include/rdma/ib_smi.h

0001 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
0002 /*
0003  * Copyright (c) 2004 Mellanox Technologies Ltd.  All rights reserved.
0004  * Copyright (c) 2004 Infinicon Corporation.  All rights reserved.
0005  * Copyright (c) 2004 Intel Corporation.  All rights reserved.
0006  * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
0007  * Copyright (c) 2004 Voltaire Corporation.  All rights reserved.
0008  */
0009
0010 #ifndef IB_SMI_H
0011 #define IB_SMI_H
0012
0013 #include <rdma/ib_mad.h>
0014
0015 #define IB_SMP_DATA_SIZE            64
0016 #define IB_SMP_MAX_PATH_HOPS            64
0017
0018 struct ib_smp {
0019     u8  base_version;
0020     u8  mgmt_class;
0021     u8  class_version;
0022     u8  method;
0023     __be16  status;
0024     u8  hop_ptr;
0025     u8  hop_cnt;
0026     __be64  tid;
0027     __be16  attr_id;
0028     __be16  resv;
0029     __be32  attr_mod;
0030     __be64  mkey;
0031     __be16  dr_slid;
0032     __be16  dr_dlid;
0033     u8  reserved[28];
0034     u8  data[IB_SMP_DATA_SIZE];
0035     u8  initial_path[IB_SMP_MAX_PATH_HOPS];
0036     u8  return_path[IB_SMP_MAX_PATH_HOPS];
0037 } __packed;
0038
0039 #define IB_SMP_DIRECTION            cpu_to_be16(0x8000)
0040
0041 /* Subnet management attributes */
0042 #define IB_SMP_ATTR_NOTICE          cpu_to_be16(0x0002)
0043 #define IB_SMP_ATTR_NODE_DESC           cpu_to_be16(0x0010)
0044 #define IB_SMP_ATTR_NODE_INFO           cpu_to_be16(0x0011)
0045 #define IB_SMP_ATTR_SWITCH_INFO         cpu_to_be16(0x0012)
0046 #define IB_SMP_ATTR_GUID_INFO           cpu_to_be16(0x0014)
0047 #define IB_SMP_ATTR_PORT_INFO           cpu_to_be16(0x0015)
0048 #define IB_SMP_ATTR_PKEY_TABLE          cpu_to_be16(0x0016)
0049 #define IB_SMP_ATTR_SL_TO_VL_TABLE      cpu_to_be16(0x0017)
0050 #define IB_SMP_ATTR_VL_ARB_TABLE        cpu_to_be16(0x0018)
0051 #define IB_SMP_ATTR_LINEAR_FORWARD_TABLE    cpu_to_be16(0x0019)
0052 #define IB_SMP_ATTR_RANDOM_FORWARD_TABLE    cpu_to_be16(0x001A)
0053 #define IB_SMP_ATTR_MCAST_FORWARD_TABLE     cpu_to_be16(0x001B)
0054 #define IB_SMP_ATTR_SM_INFO         cpu_to_be16(0x0020)
0055 #define IB_SMP_ATTR_VENDOR_DIAG         cpu_to_be16(0x0030)
0056 #define IB_SMP_ATTR_LED_INFO            cpu_to_be16(0x0031)
0057 #define IB_SMP_ATTR_VENDOR_MASK         cpu_to_be16(0xFF00)
0058
0059 struct ib_port_info {
0060     __be64 mkey;
0061     __be64 gid_prefix;
0062     __be16 lid;
0063     __be16 sm_lid;
0064     __be32 cap_mask;
0065     __be16 diag_code;
0066     __be16 mkey_lease_period;
0067     u8 local_port_num;
0068     u8 link_width_enabled;
0069     u8 link_width_supported;
0070     u8 link_width_active;
0071     u8 linkspeed_portstate;         /* 4 bits, 4 bits */
0072     u8 portphysstate_linkdown;      /* 4 bits, 4 bits */
0073     u8 mkeyprot_resv_lmc;           /* 2 bits, 3, 3 */
0074     u8 linkspeedactive_enabled;     /* 4 bits, 4 bits */
0075     u8 neighbormtu_mastersmsl;      /* 4 bits, 4 bits */
0076     u8 vlcap_inittype;          /* 4 bits, 4 bits */
0077     u8 vl_high_limit;
0078     u8 vl_arb_high_cap;
0079     u8 vl_arb_low_cap;
0080     u8 inittypereply_mtucap;        /* 4 bits, 4 bits */
0081     u8 vlstallcnt_hoqlife;          /* 3 bits, 5 bits */
0082     u8 operationalvl_pei_peo_fpi_fpo;   /* 4 bits, 1, 1, 1, 1 */
0083     __be16 mkey_violations;
0084     __be16 pkey_violations;
0085     __be16 qkey_violations;
0086     u8 guid_cap;
0087     u8 clientrereg_resv_subnetto;       /* 1 bit, 2 bits, 5 */
0088     u8 resv_resptimevalue;          /* 3 bits, 5 bits */
0089     u8 localphyerrors_overrunerrors;    /* 4 bits, 4 bits */
0090     __be16 max_credit_hint;
0091     u8 resv;
0092     u8 link_roundtrip_latency[3];
0093 };
0094
0095 struct ib_node_info {
0096     u8 base_version;
0097     u8 class_version;
0098     u8 node_type;
0099     u8 num_ports;
0100     __be64 sys_guid;
0101     __be64 node_guid;
0102     __be64 port_guid;
0103     __be16 partition_cap;
0104     __be16 device_id;
0105     __be32 revision;
0106     u8 local_port_num;
0107     u8 vendor_id[3];
0108 } __packed;
0109
0110 struct ib_vl_weight_elem {
0111     u8      vl;     /* IB: VL is low 4 bits, upper 4 bits reserved */
0112                         /* OPA: VL is low 5 bits, upper 3 bits reserved */
0113     u8      weight;
0114 };
0115
0116 static inline u8
0117 ib_get_smp_direction(struct ib_smp *smp)
0118 {
0119     return ((smp->status & IB_SMP_DIRECTION) == IB_SMP_DIRECTION);
0120 }
0121
0122 /*
0123  * SM Trap/Notice numbers
0124  */
0125 #define IB_NOTICE_TRAP_LLI_THRESH   cpu_to_be16(129)
0126 #define IB_NOTICE_TRAP_EBO_THRESH   cpu_to_be16(130)
0127 #define IB_NOTICE_TRAP_FLOW_UPDATE  cpu_to_be16(131)
0128 #define IB_NOTICE_TRAP_CAP_MASK_CHG cpu_to_be16(144)
0129 #define IB_NOTICE_TRAP_SYS_GUID_CHG cpu_to_be16(145)
0130 #define IB_NOTICE_TRAP_BAD_MKEY     cpu_to_be16(256)
0131 #define IB_NOTICE_TRAP_BAD_PKEY     cpu_to_be16(257)
0132 #define IB_NOTICE_TRAP_BAD_QKEY     cpu_to_be16(258)
0133
0134 /*
0135  * Other local changes flags (trap 144).
0136  */
0137 #define IB_NOTICE_TRAP_LSE_CHG      0x04    /* Link Speed Enable changed */
0138 #define IB_NOTICE_TRAP_LWE_CHG      0x02    /* Link Width Enable changed */
0139 #define IB_NOTICE_TRAP_NODE_DESC_CHG    0x01
0140
0141 /*
0142  * M_Key volation flags in dr_trunc_hop (trap 256).
0143  */
0144 #define IB_NOTICE_TRAP_DR_NOTICE    0x80
0145 #define IB_NOTICE_TRAP_DR_TRUNC     0x40
0146
0147 /**
0148  * ib_init_query_mad - Initialize query MAD.
0149  * @mad: MAD to initialize.
0150  */
0151 static inline void ib_init_query_mad(struct ib_smp *mad)
0152 {
0153     mad->base_version = IB_MGMT_BASE_VERSION;
0154     mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
0155     mad->class_version = 1;
0156     mad->method = IB_MGMT_METHOD_GET;
0157 }
0158 #endif /* IB_SMI_H */