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 seq_printf(seq, "Peer Notification Delay (ms): %d\n", 108 bond->params.peer_notif_delay * bond->params.miimon); 109 110 111 /* ARP information */ 112 if (bond->params.arp_interval > 0) { 113 int printed = 0; 114 seq_printf(seq, "ARP Polling Interval (ms): %d\n", 115 bond->params.arp_interval); 116 117 seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); 118 119 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { 120 if (!bond->params.arp_targets[i]) 121 break; 122 if (printed) 123 seq_printf(seq, ","); 124 seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); 125 printed = 1; 126 } 127 seq_printf(seq, "\n"); 128 } 129 130 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 131 struct ad_info ad_info; 132 133 seq_puts(seq, "\n802.3ad info\n"); 134 seq_printf(seq, "LACP rate: %s\n", 135 (bond->params.lacp_fast) ? "fast" : "slow"); 136 seq_printf(seq, "Min links: %d\n", bond->params.min_links); 137 optval = bond_opt_get_val(BOND_OPT_AD_SELECT, 138 bond->params.ad_select); 139 seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", 140 optval->string); 141 if (capable(CAP_NET_ADMIN)) { 142 seq_printf(seq, "System priority: %d\n", 143 BOND_AD_INFO(bond).system.sys_priority); 144 seq_printf(seq, "System MAC address: %pM\n", 145 &BOND_AD_INFO(bond).system.sys_mac_addr); 146 147 if (__bond_3ad_get_active_agg_info(bond, &ad_info)) { 148 seq_printf(seq, 149 "bond %s has no active aggregator\n", 150 bond->dev->name); 151 } else { 152 seq_printf(seq, "Active Aggregator Info:\n"); 153 154 seq_printf(seq, "\tAggregator ID: %d\n", 155 ad_info.aggregator_id); 156 seq_printf(seq, "\tNumber of ports: %d\n", 157 ad_info.ports); 158 seq_printf(seq, "\tActor Key: %d\n", 159 ad_info.actor_key); 160 seq_printf(seq, "\tPartner Key: %d\n", 161 ad_info.partner_key); 162 seq_printf(seq, "\tPartner Mac Address: %pM\n", 163 ad_info.partner_system); 164 } 165 } 166 } 167 } 168 169 static void bond_info_show_slave(struct seq_file *seq, 170 const struct slave *slave) 171 { 172 struct bonding *bond = PDE_DATA(file_inode(seq->file)); 173 174 seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); 175 seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link)); 176 if (slave->speed == SPEED_UNKNOWN) 177 seq_printf(seq, "Speed: %s\n", "Unknown"); 178 else 179 seq_printf(seq, "Speed: %d Mbps\n", slave->speed); 180 181 if (slave->duplex == DUPLEX_UNKNOWN) 182 seq_printf(seq, "Duplex: %s\n", "Unknown"); 183 else 184 seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half"); 185 186 seq_printf(seq, "Link Failure Count: %u\n", 187 slave->link_failure_count); 188 189 seq_printf(seq, "Permanent HW addr: %*phC\n", 190 slave->dev->addr_len, slave->perm_hwaddr); 191 seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id); 192 193 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 194 const struct port *port = &SLAVE_AD_INFO(slave)->port; 195 const struct aggregator *agg = port->aggregator; 196 197 if (agg) { 198 seq_printf(seq, "Aggregator ID: %d\n", 199 agg->aggregator_identifier); 200 seq_printf(seq, "Actor Churn State: %s\n", 201 bond_3ad_churn_desc(port->sm_churn_actor_state)); 202 seq_printf(seq, "Partner Churn State: %s\n", 203 bond_3ad_churn_desc(port->sm_churn_partner_state)); 204 seq_printf(seq, "Actor Churned Count: %d\n", 205 port->churn_actor_count); 206 seq_printf(seq, "Partner Churned Count: %d\n", 207 port->churn_partner_count); 208 209 if (capable(CAP_NET_ADMIN)) { 210 seq_puts(seq, "details actor lacp pdu:\n"); 211 seq_printf(seq, " system priority: %d\n", 212 port->actor_system_priority); 213 seq_printf(seq, " system mac address: %pM\n", 214 &port->actor_system); 215 seq_printf(seq, " port key: %d\n", 216 port->actor_oper_port_key); 217 seq_printf(seq, " port priority: %d\n", 218 port->actor_port_priority); 219 seq_printf(seq, " port number: %d\n", 220 port->actor_port_number); 221 seq_printf(seq, " port state: %d\n", 222 port->actor_oper_port_state); 223 224 seq_puts(seq, "details partner lacp pdu:\n"); 225 seq_printf(seq, " system priority: %d\n", 226 port->partner_oper.system_priority); 227 seq_printf(seq, " system mac address: %pM\n", 228 &port->partner_oper.system); 229 seq_printf(seq, " oper key: %d\n", 230 port->partner_oper.key); 231 seq_printf(seq, " port priority: %d\n", 232 port->partner_oper.port_priority); 233 seq_printf(seq, " port number: %d\n", 234 port->partner_oper.port_number); 235 seq_printf(seq, " port state: %d\n", 236 port->partner_oper.port_state); 237 } 238 } else { 239 seq_puts(seq, "Aggregator ID: N/A\n"); 240 } 241 } 242 } 243 244 static int bond_info_seq_show(struct seq_file *seq, void *v) 245 { 246 if (v == SEQ_START_TOKEN) { 247 seq_printf(seq, "%s\n", bond_version); 248 bond_info_show_master(seq); 249 } else 250 bond_info_show_slave(seq, v); 251 252 return 0; 253 } 254 255 static const struct seq_operations bond_info_seq_ops = { 256 .start = bond_info_seq_start, 257 .next = bond_info_seq_next, 258 .stop = bond_info_seq_stop, 259 .show = bond_info_seq_show, 260 }; 261 262 void bond_create_proc_entry(struct bonding *bond) 263 { 264 struct net_device *bond_dev = bond->dev; 265 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 266 267 if (bn->proc_dir) { 268 bond->proc_entry = proc_create_seq_data(bond_dev->name, 0444, 269 bn->proc_dir, &bond_info_seq_ops, bond); 270 if (bond->proc_entry == NULL) 271 netdev_warn(bond_dev, "Cannot create /proc/net/%s/%s\n", 272 DRV_NAME, bond_dev->name); 273 else 274 memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); 275 } 276 } 277 278 void bond_remove_proc_entry(struct bonding *bond) 279 { 280 struct net_device *bond_dev = bond->dev; 281 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 282 283 if (bn->proc_dir && bond->proc_entry) { 284 remove_proc_entry(bond->proc_file_name, bn->proc_dir); 285 memset(bond->proc_file_name, 0, IFNAMSIZ); 286 bond->proc_entry = NULL; 287 } 288 } 289 290 /* Create the bonding directory under /proc/net, if doesn't exist yet. 291 * Caller must hold rtnl_lock. 292 */ 293 void __net_init bond_create_proc_dir(struct bond_net *bn) 294 { 295 if (!bn->proc_dir) { 296 bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net); 297 if (!bn->proc_dir) 298 pr_warn("Warning: Cannot create /proc/net/%s\n", 299 DRV_NAME); 300 } 301 } 302 303 /* Destroy the bonding directory under /proc/net, if empty. 304 * Caller must hold rtnl_lock. 305 */ 306 void __net_exit bond_destroy_proc_dir(struct bond_net *bn) 307 { 308 if (bn->proc_dir) { 309 remove_proc_entry(DRV_NAME, bn->net->proc_net); 310 bn->proc_dir = NULL; 311 } 312 } 313