Messages in this thread | | | Subject | Re: Version 2.1.92 -> 2.1.101 Ethernet | Date | Tue, 19 May 1998 08:16:35 +0200 (MET DST) | From | (Rogier Wolff) |
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Alan Cox wrote: > > > If I ping a Linux machine with a packet length of the default (64 bytes?), > > it works okay. As I increase the size up to the normal ~1460 bytes, > > nothing gets through! The problems start at a packet size of about > > 400 bytes. Tcpdump on the source machines show packets being transmitted, > > Tcpdump on the destination machine shows no packets received. > > Check your cable quality is really cat5 and your hub is ok. Thats not a Linux > problem by any way I can figure it since we dont execute any different code > for long/short frames there.
Depends on the card. Some cards pre-allocate max-sized skb's and copy the contents over to a smaller sized skb if the packet lenght is below a threshold.
This would indicate something wrong witht the "leave in large preallocated skb" path. That's certainly odd.
Roger.
-- If it's there and you can see it, it's REAL |___R.E.Wolff@BitWizard.nl | If it's there and you can't see it, it's TRANSPARENT | Tel: +31-15-2137555 | If it's not there and you can see it, it's VIRTUAL |__FAX:_+31-15-2138217 | If it's not there and you can't see it, it's GONE! -- Roy Wilks, 1983 |_____|
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