| /* |
| * 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> |
| #include <net/sock.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_DENY_ACCPT_APPRV 0x01 /* Default value */ |
| #define X25_ALLOW_ACCPT_APPRV 0x00 /* Control enabled */ |
| |
| #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 /* also fast select */ |
| #define X25_FAC_THROUGHPUT 0x02 |
| #define X25_FAC_PACKET_SIZE 0x42 |
| #define X25_FAC_WINDOW_SIZE 0x43 |
| |
| #define X25_MAX_FAC_LEN 60 |
| #define X25_MAX_CUD_LEN 128 |
| |
| #define X25_FAC_CALLING_AE 0xCB |
| #define X25_FAC_CALLED_AE 0xC9 |
| |
| #define X25_MARKER 0x00 |
| #define X25_DTE_SERVICES 0x0F |
| #define X25_MAX_AE_LEN 40 /* Max num of semi-octets in AE - OSI Nw */ |
| #define X25_MAX_DTE_FACIL_LEN 21 /* Max length of DTE facility params */ |
| |
| /** |
| * struct x25_route - x25 routing entry |
| * @node - entry in x25_list_lock |
| * @address - Start of address range |
| * @sigdigits - Number of sig digits |
| * @dev - More than one for MLP |
| * @refcnt - reference counter |
| */ |
| struct x25_route { |
| struct list_head node; |
| struct x25_address address; |
| unsigned int sigdigits; |
| struct net_device *dev; |
| atomic_t refcnt; |
| }; |
| |
| struct x25_neigh { |
| struct list_head node; |
| 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; |
| atomic_t refcnt; |
| }; |
| |
| struct x25_sock { |
| struct sock sk; |
| struct x25_address source_addr, dest_addr; |
| struct x25_neigh *neighbour; |
| unsigned int lci, cudmatchlength; |
| unsigned char state, condition, qbitincl, intflag, accptapprv; |
| 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 timer_list timer; |
| struct x25_causediag causediag; |
| struct x25_facilities facilities; |
| struct x25_dte_facilities dte_facilities; |
| struct x25_calluserdata calluserdata; |
| unsigned long vc_facil_mask; /* inc_call facilities mask */ |
| }; |
| |
| struct x25_forward { |
| struct list_head node; |
| unsigned int lci; |
| struct net_device *dev1; |
| struct net_device *dev2; |
| atomic_t refcnt; |
| }; |
| |
| static inline struct x25_sock *x25_sk(const struct sock *sk) |
| { |
| return (struct x25_sock *)sk; |
| } |
| |
| /* 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 *, struct x25_address *, |
| struct x25_address *); |
| extern int x25_addr_aton(unsigned char *, struct x25_address *, |
| struct x25_address *); |
| 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 *, struct net_device *); |
| 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 *, |
| struct x25_dte_facilities *, unsigned long *); |
| extern int x25_create_facilities(unsigned char *, struct x25_facilities *, |
| struct x25_dte_facilities *, unsigned long); |
| extern int x25_negotiate_facilities(struct sk_buff *, struct sock *, |
| struct x25_facilities *, |
| struct x25_dte_facilities *); |
| extern void x25_limit_facilities(struct x25_facilities *, struct x25_neigh *); |
| |
| /* x25_forward.c */ |
| extern void x25_clear_forward_by_lci(unsigned int lci); |
| extern void x25_clear_forward_by_dev(struct net_device *); |
| extern int x25_forward_data(int, struct x25_neigh *, struct sk_buff *); |
| extern int x25_forward_call(struct x25_address *, struct x25_neigh *, |
| struct sk_buff *, int); |
| |
| /* 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_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 __user *); |
| extern struct x25_neigh *x25_get_neigh(struct net_device *); |
| extern void x25_link_free(void); |
| |
| /* x25_neigh.c */ |
| static __inline__ void x25_neigh_hold(struct x25_neigh *nb) |
| { |
| atomic_inc(&nb->refcnt); |
| } |
| |
| static __inline__ void x25_neigh_put(struct x25_neigh *nb) |
| { |
| if (atomic_dec_and_test(&nb->refcnt)) |
| kfree(nb); |
| } |
| |
| /* 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 x25_route *x25_get_route(struct x25_address *addr); |
| extern struct net_device *x25_dev_get(char *); |
| extern void x25_route_device_down(struct net_device *dev); |
| extern int x25_route_ioctl(unsigned int, void __user *); |
| extern void x25_route_free(void); |
| |
| static __inline__ void x25_route_hold(struct x25_route *rt) |
| { |
| atomic_inc(&rt->refcnt); |
| } |
| |
| static __inline__ void x25_route_put(struct x25_route *rt) |
| { |
| if (atomic_dec_and_test(&rt->refcnt)) |
| kfree(rt); |
| } |
| |
| /* 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_init_timers(struct sock *sk); |
| 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)) |
| |
| extern struct hlist_head x25_list; |
| extern rwlock_t x25_list_lock; |
| extern struct list_head x25_route_list; |
| extern rwlock_t x25_route_list_lock; |
| extern struct list_head x25_forward_list; |
| extern rwlock_t x25_forward_list_lock; |
| |
| extern int x25_proc_init(void); |
| extern void x25_proc_exit(void); |
| #endif |