[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_operations {
	unsigned char	ccid_id;
	const char	*ccid_name;
	struct module	*ccid_owner;
	struct kmem_cache	*ccid_hc_rx_slab;
	__u32		ccid_hc_rx_obj_size;
	struct kmem_cache	*ccid_hc_tx_slab;
	__u32		ccid_hc_tx_obj_size;
	int		(*ccid_hc_rx_init)(struct ccid *ccid, struct sock *sk);
	int		(*ccid_hc_tx_init)(struct ccid *ccid, 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);
	int		(*ccid_hc_rx_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);
	void		(*ccid_hc_tx_packet_sent)(struct sock *sk,
						  int more, unsigned 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_operations *ccid_ops);
extern int ccid_unregister(struct ccid_operations *ccid_ops);

struct ccid {
	struct ccid_operations *ccid_ops;
	char		       ccid_priv[0];
};

static inline void *ccid_priv(const struct ccid *ccid)
{
	return (void *)ccid->ccid_priv;
}

extern struct ccid *ccid_new(unsigned char id, struct sock *sk, int rx,
			     gfp_t gfp);

extern struct ccid *ccid_hc_rx_new(unsigned char id, struct sock *sk,
				   gfp_t gfp);
extern struct ccid *ccid_hc_tx_new(unsigned char id, struct sock *sk,
				   gfp_t gfp);

extern void ccid_hc_rx_delete(struct ccid *ccid, struct sock *sk);
extern void ccid_hc_tx_delete(struct ccid *ccid, struct sock *sk);

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

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

static inline void ccid_hc_rx_packet_recv(struct ccid *ccid, struct sock *sk,
					  struct sk_buff *skb)
{
	if (ccid->ccid_ops->ccid_hc_rx_packet_recv != NULL)
		ccid->ccid_ops->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_ops->ccid_hc_tx_packet_recv != NULL)
		ccid->ccid_ops->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_ops->ccid_hc_tx_parse_options != NULL)
		rc = ccid->ccid_ops->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_ops->ccid_hc_rx_parse_options != NULL)
		rc = ccid->ccid_ops->ccid_hc_rx_parse_options(sk, option, len, idx, value);
	return rc;
}

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

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