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 42 #define PNADDR_ANY 0 43 #define PNADDR_BROADCAST 0xFC 44 #define PNPORT_RESOURCE_ROUTING 0 45 46 /* Values for PNPIPE_ENCAP option */ 47 #define PNPIPE_ENCAP_NONE 0 48 #define PNPIPE_ENCAP_IP 1 49 50 /* ioctls */ 51 #define SIOCPNGETOBJECT (SIOCPROTOPRIVATE + 0) 52 #define SIOCPNADDRESOURCE (SIOCPROTOPRIVATE + 14) 53 #define SIOCPNDELRESOURCE (SIOCPROTOPRIVATE + 15) 54 55 /* Phonet protocol header */ 56 struct phonethdr { 57 __u8 pn_rdev; 58 __u8 pn_sdev; 59 __u8 pn_res; 60 __be16 pn_length; 61 __u8 pn_robj; 62 __u8 pn_sobj; 63 } __attribute__((packed)); 64 65 /* Common Phonet payload header */ 66 struct phonetmsg { 67 __u8 pn_trans_id; /* transaction ID */ 68 __u8 pn_msg_id; /* message type */ 69 union { 70 struct { 71 __u8 pn_submsg_id; /* message subtype */ 72 __u8 pn_data[5]; 73 } base; 74 struct { 75 __u16 pn_e_res_id; /* extended resource ID */ 76 __u8 pn_e_submsg_id; /* message subtype */ 77 __u8 pn_e_data[3]; 78 } ext; 79 } pn_msg_u; 80 }; 81 #define PN_COMMON_MESSAGE 0xF0 82 #define PN_COMMGR 0x10 83 #define PN_PREFIX 0xE0 /* resource for extended messages */ 84 #define pn_submsg_id pn_msg_u.base.pn_submsg_id 85 #define pn_e_submsg_id pn_msg_u.ext.pn_e_submsg_id 86 #define pn_e_res_id pn_msg_u.ext.pn_e_res_id 87 #define pn_data pn_msg_u.base.pn_data 88 #define pn_e_data pn_msg_u.ext.pn_e_data 89 90 /* data for unreachable errors */ 91 #define PN_COMM_SERVICE_NOT_IDENTIFIED_RESP 0x01 92 #define PN_COMM_ISA_ENTITY_NOT_REACHABLE_RESP 0x14 93 #define pn_orig_msg_id pn_data[0] 94 #define pn_status pn_data[1] 95 #define pn_e_orig_msg_id pn_e_data[0] 96 #define pn_e_status pn_e_data[1] 97 98 /* Phonet socket address structure */ 99 struct sockaddr_pn { 100 __kernel_sa_family_t spn_family; 101 __u8 spn_obj; 102 __u8 spn_dev; 103 __u8 spn_resource; 104 __u8 spn_zero[sizeof(struct sockaddr) - sizeof(__kernel_sa_family_t) - 3]; 105 } __attribute__((packed)); 106 107 /* Well known address */ 108 #define PN_DEV_PC 0x10 109 110 static __inline__ __u16 pn_object(__u8 addr, __u16 port) 111 { 112 return (addr << 8) | (port & 0x3ff); 113 } 114 115 static __inline__ __u8 pn_obj(__u16 handle) 116 { 117 return handle & 0xff; 118 } 119 120 static __inline__ __u8 pn_dev(__u16 handle) 121 { 122 return handle >> 8; 123 } 124 125 static __inline__ __u16 pn_port(__u16 handle) 126 { 127 return handle & 0x3ff; 128 } 129 130 static __inline__ __u8 pn_addr(__u16 handle) 131 { 132 return (handle >> 8) & 0xfc; 133 } 134 135 static __inline__ void pn_sockaddr_set_addr(struct sockaddr_pn *spn, __u8 addr) 136 { 137 spn->spn_dev &= 0x03; 138 spn->spn_dev |= addr & 0xfc; 139 } 140 141 static __inline__ void pn_sockaddr_set_port(struct sockaddr_pn *spn, __u16 port) 142 { 143 spn->spn_dev &= 0xfc; 144 spn->spn_dev |= (port >> 8) & 0x03; 145 spn->spn_obj = port & 0xff; 146 } 147 148 static __inline__ void pn_sockaddr_set_object(struct sockaddr_pn *spn, 149 __u16 handle) 150 { 151 spn->spn_dev = pn_dev(handle); 152 spn->spn_obj = pn_obj(handle); 153 } 154 155 static __inline__ void pn_sockaddr_set_resource(struct sockaddr_pn *spn, 156 __u8 resource) 157 { 158 spn->spn_resource = resource; 159 } 160 161 static __inline__ __u8 pn_sockaddr_get_addr(const struct sockaddr_pn *spn) 162 { 163 return spn->spn_dev & 0xfc; 164 } 165 166 static __inline__ __u16 pn_sockaddr_get_port(const struct sockaddr_pn *spn) 167 { 168 return ((spn->spn_dev & 0x03) << 8) | spn->spn_obj; 169 } 170 171 static __inline__ __u16 pn_sockaddr_get_object(const struct sockaddr_pn *spn) 172 { 173 return pn_object(spn->spn_dev, spn->spn_obj); 174 } 175 176 static __inline__ __u8 pn_sockaddr_get_resource(const struct sockaddr_pn *spn) 177 { 178 return spn->spn_resource; 179 } 180 181 /* Phonet device ioctl requests */ 182 183 #endif 184
