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