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
13struct slave_attribute {
14 struct attribute attr;
15 ssize_t (*show)(struct slave *, char *);
16};
17
18#define SLAVE_ATTR_RO(_name) \
19const struct slave_attribute slave_attr_##_name = __ATTR_RO(_name)
20
21static ssize_t state_show(struct slave *slave, char *buf)
22{
23 switch (bond_slave_state(slave)) {
24 case BOND_STATE_ACTIVE:
25 return sysfs_emit(buf, fmt: "active\n");
26 case BOND_STATE_BACKUP:
27 return sysfs_emit(buf, fmt: "backup\n");
28 default:
29 return sysfs_emit(buf, fmt: "UNKNOWN\n");
30 }
31}
32static SLAVE_ATTR_RO(state);
33
34static ssize_t mii_status_show(struct slave *slave, char *buf)
35{
36 return sysfs_emit(buf, fmt: "%s\n", bond_slave_link_status(link: slave->link));
37}
38static SLAVE_ATTR_RO(mii_status);
39
40static ssize_t link_failure_count_show(struct slave *slave, char *buf)
41{
42 return sysfs_emit(buf, fmt: "%d\n", slave->link_failure_count);
43}
44static SLAVE_ATTR_RO(link_failure_count);
45
46static ssize_t perm_hwaddr_show(struct slave *slave, char *buf)
47{
48 return sysfs_emit(buf, fmt: "%*phC\n",
49 slave->dev->addr_len,
50 slave->perm_hwaddr);
51}
52static SLAVE_ATTR_RO(perm_hwaddr);
53
54static ssize_t queue_id_show(struct slave *slave, char *buf)
55{
56 return sysfs_emit(buf, fmt: "%d\n", slave->queue_id);
57}
58static SLAVE_ATTR_RO(queue_id);
59
60static ssize_t ad_aggregator_id_show(struct slave *slave, char *buf)
61{
62 const struct aggregator *agg;
63
64 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
65 agg = SLAVE_AD_INFO(slave)->port.aggregator;
66 if (agg)
67 return sysfs_emit(buf, fmt: "%d\n",
68 agg->aggregator_identifier);
69 }
70
71 return sysfs_emit(buf, fmt: "N/A\n");
72}
73static SLAVE_ATTR_RO(ad_aggregator_id);
74
75static ssize_t ad_actor_oper_port_state_show(struct slave *slave, char *buf)
76{
77 const struct port *ad_port;
78
79 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
80 ad_port = &SLAVE_AD_INFO(slave)->port;
81 if (ad_port->aggregator)
82 return sysfs_emit(buf, fmt: "%u\n",
83 ad_port->actor_oper_port_state);
84 }
85
86 return sysfs_emit(buf, fmt: "N/A\n");
87}
88static SLAVE_ATTR_RO(ad_actor_oper_port_state);
89
90static ssize_t ad_partner_oper_port_state_show(struct slave *slave, char *buf)
91{
92 const struct port *ad_port;
93
94 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
95 ad_port = &SLAVE_AD_INFO(slave)->port;
96 if (ad_port->aggregator)
97 return sysfs_emit(buf, fmt: "%u\n",
98 ad_port->partner_oper.port_state);
99 }
100
101 return sysfs_emit(buf, fmt: "N/A\n");
102}
103static SLAVE_ATTR_RO(ad_partner_oper_port_state);
104
105static const struct attribute *slave_attrs[] = {
106 &slave_attr_state.attr,
107 &slave_attr_mii_status.attr,
108 &slave_attr_link_failure_count.attr,
109 &slave_attr_perm_hwaddr.attr,
110 &slave_attr_queue_id.attr,
111 &slave_attr_ad_aggregator_id.attr,
112 &slave_attr_ad_actor_oper_port_state.attr,
113 &slave_attr_ad_partner_oper_port_state.attr,
114 NULL
115};
116
117#define to_slave_attr(_at) container_of(_at, struct slave_attribute, attr)
118
119static ssize_t slave_show(struct kobject *kobj,
120 struct attribute *attr, char *buf)
121{
122 struct slave_attribute *slave_attr = to_slave_attr(attr);
123 struct slave *slave = to_slave(kobj);
124
125 return slave_attr->show(slave, buf);
126}
127
128const struct sysfs_ops slave_sysfs_ops = {
129 .show = slave_show,
130};
131
132int bond_sysfs_slave_add(struct slave *slave)
133{
134 return sysfs_create_files(kobj: &slave->kobj, attr: slave_attrs);
135}
136
137void bond_sysfs_slave_del(struct slave *slave)
138{
139 sysfs_remove_files(kobj: &slave->kobj, attr: slave_attrs);
140}
141

source code of linux/drivers/net/bonding/bond_sysfs_slave.c