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1da177e4 LT |
1 | /* |
2 | * originally based on the dummy device. | |
3 | * | |
4 | * Copyright 1999, Thomas Davis, tadavis@lbl.gov. | |
5 | * Licensed under the GPL. Based on dummy.c, and eql.c devices. | |
6 | * | |
7 | * bonding.c: an Ethernet Bonding driver | |
8 | * | |
9 | * This is useful to talk to a Cisco EtherChannel compatible equipment: | |
10 | * Cisco 5500 | |
11 | * Sun Trunking (Solaris) | |
12 | * Alteon AceDirector Trunks | |
13 | * Linux Bonding | |
14 | * and probably many L2 switches ... | |
15 | * | |
16 | * How it works: | |
17 | * ifconfig bond0 ipaddress netmask up | |
18 | * will setup a network device, with an ip address. No mac address | |
19 | * will be assigned at this time. The hw mac address will come from | |
20 | * the first slave bonded to the channel. All slaves will then use | |
21 | * this hw mac address. | |
22 | * | |
23 | * ifconfig bond0 down | |
24 | * will release all slaves, marking them as down. | |
25 | * | |
26 | * ifenslave bond0 eth0 | |
27 | * will attach eth0 to bond0 as a slave. eth0 hw mac address will either | |
28 | * a: be used as initial mac address | |
29 | * b: if a hw mac address already is there, eth0's hw mac address | |
30 | * will then be set from bond0. | |
31 | * | |
1da177e4 LT |
32 | */ |
33 | ||
1da177e4 LT |
34 | #include <linux/kernel.h> |
35 | #include <linux/module.h> | |
1da177e4 LT |
36 | #include <linux/types.h> |
37 | #include <linux/fcntl.h> | |
38 | #include <linux/interrupt.h> | |
39 | #include <linux/ptrace.h> | |
40 | #include <linux/ioport.h> | |
41 | #include <linux/in.h> | |
169a3e66 | 42 | #include <net/ip.h> |
1da177e4 | 43 | #include <linux/ip.h> |
169a3e66 JV |
44 | #include <linux/tcp.h> |
45 | #include <linux/udp.h> | |
1da177e4 LT |
46 | #include <linux/slab.h> |
47 | #include <linux/string.h> | |
48 | #include <linux/init.h> | |
49 | #include <linux/timer.h> | |
50 | #include <linux/socket.h> | |
51 | #include <linux/ctype.h> | |
52 | #include <linux/inet.h> | |
53 | #include <linux/bitops.h> | |
3d632c3f | 54 | #include <linux/io.h> |
1da177e4 | 55 | #include <asm/system.h> |
1da177e4 | 56 | #include <asm/dma.h> |
3d632c3f | 57 | #include <linux/uaccess.h> |
1da177e4 LT |
58 | #include <linux/errno.h> |
59 | #include <linux/netdevice.h> | |
60 | #include <linux/inetdevice.h> | |
a816c7c7 | 61 | #include <linux/igmp.h> |
1da177e4 LT |
62 | #include <linux/etherdevice.h> |
63 | #include <linux/skbuff.h> | |
64 | #include <net/sock.h> | |
65 | #include <linux/rtnetlink.h> | |
66 | #include <linux/proc_fs.h> | |
67 | #include <linux/seq_file.h> | |
68 | #include <linux/smp.h> | |
69 | #include <linux/if_ether.h> | |
70 | #include <net/arp.h> | |
71 | #include <linux/mii.h> | |
72 | #include <linux/ethtool.h> | |
73 | #include <linux/if_vlan.h> | |
74 | #include <linux/if_bonding.h> | |
b63bb739 | 75 | #include <linux/jiffies.h> |
c3ade5ca | 76 | #include <net/route.h> |
457c4cbc | 77 | #include <net/net_namespace.h> |
ec87fd3b | 78 | #include <net/netns/generic.h> |
1da177e4 LT |
79 | #include "bonding.h" |
80 | #include "bond_3ad.h" | |
81 | #include "bond_alb.h" | |
82 | ||
83 | /*---------------------------- Module parameters ----------------------------*/ | |
84 | ||
85 | /* monitor all links that often (in milliseconds). <=0 disables monitoring */ | |
86 | #define BOND_LINK_MON_INTERV 0 | |
87 | #define BOND_LINK_ARP_INTERV 0 | |
88 | ||
89 | static int max_bonds = BOND_DEFAULT_MAX_BONDS; | |
7893b249 | 90 | static int num_grat_arp = 1; |
305d552a | 91 | static int num_unsol_na = 1; |
1da177e4 | 92 | static int miimon = BOND_LINK_MON_INTERV; |
3d632c3f SH |
93 | static int updelay; |
94 | static int downdelay; | |
1da177e4 | 95 | static int use_carrier = 1; |
3d632c3f SH |
96 | static char *mode; |
97 | static char *primary; | |
a549952a | 98 | static char *primary_reselect; |
3d632c3f SH |
99 | static char *lacp_rate; |
100 | static char *ad_select; | |
101 | static char *xmit_hash_policy; | |
1da177e4 | 102 | static int arp_interval = BOND_LINK_ARP_INTERV; |
3d632c3f SH |
103 | static char *arp_ip_target[BOND_MAX_ARP_TARGETS]; |
104 | static char *arp_validate; | |
105 | static char *fail_over_mac; | |
d2991f75 | 106 | static struct bond_params bonding_defaults; |
1da177e4 LT |
107 | |
108 | module_param(max_bonds, int, 0); | |
109 | MODULE_PARM_DESC(max_bonds, "Max number of bonded devices"); | |
7893b249 MS |
110 | module_param(num_grat_arp, int, 0644); |
111 | MODULE_PARM_DESC(num_grat_arp, "Number of gratuitous ARP packets to send on failover event"); | |
305d552a BH |
112 | module_param(num_unsol_na, int, 0644); |
113 | MODULE_PARM_DESC(num_unsol_na, "Number of unsolicited IPv6 Neighbor Advertisements packets to send on failover event"); | |
1da177e4 LT |
114 | module_param(miimon, int, 0); |
115 | MODULE_PARM_DESC(miimon, "Link check interval in milliseconds"); | |
116 | module_param(updelay, int, 0); | |
117 | MODULE_PARM_DESC(updelay, "Delay before considering link up, in milliseconds"); | |
118 | module_param(downdelay, int, 0); | |
2ac47660 MW |
119 | MODULE_PARM_DESC(downdelay, "Delay before considering link down, " |
120 | "in milliseconds"); | |
1da177e4 | 121 | module_param(use_carrier, int, 0); |
2ac47660 MW |
122 | MODULE_PARM_DESC(use_carrier, "Use netif_carrier_ok (vs MII ioctls) in miimon; " |
123 | "0 for off, 1 for on (default)"); | |
1da177e4 | 124 | module_param(mode, charp, 0); |
2ac47660 MW |
125 | MODULE_PARM_DESC(mode, "Mode of operation : 0 for balance-rr, " |
126 | "1 for active-backup, 2 for balance-xor, " | |
127 | "3 for broadcast, 4 for 802.3ad, 5 for balance-tlb, " | |
128 | "6 for balance-alb"); | |
1da177e4 LT |
129 | module_param(primary, charp, 0); |
130 | MODULE_PARM_DESC(primary, "Primary network device to use"); | |
a549952a JP |
131 | module_param(primary_reselect, charp, 0); |
132 | MODULE_PARM_DESC(primary_reselect, "Reselect primary slave " | |
133 | "once it comes up; " | |
134 | "0 for always (default), " | |
135 | "1 for only if speed of primary is " | |
136 | "better, " | |
137 | "2 for only on active slave " | |
138 | "failure"); | |
1da177e4 | 139 | module_param(lacp_rate, charp, 0); |
2ac47660 MW |
140 | MODULE_PARM_DESC(lacp_rate, "LACPDU tx rate to request from 802.3ad partner " |
141 | "(slow/fast)"); | |
fd989c83 JV |
142 | module_param(ad_select, charp, 0); |
143 | MODULE_PARM_DESC(ad_select, "803.ad aggregation selection logic: stable (0, default), bandwidth (1), count (2)"); | |
169a3e66 | 144 | module_param(xmit_hash_policy, charp, 0); |
2ac47660 MW |
145 | MODULE_PARM_DESC(xmit_hash_policy, "XOR hashing method: 0 for layer 2 (default)" |
146 | ", 1 for layer 3+4"); | |
1da177e4 LT |
147 | module_param(arp_interval, int, 0); |
148 | MODULE_PARM_DESC(arp_interval, "arp interval in milliseconds"); | |
149 | module_param_array(arp_ip_target, charp, NULL, 0); | |
150 | MODULE_PARM_DESC(arp_ip_target, "arp targets in n.n.n.n form"); | |
f5b2b966 JV |
151 | module_param(arp_validate, charp, 0); |
152 | MODULE_PARM_DESC(arp_validate, "validate src/dst of ARP probes: none (default), active, backup or all"); | |
3915c1e8 JV |
153 | module_param(fail_over_mac, charp, 0); |
154 | MODULE_PARM_DESC(fail_over_mac, "For active-backup, do not set all slaves to the same MAC. none (default), active or follow"); | |
1da177e4 LT |
155 | |
156 | /*----------------------------- Global variables ----------------------------*/ | |
157 | ||
f71e1309 | 158 | static const char * const version = |
1da177e4 LT |
159 | DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n"; |
160 | ||
ec87fd3b | 161 | int bond_net_id; |
1da177e4 | 162 | |
3d632c3f SH |
163 | static __be32 arp_target[BOND_MAX_ARP_TARGETS]; |
164 | static int arp_ip_count; | |
1da177e4 | 165 | static int bond_mode = BOND_MODE_ROUNDROBIN; |
3d632c3f SH |
166 | static int xmit_hashtype = BOND_XMIT_POLICY_LAYER2; |
167 | static int lacp_fast; | |
217df670 | 168 | |
1da177e4 | 169 | |
e97fd7c6 | 170 | const struct bond_parm_tbl bond_lacp_tbl[] = { |
1da177e4 LT |
171 | { "slow", AD_LACP_SLOW}, |
172 | { "fast", AD_LACP_FAST}, | |
173 | { NULL, -1}, | |
174 | }; | |
175 | ||
e97fd7c6 | 176 | const struct bond_parm_tbl bond_mode_tbl[] = { |
1da177e4 LT |
177 | { "balance-rr", BOND_MODE_ROUNDROBIN}, |
178 | { "active-backup", BOND_MODE_ACTIVEBACKUP}, | |
179 | { "balance-xor", BOND_MODE_XOR}, | |
180 | { "broadcast", BOND_MODE_BROADCAST}, | |
181 | { "802.3ad", BOND_MODE_8023AD}, | |
182 | { "balance-tlb", BOND_MODE_TLB}, | |
183 | { "balance-alb", BOND_MODE_ALB}, | |
184 | { NULL, -1}, | |
185 | }; | |
186 | ||
e97fd7c6 | 187 | const struct bond_parm_tbl xmit_hashtype_tbl[] = { |
169a3e66 JV |
188 | { "layer2", BOND_XMIT_POLICY_LAYER2}, |
189 | { "layer3+4", BOND_XMIT_POLICY_LAYER34}, | |
6f6652be | 190 | { "layer2+3", BOND_XMIT_POLICY_LAYER23}, |
169a3e66 JV |
191 | { NULL, -1}, |
192 | }; | |
193 | ||
e97fd7c6 | 194 | const struct bond_parm_tbl arp_validate_tbl[] = { |
f5b2b966 JV |
195 | { "none", BOND_ARP_VALIDATE_NONE}, |
196 | { "active", BOND_ARP_VALIDATE_ACTIVE}, | |
197 | { "backup", BOND_ARP_VALIDATE_BACKUP}, | |
198 | { "all", BOND_ARP_VALIDATE_ALL}, | |
199 | { NULL, -1}, | |
200 | }; | |
201 | ||
e97fd7c6 | 202 | const struct bond_parm_tbl fail_over_mac_tbl[] = { |
3915c1e8 JV |
203 | { "none", BOND_FOM_NONE}, |
204 | { "active", BOND_FOM_ACTIVE}, | |
205 | { "follow", BOND_FOM_FOLLOW}, | |
206 | { NULL, -1}, | |
207 | }; | |
208 | ||
a549952a JP |
209 | const struct bond_parm_tbl pri_reselect_tbl[] = { |
210 | { "always", BOND_PRI_RESELECT_ALWAYS}, | |
211 | { "better", BOND_PRI_RESELECT_BETTER}, | |
212 | { "failure", BOND_PRI_RESELECT_FAILURE}, | |
213 | { NULL, -1}, | |
214 | }; | |
215 | ||
fd989c83 JV |
216 | struct bond_parm_tbl ad_select_tbl[] = { |
217 | { "stable", BOND_AD_STABLE}, | |
218 | { "bandwidth", BOND_AD_BANDWIDTH}, | |
219 | { "count", BOND_AD_COUNT}, | |
220 | { NULL, -1}, | |
221 | }; | |
222 | ||
1da177e4 LT |
223 | /*-------------------------- Forward declarations ---------------------------*/ |
224 | ||
c3ade5ca | 225 | static void bond_send_gratuitous_arp(struct bonding *bond); |
181470fc | 226 | static int bond_init(struct net_device *bond_dev); |
c67dfb29 | 227 | static void bond_uninit(struct net_device *bond_dev); |
1da177e4 LT |
228 | |
229 | /*---------------------------- General routines -----------------------------*/ | |
230 | ||
4ad072c9 | 231 | static const char *bond_mode_name(int mode) |
1da177e4 | 232 | { |
77afc92b HE |
233 | static const char *names[] = { |
234 | [BOND_MODE_ROUNDROBIN] = "load balancing (round-robin)", | |
235 | [BOND_MODE_ACTIVEBACKUP] = "fault-tolerance (active-backup)", | |
236 | [BOND_MODE_XOR] = "load balancing (xor)", | |
237 | [BOND_MODE_BROADCAST] = "fault-tolerance (broadcast)", | |
3d632c3f | 238 | [BOND_MODE_8023AD] = "IEEE 802.3ad Dynamic link aggregation", |
77afc92b HE |
239 | [BOND_MODE_TLB] = "transmit load balancing", |
240 | [BOND_MODE_ALB] = "adaptive load balancing", | |
241 | }; | |
242 | ||
243 | if (mode < 0 || mode > BOND_MODE_ALB) | |
1da177e4 | 244 | return "unknown"; |
77afc92b HE |
245 | |
246 | return names[mode]; | |
1da177e4 LT |
247 | } |
248 | ||
249 | /*---------------------------------- VLAN -----------------------------------*/ | |
250 | ||
251 | /** | |
252 | * bond_add_vlan - add a new vlan id on bond | |
253 | * @bond: bond that got the notification | |
254 | * @vlan_id: the vlan id to add | |
255 | * | |
256 | * Returns -ENOMEM if allocation failed. | |
257 | */ | |
258 | static int bond_add_vlan(struct bonding *bond, unsigned short vlan_id) | |
259 | { | |
260 | struct vlan_entry *vlan; | |
261 | ||
5a03cdb7 | 262 | pr_debug("bond: %s, vlan id %d\n", |
3d632c3f | 263 | (bond ? bond->dev->name : "None"), vlan_id); |
1da177e4 | 264 | |
305d552a | 265 | vlan = kzalloc(sizeof(struct vlan_entry), GFP_KERNEL); |
3d632c3f | 266 | if (!vlan) |
1da177e4 | 267 | return -ENOMEM; |
1da177e4 LT |
268 | |
269 | INIT_LIST_HEAD(&vlan->vlan_list); | |
270 | vlan->vlan_id = vlan_id; | |
271 | ||
272 | write_lock_bh(&bond->lock); | |
273 | ||
274 | list_add_tail(&vlan->vlan_list, &bond->vlan_list); | |
275 | ||
276 | write_unlock_bh(&bond->lock); | |
277 | ||
5a03cdb7 | 278 | pr_debug("added VLAN ID %d on bond %s\n", vlan_id, bond->dev->name); |
1da177e4 LT |
279 | |
280 | return 0; | |
281 | } | |
282 | ||
283 | /** | |
284 | * bond_del_vlan - delete a vlan id from bond | |
285 | * @bond: bond that got the notification | |
286 | * @vlan_id: the vlan id to delete | |
287 | * | |
288 | * returns -ENODEV if @vlan_id was not found in @bond. | |
289 | */ | |
290 | static int bond_del_vlan(struct bonding *bond, unsigned short vlan_id) | |
291 | { | |
0883beca | 292 | struct vlan_entry *vlan; |
1da177e4 LT |
293 | int res = -ENODEV; |
294 | ||
5a03cdb7 | 295 | pr_debug("bond: %s, vlan id %d\n", bond->dev->name, vlan_id); |
1da177e4 LT |
296 | |
297 | write_lock_bh(&bond->lock); | |
298 | ||
0883beca | 299 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
1da177e4 LT |
300 | if (vlan->vlan_id == vlan_id) { |
301 | list_del(&vlan->vlan_list); | |
302 | ||
58402054 | 303 | if (bond_is_lb(bond)) |
1da177e4 | 304 | bond_alb_clear_vlan(bond, vlan_id); |
1da177e4 | 305 | |
5a03cdb7 | 306 | pr_debug("removed VLAN ID %d from bond %s\n", vlan_id, |
1da177e4 LT |
307 | bond->dev->name); |
308 | ||
309 | kfree(vlan); | |
310 | ||
311 | if (list_empty(&bond->vlan_list) && | |
312 | (bond->slave_cnt == 0)) { | |
313 | /* Last VLAN removed and no slaves, so | |
314 | * restore block on adding VLANs. This will | |
315 | * be removed once new slaves that are not | |
316 | * VLAN challenged will be added. | |
317 | */ | |
318 | bond->dev->features |= NETIF_F_VLAN_CHALLENGED; | |
319 | } | |
320 | ||
321 | res = 0; | |
322 | goto out; | |
323 | } | |
324 | } | |
325 | ||
5a03cdb7 | 326 | pr_debug("couldn't find VLAN ID %d in bond %s\n", vlan_id, |
1da177e4 LT |
327 | bond->dev->name); |
328 | ||
329 | out: | |
330 | write_unlock_bh(&bond->lock); | |
331 | return res; | |
332 | } | |
333 | ||
334 | /** | |
335 | * bond_has_challenged_slaves | |
336 | * @bond: the bond we're working on | |
337 | * | |
338 | * Searches the slave list. Returns 1 if a vlan challenged slave | |
339 | * was found, 0 otherwise. | |
340 | * | |
341 | * Assumes bond->lock is held. | |
342 | */ | |
343 | static int bond_has_challenged_slaves(struct bonding *bond) | |
344 | { | |
345 | struct slave *slave; | |
346 | int i; | |
347 | ||
348 | bond_for_each_slave(bond, slave, i) { | |
349 | if (slave->dev->features & NETIF_F_VLAN_CHALLENGED) { | |
5a03cdb7 | 350 | pr_debug("found VLAN challenged slave - %s\n", |
1da177e4 LT |
351 | slave->dev->name); |
352 | return 1; | |
353 | } | |
354 | } | |
355 | ||
5a03cdb7 | 356 | pr_debug("no VLAN challenged slaves found\n"); |
1da177e4 LT |
357 | return 0; |
358 | } | |
359 | ||
360 | /** | |
361 | * bond_next_vlan - safely skip to the next item in the vlans list. | |
362 | * @bond: the bond we're working on | |
363 | * @curr: item we're advancing from | |
364 | * | |
365 | * Returns %NULL if list is empty, bond->next_vlan if @curr is %NULL, | |
366 | * or @curr->next otherwise (even if it is @curr itself again). | |
3d632c3f | 367 | * |
1da177e4 LT |
368 | * Caller must hold bond->lock |
369 | */ | |
370 | struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr) | |
371 | { | |
372 | struct vlan_entry *next, *last; | |
373 | ||
3d632c3f | 374 | if (list_empty(&bond->vlan_list)) |
1da177e4 | 375 | return NULL; |
1da177e4 LT |
376 | |
377 | if (!curr) { | |
378 | next = list_entry(bond->vlan_list.next, | |
379 | struct vlan_entry, vlan_list); | |
380 | } else { | |
381 | last = list_entry(bond->vlan_list.prev, | |
382 | struct vlan_entry, vlan_list); | |
383 | if (last == curr) { | |
384 | next = list_entry(bond->vlan_list.next, | |
385 | struct vlan_entry, vlan_list); | |
386 | } else { | |
387 | next = list_entry(curr->vlan_list.next, | |
388 | struct vlan_entry, vlan_list); | |
389 | } | |
390 | } | |
391 | ||
392 | return next; | |
393 | } | |
394 | ||
395 | /** | |
396 | * bond_dev_queue_xmit - Prepare skb for xmit. | |
3d632c3f | 397 | * |
1da177e4 LT |
398 | * @bond: bond device that got this skb for tx. |
399 | * @skb: hw accel VLAN tagged skb to transmit | |
400 | * @slave_dev: slave that is supposed to xmit this skbuff | |
3d632c3f | 401 | * |
1da177e4 LT |
402 | * When the bond gets an skb to transmit that is |
403 | * already hardware accelerated VLAN tagged, and it | |
404 | * needs to relay this skb to a slave that is not | |
405 | * hw accel capable, the skb needs to be "unaccelerated", | |
406 | * i.e. strip the hwaccel tag and re-insert it as part | |
407 | * of the payload. | |
408 | */ | |
3d632c3f SH |
409 | int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, |
410 | struct net_device *slave_dev) | |
1da177e4 | 411 | { |
966bc6f4 | 412 | unsigned short uninitialized_var(vlan_id); |
1da177e4 LT |
413 | |
414 | if (!list_empty(&bond->vlan_list) && | |
415 | !(slave_dev->features & NETIF_F_HW_VLAN_TX) && | |
416 | vlan_get_tag(skb, &vlan_id) == 0) { | |
417 | skb->dev = slave_dev; | |
418 | skb = vlan_put_tag(skb, vlan_id); | |
419 | if (!skb) { | |
420 | /* vlan_put_tag() frees the skb in case of error, | |
421 | * so return success here so the calling functions | |
422 | * won't attempt to free is again. | |
423 | */ | |
424 | return 0; | |
425 | } | |
426 | } else { | |
427 | skb->dev = slave_dev; | |
428 | } | |
429 | ||
430 | skb->priority = 1; | |
431 | dev_queue_xmit(skb); | |
432 | ||
433 | return 0; | |
434 | } | |
435 | ||
436 | /* | |
437 | * In the following 3 functions, bond_vlan_rx_register(), bond_vlan_rx_add_vid | |
438 | * and bond_vlan_rx_kill_vid, We don't protect the slave list iteration with a | |
439 | * lock because: | |
440 | * a. This operation is performed in IOCTL context, | |
441 | * b. The operation is protected by the RTNL semaphore in the 8021q code, | |
442 | * c. Holding a lock with BH disabled while directly calling a base driver | |
443 | * entry point is generally a BAD idea. | |
3d632c3f | 444 | * |
1da177e4 LT |
445 | * The design of synchronization/protection for this operation in the 8021q |
446 | * module is good for one or more VLAN devices over a single physical device | |
447 | * and cannot be extended for a teaming solution like bonding, so there is a | |
448 | * potential race condition here where a net device from the vlan group might | |
449 | * be referenced (either by a base driver or the 8021q code) while it is being | |
450 | * removed from the system. However, it turns out we're not making matters | |
451 | * worse, and if it works for regular VLAN usage it will work here too. | |
452 | */ | |
453 | ||
454 | /** | |
455 | * bond_vlan_rx_register - Propagates registration to slaves | |
456 | * @bond_dev: bonding net device that got called | |
457 | * @grp: vlan group being registered | |
458 | */ | |
3d632c3f SH |
459 | static void bond_vlan_rx_register(struct net_device *bond_dev, |
460 | struct vlan_group *grp) | |
1da177e4 | 461 | { |
454d7c9b | 462 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
463 | struct slave *slave; |
464 | int i; | |
465 | ||
466 | bond->vlgrp = grp; | |
467 | ||
468 | bond_for_each_slave(bond, slave, i) { | |
469 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 470 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
471 | |
472 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
473 | slave_ops->ndo_vlan_rx_register) { |
474 | slave_ops->ndo_vlan_rx_register(slave_dev, grp); | |
1da177e4 LT |
475 | } |
476 | } | |
477 | } | |
478 | ||
479 | /** | |
480 | * bond_vlan_rx_add_vid - Propagates adding an id to slaves | |
481 | * @bond_dev: bonding net device that got called | |
482 | * @vid: vlan id being added | |
483 | */ | |
484 | static void bond_vlan_rx_add_vid(struct net_device *bond_dev, uint16_t vid) | |
485 | { | |
454d7c9b | 486 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
487 | struct slave *slave; |
488 | int i, res; | |
489 | ||
490 | bond_for_each_slave(bond, slave, i) { | |
491 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 492 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
493 | |
494 | if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && | |
eb7cc59a SH |
495 | slave_ops->ndo_vlan_rx_add_vid) { |
496 | slave_ops->ndo_vlan_rx_add_vid(slave_dev, vid); | |
1da177e4 LT |
497 | } |
498 | } | |
499 | ||
500 | res = bond_add_vlan(bond, vid); | |
501 | if (res) { | |
3d632c3f | 502 | pr_err(DRV_NAME |
4e0952c7 | 503 | ": %s: Error: Failed to add vlan id %d\n", |
1da177e4 LT |
504 | bond_dev->name, vid); |
505 | } | |
506 | } | |
507 | ||
508 | /** | |
509 | * bond_vlan_rx_kill_vid - Propagates deleting an id to slaves | |
510 | * @bond_dev: bonding net device that got called | |
511 | * @vid: vlan id being removed | |
512 | */ | |
513 | static void bond_vlan_rx_kill_vid(struct net_device *bond_dev, uint16_t vid) | |
514 | { | |
454d7c9b | 515 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
516 | struct slave *slave; |
517 | struct net_device *vlan_dev; | |
518 | int i, res; | |
519 | ||
520 | bond_for_each_slave(bond, slave, i) { | |
521 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 522 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
523 | |
524 | if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && | |
eb7cc59a | 525 | slave_ops->ndo_vlan_rx_kill_vid) { |
1da177e4 LT |
526 | /* Save and then restore vlan_dev in the grp array, |
527 | * since the slave's driver might clear it. | |
528 | */ | |
5c15bdec | 529 | vlan_dev = vlan_group_get_device(bond->vlgrp, vid); |
eb7cc59a | 530 | slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vid); |
5c15bdec | 531 | vlan_group_set_device(bond->vlgrp, vid, vlan_dev); |
1da177e4 LT |
532 | } |
533 | } | |
534 | ||
535 | res = bond_del_vlan(bond, vid); | |
536 | if (res) { | |
3d632c3f | 537 | pr_err(DRV_NAME |
4e0952c7 | 538 | ": %s: Error: Failed to remove vlan id %d\n", |
1da177e4 LT |
539 | bond_dev->name, vid); |
540 | } | |
541 | } | |
542 | ||
543 | static void bond_add_vlans_on_slave(struct bonding *bond, struct net_device *slave_dev) | |
544 | { | |
545 | struct vlan_entry *vlan; | |
eb7cc59a | 546 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
547 | |
548 | write_lock_bh(&bond->lock); | |
549 | ||
eb7cc59a | 550 | if (list_empty(&bond->vlan_list)) |
1da177e4 | 551 | goto out; |
1da177e4 LT |
552 | |
553 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
554 | slave_ops->ndo_vlan_rx_register) |
555 | slave_ops->ndo_vlan_rx_register(slave_dev, bond->vlgrp); | |
1da177e4 LT |
556 | |
557 | if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || | |
eb7cc59a | 558 | !(slave_ops->ndo_vlan_rx_add_vid)) |
1da177e4 | 559 | goto out; |
1da177e4 | 560 | |
eb7cc59a SH |
561 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) |
562 | slave_ops->ndo_vlan_rx_add_vid(slave_dev, vlan->vlan_id); | |
1da177e4 LT |
563 | |
564 | out: | |
565 | write_unlock_bh(&bond->lock); | |
566 | } | |
567 | ||
3d632c3f SH |
568 | static void bond_del_vlans_from_slave(struct bonding *bond, |
569 | struct net_device *slave_dev) | |
1da177e4 | 570 | { |
eb7cc59a | 571 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
572 | struct vlan_entry *vlan; |
573 | struct net_device *vlan_dev; | |
574 | ||
575 | write_lock_bh(&bond->lock); | |
576 | ||
eb7cc59a | 577 | if (list_empty(&bond->vlan_list)) |
1da177e4 | 578 | goto out; |
1da177e4 LT |
579 | |
580 | if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || | |
eb7cc59a | 581 | !(slave_ops->ndo_vlan_rx_kill_vid)) |
1da177e4 | 582 | goto unreg; |
1da177e4 LT |
583 | |
584 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { | |
585 | /* Save and then restore vlan_dev in the grp array, | |
586 | * since the slave's driver might clear it. | |
587 | */ | |
5c15bdec | 588 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
eb7cc59a | 589 | slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vlan->vlan_id); |
5c15bdec | 590 | vlan_group_set_device(bond->vlgrp, vlan->vlan_id, vlan_dev); |
1da177e4 LT |
591 | } |
592 | ||
593 | unreg: | |
594 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
595 | slave_ops->ndo_vlan_rx_register) |
596 | slave_ops->ndo_vlan_rx_register(slave_dev, NULL); | |
1da177e4 LT |
597 | |
598 | out: | |
599 | write_unlock_bh(&bond->lock); | |
600 | } | |
601 | ||
602 | /*------------------------------- Link status -------------------------------*/ | |
603 | ||
ff59c456 JV |
604 | /* |
605 | * Set the carrier state for the master according to the state of its | |
606 | * slaves. If any slaves are up, the master is up. In 802.3ad mode, | |
607 | * do special 802.3ad magic. | |
608 | * | |
609 | * Returns zero if carrier state does not change, nonzero if it does. | |
610 | */ | |
611 | static int bond_set_carrier(struct bonding *bond) | |
612 | { | |
613 | struct slave *slave; | |
614 | int i; | |
615 | ||
616 | if (bond->slave_cnt == 0) | |
617 | goto down; | |
618 | ||
619 | if (bond->params.mode == BOND_MODE_8023AD) | |
620 | return bond_3ad_set_carrier(bond); | |
621 | ||
622 | bond_for_each_slave(bond, slave, i) { | |
623 | if (slave->link == BOND_LINK_UP) { | |
624 | if (!netif_carrier_ok(bond->dev)) { | |
625 | netif_carrier_on(bond->dev); | |
626 | return 1; | |
627 | } | |
628 | return 0; | |
629 | } | |
630 | } | |
631 | ||
632 | down: | |
633 | if (netif_carrier_ok(bond->dev)) { | |
634 | netif_carrier_off(bond->dev); | |
635 | return 1; | |
636 | } | |
637 | return 0; | |
638 | } | |
639 | ||
1da177e4 LT |
640 | /* |
641 | * Get link speed and duplex from the slave's base driver | |
642 | * using ethtool. If for some reason the call fails or the | |
643 | * values are invalid, fake speed and duplex to 100/Full | |
644 | * and return error. | |
645 | */ | |
646 | static int bond_update_speed_duplex(struct slave *slave) | |
647 | { | |
648 | struct net_device *slave_dev = slave->dev; | |
1da177e4 | 649 | struct ethtool_cmd etool; |
61a44b9c | 650 | int res; |
1da177e4 LT |
651 | |
652 | /* Fake speed and duplex */ | |
653 | slave->speed = SPEED_100; | |
654 | slave->duplex = DUPLEX_FULL; | |
655 | ||
61a44b9c MW |
656 | if (!slave_dev->ethtool_ops || !slave_dev->ethtool_ops->get_settings) |
657 | return -1; | |
1da177e4 | 658 | |
61a44b9c MW |
659 | res = slave_dev->ethtool_ops->get_settings(slave_dev, &etool); |
660 | if (res < 0) | |
1da177e4 | 661 | return -1; |
1da177e4 | 662 | |
1da177e4 LT |
663 | switch (etool.speed) { |
664 | case SPEED_10: | |
665 | case SPEED_100: | |
666 | case SPEED_1000: | |
94dbffd5 | 667 | case SPEED_10000: |
1da177e4 LT |
668 | break; |
669 | default: | |
670 | return -1; | |
671 | } | |
672 | ||
673 | switch (etool.duplex) { | |
674 | case DUPLEX_FULL: | |
675 | case DUPLEX_HALF: | |
676 | break; | |
677 | default: | |
678 | return -1; | |
679 | } | |
680 | ||
681 | slave->speed = etool.speed; | |
682 | slave->duplex = etool.duplex; | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
687 | /* | |
688 | * if <dev> supports MII link status reporting, check its link status. | |
689 | * | |
690 | * We either do MII/ETHTOOL ioctls, or check netif_carrier_ok(), | |
3d632c3f | 691 | * depending upon the setting of the use_carrier parameter. |
1da177e4 LT |
692 | * |
693 | * Return either BMSR_LSTATUS, meaning that the link is up (or we | |
694 | * can't tell and just pretend it is), or 0, meaning that the link is | |
695 | * down. | |
696 | * | |
697 | * If reporting is non-zero, instead of faking link up, return -1 if | |
698 | * both ETHTOOL and MII ioctls fail (meaning the device does not | |
699 | * support them). If use_carrier is set, return whatever it says. | |
700 | * It'd be nice if there was a good way to tell if a driver supports | |
701 | * netif_carrier, but there really isn't. | |
702 | */ | |
3d632c3f SH |
703 | static int bond_check_dev_link(struct bonding *bond, |
704 | struct net_device *slave_dev, int reporting) | |
1da177e4 | 705 | { |
eb7cc59a | 706 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
d9d52832 | 707 | int (*ioctl)(struct net_device *, struct ifreq *, int); |
1da177e4 LT |
708 | struct ifreq ifr; |
709 | struct mii_ioctl_data *mii; | |
1da177e4 | 710 | |
6c988853 PG |
711 | if (!reporting && !netif_running(slave_dev)) |
712 | return 0; | |
713 | ||
eb7cc59a | 714 | if (bond->params.use_carrier) |
1da177e4 | 715 | return netif_carrier_ok(slave_dev) ? BMSR_LSTATUS : 0; |
1da177e4 | 716 | |
29112f4e JP |
717 | /* Try to get link status using Ethtool first. */ |
718 | if (slave_dev->ethtool_ops) { | |
719 | if (slave_dev->ethtool_ops->get_link) { | |
720 | u32 link; | |
721 | ||
722 | link = slave_dev->ethtool_ops->get_link(slave_dev); | |
723 | ||
724 | return link ? BMSR_LSTATUS : 0; | |
725 | } | |
726 | } | |
727 | ||
3d632c3f | 728 | /* Ethtool can't be used, fallback to MII ioctls. */ |
eb7cc59a | 729 | ioctl = slave_ops->ndo_do_ioctl; |
1da177e4 LT |
730 | if (ioctl) { |
731 | /* TODO: set pointer to correct ioctl on a per team member */ | |
732 | /* bases to make this more efficient. that is, once */ | |
733 | /* we determine the correct ioctl, we will always */ | |
734 | /* call it and not the others for that team */ | |
735 | /* member. */ | |
736 | ||
737 | /* | |
738 | * We cannot assume that SIOCGMIIPHY will also read a | |
739 | * register; not all network drivers (e.g., e100) | |
740 | * support that. | |
741 | */ | |
742 | ||
743 | /* Yes, the mii is overlaid on the ifreq.ifr_ifru */ | |
744 | strncpy(ifr.ifr_name, slave_dev->name, IFNAMSIZ); | |
745 | mii = if_mii(&ifr); | |
746 | if (IOCTL(slave_dev, &ifr, SIOCGMIIPHY) == 0) { | |
747 | mii->reg_num = MII_BMSR; | |
3d632c3f SH |
748 | if (IOCTL(slave_dev, &ifr, SIOCGMIIREG) == 0) |
749 | return mii->val_out & BMSR_LSTATUS; | |
1da177e4 LT |
750 | } |
751 | } | |
752 | ||
1da177e4 LT |
753 | /* |
754 | * If reporting, report that either there's no dev->do_ioctl, | |
61a44b9c | 755 | * or both SIOCGMIIREG and get_link failed (meaning that we |
1da177e4 LT |
756 | * cannot report link status). If not reporting, pretend |
757 | * we're ok. | |
758 | */ | |
3d632c3f | 759 | return reporting ? -1 : BMSR_LSTATUS; |
1da177e4 LT |
760 | } |
761 | ||
762 | /*----------------------------- Multicast list ------------------------------*/ | |
763 | ||
764 | /* | |
765 | * Returns 0 if dmi1 and dmi2 are the same, non-0 otherwise | |
766 | */ | |
3d632c3f SH |
767 | static inline int bond_is_dmi_same(const struct dev_mc_list *dmi1, |
768 | const struct dev_mc_list *dmi2) | |
1da177e4 LT |
769 | { |
770 | return memcmp(dmi1->dmi_addr, dmi2->dmi_addr, dmi1->dmi_addrlen) == 0 && | |
771 | dmi1->dmi_addrlen == dmi2->dmi_addrlen; | |
772 | } | |
773 | ||
774 | /* | |
775 | * returns dmi entry if found, NULL otherwise | |
776 | */ | |
3d632c3f SH |
777 | static struct dev_mc_list *bond_mc_list_find_dmi(struct dev_mc_list *dmi, |
778 | struct dev_mc_list *mc_list) | |
1da177e4 LT |
779 | { |
780 | struct dev_mc_list *idmi; | |
781 | ||
782 | for (idmi = mc_list; idmi; idmi = idmi->next) { | |
3d632c3f | 783 | if (bond_is_dmi_same(dmi, idmi)) |
1da177e4 | 784 | return idmi; |
1da177e4 LT |
785 | } |
786 | ||
787 | return NULL; | |
788 | } | |
789 | ||
790 | /* | |
791 | * Push the promiscuity flag down to appropriate slaves | |
792 | */ | |
7e1a1ac1 | 793 | static int bond_set_promiscuity(struct bonding *bond, int inc) |
1da177e4 | 794 | { |
7e1a1ac1 | 795 | int err = 0; |
1da177e4 LT |
796 | if (USES_PRIMARY(bond->params.mode)) { |
797 | /* write lock already acquired */ | |
798 | if (bond->curr_active_slave) { | |
7e1a1ac1 WC |
799 | err = dev_set_promiscuity(bond->curr_active_slave->dev, |
800 | inc); | |
1da177e4 LT |
801 | } |
802 | } else { | |
803 | struct slave *slave; | |
804 | int i; | |
805 | bond_for_each_slave(bond, slave, i) { | |
7e1a1ac1 WC |
806 | err = dev_set_promiscuity(slave->dev, inc); |
807 | if (err) | |
808 | return err; | |
1da177e4 LT |
809 | } |
810 | } | |
7e1a1ac1 | 811 | return err; |
1da177e4 LT |
812 | } |
813 | ||
814 | /* | |
815 | * Push the allmulti flag down to all slaves | |
816 | */ | |
7e1a1ac1 | 817 | static int bond_set_allmulti(struct bonding *bond, int inc) |
1da177e4 | 818 | { |
7e1a1ac1 | 819 | int err = 0; |
1da177e4 LT |
820 | if (USES_PRIMARY(bond->params.mode)) { |
821 | /* write lock already acquired */ | |
822 | if (bond->curr_active_slave) { | |
7e1a1ac1 WC |
823 | err = dev_set_allmulti(bond->curr_active_slave->dev, |
824 | inc); | |
1da177e4 LT |
825 | } |
826 | } else { | |
827 | struct slave *slave; | |
828 | int i; | |
829 | bond_for_each_slave(bond, slave, i) { | |
7e1a1ac1 WC |
830 | err = dev_set_allmulti(slave->dev, inc); |
831 | if (err) | |
832 | return err; | |
1da177e4 LT |
833 | } |
834 | } | |
7e1a1ac1 | 835 | return err; |
1da177e4 LT |
836 | } |
837 | ||
838 | /* | |
839 | * Add a Multicast address to slaves | |
840 | * according to mode | |
841 | */ | |
842 | static void bond_mc_add(struct bonding *bond, void *addr, int alen) | |
843 | { | |
844 | if (USES_PRIMARY(bond->params.mode)) { | |
845 | /* write lock already acquired */ | |
3d632c3f | 846 | if (bond->curr_active_slave) |
1da177e4 | 847 | dev_mc_add(bond->curr_active_slave->dev, addr, alen, 0); |
1da177e4 LT |
848 | } else { |
849 | struct slave *slave; | |
850 | int i; | |
3d632c3f SH |
851 | |
852 | bond_for_each_slave(bond, slave, i) | |
1da177e4 | 853 | dev_mc_add(slave->dev, addr, alen, 0); |
1da177e4 LT |
854 | } |
855 | } | |
856 | ||
857 | /* | |
858 | * Remove a multicast address from slave | |
859 | * according to mode | |
860 | */ | |
861 | static void bond_mc_delete(struct bonding *bond, void *addr, int alen) | |
862 | { | |
863 | if (USES_PRIMARY(bond->params.mode)) { | |
864 | /* write lock already acquired */ | |
3d632c3f SH |
865 | if (bond->curr_active_slave) |
866 | dev_mc_delete(bond->curr_active_slave->dev, addr, | |
867 | alen, 0); | |
1da177e4 LT |
868 | } else { |
869 | struct slave *slave; | |
870 | int i; | |
871 | bond_for_each_slave(bond, slave, i) { | |
872 | dev_mc_delete(slave->dev, addr, alen, 0); | |
873 | } | |
874 | } | |
875 | } | |
876 | ||
a816c7c7 JV |
877 | |
878 | /* | |
879 | * Retrieve the list of registered multicast addresses for the bonding | |
880 | * device and retransmit an IGMP JOIN request to the current active | |
881 | * slave. | |
882 | */ | |
883 | static void bond_resend_igmp_join_requests(struct bonding *bond) | |
884 | { | |
885 | struct in_device *in_dev; | |
886 | struct ip_mc_list *im; | |
887 | ||
888 | rcu_read_lock(); | |
889 | in_dev = __in_dev_get_rcu(bond->dev); | |
890 | if (in_dev) { | |
3d632c3f | 891 | for (im = in_dev->mc_list; im; im = im->next) |
a816c7c7 | 892 | ip_mc_rejoin_group(im); |
a816c7c7 JV |
893 | } |
894 | ||
895 | rcu_read_unlock(); | |
896 | } | |
897 | ||
1da177e4 LT |
898 | /* |
899 | * Totally destroys the mc_list in bond | |
900 | */ | |
901 | static void bond_mc_list_destroy(struct bonding *bond) | |
902 | { | |
903 | struct dev_mc_list *dmi; | |
904 | ||
905 | dmi = bond->mc_list; | |
906 | while (dmi) { | |
907 | bond->mc_list = dmi->next; | |
908 | kfree(dmi); | |
909 | dmi = bond->mc_list; | |
910 | } | |
3d632c3f SH |
911 | |
912 | bond->mc_list = NULL; | |
1da177e4 LT |
913 | } |
914 | ||
915 | /* | |
916 | * Copy all the Multicast addresses from src to the bonding device dst | |
917 | */ | |
de54f390 | 918 | static int bond_mc_list_copy(struct dev_mc_list *mc_list, struct bonding *bond, |
dd0fc66f | 919 | gfp_t gfp_flag) |
1da177e4 LT |
920 | { |
921 | struct dev_mc_list *dmi, *new_dmi; | |
922 | ||
923 | for (dmi = mc_list; dmi; dmi = dmi->next) { | |
de54f390 | 924 | new_dmi = kmalloc(sizeof(struct dev_mc_list), gfp_flag); |
1da177e4 LT |
925 | |
926 | if (!new_dmi) { | |
927 | /* FIXME: Potential memory leak !!! */ | |
928 | return -ENOMEM; | |
929 | } | |
930 | ||
931 | new_dmi->next = bond->mc_list; | |
932 | bond->mc_list = new_dmi; | |
933 | new_dmi->dmi_addrlen = dmi->dmi_addrlen; | |
934 | memcpy(new_dmi->dmi_addr, dmi->dmi_addr, dmi->dmi_addrlen); | |
935 | new_dmi->dmi_users = dmi->dmi_users; | |
936 | new_dmi->dmi_gusers = dmi->dmi_gusers; | |
937 | } | |
938 | ||
939 | return 0; | |
940 | } | |
941 | ||
942 | /* | |
943 | * flush all members of flush->mc_list from device dev->mc_list | |
944 | */ | |
3d632c3f SH |
945 | static void bond_mc_list_flush(struct net_device *bond_dev, |
946 | struct net_device *slave_dev) | |
1da177e4 | 947 | { |
454d7c9b | 948 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
949 | struct dev_mc_list *dmi; |
950 | ||
3d632c3f | 951 | for (dmi = bond_dev->mc_list; dmi; dmi = dmi->next) |
1da177e4 | 952 | dev_mc_delete(slave_dev, dmi->dmi_addr, dmi->dmi_addrlen, 0); |
1da177e4 LT |
953 | |
954 | if (bond->params.mode == BOND_MODE_8023AD) { | |
955 | /* del lacpdu mc addr from mc list */ | |
956 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; | |
957 | ||
958 | dev_mc_delete(slave_dev, lacpdu_multicast, ETH_ALEN, 0); | |
959 | } | |
960 | } | |
961 | ||
962 | /*--------------------------- Active slave change ---------------------------*/ | |
963 | ||
964 | /* | |
965 | * Update the mc list and multicast-related flags for the new and | |
966 | * old active slaves (if any) according to the multicast mode, and | |
967 | * promiscuous flags unconditionally. | |
968 | */ | |
3d632c3f SH |
969 | static void bond_mc_swap(struct bonding *bond, struct slave *new_active, |
970 | struct slave *old_active) | |
1da177e4 LT |
971 | { |
972 | struct dev_mc_list *dmi; | |
973 | ||
3d632c3f | 974 | if (!USES_PRIMARY(bond->params.mode)) |
1da177e4 LT |
975 | /* nothing to do - mc list is already up-to-date on |
976 | * all slaves | |
977 | */ | |
978 | return; | |
1da177e4 LT |
979 | |
980 | if (old_active) { | |
3d632c3f | 981 | if (bond->dev->flags & IFF_PROMISC) |
1da177e4 | 982 | dev_set_promiscuity(old_active->dev, -1); |
1da177e4 | 983 | |
3d632c3f | 984 | if (bond->dev->flags & IFF_ALLMULTI) |
1da177e4 | 985 | dev_set_allmulti(old_active->dev, -1); |
1da177e4 | 986 | |
3d632c3f SH |
987 | for (dmi = bond->dev->mc_list; dmi; dmi = dmi->next) |
988 | dev_mc_delete(old_active->dev, dmi->dmi_addr, | |
989 | dmi->dmi_addrlen, 0); | |
1da177e4 LT |
990 | } |
991 | ||
992 | if (new_active) { | |
7e1a1ac1 | 993 | /* FIXME: Signal errors upstream. */ |
3d632c3f | 994 | if (bond->dev->flags & IFF_PROMISC) |
1da177e4 | 995 | dev_set_promiscuity(new_active->dev, 1); |
1da177e4 | 996 | |
3d632c3f | 997 | if (bond->dev->flags & IFF_ALLMULTI) |
1da177e4 | 998 | dev_set_allmulti(new_active->dev, 1); |
1da177e4 | 999 | |
3d632c3f SH |
1000 | for (dmi = bond->dev->mc_list; dmi; dmi = dmi->next) |
1001 | dev_mc_add(new_active->dev, dmi->dmi_addr, | |
1002 | dmi->dmi_addrlen, 0); | |
a816c7c7 | 1003 | bond_resend_igmp_join_requests(bond); |
1da177e4 LT |
1004 | } |
1005 | } | |
1006 | ||
3915c1e8 JV |
1007 | /* |
1008 | * bond_do_fail_over_mac | |
1009 | * | |
1010 | * Perform special MAC address swapping for fail_over_mac settings | |
1011 | * | |
1012 | * Called with RTNL, bond->lock for read, curr_slave_lock for write_bh. | |
1013 | */ | |
1014 | static void bond_do_fail_over_mac(struct bonding *bond, | |
1015 | struct slave *new_active, | |
1016 | struct slave *old_active) | |
1f78d9f9 HE |
1017 | __releases(&bond->curr_slave_lock) |
1018 | __releases(&bond->lock) | |
1019 | __acquires(&bond->lock) | |
1020 | __acquires(&bond->curr_slave_lock) | |
3915c1e8 JV |
1021 | { |
1022 | u8 tmp_mac[ETH_ALEN]; | |
1023 | struct sockaddr saddr; | |
1024 | int rv; | |
1025 | ||
1026 | switch (bond->params.fail_over_mac) { | |
1027 | case BOND_FOM_ACTIVE: | |
1028 | if (new_active) | |
1029 | memcpy(bond->dev->dev_addr, new_active->dev->dev_addr, | |
1030 | new_active->dev->addr_len); | |
1031 | break; | |
1032 | case BOND_FOM_FOLLOW: | |
1033 | /* | |
1034 | * if new_active && old_active, swap them | |
1035 | * if just old_active, do nothing (going to no active slave) | |
1036 | * if just new_active, set new_active to bond's MAC | |
1037 | */ | |
1038 | if (!new_active) | |
1039 | return; | |
1040 | ||
1041 | write_unlock_bh(&bond->curr_slave_lock); | |
1042 | read_unlock(&bond->lock); | |
1043 | ||
1044 | if (old_active) { | |
1045 | memcpy(tmp_mac, new_active->dev->dev_addr, ETH_ALEN); | |
1046 | memcpy(saddr.sa_data, old_active->dev->dev_addr, | |
1047 | ETH_ALEN); | |
1048 | saddr.sa_family = new_active->dev->type; | |
1049 | } else { | |
1050 | memcpy(saddr.sa_data, bond->dev->dev_addr, ETH_ALEN); | |
1051 | saddr.sa_family = bond->dev->type; | |
1052 | } | |
1053 | ||
1054 | rv = dev_set_mac_address(new_active->dev, &saddr); | |
1055 | if (rv) { | |
3d632c3f | 1056 | pr_err(DRV_NAME |
3915c1e8 JV |
1057 | ": %s: Error %d setting MAC of slave %s\n", |
1058 | bond->dev->name, -rv, new_active->dev->name); | |
1059 | goto out; | |
1060 | } | |
1061 | ||
1062 | if (!old_active) | |
1063 | goto out; | |
1064 | ||
1065 | memcpy(saddr.sa_data, tmp_mac, ETH_ALEN); | |
1066 | saddr.sa_family = old_active->dev->type; | |
1067 | ||
1068 | rv = dev_set_mac_address(old_active->dev, &saddr); | |
1069 | if (rv) | |
3d632c3f | 1070 | pr_err(DRV_NAME |
3915c1e8 JV |
1071 | ": %s: Error %d setting MAC of slave %s\n", |
1072 | bond->dev->name, -rv, new_active->dev->name); | |
1073 | out: | |
1074 | read_lock(&bond->lock); | |
1075 | write_lock_bh(&bond->curr_slave_lock); | |
1076 | break; | |
1077 | default: | |
3d632c3f | 1078 | pr_err(DRV_NAME |
3915c1e8 JV |
1079 | ": %s: bond_do_fail_over_mac impossible: bad policy %d\n", |
1080 | bond->dev->name, bond->params.fail_over_mac); | |
1081 | break; | |
1082 | } | |
1083 | ||
1084 | } | |
1085 | ||
a549952a JP |
1086 | static bool bond_should_change_active(struct bonding *bond) |
1087 | { | |
1088 | struct slave *prim = bond->primary_slave; | |
1089 | struct slave *curr = bond->curr_active_slave; | |
1090 | ||
1091 | if (!prim || !curr || curr->link != BOND_LINK_UP) | |
1092 | return true; | |
1093 | if (bond->force_primary) { | |
1094 | bond->force_primary = false; | |
1095 | return true; | |
1096 | } | |
1097 | if (bond->params.primary_reselect == BOND_PRI_RESELECT_BETTER && | |
1098 | (prim->speed < curr->speed || | |
1099 | (prim->speed == curr->speed && prim->duplex <= curr->duplex))) | |
1100 | return false; | |
1101 | if (bond->params.primary_reselect == BOND_PRI_RESELECT_FAILURE) | |
1102 | return false; | |
1103 | return true; | |
1104 | } | |
3915c1e8 | 1105 | |
1da177e4 LT |
1106 | /** |
1107 | * find_best_interface - select the best available slave to be the active one | |
1108 | * @bond: our bonding struct | |
1109 | * | |
1110 | * Warning: Caller must hold curr_slave_lock for writing. | |
1111 | */ | |
1112 | static struct slave *bond_find_best_slave(struct bonding *bond) | |
1113 | { | |
1114 | struct slave *new_active, *old_active; | |
1115 | struct slave *bestslave = NULL; | |
1116 | int mintime = bond->params.updelay; | |
1117 | int i; | |
1118 | ||
49b4ad92 | 1119 | new_active = bond->curr_active_slave; |
1da177e4 LT |
1120 | |
1121 | if (!new_active) { /* there were no active slaves left */ | |
3d632c3f | 1122 | if (bond->slave_cnt > 0) /* found one slave */ |
1da177e4 | 1123 | new_active = bond->first_slave; |
3d632c3f | 1124 | else |
1da177e4 | 1125 | return NULL; /* still no slave, return NULL */ |
1da177e4 LT |
1126 | } |
1127 | ||
1da177e4 | 1128 | if ((bond->primary_slave) && |
a549952a JP |
1129 | bond->primary_slave->link == BOND_LINK_UP && |
1130 | bond_should_change_active(bond)) { | |
1da177e4 LT |
1131 | new_active = bond->primary_slave; |
1132 | } | |
1133 | ||
1134 | /* remember where to stop iterating over the slaves */ | |
1135 | old_active = new_active; | |
1136 | ||
1137 | bond_for_each_slave_from(bond, new_active, i, old_active) { | |
b9f60253 JP |
1138 | if (new_active->link == BOND_LINK_UP) { |
1139 | return new_active; | |
1140 | } else if (new_active->link == BOND_LINK_BACK && | |
1141 | IS_UP(new_active->dev)) { | |
1142 | /* link up, but waiting for stabilization */ | |
1143 | if (new_active->delay < mintime) { | |
1144 | mintime = new_active->delay; | |
1145 | bestslave = new_active; | |
1da177e4 LT |
1146 | } |
1147 | } | |
1148 | } | |
1149 | ||
1150 | return bestslave; | |
1151 | } | |
1152 | ||
1153 | /** | |
1154 | * change_active_interface - change the active slave into the specified one | |
1155 | * @bond: our bonding struct | |
1156 | * @new: the new slave to make the active one | |
1157 | * | |
1158 | * Set the new slave to the bond's settings and unset them on the old | |
1159 | * curr_active_slave. | |
1160 | * Setting include flags, mc-list, promiscuity, allmulti, etc. | |
1161 | * | |
1162 | * If @new's link state is %BOND_LINK_BACK we'll set it to %BOND_LINK_UP, | |
1163 | * because it is apparently the best available slave we have, even though its | |
1164 | * updelay hasn't timed out yet. | |
1165 | * | |
3915c1e8 JV |
1166 | * If new_active is not NULL, caller must hold bond->lock for read and |
1167 | * curr_slave_lock for write_bh. | |
1da177e4 | 1168 | */ |
a77b5325 | 1169 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active) |
1da177e4 LT |
1170 | { |
1171 | struct slave *old_active = bond->curr_active_slave; | |
1172 | ||
3d632c3f | 1173 | if (old_active == new_active) |
1da177e4 | 1174 | return; |
1da177e4 LT |
1175 | |
1176 | if (new_active) { | |
b2220cad JV |
1177 | new_active->jiffies = jiffies; |
1178 | ||
1da177e4 LT |
1179 | if (new_active->link == BOND_LINK_BACK) { |
1180 | if (USES_PRIMARY(bond->params.mode)) { | |
3d632c3f | 1181 | pr_info(DRV_NAME |
1da177e4 LT |
1182 | ": %s: making interface %s the new " |
1183 | "active one %d ms earlier.\n", | |
1184 | bond->dev->name, new_active->dev->name, | |
1185 | (bond->params.updelay - new_active->delay) * bond->params.miimon); | |
1186 | } | |
1187 | ||
1188 | new_active->delay = 0; | |
1189 | new_active->link = BOND_LINK_UP; | |
1da177e4 | 1190 | |
3d632c3f | 1191 | if (bond->params.mode == BOND_MODE_8023AD) |
1da177e4 | 1192 | bond_3ad_handle_link_change(new_active, BOND_LINK_UP); |
1da177e4 | 1193 | |
58402054 | 1194 | if (bond_is_lb(bond)) |
1da177e4 | 1195 | bond_alb_handle_link_change(bond, new_active, BOND_LINK_UP); |
1da177e4 LT |
1196 | } else { |
1197 | if (USES_PRIMARY(bond->params.mode)) { | |
3d632c3f | 1198 | pr_info(DRV_NAME |
1da177e4 LT |
1199 | ": %s: making interface %s the new " |
1200 | "active one.\n", | |
1201 | bond->dev->name, new_active->dev->name); | |
1202 | } | |
1203 | } | |
1204 | } | |
1205 | ||
3d632c3f | 1206 | if (USES_PRIMARY(bond->params.mode)) |
1da177e4 | 1207 | bond_mc_swap(bond, new_active, old_active); |
1da177e4 | 1208 | |
58402054 | 1209 | if (bond_is_lb(bond)) { |
1da177e4 | 1210 | bond_alb_handle_active_change(bond, new_active); |
8f903c70 JV |
1211 | if (old_active) |
1212 | bond_set_slave_inactive_flags(old_active); | |
1213 | if (new_active) | |
1214 | bond_set_slave_active_flags(new_active); | |
1da177e4 LT |
1215 | } else { |
1216 | bond->curr_active_slave = new_active; | |
1217 | } | |
c3ade5ca JV |
1218 | |
1219 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) { | |
3d632c3f | 1220 | if (old_active) |
c3ade5ca | 1221 | bond_set_slave_inactive_flags(old_active); |
c3ade5ca JV |
1222 | |
1223 | if (new_active) { | |
1224 | bond_set_slave_active_flags(new_active); | |
2ab82852 | 1225 | |
709f8a45 OG |
1226 | if (bond->params.fail_over_mac) |
1227 | bond_do_fail_over_mac(bond, new_active, | |
1228 | old_active); | |
3915c1e8 | 1229 | |
709f8a45 | 1230 | bond->send_grat_arp = bond->params.num_grat_arp; |
b59f9f74 | 1231 | bond_send_gratuitous_arp(bond); |
01f3109d | 1232 | |
305d552a BH |
1233 | bond->send_unsol_na = bond->params.num_unsol_na; |
1234 | bond_send_unsolicited_na(bond); | |
1235 | ||
01f3109d OG |
1236 | write_unlock_bh(&bond->curr_slave_lock); |
1237 | read_unlock(&bond->lock); | |
1238 | ||
75c78500 | 1239 | netdev_bonding_change(bond->dev, NETDEV_BONDING_FAILOVER); |
01f3109d OG |
1240 | |
1241 | read_lock(&bond->lock); | |
1242 | write_lock_bh(&bond->curr_slave_lock); | |
7893b249 | 1243 | } |
c3ade5ca | 1244 | } |
1da177e4 LT |
1245 | } |
1246 | ||
1247 | /** | |
1248 | * bond_select_active_slave - select a new active slave, if needed | |
1249 | * @bond: our bonding struct | |
1250 | * | |
3d632c3f | 1251 | * This functions should be called when one of the following occurs: |
1da177e4 LT |
1252 | * - The old curr_active_slave has been released or lost its link. |
1253 | * - The primary_slave has got its link back. | |
1254 | * - A slave has got its link back and there's no old curr_active_slave. | |
1255 | * | |
3915c1e8 | 1256 | * Caller must hold bond->lock for read and curr_slave_lock for write_bh. |
1da177e4 | 1257 | */ |
a77b5325 | 1258 | void bond_select_active_slave(struct bonding *bond) |
1da177e4 LT |
1259 | { |
1260 | struct slave *best_slave; | |
ff59c456 | 1261 | int rv; |
1da177e4 LT |
1262 | |
1263 | best_slave = bond_find_best_slave(bond); | |
1264 | if (best_slave != bond->curr_active_slave) { | |
1265 | bond_change_active_slave(bond, best_slave); | |
ff59c456 JV |
1266 | rv = bond_set_carrier(bond); |
1267 | if (!rv) | |
1268 | return; | |
1269 | ||
1270 | if (netif_carrier_ok(bond->dev)) { | |
3d632c3f | 1271 | pr_info(DRV_NAME |
ff59c456 JV |
1272 | ": %s: first active interface up!\n", |
1273 | bond->dev->name); | |
1274 | } else { | |
3d632c3f | 1275 | pr_info(DRV_NAME ": %s: " |
ff59c456 JV |
1276 | "now running without any active interface !\n", |
1277 | bond->dev->name); | |
1278 | } | |
1da177e4 LT |
1279 | } |
1280 | } | |
1281 | ||
1282 | /*--------------------------- slave list handling ---------------------------*/ | |
1283 | ||
1284 | /* | |
1285 | * This function attaches the slave to the end of list. | |
1286 | * | |
1287 | * bond->lock held for writing by caller. | |
1288 | */ | |
1289 | static void bond_attach_slave(struct bonding *bond, struct slave *new_slave) | |
1290 | { | |
1291 | if (bond->first_slave == NULL) { /* attaching the first slave */ | |
1292 | new_slave->next = new_slave; | |
1293 | new_slave->prev = new_slave; | |
1294 | bond->first_slave = new_slave; | |
1295 | } else { | |
1296 | new_slave->next = bond->first_slave; | |
1297 | new_slave->prev = bond->first_slave->prev; | |
1298 | new_slave->next->prev = new_slave; | |
1299 | new_slave->prev->next = new_slave; | |
1300 | } | |
1301 | ||
1302 | bond->slave_cnt++; | |
1303 | } | |
1304 | ||
1305 | /* | |
1306 | * This function detaches the slave from the list. | |
1307 | * WARNING: no check is made to verify if the slave effectively | |
1308 | * belongs to <bond>. | |
1309 | * Nothing is freed on return, structures are just unchained. | |
1310 | * If any slave pointer in bond was pointing to <slave>, | |
1311 | * it should be changed by the calling function. | |
1312 | * | |
1313 | * bond->lock held for writing by caller. | |
1314 | */ | |
1315 | static void bond_detach_slave(struct bonding *bond, struct slave *slave) | |
1316 | { | |
3d632c3f | 1317 | if (slave->next) |
1da177e4 | 1318 | slave->next->prev = slave->prev; |
1da177e4 | 1319 | |
3d632c3f | 1320 | if (slave->prev) |
1da177e4 | 1321 | slave->prev->next = slave->next; |
1da177e4 LT |
1322 | |
1323 | if (bond->first_slave == slave) { /* slave is the first slave */ | |
1324 | if (bond->slave_cnt > 1) { /* there are more slave */ | |
1325 | bond->first_slave = slave->next; | |
1326 | } else { | |
1327 | bond->first_slave = NULL; /* slave was the last one */ | |
1328 | } | |
1329 | } | |
1330 | ||
1331 | slave->next = NULL; | |
1332 | slave->prev = NULL; | |
1333 | bond->slave_cnt--; | |
1334 | } | |
1335 | ||
1336 | /*---------------------------------- IOCTL ----------------------------------*/ | |
1337 | ||
4ad072c9 AB |
1338 | static int bond_sethwaddr(struct net_device *bond_dev, |
1339 | struct net_device *slave_dev) | |
1da177e4 | 1340 | { |
5a03cdb7 HE |
1341 | pr_debug("bond_dev=%p\n", bond_dev); |
1342 | pr_debug("slave_dev=%p\n", slave_dev); | |
1343 | pr_debug("slave_dev->addr_len=%d\n", slave_dev->addr_len); | |
1da177e4 LT |
1344 | memcpy(bond_dev->dev_addr, slave_dev->dev_addr, slave_dev->addr_len); |
1345 | return 0; | |
1346 | } | |
1347 | ||
7f353bf2 HX |
1348 | #define BOND_VLAN_FEATURES \ |
1349 | (NETIF_F_VLAN_CHALLENGED | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX | \ | |
1350 | NETIF_F_HW_VLAN_FILTER) | |
8531c5ff | 1351 | |
3d632c3f | 1352 | /* |
8e3babcd | 1353 | * Compute the common dev->feature set available to all slaves. Some |
7f353bf2 HX |
1354 | * feature bits are managed elsewhere, so preserve those feature bits |
1355 | * on the master device. | |
8531c5ff AK |
1356 | */ |
1357 | static int bond_compute_features(struct bonding *bond) | |
1358 | { | |
8531c5ff AK |
1359 | struct slave *slave; |
1360 | struct net_device *bond_dev = bond->dev; | |
7f353bf2 | 1361 | unsigned long features = bond_dev->features; |
278339a4 | 1362 | unsigned long vlan_features = 0; |
3158bf7d MS |
1363 | unsigned short max_hard_header_len = max((u16)ETH_HLEN, |
1364 | bond_dev->hard_header_len); | |
8e3babcd | 1365 | int i; |
8531c5ff | 1366 | |
7f353bf2 | 1367 | features &= ~(NETIF_F_ALL_CSUM | BOND_VLAN_FEATURES); |
b63365a2 HX |
1368 | features |= NETIF_F_GSO_MASK | NETIF_F_NO_CSUM; |
1369 | ||
1370 | if (!bond->first_slave) | |
1371 | goto done; | |
1372 | ||
1373 | features &= ~NETIF_F_ONE_FOR_ALL; | |
7f353bf2 | 1374 | |
278339a4 | 1375 | vlan_features = bond->first_slave->dev->vlan_features; |
54ef3137 | 1376 | bond_for_each_slave(bond, slave, i) { |
b63365a2 HX |
1377 | features = netdev_increment_features(features, |
1378 | slave->dev->features, | |
1379 | NETIF_F_ONE_FOR_ALL); | |
278339a4 JV |
1380 | vlan_features = netdev_increment_features(vlan_features, |
1381 | slave->dev->vlan_features, | |
1382 | NETIF_F_ONE_FOR_ALL); | |
54ef3137 JV |
1383 | if (slave->dev->hard_header_len > max_hard_header_len) |
1384 | max_hard_header_len = slave->dev->hard_header_len; | |
1385 | } | |
8531c5ff | 1386 | |
b63365a2 | 1387 | done: |
7f353bf2 | 1388 | features |= (bond_dev->features & BOND_VLAN_FEATURES); |
b63365a2 | 1389 | bond_dev->features = netdev_fix_features(features, NULL); |
278339a4 | 1390 | bond_dev->vlan_features = netdev_fix_features(vlan_features, NULL); |
54ef3137 | 1391 | bond_dev->hard_header_len = max_hard_header_len; |
8531c5ff AK |
1392 | |
1393 | return 0; | |
1394 | } | |
1395 | ||
872254dd MS |
1396 | static void bond_setup_by_slave(struct net_device *bond_dev, |
1397 | struct net_device *slave_dev) | |
1398 | { | |
454d7c9b | 1399 | struct bonding *bond = netdev_priv(bond_dev); |
d90a162a | 1400 | |
00829823 | 1401 | bond_dev->header_ops = slave_dev->header_ops; |
872254dd MS |
1402 | |
1403 | bond_dev->type = slave_dev->type; | |
1404 | bond_dev->hard_header_len = slave_dev->hard_header_len; | |
1405 | bond_dev->addr_len = slave_dev->addr_len; | |
1406 | ||
1407 | memcpy(bond_dev->broadcast, slave_dev->broadcast, | |
1408 | slave_dev->addr_len); | |
d90a162a | 1409 | bond->setup_by_slave = 1; |
872254dd MS |
1410 | } |
1411 | ||
1da177e4 | 1412 | /* enslave device <slave> to bond device <master> */ |
a77b5325 | 1413 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) |
1da177e4 | 1414 | { |
454d7c9b | 1415 | struct bonding *bond = netdev_priv(bond_dev); |
eb7cc59a | 1416 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
1417 | struct slave *new_slave = NULL; |
1418 | struct dev_mc_list *dmi; | |
1419 | struct sockaddr addr; | |
1420 | int link_reporting; | |
1421 | int old_features = bond_dev->features; | |
1422 | int res = 0; | |
1423 | ||
552709d5 | 1424 | if (!bond->params.use_carrier && slave_dev->ethtool_ops == NULL && |
eb7cc59a | 1425 | slave_ops->ndo_do_ioctl == NULL) { |
3d632c3f | 1426 | pr_warning(DRV_NAME |
4e0952c7 MW |
1427 | ": %s: Warning: no link monitoring support for %s\n", |
1428 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1429 | } |
1430 | ||
1431 | /* bond must be initialized by bond_open() before enslaving */ | |
1432 | if (!(bond_dev->flags & IFF_UP)) { | |
3d632c3f | 1433 | pr_warning(DRV_NAME |
6b1bf096 MS |
1434 | " %s: master_dev is not up in bond_enslave\n", |
1435 | bond_dev->name); | |
1da177e4 LT |
1436 | } |
1437 | ||
1438 | /* already enslaved */ | |
1439 | if (slave_dev->flags & IFF_SLAVE) { | |
5a03cdb7 | 1440 | pr_debug("Error, Device was already enslaved\n"); |
1da177e4 LT |
1441 | return -EBUSY; |
1442 | } | |
1443 | ||
1444 | /* vlan challenged mutual exclusion */ | |
1445 | /* no need to lock since we're protected by rtnl_lock */ | |
1446 | if (slave_dev->features & NETIF_F_VLAN_CHALLENGED) { | |
5a03cdb7 | 1447 | pr_debug("%s: NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
1da177e4 | 1448 | if (!list_empty(&bond->vlan_list)) { |
3d632c3f | 1449 | pr_err(DRV_NAME |
4e0952c7 | 1450 | ": %s: Error: cannot enslave VLAN " |
1da177e4 | 1451 | "challenged slave %s on VLAN enabled " |
4e0952c7 | 1452 | "bond %s\n", bond_dev->name, slave_dev->name, |
1da177e4 LT |
1453 | bond_dev->name); |
1454 | return -EPERM; | |
1455 | } else { | |
3d632c3f | 1456 | pr_warning(DRV_NAME |
4e0952c7 | 1457 | ": %s: Warning: enslaved VLAN challenged " |
1da177e4 LT |
1458 | "slave %s. Adding VLANs will be blocked as " |
1459 | "long as %s is part of bond %s\n", | |
4e0952c7 | 1460 | bond_dev->name, slave_dev->name, slave_dev->name, |
1da177e4 LT |
1461 | bond_dev->name); |
1462 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; | |
1463 | } | |
1464 | } else { | |
5a03cdb7 | 1465 | pr_debug("%s: ! NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
1da177e4 LT |
1466 | if (bond->slave_cnt == 0) { |
1467 | /* First slave, and it is not VLAN challenged, | |
1468 | * so remove the block of adding VLANs over the bond. | |
1469 | */ | |
1470 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; | |
1471 | } | |
1472 | } | |
1473 | ||
217df670 JV |
1474 | /* |
1475 | * Old ifenslave binaries are no longer supported. These can | |
3d632c3f | 1476 | * be identified with moderate accuracy by the state of the slave: |
217df670 JV |
1477 | * the current ifenslave will set the interface down prior to |
1478 | * enslaving it; the old ifenslave will not. | |
1479 | */ | |
1480 | if ((slave_dev->flags & IFF_UP)) { | |
3d632c3f | 1481 | pr_err(DRV_NAME ": %s is up. " |
217df670 JV |
1482 | "This may be due to an out of date ifenslave.\n", |
1483 | slave_dev->name); | |
1484 | res = -EPERM; | |
1485 | goto err_undo_flags; | |
1486 | } | |
1da177e4 | 1487 | |
872254dd MS |
1488 | /* set bonding device ether type by slave - bonding netdevices are |
1489 | * created with ether_setup, so when the slave type is not ARPHRD_ETHER | |
1490 | * there is a need to override some of the type dependent attribs/funcs. | |
1491 | * | |
1492 | * bond ether type mutual exclusion - don't allow slaves of dissimilar | |
1493 | * ether type (eg ARPHRD_ETHER and ARPHRD_INFINIBAND) share the same bond | |
1494 | */ | |
1495 | if (bond->slave_cnt == 0) { | |
e36b9d16 | 1496 | if (bond_dev->type != slave_dev->type) { |
e36b9d16 MS |
1497 | pr_debug("%s: change device type from %d to %d\n", |
1498 | bond_dev->name, bond_dev->type, slave_dev->type); | |
75c78500 MS |
1499 | |
1500 | netdev_bonding_change(bond_dev, NETDEV_BONDING_OLDTYPE); | |
1501 | ||
e36b9d16 MS |
1502 | if (slave_dev->type != ARPHRD_ETHER) |
1503 | bond_setup_by_slave(bond_dev, slave_dev); | |
1504 | else | |
1505 | ether_setup(bond_dev); | |
75c78500 MS |
1506 | |
1507 | netdev_bonding_change(bond_dev, NETDEV_BONDING_NEWTYPE); | |
e36b9d16 | 1508 | } |
872254dd | 1509 | } else if (bond_dev->type != slave_dev->type) { |
3d632c3f | 1510 | pr_err(DRV_NAME ": %s ether type (%d) is different " |
872254dd MS |
1511 | "from other slaves (%d), can not enslave it.\n", |
1512 | slave_dev->name, | |
1513 | slave_dev->type, bond_dev->type); | |
1514 | res = -EINVAL; | |
1515 | goto err_undo_flags; | |
1516 | } | |
1517 | ||
eb7cc59a | 1518 | if (slave_ops->ndo_set_mac_address == NULL) { |
2ab82852 | 1519 | if (bond->slave_cnt == 0) { |
3d632c3f | 1520 | pr_warning(DRV_NAME |
dd957c57 JV |
1521 | ": %s: Warning: The first slave device " |
1522 | "specified does not support setting the MAC " | |
3915c1e8 | 1523 | "address. Setting fail_over_mac to active.", |
dd957c57 | 1524 | bond_dev->name); |
3915c1e8 JV |
1525 | bond->params.fail_over_mac = BOND_FOM_ACTIVE; |
1526 | } else if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { | |
3d632c3f | 1527 | pr_err(DRV_NAME |
dd957c57 JV |
1528 | ": %s: Error: The slave device specified " |
1529 | "does not support setting the MAC address, " | |
3915c1e8 | 1530 | "but fail_over_mac is not set to active.\n" |
2ab82852 MS |
1531 | , bond_dev->name); |
1532 | res = -EOPNOTSUPP; | |
1533 | goto err_undo_flags; | |
1534 | } | |
1da177e4 LT |
1535 | } |
1536 | ||
243cb4e5 | 1537 | new_slave = kzalloc(sizeof(struct slave), GFP_KERNEL); |
1da177e4 LT |
1538 | if (!new_slave) { |
1539 | res = -ENOMEM; | |
1540 | goto err_undo_flags; | |
1541 | } | |
1542 | ||
1da177e4 LT |
1543 | /* save slave's original flags before calling |
1544 | * netdev_set_master and dev_open | |
1545 | */ | |
1546 | new_slave->original_flags = slave_dev->flags; | |
1547 | ||
217df670 JV |
1548 | /* |
1549 | * Save slave's original ("permanent") mac address for modes | |
1550 | * that need it, and for restoring it upon release, and then | |
1551 | * set it to the master's address | |
1552 | */ | |
1553 | memcpy(new_slave->perm_hwaddr, slave_dev->dev_addr, ETH_ALEN); | |
1da177e4 | 1554 | |
dd957c57 | 1555 | if (!bond->params.fail_over_mac) { |
2ab82852 MS |
1556 | /* |
1557 | * Set slave to master's mac address. The application already | |
1558 | * set the master's mac address to that of the first slave | |
1559 | */ | |
1560 | memcpy(addr.sa_data, bond_dev->dev_addr, bond_dev->addr_len); | |
1561 | addr.sa_family = slave_dev->type; | |
1562 | res = dev_set_mac_address(slave_dev, &addr); | |
1563 | if (res) { | |
5a03cdb7 | 1564 | pr_debug("Error %d calling set_mac_address\n", res); |
2ab82852 MS |
1565 | goto err_free; |
1566 | } | |
217df670 | 1567 | } |
1da177e4 | 1568 | |
c2edacf8 JV |
1569 | res = netdev_set_master(slave_dev, bond_dev); |
1570 | if (res) { | |
5a03cdb7 | 1571 | pr_debug("Error %d calling netdev_set_master\n", res); |
569f0c4d | 1572 | goto err_restore_mac; |
c2edacf8 | 1573 | } |
217df670 JV |
1574 | /* open the slave since the application closed it */ |
1575 | res = dev_open(slave_dev); | |
1576 | if (res) { | |
3d632c3f | 1577 | pr_debug("Opening slave %s failed\n", slave_dev->name); |
569f0c4d | 1578 | goto err_unset_master; |
1da177e4 LT |
1579 | } |
1580 | ||
1da177e4 | 1581 | new_slave->dev = slave_dev; |
0b680e75 | 1582 | slave_dev->priv_flags |= IFF_BONDING; |
1da177e4 | 1583 | |
58402054 | 1584 | if (bond_is_lb(bond)) { |
1da177e4 LT |
1585 | /* bond_alb_init_slave() must be called before all other stages since |
1586 | * it might fail and we do not want to have to undo everything | |
1587 | */ | |
1588 | res = bond_alb_init_slave(bond, new_slave); | |
3d632c3f | 1589 | if (res) |
569f0c4d | 1590 | goto err_close; |
1da177e4 LT |
1591 | } |
1592 | ||
1593 | /* If the mode USES_PRIMARY, then the new slave gets the | |
1594 | * master's promisc (and mc) settings only if it becomes the | |
1595 | * curr_active_slave, and that is taken care of later when calling | |
1596 | * bond_change_active() | |
1597 | */ | |
1598 | if (!USES_PRIMARY(bond->params.mode)) { | |
1599 | /* set promiscuity level to new slave */ | |
1600 | if (bond_dev->flags & IFF_PROMISC) { | |
7e1a1ac1 WC |
1601 | res = dev_set_promiscuity(slave_dev, 1); |
1602 | if (res) | |
1603 | goto err_close; | |
1da177e4 LT |
1604 | } |
1605 | ||
1606 | /* set allmulti level to new slave */ | |
1607 | if (bond_dev->flags & IFF_ALLMULTI) { | |
7e1a1ac1 WC |
1608 | res = dev_set_allmulti(slave_dev, 1); |
1609 | if (res) | |
1610 | goto err_close; | |
1da177e4 LT |
1611 | } |
1612 | ||
b9e40857 | 1613 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 1614 | /* upload master's mc_list to new slave */ |
3d632c3f SH |
1615 | for (dmi = bond_dev->mc_list; dmi; dmi = dmi->next) |
1616 | dev_mc_add(slave_dev, dmi->dmi_addr, | |
1617 | dmi->dmi_addrlen, 0); | |
b9e40857 | 1618 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
1619 | } |
1620 | ||
1621 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1622 | /* add lacpdu mc addr to mc list */ | |
1623 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; | |
1624 | ||
1625 | dev_mc_add(slave_dev, lacpdu_multicast, ETH_ALEN, 0); | |
1626 | } | |
1627 | ||
1628 | bond_add_vlans_on_slave(bond, slave_dev); | |
1629 | ||
1630 | write_lock_bh(&bond->lock); | |
1631 | ||
1632 | bond_attach_slave(bond, new_slave); | |
1633 | ||
1634 | new_slave->delay = 0; | |
1635 | new_slave->link_failure_count = 0; | |
1636 | ||
8531c5ff AK |
1637 | bond_compute_features(bond); |
1638 | ||
3915c1e8 JV |
1639 | write_unlock_bh(&bond->lock); |
1640 | ||
1641 | read_lock(&bond->lock); | |
1642 | ||
f5b2b966 JV |
1643 | new_slave->last_arp_rx = jiffies; |
1644 | ||
1da177e4 LT |
1645 | if (bond->params.miimon && !bond->params.use_carrier) { |
1646 | link_reporting = bond_check_dev_link(bond, slave_dev, 1); | |
1647 | ||
1648 | if ((link_reporting == -1) && !bond->params.arp_interval) { | |
1649 | /* | |
1650 | * miimon is set but a bonded network driver | |
1651 | * does not support ETHTOOL/MII and | |
1652 | * arp_interval is not set. Note: if | |
1653 | * use_carrier is enabled, we will never go | |
1654 | * here (because netif_carrier is always | |
1655 | * supported); thus, we don't need to change | |
1656 | * the messages for netif_carrier. | |
1657 | */ | |
3d632c3f | 1658 | pr_warning(DRV_NAME |
4e0952c7 | 1659 | ": %s: Warning: MII and ETHTOOL support not " |
1da177e4 LT |
1660 | "available for interface %s, and " |
1661 | "arp_interval/arp_ip_target module parameters " | |
1662 | "not specified, thus bonding will not detect " | |
1663 | "link failures! see bonding.txt for details.\n", | |
4e0952c7 | 1664 | bond_dev->name, slave_dev->name); |
1da177e4 LT |
1665 | } else if (link_reporting == -1) { |
1666 | /* unable get link status using mii/ethtool */ | |
3d632c3f | 1667 | pr_warning(DRV_NAME |
4e0952c7 | 1668 | ": %s: Warning: can't get link status from " |
1da177e4 LT |
1669 | "interface %s; the network driver associated " |
1670 | "with this interface does not support MII or " | |
1671 | "ETHTOOL link status reporting, thus miimon " | |
1672 | "has no effect on this interface.\n", | |
4e0952c7 | 1673 | bond_dev->name, slave_dev->name); |
1da177e4 LT |
1674 | } |
1675 | } | |
1676 | ||
1677 | /* check for initial state */ | |
1678 | if (!bond->params.miimon || | |
1679 | (bond_check_dev_link(bond, slave_dev, 0) == BMSR_LSTATUS)) { | |
1680 | if (bond->params.updelay) { | |
5a03cdb7 | 1681 | pr_debug("Initial state of slave_dev is " |
1da177e4 LT |
1682 | "BOND_LINK_BACK\n"); |
1683 | new_slave->link = BOND_LINK_BACK; | |
1684 | new_slave->delay = bond->params.updelay; | |
1685 | } else { | |
5a03cdb7 | 1686 | pr_debug("Initial state of slave_dev is " |
1da177e4 LT |
1687 | "BOND_LINK_UP\n"); |
1688 | new_slave->link = BOND_LINK_UP; | |
1689 | } | |
1690 | new_slave->jiffies = jiffies; | |
1691 | } else { | |
5a03cdb7 | 1692 | pr_debug("Initial state of slave_dev is " |
1da177e4 LT |
1693 | "BOND_LINK_DOWN\n"); |
1694 | new_slave->link = BOND_LINK_DOWN; | |
1695 | } | |
1696 | ||
1697 | if (bond_update_speed_duplex(new_slave) && | |
1698 | (new_slave->link != BOND_LINK_DOWN)) { | |
3d632c3f | 1699 | pr_warning(DRV_NAME |
4e0952c7 | 1700 | ": %s: Warning: failed to get speed and duplex from %s, " |
1da177e4 | 1701 | "assumed to be 100Mb/sec and Full.\n", |
4e0952c7 | 1702 | bond_dev->name, new_slave->dev->name); |
1da177e4 LT |
1703 | |
1704 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3d632c3f | 1705 | pr_warning(DRV_NAME |
4e0952c7 | 1706 | ": %s: Warning: Operation of 802.3ad mode requires ETHTOOL " |
1da177e4 | 1707 | "support in base driver for proper aggregator " |
4e0952c7 | 1708 | "selection.\n", bond_dev->name); |
1da177e4 LT |
1709 | } |
1710 | } | |
1711 | ||
1712 | if (USES_PRIMARY(bond->params.mode) && bond->params.primary[0]) { | |
1713 | /* if there is a primary slave, remember it */ | |
a549952a | 1714 | if (strcmp(bond->params.primary, new_slave->dev->name) == 0) { |
1da177e4 | 1715 | bond->primary_slave = new_slave; |
a549952a JP |
1716 | bond->force_primary = true; |
1717 | } | |
1da177e4 LT |
1718 | } |
1719 | ||
3915c1e8 JV |
1720 | write_lock_bh(&bond->curr_slave_lock); |
1721 | ||
1da177e4 LT |
1722 | switch (bond->params.mode) { |
1723 | case BOND_MODE_ACTIVEBACKUP: | |
8a8e447b JV |
1724 | bond_set_slave_inactive_flags(new_slave); |
1725 | bond_select_active_slave(bond); | |
1da177e4 LT |
1726 | break; |
1727 | case BOND_MODE_8023AD: | |
1728 | /* in 802.3ad mode, the internal mechanism | |
1729 | * will activate the slaves in the selected | |
1730 | * aggregator | |
1731 | */ | |
1732 | bond_set_slave_inactive_flags(new_slave); | |
1733 | /* if this is the first slave */ | |
1734 | if (bond->slave_cnt == 1) { | |
1735 | SLAVE_AD_INFO(new_slave).id = 1; | |
1736 | /* Initialize AD with the number of times that the AD timer is called in 1 second | |
1737 | * can be called only after the mac address of the bond is set | |
1738 | */ | |
1739 | bond_3ad_initialize(bond, 1000/AD_TIMER_INTERVAL, | |
1740 | bond->params.lacp_fast); | |
1741 | } else { | |
1742 | SLAVE_AD_INFO(new_slave).id = | |
1743 | SLAVE_AD_INFO(new_slave->prev).id + 1; | |
1744 | } | |
1745 | ||
1746 | bond_3ad_bind_slave(new_slave); | |
1747 | break; | |
1748 | case BOND_MODE_TLB: | |
1749 | case BOND_MODE_ALB: | |
1750 | new_slave->state = BOND_STATE_ACTIVE; | |
059fe7a5 | 1751 | bond_set_slave_inactive_flags(new_slave); |
5a29f789 | 1752 | bond_select_active_slave(bond); |
1da177e4 LT |
1753 | break; |
1754 | default: | |
5a03cdb7 | 1755 | pr_debug("This slave is always active in trunk mode\n"); |
1da177e4 LT |
1756 | |
1757 | /* always active in trunk mode */ | |
1758 | new_slave->state = BOND_STATE_ACTIVE; | |
1759 | ||
1760 | /* In trunking mode there is little meaning to curr_active_slave | |
1761 | * anyway (it holds no special properties of the bond device), | |
1762 | * so we can change it without calling change_active_interface() | |
1763 | */ | |
3d632c3f | 1764 | if (!bond->curr_active_slave) |
1da177e4 | 1765 | bond->curr_active_slave = new_slave; |
3d632c3f | 1766 | |
1da177e4 LT |
1767 | break; |
1768 | } /* switch(bond_mode) */ | |
1769 | ||
3915c1e8 JV |
1770 | write_unlock_bh(&bond->curr_slave_lock); |
1771 | ||
ff59c456 JV |
1772 | bond_set_carrier(bond); |
1773 | ||
3915c1e8 | 1774 | read_unlock(&bond->lock); |
1da177e4 | 1775 | |
b76cdba9 MW |
1776 | res = bond_create_slave_symlinks(bond_dev, slave_dev); |
1777 | if (res) | |
569f0c4d | 1778 | goto err_close; |
b76cdba9 | 1779 | |
3d632c3f | 1780 | pr_info(DRV_NAME |
1da177e4 LT |
1781 | ": %s: enslaving %s as a%s interface with a%s link.\n", |
1782 | bond_dev->name, slave_dev->name, | |
1783 | new_slave->state == BOND_STATE_ACTIVE ? "n active" : " backup", | |
1784 | new_slave->link != BOND_LINK_DOWN ? "n up" : " down"); | |
1785 | ||
1786 | /* enslave is successful */ | |
1787 | return 0; | |
1788 | ||
1789 | /* Undo stages on error */ | |
1da177e4 LT |
1790 | err_close: |
1791 | dev_close(slave_dev); | |
1792 | ||
569f0c4d JV |
1793 | err_unset_master: |
1794 | netdev_set_master(slave_dev, NULL); | |
1795 | ||
1da177e4 | 1796 | err_restore_mac: |
dd957c57 | 1797 | if (!bond->params.fail_over_mac) { |
3915c1e8 JV |
1798 | /* XXX TODO - fom follow mode needs to change master's |
1799 | * MAC if this slave's MAC is in use by the bond, or at | |
1800 | * least print a warning. | |
1801 | */ | |
2ab82852 MS |
1802 | memcpy(addr.sa_data, new_slave->perm_hwaddr, ETH_ALEN); |
1803 | addr.sa_family = slave_dev->type; | |
1804 | dev_set_mac_address(slave_dev, &addr); | |
1805 | } | |
1da177e4 LT |
1806 | |
1807 | err_free: | |
1808 | kfree(new_slave); | |
1809 | ||
1810 | err_undo_flags: | |
1811 | bond_dev->features = old_features; | |
3d632c3f | 1812 | |
1da177e4 LT |
1813 | return res; |
1814 | } | |
1815 | ||
1816 | /* | |
1817 | * Try to release the slave device <slave> from the bond device <master> | |
1818 | * It is legal to access curr_active_slave without a lock because all the function | |
1819 | * is write-locked. | |
1820 | * | |
1821 | * The rules for slave state should be: | |
1822 | * for Active/Backup: | |
1823 | * Active stays on all backups go down | |
1824 | * for Bonded connections: | |
1825 | * The first up interface should be left on and all others downed. | |
1826 | */ | |
a77b5325 | 1827 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev) |
1da177e4 | 1828 | { |
454d7c9b | 1829 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
1830 | struct slave *slave, *oldcurrent; |
1831 | struct sockaddr addr; | |
1da177e4 LT |
1832 | |
1833 | /* slave is not a slave or master is not master of this slave */ | |
1834 | if (!(slave_dev->flags & IFF_SLAVE) || | |
1835 | (slave_dev->master != bond_dev)) { | |
3d632c3f | 1836 | pr_err(DRV_NAME |
4e0952c7 | 1837 | ": %s: Error: cannot release %s.\n", |
1da177e4 LT |
1838 | bond_dev->name, slave_dev->name); |
1839 | return -EINVAL; | |
1840 | } | |
1841 | ||
1842 | write_lock_bh(&bond->lock); | |
1843 | ||
1844 | slave = bond_get_slave_by_dev(bond, slave_dev); | |
1845 | if (!slave) { | |
1846 | /* not a slave of this bond */ | |
3d632c3f | 1847 | pr_info(DRV_NAME |
1da177e4 LT |
1848 | ": %s: %s not enslaved\n", |
1849 | bond_dev->name, slave_dev->name); | |
f5e2a7b2 | 1850 | write_unlock_bh(&bond->lock); |
1da177e4 LT |
1851 | return -EINVAL; |
1852 | } | |
1853 | ||
3915c1e8 | 1854 | if (!bond->params.fail_over_mac) { |
89c76c62 SH |
1855 | if (!compare_ether_addr(bond_dev->dev_addr, slave->perm_hwaddr) |
1856 | && bond->slave_cnt > 1) | |
3d632c3f | 1857 | pr_warning(DRV_NAME |
3915c1e8 | 1858 | ": %s: Warning: the permanent HWaddr of %s - " |
e174961c | 1859 | "%pM - is still in use by %s. " |
3915c1e8 JV |
1860 | "Set the HWaddr of %s to a different address " |
1861 | "to avoid conflicts.\n", | |
1862 | bond_dev->name, slave_dev->name, | |
e174961c | 1863 | slave->perm_hwaddr, |
3915c1e8 | 1864 | bond_dev->name, slave_dev->name); |
1da177e4 LT |
1865 | } |
1866 | ||
1867 | /* Inform AD package of unbinding of slave. */ | |
1868 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1869 | /* must be called before the slave is | |
1870 | * detached from the list | |
1871 | */ | |
1872 | bond_3ad_unbind_slave(slave); | |
1873 | } | |
1874 | ||
3d632c3f | 1875 | pr_info(DRV_NAME |
1da177e4 LT |
1876 | ": %s: releasing %s interface %s\n", |
1877 | bond_dev->name, | |
1878 | (slave->state == BOND_STATE_ACTIVE) | |
1879 | ? "active" : "backup", | |
1880 | slave_dev->name); | |
1881 | ||
1882 | oldcurrent = bond->curr_active_slave; | |
1883 | ||
1884 | bond->current_arp_slave = NULL; | |
1885 | ||
1886 | /* release the slave from its bond */ | |
1887 | bond_detach_slave(bond, slave); | |
1888 | ||
8531c5ff AK |
1889 | bond_compute_features(bond); |
1890 | ||
3d632c3f | 1891 | if (bond->primary_slave == slave) |
1da177e4 | 1892 | bond->primary_slave = NULL; |
1da177e4 | 1893 | |
3d632c3f | 1894 | if (oldcurrent == slave) |
1da177e4 | 1895 | bond_change_active_slave(bond, NULL); |
1da177e4 | 1896 | |
58402054 | 1897 | if (bond_is_lb(bond)) { |
1da177e4 LT |
1898 | /* Must be called only after the slave has been |
1899 | * detached from the list and the curr_active_slave | |
1900 | * has been cleared (if our_slave == old_current), | |
1901 | * but before a new active slave is selected. | |
1902 | */ | |
2543331d | 1903 | write_unlock_bh(&bond->lock); |
1da177e4 | 1904 | bond_alb_deinit_slave(bond, slave); |
2543331d | 1905 | write_lock_bh(&bond->lock); |
1da177e4 LT |
1906 | } |
1907 | ||
059fe7a5 JV |
1908 | if (oldcurrent == slave) { |
1909 | /* | |
1910 | * Note that we hold RTNL over this sequence, so there | |
1911 | * is no concern that another slave add/remove event | |
1912 | * will interfere. | |
1913 | */ | |
1914 | write_unlock_bh(&bond->lock); | |
1915 | read_lock(&bond->lock); | |
1916 | write_lock_bh(&bond->curr_slave_lock); | |
1917 | ||
1da177e4 LT |
1918 | bond_select_active_slave(bond); |
1919 | ||
059fe7a5 JV |
1920 | write_unlock_bh(&bond->curr_slave_lock); |
1921 | read_unlock(&bond->lock); | |
1922 | write_lock_bh(&bond->lock); | |
1923 | } | |
1924 | ||
1da177e4 | 1925 | if (bond->slave_cnt == 0) { |
ff59c456 JV |
1926 | bond_set_carrier(bond); |
1927 | ||
1da177e4 LT |
1928 | /* if the last slave was removed, zero the mac address |
1929 | * of the master so it will be set by the application | |
1930 | * to the mac address of the first slave | |
1931 | */ | |
1932 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); | |
1933 | ||
1934 | if (list_empty(&bond->vlan_list)) { | |
1935 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; | |
1936 | } else { | |
3d632c3f | 1937 | pr_warning(DRV_NAME |
4e0952c7 | 1938 | ": %s: Warning: clearing HW address of %s while it " |
1da177e4 | 1939 | "still has VLANs.\n", |
4e0952c7 | 1940 | bond_dev->name, bond_dev->name); |
3d632c3f | 1941 | pr_warning(DRV_NAME |
4e0952c7 MW |
1942 | ": %s: When re-adding slaves, make sure the bond's " |
1943 | "HW address matches its VLANs'.\n", | |
1944 | bond_dev->name); | |
1da177e4 LT |
1945 | } |
1946 | } else if ((bond_dev->features & NETIF_F_VLAN_CHALLENGED) && | |
1947 | !bond_has_challenged_slaves(bond)) { | |
3d632c3f | 1948 | pr_info(DRV_NAME |
4e0952c7 | 1949 | ": %s: last VLAN challenged slave %s " |
1da177e4 | 1950 | "left bond %s. VLAN blocking is removed\n", |
4e0952c7 | 1951 | bond_dev->name, slave_dev->name, bond_dev->name); |
1da177e4 LT |
1952 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; |
1953 | } | |
1954 | ||
1955 | write_unlock_bh(&bond->lock); | |
1956 | ||
b76cdba9 MW |
1957 | /* must do this from outside any spinlocks */ |
1958 | bond_destroy_slave_symlinks(bond_dev, slave_dev); | |
1959 | ||
1da177e4 LT |
1960 | bond_del_vlans_from_slave(bond, slave_dev); |
1961 | ||
1962 | /* If the mode USES_PRIMARY, then we should only remove its | |
1963 | * promisc and mc settings if it was the curr_active_slave, but that was | |
1964 | * already taken care of above when we detached the slave | |
1965 | */ | |
1966 | if (!USES_PRIMARY(bond->params.mode)) { | |
1967 | /* unset promiscuity level from slave */ | |
3d632c3f | 1968 | if (bond_dev->flags & IFF_PROMISC) |
1da177e4 | 1969 | dev_set_promiscuity(slave_dev, -1); |
1da177e4 LT |
1970 | |
1971 | /* unset allmulti level from slave */ | |
3d632c3f | 1972 | if (bond_dev->flags & IFF_ALLMULTI) |
1da177e4 | 1973 | dev_set_allmulti(slave_dev, -1); |
1da177e4 LT |
1974 | |
1975 | /* flush master's mc_list from slave */ | |
b9e40857 | 1976 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 1977 | bond_mc_list_flush(bond_dev, slave_dev); |
b9e40857 | 1978 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
1979 | } |
1980 | ||
1981 | netdev_set_master(slave_dev, NULL); | |
1982 | ||
1983 | /* close slave before restoring its mac address */ | |
1984 | dev_close(slave_dev); | |
1985 | ||
3915c1e8 | 1986 | if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { |
2ab82852 MS |
1987 | /* restore original ("permanent") mac address */ |
1988 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); | |
1989 | addr.sa_family = slave_dev->type; | |
1990 | dev_set_mac_address(slave_dev, &addr); | |
1991 | } | |
1da177e4 | 1992 | |
8f903c70 | 1993 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
f5b2b966 JV |
1994 | IFF_SLAVE_INACTIVE | IFF_BONDING | |
1995 | IFF_SLAVE_NEEDARP); | |
1da177e4 LT |
1996 | |
1997 | kfree(slave); | |
1998 | ||
1999 | return 0; /* deletion OK */ | |
2000 | } | |
2001 | ||
d90a162a | 2002 | /* |
3d632c3f | 2003 | * First release a slave and than destroy the bond if no more slaves are left. |
d90a162a MS |
2004 | * Must be under rtnl_lock when this function is called. |
2005 | */ | |
3d632c3f SH |
2006 | int bond_release_and_destroy(struct net_device *bond_dev, |
2007 | struct net_device *slave_dev) | |
d90a162a | 2008 | { |
454d7c9b | 2009 | struct bonding *bond = netdev_priv(bond_dev); |
d90a162a MS |
2010 | int ret; |
2011 | ||
2012 | ret = bond_release(bond_dev, slave_dev); | |
2013 | if ((ret == 0) && (bond->slave_cnt == 0)) { | |
3d632c3f | 2014 | pr_info(DRV_NAME ": %s: destroying bond %s.\n", |
d90a162a | 2015 | bond_dev->name, bond_dev->name); |
9e71626c | 2016 | unregister_netdevice(bond_dev); |
d90a162a MS |
2017 | } |
2018 | return ret; | |
2019 | } | |
2020 | ||
1da177e4 LT |
2021 | /* |
2022 | * This function releases all slaves. | |
2023 | */ | |
2024 | static int bond_release_all(struct net_device *bond_dev) | |
2025 | { | |
454d7c9b | 2026 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2027 | struct slave *slave; |
2028 | struct net_device *slave_dev; | |
2029 | struct sockaddr addr; | |
2030 | ||
2031 | write_lock_bh(&bond->lock); | |
2032 | ||
ff59c456 JV |
2033 | netif_carrier_off(bond_dev); |
2034 | ||
3d632c3f | 2035 | if (bond->slave_cnt == 0) |
1da177e4 | 2036 | goto out; |
1da177e4 LT |
2037 | |
2038 | bond->current_arp_slave = NULL; | |
2039 | bond->primary_slave = NULL; | |
2040 | bond_change_active_slave(bond, NULL); | |
2041 | ||
2042 | while ((slave = bond->first_slave) != NULL) { | |
2043 | /* Inform AD package of unbinding of slave | |
2044 | * before slave is detached from the list. | |
2045 | */ | |
3d632c3f | 2046 | if (bond->params.mode == BOND_MODE_8023AD) |
1da177e4 | 2047 | bond_3ad_unbind_slave(slave); |
1da177e4 LT |
2048 | |
2049 | slave_dev = slave->dev; | |
2050 | bond_detach_slave(bond, slave); | |
2051 | ||
2543331d JV |
2052 | /* now that the slave is detached, unlock and perform |
2053 | * all the undo steps that should not be called from | |
2054 | * within a lock. | |
2055 | */ | |
2056 | write_unlock_bh(&bond->lock); | |
2057 | ||
58402054 | 2058 | if (bond_is_lb(bond)) { |
1da177e4 LT |
2059 | /* must be called only after the slave |
2060 | * has been detached from the list | |
2061 | */ | |
2062 | bond_alb_deinit_slave(bond, slave); | |
2063 | } | |
2064 | ||
8531c5ff AK |
2065 | bond_compute_features(bond); |
2066 | ||
b76cdba9 | 2067 | bond_destroy_slave_symlinks(bond_dev, slave_dev); |
1da177e4 LT |
2068 | bond_del_vlans_from_slave(bond, slave_dev); |
2069 | ||
2070 | /* If the mode USES_PRIMARY, then we should only remove its | |
2071 | * promisc and mc settings if it was the curr_active_slave, but that was | |
2072 | * already taken care of above when we detached the slave | |
2073 | */ | |
2074 | if (!USES_PRIMARY(bond->params.mode)) { | |
2075 | /* unset promiscuity level from slave */ | |
3d632c3f | 2076 | if (bond_dev->flags & IFF_PROMISC) |
1da177e4 | 2077 | dev_set_promiscuity(slave_dev, -1); |
1da177e4 LT |
2078 | |
2079 | /* unset allmulti level from slave */ | |
3d632c3f | 2080 | if (bond_dev->flags & IFF_ALLMULTI) |
1da177e4 | 2081 | dev_set_allmulti(slave_dev, -1); |
1da177e4 LT |
2082 | |
2083 | /* flush master's mc_list from slave */ | |
b9e40857 | 2084 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 2085 | bond_mc_list_flush(bond_dev, slave_dev); |
b9e40857 | 2086 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
2087 | } |
2088 | ||
2089 | netdev_set_master(slave_dev, NULL); | |
2090 | ||
2091 | /* close slave before restoring its mac address */ | |
2092 | dev_close(slave_dev); | |
2093 | ||
dd957c57 | 2094 | if (!bond->params.fail_over_mac) { |
2ab82852 MS |
2095 | /* restore original ("permanent") mac address*/ |
2096 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); | |
2097 | addr.sa_family = slave_dev->type; | |
2098 | dev_set_mac_address(slave_dev, &addr); | |
2099 | } | |
1da177e4 | 2100 | |
8f903c70 JV |
2101 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
2102 | IFF_SLAVE_INACTIVE); | |
1da177e4 LT |
2103 | |
2104 | kfree(slave); | |
2105 | ||
2106 | /* re-acquire the lock before getting the next slave */ | |
2107 | write_lock_bh(&bond->lock); | |
2108 | } | |
2109 | ||
2110 | /* zero the mac address of the master so it will be | |
2111 | * set by the application to the mac address of the | |
2112 | * first slave | |
2113 | */ | |
2114 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); | |
2115 | ||
3d632c3f | 2116 | if (list_empty(&bond->vlan_list)) |
1da177e4 | 2117 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
3d632c3f SH |
2118 | else { |
2119 | pr_warning(DRV_NAME | |
4e0952c7 | 2120 | ": %s: Warning: clearing HW address of %s while it " |
1da177e4 | 2121 | "still has VLANs.\n", |
4e0952c7 | 2122 | bond_dev->name, bond_dev->name); |
3d632c3f | 2123 | pr_warning(DRV_NAME |
4e0952c7 MW |
2124 | ": %s: When re-adding slaves, make sure the bond's " |
2125 | "HW address matches its VLANs'.\n", | |
2126 | bond_dev->name); | |
1da177e4 LT |
2127 | } |
2128 | ||
3d632c3f | 2129 | pr_info(DRV_NAME |
1da177e4 LT |
2130 | ": %s: released all slaves\n", |
2131 | bond_dev->name); | |
2132 | ||
2133 | out: | |
2134 | write_unlock_bh(&bond->lock); | |
2135 | ||
2136 | return 0; | |
2137 | } | |
2138 | ||
2139 | /* | |
2140 | * This function changes the active slave to slave <slave_dev>. | |
2141 | * It returns -EINVAL in the following cases. | |
2142 | * - <slave_dev> is not found in the list. | |
2143 | * - There is not active slave now. | |
2144 | * - <slave_dev> is already active. | |
2145 | * - The link state of <slave_dev> is not BOND_LINK_UP. | |
2146 | * - <slave_dev> is not running. | |
3d632c3f SH |
2147 | * In these cases, this function does nothing. |
2148 | * In the other cases, current_slave pointer is changed and 0 is returned. | |
1da177e4 LT |
2149 | */ |
2150 | static int bond_ioctl_change_active(struct net_device *bond_dev, struct net_device *slave_dev) | |
2151 | { | |
454d7c9b | 2152 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2153 | struct slave *old_active = NULL; |
2154 | struct slave *new_active = NULL; | |
2155 | int res = 0; | |
2156 | ||
3d632c3f | 2157 | if (!USES_PRIMARY(bond->params.mode)) |
1da177e4 | 2158 | return -EINVAL; |
1da177e4 LT |
2159 | |
2160 | /* Verify that master_dev is indeed the master of slave_dev */ | |
3d632c3f | 2161 | if (!(slave_dev->flags & IFF_SLAVE) || (slave_dev->master != bond_dev)) |
1da177e4 | 2162 | return -EINVAL; |
1da177e4 | 2163 | |
059fe7a5 | 2164 | read_lock(&bond->lock); |
1da177e4 | 2165 | |
059fe7a5 | 2166 | read_lock(&bond->curr_slave_lock); |
1da177e4 | 2167 | old_active = bond->curr_active_slave; |
059fe7a5 JV |
2168 | read_unlock(&bond->curr_slave_lock); |
2169 | ||
1da177e4 LT |
2170 | new_active = bond_get_slave_by_dev(bond, slave_dev); |
2171 | ||
2172 | /* | |
2173 | * Changing to the current active: do nothing; return success. | |
2174 | */ | |
2175 | if (new_active && (new_active == old_active)) { | |
059fe7a5 | 2176 | read_unlock(&bond->lock); |
1da177e4 LT |
2177 | return 0; |
2178 | } | |
2179 | ||
2180 | if ((new_active) && | |
2181 | (old_active) && | |
2182 | (new_active->link == BOND_LINK_UP) && | |
2183 | IS_UP(new_active->dev)) { | |
059fe7a5 | 2184 | write_lock_bh(&bond->curr_slave_lock); |
1da177e4 | 2185 | bond_change_active_slave(bond, new_active); |
059fe7a5 | 2186 | write_unlock_bh(&bond->curr_slave_lock); |
3d632c3f | 2187 | } else |
1da177e4 | 2188 | res = -EINVAL; |
1da177e4 | 2189 | |
059fe7a5 | 2190 | read_unlock(&bond->lock); |
1da177e4 LT |
2191 | |
2192 | return res; | |
2193 | } | |
2194 | ||
1da177e4 LT |
2195 | static int bond_info_query(struct net_device *bond_dev, struct ifbond *info) |
2196 | { | |
454d7c9b | 2197 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2198 | |
2199 | info->bond_mode = bond->params.mode; | |
2200 | info->miimon = bond->params.miimon; | |
2201 | ||
6603a6f2 | 2202 | read_lock(&bond->lock); |
1da177e4 | 2203 | info->num_slaves = bond->slave_cnt; |
6603a6f2 | 2204 | read_unlock(&bond->lock); |
1da177e4 LT |
2205 | |
2206 | return 0; | |
2207 | } | |
2208 | ||
2209 | static int bond_slave_info_query(struct net_device *bond_dev, struct ifslave *info) | |
2210 | { | |
454d7c9b | 2211 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 2212 | struct slave *slave; |
689c96cc | 2213 | int i, res = -ENODEV; |
1da177e4 | 2214 | |
6603a6f2 | 2215 | read_lock(&bond->lock); |
1da177e4 LT |
2216 | |
2217 | bond_for_each_slave(bond, slave, i) { | |
2218 | if (i == (int)info->slave_id) { | |
689c96cc ED |
2219 | res = 0; |
2220 | strcpy(info->slave_name, slave->dev->name); | |
2221 | info->link = slave->link; | |
2222 | info->state = slave->state; | |
2223 | info->link_failure_count = slave->link_failure_count; | |
1da177e4 LT |
2224 | break; |
2225 | } | |
2226 | } | |
2227 | ||
6603a6f2 | 2228 | read_unlock(&bond->lock); |
1da177e4 | 2229 | |
689c96cc | 2230 | return res; |
1da177e4 LT |
2231 | } |
2232 | ||
2233 | /*-------------------------------- Monitoring -------------------------------*/ | |
2234 | ||
1da177e4 | 2235 | |
f0c76d61 JV |
2236 | static int bond_miimon_inspect(struct bonding *bond) |
2237 | { | |
2238 | struct slave *slave; | |
2239 | int i, link_state, commit = 0; | |
41f89100 JP |
2240 | bool ignore_updelay; |
2241 | ||
2242 | ignore_updelay = !bond->curr_active_slave ? true : false; | |
1da177e4 LT |
2243 | |
2244 | bond_for_each_slave(bond, slave, i) { | |
f0c76d61 | 2245 | slave->new_link = BOND_LINK_NOCHANGE; |
1da177e4 | 2246 | |
f0c76d61 | 2247 | link_state = bond_check_dev_link(bond, slave->dev, 0); |
1da177e4 LT |
2248 | |
2249 | switch (slave->link) { | |
f0c76d61 JV |
2250 | case BOND_LINK_UP: |
2251 | if (link_state) | |
2252 | continue; | |
1da177e4 | 2253 | |
f0c76d61 JV |
2254 | slave->link = BOND_LINK_FAIL; |
2255 | slave->delay = bond->params.downdelay; | |
2256 | if (slave->delay) { | |
3d632c3f | 2257 | pr_info(DRV_NAME |
f0c76d61 JV |
2258 | ": %s: link status down for %s" |
2259 | "interface %s, disabling it in %d ms.\n", | |
2260 | bond->dev->name, | |
2261 | (bond->params.mode == | |
2262 | BOND_MODE_ACTIVEBACKUP) ? | |
2263 | ((slave->state == BOND_STATE_ACTIVE) ? | |
2264 | "active " : "backup ") : "", | |
2265 | slave->dev->name, | |
2266 | bond->params.downdelay * bond->params.miimon); | |
1da177e4 | 2267 | } |
f0c76d61 JV |
2268 | /*FALLTHRU*/ |
2269 | case BOND_LINK_FAIL: | |
2270 | if (link_state) { | |
2271 | /* | |
2272 | * recovered before downdelay expired | |
2273 | */ | |
2274 | slave->link = BOND_LINK_UP; | |
1da177e4 | 2275 | slave->jiffies = jiffies; |
3d632c3f | 2276 | pr_info(DRV_NAME |
1da177e4 LT |
2277 | ": %s: link status up again after %d " |
2278 | "ms for interface %s.\n", | |
1b76b316 | 2279 | bond->dev->name, |
f0c76d61 JV |
2280 | (bond->params.downdelay - slave->delay) * |
2281 | bond->params.miimon, | |
2282 | slave->dev->name); | |
2283 | continue; | |
1da177e4 | 2284 | } |
f0c76d61 JV |
2285 | |
2286 | if (slave->delay <= 0) { | |
2287 | slave->new_link = BOND_LINK_DOWN; | |
2288 | commit++; | |
2289 | continue; | |
1da177e4 | 2290 | } |
1da177e4 | 2291 | |
f0c76d61 JV |
2292 | slave->delay--; |
2293 | break; | |
2294 | ||
2295 | case BOND_LINK_DOWN: | |
2296 | if (!link_state) | |
2297 | continue; | |
2298 | ||
2299 | slave->link = BOND_LINK_BACK; | |
2300 | slave->delay = bond->params.updelay; | |
2301 | ||
2302 | if (slave->delay) { | |
3d632c3f | 2303 | pr_info(DRV_NAME |
f0c76d61 JV |
2304 | ": %s: link status up for " |
2305 | "interface %s, enabling it in %d ms.\n", | |
2306 | bond->dev->name, slave->dev->name, | |
41f89100 | 2307 | ignore_updelay ? 0 : |
f0c76d61 JV |
2308 | bond->params.updelay * |
2309 | bond->params.miimon); | |
2310 | } | |
2311 | /*FALLTHRU*/ | |
2312 | case BOND_LINK_BACK: | |
2313 | if (!link_state) { | |
2314 | slave->link = BOND_LINK_DOWN; | |
3d632c3f | 2315 | pr_info(DRV_NAME |
1da177e4 LT |
2316 | ": %s: link status down again after %d " |
2317 | "ms for interface %s.\n", | |
1b76b316 | 2318 | bond->dev->name, |
f0c76d61 JV |
2319 | (bond->params.updelay - slave->delay) * |
2320 | bond->params.miimon, | |
2321 | slave->dev->name); | |
2322 | ||
2323 | continue; | |
2324 | } | |
2325 | ||
41f89100 JP |
2326 | if (ignore_updelay) |
2327 | slave->delay = 0; | |
2328 | ||
f0c76d61 JV |
2329 | if (slave->delay <= 0) { |
2330 | slave->new_link = BOND_LINK_UP; | |
2331 | commit++; | |
41f89100 | 2332 | ignore_updelay = false; |
f0c76d61 | 2333 | continue; |
1da177e4 | 2334 | } |
f0c76d61 JV |
2335 | |
2336 | slave->delay--; | |
1da177e4 | 2337 | break; |
f0c76d61 JV |
2338 | } |
2339 | } | |
1da177e4 | 2340 | |
f0c76d61 JV |
2341 | return commit; |
2342 | } | |
1da177e4 | 2343 | |
f0c76d61 JV |
2344 | static void bond_miimon_commit(struct bonding *bond) |
2345 | { | |
2346 | struct slave *slave; | |
2347 | int i; | |
2348 | ||
2349 | bond_for_each_slave(bond, slave, i) { | |
2350 | switch (slave->new_link) { | |
2351 | case BOND_LINK_NOCHANGE: | |
2352 | continue; | |
1da177e4 | 2353 | |
f0c76d61 JV |
2354 | case BOND_LINK_UP: |
2355 | slave->link = BOND_LINK_UP; | |
2356 | slave->jiffies = jiffies; | |
2357 | ||
2358 | if (bond->params.mode == BOND_MODE_8023AD) { | |
2359 | /* prevent it from being the active one */ | |
2360 | slave->state = BOND_STATE_BACKUP; | |
2361 | } else if (bond->params.mode != BOND_MODE_ACTIVEBACKUP) { | |
2362 | /* make it immediately active */ | |
2363 | slave->state = BOND_STATE_ACTIVE; | |
2364 | } else if (slave != bond->primary_slave) { | |
2365 | /* prevent it from being the active one */ | |
2366 | slave->state = BOND_STATE_BACKUP; | |
1da177e4 | 2367 | } |
1da177e4 | 2368 | |
3d632c3f | 2369 | pr_info(DRV_NAME |
f0c76d61 JV |
2370 | ": %s: link status definitely " |
2371 | "up for interface %s.\n", | |
2372 | bond->dev->name, slave->dev->name); | |
1da177e4 | 2373 | |
f0c76d61 JV |
2374 | /* notify ad that the link status has changed */ |
2375 | if (bond->params.mode == BOND_MODE_8023AD) | |
2376 | bond_3ad_handle_link_change(slave, BOND_LINK_UP); | |
059fe7a5 | 2377 | |
58402054 | 2378 | if (bond_is_lb(bond)) |
f0c76d61 JV |
2379 | bond_alb_handle_link_change(bond, slave, |
2380 | BOND_LINK_UP); | |
1da177e4 | 2381 | |
f0c76d61 JV |
2382 | if (!bond->curr_active_slave || |
2383 | (slave == bond->primary_slave)) | |
2384 | goto do_failover; | |
1da177e4 | 2385 | |
f0c76d61 | 2386 | continue; |
059fe7a5 | 2387 | |
f0c76d61 | 2388 | case BOND_LINK_DOWN: |
fba4acda JV |
2389 | if (slave->link_failure_count < UINT_MAX) |
2390 | slave->link_failure_count++; | |
2391 | ||
f0c76d61 | 2392 | slave->link = BOND_LINK_DOWN; |
1da177e4 | 2393 | |
f0c76d61 JV |
2394 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP || |
2395 | bond->params.mode == BOND_MODE_8023AD) | |
2396 | bond_set_slave_inactive_flags(slave); | |
2397 | ||
3d632c3f | 2398 | pr_info(DRV_NAME |
f0c76d61 JV |
2399 | ": %s: link status definitely down for " |
2400 | "interface %s, disabling it\n", | |
2401 | bond->dev->name, slave->dev->name); | |
2402 | ||
2403 | if (bond->params.mode == BOND_MODE_8023AD) | |
2404 | bond_3ad_handle_link_change(slave, | |
2405 | BOND_LINK_DOWN); | |
2406 | ||
ae63e808 | 2407 | if (bond_is_lb(bond)) |
f0c76d61 JV |
2408 | bond_alb_handle_link_change(bond, slave, |
2409 | BOND_LINK_DOWN); | |
2410 | ||
2411 | if (slave == bond->curr_active_slave) | |
2412 | goto do_failover; | |
2413 | ||
2414 | continue; | |
2415 | ||
2416 | default: | |
3d632c3f | 2417 | pr_err(DRV_NAME |
f0c76d61 JV |
2418 | ": %s: invalid new link %d on slave %s\n", |
2419 | bond->dev->name, slave->new_link, | |
2420 | slave->dev->name); | |
2421 | slave->new_link = BOND_LINK_NOCHANGE; | |
2422 | ||
2423 | continue; | |
2424 | } | |
2425 | ||
2426 | do_failover: | |
2427 | ASSERT_RTNL(); | |
2428 | write_lock_bh(&bond->curr_slave_lock); | |
2429 | bond_select_active_slave(bond); | |
2430 | write_unlock_bh(&bond->curr_slave_lock); | |
2431 | } | |
2432 | ||
2433 | bond_set_carrier(bond); | |
1da177e4 LT |
2434 | } |
2435 | ||
0b0eef66 JV |
2436 | /* |
2437 | * bond_mii_monitor | |
2438 | * | |
2439 | * Really a wrapper that splits the mii monitor into two phases: an | |
f0c76d61 JV |
2440 | * inspection, then (if inspection indicates something needs to be done) |
2441 | * an acquisition of appropriate locks followed by a commit phase to | |
2442 | * implement whatever link state changes are indicated. | |
0b0eef66 JV |
2443 | */ |
2444 | void bond_mii_monitor(struct work_struct *work) | |
2445 | { | |
2446 | struct bonding *bond = container_of(work, struct bonding, | |
2447 | mii_work.work); | |
0b0eef66 JV |
2448 | |
2449 | read_lock(&bond->lock); | |
f0c76d61 JV |
2450 | if (bond->kill_timers) |
2451 | goto out; | |
2452 | ||
2453 | if (bond->slave_cnt == 0) | |
2454 | goto re_arm; | |
b59f9f74 JV |
2455 | |
2456 | if (bond->send_grat_arp) { | |
2457 | read_lock(&bond->curr_slave_lock); | |
2458 | bond_send_gratuitous_arp(bond); | |
2459 | read_unlock(&bond->curr_slave_lock); | |
2460 | } | |
2461 | ||
305d552a BH |
2462 | if (bond->send_unsol_na) { |
2463 | read_lock(&bond->curr_slave_lock); | |
2464 | bond_send_unsolicited_na(bond); | |
2465 | read_unlock(&bond->curr_slave_lock); | |
2466 | } | |
2467 | ||
f0c76d61 | 2468 | if (bond_miimon_inspect(bond)) { |
0b0eef66 JV |
2469 | read_unlock(&bond->lock); |
2470 | rtnl_lock(); | |
2471 | read_lock(&bond->lock); | |
f0c76d61 JV |
2472 | |
2473 | bond_miimon_commit(bond); | |
2474 | ||
5655662d JV |
2475 | read_unlock(&bond->lock); |
2476 | rtnl_unlock(); /* might sleep, hold no other locks */ | |
2477 | read_lock(&bond->lock); | |
0b0eef66 JV |
2478 | } |
2479 | ||
f0c76d61 JV |
2480 | re_arm: |
2481 | if (bond->params.miimon) | |
2482 | queue_delayed_work(bond->wq, &bond->mii_work, | |
2483 | msecs_to_jiffies(bond->params.miimon)); | |
2484 | out: | |
0b0eef66 | 2485 | read_unlock(&bond->lock); |
0b0eef66 | 2486 | } |
c3ade5ca | 2487 | |
d3bb52b0 | 2488 | static __be32 bond_glean_dev_ip(struct net_device *dev) |
c3ade5ca JV |
2489 | { |
2490 | struct in_device *idev; | |
2491 | struct in_ifaddr *ifa; | |
a144ea4b | 2492 | __be32 addr = 0; |
c3ade5ca JV |
2493 | |
2494 | if (!dev) | |
2495 | return 0; | |
2496 | ||
2497 | rcu_read_lock(); | |
e5ed6399 | 2498 | idev = __in_dev_get_rcu(dev); |
c3ade5ca JV |
2499 | if (!idev) |
2500 | goto out; | |
2501 | ||
2502 | ifa = idev->ifa_list; | |
2503 | if (!ifa) | |
2504 | goto out; | |
2505 | ||
2506 | addr = ifa->ifa_local; | |
2507 | out: | |
2508 | rcu_read_unlock(); | |
2509 | return addr; | |
2510 | } | |
2511 | ||
d3bb52b0 | 2512 | static int bond_has_this_ip(struct bonding *bond, __be32 ip) |
f5b2b966 | 2513 | { |
0883beca | 2514 | struct vlan_entry *vlan; |
f5b2b966 JV |
2515 | |
2516 | if (ip == bond->master_ip) | |
2517 | return 1; | |
2518 | ||
0883beca | 2519 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
f5b2b966 JV |
2520 | if (ip == vlan->vlan_ip) |
2521 | return 1; | |
2522 | } | |
2523 | ||
2524 | return 0; | |
2525 | } | |
2526 | ||
c3ade5ca JV |
2527 | /* |
2528 | * We go to the (large) trouble of VLAN tagging ARP frames because | |
2529 | * switches in VLAN mode (especially if ports are configured as | |
2530 | * "native" to a VLAN) might not pass non-tagged frames. | |
2531 | */ | |
d3bb52b0 | 2532 | static void bond_arp_send(struct net_device *slave_dev, int arp_op, __be32 dest_ip, __be32 src_ip, unsigned short vlan_id) |
c3ade5ca JV |
2533 | { |
2534 | struct sk_buff *skb; | |
2535 | ||
5a03cdb7 | 2536 | pr_debug("arp %d on slave %s: dst %x src %x vid %d\n", arp_op, |
c3ade5ca | 2537 | slave_dev->name, dest_ip, src_ip, vlan_id); |
3d632c3f | 2538 | |
c3ade5ca JV |
2539 | skb = arp_create(arp_op, ETH_P_ARP, dest_ip, slave_dev, src_ip, |
2540 | NULL, slave_dev->dev_addr, NULL); | |
2541 | ||
2542 | if (!skb) { | |
3d632c3f | 2543 | pr_err(DRV_NAME ": ARP packet allocation failed\n"); |
c3ade5ca JV |
2544 | return; |
2545 | } | |
2546 | if (vlan_id) { | |
2547 | skb = vlan_put_tag(skb, vlan_id); | |
2548 | if (!skb) { | |
3d632c3f | 2549 | pr_err(DRV_NAME ": failed to insert VLAN tag\n"); |
c3ade5ca JV |
2550 | return; |
2551 | } | |
2552 | } | |
2553 | arp_xmit(skb); | |
2554 | } | |
2555 | ||
2556 | ||
1da177e4 LT |
2557 | static void bond_arp_send_all(struct bonding *bond, struct slave *slave) |
2558 | { | |
c3ade5ca | 2559 | int i, vlan_id, rv; |
d3bb52b0 | 2560 | __be32 *targets = bond->params.arp_targets; |
0883beca | 2561 | struct vlan_entry *vlan; |
c3ade5ca JV |
2562 | struct net_device *vlan_dev; |
2563 | struct flowi fl; | |
2564 | struct rtable *rt; | |
1da177e4 | 2565 | |
6b780567 MW |
2566 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
2567 | if (!targets[i]) | |
5a31bec0 | 2568 | break; |
5a03cdb7 | 2569 | pr_debug("basa: target %x\n", targets[i]); |
c3ade5ca | 2570 | if (list_empty(&bond->vlan_list)) { |
5a03cdb7 | 2571 | pr_debug("basa: empty vlan: arp_send\n"); |
c3ade5ca JV |
2572 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2573 | bond->master_ip, 0); | |
2574 | continue; | |
2575 | } | |
2576 | ||
2577 | /* | |
2578 | * If VLANs are configured, we do a route lookup to | |
2579 | * determine which VLAN interface would be used, so we | |
2580 | * can tag the ARP with the proper VLAN tag. | |
2581 | */ | |
2582 | memset(&fl, 0, sizeof(fl)); | |
2583 | fl.fl4_dst = targets[i]; | |
2584 | fl.fl4_tos = RTO_ONLINK; | |
2585 | ||
ec87fd3b | 2586 | rv = ip_route_output_key(dev_net(bond->dev), &rt, &fl); |
c3ade5ca JV |
2587 | if (rv) { |
2588 | if (net_ratelimit()) { | |
3d632c3f | 2589 | pr_warning(DRV_NAME |
63779436 HH |
2590 | ": %s: no route to arp_ip_target %pI4\n", |
2591 | bond->dev->name, &fl.fl4_dst); | |
c3ade5ca JV |
2592 | } |
2593 | continue; | |
2594 | } | |
2595 | ||
2596 | /* | |
2597 | * This target is not on a VLAN | |
2598 | */ | |
2599 | if (rt->u.dst.dev == bond->dev) { | |
ed4b9f80 | 2600 | ip_rt_put(rt); |
5a03cdb7 | 2601 | pr_debug("basa: rtdev == bond->dev: arp_send\n"); |
c3ade5ca JV |
2602 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2603 | bond->master_ip, 0); | |
2604 | continue; | |
2605 | } | |
2606 | ||
2607 | vlan_id = 0; | |
0883beca | 2608 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
5c15bdec | 2609 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
2610 | if (vlan_dev == rt->u.dst.dev) { |
2611 | vlan_id = vlan->vlan_id; | |
5a03cdb7 | 2612 | pr_debug("basa: vlan match on %s %d\n", |
c3ade5ca JV |
2613 | vlan_dev->name, vlan_id); |
2614 | break; | |
2615 | } | |
2616 | } | |
2617 | ||
2618 | if (vlan_id) { | |
ed4b9f80 | 2619 | ip_rt_put(rt); |
c3ade5ca JV |
2620 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2621 | vlan->vlan_ip, vlan_id); | |
2622 | continue; | |
2623 | } | |
2624 | ||
2625 | if (net_ratelimit()) { | |
3d632c3f | 2626 | pr_warning(DRV_NAME |
63779436 HH |
2627 | ": %s: no path to arp_ip_target %pI4 via rt.dev %s\n", |
2628 | bond->dev->name, &fl.fl4_dst, | |
c3ade5ca JV |
2629 | rt->u.dst.dev ? rt->u.dst.dev->name : "NULL"); |
2630 | } | |
ed4b9f80 | 2631 | ip_rt_put(rt); |
c3ade5ca JV |
2632 | } |
2633 | } | |
2634 | ||
2635 | /* | |
2636 | * Kick out a gratuitous ARP for an IP on the bonding master plus one | |
2637 | * for each VLAN above us. | |
b59f9f74 JV |
2638 | * |
2639 | * Caller must hold curr_slave_lock for read or better | |
c3ade5ca JV |
2640 | */ |
2641 | static void bond_send_gratuitous_arp(struct bonding *bond) | |
2642 | { | |
2643 | struct slave *slave = bond->curr_active_slave; | |
2644 | struct vlan_entry *vlan; | |
2645 | struct net_device *vlan_dev; | |
2646 | ||
5a03cdb7 | 2647 | pr_debug("bond_send_grat_arp: bond %s slave %s\n", bond->dev->name, |
c3ade5ca | 2648 | slave ? slave->dev->name : "NULL"); |
b59f9f74 JV |
2649 | |
2650 | if (!slave || !bond->send_grat_arp || | |
2651 | test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state)) | |
c3ade5ca JV |
2652 | return; |
2653 | ||
b59f9f74 JV |
2654 | bond->send_grat_arp--; |
2655 | ||
c3ade5ca JV |
2656 | if (bond->master_ip) { |
2657 | bond_arp_send(slave->dev, ARPOP_REPLY, bond->master_ip, | |
1053f62c | 2658 | bond->master_ip, 0); |
c3ade5ca JV |
2659 | } |
2660 | ||
2661 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { | |
5c15bdec | 2662 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
2663 | if (vlan->vlan_ip) { |
2664 | bond_arp_send(slave->dev, ARPOP_REPLY, vlan->vlan_ip, | |
2665 | vlan->vlan_ip, vlan->vlan_id); | |
2666 | } | |
1da177e4 LT |
2667 | } |
2668 | } | |
2669 | ||
d3bb52b0 | 2670 | static void bond_validate_arp(struct bonding *bond, struct slave *slave, __be32 sip, __be32 tip) |
f5b2b966 JV |
2671 | { |
2672 | int i; | |
d3bb52b0 | 2673 | __be32 *targets = bond->params.arp_targets; |
f5b2b966 | 2674 | |
f5b2b966 | 2675 | for (i = 0; (i < BOND_MAX_ARP_TARGETS) && targets[i]; i++) { |
5a03cdb7 | 2676 | pr_debug("bva: sip %pI4 tip %pI4 t[%d] %pI4 bhti(tip) %d\n", |
63779436 | 2677 | &sip, &tip, i, &targets[i], bond_has_this_ip(bond, tip)); |
f5b2b966 JV |
2678 | if (sip == targets[i]) { |
2679 | if (bond_has_this_ip(bond, tip)) | |
2680 | slave->last_arp_rx = jiffies; | |
2681 | return; | |
2682 | } | |
2683 | } | |
2684 | } | |
2685 | ||
2686 | static int bond_arp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev) | |
2687 | { | |
2688 | struct arphdr *arp; | |
2689 | struct slave *slave; | |
2690 | struct bonding *bond; | |
2691 | unsigned char *arp_ptr; | |
d3bb52b0 | 2692 | __be32 sip, tip; |
f5b2b966 JV |
2693 | |
2694 | if (!(dev->priv_flags & IFF_BONDING) || !(dev->flags & IFF_MASTER)) | |
2695 | goto out; | |
2696 | ||
454d7c9b | 2697 | bond = netdev_priv(dev); |
f5b2b966 JV |
2698 | read_lock(&bond->lock); |
2699 | ||
5a03cdb7 | 2700 | pr_debug("bond_arp_rcv: bond %s skb->dev %s orig_dev %s\n", |
f5b2b966 JV |
2701 | bond->dev->name, skb->dev ? skb->dev->name : "NULL", |
2702 | orig_dev ? orig_dev->name : "NULL"); | |
2703 | ||
2704 | slave = bond_get_slave_by_dev(bond, orig_dev); | |
2705 | if (!slave || !slave_do_arp_validate(bond, slave)) | |
2706 | goto out_unlock; | |
2707 | ||
988b7050 | 2708 | if (!pskb_may_pull(skb, arp_hdr_len(dev))) |
f5b2b966 JV |
2709 | goto out_unlock; |
2710 | ||
d0a92be0 | 2711 | arp = arp_hdr(skb); |
f5b2b966 JV |
2712 | if (arp->ar_hln != dev->addr_len || |
2713 | skb->pkt_type == PACKET_OTHERHOST || | |
2714 | skb->pkt_type == PACKET_LOOPBACK || | |
2715 | arp->ar_hrd != htons(ARPHRD_ETHER) || | |
2716 | arp->ar_pro != htons(ETH_P_IP) || | |
2717 | arp->ar_pln != 4) | |
2718 | goto out_unlock; | |
2719 | ||
2720 | arp_ptr = (unsigned char *)(arp + 1); | |
2721 | arp_ptr += dev->addr_len; | |
2722 | memcpy(&sip, arp_ptr, 4); | |
2723 | arp_ptr += 4 + dev->addr_len; | |
2724 | memcpy(&tip, arp_ptr, 4); | |
2725 | ||
5a03cdb7 | 2726 | pr_debug("bond_arp_rcv: %s %s/%d av %d sv %d sip %pI4 tip %pI4\n", |
63779436 HH |
2727 | bond->dev->name, slave->dev->name, slave->state, |
2728 | bond->params.arp_validate, slave_do_arp_validate(bond, slave), | |
2729 | &sip, &tip); | |
f5b2b966 JV |
2730 | |
2731 | /* | |
2732 | * Backup slaves won't see the ARP reply, but do come through | |
2733 | * here for each ARP probe (so we swap the sip/tip to validate | |
2734 | * the probe). In a "redundant switch, common router" type of | |
2735 | * configuration, the ARP probe will (hopefully) travel from | |
2736 | * the active, through one switch, the router, then the other | |
2737 | * switch before reaching the backup. | |
2738 | */ | |
2739 | if (slave->state == BOND_STATE_ACTIVE) | |
2740 | bond_validate_arp(bond, slave, sip, tip); | |
2741 | else | |
2742 | bond_validate_arp(bond, slave, tip, sip); | |
2743 | ||
2744 | out_unlock: | |
2745 | read_unlock(&bond->lock); | |
2746 | out: | |
2747 | dev_kfree_skb(skb); | |
2748 | return NET_RX_SUCCESS; | |
2749 | } | |
2750 | ||
1da177e4 LT |
2751 | /* |
2752 | * this function is called regularly to monitor each slave's link | |
2753 | * ensuring that traffic is being sent and received when arp monitoring | |
2754 | * is used in load-balancing mode. if the adapter has been dormant, then an | |
2755 | * arp is transmitted to generate traffic. see activebackup_arp_monitor for | |
2756 | * arp monitoring in active backup mode. | |
2757 | */ | |
1b76b316 | 2758 | void bond_loadbalance_arp_mon(struct work_struct *work) |
1da177e4 | 2759 | { |
1b76b316 JV |
2760 | struct bonding *bond = container_of(work, struct bonding, |
2761 | arp_work.work); | |
1da177e4 LT |
2762 | struct slave *slave, *oldcurrent; |
2763 | int do_failover = 0; | |
2764 | int delta_in_ticks; | |
2765 | int i; | |
2766 | ||
2767 | read_lock(&bond->lock); | |
2768 | ||
5ce0da8f | 2769 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
1da177e4 | 2770 | |
3d632c3f | 2771 | if (bond->kill_timers) |
1da177e4 | 2772 | goto out; |
1da177e4 | 2773 | |
3d632c3f | 2774 | if (bond->slave_cnt == 0) |
1da177e4 | 2775 | goto re_arm; |
1da177e4 LT |
2776 | |
2777 | read_lock(&bond->curr_slave_lock); | |
2778 | oldcurrent = bond->curr_active_slave; | |
2779 | read_unlock(&bond->curr_slave_lock); | |
2780 | ||
2781 | /* see if any of the previous devices are up now (i.e. they have | |
2782 | * xmt and rcv traffic). the curr_active_slave does not come into | |
2783 | * the picture unless it is null. also, slave->jiffies is not needed | |
2784 | * here because we send an arp on each slave and give a slave as | |
2785 | * long as it needs to get the tx/rx within the delta. | |
2786 | * TODO: what about up/down delay in arp mode? it wasn't here before | |
2787 | * so it can wait | |
2788 | */ | |
2789 | bond_for_each_slave(bond, slave, i) { | |
2790 | if (slave->link != BOND_LINK_UP) { | |
9d21493b | 2791 | if (time_before_eq(jiffies, dev_trans_start(slave->dev) + delta_in_ticks) && |
b63bb739 | 2792 | time_before_eq(jiffies, slave->dev->last_rx + delta_in_ticks)) { |
1da177e4 LT |
2793 | |
2794 | slave->link = BOND_LINK_UP; | |
2795 | slave->state = BOND_STATE_ACTIVE; | |
2796 | ||
2797 | /* primary_slave has no meaning in round-robin | |
2798 | * mode. the window of a slave being up and | |
2799 | * curr_active_slave being null after enslaving | |
2800 | * is closed. | |
2801 | */ | |
2802 | if (!oldcurrent) { | |
3d632c3f | 2803 | pr_info(DRV_NAME |
1da177e4 LT |
2804 | ": %s: link status definitely " |
2805 | "up for interface %s, ", | |
1b76b316 | 2806 | bond->dev->name, |
1da177e4 LT |
2807 | slave->dev->name); |
2808 | do_failover = 1; | |
2809 | } else { | |
3d632c3f | 2810 | pr_info(DRV_NAME |
1da177e4 | 2811 | ": %s: interface %s is now up\n", |
1b76b316 | 2812 | bond->dev->name, |
1da177e4 LT |
2813 | slave->dev->name); |
2814 | } | |
2815 | } | |
2816 | } else { | |
2817 | /* slave->link == BOND_LINK_UP */ | |
2818 | ||
2819 | /* not all switches will respond to an arp request | |
2820 | * when the source ip is 0, so don't take the link down | |
2821 | * if we don't know our ip yet | |
2822 | */ | |
9d21493b | 2823 | if (time_after_eq(jiffies, dev_trans_start(slave->dev) + 2*delta_in_ticks) || |
4b8a9239 | 2824 | (time_after_eq(jiffies, slave->dev->last_rx + 2*delta_in_ticks))) { |
1da177e4 LT |
2825 | |
2826 | slave->link = BOND_LINK_DOWN; | |
2827 | slave->state = BOND_STATE_BACKUP; | |
2828 | ||
3d632c3f | 2829 | if (slave->link_failure_count < UINT_MAX) |
1da177e4 | 2830 | slave->link_failure_count++; |
1da177e4 | 2831 | |
3d632c3f | 2832 | pr_info(DRV_NAME |
1da177e4 | 2833 | ": %s: interface %s is now down.\n", |
1b76b316 | 2834 | bond->dev->name, |
1da177e4 LT |
2835 | slave->dev->name); |
2836 | ||
3d632c3f | 2837 | if (slave == oldcurrent) |
1da177e4 | 2838 | do_failover = 1; |
1da177e4 LT |
2839 | } |
2840 | } | |
2841 | ||
2842 | /* note: if switch is in round-robin mode, all links | |
2843 | * must tx arp to ensure all links rx an arp - otherwise | |
2844 | * links may oscillate or not come up at all; if switch is | |
2845 | * in something like xor mode, there is nothing we can | |
2846 | * do - all replies will be rx'ed on same link causing slaves | |
2847 | * to be unstable during low/no traffic periods | |
2848 | */ | |
3d632c3f | 2849 | if (IS_UP(slave->dev)) |
1da177e4 | 2850 | bond_arp_send_all(bond, slave); |
1da177e4 LT |
2851 | } |
2852 | ||
2853 | if (do_failover) { | |
059fe7a5 | 2854 | write_lock_bh(&bond->curr_slave_lock); |
1da177e4 LT |
2855 | |
2856 | bond_select_active_slave(bond); | |
2857 | ||
059fe7a5 | 2858 | write_unlock_bh(&bond->curr_slave_lock); |
1da177e4 LT |
2859 | } |
2860 | ||
2861 | re_arm: | |
1b76b316 JV |
2862 | if (bond->params.arp_interval) |
2863 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); | |
1da177e4 LT |
2864 | out: |
2865 | read_unlock(&bond->lock); | |
2866 | } | |
2867 | ||
2868 | /* | |
b2220cad JV |
2869 | * Called to inspect slaves for active-backup mode ARP monitor link state |
2870 | * changes. Sets new_link in slaves to specify what action should take | |
2871 | * place for the slave. Returns 0 if no changes are found, >0 if changes | |
2872 | * to link states must be committed. | |
2873 | * | |
2874 | * Called with bond->lock held for read. | |
1da177e4 | 2875 | */ |
b2220cad | 2876 | static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks) |
1da177e4 | 2877 | { |
1da177e4 | 2878 | struct slave *slave; |
b2220cad | 2879 | int i, commit = 0; |
1da177e4 | 2880 | |
b2220cad JV |
2881 | bond_for_each_slave(bond, slave, i) { |
2882 | slave->new_link = BOND_LINK_NOCHANGE; | |
1da177e4 | 2883 | |
b2220cad JV |
2884 | if (slave->link != BOND_LINK_UP) { |
2885 | if (time_before_eq(jiffies, slave_last_rx(bond, slave) + | |
2886 | delta_in_ticks)) { | |
2887 | slave->new_link = BOND_LINK_UP; | |
2888 | commit++; | |
2889 | } | |
1da177e4 | 2890 | |
b2220cad JV |
2891 | continue; |
2892 | } | |
1da177e4 | 2893 | |
b2220cad JV |
2894 | /* |
2895 | * Give slaves 2*delta after being enslaved or made | |
2896 | * active. This avoids bouncing, as the last receive | |
2897 | * times need a full ARP monitor cycle to be updated. | |
2898 | */ | |
2899 | if (!time_after_eq(jiffies, slave->jiffies + | |
2900 | 2 * delta_in_ticks)) | |
2901 | continue; | |
2902 | ||
2903 | /* | |
2904 | * Backup slave is down if: | |
2905 | * - No current_arp_slave AND | |
2906 | * - more than 3*delta since last receive AND | |
2907 | * - the bond has an IP address | |
2908 | * | |
2909 | * Note: a non-null current_arp_slave indicates | |
2910 | * the curr_active_slave went down and we are | |
2911 | * searching for a new one; under this condition | |
2912 | * we only take the curr_active_slave down - this | |
2913 | * gives each slave a chance to tx/rx traffic | |
2914 | * before being taken out | |
2915 | */ | |
2916 | if (slave->state == BOND_STATE_BACKUP && | |
2917 | !bond->current_arp_slave && | |
2918 | time_after(jiffies, slave_last_rx(bond, slave) + | |
2919 | 3 * delta_in_ticks)) { | |
2920 | slave->new_link = BOND_LINK_DOWN; | |
2921 | commit++; | |
2922 | } | |
2923 | ||
2924 | /* | |
2925 | * Active slave is down if: | |
2926 | * - more than 2*delta since transmitting OR | |
2927 | * - (more than 2*delta since receive AND | |
2928 | * the bond has an IP address) | |
2929 | */ | |
2930 | if ((slave->state == BOND_STATE_ACTIVE) && | |
9d21493b | 2931 | (time_after_eq(jiffies, dev_trans_start(slave->dev) + |
b2220cad JV |
2932 | 2 * delta_in_ticks) || |
2933 | (time_after_eq(jiffies, slave_last_rx(bond, slave) | |
2934 | + 2 * delta_in_ticks)))) { | |
2935 | slave->new_link = BOND_LINK_DOWN; | |
2936 | commit++; | |
2937 | } | |
1da177e4 LT |
2938 | } |
2939 | ||
b2220cad JV |
2940 | return commit; |
2941 | } | |
1da177e4 | 2942 | |
b2220cad JV |
2943 | /* |
2944 | * Called to commit link state changes noted by inspection step of | |
2945 | * active-backup mode ARP monitor. | |
2946 | * | |
2947 | * Called with RTNL and bond->lock for read. | |
2948 | */ | |
2949 | static void bond_ab_arp_commit(struct bonding *bond, int delta_in_ticks) | |
2950 | { | |
2951 | struct slave *slave; | |
2952 | int i; | |
1da177e4 | 2953 | |
b2220cad JV |
2954 | bond_for_each_slave(bond, slave, i) { |
2955 | switch (slave->new_link) { | |
2956 | case BOND_LINK_NOCHANGE: | |
2957 | continue; | |
ff59c456 | 2958 | |
b2220cad | 2959 | case BOND_LINK_UP: |
b9f60253 JP |
2960 | if ((!bond->curr_active_slave && |
2961 | time_before_eq(jiffies, | |
2962 | dev_trans_start(slave->dev) + | |
2963 | delta_in_ticks)) || | |
2964 | bond->curr_active_slave != slave) { | |
b2220cad | 2965 | slave->link = BOND_LINK_UP; |
b2220cad JV |
2966 | bond->current_arp_slave = NULL; |
2967 | ||
3d632c3f | 2968 | pr_info(DRV_NAME |
b9f60253 JP |
2969 | ": %s: link status definitely " |
2970 | "up for interface %s.\n", | |
2971 | bond->dev->name, slave->dev->name); | |
b2220cad | 2972 | |
b9f60253 JP |
2973 | if (!bond->curr_active_slave || |
2974 | (slave == bond->primary_slave)) | |
2975 | goto do_failover; | |
1da177e4 | 2976 | |
b9f60253 | 2977 | } |
1da177e4 | 2978 | |
b9f60253 | 2979 | continue; |
1da177e4 | 2980 | |
b2220cad JV |
2981 | case BOND_LINK_DOWN: |
2982 | if (slave->link_failure_count < UINT_MAX) | |
2983 | slave->link_failure_count++; | |
2984 | ||
2985 | slave->link = BOND_LINK_DOWN; | |
b9f60253 | 2986 | bond_set_slave_inactive_flags(slave); |
b2220cad | 2987 | |
b9f60253 JP |
2988 | pr_info(DRV_NAME |
2989 | ": %s: link status definitely down for " | |
2990 | "interface %s, disabling it\n", | |
2991 | bond->dev->name, slave->dev->name); | |
b2220cad | 2992 | |
b9f60253 | 2993 | if (slave == bond->curr_active_slave) { |
b2220cad | 2994 | bond->current_arp_slave = NULL; |
b9f60253 | 2995 | goto do_failover; |
1da177e4 | 2996 | } |
b9f60253 JP |
2997 | |
2998 | continue; | |
b2220cad JV |
2999 | |
3000 | default: | |
3d632c3f | 3001 | pr_err(DRV_NAME |
b2220cad JV |
3002 | ": %s: impossible: new_link %d on slave %s\n", |
3003 | bond->dev->name, slave->new_link, | |
3004 | slave->dev->name); | |
b9f60253 | 3005 | continue; |
1da177e4 | 3006 | } |
1da177e4 | 3007 | |
b9f60253 JP |
3008 | do_failover: |
3009 | ASSERT_RTNL(); | |
b2220cad | 3010 | write_lock_bh(&bond->curr_slave_lock); |
b9f60253 | 3011 | bond_select_active_slave(bond); |
b2220cad JV |
3012 | write_unlock_bh(&bond->curr_slave_lock); |
3013 | } | |
1da177e4 | 3014 | |
b2220cad JV |
3015 | bond_set_carrier(bond); |
3016 | } | |
1da177e4 | 3017 | |
b2220cad JV |
3018 | /* |
3019 | * Send ARP probes for active-backup mode ARP monitor. | |
3020 | * | |
3021 | * Called with bond->lock held for read. | |
3022 | */ | |
3023 | static void bond_ab_arp_probe(struct bonding *bond) | |
3024 | { | |
3025 | struct slave *slave; | |
3026 | int i; | |
1da177e4 | 3027 | |
b2220cad | 3028 | read_lock(&bond->curr_slave_lock); |
1da177e4 | 3029 | |
b2220cad | 3030 | if (bond->current_arp_slave && bond->curr_active_slave) |
3d632c3f | 3031 | pr_info(DRV_NAME "PROBE: c_arp %s && cas %s BAD\n", |
b2220cad JV |
3032 | bond->current_arp_slave->dev->name, |
3033 | bond->curr_active_slave->dev->name); | |
1da177e4 | 3034 | |
b2220cad JV |
3035 | if (bond->curr_active_slave) { |
3036 | bond_arp_send_all(bond, bond->curr_active_slave); | |
3037 | read_unlock(&bond->curr_slave_lock); | |
3038 | return; | |
3039 | } | |
1da177e4 | 3040 | |
b2220cad | 3041 | read_unlock(&bond->curr_slave_lock); |
059fe7a5 | 3042 | |
b2220cad JV |
3043 | /* if we don't have a curr_active_slave, search for the next available |
3044 | * backup slave from the current_arp_slave and make it the candidate | |
3045 | * for becoming the curr_active_slave | |
3046 | */ | |
1da177e4 | 3047 | |
b2220cad JV |
3048 | if (!bond->current_arp_slave) { |
3049 | bond->current_arp_slave = bond->first_slave; | |
3050 | if (!bond->current_arp_slave) | |
3051 | return; | |
3052 | } | |
1da177e4 | 3053 | |
b2220cad | 3054 | bond_set_slave_inactive_flags(bond->current_arp_slave); |
059fe7a5 | 3055 | |
b2220cad JV |
3056 | /* search for next candidate */ |
3057 | bond_for_each_slave_from(bond, slave, i, bond->current_arp_slave->next) { | |
3058 | if (IS_UP(slave->dev)) { | |
3059 | slave->link = BOND_LINK_BACK; | |
3060 | bond_set_slave_active_flags(slave); | |
3061 | bond_arp_send_all(bond, slave); | |
1da177e4 | 3062 | slave->jiffies = jiffies; |
b2220cad JV |
3063 | bond->current_arp_slave = slave; |
3064 | break; | |
1da177e4 LT |
3065 | } |
3066 | ||
b2220cad JV |
3067 | /* if the link state is up at this point, we |
3068 | * mark it down - this can happen if we have | |
3069 | * simultaneous link failures and | |
3070 | * reselect_active_interface doesn't make this | |
3071 | * one the current slave so it is still marked | |
3072 | * up when it is actually down | |
1da177e4 | 3073 | */ |
b2220cad JV |
3074 | if (slave->link == BOND_LINK_UP) { |
3075 | slave->link = BOND_LINK_DOWN; | |
3076 | if (slave->link_failure_count < UINT_MAX) | |
3077 | slave->link_failure_count++; | |
1da177e4 | 3078 | |
b2220cad JV |
3079 | bond_set_slave_inactive_flags(slave); |
3080 | ||
3d632c3f | 3081 | pr_info(DRV_NAME |
b2220cad JV |
3082 | ": %s: backup interface %s is now down.\n", |
3083 | bond->dev->name, slave->dev->name); | |
1da177e4 | 3084 | } |
b2220cad JV |
3085 | } |
3086 | } | |
1da177e4 | 3087 | |
b2220cad JV |
3088 | void bond_activebackup_arp_mon(struct work_struct *work) |
3089 | { | |
3090 | struct bonding *bond = container_of(work, struct bonding, | |
3091 | arp_work.work); | |
3092 | int delta_in_ticks; | |
1da177e4 | 3093 | |
b2220cad | 3094 | read_lock(&bond->lock); |
1da177e4 | 3095 | |
b2220cad JV |
3096 | if (bond->kill_timers) |
3097 | goto out; | |
1da177e4 | 3098 | |
b2220cad | 3099 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
1da177e4 | 3100 | |
b2220cad JV |
3101 | if (bond->slave_cnt == 0) |
3102 | goto re_arm; | |
3103 | ||
b59f9f74 JV |
3104 | if (bond->send_grat_arp) { |
3105 | read_lock(&bond->curr_slave_lock); | |
3106 | bond_send_gratuitous_arp(bond); | |
3107 | read_unlock(&bond->curr_slave_lock); | |
3108 | } | |
3109 | ||
305d552a BH |
3110 | if (bond->send_unsol_na) { |
3111 | read_lock(&bond->curr_slave_lock); | |
3112 | bond_send_unsolicited_na(bond); | |
3113 | read_unlock(&bond->curr_slave_lock); | |
3114 | } | |
3115 | ||
b2220cad JV |
3116 | if (bond_ab_arp_inspect(bond, delta_in_ticks)) { |
3117 | read_unlock(&bond->lock); | |
3118 | rtnl_lock(); | |
3119 | read_lock(&bond->lock); | |
3120 | ||
3121 | bond_ab_arp_commit(bond, delta_in_ticks); | |
3122 | ||
3123 | read_unlock(&bond->lock); | |
3124 | rtnl_unlock(); | |
3125 | read_lock(&bond->lock); | |
1da177e4 LT |
3126 | } |
3127 | ||
b2220cad JV |
3128 | bond_ab_arp_probe(bond); |
3129 | ||
1da177e4 | 3130 | re_arm: |
3d632c3f | 3131 | if (bond->params.arp_interval) |
1b76b316 | 3132 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); |
1da177e4 LT |
3133 | out: |
3134 | read_unlock(&bond->lock); | |
3135 | } | |
3136 | ||
3137 | /*------------------------------ proc/seq_file-------------------------------*/ | |
3138 | ||
3139 | #ifdef CONFIG_PROC_FS | |
3140 | ||
1da177e4 | 3141 | static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos) |
1f78d9f9 HE |
3142 | __acquires(&dev_base_lock) |
3143 | __acquires(&bond->lock) | |
1da177e4 LT |
3144 | { |
3145 | struct bonding *bond = seq->private; | |
3146 | loff_t off = 0; | |
3147 | struct slave *slave; | |
3148 | int i; | |
3149 | ||
3150 | /* make sure the bond won't be taken away */ | |
3151 | read_lock(&dev_base_lock); | |
6603a6f2 | 3152 | read_lock(&bond->lock); |
1da177e4 | 3153 | |
3d632c3f | 3154 | if (*pos == 0) |
1da177e4 | 3155 | return SEQ_START_TOKEN; |
1da177e4 LT |
3156 | |
3157 | bond_for_each_slave(bond, slave, i) { | |
3d632c3f | 3158 | if (++off == *pos) |
1da177e4 | 3159 | return slave; |
1da177e4 LT |
3160 | } |
3161 | ||
3162 | return NULL; | |
3163 | } | |
3164 | ||
3165 | static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
3166 | { | |
3167 | struct bonding *bond = seq->private; | |
3168 | struct slave *slave = v; | |
3169 | ||
3170 | ++*pos; | |
3d632c3f | 3171 | if (v == SEQ_START_TOKEN) |
1da177e4 | 3172 | return bond->first_slave; |
1da177e4 LT |
3173 | |
3174 | slave = slave->next; | |
3175 | ||
3176 | return (slave == bond->first_slave) ? NULL : slave; | |
3177 | } | |
3178 | ||
3179 | static void bond_info_seq_stop(struct seq_file *seq, void *v) | |
1f78d9f9 HE |
3180 | __releases(&bond->lock) |
3181 | __releases(&dev_base_lock) | |
1da177e4 LT |
3182 | { |
3183 | struct bonding *bond = seq->private; | |
3184 | ||
6603a6f2 | 3185 | read_unlock(&bond->lock); |
1da177e4 LT |
3186 | read_unlock(&dev_base_lock); |
3187 | } | |
3188 | ||
3189 | static void bond_info_show_master(struct seq_file *seq) | |
3190 | { | |
3191 | struct bonding *bond = seq->private; | |
3192 | struct slave *curr; | |
4756b02f | 3193 | int i; |
1da177e4 LT |
3194 | |
3195 | read_lock(&bond->curr_slave_lock); | |
3196 | curr = bond->curr_active_slave; | |
3197 | read_unlock(&bond->curr_slave_lock); | |
3198 | ||
dd957c57 | 3199 | seq_printf(seq, "Bonding Mode: %s", |
1da177e4 LT |
3200 | bond_mode_name(bond->params.mode)); |
3201 | ||
dd957c57 JV |
3202 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP && |
3203 | bond->params.fail_over_mac) | |
3915c1e8 JV |
3204 | seq_printf(seq, " (fail_over_mac %s)", |
3205 | fail_over_mac_tbl[bond->params.fail_over_mac].modename); | |
dd957c57 JV |
3206 | |
3207 | seq_printf(seq, "\n"); | |
3208 | ||
c61b75ad MW |
3209 | if (bond->params.mode == BOND_MODE_XOR || |
3210 | bond->params.mode == BOND_MODE_8023AD) { | |
3211 | seq_printf(seq, "Transmit Hash Policy: %s (%d)\n", | |
3212 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, | |
3213 | bond->params.xmit_policy); | |
3214 | } | |
3215 | ||
1da177e4 | 3216 | if (USES_PRIMARY(bond->params.mode)) { |
a549952a | 3217 | seq_printf(seq, "Primary Slave: %s", |
0f418b2a MW |
3218 | (bond->primary_slave) ? |
3219 | bond->primary_slave->dev->name : "None"); | |
a549952a JP |
3220 | if (bond->primary_slave) |
3221 | seq_printf(seq, " (primary_reselect %s)", | |
3222 | pri_reselect_tbl[bond->params.primary_reselect].modename); | |
1da177e4 | 3223 | |
a549952a | 3224 | seq_printf(seq, "\nCurrently Active Slave: %s\n", |
1da177e4 LT |
3225 | (curr) ? curr->dev->name : "None"); |
3226 | } | |
3227 | ||
ff59c456 JV |
3228 | seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ? |
3229 | "up" : "down"); | |
1da177e4 LT |
3230 | seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon); |
3231 | seq_printf(seq, "Up Delay (ms): %d\n", | |
3232 | bond->params.updelay * bond->params.miimon); | |
3233 | seq_printf(seq, "Down Delay (ms): %d\n", | |
3234 | bond->params.downdelay * bond->params.miimon); | |
3235 | ||
4756b02f MW |
3236 | |
3237 | /* ARP information */ | |
3d632c3f SH |
3238 | if (bond->params.arp_interval > 0) { |
3239 | int printed = 0; | |
4756b02f MW |
3240 | seq_printf(seq, "ARP Polling Interval (ms): %d\n", |
3241 | bond->params.arp_interval); | |
3242 | ||
3243 | seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); | |
3244 | ||
3d632c3f | 3245 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
4756b02f | 3246 | if (!bond->params.arp_targets[i]) |
5a31bec0 | 3247 | break; |
4756b02f MW |
3248 | if (printed) |
3249 | seq_printf(seq, ","); | |
8cf14e38 | 3250 | seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); |
4756b02f MW |
3251 | printed = 1; |
3252 | } | |
3253 | seq_printf(seq, "\n"); | |
3254 | } | |
3255 | ||
1da177e4 LT |
3256 | if (bond->params.mode == BOND_MODE_8023AD) { |
3257 | struct ad_info ad_info; | |
3258 | ||
3259 | seq_puts(seq, "\n802.3ad info\n"); | |
3260 | seq_printf(seq, "LACP rate: %s\n", | |
3261 | (bond->params.lacp_fast) ? "fast" : "slow"); | |
fd989c83 JV |
3262 | seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", |
3263 | ad_select_tbl[bond->params.ad_select].modename); | |
1da177e4 LT |
3264 | |
3265 | if (bond_3ad_get_active_agg_info(bond, &ad_info)) { | |
3266 | seq_printf(seq, "bond %s has no active aggregator\n", | |
3267 | bond->dev->name); | |
3268 | } else { | |
3269 | seq_printf(seq, "Active Aggregator Info:\n"); | |
3270 | ||
3271 | seq_printf(seq, "\tAggregator ID: %d\n", | |
3272 | ad_info.aggregator_id); | |
3273 | seq_printf(seq, "\tNumber of ports: %d\n", | |
3274 | ad_info.ports); | |
3275 | seq_printf(seq, "\tActor Key: %d\n", | |
3276 | ad_info.actor_key); | |
3277 | seq_printf(seq, "\tPartner Key: %d\n", | |
3278 | ad_info.partner_key); | |
e174961c JB |
3279 | seq_printf(seq, "\tPartner Mac Address: %pM\n", |
3280 | ad_info.partner_system); | |
1da177e4 LT |
3281 | } |
3282 | } | |
3283 | } | |
3284 | ||
3d632c3f SH |
3285 | static void bond_info_show_slave(struct seq_file *seq, |
3286 | const struct slave *slave) | |
1da177e4 LT |
3287 | { |
3288 | struct bonding *bond = seq->private; | |
3289 | ||
3290 | seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); | |
3291 | seq_printf(seq, "MII Status: %s\n", | |
3292 | (slave->link == BOND_LINK_UP) ? "up" : "down"); | |
65509645 | 3293 | seq_printf(seq, "Link Failure Count: %u\n", |
1da177e4 LT |
3294 | slave->link_failure_count); |
3295 | ||
e174961c | 3296 | seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr); |
1da177e4 LT |
3297 | |
3298 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3299 | const struct aggregator *agg | |
3300 | = SLAVE_AD_INFO(slave).port.aggregator; | |
3301 | ||
3d632c3f | 3302 | if (agg) |
1da177e4 LT |
3303 | seq_printf(seq, "Aggregator ID: %d\n", |
3304 | agg->aggregator_identifier); | |
3d632c3f | 3305 | else |
1da177e4 | 3306 | seq_puts(seq, "Aggregator ID: N/A\n"); |
1da177e4 LT |
3307 | } |
3308 | } | |
3309 | ||
3310 | static int bond_info_seq_show(struct seq_file *seq, void *v) | |
3311 | { | |
3312 | if (v == SEQ_START_TOKEN) { | |
3313 | seq_printf(seq, "%s\n", version); | |
3314 | bond_info_show_master(seq); | |
3d632c3f | 3315 | } else |
1da177e4 | 3316 | bond_info_show_slave(seq, v); |
1da177e4 LT |
3317 | |
3318 | return 0; | |
3319 | } | |
3320 | ||
4101dec9 | 3321 | static const struct seq_operations bond_info_seq_ops = { |
1da177e4 LT |
3322 | .start = bond_info_seq_start, |
3323 | .next = bond_info_seq_next, | |
3324 | .stop = bond_info_seq_stop, | |
3325 | .show = bond_info_seq_show, | |
3326 | }; | |
3327 | ||
3328 | static int bond_info_open(struct inode *inode, struct file *file) | |
3329 | { | |
3330 | struct seq_file *seq; | |
3331 | struct proc_dir_entry *proc; | |
3332 | int res; | |
3333 | ||
3334 | res = seq_open(file, &bond_info_seq_ops); | |
3335 | if (!res) { | |
3336 | /* recover the pointer buried in proc_dir_entry data */ | |
3337 | seq = file->private_data; | |
3338 | proc = PDE(inode); | |
3339 | seq->private = proc->data; | |
3340 | } | |
3341 | ||
3342 | return res; | |
3343 | } | |
3344 | ||
d54b1fdb | 3345 | static const struct file_operations bond_info_fops = { |
1da177e4 LT |
3346 | .owner = THIS_MODULE, |
3347 | .open = bond_info_open, | |
3348 | .read = seq_read, | |
3349 | .llseek = seq_lseek, | |
3350 | .release = seq_release, | |
3351 | }; | |
3352 | ||
38fc0026 | 3353 | static void bond_create_proc_entry(struct bonding *bond) |
1da177e4 LT |
3354 | { |
3355 | struct net_device *bond_dev = bond->dev; | |
ec87fd3b | 3356 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); |
1da177e4 | 3357 | |
ec87fd3b | 3358 | if (bn->proc_dir) { |
a95609cb | 3359 | bond->proc_entry = proc_create_data(bond_dev->name, |
ec87fd3b | 3360 | S_IRUGO, bn->proc_dir, |
a95609cb | 3361 | &bond_info_fops, bond); |
3d632c3f SH |
3362 | if (bond->proc_entry == NULL) |
3363 | pr_warning(DRV_NAME | |
1da177e4 LT |
3364 | ": Warning: Cannot create /proc/net/%s/%s\n", |
3365 | DRV_NAME, bond_dev->name); | |
3d632c3f | 3366 | else |
1da177e4 | 3367 | memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); |
1da177e4 | 3368 | } |
1da177e4 LT |
3369 | } |
3370 | ||
3371 | static void bond_remove_proc_entry(struct bonding *bond) | |
3372 | { | |
ec87fd3b EB |
3373 | struct net_device *bond_dev = bond->dev; |
3374 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); | |
3375 | ||
3376 | if (bn->proc_dir && bond->proc_entry) { | |
3377 | remove_proc_entry(bond->proc_file_name, bn->proc_dir); | |
1da177e4 LT |
3378 | memset(bond->proc_file_name, 0, IFNAMSIZ); |
3379 | bond->proc_entry = NULL; | |
3380 | } | |
3381 | } | |
3382 | ||
3383 | /* Create the bonding directory under /proc/net, if doesn't exist yet. | |
3384 | * Caller must hold rtnl_lock. | |
3385 | */ | |
ec87fd3b | 3386 | static void bond_create_proc_dir(struct bond_net *bn) |
1da177e4 | 3387 | { |
ec87fd3b EB |
3388 | if (!bn->proc_dir) { |
3389 | bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net); | |
3390 | if (!bn->proc_dir) | |
3d632c3f | 3391 | pr_warning(DRV_NAME |
1da177e4 LT |
3392 | ": Warning: cannot create /proc/net/%s\n", |
3393 | DRV_NAME); | |
1da177e4 LT |
3394 | } |
3395 | } | |
3396 | ||
3397 | /* Destroy the bonding directory under /proc/net, if empty. | |
3398 | * Caller must hold rtnl_lock. | |
3399 | */ | |
ec87fd3b | 3400 | static void bond_destroy_proc_dir(struct bond_net *bn) |
1da177e4 | 3401 | { |
ec87fd3b EB |
3402 | if (bn->proc_dir) { |
3403 | remove_proc_entry(DRV_NAME, bn->net->proc_net); | |
3404 | bn->proc_dir = NULL; | |
1da177e4 LT |
3405 | } |
3406 | } | |
aee64faf JP |
3407 | |
3408 | #else /* !CONFIG_PROC_FS */ | |
3409 | ||
38fc0026 | 3410 | static void bond_create_proc_entry(struct bonding *bond) |
aee64faf JP |
3411 | { |
3412 | } | |
3413 | ||
3414 | static void bond_remove_proc_entry(struct bonding *bond) | |
3415 | { | |
3416 | } | |
3417 | ||
ec87fd3b | 3418 | static void bond_create_proc_dir(struct bond_net *bn) |
aee64faf JP |
3419 | { |
3420 | } | |
3421 | ||
ec87fd3b | 3422 | static void bond_destroy_proc_dir(struct bond_net *bn) |
aee64faf JP |
3423 | { |
3424 | } | |
3425 | ||
1da177e4 LT |
3426 | #endif /* CONFIG_PROC_FS */ |
3427 | ||
aee64faf | 3428 | |
1da177e4 LT |
3429 | /*-------------------------- netdev event handling --------------------------*/ |
3430 | ||
3431 | /* | |
3432 | * Change device name | |
3433 | */ | |
3434 | static int bond_event_changename(struct bonding *bond) | |
3435 | { | |
1da177e4 LT |
3436 | bond_remove_proc_entry(bond); |
3437 | bond_create_proc_entry(bond); | |
7e083840 | 3438 | |
1da177e4 LT |
3439 | return NOTIFY_DONE; |
3440 | } | |
3441 | ||
3d632c3f SH |
3442 | static int bond_master_netdev_event(unsigned long event, |
3443 | struct net_device *bond_dev) | |
1da177e4 | 3444 | { |
454d7c9b | 3445 | struct bonding *event_bond = netdev_priv(bond_dev); |
1da177e4 LT |
3446 | |
3447 | switch (event) { | |
3448 | case NETDEV_CHANGENAME: | |
3449 | return bond_event_changename(event_bond); | |
1da177e4 LT |
3450 | default: |
3451 | break; | |
3452 | } | |
3453 | ||
3454 | return NOTIFY_DONE; | |
3455 | } | |
3456 | ||
3d632c3f SH |
3457 | static int bond_slave_netdev_event(unsigned long event, |
3458 | struct net_device *slave_dev) | |
1da177e4 LT |
3459 | { |
3460 | struct net_device *bond_dev = slave_dev->master; | |
454d7c9b | 3461 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3462 | |
3463 | switch (event) { | |
3464 | case NETDEV_UNREGISTER: | |
3465 | if (bond_dev) { | |
1284cd3a JV |
3466 | if (bond->setup_by_slave) |
3467 | bond_release_and_destroy(bond_dev, slave_dev); | |
3468 | else | |
3469 | bond_release(bond_dev, slave_dev); | |
1da177e4 LT |
3470 | } |
3471 | break; | |
3472 | case NETDEV_CHANGE: | |
17d04500 JV |
3473 | if (bond->params.mode == BOND_MODE_8023AD || bond_is_lb(bond)) { |
3474 | struct slave *slave; | |
3475 | ||
3476 | slave = bond_get_slave_by_dev(bond, slave_dev); | |
3477 | if (slave) { | |
3478 | u16 old_speed = slave->speed; | |
3479 | u16 old_duplex = slave->duplex; | |
3480 | ||
3481 | bond_update_speed_duplex(slave); | |
3482 | ||
3483 | if (bond_is_lb(bond)) | |
3484 | break; | |
3485 | ||
3486 | if (old_speed != slave->speed) | |
3487 | bond_3ad_adapter_speed_changed(slave); | |
3488 | if (old_duplex != slave->duplex) | |
3489 | bond_3ad_adapter_duplex_changed(slave); | |
3490 | } | |
3491 | } | |
3492 | ||
1da177e4 LT |
3493 | break; |
3494 | case NETDEV_DOWN: | |
3495 | /* | |
3496 | * ... Or is it this? | |
3497 | */ | |
3498 | break; | |
3499 | case NETDEV_CHANGEMTU: | |
3500 | /* | |
3501 | * TODO: Should slaves be allowed to | |
3502 | * independently alter their MTU? For | |
3503 | * an active-backup bond, slaves need | |
3504 | * not be the same type of device, so | |
3505 | * MTUs may vary. For other modes, | |
3506 | * slaves arguably should have the | |
3507 | * same MTUs. To do this, we'd need to | |
3508 | * take over the slave's change_mtu | |
3509 | * function for the duration of their | |
3510 | * servitude. | |
3511 | */ | |
3512 | break; | |
3513 | case NETDEV_CHANGENAME: | |
3514 | /* | |
3515 | * TODO: handle changing the primary's name | |
3516 | */ | |
3517 | break; | |
8531c5ff AK |
3518 | case NETDEV_FEAT_CHANGE: |
3519 | bond_compute_features(bond); | |
3520 | break; | |
1da177e4 LT |
3521 | default: |
3522 | break; | |
3523 | } | |
3524 | ||
3525 | return NOTIFY_DONE; | |
3526 | } | |
3527 | ||
3528 | /* | |
3529 | * bond_netdev_event: handle netdev notifier chain events. | |
3530 | * | |
3531 | * This function receives events for the netdev chain. The caller (an | |
e041c683 | 3532 | * ioctl handler calling blocking_notifier_call_chain) holds the necessary |
1da177e4 LT |
3533 | * locks for us to safely manipulate the slave devices (RTNL lock, |
3534 | * dev_probe_lock). | |
3535 | */ | |
3d632c3f SH |
3536 | static int bond_netdev_event(struct notifier_block *this, |
3537 | unsigned long event, void *ptr) | |
1da177e4 LT |
3538 | { |
3539 | struct net_device *event_dev = (struct net_device *)ptr; | |
3540 | ||
5a03cdb7 | 3541 | pr_debug("event_dev: %s, event: %lx\n", |
1da177e4 LT |
3542 | (event_dev ? event_dev->name : "None"), |
3543 | event); | |
3544 | ||
0b680e75 JV |
3545 | if (!(event_dev->priv_flags & IFF_BONDING)) |
3546 | return NOTIFY_DONE; | |
3547 | ||
1da177e4 | 3548 | if (event_dev->flags & IFF_MASTER) { |
5a03cdb7 | 3549 | pr_debug("IFF_MASTER\n"); |
1da177e4 LT |
3550 | return bond_master_netdev_event(event, event_dev); |
3551 | } | |
3552 | ||
3553 | if (event_dev->flags & IFF_SLAVE) { | |
5a03cdb7 | 3554 | pr_debug("IFF_SLAVE\n"); |
1da177e4 LT |
3555 | return bond_slave_netdev_event(event, event_dev); |
3556 | } | |
3557 | ||
3558 | return NOTIFY_DONE; | |
3559 | } | |
3560 | ||
c3ade5ca JV |
3561 | /* |
3562 | * bond_inetaddr_event: handle inetaddr notifier chain events. | |
3563 | * | |
3564 | * We keep track of device IPs primarily to use as source addresses in | |
3565 | * ARP monitor probes (rather than spewing out broadcasts all the time). | |
3566 | * | |
3567 | * We track one IP for the main device (if it has one), plus one per VLAN. | |
3568 | */ | |
3569 | static int bond_inetaddr_event(struct notifier_block *this, unsigned long event, void *ptr) | |
3570 | { | |
3571 | struct in_ifaddr *ifa = ptr; | |
3572 | struct net_device *vlan_dev, *event_dev = ifa->ifa_dev->dev; | |
ec87fd3b | 3573 | struct bond_net *bn = net_generic(dev_net(event_dev), bond_net_id); |
0883beca PE |
3574 | struct bonding *bond; |
3575 | struct vlan_entry *vlan; | |
c3ade5ca | 3576 | |
ec87fd3b | 3577 | list_for_each_entry(bond, &bn->dev_list, bond_list) { |
c3ade5ca JV |
3578 | if (bond->dev == event_dev) { |
3579 | switch (event) { | |
3580 | case NETDEV_UP: | |
3581 | bond->master_ip = ifa->ifa_local; | |
3582 | return NOTIFY_OK; | |
3583 | case NETDEV_DOWN: | |
3584 | bond->master_ip = bond_glean_dev_ip(bond->dev); | |
3585 | return NOTIFY_OK; | |
3586 | default: | |
3587 | return NOTIFY_DONE; | |
3588 | } | |
3589 | } | |
3590 | ||
0883beca | 3591 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
5c15bdec | 3592 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
3593 | if (vlan_dev == event_dev) { |
3594 | switch (event) { | |
3595 | case NETDEV_UP: | |
3596 | vlan->vlan_ip = ifa->ifa_local; | |
3597 | return NOTIFY_OK; | |
3598 | case NETDEV_DOWN: | |
3599 | vlan->vlan_ip = | |
3600 | bond_glean_dev_ip(vlan_dev); | |
3601 | return NOTIFY_OK; | |
3602 | default: | |
3603 | return NOTIFY_DONE; | |
3604 | } | |
3605 | } | |
3606 | } | |
3607 | } | |
3608 | return NOTIFY_DONE; | |
3609 | } | |
3610 | ||
1da177e4 LT |
3611 | static struct notifier_block bond_netdev_notifier = { |
3612 | .notifier_call = bond_netdev_event, | |
3613 | }; | |
3614 | ||
c3ade5ca JV |
3615 | static struct notifier_block bond_inetaddr_notifier = { |
3616 | .notifier_call = bond_inetaddr_event, | |
3617 | }; | |
3618 | ||
1da177e4 LT |
3619 | /*-------------------------- Packet type handling ---------------------------*/ |
3620 | ||
3621 | /* register to receive lacpdus on a bond */ | |
3622 | static void bond_register_lacpdu(struct bonding *bond) | |
3623 | { | |
3624 | struct packet_type *pk_type = &(BOND_AD_INFO(bond).ad_pkt_type); | |
3625 | ||
3626 | /* initialize packet type */ | |
3627 | pk_type->type = PKT_TYPE_LACPDU; | |
3628 | pk_type->dev = bond->dev; | |
3629 | pk_type->func = bond_3ad_lacpdu_recv; | |
3630 | ||
3631 | dev_add_pack(pk_type); | |
3632 | } | |
3633 | ||
3634 | /* unregister to receive lacpdus on a bond */ | |
3635 | static void bond_unregister_lacpdu(struct bonding *bond) | |
3636 | { | |
3637 | dev_remove_pack(&(BOND_AD_INFO(bond).ad_pkt_type)); | |
3638 | } | |
3639 | ||
f5b2b966 JV |
3640 | void bond_register_arp(struct bonding *bond) |
3641 | { | |
3642 | struct packet_type *pt = &bond->arp_mon_pt; | |
3643 | ||
c4f283b1 JV |
3644 | if (pt->type) |
3645 | return; | |
3646 | ||
f5b2b966 | 3647 | pt->type = htons(ETH_P_ARP); |
e245cb71 | 3648 | pt->dev = bond->dev; |
f5b2b966 JV |
3649 | pt->func = bond_arp_rcv; |
3650 | dev_add_pack(pt); | |
3651 | } | |
3652 | ||
3653 | void bond_unregister_arp(struct bonding *bond) | |
3654 | { | |
c4f283b1 JV |
3655 | struct packet_type *pt = &bond->arp_mon_pt; |
3656 | ||
3657 | dev_remove_pack(pt); | |
3658 | pt->type = 0; | |
f5b2b966 JV |
3659 | } |
3660 | ||
169a3e66 JV |
3661 | /*---------------------------- Hashing Policies -----------------------------*/ |
3662 | ||
6f6652be JV |
3663 | /* |
3664 | * Hash for the output device based upon layer 2 and layer 3 data. If | |
3665 | * the packet is not IP mimic bond_xmit_hash_policy_l2() | |
3666 | */ | |
a361c83c | 3667 | static int bond_xmit_hash_policy_l23(struct sk_buff *skb, int count) |
6f6652be JV |
3668 | { |
3669 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
3670 | struct iphdr *iph = ip_hdr(skb); | |
3671 | ||
f14c4e4e | 3672 | if (skb->protocol == htons(ETH_P_IP)) { |
6f6652be | 3673 | return ((ntohl(iph->saddr ^ iph->daddr) & 0xffff) ^ |
d3da6831 | 3674 | (data->h_dest[5] ^ data->h_source[5])) % count; |
6f6652be JV |
3675 | } |
3676 | ||
d3da6831 | 3677 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
6f6652be JV |
3678 | } |
3679 | ||
169a3e66 | 3680 | /* |
59c51591 | 3681 | * Hash for the output device based upon layer 3 and layer 4 data. If |
169a3e66 JV |
3682 | * the packet is a frag or not TCP or UDP, just use layer 3 data. If it is |
3683 | * altogether not IP, mimic bond_xmit_hash_policy_l2() | |
3684 | */ | |
a361c83c | 3685 | static int bond_xmit_hash_policy_l34(struct sk_buff *skb, int count) |
169a3e66 JV |
3686 | { |
3687 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
eddc9ec5 | 3688 | struct iphdr *iph = ip_hdr(skb); |
d3bb52b0 | 3689 | __be16 *layer4hdr = (__be16 *)((u32 *)iph + iph->ihl); |
169a3e66 JV |
3690 | int layer4_xor = 0; |
3691 | ||
f14c4e4e BH |
3692 | if (skb->protocol == htons(ETH_P_IP)) { |
3693 | if (!(iph->frag_off & htons(IP_MF|IP_OFFSET)) && | |
169a3e66 JV |
3694 | (iph->protocol == IPPROTO_TCP || |
3695 | iph->protocol == IPPROTO_UDP)) { | |
d3bb52b0 | 3696 | layer4_xor = ntohs((*layer4hdr ^ *(layer4hdr + 1))); |
169a3e66 JV |
3697 | } |
3698 | return (layer4_xor ^ | |
3699 | ((ntohl(iph->saddr ^ iph->daddr)) & 0xffff)) % count; | |
3700 | ||
3701 | } | |
3702 | ||
d3da6831 | 3703 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
169a3e66 JV |
3704 | } |
3705 | ||
3706 | /* | |
3707 | * Hash for the output device based upon layer 2 data | |
3708 | */ | |
a361c83c | 3709 | static int bond_xmit_hash_policy_l2(struct sk_buff *skb, int count) |
169a3e66 JV |
3710 | { |
3711 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
3712 | ||
d3da6831 | 3713 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
169a3e66 JV |
3714 | } |
3715 | ||
1da177e4 LT |
3716 | /*-------------------------- Device entry points ----------------------------*/ |
3717 | ||
3718 | static int bond_open(struct net_device *bond_dev) | |
3719 | { | |
454d7c9b | 3720 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3721 | |
3722 | bond->kill_timers = 0; | |
3723 | ||
58402054 | 3724 | if (bond_is_lb(bond)) { |
1da177e4 LT |
3725 | /* bond_alb_initialize must be called before the timer |
3726 | * is started. | |
3727 | */ | |
3728 | if (bond_alb_initialize(bond, (bond->params.mode == BOND_MODE_ALB))) { | |
3729 | /* something went wrong - fail the open operation */ | |
3730 | return -1; | |
3731 | } | |
3732 | ||
1b76b316 JV |
3733 | INIT_DELAYED_WORK(&bond->alb_work, bond_alb_monitor); |
3734 | queue_delayed_work(bond->wq, &bond->alb_work, 0); | |
1da177e4 LT |
3735 | } |
3736 | ||
3737 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ | |
1b76b316 JV |
3738 | INIT_DELAYED_WORK(&bond->mii_work, bond_mii_monitor); |
3739 | queue_delayed_work(bond->wq, &bond->mii_work, 0); | |
1da177e4 LT |
3740 | } |
3741 | ||
3742 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ | |
1b76b316 JV |
3743 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) |
3744 | INIT_DELAYED_WORK(&bond->arp_work, | |
3745 | bond_activebackup_arp_mon); | |
3746 | else | |
3747 | INIT_DELAYED_WORK(&bond->arp_work, | |
3748 | bond_loadbalance_arp_mon); | |
3749 | ||
3750 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
f5b2b966 JV |
3751 | if (bond->params.arp_validate) |
3752 | bond_register_arp(bond); | |
1da177e4 LT |
3753 | } |
3754 | ||
3755 | if (bond->params.mode == BOND_MODE_8023AD) { | |
a40745f5 | 3756 | INIT_DELAYED_WORK(&bond->ad_work, bond_3ad_state_machine_handler); |
1b76b316 | 3757 | queue_delayed_work(bond->wq, &bond->ad_work, 0); |
1da177e4 LT |
3758 | /* register to receive LACPDUs */ |
3759 | bond_register_lacpdu(bond); | |
fd989c83 | 3760 | bond_3ad_initiate_agg_selection(bond, 1); |
1da177e4 LT |
3761 | } |
3762 | ||
3763 | return 0; | |
3764 | } | |
3765 | ||
3766 | static int bond_close(struct net_device *bond_dev) | |
3767 | { | |
454d7c9b | 3768 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3769 | |
3770 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3771 | /* Unregister the receive of LACPDUs */ | |
3772 | bond_unregister_lacpdu(bond); | |
3773 | } | |
3774 | ||
f5b2b966 JV |
3775 | if (bond->params.arp_validate) |
3776 | bond_unregister_arp(bond); | |
3777 | ||
1da177e4 LT |
3778 | write_lock_bh(&bond->lock); |
3779 | ||
b59f9f74 | 3780 | bond->send_grat_arp = 0; |
305d552a | 3781 | bond->send_unsol_na = 0; |
1da177e4 LT |
3782 | |
3783 | /* signal timers not to re-arm */ | |
3784 | bond->kill_timers = 1; | |
3785 | ||
3786 | write_unlock_bh(&bond->lock); | |
3787 | ||
1da177e4 | 3788 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ |
1b76b316 | 3789 | cancel_delayed_work(&bond->mii_work); |
1da177e4 LT |
3790 | } |
3791 | ||
3792 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ | |
1b76b316 | 3793 | cancel_delayed_work(&bond->arp_work); |
1da177e4 LT |
3794 | } |
3795 | ||
3796 | switch (bond->params.mode) { | |
3797 | case BOND_MODE_8023AD: | |
1b76b316 | 3798 | cancel_delayed_work(&bond->ad_work); |
1da177e4 LT |
3799 | break; |
3800 | case BOND_MODE_TLB: | |
3801 | case BOND_MODE_ALB: | |
1b76b316 | 3802 | cancel_delayed_work(&bond->alb_work); |
1da177e4 LT |
3803 | break; |
3804 | default: | |
3805 | break; | |
3806 | } | |
3807 | ||
1da177e4 | 3808 | |
58402054 | 3809 | if (bond_is_lb(bond)) { |
1da177e4 LT |
3810 | /* Must be called only after all |
3811 | * slaves have been released | |
3812 | */ | |
3813 | bond_alb_deinitialize(bond); | |
3814 | } | |
3815 | ||
3816 | return 0; | |
3817 | } | |
3818 | ||
3819 | static struct net_device_stats *bond_get_stats(struct net_device *bond_dev) | |
3820 | { | |
454d7c9b | 3821 | struct bonding *bond = netdev_priv(bond_dev); |
eeda3fd6 | 3822 | struct net_device_stats *stats = &bond->stats; |
2439f9eb | 3823 | struct net_device_stats local_stats; |
1da177e4 LT |
3824 | struct slave *slave; |
3825 | int i; | |
3826 | ||
2439f9eb | 3827 | memset(&local_stats, 0, sizeof(struct net_device_stats)); |
1da177e4 LT |
3828 | |
3829 | read_lock_bh(&bond->lock); | |
3830 | ||
3831 | bond_for_each_slave(bond, slave, i) { | |
eeda3fd6 SH |
3832 | const struct net_device_stats *sstats = dev_get_stats(slave->dev); |
3833 | ||
2439f9eb AG |
3834 | local_stats.rx_packets += sstats->rx_packets; |
3835 | local_stats.rx_bytes += sstats->rx_bytes; | |
3836 | local_stats.rx_errors += sstats->rx_errors; | |
3837 | local_stats.rx_dropped += sstats->rx_dropped; | |
3838 | ||
3839 | local_stats.tx_packets += sstats->tx_packets; | |
3840 | local_stats.tx_bytes += sstats->tx_bytes; | |
3841 | local_stats.tx_errors += sstats->tx_errors; | |
3842 | local_stats.tx_dropped += sstats->tx_dropped; | |
3843 | ||
3844 | local_stats.multicast += sstats->multicast; | |
3845 | local_stats.collisions += sstats->collisions; | |
3846 | ||
3847 | local_stats.rx_length_errors += sstats->rx_length_errors; | |
3848 | local_stats.rx_over_errors += sstats->rx_over_errors; | |
3849 | local_stats.rx_crc_errors += sstats->rx_crc_errors; | |
3850 | local_stats.rx_frame_errors += sstats->rx_frame_errors; | |
3851 | local_stats.rx_fifo_errors += sstats->rx_fifo_errors; | |
3852 | local_stats.rx_missed_errors += sstats->rx_missed_errors; | |
3853 | ||
3854 | local_stats.tx_aborted_errors += sstats->tx_aborted_errors; | |
3855 | local_stats.tx_carrier_errors += sstats->tx_carrier_errors; | |
3856 | local_stats.tx_fifo_errors += sstats->tx_fifo_errors; | |
3857 | local_stats.tx_heartbeat_errors += sstats->tx_heartbeat_errors; | |
3858 | local_stats.tx_window_errors += sstats->tx_window_errors; | |
3859 | } | |
3860 | ||
3861 | memcpy(stats, &local_stats, sizeof(struct net_device_stats)); | |
1da177e4 LT |
3862 | |
3863 | read_unlock_bh(&bond->lock); | |
3864 | ||
3865 | return stats; | |
3866 | } | |
3867 | ||
3868 | static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd) | |
3869 | { | |
3870 | struct net_device *slave_dev = NULL; | |
3871 | struct ifbond k_binfo; | |
3872 | struct ifbond __user *u_binfo = NULL; | |
3873 | struct ifslave k_sinfo; | |
3874 | struct ifslave __user *u_sinfo = NULL; | |
3875 | struct mii_ioctl_data *mii = NULL; | |
1da177e4 LT |
3876 | int res = 0; |
3877 | ||
5a03cdb7 | 3878 | pr_debug("bond_ioctl: master=%s, cmd=%d\n", |
1da177e4 LT |
3879 | bond_dev->name, cmd); |
3880 | ||
3881 | switch (cmd) { | |
1da177e4 LT |
3882 | case SIOCGMIIPHY: |
3883 | mii = if_mii(ifr); | |
3d632c3f | 3884 | if (!mii) |
1da177e4 | 3885 | return -EINVAL; |
3d632c3f | 3886 | |
1da177e4 LT |
3887 | mii->phy_id = 0; |
3888 | /* Fall Through */ | |
3889 | case SIOCGMIIREG: | |
3890 | /* | |
3891 | * We do this again just in case we were called by SIOCGMIIREG | |
3892 | * instead of SIOCGMIIPHY. | |
3893 | */ | |
3894 | mii = if_mii(ifr); | |
3d632c3f | 3895 | if (!mii) |
1da177e4 | 3896 | return -EINVAL; |
3d632c3f | 3897 | |
1da177e4 LT |
3898 | |
3899 | if (mii->reg_num == 1) { | |
454d7c9b | 3900 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 3901 | mii->val_out = 0; |
6603a6f2 | 3902 | read_lock(&bond->lock); |
1da177e4 | 3903 | read_lock(&bond->curr_slave_lock); |
3d632c3f | 3904 | if (netif_carrier_ok(bond->dev)) |
1da177e4 | 3905 | mii->val_out = BMSR_LSTATUS; |
3d632c3f | 3906 | |
1da177e4 | 3907 | read_unlock(&bond->curr_slave_lock); |
6603a6f2 | 3908 | read_unlock(&bond->lock); |
1da177e4 LT |
3909 | } |
3910 | ||
3911 | return 0; | |
3912 | case BOND_INFO_QUERY_OLD: | |
3913 | case SIOCBONDINFOQUERY: | |
3914 | u_binfo = (struct ifbond __user *)ifr->ifr_data; | |
3915 | ||
3d632c3f | 3916 | if (copy_from_user(&k_binfo, u_binfo, sizeof(ifbond))) |
1da177e4 | 3917 | return -EFAULT; |
1da177e4 LT |
3918 | |
3919 | res = bond_info_query(bond_dev, &k_binfo); | |
3d632c3f SH |
3920 | if (res == 0 && |
3921 | copy_to_user(u_binfo, &k_binfo, sizeof(ifbond))) | |
3922 | return -EFAULT; | |
1da177e4 LT |
3923 | |
3924 | return res; | |
3925 | case BOND_SLAVE_INFO_QUERY_OLD: | |
3926 | case SIOCBONDSLAVEINFOQUERY: | |
3927 | u_sinfo = (struct ifslave __user *)ifr->ifr_data; | |
3928 | ||
3d632c3f | 3929 | if (copy_from_user(&k_sinfo, u_sinfo, sizeof(ifslave))) |
1da177e4 | 3930 | return -EFAULT; |
1da177e4 LT |
3931 | |
3932 | res = bond_slave_info_query(bond_dev, &k_sinfo); | |
3d632c3f SH |
3933 | if (res == 0 && |
3934 | copy_to_user(u_sinfo, &k_sinfo, sizeof(ifslave))) | |
3935 | return -EFAULT; | |
1da177e4 LT |
3936 | |
3937 | return res; | |
3938 | default: | |
3939 | /* Go on */ | |
3940 | break; | |
3941 | } | |
3942 | ||
3d632c3f | 3943 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 3944 | return -EPERM; |
1da177e4 | 3945 | |
ec87fd3b | 3946 | slave_dev = dev_get_by_name(dev_net(bond_dev), ifr->ifr_slave); |
1da177e4 | 3947 | |
5a03cdb7 | 3948 | pr_debug("slave_dev=%p: \n", slave_dev); |
1da177e4 | 3949 | |
3d632c3f | 3950 | if (!slave_dev) |
1da177e4 | 3951 | res = -ENODEV; |
3d632c3f | 3952 | else { |
5a03cdb7 | 3953 | pr_debug("slave_dev->name=%s: \n", slave_dev->name); |
1da177e4 LT |
3954 | switch (cmd) { |
3955 | case BOND_ENSLAVE_OLD: | |
3956 | case SIOCBONDENSLAVE: | |
3957 | res = bond_enslave(bond_dev, slave_dev); | |
3958 | break; | |
3959 | case BOND_RELEASE_OLD: | |
3960 | case SIOCBONDRELEASE: | |
3961 | res = bond_release(bond_dev, slave_dev); | |
3962 | break; | |
3963 | case BOND_SETHWADDR_OLD: | |
3964 | case SIOCBONDSETHWADDR: | |
3965 | res = bond_sethwaddr(bond_dev, slave_dev); | |
3966 | break; | |
3967 | case BOND_CHANGE_ACTIVE_OLD: | |
3968 | case SIOCBONDCHANGEACTIVE: | |
3969 | res = bond_ioctl_change_active(bond_dev, slave_dev); | |
3970 | break; | |
3971 | default: | |
3972 | res = -EOPNOTSUPP; | |
3973 | } | |
3974 | ||
3975 | dev_put(slave_dev); | |
3976 | } | |
3977 | ||
1da177e4 LT |
3978 | return res; |
3979 | } | |
3980 | ||
3981 | static void bond_set_multicast_list(struct net_device *bond_dev) | |
3982 | { | |
454d7c9b | 3983 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3984 | struct dev_mc_list *dmi; |
3985 | ||
1da177e4 LT |
3986 | /* |
3987 | * Do promisc before checking multicast_mode | |
3988 | */ | |
3d632c3f | 3989 | if ((bond_dev->flags & IFF_PROMISC) && !(bond->flags & IFF_PROMISC)) |
7e1a1ac1 WC |
3990 | /* |
3991 | * FIXME: Need to handle the error when one of the multi-slaves | |
3992 | * encounters error. | |
3993 | */ | |
1da177e4 | 3994 | bond_set_promiscuity(bond, 1); |
1da177e4 | 3995 | |
3d632c3f SH |
3996 | |
3997 | if (!(bond_dev->flags & IFF_PROMISC) && (bond->flags & IFF_PROMISC)) | |
1da177e4 | 3998 | bond_set_promiscuity(bond, -1); |
3d632c3f | 3999 | |
1da177e4 LT |
4000 | |
4001 | /* set allmulti flag to slaves */ | |
3d632c3f | 4002 | if ((bond_dev->flags & IFF_ALLMULTI) && !(bond->flags & IFF_ALLMULTI)) |
7e1a1ac1 WC |
4003 | /* |
4004 | * FIXME: Need to handle the error when one of the multi-slaves | |
4005 | * encounters error. | |
4006 | */ | |
1da177e4 | 4007 | bond_set_allmulti(bond, 1); |
1da177e4 | 4008 | |
3d632c3f SH |
4009 | |
4010 | if (!(bond_dev->flags & IFF_ALLMULTI) && (bond->flags & IFF_ALLMULTI)) | |
1da177e4 | 4011 | bond_set_allmulti(bond, -1); |
3d632c3f | 4012 | |
1da177e4 | 4013 | |
80ee5ad2 JV |
4014 | read_lock(&bond->lock); |
4015 | ||
1da177e4 LT |
4016 | bond->flags = bond_dev->flags; |
4017 | ||
4018 | /* looking for addresses to add to slaves' mc list */ | |
4019 | for (dmi = bond_dev->mc_list; dmi; dmi = dmi->next) { | |
3d632c3f | 4020 | if (!bond_mc_list_find_dmi(dmi, bond->mc_list)) |
1da177e4 | 4021 | bond_mc_add(bond, dmi->dmi_addr, dmi->dmi_addrlen); |
1da177e4 LT |
4022 | } |
4023 | ||
4024 | /* looking for addresses to delete from slaves' list */ | |
4025 | for (dmi = bond->mc_list; dmi; dmi = dmi->next) { | |
3d632c3f | 4026 | if (!bond_mc_list_find_dmi(dmi, bond_dev->mc_list)) |
1da177e4 | 4027 | bond_mc_delete(bond, dmi->dmi_addr, dmi->dmi_addrlen); |
1da177e4 LT |
4028 | } |
4029 | ||
4030 | /* save master's multicast list */ | |
4031 | bond_mc_list_destroy(bond); | |
4032 | bond_mc_list_copy(bond_dev->mc_list, bond, GFP_ATOMIC); | |
4033 | ||
80ee5ad2 | 4034 | read_unlock(&bond->lock); |
1da177e4 LT |
4035 | } |
4036 | ||
00829823 SH |
4037 | static int bond_neigh_setup(struct net_device *dev, struct neigh_parms *parms) |
4038 | { | |
4039 | struct bonding *bond = netdev_priv(dev); | |
4040 | struct slave *slave = bond->first_slave; | |
4041 | ||
4042 | if (slave) { | |
4043 | const struct net_device_ops *slave_ops | |
4044 | = slave->dev->netdev_ops; | |
4045 | if (slave_ops->ndo_neigh_setup) | |
72e2240f | 4046 | return slave_ops->ndo_neigh_setup(slave->dev, parms); |
00829823 SH |
4047 | } |
4048 | return 0; | |
4049 | } | |
4050 | ||
1da177e4 LT |
4051 | /* |
4052 | * Change the MTU of all of a master's slaves to match the master | |
4053 | */ | |
4054 | static int bond_change_mtu(struct net_device *bond_dev, int new_mtu) | |
4055 | { | |
454d7c9b | 4056 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4057 | struct slave *slave, *stop_at; |
4058 | int res = 0; | |
4059 | int i; | |
4060 | ||
5a03cdb7 | 4061 | pr_debug("bond=%p, name=%s, new_mtu=%d\n", bond, |
1da177e4 LT |
4062 | (bond_dev ? bond_dev->name : "None"), new_mtu); |
4063 | ||
4064 | /* Can't hold bond->lock with bh disabled here since | |
4065 | * some base drivers panic. On the other hand we can't | |
4066 | * hold bond->lock without bh disabled because we'll | |
4067 | * deadlock. The only solution is to rely on the fact | |
4068 | * that we're under rtnl_lock here, and the slaves | |
4069 | * list won't change. This doesn't solve the problem | |
4070 | * of setting the slave's MTU while it is | |
4071 | * transmitting, but the assumption is that the base | |
4072 | * driver can handle that. | |
4073 | * | |
4074 | * TODO: figure out a way to safely iterate the slaves | |
4075 | * list, but without holding a lock around the actual | |
4076 | * call to the base driver. | |
4077 | */ | |
4078 | ||
4079 | bond_for_each_slave(bond, slave, i) { | |
5a03cdb7 | 4080 | pr_debug("s %p s->p %p c_m %p\n", slave, |
53a3294e | 4081 | slave->prev, slave->dev->netdev_ops->ndo_change_mtu); |
e944ef79 | 4082 | |
1da177e4 LT |
4083 | res = dev_set_mtu(slave->dev, new_mtu); |
4084 | ||
4085 | if (res) { | |
4086 | /* If we failed to set the slave's mtu to the new value | |
4087 | * we must abort the operation even in ACTIVE_BACKUP | |
4088 | * mode, because if we allow the backup slaves to have | |
4089 | * different mtu values than the active slave we'll | |
4090 | * need to change their mtu when doing a failover. That | |
4091 | * means changing their mtu from timer context, which | |
4092 | * is probably not a good idea. | |
4093 | */ | |
5a03cdb7 | 4094 | pr_debug("err %d %s\n", res, slave->dev->name); |
1da177e4 LT |
4095 | goto unwind; |
4096 | } | |
4097 | } | |
4098 | ||
4099 | bond_dev->mtu = new_mtu; | |
4100 | ||
4101 | return 0; | |
4102 | ||
4103 | unwind: | |
4104 | /* unwind from head to the slave that failed */ | |
4105 | stop_at = slave; | |
4106 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { | |
4107 | int tmp_res; | |
4108 | ||
4109 | tmp_res = dev_set_mtu(slave->dev, bond_dev->mtu); | |
4110 | if (tmp_res) { | |
5a03cdb7 | 4111 | pr_debug("unwind err %d dev %s\n", tmp_res, |
1da177e4 LT |
4112 | slave->dev->name); |
4113 | } | |
4114 | } | |
4115 | ||
4116 | return res; | |
4117 | } | |
4118 | ||
4119 | /* | |
4120 | * Change HW address | |
4121 | * | |
4122 | * Note that many devices must be down to change the HW address, and | |
4123 | * downing the master releases all slaves. We can make bonds full of | |
4124 | * bonding devices to test this, however. | |
4125 | */ | |
4126 | static int bond_set_mac_address(struct net_device *bond_dev, void *addr) | |
4127 | { | |
454d7c9b | 4128 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4129 | struct sockaddr *sa = addr, tmp_sa; |
4130 | struct slave *slave, *stop_at; | |
4131 | int res = 0; | |
4132 | int i; | |
4133 | ||
eb7cc59a SH |
4134 | if (bond->params.mode == BOND_MODE_ALB) |
4135 | return bond_alb_set_mac_address(bond_dev, addr); | |
4136 | ||
4137 | ||
5a03cdb7 | 4138 | pr_debug("bond=%p, name=%s\n", bond, (bond_dev ? bond_dev->name : "None")); |
1da177e4 | 4139 | |
dd957c57 | 4140 | /* |
3915c1e8 JV |
4141 | * If fail_over_mac is set to active, do nothing and return |
4142 | * success. Returning an error causes ifenslave to fail. | |
dd957c57 | 4143 | */ |
3915c1e8 | 4144 | if (bond->params.fail_over_mac == BOND_FOM_ACTIVE) |
dd957c57 | 4145 | return 0; |
2ab82852 | 4146 | |
3d632c3f | 4147 | if (!is_valid_ether_addr(sa->sa_data)) |
1da177e4 | 4148 | return -EADDRNOTAVAIL; |
1da177e4 LT |
4149 | |
4150 | /* Can't hold bond->lock with bh disabled here since | |
4151 | * some base drivers panic. On the other hand we can't | |
4152 | * hold bond->lock without bh disabled because we'll | |
4153 | * deadlock. The only solution is to rely on the fact | |
4154 | * that we're under rtnl_lock here, and the slaves | |
4155 | * list won't change. This doesn't solve the problem | |
4156 | * of setting the slave's hw address while it is | |
4157 | * transmitting, but the assumption is that the base | |
4158 | * driver can handle that. | |
4159 | * | |
4160 | * TODO: figure out a way to safely iterate the slaves | |
4161 | * list, but without holding a lock around the actual | |
4162 | * call to the base driver. | |
4163 | */ | |
4164 | ||
4165 | bond_for_each_slave(bond, slave, i) { | |
eb7cc59a | 4166 | const struct net_device_ops *slave_ops = slave->dev->netdev_ops; |
5a03cdb7 | 4167 | pr_debug("slave %p %s\n", slave, slave->dev->name); |
1da177e4 | 4168 | |
eb7cc59a | 4169 | if (slave_ops->ndo_set_mac_address == NULL) { |
1da177e4 | 4170 | res = -EOPNOTSUPP; |
5a03cdb7 | 4171 | pr_debug("EOPNOTSUPP %s\n", slave->dev->name); |
1da177e4 LT |
4172 | goto unwind; |
4173 | } | |
4174 | ||
4175 | res = dev_set_mac_address(slave->dev, addr); | |
4176 | if (res) { | |
4177 | /* TODO: consider downing the slave | |
4178 | * and retry ? | |
4179 | * User should expect communications | |
4180 | * breakage anyway until ARP finish | |
4181 | * updating, so... | |
4182 | */ | |
5a03cdb7 | 4183 | pr_debug("err %d %s\n", res, slave->dev->name); |
1da177e4 LT |
4184 | goto unwind; |
4185 | } | |
4186 | } | |
4187 | ||
4188 | /* success */ | |
4189 | memcpy(bond_dev->dev_addr, sa->sa_data, bond_dev->addr_len); | |
4190 | return 0; | |
4191 | ||
4192 | unwind: | |
4193 | memcpy(tmp_sa.sa_data, bond_dev->dev_addr, bond_dev->addr_len); | |
4194 | tmp_sa.sa_family = bond_dev->type; | |
4195 | ||
4196 | /* unwind from head to the slave that failed */ | |
4197 | stop_at = slave; | |
4198 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { | |
4199 | int tmp_res; | |
4200 | ||
4201 | tmp_res = dev_set_mac_address(slave->dev, &tmp_sa); | |
4202 | if (tmp_res) { | |
5a03cdb7 | 4203 | pr_debug("unwind err %d dev %s\n", tmp_res, |
1da177e4 LT |
4204 | slave->dev->name); |
4205 | } | |
4206 | } | |
4207 | ||
4208 | return res; | |
4209 | } | |
4210 | ||
4211 | static int bond_xmit_roundrobin(struct sk_buff *skb, struct net_device *bond_dev) | |
4212 | { | |
454d7c9b | 4213 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 4214 | struct slave *slave, *start_at; |
cf5f9044 | 4215 | int i, slave_no, res = 1; |
1da177e4 LT |
4216 | |
4217 | read_lock(&bond->lock); | |
4218 | ||
3d632c3f | 4219 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4220 | goto out; |
1da177e4 | 4221 | |
cf5f9044 JV |
4222 | /* |
4223 | * Concurrent TX may collide on rr_tx_counter; we accept that | |
4224 | * as being rare enough not to justify using an atomic op here | |
4225 | */ | |
4226 | slave_no = bond->rr_tx_counter++ % bond->slave_cnt; | |
1da177e4 | 4227 | |
cf5f9044 JV |
4228 | bond_for_each_slave(bond, slave, i) { |
4229 | slave_no--; | |
3d632c3f | 4230 | if (slave_no < 0) |
cf5f9044 | 4231 | break; |
1da177e4 LT |
4232 | } |
4233 | ||
cf5f9044 | 4234 | start_at = slave; |
1da177e4 LT |
4235 | bond_for_each_slave_from(bond, slave, i, start_at) { |
4236 | if (IS_UP(slave->dev) && | |
4237 | (slave->link == BOND_LINK_UP) && | |
4238 | (slave->state == BOND_STATE_ACTIVE)) { | |
4239 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
1da177e4 LT |
4240 | break; |
4241 | } | |
4242 | } | |
4243 | ||
1da177e4 LT |
4244 | out: |
4245 | if (res) { | |
4246 | /* no suitable interface, frame not sent */ | |
4247 | dev_kfree_skb(skb); | |
4248 | } | |
4249 | read_unlock(&bond->lock); | |
ec634fe3 | 4250 | return NETDEV_TX_OK; |
1da177e4 LT |
4251 | } |
4252 | ||
075897ce | 4253 | |
1da177e4 LT |
4254 | /* |
4255 | * in active-backup mode, we know that bond->curr_active_slave is always valid if | |
4256 | * the bond has a usable interface. | |
4257 | */ | |
4258 | static int bond_xmit_activebackup(struct sk_buff *skb, struct net_device *bond_dev) | |
4259 | { | |
454d7c9b | 4260 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4261 | int res = 1; |
4262 | ||
1da177e4 LT |
4263 | read_lock(&bond->lock); |
4264 | read_lock(&bond->curr_slave_lock); | |
4265 | ||
3d632c3f | 4266 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4267 | goto out; |
1da177e4 | 4268 | |
075897ce JL |
4269 | if (!bond->curr_active_slave) |
4270 | goto out; | |
4271 | ||
075897ce JL |
4272 | res = bond_dev_queue_xmit(bond, skb, bond->curr_active_slave->dev); |
4273 | ||
1da177e4 | 4274 | out: |
3d632c3f | 4275 | if (res) |
1da177e4 LT |
4276 | /* no suitable interface, frame not sent */ |
4277 | dev_kfree_skb(skb); | |
3d632c3f | 4278 | |
1da177e4 LT |
4279 | read_unlock(&bond->curr_slave_lock); |
4280 | read_unlock(&bond->lock); | |
ec634fe3 | 4281 | return NETDEV_TX_OK; |
1da177e4 LT |
4282 | } |
4283 | ||
4284 | /* | |
169a3e66 JV |
4285 | * In bond_xmit_xor() , we determine the output device by using a pre- |
4286 | * determined xmit_hash_policy(), If the selected device is not enabled, | |
4287 | * find the next active slave. | |
1da177e4 LT |
4288 | */ |
4289 | static int bond_xmit_xor(struct sk_buff *skb, struct net_device *bond_dev) | |
4290 | { | |
454d7c9b | 4291 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4292 | struct slave *slave, *start_at; |
4293 | int slave_no; | |
4294 | int i; | |
4295 | int res = 1; | |
4296 | ||
4297 | read_lock(&bond->lock); | |
4298 | ||
3d632c3f | 4299 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4300 | goto out; |
1da177e4 | 4301 | |
a361c83c | 4302 | slave_no = bond->xmit_hash_policy(skb, bond->slave_cnt); |
1da177e4 LT |
4303 | |
4304 | bond_for_each_slave(bond, slave, i) { | |
4305 | slave_no--; | |
3d632c3f | 4306 | if (slave_no < 0) |
1da177e4 | 4307 | break; |
1da177e4 LT |
4308 | } |
4309 | ||
4310 | start_at = slave; | |
4311 | ||
4312 | bond_for_each_slave_from(bond, slave, i, start_at) { | |
4313 | if (IS_UP(slave->dev) && | |
4314 | (slave->link == BOND_LINK_UP) && | |
4315 | (slave->state == BOND_STATE_ACTIVE)) { | |
4316 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
4317 | break; | |
4318 | } | |
4319 | } | |
4320 | ||
4321 | out: | |
4322 | if (res) { | |
4323 | /* no suitable interface, frame not sent */ | |
4324 | dev_kfree_skb(skb); | |
4325 | } | |
4326 | read_unlock(&bond->lock); | |
ec634fe3 | 4327 | return NETDEV_TX_OK; |
1da177e4 LT |
4328 | } |
4329 | ||
4330 | /* | |
4331 | * in broadcast mode, we send everything to all usable interfaces. | |
4332 | */ | |
4333 | static int bond_xmit_broadcast(struct sk_buff *skb, struct net_device *bond_dev) | |
4334 | { | |
454d7c9b | 4335 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4336 | struct slave *slave, *start_at; |
4337 | struct net_device *tx_dev = NULL; | |
4338 | int i; | |
4339 | int res = 1; | |
4340 | ||
4341 | read_lock(&bond->lock); | |
4342 | ||
3d632c3f | 4343 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4344 | goto out; |
1da177e4 LT |
4345 | |
4346 | read_lock(&bond->curr_slave_lock); | |
4347 | start_at = bond->curr_active_slave; | |
4348 | read_unlock(&bond->curr_slave_lock); | |
4349 | ||
3d632c3f | 4350 | if (!start_at) |
1da177e4 | 4351 | goto out; |
1da177e4 LT |
4352 | |
4353 | bond_for_each_slave_from(bond, slave, i, start_at) { | |
4354 | if (IS_UP(slave->dev) && | |
4355 | (slave->link == BOND_LINK_UP) && | |
4356 | (slave->state == BOND_STATE_ACTIVE)) { | |
4357 | if (tx_dev) { | |
4358 | struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC); | |
4359 | if (!skb2) { | |
3d632c3f | 4360 | pr_err(DRV_NAME |
4e0952c7 MW |
4361 | ": %s: Error: bond_xmit_broadcast(): " |
4362 | "skb_clone() failed\n", | |
4363 | bond_dev->name); | |
1da177e4 LT |
4364 | continue; |
4365 | } | |
4366 | ||
4367 | res = bond_dev_queue_xmit(bond, skb2, tx_dev); | |
4368 | if (res) { | |
4369 | dev_kfree_skb(skb2); | |
4370 | continue; | |
4371 | } | |
4372 | } | |
4373 | tx_dev = slave->dev; | |
4374 | } | |
4375 | } | |
4376 | ||
3d632c3f | 4377 | if (tx_dev) |
1da177e4 | 4378 | res = bond_dev_queue_xmit(bond, skb, tx_dev); |
1da177e4 LT |
4379 | |
4380 | out: | |
3d632c3f | 4381 | if (res) |
1da177e4 LT |
4382 | /* no suitable interface, frame not sent */ |
4383 | dev_kfree_skb(skb); | |
3d632c3f | 4384 | |
1da177e4 LT |
4385 | /* frame sent to all suitable interfaces */ |
4386 | read_unlock(&bond->lock); | |
ec634fe3 | 4387 | return NETDEV_TX_OK; |
1da177e4 LT |
4388 | } |
4389 | ||
4390 | /*------------------------- Device initialization ---------------------------*/ | |
4391 | ||
6f6652be JV |
4392 | static void bond_set_xmit_hash_policy(struct bonding *bond) |
4393 | { | |
4394 | switch (bond->params.xmit_policy) { | |
4395 | case BOND_XMIT_POLICY_LAYER23: | |
4396 | bond->xmit_hash_policy = bond_xmit_hash_policy_l23; | |
4397 | break; | |
4398 | case BOND_XMIT_POLICY_LAYER34: | |
4399 | bond->xmit_hash_policy = bond_xmit_hash_policy_l34; | |
4400 | break; | |
4401 | case BOND_XMIT_POLICY_LAYER2: | |
4402 | default: | |
4403 | bond->xmit_hash_policy = bond_xmit_hash_policy_l2; | |
4404 | break; | |
4405 | } | |
4406 | } | |
4407 | ||
424efe9c | 4408 | static netdev_tx_t bond_start_xmit(struct sk_buff *skb, struct net_device *dev) |
00829823 SH |
4409 | { |
4410 | const struct bonding *bond = netdev_priv(dev); | |
4411 | ||
4412 | switch (bond->params.mode) { | |
4413 | case BOND_MODE_ROUNDROBIN: | |
4414 | return bond_xmit_roundrobin(skb, dev); | |
4415 | case BOND_MODE_ACTIVEBACKUP: | |
4416 | return bond_xmit_activebackup(skb, dev); | |
4417 | case BOND_MODE_XOR: | |
4418 | return bond_xmit_xor(skb, dev); | |
4419 | case BOND_MODE_BROADCAST: | |
4420 | return bond_xmit_broadcast(skb, dev); | |
4421 | case BOND_MODE_8023AD: | |
4422 | return bond_3ad_xmit_xor(skb, dev); | |
4423 | case BOND_MODE_ALB: | |
4424 | case BOND_MODE_TLB: | |
4425 | return bond_alb_xmit(skb, dev); | |
4426 | default: | |
4427 | /* Should never happen, mode already checked */ | |
3d632c3f | 4428 | pr_err(DRV_NAME ": %s: Error: Unknown bonding mode %d\n", |
00829823 SH |
4429 | dev->name, bond->params.mode); |
4430 | WARN_ON_ONCE(1); | |
4431 | dev_kfree_skb(skb); | |
4432 | return NETDEV_TX_OK; | |
4433 | } | |
4434 | } | |
4435 | ||
4436 | ||
1da177e4 LT |
4437 | /* |
4438 | * set bond mode specific net device operations | |
4439 | */ | |
a77b5325 | 4440 | void bond_set_mode_ops(struct bonding *bond, int mode) |
1da177e4 | 4441 | { |
169a3e66 JV |
4442 | struct net_device *bond_dev = bond->dev; |
4443 | ||
1da177e4 LT |
4444 | switch (mode) { |
4445 | case BOND_MODE_ROUNDROBIN: | |
1da177e4 LT |
4446 | break; |
4447 | case BOND_MODE_ACTIVEBACKUP: | |
1da177e4 LT |
4448 | break; |
4449 | case BOND_MODE_XOR: | |
6f6652be | 4450 | bond_set_xmit_hash_policy(bond); |
1da177e4 LT |
4451 | break; |
4452 | case BOND_MODE_BROADCAST: | |
1da177e4 LT |
4453 | break; |
4454 | case BOND_MODE_8023AD: | |
8f903c70 | 4455 | bond_set_master_3ad_flags(bond); |
6f6652be | 4456 | bond_set_xmit_hash_policy(bond); |
1da177e4 | 4457 | break; |
1da177e4 | 4458 | case BOND_MODE_ALB: |
8f903c70 JV |
4459 | bond_set_master_alb_flags(bond); |
4460 | /* FALLTHRU */ | |
4461 | case BOND_MODE_TLB: | |
1da177e4 LT |
4462 | break; |
4463 | default: | |
4464 | /* Should never happen, mode already checked */ | |
3d632c3f | 4465 | pr_err(DRV_NAME |
4e0952c7 MW |
4466 | ": %s: Error: Unknown bonding mode %d\n", |
4467 | bond_dev->name, | |
1da177e4 LT |
4468 | mode); |
4469 | break; | |
4470 | } | |
4471 | } | |
4472 | ||
217df670 JV |
4473 | static void bond_ethtool_get_drvinfo(struct net_device *bond_dev, |
4474 | struct ethtool_drvinfo *drvinfo) | |
4475 | { | |
4476 | strncpy(drvinfo->driver, DRV_NAME, 32); | |
4477 | strncpy(drvinfo->version, DRV_VERSION, 32); | |
4478 | snprintf(drvinfo->fw_version, 32, "%d", BOND_ABI_VERSION); | |
4479 | } | |
4480 | ||
7282d491 | 4481 | static const struct ethtool_ops bond_ethtool_ops = { |
217df670 | 4482 | .get_drvinfo = bond_ethtool_get_drvinfo, |
fa53ebac SH |
4483 | .get_link = ethtool_op_get_link, |
4484 | .get_tx_csum = ethtool_op_get_tx_csum, | |
4485 | .get_sg = ethtool_op_get_sg, | |
4486 | .get_tso = ethtool_op_get_tso, | |
4487 | .get_ufo = ethtool_op_get_ufo, | |
4488 | .get_flags = ethtool_op_get_flags, | |
8531c5ff AK |
4489 | }; |
4490 | ||
eb7cc59a | 4491 | static const struct net_device_ops bond_netdev_ops = { |
181470fc | 4492 | .ndo_init = bond_init, |
9e71626c | 4493 | .ndo_uninit = bond_uninit, |
eb7cc59a SH |
4494 | .ndo_open = bond_open, |
4495 | .ndo_stop = bond_close, | |
00829823 | 4496 | .ndo_start_xmit = bond_start_xmit, |
eb7cc59a SH |
4497 | .ndo_get_stats = bond_get_stats, |
4498 | .ndo_do_ioctl = bond_do_ioctl, | |
4499 | .ndo_set_multicast_list = bond_set_multicast_list, | |
4500 | .ndo_change_mtu = bond_change_mtu, | |
eb7cc59a | 4501 | .ndo_set_mac_address = bond_set_mac_address, |
00829823 | 4502 | .ndo_neigh_setup = bond_neigh_setup, |
eb7cc59a SH |
4503 | .ndo_vlan_rx_register = bond_vlan_rx_register, |
4504 | .ndo_vlan_rx_add_vid = bond_vlan_rx_add_vid, | |
4505 | .ndo_vlan_rx_kill_vid = bond_vlan_rx_kill_vid, | |
4506 | }; | |
4507 | ||
181470fc | 4508 | static void bond_setup(struct net_device *bond_dev) |
1da177e4 | 4509 | { |
454d7c9b | 4510 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 4511 | |
1da177e4 LT |
4512 | /* initialize rwlocks */ |
4513 | rwlock_init(&bond->lock); | |
4514 | rwlock_init(&bond->curr_slave_lock); | |
4515 | ||
d2991f75 | 4516 | bond->params = bonding_defaults; |
1da177e4 LT |
4517 | |
4518 | /* Initialize pointers */ | |
1da177e4 LT |
4519 | bond->dev = bond_dev; |
4520 | INIT_LIST_HEAD(&bond->vlan_list); | |
4521 | ||
4522 | /* Initialize the device entry points */ | |
181470fc | 4523 | ether_setup(bond_dev); |
eb7cc59a | 4524 | bond_dev->netdev_ops = &bond_netdev_ops; |
8531c5ff | 4525 | bond_dev->ethtool_ops = &bond_ethtool_ops; |
169a3e66 | 4526 | bond_set_mode_ops(bond, bond->params.mode); |
1da177e4 | 4527 | |
9e71626c | 4528 | bond_dev->destructor = free_netdev; |
1da177e4 LT |
4529 | |
4530 | /* Initialize the device options */ | |
4531 | bond_dev->tx_queue_len = 0; | |
4532 | bond_dev->flags |= IFF_MASTER|IFF_MULTICAST; | |
0b680e75 | 4533 | bond_dev->priv_flags |= IFF_BONDING; |
181470fc SH |
4534 | bond_dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; |
4535 | ||
6cf3f41e JV |
4536 | if (bond->params.arp_interval) |
4537 | bond_dev->priv_flags |= IFF_MASTER_ARPMON; | |
1da177e4 LT |
4538 | |
4539 | /* At first, we block adding VLANs. That's the only way to | |
4540 | * prevent problems that occur when adding VLANs over an | |
4541 | * empty bond. The block will be removed once non-challenged | |
4542 | * slaves are enslaved. | |
4543 | */ | |
4544 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; | |
4545 | ||
932ff279 | 4546 | /* don't acquire bond device's netif_tx_lock when |
1da177e4 LT |
4547 | * transmitting */ |
4548 | bond_dev->features |= NETIF_F_LLTX; | |
4549 | ||
4550 | /* By default, we declare the bond to be fully | |
4551 | * VLAN hardware accelerated capable. Special | |
4552 | * care is taken in the various xmit functions | |
4553 | * when there are slaves that are not hw accel | |
4554 | * capable | |
4555 | */ | |
1da177e4 LT |
4556 | bond_dev->features |= (NETIF_F_HW_VLAN_TX | |
4557 | NETIF_F_HW_VLAN_RX | | |
4558 | NETIF_F_HW_VLAN_FILTER); | |
4559 | ||
1da177e4 LT |
4560 | } |
4561 | ||
fdaea7a9 JV |
4562 | static void bond_work_cancel_all(struct bonding *bond) |
4563 | { | |
4564 | write_lock_bh(&bond->lock); | |
4565 | bond->kill_timers = 1; | |
4566 | write_unlock_bh(&bond->lock); | |
4567 | ||
4568 | if (bond->params.miimon && delayed_work_pending(&bond->mii_work)) | |
4569 | cancel_delayed_work(&bond->mii_work); | |
4570 | ||
4571 | if (bond->params.arp_interval && delayed_work_pending(&bond->arp_work)) | |
4572 | cancel_delayed_work(&bond->arp_work); | |
4573 | ||
4574 | if (bond->params.mode == BOND_MODE_ALB && | |
4575 | delayed_work_pending(&bond->alb_work)) | |
4576 | cancel_delayed_work(&bond->alb_work); | |
4577 | ||
4578 | if (bond->params.mode == BOND_MODE_8023AD && | |
4579 | delayed_work_pending(&bond->ad_work)) | |
4580 | cancel_delayed_work(&bond->ad_work); | |
4581 | } | |
4582 | ||
c67dfb29 EB |
4583 | /* |
4584 | * Destroy a bonding device. | |
4585 | * Must be under rtnl_lock when this function is called. | |
4586 | */ | |
4587 | static void bond_uninit(struct net_device *bond_dev) | |
a434e43f | 4588 | { |
454d7c9b | 4589 | struct bonding *bond = netdev_priv(bond_dev); |
a434e43f | 4590 | |
c67dfb29 EB |
4591 | /* Release the bonded slaves */ |
4592 | bond_release_all(bond_dev); | |
4593 | ||
a434e43f JV |
4594 | list_del(&bond->bond_list); |
4595 | ||
4596 | bond_work_cancel_all(bond); | |
4597 | ||
a434e43f | 4598 | bond_remove_proc_entry(bond); |
c67dfb29 EB |
4599 | |
4600 | if (bond->wq) | |
4601 | destroy_workqueue(bond->wq); | |
4602 | ||
4603 | netif_addr_lock_bh(bond_dev); | |
4604 | bond_mc_list_destroy(bond); | |
4605 | netif_addr_unlock_bh(bond_dev); | |
a434e43f JV |
4606 | } |
4607 | ||
1da177e4 LT |
4608 | /*------------------------- Module initialization ---------------------------*/ |
4609 | ||
4610 | /* | |
4611 | * Convert string input module parms. Accept either the | |
ece95f7f JV |
4612 | * number of the mode or its string name. A bit complicated because |
4613 | * some mode names are substrings of other names, and calls from sysfs | |
4614 | * may have whitespace in the name (trailing newlines, for example). | |
1da177e4 | 4615 | */ |
325dcf7a | 4616 | int bond_parse_parm(const char *buf, const struct bond_parm_tbl *tbl) |
1da177e4 | 4617 | { |
54b87323 | 4618 | int modeint = -1, i, rv; |
a42e534f | 4619 | char *p, modestr[BOND_MAX_MODENAME_LEN + 1] = { 0, }; |
ece95f7f | 4620 | |
a42e534f JV |
4621 | for (p = (char *)buf; *p; p++) |
4622 | if (!(isdigit(*p) || isspace(*p))) | |
4623 | break; | |
4624 | ||
4625 | if (*p) | |
ece95f7f | 4626 | rv = sscanf(buf, "%20s", modestr); |
a42e534f | 4627 | else |
54b87323 | 4628 | rv = sscanf(buf, "%d", &modeint); |
a42e534f JV |
4629 | |
4630 | if (!rv) | |
4631 | return -1; | |
1da177e4 LT |
4632 | |
4633 | for (i = 0; tbl[i].modename; i++) { | |
54b87323 | 4634 | if (modeint == tbl[i].mode) |
ece95f7f JV |
4635 | return tbl[i].mode; |
4636 | if (strcmp(modestr, tbl[i].modename) == 0) | |
1da177e4 | 4637 | return tbl[i].mode; |
1da177e4 LT |
4638 | } |
4639 | ||
4640 | return -1; | |
4641 | } | |
4642 | ||
4643 | static int bond_check_params(struct bond_params *params) | |
4644 | { | |
a549952a | 4645 | int arp_validate_value, fail_over_mac_value, primary_reselect_value; |
f5b2b966 | 4646 | |
1da177e4 LT |
4647 | /* |
4648 | * Convert string parameters. | |
4649 | */ | |
4650 | if (mode) { | |
4651 | bond_mode = bond_parse_parm(mode, bond_mode_tbl); | |
4652 | if (bond_mode == -1) { | |
3d632c3f | 4653 | pr_err(DRV_NAME |
1da177e4 LT |
4654 | ": Error: Invalid bonding mode \"%s\"\n", |
4655 | mode == NULL ? "NULL" : mode); | |
4656 | return -EINVAL; | |
4657 | } | |
4658 | } | |
4659 | ||
169a3e66 JV |
4660 | if (xmit_hash_policy) { |
4661 | if ((bond_mode != BOND_MODE_XOR) && | |
4662 | (bond_mode != BOND_MODE_8023AD)) { | |
3d632c3f | 4663 | pr_info(DRV_NAME |
3c6aaa24 NP |
4664 | ": xmit_hash_policy param is irrelevant in" |
4665 | " mode %s\n", | |
169a3e66 JV |
4666 | bond_mode_name(bond_mode)); |
4667 | } else { | |
4668 | xmit_hashtype = bond_parse_parm(xmit_hash_policy, | |
4669 | xmit_hashtype_tbl); | |
4670 | if (xmit_hashtype == -1) { | |
3d632c3f SH |
4671 | pr_err(DRV_NAME |
4672 | ": Error: Invalid xmit_hash_policy \"%s\"\n", | |
4673 | xmit_hash_policy == NULL ? "NULL" : | |
169a3e66 JV |
4674 | xmit_hash_policy); |
4675 | return -EINVAL; | |
4676 | } | |
4677 | } | |
4678 | } | |
4679 | ||
1da177e4 LT |
4680 | if (lacp_rate) { |
4681 | if (bond_mode != BOND_MODE_8023AD) { | |
3d632c3f | 4682 | pr_info(DRV_NAME |
1da177e4 LT |
4683 | ": lacp_rate param is irrelevant in mode %s\n", |
4684 | bond_mode_name(bond_mode)); | |
4685 | } else { | |
4686 | lacp_fast = bond_parse_parm(lacp_rate, bond_lacp_tbl); | |
4687 | if (lacp_fast == -1) { | |
3d632c3f | 4688 | pr_err(DRV_NAME |
1da177e4 LT |
4689 | ": Error: Invalid lacp rate \"%s\"\n", |
4690 | lacp_rate == NULL ? "NULL" : lacp_rate); | |
4691 | return -EINVAL; | |
4692 | } | |
4693 | } | |
4694 | } | |
4695 | ||
fd989c83 JV |
4696 | if (ad_select) { |
4697 | params->ad_select = bond_parse_parm(ad_select, ad_select_tbl); | |
4698 | if (params->ad_select == -1) { | |
3d632c3f | 4699 | pr_err(DRV_NAME |
fd989c83 JV |
4700 | ": Error: Invalid ad_select \"%s\"\n", |
4701 | ad_select == NULL ? "NULL" : ad_select); | |
4702 | return -EINVAL; | |
4703 | } | |
4704 | ||
4705 | if (bond_mode != BOND_MODE_8023AD) { | |
3d632c3f | 4706 | pr_warning(DRV_NAME |
fd989c83 JV |
4707 | ": ad_select param only affects 802.3ad mode\n"); |
4708 | } | |
4709 | } else { | |
4710 | params->ad_select = BOND_AD_STABLE; | |
4711 | } | |
4712 | ||
f5841306 | 4713 | if (max_bonds < 0) { |
3d632c3f | 4714 | pr_warning(DRV_NAME |
1da177e4 | 4715 | ": Warning: max_bonds (%d) not in range %d-%d, so it " |
4e0952c7 | 4716 | "was reset to BOND_DEFAULT_MAX_BONDS (%d)\n", |
b8a9787e | 4717 | max_bonds, 0, INT_MAX, BOND_DEFAULT_MAX_BONDS); |
1da177e4 LT |
4718 | max_bonds = BOND_DEFAULT_MAX_BONDS; |
4719 | } | |
4720 | ||
4721 | if (miimon < 0) { | |
3d632c3f | 4722 | pr_warning(DRV_NAME |
1da177e4 LT |
4723 | ": Warning: miimon module parameter (%d), " |
4724 | "not in range 0-%d, so it was reset to %d\n", | |
4725 | miimon, INT_MAX, BOND_LINK_MON_INTERV); | |
4726 | miimon = BOND_LINK_MON_INTERV; | |
4727 | } | |
4728 | ||
4729 | if (updelay < 0) { | |
3d632c3f | 4730 | pr_warning(DRV_NAME |
1da177e4 LT |
4731 | ": Warning: updelay module parameter (%d), " |
4732 | "not in range 0-%d, so it was reset to 0\n", | |
4733 | updelay, INT_MAX); | |
4734 | updelay = 0; | |
4735 | } | |
4736 | ||
4737 | if (downdelay < 0) { | |
3d632c3f | 4738 | pr_warning(DRV_NAME |
1da177e4 LT |
4739 | ": Warning: downdelay module parameter (%d), " |
4740 | "not in range 0-%d, so it was reset to 0\n", | |
4741 | downdelay, INT_MAX); | |
4742 | downdelay = 0; | |
4743 | } | |
4744 | ||
4745 | if ((use_carrier != 0) && (use_carrier != 1)) { | |
3d632c3f | 4746 | pr_warning(DRV_NAME |
1da177e4 LT |
4747 | ": Warning: use_carrier module parameter (%d), " |
4748 | "not of valid value (0/1), so it was set to 1\n", | |
4749 | use_carrier); | |
4750 | use_carrier = 1; | |
4751 | } | |
4752 | ||
7893b249 | 4753 | if (num_grat_arp < 0 || num_grat_arp > 255) { |
3d632c3f | 4754 | pr_warning(DRV_NAME |
7893b249 MS |
4755 | ": Warning: num_grat_arp (%d) not in range 0-255 so it " |
4756 | "was reset to 1 \n", num_grat_arp); | |
4757 | num_grat_arp = 1; | |
4758 | } | |
4759 | ||
305d552a | 4760 | if (num_unsol_na < 0 || num_unsol_na > 255) { |
3d632c3f | 4761 | pr_warning(DRV_NAME |
305d552a BH |
4762 | ": Warning: num_unsol_na (%d) not in range 0-255 so it " |
4763 | "was reset to 1 \n", num_unsol_na); | |
4764 | num_unsol_na = 1; | |
4765 | } | |
4766 | ||
1da177e4 LT |
4767 | /* reset values for 802.3ad */ |
4768 | if (bond_mode == BOND_MODE_8023AD) { | |
4769 | if (!miimon) { | |
3d632c3f | 4770 | pr_warning(DRV_NAME |
1da177e4 LT |
4771 | ": Warning: miimon must be specified, " |
4772 | "otherwise bonding will not detect link " | |
4773 | "failure, speed and duplex which are " | |
4774 | "essential for 802.3ad operation\n"); | |
3d632c3f | 4775 | pr_warning("Forcing miimon to 100msec\n"); |
1da177e4 LT |
4776 | miimon = 100; |
4777 | } | |
4778 | } | |
4779 | ||
4780 | /* reset values for TLB/ALB */ | |
4781 | if ((bond_mode == BOND_MODE_TLB) || | |
4782 | (bond_mode == BOND_MODE_ALB)) { | |
4783 | if (!miimon) { | |
3d632c3f | 4784 | pr_warning(DRV_NAME |
1da177e4 LT |
4785 | ": Warning: miimon must be specified, " |
4786 | "otherwise bonding will not detect link " | |
4787 | "failure and link speed which are essential " | |
4788 | "for TLB/ALB load balancing\n"); | |
3d632c3f | 4789 | pr_warning("Forcing miimon to 100msec\n"); |
1da177e4 LT |
4790 | miimon = 100; |
4791 | } | |
4792 | } | |
4793 | ||
4794 | if (bond_mode == BOND_MODE_ALB) { | |
e5e2a8fd | 4795 | pr_notice(DRV_NAME |
1da177e4 LT |
4796 | ": In ALB mode you might experience client " |
4797 | "disconnections upon reconnection of a link if the " | |
4798 | "bonding module updelay parameter (%d msec) is " | |
4799 | "incompatible with the forwarding delay time of the " | |
4800 | "switch\n", | |
4801 | updelay); | |
4802 | } | |
4803 | ||
4804 | if (!miimon) { | |
4805 | if (updelay || downdelay) { | |
4806 | /* just warn the user the up/down delay will have | |
4807 | * no effect since miimon is zero... | |
4808 | */ | |
3d632c3f | 4809 | pr_warning(DRV_NAME |
1da177e4 LT |
4810 | ": Warning: miimon module parameter not set " |
4811 | "and updelay (%d) or downdelay (%d) module " | |
4812 | "parameter is set; updelay and downdelay have " | |
4813 | "no effect unless miimon is set\n", | |
4814 | updelay, downdelay); | |
4815 | } | |
4816 | } else { | |
4817 | /* don't allow arp monitoring */ | |
4818 | if (arp_interval) { | |
3d632c3f | 4819 | pr_warning(DRV_NAME |
1da177e4 LT |
4820 | ": Warning: miimon (%d) and arp_interval (%d) " |
4821 | "can't be used simultaneously, disabling ARP " | |
4822 | "monitoring\n", | |
4823 | miimon, arp_interval); | |
4824 | arp_interval = 0; | |
4825 | } | |
4826 | ||
4827 | if ((updelay % miimon) != 0) { | |
3d632c3f | 4828 | pr_warning(DRV_NAME |
1da177e4 LT |
4829 | ": Warning: updelay (%d) is not a multiple " |
4830 | "of miimon (%d), updelay rounded to %d ms\n", | |
4831 | updelay, miimon, (updelay / miimon) * miimon); | |
4832 | } | |
4833 | ||
4834 | updelay /= miimon; | |
4835 | ||
4836 | if ((downdelay % miimon) != 0) { | |
3d632c3f | 4837 | pr_warning(DRV_NAME |
1da177e4 LT |
4838 | ": Warning: downdelay (%d) is not a multiple " |
4839 | "of miimon (%d), downdelay rounded to %d ms\n", | |
4840 | downdelay, miimon, | |
4841 | (downdelay / miimon) * miimon); | |
4842 | } | |
4843 | ||
4844 | downdelay /= miimon; | |
4845 | } | |
4846 | ||
4847 | if (arp_interval < 0) { | |
3d632c3f | 4848 | pr_warning(DRV_NAME |
1da177e4 LT |
4849 | ": Warning: arp_interval module parameter (%d) " |
4850 | ", not in range 0-%d, so it was reset to %d\n", | |
4851 | arp_interval, INT_MAX, BOND_LINK_ARP_INTERV); | |
4852 | arp_interval = BOND_LINK_ARP_INTERV; | |
4853 | } | |
4854 | ||
4855 | for (arp_ip_count = 0; | |
4856 | (arp_ip_count < BOND_MAX_ARP_TARGETS) && arp_ip_target[arp_ip_count]; | |
4857 | arp_ip_count++) { | |
4858 | /* not complete check, but should be good enough to | |
4859 | catch mistakes */ | |
4860 | if (!isdigit(arp_ip_target[arp_ip_count][0])) { | |
3d632c3f | 4861 | pr_warning(DRV_NAME |
1da177e4 LT |
4862 | ": Warning: bad arp_ip_target module parameter " |
4863 | "(%s), ARP monitoring will not be performed\n", | |
4864 | arp_ip_target[arp_ip_count]); | |
4865 | arp_interval = 0; | |
4866 | } else { | |
d3bb52b0 | 4867 | __be32 ip = in_aton(arp_ip_target[arp_ip_count]); |
1da177e4 LT |
4868 | arp_target[arp_ip_count] = ip; |
4869 | } | |
4870 | } | |
4871 | ||
4872 | if (arp_interval && !arp_ip_count) { | |
4873 | /* don't allow arping if no arp_ip_target given... */ | |
3d632c3f | 4874 | pr_warning(DRV_NAME |
1da177e4 LT |
4875 | ": Warning: arp_interval module parameter (%d) " |
4876 | "specified without providing an arp_ip_target " | |
4877 | "parameter, arp_interval was reset to 0\n", | |
4878 | arp_interval); | |
4879 | arp_interval = 0; | |
4880 | } | |
4881 | ||
f5b2b966 JV |
4882 | if (arp_validate) { |
4883 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) { | |
3d632c3f SH |
4884 | pr_err(DRV_NAME |
4885 | ": arp_validate only supported in active-backup mode\n"); | |
f5b2b966 JV |
4886 | return -EINVAL; |
4887 | } | |
4888 | if (!arp_interval) { | |
3d632c3f | 4889 | pr_err(DRV_NAME |
f5b2b966 JV |
4890 | ": arp_validate requires arp_interval\n"); |
4891 | return -EINVAL; | |
4892 | } | |
4893 | ||
4894 | arp_validate_value = bond_parse_parm(arp_validate, | |
4895 | arp_validate_tbl); | |
4896 | if (arp_validate_value == -1) { | |
3d632c3f | 4897 | pr_err(DRV_NAME |
f5b2b966 JV |
4898 | ": Error: invalid arp_validate \"%s\"\n", |
4899 | arp_validate == NULL ? "NULL" : arp_validate); | |
4900 | return -EINVAL; | |
4901 | } | |
4902 | } else | |
4903 | arp_validate_value = 0; | |
4904 | ||
1da177e4 | 4905 | if (miimon) { |
3d632c3f | 4906 | pr_info(DRV_NAME |
1da177e4 LT |
4907 | ": MII link monitoring set to %d ms\n", |
4908 | miimon); | |
4909 | } else if (arp_interval) { | |
4910 | int i; | |
4911 | ||
3d632c3f SH |
4912 | pr_info(DRV_NAME ": ARP monitoring set to %d ms," |
4913 | " validate %s, with %d target(s):", | |
f5b2b966 JV |
4914 | arp_interval, |
4915 | arp_validate_tbl[arp_validate_value].modename, | |
4916 | arp_ip_count); | |
1da177e4 LT |
4917 | |
4918 | for (i = 0; i < arp_ip_count; i++) | |
e5e2a8fd | 4919 | pr_info(" %s", arp_ip_target[i]); |
1da177e4 | 4920 | |
e5e2a8fd | 4921 | pr_info("\n"); |
1da177e4 | 4922 | |
b8a9787e | 4923 | } else if (max_bonds) { |
1da177e4 LT |
4924 | /* miimon and arp_interval not set, we need one so things |
4925 | * work as expected, see bonding.txt for details | |
4926 | */ | |
3d632c3f | 4927 | pr_warning(DRV_NAME |
1da177e4 LT |
4928 | ": Warning: either miimon or arp_interval and " |
4929 | "arp_ip_target module parameters must be specified, " | |
4930 | "otherwise bonding will not detect link failures! see " | |
4931 | "bonding.txt for details.\n"); | |
4932 | } | |
4933 | ||
4934 | if (primary && !USES_PRIMARY(bond_mode)) { | |
4935 | /* currently, using a primary only makes sense | |
4936 | * in active backup, TLB or ALB modes | |
4937 | */ | |
3d632c3f | 4938 | pr_warning(DRV_NAME |
1da177e4 LT |
4939 | ": Warning: %s primary device specified but has no " |
4940 | "effect in %s mode\n", | |
4941 | primary, bond_mode_name(bond_mode)); | |
4942 | primary = NULL; | |
4943 | } | |
4944 | ||
a549952a JP |
4945 | if (primary && primary_reselect) { |
4946 | primary_reselect_value = bond_parse_parm(primary_reselect, | |
4947 | pri_reselect_tbl); | |
4948 | if (primary_reselect_value == -1) { | |
4949 | pr_err(DRV_NAME | |
4950 | ": Error: Invalid primary_reselect \"%s\"\n", | |
4951 | primary_reselect == | |
4952 | NULL ? "NULL" : primary_reselect); | |
4953 | return -EINVAL; | |
4954 | } | |
4955 | } else { | |
4956 | primary_reselect_value = BOND_PRI_RESELECT_ALWAYS; | |
4957 | } | |
4958 | ||
3915c1e8 JV |
4959 | if (fail_over_mac) { |
4960 | fail_over_mac_value = bond_parse_parm(fail_over_mac, | |
4961 | fail_over_mac_tbl); | |
4962 | if (fail_over_mac_value == -1) { | |
3d632c3f | 4963 | pr_err(DRV_NAME |
3915c1e8 JV |
4964 | ": Error: invalid fail_over_mac \"%s\"\n", |
4965 | arp_validate == NULL ? "NULL" : arp_validate); | |
4966 | return -EINVAL; | |
4967 | } | |
4968 | ||
4969 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) | |
3d632c3f | 4970 | pr_warning(DRV_NAME |
3915c1e8 JV |
4971 | ": Warning: fail_over_mac only affects " |
4972 | "active-backup mode.\n"); | |
4973 | } else { | |
4974 | fail_over_mac_value = BOND_FOM_NONE; | |
4975 | } | |
dd957c57 | 4976 | |
1da177e4 LT |
4977 | /* fill params struct with the proper values */ |
4978 | params->mode = bond_mode; | |
169a3e66 | 4979 | params->xmit_policy = xmit_hashtype; |
1da177e4 | 4980 | params->miimon = miimon; |
7893b249 | 4981 | params->num_grat_arp = num_grat_arp; |
305d552a | 4982 | params->num_unsol_na = num_unsol_na; |
1da177e4 | 4983 | params->arp_interval = arp_interval; |
f5b2b966 | 4984 | params->arp_validate = arp_validate_value; |
1da177e4 LT |
4985 | params->updelay = updelay; |
4986 | params->downdelay = downdelay; | |
4987 | params->use_carrier = use_carrier; | |
4988 | params->lacp_fast = lacp_fast; | |
4989 | params->primary[0] = 0; | |
a549952a | 4990 | params->primary_reselect = primary_reselect_value; |
3915c1e8 | 4991 | params->fail_over_mac = fail_over_mac_value; |
1da177e4 LT |
4992 | |
4993 | if (primary) { | |
4994 | strncpy(params->primary, primary, IFNAMSIZ); | |
4995 | params->primary[IFNAMSIZ - 1] = 0; | |
4996 | } | |
4997 | ||
4998 | memcpy(params->arp_targets, arp_target, sizeof(arp_target)); | |
4999 | ||
5000 | return 0; | |
5001 | } | |
5002 | ||
0daa2303 | 5003 | static struct lock_class_key bonding_netdev_xmit_lock_key; |
cf508b12 | 5004 | static struct lock_class_key bonding_netdev_addr_lock_key; |
0daa2303 | 5005 | |
e8a0464c DM |
5006 | static void bond_set_lockdep_class_one(struct net_device *dev, |
5007 | struct netdev_queue *txq, | |
5008 | void *_unused) | |
c773e847 DM |
5009 | { |
5010 | lockdep_set_class(&txq->_xmit_lock, | |
5011 | &bonding_netdev_xmit_lock_key); | |
5012 | } | |
5013 | ||
5014 | static void bond_set_lockdep_class(struct net_device *dev) | |
5015 | { | |
cf508b12 DM |
5016 | lockdep_set_class(&dev->addr_list_lock, |
5017 | &bonding_netdev_addr_lock_key); | |
e8a0464c | 5018 | netdev_for_each_tx_queue(dev, bond_set_lockdep_class_one, NULL); |
c773e847 DM |
5019 | } |
5020 | ||
181470fc SH |
5021 | /* |
5022 | * Called from registration process | |
5023 | */ | |
5024 | static int bond_init(struct net_device *bond_dev) | |
5025 | { | |
5026 | struct bonding *bond = netdev_priv(bond_dev); | |
ec87fd3b | 5027 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); |
181470fc SH |
5028 | |
5029 | pr_debug("Begin bond_init for %s\n", bond_dev->name); | |
5030 | ||
5031 | bond->wq = create_singlethread_workqueue(bond_dev->name); | |
5032 | if (!bond->wq) | |
5033 | return -ENOMEM; | |
5034 | ||
5035 | bond_set_lockdep_class(bond_dev); | |
5036 | ||
5037 | netif_carrier_off(bond_dev); | |
5038 | ||
5039 | bond_create_proc_entry(bond); | |
ec87fd3b | 5040 | list_add_tail(&bond->bond_list, &bn->dev_list); |
181470fc | 5041 | |
6151b3d4 | 5042 | bond_prepare_sysfs_group(bond); |
181470fc SH |
5043 | return 0; |
5044 | } | |
5045 | ||
88ead977 EB |
5046 | static int bond_validate(struct nlattr *tb[], struct nlattr *data[]) |
5047 | { | |
5048 | if (tb[IFLA_ADDRESS]) { | |
5049 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
5050 | return -EINVAL; | |
5051 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
5052 | return -EADDRNOTAVAIL; | |
5053 | } | |
5054 | return 0; | |
5055 | } | |
5056 | ||
5057 | static struct rtnl_link_ops bond_link_ops __read_mostly = { | |
5058 | .kind = "bond", | |
5059 | .setup = bond_setup, | |
5060 | .validate = bond_validate, | |
5061 | }; | |
5062 | ||
dfe60397 | 5063 | /* Create a new bond based on the specified name and bonding parameters. |
e4b91c48 | 5064 | * If name is NULL, obtain a suitable "bond%d" name for us. |
dfe60397 MW |
5065 | * Caller must NOT hold rtnl_lock; we need to release it here before we |
5066 | * set up our sysfs entries. | |
5067 | */ | |
ec87fd3b | 5068 | int bond_create(struct net *net, const char *name) |
dfe60397 MW |
5069 | { |
5070 | struct net_device *bond_dev; | |
5071 | int res; | |
5072 | ||
5073 | rtnl_lock(); | |
027ea041 | 5074 | |
e4b91c48 | 5075 | bond_dev = alloc_netdev(sizeof(struct bonding), name ? name : "", |
181470fc | 5076 | bond_setup); |
dfe60397 | 5077 | if (!bond_dev) { |
3d632c3f | 5078 | pr_err(DRV_NAME ": %s: eek! can't alloc netdev!\n", |
dfe60397 MW |
5079 | name); |
5080 | res = -ENOMEM; | |
30c15ba9 | 5081 | goto out; |
dfe60397 MW |
5082 | } |
5083 | ||
ec87fd3b | 5084 | dev_net_set(bond_dev, net); |
88ead977 EB |
5085 | bond_dev->rtnl_link_ops = &bond_link_ops; |
5086 | ||
e4b91c48 JV |
5087 | if (!name) { |
5088 | res = dev_alloc_name(bond_dev, "bond%d"); | |
5089 | if (res < 0) | |
5090 | goto out_netdev; | |
5091 | } | |
5092 | ||
dfe60397 | 5093 | res = register_netdevice(bond_dev); |
0daa2303 | 5094 | |
30c15ba9 | 5095 | out: |
7e083840 | 5096 | rtnl_unlock(); |
30c15ba9 | 5097 | return res; |
dfe60397 MW |
5098 | out_netdev: |
5099 | free_netdev(bond_dev); | |
30c15ba9 | 5100 | goto out; |
dfe60397 MW |
5101 | } |
5102 | ||
ec87fd3b EB |
5103 | static int bond_net_init(struct net *net) |
5104 | { | |
5105 | struct bond_net *bn; | |
5106 | int err; | |
5107 | ||
5108 | err = -ENOMEM; | |
5109 | bn = kzalloc(sizeof(struct bond_net), GFP_KERNEL); | |
5110 | if (bn == NULL) | |
5111 | goto out; | |
5112 | ||
5113 | bn->net = net; | |
5114 | INIT_LIST_HEAD(&bn->dev_list); | |
5115 | ||
5116 | err = net_assign_generic(net, bond_net_id, bn); | |
5117 | if (err) | |
5118 | goto out_free; | |
5119 | ||
5120 | bond_create_proc_dir(bn); | |
5121 | out: | |
5122 | return err; | |
5123 | out_free: | |
5124 | kfree(bn); | |
5125 | goto out; | |
5126 | } | |
5127 | ||
5128 | static void bond_net_exit(struct net *net) | |
5129 | { | |
5130 | struct bond_net *bn; | |
5131 | ||
5132 | bn = net_generic(net, bond_net_id); | |
5133 | ||
5134 | bond_destroy_proc_dir(bn); | |
5135 | kfree(bn); | |
5136 | } | |
5137 | ||
5138 | static struct pernet_operations bond_net_ops = { | |
5139 | .init = bond_net_init, | |
5140 | .exit = bond_net_exit, | |
5141 | }; | |
5142 | ||
1da177e4 LT |
5143 | static int __init bonding_init(void) |
5144 | { | |
1da177e4 LT |
5145 | int i; |
5146 | int res; | |
5147 | ||
3d632c3f | 5148 | pr_info("%s", version); |
1da177e4 | 5149 | |
dfe60397 | 5150 | res = bond_check_params(&bonding_defaults); |
3d632c3f | 5151 | if (res) |
dfe60397 | 5152 | goto out; |
1da177e4 | 5153 | |
ec87fd3b EB |
5154 | res = register_pernet_gen_subsys(&bond_net_id, &bond_net_ops); |
5155 | if (res) | |
5156 | goto out; | |
027ea041 | 5157 | |
88ead977 EB |
5158 | res = rtnl_link_register(&bond_link_ops); |
5159 | if (res) | |
5160 | goto err; | |
5161 | ||
1da177e4 | 5162 | for (i = 0; i < max_bonds; i++) { |
ec87fd3b | 5163 | res = bond_create(&init_net, NULL); |
dfe60397 MW |
5164 | if (res) |
5165 | goto err; | |
1da177e4 LT |
5166 | } |
5167 | ||
b76cdba9 MW |
5168 | res = bond_create_sysfs(); |
5169 | if (res) | |
5170 | goto err; | |
5171 | ||
1da177e4 | 5172 | register_netdevice_notifier(&bond_netdev_notifier); |
c3ade5ca | 5173 | register_inetaddr_notifier(&bond_inetaddr_notifier); |
305d552a | 5174 | bond_register_ipv6_notifier(); |
dfe60397 | 5175 | out: |
1da177e4 | 5176 | return res; |
88ead977 EB |
5177 | err: |
5178 | rtnl_link_unregister(&bond_link_ops); | |
ec87fd3b | 5179 | unregister_pernet_gen_subsys(bond_net_id, &bond_net_ops); |
88ead977 | 5180 | goto out; |
dfe60397 | 5181 | |
1da177e4 LT |
5182 | } |
5183 | ||
5184 | static void __exit bonding_exit(void) | |
5185 | { | |
5186 | unregister_netdevice_notifier(&bond_netdev_notifier); | |
c3ade5ca | 5187 | unregister_inetaddr_notifier(&bond_inetaddr_notifier); |
305d552a | 5188 | bond_unregister_ipv6_notifier(); |
1da177e4 | 5189 | |
ae68c398 PE |
5190 | bond_destroy_sysfs(); |
5191 | ||
88ead977 | 5192 | rtnl_link_unregister(&bond_link_ops); |
ec87fd3b | 5193 | unregister_pernet_gen_subsys(bond_net_id, &bond_net_ops); |
1da177e4 LT |
5194 | } |
5195 | ||
5196 | module_init(bonding_init); | |
5197 | module_exit(bonding_exit); | |
5198 | MODULE_LICENSE("GPL"); | |
5199 | MODULE_VERSION(DRV_VERSION); | |
5200 | MODULE_DESCRIPTION(DRV_DESCRIPTION ", v" DRV_VERSION); | |
5201 | MODULE_AUTHOR("Thomas Davis, tadavis@lbl.gov and many others"); | |
88ead977 | 5202 | MODULE_ALIAS_RTNL_LINK("bond"); |