1 /*******************************************************************************
3 Copyright (c) 2013 - 2015, Intel Corporation
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32 ***************************************************************************/
38 * This header file describes the VF-PF communication protocol used
39 * by the drivers for all devices starting from our 40G product line
41 * Admin queue buffer usage:
42 * desc->opcode is always aqc_opc_send_msg_to_pf
43 * flags, retval, datalen, and data addr are all used normally.
44 * The Firmware copies the cookie fields when sending messages between the
45 * PF and VF, but uses all other fields internally. Due to this limitation,
46 * we must send all messages as "indirect", i.e. using an external buffer.
48 * All the VSI indexes are relative to the VF. Each VF can have maximum of
49 * three VSIs. All the queue indexes are relative to the VSI. Each VF can
50 * have a maximum of sixteen queues for all of its VSIs.
52 * The PF is required to return a status code in v_retval for all messages
53 * except RESET_VF, which does not require any response. The return value
54 * is of status_code type, defined in the shared type.h.
56 * In general, VF driver initialization should roughly follow the order of
57 * these opcodes. The VF driver must first validate the API version of the
58 * PF driver, then request a reset, then get resources, then configure
59 * queues and interrupts. After these operations are complete, the VF
60 * driver may start its queues, optionally add MAC and VLAN filters, and
64 /* START GENERIC DEFINES
65 * Need to ensure the following enums and defines hold the same meaning and
66 * value in current and future projects
70 enum virtchnl_status_code {
71 VIRTCHNL_STATUS_SUCCESS = 0,
72 VIRTCHNL_ERR_PARAM = -5,
73 VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH = -38,
74 VIRTCHNL_STATUS_ERR_CQP_COMPL_ERROR = -39,
75 VIRTCHNL_STATUS_ERR_INVALID_VF_ID = -40,
76 VIRTCHNL_STATUS_NOT_SUPPORTED = -64,
79 #define VIRTCHNL_LINK_SPEED_100MB_SHIFT 0x1
80 #define VIRTCHNL_LINK_SPEED_1000MB_SHIFT 0x2
81 #define VIRTCHNL_LINK_SPEED_10GB_SHIFT 0x3
82 #define VIRTCHNL_LINK_SPEED_40GB_SHIFT 0x4
83 #define VIRTCHNL_LINK_SPEED_20GB_SHIFT 0x5
84 #define VIRTCHNL_LINK_SPEED_25GB_SHIFT 0x6
86 enum virtchnl_link_speed {
87 VIRTCHNL_LINK_SPEED_UNKNOWN = 0,
88 VIRTCHNL_LINK_SPEED_100MB = BIT(VIRTCHNL_LINK_SPEED_100MB_SHIFT),
89 VIRTCHNL_LINK_SPEED_1GB = BIT(VIRTCHNL_LINK_SPEED_1000MB_SHIFT),
90 VIRTCHNL_LINK_SPEED_10GB = BIT(VIRTCHNL_LINK_SPEED_10GB_SHIFT),
91 VIRTCHNL_LINK_SPEED_40GB = BIT(VIRTCHNL_LINK_SPEED_40GB_SHIFT),
92 VIRTCHNL_LINK_SPEED_20GB = BIT(VIRTCHNL_LINK_SPEED_20GB_SHIFT),
93 VIRTCHNL_LINK_SPEED_25GB = BIT(VIRTCHNL_LINK_SPEED_25GB_SHIFT),
96 /* for hsplit_0 field of Rx HMC context */
97 /* deprecated with AVF 1.0 */
98 enum virtchnl_rx_hsplit {
99 VIRTCHNL_RX_HSPLIT_NO_SPLIT = 0,
100 VIRTCHNL_RX_HSPLIT_SPLIT_L2 = 1,
101 VIRTCHNL_RX_HSPLIT_SPLIT_IP = 2,
102 VIRTCHNL_RX_HSPLIT_SPLIT_TCP_UDP = 4,
103 VIRTCHNL_RX_HSPLIT_SPLIT_SCTP = 8,
106 #define VIRTCHNL_ETH_LENGTH_OF_ADDRESS 6
107 /* END GENERIC DEFINES */
109 /* Opcodes for VF-PF communication. These are placed in the v_opcode field
110 * of the virtchnl_msg structure.
113 /* The PF sends status change events to VFs using
114 * the VIRTCHNL_OP_EVENT opcode.
115 * VFs send requests to the PF using the other ops.
116 * Use of "advanced opcode" features must be negotiated as part of capabilities
117 * exchange and are not considered part of base mode feature set.
119 VIRTCHNL_OP_UNKNOWN = 0,
120 VIRTCHNL_OP_VERSION = 1, /* must ALWAYS be 1 */
121 VIRTCHNL_OP_RESET_VF = 2,
122 VIRTCHNL_OP_GET_VF_RESOURCES = 3,
123 VIRTCHNL_OP_CONFIG_TX_QUEUE = 4,
124 VIRTCHNL_OP_CONFIG_RX_QUEUE = 5,
125 VIRTCHNL_OP_CONFIG_VSI_QUEUES = 6,
126 VIRTCHNL_OP_CONFIG_IRQ_MAP = 7,
127 VIRTCHNL_OP_ENABLE_QUEUES = 8,
128 VIRTCHNL_OP_DISABLE_QUEUES = 9,
129 VIRTCHNL_OP_ADD_ETH_ADDR = 10,
130 VIRTCHNL_OP_DEL_ETH_ADDR = 11,
131 VIRTCHNL_OP_ADD_VLAN = 12,
132 VIRTCHNL_OP_DEL_VLAN = 13,
133 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE = 14,
134 VIRTCHNL_OP_GET_STATS = 15,
135 VIRTCHNL_OP_RSVD = 16,
136 VIRTCHNL_OP_EVENT = 17, /* must ALWAYS be 17 */
137 #ifdef VIRTCHNL_SOL_VF_SUPPORT
138 VIRTCHNL_OP_GET_ADDNL_SOL_CONFIG = 19,
140 #ifdef VIRTCHNL_IWARP
141 VIRTCHNL_OP_IWARP = 20, /* advanced opcode */
142 VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP = 21, /* advanced opcode */
143 VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP = 22, /* advanced opcode */
145 VIRTCHNL_OP_CONFIG_RSS_KEY = 23,
146 VIRTCHNL_OP_CONFIG_RSS_LUT = 24,
147 VIRTCHNL_OP_GET_RSS_HENA_CAPS = 25,
148 VIRTCHNL_OP_SET_RSS_HENA = 26,
149 VIRTCHNL_OP_ENABLE_VLAN_STRIPPING = 27,
150 VIRTCHNL_OP_DISABLE_VLAN_STRIPPING = 28,
151 VIRTCHNL_OP_REQUEST_QUEUES = 29,
155 /* This macro is used to generate a compilation error if a structure
156 * is not exactly the correct length. It gives a divide by zero error if the
157 * structure is not of the correct size, otherwise it creates an enum that is
160 #define VIRTCHNL_CHECK_STRUCT_LEN(n, X) enum virtchnl_static_assert_enum_##X \
161 {virtchnl_static_assert_##X = (n) / ((sizeof(struct X) == (n)) ? 1 : 0)}
163 /* Virtual channel message descriptor. This overlays the admin queue
164 * descriptor. All other data is passed in external buffers.
167 struct virtchnl_msg {
168 u8 pad[8]; /* AQ flags/opcode/len/retval fields */
169 enum virtchnl_ops v_opcode; /* avoid confusion with desc->opcode */
170 enum virtchnl_status_code v_retval; /* ditto for desc->retval */
171 u32 vfid; /* used by PF when sending to VF */
174 VIRTCHNL_CHECK_STRUCT_LEN(20, virtchnl_msg);
176 /* Message descriptions and data structures.*/
178 /* VIRTCHNL_OP_VERSION
179 * VF posts its version number to the PF. PF responds with its version number
180 * in the same format, along with a return code.
181 * Reply from PF has its major/minor versions also in param0 and param1.
182 * If there is a major version mismatch, then the VF cannot operate.
183 * If there is a minor version mismatch, then the VF can operate but should
184 * add a warning to the system log.
186 * This enum element MUST always be specified as == 1, regardless of other
187 * changes in the API. The PF must always respond to this message without
188 * error regardless of version mismatch.
190 #define VIRTCHNL_VERSION_MAJOR 1
191 #define VIRTCHNL_VERSION_MINOR 1
192 #define VIRTCHNL_VERSION_MINOR_NO_VF_CAPS 0
194 struct virtchnl_version_info {
199 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_version_info);
201 #define VF_IS_V10(_v) (((_v)->major == 1) && ((_v)->minor == 0))
202 #define VF_IS_V11(_ver) (((_ver)->major == 1) && ((_ver)->minor == 1))
204 /* VIRTCHNL_OP_RESET_VF
205 * VF sends this request to PF with no parameters
206 * PF does NOT respond! VF driver must delay then poll VFGEN_RSTAT register
207 * until reset completion is indicated. The admin queue must be reinitialized
208 * after this operation.
210 * When reset is complete, PF must ensure that all queues in all VSIs associated
211 * with the VF are stopped, all queue configurations in the HMC are set to 0,
212 * and all MAC and VLAN filters (except the default MAC address) on all VSIs
216 /* VSI types that use VIRTCHNL interface for VF-PF communication. VSI_SRIOV
217 * vsi_type should always be 6 for backward compatibility. Add other fields
220 enum virtchnl_vsi_type {
221 VIRTCHNL_VSI_TYPE_INVALID = 0,
222 VIRTCHNL_VSI_SRIOV = 6,
225 /* VIRTCHNL_OP_GET_VF_RESOURCES
226 * Version 1.0 VF sends this request to PF with no parameters
227 * Version 1.1 VF sends this request to PF with u32 bitmap of its capabilities
228 * PF responds with an indirect message containing
229 * virtchnl_vf_resource and one or more
230 * virtchnl_vsi_resource structures.
233 struct virtchnl_vsi_resource {
236 enum virtchnl_vsi_type vsi_type;
238 u8 default_mac_addr[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
241 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);
244 * VIRTCHNL_VF_OFFLOAD_L2 flag is inclusive of base mode L2 offloads including
245 * TX/RX Checksum offloading and TSO for non-tunnelled packets.
247 #define VIRTCHNL_VF_OFFLOAD_L2 0x00000001
248 #define VIRTCHNL_VF_OFFLOAD_IWARP 0x00000002
249 #define VIRTCHNL_VF_OFFLOAD_RSVD 0x00000004
250 #define VIRTCHNL_VF_OFFLOAD_RSS_AQ 0x00000008
251 #define VIRTCHNL_VF_OFFLOAD_RSS_REG 0x00000010
252 #define VIRTCHNL_VF_OFFLOAD_WB_ON_ITR 0x00000020
253 #define VIRTCHNL_VF_OFFLOAD_REQ_QUEUES 0x00000040
254 #define VIRTCHNL_VF_OFFLOAD_VLAN 0x00010000
255 #define VIRTCHNL_VF_OFFLOAD_RX_POLLING 0x00020000
256 #define VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2 0x00040000
257 #define VIRTCHNL_VF_OFFLOAD_RSS_PF 0X00080000
258 #define VIRTCHNL_VF_OFFLOAD_ENCAP 0X00100000
259 #define VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM 0X00200000
260 #define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM 0X00400000
262 #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \
263 VIRTCHNL_VF_OFFLOAD_VLAN | \
264 VIRTCHNL_VF_OFFLOAD_RSS_PF)
266 struct virtchnl_vf_resource {
272 u32 vf_offload_flags;
276 struct virtchnl_vsi_resource vsi_res[1];
279 VIRTCHNL_CHECK_STRUCT_LEN(36, virtchnl_vf_resource);
281 /* VIRTCHNL_OP_CONFIG_TX_QUEUE
282 * VF sends this message to set up parameters for one TX queue.
283 * External data buffer contains one instance of virtchnl_txq_info.
284 * PF configures requested queue and returns a status code.
287 /* Tx queue config info */
288 struct virtchnl_txq_info {
291 u16 ring_len; /* number of descriptors, multiple of 8 */
292 u16 headwb_enabled; /* deprecated with AVF 1.0 */
294 u64 dma_headwb_addr; /* deprecated with AVF 1.0 */
297 VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_txq_info);
299 /* VIRTCHNL_OP_CONFIG_RX_QUEUE
300 * VF sends this message to set up parameters for one RX queue.
301 * External data buffer contains one instance of virtchnl_rxq_info.
302 * PF configures requested queue and returns a status code.
305 /* Rx queue config info */
306 struct virtchnl_rxq_info {
309 u32 ring_len; /* number of descriptors, multiple of 32 */
311 u16 splithdr_enabled; /* deprecated with AVF 1.0 */
316 enum virtchnl_rx_hsplit rx_split_pos; /* deprecated with AVF 1.0 */
320 VIRTCHNL_CHECK_STRUCT_LEN(40, virtchnl_rxq_info);
322 /* VIRTCHNL_OP_CONFIG_VSI_QUEUES
323 * VF sends this message to set parameters for all active TX and RX queues
324 * associated with the specified VSI.
325 * PF configures queues and returns status.
326 * If the number of queues specified is greater than the number of queues
327 * associated with the VSI, an error is returned and no queues are configured.
329 struct virtchnl_queue_pair_info {
330 /* NOTE: vsi_id and queue_id should be identical for both queues. */
331 struct virtchnl_txq_info txq;
332 struct virtchnl_rxq_info rxq;
335 VIRTCHNL_CHECK_STRUCT_LEN(64, virtchnl_queue_pair_info);
337 struct virtchnl_vsi_queue_config_info {
341 struct virtchnl_queue_pair_info qpair[1];
344 VIRTCHNL_CHECK_STRUCT_LEN(72, virtchnl_vsi_queue_config_info);
346 /* VIRTCHNL_OP_REQUEST_QUEUES
347 * VF sends this message to request the PF to allocate additional queues to
348 * this VF. Each VF gets a guaranteed number of queues on init but asking for
349 * additional queues must be negotiated. This is a best effort request as it
350 * is possible the PF does not have enough queues left to support the request.
351 * If the PF cannot support the number requested it will respond with the
352 * maximum number it is able to support; otherwise it will respond with the
356 /* VF resource request */
357 struct virtchnl_vf_res_request {
361 /* VIRTCHNL_OP_CONFIG_IRQ_MAP
362 * VF uses this message to map vectors to queues.
363 * The rxq_map and txq_map fields are bitmaps used to indicate which queues
364 * are to be associated with the specified vector.
365 * The "other" causes are always mapped to vector 0.
366 * PF configures interrupt mapping and returns status.
368 struct virtchnl_vector_map {
377 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_vector_map);
379 struct virtchnl_irq_map_info {
381 struct virtchnl_vector_map vecmap[1];
384 VIRTCHNL_CHECK_STRUCT_LEN(14, virtchnl_irq_map_info);
386 /* VIRTCHNL_OP_ENABLE_QUEUES
387 * VIRTCHNL_OP_DISABLE_QUEUES
388 * VF sends these message to enable or disable TX/RX queue pairs.
389 * The queues fields are bitmaps indicating which queues to act upon.
390 * (Currently, we only support 16 queues per VF, but we make the field
391 * u32 to allow for expansion.)
392 * PF performs requested action and returns status.
394 struct virtchnl_queue_select {
401 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_queue_select);
403 /* VIRTCHNL_OP_ADD_ETH_ADDR
404 * VF sends this message in order to add one or more unicast or multicast
405 * address filters for the specified VSI.
406 * PF adds the filters and returns status.
409 /* VIRTCHNL_OP_DEL_ETH_ADDR
410 * VF sends this message in order to remove one or more unicast or multicast
411 * filters for the specified VSI.
412 * PF removes the filters and returns status.
415 struct virtchnl_ether_addr {
416 u8 addr[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
420 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_ether_addr);
422 struct virtchnl_ether_addr_list {
425 struct virtchnl_ether_addr list[1];
428 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_ether_addr_list);
430 #ifdef VIRTCHNL_SOL_VF_SUPPORT
431 /* VIRTCHNL_OP_GET_ADDNL_SOL_CONFIG
432 * VF sends this message to get the default MTU and list of additional ethernet
433 * addresses it is allowed to use.
434 * PF responds with an indirect message containing
435 * virtchnl_addnl_solaris_config with zero or more
436 * virtchnl_ether_addr structures.
438 * It is expected that this operation will only ever be needed for Solaris VFs
439 * running under a Solaris PF.
441 struct virtchnl_addnl_solaris_config {
443 struct virtchnl_ether_addr_list al;
447 /* VIRTCHNL_OP_ADD_VLAN
448 * VF sends this message to add one or more VLAN tag filters for receives.
449 * PF adds the filters and returns status.
450 * If a port VLAN is configured by the PF, this operation will return an
454 /* VIRTCHNL_OP_DEL_VLAN
455 * VF sends this message to remove one or more VLAN tag filters for receives.
456 * PF removes the filters and returns status.
457 * If a port VLAN is configured by the PF, this operation will return an
461 struct virtchnl_vlan_filter_list {
467 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_vlan_filter_list);
469 /* VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE
470 * VF sends VSI id and flags.
471 * PF returns status code in retval.
472 * Note: we assume that broadcast accept mode is always enabled.
474 struct virtchnl_promisc_info {
479 VIRTCHNL_CHECK_STRUCT_LEN(4, virtchnl_promisc_info);
481 #define FLAG_VF_UNICAST_PROMISC 0x00000001
482 #define FLAG_VF_MULTICAST_PROMISC 0x00000002
484 /* VIRTCHNL_OP_GET_STATS
485 * VF sends this message to request stats for the selected VSI. VF uses
486 * the virtchnl_queue_select struct to specify the VSI. The queue_id
487 * field is ignored by the PF.
489 * PF replies with struct eth_stats in an external buffer.
492 /* VIRTCHNL_OP_CONFIG_RSS_KEY
493 * VIRTCHNL_OP_CONFIG_RSS_LUT
494 * VF sends these messages to configure RSS. Only supported if both PF
495 * and VF drivers set the VIRTCHNL_VF_OFFLOAD_RSS_PF bit during
496 * configuration negotiation. If this is the case, then the RSS fields in
497 * the VF resource struct are valid.
498 * Both the key and LUT are initialized to 0 by the PF, meaning that
499 * RSS is effectively disabled until set up by the VF.
501 struct virtchnl_rss_key {
504 u8 key[1]; /* RSS hash key, packed bytes */
507 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_key);
509 struct virtchnl_rss_lut {
512 u8 lut[1]; /* RSS lookup table*/
515 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_lut);
517 /* VIRTCHNL_OP_GET_RSS_HENA_CAPS
518 * VIRTCHNL_OP_SET_RSS_HENA
519 * VF sends these messages to get and set the hash filter enable bits for RSS.
520 * By default, the PF sets these to all possible traffic types that the
521 * hardware supports. The VF can query this value if it wants to change the
522 * traffic types that are hashed by the hardware.
524 struct virtchnl_rss_hena {
528 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_rss_hena);
531 * PF sends this message to inform the VF driver of events that may affect it.
532 * No direct response is expected from the VF, though it may generate other
533 * messages in response to this one.
535 enum virtchnl_event_codes {
536 VIRTCHNL_EVENT_UNKNOWN = 0,
537 VIRTCHNL_EVENT_LINK_CHANGE,
538 VIRTCHNL_EVENT_RESET_IMPENDING,
539 VIRTCHNL_EVENT_PF_DRIVER_CLOSE,
542 #define PF_EVENT_SEVERITY_INFO 0
543 #define PF_EVENT_SEVERITY_ATTENTION 1
544 #define PF_EVENT_SEVERITY_ACTION_REQUIRED 2
545 #define PF_EVENT_SEVERITY_CERTAIN_DOOM 255
547 struct virtchnl_pf_event {
548 enum virtchnl_event_codes event;
551 enum virtchnl_link_speed link_speed;
559 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_pf_event);
561 #ifdef VIRTCHNL_IWARP
563 /* VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP
564 * VF uses this message to request PF to map IWARP vectors to IWARP queues.
565 * The request for this originates from the VF IWARP driver through
566 * a client interface between VF LAN and VF IWARP driver.
567 * A vector could have an AEQ and CEQ attached to it although
568 * there is a single AEQ per VF IWARP instance in which case
569 * most vectors will have an INVALID_IDX for aeq and valid idx for ceq.
570 * There will never be a case where there will be multiple CEQs attached
571 * to a single vector.
572 * PF configures interrupt mapping and returns status.
575 /* HW does not define a type value for AEQ; only for RX/TX and CEQ.
576 * In order for us to keep the interface simple, SW will define a
577 * unique type value for AEQ.
579 #define QUEUE_TYPE_PE_AEQ 0x80
580 #define QUEUE_INVALID_IDX 0xFFFF
582 struct virtchnl_iwarp_qv_info {
583 u32 v_idx; /* msix_vector */
589 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_iwarp_qv_info);
591 struct virtchnl_iwarp_qvlist_info {
593 struct virtchnl_iwarp_qv_info qv_info[1];
596 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_iwarp_qvlist_info);
600 /* VF reset states - these are written into the RSTAT register:
601 * VFGEN_RSTAT on the VF
602 * When the PF initiates a reset, it writes 0
603 * When the reset is complete, it writes 1
604 * When the PF detects that the VF has recovered, it writes 2
605 * VF checks this register periodically to determine if a reset has occurred,
606 * then polls it to know when the reset is complete.
607 * If either the PF or VF reads the register while the hardware
608 * is in a reset state, it will return DEADBEEF, which, when masked
611 enum virtchnl_vfr_states {
612 VIRTCHNL_VFR_INPROGRESS = 0,
613 VIRTCHNL_VFR_COMPLETED,
614 VIRTCHNL_VFR_VFACTIVE,
618 * virtchnl_vc_validate_vf_msg
619 * @ver: Virtchnl version info
620 * @v_opcode: Opcode for the message
621 * @msg: pointer to the msg buffer
622 * @msglen: msg length
624 * validate msg format against struct for each opcode
627 virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode,
630 bool err_msg_format = false;
633 /* Validate message length. */
635 case VIRTCHNL_OP_VERSION:
636 valid_len = sizeof(struct virtchnl_version_info);
638 case VIRTCHNL_OP_RESET_VF:
640 case VIRTCHNL_OP_GET_VF_RESOURCES:
642 valid_len = sizeof(u32);
644 case VIRTCHNL_OP_CONFIG_TX_QUEUE:
645 valid_len = sizeof(struct virtchnl_txq_info);
647 case VIRTCHNL_OP_CONFIG_RX_QUEUE:
648 valid_len = sizeof(struct virtchnl_rxq_info);
650 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
651 valid_len = sizeof(struct virtchnl_vsi_queue_config_info);
652 if (msglen >= valid_len) {
653 struct virtchnl_vsi_queue_config_info *vqc =
654 (struct virtchnl_vsi_queue_config_info *)msg;
655 valid_len += (vqc->num_queue_pairs *
657 virtchnl_queue_pair_info));
658 if (vqc->num_queue_pairs == 0)
659 err_msg_format = true;
662 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
663 valid_len = sizeof(struct virtchnl_irq_map_info);
664 if (msglen >= valid_len) {
665 struct virtchnl_irq_map_info *vimi =
666 (struct virtchnl_irq_map_info *)msg;
667 valid_len += (vimi->num_vectors *
668 sizeof(struct virtchnl_vector_map));
669 if (vimi->num_vectors == 0)
670 err_msg_format = true;
673 case VIRTCHNL_OP_ENABLE_QUEUES:
674 case VIRTCHNL_OP_DISABLE_QUEUES:
675 valid_len = sizeof(struct virtchnl_queue_select);
677 case VIRTCHNL_OP_ADD_ETH_ADDR:
678 case VIRTCHNL_OP_DEL_ETH_ADDR:
679 valid_len = sizeof(struct virtchnl_ether_addr_list);
680 if (msglen >= valid_len) {
681 struct virtchnl_ether_addr_list *veal =
682 (struct virtchnl_ether_addr_list *)msg;
683 valid_len += veal->num_elements *
684 sizeof(struct virtchnl_ether_addr);
685 if (veal->num_elements == 0)
686 err_msg_format = true;
689 case VIRTCHNL_OP_ADD_VLAN:
690 case VIRTCHNL_OP_DEL_VLAN:
691 valid_len = sizeof(struct virtchnl_vlan_filter_list);
692 if (msglen >= valid_len) {
693 struct virtchnl_vlan_filter_list *vfl =
694 (struct virtchnl_vlan_filter_list *)msg;
695 valid_len += vfl->num_elements * sizeof(u16);
696 if (vfl->num_elements == 0)
697 err_msg_format = true;
700 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
701 valid_len = sizeof(struct virtchnl_promisc_info);
703 case VIRTCHNL_OP_GET_STATS:
704 valid_len = sizeof(struct virtchnl_queue_select);
706 #ifdef VIRTCHNL_IWARP
707 case VIRTCHNL_OP_IWARP:
708 /* These messages are opaque to us and will be validated in
709 * the RDMA client code. We just need to check for nonzero
710 * length. The firmware will enforce max length restrictions.
715 err_msg_format = true;
717 case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
719 case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
720 valid_len = sizeof(struct virtchnl_iwarp_qvlist_info);
721 if (msglen >= valid_len) {
722 struct virtchnl_iwarp_qvlist_info *qv =
723 (struct virtchnl_iwarp_qvlist_info *)msg;
724 if (qv->num_vectors == 0) {
725 err_msg_format = true;
728 valid_len += ((qv->num_vectors - 1) *
729 sizeof(struct virtchnl_iwarp_qv_info));
733 case VIRTCHNL_OP_CONFIG_RSS_KEY:
734 valid_len = sizeof(struct virtchnl_rss_key);
735 if (msglen >= valid_len) {
736 struct virtchnl_rss_key *vrk =
737 (struct virtchnl_rss_key *)msg;
738 valid_len += vrk->key_len - 1;
741 case VIRTCHNL_OP_CONFIG_RSS_LUT:
742 valid_len = sizeof(struct virtchnl_rss_lut);
743 if (msglen >= valid_len) {
744 struct virtchnl_rss_lut *vrl =
745 (struct virtchnl_rss_lut *)msg;
746 valid_len += vrl->lut_entries - 1;
749 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
751 case VIRTCHNL_OP_SET_RSS_HENA:
752 valid_len = sizeof(struct virtchnl_rss_hena);
754 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
755 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
757 case VIRTCHNL_OP_REQUEST_QUEUES:
758 valid_len = sizeof(struct virtchnl_vf_res_request);
760 /* These are always errors coming from the VF. */
761 case VIRTCHNL_OP_EVENT:
762 case VIRTCHNL_OP_UNKNOWN:
764 return VIRTCHNL_ERR_PARAM;
766 /* few more checks */
767 if ((valid_len != msglen) || (err_msg_format))
768 return VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH;
772 #endif /* _VIRTCHNL_H_ */