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