[deliverable/linux.git] / net / dccp / ccid.h

#ifndef _CCID_H
#define _CCID_H
/*
 *  net/dccp/ccid.h
 *
 *  An implementation of the DCCP protocol
 *  Arnaldo Carvalho de Melo <acme@conectiva.com.br>
 *
 *  CCID infrastructure
 *
 *	This program is free software; you can redistribute it and/or modify it
 *	under the terms of the GNU General Public License version 2 as
 *	published by the Free Software Foundation.
 */

#include <net/sock.h>
#include <linux/compiler.h>
#include <linux/dccp.h>
#include <linux/list.h>
#include <linux/module.h>

#define CCID_MAX 255

struct tcp_info;

struct ccid {
	unsigned char	ccid_id;
	const char	*ccid_name;
	struct module	*ccid_owner;
	int		(*ccid_init)(struct sock *sk);
	void		(*ccid_exit)(struct sock *sk);
	int		(*ccid_hc_rx_init)(struct sock *sk);
	int		(*ccid_hc_tx_init)(struct sock *sk);
	void		(*ccid_hc_rx_exit)(struct sock *sk);
	void		(*ccid_hc_tx_exit)(struct sock *sk);
	void		(*ccid_hc_rx_packet_recv)(struct sock *sk,
						  struct sk_buff *skb);
	int		(*ccid_hc_rx_parse_options)(struct sock *sk,
						    unsigned char option,
						    unsigned char len, u16 idx,
						    unsigned char* value);
	void		(*ccid_hc_rx_insert_options)(struct sock *sk,
						     struct sk_buff *skb);
	void		(*ccid_hc_tx_insert_options)(struct sock *sk,
						     struct sk_buff *skb);
	void		(*ccid_hc_tx_packet_recv)(struct sock *sk,
						  struct sk_buff *skb);
	int		(*ccid_hc_tx_parse_options)(struct sock *sk,
						    unsigned char option,
						    unsigned char len, u16 idx,
						    unsigned char* value);
	int		(*ccid_hc_tx_send_packet)(struct sock *sk,
						  struct sk_buff *skb, int len);
	void		(*ccid_hc_tx_packet_sent)(struct sock *sk, int more,
						  int len);
	void		(*ccid_hc_rx_get_info)(struct sock *sk,
					       struct tcp_info *info);
	void		(*ccid_hc_tx_get_info)(struct sock *sk,
					       struct tcp_info *info);
	int		(*ccid_hc_rx_getsockopt)(struct sock *sk,
						 const int optname, int len,
						 u32 __user *optval,
						 int __user *optlen);
	int		(*ccid_hc_tx_getsockopt)(struct sock *sk,
						 const int optname, int len,
						 u32 __user *optval,
						 int __user *optlen);
};

extern int	   ccid_register(struct ccid *ccid);
extern int	   ccid_unregister(struct ccid *ccid);

extern struct ccid *ccid_init(unsigned char id, struct sock *sk);
extern void	   ccid_exit(struct ccid *ccid, struct sock *sk);

static inline void __ccid_get(struct ccid *ccid)
{
	__module_get(ccid->ccid_owner);
}

static inline int ccid_hc_tx_send_packet(struct ccid *ccid, struct sock *sk,
					 struct sk_buff *skb, int len)
{
	int rc = 0;
	if (ccid->ccid_hc_tx_send_packet != NULL)
		rc = ccid->ccid_hc_tx_send_packet(sk, skb, len);
	return rc;
}

static inline void ccid_hc_tx_packet_sent(struct ccid *ccid, struct sock *sk,
					  int more, int len)
{
	if (ccid->ccid_hc_tx_packet_sent != NULL)
		ccid->ccid_hc_tx_packet_sent(sk, more, len);
}

static inline int ccid_hc_rx_init(struct ccid *ccid, struct sock *sk)
{
	int rc = 0;
	if (ccid->ccid_hc_rx_init != NULL)
		rc = ccid->ccid_hc_rx_init(sk);
	return rc;
}

static inline int ccid_hc_tx_init(struct ccid *ccid, struct sock *sk)
{
	int rc = 0;
	if (ccid->ccid_hc_tx_init != NULL)
		rc = ccid->ccid_hc_tx_init(sk);
	return rc;
}

static inline void ccid_hc_rx_exit(struct ccid *ccid, struct sock *sk)
{
	if (ccid != NULL && ccid->ccid_hc_rx_exit != NULL &&
	    dccp_sk(sk)->dccps_hc_rx_ccid_private != NULL)
		ccid->ccid_hc_rx_exit(sk);
}

static inline void ccid_hc_tx_exit(struct ccid *ccid, struct sock *sk)
{
	if (ccid != NULL && ccid->ccid_hc_tx_exit != NULL &&
	    dccp_sk(sk)->dccps_hc_tx_ccid_private != NULL)
		ccid->ccid_hc_tx_exit(sk);
}

static inline void ccid_hc_rx_packet_recv(struct ccid *ccid, struct sock *sk,
					  struct sk_buff *skb)
{
	if (ccid->ccid_hc_rx_packet_recv != NULL)
		ccid->ccid_hc_rx_packet_recv(sk, skb);
}

static inline void ccid_hc_tx_packet_recv(struct ccid *ccid, struct sock *sk,
					  struct sk_buff *skb)
{
	if (ccid->ccid_hc_tx_packet_recv != NULL)
		ccid->ccid_hc_tx_packet_recv(sk, skb);
}

static inline int ccid_hc_tx_parse_options(struct ccid *ccid, struct sock *sk,
					   unsigned char option,
					   unsigned char len, u16 idx,
					   unsigned char* value)
{
	int rc = 0;
	if (ccid->ccid_hc_tx_parse_options != NULL)
		rc = ccid->ccid_hc_tx_parse_options(sk, option, len, idx,
						    value);
	return rc;
}

static inline int ccid_hc_rx_parse_options(struct ccid *ccid, struct sock *sk,
					   unsigned char option,
					   unsigned char len, u16 idx,
					   unsigned char* value)
{
	int rc = 0;
	if (ccid->ccid_hc_rx_parse_options != NULL)
		rc = ccid->ccid_hc_rx_parse_options(sk, option, len, idx, value);
	return rc;
}

static inline void ccid_hc_tx_insert_options(struct ccid *ccid, struct sock *sk,
					     struct sk_buff *skb)
{
	if (ccid->ccid_hc_tx_insert_options != NULL)
		ccid->ccid_hc_tx_insert_options(sk, skb);
}

static inline void ccid_hc_rx_insert_options(struct ccid *ccid, struct sock *sk,
					     struct sk_buff *skb)
{
	if (ccid->ccid_hc_rx_insert_options != NULL)
		ccid->ccid_hc_rx_insert_options(sk, skb);
}

static inline void ccid_hc_rx_get_info(struct ccid *ccid, struct sock *sk,
				       struct tcp_info *info)
{
	if (ccid->ccid_hc_rx_get_info != NULL)
		ccid->ccid_hc_rx_get_info(sk, info);
}

static inline void ccid_hc_tx_get_info(struct ccid *ccid, struct sock *sk,
				       struct tcp_info *info)
{
	if (ccid->ccid_hc_tx_get_info != NULL)
		ccid->ccid_hc_tx_get_info(sk, info);
}

static inline int ccid_hc_rx_getsockopt(struct ccid *ccid, struct sock *sk,
					const int optname, int len,
					u32 __user *optval, int __user *optlen)
{
	int rc = -ENOPROTOOPT;
	if (ccid->ccid_hc_rx_getsockopt != NULL)
		rc = ccid->ccid_hc_rx_getsockopt(sk, optname, len,
						 optval, optlen);
	return rc;
}

static inline int ccid_hc_tx_getsockopt(struct ccid *ccid, struct sock *sk,
					const int optname, int len,
					u32 __user *optval, int __user *optlen)
{
	int rc = -ENOPROTOOPT;
	if (ccid->ccid_hc_tx_getsockopt != NULL)
		rc = ccid->ccid_hc_tx_getsockopt(sk, optname, len,
						 optval, optlen);
	return rc;
}
#endif /* _CCID_H */
Commit	Line	Data
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;
14c85021 ACM	25
7c657876 ACM	26	struct ccid {
	27	unsigned char ccid_id;
	28	const char *ccid_name;
	29	struct module *ccid_owner;
	30	int (ccid_init)(struct sock sk);
	31	void (ccid_exit)(struct sock sk);
	32	int (ccid_hc_rx_init)(struct sock sk);
	33	int (ccid_hc_tx_init)(struct sock sk);
	34	void (ccid_hc_rx_exit)(struct sock sk);
	35	void (ccid_hc_tx_exit)(struct sock sk);
7690af3f ACM	36	void (ccid_hc_rx_packet_recv)(struct sock sk,
7690af3f ACM	37	struct sk_buff *skb);
7c657876 ACM	38	int (ccid_hc_rx_parse_options)(struct sock sk,
	39	unsigned char option,
	40	unsigned char len, u16 idx,
	41	unsigned char* value);
7690af3f ACM	42	void (ccid_hc_rx_insert_options)(struct sock sk,
	43	struct sk_buff *skb);
	44	void (ccid_hc_tx_insert_options)(struct sock sk,
	45	struct sk_buff *skb);
	46	void (ccid_hc_tx_packet_recv)(struct sock sk,
	47	struct sk_buff *skb);
7c657876 ACM	48	int (ccid_hc_tx_parse_options)(struct sock sk,
	49	unsigned char option,
	50	unsigned char len, u16 idx,
	51	unsigned char* value);
	52	int (ccid_hc_tx_send_packet)(struct sock sk,
27258ee5	53	struct sk_buff *skb, int len);
7690af3f ACM	54	void (ccid_hc_tx_packet_sent)(struct sock sk, int more,
7690af3f ACM	55	int len);
2babe1f6 ACM	56	void (ccid_hc_rx_get_info)(struct sock sk,
	57	struct tcp_info *info);
	58	void (ccid_hc_tx_get_info)(struct sock sk,
	59	struct tcp_info *info);
88f964db ACM	60	int (ccid_hc_rx_getsockopt)(struct sock sk,
	61	const int optname, int len,
	62	u32 __user *optval,
	63	int __user *optlen);
	64	int (ccid_hc_tx_getsockopt)(struct sock sk,
	65	const int optname, int len,
	66	u32 __user *optval,
	67	int __user *optlen);
7c657876 ACM	68	};
	69
	70	extern int ccid_register(struct ccid *ccid);
	71	extern int ccid_unregister(struct ccid *ccid);
	72
	73	extern struct ccid ccid_init(unsigned char id, struct sock sk);
	74	extern void ccid_exit(struct ccid ccid, struct sock sk);
	75
	76	static inline void __ccid_get(struct ccid *ccid)
	77	{
	78	__module_get(ccid->ccid_owner);
	79	}
	80
	81	static inline int ccid_hc_tx_send_packet(struct ccid ccid, struct sock sk,
27258ee5	82	struct sk_buff *skb, int len)
7c657876 ACM	83	{
	84	int rc = 0;
	85	if (ccid->ccid_hc_tx_send_packet != NULL)
27258ee5	86	rc = ccid->ccid_hc_tx_send_packet(sk, skb, len);
7c657876 ACM	87	return rc;
	88	}
	89
	90	static inline void ccid_hc_tx_packet_sent(struct ccid ccid, struct sock sk,
	91	int more, int len)
	92	{
	93	if (ccid->ccid_hc_tx_packet_sent != NULL)
	94	ccid->ccid_hc_tx_packet_sent(sk, more, len);
	95	}
	96
	97	static inline int ccid_hc_rx_init(struct ccid ccid, struct sock sk)
	98	{
	99	int rc = 0;
	100	if (ccid->ccid_hc_rx_init != NULL)
	101	rc = ccid->ccid_hc_rx_init(sk);
	102	return rc;
	103	}
	104
	105	static inline int ccid_hc_tx_init(struct ccid ccid, struct sock sk)
	106	{
	107	int rc = 0;
	108	if (ccid->ccid_hc_tx_init != NULL)
	109	rc = ccid->ccid_hc_tx_init(sk);
	110	return rc;
	111	}
	112
	113	static inline void ccid_hc_rx_exit(struct ccid ccid, struct sock sk)
	114	{
777b25a2	115	if (ccid != NULL && ccid->ccid_hc_rx_exit != NULL &&
012e13ea	116	dccp_sk(sk)->dccps_hc_rx_ccid_private != NULL)
7c657876 ACM	117	ccid->ccid_hc_rx_exit(sk);
	118	}
	119
	120	static inline void ccid_hc_tx_exit(struct ccid ccid, struct sock sk)
	121	{
777b25a2	122	if (ccid != NULL && ccid->ccid_hc_tx_exit != NULL &&
012e13ea	123	dccp_sk(sk)->dccps_hc_tx_ccid_private != NULL)
7c657876 ACM	124	ccid->ccid_hc_tx_exit(sk);
	125	}
	126
	127	static inline void ccid_hc_rx_packet_recv(struct ccid ccid, struct sock sk,
	128	struct sk_buff *skb)
	129	{
	130	if (ccid->ccid_hc_rx_packet_recv != NULL)
	131	ccid->ccid_hc_rx_packet_recv(sk, skb);
	132	}
	133
	134	static inline void ccid_hc_tx_packet_recv(struct ccid ccid, struct sock sk,
	135	struct sk_buff *skb)
	136	{
	137	if (ccid->ccid_hc_tx_packet_recv != NULL)
	138	ccid->ccid_hc_tx_packet_recv(sk, skb);
	139	}
	140
	141	static inline int ccid_hc_tx_parse_options(struct ccid ccid, struct sock sk,
	142	unsigned char option,
	143	unsigned char len, u16 idx,
	144	unsigned char* value)
	145	{
	146	int rc = 0;
	147	if (ccid->ccid_hc_tx_parse_options != NULL)
7690af3f ACM	148	rc = ccid->ccid_hc_tx_parse_options(sk, option, len, idx,
7690af3f ACM	149	value);
7c657876 ACM	150	return rc;
	151	}
	152
	153	static inline int ccid_hc_rx_parse_options(struct ccid ccid, struct sock sk,
	154	unsigned char option,
	155	unsigned char len, u16 idx,
	156	unsigned char* value)
	157	{
	158	int rc = 0;
	159	if (ccid->ccid_hc_rx_parse_options != NULL)
	160	rc = ccid->ccid_hc_rx_parse_options(sk, option, len, idx, value);
	161	return rc;
	162	}
	163
	164	static inline void ccid_hc_tx_insert_options(struct ccid ccid, struct sock sk,
	165	struct sk_buff *skb)
	166	{
	167	if (ccid->ccid_hc_tx_insert_options != NULL)
	168	ccid->ccid_hc_tx_insert_options(sk, skb);
	169	}
	170
	171	static inline void ccid_hc_rx_insert_options(struct ccid ccid, struct sock sk,
	172	struct sk_buff *skb)
	173	{
	174	if (ccid->ccid_hc_rx_insert_options != NULL)
	175	ccid->ccid_hc_rx_insert_options(sk, skb);
	176	}
2babe1f6 ACM	177
	178	static inline void ccid_hc_rx_get_info(struct ccid ccid, struct sock sk,
	179	struct tcp_info *info)
	180	{
	181	if (ccid->ccid_hc_rx_get_info != NULL)
	182	ccid->ccid_hc_rx_get_info(sk, info);
	183	}
	184
	185	static inline void ccid_hc_tx_get_info(struct ccid ccid, struct sock sk,
	186	struct tcp_info *info)
	187	{
	188	if (ccid->ccid_hc_tx_get_info != NULL)
	189	ccid->ccid_hc_tx_get_info(sk, info);
	190	}
88f964db ACM	191
	192	static inline int ccid_hc_rx_getsockopt(struct ccid ccid, struct sock sk,
	193	const int optname, int len,
	194	u32 __user optval, int __user optlen)
	195	{
	196	int rc = -ENOPROTOOPT;
	197	if (ccid->ccid_hc_rx_getsockopt != NULL)
	198	rc = ccid->ccid_hc_rx_getsockopt(sk, optname, len,
	199	optval, optlen);
	200	return rc;
	201	}
	202
	203	static inline int ccid_hc_tx_getsockopt(struct ccid ccid, struct sock sk,
	204	const int optname, int len,
	205	u32 __user optval, int __user optlen)
	206	{
	207	int rc = -ENOPROTOOPT;
	208	if (ccid->ccid_hc_tx_getsockopt != NULL)
	209	rc = ccid->ccid_hc_tx_getsockopt(sk, optname, len,
	210	optval, optlen);
	211	return rc;
	212	}
7c657876	213	#endif /* _CCID_H */