Commit 035cbbe2 authored by jiangdongxu's avatar jiangdongxu Committed by Jiang Dongxu
Browse files

vdpa: add vmstate header file 

virt inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I86ITO



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Add the vmstate.h header file to define the structure of vdpa device
status to achieve live migration of cross-vendor vdpa devices.

Signed-off-by: default avatarjiangdongxu <jiangdongxu1@huawei.com>
parent 8c17b6e2

include/linux/vdpa_vmstate.h

0 → 100644
+182 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Copyright (c) Huawei Technologies Co., Ltd. 2023-2023. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License

 * for more details.

 *

 * Description: vdpa vmstate header file

 * Author: jiangdongxu

 * Create: 2023-12-3

 * Note:

 * History: 2023-12-3: Create file

 */



#ifndef VDPA_VMSTATE_H

#define VDPA_VMSTATE_H



#include <linux/virtio_net.h>

#include <linux/virtio_scsi.h>





#define VIRTIO_MIG_STATE_TYPE_DEVICE 0

#define VIRTIO_MIG_STATE_TYPE_VQ 1

#define VIRTIO_MIG_STATE_TYPE_CONFIG 2

#define VIRTIO_MIG_STATE_TYPE_FEATURE 3

#define VIRTIO_MIG_STATE_TYPE_PLATFORM 4

#define VIRTIO_MIG_STATE_TYPE_VENDOR 255



#define VIRTIO_MIG_DEVICE_T_COMMON 0

#define VIRTIO_MIG_DEVICE_T_NET 1

#define VIRTIO_MIG_DEVICE_T_BLK 2

#define VIRTIO_MIG_DEVICE_T_SCSI 8



#define VIRTIO_MIG_CONFIG_T_NET 1

#define VIRTIO_MIG_CONFIG_T_BLK 2

#define VIRTIO_MIG_CONFIG_T_SCSI 8



#define MAC_LEN 6



struct virtio_mig_state_header {

	le32 type;

	le32 len;

};



struct virtio_mig_dev_common_data {

	le32 vendor_id;

	le32 device_id;

	le32 device_features_l;

	le32 device_features_h;

	le32 driver_features_l;

	le32 driver_features_h;

	le32 status;

	le32 generation;

	le32 msix_en;

};



struct virtio_mig_dev_common_state {

	struct virtio_mig_state_header hdr;

	struct virtio_mig_dev_common_data data;

};



struct virtio_mig_vq_split_state {

	le16 avail_index;

	le16 used_index;

};

struct virtio_mig_vq_packed_state {

	le16 avail_wrapped : 1;

	le16 avail_index : 15;

	le16 used_wrapped : 1;

	le16 used_index : 15;

};



struct virtio_mig_per_vq_data {

	le32 qsize;



	u8 qenabled;

	le16 msix_vector;



	le32 desc_l;

	le32 desc_h;

	le32 avail_l;

	le32 avail_h;

	le32 used_l;

	le32 used_h;

	union {

		struct virtio_mig_vq_split_state split;

		struct virtio_mig_vq_packed_state packed;

	} version;

};



/* vq state */

struct virtio_mig_vq_state {

	struct virtio_mig_state_header hdr;



	le16 msix_config;

	le16 valid_queues;



	le16 num_queues;



	struct virtio_mig_per_vq_data vq_state[];

};



/* config space */

struct virtio_mig_config_state {

	struct virtio_mig_state_header hdr;

	union {

		struct virtio_net_config net;

		struct virtio_blk_config blk;

		struct virtio_scsi_config scsi;

	} dev;

};



struct virtio_mig_cfg_blk_features {



};



struct virtio_mig_cfg_scsi_features {



};



struct virtio_mig_cfg_net_ctrl_guest_offloads {

	struct virtio_mig_state_header hdr;

	le64 offloads;

	le64 reserved;

};



struct virtio_mig_cfg_net_ctrl_mq_vq_pairs {

	struct virtio_mig_state_header hdr;

	le16 cur_virtqueue_pairs;

};



struct virtio_mig_cfg_net_ctrl_mac_table {

	struct virtio_mig_state_header hdr;

	le16 num_unicast;

	/* TODO: need to be implemented later */

	// u8 unicast_macs[][6];

	le16 num_multicast;

	/* TODO: need to be implemented later */

	// u8 multicast_macs[][6];

};



struct virtio_mig_cfg_net_ctrl_vlan {

	struct virtio_mig_state_header hdr;

	le32 vlans[128];

};



struct virtio_mig_cfg_net_data {

	le32 nfeatures;

	struct virtio_mig_cfg_net_ctrl_guest_offloads offloads;

	struct virtio_mig_cfg_net_ctrl_mq_vq_pairs mq_pairs;

	struct virtio_mig_cfg_net_ctrl_mac_table mac_table;

	struct virtio_mig_cfg_net_ctrl_vlan vlan_table;

};



struct virtio_mig_cfg_net_features {

	struct virtio_mig_state_header hdr;

	struct virtio_mig_cfg_net_data data;

};



/* feature */

struct virtio_mig_feat_state {

	union {

		struct virtio_mig_cfg_net_features net;

		struct virtio_mig_cfg_blk_features blk;

		struct virtio_mig_cfg_scsi_features scsi;

	};

};



struct vdpa_mig_state {

	struct virtio_mig_dev_common_state dev_state;

	struct virtio_mig_config_state cfg_state;

	struct virtio_mig_feat_state feat_state;

	struct virtio_mig_vq_state vq_state;

};



#endif /* VDPA_VMSTATE_H */