[dpdk-dev] [PATCH] Enhance code readability when dma_map in ifc/ifcvp_vdpa

[Wang, Xiao W]

Hi Jilei,

Please notice the patch format requirement, the subject of the patch should start with "vdpa/ifc: ".
You also need to keep it concise, around ~50 characters.
Refer " doc/guides/contributing/patches.rst" for more detail.

Back to this patch, it looks we can just change function ifcvf_dma_map(struct ifcvf_internal *internal, int do_map) to
ifcvf_dma_map(struct ifcvf_internal *internal, bool do_map), and use "true" or "false" when calling it.
This would align with vdpa_enable_vfio_intr(). In your next version patch, you can also change the "1", "0" parameter to
"true", "false" when calling vdpa_enable_vfio_intr().

BRs,
Xiao

> -----Original Message-----
> From: jilei chen <chenjilei at cmss.chinamobile.com>
> Sent: Monday, September 27, 2021 12:45 AM
> To: Wang, Xiao W <xiao.w.wang at intel.com>
> Cc: dev at dpdk.org
> Subject: [PATCH] Enhance code readability when dma_map in
> ifc/ifcvp_vdpa
> 
> Signed-off-by: jilei chen <chenjilei at cmss.chinamobile.com>
> ---
>  drivers/vdpa/ifc/ifcvf_vdpa.c | 10 ++++++----
>  1 file changed, 6 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/vdpa/ifc/ifcvf_vdpa.c b/drivers/vdpa/ifc/ifcvf_vdpa.c
> index 1dc813d0a3..c2bf26f2b7 100644
> --- a/drivers/vdpa/ifc/ifcvf_vdpa.c
> +++ b/drivers/vdpa/ifc/ifcvf_vdpa.c
> @@ -36,6 +36,8 @@ RTE_LOG_REGISTER(ifcvf_vdpa_logtype,
> pmd.vdpa.ifcvf, NOTICE);
> 
>  #define IFCVF_VDPA_MODE		"vdpa"
>  #define IFCVF_SW_FALLBACK_LM	"sw-live-migration"
> +#define IFCVF_MAP	1
> +#define IFCVF_UNMAP	0
> 
>  #define THREAD_NAME_LEN	16
> 
> @@ -538,7 +540,7 @@ update_datapath(struct ifcvf_internal *internal)
>  	if (!rte_atomic32_read(&internal->running) &&
>  	    (rte_atomic32_read(&internal->started) &&
>  	     rte_atomic32_read(&internal->dev_attached))) {
> -		ret = ifcvf_dma_map(internal, 1);
> +		ret = ifcvf_dma_map(internal, IFCVF_MAP);
>  		if (ret)
>  			goto err;
> 
> @@ -568,7 +570,7 @@ update_datapath(struct ifcvf_internal *internal)
>  		if (ret)
>  			goto err;
> 
> -		ret = ifcvf_dma_map(internal, 0);
> +		ret = ifcvf_dma_map(internal, IFCVF_UNMAP);
>  		if (ret)
>  			goto err;
> 
> @@ -875,7 +877,7 @@ ifcvf_sw_fallback_switchover(struct ifcvf_internal
> *internal)
>  unset_intr:
>  	vdpa_disable_vfio_intr(internal);
>  unmap:
> -	ifcvf_dma_map(internal, 0);
> +	ifcvf_dma_map(internal, IFCVF_UNMAP);
>  error:
>  	return -1;
>  }
> @@ -934,7 +936,7 @@ ifcvf_dev_close(int vid)
>  		vdpa_disable_vfio_intr(internal);
> 
>  		/* unset DMA map for guest memory */
> -		ifcvf_dma_map(internal, 0);
> +		ifcvf_dma_map(internal, IFCVF_UNMAP);
> 
>  		internal->sw_fallback_running = false;
>  	} else {
> --
> 2.12.2
> 
>