From: "David S. Miller" <davem@redhat.com>
To: mike_phillips@urscorp.com
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, linux-kernel@vger.kernel.org
Subject: Re: skb->truesize > sk->rcvbuf == Dropped packets
Date: Thu, 3 May 2001 16:49:59 -0700 (PDT) [thread overview]
Message-ID: <15089.61095.23597.82875@pizda.ninka.net> (raw)
In-Reply-To: <OFB60DB560.B716D10F-ON84256A41.007A7A73@urscorp.com>
In-Reply-To: <OFB60DB560.B716D10F-ON84256A41.007A7A73@urscorp.com>
mike_phillips@urscorp.com writes:
> Any suggestions on heuristics for this ?
> Say maybe copy if skb->len <= eth_max_mtu, skb->len <= skb->truesize * .5,
> or just copy the packets no matter what size.
Pick a percentage of "acceptable waste" (ie. ratio of truesize to
len).
We know that cutoff values ~200 work for ethernet, for example.
On the topic of these checks that drop the packets, just so there
there is no misunderstanding. We can't remove them else users
could consume memory in a basically uncontrolled manner.
Later,
David S. Miller
davem@redhat.com
next prev parent reply other threads:[~2001-05-03 23:50 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-03 23:24 mike_phillips
2001-05-03 23:49 ` David S. Miller [this message]
2001-05-13 18:34 ` kuznet
2001-05-14 3:29 ` David S. Miller
2001-05-14 16:16 ` kuznet
-- strict thread matches above, loose matches on Subject: below --
2001-05-14 15:08 mike_phillips
2001-05-03 22:29 mike_phillips
2001-05-03 22:51 ` Alan Cox
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