[dpdk-stable] 回复: [PATCH] lib/ring: fix the bug of HTS/RTS bulk enqueue

[Feifei Wang]

> -----邮件原件-----
> 发件人: Ananyev, Konstantin <konstantin.ananyev at intel.com>
> 发送时间: 2020年6月10日 18:17
> 收件人: Feifei Wang <Feifei.Wang2 at arm.com>; Honnappa Nagarahalli
> <Honnappa.Nagarahalli at arm.com>
> 抄送: dev at dpdk.org; nd <nd at arm.com>; stable at dpdk.org
> 主题: RE: [PATCH] lib/ring: fix the bug of HTS/RTS bulk enqueue
>
>
> > Directly call "_rte_ring_do_enqueue_elem" function can result in the
> > process skips the "switch" order and cannot call the APIs of RTS and
> > HTS mode in "rte_ring_enqueue_bulk_elem" function.
> >
> > To fix it, remove the unnecessary function and make
> > "_rte_ring_do_enqueue_elem" consistent with
> "_rte_ring_do_dequeue_elem".
> >
> > Fixes: e6ba4731c0f3 ("ring: introduce RTS ring mode")
> > Cc: stable at dpdk.org
> >
> > Signed-off-by: Feifei Wang <feifei.wang2 at arm.com>
> > Reviewed-by: Ruifeng Wang <ruifeng.wang at arm.com>
> > ---
> >  lib/librte_ring/rte_ring_elem.h | 3 ---
> >  1 file changed, 3 deletions(-)
> >
> > diff --git a/lib/librte_ring/rte_ring_elem.h
> > b/lib/librte_ring/rte_ring_elem.h index a5a4c46f9..469aee7da 100644
> > --- a/lib/librte_ring/rte_ring_elem.h
> > +++ b/lib/librte_ring/rte_ring_elem.h
> > @@ -578,9 +578,6 @@ static __rte_always_inline unsigned int
> > rte_ring_enqueue_bulk_elem(struct rte_ring *r, const void *obj_table,
> >  unsigned int esize, unsigned int n, unsigned int *free_space)
> {
> > -return __rte_ring_do_enqueue_elem(r, obj_table, esize, n,
> > -RTE_RING_QUEUE_FIXED, r->prod.sync_type,
> free_space);
> > -
> >  switch (r->prod.sync_type) {
> >  case RTE_RING_SYNC_MT:
> >  return rte_ring_mp_enqueue_bulk_elem(r, obj_table, esize,
> n,
> > --
>
> Ouch, that was a nasty one from me.
> Thanks for catching and fixing.
That's all right. It is admirable to integrate RTS mode. And I think I need a lot of things to learn from you.
> Acked-by: Konstantin Ananyev <konstantin.ananyev at intel.com>
>
> > 2.17.1

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