lkml.org 
[lkml]   [2004]   [Jul]   [7]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateWed, 7 Jul 2004 15:47:30 -0400 (EDT)
FromJohn Heffner <>
SubjectRe: [PATCH] fix tcp_default_win_scale.
On Tue, 6 Jul 2004, Stephen Hemminger wrote:

> +/* Default window scaling based on the size of the maximum window  */
> +static inline __u8 tcp_default_win_scale(void)
> +{
> +	int b = ffs(sysctl_tcp_rmem[2]);
> +	return (b < 17) ? 0 : b-16;
> +}


I would actually change this to be:

static inline __u8 tcp_select_win_scale(void)
{
	int b = ffs(tcp_win_from_space(max(sysctl_tcp_rmem[2], sysctl_rmem_max)));
	b = (b < 17) ? 0 : b-16;
	return max(b, 14);
}
Then you can also get rid of all the window scale calculation code in
tcp_select_initial_window().

  -John

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:04    [from the cache]
©2003-2008