include/linux/caif/caif_socket.h

   1 /* linux/caif_socket.h
   2  * CAIF Definitions for CAIF socket and network layer
   3  * Copyright (C) ST-Ericsson AB 2010
   4  * Author:       Sjur Brendeland/ sjur.brandeland@stericsson.com
   5  * License terms: GNU General Public License (GPL) version 2
   6  */
   7
   8 #ifndef _LINUX_CAIF_SOCKET_H
   9 #define _LINUX_CAIF_SOCKET_H
  10
  11 #include <linux/types.h>
  12 #include <linux/socket.h>
  13
  14 /**
  15  * enum caif_link_selector -    Physical Link Selection.
  16  * @CAIF_LINK_HIGH_BANDW:       Physical interface for high-bandwidth
  17  *                              traffic.
  18  * @CAIF_LINK_LOW_LATENCY:      Physical interface for low-latency
  19  *                              traffic.
  20  *
  21  * CAIF Link Layers can register their link properties.
  22  * This enum is used for choosing between CAIF Link Layers when
  23  * setting up CAIF Channels when multiple CAIF Link Layers exists.
  24  */
  25 enum caif_link_selector {
  26         CAIF_LINK_HIGH_BANDW,
  27         CAIF_LINK_LOW_LATENCY
  28 };
  29
  30 /**
  31  * enum caif_channel_priority - CAIF channel priorities.
  32  *
  33  * @CAIF_PRIO_MIN:      Min priority for a channel.
  34  * @CAIF_PRIO_LOW:      Low-priority channel.
  35  * @CAIF_PRIO_NORMAL:   Normal/default priority level.
  36  * @CAIF_PRIO_HIGH:     High priority level
  37  * @CAIF_PRIO_MAX:      Max priority for channel
  38  *
  39  * Priority can be set on CAIF Channels in order to
  40  * prioritize between traffic on different CAIF Channels.
  41  * These priority levels are recommended, but the priority value
  42  * is not restricted to the values defined in this enum, any value
  43  * between CAIF_PRIO_MIN and CAIF_PRIO_MAX could be used.
  44  */
  45 enum caif_channel_priority {
  46         CAIF_PRIO_MIN    = 0x01,
  47         CAIF_PRIO_LOW    = 0x04,
  48         CAIF_PRIO_NORMAL = 0x0f,
  49         CAIF_PRIO_HIGH   = 0x14,
  50         CAIF_PRIO_MAX    = 0x1F
  51 };
  52
  53 /**
  54  * enum caif_protocol_type  -   CAIF Channel type.
  55  * @CAIFPROTO_AT:               Classic AT channel.
  56  * @CAIFPROTO_DATAGRAM: Datagram channel.
  57  * @CAIFPROTO_DATAGRAM_LOOP:    Datagram loopback channel, used for testing.
  58  * @CAIFPROTO_UTIL:             Utility (Psock) channel.
  59  * @CAIFPROTO_RFM:              Remote File Manager
  60  * @CAIFPROTO_DEBUG:            Debug link
  61  *
  62  * This enum defines the CAIF Channel type to be used. This defines
  63  * the service to connect to on the modem.
  64  */
  65 enum caif_protocol_type {
  66         CAIFPROTO_AT,
  67         CAIFPROTO_DATAGRAM,
  68         CAIFPROTO_DATAGRAM_LOOP,
  69         CAIFPROTO_UTIL,
  70         CAIFPROTO_RFM,
  71         CAIFPROTO_DEBUG,
  72         _CAIFPROTO_MAX
  73 };
  74 #define CAIFPROTO_MAX _CAIFPROTO_MAX
  75
  76 /**
  77  * enum caif_at_type - AT Service Endpoint
  78  * @CAIF_ATTYPE_PLAIN:       Connects to a plain vanilla AT channel.
  79  */
  80 enum caif_at_type {
  81         CAIF_ATTYPE_PLAIN = 2
  82 };
  83  /**
  84  * enum caif_debug_type - Content selection for debug connection
  85  * @CAIF_DEBUG_TRACE_INTERACTIVE: Connection will contain
  86  *                              both trace and interactive debug.
  87  * @CAIF_DEBUG_TRACE:           Connection contains trace only.
  88  * @CAIF_DEBUG_INTERACTIVE:     Connection to interactive debug.
  89  */
  90 enum caif_debug_type {
  91         CAIF_DEBUG_TRACE_INTERACTIVE = 0,
  92         CAIF_DEBUG_TRACE,
  93         CAIF_DEBUG_INTERACTIVE,
  94 };
  95
  96 /**
  97  * enum caif_debug_service - Debug Service Endpoint
  98  * @CAIF_RADIO_DEBUG_SERVICE:   Debug service on the Radio sub-system
  99  * @CAIF_APP_DEBUG_SERVICE:     Debug for the applications sub-system
 100  */
 101 enum caif_debug_service {
 102         CAIF_RADIO_DEBUG_SERVICE = 1,
 103         CAIF_APP_DEBUG_SERVICE
 104 };
 105
 106 /**
 107  * struct sockaddr_caif - the sockaddr structure for CAIF sockets.
 108  * @family:                  Address family number, must be AF_CAIF.
 109  * @u:                       Union of address data 'switched' by family.
 110  * :
 111  * @u.at:                    Applies when family = CAIFPROTO_AT.
 112  *
 113  * @u.at.type:               Type of AT link to set up (enum caif_at_type).
 114  *
 115  * @u.util:                  Applies when family = CAIFPROTO_UTIL
 116  *
 117  * @u.util.service:          Utility service name.
 118  *
 119  * @u.dgm:                   Applies when family = CAIFPROTO_DATAGRAM
 120  *
 121  * @u.dgm.connection_id:     Datagram connection id.
 122  *
 123  * @u.dgm.nsapi:             NSAPI of the PDP-Context.
 124  *
 125  * @u.rfm:                   Applies when family = CAIFPROTO_RFM
 126  *
 127  * @u.rfm.connection_id:     Connection ID for RFM.
 128  *
 129  * @u.rfm.volume:            Volume to mount.
 130  *
 131  * @u.dbg:                    Applies when family = CAIFPROTO_DEBUG.
 132  *
 133  * @u.dbg.type:                      Type of debug connection to set up
 134  *                            (caif_debug_type).
 135  *
 136  * @u.dbg.service:            Service sub-system to connect (caif_debug_service
 137  * Description:
 138  * This structure holds the connect parameters used for setting up a
 139  * CAIF Channel. It defines the service to connect to on the modem.
 140  */
 141 struct sockaddr_caif {
 142         __kernel_sa_family_t  family;
 143         union {
 144                 struct {
 145                         __u8  type;             /* type: enum caif_at_type */
 146                 } at;                           /* CAIFPROTO_AT */
 147                 struct {
 148                         char      service[16];
 149                 } util;                         /* CAIFPROTO_UTIL */
 150                 union {
 151                         __u32 connection_id;
 152                         __u8  nsapi;
 153                 } dgm;                          /* CAIFPROTO_DATAGRAM(_LOOP)*/
 154                 struct {
 155                         __u32 connection_id;
 156                         char      volume[16];
 157                 } rfm;                          /* CAIFPROTO_RFM */
 158                 struct {
 159                         __u8  type;             /* type:enum caif_debug_type */
 160                         __u8  service;          /* service:caif_debug_service */
 161                 } dbg;                          /* CAIFPROTO_DEBUG */
 162         } u;
 163 };
 164
 165 /**
 166  * enum caif_socket_opts - CAIF option values for getsockopt and setsockopt.
 167  *
 168  * @CAIFSO_LINK_SELECT:         Selector used if multiple CAIF Link layers are
 169  *                              available. Either a high bandwidth
 170  *                              link can be selected (CAIF_LINK_HIGH_BANDW) or
 171  *                              or a low latency link (CAIF_LINK_LOW_LATENCY).
 172  *                              This option is of type __u32.
 173  *                              Alternatively SO_BINDTODEVICE can be used.
 174  *
 175  * @CAIFSO_REQ_PARAM:           Used to set the request parameters for a
 176  *                              utility channel. (maximum 256 bytes). This
 177  *                              option must be set before connecting.
 178  *
 179  * @CAIFSO_RSP_PARAM:           Gets the response parameters for a utility
 180  *                              channel. (maximum 256 bytes). This option
 181  *                              is valid after a successful connect.
 182  *
 183  *
 184  * This enum defines the CAIF Socket options to be used on a socket
 185  * of type PF_CAIF.
 186  *
 187  */
 188 enum caif_socket_opts {
 189         CAIFSO_LINK_SELECT      = 127,
 190         CAIFSO_REQ_PARAM        = 128,
 191         CAIFSO_RSP_PARAM        = 129,
 192 };
 193
 194 #endif /* _LINUX_CAIF_SOCKET_H */