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1// SPDX-License-Identifier: GPL-2.02#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 11static 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 31static 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 52static void bond_info_seq_stop(struct seq_file *seq, void *v)53 __releases(RCU)54{55 rcu_read_unlock();56}57 58static 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#if IS_ENABLED(CONFIG_IPV6)134 printed = 0;135 seq_printf(seq, "NS IPv6 target/s (xx::xx form):");136 137 for (i = 0; (i < BOND_MAX_NS_TARGETS); i++) {138 if (ipv6_addr_any(&bond->params.ns_targets[i]))139 break;140 if (printed)141 seq_printf(seq, ",");142 seq_printf(seq, " %pI6c", &bond->params.ns_targets[i]);143 printed = 1;144 }145 seq_printf(seq, "\n");146#endif147 }148 149 if (BOND_MODE(bond) == BOND_MODE_8023AD) {150 struct ad_info ad_info;151 152 seq_puts(seq, "\n802.3ad info\n");153 seq_printf(seq, "LACP active: %s\n",154 (bond->params.lacp_active) ? "on" : "off");155 seq_printf(seq, "LACP rate: %s\n",156 (bond->params.lacp_fast) ? "fast" : "slow");157 seq_printf(seq, "Min links: %d\n", bond->params.min_links);158 optval = bond_opt_get_val(BOND_OPT_AD_SELECT,159 bond->params.ad_select);160 seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",161 optval->string);162 if (capable(CAP_NET_ADMIN)) {163 seq_printf(seq, "System priority: %d\n",164 BOND_AD_INFO(bond).system.sys_priority);165 seq_printf(seq, "System MAC address: %pM\n",166 &BOND_AD_INFO(bond).system.sys_mac_addr);167 168 if (__bond_3ad_get_active_agg_info(bond, &ad_info)) {169 seq_printf(seq,170 "bond %s has no active aggregator\n",171 bond->dev->name);172 } else {173 seq_printf(seq, "Active Aggregator Info:\n");174 175 seq_printf(seq, "\tAggregator ID: %d\n",176 ad_info.aggregator_id);177 seq_printf(seq, "\tNumber of ports: %d\n",178 ad_info.ports);179 seq_printf(seq, "\tActor Key: %d\n",180 ad_info.actor_key);181 seq_printf(seq, "\tPartner Key: %d\n",182 ad_info.partner_key);183 seq_printf(seq, "\tPartner Mac Address: %pM\n",184 ad_info.partner_system);185 }186 }187 }188}189 190static void bond_info_show_slave(struct seq_file *seq,191 const struct slave *slave)192{193 struct bonding *bond = pde_data(file_inode(seq->file));194 195 seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);196 seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link));197 if (slave->speed == SPEED_UNKNOWN)198 seq_printf(seq, "Speed: %s\n", "Unknown");199 else200 seq_printf(seq, "Speed: %d Mbps\n", slave->speed);201 202 if (slave->duplex == DUPLEX_UNKNOWN)203 seq_printf(seq, "Duplex: %s\n", "Unknown");204 else205 seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");206 207 seq_printf(seq, "Link Failure Count: %u\n",208 slave->link_failure_count);209 210 seq_printf(seq, "Permanent HW addr: %*phC\n",211 slave->dev->addr_len, slave->perm_hwaddr);212 seq_printf(seq, "Slave queue ID: %d\n", READ_ONCE(slave->queue_id));213 214 if (BOND_MODE(bond) == BOND_MODE_8023AD) {215 const struct port *port = &SLAVE_AD_INFO(slave)->port;216 const struct aggregator *agg = port->aggregator;217 218 if (agg) {219 seq_printf(seq, "Aggregator ID: %d\n",220 agg->aggregator_identifier);221 seq_printf(seq, "Actor Churn State: %s\n",222 bond_3ad_churn_desc(port->sm_churn_actor_state));223 seq_printf(seq, "Partner Churn State: %s\n",224 bond_3ad_churn_desc(port->sm_churn_partner_state));225 seq_printf(seq, "Actor Churned Count: %d\n",226 port->churn_actor_count);227 seq_printf(seq, "Partner Churned Count: %d\n",228 port->churn_partner_count);229 230 if (capable(CAP_NET_ADMIN)) {231 seq_puts(seq, "details actor lacp pdu:\n");232 seq_printf(seq, " system priority: %d\n",233 port->actor_system_priority);234 seq_printf(seq, " system mac address: %pM\n",235 &port->actor_system);236 seq_printf(seq, " port key: %d\n",237 port->actor_oper_port_key);238 seq_printf(seq, " port priority: %d\n",239 port->actor_port_priority);240 seq_printf(seq, " port number: %d\n",241 port->actor_port_number);242 seq_printf(seq, " port state: %d\n",243 port->actor_oper_port_state);244 245 seq_puts(seq, "details partner lacp pdu:\n");246 seq_printf(seq, " system priority: %d\n",247 port->partner_oper.system_priority);248 seq_printf(seq, " system mac address: %pM\n",249 &port->partner_oper.system);250 seq_printf(seq, " oper key: %d\n",251 port->partner_oper.key);252 seq_printf(seq, " port priority: %d\n",253 port->partner_oper.port_priority);254 seq_printf(seq, " port number: %d\n",255 port->partner_oper.port_number);256 seq_printf(seq, " port state: %d\n",257 port->partner_oper.port_state);258 }259 } else {260 seq_puts(seq, "Aggregator ID: N/A\n");261 }262 }263}264 265static int bond_info_seq_show(struct seq_file *seq, void *v)266{267 if (v == SEQ_START_TOKEN) {268 seq_printf(seq, "%s\n", bond_version);269 bond_info_show_master(seq);270 } else271 bond_info_show_slave(seq, v);272 273 return 0;274}275 276static const struct seq_operations bond_info_seq_ops = {277 .start = bond_info_seq_start,278 .next = bond_info_seq_next,279 .stop = bond_info_seq_stop,280 .show = bond_info_seq_show,281};282 283void bond_create_proc_entry(struct bonding *bond)284{285 struct net_device *bond_dev = bond->dev;286 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);287 288 if (bn->proc_dir) {289 bond->proc_entry = proc_create_seq_data(bond_dev->name, 0444,290 bn->proc_dir, &bond_info_seq_ops, bond);291 if (bond->proc_entry == NULL)292 netdev_warn(bond_dev, "Cannot create /proc/net/%s/%s\n",293 DRV_NAME, bond_dev->name);294 else295 memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);296 }297}298 299void bond_remove_proc_entry(struct bonding *bond)300{301 struct net_device *bond_dev = bond->dev;302 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);303 304 if (bn->proc_dir && bond->proc_entry) {305 remove_proc_entry(bond->proc_file_name, bn->proc_dir);306 memset(bond->proc_file_name, 0, IFNAMSIZ);307 bond->proc_entry = NULL;308 }309}310 311/* Create the bonding directory under /proc/net, if doesn't exist yet.312 * Caller must hold rtnl_lock.313 */314void __net_init bond_create_proc_dir(struct bond_net *bn)315{316 if (!bn->proc_dir) {317 bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);318 if (!bn->proc_dir)319 pr_warn("Warning: Cannot create /proc/net/%s\n",320 DRV_NAME);321 }322}323 324/* Destroy the bonding directory under /proc/net, if empty.325 */326void __net_exit bond_destroy_proc_dir(struct bond_net *bn)327{328 if (bn->proc_dir) {329 remove_proc_entry(DRV_NAME, bn->net->proc_net);330 bn->proc_dir = NULL;331 }332}333