1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /******************************************************************************* 3 * 4 * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver 5 * Copyright(c) 2013 - 2014 Intel Corporation. 6 * 7 * Contact Information: 8 * e1000-devel Mailing List <[email protected]> 9 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 10 * 11 ******************************************************************************/ 12 13 #ifndef _VIRTCHNL_H_ 14 #define _VIRTCHNL_H_ 15 16 /* Description: 17 * This header file describes the VF-PF communication protocol used 18 * by the drivers for all devices starting from our 40G product line 19 * 20 * Admin queue buffer usage: 21 * desc->opcode is always aqc_opc_send_msg_to_pf 22 * flags, retval, datalen, and data addr are all used normally. 23 * The Firmware copies the cookie fields when sending messages between the 24 * PF and VF, but uses all other fields internally. Due to this limitation, 25 * we must send all messages as "indirect", i.e. using an external buffer. 26 * 27 * All the VSI indexes are relative to the VF. Each VF can have maximum of 28 * three VSIs. All the queue indexes are relative to the VSI. Each VF can 29 * have a maximum of sixteen queues for all of its VSIs. 30 * 31 * The PF is required to return a status code in v_retval for all messages 32 * except RESET_VF, which does not require any response. The return value 33 * is of status_code type, defined in the shared type.h. 34 * 35 * In general, VF driver initialization should roughly follow the order of 36 * these opcodes. The VF driver must first validate the API version of the 37 * PF driver, then request a reset, then get resources, then configure 38 * queues and interrupts. After these operations are complete, the VF 39 * driver may start its queues, optionally add MAC and VLAN filters, and 40 * process traffic. 41 */ 42 43 /* START GENERIC DEFINES 44 * Need to ensure the following enums and defines hold the same meaning and 45 * value in current and future projects 46 */ 47 48 /* Error Codes */ 49 enum virtchnl_status_code { 50 VIRTCHNL_STATUS_SUCCESS = 0, 51 VIRTCHNL_STATUS_ERR_PARAM = -5, 52 VIRTCHNL_STATUS_ERR_NO_MEMORY = -18, 53 VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH = -38, 54 VIRTCHNL_STATUS_ERR_CQP_COMPL_ERROR = -39, 55 VIRTCHNL_STATUS_ERR_INVALID_VF_ID = -40, 56 VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR = -53, 57 VIRTCHNL_STATUS_ERR_NOT_SUPPORTED = -64, 58 }; 59 60 /* Backward compatibility */ 61 #define VIRTCHNL_ERR_PARAM VIRTCHNL_STATUS_ERR_PARAM 62 #define VIRTCHNL_STATUS_NOT_SUPPORTED VIRTCHNL_STATUS_ERR_NOT_SUPPORTED 63 64 #define VIRTCHNL_LINK_SPEED_2_5GB_SHIFT 0x0 65 #define VIRTCHNL_LINK_SPEED_100MB_SHIFT 0x1 66 #define VIRTCHNL_LINK_SPEED_1000MB_SHIFT 0x2 67 #define VIRTCHNL_LINK_SPEED_10GB_SHIFT 0x3 68 #define VIRTCHNL_LINK_SPEED_40GB_SHIFT 0x4 69 #define VIRTCHNL_LINK_SPEED_20GB_SHIFT 0x5 70 #define VIRTCHNL_LINK_SPEED_25GB_SHIFT 0x6 71 #define VIRTCHNL_LINK_SPEED_5GB_SHIFT 0x7 72 73 enum virtchnl_link_speed { 74 VIRTCHNL_LINK_SPEED_UNKNOWN = 0, 75 VIRTCHNL_LINK_SPEED_100MB = BIT(VIRTCHNL_LINK_SPEED_100MB_SHIFT), 76 VIRTCHNL_LINK_SPEED_1GB = BIT(VIRTCHNL_LINK_SPEED_1000MB_SHIFT), 77 VIRTCHNL_LINK_SPEED_10GB = BIT(VIRTCHNL_LINK_SPEED_10GB_SHIFT), 78 VIRTCHNL_LINK_SPEED_40GB = BIT(VIRTCHNL_LINK_SPEED_40GB_SHIFT), 79 VIRTCHNL_LINK_SPEED_20GB = BIT(VIRTCHNL_LINK_SPEED_20GB_SHIFT), 80 VIRTCHNL_LINK_SPEED_25GB = BIT(VIRTCHNL_LINK_SPEED_25GB_SHIFT), 81 VIRTCHNL_LINK_SPEED_2_5GB = BIT(VIRTCHNL_LINK_SPEED_2_5GB_SHIFT), 82 VIRTCHNL_LINK_SPEED_5GB = BIT(VIRTCHNL_LINK_SPEED_5GB_SHIFT), 83 }; 84 85 /* for hsplit_0 field of Rx HMC context */ 86 /* deprecated with AVF 1.0 */ 87 enum virtchnl_rx_hsplit { 88 VIRTCHNL_RX_HSPLIT_NO_SPLIT = 0, 89 VIRTCHNL_RX_HSPLIT_SPLIT_L2 = 1, 90 VIRTCHNL_RX_HSPLIT_SPLIT_IP = 2, 91 VIRTCHNL_RX_HSPLIT_SPLIT_TCP_UDP = 4, 92 VIRTCHNL_RX_HSPLIT_SPLIT_SCTP = 8, 93 }; 94 95 /* END GENERIC DEFINES */ 96 97 /* Opcodes for VF-PF communication. These are placed in the v_opcode field 98 * of the virtchnl_msg structure. 99 */ 100 enum virtchnl_ops { 101 /* The PF sends status change events to VFs using 102 * the VIRTCHNL_OP_EVENT opcode. 103 * VFs send requests to the PF using the other ops. 104 * Use of "advanced opcode" features must be negotiated as part of capabilities 105 * exchange and are not considered part of base mode feature set. 106 */ 107 VIRTCHNL_OP_UNKNOWN = 0, 108 VIRTCHNL_OP_VERSION = 1, /* must ALWAYS be 1 */ 109 VIRTCHNL_OP_RESET_VF = 2, 110 VIRTCHNL_OP_GET_VF_RESOURCES = 3, 111 VIRTCHNL_OP_CONFIG_TX_QUEUE = 4, 112 VIRTCHNL_OP_CONFIG_RX_QUEUE = 5, 113 VIRTCHNL_OP_CONFIG_VSI_QUEUES = 6, 114 VIRTCHNL_OP_CONFIG_IRQ_MAP = 7, 115 VIRTCHNL_OP_ENABLE_QUEUES = 8, 116 VIRTCHNL_OP_DISABLE_QUEUES = 9, 117 VIRTCHNL_OP_ADD_ETH_ADDR = 10, 118 VIRTCHNL_OP_DEL_ETH_ADDR = 11, 119 VIRTCHNL_OP_ADD_VLAN = 12, 120 VIRTCHNL_OP_DEL_VLAN = 13, 121 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE = 14, 122 VIRTCHNL_OP_GET_STATS = 15, 123 VIRTCHNL_OP_RSVD = 16, 124 VIRTCHNL_OP_EVENT = 17, /* must ALWAYS be 17 */ 125 VIRTCHNL_OP_IWARP = 20, /* advanced opcode */ 126 VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP = 21, /* advanced opcode */ 127 VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP = 22, /* advanced opcode */ 128 VIRTCHNL_OP_CONFIG_RSS_KEY = 23, 129 VIRTCHNL_OP_CONFIG_RSS_LUT = 24, 130 VIRTCHNL_OP_GET_RSS_HENA_CAPS = 25, 131 VIRTCHNL_OP_SET_RSS_HENA = 26, 132 VIRTCHNL_OP_ENABLE_VLAN_STRIPPING = 27, 133 VIRTCHNL_OP_DISABLE_VLAN_STRIPPING = 28, 134 VIRTCHNL_OP_REQUEST_QUEUES = 29, 135 VIRTCHNL_OP_ENABLE_CHANNELS = 30, 136 VIRTCHNL_OP_DISABLE_CHANNELS = 31, 137 VIRTCHNL_OP_ADD_CLOUD_FILTER = 32, 138 VIRTCHNL_OP_DEL_CLOUD_FILTER = 33, 139 /* opcode 34 - 46 are reserved */ 140 VIRTCHNL_OP_ADD_FDIR_FILTER = 47, 141 VIRTCHNL_OP_DEL_FDIR_FILTER = 48, 142 }; 143 144 /* These macros are used to generate compilation errors if a structure/union 145 * is not exactly the correct length. It gives a divide by zero error if the 146 * structure/union is not of the correct size, otherwise it creates an enum 147 * that is never used. 148 */ 149 #define VIRTCHNL_CHECK_STRUCT_LEN(n, X) enum virtchnl_static_assert_enum_##X \ 150 { virtchnl_static_assert_##X = (n)/((sizeof(struct X) == (n)) ? 1 : 0) } 151 #define VIRTCHNL_CHECK_UNION_LEN(n, X) enum virtchnl_static_asset_enum_##X \ 152 { virtchnl_static_assert_##X = (n)/((sizeof(union X) == (n)) ? 1 : 0) } 153 154 /* Virtual channel message descriptor. This overlays the admin queue 155 * descriptor. All other data is passed in external buffers. 156 */ 157 158 struct virtchnl_msg { 159 u8 pad[8]; /* AQ flags/opcode/len/retval fields */ 160 enum virtchnl_ops v_opcode; /* avoid confusion with desc->opcode */ 161 enum virtchnl_status_code v_retval; /* ditto for desc->retval */ 162 u32 vfid; /* used by PF when sending to VF */ 163 }; 164 165 VIRTCHNL_CHECK_STRUCT_LEN(20, virtchnl_msg); 166 167 /* Message descriptions and data structures. */ 168 169 /* VIRTCHNL_OP_VERSION 170 * VF posts its version number to the PF. PF responds with its version number 171 * in the same format, along with a return code. 172 * Reply from PF has its major/minor versions also in param0 and param1. 173 * If there is a major version mismatch, then the VF cannot operate. 174 * If there is a minor version mismatch, then the VF can operate but should 175 * add a warning to the system log. 176 * 177 * This enum element MUST always be specified as == 1, regardless of other 178 * changes in the API. The PF must always respond to this message without 179 * error regardless of version mismatch. 180 */ 181 #define VIRTCHNL_VERSION_MAJOR 1 182 #define VIRTCHNL_VERSION_MINOR 1 183 #define VIRTCHNL_VERSION_MINOR_NO_VF_CAPS 0 184 185 struct virtchnl_version_info { 186 u32 major; 187 u32 minor; 188 }; 189 190 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_version_info); 191 192 #define VF_IS_V10(_v) (((_v)->major == 1) && ((_v)->minor == 0)) 193 #define VF_IS_V11(_ver) (((_ver)->major == 1) && ((_ver)->minor == 1)) 194 195 /* VIRTCHNL_OP_RESET_VF 196 * VF sends this request to PF with no parameters 197 * PF does NOT respond! VF driver must delay then poll VFGEN_RSTAT register 198 * until reset completion is indicated. The admin queue must be reinitialized 199 * after this operation. 200 * 201 * When reset is complete, PF must ensure that all queues in all VSIs associated 202 * with the VF are stopped, all queue configurations in the HMC are set to 0, 203 * and all MAC and VLAN filters (except the default MAC address) on all VSIs 204 * are cleared. 205 */ 206 207 /* VSI types that use VIRTCHNL interface for VF-PF communication. VSI_SRIOV 208 * vsi_type should always be 6 for backward compatibility. Add other fields 209 * as needed. 210 */ 211 enum virtchnl_vsi_type { 212 VIRTCHNL_VSI_TYPE_INVALID = 0, 213 VIRTCHNL_VSI_SRIOV = 6, 214 }; 215 216 /* VIRTCHNL_OP_GET_VF_RESOURCES 217 * Version 1.0 VF sends this request to PF with no parameters 218 * Version 1.1 VF sends this request to PF with u32 bitmap of its capabilities 219 * PF responds with an indirect message containing 220 * virtchnl_vf_resource and one or more 221 * virtchnl_vsi_resource structures. 222 */ 223 224 struct virtchnl_vsi_resource { 225 u16 vsi_id; 226 u16 num_queue_pairs; 227 enum virtchnl_vsi_type vsi_type; 228 u16 qset_handle; 229 u8 default_mac_addr[ETH_ALEN]; 230 }; 231 232 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource); 233 234 /* VF capability flags 235 * VIRTCHNL_VF_OFFLOAD_L2 flag is inclusive of base mode L2 offloads including 236 * TX/RX Checksum offloading and TSO for non-tunnelled packets. 237 */ 238 #define VIRTCHNL_VF_OFFLOAD_L2 0x00000001 239 #define VIRTCHNL_VF_OFFLOAD_IWARP 0x00000002 240 #define VIRTCHNL_VF_OFFLOAD_RSVD 0x00000004 241 #define VIRTCHNL_VF_OFFLOAD_RSS_AQ 0x00000008 242 #define VIRTCHNL_VF_OFFLOAD_RSS_REG 0x00000010 243 #define VIRTCHNL_VF_OFFLOAD_WB_ON_ITR 0x00000020 244 #define VIRTCHNL_VF_OFFLOAD_REQ_QUEUES 0x00000040 245 #define VIRTCHNL_VF_OFFLOAD_VLAN 0x00010000 246 #define VIRTCHNL_VF_OFFLOAD_RX_POLLING 0x00020000 247 #define VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2 0x00040000 248 #define VIRTCHNL_VF_OFFLOAD_RSS_PF 0X00080000 249 #define VIRTCHNL_VF_OFFLOAD_ENCAP 0X00100000 250 #define VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM 0X00200000 251 #define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM 0X00400000 252 #define VIRTCHNL_VF_OFFLOAD_ADQ 0X00800000 253 #define VIRTCHNL_VF_OFFLOAD_FDIR_PF 0X10000000 254 255 /* Define below the capability flags that are not offloads */ 256 #define VIRTCHNL_VF_CAP_ADV_LINK_SPEED 0x00000080 257 #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \ 258 VIRTCHNL_VF_OFFLOAD_VLAN | \ 259 VIRTCHNL_VF_OFFLOAD_RSS_PF) 260 261 struct virtchnl_vf_resource { 262 u16 num_vsis; 263 u16 num_queue_pairs; 264 u16 max_vectors; 265 u16 max_mtu; 266 267 u32 vf_cap_flags; 268 u32 rss_key_size; 269 u32 rss_lut_size; 270 271 struct virtchnl_vsi_resource vsi_res[1]; 272 }; 273 274 VIRTCHNL_CHECK_STRUCT_LEN(36, virtchnl_vf_resource); 275 276 /* VIRTCHNL_OP_CONFIG_TX_QUEUE 277 * VF sends this message to set up parameters for one TX queue. 278 * External data buffer contains one instance of virtchnl_txq_info. 279 * PF configures requested queue and returns a status code. 280 */ 281 282 /* Tx queue config info */ 283 struct virtchnl_txq_info { 284 u16 vsi_id; 285 u16 queue_id; 286 u16 ring_len; /* number of descriptors, multiple of 8 */ 287 u16 headwb_enabled; /* deprecated with AVF 1.0 */ 288 u64 dma_ring_addr; 289 u64 dma_headwb_addr; /* deprecated with AVF 1.0 */ 290 }; 291 292 VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_txq_info); 293 294 /* VIRTCHNL_OP_CONFIG_RX_QUEUE 295 * VF sends this message to set up parameters for one RX queue. 296 * External data buffer contains one instance of virtchnl_rxq_info. 297 * PF configures requested queue and returns a status code. 298 */ 299 300 /* Rx queue config info */ 301 struct virtchnl_rxq_info { 302 u16 vsi_id; 303 u16 queue_id; 304 u32 ring_len; /* number of descriptors, multiple of 32 */ 305 u16 hdr_size; 306 u16 splithdr_enabled; /* deprecated with AVF 1.0 */ 307 u32 databuffer_size; 308 u32 max_pkt_size; 309 u32 pad1; 310 u64 dma_ring_addr; 311 enum virtchnl_rx_hsplit rx_split_pos; /* deprecated with AVF 1.0 */ 312 u32 pad2; 313 }; 314 315 VIRTCHNL_CHECK_STRUCT_LEN(40, virtchnl_rxq_info); 316 317 /* VIRTCHNL_OP_CONFIG_VSI_QUEUES 318 * VF sends this message to set parameters for all active TX and RX queues 319 * associated with the specified VSI. 320 * PF configures queues and returns status. 321 * If the number of queues specified is greater than the number of queues 322 * associated with the VSI, an error is returned and no queues are configured. 323 */ 324 struct virtchnl_queue_pair_info { 325 /* NOTE: vsi_id and queue_id should be identical for both queues. */ 326 struct virtchnl_txq_info txq; 327 struct virtchnl_rxq_info rxq; 328 }; 329 330 VIRTCHNL_CHECK_STRUCT_LEN(64, virtchnl_queue_pair_info); 331 332 struct virtchnl_vsi_queue_config_info { 333 u16 vsi_id; 334 u16 num_queue_pairs; 335 u32 pad; 336 struct virtchnl_queue_pair_info qpair[1]; 337 }; 338 339 VIRTCHNL_CHECK_STRUCT_LEN(72, virtchnl_vsi_queue_config_info); 340 341 /* VIRTCHNL_OP_REQUEST_QUEUES 342 * VF sends this message to request the PF to allocate additional queues to 343 * this VF. Each VF gets a guaranteed number of queues on init but asking for 344 * additional queues must be negotiated. This is a best effort request as it 345 * is possible the PF does not have enough queues left to support the request. 346 * If the PF cannot support the number requested it will respond with the 347 * maximum number it is able to support. If the request is successful, PF will 348 * then reset the VF to institute required changes. 349 */ 350 351 /* VF resource request */ 352 struct virtchnl_vf_res_request { 353 u16 num_queue_pairs; 354 }; 355 356 /* VIRTCHNL_OP_CONFIG_IRQ_MAP 357 * VF uses this message to map vectors to queues. 358 * The rxq_map and txq_map fields are bitmaps used to indicate which queues 359 * are to be associated with the specified vector. 360 * The "other" causes are always mapped to vector 0. 361 * PF configures interrupt mapping and returns status. 362 */ 363 struct virtchnl_vector_map { 364 u16 vsi_id; 365 u16 vector_id; 366 u16 rxq_map; 367 u16 txq_map; 368 u16 rxitr_idx; 369 u16 txitr_idx; 370 }; 371 372 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_vector_map); 373 374 struct virtchnl_irq_map_info { 375 u16 num_vectors; 376 struct virtchnl_vector_map vecmap[1]; 377 }; 378 379 VIRTCHNL_CHECK_STRUCT_LEN(14, virtchnl_irq_map_info); 380 381 /* VIRTCHNL_OP_ENABLE_QUEUES 382 * VIRTCHNL_OP_DISABLE_QUEUES 383 * VF sends these message to enable or disable TX/RX queue pairs. 384 * The queues fields are bitmaps indicating which queues to act upon. 385 * (Currently, we only support 16 queues per VF, but we make the field 386 * u32 to allow for expansion.) 387 * PF performs requested action and returns status. 388 */ 389 struct virtchnl_queue_select { 390 u16 vsi_id; 391 u16 pad; 392 u32 rx_queues; 393 u32 tx_queues; 394 }; 395 396 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_queue_select); 397 398 /* VIRTCHNL_OP_ADD_ETH_ADDR 399 * VF sends this message in order to add one or more unicast or multicast 400 * address filters for the specified VSI. 401 * PF adds the filters and returns status. 402 */ 403 404 /* VIRTCHNL_OP_DEL_ETH_ADDR 405 * VF sends this message in order to remove one or more unicast or multicast 406 * filters for the specified VSI. 407 * PF removes the filters and returns status. 408 */ 409 410 struct virtchnl_ether_addr { 411 u8 addr[ETH_ALEN]; 412 u8 pad[2]; 413 }; 414 415 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_ether_addr); 416 417 struct virtchnl_ether_addr_list { 418 u16 vsi_id; 419 u16 num_elements; 420 struct virtchnl_ether_addr list[1]; 421 }; 422 423 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_ether_addr_list); 424 425 /* VIRTCHNL_OP_ADD_VLAN 426 * VF sends this message to add one or more VLAN tag filters for receives. 427 * PF adds the filters and returns status. 428 * If a port VLAN is configured by the PF, this operation will return an 429 * error to the VF. 430 */ 431 432 /* VIRTCHNL_OP_DEL_VLAN 433 * VF sends this message to remove one or more VLAN tag filters for receives. 434 * PF removes the filters and returns status. 435 * If a port VLAN is configured by the PF, this operation will return an 436 * error to the VF. 437 */ 438 439 struct virtchnl_vlan_filter_list { 440 u16 vsi_id; 441 u16 num_elements; 442 u16 vlan_id[1]; 443 }; 444 445 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_vlan_filter_list); 446 447 /* VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE 448 * VF sends VSI id and flags. 449 * PF returns status code in retval. 450 * Note: we assume that broadcast accept mode is always enabled. 451 */ 452 struct virtchnl_promisc_info { 453 u16 vsi_id; 454 u16 flags; 455 }; 456 457 VIRTCHNL_CHECK_STRUCT_LEN(4, virtchnl_promisc_info); 458 459 #define FLAG_VF_UNICAST_PROMISC 0x00000001 460 #define FLAG_VF_MULTICAST_PROMISC 0x00000002 461 462 /* VIRTCHNL_OP_GET_STATS 463 * VF sends this message to request stats for the selected VSI. VF uses 464 * the virtchnl_queue_select struct to specify the VSI. The queue_id 465 * field is ignored by the PF. 466 * 467 * PF replies with struct eth_stats in an external buffer. 468 */ 469 470 /* VIRTCHNL_OP_CONFIG_RSS_KEY 471 * VIRTCHNL_OP_CONFIG_RSS_LUT 472 * VF sends these messages to configure RSS. Only supported if both PF 473 * and VF drivers set the VIRTCHNL_VF_OFFLOAD_RSS_PF bit during 474 * configuration negotiation. If this is the case, then the RSS fields in 475 * the VF resource struct are valid. 476 * Both the key and LUT are initialized to 0 by the PF, meaning that 477 * RSS is effectively disabled until set up by the VF. 478 */ 479 struct virtchnl_rss_key { 480 u16 vsi_id; 481 u16 key_len; 482 u8 key[1]; /* RSS hash key, packed bytes */ 483 u8 pad[1]; 484 }; 485 486 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_key); 487 488 struct virtchnl_rss_lut { 489 u16 vsi_id; 490 u16 lut_entries; 491 u8 lut[1]; /* RSS lookup table */ 492 u8 pad[1]; 493 }; 494 495 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_lut); 496 497 /* VIRTCHNL_OP_GET_RSS_HENA_CAPS 498 * VIRTCHNL_OP_SET_RSS_HENA 499 * VF sends these messages to get and set the hash filter enable bits for RSS. 500 * By default, the PF sets these to all possible traffic types that the 501 * hardware supports. The VF can query this value if it wants to change the 502 * traffic types that are hashed by the hardware. 503 */ 504 struct virtchnl_rss_hena { 505 u64 hena; 506 }; 507 508 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_rss_hena); 509 510 /* VIRTCHNL_OP_ENABLE_CHANNELS 511 * VIRTCHNL_OP_DISABLE_CHANNELS 512 * VF sends these messages to enable or disable channels based on 513 * the user specified queue count and queue offset for each traffic class. 514 * This struct encompasses all the information that the PF needs from 515 * VF to create a channel. 516 */ 517 struct virtchnl_channel_info { 518 u16 count; /* number of queues in a channel */ 519 u16 offset; /* queues in a channel start from 'offset' */ 520 u32 pad; 521 u64 max_tx_rate; 522 }; 523 524 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_channel_info); 525 526 struct virtchnl_tc_info { 527 u32 num_tc; 528 u32 pad; 529 struct virtchnl_channel_info list[1]; 530 }; 531 532 VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_tc_info); 533 534 /* VIRTCHNL_ADD_CLOUD_FILTER 535 * VIRTCHNL_DEL_CLOUD_FILTER 536 * VF sends these messages to add or delete a cloud filter based on the 537 * user specified match and action filters. These structures encompass 538 * all the information that the PF needs from the VF to add/delete a 539 * cloud filter. 540 */ 541 542 struct virtchnl_l4_spec { 543 u8 src_mac[ETH_ALEN]; 544 u8 dst_mac[ETH_ALEN]; 545 __be16 vlan_id; 546 __be16 pad; /* reserved for future use */ 547 __be32 src_ip[4]; 548 __be32 dst_ip[4]; 549 __be16 src_port; 550 __be16 dst_port; 551 }; 552 553 VIRTCHNL_CHECK_STRUCT_LEN(52, virtchnl_l4_spec); 554 555 union virtchnl_flow_spec { 556 struct virtchnl_l4_spec tcp_spec; 557 u8 buffer[128]; /* reserved for future use */ 558 }; 559 560 VIRTCHNL_CHECK_UNION_LEN(128, virtchnl_flow_spec); 561 562 enum virtchnl_action { 563 /* action types */ 564 VIRTCHNL_ACTION_DROP = 0, 565 VIRTCHNL_ACTION_TC_REDIRECT, 566 VIRTCHNL_ACTION_PASSTHRU, 567 VIRTCHNL_ACTION_QUEUE, 568 VIRTCHNL_ACTION_Q_REGION, 569 VIRTCHNL_ACTION_MARK, 570 VIRTCHNL_ACTION_COUNT, 571 }; 572 573 enum virtchnl_flow_type { 574 /* flow types */ 575 VIRTCHNL_TCP_V4_FLOW = 0, 576 VIRTCHNL_TCP_V6_FLOW, 577 }; 578 579 struct virtchnl_filter { 580 union virtchnl_flow_spec data; 581 union virtchnl_flow_spec mask; 582 enum virtchnl_flow_type flow_type; 583 enum virtchnl_action action; 584 u32 action_meta; 585 u8 field_flags; 586 u8 pad[3]; 587 }; 588 589 VIRTCHNL_CHECK_STRUCT_LEN(272, virtchnl_filter); 590 591 /* VIRTCHNL_OP_EVENT 592 * PF sends this message to inform the VF driver of events that may affect it. 593 * No direct response is expected from the VF, though it may generate other 594 * messages in response to this one. 595 */ 596 enum virtchnl_event_codes { 597 VIRTCHNL_EVENT_UNKNOWN = 0, 598 VIRTCHNL_EVENT_LINK_CHANGE, 599 VIRTCHNL_EVENT_RESET_IMPENDING, 600 VIRTCHNL_EVENT_PF_DRIVER_CLOSE, 601 }; 602 603 #define PF_EVENT_SEVERITY_INFO 0 604 #define PF_EVENT_SEVERITY_CERTAIN_DOOM 255 605 606 struct virtchnl_pf_event { 607 enum virtchnl_event_codes event; 608 union { 609 /* If the PF driver does not support the new speed reporting 610 * capabilities then use link_event else use link_event_adv to 611 * get the speed and link information. The ability to understand 612 * new speeds is indicated by setting the capability flag 613 * VIRTCHNL_VF_CAP_ADV_LINK_SPEED in vf_cap_flags parameter 614 * in virtchnl_vf_resource struct and can be used to determine 615 * which link event struct to use below. 616 */ 617 struct { 618 enum virtchnl_link_speed link_speed; 619 bool link_status; 620 } link_event; 621 struct { 622 /* link_speed provided in Mbps */ 623 u32 link_speed; 624 u8 link_status; 625 u8 pad[3]; 626 } link_event_adv; 627 } event_data; 628 629 int severity; 630 }; 631 632 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_pf_event); 633 634 /* VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP 635 * VF uses this message to request PF to map IWARP vectors to IWARP queues. 636 * The request for this originates from the VF IWARP driver through 637 * a client interface between VF LAN and VF IWARP driver. 638 * A vector could have an AEQ and CEQ attached to it although 639 * there is a single AEQ per VF IWARP instance in which case 640 * most vectors will have an INVALID_IDX for aeq and valid idx for ceq. 641 * There will never be a case where there will be multiple CEQs attached 642 * to a single vector. 643 * PF configures interrupt mapping and returns status. 644 */ 645 646 struct virtchnl_iwarp_qv_info { 647 u32 v_idx; /* msix_vector */ 648 u16 ceq_idx; 649 u16 aeq_idx; 650 u8 itr_idx; 651 u8 pad[3]; 652 }; 653 654 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_iwarp_qv_info); 655 656 struct virtchnl_iwarp_qvlist_info { 657 u32 num_vectors; 658 struct virtchnl_iwarp_qv_info qv_info[1]; 659 }; 660 661 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_iwarp_qvlist_info); 662 663 /* VF reset states - these are written into the RSTAT register: 664 * VFGEN_RSTAT on the VF 665 * When the PF initiates a reset, it writes 0 666 * When the reset is complete, it writes 1 667 * When the PF detects that the VF has recovered, it writes 2 668 * VF checks this register periodically to determine if a reset has occurred, 669 * then polls it to know when the reset is complete. 670 * If either the PF or VF reads the register while the hardware 671 * is in a reset state, it will return DEADBEEF, which, when masked 672 * will result in 3. 673 */ 674 enum virtchnl_vfr_states { 675 VIRTCHNL_VFR_INPROGRESS = 0, 676 VIRTCHNL_VFR_COMPLETED, 677 VIRTCHNL_VFR_VFACTIVE, 678 }; 679 680 #define VIRTCHNL_MAX_NUM_PROTO_HDRS 32 681 #define PROTO_HDR_SHIFT 5 682 #define PROTO_HDR_FIELD_START(proto_hdr_type) ((proto_hdr_type) << PROTO_HDR_SHIFT) 683 #define PROTO_HDR_FIELD_MASK ((1UL << PROTO_HDR_SHIFT) - 1) 684 685 /* VF use these macros to configure each protocol header. 686 * Specify which protocol headers and protocol header fields base on 687 * virtchnl_proto_hdr_type and virtchnl_proto_hdr_field. 688 * @param hdr: a struct of virtchnl_proto_hdr 689 * @param hdr_type: ETH/IPV4/TCP, etc 690 * @param field: SRC/DST/TEID/SPI, etc 691 */ 692 #define VIRTCHNL_ADD_PROTO_HDR_FIELD(hdr, field) \ 693 ((hdr)->field_selector |= BIT((field) & PROTO_HDR_FIELD_MASK)) 694 #define VIRTCHNL_DEL_PROTO_HDR_FIELD(hdr, field) \ 695 ((hdr)->field_selector &= ~BIT((field) & PROTO_HDR_FIELD_MASK)) 696 #define VIRTCHNL_TEST_PROTO_HDR_FIELD(hdr, val) \ 697 ((hdr)->field_selector & BIT((val) & PROTO_HDR_FIELD_MASK)) 698 #define VIRTCHNL_GET_PROTO_HDR_FIELD(hdr) ((hdr)->field_selector) 699 700 #define VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, hdr_type, field) \ 701 (VIRTCHNL_ADD_PROTO_HDR_FIELD(hdr, \ 702 VIRTCHNL_PROTO_HDR_ ## hdr_type ## _ ## field)) 703 #define VIRTCHNL_DEL_PROTO_HDR_FIELD_BIT(hdr, hdr_type, field) \ 704 (VIRTCHNL_DEL_PROTO_HDR_FIELD(hdr, \ 705 VIRTCHNL_PROTO_HDR_ ## hdr_type ## _ ## field)) 706 707 #define VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, hdr_type) \ 708 ((hdr)->type = VIRTCHNL_PROTO_HDR_ ## hdr_type) 709 #define VIRTCHNL_GET_PROTO_HDR_TYPE(hdr) \ 710 (((hdr)->type) >> PROTO_HDR_SHIFT) 711 #define VIRTCHNL_TEST_PROTO_HDR_TYPE(hdr, val) \ 712 ((hdr)->type == ((val) >> PROTO_HDR_SHIFT)) 713 #define VIRTCHNL_TEST_PROTO_HDR(hdr, val) \ 714 (VIRTCHNL_TEST_PROTO_HDR_TYPE((hdr), (val)) && \ 715 VIRTCHNL_TEST_PROTO_HDR_FIELD((hdr), (val))) 716 717 /* Protocol header type within a packet segment. A segment consists of one or 718 * more protocol headers that make up a logical group of protocol headers. Each 719 * logical group of protocol headers encapsulates or is encapsulated using/by 720 * tunneling or encapsulation protocols for network virtualization. 721 */ 722 enum virtchnl_proto_hdr_type { 723 VIRTCHNL_PROTO_HDR_NONE, 724 VIRTCHNL_PROTO_HDR_ETH, 725 VIRTCHNL_PROTO_HDR_S_VLAN, 726 VIRTCHNL_PROTO_HDR_C_VLAN, 727 VIRTCHNL_PROTO_HDR_IPV4, 728 VIRTCHNL_PROTO_HDR_IPV6, 729 VIRTCHNL_PROTO_HDR_TCP, 730 VIRTCHNL_PROTO_HDR_UDP, 731 VIRTCHNL_PROTO_HDR_SCTP, 732 VIRTCHNL_PROTO_HDR_GTPU_IP, 733 VIRTCHNL_PROTO_HDR_GTPU_EH, 734 VIRTCHNL_PROTO_HDR_GTPU_EH_PDU_DWN, 735 VIRTCHNL_PROTO_HDR_GTPU_EH_PDU_UP, 736 VIRTCHNL_PROTO_HDR_PPPOE, 737 VIRTCHNL_PROTO_HDR_L2TPV3, 738 VIRTCHNL_PROTO_HDR_ESP, 739 VIRTCHNL_PROTO_HDR_AH, 740 VIRTCHNL_PROTO_HDR_PFCP, 741 }; 742 743 /* Protocol header field within a protocol header. */ 744 enum virtchnl_proto_hdr_field { 745 /* ETHER */ 746 VIRTCHNL_PROTO_HDR_ETH_SRC = 747 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_ETH), 748 VIRTCHNL_PROTO_HDR_ETH_DST, 749 VIRTCHNL_PROTO_HDR_ETH_ETHERTYPE, 750 /* S-VLAN */ 751 VIRTCHNL_PROTO_HDR_S_VLAN_ID = 752 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_S_VLAN), 753 /* C-VLAN */ 754 VIRTCHNL_PROTO_HDR_C_VLAN_ID = 755 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_C_VLAN), 756 /* IPV4 */ 757 VIRTCHNL_PROTO_HDR_IPV4_SRC = 758 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_IPV4), 759 VIRTCHNL_PROTO_HDR_IPV4_DST, 760 VIRTCHNL_PROTO_HDR_IPV4_DSCP, 761 VIRTCHNL_PROTO_HDR_IPV4_TTL, 762 VIRTCHNL_PROTO_HDR_IPV4_PROT, 763 /* IPV6 */ 764 VIRTCHNL_PROTO_HDR_IPV6_SRC = 765 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_IPV6), 766 VIRTCHNL_PROTO_HDR_IPV6_DST, 767 VIRTCHNL_PROTO_HDR_IPV6_TC, 768 VIRTCHNL_PROTO_HDR_IPV6_HOP_LIMIT, 769 VIRTCHNL_PROTO_HDR_IPV6_PROT, 770 /* TCP */ 771 VIRTCHNL_PROTO_HDR_TCP_SRC_PORT = 772 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_TCP), 773 VIRTCHNL_PROTO_HDR_TCP_DST_PORT, 774 /* UDP */ 775 VIRTCHNL_PROTO_HDR_UDP_SRC_PORT = 776 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_UDP), 777 VIRTCHNL_PROTO_HDR_UDP_DST_PORT, 778 /* SCTP */ 779 VIRTCHNL_PROTO_HDR_SCTP_SRC_PORT = 780 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_SCTP), 781 VIRTCHNL_PROTO_HDR_SCTP_DST_PORT, 782 /* GTPU_IP */ 783 VIRTCHNL_PROTO_HDR_GTPU_IP_TEID = 784 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_GTPU_IP), 785 /* GTPU_EH */ 786 VIRTCHNL_PROTO_HDR_GTPU_EH_PDU = 787 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_GTPU_EH), 788 VIRTCHNL_PROTO_HDR_GTPU_EH_QFI, 789 /* PPPOE */ 790 VIRTCHNL_PROTO_HDR_PPPOE_SESS_ID = 791 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_PPPOE), 792 /* L2TPV3 */ 793 VIRTCHNL_PROTO_HDR_L2TPV3_SESS_ID = 794 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_L2TPV3), 795 /* ESP */ 796 VIRTCHNL_PROTO_HDR_ESP_SPI = 797 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_ESP), 798 /* AH */ 799 VIRTCHNL_PROTO_HDR_AH_SPI = 800 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_AH), 801 /* PFCP */ 802 VIRTCHNL_PROTO_HDR_PFCP_S_FIELD = 803 PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_PFCP), 804 VIRTCHNL_PROTO_HDR_PFCP_SEID, 805 }; 806 807 struct virtchnl_proto_hdr { 808 enum virtchnl_proto_hdr_type type; 809 u32 field_selector; /* a bit mask to select field for header type */ 810 u8 buffer[64]; 811 /** 812 * binary buffer in network order for specific header type. 813 * For example, if type = VIRTCHNL_PROTO_HDR_IPV4, a IPv4 814 * header is expected to be copied into the buffer. 815 */ 816 }; 817 818 VIRTCHNL_CHECK_STRUCT_LEN(72, virtchnl_proto_hdr); 819 820 struct virtchnl_proto_hdrs { 821 u8 tunnel_level; 822 /** 823 * specify where protocol header start from. 824 * 0 - from the outer layer 825 * 1 - from the first inner layer 826 * 2 - from the second inner layer 827 * .... 828 **/ 829 int count; /* the proto layers must < VIRTCHNL_MAX_NUM_PROTO_HDRS */ 830 struct virtchnl_proto_hdr proto_hdr[VIRTCHNL_MAX_NUM_PROTO_HDRS]; 831 }; 832 833 VIRTCHNL_CHECK_STRUCT_LEN(2312, virtchnl_proto_hdrs); 834 835 /* action configuration for FDIR */ 836 struct virtchnl_filter_action { 837 enum virtchnl_action type; 838 union { 839 /* used for queue and qgroup action */ 840 struct { 841 u16 index; 842 u8 region; 843 } queue; 844 /* used for count action */ 845 struct { 846 /* share counter ID with other flow rules */ 847 u8 shared; 848 u32 id; /* counter ID */ 849 } count; 850 /* used for mark action */ 851 u32 mark_id; 852 u8 reserve[32]; 853 } act_conf; 854 }; 855 856 VIRTCHNL_CHECK_STRUCT_LEN(36, virtchnl_filter_action); 857 858 #define VIRTCHNL_MAX_NUM_ACTIONS 8 859 860 struct virtchnl_filter_action_set { 861 /* action number must be less then VIRTCHNL_MAX_NUM_ACTIONS */ 862 int count; 863 struct virtchnl_filter_action actions[VIRTCHNL_MAX_NUM_ACTIONS]; 864 }; 865 866 VIRTCHNL_CHECK_STRUCT_LEN(292, virtchnl_filter_action_set); 867 868 /* pattern and action for FDIR rule */ 869 struct virtchnl_fdir_rule { 870 struct virtchnl_proto_hdrs proto_hdrs; 871 struct virtchnl_filter_action_set action_set; 872 }; 873 874 VIRTCHNL_CHECK_STRUCT_LEN(2604, virtchnl_fdir_rule); 875 876 /* Status returned to VF after VF requests FDIR commands 877 * VIRTCHNL_FDIR_SUCCESS 878 * VF FDIR related request is successfully done by PF 879 * The request can be OP_ADD/DEL. 880 * 881 * VIRTCHNL_FDIR_FAILURE_RULE_NORESOURCE 882 * OP_ADD_FDIR_FILTER request is failed due to no Hardware resource. 883 * 884 * VIRTCHNL_FDIR_FAILURE_RULE_EXIST 885 * OP_ADD_FDIR_FILTER request is failed due to the rule is already existed. 886 * 887 * VIRTCHNL_FDIR_FAILURE_RULE_CONFLICT 888 * OP_ADD_FDIR_FILTER request is failed due to conflict with existing rule. 889 * 890 * VIRTCHNL_FDIR_FAILURE_RULE_NONEXIST 891 * OP_DEL_FDIR_FILTER request is failed due to this rule doesn't exist. 892 * 893 * VIRTCHNL_FDIR_FAILURE_RULE_INVALID 894 * OP_ADD_FDIR_FILTER request is failed due to parameters validation 895 * or HW doesn't support. 896 * 897 * VIRTCHNL_FDIR_FAILURE_RULE_TIMEOUT 898 * OP_ADD/DEL_FDIR_FILTER request is failed due to timing out 899 * for programming. 900 */ 901 enum virtchnl_fdir_prgm_status { 902 VIRTCHNL_FDIR_SUCCESS = 0, 903 VIRTCHNL_FDIR_FAILURE_RULE_NORESOURCE, 904 VIRTCHNL_FDIR_FAILURE_RULE_EXIST, 905 VIRTCHNL_FDIR_FAILURE_RULE_CONFLICT, 906 VIRTCHNL_FDIR_FAILURE_RULE_NONEXIST, 907 VIRTCHNL_FDIR_FAILURE_RULE_INVALID, 908 VIRTCHNL_FDIR_FAILURE_RULE_TIMEOUT, 909 }; 910 911 /* VIRTCHNL_OP_ADD_FDIR_FILTER 912 * VF sends this request to PF by filling out vsi_id, 913 * validate_only and rule_cfg. PF will return flow_id 914 * if the request is successfully done and return add_status to VF. 915 */ 916 struct virtchnl_fdir_add { 917 u16 vsi_id; /* INPUT */ 918 /* 919 * 1 for validating a fdir rule, 0 for creating a fdir rule. 920 * Validate and create share one ops: VIRTCHNL_OP_ADD_FDIR_FILTER. 921 */ 922 u16 validate_only; /* INPUT */ 923 u32 flow_id; /* OUTPUT */ 924 struct virtchnl_fdir_rule rule_cfg; /* INPUT */ 925 enum virtchnl_fdir_prgm_status status; /* OUTPUT */ 926 }; 927 928 VIRTCHNL_CHECK_STRUCT_LEN(2616, virtchnl_fdir_add); 929 930 /* VIRTCHNL_OP_DEL_FDIR_FILTER 931 * VF sends this request to PF by filling out vsi_id 932 * and flow_id. PF will return del_status to VF. 933 */ 934 struct virtchnl_fdir_del { 935 u16 vsi_id; /* INPUT */ 936 u16 pad; 937 u32 flow_id; /* INPUT */ 938 enum virtchnl_fdir_prgm_status status; /* OUTPUT */ 939 }; 940 941 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_fdir_del); 942 943 /** 944 * virtchnl_vc_validate_vf_msg 945 * @ver: Virtchnl version info 946 * @v_opcode: Opcode for the message 947 * @msg: pointer to the msg buffer 948 * @msglen: msg length 949 * 950 * validate msg format against struct for each opcode 951 */ 952 static inline int 953 virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode, 954 u8 *msg, u16 msglen) 955 { 956 bool err_msg_format = false; 957 int valid_len = 0; 958 959 /* Validate message length. */ 960 switch (v_opcode) { 961 case VIRTCHNL_OP_VERSION: 962 valid_len = sizeof(struct virtchnl_version_info); 963 break; 964 case VIRTCHNL_OP_RESET_VF: 965 break; 966 case VIRTCHNL_OP_GET_VF_RESOURCES: 967 if (VF_IS_V11(ver)) 968 valid_len = sizeof(u32); 969 break; 970 case VIRTCHNL_OP_CONFIG_TX_QUEUE: 971 valid_len = sizeof(struct virtchnl_txq_info); 972 break; 973 case VIRTCHNL_OP_CONFIG_RX_QUEUE: 974 valid_len = sizeof(struct virtchnl_rxq_info); 975 break; 976 case VIRTCHNL_OP_CONFIG_VSI_QUEUES: 977 valid_len = sizeof(struct virtchnl_vsi_queue_config_info); 978 if (msglen >= valid_len) { 979 struct virtchnl_vsi_queue_config_info *vqc = 980 (struct virtchnl_vsi_queue_config_info *)msg; 981 valid_len += (vqc->num_queue_pairs * 982 sizeof(struct 983 virtchnl_queue_pair_info)); 984 if (vqc->num_queue_pairs == 0) 985 err_msg_format = true; 986 } 987 break; 988 case VIRTCHNL_OP_CONFIG_IRQ_MAP: 989 valid_len = sizeof(struct virtchnl_irq_map_info); 990 if (msglen >= valid_len) { 991 struct virtchnl_irq_map_info *vimi = 992 (struct virtchnl_irq_map_info *)msg; 993 valid_len += (vimi->num_vectors * 994 sizeof(struct virtchnl_vector_map)); 995 if (vimi->num_vectors == 0) 996 err_msg_format = true; 997 } 998 break; 999 case VIRTCHNL_OP_ENABLE_QUEUES: 1000 case VIRTCHNL_OP_DISABLE_QUEUES: 1001 valid_len = sizeof(struct virtchnl_queue_select); 1002 break; 1003 case VIRTCHNL_OP_ADD_ETH_ADDR: 1004 case VIRTCHNL_OP_DEL_ETH_ADDR: 1005 valid_len = sizeof(struct virtchnl_ether_addr_list); 1006 if (msglen >= valid_len) { 1007 struct virtchnl_ether_addr_list *veal = 1008 (struct virtchnl_ether_addr_list *)msg; 1009 valid_len += veal->num_elements * 1010 sizeof(struct virtchnl_ether_addr); 1011 if (veal->num_elements == 0) 1012 err_msg_format = true; 1013 } 1014 break; 1015 case VIRTCHNL_OP_ADD_VLAN: 1016 case VIRTCHNL_OP_DEL_VLAN: 1017 valid_len = sizeof(struct virtchnl_vlan_filter_list); 1018 if (msglen >= valid_len) { 1019 struct virtchnl_vlan_filter_list *vfl = 1020 (struct virtchnl_vlan_filter_list *)msg; 1021 valid_len += vfl->num_elements * sizeof(u16); 1022 if (vfl->num_elements == 0) 1023 err_msg_format = true; 1024 } 1025 break; 1026 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE: 1027 valid_len = sizeof(struct virtchnl_promisc_info); 1028 break; 1029 case VIRTCHNL_OP_GET_STATS: 1030 valid_len = sizeof(struct virtchnl_queue_select); 1031 break; 1032 case VIRTCHNL_OP_IWARP: 1033 /* These messages are opaque to us and will be validated in 1034 * the RDMA client code. We just need to check for nonzero 1035 * length. The firmware will enforce max length restrictions. 1036 */ 1037 if (msglen) 1038 valid_len = msglen; 1039 else 1040 err_msg_format = true; 1041 break; 1042 case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP: 1043 break; 1044 case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP: 1045 valid_len = sizeof(struct virtchnl_iwarp_qvlist_info); 1046 if (msglen >= valid_len) { 1047 struct virtchnl_iwarp_qvlist_info *qv = 1048 (struct virtchnl_iwarp_qvlist_info *)msg; 1049 if (qv->num_vectors == 0) { 1050 err_msg_format = true; 1051 break; 1052 } 1053 valid_len += ((qv->num_vectors - 1) * 1054 sizeof(struct virtchnl_iwarp_qv_info)); 1055 } 1056 break; 1057 case VIRTCHNL_OP_CONFIG_RSS_KEY: 1058 valid_len = sizeof(struct virtchnl_rss_key); 1059 if (msglen >= valid_len) { 1060 struct virtchnl_rss_key *vrk = 1061 (struct virtchnl_rss_key *)msg; 1062 valid_len += vrk->key_len - 1; 1063 } 1064 break; 1065 case VIRTCHNL_OP_CONFIG_RSS_LUT: 1066 valid_len = sizeof(struct virtchnl_rss_lut); 1067 if (msglen >= valid_len) { 1068 struct virtchnl_rss_lut *vrl = 1069 (struct virtchnl_rss_lut *)msg; 1070 valid_len += vrl->lut_entries - 1; 1071 } 1072 break; 1073 case VIRTCHNL_OP_GET_RSS_HENA_CAPS: 1074 break; 1075 case VIRTCHNL_OP_SET_RSS_HENA: 1076 valid_len = sizeof(struct virtchnl_rss_hena); 1077 break; 1078 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING: 1079 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING: 1080 break; 1081 case VIRTCHNL_OP_REQUEST_QUEUES: 1082 valid_len = sizeof(struct virtchnl_vf_res_request); 1083 break; 1084 case VIRTCHNL_OP_ENABLE_CHANNELS: 1085 valid_len = sizeof(struct virtchnl_tc_info); 1086 if (msglen >= valid_len) { 1087 struct virtchnl_tc_info *vti = 1088 (struct virtchnl_tc_info *)msg; 1089 valid_len += (vti->num_tc - 1) * 1090 sizeof(struct virtchnl_channel_info); 1091 if (vti->num_tc == 0) 1092 err_msg_format = true; 1093 } 1094 break; 1095 case VIRTCHNL_OP_DISABLE_CHANNELS: 1096 break; 1097 case VIRTCHNL_OP_ADD_CLOUD_FILTER: 1098 valid_len = sizeof(struct virtchnl_filter); 1099 break; 1100 case VIRTCHNL_OP_DEL_CLOUD_FILTER: 1101 valid_len = sizeof(struct virtchnl_filter); 1102 break; 1103 case VIRTCHNL_OP_ADD_FDIR_FILTER: 1104 valid_len = sizeof(struct virtchnl_fdir_add); 1105 break; 1106 case VIRTCHNL_OP_DEL_FDIR_FILTER: 1107 valid_len = sizeof(struct virtchnl_fdir_del); 1108 break; 1109 /* These are always errors coming from the VF. */ 1110 case VIRTCHNL_OP_EVENT: 1111 case VIRTCHNL_OP_UNKNOWN: 1112 default: 1113 return VIRTCHNL_STATUS_ERR_PARAM; 1114 } 1115 /* few more checks */ 1116 if (err_msg_format || valid_len != msglen) 1117 return VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH; 1118 1119 return 0; 1120 } 1121 #endif /* _VIRTCHNL_H_ */ 1122