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7c657876 ACM |
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 | ||
23 | struct 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, | |
46 | struct sk_buff *skb, int len, | |
47 | long *delay); | |
48 | void (*ccid_hc_tx_packet_sent)(struct sock *sk, int more, int len); | |
49 | }; | |
50 | ||
51 | extern int ccid_register(struct ccid *ccid); | |
52 | extern int ccid_unregister(struct ccid *ccid); | |
53 | ||
54 | extern struct ccid *ccid_init(unsigned char id, struct sock *sk); | |
55 | extern void ccid_exit(struct ccid *ccid, struct sock *sk); | |
56 | ||
57 | static inline void __ccid_get(struct ccid *ccid) | |
58 | { | |
59 | __module_get(ccid->ccid_owner); | |
60 | } | |
61 | ||
62 | static inline int ccid_hc_tx_send_packet(struct ccid *ccid, struct sock *sk, | |
63 | struct sk_buff *skb, int len, | |
64 | long *delay) | |
65 | { | |
66 | int rc = 0; | |
67 | if (ccid->ccid_hc_tx_send_packet != NULL) | |
68 | rc = ccid->ccid_hc_tx_send_packet(sk, skb, len, delay); | |
69 | return rc; | |
70 | } | |
71 | ||
72 | static inline void ccid_hc_tx_packet_sent(struct ccid *ccid, struct sock *sk, | |
73 | int more, int len) | |
74 | { | |
75 | if (ccid->ccid_hc_tx_packet_sent != NULL) | |
76 | ccid->ccid_hc_tx_packet_sent(sk, more, len); | |
77 | } | |
78 | ||
79 | static inline int ccid_hc_rx_init(struct ccid *ccid, struct sock *sk) | |
80 | { | |
81 | int rc = 0; | |
82 | if (ccid->ccid_hc_rx_init != NULL) | |
83 | rc = ccid->ccid_hc_rx_init(sk); | |
84 | return rc; | |
85 | } | |
86 | ||
87 | static inline int ccid_hc_tx_init(struct ccid *ccid, struct sock *sk) | |
88 | { | |
89 | int rc = 0; | |
90 | if (ccid->ccid_hc_tx_init != NULL) | |
91 | rc = ccid->ccid_hc_tx_init(sk); | |
92 | return rc; | |
93 | } | |
94 | ||
95 | static inline void ccid_hc_rx_exit(struct ccid *ccid, struct sock *sk) | |
96 | { | |
97 | if (ccid->ccid_hc_rx_exit != NULL) | |
98 | ccid->ccid_hc_rx_exit(sk); | |
99 | } | |
100 | ||
101 | static inline void ccid_hc_tx_exit(struct ccid *ccid, struct sock *sk) | |
102 | { | |
103 | if (ccid->ccid_hc_tx_exit != NULL) | |
104 | ccid->ccid_hc_tx_exit(sk); | |
105 | } | |
106 | ||
107 | static inline void ccid_hc_rx_packet_recv(struct ccid *ccid, struct sock *sk, | |
108 | struct sk_buff *skb) | |
109 | { | |
110 | if (ccid->ccid_hc_rx_packet_recv != NULL) | |
111 | ccid->ccid_hc_rx_packet_recv(sk, skb); | |
112 | } | |
113 | ||
114 | static inline void ccid_hc_tx_packet_recv(struct ccid *ccid, struct sock *sk, | |
115 | struct sk_buff *skb) | |
116 | { | |
117 | if (ccid->ccid_hc_tx_packet_recv != NULL) | |
118 | ccid->ccid_hc_tx_packet_recv(sk, skb); | |
119 | } | |
120 | ||
121 | static inline int ccid_hc_tx_parse_options(struct ccid *ccid, struct sock *sk, | |
122 | unsigned char option, | |
123 | unsigned char len, u16 idx, | |
124 | unsigned char* value) | |
125 | { | |
126 | int rc = 0; | |
127 | if (ccid->ccid_hc_tx_parse_options != NULL) | |
128 | rc = ccid->ccid_hc_tx_parse_options(sk, option, len, idx, value); | |
129 | return rc; | |
130 | } | |
131 | ||
132 | static inline int ccid_hc_rx_parse_options(struct ccid *ccid, struct sock *sk, | |
133 | unsigned char option, | |
134 | unsigned char len, u16 idx, | |
135 | unsigned char* value) | |
136 | { | |
137 | int rc = 0; | |
138 | if (ccid->ccid_hc_rx_parse_options != NULL) | |
139 | rc = ccid->ccid_hc_rx_parse_options(sk, option, len, idx, value); | |
140 | return rc; | |
141 | } | |
142 | ||
143 | static inline void ccid_hc_tx_insert_options(struct ccid *ccid, struct sock *sk, | |
144 | struct sk_buff *skb) | |
145 | { | |
146 | if (ccid->ccid_hc_tx_insert_options != NULL) | |
147 | ccid->ccid_hc_tx_insert_options(sk, skb); | |
148 | } | |
149 | ||
150 | static inline void ccid_hc_rx_insert_options(struct ccid *ccid, struct sock *sk, | |
151 | struct sk_buff *skb) | |
152 | { | |
153 | if (ccid->ccid_hc_rx_insert_options != NULL) | |
154 | ccid->ccid_hc_rx_insert_options(sk, skb); | |
155 | } | |
156 | #endif /* _CCID_H */ |