open-fabrics/libibverbs/solaris_compatibility.c

	solaris_compatibility.c revision 4833
/*
 * Copyright (c) 2010, 2015, Oracle and/or its affiliates. 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 HAVE_CONFIG_H
#include <config.h>
#endif /* HAVE_CONFIG_H */

/*
 * OFED Solaris wrapper
 */
#if defined(__SVR4) && defined(__sun)

#include <stdarg.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/processor.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <sys/param.h>
#include <sys/ib/clients/of/sol_uverbs/sol_uverbs_ioctl.h>
#include <sys/ib/clients/of/sol_umad/sol_umad_ioctl.h>
#include <alloca.h>
#include "../include/infiniband/arch.h"
#include "../include/infiniband/verbs.h"
#include "../include/infiniband/kern-abi.h"
#include "../include/infiniband/driver.h"
#include <errno.h>
#include <pthread.h>
#include <kstat.h>

#define min(a, b)   ((a) < (b) ? (a) : (b))

/*
 * duplicate ABI definitions for HCAs as the HCA abi headers are not
 * installed in proto.
 */
#define RDMA_USER_CM_MIN_ABI_VERSION    3 /* rdma_cma_abi.h */
#define RDMA_USER_CM_MAX_ABI_VERSION    4 /* rdma_cma_abi.h */

/*
 * Some useful definitions.
 */
#define HW_DRIVER_MAX_NAME_LEN          20
#define UVERBS_KERNEL_SYSFS_NAME_BASE       "uverbs"
#define UMAD_KERNEL_SYSFS_NAME_BASE     "umad"
#define IB_HCA_DEVPATH_PREFIX           "/dev/infiniband/hca"
#define IB_OFS_DEVPATH_PREFIX           "/dev/infiniband/ofs"
#define IB_HCA_DEVPATH_SZ           64
#define MAX_OFS_DEVPATH_LEN         64

#define MAX_HCAS                (64*16)
#define MAX_PORTS               (MAX_HCAS*2)

/*
 * sol_uverbs_drv_status is the status of what libibverbs knows
 * about the status of sol_uverbs driver.
 */
#define SOL_UVERBS_DRV_STATUS_UNKNOWN   0x0
#define SOL_UVERBS_DRV_STATUS_LOADED    0x1
#define SOL_UVERBS_DRV_STATUS_UNLOADED  0x02

static kstat_ctl_t  *kc = NULL; /* libkstat cookie */
static int sol_uverbs_drv_status = SOL_UVERBS_DRV_STATUS_UNKNOWN;
static int sol_uverbs_minor_dev = -1;

/*
 * Some useful definitions.
 */
#define SIZEOF_UVERBS_INFO  (sizeof (sol_uverbs_info_t))
#define SIZEOF_HCA_INFO     (sizeof (sol_uverbs_hca_info_t))
#define UVERBS_INFO(x)      ((sol_uverbs_info_t *)x)

/*
 * check_path() prefixs
 */
typedef enum cp_prefix_e {
    CP_SOL_UVERBS       = 1,
    CP_DEVICE       = 2,
    CP_D            = 3,
    CP_GIDS         = 4,
    CP_PKEYS        = 5,
    CP_PORTS        = 6,
    CP_UMAD         = 7,
    CP_SLASH        = 8,
    CP_SYS          = 9,
    CP_CLASS        = 10,
    CP_INFINIBAND_VERBS = 11,
    CP_INFINIBAND       = 12,
    CP_INFINIBAND_MAD   = 13,
    CP_MISC         = 14,
    CP_RDMA_CM      = 15
} cp_prefix_t;

/*
 * Some temporary cache code, until things are cleaned up as part of DR
 * work. This will speed up the sysfs emulation.
 */
typedef struct ibdev_cache_info_s {
    boolean_t           ibd_valid;
    uint_t              ibd_hw_rev;
    uint_t              ibd_abi_version;
    uint_t              ibd_vendor_id;
    uint_t              ibd_device_id;
    char                ibd_hca_path[IB_HCA_DEVPATH_SZ];
    char                ibd_node_guid_str[20];
    char                ibd_node_guid_external_str[20];
    char                ibd_sys_image_guid[20];
    char                ibd_fw_ver[16];
    char                ibd_name[IBDEV_NAME_SZ];
    char                ibd_boardid_string[PSID_STR_SZ];
    char                ibd_devid_string[DEVID_STR_SZ];
} ibdev_cache_info_t;

/* IB device info cache */
static ibdev_cache_info_t   ibdev_cache[MAX_HCAS];
static int          uverbs_abi_version = -1;

typedef struct umad_cache_info_s {
    uint_t      umc_valid;
    int     umc_port;
    char        umc_ib_dev[16];
} umad_cache_info_t;
static umad_cache_info_t    umad_dev_cache[MAX_PORTS];
static int          umad_abi_version = -1;

pthread_once_t      oneTimeInit = PTHREAD_ONCE_INIT;
static int      umad_cache_cnt = 0;
static boolean_t    initialized = B_FALSE;
static boolean_t    umad_cache_initialized = B_FALSE;
static boolean_t    ibdev_cache_initialized = B_FALSE;
static pthread_mutex_t  umad_cache_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t  ibdev_cache_mutex = PTHREAD_MUTEX_INITIALIZER;

int sol_ibv_query_gid(struct ibv_context *, uint8_t, int, union ibv_gid *);
int sol_ibv_query_pkey(struct ibv_context *, uint8_t, int, uint16_t *);
void __attribute__((constructor))solaris_init(void);
void __attribute__((destructor))solaris_fini(void);

int sol_ibv_query_device(struct ibv_device *device,
    struct ibv_device_attr *device_attr);

int sol_ibv_query_port(struct ibv_context *, uint8_t, struct ibv_port_attr *);

void
solaris_init(void)
{
    while ((kc = kstat_open()) == NULL) {
        if (errno == EAGAIN)
            (void) poll(NULL, 0, 200);
        else
            fprintf(stderr, "cannot open /dev/kstat: %s\n",
                strerror(errno));
    }
}

void
solaris_fini(void)
{
    (void) kstat_close(kc);
}

#define isdigit(c)  ((c) >= '0' && (c) <= '9')

/*
 * Given a device name of the form <driver-prefix><instance>,
 * get the device number. Device name is of the form
 * for example:- mlx4_0, mlx4_2 etc. Function will return the device instance
 * extracted from the name.
 * for example:- mlx4_0 will return 0 and mlx4_2 will return 2.
 */
static int
get_device_num(const char *device_name)
{
    const char *temp;
    const char *end;
    const char *start = device_name;
    int len;
    int devnum;

    if (!start)
        return (-1);

    len = strlen(device_name);
    end = &device_name[len - 1];

    for (temp = end; temp >= start && isdigit(*temp); temp--)
        /* Null body */;

    /*
     * Check if the device number is invalid.
     */
    if (temp == end || temp < start)
        return (-1);

    devnum = atoi(temp + 1);
    if (devnum < 0 || devnum >= MAX_HCAS)
        return (-1);

    return (devnum);
}

/*
 * For usages where ibdev cache needs to be read based on the IB device
 * name instead of uverbs device name a simple compare against the cache
 * entries is used to retrieve the corresponding ibdev cache entry.
 */
static ibdev_cache_info_t *
ibdev_cache_read_by_devname(const char *devname)
{
    int idx;
    ibdev_cache_info_t *cache = NULL;

    if (!devname)
        return (NULL);

    for (idx = 0; idx < MAX_HCAS; idx++) {
        cache = &ibdev_cache[idx];
        if (strcmp(cache->ibd_name, devname) == 0)
            break;
    }

    /*
     * If we failed to find an entry return NULL.
     */
    if (idx == MAX_HCAS)
        cache = NULL;

    return (cache);
}

/*
 * Helper function to update the ibdev cache entries with the values obtained
 * from the uverbs HCA info ioctl.
 */
static int
ibdev_cache_init()
{
    ibdev_cache_info_t      *info;
    int             fd, i, hca_cnt;
    char                uverbs_devpath[MAX_OFS_DEVPATH_LEN];
    sol_uverbs_info_t       *uverbs_infop;
    sol_uverbs_hca_info_t       *hca_infop;
    char                *buf;
    size_t              bufsize;
    uint16_t            major, minor, sub_minor;
    uint64_t            raw_fw_ver;
    uint64_t            guid;

    snprintf(uverbs_devpath, MAX_OFS_DEVPATH_LEN, "%s/%s%d",
        IB_OFS_DEVPATH_PREFIX, UVERBS_KERNEL_SYSFS_NAME_BASE,
        sol_uverbs_minor_dev);

    /*
     * using the first sol_uverbs minor node that can be opened to get
     * all the HCA information
     */
    if ((fd = open(uverbs_devpath, O_RDWR)) < 0) {
        fprintf(stderr, "sol_uverbs failed to open: %s\n",
            strerror(errno));
        return (-1);
    }

    bufsize = SIZEOF_UVERBS_INFO + (MAX_HCAS * SIZEOF_HCA_INFO);
    buf = malloc(bufsize);
    if (!buf) {
        fprintf(stderr, "ibdev_cache_update() failed to alloc\n");
        close(fd);
        return (-1);
    }
    memset(buf, 0, bufsize);

    uverbs_infop = UVERBS_INFO(buf);
    uverbs_infop->uverbs_hca_cnt = MAX_HCAS;

    if (ioctl(fd, UVERBS_IOCTL_GET_HCA_INFO, uverbs_infop) != 0) {
        fprintf(stderr, "sol_uverbs ioctl failed: %s\n",
            strerror(errno));

        goto error_exit1;
    }

    if (uverbs_infop->uverbs_solaris_abi_version !=
        IB_USER_VERBS_SOLARIS_ABI_VERSION) {
        fprintf(stderr, "sol_uverbs solaris_abi_version !="
            "IB_USER_VERBS_SOLARIS_ABI_VERSION : %d\n",
            uverbs_infop->uverbs_solaris_abi_version);
        goto error_exit1;
    }

    hca_cnt = uverbs_infop->uverbs_hca_cnt; /* hca count returned */
    hca_infop = uverbs_infop->uverbs_hca_info;

    if (hca_cnt > MAX_HCAS) {
        fprintf(stderr, "Number of HCAs returned exceeds max\n");
        goto error_exit1;
    }

    if (uverbs_abi_version == -1)
        uverbs_abi_version = uverbs_infop->uverbs_abi_version;

    for (i = 0; i < hca_cnt; i++, hca_infop++) {

        /*
         * Update the cache.
         */
        info = &ibdev_cache[hca_infop->uverbs_hca_devidx];

        (void) strncpy(info->ibd_name,
            hca_infop->uverbs_hca_ibdev_name, IBDEV_NAME_SZ);

        guid = hca_infop->uverbs_hca_node_guid;
        sprintf(info->ibd_node_guid_str, "%04x:%04x:%04x:%04x",
            (unsigned)(guid >> 48) & 0xffff,
            (unsigned)(guid >> 32) & 0xffff,
            (unsigned)(guid >> 16) & 0xffff,
            (unsigned)(guid >>  0) & 0xffff);

        guid = hca_infop->uverbs_hca_node_external_guid;
        sprintf(info->ibd_node_guid_external_str, "%04x:%04x:%04x:%04x",
            (unsigned)(guid >> 48) & 0xffff,
            (unsigned)(guid >> 32) & 0xffff,
            (unsigned)(guid >> 16) & 0xffff,
            (unsigned)(guid >>  0) & 0xffff);

        guid = hca_infop->uverbs_hca_sys_image_guid;
        sprintf(info->ibd_sys_image_guid, "%04x:%04x:%04x:%04x",
            (unsigned)(guid >> 48) & 0xffff,
            (unsigned)(guid >> 32) & 0xffff,
            (unsigned)(guid >> 16) & 0xffff,
            (unsigned)(guid >>  0) & 0xffff);

        raw_fw_ver = hca_infop->uverbs_hca_fw_ver;
        major      = (raw_fw_ver >> 32) & 0xffff;
        minor      = (raw_fw_ver >> 16) & 0xffff;
        sub_minor  = raw_fw_ver & 0xffff;

        snprintf(info->ibd_fw_ver, sizeof (info->ibd_fw_ver),
            "%d.%d.%03d", major, minor, sub_minor);

        info->ibd_hw_rev    = hca_infop->uverbs_hca_hw_version;
        info->ibd_vendor_id = hca_infop->uverbs_hca_vendorid;
        info->ibd_device_id = hca_infop->uverbs_hca_deviceid;
        info->ibd_abi_version   = hca_infop->uverbs_hca_abi_version;

        snprintf(info->ibd_hca_path, sizeof (info->ibd_hca_path),
            "%s/%s%d", IB_HCA_DEVPATH_PREFIX,
            hca_infop->uverbs_hca_driver_name,
            hca_infop->uverbs_hca_driver_instance);

        strncpy(info->ibd_boardid_string,
            hca_infop->uverbs_hca_psid_string, PSID_STR_SZ);

        strncpy(info->ibd_devid_string,
            hca_infop->uverbs_hca_devid_string, DEVID_STR_SZ);

        info->ibd_valid = B_TRUE;
    }

    free(buf);
    close(fd);
    return (0);

error_exit1:
    free(buf);
    close(fd);
    return (-1);
}

static int
umad_cache_add(uint_t dev_num, int port, char *ibdev)
{
    if ((dev_num >= MAX_PORTS) || (umad_cache_cnt >= MAX_PORTS)) {
        fprintf(stderr, "dev %d: exceeds umad cache size\n", dev_num);
        return (1);
    }

    umad_dev_cache[dev_num].umc_port = port;
    strcpy(umad_dev_cache[dev_num].umc_ib_dev, ibdev);
    umad_dev_cache[dev_num].umc_valid = 1;
    umad_cache_cnt++;
    return (0);
}

static int
umad_cache_init()
{
    int             i, fd, minor;
    int             save_errno = 0;
    int             port_cnt, bufsize;
    char                umad_devpath[MAX_OFS_DEVPATH_LEN], *buf;
    sol_umad_ioctl_info_t       *umad_infop;
    sol_umad_ioctl_port_info_t  *port_infop;

    for (minor = 0; minor < MAX_PORTS; minor++) {
        snprintf(umad_devpath, MAX_OFS_DEVPATH_LEN, "%s/%s%d",
            IB_OFS_DEVPATH_PREFIX, UMAD_KERNEL_SYSFS_NAME_BASE,
            minor);

        if ((fd = open(umad_devpath, O_RDWR)) > 0)
            break;

        if ((! save_errno) && (errno != ENOENT))
            save_errno = errno;
    }

    if ((minor == MAX_PORTS) && (fd < 0)) {
        if (! save_errno)
            save_errno = errno;
        fprintf(stderr, "failed to open sol_umad: %s\n",
            strerror(save_errno));
        return (-1);
    }

    bufsize = sizeof (sol_umad_ioctl_info_t) +
        (sizeof (sol_umad_ioctl_port_info_t) * MAX_PORTS);

    buf = malloc(bufsize);
    memset(buf, 0, bufsize);
    umad_infop = (sol_umad_ioctl_info_t *)buf;
    umad_infop->umad_port_cnt = MAX_PORTS;

    if (ioctl(fd, IB_USER_MAD_GET_PORT_INFO, umad_infop) != 0) {
        fprintf(stderr, "sol_umad ioctl failed: %s\n",
            strerror(errno));

        goto error_exit;
    }

    if (umad_infop->umad_solaris_abi_version !=
        IB_USER_MAD_SOLARIS_ABI_VERSION) {
        fprintf(stderr, "sol_umad solaris_abi_version !="
            "IB_USER_MAD_SOLARIS_ABI_VERSION : %d\n",
            umad_infop->umad_solaris_abi_version);
        goto error_exit;
    }

    /*
     * set port_cnt to the number of total ports for all HCAs returned
     */
    port_cnt = umad_infop->umad_port_cnt;
    port_infop = umad_infop->umad_port_info;

    if (umad_abi_version == -1)
        umad_abi_version = umad_infop->umad_abi_version;

    for (i = 0; i < port_cnt; i++, port_infop++) {
        if (umad_cache_add(port_infop->umad_port_idx,
            port_infop->umad_port_num,
            port_infop->umad_port_ibdev_name)) {
            fprintf(stderr, "failed to add dev %d to umad cache",
                port_infop->umad_port_idx);
            goto error_exit;
        }
    }

    free(buf);
    close(fd);
    return (0);

error_exit:
    free(buf);
    close(fd);
    return (-1);
}

void
initialize(void)
{
    int     fd, minor;
    char        uverbs_devpath[MAX_OFS_DEVPATH_LEN];

    /*
     * find the first sol_uverbs minor node that can be opened successfully
     * and set sol_uverbs_mino_dev to that minor no.
     */
    for (minor = 0; minor < MAX_HCAS; minor++) {
        snprintf(uverbs_devpath, MAX_OFS_DEVPATH_LEN, "%s/%s%d",
            IB_OFS_DEVPATH_PREFIX, UVERBS_KERNEL_SYSFS_NAME_BASE,
            minor);

        if ((fd = open(uverbs_devpath, O_RDWR)) < 0) {
            continue;
        } else {
            sol_uverbs_drv_status = SOL_UVERBS_DRV_STATUS_LOADED;
            sol_uverbs_minor_dev = minor;
            close(fd);
            break;
        }
    }

    /*
     * All minor nodes failed to open, so set sol_uverbs_drv_status to
     * SOL_UVERBS_DRV_STATUS_UNLOADED to reflect that
     */
    if (minor == MAX_HCAS && sol_uverbs_minor_dev == -1) {
        sol_uverbs_drv_status = SOL_UVERBS_DRV_STATUS_UNLOADED;
        return;
    }

    memset(&ibdev_cache, 0, (sizeof (ibdev_cache_info_t) * MAX_HCAS));
    memset(&umad_dev_cache, 0,
        (sizeof (umad_cache_info_t) * MAX_PORTS));

    initialized = B_TRUE;
}

/*
 * Some sysfs emulation software
 */

/*
 * Extract the HCA dev name from the path and remove it from the path.
 * Given a path extract the HCA dev name of the form <dev-prefix><dev-instance>
 * During parsing the device instance number is validated to make sure it is
 * within MAX_HCAS limit, the routine also skips over the duplicate slashes.
 */
static int
check_path_for_hca(char *path, char *device_name)
{
    int pos = 0;
    int len;

    while ((path[pos] != '/') || (path[pos] == '\0'))
        pos++;

    if (path[pos] != '/')
        return (0);

    strncpy(device_name, path, (pos + 1));
    device_name[pos] = '\0';

    if (get_device_num(device_name) < 0)
        return (0);

    while (path[pos] == '/')
        pos++;

    len = strlen(path);
    memmove(path, &path[pos], (len - pos) + 1);
    return (1);
}

/*
 * Check whether a path starts with prefix, and if it does, remove it
 * from the string. The prefix can also contain one %d scan argument.
 */
static int
check_path(char *path, cp_prefix_t prefix, unsigned int *arg)
{
    int ret, pos = 0;

    switch (prefix) {
        case CP_SOL_UVERBS:
            ret = sscanf(path, "uverbs%d%n/", arg,
                &pos);
            break;
        case CP_DEVICE:
            ret = sscanf(path, "device%n/", &pos);
            break;
        case CP_D:
            ret = sscanf(path, "%d%n/", arg, &pos);
            break;
        case CP_GIDS:
            ret = sscanf(path, "gids%n/", &pos);
            break;
        case CP_PKEYS:
            ret = sscanf(path, "pkeys%n/", &pos);
            break;
        case CP_PORTS:
            ret = sscanf(path, "ports%n/", &pos);
            break;
        case CP_UMAD:
            ret = sscanf(path, "umad%d%n/", arg, &pos);
            break;
        case CP_SLASH:
            ret = sscanf(path, "%n/", &pos);
            break;
        case CP_SYS:
            ret = sscanf(path, "sys%n/", &pos);
            break;
        case CP_CLASS:
            ret = sscanf(path, "class%n/", &pos);
            break;
        case CP_INFINIBAND_VERBS:
            ret = sscanf(path, "infiniband_verbs%n/", &pos);
            break;
        case CP_INFINIBAND:
            ret = sscanf(path, "infiniband%n/", &pos);
            break;
        case CP_INFINIBAND_MAD:
            ret = sscanf(path, "infiniband_mad%n/", &pos);
            break;
        case CP_MISC:
            ret = sscanf(path, "misc%n/", &pos);
            break;
        case CP_RDMA_CM:
            ret = sscanf(path, "rdma_cm%n/", &pos);
            break;
        default:
            /* Unkown prefix */
            return (0);
    }

    if (path[pos] == '/') {
        /* Some requests have several consecutive slashes. */
        while (path[pos] == '/')
            pos ++;

        memmove(path, &path[pos], strlen(path)-pos+1);
        return (1);
    }

    return (0);
}

static ibdev_cache_info_t *
get_device_info(const char *devname)
{
    ibdev_cache_info_t  *info = NULL;

    if (pthread_mutex_lock(&ibdev_cache_mutex) != 0) {
        fprintf(stderr, "failed: to acquire ibdev_cache_mutex %s\n",
            strerror(errno));
        return (NULL);
    }

    if (ibdev_cache_initialized == B_FALSE) {
        if (ibdev_cache_init() != 0) {
            (void) pthread_mutex_unlock(&ibdev_cache_mutex);
            fprintf(stderr, "failed to init ibdev_cache\n");
            return (NULL);
        }
        ibdev_cache_initialized = B_TRUE;
    }
    (void) pthread_mutex_unlock(&ibdev_cache_mutex);

    info = ibdev_cache_read_by_devname(devname);

    return (info);
}

/*
 * Get the IB user verbs port info attributes for the specified device/port.
 * If the address of a gid pointer is passed for "gid_table", the memory
 * will be allocated and the ports gid table and returned as well. The caller
 * must free this memory on successful completion.  If the address of a
 * pkey pointer is passed for "pkey_table", the memory will be allocated
 * and the ports pkey table returned as well.  The caller must free this
 * memory on successful completion.
 */
static int
get_port_info(const char *devname, uint8_t port_num,
    struct ibv_port_attr *port_attr, union ibv_gid **gid_table,
    uint16_t **pkey_table)
{
    struct ibv_device   **root_dev_list, **dev_list = NULL;
    struct ibv_context  ctx;
    union ibv_gid       *gids = NULL;
    uint16_t        *pkeys = NULL;
    int             i, num_dev, rv, ret = 1;
    char            uverbs_devpath[MAX_OFS_DEVPATH_LEN];

    root_dev_list = dev_list = ibv_get_device_list(&num_dev);
    if (!dev_list) {
        fprintf(stderr, "No HCA devices found\n");
        goto error_exit1;
    }

    for (i = 0; i < num_dev; i++, dev_list++) {
        if (strcmp(ibv_get_device_name(*dev_list), devname) == 0) {
            break;
        }
    }

    if (i == num_dev) {
        fprintf(stderr, "failed to find %s\n", devname);
        goto error_exit2;
    }

    snprintf(uverbs_devpath, MAX_OFS_DEVPATH_LEN, "%s/%s",
        IB_OFS_DEVPATH_PREFIX, (*dev_list)->dev_name);

    ctx.device = *dev_list;

    if ((ctx.cmd_fd = open(uverbs_devpath, O_RDWR)) < 0)
        goto error_exit2;

    if (sol_ibv_query_port(&ctx, port_num, port_attr)) {
        fprintf(stderr, "failed to query dev %p, port %d\n",
            &ctx, port_num);
        goto error_exit3;
    }

    if (gid_table) {
        *gid_table = NULL;
        gids = malloc(sizeof (union ibv_gid) * port_attr->gid_tbl_len);
        if (!gids)
            goto error_exit3;
        /*
         * set high bit of port_num to get all gids in one shot.
         */
        port_num |= 0x80;
        rv = sol_ibv_query_gid(&ctx, port_num, port_attr->gid_tbl_len,
            gids);
        if (rv != 0)
            goto error_exit4;

        *gid_table = gids;
        gids = NULL;
    }

    if (pkey_table) {
        *pkey_table = NULL;
        pkeys = malloc(sizeof (uint16_t) * port_attr->pkey_tbl_len);
        if (!pkeys)
            goto error_exit4;

        /*
         * set high bit of port_num to get all pkeys in one shot.
         */
        port_num |= 0x80;
        rv = sol_ibv_query_pkey(&ctx, port_num, port_attr->pkey_tbl_len,
            pkeys);
        if (rv != 0)
            goto error_exit5;

        *pkey_table = pkeys;
        pkeys = NULL;
    }

    ret = 0;

    /*
     * clean up and Return
     */
error_exit5:
    if (pkeys)
        free(pkeys);
error_exit4:
    if (gids)
        free(gids);
error_exit3:
    if (ctx.cmd_fd > 0)
        close(ctx.cmd_fd);
error_exit2:
    if (root_dev_list)
        ibv_free_device_list(root_dev_list);
error_exit1:
    return (ret);
}

/*
 * In Solaris environments, the underlying hardware driver is opened to
 * perform the memory mapping operations of kernel allocated memory
 * into the users address space.
 */
int
ibv_open_mmap_driver(char *dev_name)
{
    int         fd;
#ifndef _LP64
    int         tmpfd;
#endif
    int         indx;

    /*
     * Map the user verbs device (uverbs) to the associated
     * hca device. ibdev_cache is indexed by uverbs device minor number
     * so extracting the index here to refer to the ibdev_cache value,
     */
    indx = strtol(dev_name + strlen(UVERBS_KERNEL_SYSFS_NAME_BASE),
        NULL, 0);
    if (indx >= MAX_HCAS) {
        fprintf(stderr, "Invalid device %s\n", dev_name);
        goto err_dev;
    }

    if (!ibdev_cache[indx].ibd_valid) {
        fprintf(stderr, "Invalid Device %s\n", dev_name);
        goto err_dev;
    }

    fd = open(ibdev_cache[indx].ibd_hca_path, O_RDWR);
    if (fd < 0) {
        goto err_dev;
    }

#ifndef _LP64
    /*
     * libc can't handle fd's greater than 255,  in order to
     * ensure that these values remain available make fd > 255.
     * Note: not needed for LP64
     */
    tmpfd = fcntl(fd, F_DUPFD, 256);
    if (tmpfd >=  0) {
        (void) close(fd);
        fd = tmpfd;
    }
#endif  /* _LP64 */

    if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
        fprintf(stderr, "FD_CLOEXEC failed: %s\n", strerror(errno));
        goto err_close;
    }
    return (fd);

err_close:
    close(fd);
err_dev:
    return (-1);
}

static int
infiniband_verbs(char *path, char *buf, size_t size)
{
    unsigned int        device_num;
    int             len = -1;
    ibdev_cache_info_t  *info_p;

    if (pthread_mutex_lock(&ibdev_cache_mutex) != 0) {
        fprintf(stderr, "failed: to acquire ibdev_cache_mutex %s\n",
            strerror(errno));
        goto exit;
    }

    if (ibdev_cache_initialized == B_FALSE) {
        if (ibdev_cache_init() == 0)
            ibdev_cache_initialized = B_TRUE;
        else {
            (void) pthread_mutex_unlock(&ibdev_cache_mutex);
#ifdef  DEBUG
            fprintf(stderr, "failed: to init ibdev cache %s\n",
                strerror(errno));
#endif
            goto exit;
        }
    }
    (void) pthread_mutex_unlock(&ibdev_cache_mutex);

    if (check_path(path, CP_SOL_UVERBS, &device_num)) {

        if (device_num >= MAX_HCAS) {
            fprintf(stderr, "Invalid path%s\n", path);
            goto exit;
        }

        if (!ibdev_cache[device_num].ibd_valid)
            goto exit;

        info_p = &ibdev_cache[device_num];

        if (check_path(path, CP_DEVICE, NULL)) {
            /*
             * Under Linux, this is a link to the PCI device entry
             * in /sys/devices/pci...../....
             */
            if (strcmp(path, "vendor") == 0) {
                len = 1 + sprintf(buf, "0x%x",
                    info_p->ibd_vendor_id);
            } else if (strcmp(path, "device") == 0) {
                len = 1 + sprintf(buf, "0x%x",
                    info_p->ibd_device_id);
            }
        } else if (strcmp(path, "ibdev") == 0) {
            len = 1 + sprintf(buf, "%s", info_p->ibd_name);
        } else if (strcmp(path, "abi_version") == 0) {
            len = 1 + sprintf(buf, "%d", info_p->ibd_abi_version);
        }
    } else if (strcmp(path, "abi_version") == 0) {

        if (uverbs_abi_version == -1) {
            fprintf(stderr, "UVerbs ABI Version invalid\n");

            goto exit;
        }

        len = 1 + sprintf(buf, "%d", uverbs_abi_version);
    } else {
        fprintf(stderr, "Unsupported read: %s\n", path);
    }
exit:
    return (len);
}

static int
infiniband_ports(char *path, char *buf, size_t size, char *dev_name)
{
    int             len = -1;
    unsigned int        port_num;
    unsigned int        gid_num;
    union ibv_gid       *gids;
    uint64_t        subnet_prefix;
    uint64_t        interface_id;
    uint16_t        *pkeys;
    unsigned int        pkey_num;
    struct ibv_port_attr    port_attr;
    float           rate;

    if (!(check_path(path, CP_D, &port_num)))
        goto exit;

    if (check_path(path, CP_GIDS, NULL)) {
        if (get_port_info(dev_name, port_num, &port_attr, &gids, NULL))
                goto exit;

        gid_num = atoi(path);

        if (gid_num <  port_attr.gid_tbl_len) {

            subnet_prefix =
                htonll(gids[gid_num].global.subnet_prefix);
            interface_id =
                htonll(gids[gid_num].global.interface_id);
            len = 1 + sprintf(buf,
                "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x",
                (unsigned)(subnet_prefix >>  48) & 0xffff,
                (unsigned)(subnet_prefix >>  32) & 0xffff,
                (unsigned)(subnet_prefix >>  16) & 0xffff,
                (unsigned)(subnet_prefix >>   0) & 0xffff,
                (unsigned)(interface_id  >>  48) & 0xffff,
                (unsigned)(interface_id  >>  32) & 0xffff,
                (unsigned)(interface_id  >>  16) & 0xffff,
                (unsigned)(interface_id  >>   0) & 0xffff);
        }
        if (gids)
            free(gids);

    } else if (check_path(path, CP_PKEYS, NULL)) {
        if (get_port_info(dev_name, port_num, &port_attr, NULL, &pkeys))
                goto exit;

        pkey_num = atoi(path);
        if (pkey_num <  port_attr.pkey_tbl_len)
            len = 1 + sprintf(buf, "0x%04x", pkeys[pkey_num]);

        if (pkeys)
            free(pkeys);
    } else {

        if (get_port_info(dev_name, port_num, &port_attr, NULL, NULL))
                goto exit;

        if (strcmp(path, "lid_mask_count") == 0) {
            len = 1 + sprintf(buf, "%d", port_attr.lmc);
        } else if (strcmp(path, "sm_lid") == 0) {
            len = 1 + sprintf(buf, "0x%x", port_attr.sm_lid);
        } else if (strcmp(path, "sm_sl") == 0) {
            len = 1 + sprintf(buf, "%d", port_attr.sm_sl);
        } else if (strcmp(path, "lid") == 0) {
            len = 1 + sprintf(buf, "0x%x", port_attr.lid);
        } else if (strcmp(path, "state") == 0) {
            switch (port_attr.state) {
                case IBV_PORT_NOP:
                    len = 1 + sprintf(buf, "%d: NOP",
                        port_attr.state);
                    break;
                case IBV_PORT_DOWN:
                    len = 1 + sprintf(buf, "%d: DOWN",
                        port_attr.state);
                    break;
                case IBV_PORT_INIT:
                    len = 1 + sprintf(buf, "%d: INIT",
                        port_attr.state);
                    break;
                case IBV_PORT_ARMED:
                    len = 1 + sprintf(buf, "%d: ARMED",
                        port_attr.state);
                    break;
                case IBV_PORT_ACTIVE:
                    len = 1 + sprintf(buf, "%d: ACTIVE",
                        port_attr.state);
                    break;
                case IBV_PORT_ACTIVE_DEFER:
                    len = 1 + sprintf(buf,
                        "%d: ACTIVE_DEFER",
                        port_attr.state);
                    break;
                default:
                    len = 1 + sprintf(buf, "%d: INVALID",
                        port_attr.state);
                    break;
            }
        } else if (strcmp(path, "phys_state") == 0) {
            switch (port_attr.phys_state) {
                case 1:
                    len = 1 + sprintf(buf, "%d: Sleep",
                        port_attr.phys_state);
                    break;
                case 2:
                    len = 1 + sprintf(buf, "%d: Polling",
                        port_attr.phys_state);
                    break;
                case 3:
                    len = 1 + sprintf(buf, "%d: Disabled",
                        port_attr.phys_state);
                    break;
                case 4:
                    len = 1 + sprintf(buf,
                        "%d: PortConfigurationTraining",
                        port_attr.phys_state);
                    break;
                case 5:
                    len = 1 + sprintf(buf, "%d: LinkUp",
                        port_attr.phys_state);
                    break;
                case 6:
                    len = 1 + sprintf(buf,
                        "%d: LinkErrorRecovery",
                        port_attr.phys_state);
                    break;
                case 7:
                    len = 1 + sprintf(buf,
                        "%d: Phy Test",
                        port_attr.phys_state);
                    break;
                default:
                    len = 1 + sprintf(buf, "%d: <unknown>",
                        port_attr.phys_state);
                    break;
            }
        } else if (strcmp(path, "rate") == 0) {
            /* rate = speed * width */
            switch (port_attr.active_speed) {
            case 1:
                rate = 2.5;
                break;
            case 2:
                rate = 5;
                break;
            case 4:
                /* FALLTHROUGH */
            case 8:
                rate = 10;
                break;
            case 16:
                rate = 14.0625;
                break;
            case 32:
                rate = 25.78125;
                break;
            default:
                rate = 0;
            }
            switch (port_attr.active_width) {
            case 1:
                break;
            case 2:
                rate = 4 * rate;
                break;
            case 4:
                rate = 8 * rate;
                break;
            case 8:
                rate = 12 * rate;
                break;
            default:
                rate = 0;
            }
            len = 1 + sprintf(buf, "%f", rate);
        } else if (strcmp(path, "cap_mask") == 0) {
            len = 1 + sprintf(buf, "0x%08x",
                port_attr.port_cap_flags);
        } else if (strcmp(path, "link_layer") == 0) {
            switch (port_attr.link_layer) {
                case IBV_LINK_LAYER_UNSPECIFIED:
                case IBV_LINK_LAYER_INFINIBAND:
                    len = 1 + sprintf(buf, "%s", "IB");
                    break;
                case IBV_LINK_LAYER_ETHERNET:
                    len =
                        1 + sprintf(buf, "%s", "Ethernet");
                    break;
                default:
                    len = 1 + sprintf(buf, "%s", "Unknown");
            }
        }
    }
exit:
    return (len);
}

static int
infiniband(char *path, char *buf, size_t size)
{
    int         len = -1;
    char            dev_name[MAXNAMELEN];
    ibdev_cache_info_t  *info;

    memset(dev_name, 0, MAXNAMELEN);

    if (!check_path_for_hca(path, dev_name))
        goto exit;

    if (check_path(path, CP_PORTS, NULL)) {
        len = infiniband_ports(path, buf, size, dev_name);
    } else if (strcmp(path, "node_type") == 0) {
        len = 1 + sprintf(buf, "%d", IBV_NODE_CA);
    } else {
        if (!(info = get_device_info(dev_name)))
            goto exit;

        if (strcmp(path, "node_guid") == 0) {
            len = 1 + sprintf(buf, "%s", info->ibd_node_guid_str);
        } else if (strcmp(path, "node_guid_external") == 0) {
            len = 1 + sprintf(buf, "%s",
                info->ibd_node_guid_external_str);
        } else if (strcmp(path, "sys_image_guid") == 0) {
            len = 1 + sprintf(buf, "%s", info->ibd_sys_image_guid);
        } else if (strcmp(path, "fw_ver") == 0) {
            len = 1 + sprintf(buf, "%s", info->ibd_fw_ver);
        } else if (strcmp(path, "hw_rev") == 0) {
            len = 1 + sprintf(buf, "%d", info->ibd_hw_rev);
        } else if (strcmp(path, "hca_type") == 0) {
            len = 1 + sprintf(buf, "%s", info->ibd_devid_string);
        } else if (strcmp(path, "board_id") == 0) {
            len = 1 + sprintf(buf, "%s", info->ibd_boardid_string);
        }
    }
exit:
    return (len);
}

static int
infiniband_mad(char *path, char *buf, size_t size)
{
    int     len = -1;
    unsigned int    dev_num;

    if (pthread_mutex_lock(&umad_cache_mutex) != 0) {
        fprintf(stderr, "failed: to acquire umad_cache_mutex %s\n",
            strerror(errno));
        goto exit;
    }
    if (umad_cache_initialized == B_FALSE) {
        if (umad_cache_init() == 0)
            umad_cache_initialized = B_TRUE;
        else {
            (void) pthread_mutex_unlock(&umad_cache_mutex);
#ifdef  DEBUG
            fprintf(stderr, "failed: to init umad cache %s\n",
                strerror(errno));
#endif
            goto exit;
        }
    }
    (void) pthread_mutex_unlock(&umad_cache_mutex);

    if (check_path(path, CP_UMAD, &dev_num)) {
        if (dev_num >= MAX_PORTS) {
            fprintf(stderr, "Invalid Path: %s\n", path);
            goto exit;
        }
        if (!umad_dev_cache[dev_num].umc_valid) {
            goto exit;
        }
        if (strcmp(path, "ibdev") == 0) {
            len = strlcpy(buf, umad_dev_cache[dev_num].umc_ib_dev,
                size) + 1;
        } else if (strcmp(path, "port") == 0) {
            len = 1 + sprintf(buf, "%d",
                umad_dev_cache[dev_num].umc_port);
        }
    } else if (strcmp(path, "abi_version") == 0) {
        if (umad_abi_version == -1) {
            fprintf(stderr, "UMAD ABI Version invalid\n");
            goto exit;
        }
        len =
            1 + sprintf(buf, "%d", umad_abi_version);
    }
exit:
    return (len);
}

/*
 * Return -1 on error, or the length of the data (buf) on success.
 */
int
sol_read_sysfs_file(char *path, char *buf, size_t size)
{
    int             len = -1;

    if (!initialized) {
        if (pthread_once(&oneTimeInit, initialize)) {
            fprintf(stderr, "failed to initialize: %s\n",
                strerror(errno));
            goto exit;
        }
        if (!initialized)
            /*
             * There was a problem in initialize()
             */
            goto exit;
    }

    if (!check_path(path, CP_SLASH, NULL))
        goto exit;

    if (!check_path(path, CP_SYS, NULL))
        goto exit;

    if (!check_path(path, CP_CLASS, NULL))
        goto exit;

    if (check_path(path, CP_INFINIBAND_VERBS, NULL)) {
        len = infiniband_verbs(path, buf, size);
    } else if (check_path(path, CP_INFINIBAND, NULL)) {
        len = infiniband(path, buf, size);
    } else if (check_path(path, CP_INFINIBAND_MAD, NULL)) {
        len = infiniband_mad(path, buf, size);
    } else if (check_path(path, CP_MISC, NULL)) {
        if (check_path(path, CP_RDMA_CM, NULL)) {
            if (strcmp(path, "abi_version") == 0) {
                len = 1 + sprintf(buf, "%d",
                    RDMA_USER_CM_MAX_ABI_VERSION);
            }
        }
    }
exit:
    return (len);
}


int
sol_get_cpu_info(sol_cpu_info_t **info_p)
{
    kstat_t     *ksp;
    kstat_named_t   *knp;
    uint_t      ncpus = 0, i;
    sol_cpu_info_t  *info;

    ncpus = sysconf(_SC_NPROCESSORS_ONLN);

    if (ncpus <= 0)
        return (0);

    if (!(*info_p = malloc(ncpus * sizeof (sol_cpu_info_t))))
        return (-1);

    info = *info_p;
    bzero((void *)info, ncpus * sizeof (sol_cpu_info_t));

    for (i = 0; i < ncpus; i++) {
        if ((ksp = kstat_lookup(kc, "cpu_info", i, NULL)) == NULL) {
            if (i >= ncpus)
                goto err_exit;
            else
                continue;
        }

        if ((kstat_read(kc, ksp, NULL) == -1)) {
            if (i >= ncpus)
                goto err_exit;
            else
                continue;
        }

        if ((knp = (kstat_named_t *)kstat_data_lookup(ksp, "brand"))
            == NULL) {
            if (i >= ncpus)
                goto err_exit;
            else
                continue;
        }

        (void) strlcpy(info[i].cpu_name, knp->value.str.addr.ptr,
            knp->value.str.len);

        if ((knp = (kstat_named_t *)kstat_data_lookup(ksp, "clock_MHz"))
            == NULL) {
            if (i >= ncpus)
                goto err_exit;
            else
                continue;
        }

        info[i].cpu_mhz = knp->value.ui64;
        info[i].cpu_number = i;
    }
    return (ncpus);
err_exit:
    free(info);
    return (-1);
}

int
sol_get_cpu_stats(sol_cpu_stats_t *stats)
{
    size_t      i, nr_cpus;
    kstat_t     *ksp;
    kstat_named_t   *knp;

    memset(stats, 0, sizeof (sol_cpu_stats_t));
    nr_cpus = sysconf(_SC_NPROCESSORS_ONLN);

    /* Aggregate the value of all CPUs */
    for (i = 0; i < nr_cpus; i++) {
        /*
         * In case of some cpu_id doesn't have kstat info.,
         * skip it and continue if it isn't the last one.
         */
        if ((ksp = kstat_lookup(kc, "cpu", i, "sys")) == NULL) {
            if (i >= nr_cpus)
                return (-1);
            else
                continue;
        }

        if (kstat_read(kc, ksp, NULL) == -1) {
            if (i >= nr_cpus)
                return (-1);
            else
                continue;
        }

        if ((knp = (kstat_named_t *)
            kstat_data_lookup(ksp, "cpu_ticks_user")) == NULL) {
            if (i >= nr_cpus)
                return (-1);
            else
                continue;
        }

        stats->t_user += knp->value.ui64;

        if ((knp = (kstat_named_t *)
            kstat_data_lookup(ksp, "cpu_ticks_kernel")) == NULL) {
            if ((knp == NULL) && i >= nr_cpus)
                return (-1);
            else
                continue;
        }
        stats->t_kernel += knp->value.ui64;

        if ((knp = (kstat_named_t *)
            kstat_data_lookup(ksp, "cpu_ticks_idle")) == NULL) {
            if (i >= nr_cpus)
                return (-1);
            else
                continue;
        }
        stats->t_idle += knp->value.ui64;

        if ((knp = (kstat_named_t *)
            kstat_data_lookup(ksp, "cpu_ticks_wait")) == NULL) {
            if (i >= nr_cpus)
                return (-1);
            else
                continue;
        }
        stats->t_iowait += knp->value.ui64;

        if ((knp = (kstat_named_t *)
            kstat_data_lookup(ksp, "cpu_nsec_intr")) == NULL) {
            if (i >= nr_cpus)
                return (-1);
            else
                continue;
        }
        stats->t_intr += knp->value.ui64;   /* This is in NSEC */
    }
    return (0);
}

int
sol_ibv_query_gid(struct ibv_context *context, uint8_t port_num, int index,
    union ibv_gid *gid)
{
    int         count, start;
    sol_uverbs_gid_t    *uverbs_gidp;

    /*
     * Not exported via sysfs, use ioctl.
     */
    if (!context || !gid || (index < 0) ||
        ((port_num & 0x80) && (index == 0)))
        return (-1);

    if (port_num & 0x80) {
        start = 0;
        count = index;
    } else {
        start = index;
        count = 1;
    }

    uverbs_gidp = (sol_uverbs_gid_t *)malloc(count *
        sizeof (union ibv_gid) + sizeof (sol_uverbs_gid_t));
    if (uverbs_gidp == NULL) {
        return (-1);
    }

    uverbs_gidp->uverbs_port_num = port_num & 0x7F;
    uverbs_gidp->uverbs_gid_cnt = count;
    uverbs_gidp->uverbs_gid_start_index = start;

    if (ioctl(context->cmd_fd, UVERBS_IOCTL_GET_GIDS, uverbs_gidp) != 0) {
#ifdef  DEBUG
        fprintf(stderr, "UVERBS_IOCTL_GET_GIDS failed: %s\n",
            strerror(errno));
#endif
        goto gid_error_exit;
    }

    if (uverbs_gidp->uverbs_solaris_abi_version !=
        IB_USER_VERBS_SOLARIS_ABI_VERSION) {
#ifdef  DEBUG
        fprintf(stderr, "sol_uverbs solaris_abi_version != "
            "IB_USER_VERBS_SOLARIS_ABI_VERSION : %d\n",
            uverbs_gidp->uverbs_solaris_abi_version);
#endif
        goto gid_error_exit;
    }
    memcpy(gid, uverbs_gidp->uverbs_gids, sizeof (union ibv_gid) * count);
    free(uverbs_gidp);
    return (0);

gid_error_exit:
    free(uverbs_gidp);
    return (-1);
}

int
sol_ibv_query_pkey(struct ibv_context *context, uint8_t port_num,
    int index, uint16_t *pkey)
{
    int         count, start;
    sol_uverbs_pkey_t   *uverbs_pkeyp;

    /*
     * Not exported via sysfs, use ioctl.
     */
    if (!context || !pkey || (index < 0) ||
        ((port_num & 0x80) && (index == 0)))
        return (-1);

    if (context->cmd_fd < 0)
        return (-1);

    if (port_num & 0x80) {
        start = 0;
        count = index;
    } else {
        start = index;
        count = 1;
    }

    uverbs_pkeyp = (sol_uverbs_pkey_t *)malloc(count *
        sizeof (uint16_t) + sizeof (sol_uverbs_pkey_t));
    if (uverbs_pkeyp == NULL) {
        return (-1);
    }

    uverbs_pkeyp->uverbs_port_num = port_num & 0x7F;
    uverbs_pkeyp->uverbs_pkey_cnt = count;
    uverbs_pkeyp->uverbs_pkey_start_index = start;

    if (ioctl(context->cmd_fd, UVERBS_IOCTL_GET_PKEYS, uverbs_pkeyp) != 0) {
#ifdef  DEBUG
        fprintf(stderr, "UVERBS_IOCTL_GET_PKEYS failed: %s\n",
            strerror(errno));
#endif
        goto pkey_error_exit;
    }

    if (uverbs_pkeyp->uverbs_solaris_abi_version !=
        IB_USER_VERBS_SOLARIS_ABI_VERSION) {
#ifdef  DEBUG
        fprintf(stderr, "sol_uverbs solaris_abi_version != "
            "IB_USER_VERBS_SOLARIS_ABI_VERSION : %d\n",
            uverbs_pkeyp->uverbs_solaris_abi_version);
#endif
        goto pkey_error_exit;
    }
    memcpy(pkey, uverbs_pkeyp->uverbs_pkey, sizeof (uint16_t) * count);
    free(uverbs_pkeyp);
    return (0);

pkey_error_exit:
    free(uverbs_pkeyp);
    return (-1);
}

int
sol_ibv_query_device(struct ibv_device *device, struct ibv_device_attr *attr)
{
    struct ibv_query_device cmd;
    struct ibv_context  context;
    char            uverbs_devpath[MAX_OFS_DEVPATH_LEN];
    int         ret;
    uint64_t        raw_fw_ver;
    unsigned        major, minor, sub_minor;

    context.device = device;

    if (!device || !attr)
        return (-1);

    snprintf(uverbs_devpath, MAX_OFS_DEVPATH_LEN, "%s/%s",
        IB_OFS_DEVPATH_PREFIX, device->dev_name);

    if ((context.cmd_fd = open(uverbs_devpath, O_RDWR)) <  0)
        return (-1);

    ret = ibv_cmd_query_device(&context, attr, &raw_fw_ver, &cmd,
        sizeof (cmd));

    if (ret)
        return (ret);

    major     = (raw_fw_ver >> 32) & 0xffff;
    minor     = (raw_fw_ver >> 16) & 0xffff;
    sub_minor = raw_fw_ver & 0xffff;

    snprintf(attr->fw_ver, sizeof (attr->fw_ver),
        "%d.%d.%03d", major, minor, sub_minor);

    close(context.cmd_fd);
    return (0);
}

int
sol_ibv_query_port(struct ibv_context *context, uint8_t port,
    struct ibv_port_attr *attr)
{
    struct  ibv_query_port cmd;

    return (ibv_cmd_query_port(context, port, attr, &cmd, sizeof (cmd)));
}
#endif