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Commit | Line | Data |
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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 | ||
a4aee5c8 JP |
34 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
35 | ||
1da177e4 LT |
36 | #include <linux/kernel.h> |
37 | #include <linux/module.h> | |
1da177e4 LT |
38 | #include <linux/types.h> |
39 | #include <linux/fcntl.h> | |
40 | #include <linux/interrupt.h> | |
41 | #include <linux/ptrace.h> | |
42 | #include <linux/ioport.h> | |
43 | #include <linux/in.h> | |
169a3e66 | 44 | #include <net/ip.h> |
1da177e4 | 45 | #include <linux/ip.h> |
169a3e66 JV |
46 | #include <linux/tcp.h> |
47 | #include <linux/udp.h> | |
1da177e4 LT |
48 | #include <linux/slab.h> |
49 | #include <linux/string.h> | |
50 | #include <linux/init.h> | |
51 | #include <linux/timer.h> | |
52 | #include <linux/socket.h> | |
53 | #include <linux/ctype.h> | |
54 | #include <linux/inet.h> | |
55 | #include <linux/bitops.h> | |
3d632c3f | 56 | #include <linux/io.h> |
1da177e4 | 57 | #include <asm/system.h> |
1da177e4 | 58 | #include <asm/dma.h> |
3d632c3f | 59 | #include <linux/uaccess.h> |
1da177e4 LT |
60 | #include <linux/errno.h> |
61 | #include <linux/netdevice.h> | |
f6dc31a8 | 62 | #include <linux/netpoll.h> |
1da177e4 | 63 | #include <linux/inetdevice.h> |
a816c7c7 | 64 | #include <linux/igmp.h> |
1da177e4 LT |
65 | #include <linux/etherdevice.h> |
66 | #include <linux/skbuff.h> | |
67 | #include <net/sock.h> | |
68 | #include <linux/rtnetlink.h> | |
69 | #include <linux/proc_fs.h> | |
70 | #include <linux/seq_file.h> | |
71 | #include <linux/smp.h> | |
72 | #include <linux/if_ether.h> | |
73 | #include <net/arp.h> | |
74 | #include <linux/mii.h> | |
75 | #include <linux/ethtool.h> | |
76 | #include <linux/if_vlan.h> | |
77 | #include <linux/if_bonding.h> | |
b63bb739 | 78 | #include <linux/jiffies.h> |
e843fa50 | 79 | #include <linux/preempt.h> |
c3ade5ca | 80 | #include <net/route.h> |
457c4cbc | 81 | #include <net/net_namespace.h> |
ec87fd3b | 82 | #include <net/netns/generic.h> |
1da177e4 LT |
83 | #include "bonding.h" |
84 | #include "bond_3ad.h" | |
85 | #include "bond_alb.h" | |
86 | ||
87 | /*---------------------------- Module parameters ----------------------------*/ | |
88 | ||
89 | /* monitor all links that often (in milliseconds). <=0 disables monitoring */ | |
90 | #define BOND_LINK_MON_INTERV 0 | |
91 | #define BOND_LINK_ARP_INTERV 0 | |
92 | ||
93 | static int max_bonds = BOND_DEFAULT_MAX_BONDS; | |
bb1d9123 | 94 | static int tx_queues = BOND_DEFAULT_TX_QUEUES; |
7893b249 | 95 | static int num_grat_arp = 1; |
305d552a | 96 | static int num_unsol_na = 1; |
1da177e4 | 97 | static int miimon = BOND_LINK_MON_INTERV; |
3d632c3f SH |
98 | static int updelay; |
99 | static int downdelay; | |
1da177e4 | 100 | static int use_carrier = 1; |
3d632c3f SH |
101 | static char *mode; |
102 | static char *primary; | |
a549952a | 103 | static char *primary_reselect; |
3d632c3f SH |
104 | static char *lacp_rate; |
105 | static char *ad_select; | |
106 | static char *xmit_hash_policy; | |
1da177e4 | 107 | static int arp_interval = BOND_LINK_ARP_INTERV; |
3d632c3f SH |
108 | static char *arp_ip_target[BOND_MAX_ARP_TARGETS]; |
109 | static char *arp_validate; | |
110 | static char *fail_over_mac; | |
ebd8e497 | 111 | static int all_slaves_active = 0; |
d2991f75 | 112 | static struct bond_params bonding_defaults; |
c2952c31 | 113 | static int resend_igmp = BOND_DEFAULT_RESEND_IGMP; |
1da177e4 LT |
114 | |
115 | module_param(max_bonds, int, 0); | |
116 | MODULE_PARM_DESC(max_bonds, "Max number of bonded devices"); | |
bb1d9123 AG |
117 | module_param(tx_queues, int, 0); |
118 | MODULE_PARM_DESC(tx_queues, "Max number of transmit queues (default = 16)"); | |
7893b249 MS |
119 | module_param(num_grat_arp, int, 0644); |
120 | MODULE_PARM_DESC(num_grat_arp, "Number of gratuitous ARP packets to send on failover event"); | |
305d552a BH |
121 | module_param(num_unsol_na, int, 0644); |
122 | MODULE_PARM_DESC(num_unsol_na, "Number of unsolicited IPv6 Neighbor Advertisements packets to send on failover event"); | |
1da177e4 LT |
123 | module_param(miimon, int, 0); |
124 | MODULE_PARM_DESC(miimon, "Link check interval in milliseconds"); | |
125 | module_param(updelay, int, 0); | |
126 | MODULE_PARM_DESC(updelay, "Delay before considering link up, in milliseconds"); | |
127 | module_param(downdelay, int, 0); | |
2ac47660 MW |
128 | MODULE_PARM_DESC(downdelay, "Delay before considering link down, " |
129 | "in milliseconds"); | |
1da177e4 | 130 | module_param(use_carrier, int, 0); |
2ac47660 MW |
131 | MODULE_PARM_DESC(use_carrier, "Use netif_carrier_ok (vs MII ioctls) in miimon; " |
132 | "0 for off, 1 for on (default)"); | |
1da177e4 | 133 | module_param(mode, charp, 0); |
2ac47660 MW |
134 | MODULE_PARM_DESC(mode, "Mode of operation : 0 for balance-rr, " |
135 | "1 for active-backup, 2 for balance-xor, " | |
136 | "3 for broadcast, 4 for 802.3ad, 5 for balance-tlb, " | |
137 | "6 for balance-alb"); | |
1da177e4 LT |
138 | module_param(primary, charp, 0); |
139 | MODULE_PARM_DESC(primary, "Primary network device to use"); | |
a549952a JP |
140 | module_param(primary_reselect, charp, 0); |
141 | MODULE_PARM_DESC(primary_reselect, "Reselect primary slave " | |
142 | "once it comes up; " | |
143 | "0 for always (default), " | |
144 | "1 for only if speed of primary is " | |
145 | "better, " | |
146 | "2 for only on active slave " | |
147 | "failure"); | |
1da177e4 | 148 | module_param(lacp_rate, charp, 0); |
2ac47660 MW |
149 | MODULE_PARM_DESC(lacp_rate, "LACPDU tx rate to request from 802.3ad partner " |
150 | "(slow/fast)"); | |
fd989c83 JV |
151 | module_param(ad_select, charp, 0); |
152 | MODULE_PARM_DESC(ad_select, "803.ad aggregation selection logic: stable (0, default), bandwidth (1), count (2)"); | |
169a3e66 | 153 | module_param(xmit_hash_policy, charp, 0); |
2ac47660 MW |
154 | MODULE_PARM_DESC(xmit_hash_policy, "XOR hashing method: 0 for layer 2 (default)" |
155 | ", 1 for layer 3+4"); | |
1da177e4 LT |
156 | module_param(arp_interval, int, 0); |
157 | MODULE_PARM_DESC(arp_interval, "arp interval in milliseconds"); | |
158 | module_param_array(arp_ip_target, charp, NULL, 0); | |
159 | MODULE_PARM_DESC(arp_ip_target, "arp targets in n.n.n.n form"); | |
f5b2b966 JV |
160 | module_param(arp_validate, charp, 0); |
161 | MODULE_PARM_DESC(arp_validate, "validate src/dst of ARP probes: none (default), active, backup or all"); | |
3915c1e8 JV |
162 | module_param(fail_over_mac, charp, 0); |
163 | MODULE_PARM_DESC(fail_over_mac, "For active-backup, do not set all slaves to the same MAC. none (default), active or follow"); | |
ebd8e497 AG |
164 | module_param(all_slaves_active, int, 0); |
165 | MODULE_PARM_DESC(all_slaves_active, "Keep all frames received on an interface" | |
166 | "by setting active flag for all slaves. " | |
167 | "0 for never (default), 1 for always."); | |
c2952c31 FL |
168 | module_param(resend_igmp, int, 0); |
169 | MODULE_PARM_DESC(resend_igmp, "Number of IGMP membership reports to send on link failure"); | |
1da177e4 LT |
170 | |
171 | /*----------------------------- Global variables ----------------------------*/ | |
172 | ||
e843fa50 | 173 | #ifdef CONFIG_NET_POLL_CONTROLLER |
fb4fa76a | 174 | atomic_t netpoll_block_tx = ATOMIC_INIT(0); |
e843fa50 NH |
175 | #endif |
176 | ||
f71e1309 | 177 | static const char * const version = |
1da177e4 LT |
178 | DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n"; |
179 | ||
f99189b1 | 180 | int bond_net_id __read_mostly; |
1da177e4 | 181 | |
3d632c3f SH |
182 | static __be32 arp_target[BOND_MAX_ARP_TARGETS]; |
183 | static int arp_ip_count; | |
1da177e4 | 184 | static int bond_mode = BOND_MODE_ROUNDROBIN; |
3d632c3f SH |
185 | static int xmit_hashtype = BOND_XMIT_POLICY_LAYER2; |
186 | static int lacp_fast; | |
1da177e4 | 187 | |
e97fd7c6 | 188 | const struct bond_parm_tbl bond_lacp_tbl[] = { |
1da177e4 LT |
189 | { "slow", AD_LACP_SLOW}, |
190 | { "fast", AD_LACP_FAST}, | |
191 | { NULL, -1}, | |
192 | }; | |
193 | ||
e97fd7c6 | 194 | const struct bond_parm_tbl bond_mode_tbl[] = { |
1da177e4 LT |
195 | { "balance-rr", BOND_MODE_ROUNDROBIN}, |
196 | { "active-backup", BOND_MODE_ACTIVEBACKUP}, | |
197 | { "balance-xor", BOND_MODE_XOR}, | |
198 | { "broadcast", BOND_MODE_BROADCAST}, | |
199 | { "802.3ad", BOND_MODE_8023AD}, | |
200 | { "balance-tlb", BOND_MODE_TLB}, | |
201 | { "balance-alb", BOND_MODE_ALB}, | |
202 | { NULL, -1}, | |
203 | }; | |
204 | ||
e97fd7c6 | 205 | const struct bond_parm_tbl xmit_hashtype_tbl[] = { |
169a3e66 JV |
206 | { "layer2", BOND_XMIT_POLICY_LAYER2}, |
207 | { "layer3+4", BOND_XMIT_POLICY_LAYER34}, | |
6f6652be | 208 | { "layer2+3", BOND_XMIT_POLICY_LAYER23}, |
169a3e66 JV |
209 | { NULL, -1}, |
210 | }; | |
211 | ||
e97fd7c6 | 212 | const struct bond_parm_tbl arp_validate_tbl[] = { |
f5b2b966 JV |
213 | { "none", BOND_ARP_VALIDATE_NONE}, |
214 | { "active", BOND_ARP_VALIDATE_ACTIVE}, | |
215 | { "backup", BOND_ARP_VALIDATE_BACKUP}, | |
216 | { "all", BOND_ARP_VALIDATE_ALL}, | |
217 | { NULL, -1}, | |
218 | }; | |
219 | ||
e97fd7c6 | 220 | const struct bond_parm_tbl fail_over_mac_tbl[] = { |
3915c1e8 JV |
221 | { "none", BOND_FOM_NONE}, |
222 | { "active", BOND_FOM_ACTIVE}, | |
223 | { "follow", BOND_FOM_FOLLOW}, | |
224 | { NULL, -1}, | |
225 | }; | |
226 | ||
a549952a JP |
227 | const struct bond_parm_tbl pri_reselect_tbl[] = { |
228 | { "always", BOND_PRI_RESELECT_ALWAYS}, | |
229 | { "better", BOND_PRI_RESELECT_BETTER}, | |
230 | { "failure", BOND_PRI_RESELECT_FAILURE}, | |
231 | { NULL, -1}, | |
232 | }; | |
233 | ||
fd989c83 JV |
234 | struct bond_parm_tbl ad_select_tbl[] = { |
235 | { "stable", BOND_AD_STABLE}, | |
236 | { "bandwidth", BOND_AD_BANDWIDTH}, | |
237 | { "count", BOND_AD_COUNT}, | |
238 | { NULL, -1}, | |
239 | }; | |
240 | ||
1da177e4 LT |
241 | /*-------------------------- Forward declarations ---------------------------*/ |
242 | ||
c3ade5ca | 243 | static void bond_send_gratuitous_arp(struct bonding *bond); |
181470fc | 244 | static int bond_init(struct net_device *bond_dev); |
c67dfb29 | 245 | static void bond_uninit(struct net_device *bond_dev); |
1da177e4 LT |
246 | |
247 | /*---------------------------- General routines -----------------------------*/ | |
248 | ||
4ad072c9 | 249 | static const char *bond_mode_name(int mode) |
1da177e4 | 250 | { |
77afc92b HE |
251 | static const char *names[] = { |
252 | [BOND_MODE_ROUNDROBIN] = "load balancing (round-robin)", | |
253 | [BOND_MODE_ACTIVEBACKUP] = "fault-tolerance (active-backup)", | |
254 | [BOND_MODE_XOR] = "load balancing (xor)", | |
255 | [BOND_MODE_BROADCAST] = "fault-tolerance (broadcast)", | |
3d632c3f | 256 | [BOND_MODE_8023AD] = "IEEE 802.3ad Dynamic link aggregation", |
77afc92b HE |
257 | [BOND_MODE_TLB] = "transmit load balancing", |
258 | [BOND_MODE_ALB] = "adaptive load balancing", | |
259 | }; | |
260 | ||
261 | if (mode < 0 || mode > BOND_MODE_ALB) | |
1da177e4 | 262 | return "unknown"; |
77afc92b HE |
263 | |
264 | return names[mode]; | |
1da177e4 LT |
265 | } |
266 | ||
267 | /*---------------------------------- VLAN -----------------------------------*/ | |
268 | ||
269 | /** | |
270 | * bond_add_vlan - add a new vlan id on bond | |
271 | * @bond: bond that got the notification | |
272 | * @vlan_id: the vlan id to add | |
273 | * | |
274 | * Returns -ENOMEM if allocation failed. | |
275 | */ | |
276 | static int bond_add_vlan(struct bonding *bond, unsigned short vlan_id) | |
277 | { | |
278 | struct vlan_entry *vlan; | |
279 | ||
5a03cdb7 | 280 | pr_debug("bond: %s, vlan id %d\n", |
a4aee5c8 | 281 | (bond ? bond->dev->name : "None"), vlan_id); |
1da177e4 | 282 | |
305d552a | 283 | vlan = kzalloc(sizeof(struct vlan_entry), GFP_KERNEL); |
3d632c3f | 284 | if (!vlan) |
1da177e4 | 285 | return -ENOMEM; |
1da177e4 LT |
286 | |
287 | INIT_LIST_HEAD(&vlan->vlan_list); | |
288 | vlan->vlan_id = vlan_id; | |
289 | ||
290 | write_lock_bh(&bond->lock); | |
291 | ||
292 | list_add_tail(&vlan->vlan_list, &bond->vlan_list); | |
293 | ||
294 | write_unlock_bh(&bond->lock); | |
295 | ||
5a03cdb7 | 296 | pr_debug("added VLAN ID %d on bond %s\n", vlan_id, bond->dev->name); |
1da177e4 LT |
297 | |
298 | return 0; | |
299 | } | |
300 | ||
301 | /** | |
302 | * bond_del_vlan - delete a vlan id from bond | |
303 | * @bond: bond that got the notification | |
304 | * @vlan_id: the vlan id to delete | |
305 | * | |
306 | * returns -ENODEV if @vlan_id was not found in @bond. | |
307 | */ | |
308 | static int bond_del_vlan(struct bonding *bond, unsigned short vlan_id) | |
309 | { | |
0883beca | 310 | struct vlan_entry *vlan; |
1da177e4 LT |
311 | int res = -ENODEV; |
312 | ||
5a03cdb7 | 313 | pr_debug("bond: %s, vlan id %d\n", bond->dev->name, vlan_id); |
1da177e4 | 314 | |
e843fa50 | 315 | block_netpoll_tx(); |
1da177e4 LT |
316 | write_lock_bh(&bond->lock); |
317 | ||
0883beca | 318 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
1da177e4 LT |
319 | if (vlan->vlan_id == vlan_id) { |
320 | list_del(&vlan->vlan_list); | |
321 | ||
58402054 | 322 | if (bond_is_lb(bond)) |
1da177e4 | 323 | bond_alb_clear_vlan(bond, vlan_id); |
1da177e4 | 324 | |
a4aee5c8 JP |
325 | pr_debug("removed VLAN ID %d from bond %s\n", |
326 | vlan_id, bond->dev->name); | |
1da177e4 LT |
327 | |
328 | kfree(vlan); | |
329 | ||
330 | if (list_empty(&bond->vlan_list) && | |
331 | (bond->slave_cnt == 0)) { | |
332 | /* Last VLAN removed and no slaves, so | |
333 | * restore block on adding VLANs. This will | |
334 | * be removed once new slaves that are not | |
335 | * VLAN challenged will be added. | |
336 | */ | |
337 | bond->dev->features |= NETIF_F_VLAN_CHALLENGED; | |
338 | } | |
339 | ||
340 | res = 0; | |
341 | goto out; | |
342 | } | |
343 | } | |
344 | ||
a4aee5c8 JP |
345 | pr_debug("couldn't find VLAN ID %d in bond %s\n", |
346 | vlan_id, bond->dev->name); | |
1da177e4 LT |
347 | |
348 | out: | |
349 | write_unlock_bh(&bond->lock); | |
e843fa50 | 350 | unblock_netpoll_tx(); |
1da177e4 LT |
351 | return res; |
352 | } | |
353 | ||
354 | /** | |
355 | * bond_has_challenged_slaves | |
356 | * @bond: the bond we're working on | |
357 | * | |
358 | * Searches the slave list. Returns 1 if a vlan challenged slave | |
359 | * was found, 0 otherwise. | |
360 | * | |
361 | * Assumes bond->lock is held. | |
362 | */ | |
363 | static int bond_has_challenged_slaves(struct bonding *bond) | |
364 | { | |
365 | struct slave *slave; | |
366 | int i; | |
367 | ||
368 | bond_for_each_slave(bond, slave, i) { | |
369 | if (slave->dev->features & NETIF_F_VLAN_CHALLENGED) { | |
5a03cdb7 | 370 | pr_debug("found VLAN challenged slave - %s\n", |
a4aee5c8 | 371 | slave->dev->name); |
1da177e4 LT |
372 | return 1; |
373 | } | |
374 | } | |
375 | ||
5a03cdb7 | 376 | pr_debug("no VLAN challenged slaves found\n"); |
1da177e4 LT |
377 | return 0; |
378 | } | |
379 | ||
380 | /** | |
381 | * bond_next_vlan - safely skip to the next item in the vlans list. | |
382 | * @bond: the bond we're working on | |
383 | * @curr: item we're advancing from | |
384 | * | |
385 | * Returns %NULL if list is empty, bond->next_vlan if @curr is %NULL, | |
386 | * or @curr->next otherwise (even if it is @curr itself again). | |
3d632c3f | 387 | * |
1da177e4 LT |
388 | * Caller must hold bond->lock |
389 | */ | |
390 | struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr) | |
391 | { | |
392 | struct vlan_entry *next, *last; | |
393 | ||
3d632c3f | 394 | if (list_empty(&bond->vlan_list)) |
1da177e4 | 395 | return NULL; |
1da177e4 LT |
396 | |
397 | if (!curr) { | |
398 | next = list_entry(bond->vlan_list.next, | |
399 | struct vlan_entry, vlan_list); | |
400 | } else { | |
401 | last = list_entry(bond->vlan_list.prev, | |
402 | struct vlan_entry, vlan_list); | |
403 | if (last == curr) { | |
404 | next = list_entry(bond->vlan_list.next, | |
405 | struct vlan_entry, vlan_list); | |
406 | } else { | |
407 | next = list_entry(curr->vlan_list.next, | |
408 | struct vlan_entry, vlan_list); | |
409 | } | |
410 | } | |
411 | ||
412 | return next; | |
413 | } | |
414 | ||
415 | /** | |
416 | * bond_dev_queue_xmit - Prepare skb for xmit. | |
3d632c3f | 417 | * |
1da177e4 LT |
418 | * @bond: bond device that got this skb for tx. |
419 | * @skb: hw accel VLAN tagged skb to transmit | |
420 | * @slave_dev: slave that is supposed to xmit this skbuff | |
1da177e4 | 421 | */ |
3d632c3f SH |
422 | int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, |
423 | struct net_device *slave_dev) | |
1da177e4 | 424 | { |
8387451e | 425 | skb->dev = slave_dev; |
1da177e4 | 426 | skb->priority = 1; |
f6dc31a8 WC |
427 | #ifdef CONFIG_NET_POLL_CONTROLLER |
428 | if (unlikely(bond->dev->priv_flags & IFF_IN_NETPOLL)) { | |
429 | struct netpoll *np = bond->dev->npinfo->netpoll; | |
430 | slave_dev->npinfo = bond->dev->npinfo; | |
f6dc31a8 | 431 | slave_dev->priv_flags |= IFF_IN_NETPOLL; |
c2355e1a | 432 | netpoll_send_skb_on_dev(np, skb, slave_dev); |
f6dc31a8 | 433 | slave_dev->priv_flags &= ~IFF_IN_NETPOLL; |
f6dc31a8 WC |
434 | } else |
435 | #endif | |
436 | dev_queue_xmit(skb); | |
1da177e4 LT |
437 | |
438 | return 0; | |
439 | } | |
440 | ||
441 | /* | |
442 | * In the following 3 functions, bond_vlan_rx_register(), bond_vlan_rx_add_vid | |
443 | * and bond_vlan_rx_kill_vid, We don't protect the slave list iteration with a | |
444 | * lock because: | |
445 | * a. This operation is performed in IOCTL context, | |
446 | * b. The operation is protected by the RTNL semaphore in the 8021q code, | |
447 | * c. Holding a lock with BH disabled while directly calling a base driver | |
448 | * entry point is generally a BAD idea. | |
3d632c3f | 449 | * |
1da177e4 LT |
450 | * The design of synchronization/protection for this operation in the 8021q |
451 | * module is good for one or more VLAN devices over a single physical device | |
452 | * and cannot be extended for a teaming solution like bonding, so there is a | |
453 | * potential race condition here where a net device from the vlan group might | |
454 | * be referenced (either by a base driver or the 8021q code) while it is being | |
455 | * removed from the system. However, it turns out we're not making matters | |
456 | * worse, and if it works for regular VLAN usage it will work here too. | |
457 | */ | |
458 | ||
459 | /** | |
460 | * bond_vlan_rx_register - Propagates registration to slaves | |
461 | * @bond_dev: bonding net device that got called | |
462 | * @grp: vlan group being registered | |
463 | */ | |
3d632c3f SH |
464 | static void bond_vlan_rx_register(struct net_device *bond_dev, |
465 | struct vlan_group *grp) | |
1da177e4 | 466 | { |
454d7c9b | 467 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
468 | struct slave *slave; |
469 | int i; | |
470 | ||
a71fb881 | 471 | write_lock_bh(&bond->lock); |
1da177e4 | 472 | bond->vlgrp = grp; |
a71fb881 | 473 | write_unlock_bh(&bond->lock); |
1da177e4 LT |
474 | |
475 | bond_for_each_slave(bond, slave, i) { | |
476 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 477 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
478 | |
479 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
480 | slave_ops->ndo_vlan_rx_register) { |
481 | slave_ops->ndo_vlan_rx_register(slave_dev, grp); | |
1da177e4 LT |
482 | } |
483 | } | |
484 | } | |
485 | ||
486 | /** | |
487 | * bond_vlan_rx_add_vid - Propagates adding an id to slaves | |
488 | * @bond_dev: bonding net device that got called | |
489 | * @vid: vlan id being added | |
490 | */ | |
491 | static void bond_vlan_rx_add_vid(struct net_device *bond_dev, uint16_t vid) | |
492 | { | |
454d7c9b | 493 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
494 | struct slave *slave; |
495 | int i, res; | |
496 | ||
497 | bond_for_each_slave(bond, slave, i) { | |
498 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 499 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
500 | |
501 | if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && | |
eb7cc59a SH |
502 | slave_ops->ndo_vlan_rx_add_vid) { |
503 | slave_ops->ndo_vlan_rx_add_vid(slave_dev, vid); | |
1da177e4 LT |
504 | } |
505 | } | |
506 | ||
507 | res = bond_add_vlan(bond, vid); | |
508 | if (res) { | |
a4aee5c8 | 509 | pr_err("%s: Error: Failed to add vlan id %d\n", |
1da177e4 LT |
510 | bond_dev->name, vid); |
511 | } | |
512 | } | |
513 | ||
514 | /** | |
515 | * bond_vlan_rx_kill_vid - Propagates deleting an id to slaves | |
516 | * @bond_dev: bonding net device that got called | |
517 | * @vid: vlan id being removed | |
518 | */ | |
519 | static void bond_vlan_rx_kill_vid(struct net_device *bond_dev, uint16_t vid) | |
520 | { | |
454d7c9b | 521 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
522 | struct slave *slave; |
523 | struct net_device *vlan_dev; | |
524 | int i, res; | |
525 | ||
526 | bond_for_each_slave(bond, slave, i) { | |
527 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 528 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
529 | |
530 | if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && | |
eb7cc59a | 531 | slave_ops->ndo_vlan_rx_kill_vid) { |
1da177e4 LT |
532 | /* Save and then restore vlan_dev in the grp array, |
533 | * since the slave's driver might clear it. | |
534 | */ | |
5c15bdec | 535 | vlan_dev = vlan_group_get_device(bond->vlgrp, vid); |
eb7cc59a | 536 | slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vid); |
5c15bdec | 537 | vlan_group_set_device(bond->vlgrp, vid, vlan_dev); |
1da177e4 LT |
538 | } |
539 | } | |
540 | ||
541 | res = bond_del_vlan(bond, vid); | |
542 | if (res) { | |
a4aee5c8 | 543 | pr_err("%s: Error: Failed to remove vlan id %d\n", |
1da177e4 LT |
544 | bond_dev->name, vid); |
545 | } | |
546 | } | |
547 | ||
548 | static void bond_add_vlans_on_slave(struct bonding *bond, struct net_device *slave_dev) | |
549 | { | |
550 | struct vlan_entry *vlan; | |
eb7cc59a | 551 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 | 552 | |
f35188fa | 553 | if (!bond->vlgrp) |
03dc2f4c | 554 | return; |
1da177e4 LT |
555 | |
556 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
557 | slave_ops->ndo_vlan_rx_register) |
558 | slave_ops->ndo_vlan_rx_register(slave_dev, bond->vlgrp); | |
1da177e4 LT |
559 | |
560 | if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || | |
eb7cc59a | 561 | !(slave_ops->ndo_vlan_rx_add_vid)) |
03dc2f4c | 562 | return; |
1da177e4 | 563 | |
eb7cc59a SH |
564 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) |
565 | slave_ops->ndo_vlan_rx_add_vid(slave_dev, vlan->vlan_id); | |
1da177e4 LT |
566 | } |
567 | ||
3d632c3f SH |
568 | static void bond_del_vlans_from_slave(struct bonding *bond, |
569 | struct net_device *slave_dev) | |
1da177e4 | 570 | { |
eb7cc59a | 571 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
572 | struct vlan_entry *vlan; |
573 | struct net_device *vlan_dev; | |
574 | ||
f35188fa | 575 | if (!bond->vlgrp) |
03dc2f4c | 576 | return; |
1da177e4 LT |
577 | |
578 | if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || | |
eb7cc59a | 579 | !(slave_ops->ndo_vlan_rx_kill_vid)) |
1da177e4 | 580 | goto unreg; |
1da177e4 LT |
581 | |
582 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { | |
f35188fa JV |
583 | if (!vlan->vlan_id) |
584 | continue; | |
1da177e4 LT |
585 | /* Save and then restore vlan_dev in the grp array, |
586 | * since the slave's driver might clear it. | |
587 | */ | |
5c15bdec | 588 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
eb7cc59a | 589 | slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vlan->vlan_id); |
5c15bdec | 590 | vlan_group_set_device(bond->vlgrp, vlan->vlan_id, vlan_dev); |
1da177e4 LT |
591 | } |
592 | ||
593 | unreg: | |
594 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
595 | slave_ops->ndo_vlan_rx_register) |
596 | slave_ops->ndo_vlan_rx_register(slave_dev, NULL); | |
1da177e4 LT |
597 | } |
598 | ||
599 | /*------------------------------- Link status -------------------------------*/ | |
600 | ||
ff59c456 JV |
601 | /* |
602 | * Set the carrier state for the master according to the state of its | |
603 | * slaves. If any slaves are up, the master is up. In 802.3ad mode, | |
604 | * do special 802.3ad magic. | |
605 | * | |
606 | * Returns zero if carrier state does not change, nonzero if it does. | |
607 | */ | |
608 | static int bond_set_carrier(struct bonding *bond) | |
609 | { | |
610 | struct slave *slave; | |
611 | int i; | |
612 | ||
613 | if (bond->slave_cnt == 0) | |
614 | goto down; | |
615 | ||
616 | if (bond->params.mode == BOND_MODE_8023AD) | |
617 | return bond_3ad_set_carrier(bond); | |
618 | ||
619 | bond_for_each_slave(bond, slave, i) { | |
620 | if (slave->link == BOND_LINK_UP) { | |
621 | if (!netif_carrier_ok(bond->dev)) { | |
622 | netif_carrier_on(bond->dev); | |
623 | return 1; | |
624 | } | |
625 | return 0; | |
626 | } | |
627 | } | |
628 | ||
629 | down: | |
630 | if (netif_carrier_ok(bond->dev)) { | |
631 | netif_carrier_off(bond->dev); | |
632 | return 1; | |
633 | } | |
634 | return 0; | |
635 | } | |
636 | ||
1da177e4 LT |
637 | /* |
638 | * Get link speed and duplex from the slave's base driver | |
639 | * using ethtool. If for some reason the call fails or the | |
640 | * values are invalid, fake speed and duplex to 100/Full | |
641 | * and return error. | |
642 | */ | |
643 | static int bond_update_speed_duplex(struct slave *slave) | |
644 | { | |
645 | struct net_device *slave_dev = slave->dev; | |
1da177e4 | 646 | struct ethtool_cmd etool; |
61a44b9c | 647 | int res; |
1da177e4 LT |
648 | |
649 | /* Fake speed and duplex */ | |
650 | slave->speed = SPEED_100; | |
651 | slave->duplex = DUPLEX_FULL; | |
652 | ||
61a44b9c MW |
653 | if (!slave_dev->ethtool_ops || !slave_dev->ethtool_ops->get_settings) |
654 | return -1; | |
1da177e4 | 655 | |
61a44b9c MW |
656 | res = slave_dev->ethtool_ops->get_settings(slave_dev, &etool); |
657 | if (res < 0) | |
1da177e4 | 658 | return -1; |
1da177e4 | 659 | |
1da177e4 LT |
660 | switch (etool.speed) { |
661 | case SPEED_10: | |
662 | case SPEED_100: | |
663 | case SPEED_1000: | |
94dbffd5 | 664 | case SPEED_10000: |
1da177e4 LT |
665 | break; |
666 | default: | |
667 | return -1; | |
668 | } | |
669 | ||
670 | switch (etool.duplex) { | |
671 | case DUPLEX_FULL: | |
672 | case DUPLEX_HALF: | |
673 | break; | |
674 | default: | |
675 | return -1; | |
676 | } | |
677 | ||
678 | slave->speed = etool.speed; | |
679 | slave->duplex = etool.duplex; | |
680 | ||
681 | return 0; | |
682 | } | |
683 | ||
684 | /* | |
685 | * if <dev> supports MII link status reporting, check its link status. | |
686 | * | |
687 | * We either do MII/ETHTOOL ioctls, or check netif_carrier_ok(), | |
3d632c3f | 688 | * depending upon the setting of the use_carrier parameter. |
1da177e4 LT |
689 | * |
690 | * Return either BMSR_LSTATUS, meaning that the link is up (or we | |
691 | * can't tell and just pretend it is), or 0, meaning that the link is | |
692 | * down. | |
693 | * | |
694 | * If reporting is non-zero, instead of faking link up, return -1 if | |
695 | * both ETHTOOL and MII ioctls fail (meaning the device does not | |
696 | * support them). If use_carrier is set, return whatever it says. | |
697 | * It'd be nice if there was a good way to tell if a driver supports | |
698 | * netif_carrier, but there really isn't. | |
699 | */ | |
3d632c3f SH |
700 | static int bond_check_dev_link(struct bonding *bond, |
701 | struct net_device *slave_dev, int reporting) | |
1da177e4 | 702 | { |
eb7cc59a | 703 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
d9d52832 | 704 | int (*ioctl)(struct net_device *, struct ifreq *, int); |
1da177e4 LT |
705 | struct ifreq ifr; |
706 | struct mii_ioctl_data *mii; | |
1da177e4 | 707 | |
6c988853 PG |
708 | if (!reporting && !netif_running(slave_dev)) |
709 | return 0; | |
710 | ||
eb7cc59a | 711 | if (bond->params.use_carrier) |
1da177e4 | 712 | return netif_carrier_ok(slave_dev) ? BMSR_LSTATUS : 0; |
1da177e4 | 713 | |
29112f4e JP |
714 | /* Try to get link status using Ethtool first. */ |
715 | if (slave_dev->ethtool_ops) { | |
716 | if (slave_dev->ethtool_ops->get_link) { | |
717 | u32 link; | |
718 | ||
719 | link = slave_dev->ethtool_ops->get_link(slave_dev); | |
720 | ||
721 | return link ? BMSR_LSTATUS : 0; | |
722 | } | |
723 | } | |
724 | ||
3d632c3f | 725 | /* Ethtool can't be used, fallback to MII ioctls. */ |
eb7cc59a | 726 | ioctl = slave_ops->ndo_do_ioctl; |
1da177e4 LT |
727 | if (ioctl) { |
728 | /* TODO: set pointer to correct ioctl on a per team member */ | |
729 | /* bases to make this more efficient. that is, once */ | |
730 | /* we determine the correct ioctl, we will always */ | |
731 | /* call it and not the others for that team */ | |
732 | /* member. */ | |
733 | ||
734 | /* | |
735 | * We cannot assume that SIOCGMIIPHY will also read a | |
736 | * register; not all network drivers (e.g., e100) | |
737 | * support that. | |
738 | */ | |
739 | ||
740 | /* Yes, the mii is overlaid on the ifreq.ifr_ifru */ | |
741 | strncpy(ifr.ifr_name, slave_dev->name, IFNAMSIZ); | |
742 | mii = if_mii(&ifr); | |
743 | if (IOCTL(slave_dev, &ifr, SIOCGMIIPHY) == 0) { | |
744 | mii->reg_num = MII_BMSR; | |
3d632c3f SH |
745 | if (IOCTL(slave_dev, &ifr, SIOCGMIIREG) == 0) |
746 | return mii->val_out & BMSR_LSTATUS; | |
1da177e4 LT |
747 | } |
748 | } | |
749 | ||
1da177e4 LT |
750 | /* |
751 | * If reporting, report that either there's no dev->do_ioctl, | |
61a44b9c | 752 | * or both SIOCGMIIREG and get_link failed (meaning that we |
1da177e4 LT |
753 | * cannot report link status). If not reporting, pretend |
754 | * we're ok. | |
755 | */ | |
3d632c3f | 756 | return reporting ? -1 : BMSR_LSTATUS; |
1da177e4 LT |
757 | } |
758 | ||
759 | /*----------------------------- Multicast list ------------------------------*/ | |
760 | ||
1da177e4 LT |
761 | /* |
762 | * Push the promiscuity flag down to appropriate slaves | |
763 | */ | |
7e1a1ac1 | 764 | static int bond_set_promiscuity(struct bonding *bond, int inc) |
1da177e4 | 765 | { |
7e1a1ac1 | 766 | int err = 0; |
1da177e4 LT |
767 | if (USES_PRIMARY(bond->params.mode)) { |
768 | /* write lock already acquired */ | |
769 | if (bond->curr_active_slave) { | |
7e1a1ac1 WC |
770 | err = dev_set_promiscuity(bond->curr_active_slave->dev, |
771 | inc); | |
1da177e4 LT |
772 | } |
773 | } else { | |
774 | struct slave *slave; | |
775 | int i; | |
776 | bond_for_each_slave(bond, slave, i) { | |
7e1a1ac1 WC |
777 | err = dev_set_promiscuity(slave->dev, inc); |
778 | if (err) | |
779 | return err; | |
1da177e4 LT |
780 | } |
781 | } | |
7e1a1ac1 | 782 | return err; |
1da177e4 LT |
783 | } |
784 | ||
785 | /* | |
786 | * Push the allmulti flag down to all slaves | |
787 | */ | |
7e1a1ac1 | 788 | static int bond_set_allmulti(struct bonding *bond, int inc) |
1da177e4 | 789 | { |
7e1a1ac1 | 790 | int err = 0; |
1da177e4 LT |
791 | if (USES_PRIMARY(bond->params.mode)) { |
792 | /* write lock already acquired */ | |
793 | if (bond->curr_active_slave) { | |
7e1a1ac1 WC |
794 | err = dev_set_allmulti(bond->curr_active_slave->dev, |
795 | inc); | |
1da177e4 LT |
796 | } |
797 | } else { | |
798 | struct slave *slave; | |
799 | int i; | |
800 | bond_for_each_slave(bond, slave, i) { | |
7e1a1ac1 WC |
801 | err = dev_set_allmulti(slave->dev, inc); |
802 | if (err) | |
803 | return err; | |
1da177e4 LT |
804 | } |
805 | } | |
7e1a1ac1 | 806 | return err; |
1da177e4 LT |
807 | } |
808 | ||
809 | /* | |
810 | * Add a Multicast address to slaves | |
811 | * according to mode | |
812 | */ | |
22bedad3 | 813 | static void bond_mc_add(struct bonding *bond, void *addr) |
1da177e4 LT |
814 | { |
815 | if (USES_PRIMARY(bond->params.mode)) { | |
816 | /* write lock already acquired */ | |
3d632c3f | 817 | if (bond->curr_active_slave) |
22bedad3 | 818 | dev_mc_add(bond->curr_active_slave->dev, addr); |
1da177e4 LT |
819 | } else { |
820 | struct slave *slave; | |
821 | int i; | |
3d632c3f SH |
822 | |
823 | bond_for_each_slave(bond, slave, i) | |
22bedad3 | 824 | dev_mc_add(slave->dev, addr); |
1da177e4 LT |
825 | } |
826 | } | |
827 | ||
828 | /* | |
829 | * Remove a multicast address from slave | |
830 | * according to mode | |
831 | */ | |
22bedad3 | 832 | static void bond_mc_del(struct bonding *bond, void *addr) |
1da177e4 LT |
833 | { |
834 | if (USES_PRIMARY(bond->params.mode)) { | |
835 | /* write lock already acquired */ | |
3d632c3f | 836 | if (bond->curr_active_slave) |
22bedad3 | 837 | dev_mc_del(bond->curr_active_slave->dev, addr); |
1da177e4 LT |
838 | } else { |
839 | struct slave *slave; | |
840 | int i; | |
841 | bond_for_each_slave(bond, slave, i) { | |
22bedad3 | 842 | dev_mc_del(slave->dev, addr); |
1da177e4 LT |
843 | } |
844 | } | |
845 | } | |
846 | ||
a816c7c7 | 847 | |
5a37e8ca | 848 | static void __bond_resend_igmp_join_requests(struct net_device *dev) |
a816c7c7 JV |
849 | { |
850 | struct in_device *in_dev; | |
a816c7c7 JV |
851 | |
852 | rcu_read_lock(); | |
5a37e8ca | 853 | in_dev = __in_dev_get_rcu(dev); |
866f3b25 | 854 | if (in_dev) |
24912420 | 855 | ip_mc_rejoin_groups(in_dev); |
a816c7c7 JV |
856 | rcu_read_unlock(); |
857 | } | |
858 | ||
5a37e8ca FL |
859 | /* |
860 | * Retrieve the list of registered multicast addresses for the bonding | |
861 | * device and retransmit an IGMP JOIN request to the current active | |
862 | * slave. | |
863 | */ | |
864 | static void bond_resend_igmp_join_requests(struct bonding *bond) | |
865 | { | |
866 | struct net_device *vlan_dev; | |
867 | struct vlan_entry *vlan; | |
868 | ||
869 | read_lock(&bond->lock); | |
870 | ||
871 | /* rejoin all groups on bond device */ | |
872 | __bond_resend_igmp_join_requests(bond->dev); | |
873 | ||
874 | /* rejoin all groups on vlan devices */ | |
875 | if (bond->vlgrp) { | |
876 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { | |
877 | vlan_dev = vlan_group_get_device(bond->vlgrp, | |
878 | vlan->vlan_id); | |
879 | if (vlan_dev) | |
880 | __bond_resend_igmp_join_requests(vlan_dev); | |
881 | } | |
882 | } | |
883 | ||
c2952c31 FL |
884 | if (--bond->igmp_retrans > 0) |
885 | queue_delayed_work(bond->wq, &bond->mcast_work, HZ/5); | |
886 | ||
5a37e8ca FL |
887 | read_unlock(&bond->lock); |
888 | } | |
889 | ||
379b7383 | 890 | static void bond_resend_igmp_join_requests_delayed(struct work_struct *work) |
5a37e8ca FL |
891 | { |
892 | struct bonding *bond = container_of(work, struct bonding, | |
893 | mcast_work.work); | |
894 | bond_resend_igmp_join_requests(bond); | |
895 | } | |
896 | ||
1da177e4 LT |
897 | /* |
898 | * flush all members of flush->mc_list from device dev->mc_list | |
899 | */ | |
3d632c3f SH |
900 | static void bond_mc_list_flush(struct net_device *bond_dev, |
901 | struct net_device *slave_dev) | |
1da177e4 | 902 | { |
454d7c9b | 903 | struct bonding *bond = netdev_priv(bond_dev); |
22bedad3 | 904 | struct netdev_hw_addr *ha; |
1da177e4 | 905 | |
22bedad3 JP |
906 | netdev_for_each_mc_addr(ha, bond_dev) |
907 | dev_mc_del(slave_dev, ha->addr); | |
1da177e4 LT |
908 | |
909 | if (bond->params.mode == BOND_MODE_8023AD) { | |
910 | /* del lacpdu mc addr from mc list */ | |
911 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; | |
912 | ||
22bedad3 | 913 | dev_mc_del(slave_dev, lacpdu_multicast); |
1da177e4 LT |
914 | } |
915 | } | |
916 | ||
917 | /*--------------------------- Active slave change ---------------------------*/ | |
918 | ||
919 | /* | |
920 | * Update the mc list and multicast-related flags for the new and | |
921 | * old active slaves (if any) according to the multicast mode, and | |
922 | * promiscuous flags unconditionally. | |
923 | */ | |
3d632c3f SH |
924 | static void bond_mc_swap(struct bonding *bond, struct slave *new_active, |
925 | struct slave *old_active) | |
1da177e4 | 926 | { |
22bedad3 | 927 | struct netdev_hw_addr *ha; |
1da177e4 | 928 | |
3d632c3f | 929 | if (!USES_PRIMARY(bond->params.mode)) |
1da177e4 LT |
930 | /* nothing to do - mc list is already up-to-date on |
931 | * all slaves | |
932 | */ | |
933 | return; | |
1da177e4 LT |
934 | |
935 | if (old_active) { | |
3d632c3f | 936 | if (bond->dev->flags & IFF_PROMISC) |
1da177e4 | 937 | dev_set_promiscuity(old_active->dev, -1); |
1da177e4 | 938 | |
3d632c3f | 939 | if (bond->dev->flags & IFF_ALLMULTI) |
1da177e4 | 940 | dev_set_allmulti(old_active->dev, -1); |
1da177e4 | 941 | |
22bedad3 JP |
942 | netdev_for_each_mc_addr(ha, bond->dev) |
943 | dev_mc_del(old_active->dev, ha->addr); | |
1da177e4 LT |
944 | } |
945 | ||
946 | if (new_active) { | |
7e1a1ac1 | 947 | /* FIXME: Signal errors upstream. */ |
3d632c3f | 948 | if (bond->dev->flags & IFF_PROMISC) |
1da177e4 | 949 | dev_set_promiscuity(new_active->dev, 1); |
1da177e4 | 950 | |
3d632c3f | 951 | if (bond->dev->flags & IFF_ALLMULTI) |
1da177e4 | 952 | dev_set_allmulti(new_active->dev, 1); |
1da177e4 | 953 | |
22bedad3 JP |
954 | netdev_for_each_mc_addr(ha, bond->dev) |
955 | dev_mc_add(new_active->dev, ha->addr); | |
1da177e4 LT |
956 | } |
957 | } | |
958 | ||
3915c1e8 JV |
959 | /* |
960 | * bond_do_fail_over_mac | |
961 | * | |
962 | * Perform special MAC address swapping for fail_over_mac settings | |
963 | * | |
964 | * Called with RTNL, bond->lock for read, curr_slave_lock for write_bh. | |
965 | */ | |
966 | static void bond_do_fail_over_mac(struct bonding *bond, | |
967 | struct slave *new_active, | |
968 | struct slave *old_active) | |
1f78d9f9 HE |
969 | __releases(&bond->curr_slave_lock) |
970 | __releases(&bond->lock) | |
971 | __acquires(&bond->lock) | |
972 | __acquires(&bond->curr_slave_lock) | |
3915c1e8 JV |
973 | { |
974 | u8 tmp_mac[ETH_ALEN]; | |
975 | struct sockaddr saddr; | |
976 | int rv; | |
977 | ||
978 | switch (bond->params.fail_over_mac) { | |
979 | case BOND_FOM_ACTIVE: | |
980 | if (new_active) | |
981 | memcpy(bond->dev->dev_addr, new_active->dev->dev_addr, | |
982 | new_active->dev->addr_len); | |
983 | break; | |
984 | case BOND_FOM_FOLLOW: | |
985 | /* | |
986 | * if new_active && old_active, swap them | |
987 | * if just old_active, do nothing (going to no active slave) | |
988 | * if just new_active, set new_active to bond's MAC | |
989 | */ | |
990 | if (!new_active) | |
991 | return; | |
992 | ||
993 | write_unlock_bh(&bond->curr_slave_lock); | |
994 | read_unlock(&bond->lock); | |
995 | ||
996 | if (old_active) { | |
997 | memcpy(tmp_mac, new_active->dev->dev_addr, ETH_ALEN); | |
998 | memcpy(saddr.sa_data, old_active->dev->dev_addr, | |
999 | ETH_ALEN); | |
1000 | saddr.sa_family = new_active->dev->type; | |
1001 | } else { | |
1002 | memcpy(saddr.sa_data, bond->dev->dev_addr, ETH_ALEN); | |
1003 | saddr.sa_family = bond->dev->type; | |
1004 | } | |
1005 | ||
1006 | rv = dev_set_mac_address(new_active->dev, &saddr); | |
1007 | if (rv) { | |
a4aee5c8 | 1008 | pr_err("%s: Error %d setting MAC of slave %s\n", |
3915c1e8 JV |
1009 | bond->dev->name, -rv, new_active->dev->name); |
1010 | goto out; | |
1011 | } | |
1012 | ||
1013 | if (!old_active) | |
1014 | goto out; | |
1015 | ||
1016 | memcpy(saddr.sa_data, tmp_mac, ETH_ALEN); | |
1017 | saddr.sa_family = old_active->dev->type; | |
1018 | ||
1019 | rv = dev_set_mac_address(old_active->dev, &saddr); | |
1020 | if (rv) | |
a4aee5c8 | 1021 | pr_err("%s: Error %d setting MAC of slave %s\n", |
3915c1e8 JV |
1022 | bond->dev->name, -rv, new_active->dev->name); |
1023 | out: | |
1024 | read_lock(&bond->lock); | |
1025 | write_lock_bh(&bond->curr_slave_lock); | |
1026 | break; | |
1027 | default: | |
a4aee5c8 | 1028 | pr_err("%s: bond_do_fail_over_mac impossible: bad policy %d\n", |
3915c1e8 JV |
1029 | bond->dev->name, bond->params.fail_over_mac); |
1030 | break; | |
1031 | } | |
1032 | ||
1033 | } | |
1034 | ||
a549952a JP |
1035 | static bool bond_should_change_active(struct bonding *bond) |
1036 | { | |
1037 | struct slave *prim = bond->primary_slave; | |
1038 | struct slave *curr = bond->curr_active_slave; | |
1039 | ||
1040 | if (!prim || !curr || curr->link != BOND_LINK_UP) | |
1041 | return true; | |
1042 | if (bond->force_primary) { | |
1043 | bond->force_primary = false; | |
1044 | return true; | |
1045 | } | |
1046 | if (bond->params.primary_reselect == BOND_PRI_RESELECT_BETTER && | |
1047 | (prim->speed < curr->speed || | |
1048 | (prim->speed == curr->speed && prim->duplex <= curr->duplex))) | |
1049 | return false; | |
1050 | if (bond->params.primary_reselect == BOND_PRI_RESELECT_FAILURE) | |
1051 | return false; | |
1052 | return true; | |
1053 | } | |
3915c1e8 | 1054 | |
1da177e4 LT |
1055 | /** |
1056 | * find_best_interface - select the best available slave to be the active one | |
1057 | * @bond: our bonding struct | |
1058 | * | |
1059 | * Warning: Caller must hold curr_slave_lock for writing. | |
1060 | */ | |
1061 | static struct slave *bond_find_best_slave(struct bonding *bond) | |
1062 | { | |
1063 | struct slave *new_active, *old_active; | |
1064 | struct slave *bestslave = NULL; | |
1065 | int mintime = bond->params.updelay; | |
1066 | int i; | |
1067 | ||
49b4ad92 | 1068 | new_active = bond->curr_active_slave; |
1da177e4 LT |
1069 | |
1070 | if (!new_active) { /* there were no active slaves left */ | |
3d632c3f | 1071 | if (bond->slave_cnt > 0) /* found one slave */ |
1da177e4 | 1072 | new_active = bond->first_slave; |
3d632c3f | 1073 | else |
1da177e4 | 1074 | return NULL; /* still no slave, return NULL */ |
1da177e4 LT |
1075 | } |
1076 | ||
1da177e4 | 1077 | if ((bond->primary_slave) && |
a549952a JP |
1078 | bond->primary_slave->link == BOND_LINK_UP && |
1079 | bond_should_change_active(bond)) { | |
1da177e4 LT |
1080 | new_active = bond->primary_slave; |
1081 | } | |
1082 | ||
1083 | /* remember where to stop iterating over the slaves */ | |
1084 | old_active = new_active; | |
1085 | ||
1086 | bond_for_each_slave_from(bond, new_active, i, old_active) { | |
b9f60253 JP |
1087 | if (new_active->link == BOND_LINK_UP) { |
1088 | return new_active; | |
1089 | } else if (new_active->link == BOND_LINK_BACK && | |
1090 | IS_UP(new_active->dev)) { | |
1091 | /* link up, but waiting for stabilization */ | |
1092 | if (new_active->delay < mintime) { | |
1093 | mintime = new_active->delay; | |
1094 | bestslave = new_active; | |
1da177e4 LT |
1095 | } |
1096 | } | |
1097 | } | |
1098 | ||
1099 | return bestslave; | |
1100 | } | |
1101 | ||
1102 | /** | |
1103 | * change_active_interface - change the active slave into the specified one | |
1104 | * @bond: our bonding struct | |
1105 | * @new: the new slave to make the active one | |
1106 | * | |
1107 | * Set the new slave to the bond's settings and unset them on the old | |
1108 | * curr_active_slave. | |
1109 | * Setting include flags, mc-list, promiscuity, allmulti, etc. | |
1110 | * | |
1111 | * If @new's link state is %BOND_LINK_BACK we'll set it to %BOND_LINK_UP, | |
1112 | * because it is apparently the best available slave we have, even though its | |
1113 | * updelay hasn't timed out yet. | |
1114 | * | |
3915c1e8 JV |
1115 | * If new_active is not NULL, caller must hold bond->lock for read and |
1116 | * curr_slave_lock for write_bh. | |
1da177e4 | 1117 | */ |
a77b5325 | 1118 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active) |
1da177e4 LT |
1119 | { |
1120 | struct slave *old_active = bond->curr_active_slave; | |
1121 | ||
3d632c3f | 1122 | if (old_active == new_active) |
1da177e4 | 1123 | return; |
1da177e4 LT |
1124 | |
1125 | if (new_active) { | |
b2220cad JV |
1126 | new_active->jiffies = jiffies; |
1127 | ||
1da177e4 LT |
1128 | if (new_active->link == BOND_LINK_BACK) { |
1129 | if (USES_PRIMARY(bond->params.mode)) { | |
a4aee5c8 JP |
1130 | pr_info("%s: making interface %s the new active one %d ms earlier.\n", |
1131 | bond->dev->name, new_active->dev->name, | |
1132 | (bond->params.updelay - new_active->delay) * bond->params.miimon); | |
1da177e4 LT |
1133 | } |
1134 | ||
1135 | new_active->delay = 0; | |
1136 | new_active->link = BOND_LINK_UP; | |
1da177e4 | 1137 | |
3d632c3f | 1138 | if (bond->params.mode == BOND_MODE_8023AD) |
1da177e4 | 1139 | bond_3ad_handle_link_change(new_active, BOND_LINK_UP); |
1da177e4 | 1140 | |
58402054 | 1141 | if (bond_is_lb(bond)) |
1da177e4 | 1142 | bond_alb_handle_link_change(bond, new_active, BOND_LINK_UP); |
1da177e4 LT |
1143 | } else { |
1144 | if (USES_PRIMARY(bond->params.mode)) { | |
a4aee5c8 JP |
1145 | pr_info("%s: making interface %s the new active one.\n", |
1146 | bond->dev->name, new_active->dev->name); | |
1da177e4 LT |
1147 | } |
1148 | } | |
1149 | } | |
1150 | ||
3d632c3f | 1151 | if (USES_PRIMARY(bond->params.mode)) |
1da177e4 | 1152 | bond_mc_swap(bond, new_active, old_active); |
1da177e4 | 1153 | |
58402054 | 1154 | if (bond_is_lb(bond)) { |
1da177e4 | 1155 | bond_alb_handle_active_change(bond, new_active); |
8f903c70 JV |
1156 | if (old_active) |
1157 | bond_set_slave_inactive_flags(old_active); | |
1158 | if (new_active) | |
1159 | bond_set_slave_active_flags(new_active); | |
1da177e4 LT |
1160 | } else { |
1161 | bond->curr_active_slave = new_active; | |
1162 | } | |
c3ade5ca JV |
1163 | |
1164 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) { | |
3d632c3f | 1165 | if (old_active) |
c3ade5ca | 1166 | bond_set_slave_inactive_flags(old_active); |
c3ade5ca JV |
1167 | |
1168 | if (new_active) { | |
1169 | bond_set_slave_active_flags(new_active); | |
2ab82852 | 1170 | |
709f8a45 OG |
1171 | if (bond->params.fail_over_mac) |
1172 | bond_do_fail_over_mac(bond, new_active, | |
1173 | old_active); | |
3915c1e8 | 1174 | |
ffa95ed5 BH |
1175 | if (netif_running(bond->dev)) { |
1176 | bond->send_grat_arp = bond->params.num_grat_arp; | |
1177 | bond_send_gratuitous_arp(bond); | |
01f3109d | 1178 | |
ffa95ed5 BH |
1179 | bond->send_unsol_na = bond->params.num_unsol_na; |
1180 | bond_send_unsolicited_na(bond); | |
1181 | } | |
305d552a | 1182 | |
01f3109d OG |
1183 | write_unlock_bh(&bond->curr_slave_lock); |
1184 | read_unlock(&bond->lock); | |
1185 | ||
75c78500 | 1186 | netdev_bonding_change(bond->dev, NETDEV_BONDING_FAILOVER); |
01f3109d OG |
1187 | |
1188 | read_lock(&bond->lock); | |
1189 | write_lock_bh(&bond->curr_slave_lock); | |
7893b249 | 1190 | } |
c3ade5ca | 1191 | } |
a2fd940f | 1192 | |
5a37e8ca FL |
1193 | /* resend IGMP joins since active slave has changed or |
1194 | * all were sent on curr_active_slave */ | |
ffa95ed5 BH |
1195 | if (((USES_PRIMARY(bond->params.mode) && new_active) || |
1196 | bond->params.mode == BOND_MODE_ROUNDROBIN) && | |
1197 | netif_running(bond->dev)) { | |
c2952c31 | 1198 | bond->igmp_retrans = bond->params.resend_igmp; |
5a37e8ca | 1199 | queue_delayed_work(bond->wq, &bond->mcast_work, 0); |
a2fd940f | 1200 | } |
1da177e4 LT |
1201 | } |
1202 | ||
1203 | /** | |
1204 | * bond_select_active_slave - select a new active slave, if needed | |
1205 | * @bond: our bonding struct | |
1206 | * | |
3d632c3f | 1207 | * This functions should be called when one of the following occurs: |
1da177e4 LT |
1208 | * - The old curr_active_slave has been released or lost its link. |
1209 | * - The primary_slave has got its link back. | |
1210 | * - A slave has got its link back and there's no old curr_active_slave. | |
1211 | * | |
3915c1e8 | 1212 | * Caller must hold bond->lock for read and curr_slave_lock for write_bh. |
1da177e4 | 1213 | */ |
a77b5325 | 1214 | void bond_select_active_slave(struct bonding *bond) |
1da177e4 LT |
1215 | { |
1216 | struct slave *best_slave; | |
ff59c456 | 1217 | int rv; |
1da177e4 LT |
1218 | |
1219 | best_slave = bond_find_best_slave(bond); | |
1220 | if (best_slave != bond->curr_active_slave) { | |
1221 | bond_change_active_slave(bond, best_slave); | |
ff59c456 JV |
1222 | rv = bond_set_carrier(bond); |
1223 | if (!rv) | |
1224 | return; | |
1225 | ||
1226 | if (netif_carrier_ok(bond->dev)) { | |
a4aee5c8 JP |
1227 | pr_info("%s: first active interface up!\n", |
1228 | bond->dev->name); | |
ff59c456 | 1229 | } else { |
a4aee5c8 JP |
1230 | pr_info("%s: now running without any active interface !\n", |
1231 | bond->dev->name); | |
ff59c456 | 1232 | } |
1da177e4 LT |
1233 | } |
1234 | } | |
1235 | ||
1236 | /*--------------------------- slave list handling ---------------------------*/ | |
1237 | ||
1238 | /* | |
1239 | * This function attaches the slave to the end of list. | |
1240 | * | |
1241 | * bond->lock held for writing by caller. | |
1242 | */ | |
1243 | static void bond_attach_slave(struct bonding *bond, struct slave *new_slave) | |
1244 | { | |
1245 | if (bond->first_slave == NULL) { /* attaching the first slave */ | |
1246 | new_slave->next = new_slave; | |
1247 | new_slave->prev = new_slave; | |
1248 | bond->first_slave = new_slave; | |
1249 | } else { | |
1250 | new_slave->next = bond->first_slave; | |
1251 | new_slave->prev = bond->first_slave->prev; | |
1252 | new_slave->next->prev = new_slave; | |
1253 | new_slave->prev->next = new_slave; | |
1254 | } | |
1255 | ||
1256 | bond->slave_cnt++; | |
1257 | } | |
1258 | ||
1259 | /* | |
1260 | * This function detaches the slave from the list. | |
1261 | * WARNING: no check is made to verify if the slave effectively | |
1262 | * belongs to <bond>. | |
1263 | * Nothing is freed on return, structures are just unchained. | |
1264 | * If any slave pointer in bond was pointing to <slave>, | |
1265 | * it should be changed by the calling function. | |
1266 | * | |
1267 | * bond->lock held for writing by caller. | |
1268 | */ | |
1269 | static void bond_detach_slave(struct bonding *bond, struct slave *slave) | |
1270 | { | |
3d632c3f | 1271 | if (slave->next) |
1da177e4 | 1272 | slave->next->prev = slave->prev; |
1da177e4 | 1273 | |
3d632c3f | 1274 | if (slave->prev) |
1da177e4 | 1275 | slave->prev->next = slave->next; |
1da177e4 LT |
1276 | |
1277 | if (bond->first_slave == slave) { /* slave is the first slave */ | |
1278 | if (bond->slave_cnt > 1) { /* there are more slave */ | |
1279 | bond->first_slave = slave->next; | |
1280 | } else { | |
1281 | bond->first_slave = NULL; /* slave was the last one */ | |
1282 | } | |
1283 | } | |
1284 | ||
1285 | slave->next = NULL; | |
1286 | slave->prev = NULL; | |
1287 | bond->slave_cnt--; | |
1288 | } | |
1289 | ||
f6dc31a8 WC |
1290 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1291 | /* | |
1292 | * You must hold read lock on bond->lock before calling this. | |
1293 | */ | |
1294 | static bool slaves_support_netpoll(struct net_device *bond_dev) | |
1295 | { | |
1296 | struct bonding *bond = netdev_priv(bond_dev); | |
1297 | struct slave *slave; | |
1298 | int i = 0; | |
1299 | bool ret = true; | |
1300 | ||
1301 | bond_for_each_slave(bond, slave, i) { | |
1302 | if ((slave->dev->priv_flags & IFF_DISABLE_NETPOLL) || | |
1303 | !slave->dev->netdev_ops->ndo_poll_controller) | |
1304 | ret = false; | |
1305 | } | |
1306 | return i != 0 && ret; | |
1307 | } | |
1308 | ||
1309 | static void bond_poll_controller(struct net_device *bond_dev) | |
1310 | { | |
c2355e1a NH |
1311 | struct bonding *bond = netdev_priv(bond_dev); |
1312 | struct slave *slave; | |
1313 | int i; | |
1314 | ||
1315 | bond_for_each_slave(bond, slave, i) { | |
1316 | if (slave->dev && IS_UP(slave->dev)) | |
1317 | netpoll_poll_dev(slave->dev); | |
1318 | } | |
f6dc31a8 WC |
1319 | } |
1320 | ||
1321 | static void bond_netpoll_cleanup(struct net_device *bond_dev) | |
1322 | { | |
1323 | struct bonding *bond = netdev_priv(bond_dev); | |
1324 | struct slave *slave; | |
1325 | const struct net_device_ops *ops; | |
1326 | int i; | |
1327 | ||
1328 | read_lock(&bond->lock); | |
1329 | bond_dev->npinfo = NULL; | |
1330 | bond_for_each_slave(bond, slave, i) { | |
1331 | if (slave->dev) { | |
1332 | ops = slave->dev->netdev_ops; | |
1333 | if (ops->ndo_netpoll_cleanup) | |
1334 | ops->ndo_netpoll_cleanup(slave->dev); | |
1335 | else | |
1336 | slave->dev->npinfo = NULL; | |
1337 | } | |
1338 | } | |
1339 | read_unlock(&bond->lock); | |
1340 | } | |
1341 | ||
1342 | #else | |
1343 | ||
1344 | static void bond_netpoll_cleanup(struct net_device *bond_dev) | |
1345 | { | |
1346 | } | |
1347 | ||
1348 | #endif | |
1349 | ||
1da177e4 LT |
1350 | /*---------------------------------- IOCTL ----------------------------------*/ |
1351 | ||
4ad072c9 AB |
1352 | static int bond_sethwaddr(struct net_device *bond_dev, |
1353 | struct net_device *slave_dev) | |
1da177e4 | 1354 | { |
5a03cdb7 HE |
1355 | pr_debug("bond_dev=%p\n", bond_dev); |
1356 | pr_debug("slave_dev=%p\n", slave_dev); | |
1357 | pr_debug("slave_dev->addr_len=%d\n", slave_dev->addr_len); | |
1da177e4 LT |
1358 | memcpy(bond_dev->dev_addr, slave_dev->dev_addr, slave_dev->addr_len); |
1359 | return 0; | |
1360 | } | |
1361 | ||
7f353bf2 HX |
1362 | #define BOND_VLAN_FEATURES \ |
1363 | (NETIF_F_VLAN_CHALLENGED | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX | \ | |
1364 | NETIF_F_HW_VLAN_FILTER) | |
8531c5ff | 1365 | |
3d632c3f | 1366 | /* |
8e3babcd | 1367 | * Compute the common dev->feature set available to all slaves. Some |
7f353bf2 HX |
1368 | * feature bits are managed elsewhere, so preserve those feature bits |
1369 | * on the master device. | |
8531c5ff AK |
1370 | */ |
1371 | static int bond_compute_features(struct bonding *bond) | |
1372 | { | |
8531c5ff AK |
1373 | struct slave *slave; |
1374 | struct net_device *bond_dev = bond->dev; | |
04ed3e74 MM |
1375 | u32 features = bond_dev->features; |
1376 | u32 vlan_features = 0; | |
3158bf7d MS |
1377 | unsigned short max_hard_header_len = max((u16)ETH_HLEN, |
1378 | bond_dev->hard_header_len); | |
8e3babcd | 1379 | int i; |
8531c5ff | 1380 | |
7f353bf2 | 1381 | features &= ~(NETIF_F_ALL_CSUM | BOND_VLAN_FEATURES); |
b63365a2 HX |
1382 | features |= NETIF_F_GSO_MASK | NETIF_F_NO_CSUM; |
1383 | ||
1384 | if (!bond->first_slave) | |
1385 | goto done; | |
1386 | ||
1387 | features &= ~NETIF_F_ONE_FOR_ALL; | |
7f353bf2 | 1388 | |
278339a4 | 1389 | vlan_features = bond->first_slave->dev->vlan_features; |
54ef3137 | 1390 | bond_for_each_slave(bond, slave, i) { |
b63365a2 HX |
1391 | features = netdev_increment_features(features, |
1392 | slave->dev->features, | |
1393 | NETIF_F_ONE_FOR_ALL); | |
278339a4 JV |
1394 | vlan_features = netdev_increment_features(vlan_features, |
1395 | slave->dev->vlan_features, | |
1396 | NETIF_F_ONE_FOR_ALL); | |
54ef3137 JV |
1397 | if (slave->dev->hard_header_len > max_hard_header_len) |
1398 | max_hard_header_len = slave->dev->hard_header_len; | |
1399 | } | |
8531c5ff | 1400 | |
b63365a2 | 1401 | done: |
7f353bf2 | 1402 | features |= (bond_dev->features & BOND_VLAN_FEATURES); |
acd1130e MM |
1403 | bond_dev->features = netdev_fix_features(bond_dev, features); |
1404 | bond_dev->vlan_features = netdev_fix_features(bond_dev, vlan_features); | |
54ef3137 | 1405 | bond_dev->hard_header_len = max_hard_header_len; |
8531c5ff AK |
1406 | |
1407 | return 0; | |
1408 | } | |
1409 | ||
872254dd MS |
1410 | static void bond_setup_by_slave(struct net_device *bond_dev, |
1411 | struct net_device *slave_dev) | |
1412 | { | |
454d7c9b | 1413 | struct bonding *bond = netdev_priv(bond_dev); |
d90a162a | 1414 | |
00829823 | 1415 | bond_dev->header_ops = slave_dev->header_ops; |
872254dd MS |
1416 | |
1417 | bond_dev->type = slave_dev->type; | |
1418 | bond_dev->hard_header_len = slave_dev->hard_header_len; | |
1419 | bond_dev->addr_len = slave_dev->addr_len; | |
1420 | ||
1421 | memcpy(bond_dev->broadcast, slave_dev->broadcast, | |
1422 | slave_dev->addr_len); | |
d90a162a | 1423 | bond->setup_by_slave = 1; |
872254dd MS |
1424 | } |
1425 | ||
1da177e4 | 1426 | /* enslave device <slave> to bond device <master> */ |
a77b5325 | 1427 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) |
1da177e4 | 1428 | { |
454d7c9b | 1429 | struct bonding *bond = netdev_priv(bond_dev); |
eb7cc59a | 1430 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 | 1431 | struct slave *new_slave = NULL; |
22bedad3 | 1432 | struct netdev_hw_addr *ha; |
1da177e4 LT |
1433 | struct sockaddr addr; |
1434 | int link_reporting; | |
1435 | int old_features = bond_dev->features; | |
1436 | int res = 0; | |
1437 | ||
552709d5 | 1438 | if (!bond->params.use_carrier && slave_dev->ethtool_ops == NULL && |
eb7cc59a | 1439 | slave_ops->ndo_do_ioctl == NULL) { |
a4aee5c8 JP |
1440 | pr_warning("%s: Warning: no link monitoring support for %s\n", |
1441 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1442 | } |
1443 | ||
1444 | /* bond must be initialized by bond_open() before enslaving */ | |
1445 | if (!(bond_dev->flags & IFF_UP)) { | |
a4aee5c8 JP |
1446 | pr_warning("%s: master_dev is not up in bond_enslave\n", |
1447 | bond_dev->name); | |
1da177e4 LT |
1448 | } |
1449 | ||
1450 | /* already enslaved */ | |
1451 | if (slave_dev->flags & IFF_SLAVE) { | |
5a03cdb7 | 1452 | pr_debug("Error, Device was already enslaved\n"); |
1da177e4 LT |
1453 | return -EBUSY; |
1454 | } | |
1455 | ||
1456 | /* vlan challenged mutual exclusion */ | |
1457 | /* no need to lock since we're protected by rtnl_lock */ | |
1458 | if (slave_dev->features & NETIF_F_VLAN_CHALLENGED) { | |
5a03cdb7 | 1459 | pr_debug("%s: NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
f35188fa | 1460 | if (bond->vlgrp) { |
a4aee5c8 JP |
1461 | pr_err("%s: Error: cannot enslave VLAN challenged slave %s on VLAN enabled bond %s\n", |
1462 | bond_dev->name, slave_dev->name, bond_dev->name); | |
1da177e4 LT |
1463 | return -EPERM; |
1464 | } else { | |
a4aee5c8 JP |
1465 | pr_warning("%s: Warning: enslaved VLAN challenged slave %s. Adding VLANs will be blocked as long as %s is part of bond %s\n", |
1466 | bond_dev->name, slave_dev->name, | |
1467 | slave_dev->name, bond_dev->name); | |
1da177e4 LT |
1468 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
1469 | } | |
1470 | } else { | |
5a03cdb7 | 1471 | pr_debug("%s: ! NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
1da177e4 LT |
1472 | if (bond->slave_cnt == 0) { |
1473 | /* First slave, and it is not VLAN challenged, | |
1474 | * so remove the block of adding VLANs over the bond. | |
1475 | */ | |
1476 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; | |
1477 | } | |
1478 | } | |
1479 | ||
217df670 JV |
1480 | /* |
1481 | * Old ifenslave binaries are no longer supported. These can | |
3d632c3f | 1482 | * be identified with moderate accuracy by the state of the slave: |
217df670 JV |
1483 | * the current ifenslave will set the interface down prior to |
1484 | * enslaving it; the old ifenslave will not. | |
1485 | */ | |
1486 | if ((slave_dev->flags & IFF_UP)) { | |
a4aee5c8 | 1487 | pr_err("%s is up. This may be due to an out of date ifenslave.\n", |
217df670 JV |
1488 | slave_dev->name); |
1489 | res = -EPERM; | |
1490 | goto err_undo_flags; | |
1491 | } | |
1da177e4 | 1492 | |
872254dd MS |
1493 | /* set bonding device ether type by slave - bonding netdevices are |
1494 | * created with ether_setup, so when the slave type is not ARPHRD_ETHER | |
1495 | * there is a need to override some of the type dependent attribs/funcs. | |
1496 | * | |
1497 | * bond ether type mutual exclusion - don't allow slaves of dissimilar | |
1498 | * ether type (eg ARPHRD_ETHER and ARPHRD_INFINIBAND) share the same bond | |
1499 | */ | |
1500 | if (bond->slave_cnt == 0) { | |
e36b9d16 | 1501 | if (bond_dev->type != slave_dev->type) { |
e36b9d16 | 1502 | pr_debug("%s: change device type from %d to %d\n", |
a4aee5c8 JP |
1503 | bond_dev->name, |
1504 | bond_dev->type, slave_dev->type); | |
75c78500 | 1505 | |
3ca5b404 JP |
1506 | res = netdev_bonding_change(bond_dev, |
1507 | NETDEV_PRE_TYPE_CHANGE); | |
1508 | res = notifier_to_errno(res); | |
1509 | if (res) { | |
1510 | pr_err("%s: refused to change device type\n", | |
1511 | bond_dev->name); | |
1512 | res = -EBUSY; | |
1513 | goto err_undo_flags; | |
1514 | } | |
75c78500 | 1515 | |
32a806c1 | 1516 | /* Flush unicast and multicast addresses */ |
a748ee24 | 1517 | dev_uc_flush(bond_dev); |
22bedad3 | 1518 | dev_mc_flush(bond_dev); |
32a806c1 | 1519 | |
e36b9d16 MS |
1520 | if (slave_dev->type != ARPHRD_ETHER) |
1521 | bond_setup_by_slave(bond_dev, slave_dev); | |
1522 | else | |
1523 | ether_setup(bond_dev); | |
75c78500 | 1524 | |
93d9b7d7 JP |
1525 | netdev_bonding_change(bond_dev, |
1526 | NETDEV_POST_TYPE_CHANGE); | |
e36b9d16 | 1527 | } |
872254dd | 1528 | } else if (bond_dev->type != slave_dev->type) { |
a4aee5c8 JP |
1529 | pr_err("%s ether type (%d) is different from other slaves (%d), can not enslave it.\n", |
1530 | slave_dev->name, | |
1531 | slave_dev->type, bond_dev->type); | |
1532 | res = -EINVAL; | |
1533 | goto err_undo_flags; | |
872254dd MS |
1534 | } |
1535 | ||
eb7cc59a | 1536 | if (slave_ops->ndo_set_mac_address == NULL) { |
2ab82852 | 1537 | if (bond->slave_cnt == 0) { |
a4aee5c8 JP |
1538 | pr_warning("%s: Warning: The first slave device specified does not support setting the MAC address. Setting fail_over_mac to active.", |
1539 | bond_dev->name); | |
3915c1e8 JV |
1540 | bond->params.fail_over_mac = BOND_FOM_ACTIVE; |
1541 | } else if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { | |
a4aee5c8 JP |
1542 | pr_err("%s: Error: The slave device specified does not support setting the MAC address, but fail_over_mac is not set to active.\n", |
1543 | bond_dev->name); | |
2ab82852 MS |
1544 | res = -EOPNOTSUPP; |
1545 | goto err_undo_flags; | |
1546 | } | |
1da177e4 LT |
1547 | } |
1548 | ||
c20811a7 JP |
1549 | /* If this is the first slave, then we need to set the master's hardware |
1550 | * address to be the same as the slave's. */ | |
d13a2cb6 | 1551 | if (is_zero_ether_addr(bond->dev->dev_addr)) |
c20811a7 JP |
1552 | memcpy(bond->dev->dev_addr, slave_dev->dev_addr, |
1553 | slave_dev->addr_len); | |
1554 | ||
1555 | ||
243cb4e5 | 1556 | new_slave = kzalloc(sizeof(struct slave), GFP_KERNEL); |
1da177e4 LT |
1557 | if (!new_slave) { |
1558 | res = -ENOMEM; | |
1559 | goto err_undo_flags; | |
1560 | } | |
1561 | ||
bb1d9123 AG |
1562 | /* |
1563 | * Set the new_slave's queue_id to be zero. Queue ID mapping | |
1564 | * is set via sysfs or module option if desired. | |
1565 | */ | |
1566 | new_slave->queue_id = 0; | |
1567 | ||
b15ba0fb JP |
1568 | /* Save slave's original mtu and then set it to match the bond */ |
1569 | new_slave->original_mtu = slave_dev->mtu; | |
1570 | res = dev_set_mtu(slave_dev, bond->dev->mtu); | |
1571 | if (res) { | |
1572 | pr_debug("Error %d calling dev_set_mtu\n", res); | |
1573 | goto err_free; | |
1574 | } | |
1575 | ||
217df670 JV |
1576 | /* |
1577 | * Save slave's original ("permanent") mac address for modes | |
1578 | * that need it, and for restoring it upon release, and then | |
1579 | * set it to the master's address | |
1580 | */ | |
1581 | memcpy(new_slave->perm_hwaddr, slave_dev->dev_addr, ETH_ALEN); | |
1da177e4 | 1582 | |
dd957c57 | 1583 | if (!bond->params.fail_over_mac) { |
2ab82852 MS |
1584 | /* |
1585 | * Set slave to master's mac address. The application already | |
1586 | * set the master's mac address to that of the first slave | |
1587 | */ | |
1588 | memcpy(addr.sa_data, bond_dev->dev_addr, bond_dev->addr_len); | |
1589 | addr.sa_family = slave_dev->type; | |
1590 | res = dev_set_mac_address(slave_dev, &addr); | |
1591 | if (res) { | |
5a03cdb7 | 1592 | pr_debug("Error %d calling set_mac_address\n", res); |
b15ba0fb | 1593 | goto err_restore_mtu; |
2ab82852 | 1594 | } |
217df670 | 1595 | } |
1da177e4 | 1596 | |
1765a575 | 1597 | res = netdev_set_bond_master(slave_dev, bond_dev); |
c2edacf8 | 1598 | if (res) { |
1765a575 | 1599 | pr_debug("Error %d calling netdev_set_bond_master\n", res); |
569f0c4d | 1600 | goto err_restore_mac; |
c2edacf8 | 1601 | } |
217df670 JV |
1602 | /* open the slave since the application closed it */ |
1603 | res = dev_open(slave_dev); | |
1604 | if (res) { | |
3d632c3f | 1605 | pr_debug("Opening slave %s failed\n", slave_dev->name); |
569f0c4d | 1606 | goto err_unset_master; |
1da177e4 LT |
1607 | } |
1608 | ||
1da177e4 | 1609 | new_slave->dev = slave_dev; |
0b680e75 | 1610 | slave_dev->priv_flags |= IFF_BONDING; |
1da177e4 | 1611 | |
58402054 | 1612 | if (bond_is_lb(bond)) { |
1da177e4 LT |
1613 | /* bond_alb_init_slave() must be called before all other stages since |
1614 | * it might fail and we do not want to have to undo everything | |
1615 | */ | |
1616 | res = bond_alb_init_slave(bond, new_slave); | |
3d632c3f | 1617 | if (res) |
569f0c4d | 1618 | goto err_close; |
1da177e4 LT |
1619 | } |
1620 | ||
1621 | /* If the mode USES_PRIMARY, then the new slave gets the | |
1622 | * master's promisc (and mc) settings only if it becomes the | |
1623 | * curr_active_slave, and that is taken care of later when calling | |
1624 | * bond_change_active() | |
1625 | */ | |
1626 | if (!USES_PRIMARY(bond->params.mode)) { | |
1627 | /* set promiscuity level to new slave */ | |
1628 | if (bond_dev->flags & IFF_PROMISC) { | |
7e1a1ac1 WC |
1629 | res = dev_set_promiscuity(slave_dev, 1); |
1630 | if (res) | |
1631 | goto err_close; | |
1da177e4 LT |
1632 | } |
1633 | ||
1634 | /* set allmulti level to new slave */ | |
1635 | if (bond_dev->flags & IFF_ALLMULTI) { | |
7e1a1ac1 WC |
1636 | res = dev_set_allmulti(slave_dev, 1); |
1637 | if (res) | |
1638 | goto err_close; | |
1da177e4 LT |
1639 | } |
1640 | ||
b9e40857 | 1641 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 1642 | /* upload master's mc_list to new slave */ |
22bedad3 JP |
1643 | netdev_for_each_mc_addr(ha, bond_dev) |
1644 | dev_mc_add(slave_dev, ha->addr); | |
b9e40857 | 1645 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
1646 | } |
1647 | ||
1648 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1649 | /* add lacpdu mc addr to mc list */ | |
1650 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; | |
1651 | ||
22bedad3 | 1652 | dev_mc_add(slave_dev, lacpdu_multicast); |
1da177e4 LT |
1653 | } |
1654 | ||
1655 | bond_add_vlans_on_slave(bond, slave_dev); | |
1656 | ||
1657 | write_lock_bh(&bond->lock); | |
1658 | ||
1659 | bond_attach_slave(bond, new_slave); | |
1660 | ||
1661 | new_slave->delay = 0; | |
1662 | new_slave->link_failure_count = 0; | |
1663 | ||
8531c5ff AK |
1664 | bond_compute_features(bond); |
1665 | ||
3915c1e8 JV |
1666 | write_unlock_bh(&bond->lock); |
1667 | ||
1668 | read_lock(&bond->lock); | |
1669 | ||
f5b2b966 JV |
1670 | new_slave->last_arp_rx = jiffies; |
1671 | ||
1da177e4 LT |
1672 | if (bond->params.miimon && !bond->params.use_carrier) { |
1673 | link_reporting = bond_check_dev_link(bond, slave_dev, 1); | |
1674 | ||
1675 | if ((link_reporting == -1) && !bond->params.arp_interval) { | |
1676 | /* | |
1677 | * miimon is set but a bonded network driver | |
1678 | * does not support ETHTOOL/MII and | |
1679 | * arp_interval is not set. Note: if | |
1680 | * use_carrier is enabled, we will never go | |
1681 | * here (because netif_carrier is always | |
1682 | * supported); thus, we don't need to change | |
1683 | * the messages for netif_carrier. | |
1684 | */ | |
a4aee5c8 | 1685 | pr_warning("%s: Warning: MII and ETHTOOL support not available for interface %s, and arp_interval/arp_ip_target module parameters not specified, thus bonding will not detect link failures! see bonding.txt for details.\n", |
4e0952c7 | 1686 | bond_dev->name, slave_dev->name); |
1da177e4 LT |
1687 | } else if (link_reporting == -1) { |
1688 | /* unable get link status using mii/ethtool */ | |
a4aee5c8 JP |
1689 | pr_warning("%s: Warning: can't get link status from interface %s; the network driver associated with this interface does not support MII or ETHTOOL link status reporting, thus miimon has no effect on this interface.\n", |
1690 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1691 | } |
1692 | } | |
1693 | ||
1694 | /* check for initial state */ | |
1695 | if (!bond->params.miimon || | |
1696 | (bond_check_dev_link(bond, slave_dev, 0) == BMSR_LSTATUS)) { | |
1697 | if (bond->params.updelay) { | |
a4aee5c8 | 1698 | pr_debug("Initial state of slave_dev is BOND_LINK_BACK\n"); |
1da177e4 LT |
1699 | new_slave->link = BOND_LINK_BACK; |
1700 | new_slave->delay = bond->params.updelay; | |
1701 | } else { | |
a4aee5c8 | 1702 | pr_debug("Initial state of slave_dev is BOND_LINK_UP\n"); |
1da177e4 LT |
1703 | new_slave->link = BOND_LINK_UP; |
1704 | } | |
1705 | new_slave->jiffies = jiffies; | |
1706 | } else { | |
a4aee5c8 | 1707 | pr_debug("Initial state of slave_dev is BOND_LINK_DOWN\n"); |
1da177e4 LT |
1708 | new_slave->link = BOND_LINK_DOWN; |
1709 | } | |
1710 | ||
1711 | if (bond_update_speed_duplex(new_slave) && | |
1712 | (new_slave->link != BOND_LINK_DOWN)) { | |
a4aee5c8 JP |
1713 | pr_warning("%s: Warning: failed to get speed and duplex from %s, assumed to be 100Mb/sec and Full.\n", |
1714 | bond_dev->name, new_slave->dev->name); | |
1da177e4 LT |
1715 | |
1716 | if (bond->params.mode == BOND_MODE_8023AD) { | |
a4aee5c8 JP |
1717 | pr_warning("%s: Warning: Operation of 802.3ad mode requires ETHTOOL support in base driver for proper aggregator selection.\n", |
1718 | bond_dev->name); | |
1da177e4 LT |
1719 | } |
1720 | } | |
1721 | ||
1722 | if (USES_PRIMARY(bond->params.mode) && bond->params.primary[0]) { | |
1723 | /* if there is a primary slave, remember it */ | |
a549952a | 1724 | if (strcmp(bond->params.primary, new_slave->dev->name) == 0) { |
1da177e4 | 1725 | bond->primary_slave = new_slave; |
a549952a JP |
1726 | bond->force_primary = true; |
1727 | } | |
1da177e4 LT |
1728 | } |
1729 | ||
3915c1e8 JV |
1730 | write_lock_bh(&bond->curr_slave_lock); |
1731 | ||
1da177e4 LT |
1732 | switch (bond->params.mode) { |
1733 | case BOND_MODE_ACTIVEBACKUP: | |
8a8e447b JV |
1734 | bond_set_slave_inactive_flags(new_slave); |
1735 | bond_select_active_slave(bond); | |
1da177e4 LT |
1736 | break; |
1737 | case BOND_MODE_8023AD: | |
1738 | /* in 802.3ad mode, the internal mechanism | |
1739 | * will activate the slaves in the selected | |
1740 | * aggregator | |
1741 | */ | |
1742 | bond_set_slave_inactive_flags(new_slave); | |
1743 | /* if this is the first slave */ | |
1744 | if (bond->slave_cnt == 1) { | |
1745 | SLAVE_AD_INFO(new_slave).id = 1; | |
1746 | /* Initialize AD with the number of times that the AD timer is called in 1 second | |
1747 | * can be called only after the mac address of the bond is set | |
1748 | */ | |
1749 | bond_3ad_initialize(bond, 1000/AD_TIMER_INTERVAL, | |
1750 | bond->params.lacp_fast); | |
1751 | } else { | |
1752 | SLAVE_AD_INFO(new_slave).id = | |
1753 | SLAVE_AD_INFO(new_slave->prev).id + 1; | |
1754 | } | |
1755 | ||
1756 | bond_3ad_bind_slave(new_slave); | |
1757 | break; | |
1758 | case BOND_MODE_TLB: | |
1759 | case BOND_MODE_ALB: | |
1760 | new_slave->state = BOND_STATE_ACTIVE; | |
059fe7a5 | 1761 | bond_set_slave_inactive_flags(new_slave); |
5a29f789 | 1762 | bond_select_active_slave(bond); |
1da177e4 LT |
1763 | break; |
1764 | default: | |
5a03cdb7 | 1765 | pr_debug("This slave is always active in trunk mode\n"); |
1da177e4 LT |
1766 | |
1767 | /* always active in trunk mode */ | |
1768 | new_slave->state = BOND_STATE_ACTIVE; | |
1769 | ||
1770 | /* In trunking mode there is little meaning to curr_active_slave | |
1771 | * anyway (it holds no special properties of the bond device), | |
1772 | * so we can change it without calling change_active_interface() | |
1773 | */ | |
3d632c3f | 1774 | if (!bond->curr_active_slave) |
1da177e4 | 1775 | bond->curr_active_slave = new_slave; |
3d632c3f | 1776 | |
1da177e4 LT |
1777 | break; |
1778 | } /* switch(bond_mode) */ | |
1779 | ||
3915c1e8 JV |
1780 | write_unlock_bh(&bond->curr_slave_lock); |
1781 | ||
ff59c456 JV |
1782 | bond_set_carrier(bond); |
1783 | ||
f6dc31a8 | 1784 | #ifdef CONFIG_NET_POLL_CONTROLLER |
45b0cb8a NH |
1785 | if (slaves_support_netpoll(bond_dev)) { |
1786 | bond_dev->priv_flags &= ~IFF_DISABLE_NETPOLL; | |
1787 | if (bond_dev->npinfo) | |
1788 | slave_dev->npinfo = bond_dev->npinfo; | |
1789 | } else if (!(bond_dev->priv_flags & IFF_DISABLE_NETPOLL)) { | |
f6dc31a8 | 1790 | bond_dev->priv_flags |= IFF_DISABLE_NETPOLL; |
45b0cb8a NH |
1791 | pr_info("New slave device %s does not support netpoll\n", |
1792 | slave_dev->name); | |
1793 | pr_info("Disabling netpoll support for %s\n", bond_dev->name); | |
f6dc31a8 WC |
1794 | } |
1795 | #endif | |
3915c1e8 | 1796 | read_unlock(&bond->lock); |
1da177e4 | 1797 | |
b76cdba9 MW |
1798 | res = bond_create_slave_symlinks(bond_dev, slave_dev); |
1799 | if (res) | |
569f0c4d | 1800 | goto err_close; |
b76cdba9 | 1801 | |
a4aee5c8 JP |
1802 | pr_info("%s: enslaving %s as a%s interface with a%s link.\n", |
1803 | bond_dev->name, slave_dev->name, | |
1804 | new_slave->state == BOND_STATE_ACTIVE ? "n active" : " backup", | |
1805 | new_slave->link != BOND_LINK_DOWN ? "n up" : " down"); | |
1da177e4 LT |
1806 | |
1807 | /* enslave is successful */ | |
1808 | return 0; | |
1809 | ||
1810 | /* Undo stages on error */ | |
1da177e4 LT |
1811 | err_close: |
1812 | dev_close(slave_dev); | |
1813 | ||
569f0c4d | 1814 | err_unset_master: |
1765a575 | 1815 | netdev_set_bond_master(slave_dev, NULL); |
569f0c4d | 1816 | |
1da177e4 | 1817 | err_restore_mac: |
dd957c57 | 1818 | if (!bond->params.fail_over_mac) { |
3915c1e8 JV |
1819 | /* XXX TODO - fom follow mode needs to change master's |
1820 | * MAC if this slave's MAC is in use by the bond, or at | |
1821 | * least print a warning. | |
1822 | */ | |
2ab82852 MS |
1823 | memcpy(addr.sa_data, new_slave->perm_hwaddr, ETH_ALEN); |
1824 | addr.sa_family = slave_dev->type; | |
1825 | dev_set_mac_address(slave_dev, &addr); | |
1826 | } | |
1da177e4 | 1827 | |
b15ba0fb JP |
1828 | err_restore_mtu: |
1829 | dev_set_mtu(slave_dev, new_slave->original_mtu); | |
1830 | ||
1da177e4 LT |
1831 | err_free: |
1832 | kfree(new_slave); | |
1833 | ||
1834 | err_undo_flags: | |
1835 | bond_dev->features = old_features; | |
3d632c3f | 1836 | |
1da177e4 LT |
1837 | return res; |
1838 | } | |
1839 | ||
1840 | /* | |
1841 | * Try to release the slave device <slave> from the bond device <master> | |
1842 | * It is legal to access curr_active_slave without a lock because all the function | |
1843 | * is write-locked. | |
1844 | * | |
1845 | * The rules for slave state should be: | |
1846 | * for Active/Backup: | |
1847 | * Active stays on all backups go down | |
1848 | * for Bonded connections: | |
1849 | * The first up interface should be left on and all others downed. | |
1850 | */ | |
a77b5325 | 1851 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev) |
1da177e4 | 1852 | { |
454d7c9b | 1853 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
1854 | struct slave *slave, *oldcurrent; |
1855 | struct sockaddr addr; | |
1da177e4 LT |
1856 | |
1857 | /* slave is not a slave or master is not master of this slave */ | |
1858 | if (!(slave_dev->flags & IFF_SLAVE) || | |
1859 | (slave_dev->master != bond_dev)) { | |
a4aee5c8 | 1860 | pr_err("%s: Error: cannot release %s.\n", |
1da177e4 LT |
1861 | bond_dev->name, slave_dev->name); |
1862 | return -EINVAL; | |
1863 | } | |
1864 | ||
e843fa50 | 1865 | block_netpoll_tx(); |
f6dc31a8 | 1866 | netdev_bonding_change(bond_dev, NETDEV_BONDING_DESLAVE); |
1da177e4 LT |
1867 | write_lock_bh(&bond->lock); |
1868 | ||
1869 | slave = bond_get_slave_by_dev(bond, slave_dev); | |
1870 | if (!slave) { | |
1871 | /* not a slave of this bond */ | |
a4aee5c8 JP |
1872 | pr_info("%s: %s not enslaved\n", |
1873 | bond_dev->name, slave_dev->name); | |
f5e2a7b2 | 1874 | write_unlock_bh(&bond->lock); |
e843fa50 | 1875 | unblock_netpoll_tx(); |
1da177e4 LT |
1876 | return -EINVAL; |
1877 | } | |
1878 | ||
3915c1e8 | 1879 | if (!bond->params.fail_over_mac) { |
8e95a202 JP |
1880 | if (!compare_ether_addr(bond_dev->dev_addr, slave->perm_hwaddr) && |
1881 | bond->slave_cnt > 1) | |
a4aee5c8 JP |
1882 | pr_warning("%s: Warning: the permanent HWaddr of %s - %pM - is still in use by %s. Set the HWaddr of %s to a different address to avoid conflicts.\n", |
1883 | bond_dev->name, slave_dev->name, | |
1884 | slave->perm_hwaddr, | |
1885 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1886 | } |
1887 | ||
1888 | /* Inform AD package of unbinding of slave. */ | |
1889 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1890 | /* must be called before the slave is | |
1891 | * detached from the list | |
1892 | */ | |
1893 | bond_3ad_unbind_slave(slave); | |
1894 | } | |
1895 | ||
a4aee5c8 JP |
1896 | pr_info("%s: releasing %s interface %s\n", |
1897 | bond_dev->name, | |
1898 | (slave->state == BOND_STATE_ACTIVE) ? "active" : "backup", | |
1899 | slave_dev->name); | |
1da177e4 LT |
1900 | |
1901 | oldcurrent = bond->curr_active_slave; | |
1902 | ||
1903 | bond->current_arp_slave = NULL; | |
1904 | ||
1905 | /* release the slave from its bond */ | |
1906 | bond_detach_slave(bond, slave); | |
1907 | ||
8531c5ff AK |
1908 | bond_compute_features(bond); |
1909 | ||
3d632c3f | 1910 | if (bond->primary_slave == slave) |
1da177e4 | 1911 | bond->primary_slave = NULL; |
1da177e4 | 1912 | |
3d632c3f | 1913 | if (oldcurrent == slave) |
1da177e4 | 1914 | bond_change_active_slave(bond, NULL); |
1da177e4 | 1915 | |
58402054 | 1916 | if (bond_is_lb(bond)) { |
1da177e4 LT |
1917 | /* Must be called only after the slave has been |
1918 | * detached from the list and the curr_active_slave | |
1919 | * has been cleared (if our_slave == old_current), | |
1920 | * but before a new active slave is selected. | |
1921 | */ | |
2543331d | 1922 | write_unlock_bh(&bond->lock); |
1da177e4 | 1923 | bond_alb_deinit_slave(bond, slave); |
2543331d | 1924 | write_lock_bh(&bond->lock); |
1da177e4 LT |
1925 | } |
1926 | ||
059fe7a5 JV |
1927 | if (oldcurrent == slave) { |
1928 | /* | |
1929 | * Note that we hold RTNL over this sequence, so there | |
1930 | * is no concern that another slave add/remove event | |
1931 | * will interfere. | |
1932 | */ | |
1933 | write_unlock_bh(&bond->lock); | |
1934 | read_lock(&bond->lock); | |
1935 | write_lock_bh(&bond->curr_slave_lock); | |
1936 | ||
1da177e4 LT |
1937 | bond_select_active_slave(bond); |
1938 | ||
059fe7a5 JV |
1939 | write_unlock_bh(&bond->curr_slave_lock); |
1940 | read_unlock(&bond->lock); | |
1941 | write_lock_bh(&bond->lock); | |
1942 | } | |
1943 | ||
1da177e4 | 1944 | if (bond->slave_cnt == 0) { |
ff59c456 JV |
1945 | bond_set_carrier(bond); |
1946 | ||
1da177e4 LT |
1947 | /* if the last slave was removed, zero the mac address |
1948 | * of the master so it will be set by the application | |
1949 | * to the mac address of the first slave | |
1950 | */ | |
1951 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); | |
1952 | ||
f35188fa | 1953 | if (!bond->vlgrp) { |
1da177e4 LT |
1954 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
1955 | } else { | |
a4aee5c8 JP |
1956 | pr_warning("%s: Warning: clearing HW address of %s while it still has VLANs.\n", |
1957 | bond_dev->name, bond_dev->name); | |
1958 | pr_warning("%s: When re-adding slaves, make sure the bond's HW address matches its VLANs'.\n", | |
1959 | bond_dev->name); | |
1da177e4 LT |
1960 | } |
1961 | } else if ((bond_dev->features & NETIF_F_VLAN_CHALLENGED) && | |
1962 | !bond_has_challenged_slaves(bond)) { | |
a4aee5c8 JP |
1963 | pr_info("%s: last VLAN challenged slave %s left bond %s. VLAN blocking is removed\n", |
1964 | bond_dev->name, slave_dev->name, bond_dev->name); | |
1da177e4 LT |
1965 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; |
1966 | } | |
1967 | ||
1968 | write_unlock_bh(&bond->lock); | |
e843fa50 | 1969 | unblock_netpoll_tx(); |
1da177e4 | 1970 | |
b76cdba9 MW |
1971 | /* must do this from outside any spinlocks */ |
1972 | bond_destroy_slave_symlinks(bond_dev, slave_dev); | |
1973 | ||
1da177e4 LT |
1974 | bond_del_vlans_from_slave(bond, slave_dev); |
1975 | ||
1976 | /* If the mode USES_PRIMARY, then we should only remove its | |
1977 | * promisc and mc settings if it was the curr_active_slave, but that was | |
1978 | * already taken care of above when we detached the slave | |
1979 | */ | |
1980 | if (!USES_PRIMARY(bond->params.mode)) { | |
1981 | /* unset promiscuity level from slave */ | |
3d632c3f | 1982 | if (bond_dev->flags & IFF_PROMISC) |
1da177e4 | 1983 | dev_set_promiscuity(slave_dev, -1); |
1da177e4 LT |
1984 | |
1985 | /* unset allmulti level from slave */ | |
3d632c3f | 1986 | if (bond_dev->flags & IFF_ALLMULTI) |
1da177e4 | 1987 | dev_set_allmulti(slave_dev, -1); |
1da177e4 LT |
1988 | |
1989 | /* flush master's mc_list from slave */ | |
b9e40857 | 1990 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 1991 | bond_mc_list_flush(bond_dev, slave_dev); |
b9e40857 | 1992 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
1993 | } |
1994 | ||
1765a575 | 1995 | netdev_set_bond_master(slave_dev, NULL); |
1da177e4 | 1996 | |
f6dc31a8 WC |
1997 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1998 | read_lock_bh(&bond->lock); | |
c22d7ac8 | 1999 | |
45b0cb8a NH |
2000 | if (slaves_support_netpoll(bond_dev)) |
2001 | bond_dev->priv_flags &= ~IFF_DISABLE_NETPOLL; | |
f6dc31a8 WC |
2002 | read_unlock_bh(&bond->lock); |
2003 | if (slave_dev->netdev_ops->ndo_netpoll_cleanup) | |
2004 | slave_dev->netdev_ops->ndo_netpoll_cleanup(slave_dev); | |
2005 | else | |
2006 | slave_dev->npinfo = NULL; | |
2007 | #endif | |
2008 | ||
1da177e4 LT |
2009 | /* close slave before restoring its mac address */ |
2010 | dev_close(slave_dev); | |
2011 | ||
3915c1e8 | 2012 | if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { |
2ab82852 MS |
2013 | /* restore original ("permanent") mac address */ |
2014 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); | |
2015 | addr.sa_family = slave_dev->type; | |
2016 | dev_set_mac_address(slave_dev, &addr); | |
2017 | } | |
1da177e4 | 2018 | |
b15ba0fb JP |
2019 | dev_set_mtu(slave_dev, slave->original_mtu); |
2020 | ||
8f903c70 | 2021 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
f5b2b966 JV |
2022 | IFF_SLAVE_INACTIVE | IFF_BONDING | |
2023 | IFF_SLAVE_NEEDARP); | |
1da177e4 LT |
2024 | |
2025 | kfree(slave); | |
2026 | ||
2027 | return 0; /* deletion OK */ | |
2028 | } | |
2029 | ||
d90a162a | 2030 | /* |
3d632c3f | 2031 | * First release a slave and than destroy the bond if no more slaves are left. |
d90a162a MS |
2032 | * Must be under rtnl_lock when this function is called. |
2033 | */ | |
26d8ee75 | 2034 | static int bond_release_and_destroy(struct net_device *bond_dev, |
2035 | struct net_device *slave_dev) | |
d90a162a | 2036 | { |
454d7c9b | 2037 | struct bonding *bond = netdev_priv(bond_dev); |
d90a162a MS |
2038 | int ret; |
2039 | ||
2040 | ret = bond_release(bond_dev, slave_dev); | |
2041 | if ((ret == 0) && (bond->slave_cnt == 0)) { | |
a4aee5c8 JP |
2042 | pr_info("%s: destroying bond %s.\n", |
2043 | bond_dev->name, bond_dev->name); | |
9e71626c | 2044 | unregister_netdevice(bond_dev); |
d90a162a MS |
2045 | } |
2046 | return ret; | |
2047 | } | |
2048 | ||
1da177e4 LT |
2049 | /* |
2050 | * This function releases all slaves. | |
2051 | */ | |
2052 | static int bond_release_all(struct net_device *bond_dev) | |
2053 | { | |
454d7c9b | 2054 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2055 | struct slave *slave; |
2056 | struct net_device *slave_dev; | |
2057 | struct sockaddr addr; | |
2058 | ||
2059 | write_lock_bh(&bond->lock); | |
2060 | ||
ff59c456 JV |
2061 | netif_carrier_off(bond_dev); |
2062 | ||
3d632c3f | 2063 | if (bond->slave_cnt == 0) |
1da177e4 | 2064 | goto out; |
1da177e4 LT |
2065 | |
2066 | bond->current_arp_slave = NULL; | |
2067 | bond->primary_slave = NULL; | |
2068 | bond_change_active_slave(bond, NULL); | |
2069 | ||
2070 | while ((slave = bond->first_slave) != NULL) { | |
2071 | /* Inform AD package of unbinding of slave | |
2072 | * before slave is detached from the list. | |
2073 | */ | |
3d632c3f | 2074 | if (bond->params.mode == BOND_MODE_8023AD) |
1da177e4 | 2075 | bond_3ad_unbind_slave(slave); |
1da177e4 LT |
2076 | |
2077 | slave_dev = slave->dev; | |
2078 | bond_detach_slave(bond, slave); | |
2079 | ||
2543331d JV |
2080 | /* now that the slave is detached, unlock and perform |
2081 | * all the undo steps that should not be called from | |
2082 | * within a lock. | |
2083 | */ | |
2084 | write_unlock_bh(&bond->lock); | |
2085 | ||
58402054 | 2086 | if (bond_is_lb(bond)) { |
1da177e4 LT |
2087 | /* must be called only after the slave |
2088 | * has been detached from the list | |
2089 | */ | |
2090 | bond_alb_deinit_slave(bond, slave); | |
2091 | } | |
2092 | ||
8531c5ff AK |
2093 | bond_compute_features(bond); |
2094 | ||
b76cdba9 | 2095 | bond_destroy_slave_symlinks(bond_dev, slave_dev); |
1da177e4 LT |
2096 | bond_del_vlans_from_slave(bond, slave_dev); |
2097 | ||
2098 | /* If the mode USES_PRIMARY, then we should only remove its | |
2099 | * promisc and mc settings if it was the curr_active_slave, but that was | |
2100 | * already taken care of above when we detached the slave | |
2101 | */ | |
2102 | if (!USES_PRIMARY(bond->params.mode)) { | |
2103 | /* unset promiscuity level from slave */ | |
3d632c3f | 2104 | if (bond_dev->flags & IFF_PROMISC) |
1da177e4 | 2105 | dev_set_promiscuity(slave_dev, -1); |
1da177e4 LT |
2106 | |
2107 | /* unset allmulti level from slave */ | |
3d632c3f | 2108 | if (bond_dev->flags & IFF_ALLMULTI) |
1da177e4 | 2109 | dev_set_allmulti(slave_dev, -1); |
1da177e4 LT |
2110 | |
2111 | /* flush master's mc_list from slave */ | |
b9e40857 | 2112 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 2113 | bond_mc_list_flush(bond_dev, slave_dev); |
b9e40857 | 2114 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
2115 | } |
2116 | ||
1765a575 | 2117 | netdev_set_bond_master(slave_dev, NULL); |
1da177e4 LT |
2118 | |
2119 | /* close slave before restoring its mac address */ | |
2120 | dev_close(slave_dev); | |
2121 | ||
dd957c57 | 2122 | if (!bond->params.fail_over_mac) { |
2ab82852 MS |
2123 | /* restore original ("permanent") mac address*/ |
2124 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); | |
2125 | addr.sa_family = slave_dev->type; | |
2126 | dev_set_mac_address(slave_dev, &addr); | |
2127 | } | |
1da177e4 | 2128 | |
8f903c70 JV |
2129 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
2130 | IFF_SLAVE_INACTIVE); | |
1da177e4 LT |
2131 | |
2132 | kfree(slave); | |
2133 | ||
2134 | /* re-acquire the lock before getting the next slave */ | |
2135 | write_lock_bh(&bond->lock); | |
2136 | } | |
2137 | ||
2138 | /* zero the mac address of the master so it will be | |
2139 | * set by the application to the mac address of the | |
2140 | * first slave | |
2141 | */ | |
2142 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); | |
2143 | ||
f35188fa | 2144 | if (!bond->vlgrp) { |
1da177e4 | 2145 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
f35188fa | 2146 | } else { |
a4aee5c8 JP |
2147 | pr_warning("%s: Warning: clearing HW address of %s while it still has VLANs.\n", |
2148 | bond_dev->name, bond_dev->name); | |
2149 | pr_warning("%s: When re-adding slaves, make sure the bond's HW address matches its VLANs'.\n", | |
2150 | bond_dev->name); | |
1da177e4 LT |
2151 | } |
2152 | ||
a4aee5c8 | 2153 | pr_info("%s: released all slaves\n", bond_dev->name); |
1da177e4 LT |
2154 | |
2155 | out: | |
2156 | write_unlock_bh(&bond->lock); | |
1da177e4 LT |
2157 | return 0; |
2158 | } | |
2159 | ||
2160 | /* | |
2161 | * This function changes the active slave to slave <slave_dev>. | |
2162 | * It returns -EINVAL in the following cases. | |
2163 | * - <slave_dev> is not found in the list. | |
2164 | * - There is not active slave now. | |
2165 | * - <slave_dev> is already active. | |
2166 | * - The link state of <slave_dev> is not BOND_LINK_UP. | |
2167 | * - <slave_dev> is not running. | |
3d632c3f SH |
2168 | * In these cases, this function does nothing. |
2169 | * In the other cases, current_slave pointer is changed and 0 is returned. | |
1da177e4 LT |
2170 | */ |
2171 | static int bond_ioctl_change_active(struct net_device *bond_dev, struct net_device *slave_dev) | |
2172 | { | |
454d7c9b | 2173 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2174 | struct slave *old_active = NULL; |
2175 | struct slave *new_active = NULL; | |
2176 | int res = 0; | |
2177 | ||
3d632c3f | 2178 | if (!USES_PRIMARY(bond->params.mode)) |
1da177e4 | 2179 | return -EINVAL; |
1da177e4 LT |
2180 | |
2181 | /* Verify that master_dev is indeed the master of slave_dev */ | |
3d632c3f | 2182 | if (!(slave_dev->flags & IFF_SLAVE) || (slave_dev->master != bond_dev)) |
1da177e4 | 2183 | return -EINVAL; |
1da177e4 | 2184 | |
059fe7a5 | 2185 | read_lock(&bond->lock); |
1da177e4 | 2186 | |
059fe7a5 | 2187 | read_lock(&bond->curr_slave_lock); |
1da177e4 | 2188 | old_active = bond->curr_active_slave; |
059fe7a5 JV |
2189 | read_unlock(&bond->curr_slave_lock); |
2190 | ||
1da177e4 LT |
2191 | new_active = bond_get_slave_by_dev(bond, slave_dev); |
2192 | ||
2193 | /* | |
2194 | * Changing to the current active: do nothing; return success. | |
2195 | */ | |
2196 | if (new_active && (new_active == old_active)) { | |
059fe7a5 | 2197 | read_unlock(&bond->lock); |
1da177e4 LT |
2198 | return 0; |
2199 | } | |
2200 | ||
2201 | if ((new_active) && | |
2202 | (old_active) && | |
2203 | (new_active->link == BOND_LINK_UP) && | |
2204 | IS_UP(new_active->dev)) { | |
e843fa50 | 2205 | block_netpoll_tx(); |
059fe7a5 | 2206 | write_lock_bh(&bond->curr_slave_lock); |
1da177e4 | 2207 | bond_change_active_slave(bond, new_active); |
059fe7a5 | 2208 | write_unlock_bh(&bond->curr_slave_lock); |
e843fa50 | 2209 | unblock_netpoll_tx(); |
3d632c3f | 2210 | } else |
1da177e4 | 2211 | res = -EINVAL; |
1da177e4 | 2212 | |
059fe7a5 | 2213 | read_unlock(&bond->lock); |
1da177e4 LT |
2214 | |
2215 | return res; | |
2216 | } | |
2217 | ||
1da177e4 LT |
2218 | static int bond_info_query(struct net_device *bond_dev, struct ifbond *info) |
2219 | { | |
454d7c9b | 2220 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2221 | |
2222 | info->bond_mode = bond->params.mode; | |
2223 | info->miimon = bond->params.miimon; | |
2224 | ||
6603a6f2 | 2225 | read_lock(&bond->lock); |
1da177e4 | 2226 | info->num_slaves = bond->slave_cnt; |
6603a6f2 | 2227 | read_unlock(&bond->lock); |
1da177e4 LT |
2228 | |
2229 | return 0; | |
2230 | } | |
2231 | ||
2232 | static int bond_slave_info_query(struct net_device *bond_dev, struct ifslave *info) | |
2233 | { | |
454d7c9b | 2234 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 2235 | struct slave *slave; |
689c96cc | 2236 | int i, res = -ENODEV; |
1da177e4 | 2237 | |
6603a6f2 | 2238 | read_lock(&bond->lock); |
1da177e4 LT |
2239 | |
2240 | bond_for_each_slave(bond, slave, i) { | |
2241 | if (i == (int)info->slave_id) { | |
689c96cc ED |
2242 | res = 0; |
2243 | strcpy(info->slave_name, slave->dev->name); | |
2244 | info->link = slave->link; | |
2245 | info->state = slave->state; | |
2246 | info->link_failure_count = slave->link_failure_count; | |
1da177e4 LT |
2247 | break; |
2248 | } | |
2249 | } | |
2250 | ||
6603a6f2 | 2251 | read_unlock(&bond->lock); |
1da177e4 | 2252 | |
689c96cc | 2253 | return res; |
1da177e4 LT |
2254 | } |
2255 | ||
2256 | /*-------------------------------- Monitoring -------------------------------*/ | |
2257 | ||
1da177e4 | 2258 | |
f0c76d61 JV |
2259 | static int bond_miimon_inspect(struct bonding *bond) |
2260 | { | |
2261 | struct slave *slave; | |
2262 | int i, link_state, commit = 0; | |
41f89100 JP |
2263 | bool ignore_updelay; |
2264 | ||
2265 | ignore_updelay = !bond->curr_active_slave ? true : false; | |
1da177e4 LT |
2266 | |
2267 | bond_for_each_slave(bond, slave, i) { | |
f0c76d61 | 2268 | slave->new_link = BOND_LINK_NOCHANGE; |
1da177e4 | 2269 | |
f0c76d61 | 2270 | link_state = bond_check_dev_link(bond, slave->dev, 0); |
1da177e4 LT |
2271 | |
2272 | switch (slave->link) { | |
f0c76d61 JV |
2273 | case BOND_LINK_UP: |
2274 | if (link_state) | |
2275 | continue; | |
1da177e4 | 2276 | |
f0c76d61 JV |
2277 | slave->link = BOND_LINK_FAIL; |
2278 | slave->delay = bond->params.downdelay; | |
2279 | if (slave->delay) { | |
a4aee5c8 JP |
2280 | pr_info("%s: link status down for %sinterface %s, disabling it in %d ms.\n", |
2281 | bond->dev->name, | |
2282 | (bond->params.mode == | |
2283 | BOND_MODE_ACTIVEBACKUP) ? | |
2284 | ((slave->state == BOND_STATE_ACTIVE) ? | |
2285 | "active " : "backup ") : "", | |
2286 | slave->dev->name, | |
2287 | bond->params.downdelay * bond->params.miimon); | |
1da177e4 | 2288 | } |
f0c76d61 JV |
2289 | /*FALLTHRU*/ |
2290 | case BOND_LINK_FAIL: | |
2291 | if (link_state) { | |
2292 | /* | |
2293 | * recovered before downdelay expired | |
2294 | */ | |
2295 | slave->link = BOND_LINK_UP; | |
1da177e4 | 2296 | slave->jiffies = jiffies; |
a4aee5c8 JP |
2297 | pr_info("%s: link status up again after %d ms for interface %s.\n", |
2298 | bond->dev->name, | |
2299 | (bond->params.downdelay - slave->delay) * | |
2300 | bond->params.miimon, | |
2301 | slave->dev->name); | |
f0c76d61 | 2302 | continue; |
1da177e4 | 2303 | } |
f0c76d61 JV |
2304 | |
2305 | if (slave->delay <= 0) { | |
2306 | slave->new_link = BOND_LINK_DOWN; | |
2307 | commit++; | |
2308 | continue; | |
1da177e4 | 2309 | } |
1da177e4 | 2310 | |
f0c76d61 JV |
2311 | slave->delay--; |
2312 | break; | |
2313 | ||
2314 | case BOND_LINK_DOWN: | |
2315 | if (!link_state) | |
2316 | continue; | |
2317 | ||
2318 | slave->link = BOND_LINK_BACK; | |
2319 | slave->delay = bond->params.updelay; | |
2320 | ||
2321 | if (slave->delay) { | |
a4aee5c8 JP |
2322 | pr_info("%s: link status up for interface %s, enabling it in %d ms.\n", |
2323 | bond->dev->name, slave->dev->name, | |
2324 | ignore_updelay ? 0 : | |
2325 | bond->params.updelay * | |
2326 | bond->params.miimon); | |
f0c76d61 JV |
2327 | } |
2328 | /*FALLTHRU*/ | |
2329 | case BOND_LINK_BACK: | |
2330 | if (!link_state) { | |
2331 | slave->link = BOND_LINK_DOWN; | |
a4aee5c8 JP |
2332 | pr_info("%s: link status down again after %d ms for interface %s.\n", |
2333 | bond->dev->name, | |
2334 | (bond->params.updelay - slave->delay) * | |
2335 | bond->params.miimon, | |
2336 | slave->dev->name); | |
f0c76d61 JV |
2337 | |
2338 | continue; | |
2339 | } | |
2340 | ||
41f89100 JP |
2341 | if (ignore_updelay) |
2342 | slave->delay = 0; | |
2343 | ||
f0c76d61 JV |
2344 | if (slave->delay <= 0) { |
2345 | slave->new_link = BOND_LINK_UP; | |
2346 | commit++; | |
41f89100 | 2347 | ignore_updelay = false; |
f0c76d61 | 2348 | continue; |
1da177e4 | 2349 | } |
f0c76d61 JV |
2350 | |
2351 | slave->delay--; | |
1da177e4 | 2352 | break; |
f0c76d61 JV |
2353 | } |
2354 | } | |
1da177e4 | 2355 | |
f0c76d61 JV |
2356 | return commit; |
2357 | } | |
1da177e4 | 2358 | |
f0c76d61 JV |
2359 | static void bond_miimon_commit(struct bonding *bond) |
2360 | { | |
2361 | struct slave *slave; | |
2362 | int i; | |
2363 | ||
2364 | bond_for_each_slave(bond, slave, i) { | |
2365 | switch (slave->new_link) { | |
2366 | case BOND_LINK_NOCHANGE: | |
2367 | continue; | |
1da177e4 | 2368 | |
f0c76d61 JV |
2369 | case BOND_LINK_UP: |
2370 | slave->link = BOND_LINK_UP; | |
2371 | slave->jiffies = jiffies; | |
2372 | ||
2373 | if (bond->params.mode == BOND_MODE_8023AD) { | |
2374 | /* prevent it from being the active one */ | |
2375 | slave->state = BOND_STATE_BACKUP; | |
2376 | } else if (bond->params.mode != BOND_MODE_ACTIVEBACKUP) { | |
2377 | /* make it immediately active */ | |
2378 | slave->state = BOND_STATE_ACTIVE; | |
2379 | } else if (slave != bond->primary_slave) { | |
2380 | /* prevent it from being the active one */ | |
2381 | slave->state = BOND_STATE_BACKUP; | |
1da177e4 | 2382 | } |
1da177e4 | 2383 | |
546add79 KPO |
2384 | bond_update_speed_duplex(slave); |
2385 | ||
700c2a77 KPO |
2386 | pr_info("%s: link status definitely up for interface %s, %d Mbps %s duplex.\n", |
2387 | bond->dev->name, slave->dev->name, | |
2388 | slave->speed, slave->duplex ? "full" : "half"); | |
1da177e4 | 2389 | |
f0c76d61 JV |
2390 | /* notify ad that the link status has changed */ |
2391 | if (bond->params.mode == BOND_MODE_8023AD) | |
2392 | bond_3ad_handle_link_change(slave, BOND_LINK_UP); | |
059fe7a5 | 2393 | |
58402054 | 2394 | if (bond_is_lb(bond)) |
f0c76d61 JV |
2395 | bond_alb_handle_link_change(bond, slave, |
2396 | BOND_LINK_UP); | |
1da177e4 | 2397 | |
f0c76d61 JV |
2398 | if (!bond->curr_active_slave || |
2399 | (slave == bond->primary_slave)) | |
2400 | goto do_failover; | |
1da177e4 | 2401 | |
f0c76d61 | 2402 | continue; |
059fe7a5 | 2403 | |
f0c76d61 | 2404 | case BOND_LINK_DOWN: |
fba4acda JV |
2405 | if (slave->link_failure_count < UINT_MAX) |
2406 | slave->link_failure_count++; | |
2407 | ||
f0c76d61 | 2408 | slave->link = BOND_LINK_DOWN; |
1da177e4 | 2409 | |
f0c76d61 JV |
2410 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP || |
2411 | bond->params.mode == BOND_MODE_8023AD) | |
2412 | bond_set_slave_inactive_flags(slave); | |
2413 | ||
a4aee5c8 JP |
2414 | pr_info("%s: link status definitely down for interface %s, disabling it\n", |
2415 | bond->dev->name, slave->dev->name); | |
f0c76d61 JV |
2416 | |
2417 | if (bond->params.mode == BOND_MODE_8023AD) | |
2418 | bond_3ad_handle_link_change(slave, | |
2419 | BOND_LINK_DOWN); | |
2420 | ||
ae63e808 | 2421 | if (bond_is_lb(bond)) |
f0c76d61 JV |
2422 | bond_alb_handle_link_change(bond, slave, |
2423 | BOND_LINK_DOWN); | |
2424 | ||
2425 | if (slave == bond->curr_active_slave) | |
2426 | goto do_failover; | |
2427 | ||
2428 | continue; | |
2429 | ||
2430 | default: | |
a4aee5c8 | 2431 | pr_err("%s: invalid new link %d on slave %s\n", |
f0c76d61 JV |
2432 | bond->dev->name, slave->new_link, |
2433 | slave->dev->name); | |
2434 | slave->new_link = BOND_LINK_NOCHANGE; | |
2435 | ||
2436 | continue; | |
2437 | } | |
2438 | ||
2439 | do_failover: | |
2440 | ASSERT_RTNL(); | |
e843fa50 | 2441 | block_netpoll_tx(); |
f0c76d61 JV |
2442 | write_lock_bh(&bond->curr_slave_lock); |
2443 | bond_select_active_slave(bond); | |
2444 | write_unlock_bh(&bond->curr_slave_lock); | |
e843fa50 | 2445 | unblock_netpoll_tx(); |
f0c76d61 JV |
2446 | } |
2447 | ||
2448 | bond_set_carrier(bond); | |
1da177e4 LT |
2449 | } |
2450 | ||
0b0eef66 JV |
2451 | /* |
2452 | * bond_mii_monitor | |
2453 | * | |
2454 | * Really a wrapper that splits the mii monitor into two phases: an | |
f0c76d61 JV |
2455 | * inspection, then (if inspection indicates something needs to be done) |
2456 | * an acquisition of appropriate locks followed by a commit phase to | |
2457 | * implement whatever link state changes are indicated. | |
0b0eef66 JV |
2458 | */ |
2459 | void bond_mii_monitor(struct work_struct *work) | |
2460 | { | |
2461 | struct bonding *bond = container_of(work, struct bonding, | |
2462 | mii_work.work); | |
0b0eef66 JV |
2463 | |
2464 | read_lock(&bond->lock); | |
f0c76d61 JV |
2465 | if (bond->kill_timers) |
2466 | goto out; | |
2467 | ||
2468 | if (bond->slave_cnt == 0) | |
2469 | goto re_arm; | |
b59f9f74 JV |
2470 | |
2471 | if (bond->send_grat_arp) { | |
2472 | read_lock(&bond->curr_slave_lock); | |
2473 | bond_send_gratuitous_arp(bond); | |
2474 | read_unlock(&bond->curr_slave_lock); | |
2475 | } | |
2476 | ||
305d552a BH |
2477 | if (bond->send_unsol_na) { |
2478 | read_lock(&bond->curr_slave_lock); | |
2479 | bond_send_unsolicited_na(bond); | |
2480 | read_unlock(&bond->curr_slave_lock); | |
2481 | } | |
2482 | ||
f0c76d61 | 2483 | if (bond_miimon_inspect(bond)) { |
0b0eef66 JV |
2484 | read_unlock(&bond->lock); |
2485 | rtnl_lock(); | |
2486 | read_lock(&bond->lock); | |
f0c76d61 JV |
2487 | |
2488 | bond_miimon_commit(bond); | |
2489 | ||
5655662d JV |
2490 | read_unlock(&bond->lock); |
2491 | rtnl_unlock(); /* might sleep, hold no other locks */ | |
2492 | read_lock(&bond->lock); | |
0b0eef66 JV |
2493 | } |
2494 | ||
f0c76d61 JV |
2495 | re_arm: |
2496 | if (bond->params.miimon) | |
2497 | queue_delayed_work(bond->wq, &bond->mii_work, | |
2498 | msecs_to_jiffies(bond->params.miimon)); | |
2499 | out: | |
0b0eef66 | 2500 | read_unlock(&bond->lock); |
0b0eef66 | 2501 | } |
c3ade5ca | 2502 | |
d3bb52b0 | 2503 | static __be32 bond_glean_dev_ip(struct net_device *dev) |
c3ade5ca JV |
2504 | { |
2505 | struct in_device *idev; | |
2506 | struct in_ifaddr *ifa; | |
a144ea4b | 2507 | __be32 addr = 0; |
c3ade5ca JV |
2508 | |
2509 | if (!dev) | |
2510 | return 0; | |
2511 | ||
2512 | rcu_read_lock(); | |
e5ed6399 | 2513 | idev = __in_dev_get_rcu(dev); |
c3ade5ca JV |
2514 | if (!idev) |
2515 | goto out; | |
2516 | ||
2517 | ifa = idev->ifa_list; | |
2518 | if (!ifa) | |
2519 | goto out; | |
2520 | ||
2521 | addr = ifa->ifa_local; | |
2522 | out: | |
2523 | rcu_read_unlock(); | |
2524 | return addr; | |
2525 | } | |
2526 | ||
d3bb52b0 | 2527 | static int bond_has_this_ip(struct bonding *bond, __be32 ip) |
f5b2b966 | 2528 | { |
0883beca | 2529 | struct vlan_entry *vlan; |
f5b2b966 JV |
2530 | |
2531 | if (ip == bond->master_ip) | |
2532 | return 1; | |
2533 | ||
0883beca | 2534 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
f5b2b966 JV |
2535 | if (ip == vlan->vlan_ip) |
2536 | return 1; | |
2537 | } | |
2538 | ||
2539 | return 0; | |
2540 | } | |
2541 | ||
c3ade5ca JV |
2542 | /* |
2543 | * We go to the (large) trouble of VLAN tagging ARP frames because | |
2544 | * switches in VLAN mode (especially if ports are configured as | |
2545 | * "native" to a VLAN) might not pass non-tagged frames. | |
2546 | */ | |
d3bb52b0 | 2547 | 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 |
2548 | { |
2549 | struct sk_buff *skb; | |
2550 | ||
5a03cdb7 | 2551 | pr_debug("arp %d on slave %s: dst %x src %x vid %d\n", arp_op, |
a4aee5c8 | 2552 | slave_dev->name, dest_ip, src_ip, vlan_id); |
3d632c3f | 2553 | |
c3ade5ca JV |
2554 | skb = arp_create(arp_op, ETH_P_ARP, dest_ip, slave_dev, src_ip, |
2555 | NULL, slave_dev->dev_addr, NULL); | |
2556 | ||
2557 | if (!skb) { | |
a4aee5c8 | 2558 | pr_err("ARP packet allocation failed\n"); |
c3ade5ca JV |
2559 | return; |
2560 | } | |
2561 | if (vlan_id) { | |
2562 | skb = vlan_put_tag(skb, vlan_id); | |
2563 | if (!skb) { | |
a4aee5c8 | 2564 | pr_err("failed to insert VLAN tag\n"); |
c3ade5ca JV |
2565 | return; |
2566 | } | |
2567 | } | |
2568 | arp_xmit(skb); | |
2569 | } | |
2570 | ||
2571 | ||
1da177e4 LT |
2572 | static void bond_arp_send_all(struct bonding *bond, struct slave *slave) |
2573 | { | |
c3ade5ca | 2574 | int i, vlan_id, rv; |
d3bb52b0 | 2575 | __be32 *targets = bond->params.arp_targets; |
0883beca | 2576 | struct vlan_entry *vlan; |
c3ade5ca JV |
2577 | struct net_device *vlan_dev; |
2578 | struct flowi fl; | |
2579 | struct rtable *rt; | |
1da177e4 | 2580 | |
6b780567 MW |
2581 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
2582 | if (!targets[i]) | |
5a31bec0 | 2583 | break; |
5a03cdb7 | 2584 | pr_debug("basa: target %x\n", targets[i]); |
f35188fa | 2585 | if (!bond->vlgrp) { |
5a03cdb7 | 2586 | pr_debug("basa: empty vlan: arp_send\n"); |
c3ade5ca JV |
2587 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2588 | bond->master_ip, 0); | |
2589 | continue; | |
2590 | } | |
2591 | ||
2592 | /* | |
2593 | * If VLANs are configured, we do a route lookup to | |
2594 | * determine which VLAN interface would be used, so we | |
2595 | * can tag the ARP with the proper VLAN tag. | |
2596 | */ | |
2597 | memset(&fl, 0, sizeof(fl)); | |
2598 | fl.fl4_dst = targets[i]; | |
2599 | fl.fl4_tos = RTO_ONLINK; | |
2600 | ||
ec87fd3b | 2601 | rv = ip_route_output_key(dev_net(bond->dev), &rt, &fl); |
c3ade5ca JV |
2602 | if (rv) { |
2603 | if (net_ratelimit()) { | |
a4aee5c8 JP |
2604 | pr_warning("%s: no route to arp_ip_target %pI4\n", |
2605 | bond->dev->name, &fl.fl4_dst); | |
c3ade5ca JV |
2606 | } |
2607 | continue; | |
2608 | } | |
2609 | ||
2610 | /* | |
2611 | * This target is not on a VLAN | |
2612 | */ | |
d8d1f30b | 2613 | if (rt->dst.dev == bond->dev) { |
ed4b9f80 | 2614 | ip_rt_put(rt); |
5a03cdb7 | 2615 | pr_debug("basa: rtdev == bond->dev: arp_send\n"); |
c3ade5ca JV |
2616 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2617 | bond->master_ip, 0); | |
2618 | continue; | |
2619 | } | |
2620 | ||
2621 | vlan_id = 0; | |
0883beca | 2622 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
5c15bdec | 2623 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
d8d1f30b | 2624 | if (vlan_dev == rt->dst.dev) { |
c3ade5ca | 2625 | vlan_id = vlan->vlan_id; |
5a03cdb7 | 2626 | pr_debug("basa: vlan match on %s %d\n", |
c3ade5ca JV |
2627 | vlan_dev->name, vlan_id); |
2628 | break; | |
2629 | } | |
2630 | } | |
2631 | ||
2632 | if (vlan_id) { | |
ed4b9f80 | 2633 | ip_rt_put(rt); |
c3ade5ca JV |
2634 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2635 | vlan->vlan_ip, vlan_id); | |
2636 | continue; | |
2637 | } | |
2638 | ||
2639 | if (net_ratelimit()) { | |
a4aee5c8 JP |
2640 | pr_warning("%s: no path to arp_ip_target %pI4 via rt.dev %s\n", |
2641 | bond->dev->name, &fl.fl4_dst, | |
d8d1f30b | 2642 | rt->dst.dev ? rt->dst.dev->name : "NULL"); |
c3ade5ca | 2643 | } |
ed4b9f80 | 2644 | ip_rt_put(rt); |
c3ade5ca JV |
2645 | } |
2646 | } | |
2647 | ||
2648 | /* | |
2649 | * Kick out a gratuitous ARP for an IP on the bonding master plus one | |
2650 | * for each VLAN above us. | |
b59f9f74 JV |
2651 | * |
2652 | * Caller must hold curr_slave_lock for read or better | |
c3ade5ca JV |
2653 | */ |
2654 | static void bond_send_gratuitous_arp(struct bonding *bond) | |
2655 | { | |
2656 | struct slave *slave = bond->curr_active_slave; | |
2657 | struct vlan_entry *vlan; | |
2658 | struct net_device *vlan_dev; | |
2659 | ||
a4aee5c8 JP |
2660 | pr_debug("bond_send_grat_arp: bond %s slave %s\n", |
2661 | bond->dev->name, slave ? slave->dev->name : "NULL"); | |
b59f9f74 JV |
2662 | |
2663 | if (!slave || !bond->send_grat_arp || | |
2664 | test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state)) | |
c3ade5ca JV |
2665 | return; |
2666 | ||
b59f9f74 JV |
2667 | bond->send_grat_arp--; |
2668 | ||
c3ade5ca JV |
2669 | if (bond->master_ip) { |
2670 | bond_arp_send(slave->dev, ARPOP_REPLY, bond->master_ip, | |
1053f62c | 2671 | bond->master_ip, 0); |
c3ade5ca JV |
2672 | } |
2673 | ||
f35188fa JV |
2674 | if (!bond->vlgrp) |
2675 | return; | |
2676 | ||
c3ade5ca | 2677 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
5c15bdec | 2678 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
2679 | if (vlan->vlan_ip) { |
2680 | bond_arp_send(slave->dev, ARPOP_REPLY, vlan->vlan_ip, | |
2681 | vlan->vlan_ip, vlan->vlan_id); | |
2682 | } | |
1da177e4 LT |
2683 | } |
2684 | } | |
2685 | ||
d3bb52b0 | 2686 | static void bond_validate_arp(struct bonding *bond, struct slave *slave, __be32 sip, __be32 tip) |
f5b2b966 JV |
2687 | { |
2688 | int i; | |
d3bb52b0 | 2689 | __be32 *targets = bond->params.arp_targets; |
f5b2b966 | 2690 | |
f5b2b966 | 2691 | for (i = 0; (i < BOND_MAX_ARP_TARGETS) && targets[i]; i++) { |
5a03cdb7 | 2692 | pr_debug("bva: sip %pI4 tip %pI4 t[%d] %pI4 bhti(tip) %d\n", |
a4aee5c8 JP |
2693 | &sip, &tip, i, &targets[i], |
2694 | bond_has_this_ip(bond, tip)); | |
f5b2b966 JV |
2695 | if (sip == targets[i]) { |
2696 | if (bond_has_this_ip(bond, tip)) | |
2697 | slave->last_arp_rx = jiffies; | |
2698 | return; | |
2699 | } | |
2700 | } | |
2701 | } | |
2702 | ||
2703 | static int bond_arp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev) | |
2704 | { | |
2705 | struct arphdr *arp; | |
2706 | struct slave *slave; | |
2707 | struct bonding *bond; | |
2708 | unsigned char *arp_ptr; | |
d3bb52b0 | 2709 | __be32 sip, tip; |
f5b2b966 | 2710 | |
1f3c8804 AG |
2711 | if (dev->priv_flags & IFF_802_1Q_VLAN) { |
2712 | /* | |
2713 | * When using VLANS and bonding, dev and oriv_dev may be | |
2714 | * incorrect if the physical interface supports VLAN | |
2715 | * acceleration. With this change ARP validation now | |
2716 | * works for hosts only reachable on the VLAN interface. | |
2717 | */ | |
2718 | dev = vlan_dev_real_dev(dev); | |
2719 | orig_dev = dev_get_by_index_rcu(dev_net(skb->dev),skb->skb_iif); | |
2720 | } | |
2721 | ||
f5b2b966 JV |
2722 | if (!(dev->priv_flags & IFF_BONDING) || !(dev->flags & IFF_MASTER)) |
2723 | goto out; | |
2724 | ||
454d7c9b | 2725 | bond = netdev_priv(dev); |
f5b2b966 JV |
2726 | read_lock(&bond->lock); |
2727 | ||
5a03cdb7 | 2728 | pr_debug("bond_arp_rcv: bond %s skb->dev %s orig_dev %s\n", |
a4aee5c8 JP |
2729 | bond->dev->name, skb->dev ? skb->dev->name : "NULL", |
2730 | orig_dev ? orig_dev->name : "NULL"); | |
f5b2b966 JV |
2731 | |
2732 | slave = bond_get_slave_by_dev(bond, orig_dev); | |
2733 | if (!slave || !slave_do_arp_validate(bond, slave)) | |
2734 | goto out_unlock; | |
2735 | ||
b3053251 NH |
2736 | skb = skb_share_check(skb, GFP_ATOMIC); |
2737 | if (!skb) | |
2738 | goto out_unlock; | |
2739 | ||
988b7050 | 2740 | if (!pskb_may_pull(skb, arp_hdr_len(dev))) |
f5b2b966 JV |
2741 | goto out_unlock; |
2742 | ||
d0a92be0 | 2743 | arp = arp_hdr(skb); |
f5b2b966 JV |
2744 | if (arp->ar_hln != dev->addr_len || |
2745 | skb->pkt_type == PACKET_OTHERHOST || | |
2746 | skb->pkt_type == PACKET_LOOPBACK || | |
2747 | arp->ar_hrd != htons(ARPHRD_ETHER) || | |
2748 | arp->ar_pro != htons(ETH_P_IP) || | |
2749 | arp->ar_pln != 4) | |
2750 | goto out_unlock; | |
2751 | ||
2752 | arp_ptr = (unsigned char *)(arp + 1); | |
2753 | arp_ptr += dev->addr_len; | |
2754 | memcpy(&sip, arp_ptr, 4); | |
2755 | arp_ptr += 4 + dev->addr_len; | |
2756 | memcpy(&tip, arp_ptr, 4); | |
2757 | ||
5a03cdb7 | 2758 | pr_debug("bond_arp_rcv: %s %s/%d av %d sv %d sip %pI4 tip %pI4\n", |
a4aee5c8 JP |
2759 | bond->dev->name, slave->dev->name, slave->state, |
2760 | bond->params.arp_validate, slave_do_arp_validate(bond, slave), | |
2761 | &sip, &tip); | |
f5b2b966 JV |
2762 | |
2763 | /* | |
2764 | * Backup slaves won't see the ARP reply, but do come through | |
2765 | * here for each ARP probe (so we swap the sip/tip to validate | |
2766 | * the probe). In a "redundant switch, common router" type of | |
2767 | * configuration, the ARP probe will (hopefully) travel from | |
2768 | * the active, through one switch, the router, then the other | |
2769 | * switch before reaching the backup. | |
2770 | */ | |
2771 | if (slave->state == BOND_STATE_ACTIVE) | |
2772 | bond_validate_arp(bond, slave, sip, tip); | |
2773 | else | |
2774 | bond_validate_arp(bond, slave, tip, sip); | |
2775 | ||
2776 | out_unlock: | |
2777 | read_unlock(&bond->lock); | |
2778 | out: | |
2779 | dev_kfree_skb(skb); | |
2780 | return NET_RX_SUCCESS; | |
2781 | } | |
2782 | ||
1da177e4 LT |
2783 | /* |
2784 | * this function is called regularly to monitor each slave's link | |
2785 | * ensuring that traffic is being sent and received when arp monitoring | |
2786 | * is used in load-balancing mode. if the adapter has been dormant, then an | |
2787 | * arp is transmitted to generate traffic. see activebackup_arp_monitor for | |
2788 | * arp monitoring in active backup mode. | |
2789 | */ | |
1b76b316 | 2790 | void bond_loadbalance_arp_mon(struct work_struct *work) |
1da177e4 | 2791 | { |
1b76b316 JV |
2792 | struct bonding *bond = container_of(work, struct bonding, |
2793 | arp_work.work); | |
1da177e4 LT |
2794 | struct slave *slave, *oldcurrent; |
2795 | int do_failover = 0; | |
2796 | int delta_in_ticks; | |
2797 | int i; | |
2798 | ||
2799 | read_lock(&bond->lock); | |
2800 | ||
5ce0da8f | 2801 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
1da177e4 | 2802 | |
3d632c3f | 2803 | if (bond->kill_timers) |
1da177e4 | 2804 | goto out; |
1da177e4 | 2805 | |
3d632c3f | 2806 | if (bond->slave_cnt == 0) |
1da177e4 | 2807 | goto re_arm; |
1da177e4 LT |
2808 | |
2809 | read_lock(&bond->curr_slave_lock); | |
2810 | oldcurrent = bond->curr_active_slave; | |
2811 | read_unlock(&bond->curr_slave_lock); | |
2812 | ||
2813 | /* see if any of the previous devices are up now (i.e. they have | |
2814 | * xmt and rcv traffic). the curr_active_slave does not come into | |
2815 | * the picture unless it is null. also, slave->jiffies is not needed | |
2816 | * here because we send an arp on each slave and give a slave as | |
2817 | * long as it needs to get the tx/rx within the delta. | |
2818 | * TODO: what about up/down delay in arp mode? it wasn't here before | |
2819 | * so it can wait | |
2820 | */ | |
2821 | bond_for_each_slave(bond, slave, i) { | |
cb32f2a0 JB |
2822 | unsigned long trans_start = dev_trans_start(slave->dev); |
2823 | ||
1da177e4 | 2824 | if (slave->link != BOND_LINK_UP) { |
cb32f2a0 JB |
2825 | if (time_in_range(jiffies, |
2826 | trans_start - delta_in_ticks, | |
2827 | trans_start + delta_in_ticks) && | |
2828 | time_in_range(jiffies, | |
2829 | slave->dev->last_rx - delta_in_ticks, | |
2830 | slave->dev->last_rx + delta_in_ticks)) { | |
1da177e4 LT |
2831 | |
2832 | slave->link = BOND_LINK_UP; | |
2833 | slave->state = BOND_STATE_ACTIVE; | |
2834 | ||
2835 | /* primary_slave has no meaning in round-robin | |
2836 | * mode. the window of a slave being up and | |
2837 | * curr_active_slave being null after enslaving | |
2838 | * is closed. | |
2839 | */ | |
2840 | if (!oldcurrent) { | |
a4aee5c8 JP |
2841 | pr_info("%s: link status definitely up for interface %s, ", |
2842 | bond->dev->name, | |
2843 | slave->dev->name); | |
1da177e4 LT |
2844 | do_failover = 1; |
2845 | } else { | |
a4aee5c8 JP |
2846 | pr_info("%s: interface %s is now up\n", |
2847 | bond->dev->name, | |
2848 | slave->dev->name); | |
1da177e4 LT |
2849 | } |
2850 | } | |
2851 | } else { | |
2852 | /* slave->link == BOND_LINK_UP */ | |
2853 | ||
2854 | /* not all switches will respond to an arp request | |
2855 | * when the source ip is 0, so don't take the link down | |
2856 | * if we don't know our ip yet | |
2857 | */ | |
cb32f2a0 JB |
2858 | if (!time_in_range(jiffies, |
2859 | trans_start - delta_in_ticks, | |
2860 | trans_start + 2 * delta_in_ticks) || | |
2861 | !time_in_range(jiffies, | |
2862 | slave->dev->last_rx - delta_in_ticks, | |
2863 | slave->dev->last_rx + 2 * delta_in_ticks)) { | |
1da177e4 LT |
2864 | |
2865 | slave->link = BOND_LINK_DOWN; | |
2866 | slave->state = BOND_STATE_BACKUP; | |
2867 | ||
3d632c3f | 2868 | if (slave->link_failure_count < UINT_MAX) |
1da177e4 | 2869 | slave->link_failure_count++; |
1da177e4 | 2870 | |
a4aee5c8 JP |
2871 | pr_info("%s: interface %s is now down.\n", |
2872 | bond->dev->name, | |
2873 | slave->dev->name); | |
1da177e4 | 2874 | |
3d632c3f | 2875 | if (slave == oldcurrent) |
1da177e4 | 2876 | do_failover = 1; |
1da177e4 LT |
2877 | } |
2878 | } | |
2879 | ||
2880 | /* note: if switch is in round-robin mode, all links | |
2881 | * must tx arp to ensure all links rx an arp - otherwise | |
2882 | * links may oscillate or not come up at all; if switch is | |
2883 | * in something like xor mode, there is nothing we can | |
2884 | * do - all replies will be rx'ed on same link causing slaves | |
2885 | * to be unstable during low/no traffic periods | |
2886 | */ | |
3d632c3f | 2887 | if (IS_UP(slave->dev)) |
1da177e4 | 2888 | bond_arp_send_all(bond, slave); |
1da177e4 LT |
2889 | } |
2890 | ||
2891 | if (do_failover) { | |
e843fa50 | 2892 | block_netpoll_tx(); |
059fe7a5 | 2893 | write_lock_bh(&bond->curr_slave_lock); |
1da177e4 LT |
2894 | |
2895 | bond_select_active_slave(bond); | |
2896 | ||
059fe7a5 | 2897 | write_unlock_bh(&bond->curr_slave_lock); |
e843fa50 | 2898 | unblock_netpoll_tx(); |
1da177e4 LT |
2899 | } |
2900 | ||
2901 | re_arm: | |
1b76b316 JV |
2902 | if (bond->params.arp_interval) |
2903 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); | |
1da177e4 LT |
2904 | out: |
2905 | read_unlock(&bond->lock); | |
2906 | } | |
2907 | ||
2908 | /* | |
b2220cad JV |
2909 | * Called to inspect slaves for active-backup mode ARP monitor link state |
2910 | * changes. Sets new_link in slaves to specify what action should take | |
2911 | * place for the slave. Returns 0 if no changes are found, >0 if changes | |
2912 | * to link states must be committed. | |
2913 | * | |
2914 | * Called with bond->lock held for read. | |
1da177e4 | 2915 | */ |
b2220cad | 2916 | static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks) |
1da177e4 | 2917 | { |
1da177e4 | 2918 | struct slave *slave; |
b2220cad | 2919 | int i, commit = 0; |
cb32f2a0 | 2920 | unsigned long trans_start; |
1da177e4 | 2921 | |
b2220cad JV |
2922 | bond_for_each_slave(bond, slave, i) { |
2923 | slave->new_link = BOND_LINK_NOCHANGE; | |
1da177e4 | 2924 | |
b2220cad | 2925 | if (slave->link != BOND_LINK_UP) { |
cb32f2a0 JB |
2926 | if (time_in_range(jiffies, |
2927 | slave_last_rx(bond, slave) - delta_in_ticks, | |
2928 | slave_last_rx(bond, slave) + delta_in_ticks)) { | |
2929 | ||
b2220cad JV |
2930 | slave->new_link = BOND_LINK_UP; |
2931 | commit++; | |
2932 | } | |
1da177e4 | 2933 | |
b2220cad JV |
2934 | continue; |
2935 | } | |
1da177e4 | 2936 | |
b2220cad JV |
2937 | /* |
2938 | * Give slaves 2*delta after being enslaved or made | |
2939 | * active. This avoids bouncing, as the last receive | |
2940 | * times need a full ARP monitor cycle to be updated. | |
2941 | */ | |
cb32f2a0 JB |
2942 | if (time_in_range(jiffies, |
2943 | slave->jiffies - delta_in_ticks, | |
2944 | slave->jiffies + 2 * delta_in_ticks)) | |
b2220cad JV |
2945 | continue; |
2946 | ||
2947 | /* | |
2948 | * Backup slave is down if: | |
2949 | * - No current_arp_slave AND | |
2950 | * - more than 3*delta since last receive AND | |
2951 | * - the bond has an IP address | |
2952 | * | |
2953 | * Note: a non-null current_arp_slave indicates | |
2954 | * the curr_active_slave went down and we are | |
2955 | * searching for a new one; under this condition | |
2956 | * we only take the curr_active_slave down - this | |
2957 | * gives each slave a chance to tx/rx traffic | |
2958 | * before being taken out | |
2959 | */ | |
2960 | if (slave->state == BOND_STATE_BACKUP && | |
2961 | !bond->current_arp_slave && | |
cb32f2a0 JB |
2962 | !time_in_range(jiffies, |
2963 | slave_last_rx(bond, slave) - delta_in_ticks, | |
2964 | slave_last_rx(bond, slave) + 3 * delta_in_ticks)) { | |
2965 | ||
b2220cad JV |
2966 | slave->new_link = BOND_LINK_DOWN; |
2967 | commit++; | |
2968 | } | |
2969 | ||
2970 | /* | |
2971 | * Active slave is down if: | |
2972 | * - more than 2*delta since transmitting OR | |
2973 | * - (more than 2*delta since receive AND | |
2974 | * the bond has an IP address) | |
2975 | */ | |
cb32f2a0 | 2976 | trans_start = dev_trans_start(slave->dev); |
b2220cad | 2977 | if ((slave->state == BOND_STATE_ACTIVE) && |
cb32f2a0 JB |
2978 | (!time_in_range(jiffies, |
2979 | trans_start - delta_in_ticks, | |
2980 | trans_start + 2 * delta_in_ticks) || | |
2981 | !time_in_range(jiffies, | |
2982 | slave_last_rx(bond, slave) - delta_in_ticks, | |
2983 | slave_last_rx(bond, slave) + 2 * delta_in_ticks))) { | |
2984 | ||
b2220cad JV |
2985 | slave->new_link = BOND_LINK_DOWN; |
2986 | commit++; | |
2987 | } | |
1da177e4 LT |
2988 | } |
2989 | ||
b2220cad JV |
2990 | return commit; |
2991 | } | |
1da177e4 | 2992 | |
b2220cad JV |
2993 | /* |
2994 | * Called to commit link state changes noted by inspection step of | |
2995 | * active-backup mode ARP monitor. | |
2996 | * | |
2997 | * Called with RTNL and bond->lock for read. | |
2998 | */ | |
2999 | static void bond_ab_arp_commit(struct bonding *bond, int delta_in_ticks) | |
3000 | { | |
3001 | struct slave *slave; | |
3002 | int i; | |
cb32f2a0 | 3003 | unsigned long trans_start; |
1da177e4 | 3004 | |
b2220cad JV |
3005 | bond_for_each_slave(bond, slave, i) { |
3006 | switch (slave->new_link) { | |
3007 | case BOND_LINK_NOCHANGE: | |
3008 | continue; | |
ff59c456 | 3009 | |
b2220cad | 3010 | case BOND_LINK_UP: |
cb32f2a0 | 3011 | trans_start = dev_trans_start(slave->dev); |
b9f60253 | 3012 | if ((!bond->curr_active_slave && |
cb32f2a0 JB |
3013 | time_in_range(jiffies, |
3014 | trans_start - delta_in_ticks, | |
3015 | trans_start + delta_in_ticks)) || | |
b9f60253 | 3016 | bond->curr_active_slave != slave) { |
b2220cad | 3017 | slave->link = BOND_LINK_UP; |
b2220cad JV |
3018 | bond->current_arp_slave = NULL; |
3019 | ||
a4aee5c8 | 3020 | pr_info("%s: link status definitely up for interface %s.\n", |
b9f60253 | 3021 | bond->dev->name, slave->dev->name); |
b2220cad | 3022 | |
b9f60253 JP |
3023 | if (!bond->curr_active_slave || |
3024 | (slave == bond->primary_slave)) | |
3025 | goto do_failover; | |
1da177e4 | 3026 | |
b9f60253 | 3027 | } |
1da177e4 | 3028 | |
b9f60253 | 3029 | continue; |
1da177e4 | 3030 | |
b2220cad JV |
3031 | case BOND_LINK_DOWN: |
3032 | if (slave->link_failure_count < UINT_MAX) | |
3033 | slave->link_failure_count++; | |
3034 | ||
3035 | slave->link = BOND_LINK_DOWN; | |
b9f60253 | 3036 | bond_set_slave_inactive_flags(slave); |
b2220cad | 3037 | |
a4aee5c8 | 3038 | pr_info("%s: link status definitely down for interface %s, disabling it\n", |
b9f60253 | 3039 | bond->dev->name, slave->dev->name); |
b2220cad | 3040 | |
b9f60253 | 3041 | if (slave == bond->curr_active_slave) { |
b2220cad | 3042 | bond->current_arp_slave = NULL; |
b9f60253 | 3043 | goto do_failover; |
1da177e4 | 3044 | } |
b9f60253 JP |
3045 | |
3046 | continue; | |
b2220cad JV |
3047 | |
3048 | default: | |
a4aee5c8 | 3049 | pr_err("%s: impossible: new_link %d on slave %s\n", |
b2220cad JV |
3050 | bond->dev->name, slave->new_link, |
3051 | slave->dev->name); | |
b9f60253 | 3052 | continue; |
1da177e4 | 3053 | } |
1da177e4 | 3054 | |
b9f60253 JP |
3055 | do_failover: |
3056 | ASSERT_RTNL(); | |
e843fa50 | 3057 | block_netpoll_tx(); |
b2220cad | 3058 | write_lock_bh(&bond->curr_slave_lock); |
b9f60253 | 3059 | bond_select_active_slave(bond); |
b2220cad | 3060 | write_unlock_bh(&bond->curr_slave_lock); |
e843fa50 | 3061 | unblock_netpoll_tx(); |
b2220cad | 3062 | } |
1da177e4 | 3063 | |
b2220cad JV |
3064 | bond_set_carrier(bond); |
3065 | } | |
1da177e4 | 3066 | |
b2220cad JV |
3067 | /* |
3068 | * Send ARP probes for active-backup mode ARP monitor. | |
3069 | * | |
3070 | * Called with bond->lock held for read. | |
3071 | */ | |
3072 | static void bond_ab_arp_probe(struct bonding *bond) | |
3073 | { | |
3074 | struct slave *slave; | |
3075 | int i; | |
1da177e4 | 3076 | |
b2220cad | 3077 | read_lock(&bond->curr_slave_lock); |
1da177e4 | 3078 | |
b2220cad | 3079 | if (bond->current_arp_slave && bond->curr_active_slave) |
a4aee5c8 JP |
3080 | pr_info("PROBE: c_arp %s && cas %s BAD\n", |
3081 | bond->current_arp_slave->dev->name, | |
3082 | bond->curr_active_slave->dev->name); | |
1da177e4 | 3083 | |
b2220cad JV |
3084 | if (bond->curr_active_slave) { |
3085 | bond_arp_send_all(bond, bond->curr_active_slave); | |
3086 | read_unlock(&bond->curr_slave_lock); | |
3087 | return; | |
3088 | } | |
1da177e4 | 3089 | |
b2220cad | 3090 | read_unlock(&bond->curr_slave_lock); |
059fe7a5 | 3091 | |
b2220cad JV |
3092 | /* if we don't have a curr_active_slave, search for the next available |
3093 | * backup slave from the current_arp_slave and make it the candidate | |
3094 | * for becoming the curr_active_slave | |
3095 | */ | |
1da177e4 | 3096 | |
b2220cad JV |
3097 | if (!bond->current_arp_slave) { |
3098 | bond->current_arp_slave = bond->first_slave; | |
3099 | if (!bond->current_arp_slave) | |
3100 | return; | |
3101 | } | |
1da177e4 | 3102 | |
b2220cad | 3103 | bond_set_slave_inactive_flags(bond->current_arp_slave); |
059fe7a5 | 3104 | |
b2220cad JV |
3105 | /* search for next candidate */ |
3106 | bond_for_each_slave_from(bond, slave, i, bond->current_arp_slave->next) { | |
3107 | if (IS_UP(slave->dev)) { | |
3108 | slave->link = BOND_LINK_BACK; | |
3109 | bond_set_slave_active_flags(slave); | |
3110 | bond_arp_send_all(bond, slave); | |
1da177e4 | 3111 | slave->jiffies = jiffies; |
b2220cad JV |
3112 | bond->current_arp_slave = slave; |
3113 | break; | |
1da177e4 LT |
3114 | } |
3115 | ||
b2220cad JV |
3116 | /* if the link state is up at this point, we |
3117 | * mark it down - this can happen if we have | |
3118 | * simultaneous link failures and | |
3119 | * reselect_active_interface doesn't make this | |
3120 | * one the current slave so it is still marked | |
3121 | * up when it is actually down | |
1da177e4 | 3122 | */ |
b2220cad JV |
3123 | if (slave->link == BOND_LINK_UP) { |
3124 | slave->link = BOND_LINK_DOWN; | |
3125 | if (slave->link_failure_count < UINT_MAX) | |
3126 | slave->link_failure_count++; | |
1da177e4 | 3127 | |
b2220cad JV |
3128 | bond_set_slave_inactive_flags(slave); |
3129 | ||
a4aee5c8 JP |
3130 | pr_info("%s: backup interface %s is now down.\n", |
3131 | bond->dev->name, slave->dev->name); | |
1da177e4 | 3132 | } |
b2220cad JV |
3133 | } |
3134 | } | |
1da177e4 | 3135 | |
b2220cad JV |
3136 | void bond_activebackup_arp_mon(struct work_struct *work) |
3137 | { | |
3138 | struct bonding *bond = container_of(work, struct bonding, | |
3139 | arp_work.work); | |
3140 | int delta_in_ticks; | |
1da177e4 | 3141 | |
b2220cad | 3142 | read_lock(&bond->lock); |
1da177e4 | 3143 | |
b2220cad JV |
3144 | if (bond->kill_timers) |
3145 | goto out; | |
1da177e4 | 3146 | |
b2220cad | 3147 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
1da177e4 | 3148 | |
b2220cad JV |
3149 | if (bond->slave_cnt == 0) |
3150 | goto re_arm; | |
3151 | ||
b59f9f74 JV |
3152 | if (bond->send_grat_arp) { |
3153 | read_lock(&bond->curr_slave_lock); | |
3154 | bond_send_gratuitous_arp(bond); | |
3155 | read_unlock(&bond->curr_slave_lock); | |
3156 | } | |
3157 | ||
305d552a BH |
3158 | if (bond->send_unsol_na) { |
3159 | read_lock(&bond->curr_slave_lock); | |
3160 | bond_send_unsolicited_na(bond); | |
3161 | read_unlock(&bond->curr_slave_lock); | |
3162 | } | |
3163 | ||
b2220cad JV |
3164 | if (bond_ab_arp_inspect(bond, delta_in_ticks)) { |
3165 | read_unlock(&bond->lock); | |
3166 | rtnl_lock(); | |
3167 | read_lock(&bond->lock); | |
3168 | ||
3169 | bond_ab_arp_commit(bond, delta_in_ticks); | |
3170 | ||
3171 | read_unlock(&bond->lock); | |
3172 | rtnl_unlock(); | |
3173 | read_lock(&bond->lock); | |
1da177e4 LT |
3174 | } |
3175 | ||
b2220cad JV |
3176 | bond_ab_arp_probe(bond); |
3177 | ||
1da177e4 | 3178 | re_arm: |
3d632c3f | 3179 | if (bond->params.arp_interval) |
1b76b316 | 3180 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); |
1da177e4 LT |
3181 | out: |
3182 | read_unlock(&bond->lock); | |
3183 | } | |
3184 | ||
3185 | /*------------------------------ proc/seq_file-------------------------------*/ | |
3186 | ||
3187 | #ifdef CONFIG_PROC_FS | |
3188 | ||
1da177e4 | 3189 | static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos) |
e4a7b93b | 3190 | __acquires(RCU) |
1f78d9f9 | 3191 | __acquires(&bond->lock) |
1da177e4 LT |
3192 | { |
3193 | struct bonding *bond = seq->private; | |
3194 | loff_t off = 0; | |
3195 | struct slave *slave; | |
3196 | int i; | |
3197 | ||
3198 | /* make sure the bond won't be taken away */ | |
e4a7b93b | 3199 | rcu_read_lock(); |
6603a6f2 | 3200 | read_lock(&bond->lock); |
1da177e4 | 3201 | |
3d632c3f | 3202 | if (*pos == 0) |
1da177e4 | 3203 | return SEQ_START_TOKEN; |
1da177e4 LT |
3204 | |
3205 | bond_for_each_slave(bond, slave, i) { | |
3d632c3f | 3206 | if (++off == *pos) |
1da177e4 | 3207 | return slave; |
1da177e4 LT |
3208 | } |
3209 | ||
3210 | return NULL; | |
3211 | } | |
3212 | ||
3213 | static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
3214 | { | |
3215 | struct bonding *bond = seq->private; | |
3216 | struct slave *slave = v; | |
3217 | ||
3218 | ++*pos; | |
3d632c3f | 3219 | if (v == SEQ_START_TOKEN) |
1da177e4 | 3220 | return bond->first_slave; |
1da177e4 LT |
3221 | |
3222 | slave = slave->next; | |
3223 | ||
3224 | return (slave == bond->first_slave) ? NULL : slave; | |
3225 | } | |
3226 | ||
3227 | static void bond_info_seq_stop(struct seq_file *seq, void *v) | |
1f78d9f9 | 3228 | __releases(&bond->lock) |
e4a7b93b | 3229 | __releases(RCU) |
1da177e4 LT |
3230 | { |
3231 | struct bonding *bond = seq->private; | |
3232 | ||
6603a6f2 | 3233 | read_unlock(&bond->lock); |
e4a7b93b | 3234 | rcu_read_unlock(); |
1da177e4 LT |
3235 | } |
3236 | ||
3237 | static void bond_info_show_master(struct seq_file *seq) | |
3238 | { | |
3239 | struct bonding *bond = seq->private; | |
3240 | struct slave *curr; | |
4756b02f | 3241 | int i; |
1da177e4 LT |
3242 | |
3243 | read_lock(&bond->curr_slave_lock); | |
3244 | curr = bond->curr_active_slave; | |
3245 | read_unlock(&bond->curr_slave_lock); | |
3246 | ||
dd957c57 | 3247 | seq_printf(seq, "Bonding Mode: %s", |
1da177e4 LT |
3248 | bond_mode_name(bond->params.mode)); |
3249 | ||
dd957c57 JV |
3250 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP && |
3251 | bond->params.fail_over_mac) | |
3915c1e8 JV |
3252 | seq_printf(seq, " (fail_over_mac %s)", |
3253 | fail_over_mac_tbl[bond->params.fail_over_mac].modename); | |
dd957c57 JV |
3254 | |
3255 | seq_printf(seq, "\n"); | |
3256 | ||
c61b75ad MW |
3257 | if (bond->params.mode == BOND_MODE_XOR || |
3258 | bond->params.mode == BOND_MODE_8023AD) { | |
3259 | seq_printf(seq, "Transmit Hash Policy: %s (%d)\n", | |
3260 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, | |
3261 | bond->params.xmit_policy); | |
3262 | } | |
3263 | ||
1da177e4 | 3264 | if (USES_PRIMARY(bond->params.mode)) { |
a549952a | 3265 | seq_printf(seq, "Primary Slave: %s", |
0f418b2a MW |
3266 | (bond->primary_slave) ? |
3267 | bond->primary_slave->dev->name : "None"); | |
a549952a JP |
3268 | if (bond->primary_slave) |
3269 | seq_printf(seq, " (primary_reselect %s)", | |
3270 | pri_reselect_tbl[bond->params.primary_reselect].modename); | |
1da177e4 | 3271 | |
a549952a | 3272 | seq_printf(seq, "\nCurrently Active Slave: %s\n", |
1da177e4 LT |
3273 | (curr) ? curr->dev->name : "None"); |
3274 | } | |
3275 | ||
ff59c456 JV |
3276 | seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ? |
3277 | "up" : "down"); | |
1da177e4 LT |
3278 | seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon); |
3279 | seq_printf(seq, "Up Delay (ms): %d\n", | |
3280 | bond->params.updelay * bond->params.miimon); | |
3281 | seq_printf(seq, "Down Delay (ms): %d\n", | |
3282 | bond->params.downdelay * bond->params.miimon); | |
3283 | ||
4756b02f MW |
3284 | |
3285 | /* ARP information */ | |
3d632c3f SH |
3286 | if (bond->params.arp_interval > 0) { |
3287 | int printed = 0; | |
4756b02f MW |
3288 | seq_printf(seq, "ARP Polling Interval (ms): %d\n", |
3289 | bond->params.arp_interval); | |
3290 | ||
3291 | seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); | |
3292 | ||
3d632c3f | 3293 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
4756b02f | 3294 | if (!bond->params.arp_targets[i]) |
5a31bec0 | 3295 | break; |
4756b02f MW |
3296 | if (printed) |
3297 | seq_printf(seq, ","); | |
8cf14e38 | 3298 | seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); |
4756b02f MW |
3299 | printed = 1; |
3300 | } | |
3301 | seq_printf(seq, "\n"); | |
3302 | } | |
3303 | ||
1da177e4 LT |
3304 | if (bond->params.mode == BOND_MODE_8023AD) { |
3305 | struct ad_info ad_info; | |
3306 | ||
3307 | seq_puts(seq, "\n802.3ad info\n"); | |
3308 | seq_printf(seq, "LACP rate: %s\n", | |
3309 | (bond->params.lacp_fast) ? "fast" : "slow"); | |
fd989c83 JV |
3310 | seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", |
3311 | ad_select_tbl[bond->params.ad_select].modename); | |
1da177e4 LT |
3312 | |
3313 | if (bond_3ad_get_active_agg_info(bond, &ad_info)) { | |
3314 | seq_printf(seq, "bond %s has no active aggregator\n", | |
3315 | bond->dev->name); | |
3316 | } else { | |
3317 | seq_printf(seq, "Active Aggregator Info:\n"); | |
3318 | ||
3319 | seq_printf(seq, "\tAggregator ID: %d\n", | |
3320 | ad_info.aggregator_id); | |
3321 | seq_printf(seq, "\tNumber of ports: %d\n", | |
3322 | ad_info.ports); | |
3323 | seq_printf(seq, "\tActor Key: %d\n", | |
3324 | ad_info.actor_key); | |
3325 | seq_printf(seq, "\tPartner Key: %d\n", | |
3326 | ad_info.partner_key); | |
e174961c JB |
3327 | seq_printf(seq, "\tPartner Mac Address: %pM\n", |
3328 | ad_info.partner_system); | |
1da177e4 LT |
3329 | } |
3330 | } | |
3331 | } | |
3332 | ||
3d632c3f SH |
3333 | static void bond_info_show_slave(struct seq_file *seq, |
3334 | const struct slave *slave) | |
1da177e4 LT |
3335 | { |
3336 | struct bonding *bond = seq->private; | |
3337 | ||
3338 | seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); | |
3339 | seq_printf(seq, "MII Status: %s\n", | |
3340 | (slave->link == BOND_LINK_UP) ? "up" : "down"); | |
dd53df26 KO |
3341 | seq_printf(seq, "Speed: %d Mbps\n", slave->speed); |
3342 | seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half"); | |
65509645 | 3343 | seq_printf(seq, "Link Failure Count: %u\n", |
1da177e4 LT |
3344 | slave->link_failure_count); |
3345 | ||
e174961c | 3346 | seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr); |
1da177e4 LT |
3347 | |
3348 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3349 | const struct aggregator *agg | |
3350 | = SLAVE_AD_INFO(slave).port.aggregator; | |
3351 | ||
3d632c3f | 3352 | if (agg) |
1da177e4 LT |
3353 | seq_printf(seq, "Aggregator ID: %d\n", |
3354 | agg->aggregator_identifier); | |
3d632c3f | 3355 | else |
1da177e4 | 3356 | seq_puts(seq, "Aggregator ID: N/A\n"); |
1da177e4 | 3357 | } |
bb1d9123 | 3358 | seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id); |
1da177e4 LT |
3359 | } |
3360 | ||
3361 | static int bond_info_seq_show(struct seq_file *seq, void *v) | |
3362 | { | |
3363 | if (v == SEQ_START_TOKEN) { | |
3364 | seq_printf(seq, "%s\n", version); | |
3365 | bond_info_show_master(seq); | |
3d632c3f | 3366 | } else |
1da177e4 | 3367 | bond_info_show_slave(seq, v); |
1da177e4 LT |
3368 | |
3369 | return 0; | |
3370 | } | |
3371 | ||
4101dec9 | 3372 | static const struct seq_operations bond_info_seq_ops = { |
1da177e4 LT |
3373 | .start = bond_info_seq_start, |
3374 | .next = bond_info_seq_next, | |
3375 | .stop = bond_info_seq_stop, | |
3376 | .show = bond_info_seq_show, | |
3377 | }; | |
3378 | ||
3379 | static int bond_info_open(struct inode *inode, struct file *file) | |
3380 | { | |
3381 | struct seq_file *seq; | |
3382 | struct proc_dir_entry *proc; | |
3383 | int res; | |
3384 | ||
3385 | res = seq_open(file, &bond_info_seq_ops); | |
3386 | if (!res) { | |
3387 | /* recover the pointer buried in proc_dir_entry data */ | |
3388 | seq = file->private_data; | |
3389 | proc = PDE(inode); | |
3390 | seq->private = proc->data; | |
3391 | } | |
3392 | ||
3393 | return res; | |
3394 | } | |
3395 | ||
d54b1fdb | 3396 | static const struct file_operations bond_info_fops = { |
1da177e4 LT |
3397 | .owner = THIS_MODULE, |
3398 | .open = bond_info_open, | |
3399 | .read = seq_read, | |
3400 | .llseek = seq_lseek, | |
3401 | .release = seq_release, | |
3402 | }; | |
3403 | ||
38fc0026 | 3404 | static void bond_create_proc_entry(struct bonding *bond) |
1da177e4 LT |
3405 | { |
3406 | struct net_device *bond_dev = bond->dev; | |
ec87fd3b | 3407 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); |
1da177e4 | 3408 | |
ec87fd3b | 3409 | if (bn->proc_dir) { |
a95609cb | 3410 | bond->proc_entry = proc_create_data(bond_dev->name, |
ec87fd3b | 3411 | S_IRUGO, bn->proc_dir, |
a95609cb | 3412 | &bond_info_fops, bond); |
3d632c3f | 3413 | if (bond->proc_entry == NULL) |
a4aee5c8 JP |
3414 | pr_warning("Warning: Cannot create /proc/net/%s/%s\n", |
3415 | DRV_NAME, bond_dev->name); | |
3d632c3f | 3416 | else |
1da177e4 | 3417 | memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); |
1da177e4 | 3418 | } |
1da177e4 LT |
3419 | } |
3420 | ||
3421 | static void bond_remove_proc_entry(struct bonding *bond) | |
3422 | { | |
ec87fd3b EB |
3423 | struct net_device *bond_dev = bond->dev; |
3424 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); | |
3425 | ||
3426 | if (bn->proc_dir && bond->proc_entry) { | |
3427 | remove_proc_entry(bond->proc_file_name, bn->proc_dir); | |
1da177e4 LT |
3428 | memset(bond->proc_file_name, 0, IFNAMSIZ); |
3429 | bond->proc_entry = NULL; | |
3430 | } | |
3431 | } | |
3432 | ||
3433 | /* Create the bonding directory under /proc/net, if doesn't exist yet. | |
3434 | * Caller must hold rtnl_lock. | |
3435 | */ | |
2c8c1e72 | 3436 | static void __net_init bond_create_proc_dir(struct bond_net *bn) |
1da177e4 | 3437 | { |
ec87fd3b EB |
3438 | if (!bn->proc_dir) { |
3439 | bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net); | |
3440 | if (!bn->proc_dir) | |
a4aee5c8 JP |
3441 | pr_warning("Warning: cannot create /proc/net/%s\n", |
3442 | DRV_NAME); | |
1da177e4 LT |
3443 | } |
3444 | } | |
3445 | ||
3446 | /* Destroy the bonding directory under /proc/net, if empty. | |
3447 | * Caller must hold rtnl_lock. | |
3448 | */ | |
2c8c1e72 | 3449 | static void __net_exit bond_destroy_proc_dir(struct bond_net *bn) |
1da177e4 | 3450 | { |
ec87fd3b EB |
3451 | if (bn->proc_dir) { |
3452 | remove_proc_entry(DRV_NAME, bn->net->proc_net); | |
3453 | bn->proc_dir = NULL; | |
1da177e4 LT |
3454 | } |
3455 | } | |
aee64faf JP |
3456 | |
3457 | #else /* !CONFIG_PROC_FS */ | |
3458 | ||
38fc0026 | 3459 | static void bond_create_proc_entry(struct bonding *bond) |
aee64faf JP |
3460 | { |
3461 | } | |
3462 | ||
3463 | static void bond_remove_proc_entry(struct bonding *bond) | |
3464 | { | |
3465 | } | |
3466 | ||
2c8c1e72 | 3467 | static inline void bond_create_proc_dir(struct bond_net *bn) |
aee64faf JP |
3468 | { |
3469 | } | |
3470 | ||
2c8c1e72 | 3471 | static inline void bond_destroy_proc_dir(struct bond_net *bn) |
aee64faf JP |
3472 | { |
3473 | } | |
3474 | ||
1da177e4 LT |
3475 | #endif /* CONFIG_PROC_FS */ |
3476 | ||
aee64faf | 3477 | |
1da177e4 LT |
3478 | /*-------------------------- netdev event handling --------------------------*/ |
3479 | ||
3480 | /* | |
3481 | * Change device name | |
3482 | */ | |
3483 | static int bond_event_changename(struct bonding *bond) | |
3484 | { | |
1da177e4 LT |
3485 | bond_remove_proc_entry(bond); |
3486 | bond_create_proc_entry(bond); | |
7e083840 | 3487 | |
f073c7ca TI |
3488 | bond_debug_reregister(bond); |
3489 | ||
1da177e4 LT |
3490 | return NOTIFY_DONE; |
3491 | } | |
3492 | ||
3d632c3f SH |
3493 | static int bond_master_netdev_event(unsigned long event, |
3494 | struct net_device *bond_dev) | |
1da177e4 | 3495 | { |
454d7c9b | 3496 | struct bonding *event_bond = netdev_priv(bond_dev); |
1da177e4 LT |
3497 | |
3498 | switch (event) { | |
3499 | case NETDEV_CHANGENAME: | |
3500 | return bond_event_changename(event_bond); | |
1da177e4 LT |
3501 | default: |
3502 | break; | |
3503 | } | |
3504 | ||
3505 | return NOTIFY_DONE; | |
3506 | } | |
3507 | ||
3d632c3f SH |
3508 | static int bond_slave_netdev_event(unsigned long event, |
3509 | struct net_device *slave_dev) | |
1da177e4 LT |
3510 | { |
3511 | struct net_device *bond_dev = slave_dev->master; | |
454d7c9b | 3512 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3513 | |
3514 | switch (event) { | |
3515 | case NETDEV_UNREGISTER: | |
3516 | if (bond_dev) { | |
1284cd3a JV |
3517 | if (bond->setup_by_slave) |
3518 | bond_release_and_destroy(bond_dev, slave_dev); | |
3519 | else | |
3520 | bond_release(bond_dev, slave_dev); | |
1da177e4 LT |
3521 | } |
3522 | break; | |
3523 | case NETDEV_CHANGE: | |
17d04500 JV |
3524 | if (bond->params.mode == BOND_MODE_8023AD || bond_is_lb(bond)) { |
3525 | struct slave *slave; | |
3526 | ||
3527 | slave = bond_get_slave_by_dev(bond, slave_dev); | |
3528 | if (slave) { | |
3529 | u16 old_speed = slave->speed; | |
3530 | u16 old_duplex = slave->duplex; | |
3531 | ||
3532 | bond_update_speed_duplex(slave); | |
3533 | ||
3534 | if (bond_is_lb(bond)) | |
3535 | break; | |
3536 | ||
3537 | if (old_speed != slave->speed) | |
3538 | bond_3ad_adapter_speed_changed(slave); | |
3539 | if (old_duplex != slave->duplex) | |
3540 | bond_3ad_adapter_duplex_changed(slave); | |
3541 | } | |
3542 | } | |
3543 | ||
1da177e4 LT |
3544 | break; |
3545 | case NETDEV_DOWN: | |
3546 | /* | |
3547 | * ... Or is it this? | |
3548 | */ | |
3549 | break; | |
3550 | case NETDEV_CHANGEMTU: | |
3551 | /* | |
3552 | * TODO: Should slaves be allowed to | |
3553 | * independently alter their MTU? For | |
3554 | * an active-backup bond, slaves need | |
3555 | * not be the same type of device, so | |
3556 | * MTUs may vary. For other modes, | |
3557 | * slaves arguably should have the | |
3558 | * same MTUs. To do this, we'd need to | |
3559 | * take over the slave's change_mtu | |
3560 | * function for the duration of their | |
3561 | * servitude. | |
3562 | */ | |
3563 | break; | |
3564 | case NETDEV_CHANGENAME: | |
3565 | /* | |
3566 | * TODO: handle changing the primary's name | |
3567 | */ | |
3568 | break; | |
8531c5ff AK |
3569 | case NETDEV_FEAT_CHANGE: |
3570 | bond_compute_features(bond); | |
3571 | break; | |
1da177e4 LT |
3572 | default: |
3573 | break; | |
3574 | } | |
3575 | ||
3576 | return NOTIFY_DONE; | |
3577 | } | |
3578 | ||
3579 | /* | |
3580 | * bond_netdev_event: handle netdev notifier chain events. | |
3581 | * | |
3582 | * This function receives events for the netdev chain. The caller (an | |
e041c683 | 3583 | * ioctl handler calling blocking_notifier_call_chain) holds the necessary |
1da177e4 LT |
3584 | * locks for us to safely manipulate the slave devices (RTNL lock, |
3585 | * dev_probe_lock). | |
3586 | */ | |
3d632c3f SH |
3587 | static int bond_netdev_event(struct notifier_block *this, |
3588 | unsigned long event, void *ptr) | |
1da177e4 LT |
3589 | { |
3590 | struct net_device *event_dev = (struct net_device *)ptr; | |
3591 | ||
5a03cdb7 | 3592 | pr_debug("event_dev: %s, event: %lx\n", |
a4aee5c8 JP |
3593 | event_dev ? event_dev->name : "None", |
3594 | event); | |
1da177e4 | 3595 | |
0b680e75 JV |
3596 | if (!(event_dev->priv_flags & IFF_BONDING)) |
3597 | return NOTIFY_DONE; | |
3598 | ||
1da177e4 | 3599 | if (event_dev->flags & IFF_MASTER) { |
5a03cdb7 | 3600 | pr_debug("IFF_MASTER\n"); |
1da177e4 LT |
3601 | return bond_master_netdev_event(event, event_dev); |
3602 | } | |
3603 | ||
3604 | if (event_dev->flags & IFF_SLAVE) { | |
5a03cdb7 | 3605 | pr_debug("IFF_SLAVE\n"); |
1da177e4 LT |
3606 | return bond_slave_netdev_event(event, event_dev); |
3607 | } | |
3608 | ||
3609 | return NOTIFY_DONE; | |
3610 | } | |
3611 | ||
c3ade5ca JV |
3612 | /* |
3613 | * bond_inetaddr_event: handle inetaddr notifier chain events. | |
3614 | * | |
3615 | * We keep track of device IPs primarily to use as source addresses in | |
3616 | * ARP monitor probes (rather than spewing out broadcasts all the time). | |
3617 | * | |
3618 | * We track one IP for the main device (if it has one), plus one per VLAN. | |
3619 | */ | |
3620 | static int bond_inetaddr_event(struct notifier_block *this, unsigned long event, void *ptr) | |
3621 | { | |
3622 | struct in_ifaddr *ifa = ptr; | |
3623 | struct net_device *vlan_dev, *event_dev = ifa->ifa_dev->dev; | |
ec87fd3b | 3624 | struct bond_net *bn = net_generic(dev_net(event_dev), bond_net_id); |
0883beca PE |
3625 | struct bonding *bond; |
3626 | struct vlan_entry *vlan; | |
c3ade5ca | 3627 | |
ec87fd3b | 3628 | list_for_each_entry(bond, &bn->dev_list, bond_list) { |
c3ade5ca JV |
3629 | if (bond->dev == event_dev) { |
3630 | switch (event) { | |
3631 | case NETDEV_UP: | |
3632 | bond->master_ip = ifa->ifa_local; | |
3633 | return NOTIFY_OK; | |
3634 | case NETDEV_DOWN: | |
3635 | bond->master_ip = bond_glean_dev_ip(bond->dev); | |
3636 | return NOTIFY_OK; | |
3637 | default: | |
3638 | return NOTIFY_DONE; | |
3639 | } | |
3640 | } | |
3641 | ||
0883beca | 3642 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
f35188fa JV |
3643 | if (!bond->vlgrp) |
3644 | continue; | |
5c15bdec | 3645 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
3646 | if (vlan_dev == event_dev) { |
3647 | switch (event) { | |
3648 | case NETDEV_UP: | |
3649 | vlan->vlan_ip = ifa->ifa_local; | |
3650 | return NOTIFY_OK; | |
3651 | case NETDEV_DOWN: | |
3652 | vlan->vlan_ip = | |
3653 | bond_glean_dev_ip(vlan_dev); | |
3654 | return NOTIFY_OK; | |
3655 | default: | |
3656 | return NOTIFY_DONE; | |
3657 | } | |
3658 | } | |
3659 | } | |
3660 | } | |
3661 | return NOTIFY_DONE; | |
3662 | } | |
3663 | ||
1da177e4 LT |
3664 | static struct notifier_block bond_netdev_notifier = { |
3665 | .notifier_call = bond_netdev_event, | |
3666 | }; | |
3667 | ||
c3ade5ca JV |
3668 | static struct notifier_block bond_inetaddr_notifier = { |
3669 | .notifier_call = bond_inetaddr_event, | |
3670 | }; | |
3671 | ||
1da177e4 LT |
3672 | /*-------------------------- Packet type handling ---------------------------*/ |
3673 | ||
3674 | /* register to receive lacpdus on a bond */ | |
3675 | static void bond_register_lacpdu(struct bonding *bond) | |
3676 | { | |
3677 | struct packet_type *pk_type = &(BOND_AD_INFO(bond).ad_pkt_type); | |
3678 | ||
3679 | /* initialize packet type */ | |
3680 | pk_type->type = PKT_TYPE_LACPDU; | |
3681 | pk_type->dev = bond->dev; | |
3682 | pk_type->func = bond_3ad_lacpdu_recv; | |
3683 | ||
3684 | dev_add_pack(pk_type); | |
3685 | } | |
3686 | ||
3687 | /* unregister to receive lacpdus on a bond */ | |
3688 | static void bond_unregister_lacpdu(struct bonding *bond) | |
3689 | { | |
3690 | dev_remove_pack(&(BOND_AD_INFO(bond).ad_pkt_type)); | |
3691 | } | |
3692 | ||
f5b2b966 JV |
3693 | void bond_register_arp(struct bonding *bond) |
3694 | { | |
3695 | struct packet_type *pt = &bond->arp_mon_pt; | |
3696 | ||
c4f283b1 JV |
3697 | if (pt->type) |
3698 | return; | |
3699 | ||
f5b2b966 | 3700 | pt->type = htons(ETH_P_ARP); |
e245cb71 | 3701 | pt->dev = bond->dev; |
f5b2b966 JV |
3702 | pt->func = bond_arp_rcv; |
3703 | dev_add_pack(pt); | |
3704 | } | |
3705 | ||
3706 | void bond_unregister_arp(struct bonding *bond) | |
3707 | { | |
c4f283b1 JV |
3708 | struct packet_type *pt = &bond->arp_mon_pt; |
3709 | ||
3710 | dev_remove_pack(pt); | |
3711 | pt->type = 0; | |
f5b2b966 JV |
3712 | } |
3713 | ||
169a3e66 JV |
3714 | /*---------------------------- Hashing Policies -----------------------------*/ |
3715 | ||
6f6652be JV |
3716 | /* |
3717 | * Hash for the output device based upon layer 2 and layer 3 data. If | |
3718 | * the packet is not IP mimic bond_xmit_hash_policy_l2() | |
3719 | */ | |
a361c83c | 3720 | static int bond_xmit_hash_policy_l23(struct sk_buff *skb, int count) |
6f6652be JV |
3721 | { |
3722 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
3723 | struct iphdr *iph = ip_hdr(skb); | |
3724 | ||
f14c4e4e | 3725 | if (skb->protocol == htons(ETH_P_IP)) { |
6f6652be | 3726 | return ((ntohl(iph->saddr ^ iph->daddr) & 0xffff) ^ |
d3da6831 | 3727 | (data->h_dest[5] ^ data->h_source[5])) % count; |
6f6652be JV |
3728 | } |
3729 | ||
d3da6831 | 3730 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
6f6652be JV |
3731 | } |
3732 | ||
169a3e66 | 3733 | /* |
59c51591 | 3734 | * Hash for the output device based upon layer 3 and layer 4 data. If |
169a3e66 JV |
3735 | * the packet is a frag or not TCP or UDP, just use layer 3 data. If it is |
3736 | * altogether not IP, mimic bond_xmit_hash_policy_l2() | |
3737 | */ | |
a361c83c | 3738 | static int bond_xmit_hash_policy_l34(struct sk_buff *skb, int count) |
169a3e66 JV |
3739 | { |
3740 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
eddc9ec5 | 3741 | struct iphdr *iph = ip_hdr(skb); |
d3bb52b0 | 3742 | __be16 *layer4hdr = (__be16 *)((u32 *)iph + iph->ihl); |
169a3e66 JV |
3743 | int layer4_xor = 0; |
3744 | ||
f14c4e4e BH |
3745 | if (skb->protocol == htons(ETH_P_IP)) { |
3746 | if (!(iph->frag_off & htons(IP_MF|IP_OFFSET)) && | |
169a3e66 JV |
3747 | (iph->protocol == IPPROTO_TCP || |
3748 | iph->protocol == IPPROTO_UDP)) { | |
d3bb52b0 | 3749 | layer4_xor = ntohs((*layer4hdr ^ *(layer4hdr + 1))); |
169a3e66 JV |
3750 | } |
3751 | return (layer4_xor ^ | |
3752 | ((ntohl(iph->saddr ^ iph->daddr)) & 0xffff)) % count; | |
3753 | ||
3754 | } | |
3755 | ||
d3da6831 | 3756 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
169a3e66 JV |
3757 | } |
3758 | ||
3759 | /* | |
3760 | * Hash for the output device based upon layer 2 data | |
3761 | */ | |
a361c83c | 3762 | static int bond_xmit_hash_policy_l2(struct sk_buff *skb, int count) |
169a3e66 JV |
3763 | { |
3764 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
3765 | ||
d3da6831 | 3766 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
169a3e66 JV |
3767 | } |
3768 | ||
1da177e4 LT |
3769 | /*-------------------------- Device entry points ----------------------------*/ |
3770 | ||
3771 | static int bond_open(struct net_device *bond_dev) | |
3772 | { | |
454d7c9b | 3773 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3774 | |
3775 | bond->kill_timers = 0; | |
3776 | ||
5a37e8ca FL |
3777 | INIT_DELAYED_WORK(&bond->mcast_work, bond_resend_igmp_join_requests_delayed); |
3778 | ||
58402054 | 3779 | if (bond_is_lb(bond)) { |
1da177e4 LT |
3780 | /* bond_alb_initialize must be called before the timer |
3781 | * is started. | |
3782 | */ | |
3783 | if (bond_alb_initialize(bond, (bond->params.mode == BOND_MODE_ALB))) { | |
3784 | /* something went wrong - fail the open operation */ | |
b473946a | 3785 | return -ENOMEM; |
1da177e4 LT |
3786 | } |
3787 | ||
1b76b316 JV |
3788 | INIT_DELAYED_WORK(&bond->alb_work, bond_alb_monitor); |
3789 | queue_delayed_work(bond->wq, &bond->alb_work, 0); | |
1da177e4 LT |
3790 | } |
3791 | ||
3792 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ | |
1b76b316 JV |
3793 | INIT_DELAYED_WORK(&bond->mii_work, bond_mii_monitor); |
3794 | queue_delayed_work(bond->wq, &bond->mii_work, 0); | |
1da177e4 LT |
3795 | } |
3796 | ||
3797 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ | |
1b76b316 JV |
3798 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) |
3799 | INIT_DELAYED_WORK(&bond->arp_work, | |
3800 | bond_activebackup_arp_mon); | |
3801 | else | |
3802 | INIT_DELAYED_WORK(&bond->arp_work, | |
3803 | bond_loadbalance_arp_mon); | |
3804 | ||
3805 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
f5b2b966 JV |
3806 | if (bond->params.arp_validate) |
3807 | bond_register_arp(bond); | |
1da177e4 LT |
3808 | } |
3809 | ||
3810 | if (bond->params.mode == BOND_MODE_8023AD) { | |
a40745f5 | 3811 | INIT_DELAYED_WORK(&bond->ad_work, bond_3ad_state_machine_handler); |
1b76b316 | 3812 | queue_delayed_work(bond->wq, &bond->ad_work, 0); |
1da177e4 LT |
3813 | /* register to receive LACPDUs */ |
3814 | bond_register_lacpdu(bond); | |
fd989c83 | 3815 | bond_3ad_initiate_agg_selection(bond, 1); |
1da177e4 LT |
3816 | } |
3817 | ||
3818 | return 0; | |
3819 | } | |
3820 | ||
3821 | static int bond_close(struct net_device *bond_dev) | |
3822 | { | |
454d7c9b | 3823 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3824 | |
3825 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3826 | /* Unregister the receive of LACPDUs */ | |
3827 | bond_unregister_lacpdu(bond); | |
3828 | } | |
3829 | ||
f5b2b966 JV |
3830 | if (bond->params.arp_validate) |
3831 | bond_unregister_arp(bond); | |
3832 | ||
1da177e4 LT |
3833 | write_lock_bh(&bond->lock); |
3834 | ||
b59f9f74 | 3835 | bond->send_grat_arp = 0; |
305d552a | 3836 | bond->send_unsol_na = 0; |
1da177e4 LT |
3837 | |
3838 | /* signal timers not to re-arm */ | |
3839 | bond->kill_timers = 1; | |
3840 | ||
3841 | write_unlock_bh(&bond->lock); | |
3842 | ||
1da177e4 | 3843 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ |
1b76b316 | 3844 | cancel_delayed_work(&bond->mii_work); |
1da177e4 LT |
3845 | } |
3846 | ||
3847 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ | |
1b76b316 | 3848 | cancel_delayed_work(&bond->arp_work); |
1da177e4 LT |
3849 | } |
3850 | ||
3851 | switch (bond->params.mode) { | |
3852 | case BOND_MODE_8023AD: | |
1b76b316 | 3853 | cancel_delayed_work(&bond->ad_work); |
1da177e4 LT |
3854 | break; |
3855 | case BOND_MODE_TLB: | |
3856 | case BOND_MODE_ALB: | |
1b76b316 | 3857 | cancel_delayed_work(&bond->alb_work); |
1da177e4 LT |
3858 | break; |
3859 | default: | |
3860 | break; | |
3861 | } | |
3862 | ||
5a37e8ca FL |
3863 | if (delayed_work_pending(&bond->mcast_work)) |
3864 | cancel_delayed_work(&bond->mcast_work); | |
1da177e4 | 3865 | |
58402054 | 3866 | if (bond_is_lb(bond)) { |
1da177e4 LT |
3867 | /* Must be called only after all |
3868 | * slaves have been released | |
3869 | */ | |
3870 | bond_alb_deinitialize(bond); | |
3871 | } | |
3872 | ||
3873 | return 0; | |
3874 | } | |
3875 | ||
28172739 ED |
3876 | static struct rtnl_link_stats64 *bond_get_stats(struct net_device *bond_dev, |
3877 | struct rtnl_link_stats64 *stats) | |
1da177e4 | 3878 | { |
454d7c9b | 3879 | struct bonding *bond = netdev_priv(bond_dev); |
28172739 | 3880 | struct rtnl_link_stats64 temp; |
1da177e4 LT |
3881 | struct slave *slave; |
3882 | int i; | |
3883 | ||
28172739 | 3884 | memset(stats, 0, sizeof(*stats)); |
1da177e4 LT |
3885 | |
3886 | read_lock_bh(&bond->lock); | |
3887 | ||
3888 | bond_for_each_slave(bond, slave, i) { | |
be1f3c2c | 3889 | const struct rtnl_link_stats64 *sstats = |
28172739 ED |
3890 | dev_get_stats(slave->dev, &temp); |
3891 | ||
3892 | stats->rx_packets += sstats->rx_packets; | |
3893 | stats->rx_bytes += sstats->rx_bytes; | |
3894 | stats->rx_errors += sstats->rx_errors; | |
3895 | stats->rx_dropped += sstats->rx_dropped; | |
3896 | ||
3897 | stats->tx_packets += sstats->tx_packets; | |
3898 | stats->tx_bytes += sstats->tx_bytes; | |
3899 | stats->tx_errors += sstats->tx_errors; | |
3900 | stats->tx_dropped += sstats->tx_dropped; | |
3901 | ||
3902 | stats->multicast += sstats->multicast; | |
3903 | stats->collisions += sstats->collisions; | |
3904 | ||
3905 | stats->rx_length_errors += sstats->rx_length_errors; | |
3906 | stats->rx_over_errors += sstats->rx_over_errors; | |
3907 | stats->rx_crc_errors += sstats->rx_crc_errors; | |
3908 | stats->rx_frame_errors += sstats->rx_frame_errors; | |
3909 | stats->rx_fifo_errors += sstats->rx_fifo_errors; | |
3910 | stats->rx_missed_errors += sstats->rx_missed_errors; | |
3911 | ||
3912 | stats->tx_aborted_errors += sstats->tx_aborted_errors; | |
3913 | stats->tx_carrier_errors += sstats->tx_carrier_errors; | |
3914 | stats->tx_fifo_errors += sstats->tx_fifo_errors; | |
3915 | stats->tx_heartbeat_errors += sstats->tx_heartbeat_errors; | |
3916 | stats->tx_window_errors += sstats->tx_window_errors; | |
2439f9eb AG |
3917 | } |
3918 | ||
1da177e4 LT |
3919 | read_unlock_bh(&bond->lock); |
3920 | ||
3921 | return stats; | |
3922 | } | |
3923 | ||
3924 | static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd) | |
3925 | { | |
3926 | struct net_device *slave_dev = NULL; | |
3927 | struct ifbond k_binfo; | |
3928 | struct ifbond __user *u_binfo = NULL; | |
3929 | struct ifslave k_sinfo; | |
3930 | struct ifslave __user *u_sinfo = NULL; | |
3931 | struct mii_ioctl_data *mii = NULL; | |
1da177e4 LT |
3932 | int res = 0; |
3933 | ||
a4aee5c8 | 3934 | pr_debug("bond_ioctl: master=%s, cmd=%d\n", bond_dev->name, cmd); |
1da177e4 LT |
3935 | |
3936 | switch (cmd) { | |
1da177e4 LT |
3937 | case SIOCGMIIPHY: |
3938 | mii = if_mii(ifr); | |
3d632c3f | 3939 | if (!mii) |
1da177e4 | 3940 | return -EINVAL; |
3d632c3f | 3941 | |
1da177e4 LT |
3942 | mii->phy_id = 0; |
3943 | /* Fall Through */ | |
3944 | case SIOCGMIIREG: | |
3945 | /* | |
3946 | * We do this again just in case we were called by SIOCGMIIREG | |
3947 | * instead of SIOCGMIIPHY. | |
3948 | */ | |
3949 | mii = if_mii(ifr); | |
3d632c3f | 3950 | if (!mii) |
1da177e4 | 3951 | return -EINVAL; |
3d632c3f | 3952 | |
1da177e4 LT |
3953 | |
3954 | if (mii->reg_num == 1) { | |
454d7c9b | 3955 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 3956 | mii->val_out = 0; |
6603a6f2 | 3957 | read_lock(&bond->lock); |
1da177e4 | 3958 | read_lock(&bond->curr_slave_lock); |
3d632c3f | 3959 | if (netif_carrier_ok(bond->dev)) |
1da177e4 | 3960 | mii->val_out = BMSR_LSTATUS; |
3d632c3f | 3961 | |
1da177e4 | 3962 | read_unlock(&bond->curr_slave_lock); |
6603a6f2 | 3963 | read_unlock(&bond->lock); |
1da177e4 LT |
3964 | } |
3965 | ||
3966 | return 0; | |
3967 | case BOND_INFO_QUERY_OLD: | |
3968 | case SIOCBONDINFOQUERY: | |
3969 | u_binfo = (struct ifbond __user *)ifr->ifr_data; | |
3970 | ||
3d632c3f | 3971 | if (copy_from_user(&k_binfo, u_binfo, sizeof(ifbond))) |
1da177e4 | 3972 | return -EFAULT; |
1da177e4 LT |
3973 | |
3974 | res = bond_info_query(bond_dev, &k_binfo); | |
3d632c3f SH |
3975 | if (res == 0 && |
3976 | copy_to_user(u_binfo, &k_binfo, sizeof(ifbond))) | |
3977 | return -EFAULT; | |
1da177e4 LT |
3978 | |
3979 | return res; | |
3980 | case BOND_SLAVE_INFO_QUERY_OLD: | |
3981 | case SIOCBONDSLAVEINFOQUERY: | |
3982 | u_sinfo = (struct ifslave __user *)ifr->ifr_data; | |
3983 | ||
3d632c3f | 3984 | if (copy_from_user(&k_sinfo, u_sinfo, sizeof(ifslave))) |
1da177e4 | 3985 | return -EFAULT; |
1da177e4 LT |
3986 | |
3987 | res = bond_slave_info_query(bond_dev, &k_sinfo); | |
3d632c3f SH |
3988 | if (res == 0 && |
3989 | copy_to_user(u_sinfo, &k_sinfo, sizeof(ifslave))) | |
3990 | return -EFAULT; | |
1da177e4 LT |
3991 | |
3992 | return res; | |
3993 | default: | |
3994 | /* Go on */ | |
3995 | break; | |
3996 | } | |
3997 | ||
3d632c3f | 3998 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 3999 | return -EPERM; |
1da177e4 | 4000 | |
ec87fd3b | 4001 | slave_dev = dev_get_by_name(dev_net(bond_dev), ifr->ifr_slave); |
1da177e4 | 4002 | |
a4aee5c8 | 4003 | pr_debug("slave_dev=%p:\n", slave_dev); |
1da177e4 | 4004 | |
3d632c3f | 4005 | if (!slave_dev) |
1da177e4 | 4006 | res = -ENODEV; |
3d632c3f | 4007 | else { |
a4aee5c8 | 4008 | pr_debug("slave_dev->name=%s:\n", slave_dev->name); |
1da177e4 LT |
4009 | switch (cmd) { |
4010 | case BOND_ENSLAVE_OLD: | |
4011 | case SIOCBONDENSLAVE: | |
4012 | res = bond_enslave(bond_dev, slave_dev); | |
4013 | break; | |
4014 | case BOND_RELEASE_OLD: | |
4015 | case SIOCBONDRELEASE: | |
4016 | res = bond_release(bond_dev, slave_dev); | |
4017 | break; | |
4018 | case BOND_SETHWADDR_OLD: | |
4019 | case SIOCBONDSETHWADDR: | |
4020 | res = bond_sethwaddr(bond_dev, slave_dev); | |
4021 | break; | |
4022 | case BOND_CHANGE_ACTIVE_OLD: | |
4023 | case SIOCBONDCHANGEACTIVE: | |
4024 | res = bond_ioctl_change_active(bond_dev, slave_dev); | |
4025 | break; | |
4026 | default: | |
4027 | res = -EOPNOTSUPP; | |
4028 | } | |
4029 | ||
4030 | dev_put(slave_dev); | |
4031 | } | |
4032 | ||
1da177e4 LT |
4033 | return res; |
4034 | } | |
4035 | ||
22bedad3 JP |
4036 | static bool bond_addr_in_mc_list(unsigned char *addr, |
4037 | struct netdev_hw_addr_list *list, | |
4038 | int addrlen) | |
4039 | { | |
4040 | struct netdev_hw_addr *ha; | |
4041 | ||
4042 | netdev_hw_addr_list_for_each(ha, list) | |
4043 | if (!memcmp(ha->addr, addr, addrlen)) | |
4044 | return true; | |
4045 | ||
4046 | return false; | |
4047 | } | |
4048 | ||
1da177e4 LT |
4049 | static void bond_set_multicast_list(struct net_device *bond_dev) |
4050 | { | |
454d7c9b | 4051 | struct bonding *bond = netdev_priv(bond_dev); |
22bedad3 JP |
4052 | struct netdev_hw_addr *ha; |
4053 | bool found; | |
1da177e4 | 4054 | |
1da177e4 LT |
4055 | /* |
4056 | * Do promisc before checking multicast_mode | |
4057 | */ | |
3d632c3f | 4058 | if ((bond_dev->flags & IFF_PROMISC) && !(bond->flags & IFF_PROMISC)) |
7e1a1ac1 WC |
4059 | /* |
4060 | * FIXME: Need to handle the error when one of the multi-slaves | |
4061 | * encounters error. | |
4062 | */ | |
1da177e4 | 4063 | bond_set_promiscuity(bond, 1); |
1da177e4 | 4064 | |
3d632c3f SH |
4065 | |
4066 | if (!(bond_dev->flags & IFF_PROMISC) && (bond->flags & IFF_PROMISC)) | |
1da177e4 | 4067 | bond_set_promiscuity(bond, -1); |
3d632c3f | 4068 | |
1da177e4 LT |
4069 | |
4070 | /* set allmulti flag to slaves */ | |
3d632c3f | 4071 | if ((bond_dev->flags & IFF_ALLMULTI) && !(bond->flags & IFF_ALLMULTI)) |
7e1a1ac1 WC |
4072 | /* |
4073 | * FIXME: Need to handle the error when one of the multi-slaves | |
4074 | * encounters error. | |
4075 | */ | |
1da177e4 | 4076 | bond_set_allmulti(bond, 1); |
1da177e4 | 4077 | |
3d632c3f SH |
4078 | |
4079 | if (!(bond_dev->flags & IFF_ALLMULTI) && (bond->flags & IFF_ALLMULTI)) | |
1da177e4 | 4080 | bond_set_allmulti(bond, -1); |
3d632c3f | 4081 | |
1da177e4 | 4082 | |
80ee5ad2 JV |
4083 | read_lock(&bond->lock); |
4084 | ||
1da177e4 LT |
4085 | bond->flags = bond_dev->flags; |
4086 | ||
4087 | /* looking for addresses to add to slaves' mc list */ | |
22bedad3 JP |
4088 | netdev_for_each_mc_addr(ha, bond_dev) { |
4089 | found = bond_addr_in_mc_list(ha->addr, &bond->mc_list, | |
4090 | bond_dev->addr_len); | |
4091 | if (!found) | |
4092 | bond_mc_add(bond, ha->addr); | |
1da177e4 LT |
4093 | } |
4094 | ||
4095 | /* looking for addresses to delete from slaves' list */ | |
22bedad3 JP |
4096 | netdev_hw_addr_list_for_each(ha, &bond->mc_list) { |
4097 | found = bond_addr_in_mc_list(ha->addr, &bond_dev->mc, | |
4098 | bond_dev->addr_len); | |
4099 | if (!found) | |
4100 | bond_mc_del(bond, ha->addr); | |
1da177e4 LT |
4101 | } |
4102 | ||
4103 | /* save master's multicast list */ | |
22bedad3 JP |
4104 | __hw_addr_flush(&bond->mc_list); |
4105 | __hw_addr_add_multiple(&bond->mc_list, &bond_dev->mc, | |
4106 | bond_dev->addr_len, NETDEV_HW_ADDR_T_MULTICAST); | |
1da177e4 | 4107 | |
80ee5ad2 | 4108 | read_unlock(&bond->lock); |
1da177e4 LT |
4109 | } |
4110 | ||
00829823 SH |
4111 | static int bond_neigh_setup(struct net_device *dev, struct neigh_parms *parms) |
4112 | { | |
4113 | struct bonding *bond = netdev_priv(dev); | |
4114 | struct slave *slave = bond->first_slave; | |
4115 | ||
4116 | if (slave) { | |
4117 | const struct net_device_ops *slave_ops | |
4118 | = slave->dev->netdev_ops; | |
4119 | if (slave_ops->ndo_neigh_setup) | |
72e2240f | 4120 | return slave_ops->ndo_neigh_setup(slave->dev, parms); |
00829823 SH |
4121 | } |
4122 | return 0; | |
4123 | } | |
4124 | ||
1da177e4 LT |
4125 | /* |
4126 | * Change the MTU of all of a master's slaves to match the master | |
4127 | */ | |
4128 | static int bond_change_mtu(struct net_device *bond_dev, int new_mtu) | |
4129 | { | |
454d7c9b | 4130 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4131 | struct slave *slave, *stop_at; |
4132 | int res = 0; | |
4133 | int i; | |
4134 | ||
5a03cdb7 | 4135 | pr_debug("bond=%p, name=%s, new_mtu=%d\n", bond, |
a4aee5c8 | 4136 | (bond_dev ? bond_dev->name : "None"), new_mtu); |
1da177e4 LT |
4137 | |
4138 | /* Can't hold bond->lock with bh disabled here since | |
4139 | * some base drivers panic. On the other hand we can't | |
4140 | * hold bond->lock without bh disabled because we'll | |
4141 | * deadlock. The only solution is to rely on the fact | |
4142 | * that we're under rtnl_lock here, and the slaves | |
4143 | * list won't change. This doesn't solve the problem | |
4144 | * of setting the slave's MTU while it is | |
4145 | * transmitting, but the assumption is that the base | |
4146 | * driver can handle that. | |
4147 | * | |
4148 | * TODO: figure out a way to safely iterate the slaves | |
4149 | * list, but without holding a lock around the actual | |
4150 | * call to the base driver. | |
4151 | */ | |
4152 | ||
4153 | bond_for_each_slave(bond, slave, i) { | |
a4aee5c8 JP |
4154 | pr_debug("s %p s->p %p c_m %p\n", |
4155 | slave, | |
4156 | slave->prev, | |
4157 | slave->dev->netdev_ops->ndo_change_mtu); | |
e944ef79 | 4158 | |
1da177e4 LT |
4159 | res = dev_set_mtu(slave->dev, new_mtu); |
4160 | ||
4161 | if (res) { | |
4162 | /* If we failed to set the slave's mtu to the new value | |
4163 | * we must abort the operation even in ACTIVE_BACKUP | |
4164 | * mode, because if we allow the backup slaves to have | |
4165 | * different mtu values than the active slave we'll | |
4166 | * need to change their mtu when doing a failover. That | |
4167 | * means changing their mtu from timer context, which | |
4168 | * is probably not a good idea. | |
4169 | */ | |
5a03cdb7 | 4170 | pr_debug("err %d %s\n", res, slave->dev->name); |
1da177e4 LT |
4171 | goto unwind; |
4172 | } | |
4173 | } | |
4174 | ||
4175 | bond_dev->mtu = new_mtu; | |
4176 | ||
4177 | return 0; | |
4178 | ||
4179 | unwind: | |
4180 | /* unwind from head to the slave that failed */ | |
4181 | stop_at = slave; | |
4182 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { | |
4183 | int tmp_res; | |
4184 | ||
4185 | tmp_res = dev_set_mtu(slave->dev, bond_dev->mtu); | |
4186 | if (tmp_res) { | |
a4aee5c8 JP |
4187 | pr_debug("unwind err %d dev %s\n", |
4188 | tmp_res, slave->dev->name); | |
1da177e4 LT |
4189 | } |
4190 | } | |
4191 | ||
4192 | return res; | |
4193 | } | |
4194 | ||
4195 | /* | |
4196 | * Change HW address | |
4197 | * | |
4198 | * Note that many devices must be down to change the HW address, and | |
4199 | * downing the master releases all slaves. We can make bonds full of | |
4200 | * bonding devices to test this, however. | |
4201 | */ | |
4202 | static int bond_set_mac_address(struct net_device *bond_dev, void *addr) | |
4203 | { | |
454d7c9b | 4204 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4205 | struct sockaddr *sa = addr, tmp_sa; |
4206 | struct slave *slave, *stop_at; | |
4207 | int res = 0; | |
4208 | int i; | |
4209 | ||
eb7cc59a SH |
4210 | if (bond->params.mode == BOND_MODE_ALB) |
4211 | return bond_alb_set_mac_address(bond_dev, addr); | |
4212 | ||
4213 | ||
a4aee5c8 JP |
4214 | pr_debug("bond=%p, name=%s\n", |
4215 | bond, bond_dev ? bond_dev->name : "None"); | |
1da177e4 | 4216 | |
dd957c57 | 4217 | /* |
3915c1e8 JV |
4218 | * If fail_over_mac is set to active, do nothing and return |
4219 | * success. Returning an error causes ifenslave to fail. | |
dd957c57 | 4220 | */ |
3915c1e8 | 4221 | if (bond->params.fail_over_mac == BOND_FOM_ACTIVE) |
dd957c57 | 4222 | return 0; |
2ab82852 | 4223 | |
3d632c3f | 4224 | if (!is_valid_ether_addr(sa->sa_data)) |
1da177e4 | 4225 | return -EADDRNOTAVAIL; |
1da177e4 LT |
4226 | |
4227 | /* Can't hold bond->lock with bh disabled here since | |
4228 | * some base drivers panic. On the other hand we can't | |
4229 | * hold bond->lock without bh disabled because we'll | |
4230 | * deadlock. The only solution is to rely on the fact | |
4231 | * that we're under rtnl_lock here, and the slaves | |
4232 | * list won't change. This doesn't solve the problem | |
4233 | * of setting the slave's hw address while it is | |
4234 | * transmitting, but the assumption is that the base | |
4235 | * driver can handle that. | |
4236 | * | |
4237 | * TODO: figure out a way to safely iterate the slaves | |
4238 | * list, but without holding a lock around the actual | |
4239 | * call to the base driver. | |
4240 | */ | |
4241 | ||
4242 | bond_for_each_slave(bond, slave, i) { | |
eb7cc59a | 4243 | const struct net_device_ops *slave_ops = slave->dev->netdev_ops; |
5a03cdb7 | 4244 | pr_debug("slave %p %s\n", slave, slave->dev->name); |
1da177e4 | 4245 | |
eb7cc59a | 4246 | if (slave_ops->ndo_set_mac_address == NULL) { |
1da177e4 | 4247 | res = -EOPNOTSUPP; |
5a03cdb7 | 4248 | pr_debug("EOPNOTSUPP %s\n", slave->dev->name); |
1da177e4 LT |
4249 | goto unwind; |
4250 | } | |
4251 | ||
4252 | res = dev_set_mac_address(slave->dev, addr); | |
4253 | if (res) { | |
4254 | /* TODO: consider downing the slave | |
4255 | * and retry ? | |
4256 | * User should expect communications | |
4257 | * breakage anyway until ARP finish | |
4258 | * updating, so... | |
4259 | */ | |
5a03cdb7 | 4260 | pr_debug("err %d %s\n", res, slave->dev->name); |
1da177e4 LT |
4261 | goto unwind; |
4262 | } | |
4263 | } | |
4264 | ||
4265 | /* success */ | |
4266 | memcpy(bond_dev->dev_addr, sa->sa_data, bond_dev->addr_len); | |
4267 | return 0; | |
4268 | ||
4269 | unwind: | |
4270 | memcpy(tmp_sa.sa_data, bond_dev->dev_addr, bond_dev->addr_len); | |
4271 | tmp_sa.sa_family = bond_dev->type; | |
4272 | ||
4273 | /* unwind from head to the slave that failed */ | |
4274 | stop_at = slave; | |
4275 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { | |
4276 | int tmp_res; | |
4277 | ||
4278 | tmp_res = dev_set_mac_address(slave->dev, &tmp_sa); | |
4279 | if (tmp_res) { | |
a4aee5c8 JP |
4280 | pr_debug("unwind err %d dev %s\n", |
4281 | tmp_res, slave->dev->name); | |
1da177e4 LT |
4282 | } |
4283 | } | |
4284 | ||
4285 | return res; | |
4286 | } | |
4287 | ||
4288 | static int bond_xmit_roundrobin(struct sk_buff *skb, struct net_device *bond_dev) | |
4289 | { | |
454d7c9b | 4290 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 4291 | struct slave *slave, *start_at; |
cf5f9044 | 4292 | int i, slave_no, res = 1; |
a2fd940f | 4293 | struct iphdr *iph = ip_hdr(skb); |
1da177e4 LT |
4294 | |
4295 | read_lock(&bond->lock); | |
4296 | ||
3d632c3f | 4297 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4298 | goto out; |
cf5f9044 | 4299 | /* |
a2fd940f AG |
4300 | * Start with the curr_active_slave that joined the bond as the |
4301 | * default for sending IGMP traffic. For failover purposes one | |
4302 | * needs to maintain some consistency for the interface that will | |
4303 | * send the join/membership reports. The curr_active_slave found | |
4304 | * will send all of this type of traffic. | |
cf5f9044 | 4305 | */ |
00ae7028 | 4306 | if ((iph->protocol == IPPROTO_IGMP) && |
a2fd940f | 4307 | (skb->protocol == htons(ETH_P_IP))) { |
1da177e4 | 4308 | |
a2fd940f AG |
4309 | read_lock(&bond->curr_slave_lock); |
4310 | slave = bond->curr_active_slave; | |
4311 | read_unlock(&bond->curr_slave_lock); | |
4312 | ||
4313 | if (!slave) | |
4314 | goto out; | |
4315 | } else { | |
4316 | /* | |
4317 | * Concurrent TX may collide on rr_tx_counter; we accept | |
4318 | * that as being rare enough not to justify using an | |
4319 | * atomic op here. | |
4320 | */ | |
4321 | slave_no = bond->rr_tx_counter++ % bond->slave_cnt; | |
4322 | ||
4323 | bond_for_each_slave(bond, slave, i) { | |
4324 | slave_no--; | |
4325 | if (slave_no < 0) | |
4326 | break; | |
4327 | } | |
1da177e4 LT |
4328 | } |
4329 | ||
cf5f9044 | 4330 | start_at = slave; |
1da177e4 LT |
4331 | bond_for_each_slave_from(bond, slave, i, start_at) { |
4332 | if (IS_UP(slave->dev) && | |
4333 | (slave->link == BOND_LINK_UP) && | |
4334 | (slave->state == BOND_STATE_ACTIVE)) { | |
4335 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
1da177e4 LT |
4336 | break; |
4337 | } | |
4338 | } | |
4339 | ||
1da177e4 LT |
4340 | out: |
4341 | if (res) { | |
4342 | /* no suitable interface, frame not sent */ | |
4343 | dev_kfree_skb(skb); | |
4344 | } | |
4345 | read_unlock(&bond->lock); | |
ec634fe3 | 4346 | return NETDEV_TX_OK; |
1da177e4 LT |
4347 | } |
4348 | ||
075897ce | 4349 | |
1da177e4 LT |
4350 | /* |
4351 | * in active-backup mode, we know that bond->curr_active_slave is always valid if | |
4352 | * the bond has a usable interface. | |
4353 | */ | |
4354 | static int bond_xmit_activebackup(struct sk_buff *skb, struct net_device *bond_dev) | |
4355 | { | |
454d7c9b | 4356 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4357 | int res = 1; |
4358 | ||
1da177e4 LT |
4359 | read_lock(&bond->lock); |
4360 | read_lock(&bond->curr_slave_lock); | |
4361 | ||
3d632c3f | 4362 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4363 | goto out; |
1da177e4 | 4364 | |
075897ce JL |
4365 | if (!bond->curr_active_slave) |
4366 | goto out; | |
4367 | ||
075897ce JL |
4368 | res = bond_dev_queue_xmit(bond, skb, bond->curr_active_slave->dev); |
4369 | ||
1da177e4 | 4370 | out: |
3d632c3f | 4371 | if (res) |
1da177e4 LT |
4372 | /* no suitable interface, frame not sent */ |
4373 | dev_kfree_skb(skb); | |
3d632c3f | 4374 | |
1da177e4 LT |
4375 | read_unlock(&bond->curr_slave_lock); |
4376 | read_unlock(&bond->lock); | |
ec634fe3 | 4377 | return NETDEV_TX_OK; |
1da177e4 LT |
4378 | } |
4379 | ||
4380 | /* | |
169a3e66 JV |
4381 | * In bond_xmit_xor() , we determine the output device by using a pre- |
4382 | * determined xmit_hash_policy(), If the selected device is not enabled, | |
4383 | * find the next active slave. | |
1da177e4 LT |
4384 | */ |
4385 | static int bond_xmit_xor(struct sk_buff *skb, struct net_device *bond_dev) | |
4386 | { | |
454d7c9b | 4387 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4388 | struct slave *slave, *start_at; |
4389 | int slave_no; | |
4390 | int i; | |
4391 | int res = 1; | |
4392 | ||
4393 | read_lock(&bond->lock); | |
4394 | ||
3d632c3f | 4395 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4396 | goto out; |
1da177e4 | 4397 | |
a361c83c | 4398 | slave_no = bond->xmit_hash_policy(skb, bond->slave_cnt); |
1da177e4 LT |
4399 | |
4400 | bond_for_each_slave(bond, slave, i) { | |
4401 | slave_no--; | |
3d632c3f | 4402 | if (slave_no < 0) |
1da177e4 | 4403 | break; |
1da177e4 LT |
4404 | } |
4405 | ||
4406 | start_at = slave; | |
4407 | ||
4408 | bond_for_each_slave_from(bond, slave, i, start_at) { | |
4409 | if (IS_UP(slave->dev) && | |
4410 | (slave->link == BOND_LINK_UP) && | |
4411 | (slave->state == BOND_STATE_ACTIVE)) { | |
4412 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
4413 | break; | |
4414 | } | |
4415 | } | |
4416 | ||
4417 | out: | |
4418 | if (res) { | |
4419 | /* no suitable interface, frame not sent */ | |
4420 | dev_kfree_skb(skb); | |
4421 | } | |
4422 | read_unlock(&bond->lock); | |
ec634fe3 | 4423 | return NETDEV_TX_OK; |
1da177e4 LT |
4424 | } |
4425 | ||
4426 | /* | |
4427 | * in broadcast mode, we send everything to all usable interfaces. | |
4428 | */ | |
4429 | static int bond_xmit_broadcast(struct sk_buff *skb, struct net_device *bond_dev) | |
4430 | { | |
454d7c9b | 4431 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4432 | struct slave *slave, *start_at; |
4433 | struct net_device *tx_dev = NULL; | |
4434 | int i; | |
4435 | int res = 1; | |
4436 | ||
4437 | read_lock(&bond->lock); | |
4438 | ||
3d632c3f | 4439 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4440 | goto out; |
1da177e4 LT |
4441 | |
4442 | read_lock(&bond->curr_slave_lock); | |
4443 | start_at = bond->curr_active_slave; | |
4444 | read_unlock(&bond->curr_slave_lock); | |
4445 | ||
3d632c3f | 4446 | if (!start_at) |
1da177e4 | 4447 | goto out; |
1da177e4 LT |
4448 | |
4449 | bond_for_each_slave_from(bond, slave, i, start_at) { | |
4450 | if (IS_UP(slave->dev) && | |
4451 | (slave->link == BOND_LINK_UP) && | |
4452 | (slave->state == BOND_STATE_ACTIVE)) { | |
4453 | if (tx_dev) { | |
4454 | struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC); | |
4455 | if (!skb2) { | |
a4aee5c8 | 4456 | pr_err("%s: Error: bond_xmit_broadcast(): skb_clone() failed\n", |
4e0952c7 | 4457 | bond_dev->name); |
1da177e4 LT |
4458 | continue; |
4459 | } | |
4460 | ||
4461 | res = bond_dev_queue_xmit(bond, skb2, tx_dev); | |
4462 | if (res) { | |
4463 | dev_kfree_skb(skb2); | |
4464 | continue; | |
4465 | } | |
4466 | } | |
4467 | tx_dev = slave->dev; | |
4468 | } | |
4469 | } | |
4470 | ||
3d632c3f | 4471 | if (tx_dev) |
1da177e4 | 4472 | res = bond_dev_queue_xmit(bond, skb, tx_dev); |
1da177e4 LT |
4473 | |
4474 | out: | |
3d632c3f | 4475 | if (res) |
1da177e4 LT |
4476 | /* no suitable interface, frame not sent */ |
4477 | dev_kfree_skb(skb); | |
3d632c3f | 4478 | |
1da177e4 LT |
4479 | /* frame sent to all suitable interfaces */ |
4480 | read_unlock(&bond->lock); | |
ec634fe3 | 4481 | return NETDEV_TX_OK; |
1da177e4 LT |
4482 | } |
4483 | ||
4484 | /*------------------------- Device initialization ---------------------------*/ | |
4485 | ||
6f6652be JV |
4486 | static void bond_set_xmit_hash_policy(struct bonding *bond) |
4487 | { | |
4488 | switch (bond->params.xmit_policy) { | |
4489 | case BOND_XMIT_POLICY_LAYER23: | |
4490 | bond->xmit_hash_policy = bond_xmit_hash_policy_l23; | |
4491 | break; | |
4492 | case BOND_XMIT_POLICY_LAYER34: | |
4493 | bond->xmit_hash_policy = bond_xmit_hash_policy_l34; | |
4494 | break; | |
4495 | case BOND_XMIT_POLICY_LAYER2: | |
4496 | default: | |
4497 | bond->xmit_hash_policy = bond_xmit_hash_policy_l2; | |
4498 | break; | |
4499 | } | |
4500 | } | |
4501 | ||
bb1d9123 AG |
4502 | /* |
4503 | * Lookup the slave that corresponds to a qid | |
4504 | */ | |
4505 | static inline int bond_slave_override(struct bonding *bond, | |
4506 | struct sk_buff *skb) | |
4507 | { | |
4508 | int i, res = 1; | |
4509 | struct slave *slave = NULL; | |
4510 | struct slave *check_slave; | |
4511 | ||
4512 | read_lock(&bond->lock); | |
4513 | ||
4514 | if (!BOND_IS_OK(bond) || !skb->queue_mapping) | |
4515 | goto out; | |
4516 | ||
4517 | /* Find out if any slaves have the same mapping as this skb. */ | |
4518 | bond_for_each_slave(bond, check_slave, i) { | |
4519 | if (check_slave->queue_id == skb->queue_mapping) { | |
4520 | slave = check_slave; | |
4521 | break; | |
4522 | } | |
4523 | } | |
4524 | ||
4525 | /* If the slave isn't UP, use default transmit policy. */ | |
4526 | if (slave && slave->queue_id && IS_UP(slave->dev) && | |
4527 | (slave->link == BOND_LINK_UP)) { | |
4528 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
4529 | } | |
4530 | ||
4531 | out: | |
4532 | read_unlock(&bond->lock); | |
4533 | return res; | |
4534 | } | |
4535 | ||
4536 | static u16 bond_select_queue(struct net_device *dev, struct sk_buff *skb) | |
4537 | { | |
4538 | /* | |
4539 | * This helper function exists to help dev_pick_tx get the correct | |
4540 | * destination queue. Using a helper function skips the a call to | |
4541 | * skb_tx_hash and will put the skbs in the queue we expect on their | |
4542 | * way down to the bonding driver. | |
4543 | */ | |
4544 | return skb->queue_mapping; | |
4545 | } | |
4546 | ||
424efe9c | 4547 | static netdev_tx_t bond_start_xmit(struct sk_buff *skb, struct net_device *dev) |
00829823 | 4548 | { |
bb1d9123 AG |
4549 | struct bonding *bond = netdev_priv(dev); |
4550 | ||
e843fa50 NH |
4551 | /* |
4552 | * If we risk deadlock from transmitting this in the | |
4553 | * netpoll path, tell netpoll to queue the frame for later tx | |
4554 | */ | |
4555 | if (is_netpoll_tx_blocked(dev)) | |
4556 | return NETDEV_TX_BUSY; | |
4557 | ||
bb1d9123 AG |
4558 | if (TX_QUEUE_OVERRIDE(bond->params.mode)) { |
4559 | if (!bond_slave_override(bond, skb)) | |
4560 | return NETDEV_TX_OK; | |
4561 | } | |
00829823 SH |
4562 | |
4563 | switch (bond->params.mode) { | |
4564 | case BOND_MODE_ROUNDROBIN: | |
4565 | return bond_xmit_roundrobin(skb, dev); | |
4566 | case BOND_MODE_ACTIVEBACKUP: | |
4567 | return bond_xmit_activebackup(skb, dev); | |
4568 | case BOND_MODE_XOR: | |
4569 | return bond_xmit_xor(skb, dev); | |
4570 | case BOND_MODE_BROADCAST: | |
4571 | return bond_xmit_broadcast(skb, dev); | |
4572 | case BOND_MODE_8023AD: | |
4573 | return bond_3ad_xmit_xor(skb, dev); | |
4574 | case BOND_MODE_ALB: | |
4575 | case BOND_MODE_TLB: | |
4576 | return bond_alb_xmit(skb, dev); | |
4577 | default: | |
4578 | /* Should never happen, mode already checked */ | |
a4aee5c8 JP |
4579 | pr_err("%s: Error: Unknown bonding mode %d\n", |
4580 | dev->name, bond->params.mode); | |
00829823 SH |
4581 | WARN_ON_ONCE(1); |
4582 | dev_kfree_skb(skb); | |
4583 | return NETDEV_TX_OK; | |
4584 | } | |
4585 | } | |
4586 | ||
4587 | ||
1da177e4 LT |
4588 | /* |
4589 | * set bond mode specific net device operations | |
4590 | */ | |
a77b5325 | 4591 | void bond_set_mode_ops(struct bonding *bond, int mode) |
1da177e4 | 4592 | { |
169a3e66 JV |
4593 | struct net_device *bond_dev = bond->dev; |
4594 | ||
1da177e4 LT |
4595 | switch (mode) { |
4596 | case BOND_MODE_ROUNDROBIN: | |
1da177e4 LT |
4597 | break; |
4598 | case BOND_MODE_ACTIVEBACKUP: | |
1da177e4 LT |
4599 | break; |
4600 | case BOND_MODE_XOR: | |
6f6652be | 4601 | bond_set_xmit_hash_policy(bond); |
1da177e4 LT |
4602 | break; |
4603 | case BOND_MODE_BROADCAST: | |
1da177e4 LT |
4604 | break; |
4605 | case BOND_MODE_8023AD: | |
8f903c70 | 4606 | bond_set_master_3ad_flags(bond); |
6f6652be | 4607 | bond_set_xmit_hash_policy(bond); |
1da177e4 | 4608 | break; |
1da177e4 | 4609 | case BOND_MODE_ALB: |
8f903c70 JV |
4610 | bond_set_master_alb_flags(bond); |
4611 | /* FALLTHRU */ | |
4612 | case BOND_MODE_TLB: | |
1da177e4 LT |
4613 | break; |
4614 | default: | |
4615 | /* Should never happen, mode already checked */ | |
a4aee5c8 JP |
4616 | pr_err("%s: Error: Unknown bonding mode %d\n", |
4617 | bond_dev->name, mode); | |
1da177e4 LT |
4618 | break; |
4619 | } | |
4620 | } | |
4621 | ||
217df670 JV |
4622 | static void bond_ethtool_get_drvinfo(struct net_device *bond_dev, |
4623 | struct ethtool_drvinfo *drvinfo) | |
4624 | { | |
4625 | strncpy(drvinfo->driver, DRV_NAME, 32); | |
4626 | strncpy(drvinfo->version, DRV_VERSION, 32); | |
4627 | snprintf(drvinfo->fw_version, 32, "%d", BOND_ABI_VERSION); | |
4628 | } | |
4629 | ||
7282d491 | 4630 | static const struct ethtool_ops bond_ethtool_ops = { |
217df670 | 4631 | .get_drvinfo = bond_ethtool_get_drvinfo, |
fa53ebac SH |
4632 | .get_link = ethtool_op_get_link, |
4633 | .get_tx_csum = ethtool_op_get_tx_csum, | |
4634 | .get_sg = ethtool_op_get_sg, | |
4635 | .get_tso = ethtool_op_get_tso, | |
4636 | .get_ufo = ethtool_op_get_ufo, | |
4637 | .get_flags = ethtool_op_get_flags, | |
8531c5ff AK |
4638 | }; |
4639 | ||
eb7cc59a | 4640 | static const struct net_device_ops bond_netdev_ops = { |
181470fc | 4641 | .ndo_init = bond_init, |
9e71626c | 4642 | .ndo_uninit = bond_uninit, |
eb7cc59a SH |
4643 | .ndo_open = bond_open, |
4644 | .ndo_stop = bond_close, | |
00829823 | 4645 | .ndo_start_xmit = bond_start_xmit, |
bb1d9123 | 4646 | .ndo_select_queue = bond_select_queue, |
be1f3c2c | 4647 | .ndo_get_stats64 = bond_get_stats, |
eb7cc59a SH |
4648 | .ndo_do_ioctl = bond_do_ioctl, |
4649 | .ndo_set_multicast_list = bond_set_multicast_list, | |
4650 | .ndo_change_mtu = bond_change_mtu, | |
eb7cc59a | 4651 | .ndo_set_mac_address = bond_set_mac_address, |
00829823 | 4652 | .ndo_neigh_setup = bond_neigh_setup, |
eb7cc59a SH |
4653 | .ndo_vlan_rx_register = bond_vlan_rx_register, |
4654 | .ndo_vlan_rx_add_vid = bond_vlan_rx_add_vid, | |
4655 | .ndo_vlan_rx_kill_vid = bond_vlan_rx_kill_vid, | |
f6dc31a8 WC |
4656 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4657 | .ndo_netpoll_cleanup = bond_netpoll_cleanup, | |
4658 | .ndo_poll_controller = bond_poll_controller, | |
4659 | #endif | |
9232ecca JP |
4660 | .ndo_add_slave = bond_enslave, |
4661 | .ndo_del_slave = bond_release, | |
eb7cc59a SH |
4662 | }; |
4663 | ||
9e2e61fb AW |
4664 | static void bond_destructor(struct net_device *bond_dev) |
4665 | { | |
4666 | struct bonding *bond = netdev_priv(bond_dev); | |
4667 | if (bond->wq) | |
4668 | destroy_workqueue(bond->wq); | |
4669 | free_netdev(bond_dev); | |
4670 | } | |
4671 | ||
181470fc | 4672 | static void bond_setup(struct net_device *bond_dev) |
1da177e4 | 4673 | { |
454d7c9b | 4674 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 4675 | |
1da177e4 LT |
4676 | /* initialize rwlocks */ |
4677 | rwlock_init(&bond->lock); | |
4678 | rwlock_init(&bond->curr_slave_lock); | |
4679 | ||
d2991f75 | 4680 | bond->params = bonding_defaults; |
1da177e4 LT |
4681 | |
4682 | /* Initialize pointers */ | |
1da177e4 LT |
4683 | bond->dev = bond_dev; |
4684 | INIT_LIST_HEAD(&bond->vlan_list); | |
4685 | ||
4686 | /* Initialize the device entry points */ | |
181470fc | 4687 | ether_setup(bond_dev); |
eb7cc59a | 4688 | bond_dev->netdev_ops = &bond_netdev_ops; |
8531c5ff | 4689 | bond_dev->ethtool_ops = &bond_ethtool_ops; |
169a3e66 | 4690 | bond_set_mode_ops(bond, bond->params.mode); |
1da177e4 | 4691 | |
9e2e61fb | 4692 | bond_dev->destructor = bond_destructor; |
1da177e4 LT |
4693 | |
4694 | /* Initialize the device options */ | |
4695 | bond_dev->tx_queue_len = 0; | |
4696 | bond_dev->flags |= IFF_MASTER|IFF_MULTICAST; | |
0b680e75 | 4697 | bond_dev->priv_flags |= IFF_BONDING; |
181470fc SH |
4698 | bond_dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; |
4699 | ||
6cf3f41e JV |
4700 | if (bond->params.arp_interval) |
4701 | bond_dev->priv_flags |= IFF_MASTER_ARPMON; | |
1da177e4 LT |
4702 | |
4703 | /* At first, we block adding VLANs. That's the only way to | |
4704 | * prevent problems that occur when adding VLANs over an | |
4705 | * empty bond. The block will be removed once non-challenged | |
4706 | * slaves are enslaved. | |
4707 | */ | |
4708 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; | |
4709 | ||
932ff279 | 4710 | /* don't acquire bond device's netif_tx_lock when |
1da177e4 LT |
4711 | * transmitting */ |
4712 | bond_dev->features |= NETIF_F_LLTX; | |
4713 | ||
4714 | /* By default, we declare the bond to be fully | |
4715 | * VLAN hardware accelerated capable. Special | |
4716 | * care is taken in the various xmit functions | |
4717 | * when there are slaves that are not hw accel | |
4718 | * capable | |
4719 | */ | |
1da177e4 LT |
4720 | bond_dev->features |= (NETIF_F_HW_VLAN_TX | |
4721 | NETIF_F_HW_VLAN_RX | | |
4722 | NETIF_F_HW_VLAN_FILTER); | |
4723 | ||
e6599c2e ED |
4724 | /* By default, we enable GRO on bonding devices. |
4725 | * Actual support requires lowlevel drivers are GRO ready. | |
4726 | */ | |
4727 | bond_dev->features |= NETIF_F_GRO; | |
1da177e4 LT |
4728 | } |
4729 | ||
fdaea7a9 JV |
4730 | static void bond_work_cancel_all(struct bonding *bond) |
4731 | { | |
4732 | write_lock_bh(&bond->lock); | |
4733 | bond->kill_timers = 1; | |
4734 | write_unlock_bh(&bond->lock); | |
4735 | ||
4736 | if (bond->params.miimon && delayed_work_pending(&bond->mii_work)) | |
4737 | cancel_delayed_work(&bond->mii_work); | |
4738 | ||
4739 | if (bond->params.arp_interval && delayed_work_pending(&bond->arp_work)) | |
4740 | cancel_delayed_work(&bond->arp_work); | |
4741 | ||
4742 | if (bond->params.mode == BOND_MODE_ALB && | |
4743 | delayed_work_pending(&bond->alb_work)) | |
4744 | cancel_delayed_work(&bond->alb_work); | |
4745 | ||
4746 | if (bond->params.mode == BOND_MODE_8023AD && | |
4747 | delayed_work_pending(&bond->ad_work)) | |
4748 | cancel_delayed_work(&bond->ad_work); | |
5a37e8ca FL |
4749 | |
4750 | if (delayed_work_pending(&bond->mcast_work)) | |
4751 | cancel_delayed_work(&bond->mcast_work); | |
fdaea7a9 JV |
4752 | } |
4753 | ||
c67dfb29 EB |
4754 | /* |
4755 | * Destroy a bonding device. | |
4756 | * Must be under rtnl_lock when this function is called. | |
4757 | */ | |
4758 | static void bond_uninit(struct net_device *bond_dev) | |
a434e43f | 4759 | { |
454d7c9b | 4760 | struct bonding *bond = netdev_priv(bond_dev); |
f35188fa | 4761 | struct vlan_entry *vlan, *tmp; |
a434e43f | 4762 | |
f6dc31a8 WC |
4763 | bond_netpoll_cleanup(bond_dev); |
4764 | ||
c67dfb29 EB |
4765 | /* Release the bonded slaves */ |
4766 | bond_release_all(bond_dev); | |
4767 | ||
a434e43f JV |
4768 | list_del(&bond->bond_list); |
4769 | ||
4770 | bond_work_cancel_all(bond); | |
4771 | ||
a434e43f | 4772 | bond_remove_proc_entry(bond); |
c67dfb29 | 4773 | |
f073c7ca TI |
4774 | bond_debug_unregister(bond); |
4775 | ||
22bedad3 | 4776 | __hw_addr_flush(&bond->mc_list); |
f35188fa JV |
4777 | |
4778 | list_for_each_entry_safe(vlan, tmp, &bond->vlan_list, vlan_list) { | |
4779 | list_del(&vlan->vlan_list); | |
4780 | kfree(vlan); | |
4781 | } | |
a434e43f JV |
4782 | } |
4783 | ||
1da177e4 LT |
4784 | /*------------------------- Module initialization ---------------------------*/ |
4785 | ||
4786 | /* | |
4787 | * Convert string input module parms. Accept either the | |
ece95f7f JV |
4788 | * number of the mode or its string name. A bit complicated because |
4789 | * some mode names are substrings of other names, and calls from sysfs | |
4790 | * may have whitespace in the name (trailing newlines, for example). | |
1da177e4 | 4791 | */ |
325dcf7a | 4792 | int bond_parse_parm(const char *buf, const struct bond_parm_tbl *tbl) |
1da177e4 | 4793 | { |
54b87323 | 4794 | int modeint = -1, i, rv; |
a42e534f | 4795 | char *p, modestr[BOND_MAX_MODENAME_LEN + 1] = { 0, }; |
ece95f7f | 4796 | |
a42e534f JV |
4797 | for (p = (char *)buf; *p; p++) |
4798 | if (!(isdigit(*p) || isspace(*p))) | |
4799 | break; | |
4800 | ||
4801 | if (*p) | |
ece95f7f | 4802 | rv = sscanf(buf, "%20s", modestr); |
a42e534f | 4803 | else |
54b87323 | 4804 | rv = sscanf(buf, "%d", &modeint); |
a42e534f JV |
4805 | |
4806 | if (!rv) | |
4807 | return -1; | |
1da177e4 LT |
4808 | |
4809 | for (i = 0; tbl[i].modename; i++) { | |
54b87323 | 4810 | if (modeint == tbl[i].mode) |
ece95f7f JV |
4811 | return tbl[i].mode; |
4812 | if (strcmp(modestr, tbl[i].modename) == 0) | |
1da177e4 | 4813 | return tbl[i].mode; |
1da177e4 LT |
4814 | } |
4815 | ||
4816 | return -1; | |
4817 | } | |
4818 | ||
4819 | static int bond_check_params(struct bond_params *params) | |
4820 | { | |
a549952a | 4821 | int arp_validate_value, fail_over_mac_value, primary_reselect_value; |
f5b2b966 | 4822 | |
1da177e4 LT |
4823 | /* |
4824 | * Convert string parameters. | |
4825 | */ | |
4826 | if (mode) { | |
4827 | bond_mode = bond_parse_parm(mode, bond_mode_tbl); | |
4828 | if (bond_mode == -1) { | |
a4aee5c8 | 4829 | pr_err("Error: Invalid bonding mode \"%s\"\n", |
1da177e4 LT |
4830 | mode == NULL ? "NULL" : mode); |
4831 | return -EINVAL; | |
4832 | } | |
4833 | } | |
4834 | ||
169a3e66 JV |
4835 | if (xmit_hash_policy) { |
4836 | if ((bond_mode != BOND_MODE_XOR) && | |
4837 | (bond_mode != BOND_MODE_8023AD)) { | |
a4aee5c8 | 4838 | pr_info("xmit_hash_policy param is irrelevant in mode %s\n", |
169a3e66 JV |
4839 | bond_mode_name(bond_mode)); |
4840 | } else { | |
4841 | xmit_hashtype = bond_parse_parm(xmit_hash_policy, | |
4842 | xmit_hashtype_tbl); | |
4843 | if (xmit_hashtype == -1) { | |
a4aee5c8 | 4844 | pr_err("Error: Invalid xmit_hash_policy \"%s\"\n", |
3d632c3f | 4845 | xmit_hash_policy == NULL ? "NULL" : |
169a3e66 JV |
4846 | xmit_hash_policy); |
4847 | return -EINVAL; | |
4848 | } | |
4849 | } | |
4850 | } | |
4851 | ||
1da177e4 LT |
4852 | if (lacp_rate) { |
4853 | if (bond_mode != BOND_MODE_8023AD) { | |
a4aee5c8 JP |
4854 | pr_info("lacp_rate param is irrelevant in mode %s\n", |
4855 | bond_mode_name(bond_mode)); | |
1da177e4 LT |
4856 | } else { |
4857 | lacp_fast = bond_parse_parm(lacp_rate, bond_lacp_tbl); | |
4858 | if (lacp_fast == -1) { | |
a4aee5c8 | 4859 | pr_err("Error: Invalid lacp rate \"%s\"\n", |
1da177e4 LT |
4860 | lacp_rate == NULL ? "NULL" : lacp_rate); |
4861 | return -EINVAL; | |
4862 | } | |
4863 | } | |
4864 | } | |
4865 | ||
fd989c83 JV |
4866 | if (ad_select) { |
4867 | params->ad_select = bond_parse_parm(ad_select, ad_select_tbl); | |
4868 | if (params->ad_select == -1) { | |
a4aee5c8 | 4869 | pr_err("Error: Invalid ad_select \"%s\"\n", |
fd989c83 JV |
4870 | ad_select == NULL ? "NULL" : ad_select); |
4871 | return -EINVAL; | |
4872 | } | |
4873 | ||
4874 | if (bond_mode != BOND_MODE_8023AD) { | |
a4aee5c8 | 4875 | pr_warning("ad_select param only affects 802.3ad mode\n"); |
fd989c83 JV |
4876 | } |
4877 | } else { | |
4878 | params->ad_select = BOND_AD_STABLE; | |
4879 | } | |
4880 | ||
f5841306 | 4881 | if (max_bonds < 0) { |
a4aee5c8 JP |
4882 | pr_warning("Warning: max_bonds (%d) not in range %d-%d, so it was reset to BOND_DEFAULT_MAX_BONDS (%d)\n", |
4883 | max_bonds, 0, INT_MAX, BOND_DEFAULT_MAX_BONDS); | |
1da177e4 LT |
4884 | max_bonds = BOND_DEFAULT_MAX_BONDS; |
4885 | } | |
4886 | ||
4887 | if (miimon < 0) { | |
a4aee5c8 JP |
4888 | pr_warning("Warning: miimon module parameter (%d), not in range 0-%d, so it was reset to %d\n", |
4889 | miimon, INT_MAX, BOND_LINK_MON_INTERV); | |
1da177e4 LT |
4890 | miimon = BOND_LINK_MON_INTERV; |
4891 | } | |
4892 | ||
4893 | if (updelay < 0) { | |
a4aee5c8 JP |
4894 | pr_warning("Warning: updelay module parameter (%d), not in range 0-%d, so it was reset to 0\n", |
4895 | updelay, INT_MAX); | |
1da177e4 LT |
4896 | updelay = 0; |
4897 | } | |
4898 | ||
4899 | if (downdelay < 0) { | |
a4aee5c8 JP |
4900 | pr_warning("Warning: downdelay module parameter (%d), not in range 0-%d, so it was reset to 0\n", |
4901 | downdelay, INT_MAX); | |
1da177e4 LT |
4902 | downdelay = 0; |
4903 | } | |
4904 | ||
4905 | if ((use_carrier != 0) && (use_carrier != 1)) { | |
a4aee5c8 JP |
4906 | pr_warning("Warning: use_carrier module parameter (%d), not of valid value (0/1), so it was set to 1\n", |
4907 | use_carrier); | |
1da177e4 LT |
4908 | use_carrier = 1; |
4909 | } | |
4910 | ||
7893b249 | 4911 | if (num_grat_arp < 0 || num_grat_arp > 255) { |
2381a55c | 4912 | pr_warning("Warning: num_grat_arp (%d) not in range 0-255 so it was reset to 1\n", |
a4aee5c8 | 4913 | num_grat_arp); |
7893b249 MS |
4914 | num_grat_arp = 1; |
4915 | } | |
4916 | ||
305d552a | 4917 | if (num_unsol_na < 0 || num_unsol_na > 255) { |
2381a55c | 4918 | pr_warning("Warning: num_unsol_na (%d) not in range 0-255 so it was reset to 1\n", |
a4aee5c8 | 4919 | num_unsol_na); |
305d552a BH |
4920 | num_unsol_na = 1; |
4921 | } | |
4922 | ||
1da177e4 LT |
4923 | /* reset values for 802.3ad */ |
4924 | if (bond_mode == BOND_MODE_8023AD) { | |
4925 | if (!miimon) { | |
a4aee5c8 | 4926 | pr_warning("Warning: miimon must be specified, otherwise bonding will not detect link failure, speed and duplex which are essential for 802.3ad operation\n"); |
3d632c3f | 4927 | pr_warning("Forcing miimon to 100msec\n"); |
1da177e4 LT |
4928 | miimon = 100; |
4929 | } | |
4930 | } | |
4931 | ||
bb1d9123 AG |
4932 | if (tx_queues < 1 || tx_queues > 255) { |
4933 | pr_warning("Warning: tx_queues (%d) should be between " | |
4934 | "1 and 255, resetting to %d\n", | |
4935 | tx_queues, BOND_DEFAULT_TX_QUEUES); | |
4936 | tx_queues = BOND_DEFAULT_TX_QUEUES; | |
4937 | } | |
4938 | ||
ebd8e497 AG |
4939 | if ((all_slaves_active != 0) && (all_slaves_active != 1)) { |
4940 | pr_warning("Warning: all_slaves_active module parameter (%d), " | |
4941 | "not of valid value (0/1), so it was set to " | |
4942 | "0\n", all_slaves_active); | |
4943 | all_slaves_active = 0; | |
4944 | } | |
4945 | ||
c2952c31 FL |
4946 | if (resend_igmp < 0 || resend_igmp > 255) { |
4947 | pr_warning("Warning: resend_igmp (%d) should be between " | |
4948 | "0 and 255, resetting to %d\n", | |
4949 | resend_igmp, BOND_DEFAULT_RESEND_IGMP); | |
4950 | resend_igmp = BOND_DEFAULT_RESEND_IGMP; | |
4951 | } | |
4952 | ||
1da177e4 LT |
4953 | /* reset values for TLB/ALB */ |
4954 | if ((bond_mode == BOND_MODE_TLB) || | |
4955 | (bond_mode == BOND_MODE_ALB)) { | |
4956 | if (!miimon) { | |
a4aee5c8 | 4957 | pr_warning("Warning: miimon must be specified, otherwise bonding will not detect link failure and link speed which are essential for TLB/ALB load balancing\n"); |
3d632c3f | 4958 | pr_warning("Forcing miimon to 100msec\n"); |
1da177e4 LT |
4959 | miimon = 100; |
4960 | } | |
4961 | } | |
4962 | ||
4963 | if (bond_mode == BOND_MODE_ALB) { | |
a4aee5c8 JP |
4964 | pr_notice("In ALB mode you might experience client disconnections upon reconnection of a link if the bonding module updelay parameter (%d msec) is incompatible with the forwarding delay time of the switch\n", |
4965 | updelay); | |
1da177e4 LT |
4966 | } |
4967 | ||
4968 | if (!miimon) { | |
4969 | if (updelay || downdelay) { | |
4970 | /* just warn the user the up/down delay will have | |
4971 | * no effect since miimon is zero... | |
4972 | */ | |
a4aee5c8 JP |
4973 | pr_warning("Warning: miimon module parameter not set and updelay (%d) or downdelay (%d) module parameter is set; updelay and downdelay have no effect unless miimon is set\n", |
4974 | updelay, downdelay); | |
1da177e4 LT |
4975 | } |
4976 | } else { | |
4977 | /* don't allow arp monitoring */ | |
4978 | if (arp_interval) { | |
a4aee5c8 JP |
4979 | pr_warning("Warning: miimon (%d) and arp_interval (%d) can't be used simultaneously, disabling ARP monitoring\n", |
4980 | miimon, arp_interval); | |
1da177e4 LT |
4981 | arp_interval = 0; |
4982 | } | |
4983 | ||
4984 | if ((updelay % miimon) != 0) { | |
a4aee5c8 JP |
4985 | pr_warning("Warning: updelay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", |
4986 | updelay, miimon, | |
4987 | (updelay / miimon) * miimon); | |
1da177e4 LT |
4988 | } |
4989 | ||
4990 | updelay /= miimon; | |
4991 | ||
4992 | if ((downdelay % miimon) != 0) { | |
a4aee5c8 JP |
4993 | pr_warning("Warning: downdelay (%d) is not a multiple of miimon (%d), downdelay rounded to %d ms\n", |
4994 | downdelay, miimon, | |
4995 | (downdelay / miimon) * miimon); | |
1da177e4 LT |
4996 | } |
4997 | ||
4998 | downdelay /= miimon; | |
4999 | } | |
5000 | ||
5001 | if (arp_interval < 0) { | |
a4aee5c8 JP |
5002 | pr_warning("Warning: arp_interval module parameter (%d) , not in range 0-%d, so it was reset to %d\n", |
5003 | arp_interval, INT_MAX, BOND_LINK_ARP_INTERV); | |
1da177e4 LT |
5004 | arp_interval = BOND_LINK_ARP_INTERV; |
5005 | } | |
5006 | ||
5007 | for (arp_ip_count = 0; | |
5008 | (arp_ip_count < BOND_MAX_ARP_TARGETS) && arp_ip_target[arp_ip_count]; | |
5009 | arp_ip_count++) { | |
5010 | /* not complete check, but should be good enough to | |
5011 | catch mistakes */ | |
5012 | if (!isdigit(arp_ip_target[arp_ip_count][0])) { | |
a4aee5c8 JP |
5013 | pr_warning("Warning: bad arp_ip_target module parameter (%s), ARP monitoring will not be performed\n", |
5014 | arp_ip_target[arp_ip_count]); | |
1da177e4 LT |
5015 | arp_interval = 0; |
5016 | } else { | |
d3bb52b0 | 5017 | __be32 ip = in_aton(arp_ip_target[arp_ip_count]); |
1da177e4 LT |
5018 | arp_target[arp_ip_count] = ip; |
5019 | } | |
5020 | } | |
5021 | ||
5022 | if (arp_interval && !arp_ip_count) { | |
5023 | /* don't allow arping if no arp_ip_target given... */ | |
a4aee5c8 JP |
5024 | pr_warning("Warning: arp_interval module parameter (%d) specified without providing an arp_ip_target parameter, arp_interval was reset to 0\n", |
5025 | arp_interval); | |
1da177e4 LT |
5026 | arp_interval = 0; |
5027 | } | |
5028 | ||
f5b2b966 JV |
5029 | if (arp_validate) { |
5030 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) { | |
a4aee5c8 | 5031 | pr_err("arp_validate only supported in active-backup mode\n"); |
f5b2b966 JV |
5032 | return -EINVAL; |
5033 | } | |
5034 | if (!arp_interval) { | |
a4aee5c8 | 5035 | pr_err("arp_validate requires arp_interval\n"); |
f5b2b966 JV |
5036 | return -EINVAL; |
5037 | } | |
5038 | ||
5039 | arp_validate_value = bond_parse_parm(arp_validate, | |
5040 | arp_validate_tbl); | |
5041 | if (arp_validate_value == -1) { | |
a4aee5c8 | 5042 | pr_err("Error: invalid arp_validate \"%s\"\n", |
f5b2b966 JV |
5043 | arp_validate == NULL ? "NULL" : arp_validate); |
5044 | return -EINVAL; | |
5045 | } | |
5046 | } else | |
5047 | arp_validate_value = 0; | |
5048 | ||
1da177e4 | 5049 | if (miimon) { |
a4aee5c8 | 5050 | pr_info("MII link monitoring set to %d ms\n", miimon); |
1da177e4 LT |
5051 | } else if (arp_interval) { |
5052 | int i; | |
5053 | ||
a4aee5c8 JP |
5054 | pr_info("ARP monitoring set to %d ms, validate %s, with %d target(s):", |
5055 | arp_interval, | |
5056 | arp_validate_tbl[arp_validate_value].modename, | |
5057 | arp_ip_count); | |
1da177e4 LT |
5058 | |
5059 | for (i = 0; i < arp_ip_count; i++) | |
e5e2a8fd | 5060 | pr_info(" %s", arp_ip_target[i]); |
1da177e4 | 5061 | |
e5e2a8fd | 5062 | pr_info("\n"); |
1da177e4 | 5063 | |
b8a9787e | 5064 | } else if (max_bonds) { |
1da177e4 LT |
5065 | /* miimon and arp_interval not set, we need one so things |
5066 | * work as expected, see bonding.txt for details | |
5067 | */ | |
a4aee5c8 | 5068 | pr_warning("Warning: either miimon or arp_interval and arp_ip_target module parameters must be specified, otherwise bonding will not detect link failures! see bonding.txt for details.\n"); |
1da177e4 LT |
5069 | } |
5070 | ||
5071 | if (primary && !USES_PRIMARY(bond_mode)) { | |
5072 | /* currently, using a primary only makes sense | |
5073 | * in active backup, TLB or ALB modes | |
5074 | */ | |
a4aee5c8 JP |
5075 | pr_warning("Warning: %s primary device specified but has no effect in %s mode\n", |
5076 | primary, bond_mode_name(bond_mode)); | |
1da177e4 LT |
5077 | primary = NULL; |
5078 | } | |
5079 | ||
a549952a JP |
5080 | if (primary && primary_reselect) { |
5081 | primary_reselect_value = bond_parse_parm(primary_reselect, | |
5082 | pri_reselect_tbl); | |
5083 | if (primary_reselect_value == -1) { | |
a4aee5c8 | 5084 | pr_err("Error: Invalid primary_reselect \"%s\"\n", |
a549952a JP |
5085 | primary_reselect == |
5086 | NULL ? "NULL" : primary_reselect); | |
5087 | return -EINVAL; | |
5088 | } | |
5089 | } else { | |
5090 | primary_reselect_value = BOND_PRI_RESELECT_ALWAYS; | |
5091 | } | |
5092 | ||
3915c1e8 JV |
5093 | if (fail_over_mac) { |
5094 | fail_over_mac_value = bond_parse_parm(fail_over_mac, | |
5095 | fail_over_mac_tbl); | |
5096 | if (fail_over_mac_value == -1) { | |
a4aee5c8 | 5097 | pr_err("Error: invalid fail_over_mac \"%s\"\n", |
3915c1e8 JV |
5098 | arp_validate == NULL ? "NULL" : arp_validate); |
5099 | return -EINVAL; | |
5100 | } | |
5101 | ||
5102 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) | |
a4aee5c8 | 5103 | pr_warning("Warning: fail_over_mac only affects active-backup mode.\n"); |
3915c1e8 JV |
5104 | } else { |
5105 | fail_over_mac_value = BOND_FOM_NONE; | |
5106 | } | |
dd957c57 | 5107 | |
1da177e4 LT |
5108 | /* fill params struct with the proper values */ |
5109 | params->mode = bond_mode; | |
169a3e66 | 5110 | params->xmit_policy = xmit_hashtype; |
1da177e4 | 5111 | params->miimon = miimon; |
7893b249 | 5112 | params->num_grat_arp = num_grat_arp; |
305d552a | 5113 | params->num_unsol_na = num_unsol_na; |
1da177e4 | 5114 | params->arp_interval = arp_interval; |
f5b2b966 | 5115 | params->arp_validate = arp_validate_value; |
1da177e4 LT |
5116 | params->updelay = updelay; |
5117 | params->downdelay = downdelay; | |
5118 | params->use_carrier = use_carrier; | |
5119 | params->lacp_fast = lacp_fast; | |
5120 | params->primary[0] = 0; | |
a549952a | 5121 | params->primary_reselect = primary_reselect_value; |
3915c1e8 | 5122 | params->fail_over_mac = fail_over_mac_value; |
bb1d9123 | 5123 | params->tx_queues = tx_queues; |
ebd8e497 | 5124 | params->all_slaves_active = all_slaves_active; |
c2952c31 | 5125 | params->resend_igmp = resend_igmp; |
1da177e4 LT |
5126 | |
5127 | if (primary) { | |
5128 | strncpy(params->primary, primary, IFNAMSIZ); | |
5129 | params->primary[IFNAMSIZ - 1] = 0; | |
5130 | } | |
5131 | ||
5132 | memcpy(params->arp_targets, arp_target, sizeof(arp_target)); | |
5133 | ||
5134 | return 0; | |
5135 | } | |
5136 | ||
0daa2303 | 5137 | static struct lock_class_key bonding_netdev_xmit_lock_key; |
cf508b12 | 5138 | static struct lock_class_key bonding_netdev_addr_lock_key; |
0daa2303 | 5139 | |
e8a0464c DM |
5140 | static void bond_set_lockdep_class_one(struct net_device *dev, |
5141 | struct netdev_queue *txq, | |
5142 | void *_unused) | |
c773e847 DM |
5143 | { |
5144 | lockdep_set_class(&txq->_xmit_lock, | |
5145 | &bonding_netdev_xmit_lock_key); | |
5146 | } | |
5147 | ||
5148 | static void bond_set_lockdep_class(struct net_device *dev) | |
5149 | { | |
cf508b12 DM |
5150 | lockdep_set_class(&dev->addr_list_lock, |
5151 | &bonding_netdev_addr_lock_key); | |
e8a0464c | 5152 | netdev_for_each_tx_queue(dev, bond_set_lockdep_class_one, NULL); |
c773e847 DM |
5153 | } |
5154 | ||
181470fc SH |
5155 | /* |
5156 | * Called from registration process | |
5157 | */ | |
5158 | static int bond_init(struct net_device *bond_dev) | |
5159 | { | |
5160 | struct bonding *bond = netdev_priv(bond_dev); | |
ec87fd3b | 5161 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); |
181470fc SH |
5162 | |
5163 | pr_debug("Begin bond_init for %s\n", bond_dev->name); | |
5164 | ||
5165 | bond->wq = create_singlethread_workqueue(bond_dev->name); | |
5166 | if (!bond->wq) | |
5167 | return -ENOMEM; | |
5168 | ||
5169 | bond_set_lockdep_class(bond_dev); | |
5170 | ||
5171 | netif_carrier_off(bond_dev); | |
5172 | ||
5173 | bond_create_proc_entry(bond); | |
ec87fd3b | 5174 | list_add_tail(&bond->bond_list, &bn->dev_list); |
181470fc | 5175 | |
6151b3d4 | 5176 | bond_prepare_sysfs_group(bond); |
22bedad3 | 5177 | |
f073c7ca TI |
5178 | bond_debug_register(bond); |
5179 | ||
22bedad3 | 5180 | __hw_addr_init(&bond->mc_list); |
181470fc SH |
5181 | return 0; |
5182 | } | |
5183 | ||
88ead977 EB |
5184 | static int bond_validate(struct nlattr *tb[], struct nlattr *data[]) |
5185 | { | |
5186 | if (tb[IFLA_ADDRESS]) { | |
5187 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
5188 | return -EINVAL; | |
5189 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
5190 | return -EADDRNOTAVAIL; | |
5191 | } | |
5192 | return 0; | |
5193 | } | |
5194 | ||
5195 | static struct rtnl_link_ops bond_link_ops __read_mostly = { | |
5196 | .kind = "bond", | |
6639104b | 5197 | .priv_size = sizeof(struct bonding), |
88ead977 EB |
5198 | .setup = bond_setup, |
5199 | .validate = bond_validate, | |
5200 | }; | |
5201 | ||
dfe60397 | 5202 | /* Create a new bond based on the specified name and bonding parameters. |
e4b91c48 | 5203 | * If name is NULL, obtain a suitable "bond%d" name for us. |
dfe60397 MW |
5204 | * Caller must NOT hold rtnl_lock; we need to release it here before we |
5205 | * set up our sysfs entries. | |
5206 | */ | |
ec87fd3b | 5207 | int bond_create(struct net *net, const char *name) |
dfe60397 MW |
5208 | { |
5209 | struct net_device *bond_dev; | |
5210 | int res; | |
5211 | ||
5212 | rtnl_lock(); | |
027ea041 | 5213 | |
bb1d9123 AG |
5214 | bond_dev = alloc_netdev_mq(sizeof(struct bonding), name ? name : "", |
5215 | bond_setup, tx_queues); | |
dfe60397 | 5216 | if (!bond_dev) { |
a4aee5c8 | 5217 | pr_err("%s: eek! can't alloc netdev!\n", name); |
9e2e61fb AW |
5218 | rtnl_unlock(); |
5219 | return -ENOMEM; | |
dfe60397 MW |
5220 | } |
5221 | ||
ec87fd3b | 5222 | dev_net_set(bond_dev, net); |
88ead977 EB |
5223 | bond_dev->rtnl_link_ops = &bond_link_ops; |
5224 | ||
e4b91c48 JV |
5225 | if (!name) { |
5226 | res = dev_alloc_name(bond_dev, "bond%d"); | |
5227 | if (res < 0) | |
9e2e61fb | 5228 | goto out; |
27e6f065 NH |
5229 | } else { |
5230 | /* | |
5231 | * If we're given a name to register | |
5232 | * we need to ensure that its not already | |
5233 | * registered | |
5234 | */ | |
5235 | res = -EEXIST; | |
5236 | if (__dev_get_by_name(net, name) != NULL) | |
5237 | goto out; | |
e4b91c48 JV |
5238 | } |
5239 | ||
dfe60397 | 5240 | res = register_netdevice(bond_dev); |
0daa2303 | 5241 | |
30c15ba9 | 5242 | out: |
7e083840 | 5243 | rtnl_unlock(); |
9e2e61fb AW |
5244 | if (res < 0) |
5245 | bond_destructor(bond_dev); | |
30c15ba9 | 5246 | return res; |
dfe60397 MW |
5247 | } |
5248 | ||
2c8c1e72 | 5249 | static int __net_init bond_net_init(struct net *net) |
ec87fd3b | 5250 | { |
15449745 | 5251 | struct bond_net *bn = net_generic(net, bond_net_id); |
ec87fd3b EB |
5252 | |
5253 | bn->net = net; | |
5254 | INIT_LIST_HEAD(&bn->dev_list); | |
5255 | ||
ec87fd3b | 5256 | bond_create_proc_dir(bn); |
15449745 EB |
5257 | |
5258 | return 0; | |
ec87fd3b EB |
5259 | } |
5260 | ||
2c8c1e72 | 5261 | static void __net_exit bond_net_exit(struct net *net) |
ec87fd3b | 5262 | { |
15449745 | 5263 | struct bond_net *bn = net_generic(net, bond_net_id); |
ec87fd3b EB |
5264 | |
5265 | bond_destroy_proc_dir(bn); | |
ec87fd3b EB |
5266 | } |
5267 | ||
5268 | static struct pernet_operations bond_net_ops = { | |
5269 | .init = bond_net_init, | |
5270 | .exit = bond_net_exit, | |
15449745 EB |
5271 | .id = &bond_net_id, |
5272 | .size = sizeof(struct bond_net), | |
ec87fd3b EB |
5273 | }; |
5274 | ||
1da177e4 LT |
5275 | static int __init bonding_init(void) |
5276 | { | |
1da177e4 LT |
5277 | int i; |
5278 | int res; | |
5279 | ||
3d632c3f | 5280 | pr_info("%s", version); |
1da177e4 | 5281 | |
dfe60397 | 5282 | res = bond_check_params(&bonding_defaults); |
3d632c3f | 5283 | if (res) |
dfe60397 | 5284 | goto out; |
1da177e4 | 5285 | |
15449745 | 5286 | res = register_pernet_subsys(&bond_net_ops); |
ec87fd3b EB |
5287 | if (res) |
5288 | goto out; | |
027ea041 | 5289 | |
88ead977 EB |
5290 | res = rtnl_link_register(&bond_link_ops); |
5291 | if (res) | |
6639104b | 5292 | goto err_link; |
88ead977 | 5293 | |
f073c7ca TI |
5294 | bond_create_debugfs(); |
5295 | ||
1da177e4 | 5296 | for (i = 0; i < max_bonds; i++) { |
ec87fd3b | 5297 | res = bond_create(&init_net, NULL); |
dfe60397 MW |
5298 | if (res) |
5299 | goto err; | |
1da177e4 LT |
5300 | } |
5301 | ||
b76cdba9 MW |
5302 | res = bond_create_sysfs(); |
5303 | if (res) | |
5304 | goto err; | |
5305 | ||
1da177e4 | 5306 | register_netdevice_notifier(&bond_netdev_notifier); |
c3ade5ca | 5307 | register_inetaddr_notifier(&bond_inetaddr_notifier); |
305d552a | 5308 | bond_register_ipv6_notifier(); |
dfe60397 | 5309 | out: |
1da177e4 | 5310 | return res; |
88ead977 EB |
5311 | err: |
5312 | rtnl_link_unregister(&bond_link_ops); | |
6639104b | 5313 | err_link: |
15449745 | 5314 | unregister_pernet_subsys(&bond_net_ops); |
88ead977 | 5315 | goto out; |
dfe60397 | 5316 | |
1da177e4 LT |
5317 | } |
5318 | ||
5319 | static void __exit bonding_exit(void) | |
5320 | { | |
5321 | unregister_netdevice_notifier(&bond_netdev_notifier); | |
c3ade5ca | 5322 | unregister_inetaddr_notifier(&bond_inetaddr_notifier); |
305d552a | 5323 | bond_unregister_ipv6_notifier(); |
1da177e4 | 5324 | |
ae68c398 | 5325 | bond_destroy_sysfs(); |
f073c7ca | 5326 | bond_destroy_debugfs(); |
ae68c398 | 5327 | |
88ead977 | 5328 | rtnl_link_unregister(&bond_link_ops); |
15449745 | 5329 | unregister_pernet_subsys(&bond_net_ops); |
e843fa50 NH |
5330 | |
5331 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
fb4fa76a NH |
5332 | /* |
5333 | * Make sure we don't have an imbalance on our netpoll blocking | |
5334 | */ | |
5335 | WARN_ON(atomic_read(&netpoll_block_tx)); | |
e843fa50 | 5336 | #endif |
1da177e4 LT |
5337 | } |
5338 | ||
5339 | module_init(bonding_init); | |
5340 | module_exit(bonding_exit); | |
5341 | MODULE_LICENSE("GPL"); | |
5342 | MODULE_VERSION(DRV_VERSION); | |
5343 | MODULE_DESCRIPTION(DRV_DESCRIPTION ", v" DRV_VERSION); | |
5344 | MODULE_AUTHOR("Thomas Davis, tadavis@lbl.gov and many others"); | |
88ead977 | 5345 | MODULE_ALIAS_RTNL_LINK("bond"); |