patch-2.1.15 linux/include/net/llc.h

• Lines: 147
• Date: Thu Dec 12 16:54:21 1996
• Orig file: v2.1.14/linux/include/net/llc.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v2.1.14/linux/include/net/llc.h linux/include/net/llc.h
@@ -0,0 +1,146 @@
+#include <linux/skbuff.h>
+
+#define LLC_MODULE
+
+typedef struct llc_struct llc;
+typedef struct llc_struct *llcptr;
+
+/*
+ *	LLC operations object.
+ */
+ 
+typedef struct
+{
+	void (* data_indication_ep) (llcptr llc, struct sk_buff *skb);
+	/* unit data returns 0 to keep the data 1 to free it */
+	int (* unit_data_indication_ep) (llcptr llc, int ll, char *xid_data);       
+	void (* connect_indication_ep) (llcptr llc);
+	void (* connect_confirm_ep) (llcptr llc);
+	void (* data_connect_indication_ep) (llcptr llc);
+	void (* data_connect_confirm_ep) (llcptr llc);
+	void (* disconnect_indication_ep) (llcptr llc);
+	void (* disconnect_confirm_ep) (llcptr llc);
+	void (* reset_confirm_ep) (llcptr llc, char lr);
+	void (* reset_indication_ep) (llcptr llc, char lr);
+#define LOCAL		0
+#define REMOTE		1
+	void (* xid_indication_ep) (llcptr llc, int ll, char *xid_data);
+	void (* test_indication_ep) (llcptr llc, int ll, char *test_data);
+	void (* report_status_ep) (llcptr llc, char status);
+#define FRMR_RECEIVED	0
+#define FRMR_SENT	1
+#define REMOTE_BUSY	2
+#define REMOTE_NOT_BUSY	3
+} llc_ops;
+
+/*
+ *	LLC private data area structure.
+ */
+
+struct llc_struct
+{ 
+	char eye[4];			/* To recognize llc area in dump */
+	int retry_count;		/* LLC link state variables */
+	unsigned char s_flag;
+	unsigned char p_flag;
+	unsigned char f_flag;
+	unsigned char data_flag;
+	unsigned char cause_flag;
+	unsigned char vs;		/* Send state variable */
+	unsigned char vr;		/* Receive state variable */
+	unsigned char remote_busy;
+	unsigned char state;		/* Current state of type2 llc procedure */
+	int n1;				/* Maximum number of bytes in I pdu 7.8.2 */
+	int n2;				/* Naximum number of retransmissions 7.8.2 */
+	unsigned char k;		/* Transmit window size 7.8.4, tw in IBM doc*/ 
+	unsigned char rw;		/* Receive window size */
+	struct 
+	{     				
+		/*
+		 *	FRMR_RSP info field structure: 5.4.2.3.5 p55
+		 */
+
+		unsigned char cntl1;
+		unsigned char cntl2;
+		unsigned char vs;
+		unsigned char vr_cr;
+		unsigned char xxyz;
+	} frmr_info_fld;
+
+	/*
+	 *	Timers in 7.8.1 page 78 
+	 */
+
+#define P_TIMER         0
+#define REJ_TIMER       1
+#define ACK_TIMER       2 
+#define BUSY_TIMER      3
+	unsigned long timer_expire_time[4];	
+	unsigned char timer_state[4];	/* The state of each timer */
+#define TIMER_IDLE      0
+#define TIMER_RUNNING   1
+#define TIMER_EXPIRED   2
+	unsigned long timer_interval[4]; 
+	struct timer_list tl[4];
+
+	/* 
+	 *	Client entry points, called by the LLC 
+	 */
+	 
+	llc_ops *ops;
+	
+	/*
+	 *	Mux and Demux variables
+	 */
+	 
+	char * client_data;		/* Pointer to clients context */
+	unsigned char local_sap;
+	unsigned char remote_sap ;
+	char remote_mac[MAX_ADDR_LEN];  /* MAC address of remote session partner */
+	int  remote_mac_len;		/* Actual length of mac address */
+	int  mac_offset;		/* Source mac offset in skb */ 
+	struct device *dev;		/* Device we are attached to */
+		     
+	unsigned char llc_mode;		/* See doc 7.1 on p70 */
+#define MODE_ADM 1
+#define MODE_ABM 2
+
+	struct sk_buff *rtq_front;	/* oldest skb in the re-transmit queue */
+	struct sk_buff *rtq_back;
+
+	struct sk_buff *atq_front;	/* oldest skb in the await-transmit queue */
+	struct sk_buff *atq_back; 
+      
+	unsigned char xid_count;
+	char * nextllc;			/* ptr to next llc struct in proto chain */
+};
+
+#define ADD_TO_RTQ(skb) llc_add_to_queue(skb, &lp->rtq_front, &lp->rtq_back) 
+#define ADD_TO_ATQ(skb) llc_add_to_queue(skb, &lp->atq_front, &lp->atq_back) 
+
+void 		llc_cancel_timers(llcptr lp);
+int		llc_decode_frametype(frameptr fr);
+llcptr 		llc_find(void);
+int		llc_free_acknowledged_skbs(llcptr lp, unsigned char ack);
+void		llc_handle_xid_indication( char *chsp, short int ll, char *xid_data);
+void		llc_interpret_pseudo_code(llcptr lp, int pc_label, struct sk_buff *skb, char type);
+void		llc_add_to_queue(struct sk_buff *skb, struct sk_buff **f, struct sk_buff **b);
+void		llc_process_otype2_frame(llcptr lp, struct sk_buff *skb, char type);
+struct sk_buff *llc_pull_from_atq(llcptr lp); 
+int 		llc_resend_ipdu(llcptr lp, unsigned char ack_nr, unsigned char type, char p);
+void 		llc_sendpdu(llcptr lp, char type, char pf, int data_len, char *pdu_data);
+void 		llc_sendipdu(llcptr lp, char type, char pf, struct sk_buff *skb);
+void		llc_start_timer(llcptr lp, int t);
+void		llc_stop_timer(llcptr lp, int t);
+void		llc_timer_expired(llcptr lp, int t);
+int		llc_validate_seq_nos(llcptr lp, frameptr fr);
+
+int		llc_data_request(llcptr lp, struct sk_buff *skb);
+void		llc_unit_data_request(llcptr lp, int ll, char * data);
+void		llc_disconnect_request(llcptr lp);
+void		llc_connect_request(llcptr lp);
+void		llc_xid_request(llcptr lp, char opt, int data_len, char *pdu_data);
+void		llc_test_request(llcptr lp, int data_len, char *pdu_data);
+
+int		register_cl2llc_client(llcptr llc, const char *device, llc_ops *ops, u8 *rmac, u8 ssap, u8 dsap);
+void		unregister_cl2llc_client(llcptr lp);