Date: Fri, 4 Jun 1999 18:08:54 +0200 (CEST) From: Riccardo Veraldi <riccardo@righi.ml.org> To: Ladavac Marino <mladavac@metropolitan.at> Cc: "'Pavel V. Antipov'" <pavel@ikar.elect.ru>, freebsd-questions@FreeBSD.ORG Subject: RE: Ethernet-level connection Message-ID: <Pine.BSF.4.10.9906041808120.19306-100000@righi.ml.org> In-Reply-To: <55586E7391ACD211B9730000C110027617963C@r-lmh-wi-100.corpnet.at>
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do u know how I can access to raw ethernet data without using bpf and pcap
??? how I have to do??
ther si some way to look inside kernel buffer for ether device ?
thanks
Rick
On Fri, 4 Jun 1999, Ladavac Marino wrote:
> > -----Original Message-----
> > From: Pavel V. Antipov [SMTP:pavel@ikar.elect.ru]
> > Sent: Friday, June 04, 1999 2:19 PM
> > To: Riccardo Veraldi
> > Cc: freebsd-questions@FreeBSD.ORG
> > Subject: Re: Ethernet-level connection
> >
> > Hi !
> >
> > I saw PF_PACKET parameter for system call "socket" in linux. In
> > FreeBSD
> > thare is PF_LINK (see <sys/sockst.h>).
> > I tried to execute this program:
> >
> > #include <sys/types.h>
> > #include <sys/socket.h>
> > #include <iostream.h>
> > #include <errno.h>
> >
> > main(){
> > cout << socket(AF_LINK, SOCK_RAW, 0)<<endl;
> > cout<<errno<<endl;
> > }
> >
> > As a result errno == 43. I use 2.2.5 and hope that in latest versions
> > of
> > FreeBSD I'll find direct access to Ethernet packets via
> > socket & recvfrom & sendto system calls.
> >
> [ML] I don't think you ever will. Use bpf instead.
>
> I don't think PF_PACKET will ever be in BSD because IIRC it is
> only a subset of bpf functionality. It either gets none or all packets
> whereas bpf is capable of programming the NIC for packet filtering (i.e.
> filtering is done in hardware, if the hardware supports it, and many
> cards do, otherwise in driver).
>
> AFAIK PF_PACKET is a Linuxism. Most other unices have bpf.
>
> /Marino
> > Pavel
> >
> >
> >
> >
> >
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> > with "unsubscribe freebsd-questions" in the body of the message
>
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