Mitch Williams | b76cdba | 2005-11-09 10:36:41 -0800 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright(c) 2004-2005 Intel Corporation. All rights reserved. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License as published by the |
| 7 | * Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 12 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 13 | * for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 18 | * |
| 19 | * The full GNU General Public License is included in this distribution in the |
| 20 | * file called LICENSE. |
| 21 | * |
Mitch Williams | b76cdba | 2005-11-09 10:36:41 -0800 | [diff] [blame] | 22 | */ |
| 23 | #include <linux/config.h> |
| 24 | #include <linux/kernel.h> |
| 25 | #include <linux/module.h> |
| 26 | #include <linux/sched.h> |
| 27 | #include <linux/device.h> |
| 28 | #include <linux/sysdev.h> |
| 29 | #include <linux/fs.h> |
| 30 | #include <linux/types.h> |
| 31 | #include <linux/string.h> |
| 32 | #include <linux/netdevice.h> |
| 33 | #include <linux/inetdevice.h> |
| 34 | #include <linux/in.h> |
| 35 | #include <linux/sysfs.h> |
| 36 | #include <linux/string.h> |
| 37 | #include <linux/ctype.h> |
| 38 | #include <linux/inet.h> |
| 39 | #include <linux/rtnetlink.h> |
| 40 | |
| 41 | /* #define BONDING_DEBUG 1 */ |
| 42 | #include "bonding.h" |
| 43 | #define to_class_dev(obj) container_of(obj,struct class_device,kobj) |
| 44 | #define to_net_dev(class) container_of(class, struct net_device, class_dev) |
| 45 | #define to_bond(cd) ((struct bonding *)(to_net_dev(cd)->priv)) |
| 46 | |
| 47 | /*---------------------------- Declarations -------------------------------*/ |
| 48 | |
| 49 | |
| 50 | extern struct list_head bond_dev_list; |
| 51 | extern struct bond_params bonding_defaults; |
| 52 | extern struct bond_parm_tbl bond_mode_tbl[]; |
| 53 | extern struct bond_parm_tbl bond_lacp_tbl[]; |
| 54 | extern struct bond_parm_tbl xmit_hashtype_tbl[]; |
| 55 | |
| 56 | static int expected_refcount = -1; |
| 57 | static struct class *netdev_class; |
| 58 | /*--------------------------- Data Structures -----------------------------*/ |
| 59 | |
| 60 | /* Bonding sysfs lock. Why can't we just use the subsytem lock? |
| 61 | * Because kobject_register tries to acquire the subsystem lock. If |
| 62 | * we already hold the lock (which we would if the user was creating |
| 63 | * a new bond through the sysfs interface), we deadlock. |
| 64 | * This lock is only needed when deleting a bond - we need to make sure |
| 65 | * that we don't collide with an ongoing ioctl. |
| 66 | */ |
| 67 | |
| 68 | struct rw_semaphore bonding_rwsem; |
| 69 | |
| 70 | |
| 71 | |
| 72 | |
| 73 | /*------------------------------ Functions --------------------------------*/ |
| 74 | |
| 75 | /* |
| 76 | * "show" function for the bond_masters attribute. |
| 77 | * The class parameter is ignored. |
| 78 | */ |
| 79 | static ssize_t bonding_show_bonds(struct class *cls, char *buffer) |
| 80 | { |
| 81 | int res = 0; |
| 82 | struct bonding *bond; |
| 83 | |
| 84 | down_read(&(bonding_rwsem)); |
| 85 | |
| 86 | list_for_each_entry(bond, &bond_dev_list, bond_list) { |
| 87 | if (res > (PAGE_SIZE - IFNAMSIZ)) { |
| 88 | /* not enough space for another interface name */ |
| 89 | if ((PAGE_SIZE - res) > 10) |
| 90 | res = PAGE_SIZE - 10; |
| 91 | res += sprintf(buffer + res, "++more++"); |
| 92 | break; |
| 93 | } |
| 94 | res += sprintf(buffer + res, "%s ", |
| 95 | bond->dev->name); |
| 96 | } |
| 97 | res += sprintf(buffer + res, "\n"); |
| 98 | res++; |
| 99 | up_read(&(bonding_rwsem)); |
| 100 | return res; |
| 101 | } |
| 102 | |
| 103 | /* |
| 104 | * "store" function for the bond_masters attribute. This is what |
| 105 | * creates and deletes entire bonds. |
| 106 | * |
| 107 | * The class parameter is ignored. |
| 108 | * |
| 109 | */ |
| 110 | |
| 111 | static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t count) |
| 112 | { |
| 113 | char command[IFNAMSIZ + 1] = {0, }; |
| 114 | char *ifname; |
| 115 | int res = count; |
| 116 | struct bonding *bond; |
| 117 | struct bonding *nxt; |
| 118 | |
| 119 | down_write(&(bonding_rwsem)); |
| 120 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ |
| 121 | ifname = command + 1; |
| 122 | if ((strlen(command) <= 1) || |
| 123 | !dev_valid_name(ifname)) |
| 124 | goto err_no_cmd; |
| 125 | |
| 126 | if (command[0] == '+') { |
| 127 | |
| 128 | /* Check to see if the bond already exists. */ |
| 129 | list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) |
| 130 | if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { |
| 131 | printk(KERN_ERR DRV_NAME |
| 132 | ": cannot add bond %s; it already exists\n", |
| 133 | ifname); |
| 134 | res = -EPERM; |
| 135 | goto out; |
| 136 | } |
| 137 | |
| 138 | printk(KERN_INFO DRV_NAME |
| 139 | ": %s is being created...\n", ifname); |
| 140 | if (bond_create(ifname, &bonding_defaults, &bond)) { |
| 141 | printk(KERN_INFO DRV_NAME |
| 142 | ": %s interface already exists. Bond creation failed.\n", |
| 143 | ifname); |
| 144 | res = -EPERM; |
| 145 | } |
| 146 | goto out; |
| 147 | } |
| 148 | |
| 149 | if (command[0] == '-') { |
| 150 | list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) |
| 151 | if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { |
| 152 | rtnl_lock(); |
| 153 | /* check the ref count on the bond's kobject. |
| 154 | * If it's > expected, then there's a file open, |
| 155 | * and we have to fail. |
| 156 | */ |
| 157 | if (atomic_read(&bond->dev->class_dev.kobj.kref.refcount) |
| 158 | > expected_refcount){ |
| 159 | rtnl_unlock(); |
| 160 | printk(KERN_INFO DRV_NAME |
| 161 | ": Unable remove bond %s due to open references.\n", |
| 162 | ifname); |
| 163 | res = -EPERM; |
| 164 | goto out; |
| 165 | } |
| 166 | printk(KERN_INFO DRV_NAME |
| 167 | ": %s is being deleted...\n", |
| 168 | bond->dev->name); |
| 169 | unregister_netdevice(bond->dev); |
| 170 | bond_deinit(bond->dev); |
| 171 | bond_destroy_sysfs_entry(bond); |
| 172 | rtnl_unlock(); |
| 173 | goto out; |
| 174 | } |
| 175 | |
| 176 | printk(KERN_ERR DRV_NAME |
| 177 | ": unable to delete non-existent bond %s\n", ifname); |
| 178 | res = -ENODEV; |
| 179 | goto out; |
| 180 | } |
| 181 | |
| 182 | err_no_cmd: |
| 183 | printk(KERN_ERR DRV_NAME |
| 184 | ": no command found in bonding_masters. Use +ifname or -ifname.\n"); |
| 185 | res = -EPERM; |
| 186 | |
| 187 | /* Always return either count or an error. If you return 0, you'll |
| 188 | * get called forever, which is bad. |
| 189 | */ |
| 190 | out: |
| 191 | up_write(&(bonding_rwsem)); |
| 192 | return res; |
| 193 | } |
| 194 | /* class attribute for bond_masters file. This ends up in /sys/class/net */ |
| 195 | static CLASS_ATTR(bonding_masters, S_IWUSR | S_IRUGO, |
| 196 | bonding_show_bonds, bonding_store_bonds); |
| 197 | |
| 198 | int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave) |
| 199 | { |
| 200 | char linkname[IFNAMSIZ+7]; |
| 201 | int ret = 0; |
| 202 | |
| 203 | /* first, create a link from the slave back to the master */ |
| 204 | ret = sysfs_create_link(&(slave->class_dev.kobj), &(master->class_dev.kobj), |
| 205 | "master"); |
| 206 | if (ret) |
| 207 | return ret; |
| 208 | /* next, create a link from the master to the slave */ |
| 209 | sprintf(linkname,"slave_%s",slave->name); |
| 210 | ret = sysfs_create_link(&(master->class_dev.kobj), &(slave->class_dev.kobj), |
| 211 | linkname); |
| 212 | return ret; |
| 213 | |
| 214 | } |
| 215 | |
| 216 | void bond_destroy_slave_symlinks(struct net_device *master, struct net_device *slave) |
| 217 | { |
| 218 | char linkname[IFNAMSIZ+7]; |
| 219 | |
| 220 | sysfs_remove_link(&(slave->class_dev.kobj), "master"); |
| 221 | sprintf(linkname,"slave_%s",slave->name); |
| 222 | sysfs_remove_link(&(master->class_dev.kobj), linkname); |
| 223 | } |
| 224 | |
| 225 | |
| 226 | /* |
| 227 | * Show the slaves in the current bond. |
| 228 | */ |
| 229 | static ssize_t bonding_show_slaves(struct class_device *cd, char *buf) |
| 230 | { |
| 231 | struct slave *slave; |
| 232 | int i, res = 0; |
| 233 | struct bonding *bond = to_bond(cd); |
| 234 | |
| 235 | read_lock_bh(&bond->lock); |
| 236 | bond_for_each_slave(bond, slave, i) { |
| 237 | if (res > (PAGE_SIZE - IFNAMSIZ)) { |
| 238 | /* not enough space for another interface name */ |
| 239 | if ((PAGE_SIZE - res) > 10) |
| 240 | res = PAGE_SIZE - 10; |
| 241 | res += sprintf(buf + res, "++more++"); |
| 242 | break; |
| 243 | } |
| 244 | res += sprintf(buf + res, "%s ", slave->dev->name); |
| 245 | } |
| 246 | read_unlock_bh(&bond->lock); |
| 247 | res += sprintf(buf + res, "\n"); |
| 248 | res++; |
| 249 | return res; |
| 250 | } |
| 251 | |
| 252 | /* |
| 253 | * Set the slaves in the current bond. The bond interface must be |
| 254 | * up for this to succeed. |
| 255 | * This function is largely the same flow as bonding_update_bonds(). |
| 256 | */ |
| 257 | static ssize_t bonding_store_slaves(struct class_device *cd, const char *buffer, size_t count) |
| 258 | { |
| 259 | char command[IFNAMSIZ + 1] = { 0, }; |
| 260 | char *ifname; |
| 261 | int i, res, found, ret = count; |
| 262 | struct slave *slave; |
Luiz Fernando Capitulino | 3418db7 | 2006-02-01 00:54:34 -0800 | [diff] [blame] | 263 | struct net_device *dev = NULL; |
Mitch Williams | b76cdba | 2005-11-09 10:36:41 -0800 | [diff] [blame] | 264 | struct bonding *bond = to_bond(cd); |
| 265 | |
| 266 | /* Quick sanity check -- is the bond interface up? */ |
| 267 | if (!(bond->dev->flags & IFF_UP)) { |
| 268 | printk(KERN_ERR DRV_NAME |
| 269 | ": %s: Unable to update slaves because interface is down.\n", |
| 270 | bond->dev->name); |
| 271 | ret = -EPERM; |
| 272 | goto out; |
| 273 | } |
| 274 | |
| 275 | /* Note: We can't hold bond->lock here, as bond_create grabs it. */ |
| 276 | |
| 277 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ |
| 278 | ifname = command + 1; |
| 279 | if ((strlen(command) <= 1) || |
| 280 | !dev_valid_name(ifname)) |
| 281 | goto err_no_cmd; |
| 282 | |
| 283 | if (command[0] == '+') { |
| 284 | |
| 285 | /* Got a slave name in ifname. Is it already in the list? */ |
| 286 | found = 0; |
| 287 | read_lock_bh(&bond->lock); |
| 288 | bond_for_each_slave(bond, slave, i) |
| 289 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { |
| 290 | printk(KERN_ERR DRV_NAME |
| 291 | ": %s: Interface %s is already enslaved!\n", |
| 292 | bond->dev->name, ifname); |
| 293 | ret = -EPERM; |
| 294 | read_unlock_bh(&bond->lock); |
| 295 | goto out; |
| 296 | } |
| 297 | |
| 298 | read_unlock_bh(&bond->lock); |
| 299 | printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n", |
| 300 | bond->dev->name, ifname); |
| 301 | dev = dev_get_by_name(ifname); |
| 302 | if (!dev) { |
| 303 | printk(KERN_INFO DRV_NAME |
| 304 | ": %s: Interface %s does not exist!\n", |
| 305 | bond->dev->name, ifname); |
| 306 | ret = -EPERM; |
| 307 | goto out; |
| 308 | } |
| 309 | else |
| 310 | dev_put(dev); |
| 311 | |
| 312 | if (dev->flags & IFF_UP) { |
| 313 | printk(KERN_ERR DRV_NAME |
| 314 | ": %s: Error: Unable to enslave %s " |
| 315 | "because it is already up.\n", |
| 316 | bond->dev->name, dev->name); |
| 317 | ret = -EPERM; |
| 318 | goto out; |
| 319 | } |
| 320 | /* If this is the first slave, then we need to set |
| 321 | the master's hardware address to be the same as the |
| 322 | slave's. */ |
| 323 | if (!(*((u32 *) & (bond->dev->dev_addr[0])))) { |
| 324 | memcpy(bond->dev->dev_addr, dev->dev_addr, |
| 325 | dev->addr_len); |
| 326 | } |
| 327 | |
| 328 | /* Set the slave's MTU to match the bond */ |
| 329 | if (dev->mtu != bond->dev->mtu) { |
| 330 | if (dev->change_mtu) { |
| 331 | res = dev->change_mtu(dev, |
| 332 | bond->dev->mtu); |
| 333 | if (res) { |
| 334 | ret = res; |
| 335 | goto out; |
| 336 | } |
| 337 | } else { |
| 338 | dev->mtu = bond->dev->mtu; |
| 339 | } |
| 340 | } |
| 341 | rtnl_lock(); |
| 342 | res = bond_enslave(bond->dev, dev); |
| 343 | rtnl_unlock(); |
| 344 | if (res) { |
| 345 | ret = res; |
| 346 | } |
| 347 | goto out; |
| 348 | } |
| 349 | |
| 350 | if (command[0] == '-') { |
| 351 | dev = NULL; |
| 352 | bond_for_each_slave(bond, slave, i) |
| 353 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { |
| 354 | dev = slave->dev; |
| 355 | break; |
| 356 | } |
| 357 | if (dev) { |
| 358 | printk(KERN_INFO DRV_NAME ": %s: Removing slave %s\n", |
| 359 | bond->dev->name, dev->name); |
| 360 | rtnl_lock(); |
| 361 | res = bond_release(bond->dev, dev); |
| 362 | rtnl_unlock(); |
| 363 | if (res) { |
| 364 | ret = res; |
| 365 | goto out; |
| 366 | } |
| 367 | /* set the slave MTU to the default */ |
| 368 | if (dev->change_mtu) { |
| 369 | dev->change_mtu(dev, 1500); |
| 370 | } else { |
| 371 | dev->mtu = 1500; |
| 372 | } |
| 373 | } |
| 374 | else { |
| 375 | printk(KERN_ERR DRV_NAME ": unable to remove non-existent slave %s for bond %s.\n", |
| 376 | ifname, bond->dev->name); |
| 377 | ret = -ENODEV; |
| 378 | } |
| 379 | goto out; |
| 380 | } |
| 381 | |
| 382 | err_no_cmd: |
| 383 | printk(KERN_ERR DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name); |
| 384 | ret = -EPERM; |
| 385 | |
| 386 | out: |
| 387 | return ret; |
| 388 | } |
| 389 | |
| 390 | static CLASS_DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves, bonding_store_slaves); |
| 391 | |
| 392 | /* |
| 393 | * Show and set the bonding mode. The bond interface must be down to |
| 394 | * change the mode. |
| 395 | */ |
| 396 | static ssize_t bonding_show_mode(struct class_device *cd, char *buf) |
| 397 | { |
| 398 | struct bonding *bond = to_bond(cd); |
| 399 | |
| 400 | return sprintf(buf, "%s %d\n", |
| 401 | bond_mode_tbl[bond->params.mode].modename, |
| 402 | bond->params.mode) + 1; |
| 403 | } |
| 404 | |
| 405 | static ssize_t bonding_store_mode(struct class_device *cd, const char *buf, size_t count) |
| 406 | { |
| 407 | int new_value, ret = count; |
| 408 | struct bonding *bond = to_bond(cd); |
| 409 | |
| 410 | if (bond->dev->flags & IFF_UP) { |
| 411 | printk(KERN_ERR DRV_NAME |
| 412 | ": unable to update mode of %s because interface is up.\n", |
| 413 | bond->dev->name); |
| 414 | ret = -EPERM; |
| 415 | goto out; |
| 416 | } |
| 417 | |
| 418 | new_value = bond_parse_parm((char *)buf, bond_mode_tbl); |
| 419 | if (new_value < 0) { |
| 420 | printk(KERN_ERR DRV_NAME |
| 421 | ": %s: Ignoring invalid mode value %.*s.\n", |
| 422 | bond->dev->name, |
| 423 | (int)strlen(buf) - 1, buf); |
| 424 | ret = -EINVAL; |
| 425 | goto out; |
| 426 | } else { |
Jay Vosburgh | 8f903c7 | 2006-02-21 16:36:44 -0800 | [diff] [blame] | 427 | if (bond->params.mode == BOND_MODE_8023AD) |
| 428 | bond_unset_master_3ad_flags(bond); |
| 429 | |
| 430 | if (bond->params.mode == BOND_MODE_ALB) |
| 431 | bond_unset_master_alb_flags(bond); |
| 432 | |
Mitch Williams | b76cdba | 2005-11-09 10:36:41 -0800 | [diff] [blame] | 433 | bond->params.mode = new_value; |
| 434 | bond_set_mode_ops(bond, bond->params.mode); |
| 435 | printk(KERN_INFO DRV_NAME ": %s: setting mode to %s (%d).\n", |
| 436 | bond->dev->name, bond_mode_tbl[new_value].modename, new_value); |
| 437 | } |
| 438 | out: |
| 439 | return ret; |
| 440 | } |
| 441 | static CLASS_DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, bonding_show_mode, bonding_store_mode); |
| 442 | |
| 443 | /* |
| 444 | * Show and set the bonding transmit hash method. The bond interface must be down to |
| 445 | * change the xmit hash policy. |
| 446 | */ |
| 447 | static ssize_t bonding_show_xmit_hash(struct class_device *cd, char *buf) |
| 448 | { |
| 449 | int count; |
| 450 | struct bonding *bond = to_bond(cd); |
| 451 | |
| 452 | if ((bond->params.mode != BOND_MODE_XOR) && |
| 453 | (bond->params.mode != BOND_MODE_8023AD)) { |
| 454 | // Not Applicable |
| 455 | count = sprintf(buf, "NA\n") + 1; |
| 456 | } else { |
| 457 | count = sprintf(buf, "%s %d\n", |
| 458 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, |
| 459 | bond->params.xmit_policy) + 1; |
| 460 | } |
| 461 | |
| 462 | return count; |
| 463 | } |
| 464 | |
| 465 | static ssize_t bonding_store_xmit_hash(struct class_device *cd, const char *buf, size_t count) |
| 466 | { |
| 467 | int new_value, ret = count; |
| 468 | struct bonding *bond = to_bond(cd); |
| 469 | |
| 470 | if (bond->dev->flags & IFF_UP) { |
| 471 | printk(KERN_ERR DRV_NAME |
| 472 | "%s: Interface is up. Unable to update xmit policy.\n", |
| 473 | bond->dev->name); |
| 474 | ret = -EPERM; |
| 475 | goto out; |
| 476 | } |
| 477 | |
| 478 | if ((bond->params.mode != BOND_MODE_XOR) && |
| 479 | (bond->params.mode != BOND_MODE_8023AD)) { |
| 480 | printk(KERN_ERR DRV_NAME |
| 481 | "%s: Transmit hash policy is irrelevant in this mode.\n", |
| 482 | bond->dev->name); |
| 483 | ret = -EPERM; |
| 484 | goto out; |
| 485 | } |
| 486 | |
| 487 | new_value = bond_parse_parm((char *)buf, xmit_hashtype_tbl); |
| 488 | if (new_value < 0) { |
| 489 | printk(KERN_ERR DRV_NAME |
| 490 | ": %s: Ignoring invalid xmit hash policy value %.*s.\n", |
| 491 | bond->dev->name, |
| 492 | (int)strlen(buf) - 1, buf); |
| 493 | ret = -EINVAL; |
| 494 | goto out; |
| 495 | } else { |
| 496 | bond->params.xmit_policy = new_value; |
| 497 | bond_set_mode_ops(bond, bond->params.mode); |
| 498 | printk(KERN_INFO DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n", |
| 499 | bond->dev->name, xmit_hashtype_tbl[new_value].modename, new_value); |
| 500 | } |
| 501 | out: |
| 502 | return ret; |
| 503 | } |
| 504 | static CLASS_DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR, bonding_show_xmit_hash, bonding_store_xmit_hash); |
| 505 | |
| 506 | /* |
| 507 | * Show and set the arp timer interval. There are two tricky bits |
| 508 | * here. First, if ARP monitoring is activated, then we must disable |
| 509 | * MII monitoring. Second, if the ARP timer isn't running, we must |
| 510 | * start it. |
| 511 | */ |
| 512 | static ssize_t bonding_show_arp_interval(struct class_device *cd, char *buf) |
| 513 | { |
| 514 | struct bonding *bond = to_bond(cd); |
| 515 | |
| 516 | return sprintf(buf, "%d\n", bond->params.arp_interval) + 1; |
| 517 | } |
| 518 | |
| 519 | static ssize_t bonding_store_arp_interval(struct class_device *cd, const char *buf, size_t count) |
| 520 | { |
| 521 | int new_value, ret = count; |
| 522 | struct bonding *bond = to_bond(cd); |
| 523 | |
| 524 | if (sscanf(buf, "%d", &new_value) != 1) { |
| 525 | printk(KERN_ERR DRV_NAME |
| 526 | ": %s: no arp_interval value specified.\n", |
| 527 | bond->dev->name); |
| 528 | ret = -EINVAL; |
| 529 | goto out; |
| 530 | } |
| 531 | if (new_value < 0) { |
| 532 | printk(KERN_ERR DRV_NAME |
| 533 | ": %s: Invalid arp_interval value %d not in range 1-%d; rejected.\n", |
| 534 | bond->dev->name, new_value, INT_MAX); |
| 535 | ret = -EINVAL; |
| 536 | goto out; |
| 537 | } |
| 538 | |
| 539 | printk(KERN_INFO DRV_NAME |
| 540 | ": %s: Setting ARP monitoring interval to %d.\n", |
| 541 | bond->dev->name, new_value); |
| 542 | bond->params.arp_interval = new_value; |
| 543 | if (bond->params.miimon) { |
| 544 | printk(KERN_INFO DRV_NAME |
| 545 | ": %s: ARP monitoring cannot be used with MII monitoring. " |
| 546 | "%s Disabling MII monitoring.\n", |
| 547 | bond->dev->name, bond->dev->name); |
| 548 | bond->params.miimon = 0; |
| 549 | /* Kill MII timer, else it brings bond's link down */ |
| 550 | if (bond->arp_timer.function) { |
| 551 | printk(KERN_INFO DRV_NAME |
| 552 | ": %s: Kill MII timer, else it brings bond's link down...\n", |
| 553 | bond->dev->name); |
| 554 | del_timer_sync(&bond->mii_timer); |
| 555 | } |
| 556 | } |
| 557 | if (!bond->params.arp_targets[0]) { |
| 558 | printk(KERN_INFO DRV_NAME |
| 559 | ": %s: ARP monitoring has been set up, " |
| 560 | "but no ARP targets have been specified.\n", |
| 561 | bond->dev->name); |
| 562 | } |
| 563 | if (bond->dev->flags & IFF_UP) { |
| 564 | /* If the interface is up, we may need to fire off |
| 565 | * the ARP timer. If the interface is down, the |
| 566 | * timer will get fired off when the open function |
| 567 | * is called. |
| 568 | */ |
| 569 | if (bond->arp_timer.function) { |
| 570 | /* The timer's already set up, so fire it off */ |
| 571 | mod_timer(&bond->arp_timer, jiffies + 1); |
| 572 | } else { |
| 573 | /* Set up the timer. */ |
| 574 | init_timer(&bond->arp_timer); |
| 575 | bond->arp_timer.expires = jiffies + 1; |
| 576 | bond->arp_timer.data = |
| 577 | (unsigned long) bond->dev; |
| 578 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) { |
| 579 | bond->arp_timer.function = |
| 580 | (void *) |
| 581 | &bond_activebackup_arp_mon; |
| 582 | } else { |
| 583 | bond->arp_timer.function = |
| 584 | (void *) |
| 585 | &bond_loadbalance_arp_mon; |
| 586 | } |
| 587 | add_timer(&bond->arp_timer); |
| 588 | } |
| 589 | } |
| 590 | |
| 591 | out: |
| 592 | return ret; |
| 593 | } |
| 594 | static CLASS_DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR , bonding_show_arp_interval, bonding_store_arp_interval); |
| 595 | |
| 596 | /* |
| 597 | * Show and set the arp targets. |
| 598 | */ |
| 599 | static ssize_t bonding_show_arp_targets(struct class_device *cd, char *buf) |
| 600 | { |
| 601 | int i, res = 0; |
| 602 | struct bonding *bond = to_bond(cd); |
| 603 | |
| 604 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { |
| 605 | if (bond->params.arp_targets[i]) |
| 606 | res += sprintf(buf + res, "%u.%u.%u.%u ", |
| 607 | NIPQUAD(bond->params.arp_targets[i])); |
| 608 | } |
| 609 | if (res) |
| 610 | res--; /* eat the leftover space */ |
| 611 | res += sprintf(buf + res, "\n"); |
| 612 | res++; |
| 613 | return res; |
| 614 | } |
| 615 | |
| 616 | static ssize_t bonding_store_arp_targets(struct class_device *cd, const char *buf, size_t count) |
| 617 | { |
| 618 | u32 newtarget; |
| 619 | int i = 0, done = 0, ret = count; |
| 620 | struct bonding *bond = to_bond(cd); |
| 621 | u32 *targets; |
| 622 | |
| 623 | targets = bond->params.arp_targets; |
| 624 | newtarget = in_aton(buf + 1); |
| 625 | /* look for adds */ |
| 626 | if (buf[0] == '+') { |
| 627 | if ((newtarget == 0) || (newtarget == INADDR_BROADCAST)) { |
| 628 | printk(KERN_ERR DRV_NAME |
| 629 | ": %s: invalid ARP target %u.%u.%u.%u specified for addition\n", |
| 630 | bond->dev->name, NIPQUAD(newtarget)); |
| 631 | ret = -EINVAL; |
| 632 | goto out; |
| 633 | } |
| 634 | /* look for an empty slot to put the target in, and check for dupes */ |
| 635 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
| 636 | if (targets[i] == newtarget) { /* duplicate */ |
| 637 | printk(KERN_ERR DRV_NAME |
| 638 | ": %s: ARP target %u.%u.%u.%u is already present\n", |
| 639 | bond->dev->name, NIPQUAD(newtarget)); |
| 640 | if (done) |
| 641 | targets[i] = 0; |
| 642 | ret = -EINVAL; |
| 643 | goto out; |
| 644 | } |
| 645 | if (targets[i] == 0 && !done) { |
| 646 | printk(KERN_INFO DRV_NAME |
| 647 | ": %s: adding ARP target %d.%d.%d.%d.\n", |
| 648 | bond->dev->name, NIPQUAD(newtarget)); |
| 649 | done = 1; |
| 650 | targets[i] = newtarget; |
| 651 | } |
| 652 | } |
| 653 | if (!done) { |
| 654 | printk(KERN_ERR DRV_NAME |
| 655 | ": %s: ARP target table is full!\n", |
| 656 | bond->dev->name); |
| 657 | ret = -EINVAL; |
| 658 | goto out; |
| 659 | } |
| 660 | |
| 661 | } |
| 662 | else if (buf[0] == '-') { |
| 663 | if ((newtarget == 0) || (newtarget == INADDR_BROADCAST)) { |
| 664 | printk(KERN_ERR DRV_NAME |
| 665 | ": %s: invalid ARP target %d.%d.%d.%d specified for removal\n", |
| 666 | bond->dev->name, NIPQUAD(newtarget)); |
| 667 | ret = -EINVAL; |
| 668 | goto out; |
| 669 | } |
| 670 | |
| 671 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
| 672 | if (targets[i] == newtarget) { |
| 673 | printk(KERN_INFO DRV_NAME |
| 674 | ": %s: removing ARP target %d.%d.%d.%d.\n", |
| 675 | bond->dev->name, NIPQUAD(newtarget)); |
| 676 | targets[i] = 0; |
| 677 | done = 1; |
| 678 | } |
| 679 | } |
| 680 | if (!done) { |
| 681 | printk(KERN_INFO DRV_NAME |
| 682 | ": %s: unable to remove nonexistent ARP target %d.%d.%d.%d.\n", |
| 683 | bond->dev->name, NIPQUAD(newtarget)); |
| 684 | ret = -EINVAL; |
| 685 | goto out; |
| 686 | } |
| 687 | } |
| 688 | else { |
| 689 | printk(KERN_ERR DRV_NAME ": no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n", |
| 690 | bond->dev->name); |
| 691 | ret = -EPERM; |
| 692 | goto out; |
| 693 | } |
| 694 | |
| 695 | out: |
| 696 | return ret; |
| 697 | } |
| 698 | static CLASS_DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets); |
| 699 | |
| 700 | /* |
| 701 | * Show and set the up and down delays. These must be multiples of the |
| 702 | * MII monitoring value, and are stored internally as the multiplier. |
| 703 | * Thus, we must translate to MS for the real world. |
| 704 | */ |
| 705 | static ssize_t bonding_show_downdelay(struct class_device *cd, char *buf) |
| 706 | { |
| 707 | struct bonding *bond = to_bond(cd); |
| 708 | |
| 709 | return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon) + 1; |
| 710 | } |
| 711 | |
| 712 | static ssize_t bonding_store_downdelay(struct class_device *cd, const char *buf, size_t count) |
| 713 | { |
| 714 | int new_value, ret = count; |
| 715 | struct bonding *bond = to_bond(cd); |
| 716 | |
| 717 | if (!(bond->params.miimon)) { |
| 718 | printk(KERN_ERR DRV_NAME |
| 719 | ": %s: Unable to set down delay as MII monitoring is disabled\n", |
| 720 | bond->dev->name); |
| 721 | ret = -EPERM; |
| 722 | goto out; |
| 723 | } |
| 724 | |
| 725 | if (sscanf(buf, "%d", &new_value) != 1) { |
| 726 | printk(KERN_ERR DRV_NAME |
| 727 | ": %s: no down delay value specified.\n", |
| 728 | bond->dev->name); |
| 729 | ret = -EINVAL; |
| 730 | goto out; |
| 731 | } |
| 732 | if (new_value < 0) { |
| 733 | printk(KERN_ERR DRV_NAME |
| 734 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", |
| 735 | bond->dev->name, new_value, 1, INT_MAX); |
| 736 | ret = -EINVAL; |
| 737 | goto out; |
| 738 | } else { |
| 739 | if ((new_value % bond->params.miimon) != 0) { |
| 740 | printk(KERN_WARNING DRV_NAME |
| 741 | ": %s: Warning: down delay (%d) is not a multiple " |
| 742 | "of miimon (%d), delay rounded to %d ms\n", |
| 743 | bond->dev->name, new_value, bond->params.miimon, |
| 744 | (new_value / bond->params.miimon) * |
| 745 | bond->params.miimon); |
| 746 | } |
| 747 | bond->params.downdelay = new_value / bond->params.miimon; |
| 748 | printk(KERN_INFO DRV_NAME ": %s: Setting down delay to %d.\n", |
| 749 | bond->dev->name, bond->params.downdelay * bond->params.miimon); |
| 750 | |
| 751 | } |
| 752 | |
| 753 | out: |
| 754 | return ret; |
| 755 | } |
| 756 | static CLASS_DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR , bonding_show_downdelay, bonding_store_downdelay); |
| 757 | |
| 758 | static ssize_t bonding_show_updelay(struct class_device *cd, char *buf) |
| 759 | { |
| 760 | struct bonding *bond = to_bond(cd); |
| 761 | |
| 762 | return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon) + 1; |
| 763 | |
| 764 | } |
| 765 | |
| 766 | static ssize_t bonding_store_updelay(struct class_device *cd, const char *buf, size_t count) |
| 767 | { |
| 768 | int new_value, ret = count; |
| 769 | struct bonding *bond = to_bond(cd); |
| 770 | |
| 771 | if (!(bond->params.miimon)) { |
| 772 | printk(KERN_ERR DRV_NAME |
| 773 | ": %s: Unable to set up delay as MII monitoring is disabled\n", |
| 774 | bond->dev->name); |
| 775 | ret = -EPERM; |
| 776 | goto out; |
| 777 | } |
| 778 | |
| 779 | if (sscanf(buf, "%d", &new_value) != 1) { |
| 780 | printk(KERN_ERR DRV_NAME |
| 781 | ": %s: no up delay value specified.\n", |
| 782 | bond->dev->name); |
| 783 | ret = -EINVAL; |
| 784 | goto out; |
| 785 | } |
| 786 | if (new_value < 0) { |
| 787 | printk(KERN_ERR DRV_NAME |
| 788 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", |
| 789 | bond->dev->name, new_value, 1, INT_MAX); |
| 790 | ret = -EINVAL; |
| 791 | goto out; |
| 792 | } else { |
| 793 | if ((new_value % bond->params.miimon) != 0) { |
| 794 | printk(KERN_WARNING DRV_NAME |
| 795 | ": %s: Warning: up delay (%d) is not a multiple " |
| 796 | "of miimon (%d), updelay rounded to %d ms\n", |
| 797 | bond->dev->name, new_value, bond->params.miimon, |
| 798 | (new_value / bond->params.miimon) * |
| 799 | bond->params.miimon); |
| 800 | } |
| 801 | bond->params.updelay = new_value / bond->params.miimon; |
| 802 | printk(KERN_INFO DRV_NAME ": %s: Setting up delay to %d.\n", |
| 803 | bond->dev->name, bond->params.updelay * bond->params.miimon); |
| 804 | |
| 805 | } |
| 806 | |
| 807 | out: |
| 808 | return ret; |
| 809 | } |
| 810 | static CLASS_DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR , bonding_show_updelay, bonding_store_updelay); |
| 811 | |
| 812 | /* |
| 813 | * Show and set the LACP interval. Interface must be down, and the mode |
| 814 | * must be set to 802.3ad mode. |
| 815 | */ |
| 816 | static ssize_t bonding_show_lacp(struct class_device *cd, char *buf) |
| 817 | { |
| 818 | struct bonding *bond = to_bond(cd); |
| 819 | |
| 820 | return sprintf(buf, "%s %d\n", |
| 821 | bond_lacp_tbl[bond->params.lacp_fast].modename, |
| 822 | bond->params.lacp_fast) + 1; |
| 823 | } |
| 824 | |
| 825 | static ssize_t bonding_store_lacp(struct class_device *cd, const char *buf, size_t count) |
| 826 | { |
| 827 | int new_value, ret = count; |
| 828 | struct bonding *bond = to_bond(cd); |
| 829 | |
| 830 | if (bond->dev->flags & IFF_UP) { |
| 831 | printk(KERN_ERR DRV_NAME |
| 832 | ": %s: Unable to update LACP rate because interface is up.\n", |
| 833 | bond->dev->name); |
| 834 | ret = -EPERM; |
| 835 | goto out; |
| 836 | } |
| 837 | |
| 838 | if (bond->params.mode != BOND_MODE_8023AD) { |
| 839 | printk(KERN_ERR DRV_NAME |
| 840 | ": %s: Unable to update LACP rate because bond is not in 802.3ad mode.\n", |
| 841 | bond->dev->name); |
| 842 | ret = -EPERM; |
| 843 | goto out; |
| 844 | } |
| 845 | |
| 846 | new_value = bond_parse_parm((char *)buf, bond_lacp_tbl); |
| 847 | |
| 848 | if ((new_value == 1) || (new_value == 0)) { |
| 849 | bond->params.lacp_fast = new_value; |
| 850 | printk(KERN_INFO DRV_NAME |
| 851 | ": %s: Setting LACP rate to %s (%d).\n", |
| 852 | bond->dev->name, bond_lacp_tbl[new_value].modename, new_value); |
| 853 | } else { |
| 854 | printk(KERN_ERR DRV_NAME |
| 855 | ": %s: Ignoring invalid LACP rate value %.*s.\n", |
| 856 | bond->dev->name, (int)strlen(buf) - 1, buf); |
| 857 | ret = -EINVAL; |
| 858 | } |
| 859 | out: |
| 860 | return ret; |
| 861 | } |
| 862 | static CLASS_DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR, bonding_show_lacp, bonding_store_lacp); |
| 863 | |
| 864 | /* |
| 865 | * Show and set the MII monitor interval. There are two tricky bits |
| 866 | * here. First, if MII monitoring is activated, then we must disable |
| 867 | * ARP monitoring. Second, if the timer isn't running, we must |
| 868 | * start it. |
| 869 | */ |
| 870 | static ssize_t bonding_show_miimon(struct class_device *cd, char *buf) |
| 871 | { |
| 872 | struct bonding *bond = to_bond(cd); |
| 873 | |
| 874 | return sprintf(buf, "%d\n", bond->params.miimon) + 1; |
| 875 | } |
| 876 | |
| 877 | static ssize_t bonding_store_miimon(struct class_device *cd, const char *buf, size_t count) |
| 878 | { |
| 879 | int new_value, ret = count; |
| 880 | struct bonding *bond = to_bond(cd); |
| 881 | |
| 882 | if (sscanf(buf, "%d", &new_value) != 1) { |
| 883 | printk(KERN_ERR DRV_NAME |
| 884 | ": %s: no miimon value specified.\n", |
| 885 | bond->dev->name); |
| 886 | ret = -EINVAL; |
| 887 | goto out; |
| 888 | } |
| 889 | if (new_value < 0) { |
| 890 | printk(KERN_ERR DRV_NAME |
| 891 | ": %s: Invalid miimon value %d not in range %d-%d; rejected.\n", |
| 892 | bond->dev->name, new_value, 1, INT_MAX); |
| 893 | ret = -EINVAL; |
| 894 | goto out; |
| 895 | } else { |
| 896 | printk(KERN_INFO DRV_NAME |
| 897 | ": %s: Setting MII monitoring interval to %d.\n", |
| 898 | bond->dev->name, new_value); |
| 899 | bond->params.miimon = new_value; |
| 900 | if(bond->params.updelay) |
| 901 | printk(KERN_INFO DRV_NAME |
| 902 | ": %s: Note: Updating updelay (to %d) " |
| 903 | "since it is a multiple of the miimon value.\n", |
| 904 | bond->dev->name, |
| 905 | bond->params.updelay * bond->params.miimon); |
| 906 | if(bond->params.downdelay) |
| 907 | printk(KERN_INFO DRV_NAME |
| 908 | ": %s: Note: Updating downdelay (to %d) " |
| 909 | "since it is a multiple of the miimon value.\n", |
| 910 | bond->dev->name, |
| 911 | bond->params.downdelay * bond->params.miimon); |
| 912 | if (bond->params.arp_interval) { |
| 913 | printk(KERN_INFO DRV_NAME |
| 914 | ": %s: MII monitoring cannot be used with " |
| 915 | "ARP monitoring. Disabling ARP monitoring...\n", |
| 916 | bond->dev->name); |
| 917 | bond->params.arp_interval = 0; |
| 918 | /* Kill ARP timer, else it brings bond's link down */ |
| 919 | if (bond->mii_timer.function) { |
| 920 | printk(KERN_INFO DRV_NAME |
| 921 | ": %s: Kill ARP timer, else it brings bond's link down...\n", |
| 922 | bond->dev->name); |
| 923 | del_timer_sync(&bond->arp_timer); |
| 924 | } |
| 925 | } |
| 926 | |
| 927 | if (bond->dev->flags & IFF_UP) { |
| 928 | /* If the interface is up, we may need to fire off |
| 929 | * the MII timer. If the interface is down, the |
| 930 | * timer will get fired off when the open function |
| 931 | * is called. |
| 932 | */ |
| 933 | if (bond->mii_timer.function) { |
| 934 | /* The timer's already set up, so fire it off */ |
| 935 | mod_timer(&bond->mii_timer, jiffies + 1); |
| 936 | } else { |
| 937 | /* Set up the timer. */ |
| 938 | init_timer(&bond->mii_timer); |
| 939 | bond->mii_timer.expires = jiffies + 1; |
| 940 | bond->mii_timer.data = |
| 941 | (unsigned long) bond->dev; |
| 942 | bond->mii_timer.function = |
| 943 | (void *) &bond_mii_monitor; |
| 944 | add_timer(&bond->mii_timer); |
| 945 | } |
| 946 | } |
| 947 | } |
| 948 | out: |
| 949 | return ret; |
| 950 | } |
| 951 | static CLASS_DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR, bonding_show_miimon, bonding_store_miimon); |
| 952 | |
| 953 | /* |
| 954 | * Show and set the primary slave. The store function is much |
| 955 | * simpler than bonding_store_slaves function because it only needs to |
| 956 | * handle one interface name. |
| 957 | * The bond must be a mode that supports a primary for this be |
| 958 | * set. |
| 959 | */ |
| 960 | static ssize_t bonding_show_primary(struct class_device *cd, char *buf) |
| 961 | { |
| 962 | int count = 0; |
| 963 | struct bonding *bond = to_bond(cd); |
| 964 | |
| 965 | if (bond->primary_slave) |
| 966 | count = sprintf(buf, "%s\n", bond->primary_slave->dev->name) + 1; |
| 967 | else |
| 968 | count = sprintf(buf, "\n") + 1; |
| 969 | |
| 970 | return count; |
| 971 | } |
| 972 | |
| 973 | static ssize_t bonding_store_primary(struct class_device *cd, const char *buf, size_t count) |
| 974 | { |
| 975 | int i; |
| 976 | struct slave *slave; |
| 977 | struct bonding *bond = to_bond(cd); |
| 978 | |
| 979 | write_lock_bh(&bond->lock); |
| 980 | if (!USES_PRIMARY(bond->params.mode)) { |
| 981 | printk(KERN_INFO DRV_NAME |
| 982 | ": %s: Unable to set primary slave; %s is in mode %d\n", |
| 983 | bond->dev->name, bond->dev->name, bond->params.mode); |
| 984 | } else { |
| 985 | bond_for_each_slave(bond, slave, i) { |
| 986 | if (strnicmp |
| 987 | (slave->dev->name, buf, |
| 988 | strlen(slave->dev->name)) == 0) { |
| 989 | printk(KERN_INFO DRV_NAME |
| 990 | ": %s: Setting %s as primary slave.\n", |
| 991 | bond->dev->name, slave->dev->name); |
| 992 | bond->primary_slave = slave; |
| 993 | bond_select_active_slave(bond); |
| 994 | goto out; |
| 995 | } |
| 996 | } |
| 997 | |
| 998 | /* if we got here, then we didn't match the name of any slave */ |
| 999 | |
| 1000 | if (strlen(buf) == 0 || buf[0] == '\n') { |
| 1001 | printk(KERN_INFO DRV_NAME |
| 1002 | ": %s: Setting primary slave to None.\n", |
| 1003 | bond->dev->name); |
Luiz Fernando Capitulino | 3418db7 | 2006-02-01 00:54:34 -0800 | [diff] [blame] | 1004 | bond->primary_slave = NULL; |
Mitch Williams | b76cdba | 2005-11-09 10:36:41 -0800 | [diff] [blame] | 1005 | bond_select_active_slave(bond); |
| 1006 | } else { |
| 1007 | printk(KERN_INFO DRV_NAME |
| 1008 | ": %s: Unable to set %.*s as primary slave as it is not a slave.\n", |
| 1009 | bond->dev->name, (int)strlen(buf) - 1, buf); |
| 1010 | } |
| 1011 | } |
| 1012 | out: |
| 1013 | write_unlock_bh(&bond->lock); |
| 1014 | return count; |
| 1015 | } |
| 1016 | static CLASS_DEVICE_ATTR(primary, S_IRUGO | S_IWUSR, bonding_show_primary, bonding_store_primary); |
| 1017 | |
| 1018 | /* |
| 1019 | * Show and set the use_carrier flag. |
| 1020 | */ |
| 1021 | static ssize_t bonding_show_carrier(struct class_device *cd, char *buf) |
| 1022 | { |
| 1023 | struct bonding *bond = to_bond(cd); |
| 1024 | |
| 1025 | return sprintf(buf, "%d\n", bond->params.use_carrier) + 1; |
| 1026 | } |
| 1027 | |
| 1028 | static ssize_t bonding_store_carrier(struct class_device *cd, const char *buf, size_t count) |
| 1029 | { |
| 1030 | int new_value, ret = count; |
| 1031 | struct bonding *bond = to_bond(cd); |
| 1032 | |
| 1033 | |
| 1034 | if (sscanf(buf, "%d", &new_value) != 1) { |
| 1035 | printk(KERN_ERR DRV_NAME |
| 1036 | ": %s: no use_carrier value specified.\n", |
| 1037 | bond->dev->name); |
| 1038 | ret = -EINVAL; |
| 1039 | goto out; |
| 1040 | } |
| 1041 | if ((new_value == 0) || (new_value == 1)) { |
| 1042 | bond->params.use_carrier = new_value; |
| 1043 | printk(KERN_INFO DRV_NAME ": %s: Setting use_carrier to %d.\n", |
| 1044 | bond->dev->name, new_value); |
| 1045 | } else { |
| 1046 | printk(KERN_INFO DRV_NAME |
| 1047 | ": %s: Ignoring invalid use_carrier value %d.\n", |
| 1048 | bond->dev->name, new_value); |
| 1049 | } |
| 1050 | out: |
| 1051 | return count; |
| 1052 | } |
| 1053 | static CLASS_DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR, bonding_show_carrier, bonding_store_carrier); |
| 1054 | |
| 1055 | |
| 1056 | /* |
| 1057 | * Show and set currently active_slave. |
| 1058 | */ |
| 1059 | static ssize_t bonding_show_active_slave(struct class_device *cd, char *buf) |
| 1060 | { |
| 1061 | struct slave *curr; |
| 1062 | struct bonding *bond = to_bond(cd); |
| 1063 | int count; |
| 1064 | |
| 1065 | |
| 1066 | read_lock(&bond->curr_slave_lock); |
| 1067 | curr = bond->curr_active_slave; |
| 1068 | read_unlock(&bond->curr_slave_lock); |
| 1069 | |
| 1070 | if (USES_PRIMARY(bond->params.mode) && curr) |
| 1071 | count = sprintf(buf, "%s\n", curr->dev->name) + 1; |
| 1072 | else |
| 1073 | count = sprintf(buf, "\n") + 1; |
| 1074 | return count; |
| 1075 | } |
| 1076 | |
| 1077 | static ssize_t bonding_store_active_slave(struct class_device *cd, const char *buf, size_t count) |
| 1078 | { |
| 1079 | int i; |
| 1080 | struct slave *slave; |
| 1081 | struct slave *old_active = NULL; |
| 1082 | struct slave *new_active = NULL; |
| 1083 | struct bonding *bond = to_bond(cd); |
| 1084 | |
| 1085 | write_lock_bh(&bond->lock); |
| 1086 | if (!USES_PRIMARY(bond->params.mode)) { |
| 1087 | printk(KERN_INFO DRV_NAME |
| 1088 | ": %s: Unable to change active slave; %s is in mode %d\n", |
| 1089 | bond->dev->name, bond->dev->name, bond->params.mode); |
| 1090 | } else { |
| 1091 | bond_for_each_slave(bond, slave, i) { |
| 1092 | if (strnicmp |
| 1093 | (slave->dev->name, buf, |
| 1094 | strlen(slave->dev->name)) == 0) { |
| 1095 | old_active = bond->curr_active_slave; |
| 1096 | new_active = slave; |
| 1097 | if (new_active && (new_active == old_active)) { |
| 1098 | /* do nothing */ |
| 1099 | printk(KERN_INFO DRV_NAME |
| 1100 | ": %s: %s is already the current active slave.\n", |
| 1101 | bond->dev->name, slave->dev->name); |
| 1102 | goto out; |
| 1103 | } |
| 1104 | else { |
| 1105 | if ((new_active) && |
| 1106 | (old_active) && |
| 1107 | (new_active->link == BOND_LINK_UP) && |
| 1108 | IS_UP(new_active->dev)) { |
| 1109 | printk(KERN_INFO DRV_NAME |
| 1110 | ": %s: Setting %s as active slave.\n", |
| 1111 | bond->dev->name, slave->dev->name); |
| 1112 | bond_change_active_slave(bond, new_active); |
| 1113 | } |
| 1114 | else { |
| 1115 | printk(KERN_INFO DRV_NAME |
| 1116 | ": %s: Could not set %s as active slave; " |
| 1117 | "either %s is down or the link is down.\n", |
| 1118 | bond->dev->name, slave->dev->name, |
| 1119 | slave->dev->name); |
| 1120 | } |
| 1121 | goto out; |
| 1122 | } |
| 1123 | } |
| 1124 | } |
| 1125 | |
| 1126 | /* if we got here, then we didn't match the name of any slave */ |
| 1127 | |
| 1128 | if (strlen(buf) == 0 || buf[0] == '\n') { |
| 1129 | printk(KERN_INFO DRV_NAME |
| 1130 | ": %s: Setting active slave to None.\n", |
| 1131 | bond->dev->name); |
Luiz Fernando Capitulino | 3418db7 | 2006-02-01 00:54:34 -0800 | [diff] [blame] | 1132 | bond->primary_slave = NULL; |
Mitch Williams | b76cdba | 2005-11-09 10:36:41 -0800 | [diff] [blame] | 1133 | bond_select_active_slave(bond); |
| 1134 | } else { |
| 1135 | printk(KERN_INFO DRV_NAME |
| 1136 | ": %s: Unable to set %.*s as active slave as it is not a slave.\n", |
| 1137 | bond->dev->name, (int)strlen(buf) - 1, buf); |
| 1138 | } |
| 1139 | } |
| 1140 | out: |
| 1141 | write_unlock_bh(&bond->lock); |
| 1142 | return count; |
| 1143 | |
| 1144 | } |
| 1145 | static CLASS_DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR, bonding_show_active_slave, bonding_store_active_slave); |
| 1146 | |
| 1147 | |
| 1148 | /* |
| 1149 | * Show link status of the bond interface. |
| 1150 | */ |
| 1151 | static ssize_t bonding_show_mii_status(struct class_device *cd, char *buf) |
| 1152 | { |
| 1153 | struct slave *curr; |
| 1154 | struct bonding *bond = to_bond(cd); |
| 1155 | |
| 1156 | read_lock(&bond->curr_slave_lock); |
| 1157 | curr = bond->curr_active_slave; |
| 1158 | read_unlock(&bond->curr_slave_lock); |
| 1159 | |
| 1160 | return sprintf(buf, "%s\n", (curr) ? "up" : "down") + 1; |
| 1161 | } |
| 1162 | static CLASS_DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL); |
| 1163 | |
| 1164 | |
| 1165 | /* |
| 1166 | * Show current 802.3ad aggregator ID. |
| 1167 | */ |
| 1168 | static ssize_t bonding_show_ad_aggregator(struct class_device *cd, char *buf) |
| 1169 | { |
| 1170 | int count = 0; |
| 1171 | struct bonding *bond = to_bond(cd); |
| 1172 | |
| 1173 | if (bond->params.mode == BOND_MODE_8023AD) { |
| 1174 | struct ad_info ad_info; |
| 1175 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.aggregator_id) + 1; |
| 1176 | } |
| 1177 | else |
| 1178 | count = sprintf(buf, "\n") + 1; |
| 1179 | |
| 1180 | return count; |
| 1181 | } |
| 1182 | static CLASS_DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL); |
| 1183 | |
| 1184 | |
| 1185 | /* |
| 1186 | * Show number of active 802.3ad ports. |
| 1187 | */ |
| 1188 | static ssize_t bonding_show_ad_num_ports(struct class_device *cd, char *buf) |
| 1189 | { |
| 1190 | int count = 0; |
| 1191 | struct bonding *bond = to_bond(cd); |
| 1192 | |
| 1193 | if (bond->params.mode == BOND_MODE_8023AD) { |
| 1194 | struct ad_info ad_info; |
| 1195 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0: ad_info.ports) + 1; |
| 1196 | } |
| 1197 | else |
| 1198 | count = sprintf(buf, "\n") + 1; |
| 1199 | |
| 1200 | return count; |
| 1201 | } |
| 1202 | static CLASS_DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL); |
| 1203 | |
| 1204 | |
| 1205 | /* |
| 1206 | * Show current 802.3ad actor key. |
| 1207 | */ |
| 1208 | static ssize_t bonding_show_ad_actor_key(struct class_device *cd, char *buf) |
| 1209 | { |
| 1210 | int count = 0; |
| 1211 | struct bonding *bond = to_bond(cd); |
| 1212 | |
| 1213 | if (bond->params.mode == BOND_MODE_8023AD) { |
| 1214 | struct ad_info ad_info; |
| 1215 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.actor_key) + 1; |
| 1216 | } |
| 1217 | else |
| 1218 | count = sprintf(buf, "\n") + 1; |
| 1219 | |
| 1220 | return count; |
| 1221 | } |
| 1222 | static CLASS_DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL); |
| 1223 | |
| 1224 | |
| 1225 | /* |
| 1226 | * Show current 802.3ad partner key. |
| 1227 | */ |
| 1228 | static ssize_t bonding_show_ad_partner_key(struct class_device *cd, char *buf) |
| 1229 | { |
| 1230 | int count = 0; |
| 1231 | struct bonding *bond = to_bond(cd); |
| 1232 | |
| 1233 | if (bond->params.mode == BOND_MODE_8023AD) { |
| 1234 | struct ad_info ad_info; |
| 1235 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.partner_key) + 1; |
| 1236 | } |
| 1237 | else |
| 1238 | count = sprintf(buf, "\n") + 1; |
| 1239 | |
| 1240 | return count; |
| 1241 | } |
| 1242 | static CLASS_DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL); |
| 1243 | |
| 1244 | |
| 1245 | /* |
| 1246 | * Show current 802.3ad partner mac. |
| 1247 | */ |
| 1248 | static ssize_t bonding_show_ad_partner_mac(struct class_device *cd, char *buf) |
| 1249 | { |
| 1250 | int count = 0; |
| 1251 | struct bonding *bond = to_bond(cd); |
| 1252 | |
| 1253 | if (bond->params.mode == BOND_MODE_8023AD) { |
| 1254 | struct ad_info ad_info; |
| 1255 | if (!bond_3ad_get_active_agg_info(bond, &ad_info)) { |
| 1256 | count = sprintf(buf,"%02x:%02x:%02x:%02x:%02x:%02x\n", |
| 1257 | ad_info.partner_system[0], |
| 1258 | ad_info.partner_system[1], |
| 1259 | ad_info.partner_system[2], |
| 1260 | ad_info.partner_system[3], |
| 1261 | ad_info.partner_system[4], |
| 1262 | ad_info.partner_system[5]) + 1; |
| 1263 | } |
| 1264 | } |
| 1265 | else |
| 1266 | count = sprintf(buf, "\n") + 1; |
| 1267 | |
| 1268 | return count; |
| 1269 | } |
| 1270 | static CLASS_DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL); |
| 1271 | |
| 1272 | |
| 1273 | |
| 1274 | static struct attribute *per_bond_attrs[] = { |
| 1275 | &class_device_attr_slaves.attr, |
| 1276 | &class_device_attr_mode.attr, |
| 1277 | &class_device_attr_arp_interval.attr, |
| 1278 | &class_device_attr_arp_ip_target.attr, |
| 1279 | &class_device_attr_downdelay.attr, |
| 1280 | &class_device_attr_updelay.attr, |
| 1281 | &class_device_attr_lacp_rate.attr, |
| 1282 | &class_device_attr_xmit_hash_policy.attr, |
| 1283 | &class_device_attr_miimon.attr, |
| 1284 | &class_device_attr_primary.attr, |
| 1285 | &class_device_attr_use_carrier.attr, |
| 1286 | &class_device_attr_active_slave.attr, |
| 1287 | &class_device_attr_mii_status.attr, |
| 1288 | &class_device_attr_ad_aggregator.attr, |
| 1289 | &class_device_attr_ad_num_ports.attr, |
| 1290 | &class_device_attr_ad_actor_key.attr, |
| 1291 | &class_device_attr_ad_partner_key.attr, |
| 1292 | &class_device_attr_ad_partner_mac.attr, |
| 1293 | NULL, |
| 1294 | }; |
| 1295 | |
| 1296 | static struct attribute_group bonding_group = { |
| 1297 | .name = "bonding", |
| 1298 | .attrs = per_bond_attrs, |
| 1299 | }; |
| 1300 | |
| 1301 | /* |
| 1302 | * Initialize sysfs. This sets up the bonding_masters file in |
| 1303 | * /sys/class/net. |
| 1304 | */ |
| 1305 | int bond_create_sysfs(void) |
| 1306 | { |
| 1307 | int ret = 0; |
| 1308 | struct bonding *firstbond; |
| 1309 | |
| 1310 | init_rwsem(&bonding_rwsem); |
| 1311 | |
| 1312 | /* get the netdev class pointer */ |
| 1313 | firstbond = container_of(bond_dev_list.next, struct bonding, bond_list); |
| 1314 | if (!firstbond) |
| 1315 | return -ENODEV; |
| 1316 | |
| 1317 | netdev_class = firstbond->dev->class_dev.class; |
| 1318 | if (!netdev_class) |
| 1319 | return -ENODEV; |
| 1320 | |
| 1321 | ret = class_create_file(netdev_class, &class_attr_bonding_masters); |
| 1322 | |
| 1323 | return ret; |
| 1324 | |
| 1325 | } |
| 1326 | |
| 1327 | /* |
| 1328 | * Remove /sys/class/net/bonding_masters. |
| 1329 | */ |
| 1330 | void bond_destroy_sysfs(void) |
| 1331 | { |
| 1332 | if (netdev_class) |
| 1333 | class_remove_file(netdev_class, &class_attr_bonding_masters); |
| 1334 | } |
| 1335 | |
| 1336 | /* |
| 1337 | * Initialize sysfs for each bond. This sets up and registers |
| 1338 | * the 'bondctl' directory for each individual bond under /sys/class/net. |
| 1339 | */ |
| 1340 | int bond_create_sysfs_entry(struct bonding *bond) |
| 1341 | { |
| 1342 | struct net_device *dev = bond->dev; |
| 1343 | int err; |
| 1344 | |
| 1345 | err = sysfs_create_group(&(dev->class_dev.kobj), &bonding_group); |
| 1346 | if (err) { |
| 1347 | printk(KERN_EMERG "eek! didn't create group!\n"); |
| 1348 | } |
| 1349 | |
| 1350 | if (expected_refcount < 1) |
| 1351 | expected_refcount = atomic_read(&bond->dev->class_dev.kobj.kref.refcount); |
| 1352 | |
| 1353 | return err; |
| 1354 | } |
| 1355 | /* |
| 1356 | * Remove sysfs entries for each bond. |
| 1357 | */ |
| 1358 | void bond_destroy_sysfs_entry(struct bonding *bond) |
| 1359 | { |
| 1360 | struct net_device *dev = bond->dev; |
| 1361 | |
| 1362 | sysfs_remove_group(&(dev->class_dev.kobj), &bonding_group); |
| 1363 | } |
| 1364 | |