1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2001-2020 Intel Corporation
9 * This header file describes the VF-PF communication protocol used
10 * by the drivers for all devices starting from our 40G product line
12 * Admin queue buffer usage:
13 * desc->opcode is always aqc_opc_send_msg_to_pf
14 * flags, retval, datalen, and data addr are all used normally.
15 * The Firmware copies the cookie fields when sending messages between the
16 * PF and VF, but uses all other fields internally. Due to this limitation,
17 * we must send all messages as "indirect", i.e. using an external buffer.
19 * All the VSI indexes are relative to the VF. Each VF can have maximum of
20 * three VSIs. All the queue indexes are relative to the VSI. Each VF can
21 * have a maximum of sixteen queues for all of its VSIs.
23 * The PF is required to return a status code in v_retval for all messages
24 * except RESET_VF, which does not require any response. The return value
25 * is of status_code type, defined in the shared type.h.
27 * In general, VF driver initialization should roughly follow the order of
28 * these opcodes. The VF driver must first validate the API version of the
29 * PF driver, then request a reset, then get resources, then configure
30 * queues and interrupts. After these operations are complete, the VF
31 * driver may start its queues, optionally add MAC and VLAN filters, and
35 /* START GENERIC DEFINES
36 * Need to ensure the following enums and defines hold the same meaning and
37 * value in current and future projects
41 enum virtchnl_status_code {
42 VIRTCHNL_STATUS_SUCCESS = 0,
43 VIRTCHNL_STATUS_ERR_PARAM = -5,
44 VIRTCHNL_STATUS_ERR_NO_MEMORY = -18,
45 VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH = -38,
46 VIRTCHNL_STATUS_ERR_CQP_COMPL_ERROR = -39,
47 VIRTCHNL_STATUS_ERR_INVALID_VF_ID = -40,
48 VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR = -53,
49 VIRTCHNL_STATUS_ERR_NOT_SUPPORTED = -64,
52 /* Backward compatibility */
53 #define VIRTCHNL_ERR_PARAM VIRTCHNL_STATUS_ERR_PARAM
54 #define VIRTCHNL_STATUS_NOT_SUPPORTED VIRTCHNL_STATUS_ERR_NOT_SUPPORTED
56 #define VIRTCHNL_LINK_SPEED_2_5GB_SHIFT 0x0
57 #define VIRTCHNL_LINK_SPEED_100MB_SHIFT 0x1
58 #define VIRTCHNL_LINK_SPEED_1000MB_SHIFT 0x2
59 #define VIRTCHNL_LINK_SPEED_10GB_SHIFT 0x3
60 #define VIRTCHNL_LINK_SPEED_40GB_SHIFT 0x4
61 #define VIRTCHNL_LINK_SPEED_20GB_SHIFT 0x5
62 #define VIRTCHNL_LINK_SPEED_25GB_SHIFT 0x6
63 #define VIRTCHNL_LINK_SPEED_5GB_SHIFT 0x7
65 enum virtchnl_link_speed {
66 VIRTCHNL_LINK_SPEED_UNKNOWN = 0,
67 VIRTCHNL_LINK_SPEED_100MB = BIT(VIRTCHNL_LINK_SPEED_100MB_SHIFT),
68 VIRTCHNL_LINK_SPEED_1GB = BIT(VIRTCHNL_LINK_SPEED_1000MB_SHIFT),
69 VIRTCHNL_LINK_SPEED_10GB = BIT(VIRTCHNL_LINK_SPEED_10GB_SHIFT),
70 VIRTCHNL_LINK_SPEED_40GB = BIT(VIRTCHNL_LINK_SPEED_40GB_SHIFT),
71 VIRTCHNL_LINK_SPEED_20GB = BIT(VIRTCHNL_LINK_SPEED_20GB_SHIFT),
72 VIRTCHNL_LINK_SPEED_25GB = BIT(VIRTCHNL_LINK_SPEED_25GB_SHIFT),
73 VIRTCHNL_LINK_SPEED_2_5GB = BIT(VIRTCHNL_LINK_SPEED_2_5GB_SHIFT),
74 VIRTCHNL_LINK_SPEED_5GB = BIT(VIRTCHNL_LINK_SPEED_5GB_SHIFT),
77 /* for hsplit_0 field of Rx HMC context */
78 /* deprecated with AVF 1.0 */
79 enum virtchnl_rx_hsplit {
80 VIRTCHNL_RX_HSPLIT_NO_SPLIT = 0,
81 VIRTCHNL_RX_HSPLIT_SPLIT_L2 = 1,
82 VIRTCHNL_RX_HSPLIT_SPLIT_IP = 2,
83 VIRTCHNL_RX_HSPLIT_SPLIT_TCP_UDP = 4,
84 VIRTCHNL_RX_HSPLIT_SPLIT_SCTP = 8,
87 #define VIRTCHNL_ETH_LENGTH_OF_ADDRESS 6
88 /* END GENERIC DEFINES */
90 /* Opcodes for VF-PF communication. These are placed in the v_opcode field
91 * of the virtchnl_msg structure.
94 /* The PF sends status change events to VFs using
95 * the VIRTCHNL_OP_EVENT opcode.
96 * VFs send requests to the PF using the other ops.
97 * Use of "advanced opcode" features must be negotiated as part of capabilities
98 * exchange and are not considered part of base mode feature set.
100 VIRTCHNL_OP_UNKNOWN = 0,
101 VIRTCHNL_OP_VERSION = 1, /* must ALWAYS be 1 */
102 VIRTCHNL_OP_RESET_VF = 2,
103 VIRTCHNL_OP_GET_VF_RESOURCES = 3,
104 VIRTCHNL_OP_CONFIG_TX_QUEUE = 4,
105 VIRTCHNL_OP_CONFIG_RX_QUEUE = 5,
106 VIRTCHNL_OP_CONFIG_VSI_QUEUES = 6,
107 VIRTCHNL_OP_CONFIG_IRQ_MAP = 7,
108 VIRTCHNL_OP_ENABLE_QUEUES = 8,
109 VIRTCHNL_OP_DISABLE_QUEUES = 9,
110 VIRTCHNL_OP_ADD_ETH_ADDR = 10,
111 VIRTCHNL_OP_DEL_ETH_ADDR = 11,
112 VIRTCHNL_OP_ADD_VLAN = 12,
113 VIRTCHNL_OP_DEL_VLAN = 13,
114 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE = 14,
115 VIRTCHNL_OP_GET_STATS = 15,
116 VIRTCHNL_OP_RSVD = 16,
117 VIRTCHNL_OP_EVENT = 17, /* must ALWAYS be 17 */
118 #ifdef VIRTCHNL_SOL_VF_SUPPORT
119 VIRTCHNL_OP_GET_ADDNL_SOL_CONFIG = 19,
121 #ifdef VIRTCHNL_IWARP
122 VIRTCHNL_OP_IWARP = 20, /* advanced opcode */
123 VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP = 21, /* advanced opcode */
124 VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP = 22, /* advanced opcode */
126 VIRTCHNL_OP_CONFIG_RSS_KEY = 23,
127 VIRTCHNL_OP_CONFIG_RSS_LUT = 24,
128 VIRTCHNL_OP_GET_RSS_HENA_CAPS = 25,
129 VIRTCHNL_OP_SET_RSS_HENA = 26,
130 VIRTCHNL_OP_ENABLE_VLAN_STRIPPING = 27,
131 VIRTCHNL_OP_DISABLE_VLAN_STRIPPING = 28,
132 VIRTCHNL_OP_REQUEST_QUEUES = 29,
136 /* These macros are used to generate compilation errors if a structure/union
137 * is not exactly the correct length. It gives a divide by zero error if the
138 * structure is not of the correct size, otherwise it creates an enum that is
141 #define VIRTCHNL_CHECK_STRUCT_LEN(n, X) enum virtchnl_static_assert_enum_##X \
142 { virtchnl_static_assert_##X = (n)/((sizeof(struct X) == (n)) ? 1 : 0) }
144 /* Virtual channel message descriptor. This overlays the admin queue
145 * descriptor. All other data is passed in external buffers.
148 struct virtchnl_msg {
149 u8 pad[8]; /* AQ flags/opcode/len/retval fields */
150 enum virtchnl_ops v_opcode; /* avoid confusion with desc->opcode */
151 enum virtchnl_status_code v_retval; /* ditto for desc->retval */
152 u32 vfid; /* used by PF when sending to VF */
155 VIRTCHNL_CHECK_STRUCT_LEN(20, virtchnl_msg);
157 /* Message descriptions and data structures.*/
159 /* VIRTCHNL_OP_VERSION
160 * VF posts its version number to the PF. PF responds with its version number
161 * in the same format, along with a return code.
162 * Reply from PF has its major/minor versions also in param0 and param1.
163 * If there is a major version mismatch, then the VF cannot operate.
164 * If there is a minor version mismatch, then the VF can operate but should
165 * add a warning to the system log.
167 * This enum element MUST always be specified as == 1, regardless of other
168 * changes in the API. The PF must always respond to this message without
169 * error regardless of version mismatch.
171 #define VIRTCHNL_VERSION_MAJOR 1
172 #define VIRTCHNL_VERSION_MINOR 1
173 #define VIRTCHNL_VERSION_MINOR_NO_VF_CAPS 0
175 struct virtchnl_version_info {
180 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_version_info);
182 #define VF_IS_V10(_v) (((_v)->major == 1) && ((_v)->minor == 0))
183 #define VF_IS_V11(_ver) (((_ver)->major == 1) && ((_ver)->minor == 1))
185 /* VIRTCHNL_OP_RESET_VF
186 * VF sends this request to PF with no parameters
187 * PF does NOT respond! VF driver must delay then poll VFGEN_RSTAT register
188 * until reset completion is indicated. The admin queue must be reinitialized
189 * after this operation.
191 * When reset is complete, PF must ensure that all queues in all VSIs associated
192 * with the VF are stopped, all queue configurations in the HMC are set to 0,
193 * and all MAC and VLAN filters (except the default MAC address) on all VSIs
197 /* VSI types that use VIRTCHNL interface for VF-PF communication. VSI_SRIOV
198 * vsi_type should always be 6 for backward compatibility. Add other fields
201 enum virtchnl_vsi_type {
202 VIRTCHNL_VSI_TYPE_INVALID = 0,
203 VIRTCHNL_VSI_SRIOV = 6,
206 /* VIRTCHNL_OP_GET_VF_RESOURCES
207 * Version 1.0 VF sends this request to PF with no parameters
208 * Version 1.1 VF sends this request to PF with u32 bitmap of its capabilities
209 * PF responds with an indirect message containing
210 * virtchnl_vf_resource and one or more
211 * virtchnl_vsi_resource structures.
214 struct virtchnl_vsi_resource {
217 enum virtchnl_vsi_type vsi_type;
219 u8 default_mac_addr[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
222 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);
224 /* VF capability flags
225 * VIRTCHNL_VF_OFFLOAD_L2 flag is inclusive of base mode L2 offloads including
226 * TX/RX Checksum offloading and TSO for non-tunnelled packets.
228 #define VIRTCHNL_VF_OFFLOAD_L2 0x00000001
229 #define VIRTCHNL_VF_OFFLOAD_IWARP 0x00000002
230 #define VIRTCHNL_VF_OFFLOAD_RSVD 0x00000004
231 #define VIRTCHNL_VF_OFFLOAD_RSS_AQ 0x00000008
232 #define VIRTCHNL_VF_OFFLOAD_RSS_REG 0x00000010
233 #define VIRTCHNL_VF_OFFLOAD_WB_ON_ITR 0x00000020
234 #define VIRTCHNL_VF_OFFLOAD_REQ_QUEUES 0x00000040
235 #define VIRTCHNL_VF_OFFLOAD_CRC 0x00000080
236 #define VIRTCHNL_VF_OFFLOAD_VLAN 0x00010000
237 #define VIRTCHNL_VF_OFFLOAD_RX_POLLING 0x00020000
238 #define VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2 0x00040000
239 #define VIRTCHNL_VF_OFFLOAD_RSS_PF 0X00080000
240 #define VIRTCHNL_VF_OFFLOAD_ENCAP 0X00100000
241 #define VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM 0X00200000
242 #define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM 0X00400000
244 #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \
245 VIRTCHNL_VF_OFFLOAD_VLAN | \
246 VIRTCHNL_VF_OFFLOAD_RSS_PF)
248 struct virtchnl_vf_resource {
258 struct virtchnl_vsi_resource vsi_res[1];
261 VIRTCHNL_CHECK_STRUCT_LEN(36, virtchnl_vf_resource);
263 /* VIRTCHNL_OP_CONFIG_TX_QUEUE
264 * VF sends this message to set up parameters for one TX queue.
265 * External data buffer contains one instance of virtchnl_txq_info.
266 * PF configures requested queue and returns a status code.
269 /* Tx queue config info */
270 struct virtchnl_txq_info {
273 u16 ring_len; /* number of descriptors, multiple of 8 */
274 u16 headwb_enabled; /* deprecated with AVF 1.0 */
276 u64 dma_headwb_addr; /* deprecated with AVF 1.0 */
279 VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_txq_info);
281 /* VIRTCHNL_OP_CONFIG_RX_QUEUE
282 * VF sends this message to set up parameters for one RX queue.
283 * External data buffer contains one instance of virtchnl_rxq_info.
284 * PF configures requested queue and returns a status code. The
285 * crc_disable flag disables CRC stripping on the VF. Setting
286 * the crc_disable flag to 1 will disable CRC stripping for each
287 * queue in the VF where the flag is set. The VIRTCHNL_VF_OFFLOAD_CRC
288 * offload must have been set prior to sending this info or the PF
289 * will ignore the request. This flag should be set the same for
290 * all of the queues for a VF.
293 /* Rx queue config info */
294 struct virtchnl_rxq_info {
297 u32 ring_len; /* number of descriptors, multiple of 32 */
299 u16 splithdr_enabled; /* deprecated with AVF 1.0 */
305 enum virtchnl_rx_hsplit rx_split_pos; /* deprecated with AVF 1.0 */
309 VIRTCHNL_CHECK_STRUCT_LEN(40, virtchnl_rxq_info);
311 /* VIRTCHNL_OP_CONFIG_VSI_QUEUES
312 * VF sends this message to set parameters for all active TX and RX queues
313 * associated with the specified VSI.
314 * PF configures queues and returns status.
315 * If the number of queues specified is greater than the number of queues
316 * associated with the VSI, an error is returned and no queues are configured.
318 struct virtchnl_queue_pair_info {
319 /* NOTE: vsi_id and queue_id should be identical for both queues. */
320 struct virtchnl_txq_info txq;
321 struct virtchnl_rxq_info rxq;
324 VIRTCHNL_CHECK_STRUCT_LEN(64, virtchnl_queue_pair_info);
326 struct virtchnl_vsi_queue_config_info {
330 struct virtchnl_queue_pair_info qpair[1];
333 VIRTCHNL_CHECK_STRUCT_LEN(72, virtchnl_vsi_queue_config_info);
335 /* VIRTCHNL_OP_REQUEST_QUEUES
336 * VF sends this message to request the PF to allocate additional queues to
337 * this VF. Each VF gets a guaranteed number of queues on init but asking for
338 * additional queues must be negotiated. This is a best effort request as it
339 * is possible the PF does not have enough queues left to support the request.
340 * If the PF cannot support the number requested it will respond with the
341 * maximum number it is able to support. If the request is successful, PF will
342 * then reset the VF to institute required changes.
345 /* VF resource request */
346 struct virtchnl_vf_res_request {
350 /* VIRTCHNL_OP_CONFIG_IRQ_MAP
351 * VF uses this message to map vectors to queues.
352 * The rxq_map and txq_map fields are bitmaps used to indicate which queues
353 * are to be associated with the specified vector.
354 * The "other" causes are always mapped to vector 0.
355 * PF configures interrupt mapping and returns status.
357 struct virtchnl_vector_map {
366 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_vector_map);
368 struct virtchnl_irq_map_info {
370 struct virtchnl_vector_map vecmap[1];
373 VIRTCHNL_CHECK_STRUCT_LEN(14, virtchnl_irq_map_info);
375 /* VIRTCHNL_OP_ENABLE_QUEUES
376 * VIRTCHNL_OP_DISABLE_QUEUES
377 * VF sends these message to enable or disable TX/RX queue pairs.
378 * The queues fields are bitmaps indicating which queues to act upon.
379 * (Currently, we only support 16 queues per VF, but we make the field
380 * u32 to allow for expansion.)
381 * PF performs requested action and returns status.
383 struct virtchnl_queue_select {
390 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_queue_select);
392 /* VIRTCHNL_OP_ADD_ETH_ADDR
393 * VF sends this message in order to add one or more unicast or multicast
394 * address filters for the specified VSI.
395 * PF adds the filters and returns status.
398 /* VIRTCHNL_OP_DEL_ETH_ADDR
399 * VF sends this message in order to remove one or more unicast or multicast
400 * filters for the specified VSI.
401 * PF removes the filters and returns status.
404 struct virtchnl_ether_addr {
405 u8 addr[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
409 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_ether_addr);
411 struct virtchnl_ether_addr_list {
414 struct virtchnl_ether_addr list[1];
417 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_ether_addr_list);
419 #ifdef VIRTCHNL_SOL_VF_SUPPORT
420 /* VIRTCHNL_OP_GET_ADDNL_SOL_CONFIG
421 * VF sends this message to get the default MTU and list of additional ethernet
422 * addresses it is allowed to use.
423 * PF responds with an indirect message containing
424 * virtchnl_addnl_solaris_config with zero or more
425 * virtchnl_ether_addr structures.
427 * It is expected that this operation will only ever be needed for Solaris VFs
428 * running under a Solaris PF.
430 struct virtchnl_addnl_solaris_config {
432 struct virtchnl_ether_addr_list al;
436 /* VIRTCHNL_OP_ADD_VLAN
437 * VF sends this message to add one or more VLAN tag filters for receives.
438 * PF adds the filters and returns status.
439 * If a port VLAN is configured by the PF, this operation will return an
443 /* VIRTCHNL_OP_DEL_VLAN
444 * VF sends this message to remove one or more VLAN tag filters for receives.
445 * PF removes the filters and returns status.
446 * If a port VLAN is configured by the PF, this operation will return an
450 struct virtchnl_vlan_filter_list {
456 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_vlan_filter_list);
458 /* VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE
459 * VF sends VSI id and flags.
460 * PF returns status code in retval.
461 * Note: we assume that broadcast accept mode is always enabled.
463 struct virtchnl_promisc_info {
468 VIRTCHNL_CHECK_STRUCT_LEN(4, virtchnl_promisc_info);
470 #define FLAG_VF_UNICAST_PROMISC 0x00000001
471 #define FLAG_VF_MULTICAST_PROMISC 0x00000002
473 /* VIRTCHNL_OP_GET_STATS
474 * VF sends this message to request stats for the selected VSI. VF uses
475 * the virtchnl_queue_select struct to specify the VSI. The queue_id
476 * field is ignored by the PF.
478 * PF replies with struct eth_stats in an external buffer.
481 /* VIRTCHNL_OP_CONFIG_RSS_KEY
482 * VIRTCHNL_OP_CONFIG_RSS_LUT
483 * VF sends these messages to configure RSS. Only supported if both PF
484 * and VF drivers set the VIRTCHNL_VF_OFFLOAD_RSS_PF bit during
485 * configuration negotiation. If this is the case, then the RSS fields in
486 * the VF resource struct are valid.
487 * Both the key and LUT are initialized to 0 by the PF, meaning that
488 * RSS is effectively disabled until set up by the VF.
490 struct virtchnl_rss_key {
493 u8 key[1]; /* RSS hash key, packed bytes */
496 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_key);
498 struct virtchnl_rss_lut {
501 u8 lut[1]; /* RSS lookup table */
504 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_lut);
506 /* VIRTCHNL_OP_GET_RSS_HENA_CAPS
507 * VIRTCHNL_OP_SET_RSS_HENA
508 * VF sends these messages to get and set the hash filter enable bits for RSS.
509 * By default, the PF sets these to all possible traffic types that the
510 * hardware supports. The VF can query this value if it wants to change the
511 * traffic types that are hashed by the hardware.
513 struct virtchnl_rss_hena {
517 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_rss_hena);
520 * PF sends this message to inform the VF driver of events that may affect it.
521 * No direct response is expected from the VF, though it may generate other
522 * messages in response to this one.
524 enum virtchnl_event_codes {
525 VIRTCHNL_EVENT_UNKNOWN = 0,
526 VIRTCHNL_EVENT_LINK_CHANGE,
527 VIRTCHNL_EVENT_RESET_IMPENDING,
528 VIRTCHNL_EVENT_PF_DRIVER_CLOSE,
531 #define PF_EVENT_SEVERITY_INFO 0
532 #define PF_EVENT_SEVERITY_ATTENTION 1
533 #define PF_EVENT_SEVERITY_ACTION_REQUIRED 2
534 #define PF_EVENT_SEVERITY_CERTAIN_DOOM 255
536 struct virtchnl_pf_event {
537 enum virtchnl_event_codes event;
540 enum virtchnl_link_speed link_speed;
548 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_pf_event);
550 #ifdef VIRTCHNL_IWARP
552 /* VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP
553 * VF uses this message to request PF to map IWARP vectors to IWARP queues.
554 * The request for this originates from the VF IWARP driver through
555 * a client interface between VF LAN and VF IWARP driver.
556 * A vector could have an AEQ and CEQ attached to it although
557 * there is a single AEQ per VF IWARP instance in which case
558 * most vectors will have an INVALID_IDX for aeq and valid idx for ceq.
559 * There will never be a case where there will be multiple CEQs attached
560 * to a single vector.
561 * PF configures interrupt mapping and returns status.
564 /* HW does not define a type value for AEQ; only for RX/TX and CEQ.
565 * In order for us to keep the interface simple, SW will define a
566 * unique type value for AEQ.
568 #define QUEUE_TYPE_PE_AEQ 0x80
569 #define QUEUE_INVALID_IDX 0xFFFF
571 struct virtchnl_iwarp_qv_info {
572 u32 v_idx; /* msix_vector */
578 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_iwarp_qv_info);
580 struct virtchnl_iwarp_qvlist_info {
582 struct virtchnl_iwarp_qv_info qv_info[1];
585 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_iwarp_qvlist_info);
589 /* VF reset states - these are written into the RSTAT register:
590 * VFGEN_RSTAT on the VF
591 * When the PF initiates a reset, it writes 0
592 * When the reset is complete, it writes 1
593 * When the PF detects that the VF has recovered, it writes 2
594 * VF checks this register periodically to determine if a reset has occurred,
595 * then polls it to know when the reset is complete.
596 * If either the PF or VF reads the register while the hardware
597 * is in a reset state, it will return DEADBEEF, which, when masked
600 enum virtchnl_vfr_states {
601 VIRTCHNL_VFR_INPROGRESS = 0,
602 VIRTCHNL_VFR_COMPLETED,
603 VIRTCHNL_VFR_VFACTIVE,
607 * virtchnl_vc_validate_vf_msg
608 * @ver: Virtchnl version info
609 * @v_opcode: Opcode for the message
610 * @msg: pointer to the msg buffer
611 * @msglen: msg length
613 * validate msg format against struct for each opcode
616 virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode,
619 bool err_msg_format = false;
622 /* Validate message length. */
624 case VIRTCHNL_OP_VERSION:
625 valid_len = sizeof(struct virtchnl_version_info);
627 case VIRTCHNL_OP_RESET_VF:
629 case VIRTCHNL_OP_GET_VF_RESOURCES:
631 valid_len = sizeof(u32);
633 case VIRTCHNL_OP_CONFIG_TX_QUEUE:
634 valid_len = sizeof(struct virtchnl_txq_info);
636 case VIRTCHNL_OP_CONFIG_RX_QUEUE:
637 valid_len = sizeof(struct virtchnl_rxq_info);
639 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
640 valid_len = sizeof(struct virtchnl_vsi_queue_config_info);
641 if (msglen >= valid_len) {
642 struct virtchnl_vsi_queue_config_info *vqc =
643 (struct virtchnl_vsi_queue_config_info *)msg;
644 valid_len += (vqc->num_queue_pairs *
646 virtchnl_queue_pair_info));
647 if (vqc->num_queue_pairs == 0)
648 err_msg_format = true;
651 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
652 valid_len = sizeof(struct virtchnl_irq_map_info);
653 if (msglen >= valid_len) {
654 struct virtchnl_irq_map_info *vimi =
655 (struct virtchnl_irq_map_info *)msg;
656 valid_len += (vimi->num_vectors *
657 sizeof(struct virtchnl_vector_map));
658 if (vimi->num_vectors == 0)
659 err_msg_format = true;
662 case VIRTCHNL_OP_ENABLE_QUEUES:
663 case VIRTCHNL_OP_DISABLE_QUEUES:
664 valid_len = sizeof(struct virtchnl_queue_select);
666 case VIRTCHNL_OP_ADD_ETH_ADDR:
667 case VIRTCHNL_OP_DEL_ETH_ADDR:
668 valid_len = sizeof(struct virtchnl_ether_addr_list);
669 if (msglen >= valid_len) {
670 struct virtchnl_ether_addr_list *veal =
671 (struct virtchnl_ether_addr_list *)msg;
672 valid_len += veal->num_elements *
673 sizeof(struct virtchnl_ether_addr);
674 if (veal->num_elements == 0)
675 err_msg_format = true;
678 case VIRTCHNL_OP_ADD_VLAN:
679 case VIRTCHNL_OP_DEL_VLAN:
680 valid_len = sizeof(struct virtchnl_vlan_filter_list);
681 if (msglen >= valid_len) {
682 struct virtchnl_vlan_filter_list *vfl =
683 (struct virtchnl_vlan_filter_list *)msg;
684 valid_len += vfl->num_elements * sizeof(u16);
685 if (vfl->num_elements == 0)
686 err_msg_format = true;
689 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
690 valid_len = sizeof(struct virtchnl_promisc_info);
692 case VIRTCHNL_OP_GET_STATS:
693 valid_len = sizeof(struct virtchnl_queue_select);
695 #ifdef VIRTCHNL_IWARP
696 case VIRTCHNL_OP_IWARP:
697 /* These messages are opaque to us and will be validated in
698 * the RDMA client code. We just need to check for nonzero
699 * length. The firmware will enforce max length restrictions.
704 err_msg_format = true;
706 case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
708 case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
709 valid_len = sizeof(struct virtchnl_iwarp_qvlist_info);
710 if (msglen >= valid_len) {
711 struct virtchnl_iwarp_qvlist_info *qv =
712 (struct virtchnl_iwarp_qvlist_info *)msg;
713 if (qv->num_vectors == 0) {
714 err_msg_format = true;
717 valid_len += ((qv->num_vectors - 1) *
718 sizeof(struct virtchnl_iwarp_qv_info));
722 case VIRTCHNL_OP_CONFIG_RSS_KEY:
723 valid_len = sizeof(struct virtchnl_rss_key);
724 if (msglen >= valid_len) {
725 struct virtchnl_rss_key *vrk =
726 (struct virtchnl_rss_key *)msg;
727 valid_len += vrk->key_len - 1;
730 case VIRTCHNL_OP_CONFIG_RSS_LUT:
731 valid_len = sizeof(struct virtchnl_rss_lut);
732 if (msglen >= valid_len) {
733 struct virtchnl_rss_lut *vrl =
734 (struct virtchnl_rss_lut *)msg;
735 valid_len += vrl->lut_entries - 1;
738 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
740 case VIRTCHNL_OP_SET_RSS_HENA:
741 valid_len = sizeof(struct virtchnl_rss_hena);
743 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
744 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
746 case VIRTCHNL_OP_REQUEST_QUEUES:
747 valid_len = sizeof(struct virtchnl_vf_res_request);
749 /* These are always errors coming from the VF. */
750 case VIRTCHNL_OP_EVENT:
751 case VIRTCHNL_OP_UNKNOWN:
753 return VIRTCHNL_STATUS_ERR_PARAM;
755 /* few more checks */
756 if (err_msg_format || valid_len != msglen)
757 return VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH;
761 #endif /* _VIRTCHNL_H_ */