> -----Original Message----- > From: netdev-ow...@vger.kernel.org [mailto:netdev- > ow...@vger.kernel.org] On Behalf Of Ashutosh Tripathi > Sent: Tuesday, June 16, 2015 3:52 AM > To: netdev@vger.kernel.org > Subject: Setting up interfaces in loopback mode using SIOCETHTOOL > > Hi All, > > In spite of several days of trying to get information out of ethtool source > code, I could not get a way to set the loopback mode for network interfaces. > I was also referring to the driver code for ixgbe devices to get more info on > the support it provides to ethtool. In the driver code, there seems to be a > way to set the loopback mode. But I had no idea how to refer to this code > from user space. > > The SIOCETHTOOL is pretty general purpose. There is a way to test the > interface in loopback mode via the command line interface. But I just wanted > to set the interface in loopback mode so that I could send packets on the > interface myself and stress the interface. > > Please help me with any suggestion in this regard. > > Thanks, > ---- > Ashutosh > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in the body > of a message to majord...@vger.kernel.org More majordomo info at > http://vger.kernel.org/majordomo-info.html
Hey Ashutosh, Currently ixgbe only uses MAC loopback via the ethtool self_test, which doesn't sound like what you're looking for. I don't know of an ethtool interface to tell an adapter to go into loopback mode, but this might just be because the driver I currently work on (ixgbe) doesn't support it. :) Thanks, -Don Skidmore <donald.c.skidm...@intel.com>
