1 /* SPDX-License-Identifier: BSD-3-Clause */
2 /* Copyright (c) 2021, Intel Corporation
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the Intel Corporation nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
37 * This header file describes the VF-PF communication protocol used
38 * by the drivers for all devices starting from our 40G product line
40 * Admin queue buffer usage:
41 * desc->opcode is always aqc_opc_send_msg_to_pf
42 * flags, retval, datalen, and data addr are all used normally.
43 * The Firmware copies the cookie fields when sending messages between the
44 * PF and VF, but uses all other fields internally. Due to this limitation,
45 * we must send all messages as "indirect", i.e. using an external buffer.
47 * All the VSI indexes are relative to the VF. Each VF can have maximum of
48 * three VSIs. All the queue indexes are relative to the VSI. Each VF can
49 * have a maximum of sixteen queues for all of its VSIs.
51 * The PF is required to return a status code in v_retval for all messages
52 * except RESET_VF, which does not require any response. The return value
53 * is of status_code type, defined in the shared type.h.
55 * In general, VF driver initialization should roughly follow the order of
56 * these opcodes. The VF driver must first validate the API version of the
57 * PF driver, then request a reset, then get resources, then configure
58 * queues and interrupts. After these operations are complete, the VF
59 * driver may start its queues, optionally add MAC and VLAN filters, and
63 /* START GENERIC DEFINES
64 * Need to ensure the following enums and defines hold the same meaning and
65 * value in current and future projects
69 enum virtchnl_status_code {
70 VIRTCHNL_STATUS_SUCCESS = 0,
71 VIRTCHNL_STATUS_ERR_PARAM = -5,
72 VIRTCHNL_STATUS_ERR_NO_MEMORY = -18,
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_ERR_ADMIN_QUEUE_ERROR = -53,
77 VIRTCHNL_STATUS_ERR_NOT_SUPPORTED = -64,
80 /* Backward compatibility */
81 #define VIRTCHNL_ERR_PARAM VIRTCHNL_STATUS_ERR_PARAM
82 #define VIRTCHNL_STATUS_NOT_SUPPORTED VIRTCHNL_STATUS_ERR_NOT_SUPPORTED
84 #define VIRTCHNL_LINK_SPEED_2_5GB_SHIFT 0x0
85 #define VIRTCHNL_LINK_SPEED_100MB_SHIFT 0x1
86 #define VIRTCHNL_LINK_SPEED_1000MB_SHIFT 0x2
87 #define VIRTCHNL_LINK_SPEED_10GB_SHIFT 0x3
88 #define VIRTCHNL_LINK_SPEED_40GB_SHIFT 0x4
89 #define VIRTCHNL_LINK_SPEED_20GB_SHIFT 0x5
90 #define VIRTCHNL_LINK_SPEED_25GB_SHIFT 0x6
91 #define VIRTCHNL_LINK_SPEED_5GB_SHIFT 0x7
93 enum virtchnl_link_speed {
94 VIRTCHNL_LINK_SPEED_UNKNOWN = 0,
95 VIRTCHNL_LINK_SPEED_100MB = BIT(VIRTCHNL_LINK_SPEED_100MB_SHIFT),
96 VIRTCHNL_LINK_SPEED_1GB = BIT(VIRTCHNL_LINK_SPEED_1000MB_SHIFT),
97 VIRTCHNL_LINK_SPEED_10GB = BIT(VIRTCHNL_LINK_SPEED_10GB_SHIFT),
98 VIRTCHNL_LINK_SPEED_40GB = BIT(VIRTCHNL_LINK_SPEED_40GB_SHIFT),
99 VIRTCHNL_LINK_SPEED_20GB = BIT(VIRTCHNL_LINK_SPEED_20GB_SHIFT),
100 VIRTCHNL_LINK_SPEED_25GB = BIT(VIRTCHNL_LINK_SPEED_25GB_SHIFT),
101 VIRTCHNL_LINK_SPEED_2_5GB = BIT(VIRTCHNL_LINK_SPEED_2_5GB_SHIFT),
102 VIRTCHNL_LINK_SPEED_5GB = BIT(VIRTCHNL_LINK_SPEED_5GB_SHIFT),
105 /* for hsplit_0 field of Rx HMC context */
106 /* deprecated with AVF 1.0 */
107 enum virtchnl_rx_hsplit {
108 VIRTCHNL_RX_HSPLIT_NO_SPLIT = 0,
109 VIRTCHNL_RX_HSPLIT_SPLIT_L2 = 1,
110 VIRTCHNL_RX_HSPLIT_SPLIT_IP = 2,
111 VIRTCHNL_RX_HSPLIT_SPLIT_TCP_UDP = 4,
112 VIRTCHNL_RX_HSPLIT_SPLIT_SCTP = 8,
115 #define VIRTCHNL_ETH_LENGTH_OF_ADDRESS 6
116 /* END GENERIC DEFINES */
118 /* Opcodes for VF-PF communication. These are placed in the v_opcode field
119 * of the virtchnl_msg structure.
122 /* The PF sends status change events to VFs using
123 * the VIRTCHNL_OP_EVENT opcode.
124 * VFs send requests to the PF using the other ops.
125 * Use of "advanced opcode" features must be negotiated as part of capabilities
126 * exchange and are not considered part of base mode feature set.
128 VIRTCHNL_OP_UNKNOWN = 0,
129 VIRTCHNL_OP_VERSION = 1, /* must ALWAYS be 1 */
130 VIRTCHNL_OP_RESET_VF = 2,
131 VIRTCHNL_OP_GET_VF_RESOURCES = 3,
132 VIRTCHNL_OP_CONFIG_TX_QUEUE = 4,
133 VIRTCHNL_OP_CONFIG_RX_QUEUE = 5,
134 VIRTCHNL_OP_CONFIG_VSI_QUEUES = 6,
135 VIRTCHNL_OP_CONFIG_IRQ_MAP = 7,
136 VIRTCHNL_OP_ENABLE_QUEUES = 8,
137 VIRTCHNL_OP_DISABLE_QUEUES = 9,
138 VIRTCHNL_OP_ADD_ETH_ADDR = 10,
139 VIRTCHNL_OP_DEL_ETH_ADDR = 11,
140 VIRTCHNL_OP_ADD_VLAN = 12,
141 VIRTCHNL_OP_DEL_VLAN = 13,
142 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE = 14,
143 VIRTCHNL_OP_GET_STATS = 15,
144 VIRTCHNL_OP_RSVD = 16,
145 VIRTCHNL_OP_EVENT = 17, /* must ALWAYS be 17 */
146 /* opcode 19 is reserved */
147 /* opcodes 20, 21, and 22 are reserved */
148 VIRTCHNL_OP_CONFIG_RSS_KEY = 23,
149 VIRTCHNL_OP_CONFIG_RSS_LUT = 24,
150 VIRTCHNL_OP_GET_RSS_HENA_CAPS = 25,
151 VIRTCHNL_OP_SET_RSS_HENA = 26,
152 VIRTCHNL_OP_ENABLE_VLAN_STRIPPING = 27,
153 VIRTCHNL_OP_DISABLE_VLAN_STRIPPING = 28,
154 VIRTCHNL_OP_REQUEST_QUEUES = 29,
155 VIRTCHNL_OP_ENABLE_CHANNELS = 30,
156 VIRTCHNL_OP_DISABLE_CHANNELS = 31,
157 VIRTCHNL_OP_ADD_CLOUD_FILTER = 32,
158 VIRTCHNL_OP_DEL_CLOUD_FILTER = 33,
159 /* opcode 34 is reserved */
160 /* opcodes 39, 40, 41, 42 and 43 are reserved */
161 /* opcode 44 is reserved */
162 /* opcode 45, 46, 47, 48 and 49 are reserved */
163 VIRTCHNL_OP_GET_MAX_RSS_QREGION = 50,
164 VIRTCHNL_OP_ENABLE_QUEUES_V2 = 107,
165 VIRTCHNL_OP_DISABLE_QUEUES_V2 = 108,
166 VIRTCHNL_OP_MAP_QUEUE_VECTOR = 111,
170 static inline const char *virtchnl_op_str(enum virtchnl_ops v_opcode)
173 case VIRTCHNL_OP_UNKNOWN:
174 return "VIRTCHNL_OP_UNKNOWN";
175 case VIRTCHNL_OP_VERSION:
176 return "VIRTCHNL_OP_VERSION";
177 case VIRTCHNL_OP_RESET_VF:
178 return "VIRTCHNL_OP_RESET_VF";
179 case VIRTCHNL_OP_GET_VF_RESOURCES:
180 return "VIRTCHNL_OP_GET_VF_RESOURCES";
181 case VIRTCHNL_OP_CONFIG_TX_QUEUE:
182 return "VIRTCHNL_OP_CONFIG_TX_QUEUE";
183 case VIRTCHNL_OP_CONFIG_RX_QUEUE:
184 return "VIRTCHNL_OP_CONFIG_RX_QUEUE";
185 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
186 return "VIRTCHNL_OP_CONFIG_VSI_QUEUES";
187 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
188 return "VIRTCHNL_OP_CONFIG_IRQ_MAP";
189 case VIRTCHNL_OP_ENABLE_QUEUES:
190 return "VIRTCHNL_OP_ENABLE_QUEUES";
191 case VIRTCHNL_OP_DISABLE_QUEUES:
192 return "VIRTCHNL_OP_DISABLE_QUEUES";
193 case VIRTCHNL_OP_ADD_ETH_ADDR:
194 return "VIRTCHNL_OP_ADD_ETH_ADDR";
195 case VIRTCHNL_OP_DEL_ETH_ADDR:
196 return "VIRTCHNL_OP_DEL_ETH_ADDR";
197 case VIRTCHNL_OP_ADD_VLAN:
198 return "VIRTCHNL_OP_ADD_VLAN";
199 case VIRTCHNL_OP_DEL_VLAN:
200 return "VIRTCHNL_OP_DEL_VLAN";
201 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
202 return "VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE";
203 case VIRTCHNL_OP_GET_STATS:
204 return "VIRTCHNL_OP_GET_STATS";
205 case VIRTCHNL_OP_RSVD:
206 return "VIRTCHNL_OP_RSVD";
207 case VIRTCHNL_OP_EVENT:
208 return "VIRTCHNL_OP_EVENT";
209 case VIRTCHNL_OP_CONFIG_RSS_KEY:
210 return "VIRTCHNL_OP_CONFIG_RSS_KEY";
211 case VIRTCHNL_OP_CONFIG_RSS_LUT:
212 return "VIRTCHNL_OP_CONFIG_RSS_LUT";
213 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
214 return "VIRTCHNL_OP_GET_RSS_HENA_CAPS";
215 case VIRTCHNL_OP_SET_RSS_HENA:
216 return "VIRTCHNL_OP_SET_RSS_HENA";
217 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
218 return "VIRTCHNL_OP_ENABLE_VLAN_STRIPPING";
219 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
220 return "VIRTCHNL_OP_DISABLE_VLAN_STRIPPING";
221 case VIRTCHNL_OP_REQUEST_QUEUES:
222 return "VIRTCHNL_OP_REQUEST_QUEUES";
223 case VIRTCHNL_OP_ENABLE_CHANNELS:
224 return "VIRTCHNL_OP_ENABLE_CHANNELS";
225 case VIRTCHNL_OP_DISABLE_CHANNELS:
226 return "VIRTCHNL_OP_DISABLE_CHANNELS";
227 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
228 return "VIRTCHNL_OP_ADD_CLOUD_FILTER";
229 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
230 return "VIRTCHNL_OP_DEL_CLOUD_FILTER";
231 case VIRTCHNL_OP_GET_MAX_RSS_QREGION:
232 return "VIRTCHNL_OP_GET_MAX_RSS_QREGION";
233 case VIRTCHNL_OP_ENABLE_QUEUES_V2:
234 return "VIRTCHNL_OP_ENABLE_QUEUES_V2";
235 case VIRTCHNL_OP_DISABLE_QUEUES_V2:
236 return "VIRTCHNL_OP_DISABLE_QUEUES_V2";
237 case VIRTCHNL_OP_MAP_QUEUE_VECTOR:
238 return "VIRTCHNL_OP_MAP_QUEUE_VECTOR";
239 case VIRTCHNL_OP_MAX:
240 return "VIRTCHNL_OP_MAX";
242 return "Unsupported (update virtchnl.h)";
246 /* These macros are used to generate compilation errors if a structure/union
247 * is not exactly the correct length. It gives a divide by zero error if the
248 * structure/union is not of the correct size, otherwise it creates an enum
249 * that is never used.
251 #define VIRTCHNL_CHECK_STRUCT_LEN(n, X) enum virtchnl_static_assert_enum_##X \
252 { virtchnl_static_assert_##X = (n)/((sizeof(struct X) == (n)) ? 1 : 0) }
253 #define VIRTCHNL_CHECK_UNION_LEN(n, X) enum virtchnl_static_asset_enum_##X \
254 { virtchnl_static_assert_##X = (n)/((sizeof(union X) == (n)) ? 1 : 0) }
256 /* Virtual channel message descriptor. This overlays the admin queue
257 * descriptor. All other data is passed in external buffers.
260 struct virtchnl_msg {
261 u8 pad[8]; /* AQ flags/opcode/len/retval fields */
262 enum virtchnl_ops v_opcode; /* avoid confusion with desc->opcode */
263 enum virtchnl_status_code v_retval; /* ditto for desc->retval */
264 u32 vfid; /* used by PF when sending to VF */
267 VIRTCHNL_CHECK_STRUCT_LEN(20, virtchnl_msg);
269 /* Message descriptions and data structures. */
271 /* VIRTCHNL_OP_VERSION
272 * VF posts its version number to the PF. PF responds with its version number
273 * in the same format, along with a return code.
274 * Reply from PF has its major/minor versions also in param0 and param1.
275 * If there is a major version mismatch, then the VF cannot operate.
276 * If there is a minor version mismatch, then the VF can operate but should
277 * add a warning to the system log.
279 * This enum element MUST always be specified as == 1, regardless of other
280 * changes in the API. The PF must always respond to this message without
281 * error regardless of version mismatch.
283 #define VIRTCHNL_VERSION_MAJOR 1
284 #define VIRTCHNL_VERSION_MINOR 1
285 #define VIRTCHNL_VERSION_MINOR_NO_VF_CAPS 0
287 struct virtchnl_version_info {
292 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_version_info);
294 #define VF_IS_V10(_v) (((_v)->major == 1) && ((_v)->minor == 0))
295 #define VF_IS_V11(_ver) (((_ver)->major == 1) && ((_ver)->minor == 1))
297 /* VIRTCHNL_OP_RESET_VF
298 * VF sends this request to PF with no parameters
299 * PF does NOT respond! VF driver must delay then poll VFGEN_RSTAT register
300 * until reset completion is indicated. The admin queue must be reinitialized
301 * after this operation.
303 * When reset is complete, PF must ensure that all queues in all VSIs associated
304 * with the VF are stopped, all queue configurations in the HMC are set to 0,
305 * and all MAC and VLAN filters (except the default MAC address) on all VSIs
309 /* VSI types that use VIRTCHNL interface for VF-PF communication. VSI_SRIOV
310 * vsi_type should always be 6 for backward compatibility. Add other fields
313 enum virtchnl_vsi_type {
314 VIRTCHNL_VSI_TYPE_INVALID = 0,
315 VIRTCHNL_VSI_SRIOV = 6,
318 /* VIRTCHNL_OP_GET_VF_RESOURCES
319 * Version 1.0 VF sends this request to PF with no parameters
320 * Version 1.1 VF sends this request to PF with u32 bitmap of its capabilities
321 * PF responds with an indirect message containing
322 * virtchnl_vf_resource and one or more
323 * virtchnl_vsi_resource structures.
326 struct virtchnl_vsi_resource {
329 enum virtchnl_vsi_type vsi_type;
331 u8 default_mac_addr[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
334 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);
336 /* VF capability flags
337 * VIRTCHNL_VF_OFFLOAD_L2 flag is inclusive of base mode L2 offloads including
338 * TX/RX Checksum offloading and TSO for non-tunnelled packets.
340 #define VIRTCHNL_VF_OFFLOAD_L2 0x00000001
341 #define VIRTCHNL_VF_OFFLOAD_IWARP 0x00000002
342 #define VIRTCHNL_VF_OFFLOAD_RSVD 0x00000004
343 #define VIRTCHNL_VF_OFFLOAD_RSS_AQ 0x00000008
344 #define VIRTCHNL_VF_OFFLOAD_RSS_REG 0x00000010
345 #define VIRTCHNL_VF_OFFLOAD_WB_ON_ITR 0x00000020
346 #define VIRTCHNL_VF_OFFLOAD_REQ_QUEUES 0x00000040
347 #define VIRTCHNL_VF_OFFLOAD_CRC 0x00000080
348 /* 0X00000100 is reserved */
349 #define VIRTCHNL_VF_LARGE_NUM_QPAIRS 0x00000200
350 #define VIRTCHNL_VF_OFFLOAD_VLAN 0x00010000
351 #define VIRTCHNL_VF_OFFLOAD_RX_POLLING 0x00020000
352 #define VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2 0x00040000
353 #define VIRTCHNL_VF_OFFLOAD_RSS_PF 0X00080000
354 #define VIRTCHNL_VF_OFFLOAD_ENCAP 0X00100000
355 #define VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM 0X00200000
356 #define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM 0X00400000
357 #define VIRTCHNL_VF_OFFLOAD_ADQ 0X00800000
358 #define VIRTCHNL_VF_OFFLOAD_ADQ_V2 0X01000000
359 #define VIRTCHNL_VF_OFFLOAD_USO 0X02000000
360 /* 0x04000000 is reserved */
361 /* 0X08000000 and 0X10000000 are reserved */
362 /* 0X20000000 is reserved */
363 /* 0X40000000 is reserved */
365 /* Define below the capability flags that are not offloads */
366 #define VIRTCHNL_VF_CAP_ADV_LINK_SPEED 0x00000080
367 #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \
368 VIRTCHNL_VF_OFFLOAD_VLAN | \
369 VIRTCHNL_VF_OFFLOAD_RSS_PF)
371 struct virtchnl_vf_resource {
381 struct virtchnl_vsi_resource vsi_res[1];
384 VIRTCHNL_CHECK_STRUCT_LEN(36, virtchnl_vf_resource);
386 /* VIRTCHNL_OP_CONFIG_TX_QUEUE
387 * VF sends this message to set up parameters for one TX queue.
388 * External data buffer contains one instance of virtchnl_txq_info.
389 * PF configures requested queue and returns a status code.
392 /* Tx queue config info */
393 struct virtchnl_txq_info {
396 u16 ring_len; /* number of descriptors, multiple of 8 */
397 u16 headwb_enabled; /* deprecated with AVF 1.0 */
399 u64 dma_headwb_addr; /* deprecated with AVF 1.0 */
402 VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_txq_info);
404 /* VIRTCHNL_OP_CONFIG_RX_QUEUE
405 * VF sends this message to set up parameters for one RX queue.
406 * External data buffer contains one instance of virtchnl_rxq_info.
407 * PF configures requested queue and returns a status code. The
408 * crc_disable flag disables CRC stripping on the VF. Setting
409 * the crc_disable flag to 1 will disable CRC stripping for each
410 * queue in the VF where the flag is set. The VIRTCHNL_VF_OFFLOAD_CRC
411 * offload must have been set prior to sending this info or the PF
412 * will ignore the request. This flag should be set the same for
413 * all of the queues for a VF.
416 /* Rx queue config info */
417 struct virtchnl_rxq_info {
420 u32 ring_len; /* number of descriptors, multiple of 32 */
422 u16 splithdr_enabled; /* deprecated with AVF 1.0 */
428 enum virtchnl_rx_hsplit rx_split_pos; /* deprecated with AVF 1.0 */
432 VIRTCHNL_CHECK_STRUCT_LEN(40, virtchnl_rxq_info);
434 /* VIRTCHNL_OP_CONFIG_VSI_QUEUES
435 * VF sends this message to set parameters for active TX and RX queues
436 * associated with the specified VSI.
437 * PF configures queues and returns status.
438 * If the number of queues specified is greater than the number of queues
439 * associated with the VSI, an error is returned and no queues are configured.
440 * NOTE: The VF is not required to configure all queues in a single request.
441 * It may send multiple messages. PF drivers must correctly handle all VF
444 struct virtchnl_queue_pair_info {
445 /* NOTE: vsi_id and queue_id should be identical for both queues. */
446 struct virtchnl_txq_info txq;
447 struct virtchnl_rxq_info rxq;
450 VIRTCHNL_CHECK_STRUCT_LEN(64, virtchnl_queue_pair_info);
452 struct virtchnl_vsi_queue_config_info {
456 struct virtchnl_queue_pair_info qpair[1];
459 VIRTCHNL_CHECK_STRUCT_LEN(72, virtchnl_vsi_queue_config_info);
461 /* VIRTCHNL_OP_REQUEST_QUEUES
462 * VF sends this message to request the PF to allocate additional queues to
463 * this VF. Each VF gets a guaranteed number of queues on init but asking for
464 * additional queues must be negotiated. This is a best effort request as it
465 * is possible the PF does not have enough queues left to support the request.
466 * If the PF cannot support the number requested it will respond with the
467 * maximum number it is able to support. If the request is successful, PF will
468 * then reset the VF to institute required changes.
471 /* VF resource request */
472 struct virtchnl_vf_res_request {
476 /* VIRTCHNL_OP_CONFIG_IRQ_MAP
477 * VF uses this message to map vectors to queues.
478 * The rxq_map and txq_map fields are bitmaps used to indicate which queues
479 * are to be associated with the specified vector.
480 * The "other" causes are always mapped to vector 0. The VF may not request
481 * that vector 0 be used for traffic.
482 * PF configures interrupt mapping and returns status.
483 * NOTE: due to hardware requirements, all active queues (both TX and RX)
484 * should be mapped to interrupts, even if the driver intends to operate
485 * only in polling mode. In this case the interrupt may be disabled, but
486 * the ITR timer will still run to trigger writebacks.
488 struct virtchnl_vector_map {
497 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_vector_map);
499 struct virtchnl_irq_map_info {
501 struct virtchnl_vector_map vecmap[1];
504 VIRTCHNL_CHECK_STRUCT_LEN(14, virtchnl_irq_map_info);
506 /* VIRTCHNL_OP_ENABLE_QUEUES
507 * VIRTCHNL_OP_DISABLE_QUEUES
508 * VF sends these message to enable or disable TX/RX queue pairs.
509 * The queues fields are bitmaps indicating which queues to act upon.
510 * (Currently, we only support 16 queues per VF, but we make the field
511 * u32 to allow for expansion.)
512 * PF performs requested action and returns status.
513 * NOTE: The VF is not required to enable/disable all queues in a single
514 * request. It may send multiple messages.
515 * PF drivers must correctly handle all VF requests.
517 struct virtchnl_queue_select {
524 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_queue_select);
526 /* VIRTCHNL_OP_GET_MAX_RSS_QREGION
528 * if VIRTCHNL_VF_LARGE_NUM_QPAIRS was negotiated in VIRTCHNL_OP_GET_VF_RESOURCES
529 * then this op must be supported.
531 * VF sends this message in order to query the max RSS queue region
532 * size supported by PF, when VIRTCHNL_VF_LARGE_NUM_QPAIRS is enabled.
533 * This information should be used when configuring the RSS LUT and/or
534 * configuring queue region based filters.
536 * The maximum RSS queue region is 2^qregion_width. So, a qregion_width
537 * of 6 would inform the VF that the PF supports a maximum RSS queue region
540 * A queue region represents a range of queues that can be used to configure
541 * a RSS LUT. For example, if a VF is given 64 queues, but only a max queue
542 * region size of 16 (i.e. 2^qregion_width = 16) then it will only be able
543 * to configure the RSS LUT with queue indices from 0 to 15. However, other
544 * filters can be used to direct packets to queues >15 via specifying a queue
545 * base/offset and queue region width.
547 struct virtchnl_max_rss_qregion {
553 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_max_rss_qregion);
555 /* VIRTCHNL_OP_ADD_ETH_ADDR
556 * VF sends this message in order to add one or more unicast or multicast
557 * address filters for the specified VSI.
558 * PF adds the filters and returns status.
561 /* VIRTCHNL_OP_DEL_ETH_ADDR
562 * VF sends this message in order to remove one or more unicast or multicast
563 * filters for the specified VSI.
564 * PF removes the filters and returns status.
567 /* VIRTCHNL_ETHER_ADDR_LEGACY
568 * Prior to adding the @type member to virtchnl_ether_addr, there were 2 pad
569 * bytes. Moving forward all VF drivers should not set type to
570 * VIRTCHNL_ETHER_ADDR_LEGACY. This is only here to not break previous/legacy
571 * behavior. The control plane function (i.e. PF) can use a best effort method
572 * of tracking the primary/device unicast in this case, but there is no
573 * guarantee and functionality depends on the implementation of the PF.
576 /* VIRTCHNL_ETHER_ADDR_PRIMARY
577 * All VF drivers should set @type to VIRTCHNL_ETHER_ADDR_PRIMARY for the
578 * primary/device unicast MAC address filter for VIRTCHNL_OP_ADD_ETH_ADDR and
579 * VIRTCHNL_OP_DEL_ETH_ADDR. This allows for the underlying control plane
580 * function (i.e. PF) to accurately track and use this MAC address for
581 * displaying on the host and for VM/function reset.
584 /* VIRTCHNL_ETHER_ADDR_EXTRA
585 * All VF drivers should set @type to VIRTCHNL_ETHER_ADDR_EXTRA for any extra
586 * unicast and/or multicast filters that are being added/deleted via
587 * VIRTCHNL_OP_DEL_ETH_ADDR/VIRTCHNL_OP_ADD_ETH_ADDR respectively.
589 struct virtchnl_ether_addr {
590 u8 addr[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
592 #define VIRTCHNL_ETHER_ADDR_LEGACY 0
593 #define VIRTCHNL_ETHER_ADDR_PRIMARY 1
594 #define VIRTCHNL_ETHER_ADDR_EXTRA 2
595 #define VIRTCHNL_ETHER_ADDR_TYPE_MASK 3 /* first two bits of type are valid */
599 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_ether_addr);
601 struct virtchnl_ether_addr_list {
604 struct virtchnl_ether_addr list[1];
607 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_ether_addr_list);
609 /* VIRTCHNL_OP_ADD_VLAN
610 * VF sends this message to add one or more VLAN tag filters for receives.
611 * PF adds the filters and returns status.
612 * If a port VLAN is configured by the PF, this operation will return an
616 /* VIRTCHNL_OP_DEL_VLAN
617 * VF sends this message to remove one or more VLAN tag filters for receives.
618 * PF removes the filters and returns status.
619 * If a port VLAN is configured by the PF, this operation will return an
623 struct virtchnl_vlan_filter_list {
629 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_vlan_filter_list);
631 /* VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE
632 * VF sends VSI id and flags.
633 * PF returns status code in retval.
634 * Note: we assume that broadcast accept mode is always enabled.
636 struct virtchnl_promisc_info {
641 VIRTCHNL_CHECK_STRUCT_LEN(4, virtchnl_promisc_info);
643 #define FLAG_VF_UNICAST_PROMISC 0x00000001
644 #define FLAG_VF_MULTICAST_PROMISC 0x00000002
646 /* VIRTCHNL_OP_GET_STATS
647 * VF sends this message to request stats for the selected VSI. VF uses
648 * the virtchnl_queue_select struct to specify the VSI. The queue_id
649 * field is ignored by the PF.
651 * PF replies with struct virtchnl_eth_stats in an external buffer.
654 struct virtchnl_eth_stats {
655 u64 rx_bytes; /* received bytes */
656 u64 rx_unicast; /* received unicast pkts */
657 u64 rx_multicast; /* received multicast pkts */
658 u64 rx_broadcast; /* received broadcast pkts */
660 u64 rx_unknown_protocol;
661 u64 tx_bytes; /* transmitted bytes */
662 u64 tx_unicast; /* transmitted unicast pkts */
663 u64 tx_multicast; /* transmitted multicast pkts */
664 u64 tx_broadcast; /* transmitted broadcast pkts */
669 /* VIRTCHNL_OP_CONFIG_RSS_KEY
670 * VIRTCHNL_OP_CONFIG_RSS_LUT
671 * VF sends these messages to configure RSS. Only supported if both PF
672 * and VF drivers set the VIRTCHNL_VF_OFFLOAD_RSS_PF bit during
673 * configuration negotiation. If this is the case, then the RSS fields in
674 * the VF resource struct are valid.
675 * Both the key and LUT are initialized to 0 by the PF, meaning that
676 * RSS is effectively disabled until set up by the VF.
678 struct virtchnl_rss_key {
681 u8 key[1]; /* RSS hash key, packed bytes */
684 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_key);
686 struct virtchnl_rss_lut {
689 u8 lut[1]; /* RSS lookup table */
692 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_lut);
694 /* VIRTCHNL_OP_GET_RSS_HENA_CAPS
695 * VIRTCHNL_OP_SET_RSS_HENA
696 * VF sends these messages to get and set the hash filter enable bits for RSS.
697 * By default, the PF sets these to all possible traffic types that the
698 * hardware supports. The VF can query this value if it wants to change the
699 * traffic types that are hashed by the hardware.
701 struct virtchnl_rss_hena {
705 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_rss_hena);
707 /* This is used by PF driver to enforce how many channels can be supported.
708 * When ADQ_V2 capability is negotiated, it will allow 16 channels otherwise
709 * PF driver will allow only max 4 channels
711 #define VIRTCHNL_MAX_ADQ_CHANNELS 4
712 #define VIRTCHNL_MAX_ADQ_V2_CHANNELS 16
714 /* VIRTCHNL_OP_ENABLE_CHANNELS
715 * VIRTCHNL_OP_DISABLE_CHANNELS
716 * VF sends these messages to enable or disable channels based on
717 * the user specified queue count and queue offset for each traffic class.
718 * This struct encompasses all the information that the PF needs from
719 * VF to create a channel.
721 struct virtchnl_channel_info {
722 u16 count; /* number of queues in a channel */
723 u16 offset; /* queues in a channel start from 'offset' */
728 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_channel_info);
730 struct virtchnl_tc_info {
733 struct virtchnl_channel_info list[1];
736 VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_tc_info);
738 /* VIRTCHNL_ADD_CLOUD_FILTER
739 * VIRTCHNL_DEL_CLOUD_FILTER
740 * VF sends these messages to add or delete a cloud filter based on the
741 * user specified match and action filters. These structures encompass
742 * all the information that the PF needs from the VF to add/delete a
746 struct virtchnl_l4_spec {
747 u8 src_mac[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
748 u8 dst_mac[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
749 /* vlan_prio is part of this 16 bit field even from OS perspective
750 * vlan_id:12 is actual vlan_id, then vlanid:bit14..12 is vlan_prio
751 * in future, when decided to offload vlan_prio, pass that information
752 * as part of the "vlan_id" field, Bit14..12
755 __be16 pad; /* reserved for future use */
762 VIRTCHNL_CHECK_STRUCT_LEN(52, virtchnl_l4_spec);
764 union virtchnl_flow_spec {
765 struct virtchnl_l4_spec tcp_spec;
766 u8 buffer[128]; /* reserved for future use */
769 VIRTCHNL_CHECK_UNION_LEN(128, virtchnl_flow_spec);
771 enum virtchnl_action {
773 VIRTCHNL_ACTION_DROP = 0,
774 VIRTCHNL_ACTION_TC_REDIRECT,
775 VIRTCHNL_ACTION_PASSTHRU,
776 VIRTCHNL_ACTION_QUEUE,
777 VIRTCHNL_ACTION_Q_REGION,
778 VIRTCHNL_ACTION_MARK,
779 VIRTCHNL_ACTION_COUNT,
782 enum virtchnl_flow_type {
784 VIRTCHNL_TCP_V4_FLOW = 0,
785 VIRTCHNL_TCP_V6_FLOW,
786 VIRTCHNL_UDP_V4_FLOW,
787 VIRTCHNL_UDP_V6_FLOW,
790 struct virtchnl_filter {
791 union virtchnl_flow_spec data;
792 union virtchnl_flow_spec mask;
793 enum virtchnl_flow_type flow_type;
794 enum virtchnl_action action;
799 VIRTCHNL_CHECK_STRUCT_LEN(272, virtchnl_filter);
802 * PF sends this message to inform the VF driver of events that may affect it.
803 * No direct response is expected from the VF, though it may generate other
804 * messages in response to this one.
806 enum virtchnl_event_codes {
807 VIRTCHNL_EVENT_UNKNOWN = 0,
808 VIRTCHNL_EVENT_LINK_CHANGE,
809 VIRTCHNL_EVENT_RESET_IMPENDING,
810 VIRTCHNL_EVENT_PF_DRIVER_CLOSE,
813 #define PF_EVENT_SEVERITY_INFO 0
814 #define PF_EVENT_SEVERITY_ATTENTION 1
815 #define PF_EVENT_SEVERITY_ACTION_REQUIRED 2
816 #define PF_EVENT_SEVERITY_CERTAIN_DOOM 255
818 struct virtchnl_pf_event {
819 enum virtchnl_event_codes event;
821 /* If the PF driver does not support the new speed reporting
822 * capabilities then use link_event else use link_event_adv to
823 * get the speed and link information. The ability to understand
824 * new speeds is indicated by setting the capability flag
825 * VIRTCHNL_VF_CAP_ADV_LINK_SPEED in vf_cap_flags parameter
826 * in virtchnl_vf_resource struct and can be used to determine
827 * which link event struct to use below.
830 enum virtchnl_link_speed link_speed;
834 /* link_speed provided in Mbps */
843 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_pf_event);
845 /* VF reset states - these are written into the RSTAT register:
846 * VFGEN_RSTAT on the VF
847 * When the PF initiates a reset, it writes 0
848 * When the reset is complete, it writes 1
849 * When the PF detects that the VF has recovered, it writes 2
850 * VF checks this register periodically to determine if a reset has occurred,
851 * then polls it to know when the reset is complete.
852 * If either the PF or VF reads the register while the hardware
853 * is in a reset state, it will return DEADBEEF, which, when masked
856 enum virtchnl_vfr_states {
857 VIRTCHNL_VFR_INPROGRESS = 0,
858 VIRTCHNL_VFR_COMPLETED,
859 VIRTCHNL_VFR_VFACTIVE,
862 /* TX and RX queue types are valid in legacy as well as split queue models.
863 * With Split Queue model, 2 additional types are introduced - TX_COMPLETION
864 * and RX_BUFFER. In split queue model, RX corresponds to the queue where HW
867 enum virtchnl_queue_type {
868 VIRTCHNL_QUEUE_TYPE_TX = 0,
869 VIRTCHNL_QUEUE_TYPE_RX = 1,
870 VIRTCHNL_QUEUE_TYPE_TX_COMPLETION = 2,
871 VIRTCHNL_QUEUE_TYPE_RX_BUFFER = 3,
872 VIRTCHNL_QUEUE_TYPE_CONFIG_TX = 4,
873 VIRTCHNL_QUEUE_TYPE_CONFIG_RX = 5
876 /* structure to specify a chunk of contiguous queues */
877 struct virtchnl_queue_chunk {
878 enum virtchnl_queue_type type;
883 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_queue_chunk);
885 /* structure to specify several chunks of contiguous queues */
886 struct virtchnl_queue_chunks {
889 struct virtchnl_queue_chunk chunks[1];
892 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_queue_chunks);
894 /* VIRTCHNL_OP_ENABLE_QUEUES_V2
895 * VIRTCHNL_OP_DISABLE_QUEUES_V2
896 * VIRTCHNL_OP_DEL_QUEUES
898 * If VIRTCHNL_CAP_EXT_FEATURES was negotiated in VIRTCHNL_OP_GET_VF_RESOURCES
899 * then all of these ops are available.
901 * If VIRTCHNL_VF_LARGE_NUM_QPAIRS was negotiated in VIRTCHNL_OP_GET_VF_RESOURCES
902 * then VIRTCHNL_OP_ENABLE_QUEUES_V2 and VIRTCHNL_OP_DISABLE_QUEUES_V2 are
905 * PF sends these messages to enable, disable or delete queues specified in
906 * chunks. PF sends virtchnl_del_ena_dis_queues struct to specify the queues
907 * to be enabled/disabled/deleted. Also applicable to single queue RX or
908 * TX. CP performs requested action and returns status.
910 struct virtchnl_del_ena_dis_queues {
913 struct virtchnl_queue_chunks chunks;
916 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_del_ena_dis_queues);
918 /* Virtchannel interrupt throttling rate index */
919 enum virtchnl_itr_idx {
920 VIRTCHNL_ITR_IDX_0 = 0,
921 VIRTCHNL_ITR_IDX_1 = 1,
922 VIRTCHNL_ITR_IDX_NO_ITR = 3,
925 /* Queue to vector mapping */
926 struct virtchnl_queue_vector {
930 enum virtchnl_itr_idx itr_idx;
931 enum virtchnl_queue_type queue_type;
934 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_queue_vector);
936 /* VIRTCHNL_OP_MAP_QUEUE_VECTOR
937 * VIRTCHNL_OP_UNMAP_QUEUE_VECTOR
939 * If VIRTCHNL_CAP_EXT_FEATURES was negotiated in VIRTCHNL_OP_GET_VF_RESOURCES
940 * then all of these ops are available.
942 * If VIRTCHNL_VF_LARGE_NUM_QPAIRS was negotiated in VIRTCHNL_OP_GET_VF_RESOURCES
943 * then only VIRTCHNL_OP_MAP_QUEUE_VECTOR is available.
945 * PF sends this message to map or unmap queues to vectors and ITR index
946 * registers. External data buffer contains virtchnl_queue_vector_maps structure
947 * that contains num_qv_maps of virtchnl_queue_vector structures.
948 * CP maps the requested queue vector maps after validating the queue and vector
949 * ids and returns a status code.
951 struct virtchnl_queue_vector_maps {
955 struct virtchnl_queue_vector qv_maps[1];
958 VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_queue_vector_maps);
960 /* Since VF messages are limited by u16 size, precalculate the maximum possible
961 * values of nested elements in virtchnl structures that virtual channel can
962 * possibly handle in a single message.
964 enum virtchnl_vector_limits {
965 VIRTCHNL_OP_CONFIG_VSI_QUEUES_MAX =
966 ((u16)(~0) - sizeof(struct virtchnl_vsi_queue_config_info)) /
967 sizeof(struct virtchnl_queue_pair_info),
969 VIRTCHNL_OP_CONFIG_IRQ_MAP_MAX =
970 ((u16)(~0) - sizeof(struct virtchnl_irq_map_info)) /
971 sizeof(struct virtchnl_vector_map),
973 VIRTCHNL_OP_ADD_DEL_ETH_ADDR_MAX =
974 ((u16)(~0) - sizeof(struct virtchnl_ether_addr_list)) /
975 sizeof(struct virtchnl_ether_addr),
977 VIRTCHNL_OP_ADD_DEL_VLAN_MAX =
978 ((u16)(~0) - sizeof(struct virtchnl_vlan_filter_list)) /
981 VIRTCHNL_OP_ENABLE_CHANNELS_MAX =
982 ((u16)(~0) - sizeof(struct virtchnl_tc_info)) /
983 sizeof(struct virtchnl_channel_info),
985 VIRTCHNL_OP_ENABLE_DISABLE_DEL_QUEUES_V2_MAX =
986 ((u16)(~0) - sizeof(struct virtchnl_del_ena_dis_queues)) /
987 sizeof(struct virtchnl_queue_chunk),
989 VIRTCHNL_OP_MAP_UNMAP_QUEUE_VECTOR_MAX =
990 ((u16)(~0) - sizeof(struct virtchnl_queue_vector_maps)) /
991 sizeof(struct virtchnl_queue_vector),
995 * virtchnl_vc_validate_vf_msg
996 * @ver: Virtchnl version info
997 * @v_opcode: Opcode for the message
998 * @msg: pointer to the msg buffer
999 * @msglen: msg length
1001 * validate msg format against struct for each opcode
1004 virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode,
1005 u8 *msg, u16 msglen)
1007 bool err_msg_format = false;
1010 /* Validate message length. */
1012 case VIRTCHNL_OP_VERSION:
1013 valid_len = sizeof(struct virtchnl_version_info);
1015 case VIRTCHNL_OP_RESET_VF:
1017 case VIRTCHNL_OP_GET_VF_RESOURCES:
1019 valid_len = sizeof(u32);
1021 case VIRTCHNL_OP_CONFIG_TX_QUEUE:
1022 valid_len = sizeof(struct virtchnl_txq_info);
1024 case VIRTCHNL_OP_CONFIG_RX_QUEUE:
1025 valid_len = sizeof(struct virtchnl_rxq_info);
1027 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
1028 valid_len = sizeof(struct virtchnl_vsi_queue_config_info);
1029 if (msglen >= valid_len) {
1030 struct virtchnl_vsi_queue_config_info *vqc =
1031 (struct virtchnl_vsi_queue_config_info *)msg;
1033 if (vqc->num_queue_pairs == 0 || vqc->num_queue_pairs >
1034 VIRTCHNL_OP_CONFIG_VSI_QUEUES_MAX) {
1035 err_msg_format = true;
1039 valid_len += (vqc->num_queue_pairs *
1041 virtchnl_queue_pair_info));
1044 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
1045 valid_len = sizeof(struct virtchnl_irq_map_info);
1046 if (msglen >= valid_len) {
1047 struct virtchnl_irq_map_info *vimi =
1048 (struct virtchnl_irq_map_info *)msg;
1050 if (vimi->num_vectors == 0 || vimi->num_vectors >
1051 VIRTCHNL_OP_CONFIG_IRQ_MAP_MAX) {
1052 err_msg_format = true;
1056 valid_len += (vimi->num_vectors *
1057 sizeof(struct virtchnl_vector_map));
1060 case VIRTCHNL_OP_ENABLE_QUEUES:
1061 case VIRTCHNL_OP_DISABLE_QUEUES:
1062 valid_len = sizeof(struct virtchnl_queue_select);
1064 case VIRTCHNL_OP_GET_MAX_RSS_QREGION:
1066 case VIRTCHNL_OP_ADD_ETH_ADDR:
1067 case VIRTCHNL_OP_DEL_ETH_ADDR:
1068 valid_len = sizeof(struct virtchnl_ether_addr_list);
1069 if (msglen >= valid_len) {
1070 struct virtchnl_ether_addr_list *veal =
1071 (struct virtchnl_ether_addr_list *)msg;
1073 if (veal->num_elements == 0 || veal->num_elements >
1074 VIRTCHNL_OP_ADD_DEL_ETH_ADDR_MAX) {
1075 err_msg_format = true;
1079 valid_len += veal->num_elements *
1080 sizeof(struct virtchnl_ether_addr);
1083 case VIRTCHNL_OP_ADD_VLAN:
1084 case VIRTCHNL_OP_DEL_VLAN:
1085 valid_len = sizeof(struct virtchnl_vlan_filter_list);
1086 if (msglen >= valid_len) {
1087 struct virtchnl_vlan_filter_list *vfl =
1088 (struct virtchnl_vlan_filter_list *)msg;
1090 if (vfl->num_elements == 0 || vfl->num_elements >
1091 VIRTCHNL_OP_ADD_DEL_VLAN_MAX) {
1092 err_msg_format = true;
1096 valid_len += vfl->num_elements * sizeof(u16);
1099 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
1100 valid_len = sizeof(struct virtchnl_promisc_info);
1102 case VIRTCHNL_OP_GET_STATS:
1103 valid_len = sizeof(struct virtchnl_queue_select);
1105 case VIRTCHNL_OP_CONFIG_RSS_KEY:
1106 valid_len = sizeof(struct virtchnl_rss_key);
1107 if (msglen >= valid_len) {
1108 struct virtchnl_rss_key *vrk =
1109 (struct virtchnl_rss_key *)msg;
1111 if (vrk->key_len == 0) {
1112 /* zero length is allowed as input */
1116 valid_len += vrk->key_len - 1;
1119 case VIRTCHNL_OP_CONFIG_RSS_LUT:
1120 valid_len = sizeof(struct virtchnl_rss_lut);
1121 if (msglen >= valid_len) {
1122 struct virtchnl_rss_lut *vrl =
1123 (struct virtchnl_rss_lut *)msg;
1125 if (vrl->lut_entries == 0) {
1126 /* zero entries is allowed as input */
1130 valid_len += vrl->lut_entries - 1;
1133 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
1135 case VIRTCHNL_OP_SET_RSS_HENA:
1136 valid_len = sizeof(struct virtchnl_rss_hena);
1138 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
1139 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
1141 case VIRTCHNL_OP_REQUEST_QUEUES:
1142 valid_len = sizeof(struct virtchnl_vf_res_request);
1144 case VIRTCHNL_OP_ENABLE_CHANNELS:
1145 valid_len = sizeof(struct virtchnl_tc_info);
1146 if (msglen >= valid_len) {
1147 struct virtchnl_tc_info *vti =
1148 (struct virtchnl_tc_info *)msg;
1150 if (vti->num_tc == 0 || vti->num_tc >
1151 VIRTCHNL_OP_ENABLE_CHANNELS_MAX) {
1152 err_msg_format = true;
1156 valid_len += (vti->num_tc - 1) *
1157 sizeof(struct virtchnl_channel_info);
1160 case VIRTCHNL_OP_DISABLE_CHANNELS:
1162 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
1163 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
1164 valid_len = sizeof(struct virtchnl_filter);
1166 case VIRTCHNL_OP_ENABLE_QUEUES_V2:
1167 case VIRTCHNL_OP_DISABLE_QUEUES_V2:
1168 valid_len = sizeof(struct virtchnl_del_ena_dis_queues);
1169 if (msglen >= valid_len) {
1170 struct virtchnl_del_ena_dis_queues *qs =
1171 (struct virtchnl_del_ena_dis_queues *)msg;
1172 if (qs->chunks.num_chunks == 0 ||
1173 qs->chunks.num_chunks > VIRTCHNL_OP_ENABLE_DISABLE_DEL_QUEUES_V2_MAX) {
1174 err_msg_format = true;
1177 valid_len += (qs->chunks.num_chunks - 1) *
1178 sizeof(struct virtchnl_queue_chunk);
1181 case VIRTCHNL_OP_MAP_QUEUE_VECTOR:
1182 valid_len = sizeof(struct virtchnl_queue_vector_maps);
1183 if (msglen >= valid_len) {
1184 struct virtchnl_queue_vector_maps *v_qp =
1185 (struct virtchnl_queue_vector_maps *)msg;
1186 if (v_qp->num_qv_maps == 0 ||
1187 v_qp->num_qv_maps > VIRTCHNL_OP_MAP_UNMAP_QUEUE_VECTOR_MAX) {
1188 err_msg_format = true;
1191 valid_len += (v_qp->num_qv_maps - 1) *
1192 sizeof(struct virtchnl_queue_vector);
1195 /* These are always errors coming from the VF. */
1196 case VIRTCHNL_OP_EVENT:
1197 case VIRTCHNL_OP_UNKNOWN:
1199 return VIRTCHNL_STATUS_ERR_PARAM;
1201 /* few more checks */
1202 if (err_msg_format || valid_len != msglen)
1203 return VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH;
1207 #endif /* _VIRTCHNL_H_ */