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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 | ||
1ef8019b | 15 | #include <net/bonding.h> |
07699f9a | 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: | |
9b13494c | 39 | return sprintf(buf, "UNKNOWN\n"); |
07699f9a | 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 | ||
01844098 | 72 | if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) { |
3fdddd85 | 73 | agg = SLAVE_AD_INFO(slave)->port.aggregator; |
07699f9a | 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 | ||
254cb6db NA |
83 | static ssize_t ad_actor_oper_port_state_show(struct slave *slave, char *buf) |
84 | { | |
85 | const struct port *ad_port; | |
86 | ||
87 | if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) { | |
88 | ad_port = &SLAVE_AD_INFO(slave)->port; | |
89 | if (ad_port->aggregator) | |
90 | return sprintf(buf, "%u\n", | |
91 | ad_port->actor_oper_port_state); | |
92 | } | |
93 | ||
94 | return sprintf(buf, "N/A\n"); | |
95 | } | |
96 | static SLAVE_ATTR_RO(ad_actor_oper_port_state); | |
97 | ||
46ea297e NA |
98 | static ssize_t ad_partner_oper_port_state_show(struct slave *slave, char *buf) |
99 | { | |
100 | const struct port *ad_port; | |
101 | ||
102 | if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) { | |
103 | ad_port = &SLAVE_AD_INFO(slave)->port; | |
104 | if (ad_port->aggregator) | |
105 | return sprintf(buf, "%u\n", | |
106 | ad_port->partner_oper.port_state); | |
107 | } | |
108 | ||
109 | return sprintf(buf, "N/A\n"); | |
110 | } | |
111 | static SLAVE_ATTR_RO(ad_partner_oper_port_state); | |
112 | ||
07699f9a | 113 | static const struct slave_attribute *slave_attrs[] = { |
114 | &slave_attr_state, | |
115 | &slave_attr_mii_status, | |
116 | &slave_attr_link_failure_count, | |
117 | &slave_attr_perm_hwaddr, | |
118 | &slave_attr_queue_id, | |
119 | &slave_attr_ad_aggregator_id, | |
254cb6db | 120 | &slave_attr_ad_actor_oper_port_state, |
46ea297e | 121 | &slave_attr_ad_partner_oper_port_state, |
07699f9a | 122 | NULL |
123 | }; | |
124 | ||
125 | #define to_slave_attr(_at) container_of(_at, struct slave_attribute, attr) | |
126 | #define to_slave(obj) container_of(obj, struct slave, kobj) | |
127 | ||
128 | static ssize_t slave_show(struct kobject *kobj, | |
129 | struct attribute *attr, char *buf) | |
130 | { | |
131 | struct slave_attribute *slave_attr = to_slave_attr(attr); | |
132 | struct slave *slave = to_slave(kobj); | |
133 | ||
134 | return slave_attr->show(slave, buf); | |
135 | } | |
136 | ||
8d783163 | 137 | static const struct sysfs_ops slave_sysfs_ops = { |
07699f9a | 138 | .show = slave_show, |
139 | }; | |
140 | ||
141 | static struct kobj_type slave_ktype = { | |
142 | #ifdef CONFIG_SYSFS | |
143 | .sysfs_ops = &slave_sysfs_ops, | |
144 | #endif | |
145 | }; | |
146 | ||
147 | int bond_sysfs_slave_add(struct slave *slave) | |
148 | { | |
149 | const struct slave_attribute **a; | |
150 | int err; | |
151 | ||
152 | err = kobject_init_and_add(&slave->kobj, &slave_ktype, | |
0a9099f8 | 153 | &(slave->dev->dev.kobj), "bonding_slave"); |
07699f9a | 154 | if (err) |
155 | return err; | |
156 | ||
157 | for (a = slave_attrs; *a; ++a) { | |
158 | err = sysfs_create_file(&slave->kobj, &((*a)->attr)); | |
159 | if (err) { | |
7afcaec4 | 160 | kobject_put(&slave->kobj); |
07699f9a | 161 | return err; |
162 | } | |
163 | } | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
168 | void bond_sysfs_slave_del(struct slave *slave) | |
169 | { | |
170 | const struct slave_attribute **a; | |
171 | ||
172 | for (a = slave_attrs; *a; ++a) | |
173 | sysfs_remove_file(&slave->kobj, &((*a)->attr)); | |
174 | ||
7afcaec4 | 175 | kobject_put(&slave->kobj); |
07699f9a | 176 | } |