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 extern const char *bond_mode_name(int mode); 8 9 static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos) 10 __acquires(RCU) 11 __acquires(&bond->lock) 12 { 13 struct bonding *bond = seq->private; 14 loff_t off = 0; 15 struct slave *slave; 16 int i; 17 18 /* make sure the bond won't be taken away */ 19 rcu_read_lock(); 20 read_lock(&bond->lock); 21 22 if (*pos == 0) 23 return SEQ_START_TOKEN; 24 25 bond_for_each_slave(bond, slave, i) { 26 if (++off == *pos) 27 return slave; 28 } 29 30 return NULL; 31 } 32 33 static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) 34 { 35 struct bonding *bond = seq->private; 36 struct slave *slave = v; 37 38 ++*pos; 39 if (v == SEQ_START_TOKEN) 40 return bond->first_slave; 41 42 slave = slave->next; 43 44 return (slave == bond->first_slave) ? NULL : slave; 45 } 46 47 static void bond_info_seq_stop(struct seq_file *seq, void *v) 48 __releases(&bond->lock) 49 __releases(RCU) 50 { 51 struct bonding *bond = seq->private; 52 53 read_unlock(&bond->lock); 54 rcu_read_unlock(); 55 } 56 57 static void bond_info_show_master(struct seq_file *seq) 58 { 59 struct bonding *bond = seq->private; 60 struct slave *curr; 61 int i; 62 63 read_lock(&bond->curr_slave_lock); 64 curr = bond->curr_active_slave; 65 read_unlock(&bond->curr_slave_lock); 66 67 seq_printf(seq, "Bonding Mode: %s", 68 bond_mode_name(bond->params.mode)); 69 70 if (bond->params.mode == BOND_MODE_ACTIVEBACKUP && 71 bond->params.fail_over_mac) 72 seq_printf(seq, " (fail_over_mac %s)", 73 fail_over_mac_tbl[bond->params.fail_over_mac].modename); 74 75 seq_printf(seq, "\n"); 76 77 if (bond->params.mode == BOND_MODE_XOR || 78 bond->params.mode == BOND_MODE_8023AD) { 79 seq_printf(seq, "Transmit Hash Policy: %s (%d)\n", 80 xmit_hashtype_tbl[bond->params.xmit_policy].modename, 81 bond->params.xmit_policy); 82 } 83 84 if (USES_PRIMARY(bond->params.mode)) { 85 seq_printf(seq, "Primary Slave: %s", 86 (bond->primary_slave) ? 87 bond->primary_slave->dev->name : "None"); 88 if (bond->primary_slave) 89 seq_printf(seq, " (primary_reselect %s)", 90 pri_reselect_tbl[bond->params.primary_reselect].modename); 91 92 seq_printf(seq, "\nCurrently Active Slave: %s\n", 93 (curr) ? curr->dev->name : "None"); 94 } 95 96 seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ? 97 "up" : "down"); 98 seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon); 99 seq_printf(seq, "Up Delay (ms): %d\n", 100 bond->params.updelay * bond->params.miimon); 101 seq_printf(seq, "Down Delay (ms): %d\n", 102 bond->params.downdelay * bond->params.miimon); 103 104 105 /* ARP information */ 106 if (bond->params.arp_interval > 0) { 107 int printed = 0; 108 seq_printf(seq, "ARP Polling Interval (ms): %d\n", 109 bond->params.arp_interval); 110 111 seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); 112 113 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { 114 if (!bond->params.arp_targets[i]) 115 break; 116 if (printed) 117 seq_printf(seq, ","); 118 seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); 119 printed = 1; 120 } 121 seq_printf(seq, "\n"); 122 } 123 124 if (bond->params.mode == BOND_MODE_8023AD) { 125 struct ad_info ad_info; 126 127 seq_puts(seq, "\n802.3ad info\n"); 128 seq_printf(seq, "LACP rate: %s\n", 129 (bond->params.lacp_fast) ? "fast" : "slow"); 130 seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", 131 ad_select_tbl[bond->params.ad_select].modename); 132 133 if (bond_3ad_get_active_agg_info(bond, &ad_info)) { 134 seq_printf(seq, "bond %s has no active aggregator\n", 135 bond->dev->name); 136 } else { 137 seq_printf(seq, "Active Aggregator Info:\n"); 138 139 seq_printf(seq, "\tAggregator ID: %d\n", 140 ad_info.aggregator_id); 141 seq_printf(seq, "\tNumber of ports: %d\n", 142 ad_info.ports); 143 seq_printf(seq, "\tActor Key: %d\n", 144 ad_info.actor_key); 145 seq_printf(seq, "\tPartner Key: %d\n", 146 ad_info.partner_key); 147 seq_printf(seq, "\tPartner Mac Address: %pM\n", 148 ad_info.partner_system); 149 } 150 } 151 } 152 153 static void bond_info_show_slave(struct seq_file *seq, 154 const struct slave *slave) 155 { 156 struct bonding *bond = seq->private; 157 158 seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); 159 seq_printf(seq, "MII Status: %s\n", 160 (slave->link == BOND_LINK_UP) ? "up" : "down"); 161 seq_printf(seq, "Speed: %d Mbps\n", slave->speed); 162 seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half"); 163 seq_printf(seq, "Link Failure Count: %u\n", 164 slave->link_failure_count); 165 166 seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr); 167 168 if (bond->params.mode == BOND_MODE_8023AD) { 169 const struct aggregator *agg 170 = SLAVE_AD_INFO(slave).port.aggregator; 171 172 if (agg) 173 seq_printf(seq, "Aggregator ID: %d\n", 174 agg->aggregator_identifier); 175 else 176 seq_puts(seq, "Aggregator ID: N/A\n"); 177 } 178 seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id); 179 } 180 181 static int bond_info_seq_show(struct seq_file *seq, void *v) 182 { 183 if (v == SEQ_START_TOKEN) { 184 seq_printf(seq, "%s\n", bond_version); 185 bond_info_show_master(seq); 186 } else 187 bond_info_show_slave(seq, v); 188 189 return 0; 190 } 191 192 static const struct seq_operations bond_info_seq_ops = { 193 .start = bond_info_seq_start, 194 .next = bond_info_seq_next, 195 .stop = bond_info_seq_stop, 196 .show = bond_info_seq_show, 197 }; 198 199 static int bond_info_open(struct inode *inode, struct file *file) 200 { 201 struct seq_file *seq; 202 struct proc_dir_entry *proc; 203 int res; 204 205 res = seq_open(file, &bond_info_seq_ops); 206 if (!res) { 207 /* recover the pointer buried in proc_dir_entry data */ 208 seq = file->private_data; 209 proc = PDE(inode); 210 seq->private = proc->data; 211 } 212 213 return res; 214 } 215 216 static const struct file_operations bond_info_fops = { 217 .owner = THIS_MODULE, 218 .open = bond_info_open, 219 .read = seq_read, 220 .llseek = seq_lseek, 221 .release = seq_release, 222 }; 223 224 void bond_create_proc_entry(struct bonding *bond) 225 { 226 struct net_device *bond_dev = bond->dev; 227 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 228 229 if (bn->proc_dir) { 230 bond->proc_entry = proc_create_data(bond_dev->name, 231 S_IRUGO, bn->proc_dir, 232 &bond_info_fops, bond); 233 if (bond->proc_entry == NULL) 234 pr_warning("Warning: Cannot create /proc/net/%s/%s\n", 235 DRV_NAME, bond_dev->name); 236 else 237 memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); 238 } 239 } 240 241 void bond_remove_proc_entry(struct bonding *bond) 242 { 243 struct net_device *bond_dev = bond->dev; 244 struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); 245 246 if (bn->proc_dir && bond->proc_entry) { 247 remove_proc_entry(bond->proc_file_name, bn->proc_dir); 248 memset(bond->proc_file_name, 0, IFNAMSIZ); 249 bond->proc_entry = NULL; 250 } 251 } 252 253 /* Create the bonding directory under /proc/net, if doesn't exist yet. 254 * Caller must hold rtnl_lock. 255 */ 256 void __net_init bond_create_proc_dir(struct bond_net *bn) 257 { 258 if (!bn->proc_dir) { 259 bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net); 260 if (!bn->proc_dir) 261 pr_warning("Warning: cannot create /proc/net/%s\n", 262 DRV_NAME); 263 } 264 } 265 266 /* Destroy the bonding directory under /proc/net, if empty. 267 * Caller must hold rtnl_lock. 268 */ 269 void __net_exit bond_destroy_proc_dir(struct bond_net *bn) 270 { 271 if (bn->proc_dir) { 272 remove_proc_entry(DRV_NAME, bn->net->proc_net); 273 bn->proc_dir = NULL; 274 } 275 } 276