Re: Initialisation of a networking protocol
Hi, Thanks for the help. I managed to figure out that the problem was I had left out the DOMAIN_SET command in my code, but I've got that sorted now and am just working through bugs in my code causing page faults whenever an MPLS packet is received. Should hopefully have something up and running by the weeks end. Thanks again, Ryan French. ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Initialisation of a networking protocol
Hi Ryan, Did you initialize the .pr_init member of struct protosw for MPLS? AFAIK, MPLS does not use an outer IP header, so adding a struct ipprotosw won't work; they are similar structs however. cheers BMS ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Initialisation of a networking protocol
On Mon, 29 Sep 2008, Ryan French wrote: I'm having a bit of trouble with my MPLS protocol code at the moment. I have the code written and compiling (mostly based on some OpenBSD code I was shown) but when an MPLS packet is received it doesnt appear as thou my mpls_input routine is being called. I believe this is because I have not initialised the protocol properly. I have created protosw structure for MPLS as well as created an mpls_init(void) function which registers the protocol with netisr via netisr_register. Other than that I am not really sure where I tell the kernel to call the mpls_init function so that the protocol is initialised, and a couple of hours of googling/looking through ip6 code hasnt really helped at all. If anyone can help and needs to see the code it can be viewed on Perforce at http://perforce.freebsd.org/depotTreeBrowser.cgi?FSPC=//depot/projects/soc2008/rfrench_mpls&HIDEDEL=NO Hi Ryan: netisr is just a dispatch facility consisting of a series of named queues, worker thread(s), and a dispatch model -- it is the responsibility of some other piece of driver or protocol code to inject packets using netisr_queue() or netisr_dispatch(). Typically this occurs in the decapsulation code for the layer below the dispatched layer -- often the link layer. You can take a look at current dispatch points here: http://fxr.watson.org/fxr/ident?im=bigexcerpts;i=netisr_queue http://fxr.watson.org/fxr/ident?im=bigexcerpts;i=netisr_dispatch A typical dispatch point is ether_demux(), which switches on the etherhet frame header's protocol field and then hands off the packet to netisr for dispatch. If the dispatch may lead to recursion, then you may need to use netisr_queue() rather than netisr_direct() to disallow direct dispatch. Robert N M Watson Computer Laboratory University of Cambridge ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Initialisation of a networking protocol
Hi everyone, I'm having a bit of trouble with my MPLS protocol code at the moment. I have the code written and compiling (mostly based on some OpenBSD code I was shown) but when an MPLS packet is received it doesnt appear as thou my mpls_input routine is being called. I believe this is because I have not initialised the protocol properly. I have created protosw structure for MPLS as well as created an mpls_init(void) function which registers the protocol with netisr via netisr_register. Other than that I am not really sure where I tell the kernel to call the mpls_init function so that the protocol is initialised, and a couple of hours of googling/looking through ip6 code hasnt really helped at all. If anyone can help and needs to see the code it can be viewed on Perforce at http://perforce.freebsd.org/depotTreeBrowser.cgi?FSPC=//depot/projects/soc2008/rfrench_mpls&HIDEDEL=NO Thanks for any help. - Ryan French ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
