netdev - Re: Bug#645589: linux-image-3.0.0-2-amd64: sky2 rx errors on 3.0, 2.6.32 works

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Message-ID: <1318908480.3340.79.camel@deadeye>
Date:	Tue, 18 Oct 2011 04:27:55 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>
Cc:	645589@...s.debian.org, Antti Salmela <asalmela@....fi>,
	netdev <netdev@...r.kernel.org>
Subject: Re: Bug#645589: linux-image-3.0.0-2-amd64: sky2 rx errors on 3.0,
 2.6.32 works

On Mon, 2011-10-17 at 10:40 +0300, Antti Salmela wrote:
> Package: linux-2.6
> Version: 3.0.0-5
> Severity: normal
> 
> 
> sky2 loses packets on 3.0 (-3 and -5) and 3.1-rc7, 2.6.32-38 and
> setting interface to promiscuous works.
> 
> [   60.118244] sky2 0000:02:00.0: eth0: rx error, status 0xb92100 length 185
> [   62.664370] sky2 0000:02:00.0: eth0: rx error, status 0x602100 length 96
> [   63.370051] sky2 0000:02:00.0: eth0: rx error, status 0x422100 length 66
> [   63.714672] sky2 0000:02:00.0: eth0: rx error, status 0x722100 length 114
> [   64.513458] device eth0 entered promiscuous mode

It looks like this is a bug in accounting of VLAN tags, though I don't
see what difference promiscuous mode should make.

The log messages show that status has the VLAN flag (bit 13) set and the
length field (bits 16:28) equals the length passed into sky2_receive(),
but that function expects the length field to be greater by VLAN_HLEN.

This device is:

[...]
> 02:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8053 PCI-E Gigabit Ethernet Controller [11ab:4362] (rev 19)
> 	Subsystem: ASUSTeK Computer Inc. Marvell 88E8053 Gigabit Ethernet controller PCIe (Asus) [1043:8142]
> 	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
> 	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
> 	Latency: 0, Cache Line Size: 16 bytes
> 	Interrupt: pin A routed to IRQ 43
> 	Region 0: Memory at cdefc000 (64-bit, non-prefetchable) [size=16K]
> 	Region 2: I/O ports at c800 [size=256]
> 	Expansion ROM at cdec0000 [disabled] [size=128K]
> 	Capabilities: <access denied>
> 	Kernel driver in use: sky2
[...]

Ben.

-- 
Ben Hutchings
No political challenge can be met by shopping. - George Monbiot

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