linux/drivers/scsi/fnic/fnic_trace.h

/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright 2012 Cisco Systems, Inc.  All rights reserved. */

#ifndef __FNIC_TRACE_H__
#define __FNIC_TRACE_H__

#define FNIC_ENTRY_SIZE_BYTES …
#define FC_TRC_SIZE_BYTES …
#define FC_TRC_HEADER_SIZE …

/*
 * Fisrt bit of FNIC_FC_RECV and FNIC_FC_SEND is used to represent the type
 * of frame 1 => Eth frame, 0=> FC frame
 */

#define FNIC_FC_RECV …
#define FNIC_FC_SEND …
#define FNIC_FC_LE …

extern ssize_t simple_read_from_buffer(void __user *to,
					  size_t count,
					  loff_t *ppos,
					  const void *from,
					  size_t available);

extern unsigned int fnic_trace_max_pages;
extern int fnic_tracing_enabled;
extern unsigned int trace_max_pages;

extern unsigned int fnic_fc_trace_max_pages;
extern int fnic_fc_tracing_enabled;
extern int fnic_fc_trace_cleared;

fnic_trace_dbg_t;

fnic_dbgfs_t;

struct fnic_trace_data { … } __attribute__((packed));

fnic_trace_data_t;

struct fc_trace_hdr { … } __attribute__((packed));

#define FC_TRACE_ADDRESS(a) …

#define FNIC_TRACE_ENTRY_SIZE …

#define FNIC_TRACE(_fn, _hn, _t, _a, _b, _c, _d, _e) …

fnic_trace_data_t *fnic_trace_get_buf(void);
int fnic_get_trace_data(fnic_dbgfs_t *);
int fnic_trace_buf_init(void);
void fnic_trace_free(void);
int fnic_debugfs_init(void);
void fnic_debugfs_terminate(void);
void fnic_trace_debugfs_init(void);
void fnic_trace_debugfs_terminate(void);

/* Fnic FC CTLR Trace releated function */
int fnic_fc_trace_init(void);
void fnic_fc_trace_free(void);
int fnic_fc_trace_set_data(u32 host_no, u8 frame_type,
				char *frame, u32 fc_frame_len);
int fnic_fc_trace_get_data(fnic_dbgfs_t *fnic_dbgfs_prt, u8 rdata_flag);
void copy_and_format_trace_data(struct fc_trace_hdr *tdata,
				fnic_dbgfs_t *fnic_dbgfs_prt,
				int *len, u8 rdata_flag);
void fnic_fc_trace_debugfs_init(void);
void fnic_fc_trace_debugfs_terminate(void);

#endif