1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/proc_fs.h>
3 #include <linux/export.h>
4 #include <net/net_namespace.h>
5 #include <net/netns/generic.h>
6 #include <net/bonding.h>
7
8 #include "bonding_priv.h"
9
bond_info_seq_start(struct seq_file * seq,loff_t * pos)10 static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos)
11 __acquires(RCU)
12 {
13 struct bonding *bond = PDE_DATA(file_inode(seq->file));
14 struct list_head *iter;
15 struct slave *slave;
16 loff_t off = 0;
17
18 rcu_read_lock();
19
20 if (*pos == 0)
21 return SEQ_START_TOKEN;
22
23 bond_for_each_slave_rcu(bond, slave, iter)
24 if (++off == *pos)
25 return slave;
26
27 return NULL;
28 }
29
bond_info_seq_next(struct seq_file * seq,void * v,loff_t * pos)30 static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos)
31 {
32 struct bonding *bond = PDE_DATA(file_inode(seq->file));
33 struct list_head *iter;
34 struct slave *slave;
35 bool found = false;
36
37 ++*pos;
38 if (v == SEQ_START_TOKEN)
39 return bond_first_slave_rcu(bond);
40
41 bond_for_each_slave_rcu(bond, slave, iter) {
42 if (found)
43 return slave;
44 if (slave == v)
45 found = true;
46 }
47
48 return NULL;
49 }
50
bond_info_seq_stop(struct seq_file * seq,void * v)51 static void bond_info_seq_stop(struct seq_file *seq, void *v)
52 __releases(RCU)
53 {
54 rcu_read_unlock();
55 }
56
bond_info_show_master(struct seq_file * seq)57 static void bond_info_show_master(struct seq_file *seq)
58 {
59 struct bonding *bond = PDE_DATA(file_inode(seq->file));
60 const struct bond_opt_value *optval;
61 struct slave *curr, *primary;
62 int i;
63
64 curr = rcu_dereference(bond->curr_active_slave);
65
66 seq_printf(seq, "Bonding Mode: %s",
67 bond_mode_name(BOND_MODE(bond)));
68
69 if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP &&
70 bond->params.fail_over_mac) {
71 optval = bond_opt_get_val(BOND_OPT_FAIL_OVER_MAC,
72 bond->params.fail_over_mac);
73 seq_printf(seq, " (fail_over_mac %s)", optval->string);
74 }
75
76 seq_printf(seq, "\n");
77
78 if (bond_mode_uses_xmit_hash(bond)) {
79 optval = bond_opt_get_val(BOND_OPT_XMIT_HASH,
80 bond->params.xmit_policy);
81 seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
82 optval->string, bond->params.xmit_policy);
83 }
84
85 if (bond_uses_primary(bond)) {
86 primary = rcu_dereference(bond->primary_slave);
87 seq_printf(seq, "Primary Slave: %s",
88 primary ? primary->dev->name : "None");
89 if (primary) {
90 optval = bond_opt_get_val(BOND_OPT_PRIMARY_RESELECT,
91 bond->params.primary_reselect);
92 seq_printf(seq, " (primary_reselect %s)",
93 optval->string);
94 }
95
96 seq_printf(seq, "\nCurrently Active Slave: %s\n",
97 (curr) ? curr->dev->name : "None");
98 }
99
100 seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ?
101 "up" : "down");
102 seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon);
103 seq_printf(seq, "Up Delay (ms): %d\n",
104 bond->params.updelay * bond->params.miimon);
105 seq_printf(seq, "Down Delay (ms): %d\n",
106 bond->params.downdelay * bond->params.miimon);
107 seq_printf(seq, "Peer Notification Delay (ms): %d\n",
108 bond->params.peer_notif_delay * bond->params.miimon);
109
110
111 /* ARP information */
112 if (bond->params.arp_interval > 0) {
113 int printed = 0;
114 seq_printf(seq, "ARP Polling Interval (ms): %d\n",
115 bond->params.arp_interval);
116
117 seq_printf(seq, "ARP IP target/s (n.n.n.n form):");
118
119 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
120 if (!bond->params.arp_targets[i])
121 break;
122 if (printed)
123 seq_printf(seq, ",");
124 seq_printf(seq, " %pI4", &bond->params.arp_targets[i]);
125 printed = 1;
126 }
127 seq_printf(seq, "\n");
128 }
129
130 if (BOND_MODE(bond) == BOND_MODE_8023AD) {
131 struct ad_info ad_info;
132
133 seq_puts(seq, "\n802.3ad info\n");
134 seq_printf(seq, "LACP rate: %s\n",
135 (bond->params.lacp_fast) ? "fast" : "slow");
136 seq_printf(seq, "Min links: %d\n", bond->params.min_links);
137 optval = bond_opt_get_val(BOND_OPT_AD_SELECT,
138 bond->params.ad_select);
139 seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
140 optval->string);
141 if (capable(CAP_NET_ADMIN)) {
142 seq_printf(seq, "System priority: %d\n",
143 BOND_AD_INFO(bond).system.sys_priority);
144 seq_printf(seq, "System MAC address: %pM\n",
145 &BOND_AD_INFO(bond).system.sys_mac_addr);
146
147 if (__bond_3ad_get_active_agg_info(bond, &ad_info)) {
148 seq_printf(seq,
149 "bond %s has no active aggregator\n",
150 bond->dev->name);
151 } else {
152 seq_printf(seq, "Active Aggregator Info:\n");
153
154 seq_printf(seq, "\tAggregator ID: %d\n",
155 ad_info.aggregator_id);
156 seq_printf(seq, "\tNumber of ports: %d\n",
157 ad_info.ports);
158 seq_printf(seq, "\tActor Key: %d\n",
159 ad_info.actor_key);
160 seq_printf(seq, "\tPartner Key: %d\n",
161 ad_info.partner_key);
162 seq_printf(seq, "\tPartner Mac Address: %pM\n",
163 ad_info.partner_system);
164 }
165 }
166 }
167 }
168
bond_info_show_slave(struct seq_file * seq,const struct slave * slave)169 static void bond_info_show_slave(struct seq_file *seq,
170 const struct slave *slave)
171 {
172 struct bonding *bond = PDE_DATA(file_inode(seq->file));
173
174 seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
175 seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link));
176 if (slave->speed == SPEED_UNKNOWN)
177 seq_printf(seq, "Speed: %s\n", "Unknown");
178 else
179 seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
180
181 if (slave->duplex == DUPLEX_UNKNOWN)
182 seq_printf(seq, "Duplex: %s\n", "Unknown");
183 else
184 seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");
185
186 seq_printf(seq, "Link Failure Count: %u\n",
187 slave->link_failure_count);
188
189 seq_printf(seq, "Permanent HW addr: %*phC\n",
190 slave->dev->addr_len, slave->perm_hwaddr);
191 seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
192
193 if (BOND_MODE(bond) == BOND_MODE_8023AD) {
194 const struct port *port = &SLAVE_AD_INFO(slave)->port;
195 const struct aggregator *agg = port->aggregator;
196
197 if (agg) {
198 seq_printf(seq, "Aggregator ID: %d\n",
199 agg->aggregator_identifier);
200 seq_printf(seq, "Actor Churn State: %s\n",
201 bond_3ad_churn_desc(port->sm_churn_actor_state));
202 seq_printf(seq, "Partner Churn State: %s\n",
203 bond_3ad_churn_desc(port->sm_churn_partner_state));
204 seq_printf(seq, "Actor Churned Count: %d\n",
205 port->churn_actor_count);
206 seq_printf(seq, "Partner Churned Count: %d\n",
207 port->churn_partner_count);
208
209 if (capable(CAP_NET_ADMIN)) {
210 seq_puts(seq, "details actor lacp pdu:\n");
211 seq_printf(seq, " system priority: %d\n",
212 port->actor_system_priority);
213 seq_printf(seq, " system mac address: %pM\n",
214 &port->actor_system);
215 seq_printf(seq, " port key: %d\n",
216 port->actor_oper_port_key);
217 seq_printf(seq, " port priority: %d\n",
218 port->actor_port_priority);
219 seq_printf(seq, " port number: %d\n",
220 port->actor_port_number);
221 seq_printf(seq, " port state: %d\n",
222 port->actor_oper_port_state);
223
224 seq_puts(seq, "details partner lacp pdu:\n");
225 seq_printf(seq, " system priority: %d\n",
226 port->partner_oper.system_priority);
227 seq_printf(seq, " system mac address: %pM\n",
228 &port->partner_oper.system);
229 seq_printf(seq, " oper key: %d\n",
230 port->partner_oper.key);
231 seq_printf(seq, " port priority: %d\n",
232 port->partner_oper.port_priority);
233 seq_printf(seq, " port number: %d\n",
234 port->partner_oper.port_number);
235 seq_printf(seq, " port state: %d\n",
236 port->partner_oper.port_state);
237 }
238 } else {
239 seq_puts(seq, "Aggregator ID: N/A\n");
240 }
241 }
242 }
243
bond_info_seq_show(struct seq_file * seq,void * v)244 static int bond_info_seq_show(struct seq_file *seq, void *v)
245 {
246 if (v == SEQ_START_TOKEN) {
247 seq_printf(seq, "%s\n", bond_version);
248 bond_info_show_master(seq);
249 } else
250 bond_info_show_slave(seq, v);
251
252 return 0;
253 }
254
255 static const struct seq_operations bond_info_seq_ops = {
256 .start = bond_info_seq_start,
257 .next = bond_info_seq_next,
258 .stop = bond_info_seq_stop,
259 .show = bond_info_seq_show,
260 };
261
bond_create_proc_entry(struct bonding * bond)262 void bond_create_proc_entry(struct bonding *bond)
263 {
264 struct net_device *bond_dev = bond->dev;
265 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
266
267 if (bn->proc_dir) {
268 bond->proc_entry = proc_create_seq_data(bond_dev->name, 0444,
269 bn->proc_dir, &bond_info_seq_ops, bond);
270 if (bond->proc_entry == NULL)
271 netdev_warn(bond_dev, "Cannot create /proc/net/%s/%s\n",
272 DRV_NAME, bond_dev->name);
273 else
274 memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
275 }
276 }
277
bond_remove_proc_entry(struct bonding * bond)278 void bond_remove_proc_entry(struct bonding *bond)
279 {
280 struct net_device *bond_dev = bond->dev;
281 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
282
283 if (bn->proc_dir && bond->proc_entry) {
284 remove_proc_entry(bond->proc_file_name, bn->proc_dir);
285 memset(bond->proc_file_name, 0, IFNAMSIZ);
286 bond->proc_entry = NULL;
287 }
288 }
289
290 /* Create the bonding directory under /proc/net, if doesn't exist yet.
291 * Caller must hold rtnl_lock.
292 */
bond_create_proc_dir(struct bond_net * bn)293 void __net_init bond_create_proc_dir(struct bond_net *bn)
294 {
295 if (!bn->proc_dir) {
296 bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
297 if (!bn->proc_dir)
298 pr_warn("Warning: Cannot create /proc/net/%s\n",
299 DRV_NAME);
300 }
301 }
302
303 /* Destroy the bonding directory under /proc/net, if empty.
304 * Caller must hold rtnl_lock.
305 */
bond_destroy_proc_dir(struct bond_net * bn)306 void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
307 {
308 if (bn->proc_dir) {
309 remove_proc_entry(DRV_NAME, bn->net->proc_net);
310 bn->proc_dir = NULL;
311 }
312 }
313