Re: PF_PACKET

• Subject: Re: PF_PACKET
• From: Enrico "lupsyn" Del Zotto <email@hidden>
• Date: Fri, 23 Jul 2004 11:29:43 +0200

At 3:17 PM +0200 7/22/04, Enrico lupsyn Del Zotto wrote:

I must send a packet ( eth header, and arp packet ) over the en0.
In linux i use the sockaddr_ll struct and a PF_Packet. Now in bsd i don't know how do it ,
can someone help me ?
thx,bye

Enrico,

For this, you want to open a PF_NDRV socket to send out a raw ethernet packet. Take a look at the sample code BSDLLCTest
<http://developer.apple.com/samplecode/BSDLLCTest/BSDLLCTest.html>

This sample demonstrates the technique to open a PF_NDRV socket, which requires root access, then demonstrates both the send and receive of packets using this socket.

Sending raw packets is straightforward, but the sample is designed to receive LLC Ethernet frames. You'll need to tweak the sample to receive a phase I Ethernet frame for a tcp packet, if this is within the scope of your project.
--
Sincerely,
Rich Kubota
email@hidden
(408) 974-6212
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