[dpdk-dev] [PATCH v9 00/15] Vhost: add support to packed ring layout
Maxime Coquelin
maxime.coquelin at redhat.com
Fri Jul 6 09:07:07 CEST 2018
This series is a handover from Jen's "[PATCH v4 00/20]
implement packed virtqueues", which only implements the
vhost side. Virtio PMD implementation will follow in a
next series.
The series applies on top of previous reworks I posted
during this cycle that merges mergeable and non-mergeable
receive paths, and refactors transmit path to re-use
vector buffers.
I haven't run performance tests for now as the Virtio PMD
side isn't ready.
The series has been tested with Tiwei's series implementing
packed ring support to Kernel's virtio-net driver, and
with Wei series implementing the Qemu side.
To test it, I have used testpmd on host side with a vhost
vdev and a tap vdev forwarding to each other. Transferts
of big random files have been done in both ways with
integrity verified.
Tests have been run with Rx mrg ON/OFF and events suppression
ON/OFF.
Tests have also been run with legacy split ring layout to
ensure no regression have been introduced.
Changes since v8:
=================
- Fix indents (Tiwei)
- Rename struct vring_desc_packed to vring_packed_desc (Tiwei)
Changes since v7:
=================
- Align structs and defines naming with Kernel header (Tiwei)
- Fix event based notifications (Tiwei)
- Fix Clang build issues caused by unused symbols (Tiwei)
Changes since v6:
=================
- Various style cleanups (Tiwei, Jason)
- Simplify event based notification (Jason)
- Build support with future kernels (Tiwei)
- Prevent buffer vectors overflow in map_one_desc (Tiwei)
Changes since v5:
=================
- Remove duplicated VHOST_USER_F_PROTOCOL_FEATURES definition (Tiwei)
- Fix vq_is_ready (Maxime)
- Fix local used index overflow in flush_shadow_used_ring_packed (Tiwei)
- Make desc_is_avail() a bool (Tiwei)
- Improve desc_is_avail() logic (Tiwei)
- Remove split rings addr NULL assignment in the right patch (Tiwei)
- Make buffer id a uint16_t (Tiwei)
Jens Freimann (2):
vhost: add virtio packed virtqueue defines
vhost: add helpers for packed virtqueues
Maxime Coquelin (12):
vhost: clear shadow used table index at flush time
vhost: make indirect desc table copy desc type agnostic
vhost: clear batch copy index at copy time
vhost: extract split ring handling from Rx and Tx functions
vhost: append shadow used ring function names with split
vhost: add shadow used ring support for packed rings
vhost: create descriptor mapping function
vhost: add vector filling support for packed ring
vhost: add Rx support for packed ring
vhost: add Tx support for packed ring
vhost: add notification for packed ring
vhost: advertize packed ring layout support
Yuanhan Liu (1):
vhost: vring address setup for packed queues
lib/librte_vhost/vhost.c | 115 ++++++-
lib/librte_vhost/vhost.h | 130 ++++++-
lib/librte_vhost/vhost_user.c | 127 +++++--
lib/librte_vhost/virtio_net.c | 776 +++++++++++++++++++++++++++++++++---------
4 files changed, 939 insertions(+), 209 deletions(-)
--
2.14.4
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