts
  add select based event driven processing
  free memory when receive new set_memory_table message
  vhost user support
  support dev->ifname in vhost-user
  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                  | 121 +++++++
 lib/librte_vhost/vhost_cuse/eventfd_copy.c    |  89 +++++
 lib/librte_vhost/vhost_cuse/eventfd_copy.h    |  40 +++
 lib/librte_vhost/vhost_cuse/vhost-net-cdev.c  | 417 +++++++++++++++++++++++
 lib/librte_vhost/vhost_cuse/virtio-net-cdev.c | 401 ++++++++++++++++++++++
 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          | 234 +++++++++++++
 lib/librte_vhost/vhost_user/fd_man.h          |  66 ++++
 lib/librte_vhost/vhost_user/vhost-net-user.c  | 469 ++++++++++++++++++++++++++
 lib/librte_vhost/vhost_user/vhost-net-user.h  | 106 ++++++
 lib/librte_vhost/vhost_user/virtio-net-user.c | 322 ++++++++++++++++++
 lib/librte_vhost/vhost_user/virtio-net-user.h |  49 +++
 lib/librte_vhost/virtio-net.c                 | 455 +++----------------------
 lib/librte_vhost/virtio-net.h                 |  43 +++
 19 files changed, 2460 insertions(+), 917 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

-- 
1.8.1.4



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