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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; | |
39 | u8 resource; | |
40 | }; | |
41 | ||
42 | static inline struct pn_sock *pn_sk(struct sock *sk) | |
43 | { | |
44 | return (struct pn_sock *)sk; | |
45 | } | |
46 | ||
47 | extern const struct proto_ops phonet_dgram_ops; | |
48 | ||
52404881 | 49 | struct sock *pn_find_sock_by_sa(struct net *net, const struct sockaddr_pn *sa); |
87ab4e20 | 50 | void phonet_get_local_port_range(int *min, int *max); |
ba113a94 RDC |
51 | void pn_sock_hash(struct sock *sk); |
52 | void pn_sock_unhash(struct sock *sk); | |
53 | int pn_sock_get_port(struct sock *sk, unsigned short sport); | |
54 | ||
107d0d9b RDC |
55 | int pn_skb_send(struct sock *sk, struct sk_buff *skb, |
56 | const struct sockaddr_pn *target); | |
57 | ||
4b07b3f6 RDC |
58 | static inline struct phonethdr *pn_hdr(struct sk_buff *skb) |
59 | { | |
60 | return (struct phonethdr *)skb_network_header(skb); | |
61 | } | |
62 | ||
be0c52bf RDC |
63 | static inline struct phonetmsg *pn_msg(struct sk_buff *skb) |
64 | { | |
65 | return (struct phonetmsg *)skb_transport_header(skb); | |
66 | } | |
67 | ||
4b07b3f6 RDC |
68 | /* |
69 | * Get the other party's sockaddr from received skb. The skb begins | |
70 | * with a Phonet header. | |
71 | */ | |
72 | static inline | |
73 | void pn_skb_get_src_sockaddr(struct sk_buff *skb, struct sockaddr_pn *sa) | |
74 | { | |
75 | struct phonethdr *ph = pn_hdr(skb); | |
76 | u16 obj = pn_object(ph->pn_sdev, ph->pn_sobj); | |
77 | ||
78 | sa->spn_family = AF_PHONET; | |
79 | pn_sockaddr_set_object(sa, obj); | |
80 | pn_sockaddr_set_resource(sa, ph->pn_res); | |
81 | memset(sa->spn_zero, 0, sizeof(sa->spn_zero)); | |
82 | } | |
83 | ||
84 | static inline | |
85 | void pn_skb_get_dst_sockaddr(struct sk_buff *skb, struct sockaddr_pn *sa) | |
86 | { | |
87 | struct phonethdr *ph = pn_hdr(skb); | |
88 | u16 obj = pn_object(ph->pn_rdev, ph->pn_robj); | |
89 | ||
90 | sa->spn_family = AF_PHONET; | |
91 | pn_sockaddr_set_object(sa, obj); | |
92 | pn_sockaddr_set_resource(sa, ph->pn_res); | |
93 | memset(sa->spn_zero, 0, sizeof(sa->spn_zero)); | |
94 | } | |
95 | ||
96 | /* Protocols in Phonet protocol family. */ | |
97 | struct phonet_protocol { | |
ba113a94 | 98 | const struct proto_ops *ops; |
4b07b3f6 RDC |
99 | struct proto *prot; |
100 | int sock_type; | |
101 | }; | |
102 | ||
103 | int phonet_proto_register(int protocol, struct phonet_protocol *pp); | |
104 | void phonet_proto_unregister(int protocol, struct phonet_protocol *pp); | |
105 | ||
87ab4e20 RDC |
106 | int phonet_sysctl_init(void); |
107 | void phonet_sysctl_exit(void); | |
107d0d9b RDC |
108 | int isi_register(void); |
109 | void isi_unregister(void); | |
110 | ||
4b07b3f6 | 111 | #endif |