[dpdk-dev] [PATCH] eventdev: add PCI probe named convenience function

[Jerin Jacob]

On Tue, Oct 13, 2020 at 12:29 AM Timothy McDaniel
<timothy.mcdaniel at intel.com> wrote:
>
> Add new internal wrapper function for use by pci drivers as a
> .probe function to attach to an event interface.  Same as
> rte_event_pmd_pci_probe, except the caller can specify the name.
>
> Updated rte_event_pmd_pci_probe so as to not duplicate
> code.
>
> Signed-off-by: Timothy McDaniel <timothy.mcdaniel at intel.com>

Latest patch is missing the updated version(v3) in patch commit[1]
[1]
http://patches.dpdk.org/patch/80394/

Also, it has apply issue[2] and builds issue in CI[3]. Please send the
v4 for fix.

[2]
[for-main]dell[dpdk-next-eventdev] $ git am -3
/tmp/r/eventdev-add-PCI-probe-named-convenience-function
Applying: eventdev: add PCI probe named convenience function
error: sha1 information is lacking or useless
(lib/librte_eventdev/rte_eventdev_pmd_pci.h).
error: could not build fake ancestor
Patch failed at 0001 eventdev: add PCI probe named convenience function
hint: Use 'git am --show-current-patch=diff' to see the failed patch
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".
[for-main]dell[dpdk-next-eventdev] $

[3]
http://mails.dpdk.org/archives/test-report/2020-October/158330.html



> ---
>  lib/librte_eventdev/rte_eventdev_pmd_pci.h   | 46 ++++++++++++++++++++--------
>  lib/librte_eventdev/rte_eventdev_version.map |  2 ++
>  2 files changed, 35 insertions(+), 13 deletions(-)
>
> diff --git a/lib/librte_eventdev/rte_eventdev_pmd_pci.h b/lib/librte_eventdev/rte_eventdev_pmd_pci.h
> index a3f9244..5f238bf 100644
> --- a/lib/librte_eventdev/rte_eventdev_pmd_pci.h
> +++ b/lib/librte_eventdev/rte_eventdev_pmd_pci.h
> @@ -32,28 +32,25 @@ typedef int (*eventdev_pmd_pci_callback_t)(struct rte_eventdev *dev);
>
>  /**
>   * @internal
> - * Wrapper for use by pci drivers as a .probe function to attach to a event
> - * interface.
> + * Wrapper for use by pci drivers as a .probe function to attach to an event
> + * interface.  Same as rte_event_pmd_pci_probe, except caller can specify
> + * the name.
>   */
> +__rte_experimental
>  static inline int
> -rte_event_pmd_pci_probe(struct rte_pci_driver *pci_drv,
> -                           struct rte_pci_device *pci_dev,
> -                           size_t private_data_size,
> -                           eventdev_pmd_pci_callback_t devinit)
> +rte_event_pmd_pci_probe_named(struct rte_pci_driver *pci_drv,
> +                             struct rte_pci_device *pci_dev,
> +                             size_t private_data_size,
> +                             eventdev_pmd_pci_callback_t devinit,
> +                             const char *name)
>  {
>         struct rte_eventdev *eventdev;
> -
> -       char eventdev_name[RTE_EVENTDEV_NAME_MAX_LEN];
> -
>         int retval;
>
>         if (devinit == NULL)
>                 return -EINVAL;
>
> -       rte_pci_device_name(&pci_dev->addr, eventdev_name,
> -                       sizeof(eventdev_name));
> -
> -       eventdev = rte_event_pmd_allocate(eventdev_name,
> +       eventdev = rte_event_pmd_allocate(name,
>                          pci_dev->device.numa_node);
>         if (eventdev == NULL)
>                 return -ENOMEM;
> @@ -90,6 +87,29 @@ rte_event_pmd_pci_probe(struct rte_pci_driver *pci_drv,
>
>  /**
>   * @internal
> + * Wrapper for use by pci drivers as a .probe function to attach to a event
> + * interface.
> + */
> +static inline int
> +rte_event_pmd_pci_probe(struct rte_pci_driver *pci_drv,
> +                           struct rte_pci_device *pci_dev,
> +                           size_t private_data_size,
> +                           eventdev_pmd_pci_callback_t devinit)
> +{
> +       char eventdev_name[RTE_EVENTDEV_NAME_MAX_LEN];
> +
> +       rte_pci_device_name(&pci_dev->addr, eventdev_name,
> +                       sizeof(eventdev_name));
> +
> +       return rte_event_pmd_pci_probe_named(pci_drv,
> +                                            pci_dev,
> +                                            private_data_size,
> +                                            devinit,
> +                                            eventdev_name);
> +}
> +
> +/**
> + * @internal
>   * Wrapper for use by pci drivers as a .remove function to detach a event
>   * interface.
>   */
> diff --git a/lib/librte_eventdev/rte_eventdev_version.map b/lib/librte_eventdev/rte_eventdev_version.map
> index 2846d04..8ae8420 100644
> --- a/lib/librte_eventdev/rte_eventdev_version.map
> +++ b/lib/librte_eventdev/rte_eventdev_version.map
> @@ -136,4 +136,6 @@ EXPERIMENTAL {
>
>         # changed in 20.11
>         __rte_eventdev_trace_port_setup;
> +       # added in 20.11
> +       rte_event_pmd_pci_probe_named;
>  };
> --
> 2.6.4
>