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From: Piotrek D <regis44@gmail.com>
To: Jarek Poplawski <jarkao2@gmail.com>
Cc: Stephen Hemminger <shemminger@vyatta.com>, netdev@vger.kernel.org
Subject: Re: changing the qdisc class speed rate
Date: Sat, 30 May 2009 10:19:36 +0200	[thread overview]
Message-ID: <620d582f0905300119y5e4b6962s40e0e276074720b6@mail.gmail.com> (raw)
In-Reply-To: <4A2046D1.3050402@gmail.com>

Thanks, this was exactly what I was looking for :)
After multiplying  all of the values in the rtab->data array I have
been able to change the traffic rate for that queue.

Piotrek D.


> /* Length to Time (L2T) lookup in a qdisc_rate_table, to determine how
>   long it will take to send a packet given its size.
>  */
> static inline u32 qdisc_l2t(struct qdisc_rate_table* rtab, unsigned int pktlen)
> {
>        int slot = pktlen + rtab->rate.cell_align + rtab->rate.overhead;
>        if (slot < 0)
>                slot = 0;
>        slot >>= rtab->rate.cell_log;
>        if (slot > 255)
>                return (rtab->data[255]*(slot >> 8) + rtab->data[slot & 0xFF]);
>        return rtab->data[slot];
> }
>
> This function controls rates and these rtab values matter here.
>
> Jarek P.
>

>> --

      reply	other threads:[~2009-05-30  8:19 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-28  5:12 changing the qdisc class speed rate Piotr Duszyński
2009-05-28  5:21 ` Stephen Hemminger
2009-05-29 19:03   ` Piotrek D
2009-05-29 20:34     ` Jarek Poplawski
2009-05-30  8:19       ` Piotrek D [this message]

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