Re: [dpdk-stable] [dpdk-dev] [PATCH v2 1/4] raw/ifpga/base: fix bug in IRQ functions

["Zhang, Qi Z" <qi.z.zhang@intel.com>]

> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Xu, Rosen
> Sent: Tuesday, September 29, 2020 9:42 AM
> To: Zhang, Tianfei <tianfei.zhang@intel.com>; dev@dpdk.org; Huang, Wei
> <wei.huang@intel.com>
> Cc: stable@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v2 1/4] raw/ifpga/base: fix bug in IRQ functions
> 
> Hi,
> 
> > -----Original Message-----
> > From: Zhang, Tianfei <tianfei.zhang@intel.com>
> > Sent: Monday, September 28, 2020 9:40
> > To: dev@dpdk.org; Xu, Rosen <rosen.xu@intel.com>; Huang, Wei
> > <wei.huang@intel.com>
> > Cc: stable@dpdk.org; Zhang, Tianfei <tianfei.zhang@intel.com>
> > Subject: [PATCH v2 1/4] raw/ifpga/base: fix bug in IRQ functions
> >
> > From: Wei Huang <wei.huang@intel.com>
> >
> > Using a pointer instead of using a structure and point to
> > ifpga_irq_handle[] in register and unregister interrupt functions.
> > Treat positive return value of ifpga_unregister_msix_irq() as successful.
> >
> > Fixes: e0a1aafe ("raw/ifpga: introduce IRQ functions")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Wei Huang <wei.huang@intel.com>
> > Signed-off-by: Tianfei zhang <tianfei.zhang@intel.com>
> > ---
> > v2: fix typo in commit log
> > ---
> >  drivers/raw/ifpga/ifpga_rawdev.c | 41
> > ++++++++++++++++++--------------
> >  1 file changed, 23 insertions(+), 18 deletions(-)
> >
> > diff --git a/drivers/raw/ifpga/ifpga_rawdev.c
> > b/drivers/raw/ifpga/ifpga_rawdev.c
> > index a50173264..374a7ff1d 100644
> > --- a/drivers/raw/ifpga/ifpga_rawdev.c
> > +++ b/drivers/raw/ifpga/ifpga_rawdev.c
> > @@ -1337,17 +1337,18 @@ int
> >  ifpga_unregister_msix_irq(enum ifpga_irq_type type,
> >  		int vec_start, rte_intr_callback_fn handler, void *arg)  {
> > -	struct rte_intr_handle intr_handle;
> > +	struct rte_intr_handle *intr_handle;
> >
> >  	if (type == IFPGA_FME_IRQ)
> > -		intr_handle = ifpga_irq_handle[0];
> > +		intr_handle = &ifpga_irq_handle[0];
> >  	else if (type == IFPGA_AFU_IRQ)
> > -		intr_handle = ifpga_irq_handle[vec_start + 1];
> > +		intr_handle = &ifpga_irq_handle[vec_start + 1];
> > +	else
> > +		return 0;
> >
> > -	rte_intr_efd_disable(&intr_handle);
> > +	rte_intr_efd_disable(intr_handle);
> >
> > -	return rte_intr_callback_unregister(&intr_handle,
> > -			handler, arg);
> > +	return rte_intr_callback_unregister(intr_handle, handler, arg);
> >  }
> >
> >  int
> > @@ -1357,7 +1358,7 @@ ifpga_register_msix_irq(struct rte_rawdev *dev,
> > int port_id,
> >  		void *arg)
> >  {
> >  	int ret;
> > -	struct rte_intr_handle intr_handle;
> > +	struct rte_intr_handle *intr_handle;
> >  	struct opae_adapter *adapter;
> >  	struct opae_manager *mgr;
> >  	struct opae_accelerator *acc;
> > @@ -1371,26 +1372,29 @@ ifpga_register_msix_irq(struct rte_rawdev
> > *dev, int port_id,
> >  		return -ENODEV;
> >
> >  	if (type == IFPGA_FME_IRQ) {
> > -		intr_handle = ifpga_irq_handle[0];
> > +		intr_handle = &ifpga_irq_handle[0];
> >  		count = 1;
> > -	} else if (type == IFPGA_AFU_IRQ)
> > -		intr_handle = ifpga_irq_handle[vec_start + 1];
> > +	} else if (type == IFPGA_AFU_IRQ) {
> > +		intr_handle = &ifpga_irq_handle[vec_start + 1];
> > +	} else {
> > +		return -EINVAL;
> > +	}
> >
> > -	intr_handle.type = RTE_INTR_HANDLE_VFIO_MSIX;
> > +	intr_handle->type = RTE_INTR_HANDLE_VFIO_MSIX;
> >
> > -	ret = rte_intr_efd_enable(&intr_handle, count);
> > +	ret = rte_intr_efd_enable(intr_handle, count);
> >  	if (ret)
> >  		return -ENODEV;
> >
> > -	intr_handle.fd = intr_handle.efds[0];
> > +	intr_handle->fd = intr_handle->efds[0];
> >
> >  	IFPGA_RAWDEV_PMD_DEBUG("register %s irq, vfio_fd=%d, fd=%d\n",
> > -			name, intr_handle.vfio_dev_fd,
> > -			intr_handle.fd);
> > +			name, intr_handle->vfio_dev_fd,
> > +			intr_handle->fd);
> >
> >  	if (type == IFPGA_FME_IRQ) {
> >  		struct fpga_fme_err_irq_set err_irq_set;
> > -		err_irq_set.evtfd = intr_handle.efds[0];
> > +		err_irq_set.evtfd = intr_handle->efds[0];
> >
> >  		ret = opae_manager_ifpga_set_err_irq(mgr, &err_irq_set);
> >  		if (ret)
> > @@ -1400,13 +1404,14 @@ ifpga_register_msix_irq(struct rte_rawdev
> > *dev, int port_id,
> >  		if (!acc)
> >  			return -EINVAL;
> >
> > -		ret = opae_acc_set_irq(acc, vec_start, count,
> > intr_handle.efds);
> > +		ret = opae_acc_set_irq(acc, vec_start, count,
> > +				intr_handle->efds);
> >  		if (ret)
> >  			return -EINVAL;
> >  	}
> >
> >  	/* register interrupt handler using DPDK API */
> > -	ret = rte_intr_callback_register(&intr_handle,
> > +	ret = rte_intr_callback_register(intr_handle,
> >  			handler, (void *)arg);
> >  	if (ret)
> >  		return -EINVAL;
> > --
> > 2.17.1
> 
> Acked-by: Rosen Xu <rosen.xu@intel.com>

Applied to dpdk-next-net-intel.

Thanks
Qi