mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-12 23:33:55 +08:00
a508da6cc0
Enable dynamic debugging and remove a bunch of #ifdef/#endifs. Add a lapb_dbg(level, fmt, ...) macro and replace the printk(KERN_DEBUG uses. Add pr_fmt and remove embedded prefixes. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
159 lines
4.9 KiB
C
159 lines
4.9 KiB
C
#ifndef _LAPB_H
|
|
#define _LAPB_H
|
|
#include <linux/lapb.h>
|
|
|
|
#define LAPB_HEADER_LEN 20 /* LAPB over Ethernet + a bit more */
|
|
|
|
#define LAPB_ACK_PENDING_CONDITION 0x01
|
|
#define LAPB_REJECT_CONDITION 0x02
|
|
#define LAPB_PEER_RX_BUSY_CONDITION 0x04
|
|
|
|
/* Control field templates */
|
|
#define LAPB_I 0x00 /* Information frames */
|
|
#define LAPB_S 0x01 /* Supervisory frames */
|
|
#define LAPB_U 0x03 /* Unnumbered frames */
|
|
|
|
#define LAPB_RR 0x01 /* Receiver ready */
|
|
#define LAPB_RNR 0x05 /* Receiver not ready */
|
|
#define LAPB_REJ 0x09 /* Reject */
|
|
|
|
#define LAPB_SABM 0x2F /* Set Asynchronous Balanced Mode */
|
|
#define LAPB_SABME 0x6F /* Set Asynchronous Balanced Mode Extended */
|
|
#define LAPB_DISC 0x43 /* Disconnect */
|
|
#define LAPB_DM 0x0F /* Disconnected mode */
|
|
#define LAPB_UA 0x63 /* Unnumbered acknowledge */
|
|
#define LAPB_FRMR 0x87 /* Frame reject */
|
|
|
|
#define LAPB_ILLEGAL 0x100 /* Impossible to be a real frame type */
|
|
|
|
#define LAPB_SPF 0x10 /* Poll/final bit for standard LAPB */
|
|
#define LAPB_EPF 0x01 /* Poll/final bit for extended LAPB */
|
|
|
|
#define LAPB_FRMR_W 0x01 /* Control field invalid */
|
|
#define LAPB_FRMR_X 0x02 /* I field invalid */
|
|
#define LAPB_FRMR_Y 0x04 /* I field too long */
|
|
#define LAPB_FRMR_Z 0x08 /* Invalid N(R) */
|
|
|
|
#define LAPB_POLLOFF 0
|
|
#define LAPB_POLLON 1
|
|
|
|
/* LAPB C-bit */
|
|
#define LAPB_COMMAND 1
|
|
#define LAPB_RESPONSE 2
|
|
|
|
#define LAPB_ADDR_A 0x03
|
|
#define LAPB_ADDR_B 0x01
|
|
#define LAPB_ADDR_C 0x0F
|
|
#define LAPB_ADDR_D 0x07
|
|
|
|
/* Define Link State constants. */
|
|
enum {
|
|
LAPB_STATE_0, /* Disconnected State */
|
|
LAPB_STATE_1, /* Awaiting Connection State */
|
|
LAPB_STATE_2, /* Awaiting Disconnection State */
|
|
LAPB_STATE_3, /* Data Transfer State */
|
|
LAPB_STATE_4 /* Frame Reject State */
|
|
};
|
|
|
|
#define LAPB_DEFAULT_MODE (LAPB_STANDARD | LAPB_SLP | LAPB_DTE)
|
|
#define LAPB_DEFAULT_WINDOW 7 /* Window=7 */
|
|
#define LAPB_DEFAULT_T1 (5 * HZ) /* T1=5s */
|
|
#define LAPB_DEFAULT_T2 (1 * HZ) /* T2=1s */
|
|
#define LAPB_DEFAULT_N2 20 /* N2=20 */
|
|
|
|
#define LAPB_SMODULUS 8
|
|
#define LAPB_EMODULUS 128
|
|
|
|
/*
|
|
* Information about the current frame.
|
|
*/
|
|
struct lapb_frame {
|
|
unsigned short type; /* Parsed type */
|
|
unsigned short nr, ns; /* N(R), N(S) */
|
|
unsigned char cr; /* Command/Response */
|
|
unsigned char pf; /* Poll/Final */
|
|
unsigned char control[2]; /* Original control data*/
|
|
};
|
|
|
|
/*
|
|
* The per LAPB connection control structure.
|
|
*/
|
|
struct lapb_cb {
|
|
struct list_head node;
|
|
struct net_device *dev;
|
|
|
|
/* Link status fields */
|
|
unsigned int mode;
|
|
unsigned char state;
|
|
unsigned short vs, vr, va;
|
|
unsigned char condition;
|
|
unsigned short n2, n2count;
|
|
unsigned short t1, t2;
|
|
struct timer_list t1timer, t2timer;
|
|
|
|
/* Internal control information */
|
|
struct sk_buff_head write_queue;
|
|
struct sk_buff_head ack_queue;
|
|
unsigned char window;
|
|
const struct lapb_register_struct *callbacks;
|
|
|
|
/* FRMR control information */
|
|
struct lapb_frame frmr_data;
|
|
unsigned char frmr_type;
|
|
|
|
atomic_t refcnt;
|
|
};
|
|
|
|
/* lapb_iface.c */
|
|
extern void lapb_connect_confirmation(struct lapb_cb *lapb, int);
|
|
extern void lapb_connect_indication(struct lapb_cb *lapb, int);
|
|
extern void lapb_disconnect_confirmation(struct lapb_cb *lapb, int);
|
|
extern void lapb_disconnect_indication(struct lapb_cb *lapb, int);
|
|
extern int lapb_data_indication(struct lapb_cb *lapb, struct sk_buff *);
|
|
extern int lapb_data_transmit(struct lapb_cb *lapb, struct sk_buff *);
|
|
|
|
/* lapb_in.c */
|
|
extern void lapb_data_input(struct lapb_cb *lapb, struct sk_buff *);
|
|
|
|
/* lapb_out.c */
|
|
extern void lapb_kick(struct lapb_cb *lapb);
|
|
extern void lapb_transmit_buffer(struct lapb_cb *lapb, struct sk_buff *, int);
|
|
extern void lapb_establish_data_link(struct lapb_cb *lapb);
|
|
extern void lapb_enquiry_response(struct lapb_cb *lapb);
|
|
extern void lapb_timeout_response(struct lapb_cb *lapb);
|
|
extern void lapb_check_iframes_acked(struct lapb_cb *lapb, unsigned short);
|
|
extern void lapb_check_need_response(struct lapb_cb *lapb, int, int);
|
|
|
|
/* lapb_subr.c */
|
|
extern void lapb_clear_queues(struct lapb_cb *lapb);
|
|
extern void lapb_frames_acked(struct lapb_cb *lapb, unsigned short);
|
|
extern void lapb_requeue_frames(struct lapb_cb *lapb);
|
|
extern int lapb_validate_nr(struct lapb_cb *lapb, unsigned short);
|
|
extern int lapb_decode(struct lapb_cb *lapb, struct sk_buff *, struct lapb_frame *);
|
|
extern void lapb_send_control(struct lapb_cb *lapb, int, int, int);
|
|
extern void lapb_transmit_frmr(struct lapb_cb *lapb);
|
|
|
|
/* lapb_timer.c */
|
|
extern void lapb_start_t1timer(struct lapb_cb *lapb);
|
|
extern void lapb_start_t2timer(struct lapb_cb *lapb);
|
|
extern void lapb_stop_t1timer(struct lapb_cb *lapb);
|
|
extern void lapb_stop_t2timer(struct lapb_cb *lapb);
|
|
extern int lapb_t1timer_running(struct lapb_cb *lapb);
|
|
|
|
/*
|
|
* Debug levels.
|
|
* 0 = Off
|
|
* 1 = State Changes
|
|
* 2 = Packets I/O and State Changes
|
|
* 3 = Hex dumps, Packets I/O and State Changes.
|
|
*/
|
|
#define LAPB_DEBUG 0
|
|
|
|
#define lapb_dbg(level, fmt, ...) \
|
|
do { \
|
|
if (level < LAPB_DEBUG) \
|
|
pr_debug(fmt, ##__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#endif
|