Date: Thu, 02 Feb 2006 06:07:05 -0700 From: Scott Long <scottl@samsco.org> To: Michal Mertl <mime@traveller.cz> Cc: freebsd-current@freebsd.org Subject: Re: em(4) stops forwarding Message-ID: <43E203F9.9060307@samsco.org> In-Reply-To: <1138875351.1807.12.camel@genius.i.cz> References: <1138813174.1358.34.camel@genius.i.cz> <43E0FE09.50804@samsco.org> <1138875351.1807.12.camel@genius.i.cz>
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Michal Mertl wrote: > Scott Long wrote: > >>Michal Mertl wrote: >> >>>Hello, >>> >>>I've been running CURRENT for long time and never experienced problem >>>with the built-in em(4) card before. Recently (I first noticed it on Jan >>>24) the card has stopped working several times. Nothing gets into the >>>log file. Carrier is still detected properly but no data is exchanged. >>>Ifconfig up/down doesn't help but kldunload/load does. When I run >>>tcpdump I don't see any packet coming in but I see some outgoing. >>> >>>Can someone suggest what to look at when it happens the next time? I >>>have DDB compiled in. I will try to sniff the wire using another machine >>>next time to see if the card sends out anything. >>> >>>The command 'pciconf -lv' says about the card this: >>>em0@pci2:1:0: class=0x020000 card=0x05491014 chip=0x101e8086 rev=0x03 >>>hdr=0x00 >>> vendor = 'Intel Corporation' >>> device = '82540EP Gigabit Ethernet Controller (Mobile)' >>> class = network >>> subclass = ethernet >>> >>>The dmesg: >>>em0: <Intel(R) PRO/1000 Network Connection Version - 3.2.18> port >>>0x8000-0x803f mem 0xc0220000-0xc023ffff,0xc0200000-0xc020ffff irq 11 at >>>device 1.0 on pci2 >>>em0: Ethernet address: 00:0d:60:cd:ae:e2 >>>em0: [FAST] >>> >>>The interrupt is shared since the machine is a notebook. I don't know if >>>it was just a coincidence but I think that it happened at the same time >>>as my USB mouse stopped working - the USB controller is on the same irq. >>> >>>Michal >>> >> >>What is sharing the interrupt? > > > vgapci0, ipw0, ehci0, uhci0-2. I don't think vgapci0 and ipw0 are really > using the interrupt when I use em0. > > Ouch. For now, edit /sys/dev/em/if_em.c and add the following line to the top of the file: #define NO_EM_FASTINTR Also, does your kernel config include the apic device? Scott
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