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_RO(_name) \ |
19 | const struct slave_attribute slave_attr_##_name = __ATTR_RO(_name) |
20 | |
21 | static 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 | } |
32 | static SLAVE_ATTR_RO(state); |
33 | |
34 | static 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 | } |
38 | static SLAVE_ATTR_RO(mii_status); |
39 | |
40 | static 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 | } |
44 | static SLAVE_ATTR_RO(link_failure_count); |
45 | |
46 | static 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 | } |
52 | static SLAVE_ATTR_RO(perm_hwaddr); |
53 | |
54 | static ssize_t queue_id_show(struct slave *slave, char *buf) |
55 | { |
56 | return sysfs_emit(buf, fmt: "%d\n" , slave->queue_id); |
57 | } |
58 | static SLAVE_ATTR_RO(queue_id); |
59 | |
60 | static 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 | } |
73 | static SLAVE_ATTR_RO(ad_aggregator_id); |
74 | |
75 | static 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 | } |
88 | static SLAVE_ATTR_RO(ad_actor_oper_port_state); |
89 | |
90 | static 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 | } |
103 | static SLAVE_ATTR_RO(ad_partner_oper_port_state); |
104 | |
105 | static 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 | |
119 | static 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 | |
128 | const struct sysfs_ops slave_sysfs_ops = { |
129 | .show = slave_show, |
130 | }; |
131 | |
132 | int bond_sysfs_slave_add(struct slave *slave) |
133 | { |
134 | return sysfs_create_files(kobj: &slave->kobj, attr: slave_attrs); |
135 | } |
136 | |
137 | void bond_sysfs_slave_del(struct slave *slave) |
138 | { |
139 | sysfs_remove_files(kobj: &slave->kobj, attr: slave_attrs); |
140 | } |
141 | |