From mboxrd@z Thu Jan 1 00:00:00 1970 From: Josh Triplett Subject: [PATCH] Allow pktgen to work with loopback devices. Date: Wed, 07 Mar 2007 04:29:05 -0800 Message-ID: <45EEB011.5020606@freedesktop.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Jeff Garzik , Andrew Morton Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org pktgen currently only works on network devices with type ARPHRD_ETHER. Add support for the loopback device, type ARPHRD_LOOPBACK. I've tested this on my system, using a modified pktgen.conf-1-1 with s/eth1/lo/g, and it works fine; the network device statistics confirm packet transmission and receipt. Thanks to Sarah Bailey for discovering and tracking down the problem. Signed-off-by: Josh Triplett --- I intentionally didn't change the error message "not an ethernet device". For the purposes of pktgen, loopback devices act like ethernet devices. net/core/pktgen.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/net/core/pktgen.c b/net/core/pktgen.c index 74a9a32..6fc6f9d 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -1930,7 +1930,7 @@ static struct net_device *pktgen_setup_dev(struct pktgen_dev *pkt_dev) printk("pktgen: no such netdevice: \"%s\"\n", pkt_dev->ifname); goto out; } - if (odev->type != ARPHRD_ETHER) { + if (odev->type != ARPHRD_LOOPBACK && odev->type != ARPHRD_ETHER) { printk("pktgen: not an ethernet device: \"%s\"\n", pkt_dev->ifname); goto out_put; -- 1.5.0.2