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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> |
1da177e4 LT |
78 | #include "bonding.h" |
79 | #include "bond_3ad.h" | |
80 | #include "bond_alb.h" | |
81 | ||
82 | /*---------------------------- Module parameters ----------------------------*/ | |
83 | ||
84 | /* monitor all links that often (in milliseconds). <=0 disables monitoring */ | |
85 | #define BOND_LINK_MON_INTERV 0 | |
86 | #define BOND_LINK_ARP_INTERV 0 | |
87 | ||
88 | static int max_bonds = BOND_DEFAULT_MAX_BONDS; | |
7893b249 | 89 | static int num_grat_arp = 1; |
305d552a | 90 | static int num_unsol_na = 1; |
1da177e4 | 91 | static int miimon = BOND_LINK_MON_INTERV; |
3d632c3f SH |
92 | static int updelay; |
93 | static int downdelay; | |
1da177e4 | 94 | static int use_carrier = 1; |
3d632c3f SH |
95 | static char *mode; |
96 | static char *primary; | |
97 | static char *lacp_rate; | |
98 | static char *ad_select; | |
99 | static char *xmit_hash_policy; | |
1da177e4 | 100 | static int arp_interval = BOND_LINK_ARP_INTERV; |
3d632c3f SH |
101 | static char *arp_ip_target[BOND_MAX_ARP_TARGETS]; |
102 | static char *arp_validate; | |
103 | static char *fail_over_mac; | |
d2991f75 | 104 | static struct bond_params bonding_defaults; |
1da177e4 LT |
105 | |
106 | module_param(max_bonds, int, 0); | |
107 | MODULE_PARM_DESC(max_bonds, "Max number of bonded devices"); | |
7893b249 MS |
108 | module_param(num_grat_arp, int, 0644); |
109 | MODULE_PARM_DESC(num_grat_arp, "Number of gratuitous ARP packets to send on failover event"); | |
305d552a BH |
110 | module_param(num_unsol_na, int, 0644); |
111 | MODULE_PARM_DESC(num_unsol_na, "Number of unsolicited IPv6 Neighbor Advertisements packets to send on failover event"); | |
1da177e4 LT |
112 | module_param(miimon, int, 0); |
113 | MODULE_PARM_DESC(miimon, "Link check interval in milliseconds"); | |
114 | module_param(updelay, int, 0); | |
115 | MODULE_PARM_DESC(updelay, "Delay before considering link up, in milliseconds"); | |
116 | module_param(downdelay, int, 0); | |
2ac47660 MW |
117 | MODULE_PARM_DESC(downdelay, "Delay before considering link down, " |
118 | "in milliseconds"); | |
1da177e4 | 119 | module_param(use_carrier, int, 0); |
2ac47660 MW |
120 | MODULE_PARM_DESC(use_carrier, "Use netif_carrier_ok (vs MII ioctls) in miimon; " |
121 | "0 for off, 1 for on (default)"); | |
1da177e4 | 122 | module_param(mode, charp, 0); |
2ac47660 MW |
123 | MODULE_PARM_DESC(mode, "Mode of operation : 0 for balance-rr, " |
124 | "1 for active-backup, 2 for balance-xor, " | |
125 | "3 for broadcast, 4 for 802.3ad, 5 for balance-tlb, " | |
126 | "6 for balance-alb"); | |
1da177e4 LT |
127 | module_param(primary, charp, 0); |
128 | MODULE_PARM_DESC(primary, "Primary network device to use"); | |
129 | module_param(lacp_rate, charp, 0); | |
2ac47660 MW |
130 | MODULE_PARM_DESC(lacp_rate, "LACPDU tx rate to request from 802.3ad partner " |
131 | "(slow/fast)"); | |
fd989c83 JV |
132 | module_param(ad_select, charp, 0); |
133 | MODULE_PARM_DESC(ad_select, "803.ad aggregation selection logic: stable (0, default), bandwidth (1), count (2)"); | |
169a3e66 | 134 | module_param(xmit_hash_policy, charp, 0); |
2ac47660 MW |
135 | MODULE_PARM_DESC(xmit_hash_policy, "XOR hashing method: 0 for layer 2 (default)" |
136 | ", 1 for layer 3+4"); | |
1da177e4 LT |
137 | module_param(arp_interval, int, 0); |
138 | MODULE_PARM_DESC(arp_interval, "arp interval in milliseconds"); | |
139 | module_param_array(arp_ip_target, charp, NULL, 0); | |
140 | MODULE_PARM_DESC(arp_ip_target, "arp targets in n.n.n.n form"); | |
f5b2b966 JV |
141 | module_param(arp_validate, charp, 0); |
142 | MODULE_PARM_DESC(arp_validate, "validate src/dst of ARP probes: none (default), active, backup or all"); | |
3915c1e8 JV |
143 | module_param(fail_over_mac, charp, 0); |
144 | 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 |
145 | |
146 | /*----------------------------- Global variables ----------------------------*/ | |
147 | ||
f71e1309 | 148 | static const char * const version = |
1da177e4 LT |
149 | DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n"; |
150 | ||
12479f9a | 151 | LIST_HEAD(bond_dev_list); |
1da177e4 LT |
152 | |
153 | #ifdef CONFIG_PROC_FS | |
3d632c3f | 154 | static struct proc_dir_entry *bond_proc_dir; |
1da177e4 LT |
155 | #endif |
156 | ||
3d632c3f SH |
157 | static __be32 arp_target[BOND_MAX_ARP_TARGETS]; |
158 | static int arp_ip_count; | |
1da177e4 | 159 | static int bond_mode = BOND_MODE_ROUNDROBIN; |
3d632c3f SH |
160 | static int xmit_hashtype = BOND_XMIT_POLICY_LAYER2; |
161 | static int lacp_fast; | |
217df670 | 162 | |
1da177e4 | 163 | |
e97fd7c6 | 164 | const struct bond_parm_tbl bond_lacp_tbl[] = { |
1da177e4 LT |
165 | { "slow", AD_LACP_SLOW}, |
166 | { "fast", AD_LACP_FAST}, | |
167 | { NULL, -1}, | |
168 | }; | |
169 | ||
e97fd7c6 | 170 | const struct bond_parm_tbl bond_mode_tbl[] = { |
1da177e4 LT |
171 | { "balance-rr", BOND_MODE_ROUNDROBIN}, |
172 | { "active-backup", BOND_MODE_ACTIVEBACKUP}, | |
173 | { "balance-xor", BOND_MODE_XOR}, | |
174 | { "broadcast", BOND_MODE_BROADCAST}, | |
175 | { "802.3ad", BOND_MODE_8023AD}, | |
176 | { "balance-tlb", BOND_MODE_TLB}, | |
177 | { "balance-alb", BOND_MODE_ALB}, | |
178 | { NULL, -1}, | |
179 | }; | |
180 | ||
e97fd7c6 | 181 | const struct bond_parm_tbl xmit_hashtype_tbl[] = { |
169a3e66 JV |
182 | { "layer2", BOND_XMIT_POLICY_LAYER2}, |
183 | { "layer3+4", BOND_XMIT_POLICY_LAYER34}, | |
6f6652be | 184 | { "layer2+3", BOND_XMIT_POLICY_LAYER23}, |
169a3e66 JV |
185 | { NULL, -1}, |
186 | }; | |
187 | ||
e97fd7c6 | 188 | const struct bond_parm_tbl arp_validate_tbl[] = { |
f5b2b966 JV |
189 | { "none", BOND_ARP_VALIDATE_NONE}, |
190 | { "active", BOND_ARP_VALIDATE_ACTIVE}, | |
191 | { "backup", BOND_ARP_VALIDATE_BACKUP}, | |
192 | { "all", BOND_ARP_VALIDATE_ALL}, | |
193 | { NULL, -1}, | |
194 | }; | |
195 | ||
e97fd7c6 | 196 | const struct bond_parm_tbl fail_over_mac_tbl[] = { |
3915c1e8 JV |
197 | { "none", BOND_FOM_NONE}, |
198 | { "active", BOND_FOM_ACTIVE}, | |
199 | { "follow", BOND_FOM_FOLLOW}, | |
200 | { NULL, -1}, | |
201 | }; | |
202 | ||
fd989c83 JV |
203 | struct bond_parm_tbl ad_select_tbl[] = { |
204 | { "stable", BOND_AD_STABLE}, | |
205 | { "bandwidth", BOND_AD_BANDWIDTH}, | |
206 | { "count", BOND_AD_COUNT}, | |
207 | { NULL, -1}, | |
208 | }; | |
209 | ||
1da177e4 LT |
210 | /*-------------------------- Forward declarations ---------------------------*/ |
211 | ||
c3ade5ca | 212 | static void bond_send_gratuitous_arp(struct bonding *bond); |
181470fc | 213 | static int bond_init(struct net_device *bond_dev); |
c50b85d0 | 214 | static void bond_deinit(struct net_device *bond_dev); |
1da177e4 LT |
215 | |
216 | /*---------------------------- General routines -----------------------------*/ | |
217 | ||
4ad072c9 | 218 | static const char *bond_mode_name(int mode) |
1da177e4 | 219 | { |
77afc92b HE |
220 | static const char *names[] = { |
221 | [BOND_MODE_ROUNDROBIN] = "load balancing (round-robin)", | |
222 | [BOND_MODE_ACTIVEBACKUP] = "fault-tolerance (active-backup)", | |
223 | [BOND_MODE_XOR] = "load balancing (xor)", | |
224 | [BOND_MODE_BROADCAST] = "fault-tolerance (broadcast)", | |
3d632c3f | 225 | [BOND_MODE_8023AD] = "IEEE 802.3ad Dynamic link aggregation", |
77afc92b HE |
226 | [BOND_MODE_TLB] = "transmit load balancing", |
227 | [BOND_MODE_ALB] = "adaptive load balancing", | |
228 | }; | |
229 | ||
230 | if (mode < 0 || mode > BOND_MODE_ALB) | |
1da177e4 | 231 | return "unknown"; |
77afc92b HE |
232 | |
233 | return names[mode]; | |
1da177e4 LT |
234 | } |
235 | ||
236 | /*---------------------------------- VLAN -----------------------------------*/ | |
237 | ||
238 | /** | |
239 | * bond_add_vlan - add a new vlan id on bond | |
240 | * @bond: bond that got the notification | |
241 | * @vlan_id: the vlan id to add | |
242 | * | |
243 | * Returns -ENOMEM if allocation failed. | |
244 | */ | |
245 | static int bond_add_vlan(struct bonding *bond, unsigned short vlan_id) | |
246 | { | |
247 | struct vlan_entry *vlan; | |
248 | ||
5a03cdb7 | 249 | pr_debug("bond: %s, vlan id %d\n", |
3d632c3f | 250 | (bond ? bond->dev->name : "None"), vlan_id); |
1da177e4 | 251 | |
305d552a | 252 | vlan = kzalloc(sizeof(struct vlan_entry), GFP_KERNEL); |
3d632c3f | 253 | if (!vlan) |
1da177e4 | 254 | return -ENOMEM; |
1da177e4 LT |
255 | |
256 | INIT_LIST_HEAD(&vlan->vlan_list); | |
257 | vlan->vlan_id = vlan_id; | |
258 | ||
259 | write_lock_bh(&bond->lock); | |
260 | ||
261 | list_add_tail(&vlan->vlan_list, &bond->vlan_list); | |
262 | ||
263 | write_unlock_bh(&bond->lock); | |
264 | ||
5a03cdb7 | 265 | pr_debug("added VLAN ID %d on bond %s\n", vlan_id, bond->dev->name); |
1da177e4 LT |
266 | |
267 | return 0; | |
268 | } | |
269 | ||
270 | /** | |
271 | * bond_del_vlan - delete a vlan id from bond | |
272 | * @bond: bond that got the notification | |
273 | * @vlan_id: the vlan id to delete | |
274 | * | |
275 | * returns -ENODEV if @vlan_id was not found in @bond. | |
276 | */ | |
277 | static int bond_del_vlan(struct bonding *bond, unsigned short vlan_id) | |
278 | { | |
0883beca | 279 | struct vlan_entry *vlan; |
1da177e4 LT |
280 | int res = -ENODEV; |
281 | ||
5a03cdb7 | 282 | pr_debug("bond: %s, vlan id %d\n", bond->dev->name, vlan_id); |
1da177e4 LT |
283 | |
284 | write_lock_bh(&bond->lock); | |
285 | ||
0883beca | 286 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
1da177e4 LT |
287 | if (vlan->vlan_id == vlan_id) { |
288 | list_del(&vlan->vlan_list); | |
289 | ||
58402054 | 290 | if (bond_is_lb(bond)) |
1da177e4 | 291 | bond_alb_clear_vlan(bond, vlan_id); |
1da177e4 | 292 | |
5a03cdb7 | 293 | pr_debug("removed VLAN ID %d from bond %s\n", vlan_id, |
1da177e4 LT |
294 | bond->dev->name); |
295 | ||
296 | kfree(vlan); | |
297 | ||
298 | if (list_empty(&bond->vlan_list) && | |
299 | (bond->slave_cnt == 0)) { | |
300 | /* Last VLAN removed and no slaves, so | |
301 | * restore block on adding VLANs. This will | |
302 | * be removed once new slaves that are not | |
303 | * VLAN challenged will be added. | |
304 | */ | |
305 | bond->dev->features |= NETIF_F_VLAN_CHALLENGED; | |
306 | } | |
307 | ||
308 | res = 0; | |
309 | goto out; | |
310 | } | |
311 | } | |
312 | ||
5a03cdb7 | 313 | pr_debug("couldn't find VLAN ID %d in bond %s\n", vlan_id, |
1da177e4 LT |
314 | bond->dev->name); |
315 | ||
316 | out: | |
317 | write_unlock_bh(&bond->lock); | |
318 | return res; | |
319 | } | |
320 | ||
321 | /** | |
322 | * bond_has_challenged_slaves | |
323 | * @bond: the bond we're working on | |
324 | * | |
325 | * Searches the slave list. Returns 1 if a vlan challenged slave | |
326 | * was found, 0 otherwise. | |
327 | * | |
328 | * Assumes bond->lock is held. | |
329 | */ | |
330 | static int bond_has_challenged_slaves(struct bonding *bond) | |
331 | { | |
332 | struct slave *slave; | |
333 | int i; | |
334 | ||
335 | bond_for_each_slave(bond, slave, i) { | |
336 | if (slave->dev->features & NETIF_F_VLAN_CHALLENGED) { | |
5a03cdb7 | 337 | pr_debug("found VLAN challenged slave - %s\n", |
1da177e4 LT |
338 | slave->dev->name); |
339 | return 1; | |
340 | } | |
341 | } | |
342 | ||
5a03cdb7 | 343 | pr_debug("no VLAN challenged slaves found\n"); |
1da177e4 LT |
344 | return 0; |
345 | } | |
346 | ||
347 | /** | |
348 | * bond_next_vlan - safely skip to the next item in the vlans list. | |
349 | * @bond: the bond we're working on | |
350 | * @curr: item we're advancing from | |
351 | * | |
352 | * Returns %NULL if list is empty, bond->next_vlan if @curr is %NULL, | |
353 | * or @curr->next otherwise (even if it is @curr itself again). | |
3d632c3f | 354 | * |
1da177e4 LT |
355 | * Caller must hold bond->lock |
356 | */ | |
357 | struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr) | |
358 | { | |
359 | struct vlan_entry *next, *last; | |
360 | ||
3d632c3f | 361 | if (list_empty(&bond->vlan_list)) |
1da177e4 | 362 | return NULL; |
1da177e4 LT |
363 | |
364 | if (!curr) { | |
365 | next = list_entry(bond->vlan_list.next, | |
366 | struct vlan_entry, vlan_list); | |
367 | } else { | |
368 | last = list_entry(bond->vlan_list.prev, | |
369 | struct vlan_entry, vlan_list); | |
370 | if (last == curr) { | |
371 | next = list_entry(bond->vlan_list.next, | |
372 | struct vlan_entry, vlan_list); | |
373 | } else { | |
374 | next = list_entry(curr->vlan_list.next, | |
375 | struct vlan_entry, vlan_list); | |
376 | } | |
377 | } | |
378 | ||
379 | return next; | |
380 | } | |
381 | ||
382 | /** | |
383 | * bond_dev_queue_xmit - Prepare skb for xmit. | |
3d632c3f | 384 | * |
1da177e4 LT |
385 | * @bond: bond device that got this skb for tx. |
386 | * @skb: hw accel VLAN tagged skb to transmit | |
387 | * @slave_dev: slave that is supposed to xmit this skbuff | |
3d632c3f | 388 | * |
1da177e4 LT |
389 | * When the bond gets an skb to transmit that is |
390 | * already hardware accelerated VLAN tagged, and it | |
391 | * needs to relay this skb to a slave that is not | |
392 | * hw accel capable, the skb needs to be "unaccelerated", | |
393 | * i.e. strip the hwaccel tag and re-insert it as part | |
394 | * of the payload. | |
395 | */ | |
3d632c3f SH |
396 | int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, |
397 | struct net_device *slave_dev) | |
1da177e4 | 398 | { |
966bc6f4 | 399 | unsigned short uninitialized_var(vlan_id); |
1da177e4 LT |
400 | |
401 | if (!list_empty(&bond->vlan_list) && | |
402 | !(slave_dev->features & NETIF_F_HW_VLAN_TX) && | |
403 | vlan_get_tag(skb, &vlan_id) == 0) { | |
404 | skb->dev = slave_dev; | |
405 | skb = vlan_put_tag(skb, vlan_id); | |
406 | if (!skb) { | |
407 | /* vlan_put_tag() frees the skb in case of error, | |
408 | * so return success here so the calling functions | |
409 | * won't attempt to free is again. | |
410 | */ | |
411 | return 0; | |
412 | } | |
413 | } else { | |
414 | skb->dev = slave_dev; | |
415 | } | |
416 | ||
417 | skb->priority = 1; | |
418 | dev_queue_xmit(skb); | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
423 | /* | |
424 | * In the following 3 functions, bond_vlan_rx_register(), bond_vlan_rx_add_vid | |
425 | * and bond_vlan_rx_kill_vid, We don't protect the slave list iteration with a | |
426 | * lock because: | |
427 | * a. This operation is performed in IOCTL context, | |
428 | * b. The operation is protected by the RTNL semaphore in the 8021q code, | |
429 | * c. Holding a lock with BH disabled while directly calling a base driver | |
430 | * entry point is generally a BAD idea. | |
3d632c3f | 431 | * |
1da177e4 LT |
432 | * The design of synchronization/protection for this operation in the 8021q |
433 | * module is good for one or more VLAN devices over a single physical device | |
434 | * and cannot be extended for a teaming solution like bonding, so there is a | |
435 | * potential race condition here where a net device from the vlan group might | |
436 | * be referenced (either by a base driver or the 8021q code) while it is being | |
437 | * removed from the system. However, it turns out we're not making matters | |
438 | * worse, and if it works for regular VLAN usage it will work here too. | |
439 | */ | |
440 | ||
441 | /** | |
442 | * bond_vlan_rx_register - Propagates registration to slaves | |
443 | * @bond_dev: bonding net device that got called | |
444 | * @grp: vlan group being registered | |
445 | */ | |
3d632c3f SH |
446 | static void bond_vlan_rx_register(struct net_device *bond_dev, |
447 | struct vlan_group *grp) | |
1da177e4 | 448 | { |
454d7c9b | 449 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
450 | struct slave *slave; |
451 | int i; | |
452 | ||
453 | bond->vlgrp = grp; | |
454 | ||
455 | bond_for_each_slave(bond, slave, i) { | |
456 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 457 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
458 | |
459 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
460 | slave_ops->ndo_vlan_rx_register) { |
461 | slave_ops->ndo_vlan_rx_register(slave_dev, grp); | |
1da177e4 LT |
462 | } |
463 | } | |
464 | } | |
465 | ||
466 | /** | |
467 | * bond_vlan_rx_add_vid - Propagates adding an id to slaves | |
468 | * @bond_dev: bonding net device that got called | |
469 | * @vid: vlan id being added | |
470 | */ | |
471 | static void bond_vlan_rx_add_vid(struct net_device *bond_dev, uint16_t vid) | |
472 | { | |
454d7c9b | 473 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
474 | struct slave *slave; |
475 | int i, res; | |
476 | ||
477 | bond_for_each_slave(bond, slave, i) { | |
478 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 479 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
480 | |
481 | if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && | |
eb7cc59a SH |
482 | slave_ops->ndo_vlan_rx_add_vid) { |
483 | slave_ops->ndo_vlan_rx_add_vid(slave_dev, vid); | |
1da177e4 LT |
484 | } |
485 | } | |
486 | ||
487 | res = bond_add_vlan(bond, vid); | |
488 | if (res) { | |
3d632c3f | 489 | pr_err(DRV_NAME |
4e0952c7 | 490 | ": %s: Error: Failed to add vlan id %d\n", |
1da177e4 LT |
491 | bond_dev->name, vid); |
492 | } | |
493 | } | |
494 | ||
495 | /** | |
496 | * bond_vlan_rx_kill_vid - Propagates deleting an id to slaves | |
497 | * @bond_dev: bonding net device that got called | |
498 | * @vid: vlan id being removed | |
499 | */ | |
500 | static void bond_vlan_rx_kill_vid(struct net_device *bond_dev, uint16_t vid) | |
501 | { | |
454d7c9b | 502 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
503 | struct slave *slave; |
504 | struct net_device *vlan_dev; | |
505 | int i, res; | |
506 | ||
507 | bond_for_each_slave(bond, slave, i) { | |
508 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 509 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
510 | |
511 | if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && | |
eb7cc59a | 512 | slave_ops->ndo_vlan_rx_kill_vid) { |
1da177e4 LT |
513 | /* Save and then restore vlan_dev in the grp array, |
514 | * since the slave's driver might clear it. | |
515 | */ | |
5c15bdec | 516 | vlan_dev = vlan_group_get_device(bond->vlgrp, vid); |
eb7cc59a | 517 | slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vid); |
5c15bdec | 518 | vlan_group_set_device(bond->vlgrp, vid, vlan_dev); |
1da177e4 LT |
519 | } |
520 | } | |
521 | ||
522 | res = bond_del_vlan(bond, vid); | |
523 | if (res) { | |
3d632c3f | 524 | pr_err(DRV_NAME |
4e0952c7 | 525 | ": %s: Error: Failed to remove vlan id %d\n", |
1da177e4 LT |
526 | bond_dev->name, vid); |
527 | } | |
528 | } | |
529 | ||
530 | static void bond_add_vlans_on_slave(struct bonding *bond, struct net_device *slave_dev) | |
531 | { | |
532 | struct vlan_entry *vlan; | |
eb7cc59a | 533 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
534 | |
535 | write_lock_bh(&bond->lock); | |
536 | ||
eb7cc59a | 537 | if (list_empty(&bond->vlan_list)) |
1da177e4 | 538 | goto out; |
1da177e4 LT |
539 | |
540 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
541 | slave_ops->ndo_vlan_rx_register) |
542 | slave_ops->ndo_vlan_rx_register(slave_dev, bond->vlgrp); | |
1da177e4 LT |
543 | |
544 | if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || | |
eb7cc59a | 545 | !(slave_ops->ndo_vlan_rx_add_vid)) |
1da177e4 | 546 | goto out; |
1da177e4 | 547 | |
eb7cc59a SH |
548 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) |
549 | slave_ops->ndo_vlan_rx_add_vid(slave_dev, vlan->vlan_id); | |
1da177e4 LT |
550 | |
551 | out: | |
552 | write_unlock_bh(&bond->lock); | |
553 | } | |
554 | ||
3d632c3f SH |
555 | static void bond_del_vlans_from_slave(struct bonding *bond, |
556 | struct net_device *slave_dev) | |
1da177e4 | 557 | { |
eb7cc59a | 558 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
559 | struct vlan_entry *vlan; |
560 | struct net_device *vlan_dev; | |
561 | ||
562 | write_lock_bh(&bond->lock); | |
563 | ||
eb7cc59a | 564 | if (list_empty(&bond->vlan_list)) |
1da177e4 | 565 | goto out; |
1da177e4 LT |
566 | |
567 | if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || | |
eb7cc59a | 568 | !(slave_ops->ndo_vlan_rx_kill_vid)) |
1da177e4 | 569 | goto unreg; |
1da177e4 LT |
570 | |
571 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { | |
572 | /* Save and then restore vlan_dev in the grp array, | |
573 | * since the slave's driver might clear it. | |
574 | */ | |
5c15bdec | 575 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
eb7cc59a | 576 | slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vlan->vlan_id); |
5c15bdec | 577 | vlan_group_set_device(bond->vlgrp, vlan->vlan_id, vlan_dev); |
1da177e4 LT |
578 | } |
579 | ||
580 | unreg: | |
581 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
582 | slave_ops->ndo_vlan_rx_register) |
583 | slave_ops->ndo_vlan_rx_register(slave_dev, NULL); | |
1da177e4 LT |
584 | |
585 | out: | |
586 | write_unlock_bh(&bond->lock); | |
587 | } | |
588 | ||
589 | /*------------------------------- Link status -------------------------------*/ | |
590 | ||
ff59c456 JV |
591 | /* |
592 | * Set the carrier state for the master according to the state of its | |
593 | * slaves. If any slaves are up, the master is up. In 802.3ad mode, | |
594 | * do special 802.3ad magic. | |
595 | * | |
596 | * Returns zero if carrier state does not change, nonzero if it does. | |
597 | */ | |
598 | static int bond_set_carrier(struct bonding *bond) | |
599 | { | |
600 | struct slave *slave; | |
601 | int i; | |
602 | ||
603 | if (bond->slave_cnt == 0) | |
604 | goto down; | |
605 | ||
606 | if (bond->params.mode == BOND_MODE_8023AD) | |
607 | return bond_3ad_set_carrier(bond); | |
608 | ||
609 | bond_for_each_slave(bond, slave, i) { | |
610 | if (slave->link == BOND_LINK_UP) { | |
611 | if (!netif_carrier_ok(bond->dev)) { | |
612 | netif_carrier_on(bond->dev); | |
613 | return 1; | |
614 | } | |
615 | return 0; | |
616 | } | |
617 | } | |
618 | ||
619 | down: | |
620 | if (netif_carrier_ok(bond->dev)) { | |
621 | netif_carrier_off(bond->dev); | |
622 | return 1; | |
623 | } | |
624 | return 0; | |
625 | } | |
626 | ||
1da177e4 LT |
627 | /* |
628 | * Get link speed and duplex from the slave's base driver | |
629 | * using ethtool. If for some reason the call fails or the | |
630 | * values are invalid, fake speed and duplex to 100/Full | |
631 | * and return error. | |
632 | */ | |
633 | static int bond_update_speed_duplex(struct slave *slave) | |
634 | { | |
635 | struct net_device *slave_dev = slave->dev; | |
1da177e4 | 636 | struct ethtool_cmd etool; |
61a44b9c | 637 | int res; |
1da177e4 LT |
638 | |
639 | /* Fake speed and duplex */ | |
640 | slave->speed = SPEED_100; | |
641 | slave->duplex = DUPLEX_FULL; | |
642 | ||
61a44b9c MW |
643 | if (!slave_dev->ethtool_ops || !slave_dev->ethtool_ops->get_settings) |
644 | return -1; | |
1da177e4 | 645 | |
61a44b9c MW |
646 | res = slave_dev->ethtool_ops->get_settings(slave_dev, &etool); |
647 | if (res < 0) | |
1da177e4 | 648 | return -1; |
1da177e4 | 649 | |
1da177e4 LT |
650 | switch (etool.speed) { |
651 | case SPEED_10: | |
652 | case SPEED_100: | |
653 | case SPEED_1000: | |
94dbffd5 | 654 | case SPEED_10000: |
1da177e4 LT |
655 | break; |
656 | default: | |
657 | return -1; | |
658 | } | |
659 | ||
660 | switch (etool.duplex) { | |
661 | case DUPLEX_FULL: | |
662 | case DUPLEX_HALF: | |
663 | break; | |
664 | default: | |
665 | return -1; | |
666 | } | |
667 | ||
668 | slave->speed = etool.speed; | |
669 | slave->duplex = etool.duplex; | |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
674 | /* | |
675 | * if <dev> supports MII link status reporting, check its link status. | |
676 | * | |
677 | * We either do MII/ETHTOOL ioctls, or check netif_carrier_ok(), | |
3d632c3f | 678 | * depending upon the setting of the use_carrier parameter. |
1da177e4 LT |
679 | * |
680 | * Return either BMSR_LSTATUS, meaning that the link is up (or we | |
681 | * can't tell and just pretend it is), or 0, meaning that the link is | |
682 | * down. | |
683 | * | |
684 | * If reporting is non-zero, instead of faking link up, return -1 if | |
685 | * both ETHTOOL and MII ioctls fail (meaning the device does not | |
686 | * support them). If use_carrier is set, return whatever it says. | |
687 | * It'd be nice if there was a good way to tell if a driver supports | |
688 | * netif_carrier, but there really isn't. | |
689 | */ | |
3d632c3f SH |
690 | static int bond_check_dev_link(struct bonding *bond, |
691 | struct net_device *slave_dev, int reporting) | |
1da177e4 | 692 | { |
eb7cc59a | 693 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
3d632c3f | 694 | static int (*ioctl)(struct net_device *, struct ifreq *, int); |
1da177e4 LT |
695 | struct ifreq ifr; |
696 | struct mii_ioctl_data *mii; | |
1da177e4 | 697 | |
6c988853 PG |
698 | if (!reporting && !netif_running(slave_dev)) |
699 | return 0; | |
700 | ||
eb7cc59a | 701 | if (bond->params.use_carrier) |
1da177e4 | 702 | return netif_carrier_ok(slave_dev) ? BMSR_LSTATUS : 0; |
1da177e4 | 703 | |
29112f4e JP |
704 | /* Try to get link status using Ethtool first. */ |
705 | if (slave_dev->ethtool_ops) { | |
706 | if (slave_dev->ethtool_ops->get_link) { | |
707 | u32 link; | |
708 | ||
709 | link = slave_dev->ethtool_ops->get_link(slave_dev); | |
710 | ||
711 | return link ? BMSR_LSTATUS : 0; | |
712 | } | |
713 | } | |
714 | ||
3d632c3f | 715 | /* Ethtool can't be used, fallback to MII ioctls. */ |
eb7cc59a | 716 | ioctl = slave_ops->ndo_do_ioctl; |
1da177e4 LT |
717 | if (ioctl) { |
718 | /* TODO: set pointer to correct ioctl on a per team member */ | |
719 | /* bases to make this more efficient. that is, once */ | |
720 | /* we determine the correct ioctl, we will always */ | |
721 | /* call it and not the others for that team */ | |
722 | /* member. */ | |
723 | ||
724 | /* | |
725 | * We cannot assume that SIOCGMIIPHY will also read a | |
726 | * register; not all network drivers (e.g., e100) | |
727 | * support that. | |
728 | */ | |
729 | ||
730 | /* Yes, the mii is overlaid on the ifreq.ifr_ifru */ | |
731 | strncpy(ifr.ifr_name, slave_dev->name, IFNAMSIZ); | |
732 | mii = if_mii(&ifr); | |
733 | if (IOCTL(slave_dev, &ifr, SIOCGMIIPHY) == 0) { | |
734 | mii->reg_num = MII_BMSR; | |
3d632c3f SH |
735 | if (IOCTL(slave_dev, &ifr, SIOCGMIIREG) == 0) |
736 | return mii->val_out & BMSR_LSTATUS; | |
1da177e4 LT |
737 | } |
738 | } | |
739 | ||
1da177e4 LT |
740 | /* |
741 | * If reporting, report that either there's no dev->do_ioctl, | |
61a44b9c | 742 | * or both SIOCGMIIREG and get_link failed (meaning that we |
1da177e4 LT |
743 | * cannot report link status). If not reporting, pretend |
744 | * we're ok. | |
745 | */ | |
3d632c3f | 746 | return reporting ? -1 : BMSR_LSTATUS; |
1da177e4 LT |
747 | } |
748 | ||
749 | /*----------------------------- Multicast list ------------------------------*/ | |
750 | ||
751 | /* | |
752 | * Returns 0 if dmi1 and dmi2 are the same, non-0 otherwise | |
753 | */ | |
3d632c3f SH |
754 | static inline int bond_is_dmi_same(const struct dev_mc_list *dmi1, |
755 | const struct dev_mc_list *dmi2) | |
1da177e4 LT |
756 | { |
757 | return memcmp(dmi1->dmi_addr, dmi2->dmi_addr, dmi1->dmi_addrlen) == 0 && | |
758 | dmi1->dmi_addrlen == dmi2->dmi_addrlen; | |
759 | } | |
760 | ||
761 | /* | |
762 | * returns dmi entry if found, NULL otherwise | |
763 | */ | |
3d632c3f SH |
764 | static struct dev_mc_list *bond_mc_list_find_dmi(struct dev_mc_list *dmi, |
765 | struct dev_mc_list *mc_list) | |
1da177e4 LT |
766 | { |
767 | struct dev_mc_list *idmi; | |
768 | ||
769 | for (idmi = mc_list; idmi; idmi = idmi->next) { | |
3d632c3f | 770 | if (bond_is_dmi_same(dmi, idmi)) |
1da177e4 | 771 | return idmi; |
1da177e4 LT |
772 | } |
773 | ||
774 | return NULL; | |
775 | } | |
776 | ||
777 | /* | |
778 | * Push the promiscuity flag down to appropriate slaves | |
779 | */ | |
7e1a1ac1 | 780 | static int bond_set_promiscuity(struct bonding *bond, int inc) |
1da177e4 | 781 | { |
7e1a1ac1 | 782 | int err = 0; |
1da177e4 LT |
783 | if (USES_PRIMARY(bond->params.mode)) { |
784 | /* write lock already acquired */ | |
785 | if (bond->curr_active_slave) { | |
7e1a1ac1 WC |
786 | err = dev_set_promiscuity(bond->curr_active_slave->dev, |
787 | inc); | |
1da177e4 LT |
788 | } |
789 | } else { | |
790 | struct slave *slave; | |
791 | int i; | |
792 | bond_for_each_slave(bond, slave, i) { | |
7e1a1ac1 WC |
793 | err = dev_set_promiscuity(slave->dev, inc); |
794 | if (err) | |
795 | return err; | |
1da177e4 LT |
796 | } |
797 | } | |
7e1a1ac1 | 798 | return err; |
1da177e4 LT |
799 | } |
800 | ||
801 | /* | |
802 | * Push the allmulti flag down to all slaves | |
803 | */ | |
7e1a1ac1 | 804 | static int bond_set_allmulti(struct bonding *bond, int inc) |
1da177e4 | 805 | { |
7e1a1ac1 | 806 | int err = 0; |
1da177e4 LT |
807 | if (USES_PRIMARY(bond->params.mode)) { |
808 | /* write lock already acquired */ | |
809 | if (bond->curr_active_slave) { | |
7e1a1ac1 WC |
810 | err = dev_set_allmulti(bond->curr_active_slave->dev, |
811 | inc); | |
1da177e4 LT |
812 | } |
813 | } else { | |
814 | struct slave *slave; | |
815 | int i; | |
816 | bond_for_each_slave(bond, slave, i) { | |
7e1a1ac1 WC |
817 | err = dev_set_allmulti(slave->dev, inc); |
818 | if (err) | |
819 | return err; | |
1da177e4 LT |
820 | } |
821 | } | |
7e1a1ac1 | 822 | return err; |
1da177e4 LT |
823 | } |
824 | ||
825 | /* | |
826 | * Add a Multicast address to slaves | |
827 | * according to mode | |
828 | */ | |
829 | static void bond_mc_add(struct bonding *bond, void *addr, int alen) | |
830 | { | |
831 | if (USES_PRIMARY(bond->params.mode)) { | |
832 | /* write lock already acquired */ | |
3d632c3f | 833 | if (bond->curr_active_slave) |
1da177e4 | 834 | dev_mc_add(bond->curr_active_slave->dev, addr, alen, 0); |
1da177e4 LT |
835 | } else { |
836 | struct slave *slave; | |
837 | int i; | |
3d632c3f SH |
838 | |
839 | bond_for_each_slave(bond, slave, i) | |
1da177e4 | 840 | dev_mc_add(slave->dev, addr, alen, 0); |
1da177e4 LT |
841 | } |
842 | } | |
843 | ||
844 | /* | |
845 | * Remove a multicast address from slave | |
846 | * according to mode | |
847 | */ | |
848 | static void bond_mc_delete(struct bonding *bond, void *addr, int alen) | |
849 | { | |
850 | if (USES_PRIMARY(bond->params.mode)) { | |
851 | /* write lock already acquired */ | |
3d632c3f SH |
852 | if (bond->curr_active_slave) |
853 | dev_mc_delete(bond->curr_active_slave->dev, addr, | |
854 | alen, 0); | |
1da177e4 LT |
855 | } else { |
856 | struct slave *slave; | |
857 | int i; | |
858 | bond_for_each_slave(bond, slave, i) { | |
859 | dev_mc_delete(slave->dev, addr, alen, 0); | |
860 | } | |
861 | } | |
862 | } | |
863 | ||
a816c7c7 JV |
864 | |
865 | /* | |
866 | * Retrieve the list of registered multicast addresses for the bonding | |
867 | * device and retransmit an IGMP JOIN request to the current active | |
868 | * slave. | |
869 | */ | |
870 | static void bond_resend_igmp_join_requests(struct bonding *bond) | |
871 | { | |
872 | struct in_device *in_dev; | |
873 | struct ip_mc_list *im; | |
874 | ||
875 | rcu_read_lock(); | |
876 | in_dev = __in_dev_get_rcu(bond->dev); | |
877 | if (in_dev) { | |
3d632c3f | 878 | for (im = in_dev->mc_list; im; im = im->next) |
a816c7c7 | 879 | ip_mc_rejoin_group(im); |
a816c7c7 JV |
880 | } |
881 | ||
882 | rcu_read_unlock(); | |
883 | } | |
884 | ||
1da177e4 LT |
885 | /* |
886 | * Totally destroys the mc_list in bond | |
887 | */ | |
888 | static void bond_mc_list_destroy(struct bonding *bond) | |
889 | { | |
890 | struct dev_mc_list *dmi; | |
891 | ||
892 | dmi = bond->mc_list; | |
893 | while (dmi) { | |
894 | bond->mc_list = dmi->next; | |
895 | kfree(dmi); | |
896 | dmi = bond->mc_list; | |
897 | } | |
3d632c3f SH |
898 | |
899 | bond->mc_list = NULL; | |
1da177e4 LT |
900 | } |
901 | ||
902 | /* | |
903 | * Copy all the Multicast addresses from src to the bonding device dst | |
904 | */ | |
de54f390 | 905 | static int bond_mc_list_copy(struct dev_mc_list *mc_list, struct bonding *bond, |
dd0fc66f | 906 | gfp_t gfp_flag) |
1da177e4 LT |
907 | { |
908 | struct dev_mc_list *dmi, *new_dmi; | |
909 | ||
910 | for (dmi = mc_list; dmi; dmi = dmi->next) { | |
de54f390 | 911 | new_dmi = kmalloc(sizeof(struct dev_mc_list), gfp_flag); |
1da177e4 LT |
912 | |
913 | if (!new_dmi) { | |
914 | /* FIXME: Potential memory leak !!! */ | |
915 | return -ENOMEM; | |
916 | } | |
917 | ||
918 | new_dmi->next = bond->mc_list; | |
919 | bond->mc_list = new_dmi; | |
920 | new_dmi->dmi_addrlen = dmi->dmi_addrlen; | |
921 | memcpy(new_dmi->dmi_addr, dmi->dmi_addr, dmi->dmi_addrlen); | |
922 | new_dmi->dmi_users = dmi->dmi_users; | |
923 | new_dmi->dmi_gusers = dmi->dmi_gusers; | |
924 | } | |
925 | ||
926 | return 0; | |
927 | } | |
928 | ||
929 | /* | |
930 | * flush all members of flush->mc_list from device dev->mc_list | |
931 | */ | |
3d632c3f SH |
932 | static void bond_mc_list_flush(struct net_device *bond_dev, |
933 | struct net_device *slave_dev) | |
1da177e4 | 934 | { |
454d7c9b | 935 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
936 | struct dev_mc_list *dmi; |
937 | ||
3d632c3f | 938 | for (dmi = bond_dev->mc_list; dmi; dmi = dmi->next) |
1da177e4 | 939 | dev_mc_delete(slave_dev, dmi->dmi_addr, dmi->dmi_addrlen, 0); |
1da177e4 LT |
940 | |
941 | if (bond->params.mode == BOND_MODE_8023AD) { | |
942 | /* del lacpdu mc addr from mc list */ | |
943 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; | |
944 | ||
945 | dev_mc_delete(slave_dev, lacpdu_multicast, ETH_ALEN, 0); | |
946 | } | |
947 | } | |
948 | ||
949 | /*--------------------------- Active slave change ---------------------------*/ | |
950 | ||
951 | /* | |
952 | * Update the mc list and multicast-related flags for the new and | |
953 | * old active slaves (if any) according to the multicast mode, and | |
954 | * promiscuous flags unconditionally. | |
955 | */ | |
3d632c3f SH |
956 | static void bond_mc_swap(struct bonding *bond, struct slave *new_active, |
957 | struct slave *old_active) | |
1da177e4 LT |
958 | { |
959 | struct dev_mc_list *dmi; | |
960 | ||
3d632c3f | 961 | if (!USES_PRIMARY(bond->params.mode)) |
1da177e4 LT |
962 | /* nothing to do - mc list is already up-to-date on |
963 | * all slaves | |
964 | */ | |
965 | return; | |
1da177e4 LT |
966 | |
967 | if (old_active) { | |
3d632c3f | 968 | if (bond->dev->flags & IFF_PROMISC) |
1da177e4 | 969 | dev_set_promiscuity(old_active->dev, -1); |
1da177e4 | 970 | |
3d632c3f | 971 | if (bond->dev->flags & IFF_ALLMULTI) |
1da177e4 | 972 | dev_set_allmulti(old_active->dev, -1); |
1da177e4 | 973 | |
3d632c3f SH |
974 | for (dmi = bond->dev->mc_list; dmi; dmi = dmi->next) |
975 | dev_mc_delete(old_active->dev, dmi->dmi_addr, | |
976 | dmi->dmi_addrlen, 0); | |
1da177e4 LT |
977 | } |
978 | ||
979 | if (new_active) { | |
7e1a1ac1 | 980 | /* FIXME: Signal errors upstream. */ |
3d632c3f | 981 | if (bond->dev->flags & IFF_PROMISC) |
1da177e4 | 982 | dev_set_promiscuity(new_active->dev, 1); |
1da177e4 | 983 | |
3d632c3f | 984 | if (bond->dev->flags & IFF_ALLMULTI) |
1da177e4 | 985 | dev_set_allmulti(new_active->dev, 1); |
1da177e4 | 986 | |
3d632c3f SH |
987 | for (dmi = bond->dev->mc_list; dmi; dmi = dmi->next) |
988 | dev_mc_add(new_active->dev, dmi->dmi_addr, | |
989 | dmi->dmi_addrlen, 0); | |
a816c7c7 | 990 | bond_resend_igmp_join_requests(bond); |
1da177e4 LT |
991 | } |
992 | } | |
993 | ||
3915c1e8 JV |
994 | /* |
995 | * bond_do_fail_over_mac | |
996 | * | |
997 | * Perform special MAC address swapping for fail_over_mac settings | |
998 | * | |
999 | * Called with RTNL, bond->lock for read, curr_slave_lock for write_bh. | |
1000 | */ | |
1001 | static void bond_do_fail_over_mac(struct bonding *bond, | |
1002 | struct slave *new_active, | |
1003 | struct slave *old_active) | |
1f78d9f9 HE |
1004 | __releases(&bond->curr_slave_lock) |
1005 | __releases(&bond->lock) | |
1006 | __acquires(&bond->lock) | |
1007 | __acquires(&bond->curr_slave_lock) | |
3915c1e8 JV |
1008 | { |
1009 | u8 tmp_mac[ETH_ALEN]; | |
1010 | struct sockaddr saddr; | |
1011 | int rv; | |
1012 | ||
1013 | switch (bond->params.fail_over_mac) { | |
1014 | case BOND_FOM_ACTIVE: | |
1015 | if (new_active) | |
1016 | memcpy(bond->dev->dev_addr, new_active->dev->dev_addr, | |
1017 | new_active->dev->addr_len); | |
1018 | break; | |
1019 | case BOND_FOM_FOLLOW: | |
1020 | /* | |
1021 | * if new_active && old_active, swap them | |
1022 | * if just old_active, do nothing (going to no active slave) | |
1023 | * if just new_active, set new_active to bond's MAC | |
1024 | */ | |
1025 | if (!new_active) | |
1026 | return; | |
1027 | ||
1028 | write_unlock_bh(&bond->curr_slave_lock); | |
1029 | read_unlock(&bond->lock); | |
1030 | ||
1031 | if (old_active) { | |
1032 | memcpy(tmp_mac, new_active->dev->dev_addr, ETH_ALEN); | |
1033 | memcpy(saddr.sa_data, old_active->dev->dev_addr, | |
1034 | ETH_ALEN); | |
1035 | saddr.sa_family = new_active->dev->type; | |
1036 | } else { | |
1037 | memcpy(saddr.sa_data, bond->dev->dev_addr, ETH_ALEN); | |
1038 | saddr.sa_family = bond->dev->type; | |
1039 | } | |
1040 | ||
1041 | rv = dev_set_mac_address(new_active->dev, &saddr); | |
1042 | if (rv) { | |
3d632c3f | 1043 | pr_err(DRV_NAME |
3915c1e8 JV |
1044 | ": %s: Error %d setting MAC of slave %s\n", |
1045 | bond->dev->name, -rv, new_active->dev->name); | |
1046 | goto out; | |
1047 | } | |
1048 | ||
1049 | if (!old_active) | |
1050 | goto out; | |
1051 | ||
1052 | memcpy(saddr.sa_data, tmp_mac, ETH_ALEN); | |
1053 | saddr.sa_family = old_active->dev->type; | |
1054 | ||
1055 | rv = dev_set_mac_address(old_active->dev, &saddr); | |
1056 | if (rv) | |
3d632c3f | 1057 | pr_err(DRV_NAME |
3915c1e8 JV |
1058 | ": %s: Error %d setting MAC of slave %s\n", |
1059 | bond->dev->name, -rv, new_active->dev->name); | |
1060 | out: | |
1061 | read_lock(&bond->lock); | |
1062 | write_lock_bh(&bond->curr_slave_lock); | |
1063 | break; | |
1064 | default: | |
3d632c3f | 1065 | pr_err(DRV_NAME |
3915c1e8 JV |
1066 | ": %s: bond_do_fail_over_mac impossible: bad policy %d\n", |
1067 | bond->dev->name, bond->params.fail_over_mac); | |
1068 | break; | |
1069 | } | |
1070 | ||
1071 | } | |
1072 | ||
1073 | ||
1da177e4 LT |
1074 | /** |
1075 | * find_best_interface - select the best available slave to be the active one | |
1076 | * @bond: our bonding struct | |
1077 | * | |
1078 | * Warning: Caller must hold curr_slave_lock for writing. | |
1079 | */ | |
1080 | static struct slave *bond_find_best_slave(struct bonding *bond) | |
1081 | { | |
1082 | struct slave *new_active, *old_active; | |
1083 | struct slave *bestslave = NULL; | |
1084 | int mintime = bond->params.updelay; | |
1085 | int i; | |
1086 | ||
1087 | new_active = old_active = bond->curr_active_slave; | |
1088 | ||
1089 | if (!new_active) { /* there were no active slaves left */ | |
3d632c3f | 1090 | if (bond->slave_cnt > 0) /* found one slave */ |
1da177e4 | 1091 | new_active = bond->first_slave; |
3d632c3f | 1092 | else |
1da177e4 | 1093 | return NULL; /* still no slave, return NULL */ |
1da177e4 LT |
1094 | } |
1095 | ||
3d632c3f SH |
1096 | /* |
1097 | * first try the primary link; if arping, a link must tx/rx | |
1098 | * traffic before it can be considered the curr_active_slave. | |
1099 | * also, we would skip slaves between the curr_active_slave | |
1100 | * and primary_slave that may be up and able to arp | |
1da177e4 LT |
1101 | */ |
1102 | if ((bond->primary_slave) && | |
1103 | (!bond->params.arp_interval) && | |
1104 | (IS_UP(bond->primary_slave->dev))) { | |
1105 | new_active = bond->primary_slave; | |
1106 | } | |
1107 | ||
1108 | /* remember where to stop iterating over the slaves */ | |
1109 | old_active = new_active; | |
1110 | ||
1111 | bond_for_each_slave_from(bond, new_active, i, old_active) { | |
1112 | if (IS_UP(new_active->dev)) { | |
1113 | if (new_active->link == BOND_LINK_UP) { | |
1114 | return new_active; | |
1115 | } else if (new_active->link == BOND_LINK_BACK) { | |
1116 | /* link up, but waiting for stabilization */ | |
1117 | if (new_active->delay < mintime) { | |
1118 | mintime = new_active->delay; | |
1119 | bestslave = new_active; | |
1120 | } | |
1121 | } | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | return bestslave; | |
1126 | } | |
1127 | ||
1128 | /** | |
1129 | * change_active_interface - change the active slave into the specified one | |
1130 | * @bond: our bonding struct | |
1131 | * @new: the new slave to make the active one | |
1132 | * | |
1133 | * Set the new slave to the bond's settings and unset them on the old | |
1134 | * curr_active_slave. | |
1135 | * Setting include flags, mc-list, promiscuity, allmulti, etc. | |
1136 | * | |
1137 | * If @new's link state is %BOND_LINK_BACK we'll set it to %BOND_LINK_UP, | |
1138 | * because it is apparently the best available slave we have, even though its | |
1139 | * updelay hasn't timed out yet. | |
1140 | * | |
3915c1e8 JV |
1141 | * If new_active is not NULL, caller must hold bond->lock for read and |
1142 | * curr_slave_lock for write_bh. | |
1da177e4 | 1143 | */ |
a77b5325 | 1144 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active) |
1da177e4 LT |
1145 | { |
1146 | struct slave *old_active = bond->curr_active_slave; | |
1147 | ||
3d632c3f | 1148 | if (old_active == new_active) |
1da177e4 | 1149 | return; |
1da177e4 LT |
1150 | |
1151 | if (new_active) { | |
b2220cad JV |
1152 | new_active->jiffies = jiffies; |
1153 | ||
1da177e4 LT |
1154 | if (new_active->link == BOND_LINK_BACK) { |
1155 | if (USES_PRIMARY(bond->params.mode)) { | |
3d632c3f | 1156 | pr_info(DRV_NAME |
1da177e4 LT |
1157 | ": %s: making interface %s the new " |
1158 | "active one %d ms earlier.\n", | |
1159 | bond->dev->name, new_active->dev->name, | |
1160 | (bond->params.updelay - new_active->delay) * bond->params.miimon); | |
1161 | } | |
1162 | ||
1163 | new_active->delay = 0; | |
1164 | new_active->link = BOND_LINK_UP; | |
1da177e4 | 1165 | |
3d632c3f | 1166 | if (bond->params.mode == BOND_MODE_8023AD) |
1da177e4 | 1167 | bond_3ad_handle_link_change(new_active, BOND_LINK_UP); |
1da177e4 | 1168 | |
58402054 | 1169 | if (bond_is_lb(bond)) |
1da177e4 | 1170 | bond_alb_handle_link_change(bond, new_active, BOND_LINK_UP); |
1da177e4 LT |
1171 | } else { |
1172 | if (USES_PRIMARY(bond->params.mode)) { | |
3d632c3f | 1173 | pr_info(DRV_NAME |
1da177e4 LT |
1174 | ": %s: making interface %s the new " |
1175 | "active one.\n", | |
1176 | bond->dev->name, new_active->dev->name); | |
1177 | } | |
1178 | } | |
1179 | } | |
1180 | ||
3d632c3f | 1181 | if (USES_PRIMARY(bond->params.mode)) |
1da177e4 | 1182 | bond_mc_swap(bond, new_active, old_active); |
1da177e4 | 1183 | |
58402054 | 1184 | if (bond_is_lb(bond)) { |
1da177e4 | 1185 | bond_alb_handle_active_change(bond, new_active); |
8f903c70 JV |
1186 | if (old_active) |
1187 | bond_set_slave_inactive_flags(old_active); | |
1188 | if (new_active) | |
1189 | bond_set_slave_active_flags(new_active); | |
1da177e4 LT |
1190 | } else { |
1191 | bond->curr_active_slave = new_active; | |
1192 | } | |
c3ade5ca JV |
1193 | |
1194 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) { | |
3d632c3f | 1195 | if (old_active) |
c3ade5ca | 1196 | bond_set_slave_inactive_flags(old_active); |
c3ade5ca JV |
1197 | |
1198 | if (new_active) { | |
1199 | bond_set_slave_active_flags(new_active); | |
2ab82852 | 1200 | |
709f8a45 OG |
1201 | if (bond->params.fail_over_mac) |
1202 | bond_do_fail_over_mac(bond, new_active, | |
1203 | old_active); | |
3915c1e8 | 1204 | |
709f8a45 | 1205 | bond->send_grat_arp = bond->params.num_grat_arp; |
b59f9f74 | 1206 | bond_send_gratuitous_arp(bond); |
01f3109d | 1207 | |
305d552a BH |
1208 | bond->send_unsol_na = bond->params.num_unsol_na; |
1209 | bond_send_unsolicited_na(bond); | |
1210 | ||
01f3109d OG |
1211 | write_unlock_bh(&bond->curr_slave_lock); |
1212 | read_unlock(&bond->lock); | |
1213 | ||
1214 | netdev_bonding_change(bond->dev); | |
1215 | ||
1216 | read_lock(&bond->lock); | |
1217 | write_lock_bh(&bond->curr_slave_lock); | |
7893b249 | 1218 | } |
c3ade5ca | 1219 | } |
1da177e4 LT |
1220 | } |
1221 | ||
1222 | /** | |
1223 | * bond_select_active_slave - select a new active slave, if needed | |
1224 | * @bond: our bonding struct | |
1225 | * | |
3d632c3f | 1226 | * This functions should be called when one of the following occurs: |
1da177e4 LT |
1227 | * - The old curr_active_slave has been released or lost its link. |
1228 | * - The primary_slave has got its link back. | |
1229 | * - A slave has got its link back and there's no old curr_active_slave. | |
1230 | * | |
3915c1e8 | 1231 | * Caller must hold bond->lock for read and curr_slave_lock for write_bh. |
1da177e4 | 1232 | */ |
a77b5325 | 1233 | void bond_select_active_slave(struct bonding *bond) |
1da177e4 LT |
1234 | { |
1235 | struct slave *best_slave; | |
ff59c456 | 1236 | int rv; |
1da177e4 LT |
1237 | |
1238 | best_slave = bond_find_best_slave(bond); | |
1239 | if (best_slave != bond->curr_active_slave) { | |
1240 | bond_change_active_slave(bond, best_slave); | |
ff59c456 JV |
1241 | rv = bond_set_carrier(bond); |
1242 | if (!rv) | |
1243 | return; | |
1244 | ||
1245 | if (netif_carrier_ok(bond->dev)) { | |
3d632c3f | 1246 | pr_info(DRV_NAME |
ff59c456 JV |
1247 | ": %s: first active interface up!\n", |
1248 | bond->dev->name); | |
1249 | } else { | |
3d632c3f | 1250 | pr_info(DRV_NAME ": %s: " |
ff59c456 JV |
1251 | "now running without any active interface !\n", |
1252 | bond->dev->name); | |
1253 | } | |
1da177e4 LT |
1254 | } |
1255 | } | |
1256 | ||
1257 | /*--------------------------- slave list handling ---------------------------*/ | |
1258 | ||
1259 | /* | |
1260 | * This function attaches the slave to the end of list. | |
1261 | * | |
1262 | * bond->lock held for writing by caller. | |
1263 | */ | |
1264 | static void bond_attach_slave(struct bonding *bond, struct slave *new_slave) | |
1265 | { | |
1266 | if (bond->first_slave == NULL) { /* attaching the first slave */ | |
1267 | new_slave->next = new_slave; | |
1268 | new_slave->prev = new_slave; | |
1269 | bond->first_slave = new_slave; | |
1270 | } else { | |
1271 | new_slave->next = bond->first_slave; | |
1272 | new_slave->prev = bond->first_slave->prev; | |
1273 | new_slave->next->prev = new_slave; | |
1274 | new_slave->prev->next = new_slave; | |
1275 | } | |
1276 | ||
1277 | bond->slave_cnt++; | |
1278 | } | |
1279 | ||
1280 | /* | |
1281 | * This function detaches the slave from the list. | |
1282 | * WARNING: no check is made to verify if the slave effectively | |
1283 | * belongs to <bond>. | |
1284 | * Nothing is freed on return, structures are just unchained. | |
1285 | * If any slave pointer in bond was pointing to <slave>, | |
1286 | * it should be changed by the calling function. | |
1287 | * | |
1288 | * bond->lock held for writing by caller. | |
1289 | */ | |
1290 | static void bond_detach_slave(struct bonding *bond, struct slave *slave) | |
1291 | { | |
3d632c3f | 1292 | if (slave->next) |
1da177e4 | 1293 | slave->next->prev = slave->prev; |
1da177e4 | 1294 | |
3d632c3f | 1295 | if (slave->prev) |
1da177e4 | 1296 | slave->prev->next = slave->next; |
1da177e4 LT |
1297 | |
1298 | if (bond->first_slave == slave) { /* slave is the first slave */ | |
1299 | if (bond->slave_cnt > 1) { /* there are more slave */ | |
1300 | bond->first_slave = slave->next; | |
1301 | } else { | |
1302 | bond->first_slave = NULL; /* slave was the last one */ | |
1303 | } | |
1304 | } | |
1305 | ||
1306 | slave->next = NULL; | |
1307 | slave->prev = NULL; | |
1308 | bond->slave_cnt--; | |
1309 | } | |
1310 | ||
1311 | /*---------------------------------- IOCTL ----------------------------------*/ | |
1312 | ||
4ad072c9 AB |
1313 | static int bond_sethwaddr(struct net_device *bond_dev, |
1314 | struct net_device *slave_dev) | |
1da177e4 | 1315 | { |
5a03cdb7 HE |
1316 | pr_debug("bond_dev=%p\n", bond_dev); |
1317 | pr_debug("slave_dev=%p\n", slave_dev); | |
1318 | pr_debug("slave_dev->addr_len=%d\n", slave_dev->addr_len); | |
1da177e4 LT |
1319 | memcpy(bond_dev->dev_addr, slave_dev->dev_addr, slave_dev->addr_len); |
1320 | return 0; | |
1321 | } | |
1322 | ||
7f353bf2 HX |
1323 | #define BOND_VLAN_FEATURES \ |
1324 | (NETIF_F_VLAN_CHALLENGED | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX | \ | |
1325 | NETIF_F_HW_VLAN_FILTER) | |
8531c5ff | 1326 | |
3d632c3f | 1327 | /* |
8e3babcd | 1328 | * Compute the common dev->feature set available to all slaves. Some |
7f353bf2 HX |
1329 | * feature bits are managed elsewhere, so preserve those feature bits |
1330 | * on the master device. | |
8531c5ff AK |
1331 | */ |
1332 | static int bond_compute_features(struct bonding *bond) | |
1333 | { | |
8531c5ff AK |
1334 | struct slave *slave; |
1335 | struct net_device *bond_dev = bond->dev; | |
7f353bf2 | 1336 | unsigned long features = bond_dev->features; |
278339a4 | 1337 | unsigned long vlan_features = 0; |
3158bf7d MS |
1338 | unsigned short max_hard_header_len = max((u16)ETH_HLEN, |
1339 | bond_dev->hard_header_len); | |
8e3babcd | 1340 | int i; |
8531c5ff | 1341 | |
7f353bf2 | 1342 | features &= ~(NETIF_F_ALL_CSUM | BOND_VLAN_FEATURES); |
b63365a2 HX |
1343 | features |= NETIF_F_GSO_MASK | NETIF_F_NO_CSUM; |
1344 | ||
1345 | if (!bond->first_slave) | |
1346 | goto done; | |
1347 | ||
1348 | features &= ~NETIF_F_ONE_FOR_ALL; | |
7f353bf2 | 1349 | |
278339a4 | 1350 | vlan_features = bond->first_slave->dev->vlan_features; |
54ef3137 | 1351 | bond_for_each_slave(bond, slave, i) { |
b63365a2 HX |
1352 | features = netdev_increment_features(features, |
1353 | slave->dev->features, | |
1354 | NETIF_F_ONE_FOR_ALL); | |
278339a4 JV |
1355 | vlan_features = netdev_increment_features(vlan_features, |
1356 | slave->dev->vlan_features, | |
1357 | NETIF_F_ONE_FOR_ALL); | |
54ef3137 JV |
1358 | if (slave->dev->hard_header_len > max_hard_header_len) |
1359 | max_hard_header_len = slave->dev->hard_header_len; | |
1360 | } | |
8531c5ff | 1361 | |
b63365a2 | 1362 | done: |
7f353bf2 | 1363 | features |= (bond_dev->features & BOND_VLAN_FEATURES); |
b63365a2 | 1364 | bond_dev->features = netdev_fix_features(features, NULL); |
278339a4 | 1365 | bond_dev->vlan_features = netdev_fix_features(vlan_features, NULL); |
54ef3137 | 1366 | bond_dev->hard_header_len = max_hard_header_len; |
8531c5ff AK |
1367 | |
1368 | return 0; | |
1369 | } | |
1370 | ||
872254dd MS |
1371 | static void bond_setup_by_slave(struct net_device *bond_dev, |
1372 | struct net_device *slave_dev) | |
1373 | { | |
454d7c9b | 1374 | struct bonding *bond = netdev_priv(bond_dev); |
d90a162a | 1375 | |
00829823 | 1376 | bond_dev->header_ops = slave_dev->header_ops; |
872254dd MS |
1377 | |
1378 | bond_dev->type = slave_dev->type; | |
1379 | bond_dev->hard_header_len = slave_dev->hard_header_len; | |
1380 | bond_dev->addr_len = slave_dev->addr_len; | |
1381 | ||
1382 | memcpy(bond_dev->broadcast, slave_dev->broadcast, | |
1383 | slave_dev->addr_len); | |
d90a162a | 1384 | bond->setup_by_slave = 1; |
872254dd MS |
1385 | } |
1386 | ||
1da177e4 | 1387 | /* enslave device <slave> to bond device <master> */ |
a77b5325 | 1388 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) |
1da177e4 | 1389 | { |
454d7c9b | 1390 | struct bonding *bond = netdev_priv(bond_dev); |
eb7cc59a | 1391 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
1392 | struct slave *new_slave = NULL; |
1393 | struct dev_mc_list *dmi; | |
1394 | struct sockaddr addr; | |
1395 | int link_reporting; | |
1396 | int old_features = bond_dev->features; | |
1397 | int res = 0; | |
1398 | ||
552709d5 | 1399 | if (!bond->params.use_carrier && slave_dev->ethtool_ops == NULL && |
eb7cc59a | 1400 | slave_ops->ndo_do_ioctl == NULL) { |
3d632c3f | 1401 | pr_warning(DRV_NAME |
4e0952c7 MW |
1402 | ": %s: Warning: no link monitoring support for %s\n", |
1403 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1404 | } |
1405 | ||
1406 | /* bond must be initialized by bond_open() before enslaving */ | |
1407 | if (!(bond_dev->flags & IFF_UP)) { | |
3d632c3f | 1408 | pr_warning(DRV_NAME |
6b1bf096 MS |
1409 | " %s: master_dev is not up in bond_enslave\n", |
1410 | bond_dev->name); | |
1da177e4 LT |
1411 | } |
1412 | ||
1413 | /* already enslaved */ | |
1414 | if (slave_dev->flags & IFF_SLAVE) { | |
5a03cdb7 | 1415 | pr_debug("Error, Device was already enslaved\n"); |
1da177e4 LT |
1416 | return -EBUSY; |
1417 | } | |
1418 | ||
1419 | /* vlan challenged mutual exclusion */ | |
1420 | /* no need to lock since we're protected by rtnl_lock */ | |
1421 | if (slave_dev->features & NETIF_F_VLAN_CHALLENGED) { | |
5a03cdb7 | 1422 | pr_debug("%s: NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
1da177e4 | 1423 | if (!list_empty(&bond->vlan_list)) { |
3d632c3f | 1424 | pr_err(DRV_NAME |
4e0952c7 | 1425 | ": %s: Error: cannot enslave VLAN " |
1da177e4 | 1426 | "challenged slave %s on VLAN enabled " |
4e0952c7 | 1427 | "bond %s\n", bond_dev->name, slave_dev->name, |
1da177e4 LT |
1428 | bond_dev->name); |
1429 | return -EPERM; | |
1430 | } else { | |
3d632c3f | 1431 | pr_warning(DRV_NAME |
4e0952c7 | 1432 | ": %s: Warning: enslaved VLAN challenged " |
1da177e4 LT |
1433 | "slave %s. Adding VLANs will be blocked as " |
1434 | "long as %s is part of bond %s\n", | |
4e0952c7 | 1435 | bond_dev->name, slave_dev->name, slave_dev->name, |
1da177e4 LT |
1436 | bond_dev->name); |
1437 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; | |
1438 | } | |
1439 | } else { | |
5a03cdb7 | 1440 | pr_debug("%s: ! NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
1da177e4 LT |
1441 | if (bond->slave_cnt == 0) { |
1442 | /* First slave, and it is not VLAN challenged, | |
1443 | * so remove the block of adding VLANs over the bond. | |
1444 | */ | |
1445 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; | |
1446 | } | |
1447 | } | |
1448 | ||
217df670 JV |
1449 | /* |
1450 | * Old ifenslave binaries are no longer supported. These can | |
3d632c3f | 1451 | * be identified with moderate accuracy by the state of the slave: |
217df670 JV |
1452 | * the current ifenslave will set the interface down prior to |
1453 | * enslaving it; the old ifenslave will not. | |
1454 | */ | |
1455 | if ((slave_dev->flags & IFF_UP)) { | |
3d632c3f | 1456 | pr_err(DRV_NAME ": %s is up. " |
217df670 JV |
1457 | "This may be due to an out of date ifenslave.\n", |
1458 | slave_dev->name); | |
1459 | res = -EPERM; | |
1460 | goto err_undo_flags; | |
1461 | } | |
1da177e4 | 1462 | |
872254dd MS |
1463 | /* set bonding device ether type by slave - bonding netdevices are |
1464 | * created with ether_setup, so when the slave type is not ARPHRD_ETHER | |
1465 | * there is a need to override some of the type dependent attribs/funcs. | |
1466 | * | |
1467 | * bond ether type mutual exclusion - don't allow slaves of dissimilar | |
1468 | * ether type (eg ARPHRD_ETHER and ARPHRD_INFINIBAND) share the same bond | |
1469 | */ | |
1470 | if (bond->slave_cnt == 0) { | |
e36b9d16 MS |
1471 | if (bond_dev->type != slave_dev->type) { |
1472 | dev_close(bond_dev); | |
1473 | pr_debug("%s: change device type from %d to %d\n", | |
1474 | bond_dev->name, bond_dev->type, slave_dev->type); | |
1475 | if (slave_dev->type != ARPHRD_ETHER) | |
1476 | bond_setup_by_slave(bond_dev, slave_dev); | |
1477 | else | |
1478 | ether_setup(bond_dev); | |
1479 | dev_open(bond_dev); | |
1480 | } | |
872254dd | 1481 | } else if (bond_dev->type != slave_dev->type) { |
3d632c3f | 1482 | pr_err(DRV_NAME ": %s ether type (%d) is different " |
872254dd MS |
1483 | "from other slaves (%d), can not enslave it.\n", |
1484 | slave_dev->name, | |
1485 | slave_dev->type, bond_dev->type); | |
1486 | res = -EINVAL; | |
1487 | goto err_undo_flags; | |
1488 | } | |
1489 | ||
eb7cc59a | 1490 | if (slave_ops->ndo_set_mac_address == NULL) { |
2ab82852 | 1491 | if (bond->slave_cnt == 0) { |
3d632c3f | 1492 | pr_warning(DRV_NAME |
dd957c57 JV |
1493 | ": %s: Warning: The first slave device " |
1494 | "specified does not support setting the MAC " | |
3915c1e8 | 1495 | "address. Setting fail_over_mac to active.", |
dd957c57 | 1496 | bond_dev->name); |
3915c1e8 JV |
1497 | bond->params.fail_over_mac = BOND_FOM_ACTIVE; |
1498 | } else if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { | |
3d632c3f | 1499 | pr_err(DRV_NAME |
dd957c57 JV |
1500 | ": %s: Error: The slave device specified " |
1501 | "does not support setting the MAC address, " | |
3915c1e8 | 1502 | "but fail_over_mac is not set to active.\n" |
2ab82852 MS |
1503 | , bond_dev->name); |
1504 | res = -EOPNOTSUPP; | |
1505 | goto err_undo_flags; | |
1506 | } | |
1da177e4 LT |
1507 | } |
1508 | ||
243cb4e5 | 1509 | new_slave = kzalloc(sizeof(struct slave), GFP_KERNEL); |
1da177e4 LT |
1510 | if (!new_slave) { |
1511 | res = -ENOMEM; | |
1512 | goto err_undo_flags; | |
1513 | } | |
1514 | ||
1da177e4 LT |
1515 | /* save slave's original flags before calling |
1516 | * netdev_set_master and dev_open | |
1517 | */ | |
1518 | new_slave->original_flags = slave_dev->flags; | |
1519 | ||
217df670 JV |
1520 | /* |
1521 | * Save slave's original ("permanent") mac address for modes | |
1522 | * that need it, and for restoring it upon release, and then | |
1523 | * set it to the master's address | |
1524 | */ | |
1525 | memcpy(new_slave->perm_hwaddr, slave_dev->dev_addr, ETH_ALEN); | |
1da177e4 | 1526 | |
dd957c57 | 1527 | if (!bond->params.fail_over_mac) { |
2ab82852 MS |
1528 | /* |
1529 | * Set slave to master's mac address. The application already | |
1530 | * set the master's mac address to that of the first slave | |
1531 | */ | |
1532 | memcpy(addr.sa_data, bond_dev->dev_addr, bond_dev->addr_len); | |
1533 | addr.sa_family = slave_dev->type; | |
1534 | res = dev_set_mac_address(slave_dev, &addr); | |
1535 | if (res) { | |
5a03cdb7 | 1536 | pr_debug("Error %d calling set_mac_address\n", res); |
2ab82852 MS |
1537 | goto err_free; |
1538 | } | |
217df670 | 1539 | } |
1da177e4 | 1540 | |
c2edacf8 JV |
1541 | res = netdev_set_master(slave_dev, bond_dev); |
1542 | if (res) { | |
5a03cdb7 | 1543 | pr_debug("Error %d calling netdev_set_master\n", res); |
569f0c4d | 1544 | goto err_restore_mac; |
c2edacf8 | 1545 | } |
217df670 JV |
1546 | /* open the slave since the application closed it */ |
1547 | res = dev_open(slave_dev); | |
1548 | if (res) { | |
3d632c3f | 1549 | pr_debug("Opening slave %s failed\n", slave_dev->name); |
569f0c4d | 1550 | goto err_unset_master; |
1da177e4 LT |
1551 | } |
1552 | ||
1da177e4 | 1553 | new_slave->dev = slave_dev; |
0b680e75 | 1554 | slave_dev->priv_flags |= IFF_BONDING; |
1da177e4 | 1555 | |
58402054 | 1556 | if (bond_is_lb(bond)) { |
1da177e4 LT |
1557 | /* bond_alb_init_slave() must be called before all other stages since |
1558 | * it might fail and we do not want to have to undo everything | |
1559 | */ | |
1560 | res = bond_alb_init_slave(bond, new_slave); | |
3d632c3f | 1561 | if (res) |
569f0c4d | 1562 | goto err_close; |
1da177e4 LT |
1563 | } |
1564 | ||
1565 | /* If the mode USES_PRIMARY, then the new slave gets the | |
1566 | * master's promisc (and mc) settings only if it becomes the | |
1567 | * curr_active_slave, and that is taken care of later when calling | |
1568 | * bond_change_active() | |
1569 | */ | |
1570 | if (!USES_PRIMARY(bond->params.mode)) { | |
1571 | /* set promiscuity level to new slave */ | |
1572 | if (bond_dev->flags & IFF_PROMISC) { | |
7e1a1ac1 WC |
1573 | res = dev_set_promiscuity(slave_dev, 1); |
1574 | if (res) | |
1575 | goto err_close; | |
1da177e4 LT |
1576 | } |
1577 | ||
1578 | /* set allmulti level to new slave */ | |
1579 | if (bond_dev->flags & IFF_ALLMULTI) { | |
7e1a1ac1 WC |
1580 | res = dev_set_allmulti(slave_dev, 1); |
1581 | if (res) | |
1582 | goto err_close; | |
1da177e4 LT |
1583 | } |
1584 | ||
b9e40857 | 1585 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 1586 | /* upload master's mc_list to new slave */ |
3d632c3f SH |
1587 | for (dmi = bond_dev->mc_list; dmi; dmi = dmi->next) |
1588 | dev_mc_add(slave_dev, dmi->dmi_addr, | |
1589 | dmi->dmi_addrlen, 0); | |
b9e40857 | 1590 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
1591 | } |
1592 | ||
1593 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1594 | /* add lacpdu mc addr to mc list */ | |
1595 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; | |
1596 | ||
1597 | dev_mc_add(slave_dev, lacpdu_multicast, ETH_ALEN, 0); | |
1598 | } | |
1599 | ||
1600 | bond_add_vlans_on_slave(bond, slave_dev); | |
1601 | ||
1602 | write_lock_bh(&bond->lock); | |
1603 | ||
1604 | bond_attach_slave(bond, new_slave); | |
1605 | ||
1606 | new_slave->delay = 0; | |
1607 | new_slave->link_failure_count = 0; | |
1608 | ||
8531c5ff AK |
1609 | bond_compute_features(bond); |
1610 | ||
3915c1e8 JV |
1611 | write_unlock_bh(&bond->lock); |
1612 | ||
1613 | read_lock(&bond->lock); | |
1614 | ||
f5b2b966 JV |
1615 | new_slave->last_arp_rx = jiffies; |
1616 | ||
1da177e4 LT |
1617 | if (bond->params.miimon && !bond->params.use_carrier) { |
1618 | link_reporting = bond_check_dev_link(bond, slave_dev, 1); | |
1619 | ||
1620 | if ((link_reporting == -1) && !bond->params.arp_interval) { | |
1621 | /* | |
1622 | * miimon is set but a bonded network driver | |
1623 | * does not support ETHTOOL/MII and | |
1624 | * arp_interval is not set. Note: if | |
1625 | * use_carrier is enabled, we will never go | |
1626 | * here (because netif_carrier is always | |
1627 | * supported); thus, we don't need to change | |
1628 | * the messages for netif_carrier. | |
1629 | */ | |
3d632c3f | 1630 | pr_warning(DRV_NAME |
4e0952c7 | 1631 | ": %s: Warning: MII and ETHTOOL support not " |
1da177e4 LT |
1632 | "available for interface %s, and " |
1633 | "arp_interval/arp_ip_target module parameters " | |
1634 | "not specified, thus bonding will not detect " | |
1635 | "link failures! see bonding.txt for details.\n", | |
4e0952c7 | 1636 | bond_dev->name, slave_dev->name); |
1da177e4 LT |
1637 | } else if (link_reporting == -1) { |
1638 | /* unable get link status using mii/ethtool */ | |
3d632c3f | 1639 | pr_warning(DRV_NAME |
4e0952c7 | 1640 | ": %s: Warning: can't get link status from " |
1da177e4 LT |
1641 | "interface %s; the network driver associated " |
1642 | "with this interface does not support MII or " | |
1643 | "ETHTOOL link status reporting, thus miimon " | |
1644 | "has no effect on this interface.\n", | |
4e0952c7 | 1645 | bond_dev->name, slave_dev->name); |
1da177e4 LT |
1646 | } |
1647 | } | |
1648 | ||
1649 | /* check for initial state */ | |
1650 | if (!bond->params.miimon || | |
1651 | (bond_check_dev_link(bond, slave_dev, 0) == BMSR_LSTATUS)) { | |
1652 | if (bond->params.updelay) { | |
5a03cdb7 | 1653 | pr_debug("Initial state of slave_dev is " |
1da177e4 LT |
1654 | "BOND_LINK_BACK\n"); |
1655 | new_slave->link = BOND_LINK_BACK; | |
1656 | new_slave->delay = bond->params.updelay; | |
1657 | } else { | |
5a03cdb7 | 1658 | pr_debug("Initial state of slave_dev is " |
1da177e4 LT |
1659 | "BOND_LINK_UP\n"); |
1660 | new_slave->link = BOND_LINK_UP; | |
1661 | } | |
1662 | new_slave->jiffies = jiffies; | |
1663 | } else { | |
5a03cdb7 | 1664 | pr_debug("Initial state of slave_dev is " |
1da177e4 LT |
1665 | "BOND_LINK_DOWN\n"); |
1666 | new_slave->link = BOND_LINK_DOWN; | |
1667 | } | |
1668 | ||
1669 | if (bond_update_speed_duplex(new_slave) && | |
1670 | (new_slave->link != BOND_LINK_DOWN)) { | |
3d632c3f | 1671 | pr_warning(DRV_NAME |
4e0952c7 | 1672 | ": %s: Warning: failed to get speed and duplex from %s, " |
1da177e4 | 1673 | "assumed to be 100Mb/sec and Full.\n", |
4e0952c7 | 1674 | bond_dev->name, new_slave->dev->name); |
1da177e4 LT |
1675 | |
1676 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3d632c3f | 1677 | pr_warning(DRV_NAME |
4e0952c7 | 1678 | ": %s: Warning: Operation of 802.3ad mode requires ETHTOOL " |
1da177e4 | 1679 | "support in base driver for proper aggregator " |
4e0952c7 | 1680 | "selection.\n", bond_dev->name); |
1da177e4 LT |
1681 | } |
1682 | } | |
1683 | ||
1684 | if (USES_PRIMARY(bond->params.mode) && bond->params.primary[0]) { | |
1685 | /* if there is a primary slave, remember it */ | |
3d632c3f | 1686 | if (strcmp(bond->params.primary, new_slave->dev->name) == 0) |
1da177e4 | 1687 | bond->primary_slave = new_slave; |
1da177e4 LT |
1688 | } |
1689 | ||
3915c1e8 JV |
1690 | write_lock_bh(&bond->curr_slave_lock); |
1691 | ||
1da177e4 LT |
1692 | switch (bond->params.mode) { |
1693 | case BOND_MODE_ACTIVEBACKUP: | |
8a8e447b JV |
1694 | bond_set_slave_inactive_flags(new_slave); |
1695 | bond_select_active_slave(bond); | |
1da177e4 LT |
1696 | break; |
1697 | case BOND_MODE_8023AD: | |
1698 | /* in 802.3ad mode, the internal mechanism | |
1699 | * will activate the slaves in the selected | |
1700 | * aggregator | |
1701 | */ | |
1702 | bond_set_slave_inactive_flags(new_slave); | |
1703 | /* if this is the first slave */ | |
1704 | if (bond->slave_cnt == 1) { | |
1705 | SLAVE_AD_INFO(new_slave).id = 1; | |
1706 | /* Initialize AD with the number of times that the AD timer is called in 1 second | |
1707 | * can be called only after the mac address of the bond is set | |
1708 | */ | |
1709 | bond_3ad_initialize(bond, 1000/AD_TIMER_INTERVAL, | |
1710 | bond->params.lacp_fast); | |
1711 | } else { | |
1712 | SLAVE_AD_INFO(new_slave).id = | |
1713 | SLAVE_AD_INFO(new_slave->prev).id + 1; | |
1714 | } | |
1715 | ||
1716 | bond_3ad_bind_slave(new_slave); | |
1717 | break; | |
1718 | case BOND_MODE_TLB: | |
1719 | case BOND_MODE_ALB: | |
1720 | new_slave->state = BOND_STATE_ACTIVE; | |
059fe7a5 | 1721 | bond_set_slave_inactive_flags(new_slave); |
5a29f789 | 1722 | bond_select_active_slave(bond); |
1da177e4 LT |
1723 | break; |
1724 | default: | |
5a03cdb7 | 1725 | pr_debug("This slave is always active in trunk mode\n"); |
1da177e4 LT |
1726 | |
1727 | /* always active in trunk mode */ | |
1728 | new_slave->state = BOND_STATE_ACTIVE; | |
1729 | ||
1730 | /* In trunking mode there is little meaning to curr_active_slave | |
1731 | * anyway (it holds no special properties of the bond device), | |
1732 | * so we can change it without calling change_active_interface() | |
1733 | */ | |
3d632c3f | 1734 | if (!bond->curr_active_slave) |
1da177e4 | 1735 | bond->curr_active_slave = new_slave; |
3d632c3f | 1736 | |
1da177e4 LT |
1737 | break; |
1738 | } /* switch(bond_mode) */ | |
1739 | ||
3915c1e8 JV |
1740 | write_unlock_bh(&bond->curr_slave_lock); |
1741 | ||
ff59c456 JV |
1742 | bond_set_carrier(bond); |
1743 | ||
3915c1e8 | 1744 | read_unlock(&bond->lock); |
1da177e4 | 1745 | |
b76cdba9 MW |
1746 | res = bond_create_slave_symlinks(bond_dev, slave_dev); |
1747 | if (res) | |
569f0c4d | 1748 | goto err_close; |
b76cdba9 | 1749 | |
3d632c3f | 1750 | pr_info(DRV_NAME |
1da177e4 LT |
1751 | ": %s: enslaving %s as a%s interface with a%s link.\n", |
1752 | bond_dev->name, slave_dev->name, | |
1753 | new_slave->state == BOND_STATE_ACTIVE ? "n active" : " backup", | |
1754 | new_slave->link != BOND_LINK_DOWN ? "n up" : " down"); | |
1755 | ||
1756 | /* enslave is successful */ | |
1757 | return 0; | |
1758 | ||
1759 | /* Undo stages on error */ | |
1da177e4 LT |
1760 | err_close: |
1761 | dev_close(slave_dev); | |
1762 | ||
569f0c4d JV |
1763 | err_unset_master: |
1764 | netdev_set_master(slave_dev, NULL); | |
1765 | ||
1da177e4 | 1766 | err_restore_mac: |
dd957c57 | 1767 | if (!bond->params.fail_over_mac) { |
3915c1e8 JV |
1768 | /* XXX TODO - fom follow mode needs to change master's |
1769 | * MAC if this slave's MAC is in use by the bond, or at | |
1770 | * least print a warning. | |
1771 | */ | |
2ab82852 MS |
1772 | memcpy(addr.sa_data, new_slave->perm_hwaddr, ETH_ALEN); |
1773 | addr.sa_family = slave_dev->type; | |
1774 | dev_set_mac_address(slave_dev, &addr); | |
1775 | } | |
1da177e4 LT |
1776 | |
1777 | err_free: | |
1778 | kfree(new_slave); | |
1779 | ||
1780 | err_undo_flags: | |
1781 | bond_dev->features = old_features; | |
3d632c3f | 1782 | |
1da177e4 LT |
1783 | return res; |
1784 | } | |
1785 | ||
1786 | /* | |
1787 | * Try to release the slave device <slave> from the bond device <master> | |
1788 | * It is legal to access curr_active_slave without a lock because all the function | |
1789 | * is write-locked. | |
1790 | * | |
1791 | * The rules for slave state should be: | |
1792 | * for Active/Backup: | |
1793 | * Active stays on all backups go down | |
1794 | * for Bonded connections: | |
1795 | * The first up interface should be left on and all others downed. | |
1796 | */ | |
a77b5325 | 1797 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev) |
1da177e4 | 1798 | { |
454d7c9b | 1799 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
1800 | struct slave *slave, *oldcurrent; |
1801 | struct sockaddr addr; | |
1da177e4 LT |
1802 | |
1803 | /* slave is not a slave or master is not master of this slave */ | |
1804 | if (!(slave_dev->flags & IFF_SLAVE) || | |
1805 | (slave_dev->master != bond_dev)) { | |
3d632c3f | 1806 | pr_err(DRV_NAME |
4e0952c7 | 1807 | ": %s: Error: cannot release %s.\n", |
1da177e4 LT |
1808 | bond_dev->name, slave_dev->name); |
1809 | return -EINVAL; | |
1810 | } | |
1811 | ||
1812 | write_lock_bh(&bond->lock); | |
1813 | ||
1814 | slave = bond_get_slave_by_dev(bond, slave_dev); | |
1815 | if (!slave) { | |
1816 | /* not a slave of this bond */ | |
3d632c3f | 1817 | pr_info(DRV_NAME |
1da177e4 LT |
1818 | ": %s: %s not enslaved\n", |
1819 | bond_dev->name, slave_dev->name); | |
f5e2a7b2 | 1820 | write_unlock_bh(&bond->lock); |
1da177e4 LT |
1821 | return -EINVAL; |
1822 | } | |
1823 | ||
3915c1e8 | 1824 | if (!bond->params.fail_over_mac) { |
89c76c62 SH |
1825 | if (!compare_ether_addr(bond_dev->dev_addr, slave->perm_hwaddr) |
1826 | && bond->slave_cnt > 1) | |
3d632c3f | 1827 | pr_warning(DRV_NAME |
3915c1e8 | 1828 | ": %s: Warning: the permanent HWaddr of %s - " |
e174961c | 1829 | "%pM - is still in use by %s. " |
3915c1e8 JV |
1830 | "Set the HWaddr of %s to a different address " |
1831 | "to avoid conflicts.\n", | |
1832 | bond_dev->name, slave_dev->name, | |
e174961c | 1833 | slave->perm_hwaddr, |
3915c1e8 | 1834 | bond_dev->name, slave_dev->name); |
1da177e4 LT |
1835 | } |
1836 | ||
1837 | /* Inform AD package of unbinding of slave. */ | |
1838 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1839 | /* must be called before the slave is | |
1840 | * detached from the list | |
1841 | */ | |
1842 | bond_3ad_unbind_slave(slave); | |
1843 | } | |
1844 | ||
3d632c3f | 1845 | pr_info(DRV_NAME |
1da177e4 LT |
1846 | ": %s: releasing %s interface %s\n", |
1847 | bond_dev->name, | |
1848 | (slave->state == BOND_STATE_ACTIVE) | |
1849 | ? "active" : "backup", | |
1850 | slave_dev->name); | |
1851 | ||
1852 | oldcurrent = bond->curr_active_slave; | |
1853 | ||
1854 | bond->current_arp_slave = NULL; | |
1855 | ||
1856 | /* release the slave from its bond */ | |
1857 | bond_detach_slave(bond, slave); | |
1858 | ||
8531c5ff AK |
1859 | bond_compute_features(bond); |
1860 | ||
3d632c3f | 1861 | if (bond->primary_slave == slave) |
1da177e4 | 1862 | bond->primary_slave = NULL; |
1da177e4 | 1863 | |
3d632c3f | 1864 | if (oldcurrent == slave) |
1da177e4 | 1865 | bond_change_active_slave(bond, NULL); |
1da177e4 | 1866 | |
58402054 | 1867 | if (bond_is_lb(bond)) { |
1da177e4 LT |
1868 | /* Must be called only after the slave has been |
1869 | * detached from the list and the curr_active_slave | |
1870 | * has been cleared (if our_slave == old_current), | |
1871 | * but before a new active slave is selected. | |
1872 | */ | |
2543331d | 1873 | write_unlock_bh(&bond->lock); |
1da177e4 | 1874 | bond_alb_deinit_slave(bond, slave); |
2543331d | 1875 | write_lock_bh(&bond->lock); |
1da177e4 LT |
1876 | } |
1877 | ||
059fe7a5 JV |
1878 | if (oldcurrent == slave) { |
1879 | /* | |
1880 | * Note that we hold RTNL over this sequence, so there | |
1881 | * is no concern that another slave add/remove event | |
1882 | * will interfere. | |
1883 | */ | |
1884 | write_unlock_bh(&bond->lock); | |
1885 | read_lock(&bond->lock); | |
1886 | write_lock_bh(&bond->curr_slave_lock); | |
1887 | ||
1da177e4 LT |
1888 | bond_select_active_slave(bond); |
1889 | ||
059fe7a5 JV |
1890 | write_unlock_bh(&bond->curr_slave_lock); |
1891 | read_unlock(&bond->lock); | |
1892 | write_lock_bh(&bond->lock); | |
1893 | } | |
1894 | ||
1da177e4 | 1895 | if (bond->slave_cnt == 0) { |
ff59c456 JV |
1896 | bond_set_carrier(bond); |
1897 | ||
1da177e4 LT |
1898 | /* if the last slave was removed, zero the mac address |
1899 | * of the master so it will be set by the application | |
1900 | * to the mac address of the first slave | |
1901 | */ | |
1902 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); | |
1903 | ||
1904 | if (list_empty(&bond->vlan_list)) { | |
1905 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; | |
1906 | } else { | |
3d632c3f | 1907 | pr_warning(DRV_NAME |
4e0952c7 | 1908 | ": %s: Warning: clearing HW address of %s while it " |
1da177e4 | 1909 | "still has VLANs.\n", |
4e0952c7 | 1910 | bond_dev->name, bond_dev->name); |
3d632c3f | 1911 | pr_warning(DRV_NAME |
4e0952c7 MW |
1912 | ": %s: When re-adding slaves, make sure the bond's " |
1913 | "HW address matches its VLANs'.\n", | |
1914 | bond_dev->name); | |
1da177e4 LT |
1915 | } |
1916 | } else if ((bond_dev->features & NETIF_F_VLAN_CHALLENGED) && | |
1917 | !bond_has_challenged_slaves(bond)) { | |
3d632c3f | 1918 | pr_info(DRV_NAME |
4e0952c7 | 1919 | ": %s: last VLAN challenged slave %s " |
1da177e4 | 1920 | "left bond %s. VLAN blocking is removed\n", |
4e0952c7 | 1921 | bond_dev->name, slave_dev->name, bond_dev->name); |
1da177e4 LT |
1922 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; |
1923 | } | |
1924 | ||
1925 | write_unlock_bh(&bond->lock); | |
1926 | ||
b76cdba9 MW |
1927 | /* must do this from outside any spinlocks */ |
1928 | bond_destroy_slave_symlinks(bond_dev, slave_dev); | |
1929 | ||
1da177e4 LT |
1930 | bond_del_vlans_from_slave(bond, slave_dev); |
1931 | ||
1932 | /* If the mode USES_PRIMARY, then we should only remove its | |
1933 | * promisc and mc settings if it was the curr_active_slave, but that was | |
1934 | * already taken care of above when we detached the slave | |
1935 | */ | |
1936 | if (!USES_PRIMARY(bond->params.mode)) { | |
1937 | /* unset promiscuity level from slave */ | |
3d632c3f | 1938 | if (bond_dev->flags & IFF_PROMISC) |
1da177e4 | 1939 | dev_set_promiscuity(slave_dev, -1); |
1da177e4 LT |
1940 | |
1941 | /* unset allmulti level from slave */ | |
3d632c3f | 1942 | if (bond_dev->flags & IFF_ALLMULTI) |
1da177e4 | 1943 | dev_set_allmulti(slave_dev, -1); |
1da177e4 LT |
1944 | |
1945 | /* flush master's mc_list from slave */ | |
b9e40857 | 1946 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 1947 | bond_mc_list_flush(bond_dev, slave_dev); |
b9e40857 | 1948 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
1949 | } |
1950 | ||
1951 | netdev_set_master(slave_dev, NULL); | |
1952 | ||
1953 | /* close slave before restoring its mac address */ | |
1954 | dev_close(slave_dev); | |
1955 | ||
3915c1e8 | 1956 | if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { |
2ab82852 MS |
1957 | /* restore original ("permanent") mac address */ |
1958 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); | |
1959 | addr.sa_family = slave_dev->type; | |
1960 | dev_set_mac_address(slave_dev, &addr); | |
1961 | } | |
1da177e4 | 1962 | |
8f903c70 | 1963 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
f5b2b966 JV |
1964 | IFF_SLAVE_INACTIVE | IFF_BONDING | |
1965 | IFF_SLAVE_NEEDARP); | |
1da177e4 LT |
1966 | |
1967 | kfree(slave); | |
1968 | ||
1969 | return 0; /* deletion OK */ | |
1970 | } | |
1971 | ||
d90a162a MS |
1972 | /* |
1973 | * Destroy a bonding device. | |
1974 | * Must be under rtnl_lock when this function is called. | |
1975 | */ | |
9e71626c | 1976 | static void bond_uninit(struct net_device *bond_dev) |
a434e43f | 1977 | { |
244ef9b9 | 1978 | struct bonding *bond = netdev_priv(bond_dev); |
a434e43f | 1979 | |
9e71626c SH |
1980 | bond_deinit(bond_dev); |
1981 | bond_destroy_sysfs_entry(bond); | |
1982 | ||
a434e43f JV |
1983 | if (bond->wq) |
1984 | destroy_workqueue(bond->wq); | |
1985 | ||
1986 | netif_addr_lock_bh(bond_dev); | |
1987 | bond_mc_list_destroy(bond); | |
1988 | netif_addr_unlock_bh(bond_dev); | |
a434e43f JV |
1989 | } |
1990 | ||
d90a162a | 1991 | /* |
3d632c3f | 1992 | * First release a slave and than destroy the bond if no more slaves are left. |
d90a162a MS |
1993 | * Must be under rtnl_lock when this function is called. |
1994 | */ | |
3d632c3f SH |
1995 | int bond_release_and_destroy(struct net_device *bond_dev, |
1996 | struct net_device *slave_dev) | |
d90a162a | 1997 | { |
454d7c9b | 1998 | struct bonding *bond = netdev_priv(bond_dev); |
d90a162a MS |
1999 | int ret; |
2000 | ||
2001 | ret = bond_release(bond_dev, slave_dev); | |
2002 | if ((ret == 0) && (bond->slave_cnt == 0)) { | |
3d632c3f | 2003 | pr_info(DRV_NAME ": %s: destroying bond %s.\n", |
d90a162a | 2004 | bond_dev->name, bond_dev->name); |
9e71626c | 2005 | unregister_netdevice(bond_dev); |
d90a162a MS |
2006 | } |
2007 | return ret; | |
2008 | } | |
2009 | ||
1da177e4 LT |
2010 | /* |
2011 | * This function releases all slaves. | |
2012 | */ | |
2013 | static int bond_release_all(struct net_device *bond_dev) | |
2014 | { | |
454d7c9b | 2015 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2016 | struct slave *slave; |
2017 | struct net_device *slave_dev; | |
2018 | struct sockaddr addr; | |
2019 | ||
2020 | write_lock_bh(&bond->lock); | |
2021 | ||
ff59c456 JV |
2022 | netif_carrier_off(bond_dev); |
2023 | ||
3d632c3f | 2024 | if (bond->slave_cnt == 0) |
1da177e4 | 2025 | goto out; |
1da177e4 LT |
2026 | |
2027 | bond->current_arp_slave = NULL; | |
2028 | bond->primary_slave = NULL; | |
2029 | bond_change_active_slave(bond, NULL); | |
2030 | ||
2031 | while ((slave = bond->first_slave) != NULL) { | |
2032 | /* Inform AD package of unbinding of slave | |
2033 | * before slave is detached from the list. | |
2034 | */ | |
3d632c3f | 2035 | if (bond->params.mode == BOND_MODE_8023AD) |
1da177e4 | 2036 | bond_3ad_unbind_slave(slave); |
1da177e4 LT |
2037 | |
2038 | slave_dev = slave->dev; | |
2039 | bond_detach_slave(bond, slave); | |
2040 | ||
2543331d JV |
2041 | /* now that the slave is detached, unlock and perform |
2042 | * all the undo steps that should not be called from | |
2043 | * within a lock. | |
2044 | */ | |
2045 | write_unlock_bh(&bond->lock); | |
2046 | ||
58402054 | 2047 | if (bond_is_lb(bond)) { |
1da177e4 LT |
2048 | /* must be called only after the slave |
2049 | * has been detached from the list | |
2050 | */ | |
2051 | bond_alb_deinit_slave(bond, slave); | |
2052 | } | |
2053 | ||
8531c5ff AK |
2054 | bond_compute_features(bond); |
2055 | ||
b76cdba9 | 2056 | bond_destroy_slave_symlinks(bond_dev, slave_dev); |
1da177e4 LT |
2057 | bond_del_vlans_from_slave(bond, slave_dev); |
2058 | ||
2059 | /* If the mode USES_PRIMARY, then we should only remove its | |
2060 | * promisc and mc settings if it was the curr_active_slave, but that was | |
2061 | * already taken care of above when we detached the slave | |
2062 | */ | |
2063 | if (!USES_PRIMARY(bond->params.mode)) { | |
2064 | /* unset promiscuity level from slave */ | |
3d632c3f | 2065 | if (bond_dev->flags & IFF_PROMISC) |
1da177e4 | 2066 | dev_set_promiscuity(slave_dev, -1); |
1da177e4 LT |
2067 | |
2068 | /* unset allmulti level from slave */ | |
3d632c3f | 2069 | if (bond_dev->flags & IFF_ALLMULTI) |
1da177e4 | 2070 | dev_set_allmulti(slave_dev, -1); |
1da177e4 LT |
2071 | |
2072 | /* flush master's mc_list from slave */ | |
b9e40857 | 2073 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 2074 | bond_mc_list_flush(bond_dev, slave_dev); |
b9e40857 | 2075 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
2076 | } |
2077 | ||
2078 | netdev_set_master(slave_dev, NULL); | |
2079 | ||
2080 | /* close slave before restoring its mac address */ | |
2081 | dev_close(slave_dev); | |
2082 | ||
dd957c57 | 2083 | if (!bond->params.fail_over_mac) { |
2ab82852 MS |
2084 | /* restore original ("permanent") mac address*/ |
2085 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); | |
2086 | addr.sa_family = slave_dev->type; | |
2087 | dev_set_mac_address(slave_dev, &addr); | |
2088 | } | |
1da177e4 | 2089 | |
8f903c70 JV |
2090 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
2091 | IFF_SLAVE_INACTIVE); | |
1da177e4 LT |
2092 | |
2093 | kfree(slave); | |
2094 | ||
2095 | /* re-acquire the lock before getting the next slave */ | |
2096 | write_lock_bh(&bond->lock); | |
2097 | } | |
2098 | ||
2099 | /* zero the mac address of the master so it will be | |
2100 | * set by the application to the mac address of the | |
2101 | * first slave | |
2102 | */ | |
2103 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); | |
2104 | ||
3d632c3f | 2105 | if (list_empty(&bond->vlan_list)) |
1da177e4 | 2106 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
3d632c3f SH |
2107 | else { |
2108 | pr_warning(DRV_NAME | |
4e0952c7 | 2109 | ": %s: Warning: clearing HW address of %s while it " |
1da177e4 | 2110 | "still has VLANs.\n", |
4e0952c7 | 2111 | bond_dev->name, bond_dev->name); |
3d632c3f | 2112 | pr_warning(DRV_NAME |
4e0952c7 MW |
2113 | ": %s: When re-adding slaves, make sure the bond's " |
2114 | "HW address matches its VLANs'.\n", | |
2115 | bond_dev->name); | |
1da177e4 LT |
2116 | } |
2117 | ||
3d632c3f | 2118 | pr_info(DRV_NAME |
1da177e4 LT |
2119 | ": %s: released all slaves\n", |
2120 | bond_dev->name); | |
2121 | ||
2122 | out: | |
2123 | write_unlock_bh(&bond->lock); | |
2124 | ||
2125 | return 0; | |
2126 | } | |
2127 | ||
2128 | /* | |
2129 | * This function changes the active slave to slave <slave_dev>. | |
2130 | * It returns -EINVAL in the following cases. | |
2131 | * - <slave_dev> is not found in the list. | |
2132 | * - There is not active slave now. | |
2133 | * - <slave_dev> is already active. | |
2134 | * - The link state of <slave_dev> is not BOND_LINK_UP. | |
2135 | * - <slave_dev> is not running. | |
3d632c3f SH |
2136 | * In these cases, this function does nothing. |
2137 | * In the other cases, current_slave pointer is changed and 0 is returned. | |
1da177e4 LT |
2138 | */ |
2139 | static int bond_ioctl_change_active(struct net_device *bond_dev, struct net_device *slave_dev) | |
2140 | { | |
454d7c9b | 2141 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2142 | struct slave *old_active = NULL; |
2143 | struct slave *new_active = NULL; | |
2144 | int res = 0; | |
2145 | ||
3d632c3f | 2146 | if (!USES_PRIMARY(bond->params.mode)) |
1da177e4 | 2147 | return -EINVAL; |
1da177e4 LT |
2148 | |
2149 | /* Verify that master_dev is indeed the master of slave_dev */ | |
3d632c3f | 2150 | if (!(slave_dev->flags & IFF_SLAVE) || (slave_dev->master != bond_dev)) |
1da177e4 | 2151 | return -EINVAL; |
1da177e4 | 2152 | |
059fe7a5 | 2153 | read_lock(&bond->lock); |
1da177e4 | 2154 | |
059fe7a5 | 2155 | read_lock(&bond->curr_slave_lock); |
1da177e4 | 2156 | old_active = bond->curr_active_slave; |
059fe7a5 JV |
2157 | read_unlock(&bond->curr_slave_lock); |
2158 | ||
1da177e4 LT |
2159 | new_active = bond_get_slave_by_dev(bond, slave_dev); |
2160 | ||
2161 | /* | |
2162 | * Changing to the current active: do nothing; return success. | |
2163 | */ | |
2164 | if (new_active && (new_active == old_active)) { | |
059fe7a5 | 2165 | read_unlock(&bond->lock); |
1da177e4 LT |
2166 | return 0; |
2167 | } | |
2168 | ||
2169 | if ((new_active) && | |
2170 | (old_active) && | |
2171 | (new_active->link == BOND_LINK_UP) && | |
2172 | IS_UP(new_active->dev)) { | |
059fe7a5 | 2173 | write_lock_bh(&bond->curr_slave_lock); |
1da177e4 | 2174 | bond_change_active_slave(bond, new_active); |
059fe7a5 | 2175 | write_unlock_bh(&bond->curr_slave_lock); |
3d632c3f | 2176 | } else |
1da177e4 | 2177 | res = -EINVAL; |
1da177e4 | 2178 | |
059fe7a5 | 2179 | read_unlock(&bond->lock); |
1da177e4 LT |
2180 | |
2181 | return res; | |
2182 | } | |
2183 | ||
1da177e4 LT |
2184 | static int bond_info_query(struct net_device *bond_dev, struct ifbond *info) |
2185 | { | |
454d7c9b | 2186 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2187 | |
2188 | info->bond_mode = bond->params.mode; | |
2189 | info->miimon = bond->params.miimon; | |
2190 | ||
6603a6f2 | 2191 | read_lock(&bond->lock); |
1da177e4 | 2192 | info->num_slaves = bond->slave_cnt; |
6603a6f2 | 2193 | read_unlock(&bond->lock); |
1da177e4 LT |
2194 | |
2195 | return 0; | |
2196 | } | |
2197 | ||
2198 | static int bond_slave_info_query(struct net_device *bond_dev, struct ifslave *info) | |
2199 | { | |
454d7c9b | 2200 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 2201 | struct slave *slave; |
689c96cc | 2202 | int i, res = -ENODEV; |
1da177e4 | 2203 | |
6603a6f2 | 2204 | read_lock(&bond->lock); |
1da177e4 LT |
2205 | |
2206 | bond_for_each_slave(bond, slave, i) { | |
2207 | if (i == (int)info->slave_id) { | |
689c96cc ED |
2208 | res = 0; |
2209 | strcpy(info->slave_name, slave->dev->name); | |
2210 | info->link = slave->link; | |
2211 | info->state = slave->state; | |
2212 | info->link_failure_count = slave->link_failure_count; | |
1da177e4 LT |
2213 | break; |
2214 | } | |
2215 | } | |
2216 | ||
6603a6f2 | 2217 | read_unlock(&bond->lock); |
1da177e4 | 2218 | |
689c96cc | 2219 | return res; |
1da177e4 LT |
2220 | } |
2221 | ||
2222 | /*-------------------------------- Monitoring -------------------------------*/ | |
2223 | ||
1da177e4 | 2224 | |
f0c76d61 JV |
2225 | static int bond_miimon_inspect(struct bonding *bond) |
2226 | { | |
2227 | struct slave *slave; | |
2228 | int i, link_state, commit = 0; | |
41f89100 JP |
2229 | bool ignore_updelay; |
2230 | ||
2231 | ignore_updelay = !bond->curr_active_slave ? true : false; | |
1da177e4 LT |
2232 | |
2233 | bond_for_each_slave(bond, slave, i) { | |
f0c76d61 | 2234 | slave->new_link = BOND_LINK_NOCHANGE; |
1da177e4 | 2235 | |
f0c76d61 | 2236 | link_state = bond_check_dev_link(bond, slave->dev, 0); |
1da177e4 LT |
2237 | |
2238 | switch (slave->link) { | |
f0c76d61 JV |
2239 | case BOND_LINK_UP: |
2240 | if (link_state) | |
2241 | continue; | |
1da177e4 | 2242 | |
f0c76d61 JV |
2243 | slave->link = BOND_LINK_FAIL; |
2244 | slave->delay = bond->params.downdelay; | |
2245 | if (slave->delay) { | |
3d632c3f | 2246 | pr_info(DRV_NAME |
f0c76d61 JV |
2247 | ": %s: link status down for %s" |
2248 | "interface %s, disabling it in %d ms.\n", | |
2249 | bond->dev->name, | |
2250 | (bond->params.mode == | |
2251 | BOND_MODE_ACTIVEBACKUP) ? | |
2252 | ((slave->state == BOND_STATE_ACTIVE) ? | |
2253 | "active " : "backup ") : "", | |
2254 | slave->dev->name, | |
2255 | bond->params.downdelay * bond->params.miimon); | |
1da177e4 | 2256 | } |
f0c76d61 JV |
2257 | /*FALLTHRU*/ |
2258 | case BOND_LINK_FAIL: | |
2259 | if (link_state) { | |
2260 | /* | |
2261 | * recovered before downdelay expired | |
2262 | */ | |
2263 | slave->link = BOND_LINK_UP; | |
1da177e4 | 2264 | slave->jiffies = jiffies; |
3d632c3f | 2265 | pr_info(DRV_NAME |
1da177e4 LT |
2266 | ": %s: link status up again after %d " |
2267 | "ms for interface %s.\n", | |
1b76b316 | 2268 | bond->dev->name, |
f0c76d61 JV |
2269 | (bond->params.downdelay - slave->delay) * |
2270 | bond->params.miimon, | |
2271 | slave->dev->name); | |
2272 | continue; | |
1da177e4 | 2273 | } |
f0c76d61 JV |
2274 | |
2275 | if (slave->delay <= 0) { | |
2276 | slave->new_link = BOND_LINK_DOWN; | |
2277 | commit++; | |
2278 | continue; | |
1da177e4 | 2279 | } |
1da177e4 | 2280 | |
f0c76d61 JV |
2281 | slave->delay--; |
2282 | break; | |
2283 | ||
2284 | case BOND_LINK_DOWN: | |
2285 | if (!link_state) | |
2286 | continue; | |
2287 | ||
2288 | slave->link = BOND_LINK_BACK; | |
2289 | slave->delay = bond->params.updelay; | |
2290 | ||
2291 | if (slave->delay) { | |
3d632c3f | 2292 | pr_info(DRV_NAME |
f0c76d61 JV |
2293 | ": %s: link status up for " |
2294 | "interface %s, enabling it in %d ms.\n", | |
2295 | bond->dev->name, slave->dev->name, | |
41f89100 | 2296 | ignore_updelay ? 0 : |
f0c76d61 JV |
2297 | bond->params.updelay * |
2298 | bond->params.miimon); | |
2299 | } | |
2300 | /*FALLTHRU*/ | |
2301 | case BOND_LINK_BACK: | |
2302 | if (!link_state) { | |
2303 | slave->link = BOND_LINK_DOWN; | |
3d632c3f | 2304 | pr_info(DRV_NAME |
1da177e4 LT |
2305 | ": %s: link status down again after %d " |
2306 | "ms for interface %s.\n", | |
1b76b316 | 2307 | bond->dev->name, |
f0c76d61 JV |
2308 | (bond->params.updelay - slave->delay) * |
2309 | bond->params.miimon, | |
2310 | slave->dev->name); | |
2311 | ||
2312 | continue; | |
2313 | } | |
2314 | ||
41f89100 JP |
2315 | if (ignore_updelay) |
2316 | slave->delay = 0; | |
2317 | ||
f0c76d61 JV |
2318 | if (slave->delay <= 0) { |
2319 | slave->new_link = BOND_LINK_UP; | |
2320 | commit++; | |
41f89100 | 2321 | ignore_updelay = false; |
f0c76d61 | 2322 | continue; |
1da177e4 | 2323 | } |
f0c76d61 JV |
2324 | |
2325 | slave->delay--; | |
1da177e4 | 2326 | break; |
f0c76d61 JV |
2327 | } |
2328 | } | |
1da177e4 | 2329 | |
f0c76d61 JV |
2330 | return commit; |
2331 | } | |
1da177e4 | 2332 | |
f0c76d61 JV |
2333 | static void bond_miimon_commit(struct bonding *bond) |
2334 | { | |
2335 | struct slave *slave; | |
2336 | int i; | |
2337 | ||
2338 | bond_for_each_slave(bond, slave, i) { | |
2339 | switch (slave->new_link) { | |
2340 | case BOND_LINK_NOCHANGE: | |
2341 | continue; | |
1da177e4 | 2342 | |
f0c76d61 JV |
2343 | case BOND_LINK_UP: |
2344 | slave->link = BOND_LINK_UP; | |
2345 | slave->jiffies = jiffies; | |
2346 | ||
2347 | if (bond->params.mode == BOND_MODE_8023AD) { | |
2348 | /* prevent it from being the active one */ | |
2349 | slave->state = BOND_STATE_BACKUP; | |
2350 | } else if (bond->params.mode != BOND_MODE_ACTIVEBACKUP) { | |
2351 | /* make it immediately active */ | |
2352 | slave->state = BOND_STATE_ACTIVE; | |
2353 | } else if (slave != bond->primary_slave) { | |
2354 | /* prevent it from being the active one */ | |
2355 | slave->state = BOND_STATE_BACKUP; | |
1da177e4 | 2356 | } |
1da177e4 | 2357 | |
3d632c3f | 2358 | pr_info(DRV_NAME |
f0c76d61 JV |
2359 | ": %s: link status definitely " |
2360 | "up for interface %s.\n", | |
2361 | bond->dev->name, slave->dev->name); | |
1da177e4 | 2362 | |
f0c76d61 JV |
2363 | /* notify ad that the link status has changed */ |
2364 | if (bond->params.mode == BOND_MODE_8023AD) | |
2365 | bond_3ad_handle_link_change(slave, BOND_LINK_UP); | |
059fe7a5 | 2366 | |
58402054 | 2367 | if (bond_is_lb(bond)) |
f0c76d61 JV |
2368 | bond_alb_handle_link_change(bond, slave, |
2369 | BOND_LINK_UP); | |
1da177e4 | 2370 | |
f0c76d61 JV |
2371 | if (!bond->curr_active_slave || |
2372 | (slave == bond->primary_slave)) | |
2373 | goto do_failover; | |
1da177e4 | 2374 | |
f0c76d61 | 2375 | continue; |
059fe7a5 | 2376 | |
f0c76d61 | 2377 | case BOND_LINK_DOWN: |
fba4acda JV |
2378 | if (slave->link_failure_count < UINT_MAX) |
2379 | slave->link_failure_count++; | |
2380 | ||
f0c76d61 | 2381 | slave->link = BOND_LINK_DOWN; |
1da177e4 | 2382 | |
f0c76d61 JV |
2383 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP || |
2384 | bond->params.mode == BOND_MODE_8023AD) | |
2385 | bond_set_slave_inactive_flags(slave); | |
2386 | ||
3d632c3f | 2387 | pr_info(DRV_NAME |
f0c76d61 JV |
2388 | ": %s: link status definitely down for " |
2389 | "interface %s, disabling it\n", | |
2390 | bond->dev->name, slave->dev->name); | |
2391 | ||
2392 | if (bond->params.mode == BOND_MODE_8023AD) | |
2393 | bond_3ad_handle_link_change(slave, | |
2394 | BOND_LINK_DOWN); | |
2395 | ||
ae63e808 | 2396 | if (bond_is_lb(bond)) |
f0c76d61 JV |
2397 | bond_alb_handle_link_change(bond, slave, |
2398 | BOND_LINK_DOWN); | |
2399 | ||
2400 | if (slave == bond->curr_active_slave) | |
2401 | goto do_failover; | |
2402 | ||
2403 | continue; | |
2404 | ||
2405 | default: | |
3d632c3f | 2406 | pr_err(DRV_NAME |
f0c76d61 JV |
2407 | ": %s: invalid new link %d on slave %s\n", |
2408 | bond->dev->name, slave->new_link, | |
2409 | slave->dev->name); | |
2410 | slave->new_link = BOND_LINK_NOCHANGE; | |
2411 | ||
2412 | continue; | |
2413 | } | |
2414 | ||
2415 | do_failover: | |
2416 | ASSERT_RTNL(); | |
2417 | write_lock_bh(&bond->curr_slave_lock); | |
2418 | bond_select_active_slave(bond); | |
2419 | write_unlock_bh(&bond->curr_slave_lock); | |
2420 | } | |
2421 | ||
2422 | bond_set_carrier(bond); | |
1da177e4 LT |
2423 | } |
2424 | ||
0b0eef66 JV |
2425 | /* |
2426 | * bond_mii_monitor | |
2427 | * | |
2428 | * Really a wrapper that splits the mii monitor into two phases: an | |
f0c76d61 JV |
2429 | * inspection, then (if inspection indicates something needs to be done) |
2430 | * an acquisition of appropriate locks followed by a commit phase to | |
2431 | * implement whatever link state changes are indicated. | |
0b0eef66 JV |
2432 | */ |
2433 | void bond_mii_monitor(struct work_struct *work) | |
2434 | { | |
2435 | struct bonding *bond = container_of(work, struct bonding, | |
2436 | mii_work.work); | |
0b0eef66 JV |
2437 | |
2438 | read_lock(&bond->lock); | |
f0c76d61 JV |
2439 | if (bond->kill_timers) |
2440 | goto out; | |
2441 | ||
2442 | if (bond->slave_cnt == 0) | |
2443 | goto re_arm; | |
b59f9f74 JV |
2444 | |
2445 | if (bond->send_grat_arp) { | |
2446 | read_lock(&bond->curr_slave_lock); | |
2447 | bond_send_gratuitous_arp(bond); | |
2448 | read_unlock(&bond->curr_slave_lock); | |
2449 | } | |
2450 | ||
305d552a BH |
2451 | if (bond->send_unsol_na) { |
2452 | read_lock(&bond->curr_slave_lock); | |
2453 | bond_send_unsolicited_na(bond); | |
2454 | read_unlock(&bond->curr_slave_lock); | |
2455 | } | |
2456 | ||
f0c76d61 | 2457 | if (bond_miimon_inspect(bond)) { |
0b0eef66 JV |
2458 | read_unlock(&bond->lock); |
2459 | rtnl_lock(); | |
2460 | read_lock(&bond->lock); | |
f0c76d61 JV |
2461 | |
2462 | bond_miimon_commit(bond); | |
2463 | ||
5655662d JV |
2464 | read_unlock(&bond->lock); |
2465 | rtnl_unlock(); /* might sleep, hold no other locks */ | |
2466 | read_lock(&bond->lock); | |
0b0eef66 JV |
2467 | } |
2468 | ||
f0c76d61 JV |
2469 | re_arm: |
2470 | if (bond->params.miimon) | |
2471 | queue_delayed_work(bond->wq, &bond->mii_work, | |
2472 | msecs_to_jiffies(bond->params.miimon)); | |
2473 | out: | |
0b0eef66 | 2474 | read_unlock(&bond->lock); |
0b0eef66 | 2475 | } |
c3ade5ca | 2476 | |
d3bb52b0 | 2477 | static __be32 bond_glean_dev_ip(struct net_device *dev) |
c3ade5ca JV |
2478 | { |
2479 | struct in_device *idev; | |
2480 | struct in_ifaddr *ifa; | |
a144ea4b | 2481 | __be32 addr = 0; |
c3ade5ca JV |
2482 | |
2483 | if (!dev) | |
2484 | return 0; | |
2485 | ||
2486 | rcu_read_lock(); | |
e5ed6399 | 2487 | idev = __in_dev_get_rcu(dev); |
c3ade5ca JV |
2488 | if (!idev) |
2489 | goto out; | |
2490 | ||
2491 | ifa = idev->ifa_list; | |
2492 | if (!ifa) | |
2493 | goto out; | |
2494 | ||
2495 | addr = ifa->ifa_local; | |
2496 | out: | |
2497 | rcu_read_unlock(); | |
2498 | return addr; | |
2499 | } | |
2500 | ||
d3bb52b0 | 2501 | static int bond_has_this_ip(struct bonding *bond, __be32 ip) |
f5b2b966 | 2502 | { |
0883beca | 2503 | struct vlan_entry *vlan; |
f5b2b966 JV |
2504 | |
2505 | if (ip == bond->master_ip) | |
2506 | return 1; | |
2507 | ||
0883beca | 2508 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
f5b2b966 JV |
2509 | if (ip == vlan->vlan_ip) |
2510 | return 1; | |
2511 | } | |
2512 | ||
2513 | return 0; | |
2514 | } | |
2515 | ||
c3ade5ca JV |
2516 | /* |
2517 | * We go to the (large) trouble of VLAN tagging ARP frames because | |
2518 | * switches in VLAN mode (especially if ports are configured as | |
2519 | * "native" to a VLAN) might not pass non-tagged frames. | |
2520 | */ | |
d3bb52b0 | 2521 | 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 |
2522 | { |
2523 | struct sk_buff *skb; | |
2524 | ||
5a03cdb7 | 2525 | pr_debug("arp %d on slave %s: dst %x src %x vid %d\n", arp_op, |
c3ade5ca | 2526 | slave_dev->name, dest_ip, src_ip, vlan_id); |
3d632c3f | 2527 | |
c3ade5ca JV |
2528 | skb = arp_create(arp_op, ETH_P_ARP, dest_ip, slave_dev, src_ip, |
2529 | NULL, slave_dev->dev_addr, NULL); | |
2530 | ||
2531 | if (!skb) { | |
3d632c3f | 2532 | pr_err(DRV_NAME ": ARP packet allocation failed\n"); |
c3ade5ca JV |
2533 | return; |
2534 | } | |
2535 | if (vlan_id) { | |
2536 | skb = vlan_put_tag(skb, vlan_id); | |
2537 | if (!skb) { | |
3d632c3f | 2538 | pr_err(DRV_NAME ": failed to insert VLAN tag\n"); |
c3ade5ca JV |
2539 | return; |
2540 | } | |
2541 | } | |
2542 | arp_xmit(skb); | |
2543 | } | |
2544 | ||
2545 | ||
1da177e4 LT |
2546 | static void bond_arp_send_all(struct bonding *bond, struct slave *slave) |
2547 | { | |
c3ade5ca | 2548 | int i, vlan_id, rv; |
d3bb52b0 | 2549 | __be32 *targets = bond->params.arp_targets; |
0883beca | 2550 | struct vlan_entry *vlan; |
c3ade5ca JV |
2551 | struct net_device *vlan_dev; |
2552 | struct flowi fl; | |
2553 | struct rtable *rt; | |
1da177e4 | 2554 | |
6b780567 MW |
2555 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
2556 | if (!targets[i]) | |
5a31bec0 | 2557 | break; |
5a03cdb7 | 2558 | pr_debug("basa: target %x\n", targets[i]); |
c3ade5ca | 2559 | if (list_empty(&bond->vlan_list)) { |
5a03cdb7 | 2560 | pr_debug("basa: empty vlan: arp_send\n"); |
c3ade5ca JV |
2561 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2562 | bond->master_ip, 0); | |
2563 | continue; | |
2564 | } | |
2565 | ||
2566 | /* | |
2567 | * If VLANs are configured, we do a route lookup to | |
2568 | * determine which VLAN interface would be used, so we | |
2569 | * can tag the ARP with the proper VLAN tag. | |
2570 | */ | |
2571 | memset(&fl, 0, sizeof(fl)); | |
2572 | fl.fl4_dst = targets[i]; | |
2573 | fl.fl4_tos = RTO_ONLINK; | |
2574 | ||
f206351a | 2575 | rv = ip_route_output_key(&init_net, &rt, &fl); |
c3ade5ca JV |
2576 | if (rv) { |
2577 | if (net_ratelimit()) { | |
3d632c3f | 2578 | pr_warning(DRV_NAME |
63779436 HH |
2579 | ": %s: no route to arp_ip_target %pI4\n", |
2580 | bond->dev->name, &fl.fl4_dst); | |
c3ade5ca JV |
2581 | } |
2582 | continue; | |
2583 | } | |
2584 | ||
2585 | /* | |
2586 | * This target is not on a VLAN | |
2587 | */ | |
2588 | if (rt->u.dst.dev == bond->dev) { | |
ed4b9f80 | 2589 | ip_rt_put(rt); |
5a03cdb7 | 2590 | pr_debug("basa: rtdev == bond->dev: arp_send\n"); |
c3ade5ca JV |
2591 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2592 | bond->master_ip, 0); | |
2593 | continue; | |
2594 | } | |
2595 | ||
2596 | vlan_id = 0; | |
0883beca | 2597 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
5c15bdec | 2598 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
2599 | if (vlan_dev == rt->u.dst.dev) { |
2600 | vlan_id = vlan->vlan_id; | |
5a03cdb7 | 2601 | pr_debug("basa: vlan match on %s %d\n", |
c3ade5ca JV |
2602 | vlan_dev->name, vlan_id); |
2603 | break; | |
2604 | } | |
2605 | } | |
2606 | ||
2607 | if (vlan_id) { | |
ed4b9f80 | 2608 | ip_rt_put(rt); |
c3ade5ca JV |
2609 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2610 | vlan->vlan_ip, vlan_id); | |
2611 | continue; | |
2612 | } | |
2613 | ||
2614 | if (net_ratelimit()) { | |
3d632c3f | 2615 | pr_warning(DRV_NAME |
63779436 HH |
2616 | ": %s: no path to arp_ip_target %pI4 via rt.dev %s\n", |
2617 | bond->dev->name, &fl.fl4_dst, | |
c3ade5ca JV |
2618 | rt->u.dst.dev ? rt->u.dst.dev->name : "NULL"); |
2619 | } | |
ed4b9f80 | 2620 | ip_rt_put(rt); |
c3ade5ca JV |
2621 | } |
2622 | } | |
2623 | ||
2624 | /* | |
2625 | * Kick out a gratuitous ARP for an IP on the bonding master plus one | |
2626 | * for each VLAN above us. | |
b59f9f74 JV |
2627 | * |
2628 | * Caller must hold curr_slave_lock for read or better | |
c3ade5ca JV |
2629 | */ |
2630 | static void bond_send_gratuitous_arp(struct bonding *bond) | |
2631 | { | |
2632 | struct slave *slave = bond->curr_active_slave; | |
2633 | struct vlan_entry *vlan; | |
2634 | struct net_device *vlan_dev; | |
2635 | ||
5a03cdb7 | 2636 | pr_debug("bond_send_grat_arp: bond %s slave %s\n", bond->dev->name, |
c3ade5ca | 2637 | slave ? slave->dev->name : "NULL"); |
b59f9f74 JV |
2638 | |
2639 | if (!slave || !bond->send_grat_arp || | |
2640 | test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state)) | |
c3ade5ca JV |
2641 | return; |
2642 | ||
b59f9f74 JV |
2643 | bond->send_grat_arp--; |
2644 | ||
c3ade5ca JV |
2645 | if (bond->master_ip) { |
2646 | bond_arp_send(slave->dev, ARPOP_REPLY, bond->master_ip, | |
1053f62c | 2647 | bond->master_ip, 0); |
c3ade5ca JV |
2648 | } |
2649 | ||
2650 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { | |
5c15bdec | 2651 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
2652 | if (vlan->vlan_ip) { |
2653 | bond_arp_send(slave->dev, ARPOP_REPLY, vlan->vlan_ip, | |
2654 | vlan->vlan_ip, vlan->vlan_id); | |
2655 | } | |
1da177e4 LT |
2656 | } |
2657 | } | |
2658 | ||
d3bb52b0 | 2659 | static void bond_validate_arp(struct bonding *bond, struct slave *slave, __be32 sip, __be32 tip) |
f5b2b966 JV |
2660 | { |
2661 | int i; | |
d3bb52b0 | 2662 | __be32 *targets = bond->params.arp_targets; |
f5b2b966 | 2663 | |
f5b2b966 | 2664 | for (i = 0; (i < BOND_MAX_ARP_TARGETS) && targets[i]; i++) { |
5a03cdb7 | 2665 | pr_debug("bva: sip %pI4 tip %pI4 t[%d] %pI4 bhti(tip) %d\n", |
63779436 | 2666 | &sip, &tip, i, &targets[i], bond_has_this_ip(bond, tip)); |
f5b2b966 JV |
2667 | if (sip == targets[i]) { |
2668 | if (bond_has_this_ip(bond, tip)) | |
2669 | slave->last_arp_rx = jiffies; | |
2670 | return; | |
2671 | } | |
2672 | } | |
2673 | } | |
2674 | ||
2675 | static int bond_arp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev) | |
2676 | { | |
2677 | struct arphdr *arp; | |
2678 | struct slave *slave; | |
2679 | struct bonding *bond; | |
2680 | unsigned char *arp_ptr; | |
d3bb52b0 | 2681 | __be32 sip, tip; |
f5b2b966 | 2682 | |
c346dca1 | 2683 | if (dev_net(dev) != &init_net) |
e730c155 EB |
2684 | goto out; |
2685 | ||
f5b2b966 JV |
2686 | if (!(dev->priv_flags & IFF_BONDING) || !(dev->flags & IFF_MASTER)) |
2687 | goto out; | |
2688 | ||
454d7c9b | 2689 | bond = netdev_priv(dev); |
f5b2b966 JV |
2690 | read_lock(&bond->lock); |
2691 | ||
5a03cdb7 | 2692 | pr_debug("bond_arp_rcv: bond %s skb->dev %s orig_dev %s\n", |
f5b2b966 JV |
2693 | bond->dev->name, skb->dev ? skb->dev->name : "NULL", |
2694 | orig_dev ? orig_dev->name : "NULL"); | |
2695 | ||
2696 | slave = bond_get_slave_by_dev(bond, orig_dev); | |
2697 | if (!slave || !slave_do_arp_validate(bond, slave)) | |
2698 | goto out_unlock; | |
2699 | ||
988b7050 | 2700 | if (!pskb_may_pull(skb, arp_hdr_len(dev))) |
f5b2b966 JV |
2701 | goto out_unlock; |
2702 | ||
d0a92be0 | 2703 | arp = arp_hdr(skb); |
f5b2b966 JV |
2704 | if (arp->ar_hln != dev->addr_len || |
2705 | skb->pkt_type == PACKET_OTHERHOST || | |
2706 | skb->pkt_type == PACKET_LOOPBACK || | |
2707 | arp->ar_hrd != htons(ARPHRD_ETHER) || | |
2708 | arp->ar_pro != htons(ETH_P_IP) || | |
2709 | arp->ar_pln != 4) | |
2710 | goto out_unlock; | |
2711 | ||
2712 | arp_ptr = (unsigned char *)(arp + 1); | |
2713 | arp_ptr += dev->addr_len; | |
2714 | memcpy(&sip, arp_ptr, 4); | |
2715 | arp_ptr += 4 + dev->addr_len; | |
2716 | memcpy(&tip, arp_ptr, 4); | |
2717 | ||
5a03cdb7 | 2718 | pr_debug("bond_arp_rcv: %s %s/%d av %d sv %d sip %pI4 tip %pI4\n", |
63779436 HH |
2719 | bond->dev->name, slave->dev->name, slave->state, |
2720 | bond->params.arp_validate, slave_do_arp_validate(bond, slave), | |
2721 | &sip, &tip); | |
f5b2b966 JV |
2722 | |
2723 | /* | |
2724 | * Backup slaves won't see the ARP reply, but do come through | |
2725 | * here for each ARP probe (so we swap the sip/tip to validate | |
2726 | * the probe). In a "redundant switch, common router" type of | |
2727 | * configuration, the ARP probe will (hopefully) travel from | |
2728 | * the active, through one switch, the router, then the other | |
2729 | * switch before reaching the backup. | |
2730 | */ | |
2731 | if (slave->state == BOND_STATE_ACTIVE) | |
2732 | bond_validate_arp(bond, slave, sip, tip); | |
2733 | else | |
2734 | bond_validate_arp(bond, slave, tip, sip); | |
2735 | ||
2736 | out_unlock: | |
2737 | read_unlock(&bond->lock); | |
2738 | out: | |
2739 | dev_kfree_skb(skb); | |
2740 | return NET_RX_SUCCESS; | |
2741 | } | |
2742 | ||
1da177e4 LT |
2743 | /* |
2744 | * this function is called regularly to monitor each slave's link | |
2745 | * ensuring that traffic is being sent and received when arp monitoring | |
2746 | * is used in load-balancing mode. if the adapter has been dormant, then an | |
2747 | * arp is transmitted to generate traffic. see activebackup_arp_monitor for | |
2748 | * arp monitoring in active backup mode. | |
2749 | */ | |
1b76b316 | 2750 | void bond_loadbalance_arp_mon(struct work_struct *work) |
1da177e4 | 2751 | { |
1b76b316 JV |
2752 | struct bonding *bond = container_of(work, struct bonding, |
2753 | arp_work.work); | |
1da177e4 LT |
2754 | struct slave *slave, *oldcurrent; |
2755 | int do_failover = 0; | |
2756 | int delta_in_ticks; | |
2757 | int i; | |
2758 | ||
2759 | read_lock(&bond->lock); | |
2760 | ||
5ce0da8f | 2761 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
1da177e4 | 2762 | |
3d632c3f | 2763 | if (bond->kill_timers) |
1da177e4 | 2764 | goto out; |
1da177e4 | 2765 | |
3d632c3f | 2766 | if (bond->slave_cnt == 0) |
1da177e4 | 2767 | goto re_arm; |
1da177e4 LT |
2768 | |
2769 | read_lock(&bond->curr_slave_lock); | |
2770 | oldcurrent = bond->curr_active_slave; | |
2771 | read_unlock(&bond->curr_slave_lock); | |
2772 | ||
2773 | /* see if any of the previous devices are up now (i.e. they have | |
2774 | * xmt and rcv traffic). the curr_active_slave does not come into | |
2775 | * the picture unless it is null. also, slave->jiffies is not needed | |
2776 | * here because we send an arp on each slave and give a slave as | |
2777 | * long as it needs to get the tx/rx within the delta. | |
2778 | * TODO: what about up/down delay in arp mode? it wasn't here before | |
2779 | * so it can wait | |
2780 | */ | |
2781 | bond_for_each_slave(bond, slave, i) { | |
2782 | if (slave->link != BOND_LINK_UP) { | |
9d21493b | 2783 | if (time_before_eq(jiffies, dev_trans_start(slave->dev) + delta_in_ticks) && |
b63bb739 | 2784 | time_before_eq(jiffies, slave->dev->last_rx + delta_in_ticks)) { |
1da177e4 LT |
2785 | |
2786 | slave->link = BOND_LINK_UP; | |
2787 | slave->state = BOND_STATE_ACTIVE; | |
2788 | ||
2789 | /* primary_slave has no meaning in round-robin | |
2790 | * mode. the window of a slave being up and | |
2791 | * curr_active_slave being null after enslaving | |
2792 | * is closed. | |
2793 | */ | |
2794 | if (!oldcurrent) { | |
3d632c3f | 2795 | pr_info(DRV_NAME |
1da177e4 LT |
2796 | ": %s: link status definitely " |
2797 | "up for interface %s, ", | |
1b76b316 | 2798 | bond->dev->name, |
1da177e4 LT |
2799 | slave->dev->name); |
2800 | do_failover = 1; | |
2801 | } else { | |
3d632c3f | 2802 | pr_info(DRV_NAME |
1da177e4 | 2803 | ": %s: interface %s is now up\n", |
1b76b316 | 2804 | bond->dev->name, |
1da177e4 LT |
2805 | slave->dev->name); |
2806 | } | |
2807 | } | |
2808 | } else { | |
2809 | /* slave->link == BOND_LINK_UP */ | |
2810 | ||
2811 | /* not all switches will respond to an arp request | |
2812 | * when the source ip is 0, so don't take the link down | |
2813 | * if we don't know our ip yet | |
2814 | */ | |
9d21493b | 2815 | if (time_after_eq(jiffies, dev_trans_start(slave->dev) + 2*delta_in_ticks) || |
4b8a9239 | 2816 | (time_after_eq(jiffies, slave->dev->last_rx + 2*delta_in_ticks))) { |
1da177e4 LT |
2817 | |
2818 | slave->link = BOND_LINK_DOWN; | |
2819 | slave->state = BOND_STATE_BACKUP; | |
2820 | ||
3d632c3f | 2821 | if (slave->link_failure_count < UINT_MAX) |
1da177e4 | 2822 | slave->link_failure_count++; |
1da177e4 | 2823 | |
3d632c3f | 2824 | pr_info(DRV_NAME |
1da177e4 | 2825 | ": %s: interface %s is now down.\n", |
1b76b316 | 2826 | bond->dev->name, |
1da177e4 LT |
2827 | slave->dev->name); |
2828 | ||
3d632c3f | 2829 | if (slave == oldcurrent) |
1da177e4 | 2830 | do_failover = 1; |
1da177e4 LT |
2831 | } |
2832 | } | |
2833 | ||
2834 | /* note: if switch is in round-robin mode, all links | |
2835 | * must tx arp to ensure all links rx an arp - otherwise | |
2836 | * links may oscillate or not come up at all; if switch is | |
2837 | * in something like xor mode, there is nothing we can | |
2838 | * do - all replies will be rx'ed on same link causing slaves | |
2839 | * to be unstable during low/no traffic periods | |
2840 | */ | |
3d632c3f | 2841 | if (IS_UP(slave->dev)) |
1da177e4 | 2842 | bond_arp_send_all(bond, slave); |
1da177e4 LT |
2843 | } |
2844 | ||
2845 | if (do_failover) { | |
059fe7a5 | 2846 | write_lock_bh(&bond->curr_slave_lock); |
1da177e4 LT |
2847 | |
2848 | bond_select_active_slave(bond); | |
2849 | ||
059fe7a5 | 2850 | write_unlock_bh(&bond->curr_slave_lock); |
1da177e4 LT |
2851 | } |
2852 | ||
2853 | re_arm: | |
1b76b316 JV |
2854 | if (bond->params.arp_interval) |
2855 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); | |
1da177e4 LT |
2856 | out: |
2857 | read_unlock(&bond->lock); | |
2858 | } | |
2859 | ||
2860 | /* | |
b2220cad JV |
2861 | * Called to inspect slaves for active-backup mode ARP monitor link state |
2862 | * changes. Sets new_link in slaves to specify what action should take | |
2863 | * place for the slave. Returns 0 if no changes are found, >0 if changes | |
2864 | * to link states must be committed. | |
2865 | * | |
2866 | * Called with bond->lock held for read. | |
1da177e4 | 2867 | */ |
b2220cad | 2868 | static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks) |
1da177e4 | 2869 | { |
1da177e4 | 2870 | struct slave *slave; |
b2220cad | 2871 | int i, commit = 0; |
1da177e4 | 2872 | |
b2220cad JV |
2873 | bond_for_each_slave(bond, slave, i) { |
2874 | slave->new_link = BOND_LINK_NOCHANGE; | |
1da177e4 | 2875 | |
b2220cad JV |
2876 | if (slave->link != BOND_LINK_UP) { |
2877 | if (time_before_eq(jiffies, slave_last_rx(bond, slave) + | |
2878 | delta_in_ticks)) { | |
2879 | slave->new_link = BOND_LINK_UP; | |
2880 | commit++; | |
2881 | } | |
1da177e4 | 2882 | |
b2220cad JV |
2883 | continue; |
2884 | } | |
1da177e4 | 2885 | |
b2220cad JV |
2886 | /* |
2887 | * Give slaves 2*delta after being enslaved or made | |
2888 | * active. This avoids bouncing, as the last receive | |
2889 | * times need a full ARP monitor cycle to be updated. | |
2890 | */ | |
2891 | if (!time_after_eq(jiffies, slave->jiffies + | |
2892 | 2 * delta_in_ticks)) | |
2893 | continue; | |
2894 | ||
2895 | /* | |
2896 | * Backup slave is down if: | |
2897 | * - No current_arp_slave AND | |
2898 | * - more than 3*delta since last receive AND | |
2899 | * - the bond has an IP address | |
2900 | * | |
2901 | * Note: a non-null current_arp_slave indicates | |
2902 | * the curr_active_slave went down and we are | |
2903 | * searching for a new one; under this condition | |
2904 | * we only take the curr_active_slave down - this | |
2905 | * gives each slave a chance to tx/rx traffic | |
2906 | * before being taken out | |
2907 | */ | |
2908 | if (slave->state == BOND_STATE_BACKUP && | |
2909 | !bond->current_arp_slave && | |
2910 | time_after(jiffies, slave_last_rx(bond, slave) + | |
2911 | 3 * delta_in_ticks)) { | |
2912 | slave->new_link = BOND_LINK_DOWN; | |
2913 | commit++; | |
2914 | } | |
2915 | ||
2916 | /* | |
2917 | * Active slave is down if: | |
2918 | * - more than 2*delta since transmitting OR | |
2919 | * - (more than 2*delta since receive AND | |
2920 | * the bond has an IP address) | |
2921 | */ | |
2922 | if ((slave->state == BOND_STATE_ACTIVE) && | |
9d21493b | 2923 | (time_after_eq(jiffies, dev_trans_start(slave->dev) + |
b2220cad JV |
2924 | 2 * delta_in_ticks) || |
2925 | (time_after_eq(jiffies, slave_last_rx(bond, slave) | |
2926 | + 2 * delta_in_ticks)))) { | |
2927 | slave->new_link = BOND_LINK_DOWN; | |
2928 | commit++; | |
2929 | } | |
1da177e4 LT |
2930 | } |
2931 | ||
b2220cad JV |
2932 | read_lock(&bond->curr_slave_lock); |
2933 | ||
2934 | /* | |
2935 | * Trigger a commit if the primary option setting has changed. | |
1da177e4 | 2936 | */ |
b2220cad JV |
2937 | if (bond->primary_slave && |
2938 | (bond->primary_slave != bond->curr_active_slave) && | |
2939 | (bond->primary_slave->link == BOND_LINK_UP)) | |
2940 | commit++; | |
1da177e4 | 2941 | |
b2220cad | 2942 | read_unlock(&bond->curr_slave_lock); |
1da177e4 | 2943 | |
b2220cad JV |
2944 | return commit; |
2945 | } | |
1da177e4 | 2946 | |
b2220cad JV |
2947 | /* |
2948 | * Called to commit link state changes noted by inspection step of | |
2949 | * active-backup mode ARP monitor. | |
2950 | * | |
2951 | * Called with RTNL and bond->lock for read. | |
2952 | */ | |
2953 | static void bond_ab_arp_commit(struct bonding *bond, int delta_in_ticks) | |
2954 | { | |
2955 | struct slave *slave; | |
2956 | int i; | |
1da177e4 | 2957 | |
b2220cad JV |
2958 | bond_for_each_slave(bond, slave, i) { |
2959 | switch (slave->new_link) { | |
2960 | case BOND_LINK_NOCHANGE: | |
2961 | continue; | |
ff59c456 | 2962 | |
b2220cad JV |
2963 | case BOND_LINK_UP: |
2964 | write_lock_bh(&bond->curr_slave_lock); | |
1da177e4 | 2965 | |
b2220cad | 2966 | if (!bond->curr_active_slave && |
9d21493b | 2967 | time_before_eq(jiffies, dev_trans_start(slave->dev) + |
b2220cad JV |
2968 | delta_in_ticks)) { |
2969 | slave->link = BOND_LINK_UP; | |
2970 | bond_change_active_slave(bond, slave); | |
2971 | bond->current_arp_slave = NULL; | |
2972 | ||
3d632c3f | 2973 | pr_info(DRV_NAME |
b2220cad JV |
2974 | ": %s: %s is up and now the " |
2975 | "active interface\n", | |
2976 | bond->dev->name, slave->dev->name); | |
2977 | ||
2978 | } else if (bond->curr_active_slave != slave) { | |
2979 | /* this slave has just come up but we | |
2980 | * already have a current slave; this can | |
2981 | * also happen if bond_enslave adds a new | |
2982 | * slave that is up while we are searching | |
2983 | * for a new slave | |
1da177e4 | 2984 | */ |
b2220cad JV |
2985 | slave->link = BOND_LINK_UP; |
2986 | bond_set_slave_inactive_flags(slave); | |
2987 | bond->current_arp_slave = NULL; | |
2988 | ||
3d632c3f | 2989 | pr_info(DRV_NAME |
b2220cad JV |
2990 | ": %s: backup interface %s is now up\n", |
2991 | bond->dev->name, slave->dev->name); | |
2992 | } | |
1da177e4 | 2993 | |
b2220cad | 2994 | write_unlock_bh(&bond->curr_slave_lock); |
1da177e4 | 2995 | |
b2220cad | 2996 | break; |
1da177e4 | 2997 | |
b2220cad JV |
2998 | case BOND_LINK_DOWN: |
2999 | if (slave->link_failure_count < UINT_MAX) | |
3000 | slave->link_failure_count++; | |
3001 | ||
3002 | slave->link = BOND_LINK_DOWN; | |
3003 | ||
3004 | if (slave == bond->curr_active_slave) { | |
3d632c3f | 3005 | pr_info(DRV_NAME |
b2220cad JV |
3006 | ": %s: link status down for active " |
3007 | "interface %s, disabling it\n", | |
3008 | bond->dev->name, slave->dev->name); | |
1da177e4 LT |
3009 | |
3010 | bond_set_slave_inactive_flags(slave); | |
3011 | ||
b2220cad JV |
3012 | write_lock_bh(&bond->curr_slave_lock); |
3013 | ||
3014 | bond_select_active_slave(bond); | |
3015 | if (bond->curr_active_slave) | |
3016 | bond->curr_active_slave->jiffies = | |
3017 | jiffies; | |
3018 | ||
3019 | write_unlock_bh(&bond->curr_slave_lock); | |
3020 | ||
3021 | bond->current_arp_slave = NULL; | |
3022 | ||
3023 | } else if (slave->state == BOND_STATE_BACKUP) { | |
3d632c3f | 3024 | pr_info(DRV_NAME |
1da177e4 | 3025 | ": %s: backup interface %s is now down\n", |
b2220cad JV |
3026 | bond->dev->name, slave->dev->name); |
3027 | ||
3028 | bond_set_slave_inactive_flags(slave); | |
1da177e4 | 3029 | } |
b2220cad JV |
3030 | break; |
3031 | ||
3032 | default: | |
3d632c3f | 3033 | pr_err(DRV_NAME |
b2220cad JV |
3034 | ": %s: impossible: new_link %d on slave %s\n", |
3035 | bond->dev->name, slave->new_link, | |
3036 | slave->dev->name); | |
1da177e4 LT |
3037 | } |
3038 | } | |
3039 | ||
b2220cad JV |
3040 | /* |
3041 | * No race with changes to primary via sysfs, as we hold rtnl. | |
3042 | */ | |
3043 | if (bond->primary_slave && | |
3044 | (bond->primary_slave != bond->curr_active_slave) && | |
3045 | (bond->primary_slave->link == BOND_LINK_UP)) { | |
3046 | write_lock_bh(&bond->curr_slave_lock); | |
3047 | bond_change_active_slave(bond, bond->primary_slave); | |
3048 | write_unlock_bh(&bond->curr_slave_lock); | |
3049 | } | |
1da177e4 | 3050 | |
b2220cad JV |
3051 | bond_set_carrier(bond); |
3052 | } | |
1da177e4 | 3053 | |
b2220cad JV |
3054 | /* |
3055 | * Send ARP probes for active-backup mode ARP monitor. | |
3056 | * | |
3057 | * Called with bond->lock held for read. | |
3058 | */ | |
3059 | static void bond_ab_arp_probe(struct bonding *bond) | |
3060 | { | |
3061 | struct slave *slave; | |
3062 | int i; | |
1da177e4 | 3063 | |
b2220cad | 3064 | read_lock(&bond->curr_slave_lock); |
1da177e4 | 3065 | |
b2220cad | 3066 | if (bond->current_arp_slave && bond->curr_active_slave) |
3d632c3f | 3067 | pr_info(DRV_NAME "PROBE: c_arp %s && cas %s BAD\n", |
b2220cad JV |
3068 | bond->current_arp_slave->dev->name, |
3069 | bond->curr_active_slave->dev->name); | |
1da177e4 | 3070 | |
b2220cad JV |
3071 | if (bond->curr_active_slave) { |
3072 | bond_arp_send_all(bond, bond->curr_active_slave); | |
3073 | read_unlock(&bond->curr_slave_lock); | |
3074 | return; | |
3075 | } | |
1da177e4 | 3076 | |
b2220cad | 3077 | read_unlock(&bond->curr_slave_lock); |
059fe7a5 | 3078 | |
b2220cad JV |
3079 | /* if we don't have a curr_active_slave, search for the next available |
3080 | * backup slave from the current_arp_slave and make it the candidate | |
3081 | * for becoming the curr_active_slave | |
3082 | */ | |
1da177e4 | 3083 | |
b2220cad JV |
3084 | if (!bond->current_arp_slave) { |
3085 | bond->current_arp_slave = bond->first_slave; | |
3086 | if (!bond->current_arp_slave) | |
3087 | return; | |
3088 | } | |
1da177e4 | 3089 | |
b2220cad | 3090 | bond_set_slave_inactive_flags(bond->current_arp_slave); |
059fe7a5 | 3091 | |
b2220cad JV |
3092 | /* search for next candidate */ |
3093 | bond_for_each_slave_from(bond, slave, i, bond->current_arp_slave->next) { | |
3094 | if (IS_UP(slave->dev)) { | |
3095 | slave->link = BOND_LINK_BACK; | |
3096 | bond_set_slave_active_flags(slave); | |
3097 | bond_arp_send_all(bond, slave); | |
1da177e4 | 3098 | slave->jiffies = jiffies; |
b2220cad JV |
3099 | bond->current_arp_slave = slave; |
3100 | break; | |
1da177e4 LT |
3101 | } |
3102 | ||
b2220cad JV |
3103 | /* if the link state is up at this point, we |
3104 | * mark it down - this can happen if we have | |
3105 | * simultaneous link failures and | |
3106 | * reselect_active_interface doesn't make this | |
3107 | * one the current slave so it is still marked | |
3108 | * up when it is actually down | |
1da177e4 | 3109 | */ |
b2220cad JV |
3110 | if (slave->link == BOND_LINK_UP) { |
3111 | slave->link = BOND_LINK_DOWN; | |
3112 | if (slave->link_failure_count < UINT_MAX) | |
3113 | slave->link_failure_count++; | |
1da177e4 | 3114 | |
b2220cad JV |
3115 | bond_set_slave_inactive_flags(slave); |
3116 | ||
3d632c3f | 3117 | pr_info(DRV_NAME |
b2220cad JV |
3118 | ": %s: backup interface %s is now down.\n", |
3119 | bond->dev->name, slave->dev->name); | |
1da177e4 | 3120 | } |
b2220cad JV |
3121 | } |
3122 | } | |
1da177e4 | 3123 | |
b2220cad JV |
3124 | void bond_activebackup_arp_mon(struct work_struct *work) |
3125 | { | |
3126 | struct bonding *bond = container_of(work, struct bonding, | |
3127 | arp_work.work); | |
3128 | int delta_in_ticks; | |
1da177e4 | 3129 | |
b2220cad | 3130 | read_lock(&bond->lock); |
1da177e4 | 3131 | |
b2220cad JV |
3132 | if (bond->kill_timers) |
3133 | goto out; | |
1da177e4 | 3134 | |
b2220cad | 3135 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
1da177e4 | 3136 | |
b2220cad JV |
3137 | if (bond->slave_cnt == 0) |
3138 | goto re_arm; | |
3139 | ||
b59f9f74 JV |
3140 | if (bond->send_grat_arp) { |
3141 | read_lock(&bond->curr_slave_lock); | |
3142 | bond_send_gratuitous_arp(bond); | |
3143 | read_unlock(&bond->curr_slave_lock); | |
3144 | } | |
3145 | ||
305d552a BH |
3146 | if (bond->send_unsol_na) { |
3147 | read_lock(&bond->curr_slave_lock); | |
3148 | bond_send_unsolicited_na(bond); | |
3149 | read_unlock(&bond->curr_slave_lock); | |
3150 | } | |
3151 | ||
b2220cad JV |
3152 | if (bond_ab_arp_inspect(bond, delta_in_ticks)) { |
3153 | read_unlock(&bond->lock); | |
3154 | rtnl_lock(); | |
3155 | read_lock(&bond->lock); | |
3156 | ||
3157 | bond_ab_arp_commit(bond, delta_in_ticks); | |
3158 | ||
3159 | read_unlock(&bond->lock); | |
3160 | rtnl_unlock(); | |
3161 | read_lock(&bond->lock); | |
1da177e4 LT |
3162 | } |
3163 | ||
b2220cad JV |
3164 | bond_ab_arp_probe(bond); |
3165 | ||
1da177e4 | 3166 | re_arm: |
3d632c3f | 3167 | if (bond->params.arp_interval) |
1b76b316 | 3168 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); |
1da177e4 LT |
3169 | out: |
3170 | read_unlock(&bond->lock); | |
3171 | } | |
3172 | ||
3173 | /*------------------------------ proc/seq_file-------------------------------*/ | |
3174 | ||
3175 | #ifdef CONFIG_PROC_FS | |
3176 | ||
1da177e4 | 3177 | static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos) |
1f78d9f9 HE |
3178 | __acquires(&dev_base_lock) |
3179 | __acquires(&bond->lock) | |
1da177e4 LT |
3180 | { |
3181 | struct bonding *bond = seq->private; | |
3182 | loff_t off = 0; | |
3183 | struct slave *slave; | |
3184 | int i; | |
3185 | ||
3186 | /* make sure the bond won't be taken away */ | |
3187 | read_lock(&dev_base_lock); | |
6603a6f2 | 3188 | read_lock(&bond->lock); |
1da177e4 | 3189 | |
3d632c3f | 3190 | if (*pos == 0) |
1da177e4 | 3191 | return SEQ_START_TOKEN; |
1da177e4 LT |
3192 | |
3193 | bond_for_each_slave(bond, slave, i) { | |
3d632c3f | 3194 | if (++off == *pos) |
1da177e4 | 3195 | return slave; |
1da177e4 LT |
3196 | } |
3197 | ||
3198 | return NULL; | |
3199 | } | |
3200 | ||
3201 | static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
3202 | { | |
3203 | struct bonding *bond = seq->private; | |
3204 | struct slave *slave = v; | |
3205 | ||
3206 | ++*pos; | |
3d632c3f | 3207 | if (v == SEQ_START_TOKEN) |
1da177e4 | 3208 | return bond->first_slave; |
1da177e4 LT |
3209 | |
3210 | slave = slave->next; | |
3211 | ||
3212 | return (slave == bond->first_slave) ? NULL : slave; | |
3213 | } | |
3214 | ||
3215 | static void bond_info_seq_stop(struct seq_file *seq, void *v) | |
1f78d9f9 HE |
3216 | __releases(&bond->lock) |
3217 | __releases(&dev_base_lock) | |
1da177e4 LT |
3218 | { |
3219 | struct bonding *bond = seq->private; | |
3220 | ||
6603a6f2 | 3221 | read_unlock(&bond->lock); |
1da177e4 LT |
3222 | read_unlock(&dev_base_lock); |
3223 | } | |
3224 | ||
3225 | static void bond_info_show_master(struct seq_file *seq) | |
3226 | { | |
3227 | struct bonding *bond = seq->private; | |
3228 | struct slave *curr; | |
4756b02f | 3229 | int i; |
1da177e4 LT |
3230 | |
3231 | read_lock(&bond->curr_slave_lock); | |
3232 | curr = bond->curr_active_slave; | |
3233 | read_unlock(&bond->curr_slave_lock); | |
3234 | ||
dd957c57 | 3235 | seq_printf(seq, "Bonding Mode: %s", |
1da177e4 LT |
3236 | bond_mode_name(bond->params.mode)); |
3237 | ||
dd957c57 JV |
3238 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP && |
3239 | bond->params.fail_over_mac) | |
3915c1e8 JV |
3240 | seq_printf(seq, " (fail_over_mac %s)", |
3241 | fail_over_mac_tbl[bond->params.fail_over_mac].modename); | |
dd957c57 JV |
3242 | |
3243 | seq_printf(seq, "\n"); | |
3244 | ||
c61b75ad MW |
3245 | if (bond->params.mode == BOND_MODE_XOR || |
3246 | bond->params.mode == BOND_MODE_8023AD) { | |
3247 | seq_printf(seq, "Transmit Hash Policy: %s (%d)\n", | |
3248 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, | |
3249 | bond->params.xmit_policy); | |
3250 | } | |
3251 | ||
1da177e4 LT |
3252 | if (USES_PRIMARY(bond->params.mode)) { |
3253 | seq_printf(seq, "Primary Slave: %s\n", | |
0f418b2a MW |
3254 | (bond->primary_slave) ? |
3255 | bond->primary_slave->dev->name : "None"); | |
1da177e4 LT |
3256 | |
3257 | seq_printf(seq, "Currently Active Slave: %s\n", | |
3258 | (curr) ? curr->dev->name : "None"); | |
3259 | } | |
3260 | ||
ff59c456 JV |
3261 | seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ? |
3262 | "up" : "down"); | |
1da177e4 LT |
3263 | seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon); |
3264 | seq_printf(seq, "Up Delay (ms): %d\n", | |
3265 | bond->params.updelay * bond->params.miimon); | |
3266 | seq_printf(seq, "Down Delay (ms): %d\n", | |
3267 | bond->params.downdelay * bond->params.miimon); | |
3268 | ||
4756b02f MW |
3269 | |
3270 | /* ARP information */ | |
3d632c3f SH |
3271 | if (bond->params.arp_interval > 0) { |
3272 | int printed = 0; | |
4756b02f MW |
3273 | seq_printf(seq, "ARP Polling Interval (ms): %d\n", |
3274 | bond->params.arp_interval); | |
3275 | ||
3276 | seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); | |
3277 | ||
3d632c3f | 3278 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
4756b02f | 3279 | if (!bond->params.arp_targets[i]) |
5a31bec0 | 3280 | break; |
4756b02f MW |
3281 | if (printed) |
3282 | seq_printf(seq, ","); | |
8cf14e38 | 3283 | seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); |
4756b02f MW |
3284 | printed = 1; |
3285 | } | |
3286 | seq_printf(seq, "\n"); | |
3287 | } | |
3288 | ||
1da177e4 LT |
3289 | if (bond->params.mode == BOND_MODE_8023AD) { |
3290 | struct ad_info ad_info; | |
3291 | ||
3292 | seq_puts(seq, "\n802.3ad info\n"); | |
3293 | seq_printf(seq, "LACP rate: %s\n", | |
3294 | (bond->params.lacp_fast) ? "fast" : "slow"); | |
fd989c83 JV |
3295 | seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", |
3296 | ad_select_tbl[bond->params.ad_select].modename); | |
1da177e4 LT |
3297 | |
3298 | if (bond_3ad_get_active_agg_info(bond, &ad_info)) { | |
3299 | seq_printf(seq, "bond %s has no active aggregator\n", | |
3300 | bond->dev->name); | |
3301 | } else { | |
3302 | seq_printf(seq, "Active Aggregator Info:\n"); | |
3303 | ||
3304 | seq_printf(seq, "\tAggregator ID: %d\n", | |
3305 | ad_info.aggregator_id); | |
3306 | seq_printf(seq, "\tNumber of ports: %d\n", | |
3307 | ad_info.ports); | |
3308 | seq_printf(seq, "\tActor Key: %d\n", | |
3309 | ad_info.actor_key); | |
3310 | seq_printf(seq, "\tPartner Key: %d\n", | |
3311 | ad_info.partner_key); | |
e174961c JB |
3312 | seq_printf(seq, "\tPartner Mac Address: %pM\n", |
3313 | ad_info.partner_system); | |
1da177e4 LT |
3314 | } |
3315 | } | |
3316 | } | |
3317 | ||
3d632c3f SH |
3318 | static void bond_info_show_slave(struct seq_file *seq, |
3319 | const struct slave *slave) | |
1da177e4 LT |
3320 | { |
3321 | struct bonding *bond = seq->private; | |
3322 | ||
3323 | seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); | |
3324 | seq_printf(seq, "MII Status: %s\n", | |
3325 | (slave->link == BOND_LINK_UP) ? "up" : "down"); | |
65509645 | 3326 | seq_printf(seq, "Link Failure Count: %u\n", |
1da177e4 LT |
3327 | slave->link_failure_count); |
3328 | ||
e174961c | 3329 | seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr); |
1da177e4 LT |
3330 | |
3331 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3332 | const struct aggregator *agg | |
3333 | = SLAVE_AD_INFO(slave).port.aggregator; | |
3334 | ||
3d632c3f | 3335 | if (agg) |
1da177e4 LT |
3336 | seq_printf(seq, "Aggregator ID: %d\n", |
3337 | agg->aggregator_identifier); | |
3d632c3f | 3338 | else |
1da177e4 | 3339 | seq_puts(seq, "Aggregator ID: N/A\n"); |
1da177e4 LT |
3340 | } |
3341 | } | |
3342 | ||
3343 | static int bond_info_seq_show(struct seq_file *seq, void *v) | |
3344 | { | |
3345 | if (v == SEQ_START_TOKEN) { | |
3346 | seq_printf(seq, "%s\n", version); | |
3347 | bond_info_show_master(seq); | |
3d632c3f | 3348 | } else |
1da177e4 | 3349 | bond_info_show_slave(seq, v); |
1da177e4 LT |
3350 | |
3351 | return 0; | |
3352 | } | |
3353 | ||
4101dec9 | 3354 | static const struct seq_operations bond_info_seq_ops = { |
1da177e4 LT |
3355 | .start = bond_info_seq_start, |
3356 | .next = bond_info_seq_next, | |
3357 | .stop = bond_info_seq_stop, | |
3358 | .show = bond_info_seq_show, | |
3359 | }; | |
3360 | ||
3361 | static int bond_info_open(struct inode *inode, struct file *file) | |
3362 | { | |
3363 | struct seq_file *seq; | |
3364 | struct proc_dir_entry *proc; | |
3365 | int res; | |
3366 | ||
3367 | res = seq_open(file, &bond_info_seq_ops); | |
3368 | if (!res) { | |
3369 | /* recover the pointer buried in proc_dir_entry data */ | |
3370 | seq = file->private_data; | |
3371 | proc = PDE(inode); | |
3372 | seq->private = proc->data; | |
3373 | } | |
3374 | ||
3375 | return res; | |
3376 | } | |
3377 | ||
d54b1fdb | 3378 | static const struct file_operations bond_info_fops = { |
1da177e4 LT |
3379 | .owner = THIS_MODULE, |
3380 | .open = bond_info_open, | |
3381 | .read = seq_read, | |
3382 | .llseek = seq_lseek, | |
3383 | .release = seq_release, | |
3384 | }; | |
3385 | ||
3386 | static int bond_create_proc_entry(struct bonding *bond) | |
3387 | { | |
3388 | struct net_device *bond_dev = bond->dev; | |
3389 | ||
3390 | if (bond_proc_dir) { | |
a95609cb DL |
3391 | bond->proc_entry = proc_create_data(bond_dev->name, |
3392 | S_IRUGO, bond_proc_dir, | |
3393 | &bond_info_fops, bond); | |
3d632c3f SH |
3394 | if (bond->proc_entry == NULL) |
3395 | pr_warning(DRV_NAME | |
1da177e4 LT |
3396 | ": Warning: Cannot create /proc/net/%s/%s\n", |
3397 | DRV_NAME, bond_dev->name); | |
3d632c3f | 3398 | else |
1da177e4 | 3399 | memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); |
1da177e4 LT |
3400 | } |
3401 | ||
3402 | return 0; | |
3403 | } | |
3404 | ||
3405 | static void bond_remove_proc_entry(struct bonding *bond) | |
3406 | { | |
3407 | if (bond_proc_dir && bond->proc_entry) { | |
3408 | remove_proc_entry(bond->proc_file_name, bond_proc_dir); | |
3409 | memset(bond->proc_file_name, 0, IFNAMSIZ); | |
3410 | bond->proc_entry = NULL; | |
3411 | } | |
3412 | } | |
3413 | ||
3414 | /* Create the bonding directory under /proc/net, if doesn't exist yet. | |
3415 | * Caller must hold rtnl_lock. | |
3416 | */ | |
3417 | static void bond_create_proc_dir(void) | |
3418 | { | |
1da177e4 | 3419 | if (!bond_proc_dir) { |
457c4cbc | 3420 | bond_proc_dir = proc_mkdir(DRV_NAME, init_net.proc_net); |
99b76233 | 3421 | if (!bond_proc_dir) |
3d632c3f | 3422 | pr_warning(DRV_NAME |
1da177e4 LT |
3423 | ": Warning: cannot create /proc/net/%s\n", |
3424 | DRV_NAME); | |
1da177e4 LT |
3425 | } |
3426 | } | |
3427 | ||
3428 | /* Destroy the bonding directory under /proc/net, if empty. | |
3429 | * Caller must hold rtnl_lock. | |
3430 | */ | |
3431 | static void bond_destroy_proc_dir(void) | |
3432 | { | |
99b76233 | 3433 | if (bond_proc_dir) { |
457c4cbc | 3434 | remove_proc_entry(DRV_NAME, init_net.proc_net); |
1da177e4 LT |
3435 | bond_proc_dir = NULL; |
3436 | } | |
3437 | } | |
aee64faf JP |
3438 | |
3439 | #else /* !CONFIG_PROC_FS */ | |
3440 | ||
3441 | static int bond_create_proc_entry(struct bonding *bond) | |
3442 | { | |
3443 | } | |
3444 | ||
3445 | static void bond_remove_proc_entry(struct bonding *bond) | |
3446 | { | |
3447 | } | |
3448 | ||
3449 | static void bond_create_proc_dir(void) | |
3450 | { | |
3451 | } | |
3452 | ||
3453 | static void bond_destroy_proc_dir(void) | |
3454 | { | |
3455 | } | |
3456 | ||
1da177e4 LT |
3457 | #endif /* CONFIG_PROC_FS */ |
3458 | ||
aee64faf | 3459 | |
1da177e4 LT |
3460 | /*-------------------------- netdev event handling --------------------------*/ |
3461 | ||
3462 | /* | |
3463 | * Change device name | |
3464 | */ | |
3465 | static int bond_event_changename(struct bonding *bond) | |
3466 | { | |
1da177e4 LT |
3467 | bond_remove_proc_entry(bond); |
3468 | bond_create_proc_entry(bond); | |
7e083840 | 3469 | |
3d632c3f SH |
3470 | bond_destroy_sysfs_entry(bond); |
3471 | bond_create_sysfs_entry(bond); | |
7e083840 | 3472 | |
1da177e4 LT |
3473 | return NOTIFY_DONE; |
3474 | } | |
3475 | ||
3d632c3f SH |
3476 | static int bond_master_netdev_event(unsigned long event, |
3477 | struct net_device *bond_dev) | |
1da177e4 | 3478 | { |
454d7c9b | 3479 | struct bonding *event_bond = netdev_priv(bond_dev); |
1da177e4 LT |
3480 | |
3481 | switch (event) { | |
3482 | case NETDEV_CHANGENAME: | |
3483 | return bond_event_changename(event_bond); | |
3484 | case NETDEV_UNREGISTER: | |
3b96c858 | 3485 | bond_release_all(event_bond->dev); |
1da177e4 LT |
3486 | break; |
3487 | default: | |
3488 | break; | |
3489 | } | |
3490 | ||
3491 | return NOTIFY_DONE; | |
3492 | } | |
3493 | ||
3d632c3f SH |
3494 | static int bond_slave_netdev_event(unsigned long event, |
3495 | struct net_device *slave_dev) | |
1da177e4 LT |
3496 | { |
3497 | struct net_device *bond_dev = slave_dev->master; | |
454d7c9b | 3498 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3499 | |
3500 | switch (event) { | |
3501 | case NETDEV_UNREGISTER: | |
3502 | if (bond_dev) { | |
1284cd3a JV |
3503 | if (bond->setup_by_slave) |
3504 | bond_release_and_destroy(bond_dev, slave_dev); | |
3505 | else | |
3506 | bond_release(bond_dev, slave_dev); | |
1da177e4 LT |
3507 | } |
3508 | break; | |
3509 | case NETDEV_CHANGE: | |
17d04500 JV |
3510 | if (bond->params.mode == BOND_MODE_8023AD || bond_is_lb(bond)) { |
3511 | struct slave *slave; | |
3512 | ||
3513 | slave = bond_get_slave_by_dev(bond, slave_dev); | |
3514 | if (slave) { | |
3515 | u16 old_speed = slave->speed; | |
3516 | u16 old_duplex = slave->duplex; | |
3517 | ||
3518 | bond_update_speed_duplex(slave); | |
3519 | ||
3520 | if (bond_is_lb(bond)) | |
3521 | break; | |
3522 | ||
3523 | if (old_speed != slave->speed) | |
3524 | bond_3ad_adapter_speed_changed(slave); | |
3525 | if (old_duplex != slave->duplex) | |
3526 | bond_3ad_adapter_duplex_changed(slave); | |
3527 | } | |
3528 | } | |
3529 | ||
1da177e4 LT |
3530 | break; |
3531 | case NETDEV_DOWN: | |
3532 | /* | |
3533 | * ... Or is it this? | |
3534 | */ | |
3535 | break; | |
3536 | case NETDEV_CHANGEMTU: | |
3537 | /* | |
3538 | * TODO: Should slaves be allowed to | |
3539 | * independently alter their MTU? For | |
3540 | * an active-backup bond, slaves need | |
3541 | * not be the same type of device, so | |
3542 | * MTUs may vary. For other modes, | |
3543 | * slaves arguably should have the | |
3544 | * same MTUs. To do this, we'd need to | |
3545 | * take over the slave's change_mtu | |
3546 | * function for the duration of their | |
3547 | * servitude. | |
3548 | */ | |
3549 | break; | |
3550 | case NETDEV_CHANGENAME: | |
3551 | /* | |
3552 | * TODO: handle changing the primary's name | |
3553 | */ | |
3554 | break; | |
8531c5ff AK |
3555 | case NETDEV_FEAT_CHANGE: |
3556 | bond_compute_features(bond); | |
3557 | break; | |
1da177e4 LT |
3558 | default: |
3559 | break; | |
3560 | } | |
3561 | ||
3562 | return NOTIFY_DONE; | |
3563 | } | |
3564 | ||
3565 | /* | |
3566 | * bond_netdev_event: handle netdev notifier chain events. | |
3567 | * | |
3568 | * This function receives events for the netdev chain. The caller (an | |
e041c683 | 3569 | * ioctl handler calling blocking_notifier_call_chain) holds the necessary |
1da177e4 LT |
3570 | * locks for us to safely manipulate the slave devices (RTNL lock, |
3571 | * dev_probe_lock). | |
3572 | */ | |
3d632c3f SH |
3573 | static int bond_netdev_event(struct notifier_block *this, |
3574 | unsigned long event, void *ptr) | |
1da177e4 LT |
3575 | { |
3576 | struct net_device *event_dev = (struct net_device *)ptr; | |
3577 | ||
c346dca1 | 3578 | if (dev_net(event_dev) != &init_net) |
e9dc8653 EB |
3579 | return NOTIFY_DONE; |
3580 | ||
5a03cdb7 | 3581 | pr_debug("event_dev: %s, event: %lx\n", |
1da177e4 LT |
3582 | (event_dev ? event_dev->name : "None"), |
3583 | event); | |
3584 | ||
0b680e75 JV |
3585 | if (!(event_dev->priv_flags & IFF_BONDING)) |
3586 | return NOTIFY_DONE; | |
3587 | ||
1da177e4 | 3588 | if (event_dev->flags & IFF_MASTER) { |
5a03cdb7 | 3589 | pr_debug("IFF_MASTER\n"); |
1da177e4 LT |
3590 | return bond_master_netdev_event(event, event_dev); |
3591 | } | |
3592 | ||
3593 | if (event_dev->flags & IFF_SLAVE) { | |
5a03cdb7 | 3594 | pr_debug("IFF_SLAVE\n"); |
1da177e4 LT |
3595 | return bond_slave_netdev_event(event, event_dev); |
3596 | } | |
3597 | ||
3598 | return NOTIFY_DONE; | |
3599 | } | |
3600 | ||
c3ade5ca JV |
3601 | /* |
3602 | * bond_inetaddr_event: handle inetaddr notifier chain events. | |
3603 | * | |
3604 | * We keep track of device IPs primarily to use as source addresses in | |
3605 | * ARP monitor probes (rather than spewing out broadcasts all the time). | |
3606 | * | |
3607 | * We track one IP for the main device (if it has one), plus one per VLAN. | |
3608 | */ | |
3609 | static int bond_inetaddr_event(struct notifier_block *this, unsigned long event, void *ptr) | |
3610 | { | |
3611 | struct in_ifaddr *ifa = ptr; | |
3612 | struct net_device *vlan_dev, *event_dev = ifa->ifa_dev->dev; | |
0883beca PE |
3613 | struct bonding *bond; |
3614 | struct vlan_entry *vlan; | |
c3ade5ca | 3615 | |
c346dca1 | 3616 | if (dev_net(ifa->ifa_dev->dev) != &init_net) |
6133fb1a DL |
3617 | return NOTIFY_DONE; |
3618 | ||
0883beca | 3619 | list_for_each_entry(bond, &bond_dev_list, bond_list) { |
c3ade5ca JV |
3620 | if (bond->dev == event_dev) { |
3621 | switch (event) { | |
3622 | case NETDEV_UP: | |
3623 | bond->master_ip = ifa->ifa_local; | |
3624 | return NOTIFY_OK; | |
3625 | case NETDEV_DOWN: | |
3626 | bond->master_ip = bond_glean_dev_ip(bond->dev); | |
3627 | return NOTIFY_OK; | |
3628 | default: | |
3629 | return NOTIFY_DONE; | |
3630 | } | |
3631 | } | |
3632 | ||
0883beca | 3633 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
5c15bdec | 3634 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
3635 | if (vlan_dev == event_dev) { |
3636 | switch (event) { | |
3637 | case NETDEV_UP: | |
3638 | vlan->vlan_ip = ifa->ifa_local; | |
3639 | return NOTIFY_OK; | |
3640 | case NETDEV_DOWN: | |
3641 | vlan->vlan_ip = | |
3642 | bond_glean_dev_ip(vlan_dev); | |
3643 | return NOTIFY_OK; | |
3644 | default: | |
3645 | return NOTIFY_DONE; | |
3646 | } | |
3647 | } | |
3648 | } | |
3649 | } | |
3650 | return NOTIFY_DONE; | |
3651 | } | |
3652 | ||
1da177e4 LT |
3653 | static struct notifier_block bond_netdev_notifier = { |
3654 | .notifier_call = bond_netdev_event, | |
3655 | }; | |
3656 | ||
c3ade5ca JV |
3657 | static struct notifier_block bond_inetaddr_notifier = { |
3658 | .notifier_call = bond_inetaddr_event, | |
3659 | }; | |
3660 | ||
1da177e4 LT |
3661 | /*-------------------------- Packet type handling ---------------------------*/ |
3662 | ||
3663 | /* register to receive lacpdus on a bond */ | |
3664 | static void bond_register_lacpdu(struct bonding *bond) | |
3665 | { | |
3666 | struct packet_type *pk_type = &(BOND_AD_INFO(bond).ad_pkt_type); | |
3667 | ||
3668 | /* initialize packet type */ | |
3669 | pk_type->type = PKT_TYPE_LACPDU; | |
3670 | pk_type->dev = bond->dev; | |
3671 | pk_type->func = bond_3ad_lacpdu_recv; | |
3672 | ||
3673 | dev_add_pack(pk_type); | |
3674 | } | |
3675 | ||
3676 | /* unregister to receive lacpdus on a bond */ | |
3677 | static void bond_unregister_lacpdu(struct bonding *bond) | |
3678 | { | |
3679 | dev_remove_pack(&(BOND_AD_INFO(bond).ad_pkt_type)); | |
3680 | } | |
3681 | ||
f5b2b966 JV |
3682 | void bond_register_arp(struct bonding *bond) |
3683 | { | |
3684 | struct packet_type *pt = &bond->arp_mon_pt; | |
3685 | ||
c4f283b1 JV |
3686 | if (pt->type) |
3687 | return; | |
3688 | ||
f5b2b966 | 3689 | pt->type = htons(ETH_P_ARP); |
e245cb71 | 3690 | pt->dev = bond->dev; |
f5b2b966 JV |
3691 | pt->func = bond_arp_rcv; |
3692 | dev_add_pack(pt); | |
3693 | } | |
3694 | ||
3695 | void bond_unregister_arp(struct bonding *bond) | |
3696 | { | |
c4f283b1 JV |
3697 | struct packet_type *pt = &bond->arp_mon_pt; |
3698 | ||
3699 | dev_remove_pack(pt); | |
3700 | pt->type = 0; | |
f5b2b966 JV |
3701 | } |
3702 | ||
169a3e66 JV |
3703 | /*---------------------------- Hashing Policies -----------------------------*/ |
3704 | ||
6f6652be JV |
3705 | /* |
3706 | * Hash for the output device based upon layer 2 and layer 3 data. If | |
3707 | * the packet is not IP mimic bond_xmit_hash_policy_l2() | |
3708 | */ | |
3709 | static int bond_xmit_hash_policy_l23(struct sk_buff *skb, | |
3710 | struct net_device *bond_dev, int count) | |
3711 | { | |
3712 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
3713 | struct iphdr *iph = ip_hdr(skb); | |
3714 | ||
f14c4e4e | 3715 | if (skb->protocol == htons(ETH_P_IP)) { |
6f6652be JV |
3716 | return ((ntohl(iph->saddr ^ iph->daddr) & 0xffff) ^ |
3717 | (data->h_dest[5] ^ bond_dev->dev_addr[5])) % count; | |
3718 | } | |
3719 | ||
3720 | return (data->h_dest[5] ^ bond_dev->dev_addr[5]) % count; | |
3721 | } | |
3722 | ||
169a3e66 | 3723 | /* |
59c51591 | 3724 | * Hash for the output device based upon layer 3 and layer 4 data. If |
169a3e66 JV |
3725 | * the packet is a frag or not TCP or UDP, just use layer 3 data. If it is |
3726 | * altogether not IP, mimic bond_xmit_hash_policy_l2() | |
3727 | */ | |
3728 | static int bond_xmit_hash_policy_l34(struct sk_buff *skb, | |
3729 | struct net_device *bond_dev, int count) | |
3730 | { | |
3731 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
eddc9ec5 | 3732 | struct iphdr *iph = ip_hdr(skb); |
d3bb52b0 | 3733 | __be16 *layer4hdr = (__be16 *)((u32 *)iph + iph->ihl); |
169a3e66 JV |
3734 | int layer4_xor = 0; |
3735 | ||
f14c4e4e BH |
3736 | if (skb->protocol == htons(ETH_P_IP)) { |
3737 | if (!(iph->frag_off & htons(IP_MF|IP_OFFSET)) && | |
169a3e66 JV |
3738 | (iph->protocol == IPPROTO_TCP || |
3739 | iph->protocol == IPPROTO_UDP)) { | |
d3bb52b0 | 3740 | layer4_xor = ntohs((*layer4hdr ^ *(layer4hdr + 1))); |
169a3e66 JV |
3741 | } |
3742 | return (layer4_xor ^ | |
3743 | ((ntohl(iph->saddr ^ iph->daddr)) & 0xffff)) % count; | |
3744 | ||
3745 | } | |
3746 | ||
3747 | return (data->h_dest[5] ^ bond_dev->dev_addr[5]) % count; | |
3748 | } | |
3749 | ||
3750 | /* | |
3751 | * Hash for the output device based upon layer 2 data | |
3752 | */ | |
3753 | static int bond_xmit_hash_policy_l2(struct sk_buff *skb, | |
3754 | struct net_device *bond_dev, int count) | |
3755 | { | |
3756 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
3757 | ||
3758 | return (data->h_dest[5] ^ bond_dev->dev_addr[5]) % count; | |
3759 | } | |
3760 | ||
1da177e4 LT |
3761 | /*-------------------------- Device entry points ----------------------------*/ |
3762 | ||
3763 | static int bond_open(struct net_device *bond_dev) | |
3764 | { | |
454d7c9b | 3765 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3766 | |
3767 | bond->kill_timers = 0; | |
3768 | ||
58402054 | 3769 | if (bond_is_lb(bond)) { |
1da177e4 LT |
3770 | /* bond_alb_initialize must be called before the timer |
3771 | * is started. | |
3772 | */ | |
3773 | if (bond_alb_initialize(bond, (bond->params.mode == BOND_MODE_ALB))) { | |
3774 | /* something went wrong - fail the open operation */ | |
3775 | return -1; | |
3776 | } | |
3777 | ||
1b76b316 JV |
3778 | INIT_DELAYED_WORK(&bond->alb_work, bond_alb_monitor); |
3779 | queue_delayed_work(bond->wq, &bond->alb_work, 0); | |
1da177e4 LT |
3780 | } |
3781 | ||
3782 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ | |
1b76b316 JV |
3783 | INIT_DELAYED_WORK(&bond->mii_work, bond_mii_monitor); |
3784 | queue_delayed_work(bond->wq, &bond->mii_work, 0); | |
1da177e4 LT |
3785 | } |
3786 | ||
3787 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ | |
1b76b316 JV |
3788 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) |
3789 | INIT_DELAYED_WORK(&bond->arp_work, | |
3790 | bond_activebackup_arp_mon); | |
3791 | else | |
3792 | INIT_DELAYED_WORK(&bond->arp_work, | |
3793 | bond_loadbalance_arp_mon); | |
3794 | ||
3795 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
f5b2b966 JV |
3796 | if (bond->params.arp_validate) |
3797 | bond_register_arp(bond); | |
1da177e4 LT |
3798 | } |
3799 | ||
3800 | if (bond->params.mode == BOND_MODE_8023AD) { | |
a40745f5 | 3801 | INIT_DELAYED_WORK(&bond->ad_work, bond_3ad_state_machine_handler); |
1b76b316 | 3802 | queue_delayed_work(bond->wq, &bond->ad_work, 0); |
1da177e4 LT |
3803 | /* register to receive LACPDUs */ |
3804 | bond_register_lacpdu(bond); | |
fd989c83 | 3805 | bond_3ad_initiate_agg_selection(bond, 1); |
1da177e4 LT |
3806 | } |
3807 | ||
3808 | return 0; | |
3809 | } | |
3810 | ||
3811 | static int bond_close(struct net_device *bond_dev) | |
3812 | { | |
454d7c9b | 3813 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3814 | |
3815 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3816 | /* Unregister the receive of LACPDUs */ | |
3817 | bond_unregister_lacpdu(bond); | |
3818 | } | |
3819 | ||
f5b2b966 JV |
3820 | if (bond->params.arp_validate) |
3821 | bond_unregister_arp(bond); | |
3822 | ||
1da177e4 LT |
3823 | write_lock_bh(&bond->lock); |
3824 | ||
b59f9f74 | 3825 | bond->send_grat_arp = 0; |
305d552a | 3826 | bond->send_unsol_na = 0; |
1da177e4 LT |
3827 | |
3828 | /* signal timers not to re-arm */ | |
3829 | bond->kill_timers = 1; | |
3830 | ||
3831 | write_unlock_bh(&bond->lock); | |
3832 | ||
1da177e4 | 3833 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ |
1b76b316 | 3834 | cancel_delayed_work(&bond->mii_work); |
1da177e4 LT |
3835 | } |
3836 | ||
3837 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ | |
1b76b316 | 3838 | cancel_delayed_work(&bond->arp_work); |
1da177e4 LT |
3839 | } |
3840 | ||
3841 | switch (bond->params.mode) { | |
3842 | case BOND_MODE_8023AD: | |
1b76b316 | 3843 | cancel_delayed_work(&bond->ad_work); |
1da177e4 LT |
3844 | break; |
3845 | case BOND_MODE_TLB: | |
3846 | case BOND_MODE_ALB: | |
1b76b316 | 3847 | cancel_delayed_work(&bond->alb_work); |
1da177e4 LT |
3848 | break; |
3849 | default: | |
3850 | break; | |
3851 | } | |
3852 | ||
1da177e4 | 3853 | |
58402054 | 3854 | if (bond_is_lb(bond)) { |
1da177e4 LT |
3855 | /* Must be called only after all |
3856 | * slaves have been released | |
3857 | */ | |
3858 | bond_alb_deinitialize(bond); | |
3859 | } | |
3860 | ||
3861 | return 0; | |
3862 | } | |
3863 | ||
3864 | static struct net_device_stats *bond_get_stats(struct net_device *bond_dev) | |
3865 | { | |
454d7c9b | 3866 | struct bonding *bond = netdev_priv(bond_dev); |
eeda3fd6 | 3867 | struct net_device_stats *stats = &bond->stats; |
2439f9eb | 3868 | struct net_device_stats local_stats; |
1da177e4 LT |
3869 | struct slave *slave; |
3870 | int i; | |
3871 | ||
2439f9eb | 3872 | memset(&local_stats, 0, sizeof(struct net_device_stats)); |
1da177e4 LT |
3873 | |
3874 | read_lock_bh(&bond->lock); | |
3875 | ||
3876 | bond_for_each_slave(bond, slave, i) { | |
eeda3fd6 SH |
3877 | const struct net_device_stats *sstats = dev_get_stats(slave->dev); |
3878 | ||
2439f9eb AG |
3879 | local_stats.rx_packets += sstats->rx_packets; |
3880 | local_stats.rx_bytes += sstats->rx_bytes; | |
3881 | local_stats.rx_errors += sstats->rx_errors; | |
3882 | local_stats.rx_dropped += sstats->rx_dropped; | |
3883 | ||
3884 | local_stats.tx_packets += sstats->tx_packets; | |
3885 | local_stats.tx_bytes += sstats->tx_bytes; | |
3886 | local_stats.tx_errors += sstats->tx_errors; | |
3887 | local_stats.tx_dropped += sstats->tx_dropped; | |
3888 | ||
3889 | local_stats.multicast += sstats->multicast; | |
3890 | local_stats.collisions += sstats->collisions; | |
3891 | ||
3892 | local_stats.rx_length_errors += sstats->rx_length_errors; | |
3893 | local_stats.rx_over_errors += sstats->rx_over_errors; | |
3894 | local_stats.rx_crc_errors += sstats->rx_crc_errors; | |
3895 | local_stats.rx_frame_errors += sstats->rx_frame_errors; | |
3896 | local_stats.rx_fifo_errors += sstats->rx_fifo_errors; | |
3897 | local_stats.rx_missed_errors += sstats->rx_missed_errors; | |
3898 | ||
3899 | local_stats.tx_aborted_errors += sstats->tx_aborted_errors; | |
3900 | local_stats.tx_carrier_errors += sstats->tx_carrier_errors; | |
3901 | local_stats.tx_fifo_errors += sstats->tx_fifo_errors; | |
3902 | local_stats.tx_heartbeat_errors += sstats->tx_heartbeat_errors; | |
3903 | local_stats.tx_window_errors += sstats->tx_window_errors; | |
3904 | } | |
3905 | ||
3906 | memcpy(stats, &local_stats, sizeof(struct net_device_stats)); | |
1da177e4 LT |
3907 | |
3908 | read_unlock_bh(&bond->lock); | |
3909 | ||
3910 | return stats; | |
3911 | } | |
3912 | ||
3913 | static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd) | |
3914 | { | |
3915 | struct net_device *slave_dev = NULL; | |
3916 | struct ifbond k_binfo; | |
3917 | struct ifbond __user *u_binfo = NULL; | |
3918 | struct ifslave k_sinfo; | |
3919 | struct ifslave __user *u_sinfo = NULL; | |
3920 | struct mii_ioctl_data *mii = NULL; | |
1da177e4 LT |
3921 | int res = 0; |
3922 | ||
5a03cdb7 | 3923 | pr_debug("bond_ioctl: master=%s, cmd=%d\n", |
1da177e4 LT |
3924 | bond_dev->name, cmd); |
3925 | ||
3926 | switch (cmd) { | |
1da177e4 LT |
3927 | case SIOCGMIIPHY: |
3928 | mii = if_mii(ifr); | |
3d632c3f | 3929 | if (!mii) |
1da177e4 | 3930 | return -EINVAL; |
3d632c3f | 3931 | |
1da177e4 LT |
3932 | mii->phy_id = 0; |
3933 | /* Fall Through */ | |
3934 | case SIOCGMIIREG: | |
3935 | /* | |
3936 | * We do this again just in case we were called by SIOCGMIIREG | |
3937 | * instead of SIOCGMIIPHY. | |
3938 | */ | |
3939 | mii = if_mii(ifr); | |
3d632c3f | 3940 | if (!mii) |
1da177e4 | 3941 | return -EINVAL; |
3d632c3f | 3942 | |
1da177e4 LT |
3943 | |
3944 | if (mii->reg_num == 1) { | |
454d7c9b | 3945 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 3946 | mii->val_out = 0; |
6603a6f2 | 3947 | read_lock(&bond->lock); |
1da177e4 | 3948 | read_lock(&bond->curr_slave_lock); |
3d632c3f | 3949 | if (netif_carrier_ok(bond->dev)) |
1da177e4 | 3950 | mii->val_out = BMSR_LSTATUS; |
3d632c3f | 3951 | |
1da177e4 | 3952 | read_unlock(&bond->curr_slave_lock); |
6603a6f2 | 3953 | read_unlock(&bond->lock); |
1da177e4 LT |
3954 | } |
3955 | ||
3956 | return 0; | |
3957 | case BOND_INFO_QUERY_OLD: | |
3958 | case SIOCBONDINFOQUERY: | |
3959 | u_binfo = (struct ifbond __user *)ifr->ifr_data; | |
3960 | ||
3d632c3f | 3961 | if (copy_from_user(&k_binfo, u_binfo, sizeof(ifbond))) |
1da177e4 | 3962 | return -EFAULT; |
1da177e4 LT |
3963 | |
3964 | res = bond_info_query(bond_dev, &k_binfo); | |
3d632c3f SH |
3965 | if (res == 0 && |
3966 | copy_to_user(u_binfo, &k_binfo, sizeof(ifbond))) | |
3967 | return -EFAULT; | |
1da177e4 LT |
3968 | |
3969 | return res; | |
3970 | case BOND_SLAVE_INFO_QUERY_OLD: | |
3971 | case SIOCBONDSLAVEINFOQUERY: | |
3972 | u_sinfo = (struct ifslave __user *)ifr->ifr_data; | |
3973 | ||
3d632c3f | 3974 | if (copy_from_user(&k_sinfo, u_sinfo, sizeof(ifslave))) |
1da177e4 | 3975 | return -EFAULT; |
1da177e4 LT |
3976 | |
3977 | res = bond_slave_info_query(bond_dev, &k_sinfo); | |
3d632c3f SH |
3978 | if (res == 0 && |
3979 | copy_to_user(u_sinfo, &k_sinfo, sizeof(ifslave))) | |
3980 | return -EFAULT; | |
1da177e4 LT |
3981 | |
3982 | return res; | |
3983 | default: | |
3984 | /* Go on */ | |
3985 | break; | |
3986 | } | |
3987 | ||
3d632c3f | 3988 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 3989 | return -EPERM; |
1da177e4 | 3990 | |
881d966b | 3991 | slave_dev = dev_get_by_name(&init_net, ifr->ifr_slave); |
1da177e4 | 3992 | |
5a03cdb7 | 3993 | pr_debug("slave_dev=%p: \n", slave_dev); |
1da177e4 | 3994 | |
3d632c3f | 3995 | if (!slave_dev) |
1da177e4 | 3996 | res = -ENODEV; |
3d632c3f | 3997 | else { |
5a03cdb7 | 3998 | pr_debug("slave_dev->name=%s: \n", slave_dev->name); |
1da177e4 LT |
3999 | switch (cmd) { |
4000 | case BOND_ENSLAVE_OLD: | |
4001 | case SIOCBONDENSLAVE: | |
4002 | res = bond_enslave(bond_dev, slave_dev); | |
4003 | break; | |
4004 | case BOND_RELEASE_OLD: | |
4005 | case SIOCBONDRELEASE: | |
4006 | res = bond_release(bond_dev, slave_dev); | |
4007 | break; | |
4008 | case BOND_SETHWADDR_OLD: | |
4009 | case SIOCBONDSETHWADDR: | |
4010 | res = bond_sethwaddr(bond_dev, slave_dev); | |
4011 | break; | |
4012 | case BOND_CHANGE_ACTIVE_OLD: | |
4013 | case SIOCBONDCHANGEACTIVE: | |
4014 | res = bond_ioctl_change_active(bond_dev, slave_dev); | |
4015 | break; | |
4016 | default: | |
4017 | res = -EOPNOTSUPP; | |
4018 | } | |
4019 | ||
4020 | dev_put(slave_dev); | |
4021 | } | |
4022 | ||
1da177e4 LT |
4023 | return res; |
4024 | } | |
4025 | ||
4026 | static void bond_set_multicast_list(struct net_device *bond_dev) | |
4027 | { | |
454d7c9b | 4028 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4029 | struct dev_mc_list *dmi; |
4030 | ||
1da177e4 LT |
4031 | /* |
4032 | * Do promisc before checking multicast_mode | |
4033 | */ | |
3d632c3f | 4034 | if ((bond_dev->flags & IFF_PROMISC) && !(bond->flags & IFF_PROMISC)) |
7e1a1ac1 WC |
4035 | /* |
4036 | * FIXME: Need to handle the error when one of the multi-slaves | |
4037 | * encounters error. | |
4038 | */ | |
1da177e4 | 4039 | bond_set_promiscuity(bond, 1); |
1da177e4 | 4040 | |
3d632c3f SH |
4041 | |
4042 | if (!(bond_dev->flags & IFF_PROMISC) && (bond->flags & IFF_PROMISC)) | |
1da177e4 | 4043 | bond_set_promiscuity(bond, -1); |
3d632c3f | 4044 | |
1da177e4 LT |
4045 | |
4046 | /* set allmulti flag to slaves */ | |
3d632c3f | 4047 | if ((bond_dev->flags & IFF_ALLMULTI) && !(bond->flags & IFF_ALLMULTI)) |
7e1a1ac1 WC |
4048 | /* |
4049 | * FIXME: Need to handle the error when one of the multi-slaves | |
4050 | * encounters error. | |
4051 | */ | |
1da177e4 | 4052 | bond_set_allmulti(bond, 1); |
1da177e4 | 4053 | |
3d632c3f SH |
4054 | |
4055 | if (!(bond_dev->flags & IFF_ALLMULTI) && (bond->flags & IFF_ALLMULTI)) | |
1da177e4 | 4056 | bond_set_allmulti(bond, -1); |
3d632c3f | 4057 | |
1da177e4 | 4058 | |
80ee5ad2 JV |
4059 | read_lock(&bond->lock); |
4060 | ||
1da177e4 LT |
4061 | bond->flags = bond_dev->flags; |
4062 | ||
4063 | /* looking for addresses to add to slaves' mc list */ | |
4064 | for (dmi = bond_dev->mc_list; dmi; dmi = dmi->next) { | |
3d632c3f | 4065 | if (!bond_mc_list_find_dmi(dmi, bond->mc_list)) |
1da177e4 | 4066 | bond_mc_add(bond, dmi->dmi_addr, dmi->dmi_addrlen); |
1da177e4 LT |
4067 | } |
4068 | ||
4069 | /* looking for addresses to delete from slaves' list */ | |
4070 | for (dmi = bond->mc_list; dmi; dmi = dmi->next) { | |
3d632c3f | 4071 | if (!bond_mc_list_find_dmi(dmi, bond_dev->mc_list)) |
1da177e4 | 4072 | bond_mc_delete(bond, dmi->dmi_addr, dmi->dmi_addrlen); |
1da177e4 LT |
4073 | } |
4074 | ||
4075 | /* save master's multicast list */ | |
4076 | bond_mc_list_destroy(bond); | |
4077 | bond_mc_list_copy(bond_dev->mc_list, bond, GFP_ATOMIC); | |
4078 | ||
80ee5ad2 | 4079 | read_unlock(&bond->lock); |
1da177e4 LT |
4080 | } |
4081 | ||
00829823 SH |
4082 | static int bond_neigh_setup(struct net_device *dev, struct neigh_parms *parms) |
4083 | { | |
4084 | struct bonding *bond = netdev_priv(dev); | |
4085 | struct slave *slave = bond->first_slave; | |
4086 | ||
4087 | if (slave) { | |
4088 | const struct net_device_ops *slave_ops | |
4089 | = slave->dev->netdev_ops; | |
4090 | if (slave_ops->ndo_neigh_setup) | |
72e2240f | 4091 | return slave_ops->ndo_neigh_setup(slave->dev, parms); |
00829823 SH |
4092 | } |
4093 | return 0; | |
4094 | } | |
4095 | ||
1da177e4 LT |
4096 | /* |
4097 | * Change the MTU of all of a master's slaves to match the master | |
4098 | */ | |
4099 | static int bond_change_mtu(struct net_device *bond_dev, int new_mtu) | |
4100 | { | |
454d7c9b | 4101 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4102 | struct slave *slave, *stop_at; |
4103 | int res = 0; | |
4104 | int i; | |
4105 | ||
5a03cdb7 | 4106 | pr_debug("bond=%p, name=%s, new_mtu=%d\n", bond, |
1da177e4 LT |
4107 | (bond_dev ? bond_dev->name : "None"), new_mtu); |
4108 | ||
4109 | /* Can't hold bond->lock with bh disabled here since | |
4110 | * some base drivers panic. On the other hand we can't | |
4111 | * hold bond->lock without bh disabled because we'll | |
4112 | * deadlock. The only solution is to rely on the fact | |
4113 | * that we're under rtnl_lock here, and the slaves | |
4114 | * list won't change. This doesn't solve the problem | |
4115 | * of setting the slave's MTU while it is | |
4116 | * transmitting, but the assumption is that the base | |
4117 | * driver can handle that. | |
4118 | * | |
4119 | * TODO: figure out a way to safely iterate the slaves | |
4120 | * list, but without holding a lock around the actual | |
4121 | * call to the base driver. | |
4122 | */ | |
4123 | ||
4124 | bond_for_each_slave(bond, slave, i) { | |
5a03cdb7 | 4125 | pr_debug("s %p s->p %p c_m %p\n", slave, |
53a3294e | 4126 | slave->prev, slave->dev->netdev_ops->ndo_change_mtu); |
e944ef79 | 4127 | |
1da177e4 LT |
4128 | res = dev_set_mtu(slave->dev, new_mtu); |
4129 | ||
4130 | if (res) { | |
4131 | /* If we failed to set the slave's mtu to the new value | |
4132 | * we must abort the operation even in ACTIVE_BACKUP | |
4133 | * mode, because if we allow the backup slaves to have | |
4134 | * different mtu values than the active slave we'll | |
4135 | * need to change their mtu when doing a failover. That | |
4136 | * means changing their mtu from timer context, which | |
4137 | * is probably not a good idea. | |
4138 | */ | |
5a03cdb7 | 4139 | pr_debug("err %d %s\n", res, slave->dev->name); |
1da177e4 LT |
4140 | goto unwind; |
4141 | } | |
4142 | } | |
4143 | ||
4144 | bond_dev->mtu = new_mtu; | |
4145 | ||
4146 | return 0; | |
4147 | ||
4148 | unwind: | |
4149 | /* unwind from head to the slave that failed */ | |
4150 | stop_at = slave; | |
4151 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { | |
4152 | int tmp_res; | |
4153 | ||
4154 | tmp_res = dev_set_mtu(slave->dev, bond_dev->mtu); | |
4155 | if (tmp_res) { | |
5a03cdb7 | 4156 | pr_debug("unwind err %d dev %s\n", tmp_res, |
1da177e4 LT |
4157 | slave->dev->name); |
4158 | } | |
4159 | } | |
4160 | ||
4161 | return res; | |
4162 | } | |
4163 | ||
4164 | /* | |
4165 | * Change HW address | |
4166 | * | |
4167 | * Note that many devices must be down to change the HW address, and | |
4168 | * downing the master releases all slaves. We can make bonds full of | |
4169 | * bonding devices to test this, however. | |
4170 | */ | |
4171 | static int bond_set_mac_address(struct net_device *bond_dev, void *addr) | |
4172 | { | |
454d7c9b | 4173 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4174 | struct sockaddr *sa = addr, tmp_sa; |
4175 | struct slave *slave, *stop_at; | |
4176 | int res = 0; | |
4177 | int i; | |
4178 | ||
eb7cc59a SH |
4179 | if (bond->params.mode == BOND_MODE_ALB) |
4180 | return bond_alb_set_mac_address(bond_dev, addr); | |
4181 | ||
4182 | ||
5a03cdb7 | 4183 | pr_debug("bond=%p, name=%s\n", bond, (bond_dev ? bond_dev->name : "None")); |
1da177e4 | 4184 | |
dd957c57 | 4185 | /* |
3915c1e8 JV |
4186 | * If fail_over_mac is set to active, do nothing and return |
4187 | * success. Returning an error causes ifenslave to fail. | |
dd957c57 | 4188 | */ |
3915c1e8 | 4189 | if (bond->params.fail_over_mac == BOND_FOM_ACTIVE) |
dd957c57 | 4190 | return 0; |
2ab82852 | 4191 | |
3d632c3f | 4192 | if (!is_valid_ether_addr(sa->sa_data)) |
1da177e4 | 4193 | return -EADDRNOTAVAIL; |
1da177e4 LT |
4194 | |
4195 | /* Can't hold bond->lock with bh disabled here since | |
4196 | * some base drivers panic. On the other hand we can't | |
4197 | * hold bond->lock without bh disabled because we'll | |
4198 | * deadlock. The only solution is to rely on the fact | |
4199 | * that we're under rtnl_lock here, and the slaves | |
4200 | * list won't change. This doesn't solve the problem | |
4201 | * of setting the slave's hw address while it is | |
4202 | * transmitting, but the assumption is that the base | |
4203 | * driver can handle that. | |
4204 | * | |
4205 | * TODO: figure out a way to safely iterate the slaves | |
4206 | * list, but without holding a lock around the actual | |
4207 | * call to the base driver. | |
4208 | */ | |
4209 | ||
4210 | bond_for_each_slave(bond, slave, i) { | |
eb7cc59a | 4211 | const struct net_device_ops *slave_ops = slave->dev->netdev_ops; |
5a03cdb7 | 4212 | pr_debug("slave %p %s\n", slave, slave->dev->name); |
1da177e4 | 4213 | |
eb7cc59a | 4214 | if (slave_ops->ndo_set_mac_address == NULL) { |
1da177e4 | 4215 | res = -EOPNOTSUPP; |
5a03cdb7 | 4216 | pr_debug("EOPNOTSUPP %s\n", slave->dev->name); |
1da177e4 LT |
4217 | goto unwind; |
4218 | } | |
4219 | ||
4220 | res = dev_set_mac_address(slave->dev, addr); | |
4221 | if (res) { | |
4222 | /* TODO: consider downing the slave | |
4223 | * and retry ? | |
4224 | * User should expect communications | |
4225 | * breakage anyway until ARP finish | |
4226 | * updating, so... | |
4227 | */ | |
5a03cdb7 | 4228 | pr_debug("err %d %s\n", res, slave->dev->name); |
1da177e4 LT |
4229 | goto unwind; |
4230 | } | |
4231 | } | |
4232 | ||
4233 | /* success */ | |
4234 | memcpy(bond_dev->dev_addr, sa->sa_data, bond_dev->addr_len); | |
4235 | return 0; | |
4236 | ||
4237 | unwind: | |
4238 | memcpy(tmp_sa.sa_data, bond_dev->dev_addr, bond_dev->addr_len); | |
4239 | tmp_sa.sa_family = bond_dev->type; | |
4240 | ||
4241 | /* unwind from head to the slave that failed */ | |
4242 | stop_at = slave; | |
4243 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { | |
4244 | int tmp_res; | |
4245 | ||
4246 | tmp_res = dev_set_mac_address(slave->dev, &tmp_sa); | |
4247 | if (tmp_res) { | |
5a03cdb7 | 4248 | pr_debug("unwind err %d dev %s\n", tmp_res, |
1da177e4 LT |
4249 | slave->dev->name); |
4250 | } | |
4251 | } | |
4252 | ||
4253 | return res; | |
4254 | } | |
4255 | ||
4256 | static int bond_xmit_roundrobin(struct sk_buff *skb, struct net_device *bond_dev) | |
4257 | { | |
454d7c9b | 4258 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 4259 | struct slave *slave, *start_at; |
cf5f9044 | 4260 | int i, slave_no, res = 1; |
1da177e4 LT |
4261 | |
4262 | read_lock(&bond->lock); | |
4263 | ||
3d632c3f | 4264 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4265 | goto out; |
1da177e4 | 4266 | |
cf5f9044 JV |
4267 | /* |
4268 | * Concurrent TX may collide on rr_tx_counter; we accept that | |
4269 | * as being rare enough not to justify using an atomic op here | |
4270 | */ | |
4271 | slave_no = bond->rr_tx_counter++ % bond->slave_cnt; | |
1da177e4 | 4272 | |
cf5f9044 JV |
4273 | bond_for_each_slave(bond, slave, i) { |
4274 | slave_no--; | |
3d632c3f | 4275 | if (slave_no < 0) |
cf5f9044 | 4276 | break; |
1da177e4 LT |
4277 | } |
4278 | ||
cf5f9044 | 4279 | start_at = slave; |
1da177e4 LT |
4280 | bond_for_each_slave_from(bond, slave, i, start_at) { |
4281 | if (IS_UP(slave->dev) && | |
4282 | (slave->link == BOND_LINK_UP) && | |
4283 | (slave->state == BOND_STATE_ACTIVE)) { | |
4284 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
1da177e4 LT |
4285 | break; |
4286 | } | |
4287 | } | |
4288 | ||
1da177e4 LT |
4289 | out: |
4290 | if (res) { | |
4291 | /* no suitable interface, frame not sent */ | |
4292 | dev_kfree_skb(skb); | |
4293 | } | |
4294 | read_unlock(&bond->lock); | |
ec634fe3 | 4295 | return NETDEV_TX_OK; |
1da177e4 LT |
4296 | } |
4297 | ||
075897ce | 4298 | |
1da177e4 LT |
4299 | /* |
4300 | * in active-backup mode, we know that bond->curr_active_slave is always valid if | |
4301 | * the bond has a usable interface. | |
4302 | */ | |
4303 | static int bond_xmit_activebackup(struct sk_buff *skb, struct net_device *bond_dev) | |
4304 | { | |
454d7c9b | 4305 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4306 | int res = 1; |
4307 | ||
1da177e4 LT |
4308 | read_lock(&bond->lock); |
4309 | read_lock(&bond->curr_slave_lock); | |
4310 | ||
3d632c3f | 4311 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4312 | goto out; |
1da177e4 | 4313 | |
075897ce JL |
4314 | if (!bond->curr_active_slave) |
4315 | goto out; | |
4316 | ||
075897ce JL |
4317 | res = bond_dev_queue_xmit(bond, skb, bond->curr_active_slave->dev); |
4318 | ||
1da177e4 | 4319 | out: |
3d632c3f | 4320 | if (res) |
1da177e4 LT |
4321 | /* no suitable interface, frame not sent */ |
4322 | dev_kfree_skb(skb); | |
3d632c3f | 4323 | |
1da177e4 LT |
4324 | read_unlock(&bond->curr_slave_lock); |
4325 | read_unlock(&bond->lock); | |
ec634fe3 | 4326 | return NETDEV_TX_OK; |
1da177e4 LT |
4327 | } |
4328 | ||
4329 | /* | |
169a3e66 JV |
4330 | * In bond_xmit_xor() , we determine the output device by using a pre- |
4331 | * determined xmit_hash_policy(), If the selected device is not enabled, | |
4332 | * find the next active slave. | |
1da177e4 LT |
4333 | */ |
4334 | static int bond_xmit_xor(struct sk_buff *skb, struct net_device *bond_dev) | |
4335 | { | |
454d7c9b | 4336 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4337 | struct slave *slave, *start_at; |
4338 | int slave_no; | |
4339 | int i; | |
4340 | int res = 1; | |
4341 | ||
4342 | read_lock(&bond->lock); | |
4343 | ||
3d632c3f | 4344 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4345 | goto out; |
1da177e4 | 4346 | |
169a3e66 | 4347 | slave_no = bond->xmit_hash_policy(skb, bond_dev, bond->slave_cnt); |
1da177e4 LT |
4348 | |
4349 | bond_for_each_slave(bond, slave, i) { | |
4350 | slave_no--; | |
3d632c3f | 4351 | if (slave_no < 0) |
1da177e4 | 4352 | break; |
1da177e4 LT |
4353 | } |
4354 | ||
4355 | start_at = slave; | |
4356 | ||
4357 | bond_for_each_slave_from(bond, slave, i, start_at) { | |
4358 | if (IS_UP(slave->dev) && | |
4359 | (slave->link == BOND_LINK_UP) && | |
4360 | (slave->state == BOND_STATE_ACTIVE)) { | |
4361 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
4362 | break; | |
4363 | } | |
4364 | } | |
4365 | ||
4366 | out: | |
4367 | if (res) { | |
4368 | /* no suitable interface, frame not sent */ | |
4369 | dev_kfree_skb(skb); | |
4370 | } | |
4371 | read_unlock(&bond->lock); | |
ec634fe3 | 4372 | return NETDEV_TX_OK; |
1da177e4 LT |
4373 | } |
4374 | ||
4375 | /* | |
4376 | * in broadcast mode, we send everything to all usable interfaces. | |
4377 | */ | |
4378 | static int bond_xmit_broadcast(struct sk_buff *skb, struct net_device *bond_dev) | |
4379 | { | |
454d7c9b | 4380 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4381 | struct slave *slave, *start_at; |
4382 | struct net_device *tx_dev = NULL; | |
4383 | int i; | |
4384 | int res = 1; | |
4385 | ||
4386 | read_lock(&bond->lock); | |
4387 | ||
3d632c3f | 4388 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4389 | goto out; |
1da177e4 LT |
4390 | |
4391 | read_lock(&bond->curr_slave_lock); | |
4392 | start_at = bond->curr_active_slave; | |
4393 | read_unlock(&bond->curr_slave_lock); | |
4394 | ||
3d632c3f | 4395 | if (!start_at) |
1da177e4 | 4396 | goto out; |
1da177e4 LT |
4397 | |
4398 | bond_for_each_slave_from(bond, slave, i, start_at) { | |
4399 | if (IS_UP(slave->dev) && | |
4400 | (slave->link == BOND_LINK_UP) && | |
4401 | (slave->state == BOND_STATE_ACTIVE)) { | |
4402 | if (tx_dev) { | |
4403 | struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC); | |
4404 | if (!skb2) { | |
3d632c3f | 4405 | pr_err(DRV_NAME |
4e0952c7 MW |
4406 | ": %s: Error: bond_xmit_broadcast(): " |
4407 | "skb_clone() failed\n", | |
4408 | bond_dev->name); | |
1da177e4 LT |
4409 | continue; |
4410 | } | |
4411 | ||
4412 | res = bond_dev_queue_xmit(bond, skb2, tx_dev); | |
4413 | if (res) { | |
4414 | dev_kfree_skb(skb2); | |
4415 | continue; | |
4416 | } | |
4417 | } | |
4418 | tx_dev = slave->dev; | |
4419 | } | |
4420 | } | |
4421 | ||
3d632c3f | 4422 | if (tx_dev) |
1da177e4 | 4423 | res = bond_dev_queue_xmit(bond, skb, tx_dev); |
1da177e4 LT |
4424 | |
4425 | out: | |
3d632c3f | 4426 | if (res) |
1da177e4 LT |
4427 | /* no suitable interface, frame not sent */ |
4428 | dev_kfree_skb(skb); | |
3d632c3f | 4429 | |
1da177e4 LT |
4430 | /* frame sent to all suitable interfaces */ |
4431 | read_unlock(&bond->lock); | |
ec634fe3 | 4432 | return NETDEV_TX_OK; |
1da177e4 LT |
4433 | } |
4434 | ||
4435 | /*------------------------- Device initialization ---------------------------*/ | |
4436 | ||
6f6652be JV |
4437 | static void bond_set_xmit_hash_policy(struct bonding *bond) |
4438 | { | |
4439 | switch (bond->params.xmit_policy) { | |
4440 | case BOND_XMIT_POLICY_LAYER23: | |
4441 | bond->xmit_hash_policy = bond_xmit_hash_policy_l23; | |
4442 | break; | |
4443 | case BOND_XMIT_POLICY_LAYER34: | |
4444 | bond->xmit_hash_policy = bond_xmit_hash_policy_l34; | |
4445 | break; | |
4446 | case BOND_XMIT_POLICY_LAYER2: | |
4447 | default: | |
4448 | bond->xmit_hash_policy = bond_xmit_hash_policy_l2; | |
4449 | break; | |
4450 | } | |
4451 | } | |
4452 | ||
424efe9c | 4453 | static netdev_tx_t bond_start_xmit(struct sk_buff *skb, struct net_device *dev) |
00829823 SH |
4454 | { |
4455 | const struct bonding *bond = netdev_priv(dev); | |
4456 | ||
4457 | switch (bond->params.mode) { | |
4458 | case BOND_MODE_ROUNDROBIN: | |
4459 | return bond_xmit_roundrobin(skb, dev); | |
4460 | case BOND_MODE_ACTIVEBACKUP: | |
4461 | return bond_xmit_activebackup(skb, dev); | |
4462 | case BOND_MODE_XOR: | |
4463 | return bond_xmit_xor(skb, dev); | |
4464 | case BOND_MODE_BROADCAST: | |
4465 | return bond_xmit_broadcast(skb, dev); | |
4466 | case BOND_MODE_8023AD: | |
4467 | return bond_3ad_xmit_xor(skb, dev); | |
4468 | case BOND_MODE_ALB: | |
4469 | case BOND_MODE_TLB: | |
4470 | return bond_alb_xmit(skb, dev); | |
4471 | default: | |
4472 | /* Should never happen, mode already checked */ | |
3d632c3f | 4473 | pr_err(DRV_NAME ": %s: Error: Unknown bonding mode %d\n", |
00829823 SH |
4474 | dev->name, bond->params.mode); |
4475 | WARN_ON_ONCE(1); | |
4476 | dev_kfree_skb(skb); | |
4477 | return NETDEV_TX_OK; | |
4478 | } | |
4479 | } | |
4480 | ||
4481 | ||
1da177e4 LT |
4482 | /* |
4483 | * set bond mode specific net device operations | |
4484 | */ | |
a77b5325 | 4485 | void bond_set_mode_ops(struct bonding *bond, int mode) |
1da177e4 | 4486 | { |
169a3e66 JV |
4487 | struct net_device *bond_dev = bond->dev; |
4488 | ||
1da177e4 LT |
4489 | switch (mode) { |
4490 | case BOND_MODE_ROUNDROBIN: | |
1da177e4 LT |
4491 | break; |
4492 | case BOND_MODE_ACTIVEBACKUP: | |
1da177e4 LT |
4493 | break; |
4494 | case BOND_MODE_XOR: | |
6f6652be | 4495 | bond_set_xmit_hash_policy(bond); |
1da177e4 LT |
4496 | break; |
4497 | case BOND_MODE_BROADCAST: | |
1da177e4 LT |
4498 | break; |
4499 | case BOND_MODE_8023AD: | |
8f903c70 | 4500 | bond_set_master_3ad_flags(bond); |
6f6652be | 4501 | bond_set_xmit_hash_policy(bond); |
1da177e4 | 4502 | break; |
1da177e4 | 4503 | case BOND_MODE_ALB: |
8f903c70 JV |
4504 | bond_set_master_alb_flags(bond); |
4505 | /* FALLTHRU */ | |
4506 | case BOND_MODE_TLB: | |
1da177e4 LT |
4507 | break; |
4508 | default: | |
4509 | /* Should never happen, mode already checked */ | |
3d632c3f | 4510 | pr_err(DRV_NAME |
4e0952c7 MW |
4511 | ": %s: Error: Unknown bonding mode %d\n", |
4512 | bond_dev->name, | |
1da177e4 LT |
4513 | mode); |
4514 | break; | |
4515 | } | |
4516 | } | |
4517 | ||
217df670 JV |
4518 | static void bond_ethtool_get_drvinfo(struct net_device *bond_dev, |
4519 | struct ethtool_drvinfo *drvinfo) | |
4520 | { | |
4521 | strncpy(drvinfo->driver, DRV_NAME, 32); | |
4522 | strncpy(drvinfo->version, DRV_VERSION, 32); | |
4523 | snprintf(drvinfo->fw_version, 32, "%d", BOND_ABI_VERSION); | |
4524 | } | |
4525 | ||
7282d491 | 4526 | static const struct ethtool_ops bond_ethtool_ops = { |
217df670 | 4527 | .get_drvinfo = bond_ethtool_get_drvinfo, |
fa53ebac SH |
4528 | .get_link = ethtool_op_get_link, |
4529 | .get_tx_csum = ethtool_op_get_tx_csum, | |
4530 | .get_sg = ethtool_op_get_sg, | |
4531 | .get_tso = ethtool_op_get_tso, | |
4532 | .get_ufo = ethtool_op_get_ufo, | |
4533 | .get_flags = ethtool_op_get_flags, | |
8531c5ff AK |
4534 | }; |
4535 | ||
eb7cc59a | 4536 | static const struct net_device_ops bond_netdev_ops = { |
181470fc | 4537 | .ndo_init = bond_init, |
9e71626c | 4538 | .ndo_uninit = bond_uninit, |
eb7cc59a SH |
4539 | .ndo_open = bond_open, |
4540 | .ndo_stop = bond_close, | |
00829823 | 4541 | .ndo_start_xmit = bond_start_xmit, |
eb7cc59a SH |
4542 | .ndo_get_stats = bond_get_stats, |
4543 | .ndo_do_ioctl = bond_do_ioctl, | |
4544 | .ndo_set_multicast_list = bond_set_multicast_list, | |
4545 | .ndo_change_mtu = bond_change_mtu, | |
eb7cc59a | 4546 | .ndo_set_mac_address = bond_set_mac_address, |
00829823 | 4547 | .ndo_neigh_setup = bond_neigh_setup, |
eb7cc59a SH |
4548 | .ndo_vlan_rx_register = bond_vlan_rx_register, |
4549 | .ndo_vlan_rx_add_vid = bond_vlan_rx_add_vid, | |
4550 | .ndo_vlan_rx_kill_vid = bond_vlan_rx_kill_vid, | |
4551 | }; | |
4552 | ||
181470fc | 4553 | static void bond_setup(struct net_device *bond_dev) |
1da177e4 | 4554 | { |
454d7c9b | 4555 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 4556 | |
1da177e4 LT |
4557 | /* initialize rwlocks */ |
4558 | rwlock_init(&bond->lock); | |
4559 | rwlock_init(&bond->curr_slave_lock); | |
4560 | ||
d2991f75 | 4561 | bond->params = bonding_defaults; |
1da177e4 LT |
4562 | |
4563 | /* Initialize pointers */ | |
1da177e4 LT |
4564 | bond->dev = bond_dev; |
4565 | INIT_LIST_HEAD(&bond->vlan_list); | |
4566 | ||
4567 | /* Initialize the device entry points */ | |
181470fc | 4568 | ether_setup(bond_dev); |
eb7cc59a | 4569 | bond_dev->netdev_ops = &bond_netdev_ops; |
8531c5ff | 4570 | bond_dev->ethtool_ops = &bond_ethtool_ops; |
169a3e66 | 4571 | bond_set_mode_ops(bond, bond->params.mode); |
1da177e4 | 4572 | |
9e71626c | 4573 | bond_dev->destructor = free_netdev; |
1da177e4 LT |
4574 | |
4575 | /* Initialize the device options */ | |
4576 | bond_dev->tx_queue_len = 0; | |
4577 | bond_dev->flags |= IFF_MASTER|IFF_MULTICAST; | |
0b680e75 | 4578 | bond_dev->priv_flags |= IFF_BONDING; |
181470fc SH |
4579 | bond_dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; |
4580 | ||
6cf3f41e JV |
4581 | if (bond->params.arp_interval) |
4582 | bond_dev->priv_flags |= IFF_MASTER_ARPMON; | |
1da177e4 LT |
4583 | |
4584 | /* At first, we block adding VLANs. That's the only way to | |
4585 | * prevent problems that occur when adding VLANs over an | |
4586 | * empty bond. The block will be removed once non-challenged | |
4587 | * slaves are enslaved. | |
4588 | */ | |
4589 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; | |
4590 | ||
932ff279 | 4591 | /* don't acquire bond device's netif_tx_lock when |
1da177e4 LT |
4592 | * transmitting */ |
4593 | bond_dev->features |= NETIF_F_LLTX; | |
4594 | ||
4595 | /* By default, we declare the bond to be fully | |
4596 | * VLAN hardware accelerated capable. Special | |
4597 | * care is taken in the various xmit functions | |
4598 | * when there are slaves that are not hw accel | |
4599 | * capable | |
4600 | */ | |
1da177e4 LT |
4601 | bond_dev->features |= (NETIF_F_HW_VLAN_TX | |
4602 | NETIF_F_HW_VLAN_RX | | |
4603 | NETIF_F_HW_VLAN_FILTER); | |
4604 | ||
1da177e4 LT |
4605 | } |
4606 | ||
fdaea7a9 JV |
4607 | static void bond_work_cancel_all(struct bonding *bond) |
4608 | { | |
4609 | write_lock_bh(&bond->lock); | |
4610 | bond->kill_timers = 1; | |
4611 | write_unlock_bh(&bond->lock); | |
4612 | ||
4613 | if (bond->params.miimon && delayed_work_pending(&bond->mii_work)) | |
4614 | cancel_delayed_work(&bond->mii_work); | |
4615 | ||
4616 | if (bond->params.arp_interval && delayed_work_pending(&bond->arp_work)) | |
4617 | cancel_delayed_work(&bond->arp_work); | |
4618 | ||
4619 | if (bond->params.mode == BOND_MODE_ALB && | |
4620 | delayed_work_pending(&bond->alb_work)) | |
4621 | cancel_delayed_work(&bond->alb_work); | |
4622 | ||
4623 | if (bond->params.mode == BOND_MODE_8023AD && | |
4624 | delayed_work_pending(&bond->ad_work)) | |
4625 | cancel_delayed_work(&bond->ad_work); | |
4626 | } | |
4627 | ||
a434e43f JV |
4628 | /* De-initialize device specific data. |
4629 | * Caller must hold rtnl_lock. | |
4630 | */ | |
4631 | static void bond_deinit(struct net_device *bond_dev) | |
4632 | { | |
454d7c9b | 4633 | struct bonding *bond = netdev_priv(bond_dev); |
a434e43f JV |
4634 | |
4635 | list_del(&bond->bond_list); | |
4636 | ||
4637 | bond_work_cancel_all(bond); | |
4638 | ||
a434e43f | 4639 | bond_remove_proc_entry(bond); |
a434e43f JV |
4640 | } |
4641 | ||
1da177e4 LT |
4642 | /* Unregister and free all bond devices. |
4643 | * Caller must hold rtnl_lock. | |
4644 | */ | |
4645 | static void bond_free_all(void) | |
4646 | { | |
4647 | struct bonding *bond, *nxt; | |
4648 | ||
4649 | list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) { | |
4650 | struct net_device *bond_dev = bond->dev; | |
4651 | ||
fdaea7a9 | 4652 | bond_work_cancel_all(bond); |
70298705 | 4653 | /* Release the bonded slaves */ |
4654 | bond_release_all(bond_dev); | |
9e71626c | 4655 | unregister_netdevice(bond_dev); |
1da177e4 LT |
4656 | } |
4657 | ||
1da177e4 | 4658 | bond_destroy_proc_dir(); |
1da177e4 LT |
4659 | } |
4660 | ||
4661 | /*------------------------- Module initialization ---------------------------*/ | |
4662 | ||
4663 | /* | |
4664 | * Convert string input module parms. Accept either the | |
ece95f7f JV |
4665 | * number of the mode or its string name. A bit complicated because |
4666 | * some mode names are substrings of other names, and calls from sysfs | |
4667 | * may have whitespace in the name (trailing newlines, for example). | |
1da177e4 | 4668 | */ |
325dcf7a | 4669 | int bond_parse_parm(const char *buf, const struct bond_parm_tbl *tbl) |
1da177e4 | 4670 | { |
54b87323 | 4671 | int modeint = -1, i, rv; |
a42e534f | 4672 | char *p, modestr[BOND_MAX_MODENAME_LEN + 1] = { 0, }; |
ece95f7f | 4673 | |
a42e534f JV |
4674 | for (p = (char *)buf; *p; p++) |
4675 | if (!(isdigit(*p) || isspace(*p))) | |
4676 | break; | |
4677 | ||
4678 | if (*p) | |
ece95f7f | 4679 | rv = sscanf(buf, "%20s", modestr); |
a42e534f | 4680 | else |
54b87323 | 4681 | rv = sscanf(buf, "%d", &modeint); |
a42e534f JV |
4682 | |
4683 | if (!rv) | |
4684 | return -1; | |
1da177e4 LT |
4685 | |
4686 | for (i = 0; tbl[i].modename; i++) { | |
54b87323 | 4687 | if (modeint == tbl[i].mode) |
ece95f7f JV |
4688 | return tbl[i].mode; |
4689 | if (strcmp(modestr, tbl[i].modename) == 0) | |
1da177e4 | 4690 | return tbl[i].mode; |
1da177e4 LT |
4691 | } |
4692 | ||
4693 | return -1; | |
4694 | } | |
4695 | ||
4696 | static int bond_check_params(struct bond_params *params) | |
4697 | { | |
3915c1e8 | 4698 | int arp_validate_value, fail_over_mac_value; |
f5b2b966 | 4699 | |
1da177e4 LT |
4700 | /* |
4701 | * Convert string parameters. | |
4702 | */ | |
4703 | if (mode) { | |
4704 | bond_mode = bond_parse_parm(mode, bond_mode_tbl); | |
4705 | if (bond_mode == -1) { | |
3d632c3f | 4706 | pr_err(DRV_NAME |
1da177e4 LT |
4707 | ": Error: Invalid bonding mode \"%s\"\n", |
4708 | mode == NULL ? "NULL" : mode); | |
4709 | return -EINVAL; | |
4710 | } | |
4711 | } | |
4712 | ||
169a3e66 JV |
4713 | if (xmit_hash_policy) { |
4714 | if ((bond_mode != BOND_MODE_XOR) && | |
4715 | (bond_mode != BOND_MODE_8023AD)) { | |
3d632c3f | 4716 | pr_info(DRV_NAME |
169a3e66 JV |
4717 | ": xor_mode param is irrelevant in mode %s\n", |
4718 | bond_mode_name(bond_mode)); | |
4719 | } else { | |
4720 | xmit_hashtype = bond_parse_parm(xmit_hash_policy, | |
4721 | xmit_hashtype_tbl); | |
4722 | if (xmit_hashtype == -1) { | |
3d632c3f SH |
4723 | pr_err(DRV_NAME |
4724 | ": Error: Invalid xmit_hash_policy \"%s\"\n", | |
4725 | xmit_hash_policy == NULL ? "NULL" : | |
169a3e66 JV |
4726 | xmit_hash_policy); |
4727 | return -EINVAL; | |
4728 | } | |
4729 | } | |
4730 | } | |
4731 | ||
1da177e4 LT |
4732 | if (lacp_rate) { |
4733 | if (bond_mode != BOND_MODE_8023AD) { | |
3d632c3f | 4734 | pr_info(DRV_NAME |
1da177e4 LT |
4735 | ": lacp_rate param is irrelevant in mode %s\n", |
4736 | bond_mode_name(bond_mode)); | |
4737 | } else { | |
4738 | lacp_fast = bond_parse_parm(lacp_rate, bond_lacp_tbl); | |
4739 | if (lacp_fast == -1) { | |
3d632c3f | 4740 | pr_err(DRV_NAME |
1da177e4 LT |
4741 | ": Error: Invalid lacp rate \"%s\"\n", |
4742 | lacp_rate == NULL ? "NULL" : lacp_rate); | |
4743 | return -EINVAL; | |
4744 | } | |
4745 | } | |
4746 | } | |
4747 | ||
fd989c83 JV |
4748 | if (ad_select) { |
4749 | params->ad_select = bond_parse_parm(ad_select, ad_select_tbl); | |
4750 | if (params->ad_select == -1) { | |
3d632c3f | 4751 | pr_err(DRV_NAME |
fd989c83 JV |
4752 | ": Error: Invalid ad_select \"%s\"\n", |
4753 | ad_select == NULL ? "NULL" : ad_select); | |
4754 | return -EINVAL; | |
4755 | } | |
4756 | ||
4757 | if (bond_mode != BOND_MODE_8023AD) { | |
3d632c3f | 4758 | pr_warning(DRV_NAME |
fd989c83 JV |
4759 | ": ad_select param only affects 802.3ad mode\n"); |
4760 | } | |
4761 | } else { | |
4762 | params->ad_select = BOND_AD_STABLE; | |
4763 | } | |
4764 | ||
f5841306 | 4765 | if (max_bonds < 0) { |
3d632c3f | 4766 | pr_warning(DRV_NAME |
1da177e4 | 4767 | ": Warning: max_bonds (%d) not in range %d-%d, so it " |
4e0952c7 | 4768 | "was reset to BOND_DEFAULT_MAX_BONDS (%d)\n", |
b8a9787e | 4769 | max_bonds, 0, INT_MAX, BOND_DEFAULT_MAX_BONDS); |
1da177e4 LT |
4770 | max_bonds = BOND_DEFAULT_MAX_BONDS; |
4771 | } | |
4772 | ||
4773 | if (miimon < 0) { | |
3d632c3f | 4774 | pr_warning(DRV_NAME |
1da177e4 LT |
4775 | ": Warning: miimon module parameter (%d), " |
4776 | "not in range 0-%d, so it was reset to %d\n", | |
4777 | miimon, INT_MAX, BOND_LINK_MON_INTERV); | |
4778 | miimon = BOND_LINK_MON_INTERV; | |
4779 | } | |
4780 | ||
4781 | if (updelay < 0) { | |
3d632c3f | 4782 | pr_warning(DRV_NAME |
1da177e4 LT |
4783 | ": Warning: updelay module parameter (%d), " |
4784 | "not in range 0-%d, so it was reset to 0\n", | |
4785 | updelay, INT_MAX); | |
4786 | updelay = 0; | |
4787 | } | |
4788 | ||
4789 | if (downdelay < 0) { | |
3d632c3f | 4790 | pr_warning(DRV_NAME |
1da177e4 LT |
4791 | ": Warning: downdelay module parameter (%d), " |
4792 | "not in range 0-%d, so it was reset to 0\n", | |
4793 | downdelay, INT_MAX); | |
4794 | downdelay = 0; | |
4795 | } | |
4796 | ||
4797 | if ((use_carrier != 0) && (use_carrier != 1)) { | |
3d632c3f | 4798 | pr_warning(DRV_NAME |
1da177e4 LT |
4799 | ": Warning: use_carrier module parameter (%d), " |
4800 | "not of valid value (0/1), so it was set to 1\n", | |
4801 | use_carrier); | |
4802 | use_carrier = 1; | |
4803 | } | |
4804 | ||
7893b249 | 4805 | if (num_grat_arp < 0 || num_grat_arp > 255) { |
3d632c3f | 4806 | pr_warning(DRV_NAME |
7893b249 MS |
4807 | ": Warning: num_grat_arp (%d) not in range 0-255 so it " |
4808 | "was reset to 1 \n", num_grat_arp); | |
4809 | num_grat_arp = 1; | |
4810 | } | |
4811 | ||
305d552a | 4812 | if (num_unsol_na < 0 || num_unsol_na > 255) { |
3d632c3f | 4813 | pr_warning(DRV_NAME |
305d552a BH |
4814 | ": Warning: num_unsol_na (%d) not in range 0-255 so it " |
4815 | "was reset to 1 \n", num_unsol_na); | |
4816 | num_unsol_na = 1; | |
4817 | } | |
4818 | ||
1da177e4 LT |
4819 | /* reset values for 802.3ad */ |
4820 | if (bond_mode == BOND_MODE_8023AD) { | |
4821 | if (!miimon) { | |
3d632c3f | 4822 | pr_warning(DRV_NAME |
1da177e4 LT |
4823 | ": Warning: miimon must be specified, " |
4824 | "otherwise bonding will not detect link " | |
4825 | "failure, speed and duplex which are " | |
4826 | "essential for 802.3ad operation\n"); | |
3d632c3f | 4827 | pr_warning("Forcing miimon to 100msec\n"); |
1da177e4 LT |
4828 | miimon = 100; |
4829 | } | |
4830 | } | |
4831 | ||
4832 | /* reset values for TLB/ALB */ | |
4833 | if ((bond_mode == BOND_MODE_TLB) || | |
4834 | (bond_mode == BOND_MODE_ALB)) { | |
4835 | if (!miimon) { | |
3d632c3f | 4836 | pr_warning(DRV_NAME |
1da177e4 LT |
4837 | ": Warning: miimon must be specified, " |
4838 | "otherwise bonding will not detect link " | |
4839 | "failure and link speed which are essential " | |
4840 | "for TLB/ALB load balancing\n"); | |
3d632c3f | 4841 | pr_warning("Forcing miimon to 100msec\n"); |
1da177e4 LT |
4842 | miimon = 100; |
4843 | } | |
4844 | } | |
4845 | ||
4846 | if (bond_mode == BOND_MODE_ALB) { | |
e5e2a8fd | 4847 | pr_notice(DRV_NAME |
1da177e4 LT |
4848 | ": In ALB mode you might experience client " |
4849 | "disconnections upon reconnection of a link if the " | |
4850 | "bonding module updelay parameter (%d msec) is " | |
4851 | "incompatible with the forwarding delay time of the " | |
4852 | "switch\n", | |
4853 | updelay); | |
4854 | } | |
4855 | ||
4856 | if (!miimon) { | |
4857 | if (updelay || downdelay) { | |
4858 | /* just warn the user the up/down delay will have | |
4859 | * no effect since miimon is zero... | |
4860 | */ | |
3d632c3f | 4861 | pr_warning(DRV_NAME |
1da177e4 LT |
4862 | ": Warning: miimon module parameter not set " |
4863 | "and updelay (%d) or downdelay (%d) module " | |
4864 | "parameter is set; updelay and downdelay have " | |
4865 | "no effect unless miimon is set\n", | |
4866 | updelay, downdelay); | |
4867 | } | |
4868 | } else { | |
4869 | /* don't allow arp monitoring */ | |
4870 | if (arp_interval) { | |
3d632c3f | 4871 | pr_warning(DRV_NAME |
1da177e4 LT |
4872 | ": Warning: miimon (%d) and arp_interval (%d) " |
4873 | "can't be used simultaneously, disabling ARP " | |
4874 | "monitoring\n", | |
4875 | miimon, arp_interval); | |
4876 | arp_interval = 0; | |
4877 | } | |
4878 | ||
4879 | if ((updelay % miimon) != 0) { | |
3d632c3f | 4880 | pr_warning(DRV_NAME |
1da177e4 LT |
4881 | ": Warning: updelay (%d) is not a multiple " |
4882 | "of miimon (%d), updelay rounded to %d ms\n", | |
4883 | updelay, miimon, (updelay / miimon) * miimon); | |
4884 | } | |
4885 | ||
4886 | updelay /= miimon; | |
4887 | ||
4888 | if ((downdelay % miimon) != 0) { | |
3d632c3f | 4889 | pr_warning(DRV_NAME |
1da177e4 LT |
4890 | ": Warning: downdelay (%d) is not a multiple " |
4891 | "of miimon (%d), downdelay rounded to %d ms\n", | |
4892 | downdelay, miimon, | |
4893 | (downdelay / miimon) * miimon); | |
4894 | } | |
4895 | ||
4896 | downdelay /= miimon; | |
4897 | } | |
4898 | ||
4899 | if (arp_interval < 0) { | |
3d632c3f | 4900 | pr_warning(DRV_NAME |
1da177e4 LT |
4901 | ": Warning: arp_interval module parameter (%d) " |
4902 | ", not in range 0-%d, so it was reset to %d\n", | |
4903 | arp_interval, INT_MAX, BOND_LINK_ARP_INTERV); | |
4904 | arp_interval = BOND_LINK_ARP_INTERV; | |
4905 | } | |
4906 | ||
4907 | for (arp_ip_count = 0; | |
4908 | (arp_ip_count < BOND_MAX_ARP_TARGETS) && arp_ip_target[arp_ip_count]; | |
4909 | arp_ip_count++) { | |
4910 | /* not complete check, but should be good enough to | |
4911 | catch mistakes */ | |
4912 | if (!isdigit(arp_ip_target[arp_ip_count][0])) { | |
3d632c3f | 4913 | pr_warning(DRV_NAME |
1da177e4 LT |
4914 | ": Warning: bad arp_ip_target module parameter " |
4915 | "(%s), ARP monitoring will not be performed\n", | |
4916 | arp_ip_target[arp_ip_count]); | |
4917 | arp_interval = 0; | |
4918 | } else { | |
d3bb52b0 | 4919 | __be32 ip = in_aton(arp_ip_target[arp_ip_count]); |
1da177e4 LT |
4920 | arp_target[arp_ip_count] = ip; |
4921 | } | |
4922 | } | |
4923 | ||
4924 | if (arp_interval && !arp_ip_count) { | |
4925 | /* don't allow arping if no arp_ip_target given... */ | |
3d632c3f | 4926 | pr_warning(DRV_NAME |
1da177e4 LT |
4927 | ": Warning: arp_interval module parameter (%d) " |
4928 | "specified without providing an arp_ip_target " | |
4929 | "parameter, arp_interval was reset to 0\n", | |
4930 | arp_interval); | |
4931 | arp_interval = 0; | |
4932 | } | |
4933 | ||
f5b2b966 JV |
4934 | if (arp_validate) { |
4935 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) { | |
3d632c3f SH |
4936 | pr_err(DRV_NAME |
4937 | ": arp_validate only supported in active-backup mode\n"); | |
f5b2b966 JV |
4938 | return -EINVAL; |
4939 | } | |
4940 | if (!arp_interval) { | |
3d632c3f | 4941 | pr_err(DRV_NAME |
f5b2b966 JV |
4942 | ": arp_validate requires arp_interval\n"); |
4943 | return -EINVAL; | |
4944 | } | |
4945 | ||
4946 | arp_validate_value = bond_parse_parm(arp_validate, | |
4947 | arp_validate_tbl); | |
4948 | if (arp_validate_value == -1) { | |
3d632c3f | 4949 | pr_err(DRV_NAME |
f5b2b966 JV |
4950 | ": Error: invalid arp_validate \"%s\"\n", |
4951 | arp_validate == NULL ? "NULL" : arp_validate); | |
4952 | return -EINVAL; | |
4953 | } | |
4954 | } else | |
4955 | arp_validate_value = 0; | |
4956 | ||
1da177e4 | 4957 | if (miimon) { |
3d632c3f | 4958 | pr_info(DRV_NAME |
1da177e4 LT |
4959 | ": MII link monitoring set to %d ms\n", |
4960 | miimon); | |
4961 | } else if (arp_interval) { | |
4962 | int i; | |
4963 | ||
3d632c3f SH |
4964 | pr_info(DRV_NAME ": ARP monitoring set to %d ms," |
4965 | " validate %s, with %d target(s):", | |
f5b2b966 JV |
4966 | arp_interval, |
4967 | arp_validate_tbl[arp_validate_value].modename, | |
4968 | arp_ip_count); | |
1da177e4 LT |
4969 | |
4970 | for (i = 0; i < arp_ip_count; i++) | |
e5e2a8fd | 4971 | pr_info(" %s", arp_ip_target[i]); |
1da177e4 | 4972 | |
e5e2a8fd | 4973 | pr_info("\n"); |
1da177e4 | 4974 | |
b8a9787e | 4975 | } else if (max_bonds) { |
1da177e4 LT |
4976 | /* miimon and arp_interval not set, we need one so things |
4977 | * work as expected, see bonding.txt for details | |
4978 | */ | |
3d632c3f | 4979 | pr_warning(DRV_NAME |
1da177e4 LT |
4980 | ": Warning: either miimon or arp_interval and " |
4981 | "arp_ip_target module parameters must be specified, " | |
4982 | "otherwise bonding will not detect link failures! see " | |
4983 | "bonding.txt for details.\n"); | |
4984 | } | |
4985 | ||
4986 | if (primary && !USES_PRIMARY(bond_mode)) { | |
4987 | /* currently, using a primary only makes sense | |
4988 | * in active backup, TLB or ALB modes | |
4989 | */ | |
3d632c3f | 4990 | pr_warning(DRV_NAME |
1da177e4 LT |
4991 | ": Warning: %s primary device specified but has no " |
4992 | "effect in %s mode\n", | |
4993 | primary, bond_mode_name(bond_mode)); | |
4994 | primary = NULL; | |
4995 | } | |
4996 | ||
3915c1e8 JV |
4997 | if (fail_over_mac) { |
4998 | fail_over_mac_value = bond_parse_parm(fail_over_mac, | |
4999 | fail_over_mac_tbl); | |
5000 | if (fail_over_mac_value == -1) { | |
3d632c3f | 5001 | pr_err(DRV_NAME |
3915c1e8 JV |
5002 | ": Error: invalid fail_over_mac \"%s\"\n", |
5003 | arp_validate == NULL ? "NULL" : arp_validate); | |
5004 | return -EINVAL; | |
5005 | } | |
5006 | ||
5007 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) | |
3d632c3f | 5008 | pr_warning(DRV_NAME |
3915c1e8 JV |
5009 | ": Warning: fail_over_mac only affects " |
5010 | "active-backup mode.\n"); | |
5011 | } else { | |
5012 | fail_over_mac_value = BOND_FOM_NONE; | |
5013 | } | |
dd957c57 | 5014 | |
1da177e4 LT |
5015 | /* fill params struct with the proper values */ |
5016 | params->mode = bond_mode; | |
169a3e66 | 5017 | params->xmit_policy = xmit_hashtype; |
1da177e4 | 5018 | params->miimon = miimon; |
7893b249 | 5019 | params->num_grat_arp = num_grat_arp; |
305d552a | 5020 | params->num_unsol_na = num_unsol_na; |
1da177e4 | 5021 | params->arp_interval = arp_interval; |
f5b2b966 | 5022 | params->arp_validate = arp_validate_value; |
1da177e4 LT |
5023 | params->updelay = updelay; |
5024 | params->downdelay = downdelay; | |
5025 | params->use_carrier = use_carrier; | |
5026 | params->lacp_fast = lacp_fast; | |
5027 | params->primary[0] = 0; | |
3915c1e8 | 5028 | params->fail_over_mac = fail_over_mac_value; |
1da177e4 LT |
5029 | |
5030 | if (primary) { | |
5031 | strncpy(params->primary, primary, IFNAMSIZ); | |
5032 | params->primary[IFNAMSIZ - 1] = 0; | |
5033 | } | |
5034 | ||
5035 | memcpy(params->arp_targets, arp_target, sizeof(arp_target)); | |
5036 | ||
5037 | return 0; | |
5038 | } | |
5039 | ||
0daa2303 | 5040 | static struct lock_class_key bonding_netdev_xmit_lock_key; |
cf508b12 | 5041 | static struct lock_class_key bonding_netdev_addr_lock_key; |
0daa2303 | 5042 | |
e8a0464c DM |
5043 | static void bond_set_lockdep_class_one(struct net_device *dev, |
5044 | struct netdev_queue *txq, | |
5045 | void *_unused) | |
c773e847 DM |
5046 | { |
5047 | lockdep_set_class(&txq->_xmit_lock, | |
5048 | &bonding_netdev_xmit_lock_key); | |
5049 | } | |
5050 | ||
5051 | static void bond_set_lockdep_class(struct net_device *dev) | |
5052 | { | |
cf508b12 DM |
5053 | lockdep_set_class(&dev->addr_list_lock, |
5054 | &bonding_netdev_addr_lock_key); | |
e8a0464c | 5055 | netdev_for_each_tx_queue(dev, bond_set_lockdep_class_one, NULL); |
c773e847 DM |
5056 | } |
5057 | ||
181470fc SH |
5058 | /* |
5059 | * Called from registration process | |
5060 | */ | |
5061 | static int bond_init(struct net_device *bond_dev) | |
5062 | { | |
5063 | struct bonding *bond = netdev_priv(bond_dev); | |
5064 | ||
5065 | pr_debug("Begin bond_init for %s\n", bond_dev->name); | |
5066 | ||
5067 | bond->wq = create_singlethread_workqueue(bond_dev->name); | |
5068 | if (!bond->wq) | |
5069 | return -ENOMEM; | |
5070 | ||
5071 | bond_set_lockdep_class(bond_dev); | |
5072 | ||
5073 | netif_carrier_off(bond_dev); | |
5074 | ||
5075 | bond_create_proc_entry(bond); | |
5076 | list_add_tail(&bond->bond_list, &bond_dev_list); | |
5077 | ||
5078 | return 0; | |
5079 | } | |
5080 | ||
dfe60397 | 5081 | /* Create a new bond based on the specified name and bonding parameters. |
e4b91c48 | 5082 | * If name is NULL, obtain a suitable "bond%d" name for us. |
dfe60397 MW |
5083 | * Caller must NOT hold rtnl_lock; we need to release it here before we |
5084 | * set up our sysfs entries. | |
5085 | */ | |
d2991f75 | 5086 | int bond_create(const char *name) |
dfe60397 MW |
5087 | { |
5088 | struct net_device *bond_dev; | |
5089 | int res; | |
5090 | ||
5091 | rtnl_lock(); | |
027ea041 | 5092 | /* Check to see if the bond already exists. */ |
373500db SH |
5093 | /* FIXME: pass netns from caller */ |
5094 | if (name && __dev_get_by_name(&init_net, name)) { | |
5095 | pr_err(DRV_NAME ": cannot add bond %s; already exists\n", | |
5096 | name); | |
5097 | res = -EEXIST; | |
5098 | goto out_rtnl; | |
4fe4763c | 5099 | } |
027ea041 | 5100 | |
e4b91c48 | 5101 | bond_dev = alloc_netdev(sizeof(struct bonding), name ? name : "", |
181470fc | 5102 | bond_setup); |
dfe60397 | 5103 | if (!bond_dev) { |
3d632c3f | 5104 | pr_err(DRV_NAME ": %s: eek! can't alloc netdev!\n", |
dfe60397 MW |
5105 | name); |
5106 | res = -ENOMEM; | |
5107 | goto out_rtnl; | |
5108 | } | |
5109 | ||
e4b91c48 JV |
5110 | if (!name) { |
5111 | res = dev_alloc_name(bond_dev, "bond%d"); | |
5112 | if (res < 0) | |
5113 | goto out_netdev; | |
5114 | } | |
5115 | ||
dfe60397 | 5116 | res = register_netdevice(bond_dev); |
3d632c3f | 5117 | if (res < 0) |
dfe60397 | 5118 | goto out_bond; |
0daa2303 | 5119 | |
454d7c9b | 5120 | res = bond_create_sysfs_entry(netdev_priv(bond_dev)); |
1363d9b1 JP |
5121 | if (res < 0) |
5122 | goto out_unreg; | |
09c89279 | 5123 | |
7e083840 | 5124 | rtnl_unlock(); |
09c89279 JV |
5125 | return 0; |
5126 | ||
1363d9b1 | 5127 | out_unreg: |
1363d9b1 | 5128 | unregister_netdevice(bond_dev); |
dfe60397 MW |
5129 | out_bond: |
5130 | bond_deinit(bond_dev); | |
5131 | out_netdev: | |
5132 | free_netdev(bond_dev); | |
5133 | out_rtnl: | |
5134 | rtnl_unlock(); | |
dfe60397 MW |
5135 | return res; |
5136 | } | |
5137 | ||
1da177e4 LT |
5138 | static int __init bonding_init(void) |
5139 | { | |
1da177e4 LT |
5140 | int i; |
5141 | int res; | |
5142 | ||
3d632c3f | 5143 | pr_info("%s", version); |
1da177e4 | 5144 | |
dfe60397 | 5145 | res = bond_check_params(&bonding_defaults); |
3d632c3f | 5146 | if (res) |
dfe60397 | 5147 | goto out; |
1da177e4 | 5148 | |
1da177e4 | 5149 | bond_create_proc_dir(); |
027ea041 | 5150 | |
1da177e4 | 5151 | for (i = 0; i < max_bonds; i++) { |
d2991f75 | 5152 | res = bond_create(NULL); |
dfe60397 MW |
5153 | if (res) |
5154 | goto err; | |
1da177e4 LT |
5155 | } |
5156 | ||
b76cdba9 MW |
5157 | res = bond_create_sysfs(); |
5158 | if (res) | |
5159 | goto err; | |
5160 | ||
1da177e4 | 5161 | register_netdevice_notifier(&bond_netdev_notifier); |
c3ade5ca | 5162 | register_inetaddr_notifier(&bond_inetaddr_notifier); |
305d552a | 5163 | bond_register_ipv6_notifier(); |
1da177e4 | 5164 | |
dfe60397 MW |
5165 | goto out; |
5166 | err: | |
40abc270 | 5167 | rtnl_lock(); |
1da177e4 | 5168 | bond_free_all(); |
1da177e4 | 5169 | rtnl_unlock(); |
dfe60397 | 5170 | out: |
1da177e4 | 5171 | return res; |
dfe60397 | 5172 | |
1da177e4 LT |
5173 | } |
5174 | ||
5175 | static void __exit bonding_exit(void) | |
5176 | { | |
5177 | unregister_netdevice_notifier(&bond_netdev_notifier); | |
c3ade5ca | 5178 | unregister_inetaddr_notifier(&bond_inetaddr_notifier); |
305d552a | 5179 | bond_unregister_ipv6_notifier(); |
1da177e4 | 5180 | |
ae68c398 PE |
5181 | bond_destroy_sysfs(); |
5182 | ||
1da177e4 LT |
5183 | rtnl_lock(); |
5184 | bond_free_all(); | |
5185 | rtnl_unlock(); | |
5186 | } | |
5187 | ||
5188 | module_init(bonding_init); | |
5189 | module_exit(bonding_exit); | |
5190 | MODULE_LICENSE("GPL"); | |
5191 | MODULE_VERSION(DRV_VERSION); | |
5192 | MODULE_DESCRIPTION(DRV_DESCRIPTION ", v" DRV_VERSION); | |
5193 | MODULE_AUTHOR("Thomas Davis, tadavis@lbl.gov and many others"); |