1 #include <linux/proc_fs.h>
2 #include <linux/export.h>
3 #include <net/net_namespace.h>
4 #include <net/netns/generic.h>
8 static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos)
10 __acquires(&bond->lock)
12 struct bonding *bond = seq->private;
13 struct list_head *iter;
17 /* make sure the bond won't be taken away */
19 read_lock(&bond->lock);
22 return SEQ_START_TOKEN;
24 bond_for_each_slave(bond, slave, iter)
31 static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos)
33 struct bonding *bond = seq->private;
34 struct list_head *iter;
39 if (v == SEQ_START_TOKEN)
40 return bond_first_slave(bond);
42 if (bond_is_last_slave(bond, v))
45 bond_for_each_slave(bond, slave, iter) {
55 static void bond_info_seq_stop(struct seq_file *seq, void *v)
56 __releases(&bond->lock)
59 struct bonding *bond = seq->private;
61 read_unlock(&bond->lock);
65 static void bond_info_show_master(struct seq_file *seq)
67 struct bonding *bond = seq->private;
68 const struct bond_opt_value *optval;
72 curr = rcu_dereference(bond->curr_active_slave);
74 seq_printf(seq, "Bonding Mode: %s",
75 bond_mode_name(BOND_MODE(bond)));
77 if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP &&
78 bond->params.fail_over_mac) {
79 optval = bond_opt_get_val(BOND_OPT_FAIL_OVER_MAC,
80 bond->params.fail_over_mac);
81 seq_printf(seq, " (fail_over_mac %s)", optval->string);
84 seq_printf(seq, "\n");
86 if (BOND_MODE(bond) == BOND_MODE_XOR ||
87 BOND_MODE(bond) == BOND_MODE_8023AD) {
88 optval = bond_opt_get_val(BOND_OPT_XMIT_HASH,
89 bond->params.xmit_policy);
90 seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
91 optval->string, bond->params.xmit_policy);
94 if (bond_uses_primary(bond)) {
95 seq_printf(seq, "Primary Slave: %s",
96 (bond->primary_slave) ?
97 bond->primary_slave->dev->name : "None");
98 if (bond->primary_slave) {
99 optval = bond_opt_get_val(BOND_OPT_PRIMARY_RESELECT,
100 bond->params.primary_reselect);
101 seq_printf(seq, " (primary_reselect %s)",
105 seq_printf(seq, "\nCurrently Active Slave: %s\n",
106 (curr) ? curr->dev->name : "None");
109 seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ?
111 seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon);
112 seq_printf(seq, "Up Delay (ms): %d\n",
113 bond->params.updelay * bond->params.miimon);
114 seq_printf(seq, "Down Delay (ms): %d\n",
115 bond->params.downdelay * bond->params.miimon);
118 /* ARP information */
119 if (bond->params.arp_interval > 0) {
121 seq_printf(seq, "ARP Polling Interval (ms): %d\n",
122 bond->params.arp_interval);
124 seq_printf(seq, "ARP IP target/s (n.n.n.n form):");
126 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
127 if (!bond->params.arp_targets[i])
130 seq_printf(seq, ",");
131 seq_printf(seq, " %pI4", &bond->params.arp_targets[i]);
134 seq_printf(seq, "\n");
137 if (BOND_MODE(bond) == BOND_MODE_8023AD) {
138 struct ad_info ad_info;
140 seq_puts(seq, "\n802.3ad info\n");
141 seq_printf(seq, "LACP rate: %s\n",
142 (bond->params.lacp_fast) ? "fast" : "slow");
143 seq_printf(seq, "Min links: %d\n", bond->params.min_links);
144 optval = bond_opt_get_val(BOND_OPT_AD_SELECT,
145 bond->params.ad_select);
146 seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
149 if (__bond_3ad_get_active_agg_info(bond, &ad_info)) {
150 seq_printf(seq, "bond %s has no active aggregator\n",
153 seq_printf(seq, "Active Aggregator Info:\n");
155 seq_printf(seq, "\tAggregator ID: %d\n",
156 ad_info.aggregator_id);
157 seq_printf(seq, "\tNumber of ports: %d\n",
159 seq_printf(seq, "\tActor Key: %d\n",
161 seq_printf(seq, "\tPartner Key: %d\n",
162 ad_info.partner_key);
163 seq_printf(seq, "\tPartner Mac Address: %pM\n",
164 ad_info.partner_system);
169 static void bond_info_show_slave(struct seq_file *seq,
170 const struct slave *slave)
172 struct bonding *bond = seq->private;
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");
179 seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
181 if (slave->duplex == DUPLEX_UNKNOWN)
182 seq_printf(seq, "Duplex: %s\n", "Unknown");
184 seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");
186 seq_printf(seq, "Link Failure Count: %u\n",
187 slave->link_failure_count);
189 seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr);
191 if (BOND_MODE(bond) == BOND_MODE_8023AD) {
192 const struct aggregator *agg
193 = SLAVE_AD_INFO(slave)->port.aggregator;
196 seq_printf(seq, "Aggregator ID: %d\n",
197 agg->aggregator_identifier);
199 seq_puts(seq, "Aggregator ID: N/A\n");
201 seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
204 static int bond_info_seq_show(struct seq_file *seq, void *v)
206 if (v == SEQ_START_TOKEN) {
207 seq_printf(seq, "%s\n", bond_version);
208 bond_info_show_master(seq);
210 bond_info_show_slave(seq, v);
215 static const struct seq_operations bond_info_seq_ops = {
216 .start = bond_info_seq_start,
217 .next = bond_info_seq_next,
218 .stop = bond_info_seq_stop,
219 .show = bond_info_seq_show,
222 static int bond_info_open(struct inode *inode, struct file *file)
224 struct seq_file *seq;
227 res = seq_open(file, &bond_info_seq_ops);
229 /* recover the pointer buried in proc_dir_entry data */
230 seq = file->private_data;
231 seq->private = PDE_DATA(inode);
237 static const struct file_operations bond_info_fops = {
238 .owner = THIS_MODULE,
239 .open = bond_info_open,
242 .release = seq_release,
245 void bond_create_proc_entry(struct bonding *bond)
247 struct net_device *bond_dev = bond->dev;
248 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
251 bond->proc_entry = proc_create_data(bond_dev->name,
252 S_IRUGO, bn->proc_dir,
253 &bond_info_fops, bond);
254 if (bond->proc_entry == NULL)
255 netdev_warn(bond_dev, "Cannot create /proc/net/%s/%s\n",
256 DRV_NAME, bond_dev->name);
258 memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
262 void bond_remove_proc_entry(struct bonding *bond)
264 struct net_device *bond_dev = bond->dev;
265 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
267 if (bn->proc_dir && bond->proc_entry) {
268 remove_proc_entry(bond->proc_file_name, bn->proc_dir);
269 memset(bond->proc_file_name, 0, IFNAMSIZ);
270 bond->proc_entry = NULL;
274 /* Create the bonding directory under /proc/net, if doesn't exist yet.
275 * Caller must hold rtnl_lock.
277 void __net_init bond_create_proc_dir(struct bond_net *bn)
280 bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
282 pr_warn("Warning: Cannot create /proc/net/%s\n",
287 /* Destroy the bonding directory under /proc/net, if empty.
288 * Caller must hold rtnl_lock.
290 void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
293 remove_proc_entry(DRV_NAME, bn->net->proc_net);