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/* SPDX-License-Identifier: GPL-2.0-only / /****************************************************************************** * * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver * Copyright(c) 2013 - 2014 Intel Corporation. * * Contact Information: * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * *****************************************************************************/ #ifndef _VIRTCHNL_H_ #define _VIRTCHNL_H_ / Description: * This header file describes the VF-PF communication protocol used * by the drivers for all devices starting from our 40G product line * * Admin queue buffer usage: * desc->opcode is always aqc_opc_send_msg_to_pf * flags, retval, datalen, and data addr are all used normally. * The Firmware copies the cookie fields when sending messages between the * PF and VF, but uses all other fields internally. Due to this limitation, * we must send all messages as "indirect", i.e. using an external buffer. * * All the VSI indexes are relative to the VF. Each VF can have maximum of * three VSIs. All the queue indexes are relative to the VSI. Each VF can * have a maximum of sixteen queues for all of its VSIs. * * The PF is required to return a status code in v_retval for all messages * except RESET_VF, which does not require any response. The return value * is of status_code type, defined in the shared type.h. * * In general, VF driver initialization should roughly follow the order of * these opcodes. The VF driver must first validate the API version of the * PF driver, then request a reset, then get resources, then configure * queues and interrupts. After these operations are complete, the VF * driver may start its queues, optionally add MAC and VLAN filters, and * process traffic. / / START GENERIC DEFINES * Need to ensure the following enums and defines hold the same meaning and * value in current and future projects / / Error Codes / enum virtchnl_status_code { VIRTCHNL_STATUS_SUCCESS = 0, VIRTCHNL_STATUS_ERR_PARAM = -5, VIRTCHNL_STATUS_ERR_NO_MEMORY = -18, VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH = -38, VIRTCHNL_STATUS_ERR_CQP_COMPL_ERROR = -39, VIRTCHNL_STATUS_ERR_INVALID_VF_ID = -40, VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR = -53, VIRTCHNL_STATUS_ERR_NOT_SUPPORTED = -64, }; / Backward compatibility / #define VIRTCHNL_ERR_PARAM VIRTCHNL_STATUS_ERR_PARAM #define VIRTCHNL_STATUS_NOT_SUPPORTED VIRTCHNL_STATUS_ERR_NOT_SUPPORTED #define VIRTCHNL_LINK_SPEED_2_5GB_SHIFT 0x0 #define VIRTCHNL_LINK_SPEED_100MB_SHIFT 0x1 #define VIRTCHNL_LINK_SPEED_1000MB_SHIFT 0x2 #define VIRTCHNL_LINK_SPEED_10GB_SHIFT 0x3 #define VIRTCHNL_LINK_SPEED_40GB_SHIFT 0x4 #define VIRTCHNL_LINK_SPEED_20GB_SHIFT 0x5 #define VIRTCHNL_LINK_SPEED_25GB_SHIFT 0x6 #define VIRTCHNL_LINK_SPEED_5GB_SHIFT 0x7 enum virtchnl_link_speed { VIRTCHNL_LINK_SPEED_UNKNOWN = 0, VIRTCHNL_LINK_SPEED_100MB = BIT(VIRTCHNL_LINK_SPEED_100MB_SHIFT), VIRTCHNL_LINK_SPEED_1GB = BIT(VIRTCHNL_LINK_SPEED_1000MB_SHIFT), VIRTCHNL_LINK_SPEED_10GB = BIT(VIRTCHNL_LINK_SPEED_10GB_SHIFT), VIRTCHNL_LINK_SPEED_40GB = BIT(VIRTCHNL_LINK_SPEED_40GB_SHIFT), VIRTCHNL_LINK_SPEED_20GB = BIT(VIRTCHNL_LINK_SPEED_20GB_SHIFT), VIRTCHNL_LINK_SPEED_25GB = BIT(VIRTCHNL_LINK_SPEED_25GB_SHIFT), VIRTCHNL_LINK_SPEED_2_5GB = BIT(VIRTCHNL_LINK_SPEED_2_5GB_SHIFT), VIRTCHNL_LINK_SPEED_5GB = BIT(VIRTCHNL_LINK_SPEED_5GB_SHIFT), }; / for hsplit_0 field of Rx HMC context / / deprecated with AVF 1.0 / enum virtchnl_rx_hsplit { VIRTCHNL_RX_HSPLIT_NO_SPLIT = 0, VIRTCHNL_RX_HSPLIT_SPLIT_L2 = 1, VIRTCHNL_RX_HSPLIT_SPLIT_IP = 2, VIRTCHNL_RX_HSPLIT_SPLIT_TCP_UDP = 4, VIRTCHNL_RX_HSPLIT_SPLIT_SCTP = 8, }; / END GENERIC DEFINES / / Opcodes for VF-PF communication. These are placed in the v_opcode field * of the virtchnl_msg structure. / enum virtchnl_ops { / The PF sends status change events to VFs using * the VIRTCHNL_OP_EVENT opcode. * VFs send requests to the PF using the other ops. * Use of "advanced opcode" features must be negotiated as part of capabilities * exchange and are not considered part of base mode feature set. / VIRTCHNL_OP_UNKNOWN = 0, VIRTCHNL_OP_VERSION = 1, / must ALWAYS be 1 / VIRTCHNL_OP_RESET_VF = 2, VIRTCHNL_OP_GET_VF_RESOURCES = 3, VIRTCHNL_OP_CONFIG_TX_QUEUE = 4, VIRTCHNL_OP_CONFIG_RX_QUEUE = 5, VIRTCHNL_OP_CONFIG_VSI_QUEUES = 6, VIRTCHNL_OP_CONFIG_IRQ_MAP = 7, VIRTCHNL_OP_ENABLE_QUEUES = 8, VIRTCHNL_OP_DISABLE_QUEUES = 9, VIRTCHNL_OP_ADD_ETH_ADDR = 10, VIRTCHNL_OP_DEL_ETH_ADDR = 11, VIRTCHNL_OP_ADD_VLAN = 12, VIRTCHNL_OP_DEL_VLAN = 13, VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE = 14, VIRTCHNL_OP_GET_STATS = 15, VIRTCHNL_OP_RSVD = 16, VIRTCHNL_OP_EVENT = 17, / must ALWAYS be 17 / VIRTCHNL_OP_IWARP = 20, / advanced opcode / VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP = 21, / advanced opcode / VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP = 22, / advanced opcode / VIRTCHNL_OP_CONFIG_RSS_KEY = 23, VIRTCHNL_OP_CONFIG_RSS_LUT = 24, VIRTCHNL_OP_GET_RSS_HENA_CAPS = 25, VIRTCHNL_OP_SET_RSS_HENA = 26, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING = 27, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING = 28, VIRTCHNL_OP_REQUEST_QUEUES = 29, VIRTCHNL_OP_ENABLE_CHANNELS = 30, VIRTCHNL_OP_DISABLE_CHANNELS = 31, VIRTCHNL_OP_ADD_CLOUD_FILTER = 32, VIRTCHNL_OP_DEL_CLOUD_FILTER = 33, }; / These macros are used to generate compilation errors if a structure/union * is not exactly the correct length. It gives a divide by zero error if the * structure/union is not of the correct size, otherwise it creates an enum * that is never used. / #define VIRTCHNL_CHECK_STRUCT_LEN(n, X) enum virtchnl_static_assert_enum_##X \ { virtchnl_static_assert_##X = (n)/((sizeof(struct X) == (n)) ? 1 : 0) } #define VIRTCHNL_CHECK_UNION_LEN(n, X) enum virtchnl_static_asset_enum_##X \ { virtchnl_static_assert_##X = (n)/((sizeof(union X) == (n)) ? 1 : 0) } / Virtual channel message descriptor. This overlays the admin queue * descriptor. All other data is passed in external buffers. / struct virtchnl_msg { u8 pad[8]; / AQ flags/opcode/len/retval fields / enum virtchnl_ops v_opcode; / avoid confusion with desc->opcode / enum virtchnl_status_code v_retval; / ditto for desc->retval / u32 vfid; / used by PF when sending to VF / }; VIRTCHNL_CHECK_STRUCT_LEN(20, virtchnl_msg); / Message descriptions and data structures. / / VIRTCHNL_OP_VERSION * VF posts its version number to the PF. PF responds with its version number * in the same format, along with a return code. * Reply from PF has its major/minor versions also in param0 and param1. * If there is a major version mismatch, then the VF cannot operate. * If there is a minor version mismatch, then the VF can operate but should * add a warning to the system log. * * This enum element MUST always be specified as == 1, regardless of other * changes in the API. The PF must always respond to this message without * error regardless of version mismatch. / #define VIRTCHNL_VERSION_MAJOR 1 #define VIRTCHNL_VERSION_MINOR 1 #define VIRTCHNL_VERSION_MINOR_NO_VF_CAPS 0 struct virtchnl_version_info { u32 major; u32 minor; }; VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_version_info); #define VF_IS_V10(_v) (((_v)->major == 1) && ((_v)->minor == 0)) #define VF_IS_V11(_ver) (((_ver)->major == 1) && ((_ver)->minor == 1)) / VIRTCHNL_OP_RESET_VF * VF sends this request to PF with no parameters * PF does NOT respond! VF driver must delay then poll VFGEN_RSTAT register * until reset completion is indicated. The admin queue must be reinitialized * after this operation. * * When reset is complete, PF must ensure that all queues in all VSIs associated * with the VF are stopped, all queue configurations in the HMC are set to 0, * and all MAC and VLAN filters (except the default MAC address) on all VSIs * are cleared. / / VSI types that use VIRTCHNL interface for VF-PF communication. VSI_SRIOV * vsi_type should always be 6 for backward compatibility. Add other fields * as needed. / enum virtchnl_vsi_type { VIRTCHNL_VSI_TYPE_INVALID = 0, VIRTCHNL_VSI_SRIOV = 6, }; / VIRTCHNL_OP_GET_VF_RESOURCES * Version 1.0 VF sends this request to PF with no parameters * Version 1.1 VF sends this request to PF with u32 bitmap of its capabilities * PF responds with an indirect message containing * virtchnl_vf_resource and one or more * virtchnl_vsi_resource structures. / struct virtchnl_vsi_resource { u16 vsi_id; u16 num_queue_pairs; enum virtchnl_vsi_type vsi_type; u16 qset_handle; u8 default_mac_addr[ETH_ALEN]; }; VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource); / VF capability flags * VIRTCHNL_VF_OFFLOAD_L2 flag is inclusive of base mode L2 offloads including * TX/RX Checksum offloading and TSO for non-tunnelled packets. / #define VIRTCHNL_VF_OFFLOAD_L2 0x00000001 #define VIRTCHNL_VF_OFFLOAD_IWARP 0x00000002 #define VIRTCHNL_VF_OFFLOAD_RSVD 0x00000004 #define VIRTCHNL_VF_OFFLOAD_RSS_AQ 0x00000008 #define VIRTCHNL_VF_OFFLOAD_RSS_REG 0x00000010 #define VIRTCHNL_VF_OFFLOAD_WB_ON_ITR 0x00000020 #define VIRTCHNL_VF_OFFLOAD_REQ_QUEUES 0x00000040 #define VIRTCHNL_VF_OFFLOAD_VLAN 0x00010000 #define VIRTCHNL_VF_OFFLOAD_RX_POLLING 0x00020000 #define VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2 0x00040000 #define VIRTCHNL_VF_OFFLOAD_RSS_PF 0X00080000 #define VIRTCHNL_VF_OFFLOAD_ENCAP 0X00100000 #define VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM 0X00200000 #define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM 0X00400000 #define VIRTCHNL_VF_OFFLOAD_ADQ 0X00800000 / Define below the capability flags that are not offloads / #define VIRTCHNL_VF_CAP_ADV_LINK_SPEED 0x00000080 #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 \| \ VIRTCHNL_VF_OFFLOAD_VLAN \| \ VIRTCHNL_VF_OFFLOAD_RSS_PF) struct virtchnl_vf_resource { u16 num_vsis; u16 num_queue_pairs; u16 max_vectors; u16 max_mtu; u32 vf_cap_flags; u32 rss_key_size; u32 rss_lut_size; struct virtchnl_vsi_resource vsi_res[1]; }; VIRTCHNL_CHECK_STRUCT_LEN(36, virtchnl_vf_resource); / VIRTCHNL_OP_CONFIG_TX_QUEUE * VF sends this message to set up parameters for one TX queue. * External data buffer contains one instance of virtchnl_txq_info. * PF configures requested queue and returns a status code. / / Tx queue config info / struct virtchnl_txq_info { u16 vsi_id; u16 queue_id; u16 ring_len; / number of descriptors, multiple of 8 / u16 headwb_enabled; / deprecated with AVF 1.0 / u64 dma_ring_addr; u64 dma_headwb_addr; / deprecated with AVF 1.0 / }; VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_txq_info); / VIRTCHNL_OP_CONFIG_RX_QUEUE * VF sends this message to set up parameters for one RX queue. * External data buffer contains one instance of virtchnl_rxq_info. * PF configures requested queue and returns a status code. / / Rx queue config info / struct virtchnl_rxq_info { u16 vsi_id; u16 queue_id; u32 ring_len; / number of descriptors, multiple of 32 / u16 hdr_size; u16 splithdr_enabled; / deprecated with AVF 1.0 / u32 databuffer_size; u32 max_pkt_size; u32 pad1; u64 dma_ring_addr; enum virtchnl_rx_hsplit rx_split_pos; / deprecated with AVF 1.0 / u32 pad2; }; VIRTCHNL_CHECK_STRUCT_LEN(40, virtchnl_rxq_info); / VIRTCHNL_OP_CONFIG_VSI_QUEUES * VF sends this message to set parameters for all active TX and RX queues * associated with the specified VSI. * PF configures queues and returns status. * If the number of queues specified is greater than the number of queues * associated with the VSI, an error is returned and no queues are configured. / struct virtchnl_queue_pair_info { / NOTE: vsi_id and queue_id should be identical for both queues. / struct virtchnl_txq_info txq; struct virtchnl_rxq_info rxq; }; VIRTCHNL_CHECK_STRUCT_LEN(64, virtchnl_queue_pair_info); struct virtchnl_vsi_queue_config_info { u16 vsi_id; u16 num_queue_pairs; u32 pad; struct virtchnl_queue_pair_info qpair[1]; }; VIRTCHNL_CHECK_STRUCT_LEN(72, virtchnl_vsi_queue_config_info); / VIRTCHNL_OP_REQUEST_QUEUES * VF sends this message to request the PF to allocate additional queues to * this VF. Each VF gets a guaranteed number of queues on init but asking for * additional queues must be negotiated. This is a best effort request as it * is possible the PF does not have enough queues left to support the request. * If the PF cannot support the number requested it will respond with the * maximum number it is able to support. If the request is successful, PF will * then reset the VF to institute required changes. / / VF resource request / struct virtchnl_vf_res_request { u16 num_queue_pairs; }; / VIRTCHNL_OP_CONFIG_IRQ_MAP * VF uses this message to map vectors to queues. * The rxq_map and txq_map fields are bitmaps used to indicate which queues * are to be associated with the specified vector. * The "other" causes are always mapped to vector 0. * PF configures interrupt mapping and returns status. / struct virtchnl_vector_map { u16 vsi_id; u16 vector_id; u16 rxq_map; u16 txq_map; u16 rxitr_idx; u16 txitr_idx; }; VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_vector_map); struct virtchnl_irq_map_info { u16 num_vectors; struct virtchnl_vector_map vecmap[1]; }; VIRTCHNL_CHECK_STRUCT_LEN(14, virtchnl_irq_map_info); / VIRTCHNL_OP_ENABLE_QUEUES * VIRTCHNL_OP_DISABLE_QUEUES * VF sends these message to enable or disable TX/RX queue pairs. * The queues fields are bitmaps indicating which queues to act upon. * (Currently, we only support 16 queues per VF, but we make the field * u32 to allow for expansion.) * PF performs requested action and returns status. / struct virtchnl_queue_select { u16 vsi_id; u16 pad; u32 rx_queues; u32 tx_queues; }; VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_queue_select); / VIRTCHNL_OP_ADD_ETH_ADDR * VF sends this message in order to add one or more unicast or multicast * address filters for the specified VSI. * PF adds the filters and returns status. / / VIRTCHNL_OP_DEL_ETH_ADDR * VF sends this message in order to remove one or more unicast or multicast * filters for the specified VSI. * PF removes the filters and returns status. / struct virtchnl_ether_addr { u8 addr[ETH_ALEN]; u8 pad[2]; }; VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_ether_addr); struct virtchnl_ether_addr_list { u16 vsi_id; u16 num_elements; struct virtchnl_ether_addr list[1]; }; VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_ether_addr_list); / VIRTCHNL_OP_ADD_VLAN * VF sends this message to add one or more VLAN tag filters for receives. * PF adds the filters and returns status. * If a port VLAN is configured by the PF, this operation will return an * error to the VF. / / VIRTCHNL_OP_DEL_VLAN * VF sends this message to remove one or more VLAN tag filters for receives. * PF removes the filters and returns status. * If a port VLAN is configured by the PF, this operation will return an * error to the VF. / struct virtchnl_vlan_filter_list { u16 vsi_id; u16 num_elements; u16 vlan_id[1]; }; VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_vlan_filter_list); / VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE * VF sends VSI id and flags. * PF returns status code in retval. * Note: we assume that broadcast accept mode is always enabled. / struct virtchnl_promisc_info { u16 vsi_id; u16 flags; }; VIRTCHNL_CHECK_STRUCT_LEN(4, virtchnl_promisc_info); #define FLAG_VF_UNICAST_PROMISC 0x00000001 #define FLAG_VF_MULTICAST_PROMISC 0x00000002 / VIRTCHNL_OP_GET_STATS * VF sends this message to request stats for the selected VSI. VF uses * the virtchnl_queue_select struct to specify the VSI. The queue_id * field is ignored by the PF. * * PF replies with struct eth_stats in an external buffer. / / VIRTCHNL_OP_CONFIG_RSS_KEY * VIRTCHNL_OP_CONFIG_RSS_LUT * VF sends these messages to configure RSS. Only supported if both PF * and VF drivers set the VIRTCHNL_VF_OFFLOAD_RSS_PF bit during * configuration negotiation. If this is the case, then the RSS fields in * the VF resource struct are valid. * Both the key and LUT are initialized to 0 by the PF, meaning that * RSS is effectively disabled until set up by the VF. / struct virtchnl_rss_key { u16 vsi_id; u16 key_len; u8 key[1]; / RSS hash key, packed bytes / }; VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_key); struct virtchnl_rss_lut { u16 vsi_id; u16 lut_entries; u8 lut[1]; / RSS lookup table / }; VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_lut); / VIRTCHNL_OP_GET_RSS_HENA_CAPS * VIRTCHNL_OP_SET_RSS_HENA * VF sends these messages to get and set the hash filter enable bits for RSS. * By default, the PF sets these to all possible traffic types that the * hardware supports. The VF can query this value if it wants to change the * traffic types that are hashed by the hardware. / struct virtchnl_rss_hena { u64 hena; }; VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_rss_hena); / VIRTCHNL_OP_ENABLE_CHANNELS * VIRTCHNL_OP_DISABLE_CHANNELS * VF sends these messages to enable or disable channels based on * the user specified queue count and queue offset for each traffic class. * This struct encompasses all the information that the PF needs from * VF to create a channel. / struct virtchnl_channel_info { u16 count; / number of queues in a channel / u16 offset; / queues in a channel start from 'offset' / u32 pad; u64 max_tx_rate; }; VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_channel_info); struct virtchnl_tc_info { u32 num_tc; u32 pad; struct virtchnl_channel_info list[1]; }; VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_tc_info); / VIRTCHNL_ADD_CLOUD_FILTER * VIRTCHNL_DEL_CLOUD_FILTER * VF sends these messages to add or delete a cloud filter based on the * user specified match and action filters. These structures encompass * all the information that the PF needs from the VF to add/delete a * cloud filter. / struct virtchnl_l4_spec { u8 src_mac[ETH_ALEN]; u8 dst_mac[ETH_ALEN]; __be16 vlan_id; __be16 pad; / reserved for future use / __be32 src_ip[4]; __be32 dst_ip[4]; __be16 src_port; __be16 dst_port; }; VIRTCHNL_CHECK_STRUCT_LEN(52, virtchnl_l4_spec); union virtchnl_flow_spec { struct virtchnl_l4_spec tcp_spec; u8 buffer[128]; / reserved for future use / }; VIRTCHNL_CHECK_UNION_LEN(128, virtchnl_flow_spec); enum virtchnl_action { / action types / VIRTCHNL_ACTION_DROP = 0, VIRTCHNL_ACTION_TC_REDIRECT, }; enum virtchnl_flow_type { / flow types / VIRTCHNL_TCP_V4_FLOW = 0, VIRTCHNL_TCP_V6_FLOW, }; struct virtchnl_filter { union virtchnl_flow_spec data; union virtchnl_flow_spec mask; enum virtchnl_flow_type flow_type; enum virtchnl_action action; u32 action_meta; u8 field_flags; }; VIRTCHNL_CHECK_STRUCT_LEN(272, virtchnl_filter); / VIRTCHNL_OP_EVENT * PF sends this message to inform the VF driver of events that may affect it. * No direct response is expected from the VF, though it may generate other * messages in response to this one. / enum virtchnl_event_codes { VIRTCHNL_EVENT_UNKNOWN = 0, VIRTCHNL_EVENT_LINK_CHANGE, VIRTCHNL_EVENT_RESET_IMPENDING, VIRTCHNL_EVENT_PF_DRIVER_CLOSE, }; #define PF_EVENT_SEVERITY_INFO 0 #define PF_EVENT_SEVERITY_CERTAIN_DOOM 255 struct virtchnl_pf_event { enum virtchnl_event_codes event; union { / If the PF driver does not support the new speed reporting * capabilities then use link_event else use link_event_adv to * get the speed and link information. The ability to understand * new speeds is indicated by setting the capability flag * VIRTCHNL_VF_CAP_ADV_LINK_SPEED in vf_cap_flags parameter * in virtchnl_vf_resource struct and can be used to determine * which link event struct to use below. / struct { enum virtchnl_link_speed link_speed; bool link_status; } link_event; struct { / link_speed provided in Mbps / u32 link_speed; u8 link_status; } link_event_adv; } event_data; int severity; }; VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_pf_event); / VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP * VF uses this message to request PF to map IWARP vectors to IWARP queues. * The request for this originates from the VF IWARP driver through * a client interface between VF LAN and VF IWARP driver. * A vector could have an AEQ and CEQ attached to it although * there is a single AEQ per VF IWARP instance in which case * most vectors will have an INVALID_IDX for aeq and valid idx for ceq. * There will never be a case where there will be multiple CEQs attached * to a single vector. * PF configures interrupt mapping and returns status. / struct virtchnl_iwarp_qv_info { u32 v_idx; / msix_vector / u16 ceq_idx; u16 aeq_idx; u8 itr_idx; }; VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_iwarp_qv_info); struct virtchnl_iwarp_qvlist_info { u32 num_vectors; struct virtchnl_iwarp_qv_info qv_info[1]; }; VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_iwarp_qvlist_info); / VF reset states - these are written into the RSTAT register: * VFGEN_RSTAT on the VF * When the PF initiates a reset, it writes 0 * When the reset is complete, it writes 1 * When the PF detects that the VF has recovered, it writes 2 * VF checks this register periodically to determine if a reset has occurred, * then polls it to know when the reset is complete. * If either the PF or VF reads the register while the hardware * is in a reset state, it will return DEADBEEF, which, when masked * will result in 3. / enum virtchnl_vfr_states { VIRTCHNL_VFR_INPROGRESS = 0, VIRTCHNL_VFR_COMPLETED, VIRTCHNL_VFR_VFACTIVE, }; /* * virtchnl_vc_validate_vf_msg * @ver: Virtchnl version info * @v_opcode: Opcode for the message * @msg: pointer to the msg buffer * @msglen: msg length * * validate msg format against struct for each opcode / static inline int virtchnl_vc_validate_vf_msg(struct virtchnl_version_info ver, u32 v_opcode, u8 msg, u16 msglen) { bool err_msg_format = false; int valid_len = 0; / Validate message length. / switch (v_opcode) { case VIRTCHNL_OP_VERSION: valid_len = sizeof(struct virtchnl_version_info); break; case VIRTCHNL_OP_RESET_VF: break; case VIRTCHNL_OP_GET_VF_RESOURCES: if (VF_IS_V11(ver)) valid_len = sizeof(u32); break; case VIRTCHNL_OP_CONFIG_TX_QUEUE: valid_len = sizeof(struct virtchnl_txq_info); break; case VIRTCHNL_OP_CONFIG_RX_QUEUE: valid_len = sizeof(struct virtchnl_rxq_info); break; case VIRTCHNL_OP_CONFIG_VSI_QUEUES: valid_len = sizeof(struct virtchnl_vsi_queue_config_info); if (msglen >= valid_len) { struct virtchnl_vsi_queue_config_info vqc = (struct virtchnl_vsi_queue_config_info )msg; valid_len += (vqc->num_queue_pairs sizeof(struct virtchnl_queue_pair_info)); if (vqc->num_queue_pairs == 0) err_msg_format = true; } break; case VIRTCHNL_OP_CONFIG_IRQ_MAP: valid_len = sizeof(struct virtchnl_irq_map_info); if (msglen >= valid_len) { struct virtchnl_irq_map_info vimi = (struct virtchnl_irq_map_info )msg; valid_len += (vimi->num_vectors * sizeof(struct virtchnl_vector_map)); if (vimi->num_vectors == 0) err_msg_format = true; } break; case VIRTCHNL_OP_ENABLE_QUEUES: case VIRTCHNL_OP_DISABLE_QUEUES: valid_len = sizeof(struct virtchnl_queue_select); break; case VIRTCHNL_OP_ADD_ETH_ADDR: case VIRTCHNL_OP_DEL_ETH_ADDR: valid_len = sizeof(struct virtchnl_ether_addr_list); if (msglen >= valid_len) { struct virtchnl_ether_addr_list veal = (struct virtchnl_ether_addr_list )msg; valid_len += veal->num_elements * sizeof(struct virtchnl_ether_addr); if (veal->num_elements == 0) err_msg_format = true; } break; case VIRTCHNL_OP_ADD_VLAN: case VIRTCHNL_OP_DEL_VLAN: valid_len = sizeof(struct virtchnl_vlan_filter_list); if (msglen >= valid_len) { struct virtchnl_vlan_filter_list vfl = (struct virtchnl_vlan_filter_list )msg; valid_len += vfl->num_elements * sizeof(u16); if (vfl->num_elements == 0) err_msg_format = true; } break; case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE: valid_len = sizeof(struct virtchnl_promisc_info); break; case VIRTCHNL_OP_GET_STATS: valid_len = sizeof(struct virtchnl_queue_select); break; case VIRTCHNL_OP_IWARP: /* These messages are opaque to us and will be validated in * the RDMA client code. We just need to check for nonzero * length. The firmware will enforce max length restrictions. / if (msglen) valid_len = msglen; else err_msg_format = true; break; case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP: break; case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP: valid_len = sizeof(struct virtchnl_iwarp_qvlist_info); if (msglen >= valid_len) { struct virtchnl_iwarp_qvlist_info qv = (struct virtchnl_iwarp_qvlist_info )msg; if (qv->num_vectors == 0) { err_msg_format = true; break; } valid_len += ((qv->num_vectors - 1) sizeof(struct virtchnl_iwarp_qv_info)); } break; case VIRTCHNL_OP_CONFIG_RSS_KEY: valid_len = sizeof(struct virtchnl_rss_key); if (msglen >= valid_len) { struct virtchnl_rss_key vrk = (struct virtchnl_rss_key )msg; valid_len += vrk->key_len - 1; } break; case VIRTCHNL_OP_CONFIG_RSS_LUT: valid_len = sizeof(struct virtchnl_rss_lut); if (msglen >= valid_len) { struct virtchnl_rss_lut vrl = (struct virtchnl_rss_lut )msg; valid_len += vrl->lut_entries - 1; } break; case VIRTCHNL_OP_GET_RSS_HENA_CAPS: break; case VIRTCHNL_OP_SET_RSS_HENA: valid_len = sizeof(struct virtchnl_rss_hena); break; case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING: case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING: break; case VIRTCHNL_OP_REQUEST_QUEUES: valid_len = sizeof(struct virtchnl_vf_res_request); break; case VIRTCHNL_OP_ENABLE_CHANNELS: valid_len = sizeof(struct virtchnl_tc_info); if (msglen >= valid_len) { struct virtchnl_tc_info vti = (struct virtchnl_tc_info )msg; valid_len += (vti->num_tc - 1) * sizeof(struct virtchnl_channel_info); if (vti->num_tc == 0) err_msg_format = true; } break; case VIRTCHNL_OP_DISABLE_CHANNELS: break; case VIRTCHNL_OP_ADD_CLOUD_FILTER: valid_len = sizeof(struct virtchnl_filter); break; case VIRTCHNL_OP_DEL_CLOUD_FILTER: valid_len = sizeof(struct virtchnl_filter); break; /* These are always errors coming from the VF. / case VIRTCHNL_OP_EVENT: case VIRTCHNL_OP_UNKNOWN: default: return VIRTCHNL_STATUS_ERR_PARAM; } / few more checks / if (err_msg_format \|\| valid_len != msglen) return VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH; return 0; } #endif / _VIRTCHNL_H_ */

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