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sys/dev/ixl/virtchnl.h
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/****************************************************************************** | |||||
Copyright (c) 2013-2017, Intel Corporation | |||||
All rights reserved. | |||||
Redistribution and use in source and binary forms, with or without | |||||
modification, are permitted provided that the following conditions are met: | |||||
1. Redistributions of source code must retain the above copyright notice, | |||||
this list of conditions and the following disclaimer. | |||||
2. Redistributions in binary form must reproduce the above copyright | |||||
notice, this list of conditions and the following disclaimer in the | |||||
documentation and/or other materials provided with the distribution. | |||||
3. Neither the name of the Intel Corporation nor the names of its | |||||
contributors may be used to endorse or promote products derived from | |||||
this software without specific prior written permission. | |||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |||||
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |||||
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |||||
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |||||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |||||
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |||||
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |||||
POSSIBILITY OF SUCH DAMAGE. | |||||
******************************************************************************/ | |||||
/*$FreeBSD$*/ | |||||
#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_ERR_PARAM = -5, | |||||
VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH = -38, | |||||
VIRTCHNL_STATUS_ERR_CQP_COMPL_ERROR = -39, | |||||
VIRTCHNL_STATUS_ERR_INVALID_VF_ID = -40, | |||||
VIRTCHNL_STATUS_NOT_SUPPORTED = -64, | |||||
}; | |||||
#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 | |||||
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), | |||||
}; | |||||
/* 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, | |||||
}; | |||||
#define VIRTCHNL_ETH_LENGTH_OF_ADDRESS 6 | |||||
/* 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, | |||||
}; | |||||
/* This macro is used to generate a compilation error if a structure | |||||
* is not exactly the correct length. It gives a divide by zero error if the | |||||
* structure 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)} | |||||
/* 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[VIRTCHNL_ETH_LENGTH_OF_ADDRESS]; | |||||
}; | |||||
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 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; otherwise it will respond with the | |||||
* number requested. | |||||
*/ | |||||
/* 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[VIRTCHNL_ETH_LENGTH_OF_ADDRESS]; | |||||
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_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_ATTENTION 1 | |||||
#define PF_EVENT_SEVERITY_ACTION_REQUIRED 2 | |||||
#define PF_EVENT_SEVERITY_CERTAIN_DOOM 255 | |||||
struct virtchnl_pf_event { | |||||
enum virtchnl_event_codes event; | |||||
union { | |||||
struct { | |||||
enum virtchnl_link_speed link_speed; | |||||
bool link_status; | |||||
} link_event; | |||||
} 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. | |||||
*/ | |||||
/* HW does not define a type value for AEQ; only for RX/TX and CEQ. | |||||
* In order for us to keep the interface simple, SW will define a | |||||
* unique type value for AEQ. | |||||
*/ | |||||
#define QUEUE_TYPE_PE_AEQ 0x80 | |||||
#define QUEUE_INVALID_IDX 0xFFFF | |||||
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; | |||||
/* These are always errors coming from the VF. */ | |||||
case VIRTCHNL_OP_EVENT: | |||||
case VIRTCHNL_OP_UNKNOWN: | |||||
default: | |||||
return VIRTCHNL_ERR_PARAM; | |||||
} | |||||
/* few more checks */ | |||||
if (err_msg_format || valid_len != msglen) | |||||
return VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH; | |||||
return 0; | |||||
} | |||||
#endif /* _VIRTCHNL_H_ */ |