1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/proc_fs.h>
3 #include <linux/ethtool.h>
4 #include <linux/export.h>
5 #include <net/net_namespace.h>
6 #include <net/netns/generic.h>
7 #include <net/bonding.h>
8
9 #include "bonding_priv.h"
10
bond_info_seq_start(struct seq_file * seq,loff_t * pos)11 static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos)
12 __acquires(RCU)
13 {
14 struct bonding *bond = pde_data(file_inode(seq->file));
15 struct list_head *iter;
16 struct slave *slave;
17 loff_t off = 0;
18
19 rcu_read_lock();
20
21 if (*pos == 0)
22 return SEQ_START_TOKEN;
23
24 bond_for_each_slave_rcu(bond, slave, iter)
25 if (++off == *pos)
26 return slave;
27
28 return NULL;
29 }
30
bond_info_seq_next(struct seq_file * seq,void * v,loff_t * pos)31 static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos)
32 {
33 struct bonding *bond = pde_data(file_inode(seq->file));
34 struct list_head *iter;
35 struct slave *slave;
36 bool found = false;
37
38 ++*pos;
39 if (v == SEQ_START_TOKEN)
40 return bond_first_slave_rcu(bond);
41
42 bond_for_each_slave_rcu(bond, slave, iter) {
43 if (found)
44 return slave;
45 if (slave == v)
46 found = true;
47 }
48
49 return NULL;
50 }
51
bond_info_seq_stop(struct seq_file * seq,void * v)52 static void bond_info_seq_stop(struct seq_file *seq, void *v)
53 __releases(RCU)
54 {
55 rcu_read_unlock();
56 }
57
bond_info_show_master(struct seq_file * seq)58 static void bond_info_show_master(struct seq_file *seq)
59 {
60 struct bonding *bond = pde_data(file_inode(seq->file));
61 const struct bond_opt_value *optval;
62 struct slave *curr, *primary;
63 int i;
64
65 curr = rcu_dereference(bond->curr_active_slave);
66
67 seq_printf(seq, "Bonding Mode: %s",
68 bond_mode_name(BOND_MODE(bond)));
69
70 if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP &&
71 bond->params.fail_over_mac) {
72 optval = bond_opt_get_val(BOND_OPT_FAIL_OVER_MAC,
73 bond->params.fail_over_mac);
74 seq_printf(seq, " (fail_over_mac %s)", optval->string);
75 }
76
77 seq_printf(seq, "\n");
78
79 if (bond_mode_uses_xmit_hash(bond)) {
80 optval = bond_opt_get_val(BOND_OPT_XMIT_HASH,
81 bond->params.xmit_policy);
82 seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
83 optval->string, bond->params.xmit_policy);
84 }
85
86 if (bond_uses_primary(bond)) {
87 primary = rcu_dereference(bond->primary_slave);
88 seq_printf(seq, "Primary Slave: %s",
89 primary ? primary->dev->name : "None");
90 if (primary) {
91 optval = bond_opt_get_val(BOND_OPT_PRIMARY_RESELECT,
92 bond->params.primary_reselect);
93 seq_printf(seq, " (primary_reselect %s)",
94 optval->string);
95 }
96
97 seq_printf(seq, "\nCurrently Active Slave: %s\n",
98 (curr) ? curr->dev->name : "None");
99 }
100
101 seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ?
102 "up" : "down");
103 seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon);
104 seq_printf(seq, "Up Delay (ms): %d\n",
105 bond->params.updelay * bond->params.miimon);
106 seq_printf(seq, "Down Delay (ms): %d\n",
107 bond->params.downdelay * bond->params.miimon);
108 seq_printf(seq, "Peer Notification Delay (ms): %d\n",
109 bond->params.peer_notif_delay * bond->params.miimon);
110
111
112 /* ARP information */
113 if (bond->params.arp_interval > 0) {
114 int printed = 0;
115
116 seq_printf(seq, "ARP Polling Interval (ms): %d\n",
117 bond->params.arp_interval);
118 seq_printf(seq, "ARP Missed Max: %u\n",
119 bond->params.missed_max);
120
121 seq_printf(seq, "ARP IP target/s (n.n.n.n form):");
122
123 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
124 if (!bond->params.arp_targets[i])
125 break;
126 if (printed)
127 seq_printf(seq, ",");
128 seq_printf(seq, " %pI4", &bond->params.arp_targets[i]);
129 printed = 1;
130 }
131 seq_printf(seq, "\n");
132
133 #if IS_ENABLED(CONFIG_IPV6)
134 printed = 0;
135 seq_printf(seq, "NS IPv6 target/s (xx::xx form):");
136
137 for (i = 0; (i < BOND_MAX_NS_TARGETS); i++) {
138 if (ipv6_addr_any(&bond->params.ns_targets[i]))
139 break;
140 if (printed)
141 seq_printf(seq, ",");
142 seq_printf(seq, " %pI6c", &bond->params.ns_targets[i]);
143 printed = 1;
144 }
145 seq_printf(seq, "\n");
146 #endif
147 }
148
149 if (BOND_MODE(bond) == BOND_MODE_8023AD) {
150 struct ad_info ad_info;
151
152 seq_puts(seq, "\n802.3ad info\n");
153 seq_printf(seq, "LACP active: %s\n",
154 (bond->params.lacp_active) ? "on" : "off");
155 seq_printf(seq, "LACP rate: %s\n",
156 (bond->params.lacp_fast) ? "fast" : "slow");
157 seq_printf(seq, "Min links: %d\n", bond->params.min_links);
158 optval = bond_opt_get_val(BOND_OPT_AD_SELECT,
159 bond->params.ad_select);
160 seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
161 optval->string);
162 if (capable(CAP_NET_ADMIN)) {
163 seq_printf(seq, "System priority: %d\n",
164 BOND_AD_INFO(bond).system.sys_priority);
165 seq_printf(seq, "System MAC address: %pM\n",
166 &BOND_AD_INFO(bond).system.sys_mac_addr);
167
168 if (__bond_3ad_get_active_agg_info(bond, &ad_info)) {
169 seq_printf(seq,
170 "bond %s has no active aggregator\n",
171 bond->dev->name);
172 } else {
173 seq_printf(seq, "Active Aggregator Info:\n");
174
175 seq_printf(seq, "\tAggregator ID: %d\n",
176 ad_info.aggregator_id);
177 seq_printf(seq, "\tNumber of ports: %d\n",
178 ad_info.ports);
179 seq_printf(seq, "\tActor Key: %d\n",
180 ad_info.actor_key);
181 seq_printf(seq, "\tPartner Key: %d\n",
182 ad_info.partner_key);
183 seq_printf(seq, "\tPartner Mac Address: %pM\n",
184 ad_info.partner_system);
185 }
186 }
187 }
188 }
189
bond_info_show_slave(struct seq_file * seq,const struct slave * slave)190 static void bond_info_show_slave(struct seq_file *seq,
191 const struct slave *slave)
192 {
193 struct bonding *bond = pde_data(file_inode(seq->file));
194
195 seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
196 seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link));
197 if (slave->speed == SPEED_UNKNOWN)
198 seq_printf(seq, "Speed: %s\n", "Unknown");
199 else
200 seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
201
202 if (slave->duplex == DUPLEX_UNKNOWN)
203 seq_printf(seq, "Duplex: %s\n", "Unknown");
204 else
205 seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");
206
207 seq_printf(seq, "Link Failure Count: %u\n",
208 slave->link_failure_count);
209
210 seq_printf(seq, "Permanent HW addr: %*phC\n",
211 slave->dev->addr_len, slave->perm_hwaddr);
212 seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
213
214 if (BOND_MODE(bond) == BOND_MODE_8023AD) {
215 const struct port *port = &SLAVE_AD_INFO(slave)->port;
216 const struct aggregator *agg = port->aggregator;
217
218 if (agg) {
219 seq_printf(seq, "Aggregator ID: %d\n",
220 agg->aggregator_identifier);
221 seq_printf(seq, "Actor Churn State: %s\n",
222 bond_3ad_churn_desc(port->sm_churn_actor_state));
223 seq_printf(seq, "Partner Churn State: %s\n",
224 bond_3ad_churn_desc(port->sm_churn_partner_state));
225 seq_printf(seq, "Actor Churned Count: %d\n",
226 port->churn_actor_count);
227 seq_printf(seq, "Partner Churned Count: %d\n",
228 port->churn_partner_count);
229
230 if (capable(CAP_NET_ADMIN)) {
231 seq_puts(seq, "details actor lacp pdu:\n");
232 seq_printf(seq, " system priority: %d\n",
233 port->actor_system_priority);
234 seq_printf(seq, " system mac address: %pM\n",
235 &port->actor_system);
236 seq_printf(seq, " port key: %d\n",
237 port->actor_oper_port_key);
238 seq_printf(seq, " port priority: %d\n",
239 port->actor_port_priority);
240 seq_printf(seq, " port number: %d\n",
241 port->actor_port_number);
242 seq_printf(seq, " port state: %d\n",
243 port->actor_oper_port_state);
244
245 seq_puts(seq, "details partner lacp pdu:\n");
246 seq_printf(seq, " system priority: %d\n",
247 port->partner_oper.system_priority);
248 seq_printf(seq, " system mac address: %pM\n",
249 &port->partner_oper.system);
250 seq_printf(seq, " oper key: %d\n",
251 port->partner_oper.key);
252 seq_printf(seq, " port priority: %d\n",
253 port->partner_oper.port_priority);
254 seq_printf(seq, " port number: %d\n",
255 port->partner_oper.port_number);
256 seq_printf(seq, " port state: %d\n",
257 port->partner_oper.port_state);
258 }
259 } else {
260 seq_puts(seq, "Aggregator ID: N/A\n");
261 }
262 }
263 }
264
bond_info_seq_show(struct seq_file * seq,void * v)265 static int bond_info_seq_show(struct seq_file *seq, void *v)
266 {
267 if (v == SEQ_START_TOKEN) {
268 seq_printf(seq, "%s\n", bond_version);
269 bond_info_show_master(seq);
270 } else
271 bond_info_show_slave(seq, v);
272
273 return 0;
274 }
275
276 static const struct seq_operations bond_info_seq_ops = {
277 .start = bond_info_seq_start,
278 .next = bond_info_seq_next,
279 .stop = bond_info_seq_stop,
280 .show = bond_info_seq_show,
281 };
282
bond_create_proc_entry(struct bonding * bond)283 void bond_create_proc_entry(struct bonding *bond)
284 {
285 struct net_device *bond_dev = bond->dev;
286 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
287
288 if (bn->proc_dir) {
289 bond->proc_entry = proc_create_seq_data(bond_dev->name, 0444,
290 bn->proc_dir, &bond_info_seq_ops, bond);
291 if (bond->proc_entry == NULL)
292 netdev_warn(bond_dev, "Cannot create /proc/net/%s/%s\n",
293 DRV_NAME, bond_dev->name);
294 else
295 memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
296 }
297 }
298
bond_remove_proc_entry(struct bonding * bond)299 void bond_remove_proc_entry(struct bonding *bond)
300 {
301 struct net_device *bond_dev = bond->dev;
302 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
303
304 if (bn->proc_dir && bond->proc_entry) {
305 remove_proc_entry(bond->proc_file_name, bn->proc_dir);
306 memset(bond->proc_file_name, 0, IFNAMSIZ);
307 bond->proc_entry = NULL;
308 }
309 }
310
311 /* Create the bonding directory under /proc/net, if doesn't exist yet.
312 * Caller must hold rtnl_lock.
313 */
bond_create_proc_dir(struct bond_net * bn)314 void __net_init bond_create_proc_dir(struct bond_net *bn)
315 {
316 if (!bn->proc_dir) {
317 bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
318 if (!bn->proc_dir)
319 pr_warn("Warning: Cannot create /proc/net/%s\n",
320 DRV_NAME);
321 }
322 }
323
324 /* Destroy the bonding directory under /proc/net, if empty.
325 */
bond_destroy_proc_dir(struct bond_net * bn)326 void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
327 {
328 if (bn->proc_dir) {
329 remove_proc_entry(DRV_NAME, bn->net->proc_net);
330 bn->proc_dir = NULL;
331 }
332 }
333