| Remi Denis-Courmont | bce7b15 | 2008-09-22 19:51:15 -0700 | [diff] [blame^] | 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 | /* Phonet protocol header */ |
| 36 | struct phonethdr { |
| 37 | __u8 pn_rdev; |
| 38 | __u8 pn_sdev; |
| 39 | __u8 pn_res; |
| 40 | __be16 pn_length; |
| 41 | __u8 pn_robj; |
| 42 | __u8 pn_sobj; |
| 43 | } __attribute__((packed)); |
| 44 | |
| 45 | /* Phonet socket address structure */ |
| 46 | struct sockaddr_pn { |
| 47 | sa_family_t spn_family; |
| 48 | __u8 spn_obj; |
| 49 | __u8 spn_dev; |
| 50 | __u8 spn_resource; |
| 51 | __u8 spn_zero[sizeof(struct sockaddr) - sizeof(sa_family_t) - 3]; |
| 52 | } __attribute__ ((packed)); |
| 53 | |
| 54 | static inline __u16 pn_object(__u8 addr, __u16 port) |
| 55 | { |
| 56 | return (addr << 8) | (port & 0x3ff); |
| 57 | } |
| 58 | |
| 59 | static inline __u8 pn_obj(__u16 handle) |
| 60 | { |
| 61 | return handle & 0xff; |
| 62 | } |
| 63 | |
| 64 | static inline __u8 pn_dev(__u16 handle) |
| 65 | { |
| 66 | return handle >> 8; |
| 67 | } |
| 68 | |
| 69 | static inline __u16 pn_port(__u16 handle) |
| 70 | { |
| 71 | return handle & 0x3ff; |
| 72 | } |
| 73 | |
| 74 | static inline __u8 pn_addr(__u16 handle) |
| 75 | { |
| 76 | return (handle >> 8) & 0xfc; |
| 77 | } |
| 78 | |
| 79 | static inline void pn_sockaddr_set_addr(struct sockaddr_pn *spn, __u8 addr) |
| 80 | { |
| 81 | spn->spn_dev &= 0x03; |
| 82 | spn->spn_dev |= addr & 0xfc; |
| 83 | } |
| 84 | |
| 85 | static inline void pn_sockaddr_set_port(struct sockaddr_pn *spn, __u16 port) |
| 86 | { |
| 87 | spn->spn_dev &= 0xfc; |
| 88 | spn->spn_dev |= (port >> 8) & 0x03; |
| 89 | spn->spn_obj = port & 0xff; |
| 90 | } |
| 91 | |
| 92 | static inline void pn_sockaddr_set_object(struct sockaddr_pn *spn, |
| 93 | __u16 handle) |
| 94 | { |
| 95 | spn->spn_dev = pn_dev(handle); |
| 96 | spn->spn_obj = pn_obj(handle); |
| 97 | } |
| 98 | |
| 99 | static inline void pn_sockaddr_set_resource(struct sockaddr_pn *spn, |
| 100 | __u8 resource) |
| 101 | { |
| 102 | spn->spn_resource = resource; |
| 103 | } |
| 104 | |
| 105 | static inline __u8 pn_sockaddr_get_addr(const struct sockaddr_pn *spn) |
| 106 | { |
| 107 | return spn->spn_dev & 0xfc; |
| 108 | } |
| 109 | |
| 110 | static inline __u16 pn_sockaddr_get_port(const struct sockaddr_pn *spn) |
| 111 | { |
| 112 | return ((spn->spn_dev & 0x03) << 8) | spn->spn_obj; |
| 113 | } |
| 114 | |
| 115 | static inline __u16 pn_sockaddr_get_object(const struct sockaddr_pn *spn) |
| 116 | { |
| 117 | return pn_object(spn->spn_dev, spn->spn_obj); |
| 118 | } |
| 119 | |
| 120 | static inline __u8 pn_sockaddr_get_resource(const struct sockaddr_pn *spn) |
| 121 | { |
| 122 | return spn->spn_resource; |
| 123 | } |
| 124 | |
| 125 | #endif |