RE: [PATCH v5 03/10] Optimize the function of filter_send

["Zhang, Chen" <chen.zhang@intel.com>]

> -----Original Message-----
> From: Rao, Lei <lei.rao@intel.com>
> Sent: Thursday, April 1, 2021 3:47 PM
> To: Zhang, Chen <chen.zhang@intel.com>; lizhijian@cn.fujitsu.com;
> jasowang@redhat.com; quintela@redhat.com; dgilbert@redhat.com;
> pbonzini@redhat.com; lukasstraub2@web.de
> Cc: qemu-devel@nongnu.org; Rao, Lei <lei.rao@intel.com>
> Subject: [PATCH v5 03/10] Optimize the function of filter_send
> 
> From: "Rao, Lei" <lei.rao@intel.com>
> 
> The iov_size has been calculated in filter_send(). we can directly return the
> size.In this way, this is no need to repeat calculations in
> filter_redirector_receive_iov();
> 
> Signed-off-by: Lei Rao <lei.rao@intel.com>
> Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>

Reviewed-by: Zhang Chen <chen.zhang@intel.com>

> ---
>  net/filter-mirror.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/net/filter-mirror.c b/net/filter-mirror.c index f8e6500..f20240c
> 100644
> --- a/net/filter-mirror.c
> +++ b/net/filter-mirror.c
> @@ -88,7 +88,7 @@ static int filter_send(MirrorState *s,
>          goto err;
>      }
> 
> -    return 0;
> +    return size;
> 
>  err:
>      return ret < 0 ? ret : -EIO;
> @@ -159,7 +159,7 @@ static ssize_t filter_mirror_receive_iov(NetFilterState
> *nf,
>      int ret;
> 
>      ret = filter_send(s, iov, iovcnt);
> -    if (ret) {
> +    if (ret < 0) {
>          error_report("filter mirror send failed(%s)", strerror(-ret));
>      }
> 
> @@ -182,10 +182,10 @@ static ssize_t
> filter_redirector_receive_iov(NetFilterState *nf,
> 
>      if (qemu_chr_fe_backend_connected(&s->chr_out)) {
>          ret = filter_send(s, iov, iovcnt);
> -        if (ret) {
> +        if (ret < 0) {
>              error_report("filter redirector send failed(%s)", strerror(-ret));
>          }
> -        return iov_size(iov, iovcnt);
> +        return ret;
>      } else {
>          return 0;
>      }
> --
> 1.8.3.1