sys/netgraph7/bluetooth/include/ng_bluetooth.h

   1 /*
   2  * bluetooth.h
   3  */
   4
   5 /*-
   6  * Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  *
  30  * $Id: ng_bluetooth.h,v 1.4 2003/04/26 22:32:34 max Exp $
  31  * $FreeBSD: src/sys/netgraph/bluetooth/include/ng_bluetooth.h,v 1.5 2008/04/15 21:15:32 mav Exp $
  32  */
  33
  34 #ifndef _NETGRAPH_BLUETOOTH_H_
  35 #define _NETGRAPH_BLUETOOTH_H_
  36
  37 #include <sys/queue.h>
  38
  39 /*
  40  * Version of the stack
  41  */
  42
  43 #define NG_BLUETOOTH_VERSION    1
  44
  45 /*
  46  * Declare the base of the Bluetooth sysctl hierarchy,
  47  * but only if this file cares about sysctl's
  48  */
  49
  50 #ifdef SYSCTL_DECL
  51 SYSCTL_DECL(_net_bluetooth);
  52 SYSCTL_DECL(_net_bluetooth_hci);
  53 SYSCTL_DECL(_net_bluetooth_l2cap);
  54 SYSCTL_DECL(_net_bluetooth_rfcomm);
  55 #endif /* SYSCTL_DECL */
  56
  57 /*
  58  * Mbuf qeueue and useful mbufq macros. We do not use ifqueue because we
  59  * do not need mutex and other locking stuff
  60  */
  61
  62 struct mbuf;
  63
  64 struct ng_bt_mbufq {
  65         struct mbuf     *head;   /* first item in the queue */
  66         struct mbuf     *tail;   /* last item in the queue */
  67         u_int32_t        len;    /* number of items in the queue */
  68         u_int32_t        maxlen; /* maximal number of items in the queue */
  69         u_int32_t        drops;  /* number if dropped items */
  70 };
  71 typedef struct ng_bt_mbufq      ng_bt_mbufq_t;
  72 typedef struct ng_bt_mbufq *    ng_bt_mbufq_p;
  73
  74 #define NG_BT_MBUFQ_INIT(q, _maxlen)                    \
  75         do {                                            \
  76                 (q)->head = NULL;                       \
  77                 (q)->tail = NULL;                       \
  78                 (q)->len = 0;                           \
  79                 (q)->maxlen = (_maxlen);                \
  80                 (q)->drops = 0;                         \
  81         } while (0)
  82
  83 #define NG_BT_MBUFQ_DESTROY(q)                          \
  84         do {                                            \
  85                 NG_BT_MBUFQ_DRAIN((q));                 \
  86         } while (0)
  87
  88 #define NG_BT_MBUFQ_FIRST(q)    (q)->head
  89
  90 #define NG_BT_MBUFQ_LEN(q)      (q)->len
  91
  92 #define NG_BT_MBUFQ_FULL(q)     ((q)->len >= (q)->maxlen)
  93
  94 #define NG_BT_MBUFQ_DROP(q)     (q)->drops ++
  95
  96 #define NG_BT_MBUFQ_ENQUEUE(q, i)                       \
  97         do {                                            \
  98                 (i)->m_nextpkt = NULL;                  \
  99                                                         \
 100                 if ((q)->tail == NULL)                  \
 101                         (q)->head = (i);                \
 102                 else                                    \
 103                         (q)->tail->m_nextpkt = (i);     \
 104                                                         \
 105                 (q)->tail = (i);                        \
 106                 (q)->len ++;                            \
 107         } while (0)
 108
 109 #define NG_BT_MBUFQ_DEQUEUE(q, i)                       \
 110         do {                                            \
 111                 (i) = (q)->head;                        \
 112                 if ((i) != NULL) {                      \
 113                         (q)->head = (q)->head->m_nextpkt; \
 114                         if ((q)->head == NULL)          \
 115                                 (q)->tail = NULL;       \
 116                                                         \
 117                         (q)->len --;                    \
 118                         (i)->m_nextpkt = NULL;          \
 119                 }                                       \
 120         } while (0)
 121
 122 #define NG_BT_MBUFQ_PREPEND(q, i)                       \
 123         do {                                            \
 124                 (i)->m_nextpkt = (q)->head;             \
 125                 if ((q)->tail == NULL)                  \
 126                         (q)->tail = (i);                \
 127                                                         \
 128                 (q)->head = (i);                        \
 129                 (q)->len ++;                            \
 130         } while (0)
 131
 132 #define NG_BT_MBUFQ_DRAIN(q)                            \
 133         do {                                            \
 134                 struct mbuf     *m = NULL;              \
 135                                                         \
 136                 for (;;) {                              \
 137                         NG_BT_MBUFQ_DEQUEUE((q), m);    \
 138                         if (m == NULL)                  \
 139                                 break;                  \
 140                                                         \
 141                         NG_FREE_M(m);                   \
 142                 }                                       \
 143         } while (0)
 144
 145 /*
 146  * Netgraph item queue and useful itemq macros
 147  */
 148
 149 struct ng_item;
 150
 151 struct ng_bt_itemq {
 152         STAILQ_HEAD(, ng_item)  queue;  /* actually items queue */
 153         u_int32_t        len;    /* number of items in the queue */
 154         u_int32_t        maxlen; /* maximal number of items in the queue */
 155         u_int32_t        drops;  /* number if dropped items */
 156 };
 157 typedef struct ng_bt_itemq      ng_bt_itemq_t;
 158 typedef struct ng_bt_itemq *    ng_bt_itemq_p;
 159
 160 #define NG_BT_ITEMQ_INIT(q, _maxlen)                    \
 161         do {                                            \
 162                 STAILQ_INIT(&(q)->queue);               \
 163                 (q)->len = 0;                           \
 164                 (q)->maxlen = (_maxlen);                \
 165                 (q)->drops = 0;                         \
 166         } while (0)
 167
 168 #define NG_BT_ITEMQ_DESTROY(q)                          \
 169         do {                                            \
 170                 NG_BT_ITEMQ_DRAIN((q));                 \
 171         } while (0)
 172
 173 #define NG_BT_ITEMQ_FIRST(q)    STAILQ_FIRST(&(q)->queue)
 174
 175 #define NG_BT_ITEMQ_LEN(q)      NG_BT_MBUFQ_LEN((q))
 176
 177 #define NG_BT_ITEMQ_FULL(q)     NG_BT_MBUFQ_FULL((q))
 178
 179 #define NG_BT_ITEMQ_DROP(q)     NG_BT_MBUFQ_DROP((q))
 180
 181 #define NG_BT_ITEMQ_ENQUEUE(q, i)                       \
 182         do {                                            \
 183                 STAILQ_INSERT_TAIL(&(q)->queue, (i), el_next);  \
 184                 (q)->len ++;                            \
 185         } while (0)
 186
 187 #define NG_BT_ITEMQ_DEQUEUE(q, i)                       \
 188         do {                                            \
 189                 (i) = STAILQ_FIRST(&(q)->queue);        \
 190                 if ((i) != NULL) {                      \
 191                         STAILQ_REMOVE_HEAD(&(q)->queue, el_next);       \
 192                         (q)->len --;                    \
 193                 }                                       \
 194         } while (0)
 195
 196 #define NG_BT_ITEMQ_PREPEND(q, i)                       \
 197         do {                                            \
 198                 STAILQ_INSERT_HEAD(&(q)->queue, (i), el_next);  \
 199                 (q)->len ++;                            \
 200         } while (0)
 201
 202 #define NG_BT_ITEMQ_DRAIN(q)                            \
 203         do {                                            \
 204                 struct ng_item  *i = NULL;              \
 205                                                         \
 206                 for (;;) {                              \
 207                         NG_BT_ITEMQ_DEQUEUE((q), i);    \
 208                         if (i == NULL)                  \
 209                                 break;                  \
 210                                                         \
 211                         NG_FREE_ITEM(i);                \
 212                 }                                       \
 213         } while (0)
 214
 215 /*
 216  * Get Bluetooth stack sysctl globals
 217  */
 218
 219 u_int32_t       bluetooth_hci_command_timeout   (void);
 220 u_int32_t       bluetooth_hci_connect_timeout   (void);
 221 u_int32_t       bluetooth_hci_max_neighbor_age  (void);
 222 u_int32_t       bluetooth_l2cap_rtx_timeout     (void);
 223 u_int32_t       bluetooth_l2cap_ertx_timeout    (void);
 224
 225 #endif /* _NETGRAPH_BLUETOOTH_H_ */
 226