x25.h
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上传日期:2013-02-24
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文件大小:8k
- /*
- * Declarations of X.25 Packet Layer type objects.
- *
- * History
- * nov/17/96 Jonathan Naylor Initial version.
- * mar/20/00 Daniela Squassoni Disabling/enabling of facilities
- * negotiation.
- */
- #ifndef _X25_H
- #define _X25_H
- #include <linux/x25.h>
- #define X25_ADDR_LEN 16
- #define X25_MAX_L2_LEN 18 /* 802.2 LLC */
- #define X25_STD_MIN_LEN 3
- #define X25_EXT_MIN_LEN 4
- #define X25_GFI_SEQ_MASK 0x30
- #define X25_GFI_STDSEQ 0x10
- #define X25_GFI_EXTSEQ 0x20
- #define X25_Q_BIT 0x80
- #define X25_D_BIT 0x40
- #define X25_STD_M_BIT 0x10
- #define X25_EXT_M_BIT 0x01
- #define X25_CALL_REQUEST 0x0B
- #define X25_CALL_ACCEPTED 0x0F
- #define X25_CLEAR_REQUEST 0x13
- #define X25_CLEAR_CONFIRMATION 0x17
- #define X25_DATA 0x00
- #define X25_INTERRUPT 0x23
- #define X25_INTERRUPT_CONFIRMATION 0x27
- #define X25_RR 0x01
- #define X25_RNR 0x05
- #define X25_REJ 0x09
- #define X25_RESET_REQUEST 0x1B
- #define X25_RESET_CONFIRMATION 0x1F
- #define X25_REGISTRATION_REQUEST 0xF3
- #define X25_REGISTRATION_CONFIRMATION 0xF7
- #define X25_RESTART_REQUEST 0xFB
- #define X25_RESTART_CONFIRMATION 0xFF
- #define X25_DIAGNOSTIC 0xF1
- #define X25_ILLEGAL 0xFD
- /* Define the various conditions that may exist */
- #define X25_COND_ACK_PENDING 0x01
- #define X25_COND_OWN_RX_BUSY 0x02
- #define X25_COND_PEER_RX_BUSY 0x04
- /* Define Link State constants. */
- enum {
- X25_STATE_0, /* Ready */
- X25_STATE_1, /* Awaiting Call Accepted */
- X25_STATE_2, /* Awaiting Clear Confirmation */
- X25_STATE_3, /* Data Transfer */
- X25_STATE_4 /* Awaiting Reset Confirmation */
- };
- enum {
- X25_LINK_STATE_0,
- X25_LINK_STATE_1,
- X25_LINK_STATE_2,
- X25_LINK_STATE_3
- };
- #define X25_DEFAULT_T20 (180 * HZ) /* Default T20 value */
- #define X25_DEFAULT_T21 (200 * HZ) /* Default T21 value */
- #define X25_DEFAULT_T22 (180 * HZ) /* Default T22 value */
- #define X25_DEFAULT_T23 (180 * HZ) /* Default T23 value */
- #define X25_DEFAULT_T2 (3 * HZ) /* Default ack holdback value */
- #define X25_DEFAULT_WINDOW_SIZE 2 /* Default Window Size */
- #define X25_DEFAULT_PACKET_SIZE X25_PS128 /* Default Packet Size */
- #define X25_DEFAULT_THROUGHPUT 0x0A /* Deafult Throughput */
- #define X25_DEFAULT_REVERSE 0x00 /* Default Reverse Charging */
- #define X25_SMODULUS 8
- #define X25_EMODULUS 128
- /*
- * X.25 Facilities constants.
- */
- #define X25_FAC_CLASS_MASK 0xC0
- #define X25_FAC_CLASS_A 0x00
- #define X25_FAC_CLASS_B 0x40
- #define X25_FAC_CLASS_C 0x80
- #define X25_FAC_CLASS_D 0xC0
- #define X25_FAC_REVERSE 0x01
- #define X25_FAC_THROUGHPUT 0x02
- #define X25_FAC_PACKET_SIZE 0x42
- #define X25_FAC_WINDOW_SIZE 0x43
- #define X25_MAX_FAC_LEN 20 /* Plenty to spare */
- #define X25_MAX_CUD_LEN 128
- struct x25_route {
- struct x25_route *next;
- x25_address address; /* Start of address range */
- unsigned int sigdigits; /* Number of sig digits */
- struct net_device *dev; /* More than one for MLP */
- };
- struct x25_neigh {
- struct x25_neigh *next;
- struct net_device *dev;
- unsigned int state;
- unsigned int extended;
- struct sk_buff_head queue;
- unsigned long t20;
- struct timer_list t20timer;
- unsigned long global_facil_mask;
- };
- typedef struct {
- x25_address source_addr, dest_addr;
- struct x25_neigh *neighbour;
- unsigned int lci;
- unsigned char state, condition, qbitincl, intflag;
- unsigned short vs, vr, va, vl;
- unsigned long t2, t21, t22, t23;
- unsigned short fraglen;
- struct sk_buff_head ack_queue;
- struct sk_buff_head fragment_queue;
- struct sk_buff_head interrupt_in_queue;
- struct sk_buff_head interrupt_out_queue;
- struct sock *sk; /* Backlink to socket */
- struct timer_list timer;
- struct x25_causediag causediag;
- struct x25_facilities facilities;
- struct x25_calluserdata calluserdata;
- unsigned long vc_facil_mask; /* inc_call facilities mask */
- } x25_cb;
- /* af_x25.c */
- extern int sysctl_x25_restart_request_timeout;
- extern int sysctl_x25_call_request_timeout;
- extern int sysctl_x25_reset_request_timeout;
- extern int sysctl_x25_clear_request_timeout;
- extern int sysctl_x25_ack_holdback_timeout;
- extern int x25_addr_ntoa(unsigned char *, x25_address *, x25_address *);
- extern int x25_addr_aton(unsigned char *, x25_address *, x25_address *);
- extern unsigned int x25_new_lci(struct x25_neigh *);
- extern struct sock *x25_find_socket(unsigned int, struct x25_neigh *);
- extern void x25_destroy_socket(struct sock *);
- extern int x25_rx_call_request(struct sk_buff *, struct x25_neigh *, unsigned int);
- extern void x25_kill_by_neigh(struct x25_neigh *);
- /* x25_dev.c */
- extern void x25_send_frame(struct sk_buff *, struct x25_neigh *);
- extern int x25_lapb_receive_frame(struct sk_buff *, struct net_device *, struct packet_type *);
- extern int x25_llc_receive_frame(struct sk_buff *, struct net_device *, struct packet_type *);
- extern void x25_establish_link(struct x25_neigh *);
- extern void x25_terminate_link(struct x25_neigh *);
- /* x25_facilities.c */
- extern int x25_parse_facilities(struct sk_buff *, struct x25_facilities *, unsigned long *);
- extern int x25_create_facilities(unsigned char *, struct x25_facilities *, unsigned long);
- extern int x25_negotiate_facilities(struct sk_buff *, struct sock *, struct x25_facilities *);
- extern void x25_limit_facilities(struct x25_facilities *, struct x25_neigh *);
- /* x25_in.c */
- extern int x25_process_rx_frame(struct sock *, struct sk_buff *);
- extern int x25_backlog_rcv(struct sock *, struct sk_buff *);
- /* x25_link.c */
- extern void x25_link_control(struct sk_buff *, struct x25_neigh *, unsigned short);
- extern void x25_link_device_up(struct net_device *);
- extern void x25_link_device_down(struct net_device *);
- extern void x25_link_established(struct x25_neigh *);
- extern void x25_link_terminated(struct x25_neigh *);
- extern void x25_transmit_restart_request(struct x25_neigh *);
- extern void x25_transmit_restart_confirmation(struct x25_neigh *);
- extern void x25_transmit_diagnostic(struct x25_neigh *, unsigned char);
- extern void x25_transmit_clear_request(struct x25_neigh *, unsigned int, unsigned char);
- extern void x25_transmit_link(struct sk_buff *, struct x25_neigh *);
- extern int x25_subscr_ioctl(unsigned int, void *);
- extern struct x25_neigh *x25_get_neigh(struct net_device *);
- extern void x25_link_free(void);
- /* x25_out.c */
- extern int x25_output(struct sock *, struct sk_buff *);
- extern void x25_kick(struct sock *);
- extern void x25_enquiry_response(struct sock *);
- /* x25_route.c */
- extern struct net_device *x25_get_route(x25_address *);
- extern struct net_device *x25_dev_get(char *);
- extern void x25_route_device_down(struct net_device *);
- extern int x25_route_ioctl(unsigned int, void *);
- extern int x25_routes_get_info(char *, char **, off_t, int);
- extern void x25_route_free(void);
- /* x25_subr.c */
- extern void x25_clear_queues(struct sock *);
- extern void x25_frames_acked(struct sock *, unsigned short);
- extern void x25_requeue_frames(struct sock *);
- extern int x25_validate_nr(struct sock *, unsigned short);
- extern void x25_write_internal(struct sock *, int);
- extern int x25_decode(struct sock *, struct sk_buff *, int *, int *, int *, int *, int *);
- extern void x25_disconnect(struct sock *, int, unsigned char, unsigned char);
- /* x25_timer.c */
- extern void x25_start_heartbeat(struct sock *);
- extern void x25_start_t2timer(struct sock *);
- extern void x25_start_t21timer(struct sock *);
- extern void x25_start_t22timer(struct sock *);
- extern void x25_start_t23timer(struct sock *);
- extern void x25_stop_heartbeat(struct sock *);
- extern void x25_stop_timer(struct sock *);
- extern unsigned long x25_display_timer(struct sock *);
- extern void x25_check_rbuf(struct sock *);
- /* sysctl_net_x25.c */
- extern void x25_register_sysctl(void);
- extern void x25_unregister_sysctl(void);
- struct x25_skb_cb {
- unsigned flags;
- };
- #define X25_SKB_CB(s) ((struct x25_skb_cb *) ((s)->cb))
- #endif