From: Neema <neema.network@gmail.com>
To: Harsh <hanemade@gmail.com>
Cc: linux-net@vger.kernel.org, netdev@oss.sgi.com
Subject: Re: help in using eth_change_mtu
Date: Tue, 25 Jan 2005 09:16:17 +0530 [thread overview]
Message-ID: <41F5C109.7060801@gmail.com> (raw)
In-Reply-To: <cfc9593605012400595e529682@mail.gmail.com>
Hi,
What ever u may send,the maximum size of the packet in ethernet
should be 1514bytes, that includes ethernet header (And also minimum is
82bytes).
I think u are using old libnet version. That function sets the MTU with
the given value if neither exceeded max and nor minimum.
HTH,
Neema
Harsh wrote:
>Hello,
> If some extra information is required to be sent with each
>packet then does that require to change Ethernet MTU 1500 to
>1500-(Bytes in extra info) or its ok with 1500 value of MTU? While
>checking source code of net_init.c in drivers/net dir i found one
>function eth_change_mtu. I want to know does that helps? why its given
>there in source code?
>regards,
>Harsh.
>
>static int eth_change_mtu(struct net_device *dev, int new_mtu)
> {
> if ((new_mtu < 68) || (new_mtu > 1500))
> return -EINVAL;
> dev->mtu = new_mtu;
> return 0;
> }
>-
>To unsubscribe from this list: send the line "unsubscribe linux-net" in
>the body of a message to majordomo@vger.kernel.org
>More majordomo info at http://vger.kernel.org/majordomo-info.html
>
>
>
--
Thanks & Regards,
Neema
next prev parent reply other threads:[~2005-01-25 3:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-24 8:59 help in using eth_change_mtu Harsh
2005-01-25 3:46 ` Neema [this message]
2005-01-25 6:20 ` Harsh
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