[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / net / llc_conn.h

#ifndef LLC_CONN_H
#define LLC_CONN_H
/*
 * Copyright (c) 1997 by Procom Technology, Inc.
 * 		 2001, 2002 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
 *
 * This program can be redistributed or modified under the terms of the
 * GNU General Public License as published by the Free Software Foundation.
 * This program is distributed without any warranty or implied warranty
 * of merchantability or fitness for a particular purpose.
 *
 * See the GNU General Public License for more details.
 */
#include <linux/timer.h>
#include <net/llc_if.h>
#include <net/sock.h>
#include <linux/llc.h>

#define LLC_EVENT                1
#define LLC_PACKET               2

#define LLC2_P_TIME               2
#define LLC2_ACK_TIME             1
#define LLC2_REJ_TIME             3
#define LLC2_BUSY_TIME            3

struct llc_timer {
	struct timer_list timer;
	unsigned long	  expire;	/* timer expire time */
};

struct llc_sock {
	/* struct sock must be the first member of llc_sock */
	struct sock	    sk;
	struct sockaddr_llc addr;		/* address sock is bound to */
	u8		    state;		/* state of connection */
	struct llc_sap	    *sap;		/* pointer to parent SAP */
	struct llc_addr	    laddr;		/* lsap/mac pair */
	struct llc_addr	    daddr;		/* dsap/mac pair */
	struct net_device   *dev;		/* device to send to remote */
	u8		    retry_count;	/* number of retries */
	u8		    ack_must_be_send;
	u8		    first_pdu_Ns;
	u8		    npta;
	struct llc_timer    ack_timer;
	struct llc_timer    pf_cycle_timer;
	struct llc_timer    rej_sent_timer;
	struct llc_timer    busy_state_timer;	/* ind busy clr at remote LLC */
	u8		    vS;			/* seq# next in-seq I-PDU tx'd*/
	u8		    vR;			/* seq# next in-seq I-PDU rx'd*/
	u32		    n2;			/* max nbr re-tx's for timeout*/
	u32		    n1;			/* max nbr octets in I PDU */
	u8		    k;			/* tx window size; max = 127 */
	u8		    rw;			/* rx window size; max = 127 */
	u8		    p_flag;		/* state flags */
	u8		    f_flag;
	u8		    s_flag;
	u8		    data_flag;
	u8		    remote_busy_flag;
	u8		    cause_flag;
	struct sk_buff_head pdu_unack_q;	/* PUDs sent/waiting ack */
	u16		    link;		/* network layer link number */
	u8		    X;			/* a temporary variable */
	u8		    ack_pf;		/* this flag indicates what is
						   the P-bit of acknowledge */
	u8		    failed_data_req; /* recognize that already exist a
						failed llc_data_req_handler
						(tx_buffer_full or unacceptable
						state */
	u8		    dec_step;
	u8		    inc_cntr;
	u8		    dec_cntr;
	u8		    connect_step;
	u8		    last_nr;	   /* NR of last pdu received */
	u32		    rx_pdu_hdr;	   /* used for saving header of last pdu
					      received and caused sending FRMR.
					      Used for resending FRMR */
};

static inline struct llc_sock *llc_sk(const struct sock *sk)
{
	return (struct llc_sock *)sk;
}

static __inline__ void llc_set_backlog_type(struct sk_buff *skb, char type)
{
	skb->cb[sizeof(skb->cb) - 1] = type;
}

static __inline__ char llc_backlog_type(struct sk_buff *skb)
{
	return skb->cb[sizeof(skb->cb) - 1];
}

extern struct sock *llc_sk_alloc(int family, int priority, struct proto *prot);
extern void llc_sk_free(struct sock *sk);

extern void llc_sk_reset(struct sock *sk);

/* Access to a connection */
extern int llc_conn_state_process(struct sock *sk, struct sk_buff *skb);
extern void llc_conn_send_pdu(struct sock *sk, struct sk_buff *skb);
extern void llc_conn_rtn_pdu(struct sock *sk, struct sk_buff *skb);
extern void llc_conn_resend_i_pdu_as_cmd(struct sock *sk, u8 nr,
					 u8 first_p_bit);
extern void llc_conn_resend_i_pdu_as_rsp(struct sock *sk, u8 nr,
					 u8 first_f_bit);
extern int llc_conn_remove_acked_pdus(struct sock *conn, u8 nr,
				      u16 *how_many_unacked);
extern struct sock *llc_lookup_established(struct llc_sap *sap,
					   struct llc_addr *daddr,
					   struct llc_addr *laddr);
extern void llc_sap_add_socket(struct llc_sap *sap, struct sock *sk);
extern void llc_sap_remove_socket(struct llc_sap *sap, struct sock *sk);

extern u8 llc_data_accept_state(u8 state);
extern void llc_build_offset_table(void);
#endif /* LLC_CONN_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef LLC_CONN_H
	2	#define LLC_CONN_H
	3	/*
	4	* Copyright (c) 1997 by Procom Technology, Inc.
	5	* 2001, 2002 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
	6	*
	7	* This program can be redistributed or modified under the terms of the
	8	* GNU General Public License as published by the Free Software Foundation.
	9	* This program is distributed without any warranty or implied warranty
	10	* of merchantability or fitness for a particular purpose.
	11	*
	12	* See the GNU General Public License for more details.
	13	*/
	14	#include <linux/timer.h>
	15	#include <net/llc_if.h>
	16	#include <net/sock.h>
	17	#include <linux/llc.h>
	18
	19	#define LLC_EVENT 1
	20	#define LLC_PACKET 2
	21
590232a7 ACM	22	#define LLC2_P_TIME 2
	23	#define LLC2_ACK_TIME 1
	24	#define LLC2_REJ_TIME 3
	25	#define LLC2_BUSY_TIME 3
1da177e4 LT	26
	27	struct llc_timer {
	28	struct timer_list timer;
590232a7	29	unsigned long expire; /* timer expire time */
1da177e4 LT	30	};
	31
	32	struct llc_sock {
	33	/* struct sock must be the first member of llc_sock */
	34	struct sock sk;
	35	struct sockaddr_llc addr; /* address sock is bound to */
	36	u8 state; /* state of connection */
	37	struct llc_sap sap; / pointer to parent SAP */
	38	struct llc_addr laddr; /* lsap/mac pair */
	39	struct llc_addr daddr; /* dsap/mac pair */
	40	struct net_device dev; / device to send to remote */
	41	u8 retry_count; /* number of retries */
	42	u8 ack_must_be_send;
	43	u8 first_pdu_Ns;
	44	u8 npta;
	45	struct llc_timer ack_timer;
	46	struct llc_timer pf_cycle_timer;
	47	struct llc_timer rej_sent_timer;
	48	struct llc_timer busy_state_timer; /* ind busy clr at remote LLC */
	49	u8 vS; /* seq# next in-seq I-PDU tx'd*/
	50	u8 vR; /* seq# next in-seq I-PDU rx'd*/
	51	u32 n2; /* max nbr re-tx's for timeout*/
	52	u32 n1; /* max nbr octets in I PDU */
	53	u8 k; /* tx window size; max = 127 */
	54	u8 rw; /* rx window size; max = 127 */
	55	u8 p_flag; /* state flags */
	56	u8 f_flag;
	57	u8 s_flag;
	58	u8 data_flag;
	59	u8 remote_busy_flag;
	60	u8 cause_flag;
	61	struct sk_buff_head pdu_unack_q; /* PUDs sent/waiting ack */
	62	u16 link; /* network layer link number */
	63	u8 X; /* a temporary variable */
	64	u8 ack_pf; /* this flag indicates what is
	65	the P-bit of acknowledge */
	66	u8 failed_data_req; /* recognize that already exist a
	67	failed llc_data_req_handler
	68	(tx_buffer_full or unacceptable
	69	state */
	70	u8 dec_step;
	71	u8 inc_cntr;
	72	u8 dec_cntr;
	73	u8 connect_step;
	74	u8 last_nr; /* NR of last pdu received */
	75	u32 rx_pdu_hdr; /* used for saving header of last pdu
	76	received and caused sending FRMR.
	77	Used for resending FRMR */
	78	};
	79
	80	static inline struct llc_sock llc_sk(const struct sock sk)
	81	{
	82	return (struct llc_sock *)sk;
	83	}
	84
	85	static __inline__ void llc_set_backlog_type(struct sk_buff *skb, char type)
	86	{
	87	skb->cb[sizeof(skb->cb) - 1] = type;
	88	}
	89
	90	static __inline__ char llc_backlog_type(struct sk_buff *skb)
	91	{
	92	return skb->cb[sizeof(skb->cb) - 1];
	93	}
94
95	extern struct sock llc_sk_alloc(int family, int priority, struct proto prot);
96	extern void llc_sk_free(struct sock *sk);
97
98	extern void llc_sk_reset(struct sock *sk);
99
100	/* Access to a connection */
101	extern int llc_conn_state_process(struct sock sk, struct sk_buff skb);
102	extern void llc_conn_send_pdu(struct sock sk, struct sk_buff skb);
103	extern void llc_conn_rtn_pdu(struct sock sk, struct sk_buff skb);
104	extern void llc_conn_resend_i_pdu_as_cmd(struct sock *sk, u8 nr,
105	u8 first_p_bit);
106	extern void llc_conn_resend_i_pdu_as_rsp(struct sock *sk, u8 nr,
107	u8 first_f_bit);
108	extern int llc_conn_remove_acked_pdus(struct sock *conn, u8 nr,
109	u16 *how_many_unacked);
110	extern struct sock llc_lookup_established(struct llc_sap sap,
111	struct llc_addr *daddr,
112	struct llc_addr *laddr);
113	extern void llc_sap_add_socket(struct llc_sap sap, struct sock sk);
114	extern void llc_sap_remove_socket(struct llc_sap sap, struct sock sk);
115
116	extern u8 llc_data_accept_state(u8 state);
117	extern void llc_build_offset_table(void);
1da177e4	118	#endif /* LLC_CONN_H */