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[v6,0/2] vhost: introduce DMA vchannel unconfiguration

Message ID 20221018152221.86341-1-xuan.ding@intel.com (mailing list archive)
Headers

Message

Ding, Xuan Oct. 18, 2022, 3:22 p.m. UTC 
  From: Xuan Ding <xuan.ding@intel.com>

This patchset introduces a new API rte_vhost_async_dma_unconfigure()
to help user to manually free DMA vchannels finished to use.

v6:
* Move DMA unconfiguration to the end due to DMA devices maybe reused
  after destroy_device().
* Refine the doc to claim the DMA device should not be used in vhost
  after unconfiguration.

v5:
* Use mutex instead of spinlock.
* Improve code readability.

v4:
* Rebase to 22.11 rc1.
* Fix the usage of 'dma_ref_count' to make sure the specified DMA device
  is not used by any vhost ports before unconfiguration.

v3:
* Rebase to latest DPDK.
* Refine some descriptions in the doc.
* Fix one bug in the vhost example.

v2:
* Add spinlock protection.
* Fix a memory leak issue.
* Refine the doc.

Xuan Ding (2):
  vhost: introduce DMA vchannel unconfiguration
  examples/vhost: unconfigure DMA vchannel

 doc/guides/prog_guide/vhost_lib.rst    |  7 +++
 doc/guides/rel_notes/release_22_11.rst |  5 ++
 examples/vhost/main.c                  |  8 +++
 lib/vhost/rte_vhost_async.h            | 20 ++++++++
 lib/vhost/version.map                  |  3 ++
 lib/vhost/vhost.c                      | 69 ++++++++++++++++++++++++--
 6 files changed, 107 insertions(+), 5 deletions(-)