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
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13 * documentation and/or other materials provided with the distribution.
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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 /* opcodes 34, 35, 36, 37 and 38 are reserved */
160 /* opcodes 39, 40, 41 and 42 are reserved */
161 /* opcode 42 is reserved */
164 /* These macros are used to generate compilation errors if a structure/union
165 * is not exactly the correct length. It gives a divide by zero error if the
166 * structure/union is not of the correct size, otherwise it creates an enum
167 * that is never used.
169 #define VIRTCHNL_CHECK_STRUCT_LEN(n, X) enum virtchnl_static_assert_enum_##X \
170 { virtchnl_static_assert_##X = (n)/((sizeof(struct X) == (n)) ? 1 : 0) }
171 #define VIRTCHNL_CHECK_UNION_LEN(n, X) enum virtchnl_static_asset_enum_##X \
172 { virtchnl_static_assert_##X = (n)/((sizeof(union X) == (n)) ? 1 : 0) }
174 /* Virtual channel message descriptor. This overlays the admin queue
175 * descriptor. All other data is passed in external buffers.
178 struct virtchnl_msg {
179 u8 pad[8]; /* AQ flags/opcode/len/retval fields */
180 enum virtchnl_ops v_opcode; /* avoid confusion with desc->opcode */
181 enum virtchnl_status_code v_retval; /* ditto for desc->retval */
182 u32 vfid; /* used by PF when sending to VF */
185 VIRTCHNL_CHECK_STRUCT_LEN(20, virtchnl_msg);
187 /* Message descriptions and data structures. */
189 /* VIRTCHNL_OP_VERSION
190 * VF posts its version number to the PF. PF responds with its version number
191 * in the same format, along with a return code.
192 * Reply from PF has its major/minor versions also in param0 and param1.
193 * If there is a major version mismatch, then the VF cannot operate.
194 * If there is a minor version mismatch, then the VF can operate but should
195 * add a warning to the system log.
197 * This enum element MUST always be specified as == 1, regardless of other
198 * changes in the API. The PF must always respond to this message without
199 * error regardless of version mismatch.
201 #define VIRTCHNL_VERSION_MAJOR 1
202 #define VIRTCHNL_VERSION_MINOR 1
203 #define VIRTCHNL_VERSION_MINOR_NO_VF_CAPS 0
205 struct virtchnl_version_info {
210 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_version_info);
212 #define VF_IS_V10(_v) (((_v)->major == 1) && ((_v)->minor == 0))
213 #define VF_IS_V11(_ver) (((_ver)->major == 1) && ((_ver)->minor == 1))
215 /* VIRTCHNL_OP_RESET_VF
216 * VF sends this request to PF with no parameters
217 * PF does NOT respond! VF driver must delay then poll VFGEN_RSTAT register
218 * until reset completion is indicated. The admin queue must be reinitialized
219 * after this operation.
221 * When reset is complete, PF must ensure that all queues in all VSIs associated
222 * with the VF are stopped, all queue configurations in the HMC are set to 0,
223 * and all MAC and VLAN filters (except the default MAC address) on all VSIs
227 /* VSI types that use VIRTCHNL interface for VF-PF communication. VSI_SRIOV
228 * vsi_type should always be 6 for backward compatibility. Add other fields
231 enum virtchnl_vsi_type {
232 VIRTCHNL_VSI_TYPE_INVALID = 0,
233 VIRTCHNL_VSI_SRIOV = 6,
236 /* VIRTCHNL_OP_GET_VF_RESOURCES
237 * Version 1.0 VF sends this request to PF with no parameters
238 * Version 1.1 VF sends this request to PF with u32 bitmap of its capabilities
239 * PF responds with an indirect message containing
240 * virtchnl_vf_resource and one or more
241 * virtchnl_vsi_resource structures.
244 struct virtchnl_vsi_resource {
247 enum virtchnl_vsi_type vsi_type;
249 u8 default_mac_addr[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
252 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);
254 /* VF capability flags
255 * VIRTCHNL_VF_OFFLOAD_L2 flag is inclusive of base mode L2 offloads including
256 * TX/RX Checksum offloading and TSO for non-tunnelled packets.
258 #define VIRTCHNL_VF_OFFLOAD_L2 0x00000001
259 #define VIRTCHNL_VF_OFFLOAD_IWARP 0x00000002
260 #define VIRTCHNL_VF_OFFLOAD_RSVD 0x00000004
261 #define VIRTCHNL_VF_OFFLOAD_RSS_AQ 0x00000008
262 #define VIRTCHNL_VF_OFFLOAD_RSS_REG 0x00000010
263 #define VIRTCHNL_VF_OFFLOAD_WB_ON_ITR 0x00000020
264 #define VIRTCHNL_VF_OFFLOAD_REQ_QUEUES 0x00000040
265 #define VIRTCHNL_VF_OFFLOAD_CRC 0x00000080
266 #define VIRTCHNL_VF_OFFLOAD_VLAN 0x00010000
267 #define VIRTCHNL_VF_OFFLOAD_RX_POLLING 0x00020000
268 #define VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2 0x00040000
269 #define VIRTCHNL_VF_OFFLOAD_RSS_PF 0X00080000
270 #define VIRTCHNL_VF_OFFLOAD_ENCAP 0X00100000
271 #define VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM 0X00200000
272 #define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM 0X00400000
273 #define VIRTCHNL_VF_OFFLOAD_ADQ 0X00800000
274 #define VIRTCHNL_VF_OFFLOAD_ADQ_V2 0X01000000
275 #define VIRTCHNL_VF_OFFLOAD_USO 0X02000000
276 /* 0X40000000 is reserved */
277 /* 0X80000000 is reserved */
279 /* Define below the capability flags that are not offloads */
280 #define VIRTCHNL_VF_CAP_ADV_LINK_SPEED 0x00000080
281 #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \
282 VIRTCHNL_VF_OFFLOAD_VLAN | \
283 VIRTCHNL_VF_OFFLOAD_RSS_PF)
285 struct virtchnl_vf_resource {
295 struct virtchnl_vsi_resource vsi_res[1];
298 VIRTCHNL_CHECK_STRUCT_LEN(36, virtchnl_vf_resource);
300 /* VIRTCHNL_OP_CONFIG_TX_QUEUE
301 * VF sends this message to set up parameters for one TX queue.
302 * External data buffer contains one instance of virtchnl_txq_info.
303 * PF configures requested queue and returns a status code.
306 /* Tx queue config info */
307 struct virtchnl_txq_info {
310 u16 ring_len; /* number of descriptors, multiple of 8 */
311 u16 headwb_enabled; /* deprecated with AVF 1.0 */
313 u64 dma_headwb_addr; /* deprecated with AVF 1.0 */
316 VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_txq_info);
318 /* VIRTCHNL_OP_CONFIG_RX_QUEUE
319 * VF sends this message to set up parameters for one RX queue.
320 * External data buffer contains one instance of virtchnl_rxq_info.
321 * PF configures requested queue and returns a status code. The
322 * crc_disable flag disables CRC stripping on the VF. Setting
323 * the crc_disable flag to 1 will disable CRC stripping for each
324 * queue in the VF where the flag is set. The VIRTCHNL_VF_OFFLOAD_CRC
325 * offload must have been set prior to sending this info or the PF
326 * will ignore the request. This flag should be set the same for
327 * all of the queues for a VF.
330 /* Rx queue config info */
331 struct virtchnl_rxq_info {
334 u32 ring_len; /* number of descriptors, multiple of 32 */
336 u16 splithdr_enabled; /* deprecated with AVF 1.0 */
342 enum virtchnl_rx_hsplit rx_split_pos; /* deprecated with AVF 1.0 */
346 VIRTCHNL_CHECK_STRUCT_LEN(40, virtchnl_rxq_info);
348 /* VIRTCHNL_OP_CONFIG_VSI_QUEUES
349 * VF sends this message to set parameters for active TX and RX queues
350 * associated with the specified VSI.
351 * PF configures queues and returns status.
352 * If the number of queues specified is greater than the number of queues
353 * associated with the VSI, an error is returned and no queues are configured.
354 * NOTE: The VF is not required to configure all queues in a single request.
355 * It may send multiple messages. PF drivers must correctly handle all VF
358 struct virtchnl_queue_pair_info {
359 /* NOTE: vsi_id and queue_id should be identical for both queues. */
360 struct virtchnl_txq_info txq;
361 struct virtchnl_rxq_info rxq;
364 VIRTCHNL_CHECK_STRUCT_LEN(64, virtchnl_queue_pair_info);
366 struct virtchnl_vsi_queue_config_info {
370 struct virtchnl_queue_pair_info qpair[1];
373 VIRTCHNL_CHECK_STRUCT_LEN(72, virtchnl_vsi_queue_config_info);
375 /* VIRTCHNL_OP_REQUEST_QUEUES
376 * VF sends this message to request the PF to allocate additional queues to
377 * this VF. Each VF gets a guaranteed number of queues on init but asking for
378 * additional queues must be negotiated. This is a best effort request as it
379 * is possible the PF does not have enough queues left to support the request.
380 * If the PF cannot support the number requested it will respond with the
381 * maximum number it is able to support. If the request is successful, PF will
382 * then reset the VF to institute required changes.
385 /* VF resource request */
386 struct virtchnl_vf_res_request {
390 /* VIRTCHNL_OP_CONFIG_IRQ_MAP
391 * VF uses this message to map vectors to queues.
392 * The rxq_map and txq_map fields are bitmaps used to indicate which queues
393 * are to be associated with the specified vector.
394 * The "other" causes are always mapped to vector 0. The VF may not request
395 * that vector 0 be used for traffic.
396 * PF configures interrupt mapping and returns status.
397 * NOTE: due to hardware requirements, all active queues (both TX and RX)
398 * should be mapped to interrupts, even if the driver intends to operate
399 * only in polling mode. In this case the interrupt may be disabled, but
400 * the ITR timer will still run to trigger writebacks.
402 struct virtchnl_vector_map {
411 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_vector_map);
413 struct virtchnl_irq_map_info {
415 struct virtchnl_vector_map vecmap[1];
418 VIRTCHNL_CHECK_STRUCT_LEN(14, virtchnl_irq_map_info);
420 /* VIRTCHNL_OP_ENABLE_QUEUES
421 * VIRTCHNL_OP_DISABLE_QUEUES
422 * VF sends these message to enable or disable TX/RX queue pairs.
423 * The queues fields are bitmaps indicating which queues to act upon.
424 * (Currently, we only support 16 queues per VF, but we make the field
425 * u32 to allow for expansion.)
426 * PF performs requested action and returns status.
427 * NOTE: The VF is not required to enable/disable all queues in a single
428 * request. It may send multiple messages.
429 * PF drivers must correctly handle all VF requests.
431 struct virtchnl_queue_select {
438 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_queue_select);
440 /* VIRTCHNL_OP_ADD_ETH_ADDR
441 * VF sends this message in order to add one or more unicast or multicast
442 * address filters for the specified VSI.
443 * PF adds the filters and returns status.
446 /* VIRTCHNL_OP_DEL_ETH_ADDR
447 * VF sends this message in order to remove one or more unicast or multicast
448 * filters for the specified VSI.
449 * PF removes the filters and returns status.
452 struct virtchnl_ether_addr {
453 u8 addr[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
457 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_ether_addr);
459 struct virtchnl_ether_addr_list {
462 struct virtchnl_ether_addr list[1];
465 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_ether_addr_list);
467 /* VIRTCHNL_OP_ADD_VLAN
468 * VF sends this message to add one or more VLAN tag filters for receives.
469 * PF adds the filters and returns status.
470 * If a port VLAN is configured by the PF, this operation will return an
474 /* VIRTCHNL_OP_DEL_VLAN
475 * VF sends this message to remove one or more VLAN tag filters for receives.
476 * PF removes the filters and returns status.
477 * If a port VLAN is configured by the PF, this operation will return an
481 struct virtchnl_vlan_filter_list {
487 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_vlan_filter_list);
489 /* VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE
490 * VF sends VSI id and flags.
491 * PF returns status code in retval.
492 * Note: we assume that broadcast accept mode is always enabled.
494 struct virtchnl_promisc_info {
499 VIRTCHNL_CHECK_STRUCT_LEN(4, virtchnl_promisc_info);
501 #define FLAG_VF_UNICAST_PROMISC 0x00000001
502 #define FLAG_VF_MULTICAST_PROMISC 0x00000002
504 /* VIRTCHNL_OP_GET_STATS
505 * VF sends this message to request stats for the selected VSI. VF uses
506 * the virtchnl_queue_select struct to specify the VSI. The queue_id
507 * field is ignored by the PF.
509 * PF replies with struct virtchnl_eth_stats in an external buffer.
512 struct virtchnl_eth_stats {
513 u64 rx_bytes; /* received bytes */
514 u64 rx_unicast; /* received unicast pkts */
515 u64 rx_multicast; /* received multicast pkts */
516 u64 rx_broadcast; /* received broadcast pkts */
518 u64 rx_unknown_protocol;
519 u64 tx_bytes; /* transmitted bytes */
520 u64 tx_unicast; /* transmitted unicast pkts */
521 u64 tx_multicast; /* transmitted multicast pkts */
522 u64 tx_broadcast; /* transmitted broadcast pkts */
527 /* VIRTCHNL_OP_CONFIG_RSS_KEY
528 * VIRTCHNL_OP_CONFIG_RSS_LUT
529 * VF sends these messages to configure RSS. Only supported if both PF
530 * and VF drivers set the VIRTCHNL_VF_OFFLOAD_RSS_PF bit during
531 * configuration negotiation. If this is the case, then the RSS fields in
532 * the VF resource struct are valid.
533 * Both the key and LUT are initialized to 0 by the PF, meaning that
534 * RSS is effectively disabled until set up by the VF.
536 struct virtchnl_rss_key {
539 u8 key[1]; /* RSS hash key, packed bytes */
542 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_key);
544 struct virtchnl_rss_lut {
547 u8 lut[1]; /* RSS lookup table */
550 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_lut);
552 /* VIRTCHNL_OP_GET_RSS_HENA_CAPS
553 * VIRTCHNL_OP_SET_RSS_HENA
554 * VF sends these messages to get and set the hash filter enable bits for RSS.
555 * By default, the PF sets these to all possible traffic types that the
556 * hardware supports. The VF can query this value if it wants to change the
557 * traffic types that are hashed by the hardware.
559 struct virtchnl_rss_hena {
563 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_rss_hena);
565 /* This is used by PF driver to enforce how many channels can be supported.
566 * When ADQ_V2 capability is negotiated, it will allow 16 channels otherwise
567 * PF driver will allow only max 4 channels
569 #define VIRTCHNL_MAX_ADQ_CHANNELS 4
570 #define VIRTCHNL_MAX_ADQ_V2_CHANNELS 16
572 /* VIRTCHNL_OP_ENABLE_CHANNELS
573 * VIRTCHNL_OP_DISABLE_CHANNELS
574 * VF sends these messages to enable or disable channels based on
575 * the user specified queue count and queue offset for each traffic class.
576 * This struct encompasses all the information that the PF needs from
577 * VF to create a channel.
579 struct virtchnl_channel_info {
580 u16 count; /* number of queues in a channel */
581 u16 offset; /* queues in a channel start from 'offset' */
586 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_channel_info);
588 struct virtchnl_tc_info {
591 struct virtchnl_channel_info list[1];
594 VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_tc_info);
596 /* VIRTCHNL_ADD_CLOUD_FILTER
597 * VIRTCHNL_DEL_CLOUD_FILTER
598 * VF sends these messages to add or delete a cloud filter based on the
599 * user specified match and action filters. These structures encompass
600 * all the information that the PF needs from the VF to add/delete a
604 struct virtchnl_l4_spec {
605 u8 src_mac[ETH_ALEN];
606 u8 dst_mac[ETH_ALEN];
607 /* vlan_prio is part of this 16 bit field even from OS perspective
608 * vlan_id:12 is actual vlan_id, then vlanid:bit14..12 is vlan_prio
609 * in future, when decided to offload vlan_prio, pass that information
610 * as part of the "vlan_id" field, Bit14..12
613 __be16 pad; /* reserved for future use */
620 VIRTCHNL_CHECK_STRUCT_LEN(52, virtchnl_l4_spec);
622 union virtchnl_flow_spec {
623 struct virtchnl_l4_spec tcp_spec;
624 u8 buffer[128]; /* reserved for future use */
627 VIRTCHNL_CHECK_UNION_LEN(128, virtchnl_flow_spec);
629 enum virtchnl_action {
631 VIRTCHNL_ACTION_DROP = 0,
632 VIRTCHNL_ACTION_TC_REDIRECT,
635 enum virtchnl_flow_type {
637 VIRTCHNL_TCP_V4_FLOW = 0,
638 VIRTCHNL_TCP_V6_FLOW,
639 VIRTCHNL_UDP_V4_FLOW,
640 VIRTCHNL_UDP_V6_FLOW,
643 struct virtchnl_filter {
644 union virtchnl_flow_spec data;
645 union virtchnl_flow_spec mask;
646 enum virtchnl_flow_type flow_type;
647 enum virtchnl_action action;
652 VIRTCHNL_CHECK_STRUCT_LEN(272, virtchnl_filter);
655 * PF sends this message to inform the VF driver of events that may affect it.
656 * No direct response is expected from the VF, though it may generate other
657 * messages in response to this one.
659 enum virtchnl_event_codes {
660 VIRTCHNL_EVENT_UNKNOWN = 0,
661 VIRTCHNL_EVENT_LINK_CHANGE,
662 VIRTCHNL_EVENT_RESET_IMPENDING,
663 VIRTCHNL_EVENT_PF_DRIVER_CLOSE,
666 #define PF_EVENT_SEVERITY_INFO 0
667 #define PF_EVENT_SEVERITY_ATTENTION 1
668 #define PF_EVENT_SEVERITY_ACTION_REQUIRED 2
669 #define PF_EVENT_SEVERITY_CERTAIN_DOOM 255
671 struct virtchnl_pf_event {
672 enum virtchnl_event_codes event;
674 /* If the PF driver does not support the new speed reporting
675 * capabilities then use link_event else use link_event_adv to
676 * get the speed and link information. The ability to understand
677 * new speeds is indicated by setting the capability flag
678 * VIRTCHNL_VF_CAP_ADV_LINK_SPEED in vf_cap_flags parameter
679 * in virtchnl_vf_resource struct and can be used to determine
680 * which link event struct to use below.
683 enum virtchnl_link_speed link_speed;
687 /* link_speed provided in Mbps */
696 VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_pf_event);
698 /* Since VF messages are limited by u16 size, precalculate the maximum possible
699 * values of nested elements in virtchnl structures that virtual channel can
700 * possibly handle in a single message.
702 enum virtchnl_vector_limits {
703 VIRTCHNL_OP_CONFIG_VSI_QUEUES_MAX =
704 ((u16)(~0) - sizeof(struct virtchnl_vsi_queue_config_info)) /
705 sizeof(struct virtchnl_queue_pair_info),
707 VIRTCHNL_OP_CONFIG_IRQ_MAP_MAX =
708 ((u16)(~0) - sizeof(struct virtchnl_irq_map_info)) /
709 sizeof(struct virtchnl_vector_map),
711 VIRTCHNL_OP_ADD_DEL_ETH_ADDR_MAX =
712 ((u16)(~0) - sizeof(struct virtchnl_ether_addr_list)) /
713 sizeof(struct virtchnl_ether_addr),
715 VIRTCHNL_OP_ADD_DEL_VLAN_MAX =
716 ((u16)(~0) - sizeof(struct virtchnl_vlan_filter_list)) /
719 VIRTCHNL_OP_ENABLE_CHANNELS_MAX =
720 ((u16)(~0) - sizeof(struct virtchnl_tc_info)) /
721 sizeof(struct virtchnl_channel_info),
724 /* VF reset states - these are written into the RSTAT register:
725 * VFGEN_RSTAT on the VF
726 * When the PF initiates a reset, it writes 0
727 * When the reset is complete, it writes 1
728 * When the PF detects that the VF has recovered, it writes 2
729 * VF checks this register periodically to determine if a reset has occurred,
730 * then polls it to know when the reset is complete.
731 * If either the PF or VF reads the register while the hardware
732 * is in a reset state, it will return DEADBEEF, which, when masked
735 enum virtchnl_vfr_states {
736 VIRTCHNL_VFR_INPROGRESS = 0,
737 VIRTCHNL_VFR_COMPLETED,
738 VIRTCHNL_VFR_VFACTIVE,
742 * virtchnl_vc_validate_vf_msg
743 * @ver: Virtchnl version info
744 * @v_opcode: Opcode for the message
745 * @msg: pointer to the msg buffer
746 * @msglen: msg length
748 * validate msg format against struct for each opcode
751 virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode,
754 bool err_msg_format = false;
757 /* Validate message length. */
759 case VIRTCHNL_OP_VERSION:
760 valid_len = sizeof(struct virtchnl_version_info);
762 case VIRTCHNL_OP_RESET_VF:
764 case VIRTCHNL_OP_GET_VF_RESOURCES:
766 valid_len = sizeof(u32);
768 case VIRTCHNL_OP_CONFIG_TX_QUEUE:
769 valid_len = sizeof(struct virtchnl_txq_info);
771 case VIRTCHNL_OP_CONFIG_RX_QUEUE:
772 valid_len = sizeof(struct virtchnl_rxq_info);
774 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
775 valid_len = sizeof(struct virtchnl_vsi_queue_config_info);
776 if (msglen >= valid_len) {
777 struct virtchnl_vsi_queue_config_info *vqc =
778 (struct virtchnl_vsi_queue_config_info *)msg;
780 if (vqc->num_queue_pairs == 0 || vqc->num_queue_pairs >
781 VIRTCHNL_OP_CONFIG_VSI_QUEUES_MAX) {
782 err_msg_format = true;
786 valid_len += (vqc->num_queue_pairs *
788 virtchnl_queue_pair_info));
791 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
792 valid_len = sizeof(struct virtchnl_irq_map_info);
793 if (msglen >= valid_len) {
794 struct virtchnl_irq_map_info *vimi =
795 (struct virtchnl_irq_map_info *)msg;
797 if (vimi->num_vectors == 0 || vimi->num_vectors >
798 VIRTCHNL_OP_CONFIG_IRQ_MAP_MAX) {
799 err_msg_format = true;
803 valid_len += (vimi->num_vectors *
804 sizeof(struct virtchnl_vector_map));
807 case VIRTCHNL_OP_ENABLE_QUEUES:
808 case VIRTCHNL_OP_DISABLE_QUEUES:
809 valid_len = sizeof(struct virtchnl_queue_select);
811 case VIRTCHNL_OP_ADD_ETH_ADDR:
812 case VIRTCHNL_OP_DEL_ETH_ADDR:
813 valid_len = sizeof(struct virtchnl_ether_addr_list);
814 if (msglen >= valid_len) {
815 struct virtchnl_ether_addr_list *veal =
816 (struct virtchnl_ether_addr_list *)msg;
818 if (veal->num_elements == 0 || veal->num_elements >
819 VIRTCHNL_OP_ADD_DEL_ETH_ADDR_MAX) {
820 err_msg_format = true;
824 valid_len += veal->num_elements *
825 sizeof(struct virtchnl_ether_addr);
828 case VIRTCHNL_OP_ADD_VLAN:
829 case VIRTCHNL_OP_DEL_VLAN:
830 valid_len = sizeof(struct virtchnl_vlan_filter_list);
831 if (msglen >= valid_len) {
832 struct virtchnl_vlan_filter_list *vfl =
833 (struct virtchnl_vlan_filter_list *)msg;
835 if (vfl->num_elements == 0 || vfl->num_elements >
836 VIRTCHNL_OP_ADD_DEL_VLAN_MAX) {
837 err_msg_format = true;
841 valid_len += vfl->num_elements * sizeof(u16);
844 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
845 valid_len = sizeof(struct virtchnl_promisc_info);
847 case VIRTCHNL_OP_GET_STATS:
848 valid_len = sizeof(struct virtchnl_queue_select);
850 case VIRTCHNL_OP_CONFIG_RSS_KEY:
851 valid_len = sizeof(struct virtchnl_rss_key);
852 if (msglen >= valid_len) {
853 struct virtchnl_rss_key *vrk =
854 (struct virtchnl_rss_key *)msg;
856 if (vrk->key_len == 0) {
857 /* zero length is allowed as input */
861 valid_len += vrk->key_len - 1;
864 case VIRTCHNL_OP_CONFIG_RSS_LUT:
865 valid_len = sizeof(struct virtchnl_rss_lut);
866 if (msglen >= valid_len) {
867 struct virtchnl_rss_lut *vrl =
868 (struct virtchnl_rss_lut *)msg;
870 if (vrl->lut_entries == 0) {
871 /* zero entries is allowed as input */
875 valid_len += vrl->lut_entries - 1;
878 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
880 case VIRTCHNL_OP_SET_RSS_HENA:
881 valid_len = sizeof(struct virtchnl_rss_hena);
883 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
884 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
886 case VIRTCHNL_OP_REQUEST_QUEUES:
887 valid_len = sizeof(struct virtchnl_vf_res_request);
889 case VIRTCHNL_OP_ENABLE_CHANNELS:
890 valid_len = sizeof(struct virtchnl_tc_info);
891 if (msglen >= valid_len) {
892 struct virtchnl_tc_info *vti =
893 (struct virtchnl_tc_info *)msg;
895 if (vti->num_tc == 0 || vti->num_tc >
896 VIRTCHNL_OP_ENABLE_CHANNELS_MAX) {
897 err_msg_format = true;
901 valid_len += (vti->num_tc - 1) *
902 sizeof(struct virtchnl_channel_info);
905 case VIRTCHNL_OP_DISABLE_CHANNELS:
907 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
908 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
909 valid_len = sizeof(struct virtchnl_filter);
911 /* These are always errors coming from the VF. */
912 case VIRTCHNL_OP_EVENT:
913 case VIRTCHNL_OP_UNKNOWN:
915 return VIRTCHNL_STATUS_ERR_PARAM;
917 /* few more checks */
918 if (err_msg_format || valid_len != msglen)
919 return VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH;
923 #endif /* _VIRTCHNL_H_ */