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From: "Miguel Angel Alvarez" <ma.alvarez@ziv•es>
To: <linuxppc-embedded@ozlabs•org>
Cc: tnt@246tNt•com
Subject: mpc52xx: Correct calculation of FEC RX errors???
Date: Wed, 18 Jul 2007 13:39:47 +0200	[thread overview]
Message-ID: <469DFC03.9080201@ziv.es> (raw)

Hi

We are showing figures of more than 4 billion error frames in our=20
ethernet interfaces. We have tested that the problem is in a=20
substraction (the number of errors decrements with the number of =
frames).

So... looking in the fec driver (fec.c) for the calculations we have=20
seen that the number of multicast packets is added to the number of=20
correct frames in order to get the frame errors...

But the interesting thing is that we have checked that this calculation=20
is something that we have added with a patch by Grzegorz Bernacki in=20
this list.

So... The funny thing is... Why a patch that solves the problem for=20
Grzegorz produces "the same problem" for us?

And... by the way... I have seen IEEE802.3, and when they talk about=20
aFramesReceivedOK (which I suppose is the ieee_r_frame_ok in the=20
driver), and they do not say a word about not including multicast=20
packets in it...

Any comment will be appreciate.

Miguel =C1ngel =C1lvarez
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next             reply	other threads:[~2007-07-18 11:51 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-18 11:39 Miguel Angel Alvarez [this message]
2007-07-18 11:45 ` mpc52xx: Correct calculation of FEC RX errors??? Sylvain Munaut

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