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 seq_printf(seq, "ARP Polling Interval (ms): %d\n", 116 bond->params.arp_interval); 117 118 seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); 119 120 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { 121 if (!bond->params.arp_targets[i]) 122 break; 123 if (printed) 124 seq_printf(seq, ","); 125 seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); 126 printed = 1; 127 } 128 seq_printf(seq, "\n"); 129 } 130 131 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 132 struct ad_info ad_info; 133 134 seq_puts(seq, "\n802.3ad info\n"); 135 seq_printf(seq, "LACP rate: %s\n", 136 (bond->params.lacp_fast) ? "fast" : "slow"); 137 seq_printf(seq, "Min links: %d\n", bond->params.min_links); 138 optval = bond_opt_get_val(BOND_OPT_AD_SELECT, 139 bond->params.ad_select); 140 seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", 141 optval->string); 142 if (capable(CAP_NET_ADMIN)) { 143 seq_printf(seq, "System priority: %d\n", 144 BOND_AD_INFO(bond).system.sys_priority); 145 seq_printf(seq, "System MAC address: %pM\n", 146 &BOND_AD_INFO(bond).system.sys_mac_addr); 147 148 if (__bond_3ad_get_active_agg_info(bond, &ad_info)) { 149 seq_printf(seq, 150 "bond %s has no active aggregator\n", 151 bond->dev->name); 152 } else { 153 seq_printf(seq, "Active Aggregator Info:\n"); 154 155 seq_printf(seq, "\tAggregator ID: %d\n", 156 ad_info.aggregator_id); 157 seq_printf(seq, "\tNumber of ports: %d\n", 158 ad_info.ports); 159 seq_printf(seq, "\tActor Key: %d\n", 160 ad_info.actor_key); 161 seq_printf(seq, "\tPartner Key: %d\n", 162 ad_info.partner_key); 163 seq_printf(seq, "\tPartner Mac Address: %pM\n", 164 ad_info.partner_system); 165 } 166 } 167 } 168 } 169 170 static void bond_info_show_slave(struct seq_file *seq, 171 const struct slave *slave) 172 { 173 struct bonding *bond = PDE_DATA(file_inode(seq->file)); 174 175 seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); 176 seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link)); 177 if (slave->speed == SPEED_UNKNOWN) 178 seq_printf(seq, "Speed: %s\n", "Unknown"); 179 else 180 seq_printf(seq, "Speed: %d Mbps\n", slave->speed); 181 182 if (slave->duplex == DUPLEX_UNKNOWN) 183 seq_printf(seq, "Duplex: %s\n", "Unknown"); 184 else 185 seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half"); 186 187 seq_printf(seq, "Link Failure Count: %u\n", 188 slave->link_failure_count); 189 190 seq_printf(seq, "Permanent HW addr: %*phC\n", 191 slave->dev->addr_len, slave->perm_hwaddr); 192 seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id); 193 194 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 195 const struct port *port = &SLAVE_AD_INFO(slave)->port; 196 const struct aggregator *agg = port->aggregator; 197 198 if (agg) { 199 seq_printf(seq, "Aggregator ID: %d\n", 200 agg->aggregator_identifier); 201 seq_printf(seq, "Actor Churn State: %s\n", 202 bond_3ad_churn_desc(port->sm_churn_actor_state)); 203 seq_printf(seq, "Partner Churn State: %s\n", 204 bond_3ad_churn_desc(port->sm_churn_partner_state)); 205 seq_printf(seq, "Actor Churned Count: %d\n", 206 port->churn_actor_count); 207 seq_printf(seq, "Partner Churned Count: %d\n", 208 port->churn_partner_count); 209 210 if (capable(CAP_NET_ADMIN)) { 211 seq_puts(seq, "details actor lacp pdu:\n"); 212 seq_printf(seq, " system priority: %d\n", 213 port->actor_system_priority); 214 seq_printf(seq, " system mac address: %pM\n", 215 &port->actor_system); 216 seq_printf(seq, " port key: %d\n", 217 port->actor_oper_port_key); 218 seq_printf(seq, " port priority: %d\n", 219 port->actor_port_priority); 220 seq_printf(seq, " port number: %d\n", 221 port->actor_port_number); 222 seq_printf(seq, " port state: %d\n", 223 port->actor_oper_port_state); 224 225 seq_puts(seq, "details partner lacp pdu:\n"); 226 seq_printf(seq, " system priority: %d\n", 227 port->partner_oper.system_priority); 228 seq_printf(seq, " system mac address: %pM\n", 229 &port->partner_oper.system); 230 seq_printf(seq, " oper key: %d\n", 231 port->partner_oper.key); 232 seq_printf(seq, " port priority: %d\n", 233 port->partner_oper.port_priority); 234 seq_printf(seq, " port number: %d\n", 235 port->partner_oper.port_number); 236 seq_printf(seq, " port state: %d\n", 237 port->partner_oper.port_state); 238 } 239 } else { 240 seq_puts(seq, "Aggregator ID: N/A\n"); 241 } 242 } 243 } 244 245 static int bond_info_seq_show(struct seq_file *seq, void *v) 246 { 247 if (v == SEQ_START_TOKEN) { 248 seq_printf(seq, "%s\n", bond_version); 249 bond_info_show_master(seq); 250 } else 251 bond_info_show_slave(seq, v); 252 253 return 0; 254 } 255 256 static const struct seq_operations bond_info_seq_ops = { 257 .start = bond_info_seq_start, 258 .next = bond_info_seq_next, 259 .stop = bond_info_seq_stop, 260 .show = bond_info_seq_show, 261 }; 262 263 void bond_create_proc_entry(struct bonding *bond) 264 { 265 struct net_device *bond_dev = bond->dev; 266 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 267 268 if (bn->proc_dir) { 269 bond->proc_entry = proc_create_seq_data(bond_dev->name, 0444, 270 bn->proc_dir, &bond_info_seq_ops, bond); 271 if (bond->proc_entry == NULL) 272 netdev_warn(bond_dev, "Cannot create /proc/net/%s/%s\n", 273 DRV_NAME, bond_dev->name); 274 else 275 memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); 276 } 277 } 278 279 void bond_remove_proc_entry(struct bonding *bond) 280 { 281 struct net_device *bond_dev = bond->dev; 282 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 283 284 if (bn->proc_dir && bond->proc_entry) { 285 remove_proc_entry(bond->proc_file_name, bn->proc_dir); 286 memset(bond->proc_file_name, 0, IFNAMSIZ); 287 bond->proc_entry = NULL; 288 } 289 } 290 291 /* Create the bonding directory under /proc/net, if doesn't exist yet. 292 * Caller must hold rtnl_lock. 293 */ 294 void __net_init bond_create_proc_dir(struct bond_net *bn) 295 { 296 if (!bn->proc_dir) { 297 bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net); 298 if (!bn->proc_dir) 299 pr_warn("Warning: Cannot create /proc/net/%s\n", 300 DRV_NAME); 301 } 302 } 303 304 /* Destroy the bonding directory under /proc/net, if empty. 305 * Caller must hold rtnl_lock. 306 */ 307 void __net_exit bond_destroy_proc_dir(struct bond_net *bn) 308 { 309 if (bn->proc_dir) { 310 remove_proc_entry(DRV_NAME, bn->net->proc_net); 311 bn->proc_dir = NULL; 312 } 313 } 314