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4b07b3f6 RDC |
1 | /* |
2 | * File: af_phonet.h | |
3 | * | |
4 | * Phonet sockets kernel definitions | |
5 | * | |
6 | * Copyright (C) 2008 Nokia Corporation. | |
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 AF_PHONET_H | |
24 | #define AF_PHONET_H | |
25 | ||
26 | /* | |
27 | * The lower layers may not require more space, ever. Make sure it's | |
28 | * enough. | |
29 | */ | |
e214a8cc | 30 | #define MAX_PHONET_HEADER (8 + MAX_HEADER) |
4b07b3f6 | 31 | |
ba113a94 RDC |
32 | /* |
33 | * Every Phonet* socket has this structure first in its | |
34 | * protocol-specific structure under name c. | |
35 | */ | |
36 | struct pn_sock { | |
37 | struct sock sk; | |
38 | u16 sobject; | |
a8059512 | 39 | u16 dobject; |
ba113a94 RDC |
40 | u8 resource; |
41 | }; | |
42 | ||
43 | static inline struct pn_sock *pn_sk(struct sock *sk) | |
44 | { | |
45 | return (struct pn_sock *)sk; | |
46 | } | |
47 | ||
48 | extern const struct proto_ops phonet_dgram_ops; | |
49 | ||
6b0d07ba | 50 | void pn_sock_init(void); |
52404881 | 51 | struct sock *pn_find_sock_by_sa(struct net *net, const struct sockaddr_pn *sa); |
f14001fc | 52 | void pn_deliver_sock_broadcast(struct net *net, struct sk_buff *skb); |
87ab4e20 | 53 | void phonet_get_local_port_range(int *min, int *max); |
086c653f | 54 | int pn_sock_hash(struct sock *sk); |
ba113a94 RDC |
55 | void pn_sock_unhash(struct sock *sk); |
56 | int pn_sock_get_port(struct sock *sk, unsigned short sport); | |
57 | ||
4e3d16ce RDC |
58 | struct sock *pn_find_sock_by_res(struct net *net, u8 res); |
59 | int pn_sock_bind_res(struct sock *sock, u8 res); | |
60 | int pn_sock_unbind_res(struct sock *sk, u8 res); | |
61 | void pn_sock_unbind_all_res(struct sock *sk); | |
62 | ||
107d0d9b RDC |
63 | int pn_skb_send(struct sock *sk, struct sk_buff *skb, |
64 | const struct sockaddr_pn *target); | |
65 | ||
4b07b3f6 RDC |
66 | static inline struct phonethdr *pn_hdr(struct sk_buff *skb) |
67 | { | |
68 | return (struct phonethdr *)skb_network_header(skb); | |
69 | } | |
70 | ||
be0c52bf RDC |
71 | static inline struct phonetmsg *pn_msg(struct sk_buff *skb) |
72 | { | |
73 | return (struct phonetmsg *)skb_transport_header(skb); | |
74 | } | |
75 | ||
4b07b3f6 RDC |
76 | /* |
77 | * Get the other party's sockaddr from received skb. The skb begins | |
78 | * with a Phonet header. | |
79 | */ | |
80 | static inline | |
81 | void pn_skb_get_src_sockaddr(struct sk_buff *skb, struct sockaddr_pn *sa) | |
82 | { | |
83 | struct phonethdr *ph = pn_hdr(skb); | |
84 | u16 obj = pn_object(ph->pn_sdev, ph->pn_sobj); | |
85 | ||
86 | sa->spn_family = AF_PHONET; | |
87 | pn_sockaddr_set_object(sa, obj); | |
88 | pn_sockaddr_set_resource(sa, ph->pn_res); | |
89 | memset(sa->spn_zero, 0, sizeof(sa->spn_zero)); | |
90 | } | |
91 | ||
92 | static inline | |
93 | void pn_skb_get_dst_sockaddr(struct sk_buff *skb, struct sockaddr_pn *sa) | |
94 | { | |
95 | struct phonethdr *ph = pn_hdr(skb); | |
96 | u16 obj = pn_object(ph->pn_rdev, ph->pn_robj); | |
97 | ||
98 | sa->spn_family = AF_PHONET; | |
99 | pn_sockaddr_set_object(sa, obj); | |
100 | pn_sockaddr_set_resource(sa, ph->pn_res); | |
101 | memset(sa->spn_zero, 0, sizeof(sa->spn_zero)); | |
102 | } | |
103 | ||
104 | /* Protocols in Phonet protocol family. */ | |
105 | struct phonet_protocol { | |
ba113a94 | 106 | const struct proto_ops *ops; |
4b07b3f6 RDC |
107 | struct proto *prot; |
108 | int sock_type; | |
109 | }; | |
110 | ||
facb4edc DC |
111 | int phonet_proto_register(unsigned int protocol, struct phonet_protocol *pp); |
112 | void phonet_proto_unregister(unsigned int protocol, struct phonet_protocol *pp); | |
4b07b3f6 | 113 | |
87ab4e20 RDC |
114 | int phonet_sysctl_init(void); |
115 | void phonet_sysctl_exit(void); | |
107d0d9b RDC |
116 | int isi_register(void); |
117 | void isi_unregister(void); | |
118 | ||
4b07b3f6 | 119 | #endif |