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Arnaldo Carvalho de Melo7c657872005-08-09 20:14:34 -07001#ifndef _CCID_H
2#define _CCID_H
3/*
4 * net/dccp/ccid.h
5 *
6 * An implementation of the DCCP protocol
7 * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
8 *
9 * CCID infrastructure
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 */
15
16#include <net/sock.h>
17#include <linux/dccp.h>
18#include <linux/list.h>
19#include <linux/module.h>
20
21#define CCID_MAX 255
22
23struct ccid {
24 unsigned char ccid_id;
25 const char *ccid_name;
26 struct module *ccid_owner;
27 int (*ccid_init)(struct sock *sk);
28 void (*ccid_exit)(struct sock *sk);
29 int (*ccid_hc_rx_init)(struct sock *sk);
30 int (*ccid_hc_tx_init)(struct sock *sk);
31 void (*ccid_hc_rx_exit)(struct sock *sk);
32 void (*ccid_hc_tx_exit)(struct sock *sk);
33 void (*ccid_hc_rx_packet_recv)(struct sock *sk, struct sk_buff *skb);
34 int (*ccid_hc_rx_parse_options)(struct sock *sk,
35 unsigned char option,
36 unsigned char len, u16 idx,
37 unsigned char* value);
38 void (*ccid_hc_rx_insert_options)(struct sock *sk, struct sk_buff *skb);
39 void (*ccid_hc_tx_insert_options)(struct sock *sk, struct sk_buff *skb);
40 void (*ccid_hc_tx_packet_recv)(struct sock *sk, struct sk_buff *skb);
41 int (*ccid_hc_tx_parse_options)(struct sock *sk,
42 unsigned char option,
43 unsigned char len, u16 idx,
44 unsigned char* value);
45 int (*ccid_hc_tx_send_packet)(struct sock *sk,
Arnaldo Carvalho de Melo27258ee2005-08-09 20:30:56 -070046 struct sk_buff *skb, int len);
Arnaldo Carvalho de Melo7c657872005-08-09 20:14:34 -070047 void (*ccid_hc_tx_packet_sent)(struct sock *sk, int more, int len);
48};
49
50extern int ccid_register(struct ccid *ccid);
51extern int ccid_unregister(struct ccid *ccid);
52
53extern struct ccid *ccid_init(unsigned char id, struct sock *sk);
54extern void ccid_exit(struct ccid *ccid, struct sock *sk);
55
56static inline void __ccid_get(struct ccid *ccid)
57{
58 __module_get(ccid->ccid_owner);
59}
60
61static inline int ccid_hc_tx_send_packet(struct ccid *ccid, struct sock *sk,
Arnaldo Carvalho de Melo27258ee2005-08-09 20:30:56 -070062 struct sk_buff *skb, int len)
Arnaldo Carvalho de Melo7c657872005-08-09 20:14:34 -070063{
64 int rc = 0;
65 if (ccid->ccid_hc_tx_send_packet != NULL)
Arnaldo Carvalho de Melo27258ee2005-08-09 20:30:56 -070066 rc = ccid->ccid_hc_tx_send_packet(sk, skb, len);
Arnaldo Carvalho de Melo7c657872005-08-09 20:14:34 -070067 return rc;
68}
69
70static inline void ccid_hc_tx_packet_sent(struct ccid *ccid, struct sock *sk,
71 int more, int len)
72{
73 if (ccid->ccid_hc_tx_packet_sent != NULL)
74 ccid->ccid_hc_tx_packet_sent(sk, more, len);
75}
76
77static inline int ccid_hc_rx_init(struct ccid *ccid, struct sock *sk)
78{
79 int rc = 0;
80 if (ccid->ccid_hc_rx_init != NULL)
81 rc = ccid->ccid_hc_rx_init(sk);
82 return rc;
83}
84
85static inline int ccid_hc_tx_init(struct ccid *ccid, struct sock *sk)
86{
87 int rc = 0;
88 if (ccid->ccid_hc_tx_init != NULL)
89 rc = ccid->ccid_hc_tx_init(sk);
90 return rc;
91}
92
93static inline void ccid_hc_rx_exit(struct ccid *ccid, struct sock *sk)
94{
95 if (ccid->ccid_hc_rx_exit != NULL)
96 ccid->ccid_hc_rx_exit(sk);
97}
98
99static inline void ccid_hc_tx_exit(struct ccid *ccid, struct sock *sk)
100{
101 if (ccid->ccid_hc_tx_exit != NULL)
102 ccid->ccid_hc_tx_exit(sk);
103}
104
105static inline void ccid_hc_rx_packet_recv(struct ccid *ccid, struct sock *sk,
106 struct sk_buff *skb)
107{
108 if (ccid->ccid_hc_rx_packet_recv != NULL)
109 ccid->ccid_hc_rx_packet_recv(sk, skb);
110}
111
112static inline void ccid_hc_tx_packet_recv(struct ccid *ccid, struct sock *sk,
113 struct sk_buff *skb)
114{
115 if (ccid->ccid_hc_tx_packet_recv != NULL)
116 ccid->ccid_hc_tx_packet_recv(sk, skb);
117}
118
119static inline int ccid_hc_tx_parse_options(struct ccid *ccid, struct sock *sk,
120 unsigned char option,
121 unsigned char len, u16 idx,
122 unsigned char* value)
123{
124 int rc = 0;
125 if (ccid->ccid_hc_tx_parse_options != NULL)
126 rc = ccid->ccid_hc_tx_parse_options(sk, option, len, idx, value);
127 return rc;
128}
129
130static inline int ccid_hc_rx_parse_options(struct ccid *ccid, struct sock *sk,
131 unsigned char option,
132 unsigned char len, u16 idx,
133 unsigned char* value)
134{
135 int rc = 0;
136 if (ccid->ccid_hc_rx_parse_options != NULL)
137 rc = ccid->ccid_hc_rx_parse_options(sk, option, len, idx, value);
138 return rc;
139}
140
141static inline void ccid_hc_tx_insert_options(struct ccid *ccid, struct sock *sk,
142 struct sk_buff *skb)
143{
144 if (ccid->ccid_hc_tx_insert_options != NULL)
145 ccid->ccid_hc_tx_insert_options(sk, skb);
146}
147
148static inline void ccid_hc_rx_insert_options(struct ccid *ccid, struct sock *sk,
149 struct sk_buff *skb)
150{
151 if (ccid->ccid_hc_rx_insert_options != NULL)
152 ccid->ccid_hc_rx_insert_options(sk, skb);
153}
154#endif /* _CCID_H */