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sfeldma@cumulusnetworks.com07699f92014-01-16 22:57:49 -08001/* Sysfs attributes of bond slaves
2 *
3 * Copyright (c) 2014 Scott Feldman <sfeldma@cumulusnetworks.com>
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 */
10
11#include <linux/capability.h>
12#include <linux/kernel.h>
13#include <linux/netdevice.h>
14
15#include "bonding.h"
16
17struct slave_attribute {
18 struct attribute attr;
19 ssize_t (*show)(struct slave *, char *);
20};
21
22#define SLAVE_ATTR(_name, _mode, _show) \
23const struct slave_attribute slave_attr_##_name = { \
24 .attr = {.name = __stringify(_name), \
25 .mode = _mode }, \
26 .show = _show, \
27};
28#define SLAVE_ATTR_RO(_name) \
29 SLAVE_ATTR(_name, S_IRUGO, _name##_show)
30
31static ssize_t state_show(struct slave *slave, char *buf)
32{
33 switch (bond_slave_state(slave)) {
34 case BOND_STATE_ACTIVE:
35 return sprintf(buf, "active\n");
36 case BOND_STATE_BACKUP:
37 return sprintf(buf, "backup\n");
38 default:
39 return sprintf(buf, "UNKONWN\n");
40 }
41}
42static SLAVE_ATTR_RO(state);
43
44static ssize_t mii_status_show(struct slave *slave, char *buf)
45{
46 return sprintf(buf, "%s\n", bond_slave_link_status(slave->link));
47}
48static SLAVE_ATTR_RO(mii_status);
49
50static ssize_t link_failure_count_show(struct slave *slave, char *buf)
51{
52 return sprintf(buf, "%d\n", slave->link_failure_count);
53}
54static SLAVE_ATTR_RO(link_failure_count);
55
56static ssize_t perm_hwaddr_show(struct slave *slave, char *buf)
57{
58 return sprintf(buf, "%pM\n", slave->perm_hwaddr);
59}
60static SLAVE_ATTR_RO(perm_hwaddr);
61
62static ssize_t queue_id_show(struct slave *slave, char *buf)
63{
64 return sprintf(buf, "%d\n", slave->queue_id);
65}
66static SLAVE_ATTR_RO(queue_id);
67
68static ssize_t ad_aggregator_id_show(struct slave *slave, char *buf)
69{
70 const struct aggregator *agg;
71
Veaceslav Falico01844092014-05-15 21:39:55 +020072 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
dingtianhong3fdddd82014-05-12 15:08:43 +080073 agg = SLAVE_AD_INFO(slave)->port.aggregator;
sfeldma@cumulusnetworks.com07699f92014-01-16 22:57:49 -080074 if (agg)
75 return sprintf(buf, "%d\n",
76 agg->aggregator_identifier);
77 }
78
79 return sprintf(buf, "N/A\n");
80}
81static SLAVE_ATTR_RO(ad_aggregator_id);
82
83static const struct slave_attribute *slave_attrs[] = {
84 &slave_attr_state,
85 &slave_attr_mii_status,
86 &slave_attr_link_failure_count,
87 &slave_attr_perm_hwaddr,
88 &slave_attr_queue_id,
89 &slave_attr_ad_aggregator_id,
90 NULL
91};
92
93#define to_slave_attr(_at) container_of(_at, struct slave_attribute, attr)
94#define to_slave(obj) container_of(obj, struct slave, kobj)
95
96static ssize_t slave_show(struct kobject *kobj,
97 struct attribute *attr, char *buf)
98{
99 struct slave_attribute *slave_attr = to_slave_attr(attr);
100 struct slave *slave = to_slave(kobj);
101
102 return slave_attr->show(slave, buf);
103}
104
stephen hemminger8d783162014-01-18 14:54:18 -0800105static const struct sysfs_ops slave_sysfs_ops = {
sfeldma@cumulusnetworks.com07699f92014-01-16 22:57:49 -0800106 .show = slave_show,
107};
108
109static struct kobj_type slave_ktype = {
110#ifdef CONFIG_SYSFS
111 .sysfs_ops = &slave_sysfs_ops,
112#endif
113};
114
115int bond_sysfs_slave_add(struct slave *slave)
116{
117 const struct slave_attribute **a;
118 int err;
119
120 err = kobject_init_and_add(&slave->kobj, &slave_ktype,
Jiri Pirko0a9099f2014-01-22 09:05:53 +0100121 &(slave->dev->dev.kobj), "bonding_slave");
sfeldma@cumulusnetworks.com07699f92014-01-16 22:57:49 -0800122 if (err)
123 return err;
124
125 for (a = slave_attrs; *a; ++a) {
126 err = sysfs_create_file(&slave->kobj, &((*a)->attr));
127 if (err) {
Veaceslav Falico7afcaec2014-07-29 13:27:43 +0200128 kobject_put(&slave->kobj);
sfeldma@cumulusnetworks.com07699f92014-01-16 22:57:49 -0800129 return err;
130 }
131 }
132
133 return 0;
134}
135
136void bond_sysfs_slave_del(struct slave *slave)
137{
138 const struct slave_attribute **a;
139
140 for (a = slave_attrs; *a; ++a)
141 sysfs_remove_file(&slave->kobj, &((*a)->attr));
142
Veaceslav Falico7afcaec2014-07-29 13:27:43 +0200143 kobject_put(&slave->kobj);
sfeldma@cumulusnetworks.com07699f92014-01-16 22:57:49 -0800144}