| Message ID | 077e04669829f190988f3b2018d4eee40a42a36e.1583836647.git.lukas@wunner.de |
|---|---|
| State | New |
| Headers | show |
| Series | [net-next] pktgen: Allow on loopback device | expand |
diff --git a/net/core/pktgen.c b/net/core/pktgen.c index acc849df60b5..f2b3d8dd40f4 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -2003,8 +2003,8 @@ static int pktgen_setup_dev(const struct pktgen_net *pn, return -ENODEV; } - if (odev->type != ARPHRD_ETHER) { - pr_err("not an ethernet device: \"%s\"\n", ifname); + if (odev->type != ARPHRD_ETHER && odev->type != ARPHRD_LOOPBACK) { + pr_err("not an ethernet or loopback device: \"%s\"\n", ifname); err = -EINVAL; } else if (!netif_running(odev)) { pr_err("device is down: \"%s\"\n", ifname);
When pktgen is used to measure the performance of dev_queue_xmit() packet handling in the core, it is preferable to not hand down packets to a low-level Ethernet driver as it would distort the measurements. Allow using pktgen on the loopback device, thus constraining measurements to core code. Signed-off-by: Lukas Wunner <lukas@wunner.de> --- net/core/pktgen.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)