[PATH v6 2/3] vdpa_sim_net: Add the support of set mac address

From: Cindy Lu
Date: Wed Jul 24 2024 - 21:33:22 EST


Add the function to support setting the MAC address.
For vdpa_sim_net, the driver will write the MAC address
to the config space, and other devices can implement
their own functions to support this.

Signed-off-by: Cindy Lu <lulu@xxxxxxxxxx>
---
drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
index cfe962911804..cd404a896414 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
@@ -414,6 +414,25 @@ static void vdpasim_net_get_config(struct vdpasim *vdpasim, void *config)
net_config->status = cpu_to_vdpasim16(vdpasim, VIRTIO_NET_S_LINK_UP);
}

+static int vdpasim_net_set_attr(struct vdpa_mgmt_dev *mdev,
+ struct vdpa_device *dev,
+ const struct vdpa_dev_set_config *config)
+{
+ struct vdpasim *vdpasim = container_of(dev, struct vdpasim, vdpa);
+ struct virtio_net_config *vio_config = vdpasim->config;
+
+ mutex_lock(&vdpasim->mutex);
+
+ if (config->mask & (1 << VDPA_ATTR_DEV_NET_CFG_MACADDR)) {
+ ether_addr_copy(vio_config->mac, config->net.mac);
+ mutex_unlock(&vdpasim->mutex);
+ return 0;
+ }
+
+ mutex_unlock(&vdpasim->mutex);
+ return -EINVAL;
+}
+
static void vdpasim_net_setup_config(struct vdpasim *vdpasim,
const struct vdpa_dev_set_config *config)
{
@@ -510,7 +529,8 @@ static void vdpasim_net_dev_del(struct vdpa_mgmt_dev *mdev,

static const struct vdpa_mgmtdev_ops vdpasim_net_mgmtdev_ops = {
.dev_add = vdpasim_net_dev_add,
- .dev_del = vdpasim_net_dev_del
+ .dev_del = vdpasim_net_dev_del,
+ .dev_set_attr = vdpasim_net_set_attr
};

static struct virtio_device_id id_table[] = {
--
2.45.0