Helin,
You have probably missed this (old) patch / bug report.
2015-08-28 16:08, Sergey Balabanov:
> Hi,
>
> Probably I missed something in understanding why the mac is not set on kni
> creation. Any comments would be highly appreciated.
>
> Thanks,
> Sergey
>
> On Friday 28 August 2015 16:06:27 Sergey Balabanov wrote:
> > There is a situation when ioctl returns zero mac address (00:00:00:00:00:00)
> > for just created kni. The situation happens because kni mac is set on
> > 'ipconfig up' event (kni_net_open callback) not on kni creation
> > (kni_ioctl_create).
> >
> > Signed-off-by: Sergey Balabanov <balabanovsv at ecotelecom.ru>
> > ---
> > lib/librte_eal/linuxapp/kni/kni_misc.c | 10 ++++++++++
> > lib/librte_eal/linuxapp/kni/kni_net.c | 9 ---------
> > 2 files changed, 10 insertions(+), 9 deletions(-)
> >
> > diff --git a/lib/librte_eal/linuxapp/kni/kni_misc.c
> > b/lib/librte_eal/linuxapp/kni/kni_misc.c index 2e9fa89..61f83a0 100644
> > --- a/lib/librte_eal/linuxapp/kni/kni_misc.c
> > +++ b/lib/librte_eal/linuxapp/kni/kni_misc.c
> > @@ -28,6 +28,7 @@
> > #include <linux/pci.h>
> > #include <linux/kthread.h>
> > #include <linux/rwsem.h>
> > +#include <linux/etherdevice.h> /* eth_type_trans */
> >
> > #include <exec-env/rte_kni_common.h>
> > #include "kni_dev.h"
> > @@ -465,6 +466,15 @@ kni_ioctl_create(unsigned int ioctl_num, unsigned long
> > ioctl_param) if (pci)
> > pci_dev_put(pci);
> >
> > + if (kni->lad_dev)
> > + memcpy(net_dev->dev_addr, kni->lad_dev->dev_addr, ETH_ALEN);
> > + else
> > + /*
> > + * Generate random mac address. eth_random_addr() is the newer
> > + * version of generating mac address in linux kernel.
> > + */
> > + random_ether_addr(net_dev->dev_addr);
> > +
> > ret = register_netdev(net_dev);
> > if (ret) {
> > KNI_ERR("error %i registering device \"%s\"\n",
> > diff --git a/lib/librte_eal/linuxapp/kni/kni_net.c
> > b/lib/librte_eal/linuxapp/kni/kni_net.c index ab5add4..b50b4cf 100644
> > --- a/lib/librte_eal/linuxapp/kni/kni_net.c
> > +++ b/lib/librte_eal/linuxapp/kni/kni_net.c
> > @@ -70,15 +70,6 @@ kni_net_open(struct net_device *dev)
> > struct rte_kni_request req;
> > struct kni_dev *kni = netdev_priv(dev);
> >
> > - if (kni->lad_dev)
> > - memcpy(dev->dev_addr, kni->lad_dev->dev_addr, ETH_ALEN);
> > - else
> > - /*
> > - * Generate random mac address. eth_random_addr() is the newer
> > - * version of generating mac address in linux kernel.
> > - */
> > - random_ether_addr(dev->dev_addr);
> > -
> > netif_start_queue(dev);
> >
> > memset(&req, 0, sizeof(req));