On Fri, 14 Jun 2002, Robert Kavaler wrote: > We have developed some networking interface code that works very > differently from the current stuff in rtlinux. Our code uses the native > linux networking code and intercepts UDP packets before they come > to/from a linux process and redirects them to an rtlinux task. The code > allocates a pool of buffers in linux and a queue to use/free those > buffers on the rtside. The interface is clunky because I didn't want to > create any patches to the linux networking code (except to expose one > function call in the networking code). Better interfaces can easily be > developed. > > The basic idea is that an application would be written in the standard > linux process space, and then, after the socket is established and > connected (yes, the current code requires connected UDP sockets), the > application would redirect traffic to a real-time task. By doing this, > the logic and complexities of establishing a valid and meaningful UDP > socket are perfomed in normal linux processes, but the UDP data is > processed in real-time tasks. > > The biggest advantage of this approach is that all network drivers are > supported and so is all the special linux networking code including > netfilter (nat, etc.), routing, ARP, bonding, etc. The disadvantage is > that ones code has to be written with this separation of setup code from > rtcode in mind. The code is, however, in the spirit of the original > intent of rtlinux where only rt stuff runs in rt space. > > Is there any interest in this code out there? Yes.
-ishwar -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] -- For more information on Real-Time Linux see: http://www.rtlinux.org/
