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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> | |
88f964db | 17 | #include <linux/compiler.h> |
7c657876 ACM |
18 | #include <linux/dccp.h> |
19 | #include <linux/list.h> | |
20 | #include <linux/module.h> | |
21 | ||
22 | #define CCID_MAX 255 | |
23 | ||
14c85021 ACM |
24 | struct tcp_info; |
25 | ||
91f0ebf7 | 26 | struct ccid_operations { |
7c657876 ACM |
27 | unsigned char ccid_id; |
28 | const char *ccid_name; | |
29 | struct module *ccid_owner; | |
91f0ebf7 ACM |
30 | kmem_cache_t *ccid_hc_rx_slab; |
31 | __u32 ccid_hc_rx_obj_size; | |
32 | kmem_cache_t *ccid_hc_tx_slab; | |
33 | __u32 ccid_hc_tx_obj_size; | |
34 | int (*ccid_hc_rx_init)(struct ccid *ccid, struct sock *sk); | |
35 | int (*ccid_hc_tx_init)(struct ccid *ccid, struct sock *sk); | |
7c657876 ACM |
36 | void (*ccid_hc_rx_exit)(struct sock *sk); |
37 | void (*ccid_hc_tx_exit)(struct sock *sk); | |
7690af3f ACM |
38 | void (*ccid_hc_rx_packet_recv)(struct sock *sk, |
39 | struct sk_buff *skb); | |
7c657876 ACM |
40 | int (*ccid_hc_rx_parse_options)(struct sock *sk, |
41 | unsigned char option, | |
42 | unsigned char len, u16 idx, | |
43 | unsigned char* value); | |
2d0817d1 | 44 | int (*ccid_hc_rx_insert_options)(struct sock *sk, |
7690af3f | 45 | struct sk_buff *skb); |
2d0817d1 | 46 | int (*ccid_hc_tx_insert_options)(struct sock *sk, |
7690af3f ACM |
47 | struct sk_buff *skb); |
48 | void (*ccid_hc_tx_packet_recv)(struct sock *sk, | |
49 | struct sk_buff *skb); | |
7c657876 ACM |
50 | int (*ccid_hc_tx_parse_options)(struct sock *sk, |
51 | unsigned char option, | |
52 | unsigned char len, u16 idx, | |
53 | unsigned char* value); | |
54 | int (*ccid_hc_tx_send_packet)(struct sock *sk, | |
27258ee5 | 55 | struct sk_buff *skb, int len); |
7690af3f ACM |
56 | void (*ccid_hc_tx_packet_sent)(struct sock *sk, int more, |
57 | int len); | |
2babe1f6 ACM |
58 | void (*ccid_hc_rx_get_info)(struct sock *sk, |
59 | struct tcp_info *info); | |
60 | void (*ccid_hc_tx_get_info)(struct sock *sk, | |
61 | struct tcp_info *info); | |
88f964db ACM |
62 | int (*ccid_hc_rx_getsockopt)(struct sock *sk, |
63 | const int optname, int len, | |
64 | u32 __user *optval, | |
65 | int __user *optlen); | |
66 | int (*ccid_hc_tx_getsockopt)(struct sock *sk, | |
67 | const int optname, int len, | |
68 | u32 __user *optval, | |
69 | int __user *optlen); | |
7c657876 ACM |
70 | }; |
71 | ||
91f0ebf7 ACM |
72 | extern int ccid_register(struct ccid_operations *ccid_ops); |
73 | extern int ccid_unregister(struct ccid_operations *ccid_ops); | |
7c657876 | 74 | |
91f0ebf7 ACM |
75 | struct ccid { |
76 | struct ccid_operations *ccid_ops; | |
77 | char ccid_priv[0]; | |
78 | }; | |
7c657876 | 79 | |
91f0ebf7 | 80 | static inline void *ccid_priv(const struct ccid *ccid) |
7c657876 | 81 | { |
91f0ebf7 | 82 | return (void *)ccid->ccid_priv; |
7c657876 ACM |
83 | } |
84 | ||
91f0ebf7 ACM |
85 | extern struct ccid *ccid_new(unsigned char id, struct sock *sk, int rx, |
86 | gfp_t gfp); | |
87 | ||
88 | extern struct ccid *ccid_hc_rx_new(unsigned char id, struct sock *sk, | |
89 | gfp_t gfp); | |
90 | extern struct ccid *ccid_hc_tx_new(unsigned char id, struct sock *sk, | |
91 | gfp_t gfp); | |
92 | ||
93 | extern void ccid_hc_rx_delete(struct ccid *ccid, struct sock *sk); | |
94 | extern void ccid_hc_tx_delete(struct ccid *ccid, struct sock *sk); | |
95 | ||
7c657876 | 96 | static inline int ccid_hc_tx_send_packet(struct ccid *ccid, struct sock *sk, |
27258ee5 | 97 | struct sk_buff *skb, int len) |
7c657876 ACM |
98 | { |
99 | int rc = 0; | |
91f0ebf7 ACM |
100 | if (ccid->ccid_ops->ccid_hc_tx_send_packet != NULL) |
101 | rc = ccid->ccid_ops->ccid_hc_tx_send_packet(sk, skb, len); | |
7c657876 ACM |
102 | return rc; |
103 | } | |
104 | ||
105 | static inline void ccid_hc_tx_packet_sent(struct ccid *ccid, struct sock *sk, | |
106 | int more, int len) | |
107 | { | |
91f0ebf7 ACM |
108 | if (ccid->ccid_ops->ccid_hc_tx_packet_sent != NULL) |
109 | ccid->ccid_ops->ccid_hc_tx_packet_sent(sk, more, len); | |
7c657876 ACM |
110 | } |
111 | ||
112 | static inline void ccid_hc_rx_packet_recv(struct ccid *ccid, struct sock *sk, | |
113 | struct sk_buff *skb) | |
114 | { | |
91f0ebf7 ACM |
115 | if (ccid->ccid_ops->ccid_hc_rx_packet_recv != NULL) |
116 | ccid->ccid_ops->ccid_hc_rx_packet_recv(sk, skb); | |
7c657876 ACM |
117 | } |
118 | ||
119 | static inline void ccid_hc_tx_packet_recv(struct ccid *ccid, struct sock *sk, | |
120 | struct sk_buff *skb) | |
121 | { | |
91f0ebf7 ACM |
122 | if (ccid->ccid_ops->ccid_hc_tx_packet_recv != NULL) |
123 | ccid->ccid_ops->ccid_hc_tx_packet_recv(sk, skb); | |
7c657876 ACM |
124 | } |
125 | ||
126 | static inline int ccid_hc_tx_parse_options(struct ccid *ccid, struct sock *sk, | |
127 | unsigned char option, | |
128 | unsigned char len, u16 idx, | |
129 | unsigned char* value) | |
130 | { | |
131 | int rc = 0; | |
91f0ebf7 ACM |
132 | if (ccid->ccid_ops->ccid_hc_tx_parse_options != NULL) |
133 | rc = ccid->ccid_ops->ccid_hc_tx_parse_options(sk, option, len, idx, | |
7690af3f | 134 | value); |
7c657876 ACM |
135 | return rc; |
136 | } | |
137 | ||
138 | static inline int ccid_hc_rx_parse_options(struct ccid *ccid, struct sock *sk, | |
139 | unsigned char option, | |
140 | unsigned char len, u16 idx, | |
141 | unsigned char* value) | |
142 | { | |
143 | int rc = 0; | |
91f0ebf7 ACM |
144 | if (ccid->ccid_ops->ccid_hc_rx_parse_options != NULL) |
145 | rc = ccid->ccid_ops->ccid_hc_rx_parse_options(sk, option, len, idx, value); | |
7c657876 ACM |
146 | return rc; |
147 | } | |
148 | ||
2d0817d1 ACM |
149 | static inline int ccid_hc_tx_insert_options(struct ccid *ccid, struct sock *sk, |
150 | struct sk_buff *skb) | |
7c657876 | 151 | { |
91f0ebf7 | 152 | if (ccid->ccid_ops->ccid_hc_tx_insert_options != NULL) |
2d0817d1 ACM |
153 | return ccid->ccid_ops->ccid_hc_tx_insert_options(sk, skb); |
154 | return 0; | |
7c657876 ACM |
155 | } |
156 | ||
2d0817d1 ACM |
157 | static inline int ccid_hc_rx_insert_options(struct ccid *ccid, struct sock *sk, |
158 | struct sk_buff *skb) | |
7c657876 | 159 | { |
91f0ebf7 | 160 | if (ccid->ccid_ops->ccid_hc_rx_insert_options != NULL) |
2d0817d1 ACM |
161 | return ccid->ccid_ops->ccid_hc_rx_insert_options(sk, skb); |
162 | return 0; | |
7c657876 | 163 | } |
2babe1f6 ACM |
164 | |
165 | static inline void ccid_hc_rx_get_info(struct ccid *ccid, struct sock *sk, | |
166 | struct tcp_info *info) | |
167 | { | |
91f0ebf7 ACM |
168 | if (ccid->ccid_ops->ccid_hc_rx_get_info != NULL) |
169 | ccid->ccid_ops->ccid_hc_rx_get_info(sk, info); | |
2babe1f6 ACM |
170 | } |
171 | ||
172 | static inline void ccid_hc_tx_get_info(struct ccid *ccid, struct sock *sk, | |
173 | struct tcp_info *info) | |
174 | { | |
91f0ebf7 ACM |
175 | if (ccid->ccid_ops->ccid_hc_tx_get_info != NULL) |
176 | ccid->ccid_ops->ccid_hc_tx_get_info(sk, info); | |
2babe1f6 | 177 | } |
88f964db ACM |
178 | |
179 | static inline int ccid_hc_rx_getsockopt(struct ccid *ccid, struct sock *sk, | |
180 | const int optname, int len, | |
181 | u32 __user *optval, int __user *optlen) | |
182 | { | |
183 | int rc = -ENOPROTOOPT; | |
91f0ebf7 ACM |
184 | if (ccid->ccid_ops->ccid_hc_rx_getsockopt != NULL) |
185 | rc = ccid->ccid_ops->ccid_hc_rx_getsockopt(sk, optname, len, | |
88f964db ACM |
186 | optval, optlen); |
187 | return rc; | |
188 | } | |
189 | ||
190 | static inline int ccid_hc_tx_getsockopt(struct ccid *ccid, struct sock *sk, | |
191 | const int optname, int len, | |
192 | u32 __user *optval, int __user *optlen) | |
193 | { | |
194 | int rc = -ENOPROTOOPT; | |
91f0ebf7 ACM |
195 | if (ccid->ccid_ops->ccid_hc_tx_getsockopt != NULL) |
196 | rc = ccid->ccid_ops->ccid_hc_tx_getsockopt(sk, optname, len, | |
88f964db ACM |
197 | optval, optlen); |
198 | return rc; | |
199 | } | |
7c657876 | 200 | #endif /* _CCID_H */ |