On Fri, Feb 02, 2024 at 03:11:36PM +0100, Laurent Vivier wrote:

Even more than the previous patch, this doesn't really seem like
"buffer management" to me.  I'd say rather that this is extracting
maximum mss calculation into a helper.

> Signed-off-by: Laurent Vivier <lvivier@redhat.com>
> ---
>  tcp.c | 13 +++++++++----
>  1 file changed, 9 insertions(+), 4 deletions(-)
> 
> diff --git a/tcp.c b/tcp.c
> index 20ad8a4e5271..cdbceed65033 100644
> --- a/tcp.c
> +++ b/tcp.c
> @@ -1813,6 +1813,14 @@ int tcp_conn_new_sock(const struct ctx *c, sa_family_t af)
>  	return s;
>  }
>  

Function comment.

> +static uint16_t tcp_buf_conn_tap_mss(const struct tcp_tap_conn *conn)
> +{
> +	if (CONN_V4(conn))
> +		return MSS4;
> +
> +	return MSS6;
> +}
> +
>  /**
>   * tcp_conn_tap_mss() - Get MSS value advertised by tap/guest
>   * @conn:	Connection pointer
> @@ -1832,10 +1840,7 @@ static uint16_t tcp_conn_tap_mss(const struct tcp_tap_conn *conn,
>  	else
>  		mss = ret;
>  
> -	if (CONN_V4(conn))
> -		mss = MIN(MSS4, mss);
> -	else
> -		mss = MIN(MSS6, mss);
> +	mss = MIN(tcp_buf_conn_tap_mss(conn), mss);
>  
>  	return MIN(mss, USHRT_MAX);
>  }

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson