1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 *
   4 * Copyright (c) 2011, Microsoft Corporation.
   5 *
   6 * Authors:
   7 *   Haiyang Zhang <haiyangz@microsoft.com>
   8 *   Hank Janssen  <hjanssen@microsoft.com>
   9 *   K. Y. Srinivasan <kys@microsoft.com>
  10 */
  11
  12#ifndef _HYPERV_NET_H
  13#define _HYPERV_NET_H
  14
  15#include <linux/list.h>
  16#include <linux/hyperv.h>
  17#include <linux/rndis.h>
  18#include <linux/jhash.h>
  19#include <net/xdp.h>
  20
  21/* RSS related */
  22#define OID_GEN_RECEIVE_SCALE_CAPABILITIES 0x00010203  /* query only */
  23#define OID_GEN_RECEIVE_SCALE_PARAMETERS 0x00010204  /* query and set */
  24
  25#define NDIS_OBJECT_TYPE_RSS_CAPABILITIES 0x88
  26#define NDIS_OBJECT_TYPE_RSS_PARAMETERS 0x89
  27#define NDIS_OBJECT_TYPE_OFFLOAD	0xa7
  28
  29#define NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2 2
  30#define NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2 2
  31
  32struct ndis_obj_header {
  33	u8 type;
  34	u8 rev;
  35	u16 size;
  36} __packed;
  37
  38/* ndis_recv_scale_cap/cap_flag */
  39#define NDIS_RSS_CAPS_MESSAGE_SIGNALED_INTERRUPTS 0x01000000
  40#define NDIS_RSS_CAPS_CLASSIFICATION_AT_ISR       0x02000000
  41#define NDIS_RSS_CAPS_CLASSIFICATION_AT_DPC       0x04000000
  42#define NDIS_RSS_CAPS_USING_MSI_X                 0x08000000
  43#define NDIS_RSS_CAPS_RSS_AVAILABLE_ON_PORTS      0x10000000
  44#define NDIS_RSS_CAPS_SUPPORTS_MSI_X              0x20000000
  45#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV4          0x00000100
  46#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6          0x00000200
  47#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6_EX       0x00000400
  48
  49struct ndis_recv_scale_cap { /* NDIS_RECEIVE_SCALE_CAPABILITIES */
  50	struct ndis_obj_header hdr;
  51	u32 cap_flag;
  52	u32 num_int_msg;
  53	u32 num_recv_que;
  54	u16 num_indirect_tabent;
  55} __packed;
  56
  57
  58/* ndis_recv_scale_param flags */
  59#define NDIS_RSS_PARAM_FLAG_BASE_CPU_UNCHANGED     0x0001
  60#define NDIS_RSS_PARAM_FLAG_HASH_INFO_UNCHANGED    0x0002
  61#define NDIS_RSS_PARAM_FLAG_ITABLE_UNCHANGED       0x0004
  62#define NDIS_RSS_PARAM_FLAG_HASH_KEY_UNCHANGED     0x0008
  63#define NDIS_RSS_PARAM_FLAG_DISABLE_RSS            0x0010
  64
  65/* Hash info bits */
  66#define NDIS_HASH_FUNC_TOEPLITZ 0x00000001
  67#define NDIS_HASH_IPV4          0x00000100
  68#define NDIS_HASH_TCP_IPV4      0x00000200
  69#define NDIS_HASH_IPV6          0x00000400
  70#define NDIS_HASH_IPV6_EX       0x00000800
  71#define NDIS_HASH_TCP_IPV6      0x00001000
  72#define NDIS_HASH_TCP_IPV6_EX   0x00002000
  73
  74#define NDIS_RSS_INDIRECTION_TABLE_MAX_SIZE_REVISION_2 (128 * 4)
  75#define NDIS_RSS_HASH_SECRET_KEY_MAX_SIZE_REVISION_2   40
  76
  77#define ITAB_NUM 128
  78#define ITAB_NUM_MAX 256
  79
  80struct ndis_recv_scale_param { /* NDIS_RECEIVE_SCALE_PARAMETERS */
  81	struct ndis_obj_header hdr;
  82
  83	/* Qualifies the rest of the information */
  84	u16 flag;
  85
  86	/* The base CPU number to do receive processing. not used */
  87	u16 base_cpu_number;
  88
  89	/* This describes the hash function and type being enabled */
  90	u32 hashinfo;
  91
  92	/* The size of indirection table array */
  93	u16 indirect_tabsize;
  94
  95	/* The offset of the indirection table from the beginning of this
  96	 * structure
  97	 */
  98	u32 indirect_taboffset;
  99
 100	/* The size of the hash secret key */
 101	u16 hashkey_size;
 102
 103	/* The offset of the secret key from the beginning of this structure */
 104	u32 hashkey_offset;
 105
 106	u32 processor_masks_offset;
 107	u32 num_processor_masks;
 108	u32 processor_masks_entry_size;
 109};
 110
 111struct ndis_tcp_ip_checksum_info {
 112	union {
 113		struct {
 114			u32 is_ipv4:1;
 115			u32 is_ipv6:1;
 116			u32 tcp_checksum:1;
 117			u32 udp_checksum:1;
 118			u32 ip_header_checksum:1;
 119			u32 reserved:11;
 120			u32 tcp_header_offset:10;
 121		} transmit;
 122		struct {
 123			u32 tcp_checksum_failed:1;
 124			u32 udp_checksum_failed:1;
 125			u32 ip_checksum_failed:1;
 126			u32 tcp_checksum_succeeded:1;
 127			u32 udp_checksum_succeeded:1;
 128			u32 ip_checksum_succeeded:1;
 129			u32 loopback:1;
 130			u32 tcp_checksum_value_invalid:1;
 131			u32 ip_checksum_value_invalid:1;
 132		} receive;
 133		u32  value;
 134	};
 135};
 136
 137struct ndis_pkt_8021q_info {
 138	union {
 139		struct {
 140			u32 pri:3; /* User Priority */
 141			u32 cfi:1; /* Canonical Format ID */
 142			u32 vlanid:12; /* VLAN ID */
 143			u32 reserved:16;
 144		};
 145		u32 value;
 146	};
 147};
 148
 149/*
 150 * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
 151 * within the RNDIS
 152 *
 153 * The size of this structure is less than 48 bytes and we can now
 154 * place this structure in the skb->cb field.
 155 */
 156struct hv_netvsc_packet {
 157	/* Bookkeeping stuff */
 158	u8 cp_partial; /* partial copy into send buffer */
 159
 160	u8 rmsg_size; /* RNDIS header and PPI size */
 161	u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
 162	u8 page_buf_cnt;
 163
 164	u16 q_idx;
 165	u16 total_packets;
 166
 167	u32 total_bytes;
 168	u32 send_buf_index;
 169	u32 total_data_buflen;
 170	struct hv_dma_range *dma_range;
 171};
 172
 173#define NETVSC_HASH_KEYLEN 40
 174
 175struct netvsc_device_info {
 176	unsigned char mac_adr[ETH_ALEN];
 177	u32  num_chn;
 178	u32  send_sections;
 179	u32  recv_sections;
 180	u32  send_section_size;
 181	u32  recv_section_size;
 182
 183	struct bpf_prog *bprog;
 184
 185	u8 rss_key[NETVSC_HASH_KEYLEN];
 186};
 187
 188enum rndis_device_state {
 189	RNDIS_DEV_UNINITIALIZED = 0,
 190	RNDIS_DEV_INITIALIZING,
 191	RNDIS_DEV_INITIALIZED,
 192	RNDIS_DEV_DATAINITIALIZED,
 193};
 194
 195struct rndis_device {
 196	struct net_device *ndev;
 197
 198	enum rndis_device_state state;
 199
 200	atomic_t new_req_id;
 201
 202	spinlock_t request_lock;
 203	struct list_head req_list;
 204
 205	struct work_struct mcast_work;
 206	u32 filter;
 207
 208	bool link_state;        /* 0 - link up, 1 - link down */
 209
 210	u8 hw_mac_adr[ETH_ALEN];
 211	u8 rss_key[NETVSC_HASH_KEYLEN];
 212};
 213
 214
 215/* Interface */
 216struct rndis_message;
 217struct ndis_offload_params;
 218struct netvsc_device;
 219struct netvsc_channel;
 220struct net_device_context;
 221
 222extern u32 netvsc_ring_bytes;
 223
 224struct netvsc_device *netvsc_device_add(struct hv_device *device,
 225					const struct netvsc_device_info *info);
 226int netvsc_alloc_recv_comp_ring(struct netvsc_device *net_device, u32 q_idx);
 227void netvsc_device_remove(struct hv_device *device);
 228int netvsc_send(struct net_device *net,
 229		struct hv_netvsc_packet *packet,
 230		struct rndis_message *rndis_msg,
 231		struct hv_page_buffer *page_buffer,
 232		struct sk_buff *skb,
 233		bool xdp_tx);
 234void netvsc_linkstatus_callback(struct net_device *net,
 235				struct rndis_message *resp,
 236				void *data, u32 data_buflen);
 237int netvsc_recv_callback(struct net_device *net,
 238			 struct netvsc_device *nvdev,
 239			 struct netvsc_channel *nvchan);
 240void netvsc_channel_cb(void *context);
 241int netvsc_poll(struct napi_struct *napi, int budget);
 242
 243void netvsc_xdp_xmit(struct sk_buff *skb, struct net_device *ndev);
 244u32 netvsc_run_xdp(struct net_device *ndev, struct netvsc_channel *nvchan,
 245		   struct xdp_buff *xdp);
 246unsigned int netvsc_xdp_fraglen(unsigned int len);
 247struct bpf_prog *netvsc_xdp_get(struct netvsc_device *nvdev);
 248int netvsc_xdp_set(struct net_device *dev, struct bpf_prog *prog,
 249		   struct netlink_ext_ack *extack,
 250		   struct netvsc_device *nvdev);
 251int netvsc_vf_setxdp(struct net_device *vf_netdev, struct bpf_prog *prog);
 252int netvsc_bpf(struct net_device *dev, struct netdev_bpf *bpf);
 253int netvsc_ndoxdp_xmit(struct net_device *ndev, int n,
 254		       struct xdp_frame **frames, u32 flags);
 255
 256int rndis_set_subchannel(struct net_device *ndev,
 257			 struct netvsc_device *nvdev,
 258			 struct netvsc_device_info *dev_info);
 259int rndis_filter_open(struct netvsc_device *nvdev);
 260int rndis_filter_close(struct netvsc_device *nvdev);
 261struct netvsc_device *rndis_filter_device_add(struct hv_device *dev,
 262					      struct netvsc_device_info *info);
 263void rndis_filter_update(struct netvsc_device *nvdev);
 264void rndis_filter_device_remove(struct hv_device *dev,
 265				struct netvsc_device *nvdev);
 266int rndis_filter_set_rss_param(struct rndis_device *rdev,
 267			       const u8 *key);
 268int rndis_filter_set_offload_params(struct net_device *ndev,
 269				    struct netvsc_device *nvdev,
 270				    struct ndis_offload_params *req_offloads);
 271int rndis_filter_receive(struct net_device *ndev,
 272			 struct netvsc_device *net_dev,
 273			 struct netvsc_channel *nvchan,
 274			 void *data, u32 buflen);
 275
 276int rndis_filter_set_device_mac(struct netvsc_device *ndev,
 277				const char *mac);
 278
 279int netvsc_switch_datapath(struct net_device *nv_dev, bool vf);
 280
 281#define NVSP_INVALID_PROTOCOL_VERSION	((u32)0xFFFFFFFF)
 282
 283#define NVSP_PROTOCOL_VERSION_1		2
 284#define NVSP_PROTOCOL_VERSION_2		0x30002
 285#define NVSP_PROTOCOL_VERSION_4		0x40000
 286#define NVSP_PROTOCOL_VERSION_5		0x50000
 287#define NVSP_PROTOCOL_VERSION_6		0x60000
 288#define NVSP_PROTOCOL_VERSION_61	0x60001
 289
 290enum {
 291	NVSP_MSG_TYPE_NONE = 0,
 292
 293	/* Init Messages */
 294	NVSP_MSG_TYPE_INIT			= 1,
 295	NVSP_MSG_TYPE_INIT_COMPLETE		= 2,
 296
 297	NVSP_VERSION_MSG_START			= 100,
 298
 299	/* Version 1 Messages */
 300	NVSP_MSG1_TYPE_SEND_NDIS_VER		= NVSP_VERSION_MSG_START,
 301
 302	NVSP_MSG1_TYPE_SEND_RECV_BUF,
 303	NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE,
 304	NVSP_MSG1_TYPE_REVOKE_RECV_BUF,
 305
 306	NVSP_MSG1_TYPE_SEND_SEND_BUF,
 307	NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE,
 308	NVSP_MSG1_TYPE_REVOKE_SEND_BUF,
 309
 310	NVSP_MSG1_TYPE_SEND_RNDIS_PKT,
 311	NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE,
 312
 313	/* Version 2 messages */
 314	NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF,
 315	NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF_COMP,
 316	NVSP_MSG2_TYPE_REVOKE_CHIMNEY_DELEGATED_BUF,
 317
 318	NVSP_MSG2_TYPE_RESUME_CHIMNEY_RX_INDICATION,
 319
 320	NVSP_MSG2_TYPE_TERMINATE_CHIMNEY,
 321	NVSP_MSG2_TYPE_TERMINATE_CHIMNEY_COMP,
 322
 323	NVSP_MSG2_TYPE_INDICATE_CHIMNEY_EVENT,
 324
 325	NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT,
 326	NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT_COMP,
 327
 328	NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ,
 329	NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ_COMP,
 330
 331	NVSP_MSG2_TYPE_ALLOC_RXBUF,
 332	NVSP_MSG2_TYPE_ALLOC_RXBUF_COMP,
 333
 334	NVSP_MSG2_TYPE_FREE_RXBUF,
 335
 336	NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT,
 337	NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT_COMP,
 338
 339	NVSP_MSG2_TYPE_SEND_NDIS_CONFIG,
 340
 341	NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE,
 342	NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
 343
 344	NVSP_MSG2_MAX = NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
 345
 346	/* Version 4 messages */
 347	NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION,
 348	NVSP_MSG4_TYPE_SWITCH_DATA_PATH,
 349	NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
 350
 351	NVSP_MSG4_MAX = NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
 352
 353	/* Version 5 messages */
 354	NVSP_MSG5_TYPE_OID_QUERY_EX,
 355	NVSP_MSG5_TYPE_OID_QUERY_EX_COMP,
 356	NVSP_MSG5_TYPE_SUBCHANNEL,
 357	NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
 358
 359	NVSP_MSG5_MAX = NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
 360
 361	/* Version 6 messages */
 362	NVSP_MSG6_TYPE_PD_API,
 363	NVSP_MSG6_TYPE_PD_POST_BATCH,
 364
 365	NVSP_MSG6_MAX = NVSP_MSG6_TYPE_PD_POST_BATCH
 366};
 367
 368enum {
 369	NVSP_STAT_NONE = 0,
 370	NVSP_STAT_SUCCESS,
 371	NVSP_STAT_FAIL,
 372	NVSP_STAT_PROTOCOL_TOO_NEW,
 373	NVSP_STAT_PROTOCOL_TOO_OLD,
 374	NVSP_STAT_INVALID_RNDIS_PKT,
 375	NVSP_STAT_BUSY,
 376	NVSP_STAT_PROTOCOL_UNSUPPORTED,
 377	NVSP_STAT_MAX,
 378};
 379
 380struct nvsp_message_header {
 381	u32 msg_type;
 382};
 383
 384/* Init Messages */
 385
 386/*
 387 * This message is used by the VSC to initialize the channel after the channels
 388 * has been opened. This message should never include anything other then
 389 * versioning (i.e. this message will be the same for ever).
 390 */
 391struct nvsp_message_init {
 392	u32 min_protocol_ver;
 393	u32 max_protocol_ver;
 394} __packed;
 395
 396/*
 397 * This message is used by the VSP to complete the initialization of the
 398 * channel. This message should never include anything other then versioning
 399 * (i.e. this message will be the same for ever).
 400 */
 401struct nvsp_message_init_complete {
 402	u32 negotiated_protocol_ver;
 403	u32 max_mdl_chain_len;
 404	u32 status;
 405} __packed;
 406
 407union nvsp_message_init_uber {
 408	struct nvsp_message_init init;
 409	struct nvsp_message_init_complete init_complete;
 410} __packed;
 411
 412/* Version 1 Messages */
 413
 414/*
 415 * This message is used by the VSC to send the NDIS version to the VSP. The VSP
 416 * can use this information when handling OIDs sent by the VSC.
 417 */
 418struct nvsp_1_message_send_ndis_version {
 419	u32 ndis_major_ver;
 420	u32 ndis_minor_ver;
 421} __packed;
 422
 423/*
 424 * This message is used by the VSC to send a receive buffer to the VSP. The VSP
 425 * can then use the receive buffer to send data to the VSC.
 426 */
 427struct nvsp_1_message_send_receive_buffer {
 428	u32 gpadl_handle;
 429	u16 id;
 430} __packed;
 431
 432struct nvsp_1_receive_buffer_section {
 433	u32 offset;
 434	u32 sub_alloc_size;
 435	u32 num_sub_allocs;
 436	u32 end_offset;
 437} __packed;
 438
 439/*
 440 * This message is used by the VSP to acknowledge a receive buffer send by the
 441 * VSC. This message must be sent by the VSP before the VSP uses the receive
 442 * buffer.
 443 */
 444struct nvsp_1_message_send_receive_buffer_complete {
 445	u32 status;
 446	u32 num_sections;
 447
 448	/*
 449	 * The receive buffer is split into two parts, a large suballocation
 450	 * section and a small suballocation section. These sections are then
 451	 * suballocated by a certain size.
 452	 */
 453
 454	/*
 455	 * For example, the following break up of the receive buffer has 6
 456	 * large suballocations and 10 small suballocations.
 457	 */
 458
 459	/*
 460	 * |            Large Section          |  |   Small Section   |
 461	 * ------------------------------------------------------------
 462	 * |     |     |     |     |     |     |  | | | | | | | | | | |
 463	 * |                                      |
 464	 *  LargeOffset                            SmallOffset
 465	 */
 466
 467	struct nvsp_1_receive_buffer_section sections[1];
 468} __packed;
 469
 470/*
 471 * This message is sent by the VSC to revoke the receive buffer.  After the VSP
 472 * completes this transaction, the vsp should never use the receive buffer
 473 * again.
 474 */
 475struct nvsp_1_message_revoke_receive_buffer {
 476	u16 id;
 477};
 478
 479/*
 480 * This message is used by the VSC to send a send buffer to the VSP. The VSC
 481 * can then use the send buffer to send data to the VSP.
 482 */
 483struct nvsp_1_message_send_send_buffer {
 484	u32 gpadl_handle;
 485	u16 id;
 486} __packed;
 487
 488/*
 489 * This message is used by the VSP to acknowledge a send buffer sent by the
 490 * VSC. This message must be sent by the VSP before the VSP uses the sent
 491 * buffer.
 492 */
 493struct nvsp_1_message_send_send_buffer_complete {
 494	u32 status;
 495
 496	/*
 497	 * The VSC gets to choose the size of the send buffer and the VSP gets
 498	 * to choose the sections size of the buffer.  This was done to enable
 499	 * dynamic reconfigurations when the cost of GPA-direct buffers
 500	 * decreases.
 501	 */
 502	u32 section_size;
 503} __packed;
 504
 505/*
 506 * This message is sent by the VSC to revoke the send buffer.  After the VSP
 507 * completes this transaction, the vsp should never use the send buffer again.
 508 */
 509struct nvsp_1_message_revoke_send_buffer {
 510	u16 id;
 511};
 512
 513/*
 514 * This message is used by both the VSP and the VSC to send a RNDIS message to
 515 * the opposite channel endpoint.
 516 */
 517struct nvsp_1_message_send_rndis_packet {
 518	/*
 519	 * This field is specified by RNDIS. They assume there's two different
 520	 * channels of communication. However, the Network VSP only has one.
 521	 * Therefore, the channel travels with the RNDIS packet.
 522	 */
 523	u32 channel_type;
 524
 525	/*
 526	 * This field is used to send part or all of the data through a send
 527	 * buffer. This values specifies an index into the send buffer. If the
 528	 * index is 0xFFFFFFFF, then the send buffer is not being used and all
 529	 * of the data was sent through other VMBus mechanisms.
 530	 */
 531	u32 send_buf_section_index;
 532	u32 send_buf_section_size;
 533} __packed;
 534
 535/*
 536 * This message is used by both the VSP and the VSC to complete a RNDIS message
 537 * to the opposite channel endpoint. At this point, the initiator of this
 538 * message cannot use any resources associated with the original RNDIS packet.
 539 */
 540struct nvsp_1_message_send_rndis_packet_complete {
 541	u32 status;
 542};
 543
 544union nvsp_1_message_uber {
 545	struct nvsp_1_message_send_ndis_version send_ndis_ver;
 546
 547	struct nvsp_1_message_send_receive_buffer send_recv_buf;
 548	struct nvsp_1_message_send_receive_buffer_complete
 549						send_recv_buf_complete;
 550	struct nvsp_1_message_revoke_receive_buffer revoke_recv_buf;
 551
 552	struct nvsp_1_message_send_send_buffer send_send_buf;
 553	struct nvsp_1_message_send_send_buffer_complete send_send_buf_complete;
 554	struct nvsp_1_message_revoke_send_buffer revoke_send_buf;
 555
 556	struct nvsp_1_message_send_rndis_packet send_rndis_pkt;
 557	struct nvsp_1_message_send_rndis_packet_complete
 558						send_rndis_pkt_complete;
 559} __packed;
 560
 561
 562/*
 563 * Network VSP protocol version 2 messages:
 564 */
 565struct nvsp_2_vsc_capability {
 566	union {
 567		u64 data;
 568		struct {
 569			u64 vmq:1;
 570			u64 chimney:1;
 571			u64 sriov:1;
 572			u64 ieee8021q:1;
 573			u64 correlation_id:1;
 574			u64 teaming:1;
 575			u64 vsubnetid:1;
 576			u64 rsc:1;
 577		};
 578	};
 579} __packed;
 580
 581struct nvsp_2_send_ndis_config {
 582	u32 mtu;
 583	u32 reserved;
 584	struct nvsp_2_vsc_capability capability;
 585} __packed;
 586
 587/* Allocate receive buffer */
 588struct nvsp_2_alloc_rxbuf {
 589	/* Allocation ID to match the allocation request and response */
 590	u32 alloc_id;
 591
 592	/* Length of the VM shared memory receive buffer that needs to
 593	 * be allocated
 594	 */
 595	u32 len;
 596} __packed;
 597
 598/* Allocate receive buffer complete */
 599struct nvsp_2_alloc_rxbuf_comp {
 600	/* The NDIS_STATUS code for buffer allocation */
 601	u32 status;
 602
 603	u32 alloc_id;
 604
 605	/* GPADL handle for the allocated receive buffer */
 606	u32 gpadl_handle;
 607
 608	/* Receive buffer ID */
 609	u64 recv_buf_id;
 610} __packed;
 611
 612struct nvsp_2_free_rxbuf {
 613	u64 recv_buf_id;
 614} __packed;
 615
 616union nvsp_2_message_uber {
 617	struct nvsp_2_send_ndis_config send_ndis_config;
 618	struct nvsp_2_alloc_rxbuf alloc_rxbuf;
 619	struct nvsp_2_alloc_rxbuf_comp alloc_rxbuf_comp;
 620	struct nvsp_2_free_rxbuf free_rxbuf;
 621} __packed;
 622
 623struct nvsp_4_send_vf_association {
 624	/* 1: allocated, serial number is valid. 0: not allocated */
 625	u32 allocated;
 626
 627	/* Serial number of the VF to team with */
 628	u32 serial;
 629} __packed;
 630
 631enum nvsp_vm_datapath {
 632	NVSP_DATAPATH_SYNTHETIC = 0,
 633	NVSP_DATAPATH_VF,
 634	NVSP_DATAPATH_MAX
 635};
 636
 637struct nvsp_4_sw_datapath {
 638	u32 active_datapath; /* active data path in VM */
 639} __packed;
 640
 641union nvsp_4_message_uber {
 642	struct nvsp_4_send_vf_association vf_assoc;
 643	struct nvsp_4_sw_datapath active_dp;
 644} __packed;
 645
 646enum nvsp_subchannel_operation {
 647	NVSP_SUBCHANNEL_NONE = 0,
 648	NVSP_SUBCHANNEL_ALLOCATE,
 649	NVSP_SUBCHANNEL_MAX
 650};
 651
 652struct nvsp_5_subchannel_request {
 653	u32 op;
 654	u32 num_subchannels;
 655} __packed;
 656
 657struct nvsp_5_subchannel_complete {
 658	u32 status;
 659	u32 num_subchannels; /* Actual number of subchannels allocated */
 660} __packed;
 661
 662struct nvsp_5_send_indirect_table {
 663	/* The number of entries in the send indirection table */
 664	u32 count;
 665
 666	/* The offset of the send indirection table from the beginning of
 667	 * struct nvsp_message.
 668	 * The send indirection table tells which channel to put the send
 669	 * traffic on. Each entry is a channel number.
 670	 */
 671	u32 offset;
 672} __packed;
 673
 674union nvsp_5_message_uber {
 675	struct nvsp_5_subchannel_request subchn_req;
 676	struct nvsp_5_subchannel_complete subchn_comp;
 677	struct nvsp_5_send_indirect_table send_table;
 678} __packed;
 679
 680enum nvsp_6_pd_api_op {
 681	PD_API_OP_CONFIG = 1,
 682	PD_API_OP_SW_DATAPATH, /* Switch Datapath */
 683	PD_API_OP_OPEN_PROVIDER,
 684	PD_API_OP_CLOSE_PROVIDER,
 685	PD_API_OP_CREATE_QUEUE,
 686	PD_API_OP_FLUSH_QUEUE,
 687	PD_API_OP_FREE_QUEUE,
 688	PD_API_OP_ALLOC_COM_BUF, /* Allocate Common Buffer */
 689	PD_API_OP_FREE_COM_BUF, /* Free Common Buffer */
 690	PD_API_OP_MAX
 691};
 692
 693struct grp_affinity {
 694	u64 mask;
 695	u16 grp;
 696	u16 reserved[3];
 697} __packed;
 698
 699struct nvsp_6_pd_api_req {
 700	u32 op;
 701
 702	union {
 703		/* MMIO information is sent from the VM to VSP */
 704		struct __packed {
 705			u64 mmio_pa; /* MMIO Physical Address */
 706			u32 mmio_len;
 707
 708			/* Number of PD queues a VM can support */
 709			u16 num_subchn;
 710		} config;
 711
 712		/* Switch Datapath */
 713		struct __packed {
 714			/* Host Datapath Is PacketDirect */
 715			u8 host_dpath_is_pd;
 716
 717			/* Guest PacketDirect Is Enabled */
 718			u8 guest_pd_enabled;
 719		} sw_dpath;
 720
 721		/* Open Provider*/
 722		struct __packed {
 723			u32 prov_id; /* Provider id */
 724			u32 flag;
 725		} open_prov;
 726
 727		/* Close Provider */
 728		struct __packed {
 729			u32 prov_id;
 730		} cls_prov;
 731
 732		/* Create Queue*/
 733		struct __packed {
 734			u32 prov_id;
 735			u16 q_id;
 736			u16 q_size;
 737			u8 is_recv_q;
 738			u8 is_rss_q;
 739			u32 recv_data_len;
 740			struct grp_affinity affy;
 741		} cr_q;
 742
 743		/* Delete Queue*/
 744		struct __packed {
 745			u32 prov_id;
 746			u16 q_id;
 747		} del_q;
 748
 749		/* Flush Queue */
 750		struct __packed {
 751			u32 prov_id;
 752			u16 q_id;
 753		} flush_q;
 754
 755		/* Allocate Common Buffer */
 756		struct __packed {
 757			u32 len;
 758			u32 pf_node; /* Preferred Node */
 759			u16 region_id;
 760		} alloc_com_buf;
 761
 762		/* Free Common Buffer */
 763		struct __packed {
 764			u32 len;
 765			u64 pa; /* Physical Address */
 766			u32 pf_node; /* Preferred Node */
 767			u16 region_id;
 768			u8 cache_type;
 769		} free_com_buf;
 770	} __packed;
 771} __packed;
 772
 773struct nvsp_6_pd_api_comp {
 774	u32 op;
 775	u32 status;
 776
 777	union {
 778		struct __packed {
 779			/* actual number of PD queues allocated to the VM */
 780			u16 num_pd_q;
 781
 782			/* Num Receive Rss PD Queues */
 783			u8 num_rss_q;
 784
 785			u8 is_supported; /* Is supported by VSP */
 786			u8 is_enabled; /* Is enabled by VSP */
 787		} config;
 788
 789		/* Open Provider */
 790		struct __packed {
 791			u32 prov_id;
 792		} open_prov;
 793
 794		/* Create Queue */
 795		struct __packed {
 796			u32 prov_id;
 797			u16 q_id;
 798			u16 q_size;
 799			u32 recv_data_len;
 800			struct grp_affinity affy;
 801		} cr_q;
 802
 803		/* Allocate Common Buffer */
 804		struct __packed {
 805			u64 pa; /* Physical Address */
 806			u32 len;
 807			u32 pf_node; /* Preferred Node */
 808			u16 region_id;
 809			u8 cache_type;
 810		} alloc_com_buf;
 811	} __packed;
 812} __packed;
 813
 814struct nvsp_6_pd_buf {
 815	u32 region_offset;
 816	u16 region_id;
 817	u16 is_partial:1;
 818	u16 reserved:15;
 819} __packed;
 820
 821struct nvsp_6_pd_batch_msg {
 822	struct nvsp_message_header hdr;
 823	u16 count;
 824	u16 guest2host:1;
 825	u16 is_recv:1;
 826	u16 reserved:14;
 827	struct nvsp_6_pd_buf pd_buf[0];
 828} __packed;
 829
 830union nvsp_6_message_uber {
 831	struct nvsp_6_pd_api_req pd_req;
 832	struct nvsp_6_pd_api_comp pd_comp;
 833} __packed;
 834
 835union nvsp_all_messages {
 836	union nvsp_message_init_uber init_msg;
 837	union nvsp_1_message_uber v1_msg;
 838	union nvsp_2_message_uber v2_msg;
 839	union nvsp_4_message_uber v4_msg;
 840	union nvsp_5_message_uber v5_msg;
 841	union nvsp_6_message_uber v6_msg;
 842} __packed;
 843
 844/* ALL Messages */
 845struct nvsp_message {
 846	struct nvsp_message_header hdr;
 847	union nvsp_all_messages msg;
 848} __packed;
 849
 850
 851#define NETVSC_MTU 65535
 852#define NETVSC_MTU_MIN ETH_MIN_MTU
 853
 854/* Max buffer sizes allowed by a host */
 855#define NETVSC_RECEIVE_BUFFER_SIZE		(1024 * 1024 * 31) /* 31MB */
 856#define NETVSC_RECEIVE_BUFFER_SIZE_LEGACY	(1024 * 1024 * 15) /* 15MB */
 857#define NETVSC_RECEIVE_BUFFER_DEFAULT		(1024 * 1024 * 16)
 858
 859#define NETVSC_SEND_BUFFER_SIZE			(1024 * 1024 * 15)  /* 15MB */
 860#define NETVSC_SEND_BUFFER_DEFAULT		(1024 * 1024)
 861
 862#define NETVSC_INVALID_INDEX			-1
 863
 864#define NETVSC_SEND_SECTION_SIZE		6144
 865#define NETVSC_RECV_SECTION_SIZE		1728
 866
 867/* Default size of TX buf: 1MB, RX buf: 16MB */
 868#define NETVSC_MIN_TX_SECTIONS	10
 869#define NETVSC_DEFAULT_TX	(NETVSC_SEND_BUFFER_DEFAULT \
 870				 / NETVSC_SEND_SECTION_SIZE)
 871#define NETVSC_MIN_RX_SECTIONS	10
 872#define NETVSC_DEFAULT_RX	(NETVSC_RECEIVE_BUFFER_DEFAULT \
 873				 / NETVSC_RECV_SECTION_SIZE)
 874
 875#define NETVSC_RECEIVE_BUFFER_ID		0xcafe
 876#define NETVSC_SEND_BUFFER_ID			0
 877
 878#define NETVSC_SUPPORTED_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | \
 879				      NETIF_F_TSO | NETIF_F_IPV6_CSUM | \
 880				      NETIF_F_TSO6 | NETIF_F_LRO | \
 881				      NETIF_F_SG | NETIF_F_RXHASH)
 882
 883#define VRSS_SEND_TAB_SIZE 16  /* must be power of 2 */
 884#define VRSS_CHANNEL_MAX 64
 885#define VRSS_CHANNEL_DEFAULT 8
 886
 887#define RNDIS_MAX_PKT_DEFAULT 8
 888#define RNDIS_PKT_ALIGN_DEFAULT 8
 889
 890#define NETVSC_XDP_HDRM 256
 891
 892#define NETVSC_MIN_OUT_MSG_SIZE (sizeof(struct vmpacket_descriptor) + \
 893				 sizeof(struct nvsp_message))
 894#define NETVSC_MIN_IN_MSG_SIZE sizeof(struct vmpacket_descriptor)
 895
 896/* Estimated requestor size:
 897 * out_ring_size/min_out_msg_size + in_ring_size/min_in_msg_size
 898 */
 899static inline u32 netvsc_rqstor_size(unsigned long ringbytes)
 900{
 901	return ringbytes / NETVSC_MIN_OUT_MSG_SIZE +
 902		ringbytes / NETVSC_MIN_IN_MSG_SIZE;
 903}
 904
 905/* XFER PAGE packets can specify a maximum of 375 ranges for NDIS >= 6.0
 906 * and a maximum of 64 ranges for NDIS < 6.0 with no RSC; with RSC, this
 907 * limit is raised to 562 (= NVSP_RSC_MAX).
 908 */
 909#define NETVSC_MAX_XFER_PAGE_RANGES NVSP_RSC_MAX
 910#define NETVSC_XFER_HEADER_SIZE(rng_cnt) \
 911		(offsetof(struct vmtransfer_page_packet_header, ranges) + \
 912		(rng_cnt) * sizeof(struct vmtransfer_page_range))
 913#define NETVSC_MAX_PKT_SIZE (NETVSC_XFER_HEADER_SIZE(NETVSC_MAX_XFER_PAGE_RANGES) + \
 914		sizeof(struct nvsp_message) + (sizeof(u32) * VRSS_SEND_TAB_SIZE))
 915
 916struct multi_send_data {
 917	struct sk_buff *skb; /* skb containing the pkt */
 918	struct hv_netvsc_packet *pkt; /* netvsc pkt pending */
 919	u32 count; /* counter of batched packets */
 920};
 921
 922struct recv_comp_data {
 923	u64 tid; /* transaction id */
 924	u32 status;
 925};
 926
 927struct multi_recv_comp {
 928	struct recv_comp_data *slots;
 929	u32 first;	/* first data entry */
 930	u32 next;	/* next entry for writing */
 931};
 932
 933#define NVSP_RSC_MAX 562 /* Max #RSC frags in a vmbus xfer page pkt */
 934
 935struct nvsc_rsc {
 936	struct ndis_pkt_8021q_info vlan;
 937	struct ndis_tcp_ip_checksum_info csum_info;
 938	u32 hash_info;
 939	u8 ppi_flags; /* valid/present bits for the above PPIs */
 940	u8 is_last; /* last RNDIS msg in a vmtransfer_page */
 941	u32 cnt; /* #fragments in an RSC packet */
 942	u32 pktlen; /* Full packet length */
 943	void *data[NVSP_RSC_MAX];
 944	u32 len[NVSP_RSC_MAX];
 945};
 946
 947#define NVSC_RSC_VLAN		BIT(0)	/* valid/present bit for 'vlan' */
 948#define NVSC_RSC_CSUM_INFO	BIT(1)	/* valid/present bit for 'csum_info' */
 949#define NVSC_RSC_HASH_INFO	BIT(2)	/* valid/present bit for 'hash_info' */
 950
 951struct netvsc_stats_tx {
 952	u64 packets;
 953	u64 bytes;
 954	u64 xdp_xmit;
 955	struct u64_stats_sync syncp;
 956};
 957
 958struct netvsc_stats_rx {
 959	u64 packets;
 960	u64 bytes;
 961	u64 broadcast;
 962	u64 multicast;
 963	u64 xdp_drop;
 964	u64 xdp_redirect;
 965	u64 xdp_tx;
 966	struct u64_stats_sync syncp;
 967};
 968
 969struct netvsc_ethtool_stats {
 970	unsigned long tx_scattered;
 971	unsigned long tx_no_memory;
 972	unsigned long tx_no_space;
 973	unsigned long tx_too_big;
 974	unsigned long tx_busy;
 975	unsigned long tx_send_full;
 976	unsigned long rx_comp_busy;
 977	unsigned long rx_no_memory;
 978	unsigned long stop_queue;
 979	unsigned long wake_queue;
 980	unsigned long vlan_error;
 981};
 982
 983struct netvsc_ethtool_pcpu_stats {
 984	u64     rx_packets;
 985	u64     rx_bytes;
 986	u64     tx_packets;
 987	u64     tx_bytes;
 988	u64     vf_rx_packets;
 989	u64     vf_rx_bytes;
 990	u64     vf_tx_packets;
 991	u64     vf_tx_bytes;
 992};
 993
 994struct netvsc_vf_pcpu_stats {
 995	u64     rx_packets;
 996	u64     rx_bytes;
 997	u64     tx_packets;
 998	u64     tx_bytes;
 999	struct u64_stats_sync   syncp;
1000	u32	tx_dropped;
1001};
1002
1003struct netvsc_reconfig {
1004	struct list_head list;
1005	u32 event;
1006};
1007
1008/* L4 hash bits for different protocols */
1009#define HV_TCP4_L4HASH 1
1010#define HV_TCP6_L4HASH 2
1011#define HV_UDP4_L4HASH 4
1012#define HV_UDP6_L4HASH 8
1013#define HV_DEFAULT_L4HASH (HV_TCP4_L4HASH | HV_TCP6_L4HASH | HV_UDP4_L4HASH | \
1014			   HV_UDP6_L4HASH)
1015
1016/* The context of the netvsc device  */
1017struct net_device_context {
1018	/* point back to our device context */
1019	struct hv_device *device_ctx;
1020	/* netvsc_device */
1021	struct netvsc_device __rcu *nvdev;
1022	/* list of netvsc net_devices */
1023	struct list_head list;
1024	/* reconfigure work */
1025	struct delayed_work dwork;
1026	/* last reconfig time */
1027	unsigned long last_reconfig;
1028	/* reconfig events */
1029	struct list_head reconfig_events;
1030	/* list protection */
1031	spinlock_t lock;
1032
1033	u32 msg_enable; /* debug level */
1034
1035	u32 tx_checksum_mask;
1036
1037	u32 tx_table[VRSS_SEND_TAB_SIZE];
1038
1039	u16 *rx_table;
1040
1041	u32 rx_table_sz;
1042
1043	/* Ethtool settings */
1044	u8 duplex;
1045	u32 speed;
1046	u32 l4_hash; /* L4 hash settings */
1047	struct netvsc_ethtool_stats eth_stats;
1048
1049	/* State to manage the associated VF interface. */
1050	struct net_device __rcu *vf_netdev;
1051	struct netvsc_vf_pcpu_stats __percpu *vf_stats;
1052	struct delayed_work vf_takeover;
1053
1054	/* 1: allocated, serial number is valid. 0: not allocated */
1055	u32 vf_alloc;
1056	/* Serial number of the VF to team with */
1057	u32 vf_serial;
1058	/* completion variable to confirm vf association */
1059	struct completion vf_add;
1060	/* Is the current data path through the VF NIC? */
1061	bool  data_path_is_vf;
1062
1063	/* Used to temporarily save the config info across hibernation */
1064	struct netvsc_device_info *saved_netvsc_dev_info;
1065};
1066
1067/* Azure hosts don't support non-TCP port numbers in hashing for fragmented
1068 * packets. We can use ethtool to change UDP hash level when necessary.
1069 */
1070static inline u32 netvsc_get_hash(struct sk_buff *skb,
1071				  const struct net_device_context *ndc)
1072{
1073	struct flow_keys flow;
1074	u32 hash, pkt_proto = 0;
1075	static u32 hashrnd __read_mostly;
1076
1077	net_get_random_once(&hashrnd, sizeof(hashrnd));
1078
1079	if (!skb_flow_dissect_flow_keys(skb, &flow, 0))
1080		return 0;
1081
1082	switch (flow.basic.ip_proto) {
1083	case IPPROTO_TCP:
1084		if (flow.basic.n_proto == htons(ETH_P_IP))
1085			pkt_proto = HV_TCP4_L4HASH;
1086		else if (flow.basic.n_proto == htons(ETH_P_IPV6))
1087			pkt_proto = HV_TCP6_L4HASH;
1088
1089		break;
1090
1091	case IPPROTO_UDP:
1092		if (flow.basic.n_proto == htons(ETH_P_IP))
1093			pkt_proto = HV_UDP4_L4HASH;
1094		else if (flow.basic.n_proto == htons(ETH_P_IPV6))
1095			pkt_proto = HV_UDP6_L4HASH;
1096
1097		break;
1098	}
1099
1100	if (pkt_proto & ndc->l4_hash) {
1101		return skb_get_hash(skb);
1102	} else {
1103		if (flow.basic.n_proto == htons(ETH_P_IP))
1104			hash = jhash2((u32 *)&flow.addrs.v4addrs, 2, hashrnd);
1105		else if (flow.basic.n_proto == htons(ETH_P_IPV6))
1106			hash = jhash2((u32 *)&flow.addrs.v6addrs, 8, hashrnd);
1107		else
1108			return 0;
1109
1110		__skb_set_sw_hash(skb, hash, false);
1111	}
1112
1113	return hash;
1114}
1115
1116/* Per channel data */
1117struct netvsc_channel {
1118	struct vmbus_channel *channel;
1119	struct netvsc_device *net_device;
1120	void *recv_buf; /* buffer to copy packets out from the receive buffer */
1121	const struct vmpacket_descriptor *desc;
1122	struct napi_struct napi;
1123	struct multi_send_data msd;
1124	struct multi_recv_comp mrc;
1125	atomic_t queue_sends;
1126	struct nvsc_rsc rsc;
1127
1128	struct bpf_prog __rcu *bpf_prog;
1129	struct xdp_rxq_info xdp_rxq;
1130	bool xdp_flush;
1131
1132	struct netvsc_stats_tx tx_stats;
1133	struct netvsc_stats_rx rx_stats;
1134};
1135
1136/* Per netvsc device */
1137struct netvsc_device {
1138	u32 nvsp_version;
1139
1140	wait_queue_head_t wait_drain;
1141	bool destroy;
1142	bool tx_disable; /* if true, do not wake up queue again */
1143
1144	/* Receive buffer allocated by us but manages by NetVSP */
1145	void *recv_buf;
1146	u32 recv_buf_size; /* allocated bytes */
1147	struct vmbus_gpadl recv_buf_gpadl_handle;
1148	u32 recv_section_cnt;
1149	u32 recv_section_size;
1150	u32 recv_completion_cnt;
1151
1152	/* Send buffer allocated by us */
1153	void *send_buf;
1154	u32 send_buf_size;
1155	struct vmbus_gpadl send_buf_gpadl_handle;
1156	u32 send_section_cnt;
1157	u32 send_section_size;
1158	unsigned long *send_section_map;
1159
1160	/* Used for NetVSP initialization protocol */
1161	struct completion channel_init_wait;
1162	struct nvsp_message channel_init_pkt;
1163
1164	struct nvsp_message revoke_packet;
1165
1166	u32 max_chn;
1167	u32 num_chn;
1168
1169	atomic_t open_chn;
1170	struct work_struct subchan_work;
1171	wait_queue_head_t subchan_open;
1172
1173	struct rndis_device *extension;
1174
1175	u32 max_pkt; /* max number of pkt in one send, e.g. 8 */
1176	u32 pkt_align; /* alignment bytes, e.g. 8 */
1177
1178	struct netvsc_channel chan_table[VRSS_CHANNEL_MAX];
1179
1180	struct rcu_head rcu;
1181};
1182
1183/* NdisInitialize message */
1184struct rndis_initialize_request {
1185	u32 req_id;
1186	u32 major_ver;
1187	u32 minor_ver;
1188	u32 max_xfer_size;
1189};
1190
1191/* Response to NdisInitialize */
1192struct rndis_initialize_complete {
1193	u32 req_id;
1194	u32 status;
1195	u32 major_ver;
1196	u32 minor_ver;
1197	u32 dev_flags;
1198	u32 medium;
1199	u32 max_pkt_per_msg;
1200	u32 max_xfer_size;
1201	u32 pkt_alignment_factor;
1202	u32 af_list_offset;
1203	u32 af_list_size;
1204};
1205
1206/* Call manager devices only: Information about an address family */
1207/* supported by the device is appended to the response to NdisInitialize. */
1208struct rndis_co_address_family {
1209	u32 address_family;
1210	u32 major_ver;
1211	u32 minor_ver;
1212};
1213
1214/* NdisHalt message */
1215struct rndis_halt_request {
1216	u32 req_id;
1217};
1218
1219/* NdisQueryRequest message */
1220struct rndis_query_request {
1221	u32 req_id;
1222	u32 oid;
1223	u32 info_buflen;
1224	u32 info_buf_offset;
1225	u32 dev_vc_handle;
1226};
1227
1228/* Response to NdisQueryRequest */
1229struct rndis_query_complete {
1230	u32 req_id;
1231	u32 status;
1232	u32 info_buflen;
1233	u32 info_buf_offset;
1234};
1235
1236/* NdisSetRequest message */
1237struct rndis_set_request {
1238	u32 req_id;
1239	u32 oid;
1240	u32 info_buflen;
1241	u32 info_buf_offset;
1242	u32 dev_vc_handle;
1243	u8  info_buf[];
1244};
1245
1246/* Response to NdisSetRequest */
1247struct rndis_set_complete {
1248	u32 req_id;
1249	u32 status;
1250};
1251
1252/* NdisReset message */
1253struct rndis_reset_request {
1254	u32 reserved;
1255};
1256
1257/* Response to NdisReset */
1258struct rndis_reset_complete {
1259	u32 status;
1260	u32 addressing_reset;
1261};
1262
1263/* NdisMIndicateStatus message */
1264struct rndis_indicate_status {
1265	u32 status;
1266	u32 status_buflen;
1267	u32 status_buf_offset;
1268};
1269
1270/* Diagnostic information passed as the status buffer in */
1271/* struct rndis_indicate_status messages signifying error conditions. */
1272struct rndis_diagnostic_info {
1273	u32 diag_status;
1274	u32 error_offset;
1275};
1276
1277/* NdisKeepAlive message */
1278struct rndis_keepalive_request {
1279	u32 req_id;
1280};
1281
1282/* Response to NdisKeepAlive */
1283struct rndis_keepalive_complete {
1284	u32 req_id;
1285	u32 status;
1286};
1287
1288/*
1289 * Data message. All Offset fields contain byte offsets from the beginning of
1290 * struct rndis_packet. All Length fields are in bytes.  VcHandle is set
1291 * to 0 for connectionless data, otherwise it contains the VC handle.
1292 */
1293struct rndis_packet {
1294	u32 data_offset;
1295	u32 data_len;
1296	u32 oob_data_offset;
1297	u32 oob_data_len;
1298	u32 num_oob_data_elements;
1299	u32 per_pkt_info_offset;
1300	u32 per_pkt_info_len;
1301	u32 vc_handle;
1302	u32 reserved;
1303};
1304
1305/* Optional Out of Band data associated with a Data message. */
1306struct rndis_oobd {
1307	u32 size;
1308	u32 type;
1309	u32 class_info_offset;
1310};
1311
1312/* Packet extension field contents associated with a Data message. */
1313struct rndis_per_packet_info {
1314	u32 size;
1315	u32 type:31;
1316	u32 internal:1;
1317	u32 ppi_offset;
1318};
1319
1320enum ndis_per_pkt_info_type {
1321	TCPIP_CHKSUM_PKTINFO,
1322	IPSEC_PKTINFO,
1323	TCP_LARGESEND_PKTINFO,
1324	CLASSIFICATION_HANDLE_PKTINFO,
1325	NDIS_RESERVED,
1326	SG_LIST_PKTINFO,
1327	IEEE_8021Q_INFO,
1328	ORIGINAL_PKTINFO,
1329	PACKET_CANCEL_ID,
1330	NBL_HASH_VALUE = PACKET_CANCEL_ID,
1331	ORIGINAL_NET_BUFLIST,
1332	CACHED_NET_BUFLIST,
1333	SHORT_PKT_PADINFO,
1334	MAX_PER_PKT_INFO
1335};
1336
1337enum rndis_per_pkt_info_interal_type {
1338	RNDIS_PKTINFO_ID = 1,
1339	/* Add more members here */
1340
1341	RNDIS_PKTINFO_MAX
1342};
1343
1344#define RNDIS_PKTINFO_SUBALLOC BIT(0)
1345#define RNDIS_PKTINFO_1ST_FRAG BIT(1)
1346#define RNDIS_PKTINFO_LAST_FRAG BIT(2)
1347
1348#define RNDIS_PKTINFO_ID_V1 1
1349
1350struct rndis_pktinfo_id {
1351	u8 ver;
1352	u8 flag;
1353	u16 pkt_id;
1354};
1355
1356struct ndis_object_header {
1357	u8 type;
1358	u8 revision;
1359	u16 size;
1360};
1361
1362#define NDIS_OBJECT_TYPE_DEFAULT	0x80
1363#define NDIS_OFFLOAD_PARAMETERS_REVISION_3 3
1364#define NDIS_OFFLOAD_PARAMETERS_REVISION_2 2
1365#define NDIS_OFFLOAD_PARAMETERS_REVISION_1 1
1366
1367#define NDIS_OFFLOAD_PARAMETERS_NO_CHANGE 0
1368#define NDIS_OFFLOAD_PARAMETERS_LSOV2_DISABLED 1
1369#define NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED  2
1370#define NDIS_OFFLOAD_PARAMETERS_LSOV1_ENABLED  2
1371#define NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED 1
1372#define NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED 2
1373#define NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED 1
1374#define NDIS_OFFLOAD_PARAMETERS_TX_ENABLED_RX_DISABLED 2
1375#define NDIS_OFFLOAD_PARAMETERS_RX_ENABLED_TX_DISABLED 3
1376#define NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED 4
1377
1378#define NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE	1
1379#define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV4	0
1380#define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV6	1
1381
1382#define VERSION_4_OFFLOAD_SIZE			22
1383/*
1384 * New offload OIDs for NDIS 6
1385 */
1386#define OID_TCP_OFFLOAD_CURRENT_CONFIG 0xFC01020B /* query only */
1387#define OID_TCP_OFFLOAD_PARAMETERS 0xFC01020C		/* set only */
1388#define OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020D/* query only */
1389#define OID_TCP_CONNECTION_OFFLOAD_CURRENT_CONFIG 0xFC01020E /* query only */
1390#define OID_TCP_CONNECTION_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020F /* query */
1391#define OID_OFFLOAD_ENCAPSULATION 0x0101010A /* set/query */
1392
1393/*
1394 * OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES
1395 * ndis_type: NDIS_OBJTYPE_OFFLOAD
1396 */
1397
1398#define	NDIS_OFFLOAD_ENCAP_NONE		0x0000
1399#define	NDIS_OFFLOAD_ENCAP_NULL		0x0001
1400#define	NDIS_OFFLOAD_ENCAP_8023		0x0002
1401#define	NDIS_OFFLOAD_ENCAP_8023PQ	0x0004
1402#define	NDIS_OFFLOAD_ENCAP_8023PQ_OOB	0x0008
1403#define	NDIS_OFFLOAD_ENCAP_RFC1483	0x0010
1404
1405struct ndis_csum_offload {
1406	u32	ip4_txenc;
1407	u32	ip4_txcsum;
1408#define	NDIS_TXCSUM_CAP_IP4OPT		0x001
1409#define	NDIS_TXCSUM_CAP_TCP4OPT		0x004
1410#define	NDIS_TXCSUM_CAP_TCP4		0x010
1411#define	NDIS_TXCSUM_CAP_UDP4		0x040
1412#define	NDIS_TXCSUM_CAP_IP4		0x100
1413
1414#define NDIS_TXCSUM_ALL_TCP4	(NDIS_TXCSUM_CAP_TCP4 | NDIS_TXCSUM_CAP_TCP4OPT)
1415
1416	u32	ip4_rxenc;
1417	u32	ip4_rxcsum;
1418#define	NDIS_RXCSUM_CAP_IP4OPT		0x001
1419#define	NDIS_RXCSUM_CAP_TCP4OPT		0x004
1420#define	NDIS_RXCSUM_CAP_TCP4		0x010
1421#define	NDIS_RXCSUM_CAP_UDP4		0x040
1422#define	NDIS_RXCSUM_CAP_IP4		0x100
1423	u32	ip6_txenc;
1424	u32	ip6_txcsum;
1425#define	NDIS_TXCSUM_CAP_IP6EXT		0x001
1426#define	NDIS_TXCSUM_CAP_TCP6OPT		0x004
1427#define	NDIS_TXCSUM_CAP_TCP6		0x010
1428#define	NDIS_TXCSUM_CAP_UDP6		0x040
1429	u32	ip6_rxenc;
1430	u32	ip6_rxcsum;
1431#define	NDIS_RXCSUM_CAP_IP6EXT		0x001
1432#define	NDIS_RXCSUM_CAP_TCP6OPT		0x004
1433#define	NDIS_RXCSUM_CAP_TCP6		0x010
1434#define	NDIS_RXCSUM_CAP_UDP6		0x040
1435
1436#define NDIS_TXCSUM_ALL_TCP6	(NDIS_TXCSUM_CAP_TCP6 |		\
1437				 NDIS_TXCSUM_CAP_TCP6OPT |	\
1438				 NDIS_TXCSUM_CAP_IP6EXT)
1439};
1440
1441struct ndis_lsov1_offload {
1442	u32	encap;
1443	u32	maxsize;
1444	u32	minsegs;
1445	u32	opts;
1446};
1447
1448struct ndis_ipsecv1_offload {
1449	u32	encap;
1450	u32	ah_esp;
1451	u32	xport_tun;
1452	u32	ip4_opts;
1453	u32	flags;
1454	u32	ip4_ah;
1455	u32	ip4_esp;
1456};
1457
1458struct ndis_lsov2_offload {
1459	u32	ip4_encap;
1460	u32	ip4_maxsz;
1461	u32	ip4_minsg;
1462	u32	ip6_encap;
1463	u32	ip6_maxsz;
1464	u32	ip6_minsg;
1465	u32	ip6_opts;
1466#define	NDIS_LSOV2_CAP_IP6EXT		0x001
1467#define	NDIS_LSOV2_CAP_TCP6OPT		0x004
1468
1469#define NDIS_LSOV2_CAP_IP6		(NDIS_LSOV2_CAP_IP6EXT | \
1470					 NDIS_LSOV2_CAP_TCP6OPT)
1471};
1472
1473struct ndis_ipsecv2_offload {
1474	u32	encap;
1475	u8	ip6;
1476	u8	ip4opt;
1477	u8	ip6ext;
1478	u8	ah;
1479	u8	esp;
1480	u8	ah_esp;
1481	u8	xport;
1482	u8	tun;
1483	u8	xport_tun;
1484	u8	lso;
1485	u8	extseq;
1486	u32	udp_esp;
1487	u32	auth;
1488	u32	crypto;
1489	u32	sa_caps;
1490};
1491
1492struct ndis_rsc_offload {
1493	u8	ip4;
1494	u8	ip6;
1495};
1496
1497struct ndis_encap_offload {
1498	u32	flags;
1499	u32	maxhdr;
1500};
1501
1502struct ndis_offload {
1503	struct ndis_object_header	header;
1504	struct ndis_csum_offload	csum;
1505	struct ndis_lsov1_offload	lsov1;
1506	struct ndis_ipsecv1_offload	ipsecv1;
1507	struct ndis_lsov2_offload	lsov2;
1508	u32				flags;
1509	/* NDIS >= 6.1 */
1510	struct ndis_ipsecv2_offload	ipsecv2;
1511	/* NDIS >= 6.30 */
1512	struct ndis_rsc_offload		rsc;
1513	struct ndis_encap_offload	encap_gre;
1514};
1515
1516#define	NDIS_OFFLOAD_SIZE		sizeof(struct ndis_offload)
1517#define	NDIS_OFFLOAD_SIZE_6_0		offsetof(struct ndis_offload, ipsecv2)
1518#define	NDIS_OFFLOAD_SIZE_6_1		offsetof(struct ndis_offload, rsc)
1519
1520struct ndis_offload_params {
1521	struct ndis_object_header header;
1522	u8 ip_v4_csum;
1523	u8 tcp_ip_v4_csum;
1524	u8 udp_ip_v4_csum;
1525	u8 tcp_ip_v6_csum;
1526	u8 udp_ip_v6_csum;
1527	u8 lso_v1;
1528	u8 ip_sec_v1;
1529	u8 lso_v2_ipv4;
1530	u8 lso_v2_ipv6;
1531	u8 tcp_connection_ip_v4;
1532	u8 tcp_connection_ip_v6;
1533	u32 flags;
1534	u8 ip_sec_v2;
1535	u8 ip_sec_v2_ip_v4;
1536	struct {
1537		u8 rsc_ip_v4;
1538		u8 rsc_ip_v6;
1539	};
1540	struct {
1541		u8 encapsulated_packet_task_offload;
1542		u8 encapsulation_types;
1543	};
1544};
1545
1546struct ndis_tcp_lso_info {
1547	union {
1548		struct {
1549			u32 unused:30;
1550			u32 type:1;
1551			u32 reserved2:1;
1552		} transmit;
1553		struct {
1554			u32 mss:20;
1555			u32 tcp_header_offset:10;
1556			u32 type:1;
1557			u32 reserved2:1;
1558		} lso_v1_transmit;
1559		struct {
1560			u32 tcp_payload:30;
1561			u32 type:1;
1562			u32 reserved2:1;
1563		} lso_v1_transmit_complete;
1564		struct {
1565			u32 mss:20;
1566			u32 tcp_header_offset:10;
1567			u32 type:1;
1568			u32 ip_version:1;
1569		} lso_v2_transmit;
1570		struct {
1571			u32 reserved:30;
1572			u32 type:1;
1573			u32 reserved2:1;
1574		} lso_v2_transmit_complete;
1575		u32  value;
1576	};
1577};
1578
1579#define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1580		sizeof(struct ndis_pkt_8021q_info))
1581
1582#define NDIS_CSUM_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1583		sizeof(struct ndis_tcp_ip_checksum_info))
1584
1585#define NDIS_LSO_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1586		sizeof(struct ndis_tcp_lso_info))
1587
1588#define NDIS_HASH_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1589		sizeof(u32))
1590
1591/* Total size of all PPI data */
1592#define NDIS_ALL_PPI_SIZE (NDIS_VLAN_PPI_SIZE + NDIS_CSUM_PPI_SIZE + \
1593			   NDIS_LSO_PPI_SIZE + NDIS_HASH_PPI_SIZE)
1594
1595/* Format of Information buffer passed in a SetRequest for the OID */
1596/* OID_GEN_RNDIS_CONFIG_PARAMETER. */
1597struct rndis_config_parameter_info {
1598	u32 parameter_name_offset;
1599	u32 parameter_name_length;
1600	u32 parameter_type;
1601	u32 parameter_value_offset;
1602	u32 parameter_value_length;
1603};
1604
1605/* Values for ParameterType in struct rndis_config_parameter_info */
1606#define RNDIS_CONFIG_PARAM_TYPE_INTEGER     0
1607#define RNDIS_CONFIG_PARAM_TYPE_STRING      2
1608
1609/* CONDIS Miniport messages for connection oriented devices */
1610/* that do not implement a call manager. */
1611
1612/* CoNdisMiniportCreateVc message */
1613struct rcondis_mp_create_vc {
1614	u32 req_id;
1615	u32 ndis_vc_handle;
1616};
1617
1618/* Response to CoNdisMiniportCreateVc */
1619struct rcondis_mp_create_vc_complete {
1620	u32 req_id;
1621	u32 dev_vc_handle;
1622	u32 status;
1623};
1624
1625/* CoNdisMiniportDeleteVc message */
1626struct rcondis_mp_delete_vc {
1627	u32 req_id;
1628	u32 dev_vc_handle;
1629};
1630
1631/* Response to CoNdisMiniportDeleteVc */
1632struct rcondis_mp_delete_vc_complete {
1633	u32 req_id;
1634	u32 status;
1635};
1636
1637/* CoNdisMiniportQueryRequest message */
1638struct rcondis_mp_query_request {
1639	u32 req_id;
1640	u32 request_type;
1641	u32 oid;
1642	u32 dev_vc_handle;
1643	u32 info_buflen;
1644	u32 info_buf_offset;
1645};
1646
1647/* CoNdisMiniportSetRequest message */
1648struct rcondis_mp_set_request {
1649	u32 req_id;
1650	u32 request_type;
1651	u32 oid;
1652	u32 dev_vc_handle;
1653	u32 info_buflen;
1654	u32 info_buf_offset;
1655};
1656
1657/* CoNdisIndicateStatus message */
1658struct rcondis_indicate_status {
1659	u32 ndis_vc_handle;
1660	u32 status;
1661	u32 status_buflen;
1662	u32 status_buf_offset;
1663};
1664
1665/* CONDIS Call/VC parameters */
1666struct rcondis_specific_parameters {
1667	u32 parameter_type;
1668	u32 parameter_length;
1669	u32 parameter_lffset;
1670};
1671
1672struct rcondis_media_parameters {
1673	u32 flags;
1674	u32 reserved1;
1675	u32 reserved2;
1676	struct rcondis_specific_parameters media_specific;
1677};
1678
1679struct rndis_flowspec {
1680	u32 token_rate;
1681	u32 token_bucket_size;
1682	u32 peak_bandwidth;
1683	u32 latency;
1684	u32 delay_variation;
1685	u32 service_type;
1686	u32 max_sdu_size;
1687	u32 minimum_policed_size;
1688};
1689
1690struct rcondis_call_manager_parameters {
1691	struct rndis_flowspec transmit;
1692	struct rndis_flowspec receive;
1693	struct rcondis_specific_parameters call_mgr_specific;
1694};
1695
1696/* CoNdisMiniportActivateVc message */
1697struct rcondis_mp_activate_vc_request {
1698	u32 req_id;
1699	u32 flags;
1700	u32 dev_vc_handle;
1701	u32 media_params_offset;
1702	u32 media_params_length;
1703	u32 call_mgr_params_offset;
1704	u32 call_mgr_params_length;
1705};
1706
1707/* Response to CoNdisMiniportActivateVc */
1708struct rcondis_mp_activate_vc_complete {
1709	u32 req_id;
1710	u32 status;
1711};
1712
1713/* CoNdisMiniportDeactivateVc message */
1714struct rcondis_mp_deactivate_vc_request {
1715	u32 req_id;
1716	u32 flags;
1717	u32 dev_vc_handle;
1718};
1719
1720/* Response to CoNdisMiniportDeactivateVc */
1721struct rcondis_mp_deactivate_vc_complete {
1722	u32 req_id;
1723	u32 status;
1724};
1725
1726
1727/* union with all of the RNDIS messages */
1728union rndis_message_container {
1729	struct rndis_packet pkt;
1730	struct rndis_initialize_request init_req;
1731	struct rndis_halt_request halt_req;
1732	struct rndis_query_request query_req;
1733	struct rndis_set_request set_req;
1734	struct rndis_reset_request reset_req;
1735	struct rndis_keepalive_request keep_alive_req;
1736	struct rndis_indicate_status indicate_status;
1737	struct rndis_initialize_complete init_complete;
1738	struct rndis_query_complete query_complete;
1739	struct rndis_set_complete set_complete;
1740	struct rndis_reset_complete reset_complete;
1741	struct rndis_keepalive_complete keep_alive_complete;
1742	struct rcondis_mp_create_vc co_miniport_create_vc;
1743	struct rcondis_mp_delete_vc co_miniport_delete_vc;
1744	struct rcondis_indicate_status co_indicate_status;
1745	struct rcondis_mp_activate_vc_request co_miniport_activate_vc;
1746	struct rcondis_mp_deactivate_vc_request co_miniport_deactivate_vc;
1747	struct rcondis_mp_create_vc_complete co_miniport_create_vc_complete;
1748	struct rcondis_mp_delete_vc_complete co_miniport_delete_vc_complete;
1749	struct rcondis_mp_activate_vc_complete co_miniport_activate_vc_complete;
1750	struct rcondis_mp_deactivate_vc_complete
1751		co_miniport_deactivate_vc_complete;
1752};
1753
1754/* Remote NDIS message format */
1755struct rndis_message {
1756	u32 ndis_msg_type;
1757
1758	/* Total length of this message, from the beginning */
1759	/* of the struct rndis_message, in bytes. */
1760	u32 msg_len;
1761
1762	/* Actual message */
1763	union rndis_message_container msg;
1764};
1765
1766
1767/* Handy macros */
1768
1769/* get the size of an RNDIS message. Pass in the message type, */
1770/* struct rndis_set_request, struct rndis_packet for example */
1771#define RNDIS_MESSAGE_SIZE(msg)				\
1772	(sizeof(msg) + (sizeof(struct rndis_message) -	\
1773	 sizeof(union rndis_message_container)))
1774
1775#define RNDIS_HEADER_SIZE	(sizeof(struct rndis_message) - \
1776				 sizeof(union rndis_message_container))
1777
1778#define RNDIS_AND_PPI_SIZE (sizeof(struct rndis_message) + NDIS_ALL_PPI_SIZE)
1779
1780#define NDIS_PACKET_TYPE_DIRECTED	0x00000001
1781#define NDIS_PACKET_TYPE_MULTICAST	0x00000002
1782#define NDIS_PACKET_TYPE_ALL_MULTICAST	0x00000004
1783#define NDIS_PACKET_TYPE_BROADCAST	0x00000008
1784#define NDIS_PACKET_TYPE_SOURCE_ROUTING	0x00000010
1785#define NDIS_PACKET_TYPE_PROMISCUOUS	0x00000020
1786#define NDIS_PACKET_TYPE_SMT		0x00000040
1787#define NDIS_PACKET_TYPE_ALL_LOCAL	0x00000080
1788#define NDIS_PACKET_TYPE_GROUP		0x00000100
1789#define NDIS_PACKET_TYPE_ALL_FUNCTIONAL	0x00000200
1790#define NDIS_PACKET_TYPE_FUNCTIONAL	0x00000400
1791#define NDIS_PACKET_TYPE_MAC_FRAME	0x00000800
1792
1793#define TRANSPORT_INFO_NOT_IP   0
1794#define TRANSPORT_INFO_IPV4_TCP 0x01
1795#define TRANSPORT_INFO_IPV4_UDP 0x02
1796#define TRANSPORT_INFO_IPV6_TCP 0x10
1797#define TRANSPORT_INFO_IPV6_UDP 0x20
1798
1799#define RETRY_US_LO	5000
1800#define RETRY_US_HI	10000
1801#define RETRY_MAX	2000	/* >10 sec */
1802
1803void netvsc_dma_unmap(struct hv_device *hv_dev,
1804		      struct hv_netvsc_packet *packet);
1805#endif /* _HYPERV_NET_H */