1 /* SPDX-License-Identifier: BSD-3-Clause */
2 /* Copyright (c) 2020, 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 */
166 /* These macros are used to generate compilation errors if a structure/union
167 * is not exactly the correct length. It gives a divide by zero error if the
168 * structure/union is not of the correct size, otherwise it creates an enum
169 * that is never used.
171 #define VIRTCHNL_CHECK_STRUCT_LEN(n, X) enum virtchnl_static_assert_enum_##X \
172 { virtchnl_static_assert_##X = (n)/((sizeof(struct X) == (n)) ? 1 : 0) }
173 #define VIRTCHNL_CHECK_UNION_LEN(n, X) enum virtchnl_static_asset_enum_##X \
174 { virtchnl_static_assert_##X = (n)/((sizeof(union X) == (n)) ? 1 : 0) }
176 /* Virtual channel message descriptor. This overlays the admin queue
177 * descriptor. All other data is passed in external buffers.
180 struct virtchnl_msg {
181 u8 pad[8]; /* AQ flags/opcode/len/retval fields */
182 enum virtchnl_ops v_opcode; /* avoid confusion with desc->opcode */
183 enum virtchnl_status_code v_retval; /* ditto for desc->retval */
184 u32 vfid; /* used by PF when sending to VF */
187 VIRTCHNL_CHECK_STRUCT_LEN(20, virtchnl_msg);
189 /* Message descriptions and data structures. */
191 /* VIRTCHNL_OP_VERSION
192 * VF posts its version number to the PF. PF responds with its version number
193 * in the same format, along with a return code.
194 * Reply from PF has its major/minor versions also in param0 and param1.
195 * If there is a major version mismatch, then the VF cannot operate.
196 * If there is a minor version mismatch, then the VF can operate but should
197 * add a warning to the system log.
199 * This enum element MUST always be specified as == 1, regardless of other
200 * changes in the API. The PF must always respond to this message without
201 * error regardless of version mismatch.
203 #define VIRTCHNL_VERSION_MAJOR 1
204 #define VIRTCHNL_VERSION_MINOR 1
205 #define VIRTCHNL_VERSION_MINOR_NO_VF_CAPS 0
207 struct virtchnl_version_info {
212 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_version_info);
214 #define VF_IS_V10(_v) (((_v)->major == 1) && ((_v)->minor == 0))
215 #define VF_IS_V11(_ver) (((_ver)->major == 1) && ((_ver)->minor == 1))
217 /* VIRTCHNL_OP_RESET_VF
218 * VF sends this request to PF with no parameters
219 * PF does NOT respond! VF driver must delay then poll VFGEN_RSTAT register
220 * until reset completion is indicated. The admin queue must be reinitialized
221 * after this operation.
223 * When reset is complete, PF must ensure that all queues in all VSIs associated
224 * with the VF are stopped, all queue configurations in the HMC are set to 0,
225 * and all MAC and VLAN filters (except the default MAC address) on all VSIs
229 /* VSI types that use VIRTCHNL interface for VF-PF communication. VSI_SRIOV
230 * vsi_type should always be 6 for backward compatibility. Add other fields
233 enum virtchnl_vsi_type {
234 VIRTCHNL_VSI_TYPE_INVALID = 0,
235 VIRTCHNL_VSI_SRIOV = 6,
238 /* VIRTCHNL_OP_GET_VF_RESOURCES
239 * Version 1.0 VF sends this request to PF with no parameters
240 * Version 1.1 VF sends this request to PF with u32 bitmap of its capabilities
241 * PF responds with an indirect message containing
242 * virtchnl_vf_resource and one or more
243 * virtchnl_vsi_resource structures.
246 struct virtchnl_vsi_resource {
249 enum virtchnl_vsi_type vsi_type;
251 u8 default_mac_addr[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
254 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);
256 /* VF capability flags
257 * VIRTCHNL_VF_OFFLOAD_L2 flag is inclusive of base mode L2 offloads including
258 * TX/RX Checksum offloading and TSO for non-tunnelled packets.
260 #define VIRTCHNL_VF_OFFLOAD_L2 0x00000001
261 #define VIRTCHNL_VF_OFFLOAD_IWARP 0x00000002
262 #define VIRTCHNL_VF_OFFLOAD_RSVD 0x00000004
263 #define VIRTCHNL_VF_OFFLOAD_RSS_AQ 0x00000008
264 #define VIRTCHNL_VF_OFFLOAD_RSS_REG 0x00000010
265 #define VIRTCHNL_VF_OFFLOAD_WB_ON_ITR 0x00000020
266 #define VIRTCHNL_VF_OFFLOAD_REQ_QUEUES 0x00000040
267 #define VIRTCHNL_VF_OFFLOAD_CRC 0x00000080
268 #define VIRTCHNL_VF_OFFLOAD_VLAN 0x00010000
269 #define VIRTCHNL_VF_OFFLOAD_RX_POLLING 0x00020000
270 #define VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2 0x00040000
271 #define VIRTCHNL_VF_OFFLOAD_RSS_PF 0X00080000
272 #define VIRTCHNL_VF_OFFLOAD_ENCAP 0X00100000
273 #define VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM 0X00200000
274 #define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM 0X00400000
275 #define VIRTCHNL_VF_OFFLOAD_ADQ 0X00800000
276 #define VIRTCHNL_VF_OFFLOAD_ADQ_V2 0X01000000
277 #define VIRTCHNL_VF_OFFLOAD_USO 0X02000000
278 /* 0x04000000 is reserved */
279 /* 0X08000000 and 0X10000000 are reserved */
280 /* 0X20000000 is reserved */
281 /* 0X40000000 is reserved */
282 /* 0X80000000 is reserved */
284 /* Define below the capability flags that are not offloads */
285 #define VIRTCHNL_VF_CAP_ADV_LINK_SPEED 0x00000080
286 #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \
287 VIRTCHNL_VF_OFFLOAD_VLAN | \
288 VIRTCHNL_VF_OFFLOAD_RSS_PF)
290 struct virtchnl_vf_resource {
300 struct virtchnl_vsi_resource vsi_res[1];
303 VIRTCHNL_CHECK_STRUCT_LEN(36, virtchnl_vf_resource);
305 /* VIRTCHNL_OP_CONFIG_TX_QUEUE
306 * VF sends this message to set up parameters for one TX queue.
307 * External data buffer contains one instance of virtchnl_txq_info.
308 * PF configures requested queue and returns a status code.
311 /* Tx queue config info */
312 struct virtchnl_txq_info {
315 u16 ring_len; /* number of descriptors, multiple of 8 */
316 u16 headwb_enabled; /* deprecated with AVF 1.0 */
318 u64 dma_headwb_addr; /* deprecated with AVF 1.0 */
321 VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_txq_info);
323 /* VIRTCHNL_OP_CONFIG_RX_QUEUE
324 * VF sends this message to set up parameters for one RX queue.
325 * External data buffer contains one instance of virtchnl_rxq_info.
326 * PF configures requested queue and returns a status code. The
327 * crc_disable flag disables CRC stripping on the VF. Setting
328 * the crc_disable flag to 1 will disable CRC stripping for each
329 * queue in the VF where the flag is set. The VIRTCHNL_VF_OFFLOAD_CRC
330 * offload must have been set prior to sending this info or the PF
331 * will ignore the request. This flag should be set the same for
332 * all of the queues for a VF.
335 /* Rx queue config info */
336 struct virtchnl_rxq_info {
339 u32 ring_len; /* number of descriptors, multiple of 32 */
341 u16 splithdr_enabled; /* deprecated with AVF 1.0 */
347 enum virtchnl_rx_hsplit rx_split_pos; /* deprecated with AVF 1.0 */
351 VIRTCHNL_CHECK_STRUCT_LEN(40, virtchnl_rxq_info);
353 /* VIRTCHNL_OP_CONFIG_VSI_QUEUES
354 * VF sends this message to set parameters for active TX and RX queues
355 * associated with the specified VSI.
356 * PF configures queues and returns status.
357 * If the number of queues specified is greater than the number of queues
358 * associated with the VSI, an error is returned and no queues are configured.
359 * NOTE: The VF is not required to configure all queues in a single request.
360 * It may send multiple messages. PF drivers must correctly handle all VF
363 struct virtchnl_queue_pair_info {
364 /* NOTE: vsi_id and queue_id should be identical for both queues. */
365 struct virtchnl_txq_info txq;
366 struct virtchnl_rxq_info rxq;
369 VIRTCHNL_CHECK_STRUCT_LEN(64, virtchnl_queue_pair_info);
371 struct virtchnl_vsi_queue_config_info {
375 struct virtchnl_queue_pair_info qpair[1];
378 VIRTCHNL_CHECK_STRUCT_LEN(72, virtchnl_vsi_queue_config_info);
380 /* VIRTCHNL_OP_REQUEST_QUEUES
381 * VF sends this message to request the PF to allocate additional queues to
382 * this VF. Each VF gets a guaranteed number of queues on init but asking for
383 * additional queues must be negotiated. This is a best effort request as it
384 * is possible the PF does not have enough queues left to support the request.
385 * If the PF cannot support the number requested it will respond with the
386 * maximum number it is able to support. If the request is successful, PF will
387 * then reset the VF to institute required changes.
390 /* VF resource request */
391 struct virtchnl_vf_res_request {
395 /* VIRTCHNL_OP_CONFIG_IRQ_MAP
396 * VF uses this message to map vectors to queues.
397 * The rxq_map and txq_map fields are bitmaps used to indicate which queues
398 * are to be associated with the specified vector.
399 * The "other" causes are always mapped to vector 0. The VF may not request
400 * that vector 0 be used for traffic.
401 * PF configures interrupt mapping and returns status.
402 * NOTE: due to hardware requirements, all active queues (both TX and RX)
403 * should be mapped to interrupts, even if the driver intends to operate
404 * only in polling mode. In this case the interrupt may be disabled, but
405 * the ITR timer will still run to trigger writebacks.
407 struct virtchnl_vector_map {
416 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_vector_map);
418 struct virtchnl_irq_map_info {
420 struct virtchnl_vector_map vecmap[1];
423 VIRTCHNL_CHECK_STRUCT_LEN(14, virtchnl_irq_map_info);
425 /* VIRTCHNL_OP_ENABLE_QUEUES
426 * VIRTCHNL_OP_DISABLE_QUEUES
427 * VF sends these message to enable or disable TX/RX queue pairs.
428 * The queues fields are bitmaps indicating which queues to act upon.
429 * (Currently, we only support 16 queues per VF, but we make the field
430 * u32 to allow for expansion.)
431 * PF performs requested action and returns status.
432 * NOTE: The VF is not required to enable/disable all queues in a single
433 * request. It may send multiple messages.
434 * PF drivers must correctly handle all VF requests.
436 struct virtchnl_queue_select {
443 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_queue_select);
445 /* VIRTCHNL_OP_ADD_ETH_ADDR
446 * VF sends this message in order to add one or more unicast or multicast
447 * address filters for the specified VSI.
448 * PF adds the filters and returns status.
451 /* VIRTCHNL_OP_DEL_ETH_ADDR
452 * VF sends this message in order to remove one or more unicast or multicast
453 * filters for the specified VSI.
454 * PF removes the filters and returns status.
457 /* VIRTCHNL_ETHER_ADDR_LEGACY
458 * Prior to adding the @type member to virtchnl_ether_addr, there were 2 pad
459 * bytes. Moving forward all VF drivers should not set type to
460 * VIRTCHNL_ETHER_ADDR_LEGACY. This is only here to not break previous/legacy
461 * behavior. The control plane function (i.e. PF) can use a best effort method
462 * of tracking the primary/device unicast in this case, but there is no
463 * guarantee and functionality depends on the implementation of the PF.
466 /* VIRTCHNL_ETHER_ADDR_PRIMARY
467 * All VF drivers should set @type to VIRTCHNL_ETHER_ADDR_PRIMARY for the
468 * primary/device unicast MAC address filter for VIRTCHNL_OP_ADD_ETH_ADDR and
469 * VIRTCHNL_OP_DEL_ETH_ADDR. This allows for the underlying control plane
470 * function (i.e. PF) to accurately track and use this MAC address for
471 * displaying on the host and for VM/function reset.
474 /* VIRTCHNL_ETHER_ADDR_EXTRA
475 * All VF drivers should set @type to VIRTCHNL_ETHER_ADDR_EXTRA for any extra
476 * unicast and/or multicast filters that are being added/deleted via
477 * VIRTCHNL_OP_DEL_ETH_ADDR/VIRTCHNL_OP_ADD_ETH_ADDR respectively.
479 struct virtchnl_ether_addr {
480 u8 addr[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
482 #define VIRTCHNL_ETHER_ADDR_LEGACY 0
483 #define VIRTCHNL_ETHER_ADDR_PRIMARY 1
484 #define VIRTCHNL_ETHER_ADDR_EXTRA 2
485 #define VIRTCHNL_ETHER_ADDR_TYPE_MASK 3 /* first two bits of type are valid */
489 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_ether_addr);
491 struct virtchnl_ether_addr_list {
494 struct virtchnl_ether_addr list[1];
497 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_ether_addr_list);
499 /* VIRTCHNL_OP_ADD_VLAN
500 * VF sends this message to add one or more VLAN tag filters for receives.
501 * PF adds the filters and returns status.
502 * If a port VLAN is configured by the PF, this operation will return an
506 /* VIRTCHNL_OP_DEL_VLAN
507 * VF sends this message to remove one or more VLAN tag filters for receives.
508 * PF removes the filters and returns status.
509 * If a port VLAN is configured by the PF, this operation will return an
513 struct virtchnl_vlan_filter_list {
519 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_vlan_filter_list);
521 /* VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE
522 * VF sends VSI id and flags.
523 * PF returns status code in retval.
524 * Note: we assume that broadcast accept mode is always enabled.
526 struct virtchnl_promisc_info {
531 VIRTCHNL_CHECK_STRUCT_LEN(4, virtchnl_promisc_info);
533 #define FLAG_VF_UNICAST_PROMISC 0x00000001
534 #define FLAG_VF_MULTICAST_PROMISC 0x00000002
536 /* VIRTCHNL_OP_GET_STATS
537 * VF sends this message to request stats for the selected VSI. VF uses
538 * the virtchnl_queue_select struct to specify the VSI. The queue_id
539 * field is ignored by the PF.
541 * PF replies with struct virtchnl_eth_stats in an external buffer.
544 struct virtchnl_eth_stats {
545 u64 rx_bytes; /* received bytes */
546 u64 rx_unicast; /* received unicast pkts */
547 u64 rx_multicast; /* received multicast pkts */
548 u64 rx_broadcast; /* received broadcast pkts */
550 u64 rx_unknown_protocol;
551 u64 tx_bytes; /* transmitted bytes */
552 u64 tx_unicast; /* transmitted unicast pkts */
553 u64 tx_multicast; /* transmitted multicast pkts */
554 u64 tx_broadcast; /* transmitted broadcast pkts */
559 /* VIRTCHNL_OP_CONFIG_RSS_KEY
560 * VIRTCHNL_OP_CONFIG_RSS_LUT
561 * VF sends these messages to configure RSS. Only supported if both PF
562 * and VF drivers set the VIRTCHNL_VF_OFFLOAD_RSS_PF bit during
563 * configuration negotiation. If this is the case, then the RSS fields in
564 * the VF resource struct are valid.
565 * Both the key and LUT are initialized to 0 by the PF, meaning that
566 * RSS is effectively disabled until set up by the VF.
568 struct virtchnl_rss_key {
571 u8 key[1]; /* RSS hash key, packed bytes */
574 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_key);
576 struct virtchnl_rss_lut {
579 u8 lut[1]; /* RSS lookup table */
582 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_lut);
584 /* VIRTCHNL_OP_GET_RSS_HENA_CAPS
585 * VIRTCHNL_OP_SET_RSS_HENA
586 * VF sends these messages to get and set the hash filter enable bits for RSS.
587 * By default, the PF sets these to all possible traffic types that the
588 * hardware supports. The VF can query this value if it wants to change the
589 * traffic types that are hashed by the hardware.
591 struct virtchnl_rss_hena {
595 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_rss_hena);
597 /* This is used by PF driver to enforce how many channels can be supported.
598 * When ADQ_V2 capability is negotiated, it will allow 16 channels otherwise
599 * PF driver will allow only max 4 channels
601 #define VIRTCHNL_MAX_ADQ_CHANNELS 4
602 #define VIRTCHNL_MAX_ADQ_V2_CHANNELS 16
604 /* VIRTCHNL_OP_ENABLE_CHANNELS
605 * VIRTCHNL_OP_DISABLE_CHANNELS
606 * VF sends these messages to enable or disable channels based on
607 * the user specified queue count and queue offset for each traffic class.
608 * This struct encompasses all the information that the PF needs from
609 * VF to create a channel.
611 struct virtchnl_channel_info {
612 u16 count; /* number of queues in a channel */
613 u16 offset; /* queues in a channel start from 'offset' */
618 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_channel_info);
620 struct virtchnl_tc_info {
623 struct virtchnl_channel_info list[1];
626 VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_tc_info);
628 /* VIRTCHNL_ADD_CLOUD_FILTER
629 * VIRTCHNL_DEL_CLOUD_FILTER
630 * VF sends these messages to add or delete a cloud filter based on the
631 * user specified match and action filters. These structures encompass
632 * all the information that the PF needs from the VF to add/delete a
636 struct virtchnl_l4_spec {
637 u8 src_mac[ETH_ALEN];
638 u8 dst_mac[ETH_ALEN];
639 /* vlan_prio is part of this 16 bit field even from OS perspective
640 * vlan_id:12 is actual vlan_id, then vlanid:bit14..12 is vlan_prio
641 * in future, when decided to offload vlan_prio, pass that information
642 * as part of the "vlan_id" field, Bit14..12
645 __be16 pad; /* reserved for future use */
652 VIRTCHNL_CHECK_STRUCT_LEN(52, virtchnl_l4_spec);
654 union virtchnl_flow_spec {
655 struct virtchnl_l4_spec tcp_spec;
656 u8 buffer[128]; /* reserved for future use */
659 VIRTCHNL_CHECK_UNION_LEN(128, virtchnl_flow_spec);
661 enum virtchnl_action {
663 VIRTCHNL_ACTION_DROP = 0,
664 VIRTCHNL_ACTION_TC_REDIRECT,
665 VIRTCHNL_ACTION_PASSTHRU,
666 VIRTCHNL_ACTION_QUEUE,
667 VIRTCHNL_ACTION_Q_REGION,
668 VIRTCHNL_ACTION_MARK,
669 VIRTCHNL_ACTION_COUNT,
672 enum virtchnl_flow_type {
674 VIRTCHNL_TCP_V4_FLOW = 0,
675 VIRTCHNL_TCP_V6_FLOW,
676 VIRTCHNL_UDP_V4_FLOW,
677 VIRTCHNL_UDP_V6_FLOW,
680 struct virtchnl_filter {
681 union virtchnl_flow_spec data;
682 union virtchnl_flow_spec mask;
683 enum virtchnl_flow_type flow_type;
684 enum virtchnl_action action;
689 VIRTCHNL_CHECK_STRUCT_LEN(272, virtchnl_filter);
692 * PF sends this message to inform the VF driver of events that may affect it.
693 * No direct response is expected from the VF, though it may generate other
694 * messages in response to this one.
696 enum virtchnl_event_codes {
697 VIRTCHNL_EVENT_UNKNOWN = 0,
698 VIRTCHNL_EVENT_LINK_CHANGE,
699 VIRTCHNL_EVENT_RESET_IMPENDING,
700 VIRTCHNL_EVENT_PF_DRIVER_CLOSE,
703 #define PF_EVENT_SEVERITY_INFO 0
704 #define PF_EVENT_SEVERITY_ATTENTION 1
705 #define PF_EVENT_SEVERITY_ACTION_REQUIRED 2
706 #define PF_EVENT_SEVERITY_CERTAIN_DOOM 255
708 struct virtchnl_pf_event {
709 enum virtchnl_event_codes event;
711 /* If the PF driver does not support the new speed reporting
712 * capabilities then use link_event else use link_event_adv to
713 * get the speed and link information. The ability to understand
714 * new speeds is indicated by setting the capability flag
715 * VIRTCHNL_VF_CAP_ADV_LINK_SPEED in vf_cap_flags parameter
716 * in virtchnl_vf_resource struct and can be used to determine
717 * which link event struct to use below.
720 enum virtchnl_link_speed link_speed;
724 /* link_speed provided in Mbps */
733 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_pf_event);
735 /* Since VF messages are limited by u16 size, precalculate the maximum possible
736 * values of nested elements in virtchnl structures that virtual channel can
737 * possibly handle in a single message.
739 enum virtchnl_vector_limits {
740 VIRTCHNL_OP_CONFIG_VSI_QUEUES_MAX =
741 ((u16)(~0) - sizeof(struct virtchnl_vsi_queue_config_info)) /
742 sizeof(struct virtchnl_queue_pair_info),
744 VIRTCHNL_OP_CONFIG_IRQ_MAP_MAX =
745 ((u16)(~0) - sizeof(struct virtchnl_irq_map_info)) /
746 sizeof(struct virtchnl_vector_map),
748 VIRTCHNL_OP_ADD_DEL_ETH_ADDR_MAX =
749 ((u16)(~0) - sizeof(struct virtchnl_ether_addr_list)) /
750 sizeof(struct virtchnl_ether_addr),
752 VIRTCHNL_OP_ADD_DEL_VLAN_MAX =
753 ((u16)(~0) - sizeof(struct virtchnl_vlan_filter_list)) /
756 VIRTCHNL_OP_ENABLE_CHANNELS_MAX =
757 ((u16)(~0) - sizeof(struct virtchnl_tc_info)) /
758 sizeof(struct virtchnl_channel_info),
761 /* VF reset states - these are written into the RSTAT register:
762 * VFGEN_RSTAT on the VF
763 * When the PF initiates a reset, it writes 0
764 * When the reset is complete, it writes 1
765 * When the PF detects that the VF has recovered, it writes 2
766 * VF checks this register periodically to determine if a reset has occurred,
767 * then polls it to know when the reset is complete.
768 * If either the PF or VF reads the register while the hardware
769 * is in a reset state, it will return DEADBEEF, which, when masked
772 enum virtchnl_vfr_states {
773 VIRTCHNL_VFR_INPROGRESS = 0,
774 VIRTCHNL_VFR_COMPLETED,
775 VIRTCHNL_VFR_VFACTIVE,
779 * virtchnl_vc_validate_vf_msg
780 * @ver: Virtchnl version info
781 * @v_opcode: Opcode for the message
782 * @msg: pointer to the msg buffer
783 * @msglen: msg length
785 * validate msg format against struct for each opcode
788 virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode,
791 bool err_msg_format = false;
794 /* Validate message length. */
796 case VIRTCHNL_OP_VERSION:
797 valid_len = sizeof(struct virtchnl_version_info);
799 case VIRTCHNL_OP_RESET_VF:
801 case VIRTCHNL_OP_GET_VF_RESOURCES:
803 valid_len = sizeof(u32);
805 case VIRTCHNL_OP_CONFIG_TX_QUEUE:
806 valid_len = sizeof(struct virtchnl_txq_info);
808 case VIRTCHNL_OP_CONFIG_RX_QUEUE:
809 valid_len = sizeof(struct virtchnl_rxq_info);
811 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
812 valid_len = sizeof(struct virtchnl_vsi_queue_config_info);
813 if (msglen >= valid_len) {
814 struct virtchnl_vsi_queue_config_info *vqc =
815 (struct virtchnl_vsi_queue_config_info *)msg;
817 if (vqc->num_queue_pairs == 0 || vqc->num_queue_pairs >
818 VIRTCHNL_OP_CONFIG_VSI_QUEUES_MAX) {
819 err_msg_format = true;
823 valid_len += (vqc->num_queue_pairs *
825 virtchnl_queue_pair_info));
828 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
829 valid_len = sizeof(struct virtchnl_irq_map_info);
830 if (msglen >= valid_len) {
831 struct virtchnl_irq_map_info *vimi =
832 (struct virtchnl_irq_map_info *)msg;
834 if (vimi->num_vectors == 0 || vimi->num_vectors >
835 VIRTCHNL_OP_CONFIG_IRQ_MAP_MAX) {
836 err_msg_format = true;
840 valid_len += (vimi->num_vectors *
841 sizeof(struct virtchnl_vector_map));
844 case VIRTCHNL_OP_ENABLE_QUEUES:
845 case VIRTCHNL_OP_DISABLE_QUEUES:
846 valid_len = sizeof(struct virtchnl_queue_select);
848 case VIRTCHNL_OP_ADD_ETH_ADDR:
849 case VIRTCHNL_OP_DEL_ETH_ADDR:
850 valid_len = sizeof(struct virtchnl_ether_addr_list);
851 if (msglen >= valid_len) {
852 struct virtchnl_ether_addr_list *veal =
853 (struct virtchnl_ether_addr_list *)msg;
855 if (veal->num_elements == 0 || veal->num_elements >
856 VIRTCHNL_OP_ADD_DEL_ETH_ADDR_MAX) {
857 err_msg_format = true;
861 valid_len += veal->num_elements *
862 sizeof(struct virtchnl_ether_addr);
865 case VIRTCHNL_OP_ADD_VLAN:
866 case VIRTCHNL_OP_DEL_VLAN:
867 valid_len = sizeof(struct virtchnl_vlan_filter_list);
868 if (msglen >= valid_len) {
869 struct virtchnl_vlan_filter_list *vfl =
870 (struct virtchnl_vlan_filter_list *)msg;
872 if (vfl->num_elements == 0 || vfl->num_elements >
873 VIRTCHNL_OP_ADD_DEL_VLAN_MAX) {
874 err_msg_format = true;
878 valid_len += vfl->num_elements * sizeof(u16);
881 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
882 valid_len = sizeof(struct virtchnl_promisc_info);
884 case VIRTCHNL_OP_GET_STATS:
885 valid_len = sizeof(struct virtchnl_queue_select);
887 case VIRTCHNL_OP_CONFIG_RSS_KEY:
888 valid_len = sizeof(struct virtchnl_rss_key);
889 if (msglen >= valid_len) {
890 struct virtchnl_rss_key *vrk =
891 (struct virtchnl_rss_key *)msg;
893 if (vrk->key_len == 0) {
894 /* zero length is allowed as input */
898 valid_len += vrk->key_len - 1;
901 case VIRTCHNL_OP_CONFIG_RSS_LUT:
902 valid_len = sizeof(struct virtchnl_rss_lut);
903 if (msglen >= valid_len) {
904 struct virtchnl_rss_lut *vrl =
905 (struct virtchnl_rss_lut *)msg;
907 if (vrl->lut_entries == 0) {
908 /* zero entries is allowed as input */
912 valid_len += vrl->lut_entries - 1;
915 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
917 case VIRTCHNL_OP_SET_RSS_HENA:
918 valid_len = sizeof(struct virtchnl_rss_hena);
920 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
921 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
923 case VIRTCHNL_OP_REQUEST_QUEUES:
924 valid_len = sizeof(struct virtchnl_vf_res_request);
926 case VIRTCHNL_OP_ENABLE_CHANNELS:
927 valid_len = sizeof(struct virtchnl_tc_info);
928 if (msglen >= valid_len) {
929 struct virtchnl_tc_info *vti =
930 (struct virtchnl_tc_info *)msg;
932 if (vti->num_tc == 0 || vti->num_tc >
933 VIRTCHNL_OP_ENABLE_CHANNELS_MAX) {
934 err_msg_format = true;
938 valid_len += (vti->num_tc - 1) *
939 sizeof(struct virtchnl_channel_info);
942 case VIRTCHNL_OP_DISABLE_CHANNELS:
944 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
945 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
946 valid_len = sizeof(struct virtchnl_filter);
948 /* These are always errors coming from the VF. */
949 case VIRTCHNL_OP_EVENT:
950 case VIRTCHNL_OP_UNKNOWN:
952 return VIRTCHNL_STATUS_ERR_PARAM;
954 /* few more checks */
955 if (err_msg_format || valid_len != msglen)
956 return VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH;
960 #endif /* _VIRTCHNL_H_ */