search for: hashkey

Hi, I''ve been working on hashing in tc for a month. Since there are only a limited number of avaialbe example on hashing, I''ll be appreciate if someone can my questions as follows: 1. tc filter add dev eth1 protocol ip perent 1:0 \ prio 5 u32 ht 800:: \ match ip src 1.2.0.0/16 \ hashkey mask 0x000000ff at 12 \ link 2: It seems that the hashkey make can only applied to ip header. How can I use the marked number in a packet (using iptables) as the hashkey??? 2.By looking ad "tc filter add fw help", it seems that hashing is not supported in "fw", is it? so how c...

Hi, I need to set filter-hash and use source-port as hashkey. It seems that I can''t use "hashkey" without using "match". I am using following commands: tc qdisc add ... root handle 1:0 htb # Loop to add 1000 classes (i = 1 to 1000) tc class add ... parent 1:0 classid 1:$i #set filters tc filter add ... protocol i...

Hello I have 2 class-B networks (172.22.0.0/16 and 172.23.0.0/16, over 130k of ip''s) and need to setup traffic tbf shapers with 64kb/s for each ip from 172.22.0.0/16 and 128kb/s for each ip from 172.23.0.0/16 just read lartc and don''t understand how to use u32 for decreasing number of rules and hashing

Hi, I am trying to put together a hashing filter based on example provided in LARTC how-to document. I want to link two hashing filters together where first one will use 3rd octet of an IP address as hashkey and second one will use 4th octet as hash key. How do I tell mask the address so that u32 filter uses 3rd octet as hashkey? Venkatesh K _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org...

Hi i have 2 class C 80.97.103.0/24 and 81.180.12.0/24 but i dont konw how to set hashing tables for HTB tc add dev eth0 parent 1: prio 0 handle 1: protocol ip u32 divisor 256 tc add dev eth0 parent 1: prio 0 protocol ip u32 match src 80.97.103.0/24 hashkey mask 0x000000FF at 12 link 1: but i want 2 hashkey for 80.97.103.0/24 and for 81.180.12.0/24 can somebody help me ? _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

...ht 2:65: \ match ip src 192.168.1.100 \ flowid 1:20 # link tc filter add dev eth1 \ protocol ip parent 1: prio 2 \ handle 800::2 \ u32 \ ht 800:: \ match ip src 192.168.0.0/16 \ hashkey mask 0x000000ff at 12 \ link 2: I changed just the hashkey mask on the "link" filter to: hashkey mask 0x000ff000 at 12 \ and the hashtable on the "flow" filter to: ht 2:80: \ Checking it in tc -r filter list dev eth1, I see...

...ying with tc. I''m using htb and sfq. I tried to setup shaping of every ip address within a /20. I found that there must be an upper limit of about 2096 on the number of rules (classes, qdiscs or filters). I was testing a /20 which gives 4096 classes, qdiscs and filters. I''m using hashkey to optimize processing of frames. When executing the script below - it stops when adding rules for "ip 10.0.7.253" with this error: handle 1:4097 handle 1:4099 handle 1:4101 RTNETLINK answers: File exists We have an error talking to the kernel handle 1:4103 RTNETLINK answers: File exist...

...ipt. tc qdisc del dev eth0 root tc qdisc add dev eth0 root handle 1: htb tc class add dev eth0 parent 1: classid 1:2 htb rate 100Mbit ceil 100MBit tc filter add dev eth0 parent 1:2 handle 2: protocol ip u32 divisor 256 tc filter add dev eth0 protocol ip parent 1: u32 match ip dst 192.168.0.0/16 hashkey mask 0x000000ff at 12 link 2: tc class add dev eth0 parent 1:2 classid 1:3 htb rate 128Kbit ceil 128Kbit j=0; while [ $j -le 254 ] do i=0; while [ $i -le 254 ] do hexi=`echo "obase=16; $i" | bc` tc filter add dev eth0 protocol ip...

...city) : protocol ip u32 #what is the divisor meaning !? handle 5: protocol ip u32 divisor 256 u32 ht 800:: match ip src 192.168.12.0/24 match ip src 192.168.48.0/24 match ip src 192.168.56.0/24 #13 is the third octet in the IP address isnt ''it hashkey mask 0x000000ff at 13 link 5: # c => 12 , u32 ht 5:c: match ip src 192.168.12.1 flowid 1:1 u32 ht 5:c: match ip src 192.168.12.2 flowid 1:2 ..... # 30 => 48 u32 ht 5:30: match ip src 192.168.48.1 flowid 1:257 u32 ht 5:30: match ip src 192.168.48.2 flowid 1:258 .........

...What is the max values of each of these, also where these or some of these hex numbers? I tried this on redhat 7.3 so there may have been some updates, but this is one of the tests I did. [root@RL1 root]# tc filter add dev eth0 protocol ip parent 1:0 prio 10 u32 ht fffe:: match ip dst 10.2.0.0/16 hashkey mask 0x0000ff00 at 16 link 2: Illegal "ht" So I assume that that FFFE:: is too large so I found that tc filter add dev eth0 protocol ip parent 1:0 prio 10 u32 ht fff:: match ip dst 10.2.0.0/16 hashkey mask 0x0000ff00 at 16 link 7: so it works with fff I guess does this mean its an 24 bit...

...arent 2:22 classid 2:1012 htb rate 128kbit ceil 128kbit burst 0 cburst 0 RTNETLINK answers: Device or resource busy If I try to delete the whole part of ''handle 104'': [root@malinko shape_www-0.20]# tc filter del dev eth0 protocol ip prio 5 parent 2: u32 match ip dst 10.0.0.0/30 hashkey mask 0x000000ff at 16 link 104: [root@malinko shape_www-0.20]# tc filter del dev eth0 parent 2:22 handle 104: protocol ip prio 5 u32 divisor 256 Here there is no error but all filter rules is deleted also filter rules for ''10.0.0.0/30'' and a have no shaping at all. Are there kno...

I forgot to ask a few more. Is there a relation between the hashtable ID /(parent,handle) so that if I used 2: for a hash table I could or couldn''t use 2: for a (parent,handle)ID? I also noticed that you type the hashtables like 2:2: can you have more levels with this? like 2:2:2:1: ? and I guess the same question with the parent/handles. thanks again. -- When dealing with a slow

...st 10 avpkt 1000 # Create hash table attached to transit class tc filter add dev eth1 parent 1:0 handle 2: protocol ip u32 divisor 256 # Create filter to hash out last octet and link to hash table 2: tc filter add dev eth1 protocol ip parent 1:1 prio 5 u32 ht 800:: match ip src 216.19.49.0/24 hashkey mask 0x000000ff at 12 link 2: # Create class for 128Kbit limit tc class add dev eth1 parent 1:0 classid 1:2 cbq bandwidth 200Mbit rate 128kbit allot 1514 prio 5 maxburst 20 avpkt 1000 bounded # Create filter for IP I''m limiting tc filter add dev eth1 protocol ip parent 1:0 prio 5 u32...

Hi i have 2 class C 80.97.103.0/24 and 81.180.12.0/24 but i dont konw how to set hashing tables for HTB tc add dev eth0 parent 1: prio 0 handle 1: protocol ip u32 divisor 256 tc add dev eth0 parent 1: prio 0 protocol ip u32 match src 80.97.103.0/24 hashkey mask 0x000000FF at 12 link 1: but i want 2 hashkey for 80.97.103.0/24 and for 81.180.12.0/24 can somebody help me ? this is a part fo my script tc qdisc del dev eth0 root tc qdisc add dev eth0 root handle 1: htb default 1 r2q 1 tc class add dev eth0 parent 1: classid 1:1 htb rate 640Kbit ceil 64...

...elf, who go beyond the 1 byte or less > than a byte can be brave enough to upgrade as well. Agreed. > b) new hash (if it is to be upgraded) with 2.4.x > Again non-issue with 1 byte. Issues show up if you use > or < 1 byte. > > And besides if you really insist, look at using hashkey - it will work a > lot better since the dependency is only at the kernel and none at user > space. Hashkey and sample do different things. Briefly, hashkey is used to direct a "link" operation to the correct bucket at runtime, whereas "sample" is used put a u32 filter l...

...filter add dev imq0 parent 1:0 prio 5 handle 1: protocol ip u32 divisor 1 $TC filter add dev imq0 parent 1:0 prio 5 handle 2: protocol ip u32 divisor 256 What divisor is doing? And the last problem... $TC filter add dev imq0 protocol ip parent 1:0 prio 5 u32 ht 800:: match ip src 10.0.0.0/16 hashkey mask 0x000000ff at 12 link 2: Why after ht should be 800? When 801:: is correct value? When this value should be different. Please help me understand this. -- Konrad aka Lenthir

Hi I''m setting up shaping using HTB and hashkey. It seems like there is a limit on the number of classid''s at 10000? How can I go higher than 10000? This is what my output say when I reach classid number 10000: ... ... /sbin/tc class add dev eth0 parent 2:6 classid 2:9998 htb prio 5 rate 768kbit ceil 768kbit burst 0 cburst 0 /sbin/t...

...ng configuration possible? where ht 800 links to 3: for the 3rd Octet in the IP and then 3: links to 4: for the fourth Octet? tc filter add dev eth0 parent 1:0 prio 10 handle 3: protocol ip u32 divisor 256 tc filter add dev eth0 protocol ip parent 1:0 prio 10 u32 ht 800:: match ip dst 10.1.0.0/16 hashkey mask 0x0000ff00 at 16 link 3: tc filter add dev eth0 parent 1:0 prio 10 handle 4: protocol ip u32 divisor 256 tc filter add dev eth0 protocol ip parent 1:0 prio 10 u32 ht 3:01: match ip dst 10.1.1.0/24 hashkey mask 0x000000ff at 16 link 4: I''m not sure how the Hashtable works I looked a...

...reate 13 in List.iter ( - fun (field, _) -> - if Hashtbl.mem fseen field then ( - eprintf (f_"virt-builder: index is corrupt: %s: field '%s' appears two or more times\n") n field; + fun (field, subkey, _) -> + let hashkey = (field, subkey) in + if Hashtbl.mem fseen hashkey then ( + (match subkey with + | Some value -> + eprintf (f_"virt-builder: index is corrupt: %s: field '%s[%s]' appears two or more times\n") n field value + | No...

We currently use iptables, matching packets based on IP address and marking them with an ID. Multiple IP addresses can be marked with the same ID. We then filter based on the ID. We have close to 2000 filters now and I''m looking into hashing tables. Is there any way to create a hashing filter based on the fwmark? Paul C. Diem PCDiem@FoxValley.net