search for: psad

Hi, I''d like to use psad from www.cipherdyne.com that analyze iptables log messages on my firewall-shorewall. It complains to incorrectly configured iptables when starting. This is the message : -------------------------------------------------------------------------------------------------- ** The INPUT chain in the ip...

Just installed psad and am testing it. This morning I awoke to an email saying: [-] You may just need to add a default logging rule to the /sbin/ip6tables ''filter'' ''INPUT'' chain on hydra. For more information, see the file "FW_HELP" in the psad sources directory...

> On Fri, 2003-09-19 at 07:10, Tom Eastep wrote: > > On Fri, 2003-09-19 at 06:59, Tom Eastep wrote: > > > On Fri, 2003-09-19 at 06:52, Petr Novák wrote: > > > > > > > Is there a way for shorewall to be comatible with psad ? > > > > > > >From the above messages, it doesn''t seem likely. > > > > > > > Investigate the FW_MSG_SEARCH parameter in psad -- looks like you need > > to set that to "Shorewall:" or something similar. > > > > Look...

...intrinsic is called just to demonstrate the difference ) ..... %6 = bitcast i8* %5 to x86_mmx* %wide.load8.1 = load x86_mmx* %6, align 1 %7 = getelementptr inbounds i8* %pix2, i64 8 %8 = bitcast i8* %7 to x86_mmx* %wide.load79.1 = load x86_mmx* %8, align 1 %9 = call x86_mmx @llvm.x86.mmx.psad.bw(x86_mmx %wide.load8.1, x86_mmx %wide.load79.1) %10 = bitcast x86_mmx %9 to i64 %11 = trunc i64 %10 to i32 %12 = add i32 %11, %4 ..... This Loop optimization can reduce the loop to only one instruction for every 4 or 8 or 16 iterations of the loop ( depending on the target sad instruction...

...ll come up with a patch soon! -Ahmed > > -Hal > > ----- Original Message ----- >> From: "Vj Muthyala" <Vj.Muthyala at amd.com> >> To: llvmdev at cs.uiuc.edu >> Sent: Tuesday, January 27, 2015 10:14:44 PM >> Subject: [LLVMdev] RFC: generation of PSAD instruction >> >> Hello, >> >> I was looking at the following test case which is very relevant in >> imaging applications. >> >> >> >> int sad(unsigned char *pix1, unsigned char *pix2) >> >> { >> >> int sum = 0; >>...

On 4 May 2015 at 08:37, Shahid, Asghar-ahmad <Asghar-ahmad.Shahid at amd.com> wrote: > My worry is regarding the query for cost calculation for specific SAD > instructions such as ‘psad’ (X86) or ‘usad’ (ARM) in Loop Vectorizer. Hi Shahid, The vectorizer's cost model has the ability to return different costs for the same instruction based on the arguments (scalar/vector, big/small, special cases), so I don't think that adding intrisics will help you in defining the corre...

Hi Renato, Thanks for your response. My concern was actually this. For example, take vector type V8i16 on X86 target With llvm.sad() intrinsic: VC1 (Vector Cost) = Cost associated with "PSAD" instruction. W/ llvm.absd() and llvm.hadd() VC2 = Cost associated with "absolute diff" + "horizontal add" ( ??? ) As I will be querying with getIntrinsicCost(ID) for these two intrinsics separately, Will VC1==VC2? May be I am missing something obvious? Regards, Shahi...

Hi Asghar-Ahmed, I saw your last ping - sorry, I'm away on vacation and back on Wednesday. Generally, I'm not sure that having both absd/hadd and sad are compatible with the discussions going on in other threads, for example my thread about min and max. Given that those two intrinsics are fairly trivial to match , I don't see the need to have two different canonical forms. James On

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, I changed all rules to drop (Even the one in shorewall.conf) .. And PSAD works great with Shorewall here ... Although that might not be what you want. Lady Linux At 10:43 AM 9/19/2003, you wrote: >Is there a way for shorewall to be comatible with psad ? >thanks & regards >Petr Novak "No Problems Only Solutions" Francesca C. Smith Lady Linux Int...

Hi Rail, Below 2 revisions might be of your interest which Detect SAD patterns and emit psadbw instructions on X86.: http://reviews.llvm.org/D14840 http://reviews.llvm.org/D14897 Intrinsics related to absdiff revisons : http://reviews.llvm.org/D10867 http://reviews.llvm.org/D11678 Hope this helps. Regards, Suyog On Sat, May 28, 2016 at 4:20 AM, Rail Shafigulin via llvm-dev < llvm-...

...with filenames and line numbers)? I'm having difficulty tracking down the steps you provided. Any help is appreciated. On Mon, Apr 4, 2016 at 9:02 PM, Shahid, Asghar-ahmad < Asghar-ahmad.Shahid at amd.com> wrote: > Hi Rail, > > > > We had done this for generation of X86 PSAD (sum of absolute difference) > instruction through > > Llvm intrinsic. Doing this requires following > > 1. Define an intrinsic, xyz(), for the required instruction and > corresponding SDNode > > 2. Generate the “call xyz() “ IR based the matched pattern > &g...

...h is an example of core code)? I'd like to add this intrinsic with as little code change as possible. On Fri, May 27, 2016 at 8:59 PM, suyog sarda <sardask01 at gmail.com> wrote: > Hi Rail, > > Below 2 revisions might be of your interest which Detect SAD patterns and > emit psadbw instructions on X86.: > > http://reviews.llvm.org/D14840 > http://reviews.llvm.org/D14897 > > Intrinsics related to absdiff revisons : > > http://reviews.llvm.org/D10867 > http://reviews.llvm.org/D11678 > > Hope this helps. > > Regards, > Suyog > > On...

My target has an instruction that adds up all elements in the vector and stores the result in a register. I'm trying to implement it in my compiler but I'm not sure even where to start. I did look at other targets, but they don't seem to have anything like it ( I could be wrong. My experience with LLVM is limited, so if I missed it, I'd appreciate if someone could point it out ).

Hello Leon. In addition to everything else mentioned in this thread, I'd recommend you a great book on the topic. "Attack Detection and Response with iptables, psad, and fwsnort by Michael Rash" It contains a really nice and detailed guide on iptables and most common attacks, nmap, psad and snort. Regarding your config, I'd like to point several things: 1. You're not dropping packets in status 'INVALID' on top of your script, which is st...

Hi Guys After reading http://lartc.org/lartc.html#LARTC.QDISC http://www.docum.org/docum.org/ http://tldp.org/HOWTO/Traffic-Control-HOWTO/ http://www.opalsoft.net/qos/DS-21.htm and a wonderful figure from: http://www.opalsoft.net/qos/ds-lb-214.gif I have a newbie question. Suposse next figure: <--- up 128K internet ----- dsl ---------------------eth1 -Linux Qos- eth0 ------ LAN

...ek further. Kind Regards Leon On Wed, Jun 29, 2016 at 5:41 PM, l at avc.su <l at avc.su> wrote: > Hello Leon. > > In addition to everything else mentioned in this thread, I'd recommend you > a great book on the topic. > "Attack Detection and Response with iptables, psad, and fwsnort by Michael > Rash" > It contains a really nice and detailed guide on iptables and most common > attacks, nmap, psad and snort. > > Regarding your config, I'd like to point several things: > 1. You're not dropping packets in status 'INVALID' on top...

...imization? How hard is it to do it? Is that a > realistic objective. > > Rail > > On Mon, Apr 4, 2016 at 9:02 PM, Shahid, Asghar-ahmad < > Asghar-ahmad.Shahid at amd.com> wrote: > >> Hi Rail, >> >> >> >> We had done this for generation of X86 PSAD (sum of absolute difference) >> instruction through >> >> Llvm intrinsic. Doing this requires following >> >> 1. Define an intrinsic, xyz(), for the required instruction and >> corresponding SDNode >> >> 2. Generate the “call xyz() “ IR b...

...ler could target it during an optimization? How hard is it to do it? Is that a realistic objective. Rail On Mon, Apr 4, 2016 at 9:02 PM, Shahid, Asghar-ahmad <Asghar-ahmad.Shahid at amd.com<mailto:Asghar-ahmad.Shahid at amd.com>> wrote: Hi Rail, We had done this for generation of X86 PSAD (sum of absolute difference) instruction through Llvm intrinsic. Doing this requires following 1. Define an intrinsic, xyz(), for the required instruction and corresponding SDNode 2. Generate the “call xyz() “ IR based the matched pattern 3. Map “call xyz()” IR to correspondin...

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Dear Members I hope you are all doing well. I am busy teaching myself iptables and was wondering if I may get some advise. The scenario is the following: 1. Default policy is to block all traffic 2. Allow web traffic and SSH 3. Allow other applications I have come up with the following: #!/bin/bash # RESET CURRENT RULE BASE iptables -F service iptables save # DEFAULT FIREWALL