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07699f9a | 1 | /* 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 | ||
17 | struct slave_attribute { | |
18 | struct attribute attr; | |
19 | ssize_t (*show)(struct slave *, char *); | |
20 | }; | |
21 | ||
22 | #define SLAVE_ATTR(_name, _mode, _show) \ | |
23 | const 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 | ||
31 | static 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 | } | |
42 | static SLAVE_ATTR_RO(state); | |
43 | ||
44 | static ssize_t mii_status_show(struct slave *slave, char *buf) | |
45 | { | |
46 | return sprintf(buf, "%s\n", bond_slave_link_status(slave->link)); | |
47 | } | |
48 | static SLAVE_ATTR_RO(mii_status); | |
49 | ||
50 | static ssize_t link_failure_count_show(struct slave *slave, char *buf) | |
51 | { | |
52 | return sprintf(buf, "%d\n", slave->link_failure_count); | |
53 | } | |
54 | static SLAVE_ATTR_RO(link_failure_count); | |
55 | ||
56 | static ssize_t perm_hwaddr_show(struct slave *slave, char *buf) | |
57 | { | |
58 | return sprintf(buf, "%pM\n", slave->perm_hwaddr); | |
59 | } | |
60 | static SLAVE_ATTR_RO(perm_hwaddr); | |
61 | ||
62 | static ssize_t queue_id_show(struct slave *slave, char *buf) | |
63 | { | |
64 | return sprintf(buf, "%d\n", slave->queue_id); | |
65 | } | |
66 | static SLAVE_ATTR_RO(queue_id); | |
67 | ||
68 | static ssize_t ad_aggregator_id_show(struct slave *slave, char *buf) | |
69 | { | |
70 | const struct aggregator *agg; | |
71 | ||
72 | if (slave->bond->params.mode == BOND_MODE_8023AD) { | |
73 | agg = SLAVE_AD_INFO(slave).port.aggregator; | |
74 | if (agg) | |
75 | return sprintf(buf, "%d\n", | |
76 | agg->aggregator_identifier); | |
77 | } | |
78 | ||
79 | return sprintf(buf, "N/A\n"); | |
80 | } | |
81 | static SLAVE_ATTR_RO(ad_aggregator_id); | |
82 | ||
83 | static 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 | ||
96 | static 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 | ||
8d783163 | 105 | static const struct sysfs_ops slave_sysfs_ops = { |
07699f9a | 106 | .show = slave_show, |
107 | }; | |
108 | ||
109 | static struct kobj_type slave_ktype = { | |
110 | #ifdef CONFIG_SYSFS | |
111 | .sysfs_ops = &slave_sysfs_ops, | |
112 | #endif | |
113 | }; | |
114 | ||
115 | int 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, | |
0a9099f8 | 121 | &(slave->dev->dev.kobj), "bonding_slave"); |
07699f9a | 122 | 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) { | |
128 | kobject_del(&slave->kobj); | |
129 | return err; | |
130 | } | |
131 | } | |
132 | ||
133 | return 0; | |
134 | } | |
135 | ||
136 | void 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 | ||
143 | kobject_del(&slave->kobj); | |
144 | } |