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authorLaurent Vivier <lvivier@redhat.com>2020-10-29 13:20:50 +0100
committerMichael S. Tsirkin <mst@redhat.com>2020-10-30 04:04:35 -0400
commit0c86d774883fa17e7c81b0c8838b88d06c2c911e (patch)
treee4cb60956e53bf97c3a2addb64c2cf605341f916 /drivers/vdpa
parent4a6a42db53aae049a8a64d4b273761bc80c46ebf (diff)
downloadlinux-0c86d774883fa17e7c81b0c8838b88d06c2c911e.tar.bz2
vdpasim: allow to assign a MAC address
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>
Diffstat (limited to 'drivers/vdpa')
-rw-r--r--drivers/vdpa/vdpa_sim/vdpa_sim.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
index 3192ce47e029..9e9ead83c19b 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -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);