Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 135 insertions, 0 deletions

diff --git a/pfinet/linux-src/include/net/llc.h b/pfinet/linux-src/include/net/llc.h
new file mode 100644
index 00000000..654a658d
--- /dev/null
+++ b/pfinet/linux-src/include/net/llc.h
@@ -0,0 +1,135 @@
+#include <linux/skbuff.h>
+
+#define LLC_MODULE
+
+typedef struct llc_struct llc;
+typedef struct llc_struct *llcptr;
+
+/*
+ *	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 name[9];		/* name of this llc instance */
+	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 point, called by the LLC.
+	 */
+	 
+	void	(*llc_event)(struct llc_struct *);
+	
+	/*
+	 *	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 */ 
+	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
+
+	int llc_callbacks;		/* Pending callbacks */
+#define LLC_CONN_INDICATION	1	/* We have to ensure the names don't */
+#define LLC_CONN_CONFIRM	2	/* mix up with the 802 state table */
+#define LLC_DATA_INDIC		4
+#define LLC_DISC_INDICATION	8
+#define LLC_RESET_INDIC_LOC	16
+#define LLC_RESET_INDIC_REM	32
+#define LLC_RST_CONFIRM		64
+#define LLC_FRMR_RECV		128
+#define LLC_FRMR_SENT		256
+#define LLC_REMOTE_BUSY		512
+#define LLC_REMOTE_NOTBUSY	1024
+#define LLC_TEST_INDICATION	2048
+#define LLC_XID_INDICATION	4096
+#define LLC_UI_DATA		8192
+
+	struct sk_buff *inc_skb;	/* Saved data buffer for indications */
+	
+	struct sk_buff_head rtq;	/* Retransmit queue */
+	struct sk_buff_head atq;	/* Await transit queue */
+      
+	unsigned char xid_count;
+
+	struct llc_struct *nextllc;	/* ptr to next llc struct in proto chain */
+};
+
+#define ADD_TO_RTQ(skb) skb_queue_tail(&lp->rtq,skb)
+#define ADD_TO_ATQ(skb) skb_queue_tail(&lp->atq,skb)
+
+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, void (*ops)(llcptr), u8 *rmac, u8 ssap, u8 dsap);
+void		unregister_cl2llc_client(llcptr lp);
+int 		llc_mac_data_indicate(llcptr lp, struct sk_buff *skb );
+