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vdpasim: allow to assign a MAC address

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Add macaddr parameter to the module to set the MAC address to use

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Link: https://lore.kernel.org/r/20201029122050.776445-3-lvivier@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Laurent Vivier 2020-10-29 13:20:50 +01:00 committed by Michael S. Tsirkin
parent 4a6a42db53
commit 0c86d77488
1 changed files with 13 additions and 1 deletions
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14
drivers/vdpa/vdpa_sim/vdpa_sim.c
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@ -38,6 +38,10 @@ static int batch_mapping = 1;
module_param(batch_mapping, int, 0444);
MODULE_PARM_DESC(batch_mapping, "Batched mapping 1 -Enable; 0 - Disable");
static char *macaddr;
module_param(macaddr, charp, 0);
MODULE_PARM_DESC(macaddr, "Ethernet MAC address");
struct vdpasim_virtqueue {
struct vringh vring;
struct vringh_kiov iov;
@ -375,7 +379,15 @@ static struct vdpasim *vdpasim_create(void)
if (!vdpasim->buffer)
goto err_iommu;
eth_random_addr(vdpasim->config.mac);
if (macaddr) {
mac_pton(macaddr, vdpasim->config.mac);
if (!is_valid_ether_addr(vdpasim->config.mac)) {
ret = -EADDRNOTAVAIL;
goto err_iommu;
}
} else {
eth_random_addr(vdpasim->config.mac);
}
vringh_set_iotlb(&vdpasim->vqs[0].vring, vdpasim->iommu);
vringh_set_iotlb(&vdpasim->vqs[1].vring, vdpasim->iommu);