/*
* fnic_trace_debugfs_open - Open the fnic trace log
* @inode: The inode pointer
* @file: The file pointer to attach the log output
*
* Description:
* This routine is the entry point for the debugfs open file operation.
* It allocates the necessary buffer for the log, fills the buffer from
* the in-memory log and then returns a pointer to that log in
* the private_data field in @file.
*
* Returns:
* This function returns zero if successful. On error it will return
* a negative error value.
*/
static int fnic_trace_debugfs_open(struct inode *inode,
struct file *file)
{
fnic_dbgfs_t *fnic_dbg_prt;
fnic_dbg_prt = kzalloc(sizeof(fnic_dbgfs_t), GFP_KERNEL);
if (!fnic_dbg_prt)
return -ENOMEM;
fnic_dbg_prt->buffer = vmalloc((3*(trace_max_pages * PAGE_SIZE)));
if (!fnic_dbg_prt->buffer)
return -ENOMEM;
memset((void *)fnic_dbg_prt->buffer, 0,
(3*(trace_max_pages * PAGE_SIZE)));
fnic_dbg_prt->buffer_len = fnic_get_trace_data(fnic_dbg_prt);
file->private_data = fnic_dbg_prt;
return 0;
}
/*
* fnic_trace_debugfs_open - Open the fnic trace log
* @inode: The inode pointer
* @file: The file pointer to attach the log output
*
* Description:
* This routine is the entry point for the debugfs open file operation.
* It allocates the necessary buffer for the log, fills the buffer from
* the in-memory log and then returns a pointer to that log in
* the private_data field in @file.
*
* Returns:
* This function returns zero if successful. On error it will return
* a negative error value.
*/
static int fnic_trace_debugfs_open(struct inode *inode,
struct file *file)
{
fnic_dbgfs_t *fnic_dbg_prt;
u8 *rdata_ptr;
rdata_ptr = (u8 *)inode->i_private;
fnic_dbg_prt = kzalloc(sizeof(fnic_dbgfs_t), GFP_KERNEL);
if (!fnic_dbg_prt)
return -ENOMEM;
if (*rdata_ptr == fc_trc_flag->fnic_trace) {
fnic_dbg_prt->buffer = vmalloc(array3_size(3, trace_max_pages,
PAGE_SIZE));
if (!fnic_dbg_prt->buffer) {
kfree(fnic_dbg_prt);
return -ENOMEM;
}
memset((void *)fnic_dbg_prt->buffer, 0,
3 * (trace_max_pages * PAGE_SIZE));
fnic_dbg_prt->buffer_len = fnic_get_trace_data(fnic_dbg_prt);
} else {
fnic_dbg_prt->buffer =
vmalloc(array3_size(3, fnic_fc_trace_max_pages,
PAGE_SIZE));
if (!fnic_dbg_prt->buffer) {
kfree(fnic_dbg_prt);
return -ENOMEM;
}
memset((void *)fnic_dbg_prt->buffer, 0,
3 * (fnic_fc_trace_max_pages * PAGE_SIZE));
fnic_dbg_prt->buffer_len =
fnic_fc_trace_get_data(fnic_dbg_prt, *rdata_ptr);
}
file->private_data = fnic_dbg_prt;
return 0;
}
