Messages in this thread | | | Date | Wed, 7 Nov 2007 23:53:48 +0200 | From | Heikki Orsila <> | Subject | Re: net: skge breakage on 2.6.24-rc1 |
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On Wed, Nov 07, 2007 at 11:46:21PM +0200, Heikki Orsila wrote: > After some bisecting, I found that net skge driver broke on > > commit 7fb7ac241162dc51ec0f7644d4a97b2855213c32 > > My network card is: > > 0000:00:0e.0 Ethernet controller: 3Com Corporation 3c940 10/100/1000Base-T [Marvell] (rev 12) > > Linux cheradenine 2.6.24-rc1-dirty #15 Wed Nov 7 23:39:28 EET 2007 x86_64 GNU/Linux
Sorry, forgot to say what the problem is. Doing
nc host port < /dev/zero
on a sending machine (not skge) to an skge machine that is receiving:
nc -l -p port >/dev/null
with ~60 MiB/s speed, causes the interface go malfunct. A slow transfer doesn't cause a problem.
Also, after some fiddling, I noticed that not changing the register write order on patch:
+ skge_write32(hw, RB_ADDR(q, RB_END), end); skge_write32(hw, RB_ADDR(q, RB_WP), start); skge_write32(hw, RB_ADDR(q, RB_RP), start); - skge_write32(hw, RB_ADDR(q, RB_END), end);
fixes the visible effect.. Possibly not the root cause of the problem, but changing the order back fixes networking here.
-- Heikki Orsila Barbie's law: heikki.orsila@iki.fi "Math is hard, let's go shopping!" http://www.iki.fi/shd - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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