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-rw-r--r--net/dccp/ccid.h180
1 files changed, 180 insertions, 0 deletions
diff --git a/net/dccp/ccid.h b/net/dccp/ccid.h
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index 000000000000..962f1e9e2f7e
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+++ b/net/dccp/ccid.h
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1#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,
34 struct sk_buff *skb);
35 int (*ccid_hc_rx_parse_options)(struct sock *sk,
36 unsigned char option,
37 unsigned char len, u16 idx,
38 unsigned char* value);
39 void (*ccid_hc_rx_insert_options)(struct sock *sk,
40 struct sk_buff *skb);
41 void (*ccid_hc_tx_insert_options)(struct sock *sk,
42 struct sk_buff *skb);
43 void (*ccid_hc_tx_packet_recv)(struct sock *sk,
44 struct sk_buff *skb);
45 int (*ccid_hc_tx_parse_options)(struct sock *sk,
46 unsigned char option,
47 unsigned char len, u16 idx,
48 unsigned char* value);
49 int (*ccid_hc_tx_send_packet)(struct sock *sk,
50 struct sk_buff *skb, int len);
51 void (*ccid_hc_tx_packet_sent)(struct sock *sk, int more,
52 int len);
53 void (*ccid_hc_rx_get_info)(struct sock *sk,
54 struct tcp_info *info);
55 void (*ccid_hc_tx_get_info)(struct sock *sk,
56 struct tcp_info *info);
57};
58
59extern int ccid_register(struct ccid *ccid);
60extern int ccid_unregister(struct ccid *ccid);
61
62extern struct ccid *ccid_init(unsigned char id, struct sock *sk);
63extern void ccid_exit(struct ccid *ccid, struct sock *sk);
64
65static inline void __ccid_get(struct ccid *ccid)
66{
67 __module_get(ccid->ccid_owner);
68}
69
70static inline int ccid_hc_tx_send_packet(struct ccid *ccid, struct sock *sk,
71 struct sk_buff *skb, int len)
72{
73 int rc = 0;
74 if (ccid->ccid_hc_tx_send_packet != NULL)
75 rc = ccid->ccid_hc_tx_send_packet(sk, skb, len);
76 return rc;
77}
78
79static inline void ccid_hc_tx_packet_sent(struct ccid *ccid, struct sock *sk,
80 int more, int len)
81{
82 if (ccid->ccid_hc_tx_packet_sent != NULL)
83 ccid->ccid_hc_tx_packet_sent(sk, more, len);
84}
85
86static inline int ccid_hc_rx_init(struct ccid *ccid, struct sock *sk)
87{
88 int rc = 0;
89 if (ccid->ccid_hc_rx_init != NULL)
90 rc = ccid->ccid_hc_rx_init(sk);
91 return rc;
92}
93
94static inline int ccid_hc_tx_init(struct ccid *ccid, struct sock *sk)
95{
96 int rc = 0;
97 if (ccid->ccid_hc_tx_init != NULL)
98 rc = ccid->ccid_hc_tx_init(sk);
99 return rc;
100}
101
102static inline void ccid_hc_rx_exit(struct ccid *ccid, struct sock *sk)
103{
104 if (ccid->ccid_hc_rx_exit != NULL &&
105 dccp_sk(sk)->dccps_hc_rx_ccid_private != NULL)
106 ccid->ccid_hc_rx_exit(sk);
107}
108
109static inline void ccid_hc_tx_exit(struct ccid *ccid, struct sock *sk)
110{
111 if (ccid->ccid_hc_tx_exit != NULL &&
112 dccp_sk(sk)->dccps_hc_tx_ccid_private != NULL)
113 ccid->ccid_hc_tx_exit(sk);
114}
115
116static inline void ccid_hc_rx_packet_recv(struct ccid *ccid, struct sock *sk,
117 struct sk_buff *skb)
118{
119 if (ccid->ccid_hc_rx_packet_recv != NULL)
120 ccid->ccid_hc_rx_packet_recv(sk, skb);
121}
122
123static inline void ccid_hc_tx_packet_recv(struct ccid *ccid, struct sock *sk,
124 struct sk_buff *skb)
125{
126 if (ccid->ccid_hc_tx_packet_recv != NULL)
127 ccid->ccid_hc_tx_packet_recv(sk, skb);
128}
129
130static inline int ccid_hc_tx_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_tx_parse_options != NULL)
137 rc = ccid->ccid_hc_tx_parse_options(sk, option, len, idx,
138 value);
139 return rc;
140}
141
142static inline int ccid_hc_rx_parse_options(struct ccid *ccid, struct sock *sk,
143 unsigned char option,
144 unsigned char len, u16 idx,
145 unsigned char* value)
146{
147 int rc = 0;
148 if (ccid->ccid_hc_rx_parse_options != NULL)
149 rc = ccid->ccid_hc_rx_parse_options(sk, option, len, idx, value);
150 return rc;
151}
152
153static inline void ccid_hc_tx_insert_options(struct ccid *ccid, struct sock *sk,
154 struct sk_buff *skb)
155{
156 if (ccid->ccid_hc_tx_insert_options != NULL)
157 ccid->ccid_hc_tx_insert_options(sk, skb);
158}
159
160static inline void ccid_hc_rx_insert_options(struct ccid *ccid, struct sock *sk,
161 struct sk_buff *skb)
162{
163 if (ccid->ccid_hc_rx_insert_options != NULL)
164 ccid->ccid_hc_rx_insert_options(sk, skb);
165}
166
167static inline void ccid_hc_rx_get_info(struct ccid *ccid, struct sock *sk,
168 struct tcp_info *info)
169{
170 if (ccid->ccid_hc_rx_get_info != NULL)
171 ccid->ccid_hc_rx_get_info(sk, info);
172}
173
174static inline void ccid_hc_tx_get_info(struct ccid *ccid, struct sock *sk,
175 struct tcp_info *info)
176{
177 if (ccid->ccid_hc_tx_get_info != NULL)
178 ccid->ccid_hc_tx_get_info(sk, info);
179}
180#endif /* _CCID_H */
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