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 32 struct 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 49 struct 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 80 struct 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 }; 110 111 struct 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 }; 136 137 struct 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 */ 156 struct 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 40 174 175 struct 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 }; 187 188 enum rndis_device_state { 189 RNDIS_DEV_UNINITIALIZED = 0, 190 RNDIS_DEV_INITIALIZING, 191 RNDIS_DEV_INITIALIZED, 192 RNDIS_DEV_DATAINITIALIZED, 193 }; 194 195 struct 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 */ 216 struct rndis_message; 217 struct ndis_offload_params; 218 struct netvsc_device; 219 struct netvsc_channel; 220 struct net_device_context; 221 222 extern u32 netvsc_ring_bytes; 223 224 struct netvsc_device *netvsc_device_add(struct hv_device *device, 225 const struct netvsc_device_info *info); 226 int netvsc_alloc_recv_comp_ring(struct netvsc_device *net_device, u32 q_idx); 227 void netvsc_device_remove(struct hv_device *device); 228 int 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); 234 void netvsc_linkstatus_callback(struct net_device *net, 235 struct rndis_message *resp, 236 void *data, u32 data_buflen); 237 int netvsc_recv_callback(struct net_device *net, 238 struct netvsc_device *nvdev, 239 struct netvsc_channel *nvchan); 240 void netvsc_channel_cb(void *context); 241 int netvsc_poll(struct napi_struct *napi, int budget); 242 243 void netvsc_xdp_xmit(struct sk_buff *skb, struct net_device *ndev); 244 u32 netvsc_run_xdp(struct net_device *ndev, struct netvsc_channel *nvchan, 245 struct xdp_buff *xdp); 246 unsigned int netvsc_xdp_fraglen(unsigned int len); 247 struct bpf_prog *netvsc_xdp_get(struct netvsc_device *nvdev); 248 int netvsc_xdp_set(struct net_device *dev, struct bpf_prog *prog, 249 struct netlink_ext_ack *extack, 250 struct netvsc_device *nvdev); 251 int netvsc_vf_setxdp(struct net_device *vf_netdev, struct bpf_prog *prog); 252 int netvsc_bpf(struct net_device *dev, struct netdev_bpf *bpf); 253 int netvsc_ndoxdp_xmit(struct net_device *ndev, int n, 254 struct xdp_frame **frames, u32 flags); 255 256 int rndis_set_subchannel(struct net_device *ndev, 257 struct netvsc_device *nvdev, 258 struct netvsc_device_info *dev_info); 259 int rndis_filter_open(struct netvsc_device *nvdev); 260 int rndis_filter_close(struct netvsc_device *nvdev); 261 struct netvsc_device *rndis_filter_device_add(struct hv_device *dev, 262 struct netvsc_device_info *info); 263 void rndis_filter_update(struct netvsc_device *nvdev); 264 void rndis_filter_device_remove(struct hv_device *dev, 265 struct netvsc_device *nvdev); 266 int rndis_filter_set_rss_param(struct rndis_device *rdev, 267 const u8 *key); 268 int rndis_filter_set_offload_params(struct net_device *ndev, 269 struct netvsc_device *nvdev, 270 struct ndis_offload_params *req_offloads); 271 int rndis_filter_receive(struct net_device *ndev, 272 struct netvsc_device *net_dev, 273 struct netvsc_channel *nvchan, 274 void *data, u32 buflen); 275 276 int rndis_filter_set_device_mac(struct netvsc_device *ndev, 277 const char *mac); 278 279 int 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 289 290 enum { 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 }; 367 368 enum { 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 }; 379 380 struct 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 */ 391 struct 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 */ 401 struct nvsp_message_init_complete { 402 u32 negotiated_protocol_ver; 403 u32 max_mdl_chain_len; 404 u32 status; 405 } __packed; 406 407 union 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 */ 418 struct 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 */ 427 struct nvsp_1_message_send_receive_buffer { 428 u32 gpadl_handle; 429 u16 id; 430 } __packed; 431 432 struct 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 */ 444 struct 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 */ 475 struct 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 */ 483 struct 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 */ 493 struct 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 */ 509 struct 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 */ 517 struct 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 */ 540 struct nvsp_1_message_send_rndis_packet_complete { 541 u32 status; 542 }; 543 544 union 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 */ 565 struct 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; 580 581 struct 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 */ 588 struct 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 */ 599 struct 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; 611 612 struct nvsp_2_free_rxbuf { 613 u64 recv_buf_id; 614 } __packed; 615 616 union 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; 622 623 struct 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; 630 631 enum nvsp_vm_datapath { 632 NVSP_DATAPATH_SYNTHETIC = 0, 633 NVSP_DATAPATH_VF, 634 NVSP_DATAPATH_MAX 635 }; 636 637 struct nvsp_4_sw_datapath { 638 u32 active_datapath; /* active data path in VM */ 639 } __packed; 640 641 union nvsp_4_message_uber { 642 struct nvsp_4_send_vf_association vf_assoc; 643 struct nvsp_4_sw_datapath active_dp; 644 } __packed; 645 646 enum nvsp_subchannel_operation { 647 NVSP_SUBCHANNEL_NONE = 0, 648 NVSP_SUBCHANNEL_ALLOCATE, 649 NVSP_SUBCHANNEL_MAX 650 }; 651 652 struct nvsp_5_subchannel_request { 653 u32 op; 654 u32 num_subchannels; 655 } __packed; 656 657 struct nvsp_5_subchannel_complete { 658 u32 status; 659 u32 num_subchannels; /* Actual number of subchannels allocated */ 660 } __packed; 661 662 struct 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; 673 674 union 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; 679 680 enum 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 }; 692 693 struct grp_affinity { 694 u64 mask; 695 u16 grp; 696 u16 reserved[3]; 697 } __packed; 698 699 struct 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; 772 773 struct 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; 813 814 struct nvsp_6_pd_buf { 815 u32 region_offset; 816 u16 region_id; 817 u16 is_partial:1; 818 u16 reserved:15; 819 } __packed; 820 821 struct 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; 829 830 union nvsp_6_message_uber { 831 struct nvsp_6_pd_api_req pd_req; 832 struct nvsp_6_pd_api_comp pd_comp; 833 } __packed; 834 835 union 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 */ 845 struct 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 */ netvsc_rqstor_size(unsigned long ringbytes)899 static 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)) 915 916 struct 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 }; 921 922 struct recv_comp_data { 923 u64 tid; /* transaction id */ 924 u32 status; 925 }; 926 927 struct 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 */ 934 935 struct 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' */ 950 951 struct netvsc_stats_tx { 952 u64 packets; 953 u64 bytes; 954 u64 xdp_xmit; 955 struct u64_stats_sync syncp; 956 }; 957 958 struct 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 }; 968 969 struct 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 }; 982 983 struct 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 }; 993 994 struct 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 1003 struct 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 */ 1017 struct 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 */ netvsc_get_hash(struct sk_buff * skb,const struct net_device_context * ndc)1070 static 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 */ 1117 struct 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 */ 1137 struct 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 */ 1184 struct 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 */ 1192 struct 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. */ 1208 struct rndis_co_address_family { 1209 u32 address_family; 1210 u32 major_ver; 1211 u32 minor_ver; 1212 }; 1213 1214 /* NdisHalt message */ 1215 struct rndis_halt_request { 1216 u32 req_id; 1217 }; 1218 1219 /* NdisQueryRequest message */ 1220 struct 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 */ 1229 struct rndis_query_complete { 1230 u32 req_id; 1231 u32 status; 1232 u32 info_buflen; 1233 u32 info_buf_offset; 1234 }; 1235 1236 /* NdisSetRequest message */ 1237 struct 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 */ 1247 struct rndis_set_complete { 1248 u32 req_id; 1249 u32 status; 1250 }; 1251 1252 /* NdisReset message */ 1253 struct rndis_reset_request { 1254 u32 reserved; 1255 }; 1256 1257 /* Response to NdisReset */ 1258 struct rndis_reset_complete { 1259 u32 status; 1260 u32 addressing_reset; 1261 }; 1262 1263 /* NdisMIndicateStatus message */ 1264 struct 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. */ 1272 struct rndis_diagnostic_info { 1273 u32 diag_status; 1274 u32 error_offset; 1275 }; 1276 1277 /* NdisKeepAlive message */ 1278 struct rndis_keepalive_request { 1279 u32 req_id; 1280 }; 1281 1282 /* Response to NdisKeepAlive */ 1283 struct 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 */ 1293 struct 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. */ 1306 struct 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. */ 1313 struct rndis_per_packet_info { 1314 u32 size; 1315 u32 type:31; 1316 u32 internal:1; 1317 u32 ppi_offset; 1318 }; 1319 1320 enum 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 1337 enum 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 1350 struct rndis_pktinfo_id { 1351 u8 ver; 1352 u8 flag; 1353 u16 pkt_id; 1354 }; 1355 1356 struct 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 1405 struct 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 1441 struct ndis_lsov1_offload { 1442 u32 encap; 1443 u32 maxsize; 1444 u32 minsegs; 1445 u32 opts; 1446 }; 1447 1448 struct 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 1458 struct 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 1473 struct 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 1492 struct ndis_rsc_offload { 1493 u8 ip4; 1494 u8 ip6; 1495 }; 1496 1497 struct ndis_encap_offload { 1498 u32 flags; 1499 u32 maxhdr; 1500 }; 1501 1502 struct 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 1520 struct 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 1546 struct 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. */ 1597 struct 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 */ 1613 struct rcondis_mp_create_vc { 1614 u32 req_id; 1615 u32 ndis_vc_handle; 1616 }; 1617 1618 /* Response to CoNdisMiniportCreateVc */ 1619 struct rcondis_mp_create_vc_complete { 1620 u32 req_id; 1621 u32 dev_vc_handle; 1622 u32 status; 1623 }; 1624 1625 /* CoNdisMiniportDeleteVc message */ 1626 struct rcondis_mp_delete_vc { 1627 u32 req_id; 1628 u32 dev_vc_handle; 1629 }; 1630 1631 /* Response to CoNdisMiniportDeleteVc */ 1632 struct rcondis_mp_delete_vc_complete { 1633 u32 req_id; 1634 u32 status; 1635 }; 1636 1637 /* CoNdisMiniportQueryRequest message */ 1638 struct 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 */ 1648 struct 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 */ 1658 struct 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 */ 1666 struct rcondis_specific_parameters { 1667 u32 parameter_type; 1668 u32 parameter_length; 1669 u32 parameter_lffset; 1670 }; 1671 1672 struct rcondis_media_parameters { 1673 u32 flags; 1674 u32 reserved1; 1675 u32 reserved2; 1676 struct rcondis_specific_parameters media_specific; 1677 }; 1678 1679 struct 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 1690 struct 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 */ 1697 struct 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 */ 1708 struct rcondis_mp_activate_vc_complete { 1709 u32 req_id; 1710 u32 status; 1711 }; 1712 1713 /* CoNdisMiniportDeactivateVc message */ 1714 struct rcondis_mp_deactivate_vc_request { 1715 u32 req_id; 1716 u32 flags; 1717 u32 dev_vc_handle; 1718 }; 1719 1720 /* Response to CoNdisMiniportDeactivateVc */ 1721 struct rcondis_mp_deactivate_vc_complete { 1722 u32 req_id; 1723 u32 status; 1724 }; 1725 1726 1727 /* union with all of the RNDIS messages */ 1728 union 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 */ 1755 struct 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 1803 void netvsc_dma_unmap(struct hv_device *hv_dev, 1804 struct hv_netvsc_packet *packet); 1805 #endif /* _HYPERV_NET_H */ 1806