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authorLukas Wunner <lukas@wunner.de>2020-03-10 13:49:46 +0300
committerDavid S. Miller <davem@davemloft.net>2020-03-11 01:44:59 +0300
commit1e09e5818b3a07ee824addf0d048df3797de687e (patch)
treee55336a292a07d8e03f5a69b7087512d10dc2247 /net/core/pktgen.c
parent62751b6808ec6bdc7622849815943cbc7377262a (diff)
downloadlinux-1e09e5818b3a07ee824addf0d048df3797de687e.tar.xz
pktgen: Allow on loopback device
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> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/pktgen.c')
-rw-r--r--net/core/pktgen.c4
1 files changed, 2 insertions, 2 deletions
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);