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 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *
  * Copyright (c) 2011, Microsoft Corporation.
  *
  * Authors:
  *   Haiyang Zhang <haiyangz@microsoft.com>
  *   Hank Janssen  <hjanssen@microsoft.com>
  *   K. Y. Srinivasan <kys@microsoft.com>
  */
 
 #ifndef _HYPERV_NET_H
 #define _HYPERV_NET_H
 
 #include <linux/list.h>
 #include <linux/hyperv.h>
 #include <linux/rndis.h>
 #include <linux/jhash.h>
 
 /* RSS related */
 #define OID_GEN_RECEIVE_SCALE_CAPABILITIES 0x00010203  /* query only */
 #define OID_GEN_RECEIVE_SCALE_PARAMETERS 0x00010204  /* query and set */
 
 #define NDIS_OBJECT_TYPE_RSS_CAPABILITIES 0x88
 #define NDIS_OBJECT_TYPE_RSS_PARAMETERS 0x89
 #define NDIS_OBJECT_TYPE_OFFLOAD    0xa7
 
 #define NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2 2
 #define NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2 2
 
 struct ndis_obj_header {
     u8 type;
     u8 rev;
     u16 size;
 } __packed;
 
 /* ndis_recv_scale_cap/cap_flag */
 #define NDIS_RSS_CAPS_MESSAGE_SIGNALED_INTERRUPTS 0x01000000
 #define NDIS_RSS_CAPS_CLASSIFICATION_AT_ISR       0x02000000
 #define NDIS_RSS_CAPS_CLASSIFICATION_AT_DPC       0x04000000
 #define NDIS_RSS_CAPS_USING_MSI_X                 0x08000000
 #define NDIS_RSS_CAPS_RSS_AVAILABLE_ON_PORTS      0x10000000
 #define NDIS_RSS_CAPS_SUPPORTS_MSI_X              0x20000000
 #define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV4          0x00000100
 #define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6          0x00000200
 #define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6_EX       0x00000400
 
 struct ndis_recv_scale_cap { /* NDIS_RECEIVE_SCALE_CAPABILITIES */
     struct ndis_obj_header hdr;
     u32 cap_flag;
     u32 num_int_msg;
     u32 num_recv_que;
     u16 num_indirect_tabent;
 } __packed;
 
 
 /* ndis_recv_scale_param flags */
 #define NDIS_RSS_PARAM_FLAG_BASE_CPU_UNCHANGED     0x0001
 #define NDIS_RSS_PARAM_FLAG_HASH_INFO_UNCHANGED    0x0002
 #define NDIS_RSS_PARAM_FLAG_ITABLE_UNCHANGED       0x0004
 #define NDIS_RSS_PARAM_FLAG_HASH_KEY_UNCHANGED     0x0008
 #define NDIS_RSS_PARAM_FLAG_DISABLE_RSS            0x0010
 
 /* Hash info bits */
 #define NDIS_HASH_FUNC_TOEPLITZ 0x00000001
 #define NDIS_HASH_IPV4          0x00000100
 #define NDIS_HASH_TCP_IPV4      0x00000200
 #define NDIS_HASH_IPV6          0x00000400
 #define NDIS_HASH_IPV6_EX       0x00000800
 #define NDIS_HASH_TCP_IPV6      0x00001000
 #define NDIS_HASH_TCP_IPV6_EX   0x00002000
 
 #define NDIS_RSS_INDIRECTION_TABLE_MAX_SIZE_REVISION_2 (128 * 4)
 #define NDIS_RSS_HASH_SECRET_KEY_MAX_SIZE_REVISION_2   40
 
 #define ITAB_NUM 128
 
 struct ndis_recv_scale_param { /* NDIS_RECEIVE_SCALE_PARAMETERS */
     struct ndis_obj_header hdr;
 
     /* Qualifies the rest of the information */
     u16 flag;
 
     /* The base CPU number to do receive processing. not used */
     u16 base_cpu_number;
 
     /* This describes the hash function and type being enabled */
     u32 hashinfo;
 
     /* The size of indirection table array */
     u16 indirect_tabsize;
 
     /* The offset of the indirection table from the beginning of this
      * structure
      */
     u32 indirect_taboffset;
 
     /* The size of the hash secret key */
     u16 hashkey_size;
 
     /* The offset of the secret key from the beginning of this structure */
     u32 hashkey_offset;
 
     u32 processor_masks_offset;
     u32 num_processor_masks;
     u32 processor_masks_entry_size;
 };
 
 struct ndis_tcp_ip_checksum_info {
     union {
         struct {
             u32 is_ipv4:1;
             u32 is_ipv6:1;
             u32 tcp_checksum:1;
             u32 udp_checksum:1;
             u32 ip_header_checksum:1;
             u32 reserved:11;
             u32 tcp_header_offset:10;
         } transmit;
         struct {
             u32 tcp_checksum_failed:1;
             u32 udp_checksum_failed:1;
             u32 ip_checksum_failed:1;
             u32 tcp_checksum_succeeded:1;
             u32 udp_checksum_succeeded:1;
             u32 ip_checksum_succeeded:1;
             u32 loopback:1;
             u32 tcp_checksum_value_invalid:1;
             u32 ip_checksum_value_invalid:1;
         } receive;
         u32  value;
     };
 };
 
 struct ndis_pkt_8021q_info {
     union {
         struct {
             u32 pri:3; /* User Priority */
             u32 cfi:1; /* Canonical Format ID */
             u32 vlanid:12; /* VLAN ID */
             u32 reserved:16;
         };
         u32 value;
     };
 };
 
 /*
  * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
  * within the RNDIS
  *
  * The size of this structure is less than 48 bytes and we can now
  * place this structure in the skb->cb field.
  */
 struct hv_netvsc_packet {
     /* Bookkeeping stuff */
     u8 cp_partial; /* partial copy into send buffer */
 
     u8 rmsg_size; /* RNDIS header and PPI size */
     u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
     u8 page_buf_cnt;
 
     u16 q_idx;
     u16 total_packets;
 
     u32 total_bytes;
     u32 send_buf_index;
     u32 total_data_buflen;
     struct hv_dma_range *dma_range;
 };
 
 #define NETVSC_HASH_KEYLEN 40
 
 struct netvsc_device_info {
     unsigned char mac_adr[ETH_ALEN];
     u32  num_chn;
     u32  send_sections;
     u32  recv_sections;
     u32  send_section_size;
     u32  recv_section_size;
 
     struct bpf_prog *bprog;
 
     u8 rss_key[NETVSC_HASH_KEYLEN];
 };
 
 enum rndis_device_state {
     RNDIS_DEV_UNINITIALIZED = 0,
     RNDIS_DEV_INITIALIZING,
     RNDIS_DEV_INITIALIZED,
     RNDIS_DEV_DATAINITIALIZED,
 };
 
 struct rndis_device {
     struct net_device *ndev;
 
     enum rndis_device_state state;
 
     atomic_t new_req_id;
 
     spinlock_t request_lock;
     struct list_head req_list;
 
     struct work_struct mcast_work;
     u32 filter;
 
     bool link_state;        /* 0 - link up, 1 - link down */
 
     u8 hw_mac_adr[ETH_ALEN];
     u8 rss_key[NETVSC_HASH_KEYLEN];
 };
 
 
 /* Interface */
 struct rndis_message;
 struct ndis_offload_params;
 struct netvsc_device;
 struct netvsc_channel;
 struct net_device_context;
 
 extern u32 netvsc_ring_bytes;
 
 struct netvsc_device *netvsc_device_add(struct hv_device *device,
                     const struct netvsc_device_info *info);
 int netvsc_alloc_recv_comp_ring(struct netvsc_device *net_device, u32 q_idx);
 void netvsc_device_remove(struct hv_device *device);
 int netvsc_send(struct net_device *net,
         struct hv_netvsc_packet *packet,
         struct rndis_message *rndis_msg,
         struct hv_page_buffer *page_buffer,
         struct sk_buff *skb,
         bool xdp_tx);
 void netvsc_linkstatus_callback(struct net_device *net,
                 struct rndis_message *resp,
                 void *data, u32 data_buflen);
 int netvsc_recv_callback(struct net_device *net,
              struct netvsc_device *nvdev,
              struct netvsc_channel *nvchan);
 void netvsc_channel_cb(void *context);
 int netvsc_poll(struct napi_struct *napi, int budget);
 
 void netvsc_xdp_xmit(struct sk_buff *skb, struct net_device *ndev);
 u32 netvsc_run_xdp(struct net_device *ndev, struct netvsc_channel *nvchan,
            struct xdp_buff *xdp);
 unsigned int netvsc_xdp_fraglen(unsigned int len);
 struct bpf_prog *netvsc_xdp_get(struct netvsc_device *nvdev);
 int netvsc_xdp_set(struct net_device *dev, struct bpf_prog *prog,
            struct netlink_ext_ack *extack,
            struct netvsc_device *nvdev);
 int netvsc_vf_setxdp(struct net_device *vf_netdev, struct bpf_prog *prog);
 int netvsc_bpf(struct net_device *dev, struct netdev_bpf *bpf);
 int netvsc_ndoxdp_xmit(struct net_device *ndev, int n,
                struct xdp_frame **frames, u32 flags);
 
 int rndis_set_subchannel(struct net_device *ndev,
              struct netvsc_device *nvdev,
              struct netvsc_device_info *dev_info);
 int rndis_filter_open(struct netvsc_device *nvdev);
 int rndis_filter_close(struct netvsc_device *nvdev);
 struct netvsc_device *rndis_filter_device_add(struct hv_device *dev,
                           struct netvsc_device_info *info);
 void rndis_filter_update(struct netvsc_device *nvdev);
 void rndis_filter_device_remove(struct hv_device *dev,
                 struct netvsc_device *nvdev);
 int rndis_filter_set_rss_param(struct rndis_device *rdev,
                    const u8 *key);
 int rndis_filter_set_offload_params(struct net_device *ndev,
                     struct netvsc_device *nvdev,
                     struct ndis_offload_params *req_offloads);
 int rndis_filter_receive(struct net_device *ndev,
              struct netvsc_device *net_dev,
              struct netvsc_channel *nvchan,
              void *data, u32 buflen);
 
 int rndis_filter_set_device_mac(struct netvsc_device *ndev,
                 const char *mac);
 
 int netvsc_switch_datapath(struct net_device *nv_dev, bool vf);
 
 #define NVSP_INVALID_PROTOCOL_VERSION   ((u32)0xFFFFFFFF)
 
 #define NVSP_PROTOCOL_VERSION_1     2
 #define NVSP_PROTOCOL_VERSION_2     0x30002
 #define NVSP_PROTOCOL_VERSION_4     0x40000
 #define NVSP_PROTOCOL_VERSION_5     0x50000
 #define NVSP_PROTOCOL_VERSION_6     0x60000
 #define NVSP_PROTOCOL_VERSION_61    0x60001
 
 enum {
     NVSP_MSG_TYPE_NONE = 0,
 
     /* Init Messages */
     NVSP_MSG_TYPE_INIT          = 1,
     NVSP_MSG_TYPE_INIT_COMPLETE     = 2,
 
     NVSP_VERSION_MSG_START          = 100,
 
     /* Version 1 Messages */
     NVSP_MSG1_TYPE_SEND_NDIS_VER        = NVSP_VERSION_MSG_START,
 
     NVSP_MSG1_TYPE_SEND_RECV_BUF,
     NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE,
     NVSP_MSG1_TYPE_REVOKE_RECV_BUF,
 
     NVSP_MSG1_TYPE_SEND_SEND_BUF,
     NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE,
     NVSP_MSG1_TYPE_REVOKE_SEND_BUF,
 
     NVSP_MSG1_TYPE_SEND_RNDIS_PKT,
     NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE,
 
     /* Version 2 messages */
     NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF,
     NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF_COMP,
     NVSP_MSG2_TYPE_REVOKE_CHIMNEY_DELEGATED_BUF,
 
     NVSP_MSG2_TYPE_RESUME_CHIMNEY_RX_INDICATION,
 
     NVSP_MSG2_TYPE_TERMINATE_CHIMNEY,
     NVSP_MSG2_TYPE_TERMINATE_CHIMNEY_COMP,
 
     NVSP_MSG2_TYPE_INDICATE_CHIMNEY_EVENT,
 
     NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT,
     NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT_COMP,
 
     NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ,
     NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ_COMP,
 
     NVSP_MSG2_TYPE_ALLOC_RXBUF,
     NVSP_MSG2_TYPE_ALLOC_RXBUF_COMP,
 
     NVSP_MSG2_TYPE_FREE_RXBUF,
 
     NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT,
     NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT_COMP,
 
     NVSP_MSG2_TYPE_SEND_NDIS_CONFIG,
 
     NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE,
     NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
 
     NVSP_MSG2_MAX = NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
 
     /* Version 4 messages */
     NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION,
     NVSP_MSG4_TYPE_SWITCH_DATA_PATH,
     NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
 
     NVSP_MSG4_MAX = NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
 
     /* Version 5 messages */
     NVSP_MSG5_TYPE_OID_QUERY_EX,
     NVSP_MSG5_TYPE_OID_QUERY_EX_COMP,
     NVSP_MSG5_TYPE_SUBCHANNEL,
     NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
 
     NVSP_MSG5_MAX = NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
 
     /* Version 6 messages */
     NVSP_MSG6_TYPE_PD_API,
     NVSP_MSG6_TYPE_PD_POST_BATCH,
 
     NVSP_MSG6_MAX = NVSP_MSG6_TYPE_PD_POST_BATCH
 };
 
 enum {
     NVSP_STAT_NONE = 0,
     NVSP_STAT_SUCCESS,
     NVSP_STAT_FAIL,
     NVSP_STAT_PROTOCOL_TOO_NEW,
     NVSP_STAT_PROTOCOL_TOO_OLD,
     NVSP_STAT_INVALID_RNDIS_PKT,
     NVSP_STAT_BUSY,
     NVSP_STAT_PROTOCOL_UNSUPPORTED,
     NVSP_STAT_MAX,
 };
 
 struct nvsp_message_header {
     u32 msg_type;
 };
 
 /* Init Messages */
 
 /*
  * This message is used by the VSC to initialize the channel after the channels
  * has been opened. This message should never include anything other then
  * versioning (i.e. this message will be the same for ever).
  */
 struct nvsp_message_init {
     u32 min_protocol_ver;
     u32 max_protocol_ver;
 } __packed;
 
 /*
  * This message is used by the VSP to complete the initialization of the
  * channel. This message should never include anything other then versioning
  * (i.e. this message will be the same for ever).
  */
 struct nvsp_message_init_complete {
     u32 negotiated_protocol_ver;
     u32 max_mdl_chain_len;
     u32 status;
 } __packed;
 
 union nvsp_message_init_uber {
     struct nvsp_message_init init;
     struct nvsp_message_init_complete init_complete;
 } __packed;
 
 /* Version 1 Messages */
 
 /*
  * This message is used by the VSC to send the NDIS version to the VSP. The VSP
  * can use this information when handling OIDs sent by the VSC.
  */
 struct nvsp_1_message_send_ndis_version {
     u32 ndis_major_ver;
     u32 ndis_minor_ver;
 } __packed;
 
 /*
  * This message is used by the VSC to send a receive buffer to the VSP. The VSP
  * can then use the receive buffer to send data to the VSC.
  */
 struct nvsp_1_message_send_receive_buffer {
     u32 gpadl_handle;
     u16 id;
 } __packed;
 
 struct nvsp_1_receive_buffer_section {
     u32 offset;
     u32 sub_alloc_size;
     u32 num_sub_allocs;
     u32 end_offset;
 } __packed;
 
 /*
  * This message is used by the VSP to acknowledge a receive buffer send by the
  * VSC. This message must be sent by the VSP before the VSP uses the receive
  * buffer.
  */
 struct nvsp_1_message_send_receive_buffer_complete {
     u32 status;
     u32 num_sections;
 
     /*
      * The receive buffer is split into two parts, a large suballocation
      * section and a small suballocation section. These sections are then
      * suballocated by a certain size.
      */
 
     /*
      * For example, the following break up of the receive buffer has 6
      * large suballocations and 10 small suballocations.
      */
 
     /*
      * |            Large Section          |  |   Small Section   |
      * ------------------------------------------------------------
      * |     |     |     |     |     |     |  | | | | | | | | | | |
      * |                                      |
      *  LargeOffset                            SmallOffset
      */
 
     struct nvsp_1_receive_buffer_section sections[1];
 } __packed;
 
 /*
  * This message is sent by the VSC to revoke the receive buffer.  After the VSP
  * completes this transaction, the vsp should never use the receive buffer
  * again.
  */
 struct nvsp_1_message_revoke_receive_buffer {
     u16 id;
 };
 
 /*
  * This message is used by the VSC to send a send buffer to the VSP. The VSC
  * can then use the send buffer to send data to the VSP.
  */
 struct nvsp_1_message_send_send_buffer {
     u32 gpadl_handle;
     u16 id;
 } __packed;
 
 /*
  * This message is used by the VSP to acknowledge a send buffer sent by the
  * VSC. This message must be sent by the VSP before the VSP uses the sent
  * buffer.
  */
 struct nvsp_1_message_send_send_buffer_complete {
     u32 status;
 
     /*
      * The VSC gets to choose the size of the send buffer and the VSP gets
      * to choose the sections size of the buffer.  This was done to enable
      * dynamic reconfigurations when the cost of GPA-direct buffers
      * decreases.
      */
     u32 section_size;
 } __packed;
 
 /*
  * This message is sent by the VSC to revoke the send buffer.  After the VSP
  * completes this transaction, the vsp should never use the send buffer again.
  */
 struct nvsp_1_message_revoke_send_buffer {
     u16 id;
 };
 
 /*
  * This message is used by both the VSP and the VSC to send a RNDIS message to
  * the opposite channel endpoint.
  */
 struct nvsp_1_message_send_rndis_packet {
     /*
      * This field is specified by RNDIS. They assume there's two different
      * channels of communication. However, the Network VSP only has one.
      * Therefore, the channel travels with the RNDIS packet.
      */
     u32 channel_type;
 
     /*
      * This field is used to send part or all of the data through a send
      * buffer. This values specifies an index into the send buffer. If the
      * index is 0xFFFFFFFF, then the send buffer is not being used and all
      * of the data was sent through other VMBus mechanisms.
      */
     u32 send_buf_section_index;
     u32 send_buf_section_size;
 } __packed;
 
 /*
  * This message is used by both the VSP and the VSC to complete a RNDIS message
  * to the opposite channel endpoint. At this point, the initiator of this
  * message cannot use any resources associated with the original RNDIS packet.
  */
 struct nvsp_1_message_send_rndis_packet_complete {
     u32 status;
 };
 
 union nvsp_1_message_uber {
     struct nvsp_1_message_send_ndis_version send_ndis_ver;
 
     struct nvsp_1_message_send_receive_buffer send_recv_buf;
     struct nvsp_1_message_send_receive_buffer_complete
                         send_recv_buf_complete;
     struct nvsp_1_message_revoke_receive_buffer revoke_recv_buf;
 
     struct nvsp_1_message_send_send_buffer send_send_buf;
     struct nvsp_1_message_send_send_buffer_complete send_send_buf_complete;
     struct nvsp_1_message_revoke_send_buffer revoke_send_buf;
 
     struct nvsp_1_message_send_rndis_packet send_rndis_pkt;
     struct nvsp_1_message_send_rndis_packet_complete
                         send_rndis_pkt_complete;
 } __packed;
 
 
 /*
  * Network VSP protocol version 2 messages:
  */
 struct nvsp_2_vsc_capability {
     union {
         u64 data;
         struct {
             u64 vmq:1;
             u64 chimney:1;
             u64 sriov:1;
             u64 ieee8021q:1;
             u64 correlation_id:1;
             u64 teaming:1;
             u64 vsubnetid:1;
             u64 rsc:1;
         };
     };
 } __packed;
 
 struct nvsp_2_send_ndis_config {
     u32 mtu;
     u32 reserved;
     struct nvsp_2_vsc_capability capability;
 } __packed;
 
 /* Allocate receive buffer */
 struct nvsp_2_alloc_rxbuf {
     /* Allocation ID to match the allocation request and response */
     u32 alloc_id;
 
     /* Length of the VM shared memory receive buffer that needs to
      * be allocated
      */
     u32 len;
 } __packed;
 
 /* Allocate receive buffer complete */
 struct nvsp_2_alloc_rxbuf_comp {
     /* The NDIS_STATUS code for buffer allocation */
     u32 status;
 
     u32 alloc_id;
 
     /* GPADL handle for the allocated receive buffer */
     u32 gpadl_handle;
 
     /* Receive buffer ID */
     u64 recv_buf_id;
 } __packed;
 
 struct nvsp_2_free_rxbuf {
     u64 recv_buf_id;
 } __packed;
 
 union nvsp_2_message_uber {
     struct nvsp_2_send_ndis_config send_ndis_config;
     struct nvsp_2_alloc_rxbuf alloc_rxbuf;
     struct nvsp_2_alloc_rxbuf_comp alloc_rxbuf_comp;
     struct nvsp_2_free_rxbuf free_rxbuf;
 } __packed;
 
 struct nvsp_4_send_vf_association {
     /* 1: allocated, serial number is valid. 0: not allocated */
     u32 allocated;
 
     /* Serial number of the VF to team with */
     u32 serial;
 } __packed;
 
 enum nvsp_vm_datapath {
     NVSP_DATAPATH_SYNTHETIC = 0,
     NVSP_DATAPATH_VF,
     NVSP_DATAPATH_MAX
 };
 
 struct nvsp_4_sw_datapath {
     u32 active_datapath; /* active data path in VM */
 } __packed;
 
 union nvsp_4_message_uber {
     struct nvsp_4_send_vf_association vf_assoc;
     struct nvsp_4_sw_datapath active_dp;
 } __packed;
 
 enum nvsp_subchannel_operation {
     NVSP_SUBCHANNEL_NONE = 0,
     NVSP_SUBCHANNEL_ALLOCATE,
     NVSP_SUBCHANNEL_MAX
 };
 
 struct nvsp_5_subchannel_request {
     u32 op;
     u32 num_subchannels;
 } __packed;
 
 struct nvsp_5_subchannel_complete {
     u32 status;
     u32 num_subchannels; /* Actual number of subchannels allocated */
 } __packed;
 
 struct nvsp_5_send_indirect_table {
     /* The number of entries in the send indirection table */
     u32 count;
 
     /* The offset of the send indirection table from the beginning of
      * struct nvsp_message.
      * The send indirection table tells which channel to put the send
      * traffic on. Each entry is a channel number.
      */
     u32 offset;
 } __packed;
 
 union nvsp_5_message_uber {
     struct nvsp_5_subchannel_request subchn_req;
     struct nvsp_5_subchannel_complete subchn_comp;
     struct nvsp_5_send_indirect_table send_table;
 } __packed;
 
 enum nvsp_6_pd_api_op {
     PD_API_OP_CONFIG = 1,
     PD_API_OP_SW_DATAPATH, /* Switch Datapath */
     PD_API_OP_OPEN_PROVIDER,
     PD_API_OP_CLOSE_PROVIDER,
     PD_API_OP_CREATE_QUEUE,
     PD_API_OP_FLUSH_QUEUE,
     PD_API_OP_FREE_QUEUE,
     PD_API_OP_ALLOC_COM_BUF, /* Allocate Common Buffer */
     PD_API_OP_FREE_COM_BUF, /* Free Common Buffer */
     PD_API_OP_MAX
 };
 
 struct grp_affinity {
     u64 mask;
     u16 grp;
     u16 reserved[3];
 } __packed;
 
 struct nvsp_6_pd_api_req {
     u32 op;
 
     union {
         /* MMIO information is sent from the VM to VSP */
         struct __packed {
             u64 mmio_pa; /* MMIO Physical Address */
             u32 mmio_len;
 
             /* Number of PD queues a VM can support */
             u16 num_subchn;
         } config;
 
         /* Switch Datapath */
         struct __packed {
             /* Host Datapath Is PacketDirect */
             u8 host_dpath_is_pd;
 
             /* Guest PacketDirect Is Enabled */
             u8 guest_pd_enabled;
         } sw_dpath;
 
         /* Open Provider*/
         struct __packed {
             u32 prov_id; /* Provider id */
             u32 flag;
         } open_prov;
 
         /* Close Provider */
         struct __packed {
             u32 prov_id;
         } cls_prov;
 
         /* Create Queue*/
         struct __packed {
             u32 prov_id;
             u16 q_id;
             u16 q_size;
             u8 is_recv_q;
             u8 is_rss_q;
             u32 recv_data_len;
             struct grp_affinity affy;
         } cr_q;
 
         /* Delete Queue*/
         struct __packed {
             u32 prov_id;
             u16 q_id;
         } del_q;
 
         /* Flush Queue */
         struct __packed {
             u32 prov_id;
             u16 q_id;
         } flush_q;
 
         /* Allocate Common Buffer */
         struct __packed {
             u32 len;
             u32 pf_node; /* Preferred Node */
             u16 region_id;
         } alloc_com_buf;
 
         /* Free Common Buffer */
         struct __packed {
             u32 len;
             u64 pa; /* Physical Address */
             u32 pf_node; /* Preferred Node */
             u16 region_id;
             u8 cache_type;
         } free_com_buf;
     } __packed;
 } __packed;
 
 struct nvsp_6_pd_api_comp {
     u32 op;
     u32 status;
 
     union {
         struct __packed {
             /* actual number of PD queues allocated to the VM */
             u16 num_pd_q;
 
             /* Num Receive Rss PD Queues */
             u8 num_rss_q;
 
             u8 is_supported; /* Is supported by VSP */
             u8 is_enabled; /* Is enabled by VSP */
         } config;
 
         /* Open Provider */
         struct __packed {
             u32 prov_id;
         } open_prov;
 
         /* Create Queue */
         struct __packed {
             u32 prov_id;
             u16 q_id;
             u16 q_size;
             u32 recv_data_len;
             struct grp_affinity affy;
         } cr_q;
 
         /* Allocate Common Buffer */
         struct __packed {
             u64 pa; /* Physical Address */
             u32 len;
             u32 pf_node; /* Preferred Node */
             u16 region_id;
             u8 cache_type;
         } alloc_com_buf;
     } __packed;
 } __packed;
 
 struct nvsp_6_pd_buf {
     u32 region_offset;
     u16 region_id;
     u16 is_partial:1;
     u16 reserved:15;
 } __packed;
 
 struct nvsp_6_pd_batch_msg {
     struct nvsp_message_header hdr;
     u16 count;
     u16 guest2host:1;
     u16 is_recv:1;
     u16 reserved:14;
     struct nvsp_6_pd_buf pd_buf[0];
 } __packed;
 
 union nvsp_6_message_uber {
     struct nvsp_6_pd_api_req pd_req;
     struct nvsp_6_pd_api_comp pd_comp;
 } __packed;
 
 union nvsp_all_messages {
     union nvsp_message_init_uber init_msg;
     union nvsp_1_message_uber v1_msg;
     union nvsp_2_message_uber v2_msg;
     union nvsp_4_message_uber v4_msg;
     union nvsp_5_message_uber v5_msg;
     union nvsp_6_message_uber v6_msg;
 } __packed;
 
 /* ALL Messages */
 struct nvsp_message {
     struct nvsp_message_header hdr;
     union nvsp_all_messages msg;
 } __packed;
 
 
 #define NETVSC_MTU 65535
 #define NETVSC_MTU_MIN ETH_MIN_MTU
 
 /* Max buffer sizes allowed by a host */
 #define NETVSC_RECEIVE_BUFFER_SIZE      (1024 * 1024 * 31) /* 31MB */
 #define NETVSC_RECEIVE_BUFFER_SIZE_LEGACY   (1024 * 1024 * 15) /* 15MB */
 #define NETVSC_RECEIVE_BUFFER_DEFAULT       (1024 * 1024 * 16)
 
 #define NETVSC_SEND_BUFFER_SIZE         (1024 * 1024 * 15)  /* 15MB */
 #define NETVSC_SEND_BUFFER_DEFAULT      (1024 * 1024)
 
 #define NETVSC_INVALID_INDEX            -1
 
 #define NETVSC_SEND_SECTION_SIZE        6144
 #define NETVSC_RECV_SECTION_SIZE        1728
 
 /* Default size of TX buf: 1MB, RX buf: 16MB */
 #define NETVSC_MIN_TX_SECTIONS  10
 #define NETVSC_DEFAULT_TX   (NETVSC_SEND_BUFFER_DEFAULT \
                  / NETVSC_SEND_SECTION_SIZE)
 #define NETVSC_MIN_RX_SECTIONS  10
 #define NETVSC_DEFAULT_RX   (NETVSC_RECEIVE_BUFFER_DEFAULT \
                  / NETVSC_RECV_SECTION_SIZE)
 
 #define NETVSC_RECEIVE_BUFFER_ID        0xcafe
 #define NETVSC_SEND_BUFFER_ID           0
 
 #define NETVSC_SUPPORTED_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | \
                       NETIF_F_TSO | NETIF_F_IPV6_CSUM | \
                       NETIF_F_TSO6 | NETIF_F_LRO | \
                       NETIF_F_SG | NETIF_F_RXHASH)
 
 #define VRSS_SEND_TAB_SIZE 16  /* must be power of 2 */
 #define VRSS_CHANNEL_MAX 64
 #define VRSS_CHANNEL_DEFAULT 8
 
 #define RNDIS_MAX_PKT_DEFAULT 8
 #define RNDIS_PKT_ALIGN_DEFAULT 8
 
 #define NETVSC_XDP_HDRM 256
 
 #define NETVSC_MIN_OUT_MSG_SIZE (sizeof(struct vmpacket_descriptor) + \
                  sizeof(struct nvsp_message))
 #define NETVSC_MIN_IN_MSG_SIZE sizeof(struct vmpacket_descriptor)
 
 /* Estimated requestor size:
  * out_ring_size/min_out_msg_size + in_ring_size/min_in_msg_size
  */
 static inline u32 netvsc_rqstor_size(unsigned long ringbytes)
 {
     return ringbytes / NETVSC_MIN_OUT_MSG_SIZE +
         ringbytes / NETVSC_MIN_IN_MSG_SIZE;
 }
 
 /* XFER PAGE packets can specify a maximum of 375 ranges for NDIS >= 6.0
  * and a maximum of 64 ranges for NDIS < 6.0 with no RSC; with RSC, this
  * limit is raised to 562 (= NVSP_RSC_MAX).
  */
 #define NETVSC_MAX_XFER_PAGE_RANGES NVSP_RSC_MAX
 #define NETVSC_XFER_HEADER_SIZE(rng_cnt) \
         (offsetof(struct vmtransfer_page_packet_header, ranges) + \
         (rng_cnt) * sizeof(struct vmtransfer_page_range))
 #define NETVSC_MAX_PKT_SIZE (NETVSC_XFER_HEADER_SIZE(NETVSC_MAX_XFER_PAGE_RANGES) + \
         sizeof(struct nvsp_message) + (sizeof(u32) * VRSS_SEND_TAB_SIZE))
 
 struct multi_send_data {
     struct sk_buff *skb; /* skb containing the pkt */
     struct hv_netvsc_packet *pkt; /* netvsc pkt pending */
     u32 count; /* counter of batched packets */
 };
 
 struct recv_comp_data {
     u64 tid; /* transaction id */
     u32 status;
 };
 
 struct multi_recv_comp {
     struct recv_comp_data *slots;
     u32 first;  /* first data entry */
     u32 next;   /* next entry for writing */
 };
 
 #define NVSP_RSC_MAX 562 /* Max #RSC frags in a vmbus xfer page pkt */
 
 struct nvsc_rsc {
     struct ndis_pkt_8021q_info vlan;
     struct ndis_tcp_ip_checksum_info csum_info;
     u32 hash_info;
     u8 ppi_flags; /* valid/present bits for the above PPIs */
     u8 is_last; /* last RNDIS msg in a vmtransfer_page */
     u32 cnt; /* #fragments in an RSC packet */
     u32 pktlen; /* Full packet length */
     void *data[NVSP_RSC_MAX];
     u32 len[NVSP_RSC_MAX];
 };
 
 #define NVSC_RSC_VLAN       BIT(0)  /* valid/present bit for 'vlan' */
 #define NVSC_RSC_CSUM_INFO  BIT(1)  /* valid/present bit for 'csum_info' */
 #define NVSC_RSC_HASH_INFO  BIT(2)  /* valid/present bit for 'hash_info' */
 
 struct netvsc_stats_tx {
     u64 packets;
     u64 bytes;
     u64 xdp_xmit;
     struct u64_stats_sync syncp;
 };
 
 struct netvsc_stats_rx {
     u64 packets;
     u64 bytes;
     u64 broadcast;
     u64 multicast;
     u64 xdp_drop;
     u64 xdp_redirect;
     u64 xdp_tx;
     struct u64_stats_sync syncp;
 };
 
 struct netvsc_ethtool_stats {
     unsigned long tx_scattered;
     unsigned long tx_no_memory;
     unsigned long tx_no_space;
     unsigned long tx_too_big;
     unsigned long tx_busy;
     unsigned long tx_send_full;
     unsigned long rx_comp_busy;
     unsigned long rx_no_memory;
     unsigned long stop_queue;
     unsigned long wake_queue;
     unsigned long vlan_error;
 };
 
 struct netvsc_ethtool_pcpu_stats {
     u64     rx_packets;
     u64     rx_bytes;
     u64     tx_packets;
     u64     tx_bytes;
     u64     vf_rx_packets;
     u64     vf_rx_bytes;
     u64     vf_tx_packets;
     u64     vf_tx_bytes;
 };
 
 struct netvsc_vf_pcpu_stats {
     u64     rx_packets;
     u64     rx_bytes;
     u64     tx_packets;
     u64     tx_bytes;
     struct u64_stats_sync   syncp;
     u32 tx_dropped;
 };
 
 struct netvsc_reconfig {
     struct list_head list;
     u32 event;
 };
 
 /* L4 hash bits for different protocols */
 #define HV_TCP4_L4HASH 1
 #define HV_TCP6_L4HASH 2
 #define HV_UDP4_L4HASH 4
 #define HV_UDP6_L4HASH 8
 #define HV_DEFAULT_L4HASH (HV_TCP4_L4HASH | HV_TCP6_L4HASH | HV_UDP4_L4HASH | \
                HV_UDP6_L4HASH)
 
 /* The context of the netvsc device  */
 struct net_device_context {
     /* point back to our device context */
     struct hv_device *device_ctx;
     /* netvsc_device */
     struct netvsc_device __rcu *nvdev;
     /* list of netvsc net_devices */
     struct list_head list;
     /* reconfigure work */
     struct delayed_work dwork;
     /* last reconfig time */
     unsigned long last_reconfig;
     /* reconfig events */
     struct list_head reconfig_events;
     /* list protection */
     spinlock_t lock;
 
     u32 msg_enable; /* debug level */
 
     u32 tx_checksum_mask;
 
     u32 tx_table[VRSS_SEND_TAB_SIZE];
 
     u16 rx_table[ITAB_NUM];
 
     /* Ethtool settings */
     u8 duplex;
     u32 speed;
     u32 l4_hash; /* L4 hash settings */
     struct netvsc_ethtool_stats eth_stats;
 
     /* State to manage the associated VF interface. */
     struct net_device __rcu *vf_netdev;
     struct netvsc_vf_pcpu_stats __percpu *vf_stats;
     struct delayed_work vf_takeover;
 
     /* 1: allocated, serial number is valid. 0: not allocated */
     u32 vf_alloc;
     /* Serial number of the VF to team with */
     u32 vf_serial;
 
     /* Is the current data path through the VF NIC? */
     bool  data_path_is_vf;
 
     /* Used to temporarily save the config info across hibernation */
     struct netvsc_device_info *saved_netvsc_dev_info;
 };
 
 /* Azure hosts don't support non-TCP port numbers in hashing for fragmented
  * packets. We can use ethtool to change UDP hash level when necessary.
  */
 static inline u32 netvsc_get_hash(struct sk_buff *skb,
                   const struct net_device_context *ndc)
 {
     struct flow_keys flow;
     u32 hash, pkt_proto = 0;
     static u32 hashrnd __read_mostly;
 
     net_get_random_once(&hashrnd, sizeof(hashrnd));
 
     if (!skb_flow_dissect_flow_keys(skb, &flow, 0))
         return 0;
 
     switch (flow.basic.ip_proto) {
     case IPPROTO_TCP:
         if (flow.basic.n_proto == htons(ETH_P_IP))
             pkt_proto = HV_TCP4_L4HASH;
         else if (flow.basic.n_proto == htons(ETH_P_IPV6))
             pkt_proto = HV_TCP6_L4HASH;
 
         break;
 
     case IPPROTO_UDP:
         if (flow.basic.n_proto == htons(ETH_P_IP))
             pkt_proto = HV_UDP4_L4HASH;
         else if (flow.basic.n_proto == htons(ETH_P_IPV6))
             pkt_proto = HV_UDP6_L4HASH;
 
         break;
     }
 
     if (pkt_proto & ndc->l4_hash) {
         return skb_get_hash(skb);
     } else {
         if (flow.basic.n_proto == htons(ETH_P_IP))
             hash = jhash2((u32 *)&flow.addrs.v4addrs, 2, hashrnd);
         else if (flow.basic.n_proto == htons(ETH_P_IPV6))
             hash = jhash2((u32 *)&flow.addrs.v6addrs, 8, hashrnd);
         else
             return 0;
 
         __skb_set_sw_hash(skb, hash, false);
     }
 
     return hash;
 }
 
 /* Per channel data */
 struct netvsc_channel {
     struct vmbus_channel *channel;
     struct netvsc_device *net_device;
     void *recv_buf; /* buffer to copy packets out from the receive buffer */
     const struct vmpacket_descriptor *desc;
     struct napi_struct napi;
     struct multi_send_data msd;
     struct multi_recv_comp mrc;
     atomic_t queue_sends;
     struct nvsc_rsc rsc;
 
     struct bpf_prog __rcu *bpf_prog;
     struct xdp_rxq_info xdp_rxq;
     bool xdp_flush;
 
     struct netvsc_stats_tx tx_stats;
     struct netvsc_stats_rx rx_stats;
 };
 
 /* Per netvsc device */
 struct netvsc_device {
     u32 nvsp_version;
 
     wait_queue_head_t wait_drain;
     bool destroy;
     bool tx_disable; /* if true, do not wake up queue again */
 
     /* Receive buffer allocated by us but manages by NetVSP */
     void *recv_buf;
     void *recv_original_buf;
     u32 recv_buf_size; /* allocated bytes */
     struct vmbus_gpadl recv_buf_gpadl_handle;
     u32 recv_section_cnt;
     u32 recv_section_size;
     u32 recv_completion_cnt;
 
     /* Send buffer allocated by us */
     void *send_buf;
     void *send_original_buf;
     u32 send_buf_size;
     struct vmbus_gpadl send_buf_gpadl_handle;
     u32 send_section_cnt;
     u32 send_section_size;
     unsigned long *send_section_map;
 
     /* Used for NetVSP initialization protocol */
     struct completion channel_init_wait;
     struct nvsp_message channel_init_pkt;
 
     struct nvsp_message revoke_packet;
 
     u32 max_chn;
     u32 num_chn;
 
     atomic_t open_chn;
     struct work_struct subchan_work;
     wait_queue_head_t subchan_open;
 
     struct rndis_device *extension;
 
     u32 max_pkt; /* max number of pkt in one send, e.g. 8 */
     u32 pkt_align; /* alignment bytes, e.g. 8 */
 
     struct netvsc_channel chan_table[VRSS_CHANNEL_MAX];
 
     struct rcu_head rcu;
 };
 
 /* NdisInitialize message */
 struct rndis_initialize_request {
     u32 req_id;
     u32 major_ver;
     u32 minor_ver;
     u32 max_xfer_size;
 };
 
 /* Response to NdisInitialize */
 struct rndis_initialize_complete {
     u32 req_id;
     u32 status;
     u32 major_ver;
     u32 minor_ver;
     u32 dev_flags;
     u32 medium;
     u32 max_pkt_per_msg;
     u32 max_xfer_size;
     u32 pkt_alignment_factor;
     u32 af_list_offset;
     u32 af_list_size;
 };
 
 /* Call manager devices only: Information about an address family */
 /* supported by the device is appended to the response to NdisInitialize. */
 struct rndis_co_address_family {
     u32 address_family;
     u32 major_ver;
     u32 minor_ver;
 };
 
 /* NdisHalt message */
 struct rndis_halt_request {
     u32 req_id;
 };
 
 /* NdisQueryRequest message */
 struct rndis_query_request {
     u32 req_id;
     u32 oid;
     u32 info_buflen;
     u32 info_buf_offset;
     u32 dev_vc_handle;
 };
 
 /* Response to NdisQueryRequest */
 struct rndis_query_complete {
     u32 req_id;
     u32 status;
     u32 info_buflen;
     u32 info_buf_offset;
 };
 
 /* NdisSetRequest message */
 struct rndis_set_request {
     u32 req_id;
     u32 oid;
     u32 info_buflen;
     u32 info_buf_offset;
     u32 dev_vc_handle;
     u8  info_buf[];
 };
 
 /* Response to NdisSetRequest */
 struct rndis_set_complete {
     u32 req_id;
     u32 status;
 };
 
 /* NdisReset message */
 struct rndis_reset_request {
     u32 reserved;
 };
 
 /* Response to NdisReset */
 struct rndis_reset_complete {
     u32 status;
     u32 addressing_reset;
 };
 
 /* NdisMIndicateStatus message */
 struct rndis_indicate_status {
     u32 status;
     u32 status_buflen;
     u32 status_buf_offset;
 };
 
 /* Diagnostic information passed as the status buffer in */
 /* struct rndis_indicate_status messages signifying error conditions. */
 struct rndis_diagnostic_info {
     u32 diag_status;
     u32 error_offset;
 };
 
 /* NdisKeepAlive message */
 struct rndis_keepalive_request {
     u32 req_id;
 };
 
 /* Response to NdisKeepAlive */
 struct rndis_keepalive_complete {
     u32 req_id;
     u32 status;
 };
 
 /*
  * Data message. All Offset fields contain byte offsets from the beginning of
  * struct rndis_packet. All Length fields are in bytes.  VcHandle is set
  * to 0 for connectionless data, otherwise it contains the VC handle.
  */
 struct rndis_packet {
     u32 data_offset;
     u32 data_len;
     u32 oob_data_offset;
     u32 oob_data_len;
     u32 num_oob_data_elements;
     u32 per_pkt_info_offset;
     u32 per_pkt_info_len;
     u32 vc_handle;
     u32 reserved;
 };
 
 /* Optional Out of Band data associated with a Data message. */
 struct rndis_oobd {
     u32 size;
     u32 type;
     u32 class_info_offset;
 };
 
 /* Packet extension field contents associated with a Data message. */
 struct rndis_per_packet_info {
     u32 size;
     u32 type:31;
     u32 internal:1;
     u32 ppi_offset;
 };
 
 enum ndis_per_pkt_info_type {
     TCPIP_CHKSUM_PKTINFO,
     IPSEC_PKTINFO,
     TCP_LARGESEND_PKTINFO,
     CLASSIFICATION_HANDLE_PKTINFO,
     NDIS_RESERVED,
     SG_LIST_PKTINFO,
     IEEE_8021Q_INFO,
     ORIGINAL_PKTINFO,
     PACKET_CANCEL_ID,
     NBL_HASH_VALUE = PACKET_CANCEL_ID,
     ORIGINAL_NET_BUFLIST,
     CACHED_NET_BUFLIST,
     SHORT_PKT_PADINFO,
     MAX_PER_PKT_INFO
 };
 
 enum rndis_per_pkt_info_interal_type {
     RNDIS_PKTINFO_ID = 1,
     /* Add more members here */
 
     RNDIS_PKTINFO_MAX
 };
 
 #define RNDIS_PKTINFO_SUBALLOC BIT(0)
 #define RNDIS_PKTINFO_1ST_FRAG BIT(1)
 #define RNDIS_PKTINFO_LAST_FRAG BIT(2)
 
 #define RNDIS_PKTINFO_ID_V1 1
 
 struct rndis_pktinfo_id {
     u8 ver;
     u8 flag;
     u16 pkt_id;
 };
 
 struct ndis_object_header {
     u8 type;
     u8 revision;
     u16 size;
 };
 
 #define NDIS_OBJECT_TYPE_DEFAULT    0x80
 #define NDIS_OFFLOAD_PARAMETERS_REVISION_3 3
 #define NDIS_OFFLOAD_PARAMETERS_REVISION_2 2
 #define NDIS_OFFLOAD_PARAMETERS_REVISION_1 1
 
 #define NDIS_OFFLOAD_PARAMETERS_NO_CHANGE 0
 #define NDIS_OFFLOAD_PARAMETERS_LSOV2_DISABLED 1
 #define NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED  2
 #define NDIS_OFFLOAD_PARAMETERS_LSOV1_ENABLED  2
 #define NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED 1
 #define NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED 2
 #define NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED 1
 #define NDIS_OFFLOAD_PARAMETERS_TX_ENABLED_RX_DISABLED 2
 #define NDIS_OFFLOAD_PARAMETERS_RX_ENABLED_TX_DISABLED 3
 #define NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED 4
 
 #define NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE 1
 #define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV4    0
 #define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV6    1
 
 #define VERSION_4_OFFLOAD_SIZE          22
 /*
  * New offload OIDs for NDIS 6
  */
 #define OID_TCP_OFFLOAD_CURRENT_CONFIG 0xFC01020B /* query only */
 #define OID_TCP_OFFLOAD_PARAMETERS 0xFC01020C       /* set only */
 #define OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020D/* query only */
 #define OID_TCP_CONNECTION_OFFLOAD_CURRENT_CONFIG 0xFC01020E /* query only */
 #define OID_TCP_CONNECTION_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020F /* query */
 #define OID_OFFLOAD_ENCAPSULATION 0x0101010A /* set/query */
 
 /*
  * OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES
  * ndis_type: NDIS_OBJTYPE_OFFLOAD
  */
 
 #define NDIS_OFFLOAD_ENCAP_NONE     0x0000
 #define NDIS_OFFLOAD_ENCAP_NULL     0x0001
 #define NDIS_OFFLOAD_ENCAP_8023     0x0002
 #define NDIS_OFFLOAD_ENCAP_8023PQ   0x0004
 #define NDIS_OFFLOAD_ENCAP_8023PQ_OOB   0x0008
 #define NDIS_OFFLOAD_ENCAP_RFC1483  0x0010
 
 struct ndis_csum_offload {
     u32 ip4_txenc;
     u32 ip4_txcsum;
 #define NDIS_TXCSUM_CAP_IP4OPT      0x001
 #define NDIS_TXCSUM_CAP_TCP4OPT     0x004
 #define NDIS_TXCSUM_CAP_TCP4        0x010
 #define NDIS_TXCSUM_CAP_UDP4        0x040
 #define NDIS_TXCSUM_CAP_IP4     0x100
 
 #define NDIS_TXCSUM_ALL_TCP4    (NDIS_TXCSUM_CAP_TCP4 | NDIS_TXCSUM_CAP_TCP4OPT)
 
     u32 ip4_rxenc;
     u32 ip4_rxcsum;
 #define NDIS_RXCSUM_CAP_IP4OPT      0x001
 #define NDIS_RXCSUM_CAP_TCP4OPT     0x004
 #define NDIS_RXCSUM_CAP_TCP4        0x010
 #define NDIS_RXCSUM_CAP_UDP4        0x040
 #define NDIS_RXCSUM_CAP_IP4     0x100
     u32 ip6_txenc;
     u32 ip6_txcsum;
 #define NDIS_TXCSUM_CAP_IP6EXT      0x001
 #define NDIS_TXCSUM_CAP_TCP6OPT     0x004
 #define NDIS_TXCSUM_CAP_TCP6        0x010
 #define NDIS_TXCSUM_CAP_UDP6        0x040
     u32 ip6_rxenc;
     u32 ip6_rxcsum;
 #define NDIS_RXCSUM_CAP_IP6EXT      0x001
 #define NDIS_RXCSUM_CAP_TCP6OPT     0x004
 #define NDIS_RXCSUM_CAP_TCP6        0x010
 #define NDIS_RXCSUM_CAP_UDP6        0x040
 
 #define NDIS_TXCSUM_ALL_TCP6    (NDIS_TXCSUM_CAP_TCP6 |     \
                  NDIS_TXCSUM_CAP_TCP6OPT |  \
                  NDIS_TXCSUM_CAP_IP6EXT)
 };
 
 struct ndis_lsov1_offload {
     u32 encap;
     u32 maxsize;
     u32 minsegs;
     u32 opts;
 };
 
 struct ndis_ipsecv1_offload {
     u32 encap;
     u32 ah_esp;
     u32 xport_tun;
     u32 ip4_opts;
     u32 flags;
     u32 ip4_ah;
     u32 ip4_esp;
 };
 
 struct ndis_lsov2_offload {
     u32 ip4_encap;
     u32 ip4_maxsz;
     u32 ip4_minsg;
     u32 ip6_encap;
     u32 ip6_maxsz;
     u32 ip6_minsg;
     u32 ip6_opts;
 #define NDIS_LSOV2_CAP_IP6EXT       0x001
 #define NDIS_LSOV2_CAP_TCP6OPT      0x004
 
 #define NDIS_LSOV2_CAP_IP6      (NDIS_LSOV2_CAP_IP6EXT | \
                      NDIS_LSOV2_CAP_TCP6OPT)
 };
 
 struct ndis_ipsecv2_offload {
     u32 encap;
     u8  ip6;
     u8  ip4opt;
     u8  ip6ext;
     u8  ah;
     u8  esp;
     u8  ah_esp;
     u8  xport;
     u8  tun;
     u8  xport_tun;
     u8  lso;
     u8  extseq;
     u32 udp_esp;
     u32 auth;
     u32 crypto;
     u32 sa_caps;
 };
 
 struct ndis_rsc_offload {
     u8  ip4;
     u8  ip6;
 };
 
 struct ndis_encap_offload {
     u32 flags;
     u32 maxhdr;
 };
 
 struct ndis_offload {
     struct ndis_object_header   header;
     struct ndis_csum_offload    csum;
     struct ndis_lsov1_offload   lsov1;
     struct ndis_ipsecv1_offload ipsecv1;
     struct ndis_lsov2_offload   lsov2;
     u32             flags;
     /* NDIS >= 6.1 */
     struct ndis_ipsecv2_offload ipsecv2;
     /* NDIS >= 6.30 */
     struct ndis_rsc_offload     rsc;
     struct ndis_encap_offload   encap_gre;
 };
 
 #define NDIS_OFFLOAD_SIZE       sizeof(struct ndis_offload)
 #define NDIS_OFFLOAD_SIZE_6_0       offsetof(struct ndis_offload, ipsecv2)
 #define NDIS_OFFLOAD_SIZE_6_1       offsetof(struct ndis_offload, rsc)
 
 struct ndis_offload_params {
     struct ndis_object_header header;
     u8 ip_v4_csum;
     u8 tcp_ip_v4_csum;
     u8 udp_ip_v4_csum;
     u8 tcp_ip_v6_csum;
     u8 udp_ip_v6_csum;
     u8 lso_v1;
     u8 ip_sec_v1;
     u8 lso_v2_ipv4;
     u8 lso_v2_ipv6;
     u8 tcp_connection_ip_v4;
     u8 tcp_connection_ip_v6;
     u32 flags;
     u8 ip_sec_v2;
     u8 ip_sec_v2_ip_v4;
     struct {
         u8 rsc_ip_v4;
         u8 rsc_ip_v6;
     };
     struct {
         u8 encapsulated_packet_task_offload;
         u8 encapsulation_types;
     };
 };
 
 struct ndis_tcp_lso_info {
     union {
         struct {
             u32 unused:30;
             u32 type:1;
             u32 reserved2:1;
         } transmit;
         struct {
             u32 mss:20;
             u32 tcp_header_offset:10;
             u32 type:1;
             u32 reserved2:1;
         } lso_v1_transmit;
         struct {
             u32 tcp_payload:30;
             u32 type:1;
             u32 reserved2:1;
         } lso_v1_transmit_complete;
         struct {
             u32 mss:20;
             u32 tcp_header_offset:10;
             u32 type:1;
             u32 ip_version:1;
         } lso_v2_transmit;
         struct {
             u32 reserved:30;
             u32 type:1;
             u32 reserved2:1;
         } lso_v2_transmit_complete;
         u32  value;
     };
 };
 
 #define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
         sizeof(struct ndis_pkt_8021q_info))
 
 #define NDIS_CSUM_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
         sizeof(struct ndis_tcp_ip_checksum_info))
 
 #define NDIS_LSO_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
         sizeof(struct ndis_tcp_lso_info))
 
 #define NDIS_HASH_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
         sizeof(u32))
 
 /* Total size of all PPI data */
 #define NDIS_ALL_PPI_SIZE (NDIS_VLAN_PPI_SIZE + NDIS_CSUM_PPI_SIZE + \
                NDIS_LSO_PPI_SIZE + NDIS_HASH_PPI_SIZE)
 
 /* Format of Information buffer passed in a SetRequest for the OID */
 /* OID_GEN_RNDIS_CONFIG_PARAMETER. */
 struct rndis_config_parameter_info {
     u32 parameter_name_offset;
     u32 parameter_name_length;
     u32 parameter_type;
     u32 parameter_value_offset;
     u32 parameter_value_length;
 };
 
 /* Values for ParameterType in struct rndis_config_parameter_info */
 #define RNDIS_CONFIG_PARAM_TYPE_INTEGER     0
 #define RNDIS_CONFIG_PARAM_TYPE_STRING      2
 
 /* CONDIS Miniport messages for connection oriented devices */
 /* that do not implement a call manager. */
 
 /* CoNdisMiniportCreateVc message */
 struct rcondis_mp_create_vc {
     u32 req_id;
     u32 ndis_vc_handle;
 };
 
 /* Response to CoNdisMiniportCreateVc */
 struct rcondis_mp_create_vc_complete {
     u32 req_id;
     u32 dev_vc_handle;
     u32 status;
 };
 
 /* CoNdisMiniportDeleteVc message */
 struct rcondis_mp_delete_vc {
     u32 req_id;
     u32 dev_vc_handle;
 };
 
 /* Response to CoNdisMiniportDeleteVc */
 struct rcondis_mp_delete_vc_complete {
     u32 req_id;
     u32 status;
 };
 
 /* CoNdisMiniportQueryRequest message */
 struct rcondis_mp_query_request {
     u32 req_id;
     u32 request_type;
     u32 oid;
     u32 dev_vc_handle;
     u32 info_buflen;
     u32 info_buf_offset;
 };
 
 /* CoNdisMiniportSetRequest message */
 struct rcondis_mp_set_request {
     u32 req_id;
     u32 request_type;
     u32 oid;
     u32 dev_vc_handle;
     u32 info_buflen;
     u32 info_buf_offset;
 };
 
 /* CoNdisIndicateStatus message */
 struct rcondis_indicate_status {
     u32 ndis_vc_handle;
     u32 status;
     u32 status_buflen;
     u32 status_buf_offset;
 };
 
 /* CONDIS Call/VC parameters */
 struct rcondis_specific_parameters {
     u32 parameter_type;
     u32 parameter_length;
     u32 parameter_lffset;
 };
 
 struct rcondis_media_parameters {
     u32 flags;
     u32 reserved1;
     u32 reserved2;
     struct rcondis_specific_parameters media_specific;
 };
 
 struct rndis_flowspec {
     u32 token_rate;
     u32 token_bucket_size;
     u32 peak_bandwidth;
     u32 latency;
     u32 delay_variation;
     u32 service_type;
     u32 max_sdu_size;
     u32 minimum_policed_size;
 };
 
 struct rcondis_call_manager_parameters {
     struct rndis_flowspec transmit;
     struct rndis_flowspec receive;
     struct rcondis_specific_parameters call_mgr_specific;
 };
 
 /* CoNdisMiniportActivateVc message */
 struct rcondis_mp_activate_vc_request {
     u32 req_id;
     u32 flags;
     u32 dev_vc_handle;
     u32 media_params_offset;
     u32 media_params_length;
     u32 call_mgr_params_offset;
     u32 call_mgr_params_length;
 };
 
 /* Response to CoNdisMiniportActivateVc */
 struct rcondis_mp_activate_vc_complete {
     u32 req_id;
     u32 status;
 };
 
 /* CoNdisMiniportDeactivateVc message */
 struct rcondis_mp_deactivate_vc_request {
     u32 req_id;
     u32 flags;
     u32 dev_vc_handle;
 };
 
 /* Response to CoNdisMiniportDeactivateVc */
 struct rcondis_mp_deactivate_vc_complete {
     u32 req_id;
     u32 status;
 };
 
 
 /* union with all of the RNDIS messages */
 union rndis_message_container {
     struct rndis_packet pkt;
     struct rndis_initialize_request init_req;
     struct rndis_halt_request halt_req;
     struct rndis_query_request query_req;
     struct rndis_set_request set_req;
     struct rndis_reset_request reset_req;
     struct rndis_keepalive_request keep_alive_req;
     struct rndis_indicate_status indicate_status;
     struct rndis_initialize_complete init_complete;
     struct rndis_query_complete query_complete;
     struct rndis_set_complete set_complete;
     struct rndis_reset_complete reset_complete;
     struct rndis_keepalive_complete keep_alive_complete;
     struct rcondis_mp_create_vc co_miniport_create_vc;
     struct rcondis_mp_delete_vc co_miniport_delete_vc;
     struct rcondis_indicate_status co_indicate_status;
     struct rcondis_mp_activate_vc_request co_miniport_activate_vc;
     struct rcondis_mp_deactivate_vc_request co_miniport_deactivate_vc;
     struct rcondis_mp_create_vc_complete co_miniport_create_vc_complete;
     struct rcondis_mp_delete_vc_complete co_miniport_delete_vc_complete;
     struct rcondis_mp_activate_vc_complete co_miniport_activate_vc_complete;
     struct rcondis_mp_deactivate_vc_complete
         co_miniport_deactivate_vc_complete;
 };
 
 /* Remote NDIS message format */
 struct rndis_message {
     u32 ndis_msg_type;
 
     /* Total length of this message, from the beginning */
     /* of the struct rndis_message, in bytes. */
     u32 msg_len;
 
     /* Actual message */
     union rndis_message_container msg;
 };
 
 
 /* Handy macros */
 
 /* get the size of an RNDIS message. Pass in the message type, */
 /* struct rndis_set_request, struct rndis_packet for example */
 #define RNDIS_MESSAGE_SIZE(msg)             \
     (sizeof(msg) + (sizeof(struct rndis_message) -  \
      sizeof(union rndis_message_container)))
 
 #define RNDIS_HEADER_SIZE   (sizeof(struct rndis_message) - \
                  sizeof(union rndis_message_container))
 
 #define RNDIS_AND_PPI_SIZE (sizeof(struct rndis_message) + NDIS_ALL_PPI_SIZE)
 
 #define NDIS_PACKET_TYPE_DIRECTED   0x00000001
 #define NDIS_PACKET_TYPE_MULTICAST  0x00000002
 #define NDIS_PACKET_TYPE_ALL_MULTICAST  0x00000004
 #define NDIS_PACKET_TYPE_BROADCAST  0x00000008
 #define NDIS_PACKET_TYPE_SOURCE_ROUTING 0x00000010
 #define NDIS_PACKET_TYPE_PROMISCUOUS    0x00000020
 #define NDIS_PACKET_TYPE_SMT        0x00000040
 #define NDIS_PACKET_TYPE_ALL_LOCAL  0x00000080
 #define NDIS_PACKET_TYPE_GROUP      0x00000100
 #define NDIS_PACKET_TYPE_ALL_FUNCTIONAL 0x00000200
 #define NDIS_PACKET_TYPE_FUNCTIONAL 0x00000400
 #define NDIS_PACKET_TYPE_MAC_FRAME  0x00000800
 
 #define TRANSPORT_INFO_NOT_IP   0
 #define TRANSPORT_INFO_IPV4_TCP 0x01
 #define TRANSPORT_INFO_IPV4_UDP 0x02
 #define TRANSPORT_INFO_IPV6_TCP 0x10
 #define TRANSPORT_INFO_IPV6_UDP 0x20
 
 #define RETRY_US_LO 5000
 #define RETRY_US_HI 10000
 #define RETRY_MAX   2000    /* >10 sec */
 
 void netvsc_dma_unmap(struct hv_device *hv_dev,
               struct hv_netvsc_packet *packet);
 #endif /* _HYPERV_NET_H */

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