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 } 133 134 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 135 struct ad_info ad_info; 136 137 seq_puts(seq, "\n802.3ad info\n"); 138 seq_printf(seq, "LACP active: %s\n", 139 (bond->params.lacp_active) ? "on" : "off"); 140 seq_printf(seq, "LACP rate: %s\n", 141 (bond->params.lacp_fast) ? "fast" : "slow"); 142 seq_printf(seq, "Min links: %d\n", bond->params.min_links); 143 optval = bond_opt_get_val(BOND_OPT_AD_SELECT, 144 bond->params.ad_select); 145 seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", 146 optval->string); 147 if (capable(CAP_NET_ADMIN)) { 148 seq_printf(seq, "System priority: %d\n", 149 BOND_AD_INFO(bond).system.sys_priority); 150 seq_printf(seq, "System MAC address: %pM\n", 151 &BOND_AD_INFO(bond).system.sys_mac_addr); 152 153 if (__bond_3ad_get_active_agg_info(bond, &ad_info)) { 154 seq_printf(seq, 155 "bond %s has no active aggregator\n", 156 bond->dev->name); 157 } else { 158 seq_printf(seq, "Active Aggregator Info:\n"); 159 160 seq_printf(seq, "\tAggregator ID: %d\n", 161 ad_info.aggregator_id); 162 seq_printf(seq, "\tNumber of ports: %d\n", 163 ad_info.ports); 164 seq_printf(seq, "\tActor Key: %d\n", 165 ad_info.actor_key); 166 seq_printf(seq, "\tPartner Key: %d\n", 167 ad_info.partner_key); 168 seq_printf(seq, "\tPartner Mac Address: %pM\n", 169 ad_info.partner_system); 170 } 171 } 172 } 173 } 174 175 static void bond_info_show_slave(struct seq_file *seq, 176 const struct slave *slave) 177 { 178 struct bonding *bond = PDE_DATA(file_inode(seq->file)); 179 180 seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); 181 seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link)); 182 if (slave->speed == SPEED_UNKNOWN) 183 seq_printf(seq, "Speed: %s\n", "Unknown"); 184 else 185 seq_printf(seq, "Speed: %d Mbps\n", slave->speed); 186 187 if (slave->duplex == DUPLEX_UNKNOWN) 188 seq_printf(seq, "Duplex: %s\n", "Unknown"); 189 else 190 seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half"); 191 192 seq_printf(seq, "Link Failure Count: %u\n", 193 slave->link_failure_count); 194 195 seq_printf(seq, "Permanent HW addr: %*phC\n", 196 slave->dev->addr_len, slave->perm_hwaddr); 197 seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id); 198 199 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 200 const struct port *port = &SLAVE_AD_INFO(slave)->port; 201 const struct aggregator *agg = port->aggregator; 202 203 if (agg) { 204 seq_printf(seq, "Aggregator ID: %d\n", 205 agg->aggregator_identifier); 206 seq_printf(seq, "Actor Churn State: %s\n", 207 bond_3ad_churn_desc(port->sm_churn_actor_state)); 208 seq_printf(seq, "Partner Churn State: %s\n", 209 bond_3ad_churn_desc(port->sm_churn_partner_state)); 210 seq_printf(seq, "Actor Churned Count: %d\n", 211 port->churn_actor_count); 212 seq_printf(seq, "Partner Churned Count: %d\n", 213 port->churn_partner_count); 214 215 if (capable(CAP_NET_ADMIN)) { 216 seq_puts(seq, "details actor lacp pdu:\n"); 217 seq_printf(seq, " system priority: %d\n", 218 port->actor_system_priority); 219 seq_printf(seq, " system mac address: %pM\n", 220 &port->actor_system); 221 seq_printf(seq, " port key: %d\n", 222 port->actor_oper_port_key); 223 seq_printf(seq, " port priority: %d\n", 224 port->actor_port_priority); 225 seq_printf(seq, " port number: %d\n", 226 port->actor_port_number); 227 seq_printf(seq, " port state: %d\n", 228 port->actor_oper_port_state); 229 230 seq_puts(seq, "details partner lacp pdu:\n"); 231 seq_printf(seq, " system priority: %d\n", 232 port->partner_oper.system_priority); 233 seq_printf(seq, " system mac address: %pM\n", 234 &port->partner_oper.system); 235 seq_printf(seq, " oper key: %d\n", 236 port->partner_oper.key); 237 seq_printf(seq, " port priority: %d\n", 238 port->partner_oper.port_priority); 239 seq_printf(seq, " port number: %d\n", 240 port->partner_oper.port_number); 241 seq_printf(seq, " port state: %d\n", 242 port->partner_oper.port_state); 243 } 244 } else { 245 seq_puts(seq, "Aggregator ID: N/A\n"); 246 } 247 } 248 } 249 250 static int bond_info_seq_show(struct seq_file *seq, void *v) 251 { 252 if (v == SEQ_START_TOKEN) { 253 seq_printf(seq, "%s\n", bond_version); 254 bond_info_show_master(seq); 255 } else 256 bond_info_show_slave(seq, v); 257 258 return 0; 259 } 260 261 static const struct seq_operations bond_info_seq_ops = { 262 .start = bond_info_seq_start, 263 .next = bond_info_seq_next, 264 .stop = bond_info_seq_stop, 265 .show = bond_info_seq_show, 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_seq_data(bond_dev->name, 0444, 275 bn->proc_dir, &bond_info_seq_ops, bond); 276 if (bond->proc_entry == NULL) 277 netdev_warn(bond_dev, "Cannot create /proc/net/%s/%s\n", 278 DRV_NAME, bond_dev->name); 279 else 280 memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); 281 } 282 } 283 284 void bond_remove_proc_entry(struct bonding *bond) 285 { 286 struct net_device *bond_dev = bond->dev; 287 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 288 289 if (bn->proc_dir && bond->proc_entry) { 290 remove_proc_entry(bond->proc_file_name, bn->proc_dir); 291 memset(bond->proc_file_name, 0, IFNAMSIZ); 292 bond->proc_entry = NULL; 293 } 294 } 295 296 /* Create the bonding directory under /proc/net, if doesn't exist yet. 297 * Caller must hold rtnl_lock. 298 */ 299 void __net_init bond_create_proc_dir(struct bond_net *bn) 300 { 301 if (!bn->proc_dir) { 302 bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net); 303 if (!bn->proc_dir) 304 pr_warn("Warning: Cannot create /proc/net/%s\n", 305 DRV_NAME); 306 } 307 } 308 309 /* Destroy the bonding directory under /proc/net, if empty. 310 * Caller must hold rtnl_lock. 311 */ 312 void __net_exit bond_destroy_proc_dir(struct bond_net *bn) 313 { 314 if (bn->proc_dir) { 315 remove_proc_entry(DRV_NAME, bn->net->proc_net); 316 bn->proc_dir = NULL; 317 } 318 } 319