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 40 #define PNADDR_ANY 0 41 #define PNPORT_RESOURCE_ROUTING 0 42 43 /* Values for PNPIPE_ENCAP option */ 44 #define PNPIPE_ENCAP_NONE 0 45 #define PNPIPE_ENCAP_IP 1 46 47 /* ioctls */ 48 #define SIOCPNGETOBJECT (SIOCPROTOPRIVATE + 0) 49 50 /* Phonet protocol header */ 51 struct phonethdr { 52 __u8 pn_rdev; 53 __u8 pn_sdev; 54 __u8 pn_res; 55 __be16 pn_length; 56 __u8 pn_robj; 57 __u8 pn_sobj; 58 } __attribute__((packed)); 59 60 /* Common Phonet payload header */ 61 struct phonetmsg { 62 __u8 pn_trans_id; /* transaction ID */ 63 __u8 pn_msg_id; /* message type */ 64 union { 65 struct { 66 __u8 pn_submsg_id; /* message subtype */ 67 __u8 pn_data[5]; 68 } base; 69 struct { 70 __u16 pn_e_res_id; /* extended resource ID */ 71 __u8 pn_e_submsg_id; /* message subtype */ 72 __u8 pn_e_data[3]; 73 } ext; 74 } pn_msg_u; 75 }; 76 #define PN_COMMON_MESSAGE 0xF0 77 #define PN_COMMGR 0x10 78 #define PN_PREFIX 0xE0 /* resource for extended messages */ 79 #define pn_submsg_id pn_msg_u.base.pn_submsg_id 80 #define pn_e_submsg_id pn_msg_u.ext.pn_e_submsg_id 81 #define pn_e_res_id pn_msg_u.ext.pn_e_res_id 82 #define pn_data pn_msg_u.base.pn_data 83 #define pn_e_data pn_msg_u.ext.pn_e_data 84 85 /* data for unreachable errors */ 86 #define PN_COMM_SERVICE_NOT_IDENTIFIED_RESP 0x01 87 #define PN_COMM_ISA_ENTITY_NOT_REACHABLE_RESP 0x14 88 #define pn_orig_msg_id pn_data[0] 89 #define pn_status pn_data[1] 90 #define pn_e_orig_msg_id pn_e_data[0] 91 #define pn_e_status pn_e_data[1] 92 93 /* Phonet socket address structure */ 94 struct sockaddr_pn { 95 sa_family_t spn_family; 96 __u8 spn_obj; 97 __u8 spn_dev; 98 __u8 spn_resource; 99 __u8 spn_zero[sizeof(struct sockaddr) - sizeof(sa_family_t) - 3]; 100 } __attribute__ ((packed)); 101 102 static inline __u16 pn_object(__u8 addr, __u16 port) 103 { 104 return (addr << 8) | (port & 0x3ff); 105 } 106 107 static inline __u8 pn_obj(__u16 handle) 108 { 109 return handle & 0xff; 110 } 111 112 static inline __u8 pn_dev(__u16 handle) 113 { 114 return handle >> 8; 115 } 116 117 static inline __u16 pn_port(__u16 handle) 118 { 119 return handle & 0x3ff; 120 } 121 122 static inline __u8 pn_addr(__u16 handle) 123 { 124 return (handle >> 8) & 0xfc; 125 } 126 127 static inline void pn_sockaddr_set_addr(struct sockaddr_pn *spn, __u8 addr) 128 { 129 spn->spn_dev &= 0x03; 130 spn->spn_dev |= addr & 0xfc; 131 } 132 133 static inline void pn_sockaddr_set_port(struct sockaddr_pn *spn, __u16 port) 134 { 135 spn->spn_dev &= 0xfc; 136 spn->spn_dev |= (port >> 8) & 0x03; 137 spn->spn_obj = port & 0xff; 138 } 139 140 static inline void pn_sockaddr_set_object(struct sockaddr_pn *spn, 141 __u16 handle) 142 { 143 spn->spn_dev = pn_dev(handle); 144 spn->spn_obj = pn_obj(handle); 145 } 146 147 static inline void pn_sockaddr_set_resource(struct sockaddr_pn *spn, 148 __u8 resource) 149 { 150 spn->spn_resource = resource; 151 } 152 153 static inline __u8 pn_sockaddr_get_addr(const struct sockaddr_pn *spn) 154 { 155 return spn->spn_dev & 0xfc; 156 } 157 158 static inline __u16 pn_sockaddr_get_port(const struct sockaddr_pn *spn) 159 { 160 return ((spn->spn_dev & 0x03) << 8) | spn->spn_obj; 161 } 162 163 static inline __u16 pn_sockaddr_get_object(const struct sockaddr_pn *spn) 164 { 165 return pn_object(spn->spn_dev, spn->spn_obj); 166 } 167 168 static inline __u8 pn_sockaddr_get_resource(const struct sockaddr_pn *spn) 169 { 170 return spn->spn_resource; 171 } 172 173 #endif 174