On Fri, Jun 30, 2023 at 8:36 AM Shannon Nelson <shannon.nelson@xxxxxxx> wrote:
>
> From: Allen Hubbe <allen.hubbe@xxxxxxx>
>
> When the vdpa device is reset, also reinitialize it with the mac address
> that was assigned when the device was added.
>
> Fixes: 151cc834f3dd ("pds_vdpa: add support for vdpa and vdpamgmt interfaces")
> Signed-off-by: Allen Hubbe <allen.hubbe@xxxxxxx>
> Signed-off-by: Shannon Nelson <shannon.nelson@xxxxxxx>
> Reviewed-by: Brett Creeley <brett.creeley@xxxxxxx>
> ---
> drivers/vdpa/pds/vdpa_dev.c | 16 ++++++++--------
> drivers/vdpa/pds/vdpa_dev.h | 1 +
> 2 files changed, 9 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/vdpa/pds/vdpa_dev.c b/drivers/vdpa/pds/vdpa_dev.c
> index 5071a4d58f8d..e2e99bb0be2b 100644
> --- a/drivers/vdpa/pds/vdpa_dev.c
> +++ b/drivers/vdpa/pds/vdpa_dev.c
> @@ -409,6 +409,8 @@ static void pds_vdpa_set_status(struct vdpa_device *vdpa_dev, u8 status)
> pdsv->vqs[i].avail_idx = 0;
> pdsv->vqs[i].used_idx = 0;
> }
> +
> + pds_vdpa_cmd_set_mac(pdsv, pdsv->mac);
So this is not necessarily called during reset. So I think we need to
move it to pds_vdpa_reset()?
The rest looks good.
Thanks
> }
>
> if (status & ~old_status & VIRTIO_CONFIG_S_FEATURES_OK) {
> @@ -532,7 +534,6 @@ static int pds_vdpa_dev_add(struct vdpa_mgmt_dev *mdev, const char *name,
> struct device *dma_dev;
> struct pci_dev *pdev;
> struct device *dev;
> - u8 mac[ETH_ALEN];
> int err;
> int i;
>
> @@ -617,19 +618,18 @@ static int pds_vdpa_dev_add(struct vdpa_mgmt_dev *mdev, const char *name,
> * or set a random mac if default is 00:..:00
> */
> if (add_config->mask & BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MACADDR)) {
> - ether_addr_copy(mac, add_config->net.mac);
> - pds_vdpa_cmd_set_mac(pdsv, mac);
> + ether_addr_copy(pdsv->mac, add_config->net.mac);
> } else {
> struct virtio_net_config __iomem *vc;
>
> vc = pdsv->vdpa_aux->vd_mdev.device;
> - memcpy_fromio(mac, vc->mac, sizeof(mac));
> - if (is_zero_ether_addr(mac)) {
> - eth_random_addr(mac);
> - dev_info(dev, "setting random mac %pM\n", mac);
> - pds_vdpa_cmd_set_mac(pdsv, mac);
> + memcpy_fromio(pdsv->mac, vc->mac, sizeof(pdsv->mac));
> + if (is_zero_ether_addr(pdsv->mac)) {
> + eth_random_addr(pdsv->mac);
> + dev_info(dev, "setting random mac %pM\n", pdsv->mac);
> }
> }
> + pds_vdpa_cmd_set_mac(pdsv, pdsv->mac);
>
> for (i = 0; i < pdsv->num_vqs; i++) {
> pdsv->vqs[i].qid = i;
> diff --git a/drivers/vdpa/pds/vdpa_dev.h b/drivers/vdpa/pds/vdpa_dev.h
> index a1bc37de9537..cf02df287fc4 100644
> --- a/drivers/vdpa/pds/vdpa_dev.h
> +++ b/drivers/vdpa/pds/vdpa_dev.h
> @@ -39,6 +39,7 @@ struct pds_vdpa_device {
> u64 req_features; /* features requested by vdpa */
> u8 vdpa_index; /* rsvd for future subdevice use */
> u8 num_vqs; /* num vqs in use */
> + u8 mac[ETH_ALEN]; /* mac selected when the device was added */
> struct vdpa_callback config_cb;
> struct notifier_block nb;
> };
> --
> 2.17.1
>
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