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Date: Mon, 27 Jun 2016 21:49:28 +0200
From: Samuel Thibault <samuel.thibault@gnu.org>
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Subject: Re: [Qemu-devel] [PATCH] slirp: Remove superfluous memset() calls
 from the TFTP code
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To: Thomas Huth <thuth@redhat.com>
Cc: qemu-devel@nongnu.org, Jan Kiszka <jan.kiszka@siemens.com>, qemu-trivial@nongnu.org

Thomas Huth, on Mon 27 Jun 2016 12:41:36 +0200, wrote:
> Commit fad7fb9ccd8013ea03  ("Add IPv6 support to the TFTP code")
> refactored some common code for preparing the mbuf into a new
> function called tftp_prep_mbuf_data(). One part of this common
> code is to do a "memset(m->m_data, 0, m->m_size);" for the related
> buffer first. However, at two spots, the memset() was not removed
> from the calling function, so it currently done twice in these code
> paths. Thus let's delete these superfluous memsets in the calling
> functions now.
> 
> Signed-off-by: Thomas Huth <thuth@redhat.com>

Thanks!

Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>

> ---
>  slirp/tftp.c | 4 ----
>  1 file changed, 4 deletions(-)
> 
> diff --git a/slirp/tftp.c b/slirp/tftp.c
> index 12b5ff6..3673402 100644
> --- a/slirp/tftp.c
> +++ b/slirp/tftp.c
> @@ -208,8 +208,6 @@ static void tftp_send_error(struct tftp_session *spt,
>      goto out;
>    }
>  
> -  memset(m->m_data, 0, m->m_size);
> -
>    tp = tftp_prep_mbuf_data(spt, m);
>  
>    tp->tp_op = htons(TFTP_ERROR);
> @@ -237,8 +235,6 @@ static void tftp_send_next_block(struct tftp_session *spt,
>      return;
>    }
>  
> -  memset(m->m_data, 0, m->m_size);
> -
>    tp = tftp_prep_mbuf_data(spt, m);
>  
>    tp->tp_op = htons(TFTP_DATA);
> -- 
> 1.8.3.1
> 

-- 
Samuel
<macavity> bash: ls: Computer bought the farm
<macavity> THAT frightens ppl! :P
<macavity> id rather see: "bash: ls: Initialization of googol(AWAX)
        disengaged in HYPER32/64 mode due to faulty page request at
        AX:12A34F84B"
<macavity> at least that would give me the feeling that the
        *programmers* knows what is going on :P
(lovely Hurd...)