include/linux/phonet.h

   1 /**
   2  * file phonet.h
   3  *
   4  * Phonet sockets kernel interface
   5  *
   6  * Copyright (C) 2008 Nokia Corporation. All rights reserved.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  */
  22
  23 #ifndef LINUX_PHONET_H
  24 #define LINUX_PHONET_H
  25
  26 #include <linux/types.h>
  27 #include <linux/socket.h>
  28
  29 /* Automatic protocol selection */
  30 #define PN_PROTO_TRANSPORT      0
  31 /* Phonet datagram socket */
  32 #define PN_PROTO_PHONET         1
  33 /* Phonet pipe */
  34 #define PN_PROTO_PIPE           2
  35 #define PHONET_NPROTO           3
  36
  37 /* Socket options for SOL_PNPIPE level */
  38 #define PNPIPE_ENCAP            1
  39 #define PNPIPE_IFINDEX          2
  40 #define PNPIPE_HANDLE           3
  41 #define PNPIPE_INITSTATE        4
  42
  43 #define PNADDR_ANY              0
  44 #define PNADDR_BROADCAST        0xFC
  45 #define PNPORT_RESOURCE_ROUTING 0
  46
  47 /* Values for PNPIPE_ENCAP option */
  48 #define PNPIPE_ENCAP_NONE       0
  49 #define PNPIPE_ENCAP_IP         1
  50
  51 /* ioctls */
  52 #define SIOCPNGETOBJECT         (SIOCPROTOPRIVATE + 0)
  53 #define SIOCPNENABLEPIPE        (SIOCPROTOPRIVATE + 13)
  54 #define SIOCPNADDRESOURCE       (SIOCPROTOPRIVATE + 14)
  55 #define SIOCPNDELRESOURCE       (SIOCPROTOPRIVATE + 15)
  56
  57 /* Phonet protocol header */
  58 struct phonethdr {
  59         __u8    pn_rdev;
  60         __u8    pn_sdev;
  61         __u8    pn_res;
  62         __be16  pn_length;
  63         __u8    pn_robj;
  64         __u8    pn_sobj;
  65 } __attribute__((packed));
  66
  67 /* Common Phonet payload header */
  68 struct phonetmsg {
  69         __u8    pn_trans_id;    /* transaction ID */
  70         __u8    pn_msg_id;      /* message type */
  71         union {
  72                 struct {
  73                         __u8    pn_submsg_id;   /* message subtype */
  74                         __u8    pn_data[5];
  75                 } base;
  76                 struct {
  77                         __u16   pn_e_res_id;    /* extended resource ID */
  78                         __u8    pn_e_submsg_id; /* message subtype */
  79                         __u8    pn_e_data[3];
  80                 } ext;
  81         } pn_msg_u;
  82 };
  83 #define PN_COMMON_MESSAGE       0xF0
  84 #define PN_COMMGR               0x10
  85 #define PN_PREFIX               0xE0 /* resource for extended messages */
  86 #define pn_submsg_id            pn_msg_u.base.pn_submsg_id
  87 #define pn_e_submsg_id          pn_msg_u.ext.pn_e_submsg_id
  88 #define pn_e_res_id             pn_msg_u.ext.pn_e_res_id
  89 #define pn_data                 pn_msg_u.base.pn_data
  90 #define pn_e_data               pn_msg_u.ext.pn_e_data
  91
  92 /* data for unreachable errors */
  93 #define PN_COMM_SERVICE_NOT_IDENTIFIED_RESP     0x01
  94 #define PN_COMM_ISA_ENTITY_NOT_REACHABLE_RESP   0x14
  95 #define pn_orig_msg_id          pn_data[0]
  96 #define pn_status               pn_data[1]
  97 #define pn_e_orig_msg_id        pn_e_data[0]
  98 #define pn_e_status             pn_e_data[1]
  99
 100 /* Phonet socket address structure */
 101 struct sockaddr_pn {
 102         __kernel_sa_family_t spn_family;
 103         __u8 spn_obj;
 104         __u8 spn_dev;
 105         __u8 spn_resource;
 106         __u8 spn_zero[sizeof(struct sockaddr) - sizeof(__kernel_sa_family_t) - 3];
 107 } __attribute__((packed));
 108
 109 /* Well known address */
 110 #define PN_DEV_PC       0x10
 111
 112 static inline __u16 pn_object(__u8 addr, __u16 port)
 113 {
 114         return (addr << 8) | (port & 0x3ff);
 115 }
 116
 117 static inline __u8 pn_obj(__u16 handle)
 118 {
 119         return handle & 0xff;
 120 }
 121
 122 static inline __u8 pn_dev(__u16 handle)
 123 {
 124         return handle >> 8;
 125 }
 126
 127 static inline __u16 pn_port(__u16 handle)
 128 {
 129         return handle & 0x3ff;
 130 }
 131
 132 static inline __u8 pn_addr(__u16 handle)
 133 {
 134         return (handle >> 8) & 0xfc;
 135 }
 136
 137 static inline void pn_sockaddr_set_addr(struct sockaddr_pn *spn, __u8 addr)
 138 {
 139         spn->spn_dev &= 0x03;
 140         spn->spn_dev |= addr & 0xfc;
 141 }
 142
 143 static inline void pn_sockaddr_set_port(struct sockaddr_pn *spn, __u16 port)
 144 {
 145         spn->spn_dev &= 0xfc;
 146         spn->spn_dev |= (port >> 8) & 0x03;
 147         spn->spn_obj = port & 0xff;
 148 }
 149
 150 static inline void pn_sockaddr_set_object(struct sockaddr_pn *spn,
 151                                                 __u16 handle)
 152 {
 153         spn->spn_dev = pn_dev(handle);
 154         spn->spn_obj = pn_obj(handle);
 155 }
 156
 157 static inline void pn_sockaddr_set_resource(struct sockaddr_pn *spn,
 158                                                 __u8 resource)
 159 {
 160         spn->spn_resource = resource;
 161 }
 162
 163 static inline __u8 pn_sockaddr_get_addr(const struct sockaddr_pn *spn)
 164 {
 165         return spn->spn_dev & 0xfc;
 166 }
 167
 168 static inline __u16 pn_sockaddr_get_port(const struct sockaddr_pn *spn)
 169 {
 170         return ((spn->spn_dev & 0x03) << 8) | spn->spn_obj;
 171 }
 172
 173 static inline __u16 pn_sockaddr_get_object(const struct sockaddr_pn *spn)
 174 {
 175         return pn_object(spn->spn_dev, spn->spn_obj);
 176 }
 177
 178 static inline __u8 pn_sockaddr_get_resource(const struct sockaddr_pn *spn)
 179 {
 180         return spn->spn_resource;
 181 }
 182
 183 /* Phonet device ioctl requests */
 184 #ifdef __KERNEL__
 185 #define SIOCPNGAUTOCONF         (SIOCDEVPRIVATE + 0)
 186
 187 struct if_phonet_autoconf {
 188         uint8_t device;
 189 };
 190
 191 struct if_phonet_req {
 192         char ifr_phonet_name[16];
 193         union {
 194                 struct if_phonet_autoconf ifru_phonet_autoconf;
 195         } ifr_ifru;
 196 };
 197 #define ifr_phonet_autoconf ifr_ifru.ifru_phonet_autoconf
 198 #endif /* __KERNEL__ */
 199
 200 #endif