[IPFW] [DIVERT] IP header checksums - why calculate twice?

2013-08-28 Thread Dom F
[Copy of my post to FreeBSD Firewalls forum sent here by suggestion from moderator] I've been toying with using IPDIVERT to adjust values in an IPv4 header. When adjusting an incoming IP header, the man page for divert(4) says: Quote: Packets written as incoming and having incorrect checksums

Re: Intel 4-port ethernet adaptor link aggregation issue

2013-08-28 Thread Joe Moog
All: Thanks again to everybody for the responses and suggestions to our 4-port lagg issue. The solution (for those that may find the information of some value) was to set the value for kern.ipc.nmbclusters to a higher value than we had initially. Our previous tuning had this value set at 25600,

LOR @netipsec/key.c:2434

2013-08-28 Thread Maciej Milewski
I've observed the following LOR in my logs. Just after fresh start: lock order reversal: 1st 0x80865bb4 sptree (fast ipsec security policy database) @ /data/head-git/sys/netipsec/key.c:2434 2nd 0x80861554 rawcb (rawcb) @ /data/head-git/sys/netipsec/keysock.c:303 KDB: stack backtrace: db_trace

Network stack changes

2013-08-28 Thread Alexander V. Chernikov
Hello list! There is a lot constantly raising discussions related to networking stack performance/changes. I'll try to summarize current problems and possible solutions from my point of view. (Generally this is one problem: stack is slooow, but we need to know why an

Re: Network stack changes

2013-08-28 Thread Jack Vogel
Very interesting material Alexander, only had time to glance at it now, will look in more depth later, thanks! Jack On Wed, Aug 28, 2013 at 11:30 AM, Alexander V. Chernikov < melif...@yandex-team.ru> wrote: > Hello list! > > There is a lot constantly raising discussions related to networking

Re: Network stack changes

2013-08-28 Thread Andre Oppermann
On 28.08.2013 20:30, Alexander V. Chernikov wrote: Hello list! Hello Alexander, you sent quite a few things in the same email. I'll try to respond as much as I can right now. Later you should split it up to have more in-depth discussions on the individual parts. If you could make it to the

Re: Flow ID, LACP, and igb

2013-08-28 Thread Alan Somers
On Mon, Aug 26, 2013 at 2:40 PM, Andre Oppermann wrote: > On 26.08.2013 19:18, Justin T. Gibbs wrote: > >> Hi Net, >> >> I'm an infrequent traveler through the networking code and would >> appreciate some feedback on some proposed solutions to issues Spectra >> has seen with outbound LACP traffic

Re: Network stack changes

2013-08-28 Thread Slawa Olhovchenkov
On Thu, Aug 29, 2013 at 12:24:48AM +0200, Andre Oppermann wrote: > > .. > > while Intel DPDK claims 80MPPS (and 6windgate talks about 160 or so) on the > > same-class hardware and > > _userland_ forwarding. > > Those numbers sound a bit far out. Maybe if the packet isn't touched > or looked at

Re: Flow ID, LACP, and igb

2013-08-28 Thread Andre Oppermann
On 29.08.2013 01:42, Alan Somers wrote: On Mon, Aug 26, 2013 at 2:40 PM, Andre Oppermann wrote: On 26.08.2013 19:18, Justin T. Gibbs wrote: Hi Net, I'm an infrequent traveler through the networking code and would appreciate some feedback on some proposed solutions to issues Spectra has seen

Re: Network stack changes

2013-08-28 Thread Bryan Venteicher
- Original Message - > On 28.08.2013 20:30, Alexander V. Chernikov wrote: > > Hello list! > > Hello Alexander, > > you sent quite a few things in the same email. I'll try to respond > as much as I can right now. Later you should split it up to have > more in-depth discussions on the i