novice question: unable to kldunload netgraph.ko

2008-03-23 Thread Cheng Jin
Hi, I have started to play around with netgraph this weekend, and I am finding a very strange problem of not being able to kldunload any of the ng*.ko modules, as well as netgraph.ko itself. I tried on two systems running 5.4-RELEASE and 7.0-RELEASE, and the result is the same. On both syst

Intel 82572GI PCIe question

2007-09-07 Thread Cheng Jin
Hi, Has anyone had experience playing with the 82572GI PCIe cards under FreeBSD? We had bunch of cards from two vendors, a few server adapter cards, but most of them client adapter cards (http://www.intel.com/network/connectivity/products/prodbrf/pro1000_pt_desktop_adapter.pdf) They all had

em in 6.0 missing rx interrupts?

2006-04-17 Thread Cheng Jin
Hi, I am running into a problem with em driver possibly missing rx interrupts. I have the following setup Linux NFS server -- FreeBSD 6.0 ethernet bridge -- Linux NFS client and I run a test on the NFS client that repeatedly mounts an NFS directory, retrieves a file, and unmounts the dir. T

Re: 6.0 + intel em + mysterious gratuitous ARPs

2006-04-12 Thread Cheng Jin
Thanks for letting me know of the IPMI stuff. The board indeed has an IPMI module in it. My first brush with IPMI was quite awe inspiring. :) Cheng -- FAST powered network performance @626 395 8820 ___ freebsd-net@freebsd.org mailing list http://li

6.0 + intel em + mysterious gratuitous ARPs

2006-04-12 Thread Cheng Jin
Hi, I am running the 6.0 release on a supermicro 5015M-MF motherboard with intel's 82573v dual gigE. by default only one of the two ports are detected, although i was able to get both to work following the advice here http://www.freebsd.org/cgi/query-pr.cgi?pr=94281 the real puzzling thing is

5.4 ipfw doesnt like Mbit/s notation?

2006-01-30 Thread Cheng Jin
Hi, I was trying to configure Dummynet on a machine that also acts like a bridge and found something really odd. even though the ipfw man page says that one could specify the bw in either Kbit/s or Mbit/s. whenever i tried using Mbit/s, the bw was auotmatically set to 1 bit/s! Once i multiply

TCP receiving buffer

2002-09-23 Thread Cheng Jin
Hi all, I am having a hard time setting TCP receiving buffer space to be large than 512K using setsockopt under FreeBSD 4.6.2-RELEASE #0. I have tried playing with various sysctl variables, but I can't seem to break the 512K barrier. I looked at my kernel config file and didn't really find any