netdev - Re: tg3 appears to be sick in 2.6.33

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Message-ID: <20100108013600.GA2711@core.coreip.homeip.net>
Date:	Thu, 7 Jan 2010 17:36:00 -0800
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Matt Carlson <mcarlson@...adcom.com>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: tg3 appears to be sick in 2.6.33

On Thu, Jan 07, 2010 at 04:14:54PM -0800, Dmitry Torokhov wrote:
> On Thu, Jan 07, 2010 at 03:53:09PM -0800, Matt Carlson wrote:
> > On Thu, Jan 07, 2010 at 02:45:43PM -0800, Dmitry Torokhov wrote:
> > > On Thursday 07 January 2010 02:24:44 pm Eric Dumazet wrote:
> > > > Le 07/01/2010 21:48, Matt Carlson a ?crit :
> > > > > Nothing jumps to mind.  Let me see if I can repro this here.
> > > > >
> > > > > On Thu, Jan 07, 2010 at 11:56:31AM -0800, Dmitry Torokhov wrote:
> > > > >> Hi,
> > > > >>
> > > > >> Ever since I moved post 2.6.32 tg3 seems to be very sick in my Latitude
> > > > >> D630, it discards most of the packages for some reason:
> > > > >>
> > > > >> [root@...r-d630 ~]# ethtool -S eth0 | grep rx_
> > > > >>      rx_octets: 35886
> > > > >>      rx_fragments: 0
> > > > >>      rx_ucast_packets: 9
> > > > >>      rx_mcast_packets: 93
> > > > >>      rx_bcast_packets: 237
> > > > >>      rx_fcs_errors: 0
> > > > >>      rx_align_errors: 0
> > > > >>      rx_xon_pause_rcvd: 0
> > > > >>      rx_xoff_pause_rcvd: 0
> > > > >>      rx_mac_ctrl_rcvd: 0
> > > > >>      rx_xoff_entered: 0
> > > > >>      rx_frame_too_long_errors: 0
> > > > >>      rx_jabbers: 0
> > > > >>      rx_undersize_packets: 0
> > > > >>      rx_in_length_errors: 0
> > > > >>      rx_out_length_errors: 0
> > > > >>      rx_64_or_less_octet_packets: 0
> > > > >>      rx_65_to_127_octet_packets: 0
> > > > >>      rx_128_to_255_octet_packets: 0
> > > > >>      rx_256_to_511_octet_packets: 0
> > > > >>      rx_512_to_1023_octet_packets: 0
> > > > >>      rx_1024_to_1522_octet_packets: 0
> > > > >>      rx_1523_to_2047_octet_packets: 0
> > > > >>      rx_2048_to_4095_octet_packets: 0
> > > > >>      rx_4096_to_8191_octet_packets: 0
> > > > >>      rx_8192_to_9022_octet_packets: 0
> > > > >>      rx_discards: 304
> > > > >>      rx_errors: 0
> > > > >>      rx_threshold_hit: 0
> > > > >>
> > > > >> The above on last night pull from Linux (so 2.6.33+).
> > > > >>
> > > > >> Everything works fine if I use wireless or another wired card (Realtek
> > > > >> in cardbus slot):
> > > > >>
> > > > >> [root@...r-d630 ~]# lspci | grep -ri net
> > > > >> 04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
> > > > >> RTL-8139/8139C/8139C+ (rev 10)
> > > > >> 09:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5755M
> > > > >> Gigabit Ethernet PCI Express (rev 02)
> > > > >> 0c:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG
> > > > >> [Golan] Network Connection (rev 02)
> > > > >>
> > > > >> [root@...r-d630 ~]# ethtool eth0
> > > > >> Settings for eth0:
> > > > >>         Supported ports: [ TP ]
> > > > >>         Supported link modes:   10baseT/Half 10baseT/Full
> > > > >>                                 100baseT/Half 100baseT/Full
> > > > >>                                 1000baseT/Half 1000baseT/Full
> > > > >>         Supports auto-negotiation: Yes
> > > > >>         Advertised link modes:  10baseT/Half 10baseT/Full
> > > > >>                                 100baseT/Half 100baseT/Full
> > > > >>                                 1000baseT/Half 1000baseT/Full
> > > > >>         Advertised auto-negotiation: Yes
> > > > >>         Speed: 1000Mb/s
> > > > >>         Duplex: Full
> > > > >>         Port: Twisted Pair
> > > > >>         PHYAD: 1
> > > > >>         Transceiver: internal
> > > > >>         Auto-negotiation: on
> > > > >>         Supports Wake-on: g
> > > > >>         Wake-on: g
> > > > >>         Current message level: 0x000000ff (255)
> > > > >>         Link detected: yes
> > > > >>
> > > > >> Any ideas? Thanks!
> > > > 
> > > > My laptop is a D630, and running 2.6.33-rc3 with no special problems on tg3
> > > >
> > > 
> > > This is wierd... It all works well with Fedora 12 kernel and .32 so hardware 
> > > is fine here. I think it also worked when I plugged it into my home router 
> > > (will try it again tonight). But in the office it just does not want to work. 
> > > It's like it just does not like the addresses that we use here...
> > 
> > Is the problem related to link speed?  I see that Eric was running at
> > 100Mbps.  Your ethtool output above shows that you are running at 1Gbps.
> > 
> 
> Indeed I have 100Mbps at home and 1Gb in the office.. I amy try playing
> with it some more if you want but that patch you sent seems to have
> fixed the issue for me...
> 
> Except that sice I started using tg3 in couple of hours the box locked
> up completely once and panicked twice; of course it happened in X so no
> traces whatsoever. Maybe a coincidence though, I am running with nvidia
> driver...
> 

No, something is definitely going on. I can work for a long time using
the Realtek card but if I switch to tg3 then pretty quickly network gets
stuck again and in a minute or so the box panics. Last time that
happened I switched to the text console and managed to captute an oops
(attached) but there is nothing really conclusive there...

Thanks.

-- 
Dmitry

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