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linux/include/net/rose.h
Eric Dumazet 2df91e397d net: rose: add netdev ref tracker to 'struct rose_sock' 
This will help debugging netdevice refcount problems with
CONFIG_NET_DEV_REFCNT_TRACKER=y

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tested-by: Bernard Pidoux <f6bvp@free.fr>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-08-01 11:59:23 -07:00

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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Declarations of Rose type objects.
*
* Jonathan Naylor G4KLX 25/8/96
*/
#ifndef _ROSE_H
#define _ROSE_H
#include <linux/rose.h>
#include <net/ax25.h>
#include <net/sock.h>
#define ROSE_ADDR_LEN 5
#define ROSE_MIN_LEN 3
#define ROSE_CALL_REQ_ADDR_LEN_OFF 3
#define ROSE_CALL_REQ_ADDR_LEN_VAL 0xAA /* each address is 10 digits */
#define ROSE_CALL_REQ_DEST_ADDR_OFF 4
#define ROSE_CALL_REQ_SRC_ADDR_OFF 9
#define ROSE_CALL_REQ_FACILITIES_OFF 14
#define ROSE_GFI 0x10
#define ROSE_Q_BIT 0x80
#define ROSE_D_BIT 0x40
#define ROSE_M_BIT 0x10
#define ROSE_CALL_REQUEST 0x0B
#define ROSE_CALL_ACCEPTED 0x0F
#define ROSE_CLEAR_REQUEST 0x13
#define ROSE_CLEAR_CONFIRMATION 0x17
#define ROSE_DATA 0x00
#define ROSE_INTERRUPT 0x23
#define ROSE_INTERRUPT_CONFIRMATION 0x27
#define ROSE_RR 0x01
#define ROSE_RNR 0x05
#define ROSE_REJ 0x09
#define ROSE_RESET_REQUEST 0x1B
#define ROSE_RESET_CONFIRMATION 0x1F
#define ROSE_REGISTRATION_REQUEST 0xF3
#define ROSE_REGISTRATION_CONFIRMATION 0xF7
#define ROSE_RESTART_REQUEST 0xFB
#define ROSE_RESTART_CONFIRMATION 0xFF
#define ROSE_DIAGNOSTIC 0xF1
#define ROSE_ILLEGAL 0xFD
/* Define Link State constants. */
enum {
ROSE_STATE_0, /* Ready */
ROSE_STATE_1, /* Awaiting Call Accepted */
ROSE_STATE_2, /* Awaiting Clear Confirmation */
ROSE_STATE_3, /* Data Transfer */
ROSE_STATE_4, /* Awaiting Reset Confirmation */
ROSE_STATE_5 /* Deferred Call Acceptance */
};
#define ROSE_DEFAULT_T0 180000 /* Default T10 T20 value */
#define ROSE_DEFAULT_T1 200000 /* Default T11 T21 value */
#define ROSE_DEFAULT_T2 180000 /* Default T12 T22 value */
#define ROSE_DEFAULT_T3 180000 /* Default T13 T23 value */
#define ROSE_DEFAULT_HB 5000 /* Default Holdback value */
#define ROSE_DEFAULT_IDLE 0 /* No Activity Timeout - none */
#define ROSE_DEFAULT_ROUTING 1 /* Default routing flag */
#define ROSE_DEFAULT_FAIL_TIMEOUT 120000 /* Time until link considered usable */
#define ROSE_DEFAULT_MAXVC 50 /* Maximum number of VCs per neighbour */
#define ROSE_DEFAULT_WINDOW_SIZE 7 /* Default window size */
#define ROSE_MODULUS 8
#define ROSE_MAX_PACKET_SIZE 251 /* Maximum packet size */
#define ROSE_COND_ACK_PENDING 0x01
#define ROSE_COND_PEER_RX_BUSY 0x02
#define ROSE_COND_OWN_RX_BUSY 0x04
#define FAC_NATIONAL 0x00
#define FAC_CCITT 0x0F
#define FAC_NATIONAL_RAND 0x7F
#define FAC_NATIONAL_FLAGS 0x3F
#define FAC_NATIONAL_DEST_DIGI 0xE9
#define FAC_NATIONAL_SRC_DIGI 0xEB
#define FAC_NATIONAL_FAIL_CALL 0xED
#define FAC_NATIONAL_FAIL_ADD 0xEE
#define FAC_NATIONAL_DIGIS 0xEF
#define FAC_CCITT_DEST_NSAP 0xC9
#define FAC_CCITT_SRC_NSAP 0xCB
struct rose_neigh {
struct rose_neigh *next;
ax25_address callsign;
ax25_digi *digipeat;
ax25_cb *ax25;
struct net_device *dev;
unsigned short count;
unsigned short use;
unsigned int number;
char restarted;
char dce_mode;
char loopback;
struct sk_buff_head queue;
struct timer_list t0timer;
struct timer_list ftimer;
};
struct rose_node {
struct rose_node *next;
rose_address address;
unsigned short mask;
unsigned char count;
char loopback;
struct rose_neigh *neighbour[3];
};
struct rose_route {
struct rose_route *next;
unsigned int lci1, lci2;
rose_address src_addr, dest_addr;
ax25_address src_call, dest_call;
struct rose_neigh *neigh1, *neigh2;
unsigned int rand;
};
struct rose_sock {
struct sock sock;
rose_address source_addr, dest_addr;
ax25_address source_call, dest_call;
unsigned char source_ndigis, dest_ndigis;
ax25_address source_digis[ROSE_MAX_DIGIS];
ax25_address dest_digis[ROSE_MAX_DIGIS];
struct rose_neigh *neighbour;
struct net_device *device;
netdevice_tracker dev_tracker;
unsigned int lci, rand;
unsigned char state, condition, qbitincl, defer;
unsigned char cause, diagnostic;
unsigned short vs, vr, va, vl;
unsigned long t1, t2, t3, hb, idle;
#ifdef M_BIT
unsigned short fraglen;
struct sk_buff_head frag_queue;
#endif
struct sk_buff_head ack_queue;
struct rose_facilities_struct facilities;
struct timer_list timer;
struct timer_list idletimer;
};
#define rose_sk(sk) ((struct rose_sock *)(sk))
/* af_rose.c */
extern ax25_address rose_callsign;
extern int sysctl_rose_restart_request_timeout;
extern int sysctl_rose_call_request_timeout;
extern int sysctl_rose_reset_request_timeout;
extern int sysctl_rose_clear_request_timeout;
extern int sysctl_rose_no_activity_timeout;
extern int sysctl_rose_ack_hold_back_timeout;
extern int sysctl_rose_routing_control;
extern int sysctl_rose_link_fail_timeout;
extern int sysctl_rose_maximum_vcs;
extern int sysctl_rose_window_size;
int rosecmp(const rose_address *, const rose_address *);
int rosecmpm(const rose_address *, const rose_address *, unsigned short);
char *rose2asc(char *buf, const rose_address *);
struct sock *rose_find_socket(unsigned int, struct rose_neigh *);
void rose_kill_by_neigh(struct rose_neigh *);
unsigned int rose_new_lci(struct rose_neigh *);
int rose_rx_call_request(struct sk_buff *, struct net_device *,
struct rose_neigh *, unsigned int);
void rose_destroy_socket(struct sock *);
/* rose_dev.c */
void rose_setup(struct net_device *);
/* rose_in.c */
int rose_process_rx_frame(struct sock *, struct sk_buff *);
/* rose_link.c */
void rose_start_ftimer(struct rose_neigh *);
void rose_stop_ftimer(struct rose_neigh *);
void rose_stop_t0timer(struct rose_neigh *);
int rose_ftimer_running(struct rose_neigh *);
void rose_link_rx_restart(struct sk_buff *, struct rose_neigh *,
unsigned short);
void rose_transmit_clear_request(struct rose_neigh *, unsigned int,
unsigned char, unsigned char);
void rose_transmit_link(struct sk_buff *, struct rose_neigh *);
/* rose_loopback.c */
void rose_loopback_init(void);
void rose_loopback_clear(void);
int rose_loopback_queue(struct sk_buff *, struct rose_neigh *);
/* rose_out.c */
void rose_kick(struct sock *);
void rose_enquiry_response(struct sock *);
/* rose_route.c */
extern struct rose_neigh *rose_loopback_neigh;
extern const struct seq_operations rose_neigh_seqops;
extern const struct seq_operations rose_node_seqops;
extern struct seq_operations rose_route_seqops;
void rose_add_loopback_neigh(void);
int __must_check rose_add_loopback_node(const rose_address *);
void rose_del_loopback_node(const rose_address *);
void rose_rt_device_down(struct net_device *);
void rose_link_device_down(struct net_device *);
struct net_device *rose_dev_first(void);
struct net_device *rose_dev_get(rose_address *);
struct rose_route *rose_route_free_lci(unsigned int, struct rose_neigh *);
struct rose_neigh *rose_get_neigh(rose_address *, unsigned char *,
unsigned char *, int);
int rose_rt_ioctl(unsigned int, void __user *);
void rose_link_failed(ax25_cb *, int);
int rose_route_frame(struct sk_buff *, ax25_cb *);
void rose_rt_free(void);
/* rose_subr.c */
void rose_clear_queues(struct sock *);
void rose_frames_acked(struct sock *, unsigned short);
void rose_requeue_frames(struct sock *);
int rose_validate_nr(struct sock *, unsigned short);
void rose_write_internal(struct sock *, int);
int rose_decode(struct sk_buff *, int *, int *, int *, int *, int *);
int rose_parse_facilities(unsigned char *, unsigned int,
struct rose_facilities_struct *);
void rose_disconnect(struct sock *, int, int, int);
/* rose_timer.c */
void rose_start_heartbeat(struct sock *);
void rose_start_t1timer(struct sock *);
void rose_start_t2timer(struct sock *);
void rose_start_t3timer(struct sock *);
void rose_start_hbtimer(struct sock *);
void rose_start_idletimer(struct sock *);
void rose_stop_heartbeat(struct sock *);
void rose_stop_timer(struct sock *);
void rose_stop_idletimer(struct sock *);
/* sysctl_net_rose.c */
void rose_register_sysctl(void);
void rose_unregister_sysctl(void);
#endif
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