1 /******************************************************************************
3 Copyright (c) 2013-2018, Intel Corporation
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32 ******************************************************************************/
39 * This header file describes the VF-PF communication protocol used
40 * by the drivers for all devices starting from our 40G product line
42 * Admin queue buffer usage:
43 * desc->opcode is always aqc_opc_send_msg_to_pf
44 * flags, retval, datalen, and data addr are all used normally.
45 * The Firmware copies the cookie fields when sending messages between the
46 * PF and VF, but uses all other fields internally. Due to this limitation,
47 * we must send all messages as "indirect", i.e. using an external buffer.
49 * All the VSI indexes are relative to the VF. Each VF can have maximum of
50 * three VSIs. All the queue indexes are relative to the VSI. Each VF can
51 * have a maximum of sixteen queues for all of its VSIs.
53 * The PF is required to return a status code in v_retval for all messages
54 * except RESET_VF, which does not require any response. The return value
55 * is of status_code type, defined in the shared type.h.
57 * In general, VF driver initialization should roughly follow the order of
58 * these opcodes. The VF driver must first validate the API version of the
59 * PF driver, then request a reset, then get resources, then configure
60 * queues and interrupts. After these operations are complete, the VF
61 * driver may start its queues, optionally add MAC and VLAN filters, and
65 /* START GENERIC DEFINES
66 * Need to ensure the following enums and defines hold the same meaning and
67 * value in current and future projects
71 enum virtchnl_status_code {
72 VIRTCHNL_STATUS_SUCCESS = 0,
73 VIRTCHNL_ERR_PARAM = -5,
74 VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH = -38,
75 VIRTCHNL_STATUS_ERR_CQP_COMPL_ERROR = -39,
76 VIRTCHNL_STATUS_ERR_INVALID_VF_ID = -40,
77 VIRTCHNL_STATUS_NOT_SUPPORTED = -64,
80 #define VIRTCHNL_LINK_SPEED_100MB_SHIFT 0x1
81 #define VIRTCHNL_LINK_SPEED_1000MB_SHIFT 0x2
82 #define VIRTCHNL_LINK_SPEED_10GB_SHIFT 0x3
83 #define VIRTCHNL_LINK_SPEED_40GB_SHIFT 0x4
84 #define VIRTCHNL_LINK_SPEED_20GB_SHIFT 0x5
85 #define VIRTCHNL_LINK_SPEED_25GB_SHIFT 0x6
87 enum virtchnl_link_speed {
88 VIRTCHNL_LINK_SPEED_UNKNOWN = 0,
89 VIRTCHNL_LINK_SPEED_100MB = BIT(VIRTCHNL_LINK_SPEED_100MB_SHIFT),
90 VIRTCHNL_LINK_SPEED_1GB = BIT(VIRTCHNL_LINK_SPEED_1000MB_SHIFT),
91 VIRTCHNL_LINK_SPEED_10GB = BIT(VIRTCHNL_LINK_SPEED_10GB_SHIFT),
92 VIRTCHNL_LINK_SPEED_40GB = BIT(VIRTCHNL_LINK_SPEED_40GB_SHIFT),
93 VIRTCHNL_LINK_SPEED_20GB = BIT(VIRTCHNL_LINK_SPEED_20GB_SHIFT),
94 VIRTCHNL_LINK_SPEED_25GB = BIT(VIRTCHNL_LINK_SPEED_25GB_SHIFT),
97 /* for hsplit_0 field of Rx HMC context */
98 /* deprecated with AVF 1.0 */
99 enum virtchnl_rx_hsplit {
100 VIRTCHNL_RX_HSPLIT_NO_SPLIT = 0,
101 VIRTCHNL_RX_HSPLIT_SPLIT_L2 = 1,
102 VIRTCHNL_RX_HSPLIT_SPLIT_IP = 2,
103 VIRTCHNL_RX_HSPLIT_SPLIT_TCP_UDP = 4,
104 VIRTCHNL_RX_HSPLIT_SPLIT_SCTP = 8,
107 #define VIRTCHNL_ETH_LENGTH_OF_ADDRESS 6
108 /* END GENERIC DEFINES */
110 /* Opcodes for VF-PF communication. These are placed in the v_opcode field
111 * of the virtchnl_msg structure.
114 /* The PF sends status change events to VFs using
115 * the VIRTCHNL_OP_EVENT opcode.
116 * VFs send requests to the PF using the other ops.
117 * Use of "advanced opcode" features must be negotiated as part of capabilities
118 * exchange and are not considered part of base mode feature set.
120 VIRTCHNL_OP_UNKNOWN = 0,
121 VIRTCHNL_OP_VERSION = 1, /* must ALWAYS be 1 */
122 VIRTCHNL_OP_RESET_VF = 2,
123 VIRTCHNL_OP_GET_VF_RESOURCES = 3,
124 VIRTCHNL_OP_CONFIG_TX_QUEUE = 4,
125 VIRTCHNL_OP_CONFIG_RX_QUEUE = 5,
126 VIRTCHNL_OP_CONFIG_VSI_QUEUES = 6,
127 VIRTCHNL_OP_CONFIG_IRQ_MAP = 7,
128 VIRTCHNL_OP_ENABLE_QUEUES = 8,
129 VIRTCHNL_OP_DISABLE_QUEUES = 9,
130 VIRTCHNL_OP_ADD_ETH_ADDR = 10,
131 VIRTCHNL_OP_DEL_ETH_ADDR = 11,
132 VIRTCHNL_OP_ADD_VLAN = 12,
133 VIRTCHNL_OP_DEL_VLAN = 13,
134 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE = 14,
135 VIRTCHNL_OP_GET_STATS = 15,
136 VIRTCHNL_OP_RSVD = 16,
137 VIRTCHNL_OP_EVENT = 17, /* must ALWAYS be 17 */
138 VIRTCHNL_OP_IWARP = 20, /* advanced opcode */
139 VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP = 21, /* advanced opcode */
140 VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP = 22, /* advanced opcode */
141 VIRTCHNL_OP_CONFIG_RSS_KEY = 23,
142 VIRTCHNL_OP_CONFIG_RSS_LUT = 24,
143 VIRTCHNL_OP_GET_RSS_HENA_CAPS = 25,
144 VIRTCHNL_OP_SET_RSS_HENA = 26,
145 VIRTCHNL_OP_ENABLE_VLAN_STRIPPING = 27,
146 VIRTCHNL_OP_DISABLE_VLAN_STRIPPING = 28,
147 VIRTCHNL_OP_REQUEST_QUEUES = 29,
151 /* This macro is used to generate a compilation error if a structure
152 * is not exactly the correct length. It gives a divide by zero error if the
153 * structure is not of the correct size, otherwise it creates an enum that is
156 #define VIRTCHNL_CHECK_STRUCT_LEN(n, X) enum virtchnl_static_assert_enum_##X \
157 {virtchnl_static_assert_##X = (n) / ((sizeof(struct X) == (n)) ? 1 : 0)}
159 /* Virtual channel message descriptor. This overlays the admin queue
160 * descriptor. All other data is passed in external buffers.
163 struct virtchnl_msg {
164 u8 pad[8]; /* AQ flags/opcode/len/retval fields */
165 enum virtchnl_ops v_opcode; /* avoid confusion with desc->opcode */
166 enum virtchnl_status_code v_retval; /* ditto for desc->retval */
167 u32 vfid; /* used by PF when sending to VF */
170 VIRTCHNL_CHECK_STRUCT_LEN(20, virtchnl_msg);
172 /* Message descriptions and data structures.*/
174 /* VIRTCHNL_OP_VERSION
175 * VF posts its version number to the PF. PF responds with its version number
176 * in the same format, along with a return code.
177 * Reply from PF has its major/minor versions also in param0 and param1.
178 * If there is a major version mismatch, then the VF cannot operate.
179 * If there is a minor version mismatch, then the VF can operate but should
180 * add a warning to the system log.
182 * This enum element MUST always be specified as == 1, regardless of other
183 * changes in the API. The PF must always respond to this message without
184 * error regardless of version mismatch.
186 #define VIRTCHNL_VERSION_MAJOR 1
187 #define VIRTCHNL_VERSION_MINOR 1
188 #define VIRTCHNL_VERSION_MINOR_NO_VF_CAPS 0
190 struct virtchnl_version_info {
195 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_version_info);
197 #define VF_IS_V10(_v) (((_v)->major == 1) && ((_v)->minor == 0))
198 #define VF_IS_V11(_ver) (((_ver)->major == 1) && ((_ver)->minor == 1))
200 /* VIRTCHNL_OP_RESET_VF
201 * VF sends this request to PF with no parameters
202 * PF does NOT respond! VF driver must delay then poll VFGEN_RSTAT register
203 * until reset completion is indicated. The admin queue must be reinitialized
204 * after this operation.
206 * When reset is complete, PF must ensure that all queues in all VSIs associated
207 * with the VF are stopped, all queue configurations in the HMC are set to 0,
208 * and all MAC and VLAN filters (except the default MAC address) on all VSIs
212 /* VSI types that use VIRTCHNL interface for VF-PF communication. VSI_SRIOV
213 * vsi_type should always be 6 for backward compatibility. Add other fields
216 enum virtchnl_vsi_type {
217 VIRTCHNL_VSI_TYPE_INVALID = 0,
218 VIRTCHNL_VSI_SRIOV = 6,
221 /* VIRTCHNL_OP_GET_VF_RESOURCES
222 * Version 1.0 VF sends this request to PF with no parameters
223 * Version 1.1 VF sends this request to PF with u32 bitmap of its capabilities
224 * PF responds with an indirect message containing
225 * virtchnl_vf_resource and one or more
226 * virtchnl_vsi_resource structures.
229 struct virtchnl_vsi_resource {
232 enum virtchnl_vsi_type vsi_type;
234 u8 default_mac_addr[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
237 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);
239 /* VF capability flags
240 * VIRTCHNL_VF_OFFLOAD_L2 flag is inclusive of base mode L2 offloads including
241 * TX/RX Checksum offloading and TSO for non-tunnelled packets.
243 #define VIRTCHNL_VF_OFFLOAD_L2 0x00000001
244 #define VIRTCHNL_VF_OFFLOAD_IWARP 0x00000002
245 #define VIRTCHNL_VF_OFFLOAD_RSVD 0x00000004
246 #define VIRTCHNL_VF_OFFLOAD_RSS_AQ 0x00000008
247 #define VIRTCHNL_VF_OFFLOAD_RSS_REG 0x00000010
248 #define VIRTCHNL_VF_OFFLOAD_WB_ON_ITR 0x00000020
249 #define VIRTCHNL_VF_OFFLOAD_REQ_QUEUES 0x00000040
250 #define VIRTCHNL_VF_OFFLOAD_VLAN 0x00010000
251 #define VIRTCHNL_VF_OFFLOAD_RX_POLLING 0x00020000
252 #define VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2 0x00040000
253 #define VIRTCHNL_VF_OFFLOAD_RSS_PF 0X00080000
254 #define VIRTCHNL_VF_OFFLOAD_ENCAP 0X00100000
255 #define VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM 0X00200000
256 #define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM 0X00400000
258 #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \
259 VIRTCHNL_VF_OFFLOAD_VLAN | \
260 VIRTCHNL_VF_OFFLOAD_RSS_PF)
262 struct virtchnl_vf_resource {
272 struct virtchnl_vsi_resource vsi_res[1];
275 VIRTCHNL_CHECK_STRUCT_LEN(36, virtchnl_vf_resource);
277 /* VIRTCHNL_OP_CONFIG_TX_QUEUE
278 * VF sends this message to set up parameters for one TX queue.
279 * External data buffer contains one instance of virtchnl_txq_info.
280 * PF configures requested queue and returns a status code.
283 /* Tx queue config info */
284 struct virtchnl_txq_info {
287 u16 ring_len; /* number of descriptors, multiple of 8 */
288 u16 headwb_enabled; /* deprecated with AVF 1.0 */
290 u64 dma_headwb_addr; /* deprecated with AVF 1.0 */
293 VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_txq_info);
295 /* VIRTCHNL_OP_CONFIG_RX_QUEUE
296 * VF sends this message to set up parameters for one RX queue.
297 * External data buffer contains one instance of virtchnl_rxq_info.
298 * PF configures requested queue and returns a status code.
301 /* Rx queue config info */
302 struct virtchnl_rxq_info {
305 u32 ring_len; /* number of descriptors, multiple of 32 */
307 u16 splithdr_enabled; /* deprecated with AVF 1.0 */
312 enum virtchnl_rx_hsplit rx_split_pos; /* deprecated with AVF 1.0 */
316 VIRTCHNL_CHECK_STRUCT_LEN(40, virtchnl_rxq_info);
318 /* VIRTCHNL_OP_CONFIG_VSI_QUEUES
319 * VF sends this message to set parameters for all active TX and RX queues
320 * associated with the specified VSI.
321 * PF configures queues and returns status.
322 * If the number of queues specified is greater than the number of queues
323 * associated with the VSI, an error is returned and no queues are configured.
325 struct virtchnl_queue_pair_info {
326 /* NOTE: vsi_id and queue_id should be identical for both queues. */
327 struct virtchnl_txq_info txq;
328 struct virtchnl_rxq_info rxq;
331 VIRTCHNL_CHECK_STRUCT_LEN(64, virtchnl_queue_pair_info);
333 struct virtchnl_vsi_queue_config_info {
337 struct virtchnl_queue_pair_info qpair[1];
340 VIRTCHNL_CHECK_STRUCT_LEN(72, virtchnl_vsi_queue_config_info);
342 /* VIRTCHNL_OP_REQUEST_QUEUES
343 * VF sends this message to request the PF to allocate additional queues to
344 * this VF. Each VF gets a guaranteed number of queues on init but asking for
345 * additional queues must be negotiated. This is a best effort request as it
346 * is possible the PF does not have enough queues left to support the request.
347 * If the PF cannot support the number requested it will respond with the
348 * maximum number it is able to support; otherwise it will respond with the
352 /* VF resource request */
353 struct virtchnl_vf_res_request {
357 /* VIRTCHNL_OP_CONFIG_IRQ_MAP
358 * VF uses this message to map vectors to queues.
359 * The rxq_map and txq_map fields are bitmaps used to indicate which queues
360 * are to be associated with the specified vector.
361 * The "other" causes are always mapped to vector 0.
362 * PF configures interrupt mapping and returns status.
364 struct virtchnl_vector_map {
373 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_vector_map);
375 struct virtchnl_irq_map_info {
377 struct virtchnl_vector_map vecmap[1];
380 VIRTCHNL_CHECK_STRUCT_LEN(14, virtchnl_irq_map_info);
382 /* VIRTCHNL_OP_ENABLE_QUEUES
383 * VIRTCHNL_OP_DISABLE_QUEUES
384 * VF sends these message to enable or disable TX/RX queue pairs.
385 * The queues fields are bitmaps indicating which queues to act upon.
386 * (Currently, we only support 16 queues per VF, but we make the field
387 * u32 to allow for expansion.)
388 * PF performs requested action and returns status.
390 struct virtchnl_queue_select {
397 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_queue_select);
399 /* VIRTCHNL_OP_ADD_ETH_ADDR
400 * VF sends this message in order to add one or more unicast or multicast
401 * address filters for the specified VSI.
402 * PF adds the filters and returns status.
405 /* VIRTCHNL_OP_DEL_ETH_ADDR
406 * VF sends this message in order to remove one or more unicast or multicast
407 * filters for the specified VSI.
408 * PF removes the filters and returns status.
411 struct virtchnl_ether_addr {
412 u8 addr[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
416 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_ether_addr);
418 struct virtchnl_ether_addr_list {
421 struct virtchnl_ether_addr list[1];
424 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_ether_addr_list);
426 /* VIRTCHNL_OP_ADD_VLAN
427 * VF sends this message to add one or more VLAN tag filters for receives.
428 * PF adds the filters and returns status.
429 * If a port VLAN is configured by the PF, this operation will return an
433 /* VIRTCHNL_OP_DEL_VLAN
434 * VF sends this message to remove one or more VLAN tag filters for receives.
435 * PF removes the filters and returns status.
436 * If a port VLAN is configured by the PF, this operation will return an
440 struct virtchnl_vlan_filter_list {
446 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_vlan_filter_list);
448 /* VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE
449 * VF sends VSI id and flags.
450 * PF returns status code in retval.
451 * Note: we assume that broadcast accept mode is always enabled.
453 struct virtchnl_promisc_info {
458 VIRTCHNL_CHECK_STRUCT_LEN(4, virtchnl_promisc_info);
460 #define FLAG_VF_UNICAST_PROMISC 0x00000001
461 #define FLAG_VF_MULTICAST_PROMISC 0x00000002
463 /* VIRTCHNL_OP_GET_STATS
464 * VF sends this message to request stats for the selected VSI. VF uses
465 * the virtchnl_queue_select struct to specify the VSI. The queue_id
466 * field is ignored by the PF.
468 * PF replies with struct eth_stats in an external buffer.
471 /* VIRTCHNL_OP_CONFIG_RSS_KEY
472 * VIRTCHNL_OP_CONFIG_RSS_LUT
473 * VF sends these messages to configure RSS. Only supported if both PF
474 * and VF drivers set the VIRTCHNL_VF_OFFLOAD_RSS_PF bit during
475 * configuration negotiation. If this is the case, then the RSS fields in
476 * the VF resource struct are valid.
477 * Both the key and LUT are initialized to 0 by the PF, meaning that
478 * RSS is effectively disabled until set up by the VF.
480 struct virtchnl_rss_key {
483 u8 key[1]; /* RSS hash key, packed bytes */
486 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_key);
488 struct virtchnl_rss_lut {
491 u8 lut[1]; /* RSS lookup table */
494 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_lut);
496 /* VIRTCHNL_OP_GET_RSS_HENA_CAPS
497 * VIRTCHNL_OP_SET_RSS_HENA
498 * VF sends these messages to get and set the hash filter enable bits for RSS.
499 * By default, the PF sets these to all possible traffic types that the
500 * hardware supports. The VF can query this value if it wants to change the
501 * traffic types that are hashed by the hardware.
503 struct virtchnl_rss_hena {
507 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_rss_hena);
510 * PF sends this message to inform the VF driver of events that may affect it.
511 * No direct response is expected from the VF, though it may generate other
512 * messages in response to this one.
514 enum virtchnl_event_codes {
515 VIRTCHNL_EVENT_UNKNOWN = 0,
516 VIRTCHNL_EVENT_LINK_CHANGE,
517 VIRTCHNL_EVENT_RESET_IMPENDING,
518 VIRTCHNL_EVENT_PF_DRIVER_CLOSE,
521 #define PF_EVENT_SEVERITY_INFO 0
522 #define PF_EVENT_SEVERITY_ATTENTION 1
523 #define PF_EVENT_SEVERITY_ACTION_REQUIRED 2
524 #define PF_EVENT_SEVERITY_CERTAIN_DOOM 255
526 struct virtchnl_pf_event {
527 enum virtchnl_event_codes event;
530 enum virtchnl_link_speed link_speed;
538 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_pf_event);
541 /* VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP
542 * VF uses this message to request PF to map IWARP vectors to IWARP queues.
543 * The request for this originates from the VF IWARP driver through
544 * a client interface between VF LAN and VF IWARP driver.
545 * A vector could have an AEQ and CEQ attached to it although
546 * there is a single AEQ per VF IWARP instance in which case
547 * most vectors will have an INVALID_IDX for aeq and valid idx for ceq.
548 * There will never be a case where there will be multiple CEQs attached
549 * to a single vector.
550 * PF configures interrupt mapping and returns status.
553 /* HW does not define a type value for AEQ; only for RX/TX and CEQ.
554 * In order for us to keep the interface simple, SW will define a
555 * unique type value for AEQ.
557 #define QUEUE_TYPE_PE_AEQ 0x80
558 #define QUEUE_INVALID_IDX 0xFFFF
560 struct virtchnl_iwarp_qv_info {
561 u32 v_idx; /* msix_vector */
567 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_iwarp_qv_info);
569 struct virtchnl_iwarp_qvlist_info {
571 struct virtchnl_iwarp_qv_info qv_info[1];
574 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_iwarp_qvlist_info);
577 /* VF reset states - these are written into the RSTAT register:
578 * VFGEN_RSTAT on the VF
579 * When the PF initiates a reset, it writes 0
580 * When the reset is complete, it writes 1
581 * When the PF detects that the VF has recovered, it writes 2
582 * VF checks this register periodically to determine if a reset has occurred,
583 * then polls it to know when the reset is complete.
584 * If either the PF or VF reads the register while the hardware
585 * is in a reset state, it will return DEADBEEF, which, when masked
588 enum virtchnl_vfr_states {
589 VIRTCHNL_VFR_INPROGRESS = 0,
590 VIRTCHNL_VFR_COMPLETED,
591 VIRTCHNL_VFR_VFACTIVE,
595 * virtchnl_vc_validate_vf_msg
596 * @ver: Virtchnl version info
597 * @v_opcode: Opcode for the message
598 * @msg: pointer to the msg buffer
599 * @msglen: msg length
601 * validate msg format against struct for each opcode
604 virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode,
607 bool err_msg_format = FALSE;
610 /* Validate message length. */
612 case VIRTCHNL_OP_VERSION:
613 valid_len = sizeof(struct virtchnl_version_info);
615 case VIRTCHNL_OP_RESET_VF:
617 case VIRTCHNL_OP_GET_VF_RESOURCES:
619 valid_len = sizeof(u32);
621 case VIRTCHNL_OP_CONFIG_TX_QUEUE:
622 valid_len = sizeof(struct virtchnl_txq_info);
624 case VIRTCHNL_OP_CONFIG_RX_QUEUE:
625 valid_len = sizeof(struct virtchnl_rxq_info);
627 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
628 valid_len = sizeof(struct virtchnl_vsi_queue_config_info);
629 if (msglen >= valid_len) {
630 struct virtchnl_vsi_queue_config_info *vqc =
631 (struct virtchnl_vsi_queue_config_info *)msg;
632 valid_len += (vqc->num_queue_pairs *
634 virtchnl_queue_pair_info));
635 if (vqc->num_queue_pairs == 0)
636 err_msg_format = TRUE;
639 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
640 valid_len = sizeof(struct virtchnl_irq_map_info);
641 if (msglen >= valid_len) {
642 struct virtchnl_irq_map_info *vimi =
643 (struct virtchnl_irq_map_info *)msg;
644 valid_len += (vimi->num_vectors *
645 sizeof(struct virtchnl_vector_map));
646 if (vimi->num_vectors == 0)
647 err_msg_format = TRUE;
650 case VIRTCHNL_OP_ENABLE_QUEUES:
651 case VIRTCHNL_OP_DISABLE_QUEUES:
652 valid_len = sizeof(struct virtchnl_queue_select);
654 case VIRTCHNL_OP_ADD_ETH_ADDR:
655 case VIRTCHNL_OP_DEL_ETH_ADDR:
656 valid_len = sizeof(struct virtchnl_ether_addr_list);
657 if (msglen >= valid_len) {
658 struct virtchnl_ether_addr_list *veal =
659 (struct virtchnl_ether_addr_list *)msg;
660 valid_len += veal->num_elements *
661 sizeof(struct virtchnl_ether_addr);
662 if (veal->num_elements == 0)
663 err_msg_format = TRUE;
666 case VIRTCHNL_OP_ADD_VLAN:
667 case VIRTCHNL_OP_DEL_VLAN:
668 valid_len = sizeof(struct virtchnl_vlan_filter_list);
669 if (msglen >= valid_len) {
670 struct virtchnl_vlan_filter_list *vfl =
671 (struct virtchnl_vlan_filter_list *)msg;
672 valid_len += vfl->num_elements * sizeof(u16);
673 if (vfl->num_elements == 0)
674 err_msg_format = TRUE;
677 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
678 valid_len = sizeof(struct virtchnl_promisc_info);
680 case VIRTCHNL_OP_GET_STATS:
681 valid_len = sizeof(struct virtchnl_queue_select);
683 case VIRTCHNL_OP_IWARP:
684 /* These messages are opaque to us and will be validated in
685 * the RDMA client code. We just need to check for nonzero
686 * length. The firmware will enforce max length restrictions.
691 err_msg_format = TRUE;
693 case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
695 case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
696 valid_len = sizeof(struct virtchnl_iwarp_qvlist_info);
697 if (msglen >= valid_len) {
698 struct virtchnl_iwarp_qvlist_info *qv =
699 (struct virtchnl_iwarp_qvlist_info *)msg;
700 if (qv->num_vectors == 0) {
701 err_msg_format = TRUE;
704 valid_len += ((qv->num_vectors - 1) *
705 sizeof(struct virtchnl_iwarp_qv_info));
708 case VIRTCHNL_OP_CONFIG_RSS_KEY:
709 valid_len = sizeof(struct virtchnl_rss_key);
710 if (msglen >= valid_len) {
711 struct virtchnl_rss_key *vrk =
712 (struct virtchnl_rss_key *)msg;
713 valid_len += vrk->key_len - 1;
716 case VIRTCHNL_OP_CONFIG_RSS_LUT:
717 valid_len = sizeof(struct virtchnl_rss_lut);
718 if (msglen >= valid_len) {
719 struct virtchnl_rss_lut *vrl =
720 (struct virtchnl_rss_lut *)msg;
721 valid_len += vrl->lut_entries - 1;
724 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
726 case VIRTCHNL_OP_SET_RSS_HENA:
727 valid_len = sizeof(struct virtchnl_rss_hena);
729 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
730 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
732 case VIRTCHNL_OP_REQUEST_QUEUES:
733 valid_len = sizeof(struct virtchnl_vf_res_request);
735 /* These are always errors coming from the VF. */
736 case VIRTCHNL_OP_EVENT:
737 case VIRTCHNL_OP_UNKNOWN:
739 return VIRTCHNL_ERR_PARAM;
741 /* few more checks */
742 if (err_msg_format || valid_len != msglen)
743 return VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH;
747 #endif /* _VIRTCHNL_H_ */