On Sun, Dec 19, 2021 at 10:03 PM Eli Cohen <elic@xxxxxxxxxx> wrote:
>
> All masks in this file are 64 bits. Change BIT to BIT_ULL.
>
> Other occurences use (1 << val) which yields a 32 bit value. Change them
> to use BIT_ULL too.
>
It looks to me the patch was squashed with vendor specific stats
extension unexpectedly.
Thanks
> Signed-off-by: Eli Cohen <elic@xxxxxxxxxx>
> ---
> drivers/vdpa/vdpa.c | 154 ++++++++++++++++++++++++++++++++++++--
> include/linux/vdpa.h | 10 +++
> include/uapi/linux/vdpa.h | 7 ++
> 3 files changed, 166 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c
> index 8b929692026e..c92fbfbbdf12 100644
> --- a/drivers/vdpa/vdpa.c
> +++ b/drivers/vdpa/vdpa.c
> @@ -554,9 +554,9 @@ vdpa_nl_cmd_mgmtdev_get_dumpit(struct sk_buff *msg, struct netlink_callback *cb)
> return msg->len;
> }
>
> -#define VDPA_DEV_NET_ATTRS_MASK ((1 << VDPA_ATTR_DEV_NET_CFG_MACADDR) | \
> - (1 << VDPA_ATTR_DEV_NET_CFG_MTU) | \
> - (1 << VDPA_ATTR_DEV_NET_CFG_MAX_VQP))
> +#define VDPA_DEV_NET_ATTRS_MASK (BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MACADDR) | \
> + BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MTU) | \
> + BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MAX_VQP))
>
> static int vdpa_nl_cmd_dev_add_set_doit(struct sk_buff *skb, struct genl_info *info)
> {
> @@ -575,12 +575,12 @@ static int vdpa_nl_cmd_dev_add_set_doit(struct sk_buff *skb, struct genl_info *i
> if (nl_attrs[VDPA_ATTR_DEV_NET_CFG_MACADDR]) {
> macaddr = nla_data(nl_attrs[VDPA_ATTR_DEV_NET_CFG_MACADDR]);
> memcpy(config.net.mac, macaddr, sizeof(config.net.mac));
> - config.mask |= (1 << VDPA_ATTR_DEV_NET_CFG_MACADDR);
> + config.mask |= BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MACADDR);
> }
> if (nl_attrs[VDPA_ATTR_DEV_NET_CFG_MTU]) {
> config.net.mtu =
> nla_get_u16(nl_attrs[VDPA_ATTR_DEV_NET_CFG_MTU]);
> - config.mask |= (1 << VDPA_ATTR_DEV_NET_CFG_MTU);
> + config.mask |= BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MTU);
> }
> if (nl_attrs[VDPA_ATTR_DEV_NET_CFG_MAX_VQP]) {
> config.net.max_vq_pairs =
> @@ -879,6 +879,90 @@ vdpa_dev_config_fill(struct vdpa_device *vdev, struct sk_buff *msg, u32 portid,
> return err;
> }
>
> +static int vdpa_fill_stats_rec(struct vdpa_device *vdev, struct sk_buff *msg, u16 *index)
> +{
> + struct vdpa_vq_stats stats;
> + u16 idx = *index;
> + int err;
> +
> + err = vdev->config->get_vq_stats(vdev, index, &stats);
> + if (err)
> + return err;
> +
> + if (nla_put_u16(msg, VDPA_ATTR_DEV_QUEUE_INDEX, idx))
> + return -EMSGSIZE;
> +
> + if (nla_put_u16(msg, VDPA_ATTR_DEV_QUEUE_CTRL, !!stats.ctrl_vq))
> + return -EMSGSIZE;
> +
> + if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_RECEIVED_DESC, stats.received_desc,
> + VDPA_ATTR_PAD))
> + return -EMSGSIZE;
> +
> + if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_COMPLETED_DESC, stats.completed_desc,
> + VDPA_ATTR_PAD))
> + return -EMSGSIZE;
> +
> + return 0;
> +}
> +
> +static int vdpa_dev_net_stats_fill(struct vdpa_device *vdev, struct sk_buff *msg, u16 index)
> +{
> + int err;
> +
> + if (!vdev->config->get_vq_stats)
> + return -EOPNOTSUPP;
> +
> + if (index != VDPA_INVAL_QUEUE_INDEX) {
> + err = vdpa_fill_stats_rec(vdev, msg, &index);
> + if (err)
> + return err;
> + } else {
> + index = 0;
> + do {
> + err = vdpa_fill_stats_rec(vdev, msg, &index);
> + if (err)
> + return err;
> + } while (index != VDPA_INVAL_QUEUE_INDEX);
> + }
> +
> + return 0;
> +}
> +
> +static int vdpa_dev_stats_fill(struct vdpa_device *vdev, struct sk_buff *msg, u32 portid,
> + u32 seq, int flags, u16 index)
> +{
> + u32 device_id;
> + void *hdr;
> + int err;
> +
> + hdr = genlmsg_put(msg, portid, seq, &vdpa_nl_family, flags,
> + VDPA_CMD_DEV_VSTATS_GET);
> + if (!hdr)
> + return -EMSGSIZE;
> +
> + if (nla_put_string(msg, VDPA_ATTR_DEV_NAME, dev_name(&vdev->dev))) {
> + err = -EMSGSIZE;
> + goto undo_msg;
> + }
> +
> + device_id = vdev->config->get_device_id(vdev);
> + if (nla_put_u32(msg, VDPA_ATTR_DEV_ID, device_id)) {
> + err = -EMSGSIZE;
> + goto undo_msg;
> + }
> +
> + err = vdpa_dev_net_stats_fill(vdev, msg, index);
> +
> + genlmsg_end(msg, hdr);
> +
> + return err;
> +
> +undo_msg:
> + genlmsg_cancel(msg, hdr);
> + return err;
> +}
> +
> static int vdpa_nl_cmd_dev_config_get_doit(struct sk_buff *skb, struct genl_info *info)
> {
> struct vdpa_device *vdev;
> @@ -960,6 +1044,59 @@ vdpa_nl_cmd_dev_config_get_dumpit(struct sk_buff *msg, struct netlink_callback *
> return msg->len;
> }
>
> +static int vdpa_nl_cmd_dev_stats_get_doit(struct sk_buff *skb,
> + struct genl_info *info)
> +{
> + struct vdpa_device *vdev;
> + struct sk_buff *msg;
> + const char *devname;
> + struct device *dev;
> + u16 index = -1;
> + int err;
> +
> + if (!info->attrs[VDPA_ATTR_DEV_NAME])
> + return -EINVAL;
> +
> + if (info->attrs[VDPA_ATTR_DEV_QUEUE_INDEX])
> + index = nla_get_u16(info->attrs[VDPA_ATTR_DEV_QUEUE_INDEX]);
> +
> + devname = nla_data(info->attrs[VDPA_ATTR_DEV_NAME]);
> + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
> + if (!msg)
> + return -ENOMEM;
> +
> + mutex_lock(&vdpa_dev_mutex);
> + dev = bus_find_device(&vdpa_bus, NULL, devname, vdpa_name_match);
> + if (!dev) {
> + NL_SET_ERR_MSG_MOD(info->extack, "device not found");
> + err = -ENODEV;
> + goto dev_err;
> + }
> + vdev = container_of(dev, struct vdpa_device, dev);
> + if (!vdev->mdev) {
> + NL_SET_ERR_MSG_MOD(info->extack, "unmanaged vdpa device");
> + err = -EINVAL;
> + goto mdev_err;
> + }
> + err = vdpa_dev_stats_fill(vdev, msg, info->snd_portid, info->snd_seq, 0, index);
> + if (!err)
> + err = genlmsg_reply(msg, info);
> +
> + put_device(dev);
> + mutex_unlock(&vdpa_dev_mutex);
> +
> + if (err)
> + nlmsg_free(msg);
> +
> + return err;
> +
> +mdev_err:
> + put_device(dev);
> +dev_err:
> + mutex_unlock(&vdpa_dev_mutex);
> + return err;
> +}
> +
> static const struct nla_policy vdpa_nl_policy[VDPA_ATTR_MAX + 1] = {
> [VDPA_ATTR_MGMTDEV_BUS_NAME] = { .type = NLA_NUL_STRING },
> [VDPA_ATTR_MGMTDEV_DEV_NAME] = { .type = NLA_STRING },
> @@ -967,6 +1104,7 @@ static const struct nla_policy vdpa_nl_policy[VDPA_ATTR_MAX + 1] = {
> [VDPA_ATTR_DEV_NET_CFG_MACADDR] = NLA_POLICY_ETH_ADDR,
> /* virtio spec 1.1 section 5.1.4.1 for valid MTU range */
> [VDPA_ATTR_DEV_NET_CFG_MTU] = NLA_POLICY_MIN(NLA_U16, 68),
> + [VDPA_ATTR_DEV_QUEUE_INDEX] = NLA_POLICY_RANGE(NLA_U16, 0, 32767),
> };
>
> static const struct genl_ops vdpa_nl_ops[] = {
> @@ -1000,6 +1138,12 @@ static const struct genl_ops vdpa_nl_ops[] = {
> .doit = vdpa_nl_cmd_dev_config_get_doit,
> .dumpit = vdpa_nl_cmd_dev_config_get_dumpit,
> },
> + {
> + .cmd = VDPA_CMD_DEV_VSTATS_GET,
> + .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
> + .doit = vdpa_nl_cmd_dev_stats_get_doit,
> + .flags = GENL_ADMIN_PERM,
> + },
> };
>
> static struct genl_family vdpa_nl_family __ro_after_init = {
> diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
> index 72ea8ad7ba21..4eea0c34301f 100644
> --- a/include/linux/vdpa.h
> +++ b/include/linux/vdpa.h
> @@ -58,6 +58,12 @@ struct vdpa_vq_state {
> };
> };
>
> +struct vdpa_vq_stats {
> + u64 received_desc;
> + u64 completed_desc;
> + bool ctrl_vq;
> +};
> +
> struct vdpa_mgmt_dev;
>
> /**
> @@ -275,6 +281,8 @@ struct vdpa_config_ops {
> const struct vdpa_vq_state *state);
> int (*get_vq_state)(struct vdpa_device *vdev, u16 idx,
> struct vdpa_vq_state *state);
> + int (*get_vq_stats)(struct vdpa_device *vdev, u16 *idx,
> + struct vdpa_vq_stats *stats);
> struct vdpa_notification_area
> (*get_vq_notification)(struct vdpa_device *vdev, u16 idx);
> /* vq irq is not expected to be changed once DRIVER_OK is set */
> @@ -451,4 +459,6 @@ struct vdpa_mgmt_dev {
> int vdpa_mgmtdev_register(struct vdpa_mgmt_dev *mdev);
> void vdpa_mgmtdev_unregister(struct vdpa_mgmt_dev *mdev);
>
> +#define VDPA_INVAL_QUEUE_INDEX 0xffff
> +
> #endif /* _LINUX_VDPA_H */
> diff --git a/include/uapi/linux/vdpa.h b/include/uapi/linux/vdpa.h
> index 27c2a41e4eec..ebc346087435 100644
> --- a/include/uapi/linux/vdpa.h
> +++ b/include/uapi/linux/vdpa.h
> @@ -18,6 +18,7 @@ enum vdpa_command {
> VDPA_CMD_DEV_DEL,
> VDPA_CMD_DEV_GET, /* can dump */
> VDPA_CMD_DEV_CONFIG_GET, /* can dump */
> + VDPA_CMD_DEV_VSTATS_GET,
> };
>
> enum vdpa_attr {
> @@ -45,6 +46,12 @@ enum vdpa_attr {
>
> VDPA_ATTR_DEV_NEGOTIATED_FEATURES, /* u64 */
> VDPA_ATTR_DEV_MAX_DEV_VQS, /* u16 */
> +
> + VDPA_ATTR_DEV_QUEUE_INDEX, /* u16 */
> + VDPA_ATTR_DEV_QUEUE_CTRL, /* u16 */
> + VDPA_ATTR_DEV_VENDOR_RECEIVED_DESC, /* u64 */
> + VDPA_ATTR_DEV_VENDOR_COMPLETED_DESC, /* u64 */
> +
> /* new attributes must be added above here */
> VDPA_ATTR_MAX,
> };
> --
> 2.34.1
>
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