[dpdk-dev] [PATCH v7 10/10] vhost: add vhost-user-blk example which support inflight

Tiwei Bie tiwei.bie at intel.com
Wed Sep 25 16:45:38 CEST 2019


On Fri, Sep 20, 2019 at 08:01:02PM +0800, Jin Yu wrote:
> A vhost-user-blk example that support inflight feature. It uses the
> new APIs that introduced in the first patch, so It can show how there

s/It/it/
s/there/these/

> APIs work to support inflight feature.
> 
> Signed-off-by: Jin Yu <jin.yu at intel.com>
> ---
> V1 - add the case.
> V2 - add the rte_vhost prefix.
> V3 - add packed ring support
> ---
>  examples/vhost_blk/Makefile           |   67 ++
>  examples/vhost_blk/blk.c              |  125 +++
>  examples/vhost_blk/blk_spec.h         |   95 ++
>  examples/vhost_blk/meson.build        |   20 +
>  examples/vhost_blk/vhost_blk.c        | 1313 +++++++++++++++++++++++++
>  examples/vhost_blk/vhost_blk.h        |  116 +++
>  examples/vhost_blk/vhost_blk_compat.c |  195 ++++
>  7 files changed, 1931 insertions(+)

I met some build issues when trying this example.

examples/vhost_blk/vhost_blk.c: In function ‘descriptor_get_next_packed’:
examples/vhost_blk/vhost_blk.c:71:21: error: invalid use of undefined type ‘struct vring_packed_desc’
  if (vq->desc_packed[*idx % vq->size].flags & VIRTQ_DESC_F_NEXT) {
                     ^
examples/vhost_blk/vhost_blk.c:71:21: error: dereferencing pointer to incomplete type ‘struct vring_packed_desc’
examples/vhost_blk/vhost_blk.c:73:26: error: invalid use of undefined type ‘struct vring_packed_desc’
   return &vq->desc_packed[*idx % vq->size];
                          ^
examples/vhost_blk/vhost_blk.c: In function ‘inflight_submit_completion_packed’:
examples/vhost_blk/vhost_blk.c:165:2: warning: ‘rte_vhost_set_last_inflight_io_packed’ is deprecated: Symbol is not yet part of stable ABI [-Wdeprecated-declarations]
  ret = rte_vhost_set_last_inflight_io_packed(ctrlr->bdev->vid, q_idx,
  ^~~
In file included from examples/vhost_blk/vhost_blk.c:17:0:
x86_64-native-linuxapp-gcc/include/rte_vhost.h:810:1: note: declared here
 rte_vhost_set_last_inflight_io_packed(int vid,
 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                         ^
...


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