[dpdk-dev] event/sw: fix credit return on invalid queue id
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Commit Message
This patch returns a credit when an rte_event is
enqueued with an invalid queue_id. Previously a
credit was leaked from the system.
Note that the eventdev instance does not attempt
to free any resources that the rte_event owns. As
a result, resources owned by the rte_event are leaked.
Eg. if the rte_event represents an rte_mbuf, the mbuf
will not be freed, and causes a leak from the mempool.
Fixes: 656af9180014 ("event/sw: add worker core functions")
Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
---
drivers/event/sw/sw_evdev_worker.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
Comments
On 18/4/2017 10:58 AM, Harry van Haaren wrote:
> This patch returns a credit when an rte_event is
> enqueued with an invalid queue_id. Previously a
> credit was leaked from the system.
>
> Note that the eventdev instance does not attempt
> to free any resources that the rte_event owns. As
> a result, resources owned by the rte_event are leaked.
> Eg. if the rte_event represents an rte_mbuf, the mbuf
> will not be freed, and causes a leak from the mempool.
>
> Fixes: 656af9180014 ("event/sw: add worker core functions")
>
> Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
> ---
> drivers/event/sw/sw_evdev_worker.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/event/sw/sw_evdev_worker.c b/drivers/event/sw/sw_evdev_worker.c
> index b9b6f8d..9cb6bef 100644
> --- a/drivers/event/sw/sw_evdev_worker.c
> +++ b/drivers/event/sw/sw_evdev_worker.c
> @@ -105,9 +105,12 @@ sw_event_enqueue_burst(void *port, const struct rte_event ev[], uint16_t num)
> */
> if ((new_ops[i] & QE_FLAG_COMPLETE) && outstanding)
> p->outstanding_releases--;
> - /* Branch to avoid touching p->stats except error case */
> - if (unlikely(invalid_qid))
> +
> + /* error case: branch to avoid touching p->stats */
> + if (unlikely(invalid_qid)) {
> p->stats.rx_dropped++;
> + p->inflight_credits++;
> + }
> }
>
> /* returns number of events actually enqueued */
Acked-by: David Hunt <david.hunt@intel.com>
18/04/2017 12:11, Hunt, David:
> On 18/4/2017 10:58 AM, Harry van Haaren wrote:
> > This patch returns a credit when an rte_event is
> > enqueued with an invalid queue_id. Previously a
> > credit was leaked from the system.
> >
> > Note that the eventdev instance does not attempt
> > to free any resources that the rte_event owns. As
> > a result, resources owned by the rte_event are leaked.
> > Eg. if the rte_event represents an rte_mbuf, the mbuf
> > will not be freed, and causes a leak from the mempool.
> >
> > Fixes: 656af9180014 ("event/sw: add worker core functions")
> >
> > Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
>
> Acked-by: David Hunt <david.hunt@intel.com>
Applied, thanks
@@ -105,9 +105,12 @@ sw_event_enqueue_burst(void *port, const struct rte_event ev[], uint16_t num)
*/
if ((new_ops[i] & QE_FLAG_COMPLETE) && outstanding)
p->outstanding_releases--;
- /* Branch to avoid touching p->stats except error case */
- if (unlikely(invalid_qid))
+
+ /* error case: branch to avoid touching p->stats */
+ if (unlikely(invalid_qid)) {
p->stats.rx_dropped++;
+ p->inflight_credits++;
+ }
}
/* returns number of events actually enqueued */