Em Mon, Aug 20, 2007 at 08:53:15AM +1200, Ian McDonald escreveu: > On 8/20/07, Shahiduzzaman <shahid21st@xxxxxxxxx> wrote: > > Hi all, > > > > This may be a redundant or very naive question - sorry in advance for > > that. Can anybody tell me, whether the current Linux kernel DCCP > > implementation is done in a fashion like TCP pluggable congestion > > avoidance modules infrastructure (http://lwn.net/Articles/128681/) ? > > The short answer is yes and no! I think the answer is just "yes" The CCID infrastructure in the Linux kernel is done in a fashion like the TCP pluggable congestion avoidances modules infrastructure. One can write a new CCID and load, making it available for userspace programs to use without changing a line of code in what is already in the kernel. > No that the in-tree version does not support it. > > Yes in that for CCID2 (TCP like) there was an out of tree version that > could use the different TCP congestion control methods. The question was if it was done "in a fashion like", not "exactly as". I may be confused with your answer as english is not my first language tho :-) > If you mean a simple way to plug in new CCIDs like CCID4 etc then the > answer is no. However two people are working on CCID4 which may make > the code more modular. Why not? See the recent implementation of CCID0 (UDP Like Congestion Control :-)) by Gerrit: http://www.mail-archive.com/dccp@xxxxxxxxxxxxxxx/msg02091.html Of course, as in the current TCP pluggable infrastructure it may well be the case that the current CCID pluggable infrastructure something that a new CCID wants to plug into is not pluggable yet. - Arnaldo
