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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 _UAPILINUX_PHONET_H | |
24 | #define _UAPILINUX_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 | #define PNPIPE_INITSTATE 4 | |
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 SIOCPNENABLEPIPE (SIOCPROTOPRIVATE + 13) | |
54 | #define SIOCPNADDRESOURCE (SIOCPROTOPRIVATE + 14) | |
55 | #define SIOCPNDELRESOURCE (SIOCPROTOPRIVATE + 15) | |
56 | ||
57 | /* Phonet protocol header */ | |
58 | struct phonethdr { | |
59 | __u8 pn_rdev; | |
60 | __u8 pn_sdev; | |
61 | __u8 pn_res; | |
62 | __be16 pn_length; | |
63 | __u8 pn_robj; | |
64 | __u8 pn_sobj; | |
65 | } __attribute__((packed)); | |
66 | ||
67 | /* Common Phonet payload header */ | |
68 | struct phonetmsg { | |
69 | __u8 pn_trans_id; /* transaction ID */ | |
70 | __u8 pn_msg_id; /* message type */ | |
71 | union { | |
72 | struct { | |
73 | __u8 pn_submsg_id; /* message subtype */ | |
74 | __u8 pn_data[5]; | |
75 | } base; | |
76 | struct { | |
77 | __u16 pn_e_res_id; /* extended resource ID */ | |
78 | __u8 pn_e_submsg_id; /* message subtype */ | |
79 | __u8 pn_e_data[3]; | |
80 | } ext; | |
81 | } pn_msg_u; | |
82 | }; | |
83 | #define PN_COMMON_MESSAGE 0xF0 | |
84 | #define PN_COMMGR 0x10 | |
85 | #define PN_PREFIX 0xE0 /* resource for extended messages */ | |
86 | #define pn_submsg_id pn_msg_u.base.pn_submsg_id | |
87 | #define pn_e_submsg_id pn_msg_u.ext.pn_e_submsg_id | |
88 | #define pn_e_res_id pn_msg_u.ext.pn_e_res_id | |
89 | #define pn_data pn_msg_u.base.pn_data | |
90 | #define pn_e_data pn_msg_u.ext.pn_e_data | |
91 | ||
92 | /* data for unreachable errors */ | |
93 | #define PN_COMM_SERVICE_NOT_IDENTIFIED_RESP 0x01 | |
94 | #define PN_COMM_ISA_ENTITY_NOT_REACHABLE_RESP 0x14 | |
95 | #define pn_orig_msg_id pn_data[0] | |
96 | #define pn_status pn_data[1] | |
97 | #define pn_e_orig_msg_id pn_e_data[0] | |
98 | #define pn_e_status pn_e_data[1] | |
99 | ||
100 | /* Phonet socket address structure */ | |
101 | struct sockaddr_pn { | |
102 | __kernel_sa_family_t spn_family; | |
103 | __u8 spn_obj; | |
104 | __u8 spn_dev; | |
105 | __u8 spn_resource; | |
106 | __u8 spn_zero[sizeof(struct sockaddr) - sizeof(__kernel_sa_family_t) - 3]; | |
107 | } __attribute__((packed)); | |
108 | ||
109 | /* Well known address */ | |
110 | #define PN_DEV_PC 0x10 | |
111 | ||
112 | static inline __u16 pn_object(__u8 addr, __u16 port) | |
113 | { | |
114 | return (addr << 8) | (port & 0x3ff); | |
115 | } | |
116 | ||
117 | static inline __u8 pn_obj(__u16 handle) | |
118 | { | |
119 | return handle & 0xff; | |
120 | } | |
121 | ||
122 | static inline __u8 pn_dev(__u16 handle) | |
123 | { | |
124 | return handle >> 8; | |
125 | } | |
126 | ||
127 | static inline __u16 pn_port(__u16 handle) | |
128 | { | |
129 | return handle & 0x3ff; | |
130 | } | |
131 | ||
132 | static inline __u8 pn_addr(__u16 handle) | |
133 | { | |
134 | return (handle >> 8) & 0xfc; | |
135 | } | |
136 | ||
137 | static inline void pn_sockaddr_set_addr(struct sockaddr_pn *spn, __u8 addr) | |
138 | { | |
139 | spn->spn_dev &= 0x03; | |
140 | spn->spn_dev |= addr & 0xfc; | |
141 | } | |
142 | ||
143 | static inline void pn_sockaddr_set_port(struct sockaddr_pn *spn, __u16 port) | |
144 | { | |
145 | spn->spn_dev &= 0xfc; | |
146 | spn->spn_dev |= (port >> 8) & 0x03; | |
147 | spn->spn_obj = port & 0xff; | |
148 | } | |
149 | ||
150 | static inline void pn_sockaddr_set_object(struct sockaddr_pn *spn, | |
151 | __u16 handle) | |
152 | { | |
153 | spn->spn_dev = pn_dev(handle); | |
154 | spn->spn_obj = pn_obj(handle); | |
155 | } | |
156 | ||
157 | static inline void pn_sockaddr_set_resource(struct sockaddr_pn *spn, | |
158 | __u8 resource) | |
159 | { | |
160 | spn->spn_resource = resource; | |
161 | } | |
162 | ||
163 | static inline __u8 pn_sockaddr_get_addr(const struct sockaddr_pn *spn) | |
164 | { | |
165 | return spn->spn_dev & 0xfc; | |
166 | } | |
167 | ||
168 | static inline __u16 pn_sockaddr_get_port(const struct sockaddr_pn *spn) | |
169 | { | |
170 | return ((spn->spn_dev & 0x03) << 8) | spn->spn_obj; | |
171 | } | |
172 | ||
173 | static inline __u16 pn_sockaddr_get_object(const struct sockaddr_pn *spn) | |
174 | { | |
175 | return pn_object(spn->spn_dev, spn->spn_obj); | |
176 | } | |
177 | ||
178 | static inline __u8 pn_sockaddr_get_resource(const struct sockaddr_pn *spn) | |
179 | { | |
180 | return spn->spn_resource; | |
181 | } | |
182 | ||
183 | /* Phonet device ioctl requests */ | |
184 | ||
185 | #endif /* _UAPILINUX_PHONET_H */ |