Parav Pandit
2021-Oct-21 16:35 UTC
[PATCH linux-next v4 5/8] vdpa_sim_net: Enable user to set mac address and mtu
Enable user to set the mac address and mtu so that each vdpa device can have its own user specified mac address and mtu. This is done by implementing the management device's configuration layout fields setting callback routine. Now that user is enabled to set the mac address, remove the module parameter for same. And example of setting mac addr and mtu: $ vdpa mgmtdev show $ vdpa dev add name bar mgmtdev vdpasim_net $ vdpa dev config set bar mac 00:11:22:33:44:55 mtu 9000 View the config after setting: $ vdpa dev config show bar: mac 00:11:22:33:44:55 link up link_announce false mtu 9000 Signed-off-by: Parav Pandit <parav at nvidia.com> Reviewed-by: Eli Cohen <elic at nvidia.com> --- drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 35 +++++++++++++++------------- 1 file changed, 19 insertions(+), 16 deletions(-) diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c index d681e423e64f..76dd24abc791 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c @@ -16,6 +16,7 @@ #include <linux/vringh.h> #include <linux/vdpa.h> #include <uapi/linux/virtio_net.h> +#include <uapi/linux/vdpa.h> #include "vdpa_sim.h" @@ -29,12 +30,6 @@ #define VDPASIM_NET_VQ_NUM 2 -static char *macaddr; -module_param(macaddr, charp, 0); -MODULE_PARM_DESC(macaddr, "Ethernet MAC address"); - -static u8 macaddr_buf[ETH_ALEN]; - static void vdpasim_net_work(struct work_struct *work) { struct vdpasim *vdpasim = container_of(work, struct vdpasim, work); @@ -112,9 +107,21 @@ static void vdpasim_net_get_config(struct vdpasim *vdpasim, void *config) { struct virtio_net_config *net_config = config; - net_config->mtu = cpu_to_vdpasim16(vdpasim, 1500); net_config->status = cpu_to_vdpasim16(vdpasim, VIRTIO_NET_S_LINK_UP); - memcpy(net_config->mac, macaddr_buf, ETH_ALEN); +} + +static void vdpasim_net_setup_config(struct vdpasim *vdpasim, + const struct vdpa_dev_set_config *config) +{ + struct virtio_net_config *vio_config = vdpasim->config; + + if (config->mask & (1 << VDPA_ATTR_DEV_NET_CFG_MACADDR)) + memcpy(vio_config->mac, config->net.mac, ETH_ALEN); + if (config->mask & (1 << VDPA_ATTR_DEV_NET_CFG_MTU)) + vio_config->mtu = cpu_to_vdpasim16(vdpasim, config->net.mtu); + else + /* Setup default MTU to be 1500 */ + vio_config->mtu = cpu_to_vdpasim16(vdpasim, 1500); } static void vdpasim_net_mgmtdev_release(struct device *dev) @@ -147,6 +154,8 @@ static int vdpasim_net_dev_add(struct vdpa_mgmt_dev *mdev, const char *name, if (IS_ERR(simdev)) return PTR_ERR(simdev); + vdpasim_net_setup_config(simdev, config); + ret = _vdpa_register_device(&simdev->vdpa, VDPASIM_NET_VQ_NUM); if (ret) goto reg_err; @@ -180,20 +189,14 @@ static struct vdpa_mgmt_dev mgmt_dev = { .device = &vdpasim_net_mgmtdev, .id_table = id_table, .ops = &vdpasim_net_mgmtdev_ops, + .config_attr_mask = (1 << VDPA_ATTR_DEV_NET_CFG_MACADDR | + 1 << VDPA_ATTR_DEV_NET_CFG_MTU), }; static int __init vdpasim_net_init(void) { int ret; - if (macaddr) { - mac_pton(macaddr, macaddr_buf); - if (!is_valid_ether_addr(macaddr_buf)) - return -EADDRNOTAVAIL; - } else { - eth_random_addr(macaddr_buf); - } - ret = device_register(&vdpasim_net_mgmtdev); if (ret) return ret; -- 2.25.4
Jason Wang
2021-Oct-25 07:02 UTC
[PATCH linux-next v4 5/8] vdpa_sim_net: Enable user to set mac address and mtu
? 2021/10/22 ??12:35, Parav Pandit ??:> Enable user to set the mac address and mtu so that each vdpa device > can have its own user specified mac address and mtu. > This is done by implementing the management device's configuration > layout fields setting callback routine. > > Now that user is enabled to set the mac address, remove the module > parameter for same. > > And example of setting mac addr and mtu: > $ vdpa mgmtdev show > > $ vdpa dev add name bar mgmtdev vdpasim_net > $ vdpa dev config set bar mac 00:11:22:33:44:55 mtu 9000The attributes were set during dev add if I was not wrong. Thanks