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
  28 /* Automatic protocol selection */
  29 #define PN_PROTO_TRANSPORT      0
  30 /* Phonet datagram socket */
  31 #define PN_PROTO_PHONET         1
  32 /* Phonet pipe */
  33 #define PN_PROTO_PIPE           2
  34 #define PHONET_NPROTO           3
  35
  36 /* Socket options for SOL_PNPIPE level */
  37 #define PNPIPE_ENCAP            1
  38 #define PNPIPE_IFINDEX          2
  39 #define PNPIPE_PIPE_HANDLE      3
  40 #define PNPIPE_ENABLE           4
  41 /* unused slot */
  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 SIOCPNADDRESOURCE       (SIOCPROTOPRIVATE + 14)
  54 #define SIOCPNDELRESOURCE       (SIOCPROTOPRIVATE + 15)
  55
  56 /* Phonet protocol header */
  57 struct phonethdr {
  58         __u8    pn_rdev;
  59         __u8    pn_sdev;
  60         __u8    pn_res;
  61         __be16  pn_length;
  62         __u8    pn_robj;
  63         __u8    pn_sobj;
  64 } __attribute__((packed));
  65
  66 /* Common Phonet payload header */
  67 struct phonetmsg {
  68         __u8    pn_trans_id;    /* transaction ID */
  69         __u8    pn_msg_id;      /* message type */
  70         union {
  71                 struct {
  72                         __u8    pn_submsg_id;   /* message subtype */
  73                         __u8    pn_data[5];
  74                 } base;
  75                 struct {
  76                         __u16   pn_e_res_id;    /* extended resource ID */
  77                         __u8    pn_e_submsg_id; /* message subtype */
  78                         __u8    pn_e_data[3];
  79                 } ext;
  80         } pn_msg_u;
  81 };
  82 #define PN_COMMON_MESSAGE       0xF0
  83 #define PN_COMMGR               0x10
  84 #define PN_PREFIX               0xE0 /* resource for extended messages */
  85 #define pn_submsg_id            pn_msg_u.base.pn_submsg_id
  86 #define pn_e_submsg_id          pn_msg_u.ext.pn_e_submsg_id
  87 #define pn_e_res_id             pn_msg_u.ext.pn_e_res_id
  88 #define pn_data                 pn_msg_u.base.pn_data
  89 #define pn_e_data               pn_msg_u.ext.pn_e_data
  90
  91 /* data for unreachable errors */
  92 #define PN_COMM_SERVICE_NOT_IDENTIFIED_RESP     0x01
  93 #define PN_COMM_ISA_ENTITY_NOT_REACHABLE_RESP   0x14
  94 #define pn_orig_msg_id          pn_data[0]
  95 #define pn_status               pn_data[1]
  96 #define pn_e_orig_msg_id        pn_e_data[0]
  97 #define pn_e_status             pn_e_data[1]
  98
  99 /* Phonet socket address structure */
 100 struct sockaddr_pn {
 101         sa_family_t spn_family;
 102         __u8 spn_obj;
 103         __u8 spn_dev;
 104         __u8 spn_resource;
 105         __u8 spn_zero[sizeof(struct sockaddr) - sizeof(sa_family_t) - 3];
 106 } __attribute__((packed));
 107
 108 /* Well known address */
 109 #define PN_DEV_PC       0x10
 110
 111 static inline __u16 pn_object(__u8 addr, __u16 port)
 112 {
 113         return (addr << 8) | (port & 0x3ff);
 114 }
 115
 116 static inline __u8 pn_obj(__u16 handle)
 117 {
 118         return handle & 0xff;
 119 }
 120
 121 static inline __u8 pn_dev(__u16 handle)
 122 {
 123         return handle >> 8;
 124 }
 125
 126 static inline __u16 pn_port(__u16 handle)
 127 {
 128         return handle & 0x3ff;
 129 }
 130
 131 static inline __u8 pn_addr(__u16 handle)
 132 {
 133         return (handle >> 8) & 0xfc;
 134 }
 135
 136 static inline void pn_sockaddr_set_addr(struct sockaddr_pn *spn, __u8 addr)
 137 {
 138         spn->spn_dev &= 0x03;
 139         spn->spn_dev |= addr & 0xfc;
 140 }
 141
 142 static inline void pn_sockaddr_set_port(struct sockaddr_pn *spn, __u16 port)
 143 {
 144         spn->spn_dev &= 0xfc;
 145         spn->spn_dev |= (port >> 8) & 0x03;
 146         spn->spn_obj = port & 0xff;
 147 }
 148
 149 static inline void pn_sockaddr_set_object(struct sockaddr_pn *spn,
 150                                                 __u16 handle)
 151 {
 152         spn->spn_dev = pn_dev(handle);
 153         spn->spn_obj = pn_obj(handle);
 154 }
 155
 156 static inline void pn_sockaddr_set_resource(struct sockaddr_pn *spn,
 157                                                 __u8 resource)
 158 {
 159         spn->spn_resource = resource;
 160 }
 161
 162 static inline __u8 pn_sockaddr_get_addr(const struct sockaddr_pn *spn)
 163 {
 164         return spn->spn_dev & 0xfc;
 165 }
 166
 167 static inline __u16 pn_sockaddr_get_port(const struct sockaddr_pn *spn)
 168 {
 169         return ((spn->spn_dev & 0x03) << 8) | spn->spn_obj;
 170 }
 171
 172 static inline __u16 pn_sockaddr_get_object(const struct sockaddr_pn *spn)
 173 {
 174         return pn_object(spn->spn_dev, spn->spn_obj);
 175 }
 176
 177 static inline __u8 pn_sockaddr_get_resource(const struct sockaddr_pn *spn)
 178 {
 179         return spn->spn_resource;
 180 }
 181
 182 /* Phonet device ioctl requests */
 183 #ifdef __KERNEL__
 184 #define SIOCPNGAUTOCONF         (SIOCDEVPRIVATE + 0)
 185
 186 struct if_phonet_autoconf {
 187         uint8_t device;
 188 };
 189
 190 struct if_phonet_req {
 191         char ifr_phonet_name[16];
 192         union {
 193                 struct if_phonet_autoconf ifru_phonet_autoconf;
 194         } ifr_ifru;
 195 };
 196 #define ifr_phonet_autoconf ifr_ifru.ifru_phonet_autoconf
 197 #endif /* __KERNEL__ */
 198
 199 #endif