6 * An implementation of the DCCP protocol
7 * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
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.
17 #include <linux/compiler.h>
18 #include <linux/dccp.h>
19 #include <linux/list.h>
20 #include <linux/module.h>
25 unsigned char ccid_id;
26 const char *ccid_name;
27 struct module *ccid_owner;
28 int (*ccid_init)(struct sock *sk);
29 void (*ccid_exit)(struct sock *sk);
30 int (*ccid_hc_rx_init)(struct sock *sk);
31 int (*ccid_hc_tx_init)(struct sock *sk);
32 void (*ccid_hc_rx_exit)(struct sock *sk);
33 void (*ccid_hc_tx_exit)(struct sock *sk);
34 void (*ccid_hc_rx_packet_recv)(struct sock *sk,
36 int (*ccid_hc_rx_parse_options)(struct sock *sk,
38 unsigned char len, u16 idx,
39 unsigned char* value);
40 void (*ccid_hc_rx_insert_options)(struct sock *sk,
42 void (*ccid_hc_tx_insert_options)(struct sock *sk,
44 void (*ccid_hc_tx_packet_recv)(struct sock *sk,
46 int (*ccid_hc_tx_parse_options)(struct sock *sk,
48 unsigned char len, u16 idx,
49 unsigned char* value);
50 int (*ccid_hc_tx_send_packet)(struct sock *sk,
51 struct sk_buff *skb, int len);
52 void (*ccid_hc_tx_packet_sent)(struct sock *sk, int more,
54 void (*ccid_hc_rx_get_info)(struct sock *sk,
55 struct tcp_info *info);
56 void (*ccid_hc_tx_get_info)(struct sock *sk,
57 struct tcp_info *info);
58 int (*ccid_hc_rx_getsockopt)(struct sock *sk,
59 const int optname, int len,
62 int (*ccid_hc_tx_getsockopt)(struct sock *sk,
63 const int optname, int len,
68 extern int ccid_register(struct ccid *ccid);
69 extern int ccid_unregister(struct ccid *ccid);
71 extern struct ccid *ccid_init(unsigned char id, struct sock *sk);
72 extern void ccid_exit(struct ccid *ccid, struct sock *sk);
74 static inline void __ccid_get(struct ccid *ccid)
76 __module_get(ccid->ccid_owner);
79 static inline int ccid_hc_tx_send_packet(struct ccid *ccid, struct sock *sk,
80 struct sk_buff *skb, int len)
83 if (ccid->ccid_hc_tx_send_packet != NULL)
84 rc = ccid->ccid_hc_tx_send_packet(sk, skb, len);
88 static inline void ccid_hc_tx_packet_sent(struct ccid *ccid, struct sock *sk,
91 if (ccid->ccid_hc_tx_packet_sent != NULL)
92 ccid->ccid_hc_tx_packet_sent(sk, more, len);
95 static inline int ccid_hc_rx_init(struct ccid *ccid, struct sock *sk)
98 if (ccid->ccid_hc_rx_init != NULL)
99 rc = ccid->ccid_hc_rx_init(sk);
103 static inline int ccid_hc_tx_init(struct ccid *ccid, struct sock *sk)
106 if (ccid->ccid_hc_tx_init != NULL)
107 rc = ccid->ccid_hc_tx_init(sk);
111 static inline void ccid_hc_rx_exit(struct ccid *ccid, struct sock *sk)
113 if (ccid != NULL && ccid->ccid_hc_rx_exit != NULL &&
114 dccp_sk(sk)->dccps_hc_rx_ccid_private != NULL)
115 ccid->ccid_hc_rx_exit(sk);
118 static inline void ccid_hc_tx_exit(struct ccid *ccid, struct sock *sk)
120 if (ccid != NULL && ccid->ccid_hc_tx_exit != NULL &&
121 dccp_sk(sk)->dccps_hc_tx_ccid_private != NULL)
122 ccid->ccid_hc_tx_exit(sk);
125 static inline void ccid_hc_rx_packet_recv(struct ccid *ccid, struct sock *sk,
128 if (ccid->ccid_hc_rx_packet_recv != NULL)
129 ccid->ccid_hc_rx_packet_recv(sk, skb);
132 static inline void ccid_hc_tx_packet_recv(struct ccid *ccid, struct sock *sk,
135 if (ccid->ccid_hc_tx_packet_recv != NULL)
136 ccid->ccid_hc_tx_packet_recv(sk, skb);
139 static inline int ccid_hc_tx_parse_options(struct ccid *ccid, struct sock *sk,
140 unsigned char option,
141 unsigned char len, u16 idx,
142 unsigned char* value)
145 if (ccid->ccid_hc_tx_parse_options != NULL)
146 rc = ccid->ccid_hc_tx_parse_options(sk, option, len, idx,
151 static inline int ccid_hc_rx_parse_options(struct ccid *ccid, struct sock *sk,
152 unsigned char option,
153 unsigned char len, u16 idx,
154 unsigned char* value)
157 if (ccid->ccid_hc_rx_parse_options != NULL)
158 rc = ccid->ccid_hc_rx_parse_options(sk, option, len, idx, value);
162 static inline void ccid_hc_tx_insert_options(struct ccid *ccid, struct sock *sk,
165 if (ccid->ccid_hc_tx_insert_options != NULL)
166 ccid->ccid_hc_tx_insert_options(sk, skb);
169 static inline void ccid_hc_rx_insert_options(struct ccid *ccid, struct sock *sk,
172 if (ccid->ccid_hc_rx_insert_options != NULL)
173 ccid->ccid_hc_rx_insert_options(sk, skb);
176 static inline void ccid_hc_rx_get_info(struct ccid *ccid, struct sock *sk,
177 struct tcp_info *info)
179 if (ccid->ccid_hc_rx_get_info != NULL)
180 ccid->ccid_hc_rx_get_info(sk, info);
183 static inline void ccid_hc_tx_get_info(struct ccid *ccid, struct sock *sk,
184 struct tcp_info *info)
186 if (ccid->ccid_hc_tx_get_info != NULL)
187 ccid->ccid_hc_tx_get_info(sk, info);
190 static inline int ccid_hc_rx_getsockopt(struct ccid *ccid, struct sock *sk,
191 const int optname, int len,
192 u32 __user *optval, int __user *optlen)
194 int rc = -ENOPROTOOPT;
195 if (ccid->ccid_hc_rx_getsockopt != NULL)
196 rc = ccid->ccid_hc_rx_getsockopt(sk, optname, len,
201 static inline int ccid_hc_tx_getsockopt(struct ccid *ccid, struct sock *sk,
202 const int optname, int len,
203 u32 __user *optval, int __user *optlen)
205 int rc = -ENOPROTOOPT;
206 if (ccid->ccid_hc_tx_getsockopt != NULL)
207 rc = ccid->ccid_hc_tx_getsockopt(sk, optname, len,