Re: Odd congestion window behaviour [ was: Draft email to freebsd-net ]

2007-07-16 Thread James Healy
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 > I.e. where we keep past connection state and use that > as a reference for the initial cwnd. I asked Mark about > this in the past.. and he said that his paper was > mis-interpreted and this is incorrect behavior. If you > have no connections up to a

Re: soekris/sis tx checksum problems

2007-07-16 Thread David Cornejo
it was the stock tree On 7/16/07, Bjoern A. Zeeb <[EMAIL PROTECTED]> wrote: On Mon, 16 Jul 2007, David Cornejo wrote: > I eventually reinstalled the OS from a recent snapshot then updated it > to the latest CURRENT and it works fine now :-( Hmm I am using CURRENT from today and I culd see the

Re: soekris/sis tx checksum problems

2007-07-16 Thread Bjoern A. Zeeb
On Mon, 16 Jul 2007, David Cornejo wrote: I eventually reinstalled the OS from a recent snapshot then updated it to the latest CURRENT and it works fine now :-( Hmm I am using CURRENT from today and I culd see the issue. I set sysctl net.inet.udp.checksum=0 to get things working temporary. I

Re: soekris/sis tx checksum problems

2007-07-16 Thread David Cornejo
I eventually reinstalled the OS from a recent snapshot then updated it to the latest CURRENT and it works fine now :-( dave c On 7/16/07, Bjoern A. Zeeb <[EMAIL PROTECTED]> wrote: On Wed, 20 Jun 2007, David Cornejo wrote: Hi, > the remote machine sees bad checksums - netstat indicates that >

Re: 6.2 mtu now limits size of incomming packet

2007-07-16 Thread Wes Peters
On 7/16/07, Sten Daniel Soersdal <[EMAIL PROTECTED]> wrote: I guess it wouldn't hurt for the operating system to accept larger frames, as long as only the correctly sized frames are transmitted. There are alot of people, including myself, that assume a host can't receive a frame that is larger

Re: soekris/sis tx checksum problems

2007-07-16 Thread Bjoern A. Zeeb
On Wed, 20 Jun 2007, David Cornejo wrote: Hi, the remote machine sees bad checksums - netstat indicates that received packets are being discarded because of bad checksums. -txcsum has no effect, I don't think (at least mine) sis support offloading checksums - the only if flags seem to be VLAN_

Re: 6.2 mtu now limits size of incomming packet

2007-07-16 Thread Stephen Clark
Wes Peters wrote: On 7/16/07, Sten Daniel Soersdal <[EMAIL PROTECTED]> wrote: I guess it wouldn't hurt for the operating system to accept larger frames, as long as only the correctly sized frames are transmitted. There are alot of people, including myself, that assume a host can't receive a

Re: 6.2 mtu now limits size of incomming packet

2007-07-16 Thread Sten Daniel Soersdal
Stephen Clark wrote: Sten Daniel Soersdal wrote: Stephen Clark wrote: Sten Daniel Soersdal wrote: Stephen Clark wrote: Hello, Did something change in 6.2? If my mtu size on rl0 is 1280 it won't accept a larger incomming packet. kernel: rl0: discard oversize frame (ether type

Re: kern/112612: [lo] Traffic via additional lo(4) interface shows up on lo0 in bpf(4)

2007-07-16 Thread Cristian KLEIN
The following reply was made to PR kern/112612; it has been noted by GNATS. From: Cristian KLEIN <[EMAIL PROTECTED]> To: [EMAIL PROTECTED], [EMAIL PROTECTED] Cc: Subject: Re: kern/112612: [lo] Traffic via additional lo(4) interface shows up on lo0 in bpf(4) Date: Mon, 16 Jul 2007 17:18:33 +030

Current problem reports assigned to you

2007-07-16 Thread FreeBSD bugmaster
Current FreeBSD problem reports Critical problems Serious problems S Tracker Resp. Description a kern/38554 netchanging interface ipaddress doesn't seem to work s kern/39937 netipstealth

Re: Draft email to freebsd-net

2007-07-16 Thread Randall Stewart
James Healy wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 We've recently been doing some TCP congestion control research, and have written a small logging module for 6.2 that outputs the cwnd of a tcp flow to a log file. The logging module is called SIFTR and is available on our website:

Re: Odd congestion window behaviour [ was: Draft email to freebsd-net ]

2007-07-16 Thread Randall Stewart
James Healy wrote: This behaviour seems a little odd to us - can anyone shed some light on it? Our assumption is that the use of the hostcache is designed to increase performance where appropriate by seeding the initial cwnd based on past experience. For this section of code to return a cwnd th