#include #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 );