/* * 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 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _SYS_DLD_IMPL_H #define _SYS_DLD_IMPL_H #include #include #include #include #include #include #include #include #ifdef __cplusplus extern "C" { #endif #define DLD_CONTROL_MINOR_NAME "ctl" #define DLD_CONTROL_MINOR 0 #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; typedef void (*dld_tx_t)(struct dld_str *, mblk_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; /* * 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; timeout_id_t ds_tx_qdepth_tid; boolean_t ds_tx_qbusy; dld_tx_t ds_tx; dld_tx_t ds_unitdata_tx; kmutex_t ds_tx_lock; kcondvar_t ds_tx_cv; uint32_t ds_intx_cnt; boolean_t ds_detaching; /* * Pending control messages to be processed. */ mblk_t *ds_pending_head; mblk_t *ds_pending_tail; taskqid_t ds_tid; kmutex_t ds_disp_lock; kcondvar_t ds_disp_cv; boolean_t ds_closing; /* * Used to process ioctl message for control node. See comments * above dld_ioctl(). */ void (*ds_ioctl)(queue_t *, mblk_t *); }; #define DLD_TX_ENTER(dsp) { \ mutex_enter(&(dsp)->ds_tx_lock); \ (dsp)->ds_intx_cnt++; \ mutex_exit(&(dsp)->ds_tx_lock); \ } #define DLD_TX_EXIT(dsp) { \ mutex_enter(&(dsp)->ds_tx_lock); \ if ((--(dsp)->ds_intx_cnt == 0) && (dsp)->ds_detaching) \ cv_signal(&(dsp)->ds_tx_cv); \ mutex_exit(&(dsp)->ds_tx_lock); \ } /* * Quiesce the traffic. */ #define DLD_TX_QUIESCE(dsp) { \ mutex_enter(&(dsp)->ds_tx_lock); \ (dsp)->ds_tx = (dsp)->ds_unitdata_tx = NULL; \ (dsp)->ds_detaching = B_TRUE; \ while ((dsp)->ds_intx_cnt != 0) \ cv_wait(&(dsp)->ds_tx_cv, &(dsp)->ds_tx_lock); \ (dsp)->ds_detaching = B_FALSE; \ mutex_exit(&(dsp)->ds_tx_lock); \ } /* * 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_str_notify_ind(dld_str_t *); extern void dld_tx_single(dld_str_t *, mblk_t *); extern void str_mdata_fastpath_put(dld_str_t *, mblk_t *); extern void str_mdata_raw_put(dld_str_t *, mblk_t *); extern void dld_ioctl(queue_t *, mblk_t *); extern void dld_finish_pending_task(dld_str_t *); /* * dld_proto.c */ extern void dld_wput_proto_nondata(dld_str_t *, mblk_t *); extern void dld_wput_proto_data(dld_str_t *, mblk_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; /* * autopush information */ typedef struct dld_ap { datalink_id_t da_linkid; struct dlautopush da_ap; #define da_anchor da_ap.dap_anchor #define da_npush da_ap.dap_npush #define da_aplist da_ap.dap_aplist } dld_ap_t; /* * Useful macros. */ #define IMPLY(p, c) (!(p) || (c)) #ifdef DEBUG #define DLD_DBG cmn_err #else #define DLD_DBG if (0) cmn_err #endif #ifdef __cplusplus } #endif #endif /* _SYS_DLD_IMPL_H */