linux-kernel - [BUG] Sky2 driver in 2.6.22-rc5-git1-cfs-v17

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Date:	Thu, 21 Jun 2007 22:51:32 +0200
From:	Ian Kumlien <pomac@...or.com>
To:	Linux-kernel@...r.kernel.org
Cc:	shemminger@...ux-foundation.org
Subject: [BUG] Sky2 driver in 2.6.22-rc5-git1-cfs-v17

Hi, 

recently have started to see this in my dmesg:

NETDEV WATCHDOG: eth0: transmit timed out
sky2 eth0: tx timeout
sky2 eth0: transmit ring 449 .. 408 report=449 done=449
sky2 eth0: disabling interface
sky2 eth0: enabling interface
sky2 eth0: ram buffer 48K
sky2 eth0: Link is up at 1000 Mbps, full duplex, flow control rx

I'm not using MSI since it seems to have caused problems in the past.

I run with a 9k mtu

sky2 eth0: transmit ring 18 .. 489 report=18 done=18
---- I assume ring max is 512 (ie 1-512) since:
	Ring parameters for eth0:
	Current hardware settings:
	RX:             168
	RX Mini:        0
	RX Jumbo:       0
	TX:             511
	
	And 489 + 41 - 18 = 512

sky2 eth0: transmit ring 197 .. 156 report=197 done=197
sky2 eth0: transmit ring 480 .. 439 report=480 done=480
sky2 eth0: transmit ring 413 .. 372 report=413 done=413
sky2 eth0: transmit ring 320 .. 279 report=320 done=320

Else, they are all off by 41.

Is this a known bug?
Comments? ideas?

Offload parameters for eth0:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp segmentation offload: on
udp fragmentation offload: off

-- 
Ian Kumlien <pomac (a) vapor ! com> -- http://pomac.netswarm.net

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