[v5] event/dlb2: fix max enqueue and dequeue cli override

This patch addresses an issue of enqueuing more than
max_enq_depth and not able to dequeuing events equal
to max_cq_depth in a single call of rte_event_enqueue_burst
and rte_event_dequeue_burst.

Apply fix for restricting enqueue of events to max_enq_depth
so that in a single rte_event_enqueue_burst() call at most
max_enq_depth events are enqueued.

Also set per port and domain history list sizes based on
cq_depth. This results in dequeuing correct number of
events as set by max_cq_depth.

Fixes: f3cad285bb88 ("event/dlb2: add infos get and configure")
Cc: stable@dpdk.org

Signed-off-by: Abdullah Sevincer <abdullah.sevincer@intel.com>
---
 drivers/event/dlb2/dlb2.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)
  

On Thu, Sep 29, 2022 at 12:14 AM Abdullah Sevincer
<abdullah.sevincer@intel.com> wrote:
>
> This patch addresses an issue of enqueuing more than
> max_enq_depth and not able to dequeuing events equal
> to max_cq_depth in a single call of rte_event_enqueue_burst
> and rte_event_dequeue_burst.
>
> Apply fix for restricting enqueue of events to max_enq_depth
> so that in a single rte_event_enqueue_burst() call at most
> max_enq_depth events are enqueued.
>
> Also set per port and domain history list sizes based on
> cq_depth. This results in dequeuing correct number of
> events as set by max_cq_depth.
>
> Fixes: f3cad285bb88 ("event/dlb2: add infos get and configure")
> Cc: stable@dpdk.org
>
> Signed-off-by: Abdullah Sevincer <abdullah.sevincer@intel.com>

Not sure what "cli" means in the subject.
Changed the subject as " event/dlb2: handle enqueuing more than max enq depth"

Applied to dpdk-next-net-eventdev/for-main. Thanks


> ---
>  drivers/event/dlb2/dlb2.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/event/dlb2/dlb2.c b/drivers/event/dlb2/dlb2.c
> index 759578378f..dbb8284135 100644
> --- a/drivers/event/dlb2/dlb2.c
> +++ b/drivers/event/dlb2/dlb2.c
> @@ -813,7 +813,7 @@ dlb2_hw_create_sched_domain(struct dlb2_eventdev *dlb2,
>                 cfg->num_ldb_queues;
>
>         cfg->num_hist_list_entries = resources_asked->num_ldb_ports *
> -               DLB2_NUM_HIST_LIST_ENTRIES_PER_LDB_PORT;
> +               evdev_dlb2_default_info.max_event_port_dequeue_depth;
>
>         if (device_version == DLB2_HW_V2_5) {
>                 DLB2_LOG_DBG("sched domain create - ldb_qs=%d, ldb_ports=%d, dir_ports=%d, atomic_inflights=%d, hist_list_entries=%d, credits=%d\n",
> @@ -1538,7 +1538,7 @@ dlb2_hw_create_ldb_port(struct dlb2_eventdev *dlb2,
>         cfg.cq_depth = rte_align32pow2(dequeue_depth);
>         cfg.cq_depth_threshold = 1;
>
> -       cfg.cq_history_list_size = DLB2_NUM_HIST_LIST_ENTRIES_PER_LDB_PORT;
> +       cfg.cq_history_list_size = cfg.cq_depth;
>
>         cfg.cos_id = ev_port->cos_id;
>         cfg.cos_strict = 0;/* best effots */
> @@ -2966,6 +2966,7 @@ __dlb2_event_enqueue_burst(void *event_port,
>         struct dlb2_port *qm_port = &ev_port->qm_port;
>         struct process_local_port_data *port_data;
>         int retries = ev_port->enq_retries;
> +       int num_tx;
>         int i;
>
>         RTE_ASSERT(ev_port->enq_configured);
> @@ -2974,8 +2975,8 @@ __dlb2_event_enqueue_burst(void *event_port,
>         i = 0;
>
>         port_data = &dlb2_port[qm_port->id][PORT_TYPE(qm_port)];
> -
> -       while (i < num) {
> +       num_tx = RTE_MIN(num, ev_port->conf.enqueue_depth);
> +       while (i < num_tx) {
>                 uint8_t sched_types[DLB2_NUM_QES_PER_CACHE_LINE];
>                 uint8_t queue_ids[DLB2_NUM_QES_PER_CACHE_LINE];
>                 int pop_offs = 0;
> --
> 2.25.1
>