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

[Huawei Xie <huawei.xie@intel.com>]

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@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

-- 
1.8.1.4