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); 118 119 seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); 120 121 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { 122 if (!bond->params.arp_targets[i]) 123 break; 124 if (printed) 125 seq_printf(seq, ","); 126 seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); 127 printed = 1; 128 } 129 seq_printf(seq, "\n"); 130 } 131 132 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 133 struct ad_info ad_info; 134 135 seq_puts(seq, "\n802.3ad info\n"); 136 seq_printf(seq, "LACP rate: %s\n", 137 (bond->params.lacp_fast) ? "fast" : "slow"); 138 seq_printf(seq, "Min links: %d\n", bond->params.min_links); 139 optval = bond_opt_get_val(BOND_OPT_AD_SELECT, 140 bond->params.ad_select); 141 seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", 142 optval->string); 143 if (capable(CAP_NET_ADMIN)) { 144 seq_printf(seq, "System priority: %d\n", 145 BOND_AD_INFO(bond).system.sys_priority); 146 seq_printf(seq, "System MAC address: %pM\n", 147 &BOND_AD_INFO(bond).system.sys_mac_addr); 148 149 if (__bond_3ad_get_active_agg_info(bond, &ad_info)) { 150 seq_printf(seq, 151 "bond %s has no active aggregator\n", 152 bond->dev->name); 153 } else { 154 seq_printf(seq, "Active Aggregator Info:\n"); 155 156 seq_printf(seq, "\tAggregator ID: %d\n", 157 ad_info.aggregator_id); 158 seq_printf(seq, "\tNumber of ports: %d\n", 159 ad_info.ports); 160 seq_printf(seq, "\tActor Key: %d\n", 161 ad_info.actor_key); 162 seq_printf(seq, "\tPartner Key: %d\n", 163 ad_info.partner_key); 164 seq_printf(seq, "\tPartner Mac Address: %pM\n", 165 ad_info.partner_system); 166 } 167 } 168 } 169 } 170 171 static void bond_info_show_slave(struct seq_file *seq, 172 const struct slave *slave) 173 { 174 struct bonding *bond = PDE_DATA(file_inode(seq->file)); 175 176 seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); 177 seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link)); 178 if (slave->speed == SPEED_UNKNOWN) 179 seq_printf(seq, "Speed: %s\n", "Unknown"); 180 else 181 seq_printf(seq, "Speed: %d Mbps\n", slave->speed); 182 183 if (slave->duplex == DUPLEX_UNKNOWN) 184 seq_printf(seq, "Duplex: %s\n", "Unknown"); 185 else 186 seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half"); 187 188 seq_printf(seq, "Link Failure Count: %u\n", 189 slave->link_failure_count); 190 191 seq_printf(seq, "Permanent HW addr: %*phC\n", 192 slave->dev->addr_len, slave->perm_hwaddr); 193 seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id); 194 195 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 196 const struct port *port = &SLAVE_AD_INFO(slave)->port; 197 const struct aggregator *agg = port->aggregator; 198 199 if (agg) { 200 seq_printf(seq, "Aggregator ID: %d\n", 201 agg->aggregator_identifier); 202 seq_printf(seq, "Actor Churn State: %s\n", 203 bond_3ad_churn_desc(port->sm_churn_actor_state)); 204 seq_printf(seq, "Partner Churn State: %s\n", 205 bond_3ad_churn_desc(port->sm_churn_partner_state)); 206 seq_printf(seq, "Actor Churned Count: %d\n", 207 port->churn_actor_count); 208 seq_printf(seq, "Partner Churned Count: %d\n", 209 port->churn_partner_count); 210 211 if (capable(CAP_NET_ADMIN)) { 212 seq_puts(seq, "details actor lacp pdu:\n"); 213 seq_printf(seq, " system priority: %d\n", 214 port->actor_system_priority); 215 seq_printf(seq, " system mac address: %pM\n", 216 &port->actor_system); 217 seq_printf(seq, " port key: %d\n", 218 port->actor_oper_port_key); 219 seq_printf(seq, " port priority: %d\n", 220 port->actor_port_priority); 221 seq_printf(seq, " port number: %d\n", 222 port->actor_port_number); 223 seq_printf(seq, " port state: %d\n", 224 port->actor_oper_port_state); 225 226 seq_puts(seq, "details partner lacp pdu:\n"); 227 seq_printf(seq, " system priority: %d\n", 228 port->partner_oper.system_priority); 229 seq_printf(seq, " system mac address: %pM\n", 230 &port->partner_oper.system); 231 seq_printf(seq, " oper key: %d\n", 232 port->partner_oper.key); 233 seq_printf(seq, " port priority: %d\n", 234 port->partner_oper.port_priority); 235 seq_printf(seq, " port number: %d\n", 236 port->partner_oper.port_number); 237 seq_printf(seq, " port state: %d\n", 238 port->partner_oper.port_state); 239 } 240 } else { 241 seq_puts(seq, "Aggregator ID: N/A\n"); 242 } 243 } 244 } 245 246 static int bond_info_seq_show(struct seq_file *seq, void *v) 247 { 248 if (v == SEQ_START_TOKEN) { 249 seq_printf(seq, "%s\n", bond_version); 250 bond_info_show_master(seq); 251 } else 252 bond_info_show_slave(seq, v); 253 254 return 0; 255 } 256 257 static const struct seq_operations bond_info_seq_ops = { 258 .start = bond_info_seq_start, 259 .next = bond_info_seq_next, 260 .stop = bond_info_seq_stop, 261 .show = bond_info_seq_show, 262 }; 263 264 void bond_create_proc_entry(struct bonding *bond) 265 { 266 struct net_device *bond_dev = bond->dev; 267 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 268 269 if (bn->proc_dir) { 270 bond->proc_entry = proc_create_seq_data(bond_dev->name, 0444, 271 bn->proc_dir, &bond_info_seq_ops, bond); 272 if (bond->proc_entry == NULL) 273 netdev_warn(bond_dev, "Cannot create /proc/net/%s/%s\n", 274 DRV_NAME, bond_dev->name); 275 else 276 memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); 277 } 278 } 279 280 void bond_remove_proc_entry(struct bonding *bond) 281 { 282 struct net_device *bond_dev = bond->dev; 283 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 284 285 if (bn->proc_dir && bond->proc_entry) { 286 remove_proc_entry(bond->proc_file_name, bn->proc_dir); 287 memset(bond->proc_file_name, 0, IFNAMSIZ); 288 bond->proc_entry = NULL; 289 } 290 } 291 292 /* Create the bonding directory under /proc/net, if doesn't exist yet. 293 * Caller must hold rtnl_lock. 294 */ 295 void __net_init bond_create_proc_dir(struct bond_net *bn) 296 { 297 if (!bn->proc_dir) { 298 bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net); 299 if (!bn->proc_dir) 300 pr_warn("Warning: Cannot create /proc/net/%s\n", 301 DRV_NAME); 302 } 303 } 304 305 /* Destroy the bonding directory under /proc/net, if empty. 306 * Caller must hold rtnl_lock. 307 */ 308 void __net_exit bond_destroy_proc_dir(struct bond_net *bn) 309 { 310 if (bn->proc_dir) { 311 remove_proc_entry(DRV_NAME, bn->net->proc_net); 312 bn->proc_dir = NULL; 313 } 314 } 315