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Hello, Normally, in addition to such qdisc scheduler mechanisms as FIFO, PQ, WRR, WFQ, are there any more? Then, there is a confusion on scheduler in Linux enviroment: Assume there is a qdisc, such as RED as a leaf qdisc in a router, we know, if there is packet which want to enqueue the packet, the Function red_enqueue is called, but when the packet leave the queue(when the Function red_dequeue

Hello, This is a question about diffserv on linux. We know, there is a file sch_dsmark in linux source code. Now, i want to add something in the function dsmark_enqueue, for example, i want to add a function which can add a class and queue automately in dsmark_enqueue. That is, not using the command tc. After adding one, it works well, but when add the second one, there is a kernel panic:

Hello, As it is well know that CBQ is the class based queue. But i am confused on the word "class" now, especially it is used in Diffserv. IMO, different classes should mean that there are different kinds of traffics, so the class should be difined by the parameters (such as bandwidth, priority..) the traffic wanted. That is, using cbq we can define different kinds of traffics which

Hello, I think I have misundertood the relationship between cbq and the queue (such as Red) attached to it. This is my latest opion, please give me some advice on it: At beginning, I thought that a packet will be firstly classified by the CBQ where it will find the proper class it belongs to. Then the packet enters the queue attached to that class. At last, the packet is scheduled in that

Hello, all, I have subscribed to the mail list, but i have not received the welcome messge. So i want to know if i have joined the mail list. Thanks, _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

Hello, As we know that there are four kinds of AF in diffserv architecture, and each kind has three different priorities. So, there are 12 different kinds of AF, is it right? Of course, each AF has its recommended DSCP value. Then, we know the AF is classified into four differnt classes, such as AF1, AF2, AF3, and AF4. But in a Diffserv domain, and in the core router, there will be a classifier

Hello Merry Christmas, I want to know whether there are anyone who has been familiar with the source code in linux kernel about Diffserv, I think i have met lots of troubles. A simple problem: if we use the command ''tc add class'' to add a class, do you think it will be in a Interrupt enviroment? That is, if i want to add a class or qdisc using TC, are there any interrupts int

Hello, We know, VQs are used in Gred to offer different schedulers, in order to make clear what the VQs are, I have read the sch_gred.c in net/sched/. In the function gred_enqueue(), at first it will find the VQ(q) according to the lower four bits of the skb->tc_index, then some parameters of the q is modified, such as q->packetsin and q->bytesin. At last the packet was put into the