1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/proc_fs.h> 3 #include <linux/export.h> 4 #include <net/net_namespace.h> 5 #include <net/netns/generic.h> 6 #include <net/bonding.h> 7 8 #include "bonding_priv.h" 9 10 static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos) 11 __acquires(RCU) 12 { 13 struct bonding *bond = PDE_DATA(file_inode(seq->file)); 14 struct list_head *iter; 15 struct slave *slave; 16 loff_t off = 0; 17 18 rcu_read_lock(); 19 20 if (*pos == 0) 21 return SEQ_START_TOKEN; 22 23 bond_for_each_slave_rcu(bond, slave, iter) 24 if (++off == *pos) 25 return slave; 26 27 return NULL; 28 } 29 30 static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) 31 { 32 struct bonding *bond = PDE_DATA(file_inode(seq->file)); 33 struct list_head *iter; 34 struct slave *slave; 35 bool found = false; 36 37 ++*pos; 38 if (v == SEQ_START_TOKEN) 39 return bond_first_slave_rcu(bond); 40 41 bond_for_each_slave_rcu(bond, slave, iter) { 42 if (found) 43 return slave; 44 if (slave == v) 45 found = true; 46 } 47 48 return NULL; 49 } 50 51 static void bond_info_seq_stop(struct seq_file *seq, void *v) 52 __releases(RCU) 53 { 54 rcu_read_unlock(); 55 } 56 57 static void bond_info_show_master(struct seq_file *seq) 58 { 59 struct bonding *bond = PDE_DATA(file_inode(seq->file)); 60 const struct bond_opt_value *optval; 61 struct slave *curr, *primary; 62 int i; 63 64 curr = rcu_dereference(bond->curr_active_slave); 65 66 seq_printf(seq, "Bonding Mode: %s", 67 bond_mode_name(BOND_MODE(bond))); 68 69 if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP && 70 bond->params.fail_over_mac) { 71 optval = bond_opt_get_val(BOND_OPT_FAIL_OVER_MAC, 72 bond->params.fail_over_mac); 73 seq_printf(seq, " (fail_over_mac %s)", optval->string); 74 } 75 76 seq_printf(seq, "\n"); 77 78 if (bond_mode_uses_xmit_hash(bond)) { 79 optval = bond_opt_get_val(BOND_OPT_XMIT_HASH, 80 bond->params.xmit_policy); 81 seq_printf(seq, "Transmit Hash Policy: %s (%d)\n", 82 optval->string, bond->params.xmit_policy); 83 } 84 85 if (bond_uses_primary(bond)) { 86 primary = rcu_dereference(bond->primary_slave); 87 seq_printf(seq, "Primary Slave: %s", 88 primary ? primary->dev->name : "None"); 89 if (primary) { 90 optval = bond_opt_get_val(BOND_OPT_PRIMARY_RESELECT, 91 bond->params.primary_reselect); 92 seq_printf(seq, " (primary_reselect %s)", 93 optval->string); 94 } 95 96 seq_printf(seq, "\nCurrently Active Slave: %s\n", 97 (curr) ? curr->dev->name : "None"); 98 } 99 100 seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ? 101 "up" : "down"); 102 seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon); 103 seq_printf(seq, "Up Delay (ms): %d\n", 104 bond->params.updelay * bond->params.miimon); 105 seq_printf(seq, "Down Delay (ms): %d\n", 106 bond->params.downdelay * bond->params.miimon); 107 108 109 /* ARP information */ 110 if (bond->params.arp_interval > 0) { 111 int printed = 0; 112 seq_printf(seq, "ARP Polling Interval (ms): %d\n", 113 bond->params.arp_interval); 114 115 seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); 116 117 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { 118 if (!bond->params.arp_targets[i]) 119 break; 120 if (printed) 121 seq_printf(seq, ","); 122 seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); 123 printed = 1; 124 } 125 seq_printf(seq, "\n"); 126 } 127 128 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 129 struct ad_info ad_info; 130 131 seq_puts(seq, "\n802.3ad info\n"); 132 seq_printf(seq, "LACP rate: %s\n", 133 (bond->params.lacp_fast) ? "fast" : "slow"); 134 seq_printf(seq, "Min links: %d\n", bond->params.min_links); 135 optval = bond_opt_get_val(BOND_OPT_AD_SELECT, 136 bond->params.ad_select); 137 seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", 138 optval->string); 139 if (capable(CAP_NET_ADMIN)) { 140 seq_printf(seq, "System priority: %d\n", 141 BOND_AD_INFO(bond).system.sys_priority); 142 seq_printf(seq, "System MAC address: %pM\n", 143 &BOND_AD_INFO(bond).system.sys_mac_addr); 144 145 if (__bond_3ad_get_active_agg_info(bond, &ad_info)) { 146 seq_printf(seq, 147 "bond %s has no active aggregator\n", 148 bond->dev->name); 149 } else { 150 seq_printf(seq, "Active Aggregator Info:\n"); 151 152 seq_printf(seq, "\tAggregator ID: %d\n", 153 ad_info.aggregator_id); 154 seq_printf(seq, "\tNumber of ports: %d\n", 155 ad_info.ports); 156 seq_printf(seq, "\tActor Key: %d\n", 157 ad_info.actor_key); 158 seq_printf(seq, "\tPartner Key: %d\n", 159 ad_info.partner_key); 160 seq_printf(seq, "\tPartner Mac Address: %pM\n", 161 ad_info.partner_system); 162 } 163 } 164 } 165 } 166 167 static void bond_info_show_slave(struct seq_file *seq, 168 const struct slave *slave) 169 { 170 struct bonding *bond = PDE_DATA(file_inode(seq->file)); 171 172 seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); 173 seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link)); 174 if (slave->speed == SPEED_UNKNOWN) 175 seq_printf(seq, "Speed: %s\n", "Unknown"); 176 else 177 seq_printf(seq, "Speed: %d Mbps\n", slave->speed); 178 179 if (slave->duplex == DUPLEX_UNKNOWN) 180 seq_printf(seq, "Duplex: %s\n", "Unknown"); 181 else 182 seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half"); 183 184 seq_printf(seq, "Link Failure Count: %u\n", 185 slave->link_failure_count); 186 187 seq_printf(seq, "Permanent HW addr: %*phC\n", 188 slave->dev->addr_len, slave->perm_hwaddr); 189 seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id); 190 191 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 192 const struct port *port = &SLAVE_AD_INFO(slave)->port; 193 const struct aggregator *agg = port->aggregator; 194 195 if (agg) { 196 seq_printf(seq, "Aggregator ID: %d\n", 197 agg->aggregator_identifier); 198 seq_printf(seq, "Actor Churn State: %s\n", 199 bond_3ad_churn_desc(port->sm_churn_actor_state)); 200 seq_printf(seq, "Partner Churn State: %s\n", 201 bond_3ad_churn_desc(port->sm_churn_partner_state)); 202 seq_printf(seq, "Actor Churned Count: %d\n", 203 port->churn_actor_count); 204 seq_printf(seq, "Partner Churned Count: %d\n", 205 port->churn_partner_count); 206 207 if (capable(CAP_NET_ADMIN)) { 208 seq_puts(seq, "details actor lacp pdu:\n"); 209 seq_printf(seq, " system priority: %d\n", 210 port->actor_system_priority); 211 seq_printf(seq, " system mac address: %pM\n", 212 &port->actor_system); 213 seq_printf(seq, " port key: %d\n", 214 port->actor_oper_port_key); 215 seq_printf(seq, " port priority: %d\n", 216 port->actor_port_priority); 217 seq_printf(seq, " port number: %d\n", 218 port->actor_port_number); 219 seq_printf(seq, " port state: %d\n", 220 port->actor_oper_port_state); 221 222 seq_puts(seq, "details partner lacp pdu:\n"); 223 seq_printf(seq, " system priority: %d\n", 224 port->partner_oper.system_priority); 225 seq_printf(seq, " system mac address: %pM\n", 226 &port->partner_oper.system); 227 seq_printf(seq, " oper key: %d\n", 228 port->partner_oper.key); 229 seq_printf(seq, " port priority: %d\n", 230 port->partner_oper.port_priority); 231 seq_printf(seq, " port number: %d\n", 232 port->partner_oper.port_number); 233 seq_printf(seq, " port state: %d\n", 234 port->partner_oper.port_state); 235 } 236 } else { 237 seq_puts(seq, "Aggregator ID: N/A\n"); 238 } 239 } 240 } 241 242 static int bond_info_seq_show(struct seq_file *seq, void *v) 243 { 244 if (v == SEQ_START_TOKEN) { 245 seq_printf(seq, "%s\n", bond_version); 246 bond_info_show_master(seq); 247 } else 248 bond_info_show_slave(seq, v); 249 250 return 0; 251 } 252 253 static const struct seq_operations bond_info_seq_ops = { 254 .start = bond_info_seq_start, 255 .next = bond_info_seq_next, 256 .stop = bond_info_seq_stop, 257 .show = bond_info_seq_show, 258 }; 259 260 void bond_create_proc_entry(struct bonding *bond) 261 { 262 struct net_device *bond_dev = bond->dev; 263 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 264 265 if (bn->proc_dir) { 266 bond->proc_entry = proc_create_seq_data(bond_dev->name, 0444, 267 bn->proc_dir, &bond_info_seq_ops, bond); 268 if (bond->proc_entry == NULL) 269 netdev_warn(bond_dev, "Cannot create /proc/net/%s/%s\n", 270 DRV_NAME, bond_dev->name); 271 else 272 memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); 273 } 274 } 275 276 void bond_remove_proc_entry(struct bonding *bond) 277 { 278 struct net_device *bond_dev = bond->dev; 279 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 280 281 if (bn->proc_dir && bond->proc_entry) { 282 remove_proc_entry(bond->proc_file_name, bn->proc_dir); 283 memset(bond->proc_file_name, 0, IFNAMSIZ); 284 bond->proc_entry = NULL; 285 } 286 } 287 288 /* Create the bonding directory under /proc/net, if doesn't exist yet. 289 * Caller must hold rtnl_lock. 290 */ 291 void __net_init bond_create_proc_dir(struct bond_net *bn) 292 { 293 if (!bn->proc_dir) { 294 bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net); 295 if (!bn->proc_dir) 296 pr_warn("Warning: Cannot create /proc/net/%s\n", 297 DRV_NAME); 298 } 299 } 300 301 /* Destroy the bonding directory under /proc/net, if empty. 302 * Caller must hold rtnl_lock. 303 */ 304 void __net_exit bond_destroy_proc_dir(struct bond_net *bn) 305 { 306 if (bn->proc_dir) { 307 remove_proc_entry(DRV_NAME, bn->net->proc_net); 308 bn->proc_dir = NULL; 309 } 310 } 311