16863 implement C23 stdbit.h

[illumos-gate.git] / usr / src / uts / common / sys / mac_provider.h

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (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 (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2018, Joyent, Inc.
 * Copyright 2020 RackTop Systems, Inc.
 * Copyright 2023 Oxide Computer Company
 */

#ifndef _SYS_MAC_PROVIDER_H
#define _SYS_MAC_PROVIDER_H

#include <sys/types.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/stream.h>
#include <sys/mkdev.h>
#include <sys/mac.h>
#include <sys/mac_flow.h>

/*
 * MAC Provider Interface
 */

#ifdef  __cplusplus
extern "C" {
#endif

/*
 * MAC version identifiers. Drivers compiled against the stable V1 version
 * of the API should register with MAC_VERSION_V1. ON drivers should use
 * MAC_VERSION. This is used by mac_alloc() mac_register() to
 * verify that incompatible drivers don't register.
 */
#define MAC_VERSION_V1  0x1
#define MAC_VERSION     MAC_VERSION_V1

/*
 * Possible values for ETHER_STAT_XCVR_INUSE statistic.
 */

#define XCVR_UNDEFINED          0
#define XCVR_NONE               1
#define XCVR_10                 2
#define XCVR_100T4              3
#define XCVR_100X               4
#define XCVR_100T2              5
#define XCVR_1000X              6
#define XCVR_1000T              7

#ifdef  _KERNEL

/*
 * Definitions for MAC Drivers Capabilities
 */
/*
 * MAC layer capabilities.  These capabilities are handled by the drivers'
 * mc_capab_get() callbacks.  Some capabilities require the driver to fill
 * in a given data structure, and others are simply boolean capabilities.
 * Note that capability values must be powers of 2 so that consumers and
 * providers of this interface can keep track of which capabilities they
 * care about by keeping a bitfield of these things around somewhere.
 */
typedef enum {
        /*
         * Public Capabilities (MAC_VERSION_V1)
         */
        MAC_CAPAB_HCKSUM        = 0x00000001, /* data is a uint32_t */
        MAC_CAPAB_LSO           = 0x00000008, /* data is mac_capab_lso_t */

        /*
         * Reserved capabilities, do not use
         */
        MAC_CAPAB_RESERVED1     = 0x00000002,
        MAC_CAPAB_RESERVED2     = 0x00000004,

        /*
         * Private driver capabilities
         */
        MAC_CAPAB_RINGS         = 0x00000010, /* data is mac_capab_rings_t */
        MAC_CAPAB_SHARES        = 0x00000020, /* data is mac_capab_share_t */
        MAC_CAPAB_MULTIFACTADDR = 0x00000040, /* mac_data_multifactaddr_t */

        /*
         * Private driver capabilities for use by the GLDv3 framework only
         */
        MAC_CAPAB_VNIC          = 0x00010000, /* data is mac_capab_vnic_t */
        MAC_CAPAB_ANCHOR_VNIC   = 0x00020000, /* boolean only, no data */
        MAC_CAPAB_AGGR          = 0x00040000, /* data is mac_capab_aggr_t */
        MAC_CAPAB_NO_NATIVEVLAN = 0x00080000, /* boolean only, no data */
        MAC_CAPAB_NO_ZCOPY      = 0x00100000, /* boolean only, no data */
        MAC_CAPAB_LEGACY        = 0x00200000, /* data is mac_capab_legacy_t */
        MAC_CAPAB_VRRP          = 0x00400000, /* data is mac_capab_vrrp_t */
        MAC_CAPAB_OVERLAY       = 0x00800000, /* boolean only, no data */
        MAC_CAPAB_TRANSCEIVER   = 0x01000000, /* mac_capab_transceiver_t */
        MAC_CAPAB_LED           = 0x02000000  /* data is mac_capab_led_t */
} mac_capab_t;

/*
 * LSO capability
 */
typedef struct lso_basic_tcp_ipv4_s {
        t_uscalar_t     lso_max;                /* maximum payload */
} lso_basic_tcp_ipv4_t;

typedef struct lso_basic_tcp_ipv6_s {
        t_uscalar_t     lso_max;                /* maximum payload */
} lso_basic_tcp_ipv6_t;

/*
 * Currently supported flags for LSO.
 */
#define LSO_TX_BASIC_TCP_IPV4   0x01            /* TCPv4 LSO capability */
#define LSO_TX_BASIC_TCP_IPV6   0x02            /* TCPv6 LSO capability */

/*
 * Future LSO capabilities can be added at the end of the mac_capab_lso_t.
 * When such capability is added to the GLDv3 framework, the size of the
 * mac_capab_lso_t it allocates and passes to the drivers increases. Older
 * drivers wil access only the (upper) sections of that structure, that is the
 * sections carrying the capabilities they understand. This ensures the
 * interface can be safely extended in a binary compatible way.
 */
typedef struct mac_capab_lso_s {
        t_uscalar_t             lso_flags;
        lso_basic_tcp_ipv4_t    lso_basic_tcp_ipv4;
        lso_basic_tcp_ipv6_t    lso_basic_tcp_ipv6;
        /* Add future lso capabilities here */
} mac_capab_lso_t;

/*
 * Multiple Factory MAC Addresses Capability
 */
typedef struct mac_capab_multifactaddr_s {
        /*
         * Number of factory addresses
         */
        uint_t          mcm_naddr;

        /*
         * Callbacks to query all the factory addresses.
         */
        void            (*mcm_getaddr)(void *, uint_t, uint8_t *);
} mac_capab_multifactaddr_t;

/*
 * Info and callbacks of legacy devices.
 */
typedef struct mac_capab_legacy_s {
        /*
         * Notifications that the legacy device does not support.
         */
        uint32_t        ml_unsup_note;
        /*
         * dev_t of the legacy device; can be held to force attach.
         */
        dev_t           ml_dev;
        boolean_t       (*ml_active_set)(void *);
        void            (*ml_active_clear)(void *);
        int             (*ml_fastpath_disable)(void *);
        void            (*ml_fastpath_enable)(void *);
} mac_capab_legacy_t;

typedef struct __mac_prop_info_handle *mac_prop_info_handle_t;

/*
 * MAC driver entry point types.
 */
typedef int             (*mac_getstat_t)(void *, uint_t, uint64_t *);
typedef int             (*mac_start_t)(void *);
typedef void            (*mac_stop_t)(void *);
typedef int             (*mac_setpromisc_t)(void *, boolean_t);
typedef int             (*mac_multicst_t)(void *, boolean_t, const uint8_t *);
typedef int             (*mac_unicst_t)(void *, const uint8_t *);
typedef void            (*mac_ioctl_t)(void *, queue_t *, mblk_t *);
typedef void            (*mac_resources_t)(void *);
typedef mblk_t          *(*mac_tx_t)(void *, mblk_t *);
typedef boolean_t       (*mac_getcapab_t)(void *, mac_capab_t, void *);
typedef int             (*mac_open_t)(void *);
typedef void            (*mac_close_t)(void *);
typedef int             (*mac_set_prop_t)(void *, const char *, mac_prop_id_t,
                            uint_t, const void *);
typedef int             (*mac_get_prop_t)(void *, const char *, mac_prop_id_t,
                            uint_t, void *);
typedef void            (*mac_prop_info_t)(void *, const char *, mac_prop_id_t,
                            mac_prop_info_handle_t);

/*
 * Driver callbacks. The following capabilities are optional, and if
 * implemented by the driver, must have a corresponding MC_ flag set
 * in the mc_callbacks field.
 *
 * Any future additions to this list must also be accompanied by an
 * associated mc_callbacks flag so that the framework can grow without
 * affecting the binary compatibility of the interface.
 */
typedef struct mac_callbacks_s {
        uint_t          mc_callbacks;   /* Denotes which callbacks are set */
        mac_getstat_t   mc_getstat;     /* Get the value of a statistic */
        mac_start_t     mc_start;       /* Start the device */
        mac_stop_t      mc_stop;        /* Stop the device */
        mac_setpromisc_t mc_setpromisc; /* Enable or disable promiscuous mode */
        mac_multicst_t  mc_multicst;    /* Enable or disable a multicast addr */
        mac_unicst_t    mc_unicst;      /* Set the unicast MAC address */
        mac_tx_t        mc_tx;          /* Transmit a packet */
        void            *mc_reserved;   /* Reserved, do not use */
        mac_ioctl_t     mc_ioctl;       /* Process an unknown ioctl */
        mac_getcapab_t  mc_getcapab;    /* Get capability information */
        mac_open_t      mc_open;        /* Open the device */
        mac_close_t     mc_close;       /* Close the device */
        mac_set_prop_t  mc_setprop;
        mac_get_prop_t  mc_getprop;
        mac_prop_info_t mc_propinfo;
} mac_callbacks_t;

/*
 * Flags for mc_callbacks.  Requiring drivers to set the flags associated
 * with optional callbacks initialized in the structure allows the mac
 * module to add optional callbacks in the future without requiring drivers
 * to recompile.
 */
#define MC_RESERVED     0x0001
#define MC_IOCTL        0x0002
#define MC_GETCAPAB     0x0004
#define MC_OPEN         0x0008
#define MC_CLOSE        0x0010
#define MC_SETPROP      0x0020
#define MC_GETPROP      0x0040
#define MC_PROPINFO     0x0080
#define MC_PROPERTIES   (MC_SETPROP | MC_GETPROP | MC_PROPINFO)

/*
 * Virtualization Capabilities
 */

/*
 * The type of ring classification. This is used by MAC to determine
 * what, if any, processing it has to do upon receiving traffic on a
 * particular Rx ring.
 *
 * MAC_NO_CLASSIFIER
 *
 *      No classification has been set. No traffic should cross an Rx
 *      ring in this state.
 *
 * MAC_SW_CLASSIFIER
 *
 *      The driver delivers traffic for multiple clients to this ring.
 *      All traffic must be software classified by MAC to guarantee
 *      delivery to the correct client. This classification type may
 *      be chosen for several reasons.
 *
 *      o The driver provides only one group and there are multiple
 *        clients using the MAC.
 *
 *      o The driver provides some hardware filtering but not enough
 *        to fully classify the traffic. E.g., a VLAN VNIC requires L2
 *        unicast address filtering as well as VLAN filtering, but
 *        some drivers may only support the former.
 *
 *      o The ring belongs to the default group. The default group
 *        acts as a spillover for all clients that can't reserve an
 *        exclusive group. It also handles multicast traffic for all
 *        clients. For these reasons, the default group's rings are
 *        always software classified.
 *
 * MAC_HW_CLASSIFIER
 *
 *      The driver delivers traffic for a single MAC client across
 *      this ring. With this guarantee, MAC can simply pass the
 *      traffic up the stack or even allow polling of the ring.
 *
 * MAC_PASSTHRU_CLASSIFIER
 *
 *      The ring is in "passthru" mode. In this mode we bypass all of
 *      the typical MAC processing and pass the traffic directly to
 *      the mr_pt_fn callback, see mac_rx_common(). This is used in
 *      cases where there is another module acting as MAC provider on
 *      behalf of the driver. E.g., link aggregations use this mode to
 *      take full control of the port's rings; allowing it to enforce
 *      LACP protocols and aggregate rings across discrete drivers.
 */
typedef enum {
        MAC_NO_CLASSIFIER = 0,
        MAC_SW_CLASSIFIER,
        MAC_HW_CLASSIFIER,
        MAC_PASSTHRU_CLASSIFIER
} mac_classify_type_t;

typedef void    (*mac_rx_func_t)(void *, mac_resource_handle_t, mblk_t *,
    boolean_t);

/*
 * The virtualization level conveys the extent of the NIC hardware assistance
 * for traffic steering employed for virtualization:
 *
 * MAC_VIRT_NONE:       No assist for v12n.
 *
 * MAC_VIRT_LEVEL1:     Multiple Rx rings with MAC address level
 *                      classification between groups of rings.
 *                      Requires the support of the MAC_CAPAB_RINGS
 *                      capability.
 *
 * MAC_VIRT_HIO:        Hybrid I/O capable MAC. Require the support
 *                      of the MAC_CAPAB_SHARES capability.
 */
#define MAC_VIRT_NONE           0x0
#define MAC_VIRT_LEVEL1         0x1
#define MAC_VIRT_HIO            0x2

typedef enum {
        MAC_RING_TYPE_RX = 1,   /* Receive ring */
        MAC_RING_TYPE_TX        /* Transmit ring */
} mac_ring_type_t;

/*
 * The value VLAN_ID_NONE (VID 0) means a client does not have
 * membership to any VLAN. However, this statement is true for both
 * untagged packets and priority tagged packets leading to confusion
 * over what semantic is intended. To the provider, VID 0 is a valid
 * VID when priority tagging is in play. To MAC and everything above
 * VLAN_ID_NONE almost universally implies untagged traffic. Thus, we
 * convert VLAN_ID_NONE to a sentinel value (MAC_VLAN_UNTAGGED) at the
 * border between MAC and MAC provider. This informs the provider that
 * the client is interested in untagged traffic and the provider
 * should set any relevant bits to receive such traffic.
 *
 * Currently, the API between MAC and the provider passes the VID as a
 * unit16_t. In the future this could actually be the entire TCI mask
 * (PCP, DEI, and VID). This current scheme is safe in that potential
 * future world as well; as 0xFFFF is not a valid TCI (the 0xFFF VID
 * is reserved and never transmitted across networks).
 */
#define MAC_VLAN_UNTAGGED               UINT16_MAX
#define MAC_VLAN_UNTAGGED_VID(vid)      \
        (((vid) == VLAN_ID_NONE) ? MAC_VLAN_UNTAGGED : (vid))

/*
 * Grouping type of a ring group
 *
 * MAC_GROUP_TYPE_STATIC: The ring group can not be re-grouped.
 * MAC_GROUP_TYPE_DYNAMIC: The ring group support dynamic re-grouping
 */
typedef enum {
        MAC_GROUP_TYPE_STATIC = 1,      /* Static ring group */
        MAC_GROUP_TYPE_DYNAMIC          /* Dynamic ring group */
} mac_group_type_t;

typedef struct __mac_ring_driver        *mac_ring_driver_t;
typedef struct __mac_group_driver       *mac_group_driver_t;

typedef struct mac_ring_info_s mac_ring_info_t;
typedef struct mac_group_info_s mac_group_info_t;

typedef void    (*mac_get_ring_t)(void *, mac_ring_type_t, const int, const int,
    mac_ring_info_t *, mac_ring_handle_t);
typedef void    (*mac_get_group_t)(void *, mac_ring_type_t, const int,
    mac_group_info_t *, mac_group_handle_t);

typedef void    (*mac_group_add_ring_t)(mac_group_driver_t,
    mac_ring_driver_t, mac_ring_type_t);
typedef void    (*mac_group_rem_ring_t)(mac_group_driver_t,
    mac_ring_driver_t, mac_ring_type_t);

/*
 * Multiple Rings Capability
 */
typedef struct  mac_capab_rings_s {
        mac_ring_type_t         mr_type;        /* Ring type: Rx vs Tx */
        mac_group_type_t        mr_group_type;  /* Dynamic vs static grouping */
        uint_t                  mr_rnum;        /* Number of rings */
        uint_t                  mr_gnum;        /* Number of ring groups */
        mac_get_ring_t          mr_rget;        /* Get ring from driver */
        mac_get_group_t         mr_gget;        /* Get ring group from driver */
        mac_group_add_ring_t    mr_gaddring;    /* Add ring into a group */
        mac_group_rem_ring_t    mr_gremring;    /* Remove ring from a group */
} mac_capab_rings_t;

/*
 * Common ring functions and driver interfaces
 */
typedef int     (*mac_ring_start_t)(mac_ring_driver_t, uint64_t);
typedef void    (*mac_ring_stop_t)(mac_ring_driver_t);

typedef mblk_t  *(*mac_ring_send_t)(void *, mblk_t *);
typedef mblk_t  *(*mac_ring_poll_t)(void *, int);

typedef int     (*mac_ring_stat_t)(mac_ring_driver_t, uint_t, uint64_t *);

typedef struct mac_ring_info_s {
        mac_ring_driver_t       mri_driver;
        mac_ring_start_t        mri_start;
        mac_ring_stop_t         mri_stop;
        mac_intr_t              mri_intr;
        union {
                mac_ring_send_t send;
                mac_ring_poll_t poll;
        } mrfunion;
        mac_ring_stat_t         mri_stat;

        /*
         * mri_flags will have some bits set to indicate some special
         * property/feature of a ring like serialization needed for a
         * Tx ring or packets should always need enqueuing on Rx side,
         * etc.
         */
        uint_t                  mri_flags;
} mac_ring_info_s;

#define mri_tx                  mrfunion.send
#define mri_poll                mrfunion.poll

/*
 * #defines for mri_flags. The flags are temporary flags that are provided
 * only to workaround issues in specific drivers, and they will be
 * removed in the future.
 *
 * These are consumed only by sun4v and neptune (nxge).
 */
#define MAC_RING_TX_SERIALIZE           0x1
#define MAC_RING_RX_ENQUEUE             0x2

typedef int     (*mac_group_start_t)(mac_group_driver_t);
typedef void    (*mac_group_stop_t)(mac_group_driver_t);
typedef int     (*mac_add_mac_addr_t)(void *, const uint8_t *);
typedef int     (*mac_rem_mac_addr_t)(void *, const uint8_t *);
typedef int     (*mac_add_vlan_filter_t)(mac_group_driver_t, uint16_t);
typedef int     (*mac_rem_vlan_filter_t)(mac_group_driver_t, uint16_t);

struct mac_group_info_s {
        mac_group_driver_t      mgi_driver;     /* Driver reference */
        mac_group_start_t       mgi_start;      /* Start the group */
        mac_group_stop_t        mgi_stop;       /* Stop the group */
        uint_t                  mgi_count;      /* Count of rings */
        mac_intr_t              mgi_intr;       /* Optional per-group intr */

        /* Only used for Rx groups */
        mac_add_mac_addr_t      mgi_addmac;     /* Add a MAC address */
        mac_rem_mac_addr_t      mgi_remmac;     /* Remove a MAC address */
        mac_add_vlan_filter_t   mgi_addvlan;    /* Add a VLAN filter */
        mac_rem_vlan_filter_t   mgi_remvlan;    /* Remove a VLAN filter */
};

/*
 * Share management functions.
 */
typedef uint64_t mac_share_handle_t;

/*
 * Allocate and free a share. Returns ENOSPC if all shares have been
 * previously allocated.
 */
typedef int (*mac_alloc_share_t)(void *, mac_share_handle_t *);
typedef void (*mac_free_share_t)(mac_share_handle_t);

/*
 * Bind and unbind a share. Binding a share allows a domain
 * to have direct access to the groups and rings associated with
 * that share.
 */
typedef int (*mac_bind_share_t)(mac_share_handle_t, uint64_t, uint64_t *);
typedef void (*mac_unbind_share_t)(mac_share_handle_t);

/*
 * Return information on about a share.
 */
typedef void (*mac_share_query_t)(mac_share_handle_t, mac_ring_type_t,
    mac_ring_handle_t *, uint_t *);

/*
 * Basic idea, bind previously created ring groups to shares
 * for them to be exported (or shared) by another domain.
 * These interfaces bind/unbind the ring group to a share.
 * The groups and their rings will be shared with the guest
 * as soon as the share is bound.
 */
typedef int (*mac_share_add_group_t)(mac_share_handle_t,
    mac_group_driver_t);
typedef int (*mac_share_rem_group_t)(mac_share_handle_t,
    mac_group_driver_t);

typedef struct  mac_capab_share_s {
        uint_t                  ms_snum;        /* Number of shares (vr's) */
        void                    *ms_handle;     /* Handle to driver. */
        mac_alloc_share_t       ms_salloc;      /* Get a share from driver. */
        mac_free_share_t        ms_sfree;       /* Return a share to driver. */
        mac_share_add_group_t   ms_sadd;        /* Add a group to the share. */
        mac_share_rem_group_t   ms_sremove;     /* Remove group from share. */
        mac_share_query_t       ms_squery;      /* Query share constraints */
        mac_bind_share_t        ms_sbind;       /* Bind a share */
        mac_unbind_share_t      ms_sunbind;     /* Unbind a share */
} mac_capab_share_t;

typedef struct mac_capab_vrrp_s {
        /* IPv6 or IPv4? */
        int             mcv_af;
} mac_capab_vrrp_t;

/*
 * Transceiver capability
 */
typedef struct mac_transceiver_info mac_transceiver_info_t;

typedef struct mac_capab_transceiver {
        uint_t  mct_flags;
        uint_t  mct_ntransceivers;
        int     (*mct_info)(void *, uint_t, mac_transceiver_info_t *);
        int     (*mct_read)(void *, uint_t, uint_t, void *, size_t, off_t,
                    size_t *);
} mac_capab_transceiver_t;

/*
 * LED capability
 */
typedef struct mac_capab_led {
        uint_t          mcl_flags;
        mac_led_mode_t  mcl_modes;
        int             (*mcl_set)(void *, mac_led_mode_t, uint_t);
} mac_capab_led_t;

/*
 * MAC registration interface
 */
typedef struct mac_register_s {
        uint_t                  m_version;      /* set by mac_alloc() */
        const char              *m_type_ident;
        void                    *m_driver;      /* Driver private data */
        dev_info_t              *m_dip;
        uint_t                  m_instance;
        uint8_t                 *m_src_addr;
        uint8_t                 *m_dst_addr;
        mac_callbacks_t         *m_callbacks;
        uint_t                  m_min_sdu;
        uint_t                  m_max_sdu;
        void                    *m_pdata;
        size_t                  m_pdata_size;
        char                    **m_priv_props;
        uint32_t                m_margin;
        uint32_t                m_v12n;         /* Virtualization level */
        uint_t                  m_multicast_sdu;
} mac_register_t;

/*
 * Driver interface functions.
 */
extern mac_protect_t            *mac_protect_get(mac_handle_t);
extern void                     mac_sdu_get(mac_handle_t, uint_t *, uint_t *);
extern void                     mac_sdu_get2(mac_handle_t, uint_t *, uint_t *,
                                    uint_t *);
extern int                      mac_maxsdu_update(mac_handle_t, uint_t);
extern int                      mac_maxsdu_update2(mac_handle_t, uint_t,
                                    uint_t);

extern mac_register_t           *mac_alloc(uint_t);
extern void                     mac_free(mac_register_t *);
extern int                      mac_register(mac_register_t *, mac_handle_t *);
extern int                      mac_disable_nowait(mac_handle_t);
extern int                      mac_disable(mac_handle_t);
extern int                      mac_unregister(mac_handle_t);
extern void                     mac_rx(mac_handle_t, mac_resource_handle_t,
                                    mblk_t *);
extern void                     mac_rx_ring(mac_handle_t, mac_ring_handle_t,
                                    mblk_t *, uint64_t);
extern void                     mac_link_update(mac_handle_t, link_state_t);
extern void                     mac_link_redo(mac_handle_t, link_state_t);
extern void                     mac_unicst_update(mac_handle_t,
                                    const uint8_t *);
extern void                     mac_dst_update(mac_handle_t, const uint8_t *);
extern void                     mac_tx_update(mac_handle_t);
extern void                     mac_tx_ring_update(mac_handle_t,
                                    mac_ring_handle_t);
extern void                     mac_capab_update(mac_handle_t);
extern int                      mac_pdata_update(mac_handle_t, void *,
                                    size_t);
extern void                     mac_multicast_refresh(mac_handle_t,
                                    mac_multicst_t, void *, boolean_t);
extern void                     mac_unicst_refresh(mac_handle_t, mac_unicst_t,
                                    void *);
extern void                     mac_promisc_refresh(mac_handle_t,
                                    mac_setpromisc_t, void *);
extern boolean_t                mac_margin_update(mac_handle_t, uint32_t);
extern void                     mac_margin_get(mac_handle_t, uint32_t *);
extern int                      mac_margin_remove(mac_handle_t, uint32_t);
extern int                      mac_margin_add(mac_handle_t, uint32_t *,
                                    boolean_t);
extern void                     mac_init_ops(struct dev_ops *, const char *);
extern void                     mac_fini_ops(struct dev_ops *);
extern int                      mac_devt_to_instance(dev_t);
extern int                      mac_getinfo(dev_info_t *, ddi_info_cmd_t,
                                    void *, void **);
extern minor_t                  mac_private_minor(void);
extern void                     mac_ring_intr_set(mac_ring_handle_t,
                                    ddi_intr_handle_t);


extern mactype_register_t       *mactype_alloc(uint_t);
extern void                     mactype_free(mactype_register_t *);
extern int                      mactype_register(mactype_register_t *);
extern int                      mactype_unregister(const char *);

extern boolean_t                mac_unicst_verify(mac_handle_t,
                                    const uint8_t *, uint_t);

extern int                      mac_group_add_ring(mac_group_handle_t, int);
extern void                     mac_group_rem_ring(mac_group_handle_t,
                                    mac_ring_handle_t);
extern mac_ring_handle_t        mac_find_ring(mac_group_handle_t, int);

extern void                     mac_prop_info_set_default_uint8(
                                    mac_prop_info_handle_t, uint8_t);
extern void                     mac_prop_info_set_default_str(
                                    mac_prop_info_handle_t, const char *);
extern void                     mac_prop_info_set_default_uint64(
                                    mac_prop_info_handle_t, uint64_t);
extern void                     mac_prop_info_set_default_uint32(
                                    mac_prop_info_handle_t, uint32_t);
extern void                     mac_prop_info_set_default_link_flowctrl(
                                    mac_prop_info_handle_t, link_flowctrl_t);
extern void                     mac_prop_info_set_default_fec(
                                    mac_prop_info_handle_t, link_fec_t);
extern void                     mac_prop_info_set_range_uint32(
                                    mac_prop_info_handle_t,
                                    uint32_t, uint32_t);
extern void                     mac_prop_info_set_perm(mac_prop_info_handle_t,
                                    uint8_t);

extern void                     mac_hcksum_get(const mblk_t *, uint32_t *,
                                    uint32_t *, uint32_t *, uint32_t *,
                                    uint32_t *);
extern void                     mac_hcksum_set(mblk_t *, uint32_t, uint32_t,
                                    uint32_t, uint32_t, uint32_t);
extern void                     mac_hcksum_clone(const mblk_t *, mblk_t *);

extern void                     mac_lso_get(mblk_t *, uint32_t *, uint32_t *);

extern void                     mac_transceiver_info_set_present(
                                    mac_transceiver_info_t *,
                                    boolean_t);
extern void                     mac_transceiver_info_set_usable(
                                    mac_transceiver_info_t *,
                                    boolean_t);

/*
 * This represents a provisional set of currently illumos-private APIs to get
 * information about a mblk_t chain's type. This is an evolving interface.
 */
typedef enum mac_ether_offload_flags {
        MEOI_L2INFO_SET         = 1 << 0,
        MEOI_VLAN_TAGGED        = 1 << 1,
        MEOI_L3INFO_SET         = 1 << 2,
        MEOI_L4INFO_SET         = 1 << 3
} mac_ether_offload_flags_t;

typedef struct mac_ether_offload_info {
        mac_ether_offload_flags_t       meoi_flags;     /* What's valid? */
        size_t          meoi_len;       /* Total message length */
        uint8_t         meoi_l2hlen;    /* How long is the Ethernet header? */
        uint16_t        meoi_l3proto;   /* What's the Ethertype */
        uint16_t        meoi_l3hlen;    /* How long is the header? */
        uint8_t         meoi_l4proto;   /* What is the payload type? */
        uint8_t         meoi_l4hlen;    /* How long is the L4 header */
} mac_ether_offload_info_t;

extern int                      mac_ether_offload_info(mblk_t *,
                                    mac_ether_offload_info_t *);


#endif  /* _KERNEL */

#ifdef  __cplusplus
}
#endif

#endif /* _SYS_MAC_PROVIDER_H */