Question regarding "eth0: socket"

GNU Radio
1

Hey folks,

I followed the installation instructions on wiki page, however, I still
met
“Operation not permitted” problem shown below even though I added the
USRP
group and obtained the permission to access USRP. So far,
benchmark_tx.py
works correctly, but I was wondering if this message is a critical one.
Can
I ignore this message? It seems that running as sudo will solve it.

socket(PF_PACKET, SOCK_RAW, htons(0xBEEF)): Operation not permitted
eth0: socket: No such file or directory

Best,

Michael

2

On Tue, Jan 26, 2010 at 11:20, Milo W. [email protected]
wrote:

socket(PF_PACKET, SOCK_RAW, htons(0xBEEF)): Operation not permitted
eth0: socket: No such file or directory

There are three things needed to use the USRP2 as a non-root user:

  1. The group ‘usrp’ must exist and the non-root user must be a member of
    it.

  2. The file $(prefix)/bin/usrp2_socket_opener must be owned by root:usrp

  3. The same file must have mode 04750 set on it.

Johnathan

3

Thank you for your fast response. If I only use USRP( not USRP2), this
should not be a problem, right? Since USRP has nothing to do with
eth0:socket

On Tue, Jan 26, 2010 at 11:32 AM, Johnathan C. <

4

On Tue, Jan 26, 2010 at 12:25, Milo W. [email protected]
wrote:

Thank you for your fast response. If I only use USRP( not USRP2), this
should not be a problem, right? Since USRP has nothing to do with
eth0:socket

Yes, this is an artifact of the automatic probing for which USRP is
installed when using the digital example. You can use --usrp=usrp1 to
avoid the probe, or you can set your permissions correctly and not get
the error message.

Johnathan