[dpdk-dev] [PATCH RFC 0/4] Thread safe rte_vhost_enqueue_burst().

Ilya Maximets i.maximets at samsung.com
Fri Feb 19 07:32:39 CET 2016


Implementation of rte_vhost_enqueue_burst() based on lockless ring-buffer
algorithm and contains almost all to be thread-safe, but it's not.

This set adds required changes.

First patch in set is a standalone patch that fixes many times discussed
issue with barriers on different architectures.

Second and third adds fixes to make rte_vhost_enqueue_burst thread safe.
Last is a documentation fix.

Ilya Maximets (4):
  vhost: use SMP barriers instead of compiler ones.
  vhost: make buf vector for scatter RX local.
  vhost: avoid reordering of used->idx and last_used_idx updating.
  doc: add note about rte_vhost_enqueue_burst thread safety.

 .../prog_guide/thread_safety_dpdk_functions.rst    |  1 +
 lib/librte_vhost/rte_virtio_net.h                  |  1 -
 lib/librte_vhost/vhost_rxtx.c                      | 67 ++++++++++++----------
 3 files changed, 39 insertions(+), 30 deletions(-)

-- 
2.5.0



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