/* * 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 2006 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 #include #include #include #include #include #include #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; /* * 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 *); /* * 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 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 */