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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/include/rdma/ib_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) 2004 Mellanox Technologies Ltd.  All rights reserved.

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 * Copyright (c) 2004 Infinicon Corporation.  All rights reserved.

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 * Copyright (c) 2004 Intel Corporation.  All rights reserved.

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 * Copyright (c) 2004 Topspin Corporation.  All rights reserved.

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 * Copyright (c) 2004 Voltaire Corporation.  All rights reserved.

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 */

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#ifndef IB_SMI_H

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#define IB_SMI_H

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#include <rdma/ib_mad.h>

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#define IB_SMP_DATA_SIZE			64

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#define IB_SMP_MAX_PATH_HOPS			64

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struct ib_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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	__be16	dr_slid;

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	__be16	dr_dlid;

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	u8	reserved[28];

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	u8	data[IB_SMP_DATA_SIZE];

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	u8	initial_path[IB_SMP_MAX_PATH_HOPS];

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	u8	return_path[IB_SMP_MAX_PATH_HOPS];

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} __packed;

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#define IB_SMP_DIRECTION			cpu_to_be16(0x8000)

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/* Subnet management attributes */

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#define IB_SMP_ATTR_NOTICE			cpu_to_be16(0x0002)

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#define IB_SMP_ATTR_NODE_DESC			cpu_to_be16(0x0010)

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#define IB_SMP_ATTR_NODE_INFO			cpu_to_be16(0x0011)

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#define IB_SMP_ATTR_SWITCH_INFO			cpu_to_be16(0x0012)

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#define IB_SMP_ATTR_GUID_INFO			cpu_to_be16(0x0014)

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#define IB_SMP_ATTR_PORT_INFO			cpu_to_be16(0x0015)

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#define IB_SMP_ATTR_PKEY_TABLE			cpu_to_be16(0x0016)

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#define IB_SMP_ATTR_SL_TO_VL_TABLE		cpu_to_be16(0x0017)

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#define IB_SMP_ATTR_VL_ARB_TABLE		cpu_to_be16(0x0018)

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#define IB_SMP_ATTR_LINEAR_FORWARD_TABLE	cpu_to_be16(0x0019)

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#define IB_SMP_ATTR_RANDOM_FORWARD_TABLE	cpu_to_be16(0x001A)

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#define IB_SMP_ATTR_MCAST_FORWARD_TABLE		cpu_to_be16(0x001B)

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#define IB_SMP_ATTR_SM_INFO			cpu_to_be16(0x0020)

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#define IB_SMP_ATTR_VENDOR_DIAG			cpu_to_be16(0x0030)

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#define IB_SMP_ATTR_LED_INFO			cpu_to_be16(0x0031)

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#define IB_SMP_ATTR_VENDOR_MASK			cpu_to_be16(0xFF00)

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struct ib_port_info {

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	__be64 mkey;

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	__be64 gid_prefix;

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	__be16 lid;

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	__be16 sm_lid;

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	__be32 cap_mask;

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	__be16 diag_code;

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	__be16 mkey_lease_period;

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	u8 local_port_num;

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	u8 link_width_enabled;

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	u8 link_width_supported;

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	u8 link_width_active;

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	u8 linkspeed_portstate;			/* 4 bits, 4 bits */

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	u8 portphysstate_linkdown;		/* 4 bits, 4 bits */

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	u8 mkeyprot_resv_lmc;			/* 2 bits, 3, 3 */

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	u8 linkspeedactive_enabled;		/* 4 bits, 4 bits */

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	u8 neighbormtu_mastersmsl;		/* 4 bits, 4 bits */

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	u8 vlcap_inittype;			/* 4 bits, 4 bits */

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	u8 vl_high_limit;

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	u8 vl_arb_high_cap;

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	u8 vl_arb_low_cap;

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	u8 inittypereply_mtucap;		/* 4 bits, 4 bits */

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	u8 vlstallcnt_hoqlife;			/* 3 bits, 5 bits */

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	u8 operationalvl_pei_peo_fpi_fpo;	/* 4 bits, 1, 1, 1, 1 */

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	__be16 mkey_violations;

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	__be16 pkey_violations;

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	__be16 qkey_violations;

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	u8 guid_cap;

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	u8 clientrereg_resv_subnetto;		/* 1 bit, 2 bits, 5 */

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	u8 resv_resptimevalue;			/* 3 bits, 5 bits */

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	u8 localphyerrors_overrunerrors;	/* 4 bits, 4 bits */

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	__be16 max_credit_hint;

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	u8 resv;

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	u8 link_roundtrip_latency[3];

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};

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struct ib_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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	__be64 sys_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];

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} __packed;

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struct ib_vl_weight_elem {

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	u8      vl;     /* IB: VL is low 4 bits, upper 4 bits reserved */

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                        /* OPA: VL is low 5 bits, upper 3 bits reserved */

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	u8      weight;

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};

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static inline u8

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ib_get_smp_direction(struct ib_smp *smp)

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{

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	return ((smp->status & IB_SMP_DIRECTION) == IB_SMP_DIRECTION);

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}

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/*

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 * SM Trap/Notice numbers

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 */

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#define IB_NOTICE_TRAP_LLI_THRESH	cpu_to_be16(129)

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#define IB_NOTICE_TRAP_EBO_THRESH	cpu_to_be16(130)

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#define IB_NOTICE_TRAP_FLOW_UPDATE	cpu_to_be16(131)

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#define IB_NOTICE_TRAP_CAP_MASK_CHG	cpu_to_be16(144)

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#define IB_NOTICE_TRAP_SYS_GUID_CHG	cpu_to_be16(145)

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#define IB_NOTICE_TRAP_BAD_MKEY		cpu_to_be16(256)

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#define IB_NOTICE_TRAP_BAD_PKEY		cpu_to_be16(257)

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#define IB_NOTICE_TRAP_BAD_QKEY		cpu_to_be16(258)

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/*

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 * Other local changes flags (trap 144).

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 */

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#define IB_NOTICE_TRAP_LSE_CHG		0x04	/* Link Speed Enable changed */

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#define IB_NOTICE_TRAP_LWE_CHG		0x02	/* Link Width Enable changed */

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#define IB_NOTICE_TRAP_NODE_DESC_CHG	0x01

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/*

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 * M_Key volation flags in dr_trunc_hop (trap 256).

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 */

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#define IB_NOTICE_TRAP_DR_NOTICE	0x80

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#define IB_NOTICE_TRAP_DR_TRUNC		0x40

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/**

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 * ib_init_query_mad - Initialize query MAD.

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 * @mad: MAD to initialize.

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 */

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static inline void ib_init_query_mad(struct ib_smp *mad)

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{

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	mad->base_version = IB_MGMT_BASE_VERSION;

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	mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;

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	mad->class_version = 1;

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	mad->method = IB_MGMT_METHOD_GET;

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}

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#endif /* IB_SMI_H */

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