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-rw-r--r--drivers/net/bonding/bond_main.c781
1 files changed, 197 insertions, 584 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 94cec3cf2a1..2582d98ef5c 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -29,466 +29,6 @@
29 * b: if a hw mac address already is there, eth0's hw mac address 29 * b: if a hw mac address already is there, eth0's hw mac address
30 * will then be set from bond0. 30 * will then be set from bond0.
31 * 31 *
32 * v0.1 - first working version.
33 * v0.2 - changed stats to be calculated by summing slaves stats.
34 *
35 * Changes:
36 * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
37 * - fix leaks on failure at bond_init
38 *
39 * 2000/09/30 - Willy Tarreau <willy at meta-x.org>
40 * - added trivial code to release a slave device.
41 * - fixed security bug (CAP_NET_ADMIN not checked)
42 * - implemented MII link monitoring to disable dead links :
43 * All MII capable slaves are checked every <miimon> milliseconds
44 * (100 ms seems good). This value can be changed by passing it to
45 * insmod. A value of zero disables the monitoring (default).
46 * - fixed an infinite loop in bond_xmit_roundrobin() when there's no
47 * good slave.
48 * - made the code hopefully SMP safe
49 *
50 * 2000/10/03 - Willy Tarreau <willy at meta-x.org>
51 * - optimized slave lists based on relevant suggestions from Thomas Davis
52 * - implemented active-backup method to obtain HA with two switches:
53 * stay as long as possible on the same active interface, while we
54 * also monitor the backup one (MII link status) because we want to know
55 * if we are able to switch at any time. ( pass "mode=1" to insmod )
56 * - lots of stress testings because we need it to be more robust than the
57 * wires ! :->
58 *
59 * 2000/10/09 - Willy Tarreau <willy at meta-x.org>
60 * - added up and down delays after link state change.
61 * - optimized the slaves chaining so that when we run forward, we never
62 * repass through the bond itself, but we can find it by searching
63 * backwards. Renders the deletion more difficult, but accelerates the
64 * scan.
65 * - smarter enslaving and releasing.
66 * - finer and more robust SMP locking
67 *
68 * 2000/10/17 - Willy Tarreau <willy at meta-x.org>
69 * - fixed two potential SMP race conditions
70 *
71 * 2000/10/18 - Willy Tarreau <willy at meta-x.org>
72 * - small fixes to the monitoring FSM in case of zero delays
73 * 2000/11/01 - Willy Tarreau <willy at meta-x.org>
74 * - fixed first slave not automatically used in trunk mode.
75 * 2000/11/10 : spelling of "EtherChannel" corrected.
76 * 2000/11/13 : fixed a race condition in case of concurrent accesses to ioctl().
77 * 2000/12/16 : fixed improper usage of rtnl_exlock_nowait().
78 *
79 * 2001/1/3 - Chad N. Tindel <ctindel at ieee dot org>
80 * - The bonding driver now simulates MII status monitoring, just like
81 * a normal network device. It will show that the link is down iff
82 * every slave in the bond shows that their links are down. If at least
83 * one slave is up, the bond's MII status will appear as up.
84 *
85 * 2001/2/7 - Chad N. Tindel <ctindel at ieee dot org>
86 * - Applications can now query the bond from user space to get
87 * information which may be useful. They do this by calling
88 * the BOND_INFO_QUERY ioctl. Once the app knows how many slaves
89 * are in the bond, it can call the BOND_SLAVE_INFO_QUERY ioctl to
90 * get slave specific information (# link failures, etc). See
91 * <linux/if_bonding.h> for more details. The structs of interest
92 * are ifbond and ifslave.
93 *
94 * 2001/4/5 - Chad N. Tindel <ctindel at ieee dot org>
95 * - Ported to 2.4 Kernel
96 *
97 * 2001/5/2 - Jeffrey E. Mast <jeff at mastfamily dot com>
98 * - When a device is detached from a bond, the slave device is no longer
99 * left thinking that is has a master.
100 *
101 * 2001/5/16 - Jeffrey E. Mast <jeff at mastfamily dot com>
102 * - memset did not appropriately initialized the bond rw_locks. Used
103 * rwlock_init to initialize to unlocked state to prevent deadlock when
104 * first attempting a lock
105 * - Called SET_MODULE_OWNER for bond device
106 *
107 * 2001/5/17 - Tim Anderson <tsa at mvista.com>
108 * - 2 paths for releasing for slave release; 1 through ioctl
109 * and 2) through close. Both paths need to release the same way.
110 * - the free slave in bond release is changing slave status before
111 * the free. The netdev_set_master() is intended to change slave state
112 * so it should not be done as part of the release process.
113 * - Simple rule for slave state at release: only the active in A/B and
114 * only one in the trunked case.
115 *
116 * 2001/6/01 - Tim Anderson <tsa at mvista.com>
117 * - Now call dev_close when releasing a slave so it doesn't screw up
118 * out routing table.
119 *
120 * 2001/6/01 - Chad N. Tindel <ctindel at ieee dot org>
121 * - Added /proc support for getting bond and slave information.
122 * Information is in /proc/net/<bond device>/info.
123 * - Changed the locking when calling bond_close to prevent deadlock.
124 *
125 * 2001/8/05 - Janice Girouard <girouard at us.ibm.com>
126 * - correct problem where refcnt of slave is not incremented in bond_ioctl
127 * so the system hangs when halting.
128 * - correct locking problem when unable to malloc in bond_enslave.
129 * - adding bond_xmit_xor logic.
130 * - adding multiple bond device support.
131 *
132 * 2001/8/13 - Erik Habbinga <erik_habbinga at hp dot com>
133 * - correct locking problem with rtnl_exlock_nowait
134 *
135 * 2001/8/23 - Janice Girouard <girouard at us.ibm.com>
136 * - bzero initial dev_bonds, to correct oops
137 * - convert SIOCDEVPRIVATE to new MII ioctl calls
138 *
139 * 2001/9/13 - Takao Indoh <indou dot takao at jp dot fujitsu dot com>
140 * - Add the BOND_CHANGE_ACTIVE ioctl implementation
141 *
142 * 2001/9/14 - Mark Huth <mhuth at mvista dot com>
143 * - Change MII_LINK_READY to not check for end of auto-negotiation,
144 * but only for an up link.
145 *
146 * 2001/9/20 - Chad N. Tindel <ctindel at ieee dot org>
147 * - Add the device field to bonding_t. Previously the net_device
148 * corresponding to a bond wasn't available from the bonding_t
149 * structure.
150 *
151 * 2001/9/25 - Janice Girouard <girouard at us.ibm.com>
152 * - add arp_monitor for active backup mode
153 *
154 * 2001/10/23 - Takao Indoh <indou dot takao at jp dot fujitsu dot com>
155 * - Various memory leak fixes
156 *
157 * 2001/11/5 - Mark Huth <mark dot huth at mvista dot com>
158 * - Don't take rtnl lock in bond_mii_monitor as it deadlocks under
159 * certain hotswap conditions.
160 * Note: this same change may be required in bond_arp_monitor ???
161 * - Remove possibility of calling bond_sethwaddr with NULL slave_dev ptr
162 * - Handle hot swap ethernet interface deregistration events to remove
163 * kernel oops following hot swap of enslaved interface
164 *
165 * 2002/1/2 - Chad N. Tindel <ctindel at ieee dot org>
166 * - Restore original slave flags at release time.
167 *
168 * 2002/02/18 - Erik Habbinga <erik_habbinga at hp dot com>
169 * - bond_release(): calling kfree on our_slave after call to
170 * bond_restore_slave_flags, not before
171 * - bond_enslave(): saving slave flags into original_flags before
172 * call to netdev_set_master, so the IFF_SLAVE flag doesn't end
173 * up in original_flags
174 *
175 * 2002/04/05 - Mark Smith <mark.smith at comdev dot cc> and
176 * Steve Mead <steve.mead at comdev dot cc>
177 * - Port Gleb Natapov's multicast support patchs from 2.4.12
178 * to 2.4.18 adding support for multicast.
179 *
180 * 2002/06/10 - Tony Cureington <tony.cureington * hp_com>
181 * - corrected uninitialized pointer (ifr.ifr_data) in bond_check_dev_link;
182 * actually changed function to use MIIPHY, then MIIREG, and finally
183 * ETHTOOL to determine the link status
184 * - fixed bad ifr_data pointer assignments in bond_ioctl
185 * - corrected mode 1 being reported as active-backup in bond_get_info;
186 * also added text to distinguish type of load balancing (rr or xor)
187 * - change arp_ip_target module param from "1-12s" (array of 12 ptrs)
188 * to "s" (a single ptr)
189 *
190 * 2002/08/30 - Jay Vosburgh <fubar at us dot ibm dot com>
191 * - Removed acquisition of xmit_lock in set_multicast_list; caused
192 * deadlock on SMP (lock is held by caller).
193 * - Revamped SIOCGMIIPHY, SIOCGMIIREG portion of bond_check_dev_link().
194 *
195 * 2002/09/18 - Jay Vosburgh <fubar at us dot ibm dot com>
196 * - Fixed up bond_check_dev_link() (and callers): removed some magic
197 * numbers, banished local MII_ defines, wrapped ioctl calls to
198 * prevent EFAULT errors
199 *
200 * 2002/9/30 - Jay Vosburgh <fubar at us dot ibm dot com>
201 * - make sure the ip target matches the arp_target before saving the
202 * hw address.
203 *
204 * 2002/9/30 - Dan Eisner <eisner at 2robots dot com>
205 * - make sure my_ip is set before taking down the link, since
206 * not all switches respond if the source ip is not set.
207 *
208 * 2002/10/8 - Janice Girouard <girouard at us dot ibm dot com>
209 * - read in the local ip address when enslaving a device
210 * - add primary support
211 * - make sure 2*arp_interval has passed when a new device
212 * is brought on-line before taking it down.
213 *
214 * 2002/09/11 - Philippe De Muyter <phdm at macqel dot be>
215 * - Added bond_xmit_broadcast logic.
216 * - Added bond_mode() support function.
217 *
218 * 2002/10/26 - Laurent Deniel <laurent.deniel at free.fr>
219 * - allow to register multicast addresses only on active slave
220 * (useful in active-backup mode)
221 * - add multicast module parameter
222 * - fix deletion of multicast groups after unloading module
223 *
224 * 2002/11/06 - Kameshwara Rayaprolu <kameshwara.rao * wipro_com>
225 * - Changes to prevent panic from closing the device twice; if we close
226 * the device in bond_release, we must set the original_flags to down
227 * so it won't be closed again by the network layer.
228 *
229 * 2002/11/07 - Tony Cureington <tony.cureington * hp_com>
230 * - Fix arp_target_hw_addr memory leak
231 * - Created activebackup_arp_monitor function to handle arp monitoring
232 * in active backup mode - the bond_arp_monitor had several problems...
233 * such as allowing slaves to tx arps sequentially without any delay
234 * for a response
235 * - Renamed bond_arp_monitor to loadbalance_arp_monitor and re-wrote
236 * this function to just handle arp monitoring in load-balancing mode;
237 * it is a lot more compact now
238 * - Changes to ensure one and only one slave transmits in active-backup
239 * mode
240 * - Robustesize parameters; warn users about bad combinations of
241 * parameters; also if miimon is specified and a network driver does
242 * not support MII or ETHTOOL, inform the user of this
243 * - Changes to support link_failure_count when in arp monitoring mode
244 * - Fix up/down delay reported in /proc
245 * - Added version; log version; make version available from "modinfo -d"
246 * - Fixed problem in bond_check_dev_link - if the first IOCTL (SIOCGMIIPH)
247 * failed, the ETHTOOL ioctl never got a chance
248 *
249 * 2002/11/16 - Laurent Deniel <laurent.deniel at free.fr>
250 * - fix multicast handling in activebackup_arp_monitor
251 * - remove one unnecessary and confusing curr_active_slave == slave test
252 * in activebackup_arp_monitor
253 *
254 * 2002/11/17 - Laurent Deniel <laurent.deniel at free.fr>
255 * - fix bond_slave_info_query when slave_id = num_slaves
256 *
257 * 2002/11/19 - Janice Girouard <girouard at us dot ibm dot com>
258 * - correct ifr_data reference. Update ifr_data reference
259 * to mii_ioctl_data struct values to avoid confusion.
260 *
261 * 2002/11/22 - Bert Barbe <bert.barbe at oracle dot com>
262 * - Add support for multiple arp_ip_target
263 *
264 * 2002/12/13 - Jay Vosburgh <fubar at us dot ibm dot com>
265 * - Changed to allow text strings for mode and multicast, e.g.,
266 * insmod bonding mode=active-backup. The numbers still work.
267 * One change: an invalid choice will cause module load failure,
268 * rather than the previous behavior of just picking one.
269 * - Minor cleanups; got rid of dup ctype stuff, atoi function
270 *
271 * 2003/02/07 - Jay Vosburgh <fubar at us dot ibm dot com>
272 * - Added use_carrier module parameter that causes miimon to
273 * use netif_carrier_ok() test instead of MII/ETHTOOL ioctls.
274 * - Minor cleanups; consolidated ioctl calls to one function.
275 *
276 * 2003/02/07 - Tony Cureington <tony.cureington * hp_com>
277 * - Fix bond_mii_monitor() logic error that could result in
278 * bonding round-robin mode ignoring links after failover/recovery
279 *
280 * 2003/03/17 - Jay Vosburgh <fubar at us dot ibm dot com>
281 * - kmalloc fix (GFP_KERNEL to GFP_ATOMIC) reported by
282 * Shmulik dot Hen at intel.com.
283 * - Based on discussion on mailing list, changed use of
284 * update_slave_cnt(), created wrapper functions for adding/removing
285 * slaves, changed bond_xmit_xor() to check slave_cnt instead of
286 * checking slave and slave->dev (which only worked by accident).
287 * - Misc code cleanup: get arp_send() prototype from header file,
288 * add max_bonds to bonding.txt.
289 *
290 * 2003/03/18 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
291 * Shmulik Hen <shmulik.hen at intel dot com>
292 * - Make sure only bond_attach_slave() and bond_detach_slave() can
293 * manipulate the slave list, including slave_cnt, even when in
294 * bond_release_all().
295 * - Fixed hang in bond_release() with traffic running:
296 * netdev_set_master() must not be called from within the bond lock.
297 *
298 * 2003/03/18 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
299 * Shmulik Hen <shmulik.hen at intel dot com>
300 * - Fixed hang in bond_enslave() with traffic running:
301 * netdev_set_master() must not be called from within the bond lock.
302 *
303 * 2003/03/18 - Amir Noam <amir.noam at intel dot com>
304 * - Added support for getting slave's speed and duplex via ethtool.
305 * Needed for 802.3ad and other future modes.
306 *
307 * 2003/03/18 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
308 * Shmulik Hen <shmulik.hen at intel dot com>
309 * - Enable support of modes that need to use the unique mac address of
310 * each slave.
311 * * bond_enslave(): Moved setting the slave's mac address, and
312 * openning it, from the application to the driver. This breaks
313 * backward comaptibility with old versions of ifenslave that open
314 * the slave before enalsving it !!!.
315 * * bond_release(): The driver also takes care of closing the slave
316 * and restoring its original mac address.
317 * - Removed the code that restores all base driver's flags.
318 * Flags are automatically restored once all undo stages are done
319 * properly.
320 * - Block possibility of enslaving before the master is up. This
321 * prevents putting the system in an unstable state.
322 *
323 * 2003/03/18 - Amir Noam <amir.noam at intel dot com>,
324 * Tsippy Mendelson <tsippy.mendelson at intel dot com> and
325 * Shmulik Hen <shmulik.hen at intel dot com>
326 * - Added support for IEEE 802.3ad Dynamic link aggregation mode.
327 *
328 * 2003/05/01 - Amir Noam <amir.noam at intel dot com>
329 * - Added ABI version control to restore compatibility between
330 * new/old ifenslave and new/old bonding.
331 *
332 * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com>
333 * - Fixed bug in bond_release_all(): save old value of curr_active_slave
334 * before setting it to NULL.
335 * - Changed driver versioning scheme to include version number instead
336 * of release date (that is already in another field). There are 3
337 * fields X.Y.Z where:
338 * X - Major version - big behavior changes
339 * Y - Minor version - addition of features
340 * Z - Extra version - minor changes and bug fixes
341 * The current version is 1.0.0 as a base line.
342 *
343 * 2003/05/01 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
344 * Amir Noam <amir.noam at intel dot com>
345 * - Added support for lacp_rate module param.
346 * - Code beautification and style changes (mainly in comments).
347 * new version - 1.0.1
348 *
349 * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com>
350 * - Based on discussion on mailing list, changed locking scheme
351 * to use lock/unlock or lock_bh/unlock_bh appropriately instead
352 * of lock_irqsave/unlock_irqrestore. The new scheme helps exposing
353 * hidden bugs and solves system hangs that occurred due to the fact
354 * that holding lock_irqsave doesn't prevent softirqs from running.
355 * This also increases total throughput since interrupts are not
356 * blocked on each transmitted packets or monitor timeout.
357 * new version - 2.0.0
358 *
359 * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com>
360 * - Added support for Transmit load balancing mode.
361 * - Concentrate all assignments of curr_active_slave to a single point
362 * so specific modes can take actions when the primary adapter is
363 * changed.
364 * - Take the updelay parameter into consideration during bond_enslave
365 * since some adapters loose their link during setting the device.
366 * - Renamed bond_3ad_link_status_changed() to
367 * bond_3ad_handle_link_change() for compatibility with TLB.
368 * new version - 2.1.0
369 *
370 * 2003/05/01 - Tsippy Mendelson <tsippy.mendelson at intel dot com>
371 * - Added support for Adaptive load balancing mode which is
372 * equivalent to Transmit load balancing + Receive load balancing.
373 * new version - 2.2.0
374 *
375 * 2003/05/15 - Jay Vosburgh <fubar at us dot ibm dot com>
376 * - Applied fix to activebackup_arp_monitor posted to bonding-devel
377 * by Tony Cureington <tony.cureington * hp_com>. Fixes ARP
378 * monitor endless failover bug. Version to 2.2.10
379 *
380 * 2003/05/20 - Amir Noam <amir.noam at intel dot com>
381 * - Fixed bug in ABI version control - Don't commit to a specific
382 * ABI version if receiving unsupported ioctl commands.
383 *
384 * 2003/05/22 - Jay Vosburgh <fubar at us dot ibm dot com>
385 * - Fix ifenslave -c causing bond to loose existing routes;
386 * added bond_set_mac_address() that doesn't require the
387 * bond to be down.
388 * - In conjunction with fix for ifenslave -c, in
389 * bond_change_active(), changing to the already active slave
390 * is no longer an error (it successfully does nothing).
391 *
392 * 2003/06/30 - Amir Noam <amir.noam at intel dot com>
393 * - Fixed bond_change_active() for ALB/TLB modes.
394 * Version to 2.2.14.
395 *
396 * 2003/07/29 - Amir Noam <amir.noam at intel dot com>
397 * - Fixed ARP monitoring bug.
398 * Version to 2.2.15.
399 *
400 * 2003/07/31 - Willy Tarreau <willy at ods dot org>
401 * - Fixed kernel panic when using ARP monitoring without
402 * setting bond's IP address.
403 * Version to 2.2.16.
404 *
405 * 2003/08/06 - Amir Noam <amir.noam at intel dot com>
406 * - Back port from 2.6: use alloc_netdev(); fix /proc handling;
407 * made stats a part of bond struct so no need to allocate
408 * and free it separately; use standard list operations instead
409 * of pre-allocated array of bonds.
410 * Version to 2.3.0.
411 *
412 * 2003/08/07 - Jay Vosburgh <fubar at us dot ibm dot com>,
413 * Amir Noam <amir.noam at intel dot com> and
414 * Shmulik Hen <shmulik.hen at intel dot com>
415 * - Propagating master's settings: Distinguish between modes that
416 * use a primary slave from those that don't, and propagate settings
417 * accordingly; Consolidate change_active opeartions and add
418 * reselect_active and find_best opeartions; Decouple promiscuous
419 * handling from the multicast mode setting; Add support for changing
420 * HW address and MTU with proper unwind; Consolidate procfs code,
421 * add CHANGENAME handler; Enhance netdev notification handling.
422 * Version to 2.4.0.
423 *
424 * 2003/09/15 - Stephen Hemminger <shemminger at osdl dot org>,
425 * Amir Noam <amir.noam at intel dot com>
426 * - Convert /proc to seq_file interface.
427 * Change /proc/net/bondX/info to /proc/net/bonding/bondX.
428 * Set version to 2.4.1.
429 *
430 * 2003/11/20 - Amir Noam <amir.noam at intel dot com>
431 * - Fix /proc creation/destruction.
432 *
433 * 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com>
434 * - Massive cleanup - Set version to 2.5.0
435 * Code changes:
436 * o Consolidate format of prints and debug prints.
437 * o Remove bonding_t/slave_t typedefs and consolidate all casts.
438 * o Remove dead code and unnecessary checks.
439 * o Consolidate starting/stopping timers.
440 * o Consolidate handling of primary module param throughout the code.
441 * o Removed multicast module param support - all settings are done
442 * according to mode.
443 * o Slave list iteration - bond is no longer part of the list,
444 * added cyclic list iteration macros.
445 * o Consolidate error handling in all xmit functions.
446 * Style changes:
447 * o Consolidate function naming and declarations.
448 * o Consolidate function params and local variables names.
449 * o Consolidate return values.
450 * o Consolidate curly braces.
451 * o Consolidate conditionals format.
452 * o Change struct member names and types.
453 * o Chomp trailing spaces, remove empty lines, fix indentations.
454 * o Re-organize code according to context.
455 *
456 * 2003/12/30 - Amir Noam <amir.noam at intel dot com>
457 * - Fixed: Cannot remove and re-enslave the original active slave.
458 * - Fixed: Releasing the original active slave causes mac address
459 * duplication.
460 * - Add support for slaves that use ethtool_ops.
461 * Set version to 2.5.3.
462 *
463 * 2004/01/05 - Amir Noam <amir.noam at intel dot com>
464 * - Save bonding parameters per bond instead of using the global values.
465 * Set version to 2.5.4.
466 *
467 * 2004/01/14 - Shmulik Hen <shmulik.hen at intel dot com>
468 * - Enhance VLAN support:
469 * * Add support for VLAN hardware acceleration capable slaves.
470 * * Add capability to tag self generated packets in ALB/TLB modes.
471 * Set version to 2.6.0.
472 * 2004/10/29 - Mitch Williams <mitch.a.williams at intel dot com>
473 * - Fixed bug when unloading module while using 802.3ad. If
474 * spinlock debugging is turned on, this causes a stack dump.
475 * Solution is to move call to dev_remove_pack outside of the
476 * spinlock.
477 * Set version to 2.6.1.
478 * 2005/06/05 - Jay Vosburgh <fubar@us.ibm.com>
479 * - Support for generating gratuitous ARPs in active-backup mode.
480 * Includes support for VLAN tagging all bonding-generated ARPs
481 * as needed. Set version to 2.6.2.
482 * 2005/06/08 - Jason Gabler <jygabler at lbl dot gov>
483 * - alternate hashing policy support for mode 2
484 * * Added kernel parameter "xmit_hash_policy" to allow the selection
485 * of different hashing policies for mode 2. The original mode 2
486 * policy is the default, now found in xmit_hash_policy_layer2().
487 * * Added xmit_hash_policy_layer34()
488 * - Modified by Jay Vosburgh <fubar@us.ibm.com> to also support mode 4.
489 * Set version to 2.6.3.
490 * 2005/09/26 - Jay Vosburgh <fubar@us.ibm.com>
491 * - Removed backwards compatibility for old ifenslaves. Version 2.6.4.
492 */ 32 */
493 33
494//#define BONDING_DEBUG 1 34//#define BONDING_DEBUG 1
@@ -557,6 +97,7 @@ static char *lacp_rate = NULL;
557static char *xmit_hash_policy = NULL; 97static char *xmit_hash_policy = NULL;
558static int arp_interval = BOND_LINK_ARP_INTERV; 98static int arp_interval = BOND_LINK_ARP_INTERV;
559static char *arp_ip_target[BOND_MAX_ARP_TARGETS] = { NULL, }; 99static char *arp_ip_target[BOND_MAX_ARP_TARGETS] = { NULL, };
100struct bond_params bonding_defaults;
560 101
561module_param(max_bonds, int, 0); 102module_param(max_bonds, int, 0);
562MODULE_PARM_DESC(max_bonds, "Max number of bonded devices"); 103MODULE_PARM_DESC(max_bonds, "Max number of bonded devices");
@@ -565,17 +106,24 @@ MODULE_PARM_DESC(miimon, "Link check interval in milliseconds");
565module_param(updelay, int, 0); 106module_param(updelay, int, 0);
566MODULE_PARM_DESC(updelay, "Delay before considering link up, in milliseconds"); 107MODULE_PARM_DESC(updelay, "Delay before considering link up, in milliseconds");
567module_param(downdelay, int, 0); 108module_param(downdelay, int, 0);
568MODULE_PARM_DESC(downdelay, "Delay before considering link down, in milliseconds"); 109MODULE_PARM_DESC(downdelay, "Delay before considering link down, "
110 "in milliseconds");
569module_param(use_carrier, int, 0); 111module_param(use_carrier, int, 0);
570MODULE_PARM_DESC(use_carrier, "Use netif_carrier_ok (vs MII ioctls) in miimon; 0 for off, 1 for on (default)"); 112MODULE_PARM_DESC(use_carrier, "Use netif_carrier_ok (vs MII ioctls) in miimon; "
113 "0 for off, 1 for on (default)");
571module_param(mode, charp, 0); 114module_param(mode, charp, 0);
572MODULE_PARM_DESC(mode, "Mode of operation : 0 for round robin, 1 for active-backup, 2 for xor"); 115MODULE_PARM_DESC(mode, "Mode of operation : 0 for balance-rr, "
116 "1 for active-backup, 2 for balance-xor, "
117 "3 for broadcast, 4 for 802.3ad, 5 for balance-tlb, "
118 "6 for balance-alb");
573module_param(primary, charp, 0); 119module_param(primary, charp, 0);
574MODULE_PARM_DESC(primary, "Primary network device to use"); 120MODULE_PARM_DESC(primary, "Primary network device to use");
575module_param(lacp_rate, charp, 0); 121module_param(lacp_rate, charp, 0);
576MODULE_PARM_DESC(lacp_rate, "LACPDU tx rate to request from 802.3ad partner (slow/fast)"); 122MODULE_PARM_DESC(lacp_rate, "LACPDU tx rate to request from 802.3ad partner "
123 "(slow/fast)");
577module_param(xmit_hash_policy, charp, 0); 124module_param(xmit_hash_policy, charp, 0);
578MODULE_PARM_DESC(xmit_hash_policy, "XOR hashing method : 0 for layer 2 (default), 1 for layer 3+4"); 125MODULE_PARM_DESC(xmit_hash_policy, "XOR hashing method: 0 for layer 2 (default)"
126 ", 1 for layer 3+4");
579module_param(arp_interval, int, 0); 127module_param(arp_interval, int, 0);
580MODULE_PARM_DESC(arp_interval, "arp interval in milliseconds"); 128MODULE_PARM_DESC(arp_interval, "arp interval in milliseconds");
581module_param_array(arp_ip_target, charp, NULL, 0); 129module_param_array(arp_ip_target, charp, NULL, 0);
@@ -586,30 +134,27 @@ MODULE_PARM_DESC(arp_ip_target, "arp targets in n.n.n.n form");
586static const char *version = 134static const char *version =
587 DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n"; 135 DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n";
588 136
589static LIST_HEAD(bond_dev_list); 137LIST_HEAD(bond_dev_list);
590 138
591#ifdef CONFIG_PROC_FS 139#ifdef CONFIG_PROC_FS
592static struct proc_dir_entry *bond_proc_dir = NULL; 140static struct proc_dir_entry *bond_proc_dir = NULL;
593#endif 141#endif
594 142
143extern struct rw_semaphore bonding_rwsem;
595static u32 arp_target[BOND_MAX_ARP_TARGETS] = { 0, } ; 144static u32 arp_target[BOND_MAX_ARP_TARGETS] = { 0, } ;
596static int arp_ip_count = 0; 145static int arp_ip_count = 0;
597static int bond_mode = BOND_MODE_ROUNDROBIN; 146static int bond_mode = BOND_MODE_ROUNDROBIN;
598static int xmit_hashtype= BOND_XMIT_POLICY_LAYER2; 147static int xmit_hashtype= BOND_XMIT_POLICY_LAYER2;
599static int lacp_fast = 0; 148static int lacp_fast = 0;
600 149
601struct bond_parm_tbl {
602 char *modename;
603 int mode;
604};
605 150
606static struct bond_parm_tbl bond_lacp_tbl[] = { 151struct bond_parm_tbl bond_lacp_tbl[] = {
607{ "slow", AD_LACP_SLOW}, 152{ "slow", AD_LACP_SLOW},
608{ "fast", AD_LACP_FAST}, 153{ "fast", AD_LACP_FAST},
609{ NULL, -1}, 154{ NULL, -1},
610}; 155};
611 156
612static struct bond_parm_tbl bond_mode_tbl[] = { 157struct bond_parm_tbl bond_mode_tbl[] = {
613{ "balance-rr", BOND_MODE_ROUNDROBIN}, 158{ "balance-rr", BOND_MODE_ROUNDROBIN},
614{ "active-backup", BOND_MODE_ACTIVEBACKUP}, 159{ "active-backup", BOND_MODE_ACTIVEBACKUP},
615{ "balance-xor", BOND_MODE_XOR}, 160{ "balance-xor", BOND_MODE_XOR},
@@ -620,7 +165,7 @@ static struct bond_parm_tbl bond_mode_tbl[] = {
620{ NULL, -1}, 165{ NULL, -1},
621}; 166};
622 167
623static struct bond_parm_tbl xmit_hashtype_tbl[] = { 168struct bond_parm_tbl xmit_hashtype_tbl[] = {
624{ "layer2", BOND_XMIT_POLICY_LAYER2}, 169{ "layer2", BOND_XMIT_POLICY_LAYER2},
625{ "layer3+4", BOND_XMIT_POLICY_LAYER34}, 170{ "layer3+4", BOND_XMIT_POLICY_LAYER34},
626{ NULL, -1}, 171{ NULL, -1},
@@ -628,12 +173,11 @@ static struct bond_parm_tbl xmit_hashtype_tbl[] = {
628 173
629/*-------------------------- Forward declarations ---------------------------*/ 174/*-------------------------- Forward declarations ---------------------------*/
630 175
631static inline void bond_set_mode_ops(struct bonding *bond, int mode);
632static void bond_send_gratuitous_arp(struct bonding *bond); 176static void bond_send_gratuitous_arp(struct bonding *bond);
633 177
634/*---------------------------- General routines -----------------------------*/ 178/*---------------------------- General routines -----------------------------*/
635 179
636static const char *bond_mode_name(int mode) 180const char *bond_mode_name(int mode)
637{ 181{
638 switch (mode) { 182 switch (mode) {
639 case BOND_MODE_ROUNDROBIN : 183 case BOND_MODE_ROUNDROBIN :
@@ -910,7 +454,7 @@ static void bond_vlan_rx_add_vid(struct net_device *bond_dev, uint16_t vid)
910 res = bond_add_vlan(bond, vid); 454 res = bond_add_vlan(bond, vid);
911 if (res) { 455 if (res) {
912 printk(KERN_ERR DRV_NAME 456 printk(KERN_ERR DRV_NAME
913 ": %s: Failed to add vlan id %d\n", 457 ": %s: Error: Failed to add vlan id %d\n",
914 bond_dev->name, vid); 458 bond_dev->name, vid);
915 } 459 }
916} 460}
@@ -944,7 +488,7 @@ static void bond_vlan_rx_kill_vid(struct net_device *bond_dev, uint16_t vid)
944 res = bond_del_vlan(bond, vid); 488 res = bond_del_vlan(bond, vid);
945 if (res) { 489 if (res) {
946 printk(KERN_ERR DRV_NAME 490 printk(KERN_ERR DRV_NAME
947 ": %s: Failed to remove vlan id %d\n", 491 ": %s: Error: Failed to remove vlan id %d\n",
948 bond_dev->name, vid); 492 bond_dev->name, vid);
949 } 493 }
950} 494}
@@ -1449,7 +993,7 @@ static struct slave *bond_find_best_slave(struct bonding *bond)
1449 * 993 *
1450 * Warning: Caller must hold curr_slave_lock for writing. 994 * Warning: Caller must hold curr_slave_lock for writing.
1451 */ 995 */
1452static void bond_change_active_slave(struct bonding *bond, struct slave *new_active) 996void bond_change_active_slave(struct bonding *bond, struct slave *new_active)
1453{ 997{
1454 struct slave *old_active = bond->curr_active_slave; 998 struct slave *old_active = bond->curr_active_slave;
1455 999
@@ -1523,7 +1067,7 @@ static void bond_change_active_slave(struct bonding *bond, struct slave *new_act
1523 * 1067 *
1524 * Warning: Caller must hold curr_slave_lock for writing. 1068 * Warning: Caller must hold curr_slave_lock for writing.
1525 */ 1069 */
1526static void bond_select_active_slave(struct bonding *bond) 1070void bond_select_active_slave(struct bonding *bond)
1527{ 1071{
1528 struct slave *best_slave; 1072 struct slave *best_slave;
1529 1073
@@ -1591,7 +1135,7 @@ static void bond_detach_slave(struct bonding *bond, struct slave *slave)
1591 1135
1592/*---------------------------------- IOCTL ----------------------------------*/ 1136/*---------------------------------- IOCTL ----------------------------------*/
1593 1137
1594static int bond_sethwaddr(struct net_device *bond_dev, struct net_device *slave_dev) 1138int bond_sethwaddr(struct net_device *bond_dev, struct net_device *slave_dev)
1595{ 1139{
1596 dprintk("bond_dev=%p\n", bond_dev); 1140 dprintk("bond_dev=%p\n", bond_dev);
1597 dprintk("slave_dev=%p\n", slave_dev); 1141 dprintk("slave_dev=%p\n", slave_dev);
@@ -1631,7 +1175,7 @@ static int bond_compute_features(struct bonding *bond)
1631} 1175}
1632 1176
1633/* enslave device <slave> to bond device <master> */ 1177/* enslave device <slave> to bond device <master> */
1634static int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) 1178int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
1635{ 1179{
1636 struct bonding *bond = bond_dev->priv; 1180 struct bonding *bond = bond_dev->priv;
1637 struct slave *new_slave = NULL; 1181 struct slave *new_slave = NULL;
@@ -1644,8 +1188,8 @@ static int bond_enslave(struct net_device *bond_dev, struct net_device *slave_de
1644 if (!bond->params.use_carrier && slave_dev->ethtool_ops == NULL && 1188 if (!bond->params.use_carrier && slave_dev->ethtool_ops == NULL &&
1645 slave_dev->do_ioctl == NULL) { 1189 slave_dev->do_ioctl == NULL) {
1646 printk(KERN_WARNING DRV_NAME 1190 printk(KERN_WARNING DRV_NAME
1647 ": Warning : no link monitoring support for %s\n", 1191 ": %s: Warning: no link monitoring support for %s\n",
1648 slave_dev->name); 1192 bond_dev->name, slave_dev->name);
1649 } 1193 }
1650 1194
1651 /* bond must be initialized by bond_open() before enslaving */ 1195 /* bond must be initialized by bond_open() before enslaving */
@@ -1666,17 +1210,17 @@ static int bond_enslave(struct net_device *bond_dev, struct net_device *slave_de
1666 dprintk("%s: NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); 1210 dprintk("%s: NETIF_F_VLAN_CHALLENGED\n", slave_dev->name);
1667 if (!list_empty(&bond->vlan_list)) { 1211 if (!list_empty(&bond->vlan_list)) {
1668 printk(KERN_ERR DRV_NAME 1212 printk(KERN_ERR DRV_NAME
1669 ": Error: cannot enslave VLAN " 1213 ": %s: Error: cannot enslave VLAN "
1670 "challenged slave %s on VLAN enabled " 1214 "challenged slave %s on VLAN enabled "
1671 "bond %s\n", slave_dev->name, 1215 "bond %s\n", bond_dev->name, slave_dev->name,
1672 bond_dev->name); 1216 bond_dev->name);
1673 return -EPERM; 1217 return -EPERM;
1674 } else { 1218 } else {
1675 printk(KERN_WARNING DRV_NAME 1219 printk(KERN_WARNING DRV_NAME
1676 ": Warning: enslaved VLAN challenged " 1220 ": %s: Warning: enslaved VLAN challenged "
1677 "slave %s. Adding VLANs will be blocked as " 1221 "slave %s. Adding VLANs will be blocked as "
1678 "long as %s is part of bond %s\n", 1222 "long as %s is part of bond %s\n",
1679 slave_dev->name, slave_dev->name, 1223 bond_dev->name, slave_dev->name, slave_dev->name,
1680 bond_dev->name); 1224 bond_dev->name);
1681 bond_dev->features |= NETIF_F_VLAN_CHALLENGED; 1225 bond_dev->features |= NETIF_F_VLAN_CHALLENGED;
1682 } 1226 }
@@ -1706,12 +1250,11 @@ static int bond_enslave(struct net_device *bond_dev, struct net_device *slave_de
1706 1250
1707 if (slave_dev->set_mac_address == NULL) { 1251 if (slave_dev->set_mac_address == NULL) {
1708 printk(KERN_ERR DRV_NAME 1252 printk(KERN_ERR DRV_NAME
1709 ": Error: The slave device you specified does " 1253 ": %s: Error: The slave device you specified does "
1710 "not support setting the MAC address.\n"); 1254 "not support setting the MAC address. "
1711 printk(KERN_ERR 1255 "Your kernel likely does not support slave "
1712 "Your kernel likely does not support slave devices.\n"); 1256 "devices.\n", bond_dev->name);
1713 1257 res = -EOPNOTSUPP;
1714 res = -EOPNOTSUPP;
1715 goto err_undo_flags; 1258 goto err_undo_flags;
1716 } 1259 }
1717 1260
@@ -1827,21 +1370,21 @@ static int bond_enslave(struct net_device *bond_dev, struct net_device *slave_de
1827 * the messages for netif_carrier. 1370 * the messages for netif_carrier.
1828 */ 1371 */
1829 printk(KERN_WARNING DRV_NAME 1372 printk(KERN_WARNING DRV_NAME
1830 ": Warning: MII and ETHTOOL support not " 1373 ": %s: Warning: MII and ETHTOOL support not "
1831 "available for interface %s, and " 1374 "available for interface %s, and "
1832 "arp_interval/arp_ip_target module parameters " 1375 "arp_interval/arp_ip_target module parameters "
1833 "not specified, thus bonding will not detect " 1376 "not specified, thus bonding will not detect "
1834 "link failures! see bonding.txt for details.\n", 1377 "link failures! see bonding.txt for details.\n",
1835 slave_dev->name); 1378 bond_dev->name, slave_dev->name);
1836 } else if (link_reporting == -1) { 1379 } else if (link_reporting == -1) {
1837 /* unable get link status using mii/ethtool */ 1380 /* unable get link status using mii/ethtool */
1838 printk(KERN_WARNING DRV_NAME 1381 printk(KERN_WARNING DRV_NAME
1839 ": Warning: can't get link status from " 1382 ": %s: Warning: can't get link status from "
1840 "interface %s; the network driver associated " 1383 "interface %s; the network driver associated "
1841 "with this interface does not support MII or " 1384 "with this interface does not support MII or "
1842 "ETHTOOL link status reporting, thus miimon " 1385 "ETHTOOL link status reporting, thus miimon "
1843 "has no effect on this interface.\n", 1386 "has no effect on this interface.\n",
1844 slave_dev->name); 1387 bond_dev->name, slave_dev->name);
1845 } 1388 }
1846 } 1389 }
1847 1390
@@ -1868,15 +1411,15 @@ static int bond_enslave(struct net_device *bond_dev, struct net_device *slave_de
1868 if (bond_update_speed_duplex(new_slave) && 1411 if (bond_update_speed_duplex(new_slave) &&
1869 (new_slave->link != BOND_LINK_DOWN)) { 1412 (new_slave->link != BOND_LINK_DOWN)) {
1870 printk(KERN_WARNING DRV_NAME 1413 printk(KERN_WARNING DRV_NAME
1871 ": Warning: failed to get speed and duplex from %s, " 1414 ": %s: Warning: failed to get speed and duplex from %s, "
1872 "assumed to be 100Mb/sec and Full.\n", 1415 "assumed to be 100Mb/sec and Full.\n",
1873 new_slave->dev->name); 1416 bond_dev->name, new_slave->dev->name);
1874 1417
1875 if (bond->params.mode == BOND_MODE_8023AD) { 1418 if (bond->params.mode == BOND_MODE_8023AD) {
1876 printk(KERN_WARNING 1419 printk(KERN_WARNING DRV_NAME
1877 "Operation of 802.3ad mode requires ETHTOOL " 1420 ": %s: Warning: Operation of 802.3ad mode requires ETHTOOL "
1878 "support in base driver for proper aggregator " 1421 "support in base driver for proper aggregator "
1879 "selection.\n"); 1422 "selection.\n", bond_dev->name);
1880 } 1423 }
1881 } 1424 }
1882 1425
@@ -1958,6 +1501,10 @@ static int bond_enslave(struct net_device *bond_dev, struct net_device *slave_de
1958 1501
1959 write_unlock_bh(&bond->lock); 1502 write_unlock_bh(&bond->lock);
1960 1503
1504 res = bond_create_slave_symlinks(bond_dev, slave_dev);
1505 if (res)
1506 goto err_unset_master;
1507
1961 printk(KERN_INFO DRV_NAME 1508 printk(KERN_INFO DRV_NAME
1962 ": %s: enslaving %s as a%s interface with a%s link.\n", 1509 ": %s: enslaving %s as a%s interface with a%s link.\n",
1963 bond_dev->name, slave_dev->name, 1510 bond_dev->name, slave_dev->name,
@@ -1999,7 +1546,7 @@ err_undo_flags:
1999 * for Bonded connections: 1546 * for Bonded connections:
2000 * The first up interface should be left on and all others downed. 1547 * The first up interface should be left on and all others downed.
2001 */ 1548 */
2002static int bond_release(struct net_device *bond_dev, struct net_device *slave_dev) 1549int bond_release(struct net_device *bond_dev, struct net_device *slave_dev)
2003{ 1550{
2004 struct bonding *bond = bond_dev->priv; 1551 struct bonding *bond = bond_dev->priv;
2005 struct slave *slave, *oldcurrent; 1552 struct slave *slave, *oldcurrent;
@@ -2010,7 +1557,7 @@ static int bond_release(struct net_device *bond_dev, struct net_device *slave_de
2010 if (!(slave_dev->flags & IFF_SLAVE) || 1557 if (!(slave_dev->flags & IFF_SLAVE) ||
2011 (slave_dev->master != bond_dev)) { 1558 (slave_dev->master != bond_dev)) {
2012 printk(KERN_ERR DRV_NAME 1559 printk(KERN_ERR DRV_NAME
2013 ": Error: %s: cannot release %s.\n", 1560 ": %s: Error: cannot release %s.\n",
2014 bond_dev->name, slave_dev->name); 1561 bond_dev->name, slave_dev->name);
2015 return -EINVAL; 1562 return -EINVAL;
2016 } 1563 }
@@ -2031,11 +1578,12 @@ static int bond_release(struct net_device *bond_dev, struct net_device *slave_de
2031 ETH_ALEN); 1578 ETH_ALEN);
2032 if (!mac_addr_differ && (bond->slave_cnt > 1)) { 1579 if (!mac_addr_differ && (bond->slave_cnt > 1)) {
2033 printk(KERN_WARNING DRV_NAME 1580 printk(KERN_WARNING DRV_NAME
2034 ": Warning: the permanent HWaddr of %s " 1581 ": %s: Warning: the permanent HWaddr of %s "
2035 "- %02X:%02X:%02X:%02X:%02X:%02X - is " 1582 "- %02X:%02X:%02X:%02X:%02X:%02X - is "
2036 "still in use by %s. Set the HWaddr of " 1583 "still in use by %s. Set the HWaddr of "
2037 "%s to a different address to avoid " 1584 "%s to a different address to avoid "
2038 "conflicts.\n", 1585 "conflicts.\n",
1586 bond_dev->name,
2039 slave_dev->name, 1587 slave_dev->name,
2040 slave->perm_hwaddr[0], 1588 slave->perm_hwaddr[0],
2041 slave->perm_hwaddr[1], 1589 slave->perm_hwaddr[1],
@@ -2111,24 +1659,28 @@ static int bond_release(struct net_device *bond_dev, struct net_device *slave_de
2111 bond_dev->features |= NETIF_F_VLAN_CHALLENGED; 1659 bond_dev->features |= NETIF_F_VLAN_CHALLENGED;
2112 } else { 1660 } else {
2113 printk(KERN_WARNING DRV_NAME 1661 printk(KERN_WARNING DRV_NAME
2114 ": Warning: clearing HW address of %s while it " 1662 ": %s: Warning: clearing HW address of %s while it "
2115 "still has VLANs.\n", 1663 "still has VLANs.\n",
2116 bond_dev->name); 1664 bond_dev->name, bond_dev->name);
2117 printk(KERN_WARNING DRV_NAME 1665 printk(KERN_WARNING DRV_NAME
2118 ": When re-adding slaves, make sure the bond's " 1666 ": %s: When re-adding slaves, make sure the bond's "
2119 "HW address matches its VLANs'.\n"); 1667 "HW address matches its VLANs'.\n",
1668 bond_dev->name);
2120 } 1669 }
2121 } else if ((bond_dev->features & NETIF_F_VLAN_CHALLENGED) && 1670 } else if ((bond_dev->features & NETIF_F_VLAN_CHALLENGED) &&
2122 !bond_has_challenged_slaves(bond)) { 1671 !bond_has_challenged_slaves(bond)) {
2123 printk(KERN_INFO DRV_NAME 1672 printk(KERN_INFO DRV_NAME
2124 ": last VLAN challenged slave %s " 1673 ": %s: last VLAN challenged slave %s "
2125 "left bond %s. VLAN blocking is removed\n", 1674 "left bond %s. VLAN blocking is removed\n",
2126 slave_dev->name, bond_dev->name); 1675 bond_dev->name, slave_dev->name, bond_dev->name);
2127 bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; 1676 bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED;
2128 } 1677 }
2129 1678
2130 write_unlock_bh(&bond->lock); 1679 write_unlock_bh(&bond->lock);
2131 1680
1681 /* must do this from outside any spinlocks */
1682 bond_destroy_slave_symlinks(bond_dev, slave_dev);
1683
2132 bond_del_vlans_from_slave(bond, slave_dev); 1684 bond_del_vlans_from_slave(bond, slave_dev);
2133 1685
2134 /* If the mode USES_PRIMARY, then we should only remove its 1686 /* If the mode USES_PRIMARY, then we should only remove its
@@ -2220,6 +1772,7 @@ static int bond_release_all(struct net_device *bond_dev)
2220 */ 1772 */
2221 write_unlock_bh(&bond->lock); 1773 write_unlock_bh(&bond->lock);
2222 1774
1775 bond_destroy_slave_symlinks(bond_dev, slave_dev);
2223 bond_del_vlans_from_slave(bond, slave_dev); 1776 bond_del_vlans_from_slave(bond, slave_dev);
2224 1777
2225 /* If the mode USES_PRIMARY, then we should only remove its 1778 /* If the mode USES_PRIMARY, then we should only remove its
@@ -2274,12 +1827,13 @@ static int bond_release_all(struct net_device *bond_dev)
2274 bond_dev->features |= NETIF_F_VLAN_CHALLENGED; 1827 bond_dev->features |= NETIF_F_VLAN_CHALLENGED;
2275 } else { 1828 } else {
2276 printk(KERN_WARNING DRV_NAME 1829 printk(KERN_WARNING DRV_NAME
2277 ": Warning: clearing HW address of %s while it " 1830 ": %s: Warning: clearing HW address of %s while it "
2278 "still has VLANs.\n", 1831 "still has VLANs.\n",
2279 bond_dev->name); 1832 bond_dev->name, bond_dev->name);
2280 printk(KERN_WARNING DRV_NAME 1833 printk(KERN_WARNING DRV_NAME
2281 ": When re-adding slaves, make sure the bond's " 1834 ": %s: When re-adding slaves, make sure the bond's "
2282 "HW address matches its VLANs'.\n"); 1835 "HW address matches its VLANs'.\n",
1836 bond_dev->name);
2283 } 1837 }
2284 1838
2285 printk(KERN_INFO DRV_NAME 1839 printk(KERN_INFO DRV_NAME
@@ -2397,7 +1951,7 @@ static int bond_slave_info_query(struct net_device *bond_dev, struct ifslave *in
2397/*-------------------------------- Monitoring -------------------------------*/ 1951/*-------------------------------- Monitoring -------------------------------*/
2398 1952
2399/* this function is called regularly to monitor each slave's link. */ 1953/* this function is called regularly to monitor each slave's link. */
2400static void bond_mii_monitor(struct net_device *bond_dev) 1954void bond_mii_monitor(struct net_device *bond_dev)
2401{ 1955{
2402 struct bonding *bond = bond_dev->priv; 1956 struct bonding *bond = bond_dev->priv;
2403 struct slave *slave, *oldcurrent; 1957 struct slave *slave, *oldcurrent;
@@ -2596,8 +2150,11 @@ static void bond_mii_monitor(struct net_device *bond_dev)
2596 break; 2150 break;
2597 default: 2151 default:
2598 /* Should not happen */ 2152 /* Should not happen */
2599 printk(KERN_ERR "bonding: Error: %s Illegal value (link=%d)\n", 2153 printk(KERN_ERR DRV_NAME
2600 slave->dev->name, slave->link); 2154 ": %s: Error: %s Illegal value (link=%d)\n",
2155 bond_dev->name,
2156 slave->dev->name,
2157 slave->link);
2601 goto out; 2158 goto out;
2602 } /* end of switch (slave->link) */ 2159 } /* end of switch (slave->link) */
2603 2160
@@ -2721,7 +2278,9 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave)
2721 struct flowi fl; 2278 struct flowi fl;
2722 struct rtable *rt; 2279 struct rtable *rt;
2723 2280
2724 for (i = 0; (i < BOND_MAX_ARP_TARGETS) && targets[i]; i++) { 2281 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
2282 if (!targets[i])
2283 continue;
2725 dprintk("basa: target %x\n", targets[i]); 2284 dprintk("basa: target %x\n", targets[i]);
2726 if (list_empty(&bond->vlan_list)) { 2285 if (list_empty(&bond->vlan_list)) {
2727 dprintk("basa: empty vlan: arp_send\n"); 2286 dprintk("basa: empty vlan: arp_send\n");
@@ -2825,7 +2384,7 @@ static void bond_send_gratuitous_arp(struct bonding *bond)
2825 * arp is transmitted to generate traffic. see activebackup_arp_monitor for 2384 * arp is transmitted to generate traffic. see activebackup_arp_monitor for
2826 * arp monitoring in active backup mode. 2385 * arp monitoring in active backup mode.
2827 */ 2386 */
2828static void bond_loadbalance_arp_mon(struct net_device *bond_dev) 2387void bond_loadbalance_arp_mon(struct net_device *bond_dev)
2829{ 2388{
2830 struct bonding *bond = bond_dev->priv; 2389 struct bonding *bond = bond_dev->priv;
2831 struct slave *slave, *oldcurrent; 2390 struct slave *slave, *oldcurrent;
@@ -2963,7 +2522,7 @@ out:
2963 * may have received. 2522 * may have received.
2964 * see loadbalance_arp_monitor for arp monitoring in load balancing mode 2523 * see loadbalance_arp_monitor for arp monitoring in load balancing mode
2965 */ 2524 */
2966static void bond_activebackup_arp_mon(struct net_device *bond_dev) 2525void bond_activebackup_arp_mon(struct net_device *bond_dev)
2967{ 2526{
2968 struct bonding *bond = bond_dev->priv; 2527 struct bonding *bond = bond_dev->priv;
2969 struct slave *slave; 2528 struct slave *slave;
@@ -3249,6 +2808,8 @@ static void bond_info_show_master(struct seq_file *seq)
3249{ 2808{
3250 struct bonding *bond = seq->private; 2809 struct bonding *bond = seq->private;
3251 struct slave *curr; 2810 struct slave *curr;
2811 int i;
2812 u32 target;
3252 2813
3253 read_lock(&bond->curr_slave_lock); 2814 read_lock(&bond->curr_slave_lock);
3254 curr = bond->curr_active_slave; 2815 curr = bond->curr_active_slave;
@@ -3257,10 +2818,17 @@ static void bond_info_show_master(struct seq_file *seq)
3257 seq_printf(seq, "Bonding Mode: %s\n", 2818 seq_printf(seq, "Bonding Mode: %s\n",
3258 bond_mode_name(bond->params.mode)); 2819 bond_mode_name(bond->params.mode));
3259 2820
2821 if (bond->params.mode == BOND_MODE_XOR ||
2822 bond->params.mode == BOND_MODE_8023AD) {
2823 seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
2824 xmit_hashtype_tbl[bond->params.xmit_policy].modename,
2825 bond->params.xmit_policy);
2826 }
2827
3260 if (USES_PRIMARY(bond->params.mode)) { 2828 if (USES_PRIMARY(bond->params.mode)) {
3261 seq_printf(seq, "Primary Slave: %s\n", 2829 seq_printf(seq, "Primary Slave: %s\n",
3262 (bond->params.primary[0]) ? 2830 (bond->primary_slave) ?
3263 bond->params.primary : "None"); 2831 bond->primary_slave->dev->name : "None");
3264 2832
3265 seq_printf(seq, "Currently Active Slave: %s\n", 2833 seq_printf(seq, "Currently Active Slave: %s\n",
3266 (curr) ? curr->dev->name : "None"); 2834 (curr) ? curr->dev->name : "None");
@@ -3273,6 +2841,27 @@ static void bond_info_show_master(struct seq_file *seq)
3273 seq_printf(seq, "Down Delay (ms): %d\n", 2841 seq_printf(seq, "Down Delay (ms): %d\n",
3274 bond->params.downdelay * bond->params.miimon); 2842 bond->params.downdelay * bond->params.miimon);
3275 2843
2844
2845 /* ARP information */
2846 if(bond->params.arp_interval > 0) {
2847 int printed=0;
2848 seq_printf(seq, "ARP Polling Interval (ms): %d\n",
2849 bond->params.arp_interval);
2850
2851 seq_printf(seq, "ARP IP target/s (n.n.n.n form):");
2852
2853 for(i = 0; (i < BOND_MAX_ARP_TARGETS) ;i++) {
2854 if (!bond->params.arp_targets[i])
2855 continue;
2856 if (printed)
2857 seq_printf(seq, ",");
2858 target = ntohl(bond->params.arp_targets[i]);
2859 seq_printf(seq, " %d.%d.%d.%d", HIPQUAD(target));
2860 printed = 1;
2861 }
2862 seq_printf(seq, "\n");
2863 }
2864
3276 if (bond->params.mode == BOND_MODE_8023AD) { 2865 if (bond->params.mode == BOND_MODE_8023AD) {
3277 struct ad_info ad_info; 2866 struct ad_info ad_info;
3278 2867
@@ -3478,7 +3067,10 @@ static int bond_event_changename(struct bonding *bond)
3478 bond_remove_proc_entry(bond); 3067 bond_remove_proc_entry(bond);
3479 bond_create_proc_entry(bond); 3068 bond_create_proc_entry(bond);
3480#endif 3069#endif
3481 3070 down_write(&(bonding_rwsem));
3071 bond_destroy_sysfs_entry(bond);
3072 bond_create_sysfs_entry(bond);
3073 up_write(&(bonding_rwsem));
3482 return NOTIFY_DONE; 3074 return NOTIFY_DONE;
3483} 3075}
3484 3076
@@ -3955,6 +3547,7 @@ static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd
3955 return -EPERM; 3547 return -EPERM;
3956 } 3548 }
3957 3549
3550 down_write(&(bonding_rwsem));
3958 slave_dev = dev_get_by_name(ifr->ifr_slave); 3551 slave_dev = dev_get_by_name(ifr->ifr_slave);
3959 3552
3960 dprintk("slave_dev=%p: \n", slave_dev); 3553 dprintk("slave_dev=%p: \n", slave_dev);
@@ -3987,6 +3580,7 @@ static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd
3987 dev_put(slave_dev); 3580 dev_put(slave_dev);
3988 } 3581 }
3989 3582
3583 up_write(&(bonding_rwsem));
3990 return res; 3584 return res;
3991} 3585}
3992 3586
@@ -4071,6 +3665,7 @@ static int bond_change_mtu(struct net_device *bond_dev, int new_mtu)
4071 bond_for_each_slave(bond, slave, i) { 3665 bond_for_each_slave(bond, slave, i) {
4072 dprintk("s %p s->p %p c_m %p\n", slave, 3666 dprintk("s %p s->p %p c_m %p\n", slave,
4073 slave->prev, slave->dev->change_mtu); 3667 slave->prev, slave->dev->change_mtu);
3668
4074 res = dev_set_mtu(slave->dev, new_mtu); 3669 res = dev_set_mtu(slave->dev, new_mtu);
4075 3670
4076 if (res) { 3671 if (res) {
@@ -4397,8 +3992,9 @@ static int bond_xmit_broadcast(struct sk_buff *skb, struct net_device *bond_dev)
4397 struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC); 3992 struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
4398 if (!skb2) { 3993 if (!skb2) {
4399 printk(KERN_ERR DRV_NAME 3994 printk(KERN_ERR DRV_NAME
4400 ": Error: bond_xmit_broadcast(): " 3995 ": %s: Error: bond_xmit_broadcast(): "
4401 "skb_clone() failed\n"); 3996 "skb_clone() failed\n",
3997 bond_dev->name);
4402 continue; 3998 continue;
4403 } 3999 }
4404 4000
@@ -4431,7 +4027,7 @@ out:
4431/* 4027/*
4432 * set bond mode specific net device operations 4028 * set bond mode specific net device operations
4433 */ 4029 */
4434static inline void bond_set_mode_ops(struct bonding *bond, int mode) 4030void bond_set_mode_ops(struct bonding *bond, int mode)
4435{ 4031{
4436 struct net_device *bond_dev = bond->dev; 4032 struct net_device *bond_dev = bond->dev;
4437 4033
@@ -4467,7 +4063,8 @@ static inline void bond_set_mode_ops(struct bonding *bond, int mode)
4467 default: 4063 default:
4468 /* Should never happen, mode already checked */ 4064 /* Should never happen, mode already checked */
4469 printk(KERN_ERR DRV_NAME 4065 printk(KERN_ERR DRV_NAME
4470 ": Error: Unknown bonding mode %d\n", 4066 ": %s: Error: Unknown bonding mode %d\n",
4067 bond_dev->name,
4471 mode); 4068 mode);
4472 break; 4069 break;
4473 } 4070 }
@@ -4491,7 +4088,7 @@ static struct ethtool_ops bond_ethtool_ops = {
4491 * Does not allocate but creates a /proc entry. 4088 * Does not allocate but creates a /proc entry.
4492 * Allowed to fail. 4089 * Allowed to fail.
4493 */ 4090 */
4494static int __init bond_init(struct net_device *bond_dev, struct bond_params *params) 4091static int bond_init(struct net_device *bond_dev, struct bond_params *params)
4495{ 4092{
4496 struct bonding *bond = bond_dev->priv; 4093 struct bonding *bond = bond_dev->priv;
4497 4094
@@ -4565,7 +4162,7 @@ static int __init bond_init(struct net_device *bond_dev, struct bond_params *par
4565/* De-initialize device specific data. 4162/* De-initialize device specific data.
4566 * Caller must hold rtnl_lock. 4163 * Caller must hold rtnl_lock.
4567 */ 4164 */
4568static inline void bond_deinit(struct net_device *bond_dev) 4165void bond_deinit(struct net_device *bond_dev)
4569{ 4166{
4570 struct bonding *bond = bond_dev->priv; 4167 struct bonding *bond = bond_dev->priv;
4571 4168
@@ -4601,7 +4198,7 @@ static void bond_free_all(void)
4601 * Convert string input module parms. Accept either the 4198 * Convert string input module parms. Accept either the
4602 * number of the mode or its string name. 4199 * number of the mode or its string name.
4603 */ 4200 */
4604static inline int bond_parse_parm(char *mode_arg, struct bond_parm_tbl *tbl) 4201int bond_parse_parm(char *mode_arg, struct bond_parm_tbl *tbl)
4605{ 4202{
4606 int i; 4203 int i;
4607 4204
@@ -4670,7 +4267,7 @@ static int bond_check_params(struct bond_params *params)
4670 if (max_bonds < 1 || max_bonds > INT_MAX) { 4267 if (max_bonds < 1 || max_bonds > INT_MAX) {
4671 printk(KERN_WARNING DRV_NAME 4268 printk(KERN_WARNING DRV_NAME
4672 ": Warning: max_bonds (%d) not in range %d-%d, so it " 4269 ": Warning: max_bonds (%d) not in range %d-%d, so it "
4673 "was reset to BOND_DEFAULT_MAX_BONDS (%d)", 4270 "was reset to BOND_DEFAULT_MAX_BONDS (%d)\n",
4674 max_bonds, 1, INT_MAX, BOND_DEFAULT_MAX_BONDS); 4271 max_bonds, 1, INT_MAX, BOND_DEFAULT_MAX_BONDS);
4675 max_bonds = BOND_DEFAULT_MAX_BONDS; 4272 max_bonds = BOND_DEFAULT_MAX_BONDS;
4676 } 4273 }
@@ -4881,81 +4478,96 @@ static int bond_check_params(struct bond_params *params)
4881 return 0; 4478 return 0;
4882} 4479}
4883 4480
4481/* Create a new bond based on the specified name and bonding parameters.
4482 * Caller must NOT hold rtnl_lock; we need to release it here before we
4483 * set up our sysfs entries.
4484 */
4485int bond_create(char *name, struct bond_params *params, struct bonding **newbond)
4486{
4487 struct net_device *bond_dev;
4488 int res;
4489
4490 rtnl_lock();
4491 bond_dev = alloc_netdev(sizeof(struct bonding), name, ether_setup);
4492 if (!bond_dev) {
4493 printk(KERN_ERR DRV_NAME
4494 ": %s: eek! can't alloc netdev!\n",
4495 name);
4496 res = -ENOMEM;
4497 goto out_rtnl;
4498 }
4499
4500 /* bond_init() must be called after dev_alloc_name() (for the
4501 * /proc files), but before register_netdevice(), because we
4502 * need to set function pointers.
4503 */
4504
4505 res = bond_init(bond_dev, params);
4506 if (res < 0) {
4507 goto out_netdev;
4508 }
4509
4510 SET_MODULE_OWNER(bond_dev);
4511
4512 res = register_netdevice(bond_dev);
4513 if (res < 0) {
4514 goto out_bond;
4515 }
4516 if (newbond)
4517 *newbond = bond_dev->priv;
4518
4519 rtnl_unlock(); /* allows sysfs registration of net device */
4520 res = bond_create_sysfs_entry(bond_dev->priv);
4521 goto done;
4522out_bond:
4523 bond_deinit(bond_dev);
4524out_netdev:
4525 free_netdev(bond_dev);
4526out_rtnl:
4527 rtnl_unlock();
4528done:
4529 return res;
4530}
4531
4884static int __init bonding_init(void) 4532static int __init bonding_init(void)
4885{ 4533{
4886 struct bond_params params;
4887 int i; 4534 int i;
4888 int res; 4535 int res;
4536 char new_bond_name[8]; /* Enough room for 999 bonds at init. */
4889 4537
4890 printk(KERN_INFO "%s", version); 4538 printk(KERN_INFO "%s", version);
4891 4539
4892 res = bond_check_params(&params); 4540 res = bond_check_params(&bonding_defaults);
4893 if (res) { 4541 if (res) {
4894 return res; 4542 goto out;
4895 } 4543 }
4896 4544
4897 rtnl_lock();
4898
4899#ifdef CONFIG_PROC_FS 4545#ifdef CONFIG_PROC_FS
4900 bond_create_proc_dir(); 4546 bond_create_proc_dir();
4901#endif 4547#endif
4902
4903 for (i = 0; i < max_bonds; i++) { 4548 for (i = 0; i < max_bonds; i++) {
4904 struct net_device *bond_dev; 4549 sprintf(new_bond_name, "bond%d",i);
4905 4550 res = bond_create(new_bond_name,&bonding_defaults, NULL);
4906 bond_dev = alloc_netdev(sizeof(struct bonding), "", ether_setup); 4551 if (res)
4907 if (!bond_dev) { 4552 goto err;
4908 res = -ENOMEM;
4909 goto out_err;
4910 }
4911
4912 res = dev_alloc_name(bond_dev, "bond%d");
4913 if (res < 0) {
4914 free_netdev(bond_dev);
4915 goto out_err;
4916 }
4917
4918 /* bond_init() must be called after dev_alloc_name() (for the
4919 * /proc files), but before register_netdevice(), because we
4920 * need to set function pointers.
4921 */
4922 res = bond_init(bond_dev, &params);
4923 if (res < 0) {
4924 free_netdev(bond_dev);
4925 goto out_err;
4926 }
4927
4928 SET_MODULE_OWNER(bond_dev);
4929
4930 res = register_netdevice(bond_dev);
4931 if (res < 0) {
4932 bond_deinit(bond_dev);
4933 free_netdev(bond_dev);
4934 goto out_err;
4935 }
4936 } 4553 }
4937 4554
4938 rtnl_unlock(); 4555 res = bond_create_sysfs();
4556 if (res)
4557 goto err;
4558
4939 register_netdevice_notifier(&bond_netdev_notifier); 4559 register_netdevice_notifier(&bond_netdev_notifier);
4940 register_inetaddr_notifier(&bond_inetaddr_notifier); 4560 register_inetaddr_notifier(&bond_inetaddr_notifier);
4941 4561
4942 return 0; 4562 goto out;
4943 4563err:
4944out_err:
4945 /*
4946 * rtnl_unlock() will run netdev_run_todo(), putting the
4947 * thus-far-registered bonding devices into a state which
4948 * unregigister_netdevice() will accept
4949 */
4950 rtnl_unlock();
4951 rtnl_lock(); 4564 rtnl_lock();
4952
4953 /* free and unregister all bonds that were successfully added */
4954 bond_free_all(); 4565 bond_free_all();
4955 4566 bond_destroy_sysfs();
4956 rtnl_unlock(); 4567 rtnl_unlock();
4957 4568out:
4958 return res; 4569 return res;
4570
4959} 4571}
4960 4572
4961static void __exit bonding_exit(void) 4573static void __exit bonding_exit(void)
@@ -4965,6 +4577,7 @@ static void __exit bonding_exit(void)
4965 4577
4966 rtnl_lock(); 4578 rtnl_lock();
4967 bond_free_all(); 4579 bond_free_all();
4580 bond_destroy_sysfs();
4968 rtnl_unlock(); 4581 rtnl_unlock();
4969} 4582}
4970 4583
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-17 14:27:07 -0500