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 /* Automatic protocol selection */ 27 #define PN_PROTO_TRANSPORT 0 28 /* Phonet datagram socket */ 29 #define PN_PROTO_PHONET 1 30 #define PHONET_NPROTO 2 31 32 #define PNADDR_ANY 0 33 #define PNPORT_RESOURCE_ROUTING 0 34 35 /* ioctls */ 36 #define SIOCPNGETOBJECT (SIOCPROTOPRIVATE + 0) 37 38 /* Phonet protocol header */ 39 struct phonethdr { 40 __u8 pn_rdev; 41 __u8 pn_sdev; 42 __u8 pn_res; 43 __be16 pn_length; 44 __u8 pn_robj; 45 __u8 pn_sobj; 46 } __attribute__((packed)); 47 48 /* Common Phonet payload header */ 49 struct phonetmsg { 50 __u8 pn_trans_id; /* transaction ID */ 51 __u8 pn_msg_id; /* message type */ 52 union { 53 struct { 54 __u8 pn_submsg_id; /* message subtype */ 55 __u8 pn_data[5]; 56 } base; 57 struct { 58 __u16 pn_e_res_id; /* extended resource ID */ 59 __u8 pn_e_submsg_id; /* message subtype */ 60 __u8 pn_e_data[3]; 61 } ext; 62 } pn_msg_u; 63 }; 64 #define PN_COMMON_MESSAGE 0xF0 65 #define PN_PREFIX 0xE0 /* resource for extended messages */ 66 #define pn_submsg_id pn_msg_u.base.pn_submsg_id 67 #define pn_e_submsg_id pn_msg_u.ext.pn_e_submsg_id 68 #define pn_e_res_id pn_msg_u.ext.pn_e_res_id 69 #define pn_data pn_msg_u.base.pn_data 70 #define pn_e_data pn_msg_u.ext.pn_e_data 71 72 /* data for unreachable errors */ 73 #define PN_COMM_SERVICE_NOT_IDENTIFIED_RESP 0x01 74 #define PN_COMM_ISA_ENTITY_NOT_REACHABLE_RESP 0x14 75 #define pn_orig_msg_id pn_data[0] 76 #define pn_status pn_data[1] 77 #define pn_e_orig_msg_id pn_e_data[0] 78 #define pn_e_status pn_e_data[1] 79 80 /* Phonet socket address structure */ 81 struct sockaddr_pn { 82 sa_family_t spn_family; 83 __u8 spn_obj; 84 __u8 spn_dev; 85 __u8 spn_resource; 86 __u8 spn_zero[sizeof(struct sockaddr) - sizeof(sa_family_t) - 3]; 87 } __attribute__ ((packed)); 88 89 static inline __u16 pn_object(__u8 addr, __u16 port) 90 { 91 return (addr << 8) | (port & 0x3ff); 92 } 93 94 static inline __u8 pn_obj(__u16 handle) 95 { 96 return handle & 0xff; 97 } 98 99 static inline __u8 pn_dev(__u16 handle) 100 { 101 return handle >> 8; 102 } 103 104 static inline __u16 pn_port(__u16 handle) 105 { 106 return handle & 0x3ff; 107 } 108 109 static inline __u8 pn_addr(__u16 handle) 110 { 111 return (handle >> 8) & 0xfc; 112 } 113 114 static inline void pn_sockaddr_set_addr(struct sockaddr_pn *spn, __u8 addr) 115 { 116 spn->spn_dev &= 0x03; 117 spn->spn_dev |= addr & 0xfc; 118 } 119 120 static inline void pn_sockaddr_set_port(struct sockaddr_pn *spn, __u16 port) 121 { 122 spn->spn_dev &= 0xfc; 123 spn->spn_dev |= (port >> 8) & 0x03; 124 spn->spn_obj = port & 0xff; 125 } 126 127 static inline void pn_sockaddr_set_object(struct sockaddr_pn *spn, 128 __u16 handle) 129 { 130 spn->spn_dev = pn_dev(handle); 131 spn->spn_obj = pn_obj(handle); 132 } 133 134 static inline void pn_sockaddr_set_resource(struct sockaddr_pn *spn, 135 __u8 resource) 136 { 137 spn->spn_resource = resource; 138 } 139 140 static inline __u8 pn_sockaddr_get_addr(const struct sockaddr_pn *spn) 141 { 142 return spn->spn_dev & 0xfc; 143 } 144 145 static inline __u16 pn_sockaddr_get_port(const struct sockaddr_pn *spn) 146 { 147 return ((spn->spn_dev & 0x03) << 8) | spn->spn_obj; 148 } 149 150 static inline __u16 pn_sockaddr_get_object(const struct sockaddr_pn *spn) 151 { 152 return pn_object(spn->spn_dev, spn->spn_obj); 153 } 154 155 static inline __u8 pn_sockaddr_get_resource(const struct sockaddr_pn *spn) 156 { 157 return spn->spn_resource; 158 } 159 160 #endif 161