Re: [NOT VERY SAFE] [TCP]: Set initial_ssthresh default to zeroin Cubic and BIC.

[Stephen Hemminger]

On Mon, 15 Oct 2007 21:59:49 +0900
Komuro <komurojun-mbn@xxxxxxxxx> wrote:

> Dear shemminger
> 
> >In which case it is zero because that is the default value.
> 
> The default value of snd_ssthresh is 0x7fffffff, isn't it?
> 
> [linux/net/ipv4/tcp_ipv4.c]
> static int tcp_v4_init_sock(struct sock *sk)
> ...
>         tp->snd_ssthresh = 0x7fffffff;  /* Infinity */
> ...
> 
> Best Regards
> Komuro
> 
> 

Yes that value means that TCP stays in slow start until the first loss.
This makes TCP behave as expected in the RFC's.

-- 
Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx>
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