eal/windows: add stub for rte_intr_callback_register

  interrupt callback register is not implemented in Windows.
Add stub with -ENOTSUP return value and export the function.

Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
---
 lib/librte_eal/rte_eal_exports.def      | 1 +
 lib/librte_eal/windows/eal_interrupts.c | 9 +++++++++
 2 files changed, 10 insertions(+)
  

On Thu, 26 Nov 2020 10:06:39 +0200, Tal Shnaiderman wrote:
> interrupt callback register is not implemented in Windows.
> Add stub with -ENOTSUP return value and export the function.
> 
> Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
> ---
>  lib/librte_eal/rte_eal_exports.def      | 1 +
>  lib/librte_eal/windows/eal_interrupts.c | 9 +++++++++
>  2 files changed, 10 insertions(+)
> 

Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
  

Hi Tal,

On 11/26/2020 12:06 AM, Tal Shnaiderman wrote:
> interrupt callback register is not implemented in Windows.
> Add stub with -ENOTSUP return value and export the function.
>
> Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
> ---
>   lib/librte_eal/rte_eal_exports.def      | 1 +
>   lib/librte_eal/windows/eal_interrupts.c | 9 +++++++++
>   2 files changed, 10 insertions(+)
>
> diff --git a/lib/librte_eal/rte_eal_exports.def b/lib/librte_eal/rte_eal_exports.def
> index 6a6be1cfa6..08cf25ea01 100644
> --- a/lib/librte_eal/rte_eal_exports.def
> +++ b/lib/librte_eal/rte_eal_exports.def
> @@ -63,6 +63,7 @@ EXPORTS
>   	rte_get_tsc_hz
>   	rte_hexdump
>   	rte_hypervisor_get
> +	rte_intr_callback_register
>   	rte_intr_rx_ctl
>   	rte_lcore_count
>   	rte_lcore_has_role
> diff --git a/lib/librte_eal/windows/eal_interrupts.c b/lib/librte_eal/windows/eal_interrupts.c
> index 6c64a48f34..fea338d705 100644
> --- a/lib/librte_eal/windows/eal_interrupts.c
> +++ b/lib/librte_eal/windows/eal_interrupts.c
> @@ -105,3 +105,12 @@ eal_intr_thread_schedule(void (*func)(void *arg), void *arg)
>   
>   	return 0;
>   }
> +
> +int
> +rte_intr_callback_register(
> +			__rte_unused const struct rte_intr_handle *intr_handle,
> +			__rte_unused rte_intr_callback_fn cb,
> +			__rte_unused void *cb_arg)
> +{
> +	return -ENOTSUP;
> +}

We have also included the same code as it is required to compile i40e PMD.

Will remove it from our patch once this code is merged.

Thanks,
  

On 11/26/2020 12:06 AM, Tal Shnaiderman wrote:
> interrupt callback register is not implemented in Windows.
> Add stub with -ENOTSUP return value and export the function.
>
> Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
> ---
Acked-by: Pallavi Kadam <pallavi.kadam@intel.com>
  

05/12/2020 01:56, Kadam, Pallavi:
> Hi Tal,
> 
> On 11/26/2020 12:06 AM, Tal Shnaiderman wrote:
> > interrupt callback register is not implemented in Windows.
> > Add stub with -ENOTSUP return value and export the function.
> >
> > Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
> > ---
> >   lib/librte_eal/rte_eal_exports.def      | 1 +
> >   lib/librte_eal/windows/eal_interrupts.c | 9 +++++++++
> >   2 files changed, 10 insertions(+)
> >
> > diff --git a/lib/librte_eal/rte_eal_exports.def b/lib/librte_eal/rte_eal_exports.def
> > index 6a6be1cfa6..08cf25ea01 100644
> > --- a/lib/librte_eal/rte_eal_exports.def
> > +++ b/lib/librte_eal/rte_eal_exports.def
> > @@ -63,6 +63,7 @@ EXPORTS
> >   	rte_get_tsc_hz
> >   	rte_hexdump
> >   	rte_hypervisor_get
> > +	rte_intr_callback_register
> >   	rte_intr_rx_ctl
> >   	rte_lcore_count
> >   	rte_lcore_has_role
> > diff --git a/lib/librte_eal/windows/eal_interrupts.c b/lib/librte_eal/windows/eal_interrupts.c
> > index 6c64a48f34..fea338d705 100644
> > --- a/lib/librte_eal/windows/eal_interrupts.c
> > +++ b/lib/librte_eal/windows/eal_interrupts.c
> > @@ -105,3 +105,12 @@ eal_intr_thread_schedule(void (*func)(void *arg), void *arg)
> >   
> >   	return 0;
> >   }
> > +
> > +int
> > +rte_intr_callback_register(
> > +			__rte_unused const struct rte_intr_handle *intr_handle,
> > +			__rte_unused rte_intr_callback_fn cb,
> > +			__rte_unused void *cb_arg)
> > +{
> > +	return -ENOTSUP;
> > +}
> 
> We have also included the same code as it is required to compile i40e PMD.
> 
> Will remove it from our patch once this code is merged.

It would make more sense to have a patch which introduces all
intr-related stubs, including epoll ones.

There are already 3 patches around, none of them is complete:
	https://patches.dpdk.org/patch/84389/
	https://patches.dpdk.org/patch/84567/
	https://patches.dpdk.org/patch/84771/