Every time we introduce a new feature to vhost, we are likely
to break ABI. Moreover, some cleanups (such as the one from Ilya
to remove vec_buf from vhost_virtqueue struct) also break ABI.
This patch set is meant to resolve above issue ultimately, by
hiding virtio_net structure (as well as few others) internaly,
and export the virtio_net dev strut to applications by a number,
vid, like the way kernel exposes an fd to user space.
Back to the patch set, the first part of this set makes some
changes to vhost example, vhost-pmd and vhost, bit by bit, to
remove the dependence to "virtio_net" struct. And then do the
final change to make the current APIs to adapt to using "vid".
After that, "vrtio_net_device_ops" is the only left open struct
that an application can acces, thefeore, it's the only place
that might introduce potential ABI breakage in future for
extension. Hence, I made few more (5) space reservation, to
make sure we will not break ABI for a long time, and hopefuly,
forever.
The last bit of this patch set is some cleanups, including the
one from Ilya.
Note that this refactoring breaks the tep_termination example.
Well, it's just another copy of the original messy vhost example,
and I have no interest to cleanup it again. Therefore, I might
consider to remove that example later, and add the vxlan bits
into vhost example.
Few more TODOs: update release note, update lib version, update
version.map
Thanks.
--yliu
---
Ilya Maximets (1):
vhost: make buf vector for scatter Rx local
Yuanhan Liu (15):
vhost: declare backend with int type
vhost: set/reset dev flags internally
vhost: declare device_fh as int
example/vhost: make a copy of virtio device id
vhost: rename device_fh to vid
vhost: get device by vid only
vhost: move vhost_device_ctx to cuse
vhost: query pmd internal by vid
vhost: add few more functions
vhost: export vid as the only interface to applications
vhost: hide internal structs/macros/functions
vhost: remove unnecessary fields
vhost: remove virtio-net.h
vhost: reserve few more space for future extension
vhost: per device vhost_hlen
drivers/net/vhost/rte_eth_vhost.c | 86 ++++-------
examples/vhost/main.c | 126 ++++++++-------
examples/vhost/main.h | 1 +
lib/librte_vhost/rte_virtio_net.h | 197 ++++++------------------
lib/librte_vhost/vhost-net.h | 195 +++++++++++++++++++----
lib/librte_vhost/vhost_cuse/vhost-net-cdev.c | 83 +++++-----
lib/librte_vhost/vhost_cuse/virtio-net-cdev.c | 30 ++--
lib/librte_vhost/vhost_cuse/virtio-net-cdev.h | 12 +-
lib/librte_vhost/vhost_rxtx.c | 133 ++++++++--------
lib/librte_vhost/vhost_user/vhost-net-user.c | 53 +++----
lib/librte_vhost/vhost_user/virtio-net-user.c | 64 ++++----
lib/librte_vhost/vhost_user/virtio-net-user.h | 18 +--
lib/librte_vhost/virtio-net.c | 213 ++++++++++++++++----------
lib/librte_vhost/virtio-net.h | 43 ------
14 files changed, 644 insertions(+), 610 deletions(-)
delete mode 100644 lib/librte_vhost/virtio-net.h
--
1.9.0
