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 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 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 52 static void bond_info_seq_stop(struct seq_file *seq, void *v) 53 __releases(RCU) 54 { 55 rcu_read_unlock(); 56 } 57 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 } 189 190 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 } 264 265 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 }; 282 283 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 } 298 299 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 */ 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 */ 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