1 #include <linux/proc_fs.h> 2 #include <net/net_namespace.h> 3 #include <net/netns/generic.h> 4 #include "bonding.h" 5 6 7 static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos) 8 __acquires(RCU) 9 __acquires(&bond->lock) 10 { 11 struct bonding *bond = seq->private; 12 loff_t off = 0; 13 struct slave *slave; 14 int i; 15 16 /* make sure the bond won't be taken away */ 17 rcu_read_lock(); 18 read_lock(&bond->lock); 19 20 if (*pos == 0) 21 return SEQ_START_TOKEN; 22 23 bond_for_each_slave(bond, slave, i) { 24 if (++off == *pos) 25 return slave; 26 } 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 = seq->private; 34 struct slave *slave = v; 35 36 ++*pos; 37 if (v == SEQ_START_TOKEN) 38 return bond->first_slave; 39 40 slave = slave->next; 41 42 return (slave == bond->first_slave) ? NULL : slave; 43 } 44 45 static void bond_info_seq_stop(struct seq_file *seq, void *v) 46 __releases(&bond->lock) 47 __releases(RCU) 48 { 49 struct bonding *bond = seq->private; 50 51 read_unlock(&bond->lock); 52 rcu_read_unlock(); 53 } 54 55 static void bond_info_show_master(struct seq_file *seq) 56 { 57 struct bonding *bond = seq->private; 58 struct slave *curr; 59 int i; 60 61 read_lock(&bond->curr_slave_lock); 62 curr = bond->curr_active_slave; 63 read_unlock(&bond->curr_slave_lock); 64 65 seq_printf(seq, "Bonding Mode: %s", 66 bond_mode_name(bond->params.mode)); 67 68 if (bond->params.mode == BOND_MODE_ACTIVEBACKUP && 69 bond->params.fail_over_mac) 70 seq_printf(seq, " (fail_over_mac %s)", 71 fail_over_mac_tbl[bond->params.fail_over_mac].modename); 72 73 seq_printf(seq, "\n"); 74 75 if (bond->params.mode == BOND_MODE_XOR || 76 bond->params.mode == BOND_MODE_8023AD) { 77 seq_printf(seq, "Transmit Hash Policy: %s (%d)\n", 78 xmit_hashtype_tbl[bond->params.xmit_policy].modename, 79 bond->params.xmit_policy); 80 } 81 82 if (USES_PRIMARY(bond->params.mode)) { 83 seq_printf(seq, "Primary Slave: %s", 84 (bond->primary_slave) ? 85 bond->primary_slave->dev->name : "None"); 86 if (bond->primary_slave) 87 seq_printf(seq, " (primary_reselect %s)", 88 pri_reselect_tbl[bond->params.primary_reselect].modename); 89 90 seq_printf(seq, "\nCurrently Active Slave: %s\n", 91 (curr) ? curr->dev->name : "None"); 92 } 93 94 seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ? 95 "up" : "down"); 96 seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon); 97 seq_printf(seq, "Up Delay (ms): %d\n", 98 bond->params.updelay * bond->params.miimon); 99 seq_printf(seq, "Down Delay (ms): %d\n", 100 bond->params.downdelay * bond->params.miimon); 101 102 103 /* ARP information */ 104 if (bond->params.arp_interval > 0) { 105 int printed = 0; 106 seq_printf(seq, "ARP Polling Interval (ms): %d\n", 107 bond->params.arp_interval); 108 109 seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); 110 111 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { 112 if (!bond->params.arp_targets[i]) 113 break; 114 if (printed) 115 seq_printf(seq, ","); 116 seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); 117 printed = 1; 118 } 119 seq_printf(seq, "\n"); 120 } 121 122 if (bond->params.mode == BOND_MODE_8023AD) { 123 struct ad_info ad_info; 124 125 seq_puts(seq, "\n802.3ad info\n"); 126 seq_printf(seq, "LACP rate: %s\n", 127 (bond->params.lacp_fast) ? "fast" : "slow"); 128 seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", 129 ad_select_tbl[bond->params.ad_select].modename); 130 131 if (bond_3ad_get_active_agg_info(bond, &ad_info)) { 132 seq_printf(seq, "bond %s has no active aggregator\n", 133 bond->dev->name); 134 } else { 135 seq_printf(seq, "Active Aggregator Info:\n"); 136 137 seq_printf(seq, "\tAggregator ID: %d\n", 138 ad_info.aggregator_id); 139 seq_printf(seq, "\tNumber of ports: %d\n", 140 ad_info.ports); 141 seq_printf(seq, "\tActor Key: %d\n", 142 ad_info.actor_key); 143 seq_printf(seq, "\tPartner Key: %d\n", 144 ad_info.partner_key); 145 seq_printf(seq, "\tPartner Mac Address: %pM\n", 146 ad_info.partner_system); 147 } 148 } 149 } 150 151 static void bond_info_show_slave(struct seq_file *seq, 152 const struct slave *slave) 153 { 154 struct bonding *bond = seq->private; 155 156 seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); 157 seq_printf(seq, "MII Status: %s\n", 158 (slave->link == BOND_LINK_UP) ? "up" : "down"); 159 seq_printf(seq, "Speed: %d Mbps\n", slave->speed); 160 seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half"); 161 seq_printf(seq, "Link Failure Count: %u\n", 162 slave->link_failure_count); 163 164 seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr); 165 166 if (bond->params.mode == BOND_MODE_8023AD) { 167 const struct aggregator *agg 168 = SLAVE_AD_INFO(slave).port.aggregator; 169 170 if (agg) 171 seq_printf(seq, "Aggregator ID: %d\n", 172 agg->aggregator_identifier); 173 else 174 seq_puts(seq, "Aggregator ID: N/A\n"); 175 } 176 seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id); 177 } 178 179 static int bond_info_seq_show(struct seq_file *seq, void *v) 180 { 181 if (v == SEQ_START_TOKEN) { 182 seq_printf(seq, "%s\n", bond_version); 183 bond_info_show_master(seq); 184 } else 185 bond_info_show_slave(seq, v); 186 187 return 0; 188 } 189 190 static const struct seq_operations bond_info_seq_ops = { 191 .start = bond_info_seq_start, 192 .next = bond_info_seq_next, 193 .stop = bond_info_seq_stop, 194 .show = bond_info_seq_show, 195 }; 196 197 static int bond_info_open(struct inode *inode, struct file *file) 198 { 199 struct seq_file *seq; 200 struct proc_dir_entry *proc; 201 int res; 202 203 res = seq_open(file, &bond_info_seq_ops); 204 if (!res) { 205 /* recover the pointer buried in proc_dir_entry data */ 206 seq = file->private_data; 207 proc = PDE(inode); 208 seq->private = proc->data; 209 } 210 211 return res; 212 } 213 214 static const struct file_operations bond_info_fops = { 215 .owner = THIS_MODULE, 216 .open = bond_info_open, 217 .read = seq_read, 218 .llseek = seq_lseek, 219 .release = seq_release, 220 }; 221 222 void bond_create_proc_entry(struct bonding *bond) 223 { 224 struct net_device *bond_dev = bond->dev; 225 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 226 227 if (bn->proc_dir) { 228 bond->proc_entry = proc_create_data(bond_dev->name, 229 S_IRUGO, bn->proc_dir, 230 &bond_info_fops, bond); 231 if (bond->proc_entry == NULL) 232 pr_warning("Warning: Cannot create /proc/net/%s/%s\n", 233 DRV_NAME, bond_dev->name); 234 else 235 memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); 236 } 237 } 238 239 void bond_remove_proc_entry(struct bonding *bond) 240 { 241 struct net_device *bond_dev = bond->dev; 242 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 243 244 if (bn->proc_dir && bond->proc_entry) { 245 remove_proc_entry(bond->proc_file_name, bn->proc_dir); 246 memset(bond->proc_file_name, 0, IFNAMSIZ); 247 bond->proc_entry = NULL; 248 } 249 } 250 251 /* Create the bonding directory under /proc/net, if doesn't exist yet. 252 * Caller must hold rtnl_lock. 253 */ 254 void __net_init bond_create_proc_dir(struct bond_net *bn) 255 { 256 if (!bn->proc_dir) { 257 bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net); 258 if (!bn->proc_dir) 259 pr_warning("Warning: cannot create /proc/net/%s\n", 260 DRV_NAME); 261 } 262 } 263 264 /* Destroy the bonding directory under /proc/net, if empty. 265 * Caller must hold rtnl_lock. 266 */ 267 void __net_exit bond_destroy_proc_dir(struct bond_net *bn) 268 { 269 if (bn->proc_dir) { 270 remove_proc_entry(DRV_NAME, bn->net->proc_net); 271 bn->proc_dir = NULL; 272 } 273 } 274