Loading...
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 */
30#define MAX_PHONET_HEADER (8 + MAX_HEADER)
31
32/*
33 * Every Phonet* socket has this structure first in its
34 * protocol-specific structure under name c.
35 */
36struct pn_sock {
37 struct sock sk;
38 u16 sobject;
39 u16 dobject;
40 u8 resource;
41};
42
43static inline struct pn_sock *pn_sk(struct sock *sk)
44{
45 return (struct pn_sock *)sk;
46}
47
48extern const struct proto_ops phonet_dgram_ops;
49
50void pn_sock_init(void);
51struct sock *pn_find_sock_by_sa(struct net *net, const struct sockaddr_pn *sa);
52void pn_deliver_sock_broadcast(struct net *net, struct sk_buff *skb);
53void phonet_get_local_port_range(int *min, int *max);
54int pn_sock_hash(struct sock *sk);
55void pn_sock_unhash(struct sock *sk);
56int pn_sock_get_port(struct sock *sk, unsigned short sport);
57
58struct sock *pn_find_sock_by_res(struct net *net, u8 res);
59int pn_sock_bind_res(struct sock *sock, u8 res);
60int pn_sock_unbind_res(struct sock *sk, u8 res);
61void pn_sock_unbind_all_res(struct sock *sk);
62
63int pn_skb_send(struct sock *sk, struct sk_buff *skb,
64 const struct sockaddr_pn *target);
65
66static inline struct phonethdr *pn_hdr(struct sk_buff *skb)
67{
68 return (struct phonethdr *)skb_network_header(skb);
69}
70
71static inline struct phonetmsg *pn_msg(struct sk_buff *skb)
72{
73 return (struct phonetmsg *)skb_transport_header(skb);
74}
75
76/*
77 * Get the other party's sockaddr from received skb. The skb begins
78 * with a Phonet header.
79 */
80static inline
81void 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
92static inline
93void 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. */
105struct phonet_protocol {
106 const struct proto_ops *ops;
107 struct proto *prot;
108 int sock_type;
109};
110
111int phonet_proto_register(unsigned int protocol,
112 const struct phonet_protocol *pp);
113void phonet_proto_unregister(unsigned int protocol,
114 const struct phonet_protocol *pp);
115
116int phonet_sysctl_init(void);
117void phonet_sysctl_exit(void);
118int isi_register(void);
119void isi_unregister(void);
120
121#endif
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * File: af_phonet.h
4 *
5 * Phonet sockets kernel definitions
6 *
7 * Copyright (C) 2008 Nokia Corporation.
8 */
9
10#ifndef AF_PHONET_H
11#define AF_PHONET_H
12
13#include <linux/phonet.h>
14#include <linux/skbuff.h>
15#include <net/sock.h>
16
17/*
18 * The lower layers may not require more space, ever. Make sure it's
19 * enough.
20 */
21#define MAX_PHONET_HEADER (8 + MAX_HEADER)
22
23/*
24 * Every Phonet* socket has this structure first in its
25 * protocol-specific structure under name c.
26 */
27struct pn_sock {
28 struct sock sk;
29 u16 sobject;
30 u16 dobject;
31 u8 resource;
32};
33
34static inline struct pn_sock *pn_sk(struct sock *sk)
35{
36 return (struct pn_sock *)sk;
37}
38
39extern const struct proto_ops phonet_dgram_ops;
40
41void pn_sock_init(void);
42struct sock *pn_find_sock_by_sa(struct net *net, const struct sockaddr_pn *sa);
43void pn_deliver_sock_broadcast(struct net *net, struct sk_buff *skb);
44void phonet_get_local_port_range(int *min, int *max);
45int pn_sock_hash(struct sock *sk);
46void pn_sock_unhash(struct sock *sk);
47int pn_sock_get_port(struct sock *sk, unsigned short sport);
48
49struct sock *pn_find_sock_by_res(struct net *net, u8 res);
50int pn_sock_bind_res(struct sock *sock, u8 res);
51int pn_sock_unbind_res(struct sock *sk, u8 res);
52void pn_sock_unbind_all_res(struct sock *sk);
53
54int pn_skb_send(struct sock *sk, struct sk_buff *skb,
55 const struct sockaddr_pn *target);
56
57static inline struct phonethdr *pn_hdr(struct sk_buff *skb)
58{
59 return (struct phonethdr *)skb_network_header(skb);
60}
61
62static inline struct phonetmsg *pn_msg(struct sk_buff *skb)
63{
64 return (struct phonetmsg *)skb_transport_header(skb);
65}
66
67/*
68 * Get the other party's sockaddr from received skb. The skb begins
69 * with a Phonet header.
70 */
71static inline
72void pn_skb_get_src_sockaddr(struct sk_buff *skb, struct sockaddr_pn *sa)
73{
74 struct phonethdr *ph = pn_hdr(skb);
75 u16 obj = pn_object(ph->pn_sdev, ph->pn_sobj);
76
77 sa->spn_family = AF_PHONET;
78 pn_sockaddr_set_object(sa, obj);
79 pn_sockaddr_set_resource(sa, ph->pn_res);
80 memset(sa->spn_zero, 0, sizeof(sa->spn_zero));
81}
82
83static inline
84void pn_skb_get_dst_sockaddr(struct sk_buff *skb, struct sockaddr_pn *sa)
85{
86 struct phonethdr *ph = pn_hdr(skb);
87 u16 obj = pn_object(ph->pn_rdev, ph->pn_robj);
88
89 sa->spn_family = AF_PHONET;
90 pn_sockaddr_set_object(sa, obj);
91 pn_sockaddr_set_resource(sa, ph->pn_res);
92 memset(sa->spn_zero, 0, sizeof(sa->spn_zero));
93}
94
95/* Protocols in Phonet protocol family. */
96struct phonet_protocol {
97 const struct proto_ops *ops;
98 struct proto *prot;
99 int sock_type;
100};
101
102int phonet_proto_register(unsigned int protocol,
103 const struct phonet_protocol *pp);
104void phonet_proto_unregister(unsigned int protocol,
105 const struct phonet_protocol *pp);
106
107int phonet_sysctl_init(void);
108void phonet_sysctl_exit(void);
109int isi_register(void);
110void isi_unregister(void);
111
112#endif