Re: if_fxp and pause packets (or, I didn't need the network anyway)
On Wed, 11 Dec 2002 23:09:46 -0800 (PST), Nate Lawson [EMAIL PROTECTED] said: I've noticed this too with fxp. It only happens while in ddb and I thought it was my fault (I was debugging some networking problems). It happens when the NIC's receive queue fills up. When you're in DDB, the kernel is not answering network interrupts. -GAWollman To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-current in the body of the message
Re: if_fxp and pause packets (or, I didn't need the network anyway)
On Thu, Dec 12, 2002 at 12:04:13PM -0500, Garrett Wollman wrote: On Wed, 11 Dec 2002 23:09:46 -0800 (PST), Nate Lawson [EMAIL PROTECTED] said: I've noticed this too with fxp. It only happens while in ddb and I thought it was my fault (I was debugging some networking problems). It happens when the NIC's receive queue fills up. When you're in DDB, the kernel is not answering network interrupts. One of my machines has an fxp that likes to do this while the machine is still up -- perhaps it's just a manifestation of 5.0's higher interrupt latency. Kris msg48608/pgp0.pgp Description: PGP signature
if_fxp and pause packets (or, I didn't need the network anyway)
I'm having a recurring problem on a number of machines wherein the fxp interfaces on those machines will spew out pause packets in vast quantities while the system is in ddb, or following a shutdown. This doesn't happen with other operating systems, and only started happening at some point in the moderate past on FreeBSD. Peter Wemm suggested this might be a result of support introduced for flow control (which I didn't know existed for ethernet), but no matter what the reason, it's a bit of a disaster if you have any expectation of using your network segment or low-end switch while this is going on. The change is most likely 1.109, although I haven't built a kernel to test this as yet. Is there a fix for this -- for example, disabling support for this feature when in ddb or after shutting down, or in some other watchdog kind of situation? Just for reference, the card in the machine I've been having this probelm with most recently is: fxp0: Intel Pro 10/100B/100+ Ethernet port 0xdd80-0xddbf mem 0xff50-0xff5f,0xff8fe000-0xff8fefff irq 9 at device 1.0 on pci1 However, I'm having it with other related fxp cards. Robert N M Watson FreeBSD Core Team, TrustedBSD Projects [EMAIL PROTECTED] Network Associates Laboratories To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-current in the body of the message
Re: if_fxp and pause packets (or, I didn't need the network anyway)
On Wed, 11 Dec 2002, Robert Watson wrote: I'm having a recurring problem on a number of machines wherein the fxp interfaces on those machines will spew out pause packets in vast quantities while the system is in ddb, or following a shutdown. I've noticed this too with fxp. It only happens while in ddb and I thought it was my fault (I was debugging some networking problems). -Nate To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-current in the body of the message
