+---- Maksim Yevmenkin wrote: | > I'm in a bit of a bind. I want a sequence of ethernet frames to send | > up through this framework. Hooking to ng_ether will give me this but I | > am restricted to taking ALL frames (thus taking the machine offline) or | > orphaned frames (where I will have to write some sort of traffic | > generator to make frames of an invalid type). The third option here is | > to hack ng_ether to deliver frames out the lower hook as well as up | > into the kernel IP stack, thus giving me a complete stream without | > taking the box offline. I've gotten libnet which seems to fit the bill | > to generate any orphans I want, but making a stream of frames by hand | > is a pain. | | why do you need ng_ether, ng_tee etc. at all? can't you just write | your code with assumption that there will be one (or few) input | hooks? can't you just connect *user-space* Ethernet/IP frame generator | to the input hook(s) and send frames? that's what i did in HCI/Bluetooth | stack when i had no *real* Bluetooth hardware. i just wrote simple | *user-space* Bluetooth device simulator and connected it to the stack. | then i run VMWare and debug my code. | | you can use tcpdump and save dumps to the file and then just read it | and re-inject them into your node. this way you can test at least | basic stuff, i.e. frame parsing etc.
Thought of this just after I sent the email - d'oh! Thanks! -- Steve Tremblett To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
