1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* Sysfs attributes of bond slaves
3 *
4 * Copyright (c) 2014 Scott Feldman <sfeldma@cumulusnetworks.com>
5 */
6
7 #include <linux/capability.h>
8 #include <linux/kernel.h>
9 #include <linux/netdevice.h>
10
11 #include <net/bonding.h>
12
13 struct slave_attribute {
14 struct attribute attr;
15 ssize_t (*show)(struct slave *, char *);
16 };
17
18 #define SLAVE_ATTR(_name, _mode, _show) \
19 const struct slave_attribute slave_attr_##_name = { \
20 .attr = {.name = __stringify(_name), \
21 .mode = _mode }, \
22 .show = _show, \
23 };
24 #define SLAVE_ATTR_RO(_name) \
25 SLAVE_ATTR(_name, 0444, _name##_show)
26
state_show(struct slave * slave,char * buf)27 static ssize_t state_show(struct slave *slave, char *buf)
28 {
29 switch (bond_slave_state(slave)) {
30 case BOND_STATE_ACTIVE:
31 return sprintf(buf, "active\n");
32 case BOND_STATE_BACKUP:
33 return sprintf(buf, "backup\n");
34 default:
35 return sprintf(buf, "UNKNOWN\n");
36 }
37 }
38 static SLAVE_ATTR_RO(state);
39
mii_status_show(struct slave * slave,char * buf)40 static ssize_t mii_status_show(struct slave *slave, char *buf)
41 {
42 return sprintf(buf, "%s\n", bond_slave_link_status(slave->link));
43 }
44 static SLAVE_ATTR_RO(mii_status);
45
link_failure_count_show(struct slave * slave,char * buf)46 static ssize_t link_failure_count_show(struct slave *slave, char *buf)
47 {
48 return sprintf(buf, "%d\n", slave->link_failure_count);
49 }
50 static SLAVE_ATTR_RO(link_failure_count);
51
perm_hwaddr_show(struct slave * slave,char * buf)52 static ssize_t perm_hwaddr_show(struct slave *slave, char *buf)
53 {
54 return sprintf(buf, "%*phC\n",
55 slave->dev->addr_len,
56 slave->perm_hwaddr);
57 }
58 static SLAVE_ATTR_RO(perm_hwaddr);
59
queue_id_show(struct slave * slave,char * buf)60 static ssize_t queue_id_show(struct slave *slave, char *buf)
61 {
62 return sprintf(buf, "%d\n", slave->queue_id);
63 }
64 static SLAVE_ATTR_RO(queue_id);
65
ad_aggregator_id_show(struct slave * slave,char * buf)66 static ssize_t ad_aggregator_id_show(struct slave *slave, char *buf)
67 {
68 const struct aggregator *agg;
69
70 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
71 agg = SLAVE_AD_INFO(slave)->port.aggregator;
72 if (agg)
73 return sprintf(buf, "%d\n",
74 agg->aggregator_identifier);
75 }
76
77 return sprintf(buf, "N/A\n");
78 }
79 static SLAVE_ATTR_RO(ad_aggregator_id);
80
ad_actor_oper_port_state_show(struct slave * slave,char * buf)81 static ssize_t ad_actor_oper_port_state_show(struct slave *slave, char *buf)
82 {
83 const struct port *ad_port;
84
85 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
86 ad_port = &SLAVE_AD_INFO(slave)->port;
87 if (ad_port->aggregator)
88 return sprintf(buf, "%u\n",
89 ad_port->actor_oper_port_state);
90 }
91
92 return sprintf(buf, "N/A\n");
93 }
94 static SLAVE_ATTR_RO(ad_actor_oper_port_state);
95
ad_partner_oper_port_state_show(struct slave * slave,char * buf)96 static ssize_t ad_partner_oper_port_state_show(struct slave *slave, char *buf)
97 {
98 const struct port *ad_port;
99
100 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
101 ad_port = &SLAVE_AD_INFO(slave)->port;
102 if (ad_port->aggregator)
103 return sprintf(buf, "%u\n",
104 ad_port->partner_oper.port_state);
105 }
106
107 return sprintf(buf, "N/A\n");
108 }
109 static SLAVE_ATTR_RO(ad_partner_oper_port_state);
110
111 static const struct slave_attribute *slave_attrs[] = {
112 &slave_attr_state,
113 &slave_attr_mii_status,
114 &slave_attr_link_failure_count,
115 &slave_attr_perm_hwaddr,
116 &slave_attr_queue_id,
117 &slave_attr_ad_aggregator_id,
118 &slave_attr_ad_actor_oper_port_state,
119 &slave_attr_ad_partner_oper_port_state,
120 NULL
121 };
122
123 #define to_slave_attr(_at) container_of(_at, struct slave_attribute, attr)
124 #define to_slave(obj) container_of(obj, struct slave, kobj)
125
slave_show(struct kobject * kobj,struct attribute * attr,char * buf)126 static ssize_t slave_show(struct kobject *kobj,
127 struct attribute *attr, char *buf)
128 {
129 struct slave_attribute *slave_attr = to_slave_attr(attr);
130 struct slave *slave = to_slave(kobj);
131
132 return slave_attr->show(slave, buf);
133 }
134
135 static const struct sysfs_ops slave_sysfs_ops = {
136 .show = slave_show,
137 };
138
139 static struct kobj_type slave_ktype = {
140 #ifdef CONFIG_SYSFS
141 .sysfs_ops = &slave_sysfs_ops,
142 #endif
143 };
144
bond_sysfs_slave_add(struct slave * slave)145 int bond_sysfs_slave_add(struct slave *slave)
146 {
147 const struct slave_attribute **a;
148 int err;
149
150 err = kobject_init_and_add(&slave->kobj, &slave_ktype,
151 &(slave->dev->dev.kobj), "bonding_slave");
152 if (err)
153 return err;
154
155 for (a = slave_attrs; *a; ++a) {
156 err = sysfs_create_file(&slave->kobj, &((*a)->attr));
157 if (err) {
158 kobject_put(&slave->kobj);
159 return err;
160 }
161 }
162
163 return 0;
164 }
165
bond_sysfs_slave_del(struct slave * slave)166 void bond_sysfs_slave_del(struct slave *slave)
167 {
168 const struct slave_attribute **a;
169
170 for (a = slave_attrs; *a; ++a)
171 sysfs_remove_file(&slave->kobj, &((*a)->attr));
172
173 kobject_put(&slave->kobj);
174 }
175
