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   1 /*
   2  *      IrNET protocol module : Synchronous PPP over an IrDA socket.
   3  *
   4  *              Jean II - HPL `00 - <jt@hpl.hp.com>
   5  *
   6  * This file contains all definitions and declarations necessary for the
   7  * IRDA part of the IrNET module (dealing with IrTTP, IrIAS and co).
   8  * This file is a private header, so other modules don't want to know
   9  * what's in there...
  10  */
  11
  12 #ifndef IRNET_IRDA_H
  13 #define IRNET_IRDA_H
  14
  15 /***************************** INCLUDES *****************************/
  16 /* Please add other headers in irnet.h */
  17
  18 #include "irnet.h"              /* Module global include */
  19
  20 /************************ CONSTANTS & MACROS ************************/
  21
  22 /*
  23  * Name of the service (socket name) used by IrNET
  24  */
  25 /* IAS object name (or part of it) */
  26 #define IRNET_SERVICE_NAME      "IrNetv1"
  27 /* IAS attribute */
  28 #define IRNET_IAS_VALUE         "IrDA:TinyTP:LsapSel"
  29 /* LMP notify name for client (only for /proc/net/irda/irlmp) */
  30 #define IRNET_NOTIFY_NAME       "IrNET socket"
  31 /* LMP notify name for server (only for /proc/net/irda/irlmp) */
  32 #define IRNET_NOTIFY_NAME_SERV  "IrNET server"
  33
  34 /****************************** TYPES ******************************/
  35
  36 /*
  37  * This is the main structure where we store all the data pertaining to
  38  * the IrNET server (listen for connection requests) and the root
  39  * of the IrNET socket list
  40  */
  41 typedef struct irnet_root
  42 {
  43   irnet_socket          s;              /* To pretend we are a client... */
  44
  45   /* Generic stuff */
  46   int                   magic;          /* Paranoia */
  47   int                   running;        /* Are we operational ? */
  48
  49   /* Link list of all IrNET instances opened */
  50   hashbin_t *           list;
  51   spinlock_t            spinlock;       /* Serialize access to the list */
  52   /* Note : the way hashbin has been designed is absolutely not
  53    * reentrant, beware... So, we blindly protect all with spinlock */
  54
  55   /* Handle for the hint bit advertised in IrLMP */
  56   void *                skey;
  57
  58   /* Server socket part */
  59   struct ias_object *   ias_obj;        /* Our service name + lsap in IAS */
  60
  61 } irnet_root;
  62
  63
  64 /**************************** PROTOTYPES ****************************/
  65
  66 /* ----------------------- CONTROL CHANNEL ----------------------- */
  67 static void
  68         irnet_post_event(irnet_socket *,
  69                          irnet_event,
  70                          __u32,
  71                          __u32,
  72                          char *,
  73                          __u16);
  74 /* ----------------------- IRDA SUBROUTINES ----------------------- */
  75 static inline int
  76         irnet_open_tsap(irnet_socket *);
  77 static inline __u8
  78         irnet_ias_to_tsap(irnet_socket *,
  79                           int,
  80                           struct ias_value *);
  81 static inline int
  82         irnet_find_lsap_sel(irnet_socket *);
  83 static inline int
  84         irnet_connect_tsap(irnet_socket *);
  85 static inline int
  86         irnet_discover_next_daddr(irnet_socket *);
  87 static inline int
  88         irnet_discover_daddr_and_lsap_sel(irnet_socket *);
  89 static inline int
  90         irnet_dname_to_daddr(irnet_socket *);
  91 /* ------------------------ SERVER SOCKET ------------------------ */
  92 static inline int
  93         irnet_daddr_to_dname(irnet_socket *);
  94 static inline irnet_socket *
  95         irnet_find_socket(irnet_socket *);
  96 static inline int
  97         irnet_connect_socket(irnet_socket *,
  98                              irnet_socket *,
  99                              struct qos_info *,
 100                              __u32,
 101                              __u8);
 102 static inline void
 103         irnet_disconnect_server(irnet_socket *,
 104                                 struct sk_buff *);
 105 static inline int
 106         irnet_setup_server(void);
 107 static inline void
 108         irnet_destroy_server(void);
 109 /* ---------------------- IRDA-TTP CALLBACKS ---------------------- */
 110 static int
 111         irnet_data_indication(void *,           /* instance */
 112                               void *,           /* sap */
 113                               struct sk_buff *);
 114 static void
 115         irnet_disconnect_indication(void *,
 116                                     void *,
 117                                     LM_REASON,
 118                                     struct sk_buff *);
 119 static void
 120         irnet_connect_confirm(void *,
 121                               void *,
 122                               struct qos_info *,
 123                               __u32,
 124                               __u8,
 125                               struct sk_buff *);
 126 static void
 127         irnet_flow_indication(void *,
 128                               void *,
 129                               LOCAL_FLOW);
 130 static void
 131         irnet_status_indication(void *,
 132                                 LINK_STATUS,
 133                                 LOCK_STATUS);
 134 static void
 135         irnet_connect_indication(void *,
 136                                  void *,
 137                                  struct qos_info *,
 138                                  __u32,
 139                                  __u8,
 140                                  struct sk_buff *);
 141 /* -------------------- IRDA-IAS/LMP CALLBACKS -------------------- */
 142 static void
 143         irnet_getvalue_confirm(int,
 144                                __u16,
 145                                struct ias_value *,
 146                                void *);
 147 static void
 148         irnet_discovervalue_confirm(int,
 149                                     __u16,
 150                                     struct ias_value *,
 151                                     void *);
 152 #ifdef DISCOVERY_EVENTS
 153 static void
 154         irnet_discovery_indication(discinfo_t *,
 155                                    DISCOVERY_MODE,
 156                                    void *);
 157 static void
 158         irnet_expiry_indication(discinfo_t *,
 159                                 DISCOVERY_MODE,
 160                                 void *);
 161 #endif
 162
 163 /**************************** VARIABLES ****************************/
 164
 165 /*
 166  * The IrNET server. Listen to connection requests and co...
 167  */
 168 static struct irnet_root        irnet_server;
 169
 170 /* Control channel stuff (note : extern) */
 171 struct irnet_ctrl_channel       irnet_events;
 172
 173 /* The /proc/net/irda directory, defined elsewhere... */
 174 #ifdef CONFIG_PROC_FS
 175 extern struct proc_dir_entry *proc_irda;
 176 #endif /* CONFIG_PROC_FS */
 177
 178 #endif /* IRNET_IRDA_H */