121 lines
3.3 KiB
C
121 lines
3.3 KiB
C
|
/*
|
||
|
|
* hsr_prp_debugfs code
|
||
|
|
* Copyright (C) 2017 Texas Instruments Incorporated
|
||
|
|
*
|
||
|
|
* Author(s):
|
||
|
|
* Murali Karicheri <m-karicheri2@ti.com?
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License as
|
||
|
|
* published by the Free Software Foundation version 2.
|
||
|
|
*
|
||
|
|
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
|
||
|
|
* kind, whether express or implied; without even the implied warranty
|
||
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*/
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/errno.h>
|
||
|
|
#include <linux/debugfs.h>
|
||
|
|
#include "hsr_main.h"
|
||
|
|
#include "hsr_framereg.h"
|
||
|
|
|
||
|
|
static void print_mac_address(struct seq_file *sfp, unsigned char *mac)
|
||
|
|
{
|
||
|
|
seq_printf(sfp, "%02x:%02x:%02x:%02x:%02x:%02x:",
|
||
|
|
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* hsr_prp_node_table_show - Formats and prints node_table entries */
|
||
|
|
static int
|
||
|
|
hsr_prp_node_table_show(struct seq_file *sfp, void *data)
|
||
|
|
{
|
||
|
|
struct hsr_priv *priv = (struct hsr_priv *)sfp->private;
|
||
|
|
struct hsr_node *node;
|
||
|
|
|
||
|
|
seq_puts(sfp, "Node Table entries\n");
|
||
|
|
seq_puts(sfp, "MAC-Address-A, MAC-Address-B, time_in[A], ");
|
||
|
|
seq_puts(sfp, "time_in[B], Address-B port\n");
|
||
|
|
rcu_read_lock();
|
||
|
|
list_for_each_entry_rcu(node, &priv->node_db, mac_list) {
|
||
|
|
/* skip self node */
|
||
|
|
if (hsr_addr_is_self(priv, node->macaddress_A))
|
||
|
|
continue;
|
||
|
|
print_mac_address(sfp, &node->macaddress_A[0]);
|
||
|
|
seq_puts(sfp, " ");
|
||
|
|
print_mac_address(sfp, &node->macaddress_B[0]);
|
||
|
|
seq_printf(sfp, "0x%lx, ", node->time_in[HSR_PT_SLAVE_A]);
|
||
|
|
seq_printf(sfp, "0x%lx ", node->time_in[HSR_PT_SLAVE_B]);
|
||
|
|
seq_printf(sfp, "0x%x\n", node->addr_B_port);
|
||
|
|
}
|
||
|
|
rcu_read_unlock();
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* hsr_prp_node_table_open - Open the node_table file
|
||
|
|
*
|
||
|
|
* Description:
|
||
|
|
* This routine opens a debugfs file node_table of specific hsr device
|
||
|
|
*/
|
||
|
|
static int
|
||
|
|
hsr_prp_node_table_open(struct inode *inode, struct file *filp)
|
||
|
|
{
|
||
|
|
return single_open(filp, hsr_prp_node_table_show, inode->i_private);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct file_operations hsr_prp_fops = {
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.open = hsr_prp_node_table_open,
|
||
|
|
.read = seq_read,
|
||
|
|
.llseek = seq_lseek,
|
||
|
|
.release = single_release,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* hsr_prp_debugfs_init - create hsr-prp node_table file for dumping
|
||
|
|
* the node table
|
||
|
|
*
|
||
|
|
* Description:
|
||
|
|
* When debugfs is configured this routine sets up the node_table file per
|
||
|
|
* hsr/prp device for dumping the node_table entries
|
||
|
|
*/
|
||
|
|
int hsr_prp_debugfs_init(struct hsr_priv *priv)
|
||
|
|
{
|
||
|
|
int rc = -1;
|
||
|
|
struct dentry *de = NULL;
|
||
|
|
|
||
|
|
de = debugfs_create_dir("hsr", NULL);
|
||
|
|
if (!de) {
|
||
|
|
pr_err("Cannot create hsr-prp debugfs root\n");
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
priv->node_tbl_root = de;
|
||
|
|
|
||
|
|
de = debugfs_create_file("node_table", S_IFREG | 0444,
|
||
|
|
priv->node_tbl_root, priv,
|
||
|
|
&hsr_prp_fops);
|
||
|
|
if (!de) {
|
||
|
|
pr_err("Cannot create hsr-prp node_table directory\n");
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
priv->node_tbl_file = de;
|
||
|
|
rc = 0;
|
||
|
|
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* hsr_prp_debugfs_term - Tear down debugfs intrastructure
|
||
|
|
*
|
||
|
|
* Description:
|
||
|
|
* When Debufs is configured this routine removes debugfs file system
|
||
|
|
* elements that are specific to hsr-prp
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
hsr_prp_debugfs_term(struct hsr_priv *priv)
|
||
|
|
{
|
||
|
|
debugfs_remove(priv->node_tbl_file);
|
||
|
|
priv->node_tbl_file = NULL;
|
||
|
|
debugfs_remove(priv->node_tbl_root);
|
||
|
|
priv->node_tbl_root = NULL;
|
||
|
|
}
|