From f3036fc213b6e6cce0bf5572167b93b9e9959a3a Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Wed, 5 Jul 2023 15:24:32 +0100 Subject: [PATCH] [linux] Set a default MAC address for tap devices Avoid the need to always specify a local MAC address on the command line by setting a default hardware MAC address (using the same default address as for slirp devices). Signed-off-by: Michael Brown --- src/drivers/linux/tap.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/drivers/linux/tap.c b/src/drivers/linux/tap.c index 9b52c20ab..c1364ddb5 100644 --- a/src/drivers/linux/tap.c +++ b/src/drivers/linux/tap.c @@ -56,6 +56,10 @@ struct tap_nic { int fd; }; +/** Default MAC address */ +static const uint8_t tap_default_mac[ETH_ALEN] = + { 0x52, 0x54, 0x00, 0x12, 0x34, 0x56 }; + /** Open the TAP device */ static int tap_open(struct net_device * netdev) { @@ -202,6 +206,7 @@ static int tap_probe(struct linux_device *device, struct linux_device_request *r nic = netdev->priv; linux_set_drvdata(device, netdev); netdev->dev = &device->dev; + memcpy ( netdev->hw_addr, tap_default_mac, ETH_ALEN ); memset(nic, 0, sizeof(*nic)); /* Look for the mandatory if setting */