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 if (capable(CAP_NET_ADMIN)) { 139 seq_printf(seq, "System priority: %d\n", 140 BOND_AD_INFO(bond).system.sys_priority); 141 seq_printf(seq, "System MAC address: %pM\n", 142 &BOND_AD_INFO(bond).system.sys_mac_addr); 143 144 if (__bond_3ad_get_active_agg_info(bond, &ad_info)) { 145 seq_printf(seq, 146 "bond %s has no active aggregator\n", 147 bond->dev->name); 148 } else { 149 seq_printf(seq, "Active Aggregator Info:\n"); 150 151 seq_printf(seq, "\tAggregator ID: %d\n", 152 ad_info.aggregator_id); 153 seq_printf(seq, "\tNumber of ports: %d\n", 154 ad_info.ports); 155 seq_printf(seq, "\tActor Key: %d\n", 156 ad_info.actor_key); 157 seq_printf(seq, "\tPartner Key: %d\n", 158 ad_info.partner_key); 159 seq_printf(seq, "\tPartner Mac Address: %pM\n", 160 ad_info.partner_system); 161 } 162 } 163 } 164 } 165 166 static void bond_info_show_slave(struct seq_file *seq, 167 const struct slave *slave) 168 { 169 struct bonding *bond = seq->private; 170 171 seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); 172 seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link)); 173 if (slave->speed == SPEED_UNKNOWN) 174 seq_printf(seq, "Speed: %s\n", "Unknown"); 175 else 176 seq_printf(seq, "Speed: %d Mbps\n", slave->speed); 177 178 if (slave->duplex == DUPLEX_UNKNOWN) 179 seq_printf(seq, "Duplex: %s\n", "Unknown"); 180 else 181 seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half"); 182 183 seq_printf(seq, "Link Failure Count: %u\n", 184 slave->link_failure_count); 185 186 seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr); 187 seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id); 188 189 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 190 const struct port *port = &SLAVE_AD_INFO(slave)->port; 191 const struct aggregator *agg = port->aggregator; 192 193 if (agg) { 194 seq_printf(seq, "Aggregator ID: %d\n", 195 agg->aggregator_identifier); 196 seq_printf(seq, "Actor Churn State: %s\n", 197 bond_3ad_churn_desc(port->sm_churn_actor_state)); 198 seq_printf(seq, "Partner Churn State: %s\n", 199 bond_3ad_churn_desc(port->sm_churn_partner_state)); 200 seq_printf(seq, "Actor Churned Count: %d\n", 201 port->churn_actor_count); 202 seq_printf(seq, "Partner Churned Count: %d\n", 203 port->churn_partner_count); 204 205 if (capable(CAP_NET_ADMIN)) { 206 seq_puts(seq, "details actor lacp pdu:\n"); 207 seq_printf(seq, " system priority: %d\n", 208 port->actor_system_priority); 209 seq_printf(seq, " system mac address: %pM\n", 210 &port->actor_system); 211 seq_printf(seq, " port key: %d\n", 212 port->actor_oper_port_key); 213 seq_printf(seq, " port priority: %d\n", 214 port->actor_port_priority); 215 seq_printf(seq, " port number: %d\n", 216 port->actor_port_number); 217 seq_printf(seq, " port state: %d\n", 218 port->actor_oper_port_state); 219 220 seq_puts(seq, "details partner lacp pdu:\n"); 221 seq_printf(seq, " system priority: %d\n", 222 port->partner_oper.system_priority); 223 seq_printf(seq, " system mac address: %pM\n", 224 &port->partner_oper.system); 225 seq_printf(seq, " oper key: %d\n", 226 port->partner_oper.key); 227 seq_printf(seq, " port priority: %d\n", 228 port->partner_oper.port_priority); 229 seq_printf(seq, " port number: %d\n", 230 port->partner_oper.port_number); 231 seq_printf(seq, " port state: %d\n", 232 port->partner_oper.port_state); 233 } 234 } else { 235 seq_puts(seq, "Aggregator ID: N/A\n"); 236 } 237 } 238 } 239 240 static int bond_info_seq_show(struct seq_file *seq, void *v) 241 { 242 if (v == SEQ_START_TOKEN) { 243 seq_printf(seq, "%s\n", bond_version); 244 bond_info_show_master(seq); 245 } else 246 bond_info_show_slave(seq, v); 247 248 return 0; 249 } 250 251 static const struct seq_operations bond_info_seq_ops = { 252 .start = bond_info_seq_start, 253 .next = bond_info_seq_next, 254 .stop = bond_info_seq_stop, 255 .show = bond_info_seq_show, 256 }; 257 258 static int bond_info_open(struct inode *inode, struct file *file) 259 { 260 struct seq_file *seq; 261 int res; 262 263 res = seq_open(file, &bond_info_seq_ops); 264 if (!res) { 265 /* recover the pointer buried in proc_dir_entry data */ 266 seq = file->private_data; 267 seq->private = PDE_DATA(inode); 268 } 269 270 return res; 271 } 272 273 static const struct file_operations bond_info_fops = { 274 .owner = THIS_MODULE, 275 .open = bond_info_open, 276 .read = seq_read, 277 .llseek = seq_lseek, 278 .release = seq_release, 279 }; 280 281 void bond_create_proc_entry(struct bonding *bond) 282 { 283 struct net_device *bond_dev = bond->dev; 284 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 285 286 if (bn->proc_dir) { 287 bond->proc_entry = proc_create_data(bond_dev->name, 288 S_IRUGO, bn->proc_dir, 289 &bond_info_fops, bond); 290 if (bond->proc_entry == NULL) 291 netdev_warn(bond_dev, "Cannot create /proc/net/%s/%s\n", 292 DRV_NAME, bond_dev->name); 293 else 294 memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); 295 } 296 } 297 298 void bond_remove_proc_entry(struct bonding *bond) 299 { 300 struct net_device *bond_dev = bond->dev; 301 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 302 303 if (bn->proc_dir && bond->proc_entry) { 304 remove_proc_entry(bond->proc_file_name, bn->proc_dir); 305 memset(bond->proc_file_name, 0, IFNAMSIZ); 306 bond->proc_entry = NULL; 307 } 308 } 309 310 /* Create the bonding directory under /proc/net, if doesn't exist yet. 311 * Caller must hold rtnl_lock. 312 */ 313 void __net_init bond_create_proc_dir(struct bond_net *bn) 314 { 315 if (!bn->proc_dir) { 316 bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net); 317 if (!bn->proc_dir) 318 pr_warn("Warning: Cannot create /proc/net/%s\n", 319 DRV_NAME); 320 } 321 } 322 323 /* Destroy the bonding directory under /proc/net, if empty. 324 * Caller must hold rtnl_lock. 325 */ 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