io/dls/dls_stat.c

	dls_stat.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * Data-Link Services Module
 */

#include <sys/types.h>
#include <sys/sysmacros.h>
#include <sys/atomic.h>
#include <sys/ght.h>
#include <sys/kstat.h>
#include <sys/vlan.h>
#include <sys/mac.h>
#include <sys/ctype.h>
#include <sys/dls.h>
#include <sys/dls_impl.h>

typedef struct i_dls_stat_info_s {
    enum mac_stat   dsi_stat;
    char        *dsi_name;
    uint_t      dsi_type;
} i_mac_stat_info_t;

static i_mac_stat_info_t    i_dls_si[] = {
    { MAC_STAT_IFSPEED, "ifspeed", KSTAT_DATA_UINT64 },
    { MAC_STAT_MULTIRCV, "multircv", KSTAT_DATA_UINT32 },
    { MAC_STAT_BRDCSTRCV, "brdcstrcv", KSTAT_DATA_UINT32 },
    { MAC_STAT_MULTIXMT, "multixmt", KSTAT_DATA_UINT32 },
    { MAC_STAT_BRDCSTXMT, "brdcstxmt", KSTAT_DATA_UINT32 },
    { MAC_STAT_NORCVBUF, "norcvbuf", KSTAT_DATA_UINT32 },
    { MAC_STAT_IERRORS, "ierrors", KSTAT_DATA_UINT32 },
    { MAC_STAT_NOXMTBUF, "noxmtbuf", KSTAT_DATA_UINT32 },
    { MAC_STAT_OERRORS, "oerrors", KSTAT_DATA_UINT32 },
    { MAC_STAT_COLLISIONS, "collisions", KSTAT_DATA_UINT32 },
    { MAC_STAT_RBYTES, "rbytes", KSTAT_DATA_UINT32 },
    { MAC_STAT_IPACKETS, "ipackets", KSTAT_DATA_UINT32 },
    { MAC_STAT_OBYTES, "obytes", KSTAT_DATA_UINT32 },
    { MAC_STAT_OPACKETS, "opackets", KSTAT_DATA_UINT32 },
    { MAC_STAT_RBYTES, "rbytes64", KSTAT_DATA_UINT64 },
    { MAC_STAT_IPACKETS, "ipackets64", KSTAT_DATA_UINT64 },
    { MAC_STAT_OBYTES, "obytes64", KSTAT_DATA_UINT64 },
    { MAC_STAT_OPACKETS, "opackets64", KSTAT_DATA_UINT64 }
};

#define STAT_INFO_COUNT (sizeof (i_dls_si) / sizeof (i_dls_si[0]))

/*
 * Private functions.
 */

static int
i_dls_stat_update(kstat_t *ksp, int rw)
{
    dls_vlan_t  *dvp = ksp->ks_private;
    dls_link_t  *dlp = dvp->dv_dlp;
    kstat_named_t   *knp;
    uint_t      i;
    uint64_t    val;
    int     err;

    if (rw != KSTAT_READ)
        return (EACCES);

    if ((err = dls_mac_hold(dlp)) != 0)
        return (err);

    knp = (kstat_named_t *)ksp->ks_data;
    for (i = 0; i < STAT_INFO_COUNT; i++) {
        if (!(dlp->dl_mip->mi_stat[i_dls_si[i].dsi_stat]))
            continue;

        val = mac_stat_get(dlp->dl_mh, i_dls_si[i].dsi_stat);

        switch (i_dls_si[i].dsi_type) {
        case KSTAT_DATA_UINT64:
            knp->value.ui64 = val;
            break;
        case KSTAT_DATA_UINT32:
            knp->value.ui32 = (uint32_t)val;
            break;
        default:
            ASSERT(B_FALSE);
        }

        knp++;
    }

    knp->value.ui32 = dlp->dl_unknowns;
    dls_mac_rele(dlp);

    return (0);
}

/*
 * Exported functions.
 */

void
dls_stat_create(dls_vlan_t *dvp)
{
    dls_link_t      *dlp = dvp->dv_dlp;
    char            module[IFNAMSIZ];
    uint_t          instance;
    kstat_t         *ksp;
    kstat_named_t       *knp;
    uint_t          i;
    uint_t          count;
    int         err;

    if (dls_mac_hold(dlp) != 0)
        return;

    count = 0;
    for (i = 0; i < STAT_INFO_COUNT; i++) {
        if (dlp->dl_mip->mi_stat[i_dls_si[i].dsi_stat])
            count++;
    }

    err = ddi_parse(dvp->dv_name, module, &instance);
    ASSERT(err == DDI_SUCCESS);

    if ((ksp = kstat_create(module, instance, NULL, "net",
        KSTAT_TYPE_NAMED, count + 1, 0)) == NULL)
        goto done;

    ksp->ks_update = i_dls_stat_update;
    ksp->ks_private = (void *)dvp;
    dvp->dv_ksp = ksp;

    knp = (kstat_named_t *)ksp->ks_data;
    for (i = 0; i < STAT_INFO_COUNT; i++) {
        if (!(dlp->dl_mip->mi_stat[i_dls_si[i].dsi_stat]))
            continue;

        kstat_named_init(knp, i_dls_si[i].dsi_name,
            i_dls_si[i].dsi_type);
        knp++;
        --count;
    }
    ASSERT(count == 0);

    kstat_named_init(knp, "unknowns", KSTAT_DATA_UINT32);

    kstat_install(ksp);
done:
    dls_mac_rele(dlp);
}

void
dls_stat_destroy(dls_vlan_t *dvp)
{
    kstat_delete(dvp->dv_ksp);
    dvp->dv_ksp = NULL;
}