Re: [dpdk-dev] [PATCH v2 3/5] eventdev/rx_adapter:add per queue event buffer configure support

["Naga Harish K, S V" <s.v.naga.harish.k@intel.com>]

Hi Jerin,

> -----Original Message-----
> From: Jerin Jacob <jerinjacobk@gmail.com>
> Sent: Tuesday, September 21, 2021 9:55 PM
> To: Naga Harish K, S V <s.v.naga.harish.k@intel.com>
> Cc: Jerin Jacob <jerinj@marvell.com>; Jayatheerthan, Jay
> <jay.jayatheerthan@intel.com>; dpdk-dev <dev@dpdk.org>
> Subject: Re: [dpdk-dev] [PATCH v2 3/5] eventdev/rx_adapter:add per queue
> event buffer configure support
> 
> On Tue, Sep 21, 2021 at 2:52 PM Naga Harish K S V
> <s.v.naga.harish.k@intel.com> wrote:
> >
> > To configure per queue event buffer size, applications sets
> > ``rte_event_eth_rx_adapter_params::use_queue_event_buf`` flag as true
> > and is passed to ``rte_event_eth_rx_adapter_create_with_params``
> > api.
> >
> > The per queue event buffer size is populated  in
> > ``rte_event_eth_rx_adapter_queue_conf::event_buf_size`` and passed to
> > ``rte_event_eth_rx_adapter_queue_add`` api.
> >
> > Signed-off-by: Naga Harish K S V <s.v.naga.harish.k@intel.com>
> 
> Fix check-git-log issues
> 
> 
> Wrong headline format:
>         eventdev/rx_adapter:add per queue event buffer configure support
> Wrong headline case:
>                         "test/event: add unit test for event buffer size config api": api -->
> API Wrong headline case:
>                         "test/eventdev: add per rx queue event buffer
> unit": rx --> Rx
> Headline too long:
>         eventdev/rx_adapter: add support to configure event buffer size
>         eventdev/rx_adapter:add per queue event buffer configure support
> 
> Invalid patch(es) found - checked 5 patches

The check-git-log issues are resolved in v3 patch set.


> 
> 
> > ---
> >  .../prog_guide/event_ethernet_rx_adapter.rst  | 19 ++++++++++++-------
> >  lib/eventdev/rte_event_eth_rx_adapter.h       |  4 ++++
> >  2 files changed, 16 insertions(+), 7 deletions(-)
> >
> > diff --git a/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> > b/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> > index dd753613bd..333e6f8192 100644
> > --- a/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> > +++ b/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> > @@ -62,12 +62,14 @@ service function and needs to create an event port
> > for it. The callback is  expected to fill the ``struct
> > rte_event_eth_rx_adapter_conf structure``  passed to it.
> >
> > -If the application desires to control the event buffer size, it can
> > use the -``rte_event_eth_rx_adapter_create_with_params()`` api. The
> > event buffer size is -specified using ``struct
> rte_event_eth_rx_adapter_params::event_buf_size``.
> > -The function is passed the event device to be associated with the
> > adapter -and port configuration for the adapter to setup an event port
> > if the -adapter needs to use a service function.
> > +If the application desires to control the event buffer size at
> > +adapter level, it can use the
> > +``rte_event_eth_rx_adapter_create_with_params()`` api. The event
> buffer size is specified using ``struct rte_event_eth_rx_adapter_params::
> > +event_buf_size``. To configure the event buffer size at queue level,
> > +the boolean flag ``struct
> > +rte_event_eth_rx_adapter_params::use_queue_event_buf`` need to be
> set
> > +to true. The function is passed the event device to be associated
> > +with the adapter and port configuration for the adapter to setup an event
> port if the adapter needs to use a service function.
> >
> >  Adding Rx Queues to the Adapter Instance
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > @@ -79,7 +81,9 @@ parameter. Event information for packets from this
> > Rx queue is encoded in the  ``ev`` field of ``struct
> > rte_event_eth_rx_adapter_queue_conf``. The  servicing_weight member
> of
> > the struct  rte_event_eth_rx_adapter_queue_conf
> >  is the relative polling frequency of the Rx queue and is applicable
> > when the -adapter uses a service core function.
> > +adapter uses a service core function. The applications can configure
> > +queue event buffer size in ``struct
> > +rte_event_eth_rx_adapter_queue_conf::event_buf_size``
> > +parameter.
> >
> >  .. code-block:: c
> >
> > @@ -90,6 +94,7 @@ adapter uses a service core function.
> >          queue_config.rx_queue_flags = 0;
> >          queue_config.ev = ev;
> >          queue_config.servicing_weight = 1;
> > +       queue_config.event_buf_size = 1024;
> >
> >          err = rte_event_eth_rx_adapter_queue_add(id,
> >                                                  eth_dev_id, diff
> > --git a/lib/eventdev/rte_event_eth_rx_adapter.h
> > b/lib/eventdev/rte_event_eth_rx_adapter.h
> > index a7881097b4..b9f0563244 100644
> > --- a/lib/eventdev/rte_event_eth_rx_adapter.h
> > +++ b/lib/eventdev/rte_event_eth_rx_adapter.h
> > @@ -199,6 +199,8 @@ struct rte_event_eth_rx_adapter_queue_conf {
> >          * Valid when RTE_EVENT_ETH_RX_ADAPTER_QUEUE_EVENT_VECTOR
> flag is set in
> >          * @see rte_event_eth_rx_adapter_queue_conf::rx_queue_flags.
> >          */
> > +       uint16_t event_buf_size;
> > +       /**< event buffer size for this queue */
> >  };
> >
> >  /**
> > @@ -265,6 +267,8 @@ struct rte_event_eth_rx_adapter_params {
> >         /**< size of event buffer for the adapter.
> >          * the size is aligned to BATCH_SIZE and added (2 * BATCH_SIZE)
> >          */
> > +       bool use_queue_event_buf;
> > +       /**< flag to indicate that event buffer is separate for each
> > + queue */
> >  };
> >
> >  /**
> > --
> > 2.25.1
> >