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Bing Zhao 23233fd63a net/mlx5: fix loopback for Direct Verbs queue 
In the past, all the queues and other hardware objects were created
through Verbs interface. Currently, most of the objects creation are
migrated to Devx interface by default, including queues. Only when
the DV is disabled by device arg or eswitch is enabled, all or some
of the objects are created through Verbs interface.

When using Devx interface to create queues, the kernel driver
behavior is different from the case using Verbs. The Tx loopback
cannot work properly even if the Tx and Rx queues are configured
with loopback attribute. To fix the support self loopback for Tx, a
Verbs dummy queue pair needs to be created to trigger the kernel to
enable the global loopback capability.

This is only required when TIR is created for Rx and loopback is
needed. Only CQ and QP are needed for this case, no WQ(RQ) needs to
be created.

Bugzilla ID: 645
Fixes: 6deb19e1b2 ("net/mlx5: separate Rx queue object creations")
Cc: stable@dpdk.org

Signed-off-by: Bing Zhao <bingz@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
2021-05-18 10:30:45 +02:00
.ci build: update minimum required Meson version 2021-04-16 18:51:51 +02:00
.github/workflows ci: bump ABI reference version 2021-04-16 14:09:03 +02:00
app test/crypto: fix build with GCC 11 2021-05-19 14:54:29 +02:00
buildtools build: check symbol maps in developer mode 2021-05-19 12:51:41 +02:00
config config/arm: add Qualcomm Centriq 2400 2021-05-19 12:08:42 +02:00
devtools build: check symbol maps in developer mode 2021-05-19 12:51:41 +02:00
doc doc: fix release notes for QAT compression PMD 2021-05-19 14:54:29 +02:00
drivers net/mlx5: fix loopback for Direct Verbs queue 2021-05-18 10:30:45 +02:00
examples examples/l3fwd-power: fix empty poll thresholds 2021-05-19 08:41:20 +02:00
kernel lib: remove librte_ prefix from directory names 2021-04-21 14:04:09 +02:00
lib vhost: restore IOTLB mempool allocation 2021-05-18 09:54:44 +02:00
license lib: remove librte_ prefix from directory names 2021-04-21 14:04:09 +02:00
usertools usertools: add Intel DLB device binding 2021-05-19 11:49:48 +02:00
.editorconfig doc: add Meson coding style to contributors guide 2021-04-21 14:04:09 +02:00
.gitattributes improve git diff 2016-11-13 15:25:12 +01:00
.gitignore doc: add flow API features tables 2021-05-18 19:06:56 +02:00
.travis.yml ci: bump ABI reference version 2021-04-16 14:09:03 +02:00
ABI_VERSION version: 21.05-rc0 2021-02-15 11:08:19 +01:00
MAINTAINERS devtools: check flow API doc tables 2021-05-18 19:06:56 +02:00
Makefile build: create dummy Makefile 2020-09-07 23:51:57 +02:00
meson_options.txt lib: allow disabling optional libraries 2021-04-21 14:17:29 +02:00
meson.build lib: remove librte_ prefix from directory names 2021-04-21 14:04:09 +02:00
README license: introduce SPDX identifiers 2018-01-04 22:41:38 +01:00
VERSION version: 21.05-rc3 2021-05-12 22:40:07 +02:00

README 

DPDK is a set of libraries and drivers for fast packet processing.
It supports many processor architectures and both FreeBSD and Linux.

The DPDK uses the Open Source BSD-3-Clause license for the core libraries
and drivers. The kernel components are GPL-2.0 licensed.

Please check the doc directory for release notes,
API documentation, and sample application information.

For questions and usage discussions, subscribe to: users@dpdk.org
Report bugs and issues to the development mailing list: dev@dpdk.org