Import of Linux/MIPS 2.1.36

1 files changed, 208 insertions, 0 deletions

diff --git a/include/net/x25.h b/include/net/x25.h
new file mode 100644
index 000000000..c98afb6de
--- /dev/null
+++ b/include/net/x25.h
@@ -0,0 +1,208 @@
+/*
+ *	Declarations of X.25 Packet Layer type objects.
+ *
+ *	Jonathan Naylor		17/11/96
+ */
+
+#ifndef _X25_H
+#define _X25_H 
+#include <linux/x25.h>
+
+#define	X25_SLOWHZ			1	/* Run timing at 1 Hz */
+
+#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 * X25_SLOWHZ)	/* Default T20 value */
+#define X25_DEFAULT_T21		(200 * X25_SLOWHZ)	/* Default T21 value */
+#define X25_DEFAULT_T22		(180 * X25_SLOWHZ)	/* Default T22 value */
+#define	X25_DEFAULT_T23		(180 * X25_SLOWHZ)	/* Default T23 value */
+#define	X25_DEFAULT_T2		(3   * X25_SLOWHZ)	/* 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 device		*dev;		/* More than one for MLP */
+};
+
+struct x25_neigh {
+	struct x25_neigh	*next;
+	struct device		*dev;
+	unsigned int		state;
+	unsigned int		extended;
+	struct sk_buff_head	queue;
+	unsigned short		t20, t20timer;
+	struct timer_list	timer;
+};
+
+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 short		timer;
+	unsigned short		t2, t21, t22, t23;
+	unsigned short		fraglen;
+	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 x25_facilities	facilities;
+	struct x25_calluserdata	calluserdata;
+} 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(void);
+extern struct sock *x25_find_socket(unsigned int);
+extern void x25_destroy_socket(struct sock *);
+extern int  x25_rx_call_request(struct sk_buff *, struct x25_neigh *, unsigned int);
+
+#include <net/x25call.h>
+
+/* x25_dev.c */
+extern void x25_send_frame(struct sk_buff *, struct x25_neigh *);
+extern int  x25_lapb_receive_frame(struct sk_buff *, struct device *, struct packet_type *);
+extern int  x25_llc_receive_frame(struct sk_buff *, struct device *, struct packet_type *);
+extern void x25_establish_link(struct x25_neigh *);
+extern void x25_terminate_link(struct x25_neigh *);
+
+/* x25_in.c */
+extern int  x25_process_rx_frame(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 device *);
+extern void x25_link_device_down(struct 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 device *);
+extern int  x25_link_get_info(char *, char **, off_t, int, int);
+extern void x25_link_free(void);
+
+/* x25_out.c */
+extern void x25_output(struct sock *, struct sk_buff *);
+extern void x25_kick(struct sock *);
+extern void x25_enquiry_response(struct sock *);
+extern void x25_check_iframes_acked(struct sock *, unsigned short);
+
+/* x25_route.c */
+extern struct device *x25_get_route(x25_address *);
+extern struct device *x25_dev_get(char *);
+extern void x25_route_device_down(struct device *);
+extern int  x25_route_ioctl(unsigned int, void *);
+extern int  x25_routes_get_info(char *, char **, off_t, int, int);
+extern void x25_route_free(void);
+
+/* x25_subr.c */
+extern void x25_clear_queues(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 int  x25_parse_facilities(struct sk_buff *, struct x25_facilities *);
+extern int  x25_create_facilities(unsigned char *, struct x25_facilities *);
+
+/* x25_timer.c */
+extern void x25_set_timer(struct sock *);
+
+/* sysctl_net_x25.c */
+extern void x25_register_sysctl(void);
+extern void x25_unregister_sysctl(void);
+
+#endif