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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
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