ib_smi.h

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/*
 * Copyright (c) 2004 Mellanox Technologies Ltd.  All rights reserved.
 * Copyright (c) 2004 Infinicon Corporation.  All rights reserved.
 * Copyright (c) 2004 Intel Corporation.  All rights reserved.
 * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
 * Copyright (c) 2004 Voltaire Corporation.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - 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.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#if !defined(IB_SMI_H)
#define IB_SMI_H

#include <rdma/ib_mad.h>

#define IB_SMP_DATA_SIZE            64
#define IB_SMP_MAX_PATH_HOPS            64

struct ib_smp {
    u8  base_version;
    u8  mgmt_class;
    u8  class_version;
    u8  method;
    __be16  status;
    u8  hop_ptr;
    u8  hop_cnt;
    __be64  tid;
    __be16  attr_id;
    __be16  resv;
    __be32  attr_mod;
    __be64  mkey;
    __be16  dr_slid;
    __be16  dr_dlid;
    u8  reserved[28];
    u8  data[IB_SMP_DATA_SIZE];
    u8  initial_path[IB_SMP_MAX_PATH_HOPS];
    u8  return_path[IB_SMP_MAX_PATH_HOPS];
} __attribute__ ((packed));

#define IB_SMP_DIRECTION            cpu_to_be16(0x8000)

/* Subnet management attributes */
#define IB_SMP_ATTR_NOTICE          cpu_to_be16(0x0002)
#define IB_SMP_ATTR_NODE_DESC           cpu_to_be16(0x0010)
#define IB_SMP_ATTR_NODE_INFO           cpu_to_be16(0x0011)
#define IB_SMP_ATTR_SWITCH_INFO         cpu_to_be16(0x0012)
#define IB_SMP_ATTR_GUID_INFO           cpu_to_be16(0x0014)
#define IB_SMP_ATTR_PORT_INFO           cpu_to_be16(0x0015)
#define IB_SMP_ATTR_PKEY_TABLE          cpu_to_be16(0x0016)
#define IB_SMP_ATTR_SL_TO_VL_TABLE      cpu_to_be16(0x0017)
#define IB_SMP_ATTR_VL_ARB_TABLE        cpu_to_be16(0x0018)
#define IB_SMP_ATTR_LINEAR_FORWARD_TABLE    cpu_to_be16(0x0019)
#define IB_SMP_ATTR_RANDOM_FORWARD_TABLE    cpu_to_be16(0x001A)
#define IB_SMP_ATTR_MCAST_FORWARD_TABLE     cpu_to_be16(0x001B)
#define IB_SMP_ATTR_SM_INFO         cpu_to_be16(0x0020)
#define IB_SMP_ATTR_VENDOR_DIAG         cpu_to_be16(0x0030)
#define IB_SMP_ATTR_LED_INFO            cpu_to_be16(0x0031)
#define IB_SMP_ATTR_VENDOR_MASK         cpu_to_be16(0xFF00)

struct ib_port_info {
    __be64 mkey;
    __be64 gid_prefix;
    __be16 lid;
    __be16 sm_lid;
    __be32 cap_mask;
    __be16 diag_code;
    __be16 mkey_lease_period;
    u8 local_port_num;
    u8 link_width_enabled;
    u8 link_width_supported;
    u8 link_width_active;
    u8 linkspeed_portstate;         /* 4 bits, 4 bits */
    u8 portphysstate_linkdown;      /* 4 bits, 4 bits */
    u8 mkeyprot_resv_lmc;           /* 2 bits, 3, 3 */
    u8 linkspeedactive_enabled;     /* 4 bits, 4 bits */
    u8 neighbormtu_mastersmsl;      /* 4 bits, 4 bits */
    u8 vlcap_inittype;          /* 4 bits, 4 bits */
    u8 vl_high_limit;
    u8 vl_arb_high_cap;
    u8 vl_arb_low_cap;
    u8 inittypereply_mtucap;        /* 4 bits, 4 bits */
    u8 vlstallcnt_hoqlife;          /* 3 bits, 5 bits */
    u8 operationalvl_pei_peo_fpi_fpo;   /* 4 bits, 1, 1, 1, 1 */
    __be16 mkey_violations;
    __be16 pkey_violations;
    __be16 qkey_violations;
    u8 guid_cap;
    u8 clientrereg_resv_subnetto;       /* 1 bit, 2 bits, 5 */
    u8 resv_resptimevalue;          /* 3 bits, 5 bits */
    u8 localphyerrors_overrunerrors;    /* 4 bits, 4 bits */
    __be16 max_credit_hint;
    u8 resv;
    u8 link_roundtrip_latency[3];
};

static inline u8
ib_get_smp_direction(struct ib_smp *smp)
{
    return ((smp->status & IB_SMP_DIRECTION) == IB_SMP_DIRECTION);
}

#endif /* IB_SMI_H */