The integration of this feature in OVS has been postponed following feedback how the current API forced the complexity on the application side. There is no contributor working on making those changes.
The feature has no other identified opensource consumer. On the other hand, this feature has been left unattended for some years now while the "normal" datapath is actively maintained. It is highly likely the async datapath code, which never underwent a stabilisation phase, is riddled with bugs. Given the craziness around finding security bugs with AI, and since the vhost library is a good target, I propose to drop this feature and reduce the library attack surface. There is one complication with the vhost_crypto and some external applications that seemed to rely on the async flag to track and populate guest pages, so a new flag replacing async is added by this series. -- David Marchand Changes since RFC: - maintained guest pages population in a new flag (vhost_crypto/SPDK), - removed remaining helpers which had sync_ in their names, David Marchand (5): vhost: decouple guest pages population from async datapath examples/vhost: stop using async datapath vhost: drop async datapath vhost: rename packed layout helpers for batches vhost: simplify some descriptor handling doc/guides/prog_guide/vhost_lib.rst | 152 +- doc/guides/rel_notes/release_26_11.rst | 20 + examples/vhost/Makefile | 2 - examples/vhost/main.c | 436 +-- examples/vhost/main.h | 21 +- examples/vhost/meson.build | 2 - examples/vhost_crypto/Makefile | 1 - examples/vhost_crypto/main.c | 2 +- examples/vhost_crypto/meson.build | 1 - lib/vhost/meson.build | 3 +- lib/vhost/rte_vhost.h | 2 +- lib/vhost/rte_vhost_async.h | 293 --- lib/vhost/socket.c | 20 +- lib/vhost/vhost.c | 434 --- lib/vhost/vhost.h | 116 +- lib/vhost/vhost_user.c | 115 +- lib/vhost/virtio_net.c | 3343 +++++------------------- 17 files changed, 736 insertions(+), 4227 deletions(-) delete mode 100644 lib/vhost/rte_vhost_async.h -- 2.54.0
