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/*
* 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 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_DLD_IMPL_H
#define _SYS_DLD_IMPL_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/ethernet.h>
#include <sys/stream.h>
#include <sys/dlpi.h>
#include <sys/mac.h>
#include <sys/dls.h>
#include <sys/dld.h>
#ifdef __cplusplus
extern "C" {
#endif
#define DLD_CONTROL 0x00000001
#define DLD_DLPI 0x00000002
typedef enum {
DLD_UNITDATA,
DLD_FASTPATH,
DLD_RAW
} dld_str_mode_t;
typedef enum {
DLD_UNINITIALIZED,
DLD_PASSIVE,
DLD_ACTIVE
} dld_passivestate_t;
typedef struct dld_str dld_str_t;
/*
* dld_str_t object definition.
*/
struct dld_str {
/*
* Major number of the device
*/
major_t ds_major;
/*
* Ephemeral minor number for the object.
*/
minor_t ds_minor;
/*
* PPA number this stream is attached to.
*/
t_uscalar_t ds_ppa;
/*
* Read/write queues for the stream which the object represents.
*/
queue_t *ds_rq;
queue_t *ds_wq;
/*
* Lock to protect this structure.
*/
krwlock_t ds_lock;
/*
* Stream is open to DLD_CONTROL (control node) or
* DLD_DLPI (DLS provider) node.
*/
uint_t ds_type;
/*
* The following fields are only used for DLD_DLPI type objects.
*/
/*
* Current DLPI state.
*/
t_uscalar_t ds_dlstate;
/*
* DLPI style
*/
t_uscalar_t ds_style;
/*
* Currently bound DLSAP.
*/
uint16_t ds_sap;
/*
* Handle of the data-link channel that is used by this object.
*/
dls_channel_t ds_dc;
/*
* Handle of the MAC that is used by the data-link interface.
*/
mac_handle_t ds_mh;
/*
* VLAN identifier of the data-link interface.
*/
uint16_t ds_vid;
/*
* Promiscuity level information.
*/
uint32_t ds_promisc;
/*
* Immutable information of the MAC which the channel is using.
*/
const mac_info_t *ds_mip;
/*
* Current packet priority.
*/
uint_t ds_pri;
/*
* Handle of our MAC notification callback.
*/
mac_notify_handle_t ds_mnh;
/*
* Set of enabled DL_NOTE... notifications. (See dlpi.h).
*/
uint32_t ds_notifications;
/*
* Cached MAC unicast addresses.
*/
uint8_t ds_fact_addr[MAXMACADDRLEN];
uint8_t ds_curr_addr[MAXMACADDRLEN];
/*
* Mode: unitdata, fast-path or raw.
*/
dld_str_mode_t ds_mode;
/*
* Native mode state.
*/
boolean_t ds_native;
/*
* IP polling is operational if this flag is set.
*/
boolean_t ds_polling;
boolean_t ds_soft_ring;
/*
* LSO is enabled if ds_lso is set.
*/
boolean_t ds_lso;
uint64_t ds_lso_max;
/*
* State of DLPI user: may be active (regular network layer),
* passive (snoop-like monitoring), or unknown (not yet
* determined).
*/
dld_passivestate_t ds_passivestate;
/*
* Dummy mblk used for flow-control.
*/
mblk_t *ds_tx_flow_mp;
/*
* Internal transmit queue and its parameters.
*/
kmutex_t ds_tx_list_lock;
mblk_t *ds_tx_list_head;
mblk_t *ds_tx_list_tail;
uint_t ds_tx_cnt;
uint_t ds_tx_msgcnt;
boolean_t ds_tx_qbusy;
/*
* Number of threads currently in dld. If there is a pending
* request, it is placed in ds_pending_req and the operation
* will finish when dld becomes single-threaded.
*/
kmutex_t ds_thr_lock;
uint_t ds_thr;
uint_t ds_pending_cnt;
mblk_t *ds_pending_req;
task_func_t *ds_pending_op;
kcondvar_t ds_pending_cv;
} dld_str;
/*
* dld_str.c module.
*/
extern void dld_str_init(void);
extern int dld_str_fini(void);
extern dld_str_t *dld_str_create(queue_t *, uint_t, major_t,
t_uscalar_t);
extern void dld_str_destroy(dld_str_t *);
extern int dld_str_attach(dld_str_t *, t_uscalar_t);
extern void dld_str_detach(dld_str_t *);
extern void dld_str_rx_raw(void *, mac_resource_handle_t,
mblk_t *, mac_header_info_t *);
extern void dld_str_rx_fastpath(void *, mac_resource_handle_t,
mblk_t *, mac_header_info_t *);
extern void dld_str_rx_unitdata(void *, mac_resource_handle_t,
mblk_t *, mac_header_info_t *);
extern void dld_tx_flush(dld_str_t *);
extern void dld_tx_enqueue(dld_str_t *, mblk_t *, boolean_t);
extern void dld_str_notify_ind(dld_str_t *);
extern void str_mdata_fastpath_put(dld_str_t *, mblk_t *);
extern void dld_tx_single(dld_str_t *, mblk_t *);
/*
* dld_proto.c
*/
extern void dld_proto(dld_str_t *, mblk_t *);
extern void dld_finish_pending_ops(dld_str_t *);
extern void dld_capabilities_disable(dld_str_t *);
/*
* Options: there should be a separate bit defined here for each
* DLD_PROP... defined in dld.h.
*/
#define DLD_OPT_NO_FASTPATH 0x00000001
#define DLD_OPT_NO_POLL 0x00000002
#define DLD_OPT_NO_ZEROCOPY 0x00000004
#define DLD_OPT_NO_SOFTRING 0x00000008
extern uint32_t dld_opt;
/*
* Useful macros.
*/
#define IMPLY(p, c) (!(p) || (c))
#define DLD_ENTER(dsp) { \
mutex_enter(&dsp->ds_thr_lock); \
++dsp->ds_thr; \
ASSERT(dsp->ds_thr != 0); \
mutex_exit(&dsp->ds_thr_lock); \
}
#define DLD_EXIT(dsp) { \
mutex_enter(&dsp->ds_thr_lock); \
ASSERT(dsp->ds_thr > 0); \
if (--dsp->ds_thr == 0 && dsp->ds_pending_req != NULL) \
dld_finish_pending_ops(dsp); \
else \
mutex_exit(&dsp->ds_thr_lock); \
}
#define DLD_WAKEUP(dsp) { \
mutex_enter(&dsp->ds_thr_lock); \
ASSERT(dsp->ds_pending_cnt > 0); \
if (--dsp->ds_pending_cnt == 0) \
cv_signal(&dsp->ds_pending_cv); \
mutex_exit(&dsp->ds_thr_lock); \
}
#ifdef DEBUG
#define DLD_DBG cmn_err
#else
#define DLD_DBG if (0) cmn_err
#endif
#ifdef __cplusplus
}
#endif
#endif /* _SYS_DLD_IMPL_H */
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