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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/include/rdma/opa_smi.h
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/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */

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/*

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 * Copyright (c) 2014 Intel Corporation.  All rights reserved.

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 */

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#ifndef OPA_SMI_H

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#define OPA_SMI_H

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#include <rdma/ib_mad.h>

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#include <rdma/ib_smi.h>

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#define OPA_SMP_LID_DATA_SIZE			2016

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#define OPA_SMP_DR_DATA_SIZE			1872

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#define OPA_SMP_MAX_PATH_HOPS			64

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#define OPA_MAX_VLS				32

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#define OPA_MAX_SLS				32

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#define OPA_MAX_SCS				32

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#define OPA_LID_PERMISSIVE			cpu_to_be32(0xFFFFFFFF)

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struct opa_smp {

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	u8	base_version;

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	u8	mgmt_class;

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	u8	class_version;

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	u8	method;

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	__be16	status;

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	u8	hop_ptr;

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	u8	hop_cnt;

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	__be64	tid;

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	__be16	attr_id;

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	__be16	resv;

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	__be32	attr_mod;

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	__be64	mkey;

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	union {

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		struct {

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			uint8_t data[OPA_SMP_LID_DATA_SIZE];

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		} lid;

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		struct {

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			__be32	dr_slid;

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			__be32	dr_dlid;

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			u8	initial_path[OPA_SMP_MAX_PATH_HOPS];

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			u8	return_path[OPA_SMP_MAX_PATH_HOPS];

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			u8	reserved[8];

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			u8	data[OPA_SMP_DR_DATA_SIZE];

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		} dr;

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	} route;

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} __packed;

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/* Subnet management attributes */

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/* ... */

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#define OPA_ATTRIB_ID_NODE_DESCRIPTION		cpu_to_be16(0x0010)

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#define OPA_ATTRIB_ID_NODE_INFO			cpu_to_be16(0x0011)

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#define OPA_ATTRIB_ID_PORT_INFO			cpu_to_be16(0x0015)

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#define OPA_ATTRIB_ID_PARTITION_TABLE		cpu_to_be16(0x0016)

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#define OPA_ATTRIB_ID_SL_TO_SC_MAP		cpu_to_be16(0x0017)

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#define OPA_ATTRIB_ID_VL_ARBITRATION		cpu_to_be16(0x0018)

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#define OPA_ATTRIB_ID_SM_INFO			cpu_to_be16(0x0020)

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#define OPA_ATTRIB_ID_CABLE_INFO		cpu_to_be16(0x0032)

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#define OPA_ATTRIB_ID_AGGREGATE			cpu_to_be16(0x0080)

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#define OPA_ATTRIB_ID_SC_TO_SL_MAP		cpu_to_be16(0x0082)

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#define OPA_ATTRIB_ID_SC_TO_VLR_MAP		cpu_to_be16(0x0083)

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#define OPA_ATTRIB_ID_SC_TO_VLT_MAP		cpu_to_be16(0x0084)

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#define OPA_ATTRIB_ID_SC_TO_VLNT_MAP		cpu_to_be16(0x0085)

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/* ... */

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#define OPA_ATTRIB_ID_PORT_STATE_INFO		cpu_to_be16(0x0087)

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/* ... */

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#define OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE	cpu_to_be16(0x008A)

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/* ... */

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struct opa_node_description {

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	u8 data[64];

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} __packed;

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struct opa_node_info {

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	u8      base_version;

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	u8      class_version;

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	u8      node_type;

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	u8      num_ports;

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	__be32  reserved;

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	__be64  system_image_guid;

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	__be64  node_guid;

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	__be64  port_guid;

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	__be16  partition_cap;

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	__be16  device_id;

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	__be32  revision;

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	u8      local_port_num;

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	u8      vendor_id[3];   /* network byte order */

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} __packed;

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#define OPA_PARTITION_TABLE_BLK_SIZE 32

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static inline u8

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opa_get_smp_direction(struct opa_smp *smp)

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{

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	return ib_get_smp_direction((struct ib_smp *)smp);

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}

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static inline u8 *opa_get_smp_data(struct opa_smp *smp)

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{

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	if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)

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		return smp->route.dr.data;

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	return smp->route.lid.data;

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}

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static inline size_t opa_get_smp_data_size(struct opa_smp *smp)

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{

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	if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)

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		return sizeof(smp->route.dr.data);

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	return sizeof(smp->route.lid.data);

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}

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static inline size_t opa_get_smp_header_size(struct opa_smp *smp)

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{

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	if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)

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		return sizeof(*smp) - sizeof(smp->route.dr.data);

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	return sizeof(*smp) - sizeof(smp->route.lid.data);

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}

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#endif /* OPA_SMI_H */

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