]>
Commit | Line | Data |
---|---|---|
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 NH |
173 | #ifdef CONFIG_NET_POLL_CONTROLLER |
174 | cpumask_var_t netpoll_block_tx; | |
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 | |
3d632c3f | 421 | * |
1da177e4 LT |
422 | * When the bond gets an skb to transmit that is |
423 | * already hardware accelerated VLAN tagged, and it | |
424 | * needs to relay this skb to a slave that is not | |
425 | * hw accel capable, the skb needs to be "unaccelerated", | |
426 | * i.e. strip the hwaccel tag and re-insert it as part | |
427 | * of the payload. | |
428 | */ | |
3d632c3f SH |
429 | int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, |
430 | struct net_device *slave_dev) | |
1da177e4 | 431 | { |
966bc6f4 | 432 | unsigned short uninitialized_var(vlan_id); |
1da177e4 | 433 | |
f35188fa | 434 | /* Test vlan_list not vlgrp to catch and handle 802.1p tags */ |
1da177e4 LT |
435 | if (!list_empty(&bond->vlan_list) && |
436 | !(slave_dev->features & NETIF_F_HW_VLAN_TX) && | |
437 | vlan_get_tag(skb, &vlan_id) == 0) { | |
438 | skb->dev = slave_dev; | |
439 | skb = vlan_put_tag(skb, vlan_id); | |
440 | if (!skb) { | |
441 | /* vlan_put_tag() frees the skb in case of error, | |
442 | * so return success here so the calling functions | |
443 | * won't attempt to free is again. | |
444 | */ | |
445 | return 0; | |
446 | } | |
447 | } else { | |
448 | skb->dev = slave_dev; | |
449 | } | |
450 | ||
451 | skb->priority = 1; | |
f6dc31a8 WC |
452 | #ifdef CONFIG_NET_POLL_CONTROLLER |
453 | if (unlikely(bond->dev->priv_flags & IFF_IN_NETPOLL)) { | |
454 | struct netpoll *np = bond->dev->npinfo->netpoll; | |
455 | slave_dev->npinfo = bond->dev->npinfo; | |
f6dc31a8 | 456 | slave_dev->priv_flags |= IFF_IN_NETPOLL; |
c2355e1a | 457 | netpoll_send_skb_on_dev(np, skb, slave_dev); |
f6dc31a8 | 458 | slave_dev->priv_flags &= ~IFF_IN_NETPOLL; |
f6dc31a8 WC |
459 | } else |
460 | #endif | |
461 | dev_queue_xmit(skb); | |
1da177e4 LT |
462 | |
463 | return 0; | |
464 | } | |
465 | ||
466 | /* | |
467 | * In the following 3 functions, bond_vlan_rx_register(), bond_vlan_rx_add_vid | |
468 | * and bond_vlan_rx_kill_vid, We don't protect the slave list iteration with a | |
469 | * lock because: | |
470 | * a. This operation is performed in IOCTL context, | |
471 | * b. The operation is protected by the RTNL semaphore in the 8021q code, | |
472 | * c. Holding a lock with BH disabled while directly calling a base driver | |
473 | * entry point is generally a BAD idea. | |
3d632c3f | 474 | * |
1da177e4 LT |
475 | * The design of synchronization/protection for this operation in the 8021q |
476 | * module is good for one or more VLAN devices over a single physical device | |
477 | * and cannot be extended for a teaming solution like bonding, so there is a | |
478 | * potential race condition here where a net device from the vlan group might | |
479 | * be referenced (either by a base driver or the 8021q code) while it is being | |
480 | * removed from the system. However, it turns out we're not making matters | |
481 | * worse, and if it works for regular VLAN usage it will work here too. | |
482 | */ | |
483 | ||
484 | /** | |
485 | * bond_vlan_rx_register - Propagates registration to slaves | |
486 | * @bond_dev: bonding net device that got called | |
487 | * @grp: vlan group being registered | |
488 | */ | |
3d632c3f SH |
489 | static void bond_vlan_rx_register(struct net_device *bond_dev, |
490 | struct vlan_group *grp) | |
1da177e4 | 491 | { |
454d7c9b | 492 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
493 | struct slave *slave; |
494 | int i; | |
495 | ||
f35188fa | 496 | write_lock(&bond->lock); |
1da177e4 | 497 | bond->vlgrp = grp; |
f35188fa | 498 | write_unlock(&bond->lock); |
1da177e4 LT |
499 | |
500 | bond_for_each_slave(bond, slave, i) { | |
501 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 502 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
503 | |
504 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
505 | slave_ops->ndo_vlan_rx_register) { |
506 | slave_ops->ndo_vlan_rx_register(slave_dev, grp); | |
1da177e4 LT |
507 | } |
508 | } | |
509 | } | |
510 | ||
511 | /** | |
512 | * bond_vlan_rx_add_vid - Propagates adding an id to slaves | |
513 | * @bond_dev: bonding net device that got called | |
514 | * @vid: vlan id being added | |
515 | */ | |
516 | static void bond_vlan_rx_add_vid(struct net_device *bond_dev, uint16_t vid) | |
517 | { | |
454d7c9b | 518 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
519 | struct slave *slave; |
520 | int i, res; | |
521 | ||
522 | bond_for_each_slave(bond, slave, i) { | |
523 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 524 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
525 | |
526 | if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && | |
eb7cc59a SH |
527 | slave_ops->ndo_vlan_rx_add_vid) { |
528 | slave_ops->ndo_vlan_rx_add_vid(slave_dev, vid); | |
1da177e4 LT |
529 | } |
530 | } | |
531 | ||
532 | res = bond_add_vlan(bond, vid); | |
533 | if (res) { | |
a4aee5c8 | 534 | pr_err("%s: Error: Failed to add vlan id %d\n", |
1da177e4 LT |
535 | bond_dev->name, vid); |
536 | } | |
537 | } | |
538 | ||
539 | /** | |
540 | * bond_vlan_rx_kill_vid - Propagates deleting an id to slaves | |
541 | * @bond_dev: bonding net device that got called | |
542 | * @vid: vlan id being removed | |
543 | */ | |
544 | static void bond_vlan_rx_kill_vid(struct net_device *bond_dev, uint16_t vid) | |
545 | { | |
454d7c9b | 546 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
547 | struct slave *slave; |
548 | struct net_device *vlan_dev; | |
549 | int i, res; | |
550 | ||
551 | bond_for_each_slave(bond, slave, i) { | |
552 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 553 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
554 | |
555 | if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && | |
eb7cc59a | 556 | slave_ops->ndo_vlan_rx_kill_vid) { |
1da177e4 LT |
557 | /* Save and then restore vlan_dev in the grp array, |
558 | * since the slave's driver might clear it. | |
559 | */ | |
5c15bdec | 560 | vlan_dev = vlan_group_get_device(bond->vlgrp, vid); |
eb7cc59a | 561 | slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vid); |
5c15bdec | 562 | vlan_group_set_device(bond->vlgrp, vid, vlan_dev); |
1da177e4 LT |
563 | } |
564 | } | |
565 | ||
566 | res = bond_del_vlan(bond, vid); | |
567 | if (res) { | |
a4aee5c8 | 568 | pr_err("%s: Error: Failed to remove vlan id %d\n", |
1da177e4 LT |
569 | bond_dev->name, vid); |
570 | } | |
571 | } | |
572 | ||
573 | static void bond_add_vlans_on_slave(struct bonding *bond, struct net_device *slave_dev) | |
574 | { | |
575 | struct vlan_entry *vlan; | |
eb7cc59a | 576 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 | 577 | |
f35188fa | 578 | if (!bond->vlgrp) |
03dc2f4c | 579 | return; |
1da177e4 LT |
580 | |
581 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
582 | slave_ops->ndo_vlan_rx_register) |
583 | slave_ops->ndo_vlan_rx_register(slave_dev, bond->vlgrp); | |
1da177e4 LT |
584 | |
585 | if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || | |
eb7cc59a | 586 | !(slave_ops->ndo_vlan_rx_add_vid)) |
03dc2f4c | 587 | return; |
1da177e4 | 588 | |
eb7cc59a SH |
589 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) |
590 | slave_ops->ndo_vlan_rx_add_vid(slave_dev, vlan->vlan_id); | |
1da177e4 LT |
591 | } |
592 | ||
3d632c3f SH |
593 | static void bond_del_vlans_from_slave(struct bonding *bond, |
594 | struct net_device *slave_dev) | |
1da177e4 | 595 | { |
eb7cc59a | 596 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
597 | struct vlan_entry *vlan; |
598 | struct net_device *vlan_dev; | |
599 | ||
f35188fa | 600 | if (!bond->vlgrp) |
03dc2f4c | 601 | return; |
1da177e4 LT |
602 | |
603 | if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || | |
eb7cc59a | 604 | !(slave_ops->ndo_vlan_rx_kill_vid)) |
1da177e4 | 605 | goto unreg; |
1da177e4 LT |
606 | |
607 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { | |
f35188fa JV |
608 | if (!vlan->vlan_id) |
609 | continue; | |
1da177e4 LT |
610 | /* Save and then restore vlan_dev in the grp array, |
611 | * since the slave's driver might clear it. | |
612 | */ | |
5c15bdec | 613 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
eb7cc59a | 614 | slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vlan->vlan_id); |
5c15bdec | 615 | vlan_group_set_device(bond->vlgrp, vlan->vlan_id, vlan_dev); |
1da177e4 LT |
616 | } |
617 | ||
618 | unreg: | |
619 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
620 | slave_ops->ndo_vlan_rx_register) |
621 | slave_ops->ndo_vlan_rx_register(slave_dev, NULL); | |
1da177e4 LT |
622 | } |
623 | ||
624 | /*------------------------------- Link status -------------------------------*/ | |
625 | ||
ff59c456 JV |
626 | /* |
627 | * Set the carrier state for the master according to the state of its | |
628 | * slaves. If any slaves are up, the master is up. In 802.3ad mode, | |
629 | * do special 802.3ad magic. | |
630 | * | |
631 | * Returns zero if carrier state does not change, nonzero if it does. | |
632 | */ | |
633 | static int bond_set_carrier(struct bonding *bond) | |
634 | { | |
635 | struct slave *slave; | |
636 | int i; | |
637 | ||
638 | if (bond->slave_cnt == 0) | |
639 | goto down; | |
640 | ||
641 | if (bond->params.mode == BOND_MODE_8023AD) | |
642 | return bond_3ad_set_carrier(bond); | |
643 | ||
644 | bond_for_each_slave(bond, slave, i) { | |
645 | if (slave->link == BOND_LINK_UP) { | |
646 | if (!netif_carrier_ok(bond->dev)) { | |
647 | netif_carrier_on(bond->dev); | |
648 | return 1; | |
649 | } | |
650 | return 0; | |
651 | } | |
652 | } | |
653 | ||
654 | down: | |
655 | if (netif_carrier_ok(bond->dev)) { | |
656 | netif_carrier_off(bond->dev); | |
657 | return 1; | |
658 | } | |
659 | return 0; | |
660 | } | |
661 | ||
1da177e4 LT |
662 | /* |
663 | * Get link speed and duplex from the slave's base driver | |
664 | * using ethtool. If for some reason the call fails or the | |
665 | * values are invalid, fake speed and duplex to 100/Full | |
666 | * and return error. | |
667 | */ | |
668 | static int bond_update_speed_duplex(struct slave *slave) | |
669 | { | |
670 | struct net_device *slave_dev = slave->dev; | |
1da177e4 | 671 | struct ethtool_cmd etool; |
61a44b9c | 672 | int res; |
1da177e4 LT |
673 | |
674 | /* Fake speed and duplex */ | |
675 | slave->speed = SPEED_100; | |
676 | slave->duplex = DUPLEX_FULL; | |
677 | ||
61a44b9c MW |
678 | if (!slave_dev->ethtool_ops || !slave_dev->ethtool_ops->get_settings) |
679 | return -1; | |
1da177e4 | 680 | |
61a44b9c MW |
681 | res = slave_dev->ethtool_ops->get_settings(slave_dev, &etool); |
682 | if (res < 0) | |
1da177e4 | 683 | return -1; |
1da177e4 | 684 | |
1da177e4 LT |
685 | switch (etool.speed) { |
686 | case SPEED_10: | |
687 | case SPEED_100: | |
688 | case SPEED_1000: | |
94dbffd5 | 689 | case SPEED_10000: |
1da177e4 LT |
690 | break; |
691 | default: | |
692 | return -1; | |
693 | } | |
694 | ||
695 | switch (etool.duplex) { | |
696 | case DUPLEX_FULL: | |
697 | case DUPLEX_HALF: | |
698 | break; | |
699 | default: | |
700 | return -1; | |
701 | } | |
702 | ||
703 | slave->speed = etool.speed; | |
704 | slave->duplex = etool.duplex; | |
705 | ||
706 | return 0; | |
707 | } | |
708 | ||
709 | /* | |
710 | * if <dev> supports MII link status reporting, check its link status. | |
711 | * | |
712 | * We either do MII/ETHTOOL ioctls, or check netif_carrier_ok(), | |
3d632c3f | 713 | * depending upon the setting of the use_carrier parameter. |
1da177e4 LT |
714 | * |
715 | * Return either BMSR_LSTATUS, meaning that the link is up (or we | |
716 | * can't tell and just pretend it is), or 0, meaning that the link is | |
717 | * down. | |
718 | * | |
719 | * If reporting is non-zero, instead of faking link up, return -1 if | |
720 | * both ETHTOOL and MII ioctls fail (meaning the device does not | |
721 | * support them). If use_carrier is set, return whatever it says. | |
722 | * It'd be nice if there was a good way to tell if a driver supports | |
723 | * netif_carrier, but there really isn't. | |
724 | */ | |
3d632c3f SH |
725 | static int bond_check_dev_link(struct bonding *bond, |
726 | struct net_device *slave_dev, int reporting) | |
1da177e4 | 727 | { |
eb7cc59a | 728 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
d9d52832 | 729 | int (*ioctl)(struct net_device *, struct ifreq *, int); |
1da177e4 LT |
730 | struct ifreq ifr; |
731 | struct mii_ioctl_data *mii; | |
1da177e4 | 732 | |
6c988853 PG |
733 | if (!reporting && !netif_running(slave_dev)) |
734 | return 0; | |
735 | ||
eb7cc59a | 736 | if (bond->params.use_carrier) |
1da177e4 | 737 | return netif_carrier_ok(slave_dev) ? BMSR_LSTATUS : 0; |
1da177e4 | 738 | |
29112f4e JP |
739 | /* Try to get link status using Ethtool first. */ |
740 | if (slave_dev->ethtool_ops) { | |
741 | if (slave_dev->ethtool_ops->get_link) { | |
742 | u32 link; | |
743 | ||
744 | link = slave_dev->ethtool_ops->get_link(slave_dev); | |
745 | ||
746 | return link ? BMSR_LSTATUS : 0; | |
747 | } | |
748 | } | |
749 | ||
3d632c3f | 750 | /* Ethtool can't be used, fallback to MII ioctls. */ |
eb7cc59a | 751 | ioctl = slave_ops->ndo_do_ioctl; |
1da177e4 LT |
752 | if (ioctl) { |
753 | /* TODO: set pointer to correct ioctl on a per team member */ | |
754 | /* bases to make this more efficient. that is, once */ | |
755 | /* we determine the correct ioctl, we will always */ | |
756 | /* call it and not the others for that team */ | |
757 | /* member. */ | |
758 | ||
759 | /* | |
760 | * We cannot assume that SIOCGMIIPHY will also read a | |
761 | * register; not all network drivers (e.g., e100) | |
762 | * support that. | |
763 | */ | |
764 | ||
765 | /* Yes, the mii is overlaid on the ifreq.ifr_ifru */ | |
766 | strncpy(ifr.ifr_name, slave_dev->name, IFNAMSIZ); | |
767 | mii = if_mii(&ifr); | |
768 | if (IOCTL(slave_dev, &ifr, SIOCGMIIPHY) == 0) { | |
769 | mii->reg_num = MII_BMSR; | |
3d632c3f SH |
770 | if (IOCTL(slave_dev, &ifr, SIOCGMIIREG) == 0) |
771 | return mii->val_out & BMSR_LSTATUS; | |
1da177e4 LT |
772 | } |
773 | } | |
774 | ||
1da177e4 LT |
775 | /* |
776 | * If reporting, report that either there's no dev->do_ioctl, | |
61a44b9c | 777 | * or both SIOCGMIIREG and get_link failed (meaning that we |
1da177e4 LT |
778 | * cannot report link status). If not reporting, pretend |
779 | * we're ok. | |
780 | */ | |
3d632c3f | 781 | return reporting ? -1 : BMSR_LSTATUS; |
1da177e4 LT |
782 | } |
783 | ||
784 | /*----------------------------- Multicast list ------------------------------*/ | |
785 | ||
1da177e4 LT |
786 | /* |
787 | * Push the promiscuity flag down to appropriate slaves | |
788 | */ | |
7e1a1ac1 | 789 | static int bond_set_promiscuity(struct bonding *bond, int inc) |
1da177e4 | 790 | { |
7e1a1ac1 | 791 | int err = 0; |
1da177e4 LT |
792 | if (USES_PRIMARY(bond->params.mode)) { |
793 | /* write lock already acquired */ | |
794 | if (bond->curr_active_slave) { | |
7e1a1ac1 WC |
795 | err = dev_set_promiscuity(bond->curr_active_slave->dev, |
796 | inc); | |
1da177e4 LT |
797 | } |
798 | } else { | |
799 | struct slave *slave; | |
800 | int i; | |
801 | bond_for_each_slave(bond, slave, i) { | |
7e1a1ac1 WC |
802 | err = dev_set_promiscuity(slave->dev, inc); |
803 | if (err) | |
804 | return err; | |
1da177e4 LT |
805 | } |
806 | } | |
7e1a1ac1 | 807 | return err; |
1da177e4 LT |
808 | } |
809 | ||
810 | /* | |
811 | * Push the allmulti flag down to all slaves | |
812 | */ | |
7e1a1ac1 | 813 | static int bond_set_allmulti(struct bonding *bond, int inc) |
1da177e4 | 814 | { |
7e1a1ac1 | 815 | int err = 0; |
1da177e4 LT |
816 | if (USES_PRIMARY(bond->params.mode)) { |
817 | /* write lock already acquired */ | |
818 | if (bond->curr_active_slave) { | |
7e1a1ac1 WC |
819 | err = dev_set_allmulti(bond->curr_active_slave->dev, |
820 | inc); | |
1da177e4 LT |
821 | } |
822 | } else { | |
823 | struct slave *slave; | |
824 | int i; | |
825 | bond_for_each_slave(bond, slave, i) { | |
7e1a1ac1 WC |
826 | err = dev_set_allmulti(slave->dev, inc); |
827 | if (err) | |
828 | return err; | |
1da177e4 LT |
829 | } |
830 | } | |
7e1a1ac1 | 831 | return err; |
1da177e4 LT |
832 | } |
833 | ||
834 | /* | |
835 | * Add a Multicast address to slaves | |
836 | * according to mode | |
837 | */ | |
22bedad3 | 838 | static void bond_mc_add(struct bonding *bond, void *addr) |
1da177e4 LT |
839 | { |
840 | if (USES_PRIMARY(bond->params.mode)) { | |
841 | /* write lock already acquired */ | |
3d632c3f | 842 | if (bond->curr_active_slave) |
22bedad3 | 843 | dev_mc_add(bond->curr_active_slave->dev, addr); |
1da177e4 LT |
844 | } else { |
845 | struct slave *slave; | |
846 | int i; | |
3d632c3f SH |
847 | |
848 | bond_for_each_slave(bond, slave, i) | |
22bedad3 | 849 | dev_mc_add(slave->dev, addr); |
1da177e4 LT |
850 | } |
851 | } | |
852 | ||
853 | /* | |
854 | * Remove a multicast address from slave | |
855 | * according to mode | |
856 | */ | |
22bedad3 | 857 | static void bond_mc_del(struct bonding *bond, void *addr) |
1da177e4 LT |
858 | { |
859 | if (USES_PRIMARY(bond->params.mode)) { | |
860 | /* write lock already acquired */ | |
3d632c3f | 861 | if (bond->curr_active_slave) |
22bedad3 | 862 | dev_mc_del(bond->curr_active_slave->dev, addr); |
1da177e4 LT |
863 | } else { |
864 | struct slave *slave; | |
865 | int i; | |
866 | bond_for_each_slave(bond, slave, i) { | |
22bedad3 | 867 | dev_mc_del(slave->dev, addr); |
1da177e4 LT |
868 | } |
869 | } | |
870 | } | |
871 | ||
a816c7c7 | 872 | |
5a37e8ca | 873 | static void __bond_resend_igmp_join_requests(struct net_device *dev) |
a816c7c7 JV |
874 | { |
875 | struct in_device *in_dev; | |
876 | struct ip_mc_list *im; | |
877 | ||
878 | rcu_read_lock(); | |
5a37e8ca | 879 | in_dev = __in_dev_get_rcu(dev); |
a816c7c7 | 880 | if (in_dev) { |
3d632c3f | 881 | for (im = in_dev->mc_list; im; im = im->next) |
a816c7c7 | 882 | ip_mc_rejoin_group(im); |
a816c7c7 JV |
883 | } |
884 | ||
885 | rcu_read_unlock(); | |
886 | } | |
887 | ||
5a37e8ca FL |
888 | /* |
889 | * Retrieve the list of registered multicast addresses for the bonding | |
890 | * device and retransmit an IGMP JOIN request to the current active | |
891 | * slave. | |
892 | */ | |
893 | static void bond_resend_igmp_join_requests(struct bonding *bond) | |
894 | { | |
895 | struct net_device *vlan_dev; | |
896 | struct vlan_entry *vlan; | |
897 | ||
898 | read_lock(&bond->lock); | |
899 | ||
900 | /* rejoin all groups on bond device */ | |
901 | __bond_resend_igmp_join_requests(bond->dev); | |
902 | ||
903 | /* rejoin all groups on vlan devices */ | |
904 | if (bond->vlgrp) { | |
905 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { | |
906 | vlan_dev = vlan_group_get_device(bond->vlgrp, | |
907 | vlan->vlan_id); | |
908 | if (vlan_dev) | |
909 | __bond_resend_igmp_join_requests(vlan_dev); | |
910 | } | |
911 | } | |
912 | ||
c2952c31 FL |
913 | if (--bond->igmp_retrans > 0) |
914 | queue_delayed_work(bond->wq, &bond->mcast_work, HZ/5); | |
915 | ||
5a37e8ca FL |
916 | read_unlock(&bond->lock); |
917 | } | |
918 | ||
379b7383 | 919 | static void bond_resend_igmp_join_requests_delayed(struct work_struct *work) |
5a37e8ca FL |
920 | { |
921 | struct bonding *bond = container_of(work, struct bonding, | |
922 | mcast_work.work); | |
923 | bond_resend_igmp_join_requests(bond); | |
924 | } | |
925 | ||
1da177e4 LT |
926 | /* |
927 | * flush all members of flush->mc_list from device dev->mc_list | |
928 | */ | |
3d632c3f SH |
929 | static void bond_mc_list_flush(struct net_device *bond_dev, |
930 | struct net_device *slave_dev) | |
1da177e4 | 931 | { |
454d7c9b | 932 | struct bonding *bond = netdev_priv(bond_dev); |
22bedad3 | 933 | struct netdev_hw_addr *ha; |
1da177e4 | 934 | |
22bedad3 JP |
935 | netdev_for_each_mc_addr(ha, bond_dev) |
936 | dev_mc_del(slave_dev, ha->addr); | |
1da177e4 LT |
937 | |
938 | if (bond->params.mode == BOND_MODE_8023AD) { | |
939 | /* del lacpdu mc addr from mc list */ | |
940 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; | |
941 | ||
22bedad3 | 942 | dev_mc_del(slave_dev, lacpdu_multicast); |
1da177e4 LT |
943 | } |
944 | } | |
945 | ||
946 | /*--------------------------- Active slave change ---------------------------*/ | |
947 | ||
948 | /* | |
949 | * Update the mc list and multicast-related flags for the new and | |
950 | * old active slaves (if any) according to the multicast mode, and | |
951 | * promiscuous flags unconditionally. | |
952 | */ | |
3d632c3f SH |
953 | static void bond_mc_swap(struct bonding *bond, struct slave *new_active, |
954 | struct slave *old_active) | |
1da177e4 | 955 | { |
22bedad3 | 956 | struct netdev_hw_addr *ha; |
1da177e4 | 957 | |
3d632c3f | 958 | if (!USES_PRIMARY(bond->params.mode)) |
1da177e4 LT |
959 | /* nothing to do - mc list is already up-to-date on |
960 | * all slaves | |
961 | */ | |
962 | return; | |
1da177e4 LT |
963 | |
964 | if (old_active) { | |
3d632c3f | 965 | if (bond->dev->flags & IFF_PROMISC) |
1da177e4 | 966 | dev_set_promiscuity(old_active->dev, -1); |
1da177e4 | 967 | |
3d632c3f | 968 | if (bond->dev->flags & IFF_ALLMULTI) |
1da177e4 | 969 | dev_set_allmulti(old_active->dev, -1); |
1da177e4 | 970 | |
22bedad3 JP |
971 | netdev_for_each_mc_addr(ha, bond->dev) |
972 | dev_mc_del(old_active->dev, ha->addr); | |
1da177e4 LT |
973 | } |
974 | ||
975 | if (new_active) { | |
7e1a1ac1 | 976 | /* FIXME: Signal errors upstream. */ |
3d632c3f | 977 | if (bond->dev->flags & IFF_PROMISC) |
1da177e4 | 978 | dev_set_promiscuity(new_active->dev, 1); |
1da177e4 | 979 | |
3d632c3f | 980 | if (bond->dev->flags & IFF_ALLMULTI) |
1da177e4 | 981 | dev_set_allmulti(new_active->dev, 1); |
1da177e4 | 982 | |
22bedad3 JP |
983 | netdev_for_each_mc_addr(ha, bond->dev) |
984 | dev_mc_add(new_active->dev, ha->addr); | |
1da177e4 LT |
985 | } |
986 | } | |
987 | ||
3915c1e8 JV |
988 | /* |
989 | * bond_do_fail_over_mac | |
990 | * | |
991 | * Perform special MAC address swapping for fail_over_mac settings | |
992 | * | |
993 | * Called with RTNL, bond->lock for read, curr_slave_lock for write_bh. | |
994 | */ | |
995 | static void bond_do_fail_over_mac(struct bonding *bond, | |
996 | struct slave *new_active, | |
997 | struct slave *old_active) | |
1f78d9f9 HE |
998 | __releases(&bond->curr_slave_lock) |
999 | __releases(&bond->lock) | |
1000 | __acquires(&bond->lock) | |
1001 | __acquires(&bond->curr_slave_lock) | |
3915c1e8 JV |
1002 | { |
1003 | u8 tmp_mac[ETH_ALEN]; | |
1004 | struct sockaddr saddr; | |
1005 | int rv; | |
1006 | ||
1007 | switch (bond->params.fail_over_mac) { | |
1008 | case BOND_FOM_ACTIVE: | |
1009 | if (new_active) | |
1010 | memcpy(bond->dev->dev_addr, new_active->dev->dev_addr, | |
1011 | new_active->dev->addr_len); | |
1012 | break; | |
1013 | case BOND_FOM_FOLLOW: | |
1014 | /* | |
1015 | * if new_active && old_active, swap them | |
1016 | * if just old_active, do nothing (going to no active slave) | |
1017 | * if just new_active, set new_active to bond's MAC | |
1018 | */ | |
1019 | if (!new_active) | |
1020 | return; | |
1021 | ||
1022 | write_unlock_bh(&bond->curr_slave_lock); | |
1023 | read_unlock(&bond->lock); | |
1024 | ||
1025 | if (old_active) { | |
1026 | memcpy(tmp_mac, new_active->dev->dev_addr, ETH_ALEN); | |
1027 | memcpy(saddr.sa_data, old_active->dev->dev_addr, | |
1028 | ETH_ALEN); | |
1029 | saddr.sa_family = new_active->dev->type; | |
1030 | } else { | |
1031 | memcpy(saddr.sa_data, bond->dev->dev_addr, ETH_ALEN); | |
1032 | saddr.sa_family = bond->dev->type; | |
1033 | } | |
1034 | ||
1035 | rv = dev_set_mac_address(new_active->dev, &saddr); | |
1036 | if (rv) { | |
a4aee5c8 | 1037 | pr_err("%s: Error %d setting MAC of slave %s\n", |
3915c1e8 JV |
1038 | bond->dev->name, -rv, new_active->dev->name); |
1039 | goto out; | |
1040 | } | |
1041 | ||
1042 | if (!old_active) | |
1043 | goto out; | |
1044 | ||
1045 | memcpy(saddr.sa_data, tmp_mac, ETH_ALEN); | |
1046 | saddr.sa_family = old_active->dev->type; | |
1047 | ||
1048 | rv = dev_set_mac_address(old_active->dev, &saddr); | |
1049 | if (rv) | |
a4aee5c8 | 1050 | pr_err("%s: Error %d setting MAC of slave %s\n", |
3915c1e8 JV |
1051 | bond->dev->name, -rv, new_active->dev->name); |
1052 | out: | |
1053 | read_lock(&bond->lock); | |
1054 | write_lock_bh(&bond->curr_slave_lock); | |
1055 | break; | |
1056 | default: | |
a4aee5c8 | 1057 | pr_err("%s: bond_do_fail_over_mac impossible: bad policy %d\n", |
3915c1e8 JV |
1058 | bond->dev->name, bond->params.fail_over_mac); |
1059 | break; | |
1060 | } | |
1061 | ||
1062 | } | |
1063 | ||
a549952a JP |
1064 | static bool bond_should_change_active(struct bonding *bond) |
1065 | { | |
1066 | struct slave *prim = bond->primary_slave; | |
1067 | struct slave *curr = bond->curr_active_slave; | |
1068 | ||
1069 | if (!prim || !curr || curr->link != BOND_LINK_UP) | |
1070 | return true; | |
1071 | if (bond->force_primary) { | |
1072 | bond->force_primary = false; | |
1073 | return true; | |
1074 | } | |
1075 | if (bond->params.primary_reselect == BOND_PRI_RESELECT_BETTER && | |
1076 | (prim->speed < curr->speed || | |
1077 | (prim->speed == curr->speed && prim->duplex <= curr->duplex))) | |
1078 | return false; | |
1079 | if (bond->params.primary_reselect == BOND_PRI_RESELECT_FAILURE) | |
1080 | return false; | |
1081 | return true; | |
1082 | } | |
3915c1e8 | 1083 | |
1da177e4 LT |
1084 | /** |
1085 | * find_best_interface - select the best available slave to be the active one | |
1086 | * @bond: our bonding struct | |
1087 | * | |
1088 | * Warning: Caller must hold curr_slave_lock for writing. | |
1089 | */ | |
1090 | static struct slave *bond_find_best_slave(struct bonding *bond) | |
1091 | { | |
1092 | struct slave *new_active, *old_active; | |
1093 | struct slave *bestslave = NULL; | |
1094 | int mintime = bond->params.updelay; | |
1095 | int i; | |
1096 | ||
49b4ad92 | 1097 | new_active = bond->curr_active_slave; |
1da177e4 LT |
1098 | |
1099 | if (!new_active) { /* there were no active slaves left */ | |
3d632c3f | 1100 | if (bond->slave_cnt > 0) /* found one slave */ |
1da177e4 | 1101 | new_active = bond->first_slave; |
3d632c3f | 1102 | else |
1da177e4 | 1103 | return NULL; /* still no slave, return NULL */ |
1da177e4 LT |
1104 | } |
1105 | ||
1da177e4 | 1106 | if ((bond->primary_slave) && |
a549952a JP |
1107 | bond->primary_slave->link == BOND_LINK_UP && |
1108 | bond_should_change_active(bond)) { | |
1da177e4 LT |
1109 | new_active = bond->primary_slave; |
1110 | } | |
1111 | ||
1112 | /* remember where to stop iterating over the slaves */ | |
1113 | old_active = new_active; | |
1114 | ||
1115 | bond_for_each_slave_from(bond, new_active, i, old_active) { | |
b9f60253 JP |
1116 | if (new_active->link == BOND_LINK_UP) { |
1117 | return new_active; | |
1118 | } else if (new_active->link == BOND_LINK_BACK && | |
1119 | IS_UP(new_active->dev)) { | |
1120 | /* link up, but waiting for stabilization */ | |
1121 | if (new_active->delay < mintime) { | |
1122 | mintime = new_active->delay; | |
1123 | bestslave = new_active; | |
1da177e4 LT |
1124 | } |
1125 | } | |
1126 | } | |
1127 | ||
1128 | return bestslave; | |
1129 | } | |
1130 | ||
1131 | /** | |
1132 | * change_active_interface - change the active slave into the specified one | |
1133 | * @bond: our bonding struct | |
1134 | * @new: the new slave to make the active one | |
1135 | * | |
1136 | * Set the new slave to the bond's settings and unset them on the old | |
1137 | * curr_active_slave. | |
1138 | * Setting include flags, mc-list, promiscuity, allmulti, etc. | |
1139 | * | |
1140 | * If @new's link state is %BOND_LINK_BACK we'll set it to %BOND_LINK_UP, | |
1141 | * because it is apparently the best available slave we have, even though its | |
1142 | * updelay hasn't timed out yet. | |
1143 | * | |
3915c1e8 JV |
1144 | * If new_active is not NULL, caller must hold bond->lock for read and |
1145 | * curr_slave_lock for write_bh. | |
1da177e4 | 1146 | */ |
a77b5325 | 1147 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active) |
1da177e4 LT |
1148 | { |
1149 | struct slave *old_active = bond->curr_active_slave; | |
1150 | ||
3d632c3f | 1151 | if (old_active == new_active) |
1da177e4 | 1152 | return; |
1da177e4 LT |
1153 | |
1154 | if (new_active) { | |
b2220cad JV |
1155 | new_active->jiffies = jiffies; |
1156 | ||
1da177e4 LT |
1157 | if (new_active->link == BOND_LINK_BACK) { |
1158 | if (USES_PRIMARY(bond->params.mode)) { | |
a4aee5c8 JP |
1159 | pr_info("%s: making interface %s the new active one %d ms earlier.\n", |
1160 | bond->dev->name, new_active->dev->name, | |
1161 | (bond->params.updelay - new_active->delay) * bond->params.miimon); | |
1da177e4 LT |
1162 | } |
1163 | ||
1164 | new_active->delay = 0; | |
1165 | new_active->link = BOND_LINK_UP; | |
1da177e4 | 1166 | |
3d632c3f | 1167 | if (bond->params.mode == BOND_MODE_8023AD) |
1da177e4 | 1168 | bond_3ad_handle_link_change(new_active, BOND_LINK_UP); |
1da177e4 | 1169 | |
58402054 | 1170 | if (bond_is_lb(bond)) |
1da177e4 | 1171 | bond_alb_handle_link_change(bond, new_active, BOND_LINK_UP); |
1da177e4 LT |
1172 | } else { |
1173 | if (USES_PRIMARY(bond->params.mode)) { | |
a4aee5c8 JP |
1174 | pr_info("%s: making interface %s the new active one.\n", |
1175 | bond->dev->name, new_active->dev->name); | |
1da177e4 LT |
1176 | } |
1177 | } | |
1178 | } | |
1179 | ||
3d632c3f | 1180 | if (USES_PRIMARY(bond->params.mode)) |
1da177e4 | 1181 | bond_mc_swap(bond, new_active, old_active); |
1da177e4 | 1182 | |
58402054 | 1183 | if (bond_is_lb(bond)) { |
1da177e4 | 1184 | bond_alb_handle_active_change(bond, new_active); |
8f903c70 JV |
1185 | if (old_active) |
1186 | bond_set_slave_inactive_flags(old_active); | |
1187 | if (new_active) | |
1188 | bond_set_slave_active_flags(new_active); | |
1da177e4 LT |
1189 | } else { |
1190 | bond->curr_active_slave = new_active; | |
1191 | } | |
c3ade5ca JV |
1192 | |
1193 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) { | |
3d632c3f | 1194 | if (old_active) |
c3ade5ca | 1195 | bond_set_slave_inactive_flags(old_active); |
c3ade5ca JV |
1196 | |
1197 | if (new_active) { | |
1198 | bond_set_slave_active_flags(new_active); | |
2ab82852 | 1199 | |
709f8a45 OG |
1200 | if (bond->params.fail_over_mac) |
1201 | bond_do_fail_over_mac(bond, new_active, | |
1202 | old_active); | |
3915c1e8 | 1203 | |
709f8a45 | 1204 | bond->send_grat_arp = bond->params.num_grat_arp; |
b59f9f74 | 1205 | bond_send_gratuitous_arp(bond); |
01f3109d | 1206 | |
305d552a BH |
1207 | bond->send_unsol_na = bond->params.num_unsol_na; |
1208 | bond_send_unsolicited_na(bond); | |
1209 | ||
01f3109d OG |
1210 | write_unlock_bh(&bond->curr_slave_lock); |
1211 | read_unlock(&bond->lock); | |
1212 | ||
75c78500 | 1213 | netdev_bonding_change(bond->dev, NETDEV_BONDING_FAILOVER); |
01f3109d OG |
1214 | |
1215 | read_lock(&bond->lock); | |
1216 | write_lock_bh(&bond->curr_slave_lock); | |
7893b249 | 1217 | } |
c3ade5ca | 1218 | } |
a2fd940f | 1219 | |
5a37e8ca FL |
1220 | /* resend IGMP joins since active slave has changed or |
1221 | * all were sent on curr_active_slave */ | |
1222 | if ((USES_PRIMARY(bond->params.mode) && new_active) || | |
1223 | bond->params.mode == BOND_MODE_ROUNDROBIN) { | |
c2952c31 | 1224 | bond->igmp_retrans = bond->params.resend_igmp; |
5a37e8ca | 1225 | queue_delayed_work(bond->wq, &bond->mcast_work, 0); |
a2fd940f | 1226 | } |
1da177e4 LT |
1227 | } |
1228 | ||
1229 | /** | |
1230 | * bond_select_active_slave - select a new active slave, if needed | |
1231 | * @bond: our bonding struct | |
1232 | * | |
3d632c3f | 1233 | * This functions should be called when one of the following occurs: |
1da177e4 LT |
1234 | * - The old curr_active_slave has been released or lost its link. |
1235 | * - The primary_slave has got its link back. | |
1236 | * - A slave has got its link back and there's no old curr_active_slave. | |
1237 | * | |
3915c1e8 | 1238 | * Caller must hold bond->lock for read and curr_slave_lock for write_bh. |
1da177e4 | 1239 | */ |
a77b5325 | 1240 | void bond_select_active_slave(struct bonding *bond) |
1da177e4 LT |
1241 | { |
1242 | struct slave *best_slave; | |
ff59c456 | 1243 | int rv; |
1da177e4 LT |
1244 | |
1245 | best_slave = bond_find_best_slave(bond); | |
1246 | if (best_slave != bond->curr_active_slave) { | |
1247 | bond_change_active_slave(bond, best_slave); | |
ff59c456 JV |
1248 | rv = bond_set_carrier(bond); |
1249 | if (!rv) | |
1250 | return; | |
1251 | ||
1252 | if (netif_carrier_ok(bond->dev)) { | |
a4aee5c8 JP |
1253 | pr_info("%s: first active interface up!\n", |
1254 | bond->dev->name); | |
ff59c456 | 1255 | } else { |
a4aee5c8 JP |
1256 | pr_info("%s: now running without any active interface !\n", |
1257 | bond->dev->name); | |
ff59c456 | 1258 | } |
1da177e4 LT |
1259 | } |
1260 | } | |
1261 | ||
1262 | /*--------------------------- slave list handling ---------------------------*/ | |
1263 | ||
1264 | /* | |
1265 | * This function attaches the slave to the end of list. | |
1266 | * | |
1267 | * bond->lock held for writing by caller. | |
1268 | */ | |
1269 | static void bond_attach_slave(struct bonding *bond, struct slave *new_slave) | |
1270 | { | |
1271 | if (bond->first_slave == NULL) { /* attaching the first slave */ | |
1272 | new_slave->next = new_slave; | |
1273 | new_slave->prev = new_slave; | |
1274 | bond->first_slave = new_slave; | |
1275 | } else { | |
1276 | new_slave->next = bond->first_slave; | |
1277 | new_slave->prev = bond->first_slave->prev; | |
1278 | new_slave->next->prev = new_slave; | |
1279 | new_slave->prev->next = new_slave; | |
1280 | } | |
1281 | ||
1282 | bond->slave_cnt++; | |
1283 | } | |
1284 | ||
1285 | /* | |
1286 | * This function detaches the slave from the list. | |
1287 | * WARNING: no check is made to verify if the slave effectively | |
1288 | * belongs to <bond>. | |
1289 | * Nothing is freed on return, structures are just unchained. | |
1290 | * If any slave pointer in bond was pointing to <slave>, | |
1291 | * it should be changed by the calling function. | |
1292 | * | |
1293 | * bond->lock held for writing by caller. | |
1294 | */ | |
1295 | static void bond_detach_slave(struct bonding *bond, struct slave *slave) | |
1296 | { | |
3d632c3f | 1297 | if (slave->next) |
1da177e4 | 1298 | slave->next->prev = slave->prev; |
1da177e4 | 1299 | |
3d632c3f | 1300 | if (slave->prev) |
1da177e4 | 1301 | slave->prev->next = slave->next; |
1da177e4 LT |
1302 | |
1303 | if (bond->first_slave == slave) { /* slave is the first slave */ | |
1304 | if (bond->slave_cnt > 1) { /* there are more slave */ | |
1305 | bond->first_slave = slave->next; | |
1306 | } else { | |
1307 | bond->first_slave = NULL; /* slave was the last one */ | |
1308 | } | |
1309 | } | |
1310 | ||
1311 | slave->next = NULL; | |
1312 | slave->prev = NULL; | |
1313 | bond->slave_cnt--; | |
1314 | } | |
1315 | ||
f6dc31a8 WC |
1316 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1317 | /* | |
1318 | * You must hold read lock on bond->lock before calling this. | |
1319 | */ | |
1320 | static bool slaves_support_netpoll(struct net_device *bond_dev) | |
1321 | { | |
1322 | struct bonding *bond = netdev_priv(bond_dev); | |
1323 | struct slave *slave; | |
1324 | int i = 0; | |
1325 | bool ret = true; | |
1326 | ||
1327 | bond_for_each_slave(bond, slave, i) { | |
1328 | if ((slave->dev->priv_flags & IFF_DISABLE_NETPOLL) || | |
1329 | !slave->dev->netdev_ops->ndo_poll_controller) | |
1330 | ret = false; | |
1331 | } | |
1332 | return i != 0 && ret; | |
1333 | } | |
1334 | ||
1335 | static void bond_poll_controller(struct net_device *bond_dev) | |
1336 | { | |
c2355e1a NH |
1337 | struct bonding *bond = netdev_priv(bond_dev); |
1338 | struct slave *slave; | |
1339 | int i; | |
1340 | ||
1341 | bond_for_each_slave(bond, slave, i) { | |
1342 | if (slave->dev && IS_UP(slave->dev)) | |
1343 | netpoll_poll_dev(slave->dev); | |
1344 | } | |
f6dc31a8 WC |
1345 | } |
1346 | ||
1347 | static void bond_netpoll_cleanup(struct net_device *bond_dev) | |
1348 | { | |
1349 | struct bonding *bond = netdev_priv(bond_dev); | |
1350 | struct slave *slave; | |
1351 | const struct net_device_ops *ops; | |
1352 | int i; | |
1353 | ||
1354 | read_lock(&bond->lock); | |
1355 | bond_dev->npinfo = NULL; | |
1356 | bond_for_each_slave(bond, slave, i) { | |
1357 | if (slave->dev) { | |
1358 | ops = slave->dev->netdev_ops; | |
1359 | if (ops->ndo_netpoll_cleanup) | |
1360 | ops->ndo_netpoll_cleanup(slave->dev); | |
1361 | else | |
1362 | slave->dev->npinfo = NULL; | |
1363 | } | |
1364 | } | |
1365 | read_unlock(&bond->lock); | |
1366 | } | |
1367 | ||
1368 | #else | |
1369 | ||
1370 | static void bond_netpoll_cleanup(struct net_device *bond_dev) | |
1371 | { | |
1372 | } | |
1373 | ||
1374 | #endif | |
1375 | ||
1da177e4 LT |
1376 | /*---------------------------------- IOCTL ----------------------------------*/ |
1377 | ||
4ad072c9 AB |
1378 | static int bond_sethwaddr(struct net_device *bond_dev, |
1379 | struct net_device *slave_dev) | |
1da177e4 | 1380 | { |
5a03cdb7 HE |
1381 | pr_debug("bond_dev=%p\n", bond_dev); |
1382 | pr_debug("slave_dev=%p\n", slave_dev); | |
1383 | pr_debug("slave_dev->addr_len=%d\n", slave_dev->addr_len); | |
1da177e4 LT |
1384 | memcpy(bond_dev->dev_addr, slave_dev->dev_addr, slave_dev->addr_len); |
1385 | return 0; | |
1386 | } | |
1387 | ||
7f353bf2 HX |
1388 | #define BOND_VLAN_FEATURES \ |
1389 | (NETIF_F_VLAN_CHALLENGED | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX | \ | |
1390 | NETIF_F_HW_VLAN_FILTER) | |
8531c5ff | 1391 | |
3d632c3f | 1392 | /* |
8e3babcd | 1393 | * Compute the common dev->feature set available to all slaves. Some |
7f353bf2 HX |
1394 | * feature bits are managed elsewhere, so preserve those feature bits |
1395 | * on the master device. | |
8531c5ff AK |
1396 | */ |
1397 | static int bond_compute_features(struct bonding *bond) | |
1398 | { | |
8531c5ff AK |
1399 | struct slave *slave; |
1400 | struct net_device *bond_dev = bond->dev; | |
7f353bf2 | 1401 | unsigned long features = bond_dev->features; |
278339a4 | 1402 | unsigned long vlan_features = 0; |
3158bf7d MS |
1403 | unsigned short max_hard_header_len = max((u16)ETH_HLEN, |
1404 | bond_dev->hard_header_len); | |
8e3babcd | 1405 | int i; |
8531c5ff | 1406 | |
7f353bf2 | 1407 | features &= ~(NETIF_F_ALL_CSUM | BOND_VLAN_FEATURES); |
b63365a2 HX |
1408 | features |= NETIF_F_GSO_MASK | NETIF_F_NO_CSUM; |
1409 | ||
1410 | if (!bond->first_slave) | |
1411 | goto done; | |
1412 | ||
1413 | features &= ~NETIF_F_ONE_FOR_ALL; | |
7f353bf2 | 1414 | |
278339a4 | 1415 | vlan_features = bond->first_slave->dev->vlan_features; |
54ef3137 | 1416 | bond_for_each_slave(bond, slave, i) { |
b63365a2 HX |
1417 | features = netdev_increment_features(features, |
1418 | slave->dev->features, | |
1419 | NETIF_F_ONE_FOR_ALL); | |
278339a4 JV |
1420 | vlan_features = netdev_increment_features(vlan_features, |
1421 | slave->dev->vlan_features, | |
1422 | NETIF_F_ONE_FOR_ALL); | |
54ef3137 JV |
1423 | if (slave->dev->hard_header_len > max_hard_header_len) |
1424 | max_hard_header_len = slave->dev->hard_header_len; | |
1425 | } | |
8531c5ff | 1426 | |
b63365a2 | 1427 | done: |
7f353bf2 | 1428 | features |= (bond_dev->features & BOND_VLAN_FEATURES); |
b63365a2 | 1429 | bond_dev->features = netdev_fix_features(features, NULL); |
278339a4 | 1430 | bond_dev->vlan_features = netdev_fix_features(vlan_features, NULL); |
54ef3137 | 1431 | bond_dev->hard_header_len = max_hard_header_len; |
8531c5ff AK |
1432 | |
1433 | return 0; | |
1434 | } | |
1435 | ||
872254dd MS |
1436 | static void bond_setup_by_slave(struct net_device *bond_dev, |
1437 | struct net_device *slave_dev) | |
1438 | { | |
454d7c9b | 1439 | struct bonding *bond = netdev_priv(bond_dev); |
d90a162a | 1440 | |
00829823 | 1441 | bond_dev->header_ops = slave_dev->header_ops; |
872254dd MS |
1442 | |
1443 | bond_dev->type = slave_dev->type; | |
1444 | bond_dev->hard_header_len = slave_dev->hard_header_len; | |
1445 | bond_dev->addr_len = slave_dev->addr_len; | |
1446 | ||
1447 | memcpy(bond_dev->broadcast, slave_dev->broadcast, | |
1448 | slave_dev->addr_len); | |
d90a162a | 1449 | bond->setup_by_slave = 1; |
872254dd MS |
1450 | } |
1451 | ||
1da177e4 | 1452 | /* enslave device <slave> to bond device <master> */ |
a77b5325 | 1453 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) |
1da177e4 | 1454 | { |
454d7c9b | 1455 | struct bonding *bond = netdev_priv(bond_dev); |
eb7cc59a | 1456 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 | 1457 | struct slave *new_slave = NULL; |
22bedad3 | 1458 | struct netdev_hw_addr *ha; |
1da177e4 LT |
1459 | struct sockaddr addr; |
1460 | int link_reporting; | |
1461 | int old_features = bond_dev->features; | |
1462 | int res = 0; | |
1463 | ||
552709d5 | 1464 | if (!bond->params.use_carrier && slave_dev->ethtool_ops == NULL && |
eb7cc59a | 1465 | slave_ops->ndo_do_ioctl == NULL) { |
a4aee5c8 JP |
1466 | pr_warning("%s: Warning: no link monitoring support for %s\n", |
1467 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1468 | } |
1469 | ||
1470 | /* bond must be initialized by bond_open() before enslaving */ | |
1471 | if (!(bond_dev->flags & IFF_UP)) { | |
a4aee5c8 JP |
1472 | pr_warning("%s: master_dev is not up in bond_enslave\n", |
1473 | bond_dev->name); | |
1da177e4 LT |
1474 | } |
1475 | ||
1476 | /* already enslaved */ | |
1477 | if (slave_dev->flags & IFF_SLAVE) { | |
5a03cdb7 | 1478 | pr_debug("Error, Device was already enslaved\n"); |
1da177e4 LT |
1479 | return -EBUSY; |
1480 | } | |
1481 | ||
1482 | /* vlan challenged mutual exclusion */ | |
1483 | /* no need to lock since we're protected by rtnl_lock */ | |
1484 | if (slave_dev->features & NETIF_F_VLAN_CHALLENGED) { | |
5a03cdb7 | 1485 | pr_debug("%s: NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
f35188fa | 1486 | if (bond->vlgrp) { |
a4aee5c8 JP |
1487 | pr_err("%s: Error: cannot enslave VLAN challenged slave %s on VLAN enabled bond %s\n", |
1488 | bond_dev->name, slave_dev->name, bond_dev->name); | |
1da177e4 LT |
1489 | return -EPERM; |
1490 | } else { | |
a4aee5c8 JP |
1491 | pr_warning("%s: Warning: enslaved VLAN challenged slave %s. Adding VLANs will be blocked as long as %s is part of bond %s\n", |
1492 | bond_dev->name, slave_dev->name, | |
1493 | slave_dev->name, bond_dev->name); | |
1da177e4 LT |
1494 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
1495 | } | |
1496 | } else { | |
5a03cdb7 | 1497 | pr_debug("%s: ! NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
1da177e4 LT |
1498 | if (bond->slave_cnt == 0) { |
1499 | /* First slave, and it is not VLAN challenged, | |
1500 | * so remove the block of adding VLANs over the bond. | |
1501 | */ | |
1502 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; | |
1503 | } | |
1504 | } | |
1505 | ||
217df670 JV |
1506 | /* |
1507 | * Old ifenslave binaries are no longer supported. These can | |
3d632c3f | 1508 | * be identified with moderate accuracy by the state of the slave: |
217df670 JV |
1509 | * the current ifenslave will set the interface down prior to |
1510 | * enslaving it; the old ifenslave will not. | |
1511 | */ | |
1512 | if ((slave_dev->flags & IFF_UP)) { | |
a4aee5c8 | 1513 | pr_err("%s is up. This may be due to an out of date ifenslave.\n", |
217df670 JV |
1514 | slave_dev->name); |
1515 | res = -EPERM; | |
1516 | goto err_undo_flags; | |
1517 | } | |
1da177e4 | 1518 | |
872254dd MS |
1519 | /* set bonding device ether type by slave - bonding netdevices are |
1520 | * created with ether_setup, so when the slave type is not ARPHRD_ETHER | |
1521 | * there is a need to override some of the type dependent attribs/funcs. | |
1522 | * | |
1523 | * bond ether type mutual exclusion - don't allow slaves of dissimilar | |
1524 | * ether type (eg ARPHRD_ETHER and ARPHRD_INFINIBAND) share the same bond | |
1525 | */ | |
1526 | if (bond->slave_cnt == 0) { | |
e36b9d16 | 1527 | if (bond_dev->type != slave_dev->type) { |
e36b9d16 | 1528 | pr_debug("%s: change device type from %d to %d\n", |
a4aee5c8 JP |
1529 | bond_dev->name, |
1530 | bond_dev->type, slave_dev->type); | |
75c78500 | 1531 | |
3ca5b404 JP |
1532 | res = netdev_bonding_change(bond_dev, |
1533 | NETDEV_PRE_TYPE_CHANGE); | |
1534 | res = notifier_to_errno(res); | |
1535 | if (res) { | |
1536 | pr_err("%s: refused to change device type\n", | |
1537 | bond_dev->name); | |
1538 | res = -EBUSY; | |
1539 | goto err_undo_flags; | |
1540 | } | |
75c78500 | 1541 | |
32a806c1 | 1542 | /* Flush unicast and multicast addresses */ |
a748ee24 | 1543 | dev_uc_flush(bond_dev); |
22bedad3 | 1544 | dev_mc_flush(bond_dev); |
32a806c1 | 1545 | |
e36b9d16 MS |
1546 | if (slave_dev->type != ARPHRD_ETHER) |
1547 | bond_setup_by_slave(bond_dev, slave_dev); | |
1548 | else | |
1549 | ether_setup(bond_dev); | |
75c78500 | 1550 | |
93d9b7d7 JP |
1551 | netdev_bonding_change(bond_dev, |
1552 | NETDEV_POST_TYPE_CHANGE); | |
e36b9d16 | 1553 | } |
872254dd | 1554 | } else if (bond_dev->type != slave_dev->type) { |
a4aee5c8 JP |
1555 | pr_err("%s ether type (%d) is different from other slaves (%d), can not enslave it.\n", |
1556 | slave_dev->name, | |
1557 | slave_dev->type, bond_dev->type); | |
1558 | res = -EINVAL; | |
1559 | goto err_undo_flags; | |
872254dd MS |
1560 | } |
1561 | ||
eb7cc59a | 1562 | if (slave_ops->ndo_set_mac_address == NULL) { |
2ab82852 | 1563 | if (bond->slave_cnt == 0) { |
a4aee5c8 JP |
1564 | pr_warning("%s: Warning: The first slave device specified does not support setting the MAC address. Setting fail_over_mac to active.", |
1565 | bond_dev->name); | |
3915c1e8 JV |
1566 | bond->params.fail_over_mac = BOND_FOM_ACTIVE; |
1567 | } else if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { | |
a4aee5c8 JP |
1568 | 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", |
1569 | bond_dev->name); | |
2ab82852 MS |
1570 | res = -EOPNOTSUPP; |
1571 | goto err_undo_flags; | |
1572 | } | |
1da177e4 LT |
1573 | } |
1574 | ||
c20811a7 JP |
1575 | /* If this is the first slave, then we need to set the master's hardware |
1576 | * address to be the same as the slave's. */ | |
1577 | if (bond->slave_cnt == 0) | |
1578 | memcpy(bond->dev->dev_addr, slave_dev->dev_addr, | |
1579 | slave_dev->addr_len); | |
1580 | ||
1581 | ||
243cb4e5 | 1582 | new_slave = kzalloc(sizeof(struct slave), GFP_KERNEL); |
1da177e4 LT |
1583 | if (!new_slave) { |
1584 | res = -ENOMEM; | |
1585 | goto err_undo_flags; | |
1586 | } | |
1587 | ||
bb1d9123 AG |
1588 | /* |
1589 | * Set the new_slave's queue_id to be zero. Queue ID mapping | |
1590 | * is set via sysfs or module option if desired. | |
1591 | */ | |
1592 | new_slave->queue_id = 0; | |
1593 | ||
b15ba0fb JP |
1594 | /* Save slave's original mtu and then set it to match the bond */ |
1595 | new_slave->original_mtu = slave_dev->mtu; | |
1596 | res = dev_set_mtu(slave_dev, bond->dev->mtu); | |
1597 | if (res) { | |
1598 | pr_debug("Error %d calling dev_set_mtu\n", res); | |
1599 | goto err_free; | |
1600 | } | |
1601 | ||
217df670 JV |
1602 | /* |
1603 | * Save slave's original ("permanent") mac address for modes | |
1604 | * that need it, and for restoring it upon release, and then | |
1605 | * set it to the master's address | |
1606 | */ | |
1607 | memcpy(new_slave->perm_hwaddr, slave_dev->dev_addr, ETH_ALEN); | |
1da177e4 | 1608 | |
dd957c57 | 1609 | if (!bond->params.fail_over_mac) { |
2ab82852 MS |
1610 | /* |
1611 | * Set slave to master's mac address. The application already | |
1612 | * set the master's mac address to that of the first slave | |
1613 | */ | |
1614 | memcpy(addr.sa_data, bond_dev->dev_addr, bond_dev->addr_len); | |
1615 | addr.sa_family = slave_dev->type; | |
1616 | res = dev_set_mac_address(slave_dev, &addr); | |
1617 | if (res) { | |
5a03cdb7 | 1618 | pr_debug("Error %d calling set_mac_address\n", res); |
b15ba0fb | 1619 | goto err_restore_mtu; |
2ab82852 | 1620 | } |
217df670 | 1621 | } |
1da177e4 | 1622 | |
c2edacf8 JV |
1623 | res = netdev_set_master(slave_dev, bond_dev); |
1624 | if (res) { | |
5a03cdb7 | 1625 | pr_debug("Error %d calling netdev_set_master\n", res); |
569f0c4d | 1626 | goto err_restore_mac; |
c2edacf8 | 1627 | } |
217df670 JV |
1628 | /* open the slave since the application closed it */ |
1629 | res = dev_open(slave_dev); | |
1630 | if (res) { | |
3d632c3f | 1631 | pr_debug("Opening slave %s failed\n", slave_dev->name); |
569f0c4d | 1632 | goto err_unset_master; |
1da177e4 LT |
1633 | } |
1634 | ||
1da177e4 | 1635 | new_slave->dev = slave_dev; |
0b680e75 | 1636 | slave_dev->priv_flags |= IFF_BONDING; |
1da177e4 | 1637 | |
58402054 | 1638 | if (bond_is_lb(bond)) { |
1da177e4 LT |
1639 | /* bond_alb_init_slave() must be called before all other stages since |
1640 | * it might fail and we do not want to have to undo everything | |
1641 | */ | |
1642 | res = bond_alb_init_slave(bond, new_slave); | |
3d632c3f | 1643 | if (res) |
569f0c4d | 1644 | goto err_close; |
1da177e4 LT |
1645 | } |
1646 | ||
1647 | /* If the mode USES_PRIMARY, then the new slave gets the | |
1648 | * master's promisc (and mc) settings only if it becomes the | |
1649 | * curr_active_slave, and that is taken care of later when calling | |
1650 | * bond_change_active() | |
1651 | */ | |
1652 | if (!USES_PRIMARY(bond->params.mode)) { | |
1653 | /* set promiscuity level to new slave */ | |
1654 | if (bond_dev->flags & IFF_PROMISC) { | |
7e1a1ac1 WC |
1655 | res = dev_set_promiscuity(slave_dev, 1); |
1656 | if (res) | |
1657 | goto err_close; | |
1da177e4 LT |
1658 | } |
1659 | ||
1660 | /* set allmulti level to new slave */ | |
1661 | if (bond_dev->flags & IFF_ALLMULTI) { | |
7e1a1ac1 WC |
1662 | res = dev_set_allmulti(slave_dev, 1); |
1663 | if (res) | |
1664 | goto err_close; | |
1da177e4 LT |
1665 | } |
1666 | ||
b9e40857 | 1667 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 1668 | /* upload master's mc_list to new slave */ |
22bedad3 JP |
1669 | netdev_for_each_mc_addr(ha, bond_dev) |
1670 | dev_mc_add(slave_dev, ha->addr); | |
b9e40857 | 1671 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
1672 | } |
1673 | ||
1674 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1675 | /* add lacpdu mc addr to mc list */ | |
1676 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; | |
1677 | ||
22bedad3 | 1678 | dev_mc_add(slave_dev, lacpdu_multicast); |
1da177e4 LT |
1679 | } |
1680 | ||
1681 | bond_add_vlans_on_slave(bond, slave_dev); | |
1682 | ||
1683 | write_lock_bh(&bond->lock); | |
1684 | ||
1685 | bond_attach_slave(bond, new_slave); | |
1686 | ||
1687 | new_slave->delay = 0; | |
1688 | new_slave->link_failure_count = 0; | |
1689 | ||
8531c5ff AK |
1690 | bond_compute_features(bond); |
1691 | ||
3915c1e8 JV |
1692 | write_unlock_bh(&bond->lock); |
1693 | ||
1694 | read_lock(&bond->lock); | |
1695 | ||
f5b2b966 JV |
1696 | new_slave->last_arp_rx = jiffies; |
1697 | ||
1da177e4 LT |
1698 | if (bond->params.miimon && !bond->params.use_carrier) { |
1699 | link_reporting = bond_check_dev_link(bond, slave_dev, 1); | |
1700 | ||
1701 | if ((link_reporting == -1) && !bond->params.arp_interval) { | |
1702 | /* | |
1703 | * miimon is set but a bonded network driver | |
1704 | * does not support ETHTOOL/MII and | |
1705 | * arp_interval is not set. Note: if | |
1706 | * use_carrier is enabled, we will never go | |
1707 | * here (because netif_carrier is always | |
1708 | * supported); thus, we don't need to change | |
1709 | * the messages for netif_carrier. | |
1710 | */ | |
a4aee5c8 | 1711 | 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 | 1712 | bond_dev->name, slave_dev->name); |
1da177e4 LT |
1713 | } else if (link_reporting == -1) { |
1714 | /* unable get link status using mii/ethtool */ | |
a4aee5c8 JP |
1715 | 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", |
1716 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1717 | } |
1718 | } | |
1719 | ||
1720 | /* check for initial state */ | |
1721 | if (!bond->params.miimon || | |
1722 | (bond_check_dev_link(bond, slave_dev, 0) == BMSR_LSTATUS)) { | |
1723 | if (bond->params.updelay) { | |
a4aee5c8 | 1724 | pr_debug("Initial state of slave_dev is BOND_LINK_BACK\n"); |
1da177e4 LT |
1725 | new_slave->link = BOND_LINK_BACK; |
1726 | new_slave->delay = bond->params.updelay; | |
1727 | } else { | |
a4aee5c8 | 1728 | pr_debug("Initial state of slave_dev is BOND_LINK_UP\n"); |
1da177e4 LT |
1729 | new_slave->link = BOND_LINK_UP; |
1730 | } | |
1731 | new_slave->jiffies = jiffies; | |
1732 | } else { | |
a4aee5c8 | 1733 | pr_debug("Initial state of slave_dev is BOND_LINK_DOWN\n"); |
1da177e4 LT |
1734 | new_slave->link = BOND_LINK_DOWN; |
1735 | } | |
1736 | ||
1737 | if (bond_update_speed_duplex(new_slave) && | |
1738 | (new_slave->link != BOND_LINK_DOWN)) { | |
a4aee5c8 JP |
1739 | pr_warning("%s: Warning: failed to get speed and duplex from %s, assumed to be 100Mb/sec and Full.\n", |
1740 | bond_dev->name, new_slave->dev->name); | |
1da177e4 LT |
1741 | |
1742 | if (bond->params.mode == BOND_MODE_8023AD) { | |
a4aee5c8 JP |
1743 | pr_warning("%s: Warning: Operation of 802.3ad mode requires ETHTOOL support in base driver for proper aggregator selection.\n", |
1744 | bond_dev->name); | |
1da177e4 LT |
1745 | } |
1746 | } | |
1747 | ||
1748 | if (USES_PRIMARY(bond->params.mode) && bond->params.primary[0]) { | |
1749 | /* if there is a primary slave, remember it */ | |
a549952a | 1750 | if (strcmp(bond->params.primary, new_slave->dev->name) == 0) { |
1da177e4 | 1751 | bond->primary_slave = new_slave; |
a549952a JP |
1752 | bond->force_primary = true; |
1753 | } | |
1da177e4 LT |
1754 | } |
1755 | ||
3915c1e8 JV |
1756 | write_lock_bh(&bond->curr_slave_lock); |
1757 | ||
1da177e4 LT |
1758 | switch (bond->params.mode) { |
1759 | case BOND_MODE_ACTIVEBACKUP: | |
8a8e447b JV |
1760 | bond_set_slave_inactive_flags(new_slave); |
1761 | bond_select_active_slave(bond); | |
1da177e4 LT |
1762 | break; |
1763 | case BOND_MODE_8023AD: | |
1764 | /* in 802.3ad mode, the internal mechanism | |
1765 | * will activate the slaves in the selected | |
1766 | * aggregator | |
1767 | */ | |
1768 | bond_set_slave_inactive_flags(new_slave); | |
1769 | /* if this is the first slave */ | |
1770 | if (bond->slave_cnt == 1) { | |
1771 | SLAVE_AD_INFO(new_slave).id = 1; | |
1772 | /* Initialize AD with the number of times that the AD timer is called in 1 second | |
1773 | * can be called only after the mac address of the bond is set | |
1774 | */ | |
1775 | bond_3ad_initialize(bond, 1000/AD_TIMER_INTERVAL, | |
1776 | bond->params.lacp_fast); | |
1777 | } else { | |
1778 | SLAVE_AD_INFO(new_slave).id = | |
1779 | SLAVE_AD_INFO(new_slave->prev).id + 1; | |
1780 | } | |
1781 | ||
1782 | bond_3ad_bind_slave(new_slave); | |
1783 | break; | |
1784 | case BOND_MODE_TLB: | |
1785 | case BOND_MODE_ALB: | |
1786 | new_slave->state = BOND_STATE_ACTIVE; | |
059fe7a5 | 1787 | bond_set_slave_inactive_flags(new_slave); |
5a29f789 | 1788 | bond_select_active_slave(bond); |
1da177e4 LT |
1789 | break; |
1790 | default: | |
5a03cdb7 | 1791 | pr_debug("This slave is always active in trunk mode\n"); |
1da177e4 LT |
1792 | |
1793 | /* always active in trunk mode */ | |
1794 | new_slave->state = BOND_STATE_ACTIVE; | |
1795 | ||
1796 | /* In trunking mode there is little meaning to curr_active_slave | |
1797 | * anyway (it holds no special properties of the bond device), | |
1798 | * so we can change it without calling change_active_interface() | |
1799 | */ | |
3d632c3f | 1800 | if (!bond->curr_active_slave) |
1da177e4 | 1801 | bond->curr_active_slave = new_slave; |
3d632c3f | 1802 | |
1da177e4 LT |
1803 | break; |
1804 | } /* switch(bond_mode) */ | |
1805 | ||
3915c1e8 JV |
1806 | write_unlock_bh(&bond->curr_slave_lock); |
1807 | ||
ff59c456 JV |
1808 | bond_set_carrier(bond); |
1809 | ||
f6dc31a8 | 1810 | #ifdef CONFIG_NET_POLL_CONTROLLER |
45b0cb8a NH |
1811 | if (slaves_support_netpoll(bond_dev)) { |
1812 | bond_dev->priv_flags &= ~IFF_DISABLE_NETPOLL; | |
1813 | if (bond_dev->npinfo) | |
1814 | slave_dev->npinfo = bond_dev->npinfo; | |
1815 | } else if (!(bond_dev->priv_flags & IFF_DISABLE_NETPOLL)) { | |
f6dc31a8 | 1816 | bond_dev->priv_flags |= IFF_DISABLE_NETPOLL; |
45b0cb8a NH |
1817 | pr_info("New slave device %s does not support netpoll\n", |
1818 | slave_dev->name); | |
1819 | pr_info("Disabling netpoll support for %s\n", bond_dev->name); | |
f6dc31a8 WC |
1820 | } |
1821 | #endif | |
3915c1e8 | 1822 | read_unlock(&bond->lock); |
1da177e4 | 1823 | |
b76cdba9 MW |
1824 | res = bond_create_slave_symlinks(bond_dev, slave_dev); |
1825 | if (res) | |
569f0c4d | 1826 | goto err_close; |
b76cdba9 | 1827 | |
a4aee5c8 JP |
1828 | pr_info("%s: enslaving %s as a%s interface with a%s link.\n", |
1829 | bond_dev->name, slave_dev->name, | |
1830 | new_slave->state == BOND_STATE_ACTIVE ? "n active" : " backup", | |
1831 | new_slave->link != BOND_LINK_DOWN ? "n up" : " down"); | |
1da177e4 LT |
1832 | |
1833 | /* enslave is successful */ | |
1834 | return 0; | |
1835 | ||
1836 | /* Undo stages on error */ | |
1da177e4 LT |
1837 | err_close: |
1838 | dev_close(slave_dev); | |
1839 | ||
569f0c4d JV |
1840 | err_unset_master: |
1841 | netdev_set_master(slave_dev, NULL); | |
1842 | ||
1da177e4 | 1843 | err_restore_mac: |
dd957c57 | 1844 | if (!bond->params.fail_over_mac) { |
3915c1e8 JV |
1845 | /* XXX TODO - fom follow mode needs to change master's |
1846 | * MAC if this slave's MAC is in use by the bond, or at | |
1847 | * least print a warning. | |
1848 | */ | |
2ab82852 MS |
1849 | memcpy(addr.sa_data, new_slave->perm_hwaddr, ETH_ALEN); |
1850 | addr.sa_family = slave_dev->type; | |
1851 | dev_set_mac_address(slave_dev, &addr); | |
1852 | } | |
1da177e4 | 1853 | |
b15ba0fb JP |
1854 | err_restore_mtu: |
1855 | dev_set_mtu(slave_dev, new_slave->original_mtu); | |
1856 | ||
1da177e4 LT |
1857 | err_free: |
1858 | kfree(new_slave); | |
1859 | ||
1860 | err_undo_flags: | |
1861 | bond_dev->features = old_features; | |
3d632c3f | 1862 | |
1da177e4 LT |
1863 | return res; |
1864 | } | |
1865 | ||
1866 | /* | |
1867 | * Try to release the slave device <slave> from the bond device <master> | |
1868 | * It is legal to access curr_active_slave without a lock because all the function | |
1869 | * is write-locked. | |
1870 | * | |
1871 | * The rules for slave state should be: | |
1872 | * for Active/Backup: | |
1873 | * Active stays on all backups go down | |
1874 | * for Bonded connections: | |
1875 | * The first up interface should be left on and all others downed. | |
1876 | */ | |
a77b5325 | 1877 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev) |
1da177e4 | 1878 | { |
454d7c9b | 1879 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
1880 | struct slave *slave, *oldcurrent; |
1881 | struct sockaddr addr; | |
1da177e4 LT |
1882 | |
1883 | /* slave is not a slave or master is not master of this slave */ | |
1884 | if (!(slave_dev->flags & IFF_SLAVE) || | |
1885 | (slave_dev->master != bond_dev)) { | |
a4aee5c8 | 1886 | pr_err("%s: Error: cannot release %s.\n", |
1da177e4 LT |
1887 | bond_dev->name, slave_dev->name); |
1888 | return -EINVAL; | |
1889 | } | |
1890 | ||
e843fa50 | 1891 | block_netpoll_tx(); |
f6dc31a8 | 1892 | netdev_bonding_change(bond_dev, NETDEV_BONDING_DESLAVE); |
1da177e4 LT |
1893 | write_lock_bh(&bond->lock); |
1894 | ||
1895 | slave = bond_get_slave_by_dev(bond, slave_dev); | |
1896 | if (!slave) { | |
1897 | /* not a slave of this bond */ | |
a4aee5c8 JP |
1898 | pr_info("%s: %s not enslaved\n", |
1899 | bond_dev->name, slave_dev->name); | |
f5e2a7b2 | 1900 | write_unlock_bh(&bond->lock); |
e843fa50 | 1901 | unblock_netpoll_tx(); |
1da177e4 LT |
1902 | return -EINVAL; |
1903 | } | |
1904 | ||
3915c1e8 | 1905 | if (!bond->params.fail_over_mac) { |
8e95a202 JP |
1906 | if (!compare_ether_addr(bond_dev->dev_addr, slave->perm_hwaddr) && |
1907 | bond->slave_cnt > 1) | |
a4aee5c8 JP |
1908 | 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", |
1909 | bond_dev->name, slave_dev->name, | |
1910 | slave->perm_hwaddr, | |
1911 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1912 | } |
1913 | ||
1914 | /* Inform AD package of unbinding of slave. */ | |
1915 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1916 | /* must be called before the slave is | |
1917 | * detached from the list | |
1918 | */ | |
1919 | bond_3ad_unbind_slave(slave); | |
1920 | } | |
1921 | ||
a4aee5c8 JP |
1922 | pr_info("%s: releasing %s interface %s\n", |
1923 | bond_dev->name, | |
1924 | (slave->state == BOND_STATE_ACTIVE) ? "active" : "backup", | |
1925 | slave_dev->name); | |
1da177e4 LT |
1926 | |
1927 | oldcurrent = bond->curr_active_slave; | |
1928 | ||
1929 | bond->current_arp_slave = NULL; | |
1930 | ||
1931 | /* release the slave from its bond */ | |
1932 | bond_detach_slave(bond, slave); | |
1933 | ||
8531c5ff AK |
1934 | bond_compute_features(bond); |
1935 | ||
3d632c3f | 1936 | if (bond->primary_slave == slave) |
1da177e4 | 1937 | bond->primary_slave = NULL; |
1da177e4 | 1938 | |
3d632c3f | 1939 | if (oldcurrent == slave) |
1da177e4 | 1940 | bond_change_active_slave(bond, NULL); |
1da177e4 | 1941 | |
58402054 | 1942 | if (bond_is_lb(bond)) { |
1da177e4 LT |
1943 | /* Must be called only after the slave has been |
1944 | * detached from the list and the curr_active_slave | |
1945 | * has been cleared (if our_slave == old_current), | |
1946 | * but before a new active slave is selected. | |
1947 | */ | |
2543331d | 1948 | write_unlock_bh(&bond->lock); |
1da177e4 | 1949 | bond_alb_deinit_slave(bond, slave); |
2543331d | 1950 | write_lock_bh(&bond->lock); |
1da177e4 LT |
1951 | } |
1952 | ||
059fe7a5 JV |
1953 | if (oldcurrent == slave) { |
1954 | /* | |
1955 | * Note that we hold RTNL over this sequence, so there | |
1956 | * is no concern that another slave add/remove event | |
1957 | * will interfere. | |
1958 | */ | |
1959 | write_unlock_bh(&bond->lock); | |
1960 | read_lock(&bond->lock); | |
1961 | write_lock_bh(&bond->curr_slave_lock); | |
1962 | ||
1da177e4 LT |
1963 | bond_select_active_slave(bond); |
1964 | ||
059fe7a5 JV |
1965 | write_unlock_bh(&bond->curr_slave_lock); |
1966 | read_unlock(&bond->lock); | |
1967 | write_lock_bh(&bond->lock); | |
1968 | } | |
1969 | ||
1da177e4 | 1970 | if (bond->slave_cnt == 0) { |
ff59c456 JV |
1971 | bond_set_carrier(bond); |
1972 | ||
1da177e4 LT |
1973 | /* if the last slave was removed, zero the mac address |
1974 | * of the master so it will be set by the application | |
1975 | * to the mac address of the first slave | |
1976 | */ | |
1977 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); | |
1978 | ||
f35188fa | 1979 | if (!bond->vlgrp) { |
1da177e4 LT |
1980 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
1981 | } else { | |
a4aee5c8 JP |
1982 | pr_warning("%s: Warning: clearing HW address of %s while it still has VLANs.\n", |
1983 | bond_dev->name, bond_dev->name); | |
1984 | pr_warning("%s: When re-adding slaves, make sure the bond's HW address matches its VLANs'.\n", | |
1985 | bond_dev->name); | |
1da177e4 LT |
1986 | } |
1987 | } else if ((bond_dev->features & NETIF_F_VLAN_CHALLENGED) && | |
1988 | !bond_has_challenged_slaves(bond)) { | |
a4aee5c8 JP |
1989 | pr_info("%s: last VLAN challenged slave %s left bond %s. VLAN blocking is removed\n", |
1990 | bond_dev->name, slave_dev->name, bond_dev->name); | |
1da177e4 LT |
1991 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; |
1992 | } | |
1993 | ||
1994 | write_unlock_bh(&bond->lock); | |
e843fa50 | 1995 | unblock_netpoll_tx(); |
1da177e4 | 1996 | |
b76cdba9 MW |
1997 | /* must do this from outside any spinlocks */ |
1998 | bond_destroy_slave_symlinks(bond_dev, slave_dev); | |
1999 | ||
1da177e4 LT |
2000 | bond_del_vlans_from_slave(bond, slave_dev); |
2001 | ||
2002 | /* If the mode USES_PRIMARY, then we should only remove its | |
2003 | * promisc and mc settings if it was the curr_active_slave, but that was | |
2004 | * already taken care of above when we detached the slave | |
2005 | */ | |
2006 | if (!USES_PRIMARY(bond->params.mode)) { | |
2007 | /* unset promiscuity level from slave */ | |
3d632c3f | 2008 | if (bond_dev->flags & IFF_PROMISC) |
1da177e4 | 2009 | dev_set_promiscuity(slave_dev, -1); |
1da177e4 LT |
2010 | |
2011 | /* unset allmulti level from slave */ | |
3d632c3f | 2012 | if (bond_dev->flags & IFF_ALLMULTI) |
1da177e4 | 2013 | dev_set_allmulti(slave_dev, -1); |
1da177e4 LT |
2014 | |
2015 | /* flush master's mc_list from slave */ | |
b9e40857 | 2016 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 2017 | bond_mc_list_flush(bond_dev, slave_dev); |
b9e40857 | 2018 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
2019 | } |
2020 | ||
2021 | netdev_set_master(slave_dev, NULL); | |
2022 | ||
f6dc31a8 WC |
2023 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2024 | read_lock_bh(&bond->lock); | |
c22d7ac8 | 2025 | |
45b0cb8a NH |
2026 | if (slaves_support_netpoll(bond_dev)) |
2027 | bond_dev->priv_flags &= ~IFF_DISABLE_NETPOLL; | |
f6dc31a8 WC |
2028 | read_unlock_bh(&bond->lock); |
2029 | if (slave_dev->netdev_ops->ndo_netpoll_cleanup) | |
2030 | slave_dev->netdev_ops->ndo_netpoll_cleanup(slave_dev); | |
2031 | else | |
2032 | slave_dev->npinfo = NULL; | |
2033 | #endif | |
2034 | ||
1da177e4 LT |
2035 | /* close slave before restoring its mac address */ |
2036 | dev_close(slave_dev); | |
2037 | ||
3915c1e8 | 2038 | if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { |
2ab82852 MS |
2039 | /* restore original ("permanent") mac address */ |
2040 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); | |
2041 | addr.sa_family = slave_dev->type; | |
2042 | dev_set_mac_address(slave_dev, &addr); | |
2043 | } | |
1da177e4 | 2044 | |
b15ba0fb JP |
2045 | dev_set_mtu(slave_dev, slave->original_mtu); |
2046 | ||
8f903c70 | 2047 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
f5b2b966 JV |
2048 | IFF_SLAVE_INACTIVE | IFF_BONDING | |
2049 | IFF_SLAVE_NEEDARP); | |
1da177e4 LT |
2050 | |
2051 | kfree(slave); | |
2052 | ||
2053 | return 0; /* deletion OK */ | |
2054 | } | |
2055 | ||
d90a162a | 2056 | /* |
3d632c3f | 2057 | * First release a slave and than destroy the bond if no more slaves are left. |
d90a162a MS |
2058 | * Must be under rtnl_lock when this function is called. |
2059 | */ | |
26d8ee75 | 2060 | static int bond_release_and_destroy(struct net_device *bond_dev, |
2061 | struct net_device *slave_dev) | |
d90a162a | 2062 | { |
454d7c9b | 2063 | struct bonding *bond = netdev_priv(bond_dev); |
d90a162a MS |
2064 | int ret; |
2065 | ||
2066 | ret = bond_release(bond_dev, slave_dev); | |
2067 | if ((ret == 0) && (bond->slave_cnt == 0)) { | |
a4aee5c8 JP |
2068 | pr_info("%s: destroying bond %s.\n", |
2069 | bond_dev->name, bond_dev->name); | |
9e71626c | 2070 | unregister_netdevice(bond_dev); |
d90a162a MS |
2071 | } |
2072 | return ret; | |
2073 | } | |
2074 | ||
1da177e4 LT |
2075 | /* |
2076 | * This function releases all slaves. | |
2077 | */ | |
2078 | static int bond_release_all(struct net_device *bond_dev) | |
2079 | { | |
454d7c9b | 2080 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2081 | struct slave *slave; |
2082 | struct net_device *slave_dev; | |
2083 | struct sockaddr addr; | |
2084 | ||
2085 | write_lock_bh(&bond->lock); | |
2086 | ||
ff59c456 JV |
2087 | netif_carrier_off(bond_dev); |
2088 | ||
3d632c3f | 2089 | if (bond->slave_cnt == 0) |
1da177e4 | 2090 | goto out; |
1da177e4 LT |
2091 | |
2092 | bond->current_arp_slave = NULL; | |
2093 | bond->primary_slave = NULL; | |
2094 | bond_change_active_slave(bond, NULL); | |
2095 | ||
2096 | while ((slave = bond->first_slave) != NULL) { | |
2097 | /* Inform AD package of unbinding of slave | |
2098 | * before slave is detached from the list. | |
2099 | */ | |
3d632c3f | 2100 | if (bond->params.mode == BOND_MODE_8023AD) |
1da177e4 | 2101 | bond_3ad_unbind_slave(slave); |
1da177e4 LT |
2102 | |
2103 | slave_dev = slave->dev; | |
2104 | bond_detach_slave(bond, slave); | |
2105 | ||
2543331d JV |
2106 | /* now that the slave is detached, unlock and perform |
2107 | * all the undo steps that should not be called from | |
2108 | * within a lock. | |
2109 | */ | |
2110 | write_unlock_bh(&bond->lock); | |
2111 | ||
58402054 | 2112 | if (bond_is_lb(bond)) { |
1da177e4 LT |
2113 | /* must be called only after the slave |
2114 | * has been detached from the list | |
2115 | */ | |
2116 | bond_alb_deinit_slave(bond, slave); | |
2117 | } | |
2118 | ||
8531c5ff AK |
2119 | bond_compute_features(bond); |
2120 | ||
b76cdba9 | 2121 | bond_destroy_slave_symlinks(bond_dev, slave_dev); |
1da177e4 LT |
2122 | bond_del_vlans_from_slave(bond, slave_dev); |
2123 | ||
2124 | /* If the mode USES_PRIMARY, then we should only remove its | |
2125 | * promisc and mc settings if it was the curr_active_slave, but that was | |
2126 | * already taken care of above when we detached the slave | |
2127 | */ | |
2128 | if (!USES_PRIMARY(bond->params.mode)) { | |
2129 | /* unset promiscuity level from slave */ | |
3d632c3f | 2130 | if (bond_dev->flags & IFF_PROMISC) |
1da177e4 | 2131 | dev_set_promiscuity(slave_dev, -1); |
1da177e4 LT |
2132 | |
2133 | /* unset allmulti level from slave */ | |
3d632c3f | 2134 | if (bond_dev->flags & IFF_ALLMULTI) |
1da177e4 | 2135 | dev_set_allmulti(slave_dev, -1); |
1da177e4 LT |
2136 | |
2137 | /* flush master's mc_list from slave */ | |
b9e40857 | 2138 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 2139 | bond_mc_list_flush(bond_dev, slave_dev); |
b9e40857 | 2140 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
2141 | } |
2142 | ||
2143 | netdev_set_master(slave_dev, NULL); | |
2144 | ||
2145 | /* close slave before restoring its mac address */ | |
2146 | dev_close(slave_dev); | |
2147 | ||
dd957c57 | 2148 | if (!bond->params.fail_over_mac) { |
2ab82852 MS |
2149 | /* restore original ("permanent") mac address*/ |
2150 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); | |
2151 | addr.sa_family = slave_dev->type; | |
2152 | dev_set_mac_address(slave_dev, &addr); | |
2153 | } | |
1da177e4 | 2154 | |
8f903c70 JV |
2155 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
2156 | IFF_SLAVE_INACTIVE); | |
1da177e4 LT |
2157 | |
2158 | kfree(slave); | |
2159 | ||
2160 | /* re-acquire the lock before getting the next slave */ | |
2161 | write_lock_bh(&bond->lock); | |
2162 | } | |
2163 | ||
2164 | /* zero the mac address of the master so it will be | |
2165 | * set by the application to the mac address of the | |
2166 | * first slave | |
2167 | */ | |
2168 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); | |
2169 | ||
f35188fa | 2170 | if (!bond->vlgrp) { |
1da177e4 | 2171 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
f35188fa | 2172 | } else { |
a4aee5c8 JP |
2173 | pr_warning("%s: Warning: clearing HW address of %s while it still has VLANs.\n", |
2174 | bond_dev->name, bond_dev->name); | |
2175 | pr_warning("%s: When re-adding slaves, make sure the bond's HW address matches its VLANs'.\n", | |
2176 | bond_dev->name); | |
1da177e4 LT |
2177 | } |
2178 | ||
a4aee5c8 | 2179 | pr_info("%s: released all slaves\n", bond_dev->name); |
1da177e4 LT |
2180 | |
2181 | out: | |
2182 | write_unlock_bh(&bond->lock); | |
1da177e4 LT |
2183 | return 0; |
2184 | } | |
2185 | ||
2186 | /* | |
2187 | * This function changes the active slave to slave <slave_dev>. | |
2188 | * It returns -EINVAL in the following cases. | |
2189 | * - <slave_dev> is not found in the list. | |
2190 | * - There is not active slave now. | |
2191 | * - <slave_dev> is already active. | |
2192 | * - The link state of <slave_dev> is not BOND_LINK_UP. | |
2193 | * - <slave_dev> is not running. | |
3d632c3f SH |
2194 | * In these cases, this function does nothing. |
2195 | * In the other cases, current_slave pointer is changed and 0 is returned. | |
1da177e4 LT |
2196 | */ |
2197 | static int bond_ioctl_change_active(struct net_device *bond_dev, struct net_device *slave_dev) | |
2198 | { | |
454d7c9b | 2199 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2200 | struct slave *old_active = NULL; |
2201 | struct slave *new_active = NULL; | |
2202 | int res = 0; | |
2203 | ||
3d632c3f | 2204 | if (!USES_PRIMARY(bond->params.mode)) |
1da177e4 | 2205 | return -EINVAL; |
1da177e4 LT |
2206 | |
2207 | /* Verify that master_dev is indeed the master of slave_dev */ | |
3d632c3f | 2208 | if (!(slave_dev->flags & IFF_SLAVE) || (slave_dev->master != bond_dev)) |
1da177e4 | 2209 | return -EINVAL; |
1da177e4 | 2210 | |
059fe7a5 | 2211 | read_lock(&bond->lock); |
1da177e4 | 2212 | |
059fe7a5 | 2213 | read_lock(&bond->curr_slave_lock); |
1da177e4 | 2214 | old_active = bond->curr_active_slave; |
059fe7a5 JV |
2215 | read_unlock(&bond->curr_slave_lock); |
2216 | ||
1da177e4 LT |
2217 | new_active = bond_get_slave_by_dev(bond, slave_dev); |
2218 | ||
2219 | /* | |
2220 | * Changing to the current active: do nothing; return success. | |
2221 | */ | |
2222 | if (new_active && (new_active == old_active)) { | |
059fe7a5 | 2223 | read_unlock(&bond->lock); |
1da177e4 LT |
2224 | return 0; |
2225 | } | |
2226 | ||
2227 | if ((new_active) && | |
2228 | (old_active) && | |
2229 | (new_active->link == BOND_LINK_UP) && | |
2230 | IS_UP(new_active->dev)) { | |
e843fa50 | 2231 | block_netpoll_tx(); |
059fe7a5 | 2232 | write_lock_bh(&bond->curr_slave_lock); |
1da177e4 | 2233 | bond_change_active_slave(bond, new_active); |
059fe7a5 | 2234 | write_unlock_bh(&bond->curr_slave_lock); |
e843fa50 | 2235 | unblock_netpoll_tx(); |
3d632c3f | 2236 | } else |
1da177e4 | 2237 | res = -EINVAL; |
1da177e4 | 2238 | |
059fe7a5 | 2239 | read_unlock(&bond->lock); |
1da177e4 LT |
2240 | |
2241 | return res; | |
2242 | } | |
2243 | ||
1da177e4 LT |
2244 | static int bond_info_query(struct net_device *bond_dev, struct ifbond *info) |
2245 | { | |
454d7c9b | 2246 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2247 | |
2248 | info->bond_mode = bond->params.mode; | |
2249 | info->miimon = bond->params.miimon; | |
2250 | ||
6603a6f2 | 2251 | read_lock(&bond->lock); |
1da177e4 | 2252 | info->num_slaves = bond->slave_cnt; |
6603a6f2 | 2253 | read_unlock(&bond->lock); |
1da177e4 LT |
2254 | |
2255 | return 0; | |
2256 | } | |
2257 | ||
2258 | static int bond_slave_info_query(struct net_device *bond_dev, struct ifslave *info) | |
2259 | { | |
454d7c9b | 2260 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 2261 | struct slave *slave; |
689c96cc | 2262 | int i, res = -ENODEV; |
1da177e4 | 2263 | |
6603a6f2 | 2264 | read_lock(&bond->lock); |
1da177e4 LT |
2265 | |
2266 | bond_for_each_slave(bond, slave, i) { | |
2267 | if (i == (int)info->slave_id) { | |
689c96cc ED |
2268 | res = 0; |
2269 | strcpy(info->slave_name, slave->dev->name); | |
2270 | info->link = slave->link; | |
2271 | info->state = slave->state; | |
2272 | info->link_failure_count = slave->link_failure_count; | |
1da177e4 LT |
2273 | break; |
2274 | } | |
2275 | } | |
2276 | ||
6603a6f2 | 2277 | read_unlock(&bond->lock); |
1da177e4 | 2278 | |
689c96cc | 2279 | return res; |
1da177e4 LT |
2280 | } |
2281 | ||
2282 | /*-------------------------------- Monitoring -------------------------------*/ | |
2283 | ||
1da177e4 | 2284 | |
f0c76d61 JV |
2285 | static int bond_miimon_inspect(struct bonding *bond) |
2286 | { | |
2287 | struct slave *slave; | |
2288 | int i, link_state, commit = 0; | |
41f89100 JP |
2289 | bool ignore_updelay; |
2290 | ||
2291 | ignore_updelay = !bond->curr_active_slave ? true : false; | |
1da177e4 LT |
2292 | |
2293 | bond_for_each_slave(bond, slave, i) { | |
f0c76d61 | 2294 | slave->new_link = BOND_LINK_NOCHANGE; |
1da177e4 | 2295 | |
f0c76d61 | 2296 | link_state = bond_check_dev_link(bond, slave->dev, 0); |
1da177e4 LT |
2297 | |
2298 | switch (slave->link) { | |
f0c76d61 JV |
2299 | case BOND_LINK_UP: |
2300 | if (link_state) | |
2301 | continue; | |
1da177e4 | 2302 | |
f0c76d61 JV |
2303 | slave->link = BOND_LINK_FAIL; |
2304 | slave->delay = bond->params.downdelay; | |
2305 | if (slave->delay) { | |
a4aee5c8 JP |
2306 | pr_info("%s: link status down for %sinterface %s, disabling it in %d ms.\n", |
2307 | bond->dev->name, | |
2308 | (bond->params.mode == | |
2309 | BOND_MODE_ACTIVEBACKUP) ? | |
2310 | ((slave->state == BOND_STATE_ACTIVE) ? | |
2311 | "active " : "backup ") : "", | |
2312 | slave->dev->name, | |
2313 | bond->params.downdelay * bond->params.miimon); | |
1da177e4 | 2314 | } |
f0c76d61 JV |
2315 | /*FALLTHRU*/ |
2316 | case BOND_LINK_FAIL: | |
2317 | if (link_state) { | |
2318 | /* | |
2319 | * recovered before downdelay expired | |
2320 | */ | |
2321 | slave->link = BOND_LINK_UP; | |
1da177e4 | 2322 | slave->jiffies = jiffies; |
a4aee5c8 JP |
2323 | pr_info("%s: link status up again after %d ms for interface %s.\n", |
2324 | bond->dev->name, | |
2325 | (bond->params.downdelay - slave->delay) * | |
2326 | bond->params.miimon, | |
2327 | slave->dev->name); | |
f0c76d61 | 2328 | continue; |
1da177e4 | 2329 | } |
f0c76d61 JV |
2330 | |
2331 | if (slave->delay <= 0) { | |
2332 | slave->new_link = BOND_LINK_DOWN; | |
2333 | commit++; | |
2334 | continue; | |
1da177e4 | 2335 | } |
1da177e4 | 2336 | |
f0c76d61 JV |
2337 | slave->delay--; |
2338 | break; | |
2339 | ||
2340 | case BOND_LINK_DOWN: | |
2341 | if (!link_state) | |
2342 | continue; | |
2343 | ||
2344 | slave->link = BOND_LINK_BACK; | |
2345 | slave->delay = bond->params.updelay; | |
2346 | ||
2347 | if (slave->delay) { | |
a4aee5c8 JP |
2348 | pr_info("%s: link status up for interface %s, enabling it in %d ms.\n", |
2349 | bond->dev->name, slave->dev->name, | |
2350 | ignore_updelay ? 0 : | |
2351 | bond->params.updelay * | |
2352 | bond->params.miimon); | |
f0c76d61 JV |
2353 | } |
2354 | /*FALLTHRU*/ | |
2355 | case BOND_LINK_BACK: | |
2356 | if (!link_state) { | |
2357 | slave->link = BOND_LINK_DOWN; | |
a4aee5c8 JP |
2358 | pr_info("%s: link status down again after %d ms for interface %s.\n", |
2359 | bond->dev->name, | |
2360 | (bond->params.updelay - slave->delay) * | |
2361 | bond->params.miimon, | |
2362 | slave->dev->name); | |
f0c76d61 JV |
2363 | |
2364 | continue; | |
2365 | } | |
2366 | ||
41f89100 JP |
2367 | if (ignore_updelay) |
2368 | slave->delay = 0; | |
2369 | ||
f0c76d61 JV |
2370 | if (slave->delay <= 0) { |
2371 | slave->new_link = BOND_LINK_UP; | |
2372 | commit++; | |
41f89100 | 2373 | ignore_updelay = false; |
f0c76d61 | 2374 | continue; |
1da177e4 | 2375 | } |
f0c76d61 JV |
2376 | |
2377 | slave->delay--; | |
1da177e4 | 2378 | break; |
f0c76d61 JV |
2379 | } |
2380 | } | |
1da177e4 | 2381 | |
f0c76d61 JV |
2382 | return commit; |
2383 | } | |
1da177e4 | 2384 | |
f0c76d61 JV |
2385 | static void bond_miimon_commit(struct bonding *bond) |
2386 | { | |
2387 | struct slave *slave; | |
2388 | int i; | |
2389 | ||
2390 | bond_for_each_slave(bond, slave, i) { | |
2391 | switch (slave->new_link) { | |
2392 | case BOND_LINK_NOCHANGE: | |
2393 | continue; | |
1da177e4 | 2394 | |
f0c76d61 JV |
2395 | case BOND_LINK_UP: |
2396 | slave->link = BOND_LINK_UP; | |
2397 | slave->jiffies = jiffies; | |
2398 | ||
2399 | if (bond->params.mode == BOND_MODE_8023AD) { | |
2400 | /* prevent it from being the active one */ | |
2401 | slave->state = BOND_STATE_BACKUP; | |
2402 | } else if (bond->params.mode != BOND_MODE_ACTIVEBACKUP) { | |
2403 | /* make it immediately active */ | |
2404 | slave->state = BOND_STATE_ACTIVE; | |
2405 | } else if (slave != bond->primary_slave) { | |
2406 | /* prevent it from being the active one */ | |
2407 | slave->state = BOND_STATE_BACKUP; | |
1da177e4 | 2408 | } |
1da177e4 | 2409 | |
546add79 KPO |
2410 | bond_update_speed_duplex(slave); |
2411 | ||
700c2a77 KPO |
2412 | pr_info("%s: link status definitely up for interface %s, %d Mbps %s duplex.\n", |
2413 | bond->dev->name, slave->dev->name, | |
2414 | slave->speed, slave->duplex ? "full" : "half"); | |
1da177e4 | 2415 | |
f0c76d61 JV |
2416 | /* notify ad that the link status has changed */ |
2417 | if (bond->params.mode == BOND_MODE_8023AD) | |
2418 | bond_3ad_handle_link_change(slave, BOND_LINK_UP); | |
059fe7a5 | 2419 | |
58402054 | 2420 | if (bond_is_lb(bond)) |
f0c76d61 JV |
2421 | bond_alb_handle_link_change(bond, slave, |
2422 | BOND_LINK_UP); | |
1da177e4 | 2423 | |
f0c76d61 JV |
2424 | if (!bond->curr_active_slave || |
2425 | (slave == bond->primary_slave)) | |
2426 | goto do_failover; | |
1da177e4 | 2427 | |
f0c76d61 | 2428 | continue; |
059fe7a5 | 2429 | |
f0c76d61 | 2430 | case BOND_LINK_DOWN: |
fba4acda JV |
2431 | if (slave->link_failure_count < UINT_MAX) |
2432 | slave->link_failure_count++; | |
2433 | ||
f0c76d61 | 2434 | slave->link = BOND_LINK_DOWN; |
1da177e4 | 2435 | |
f0c76d61 JV |
2436 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP || |
2437 | bond->params.mode == BOND_MODE_8023AD) | |
2438 | bond_set_slave_inactive_flags(slave); | |
2439 | ||
a4aee5c8 JP |
2440 | pr_info("%s: link status definitely down for interface %s, disabling it\n", |
2441 | bond->dev->name, slave->dev->name); | |
f0c76d61 JV |
2442 | |
2443 | if (bond->params.mode == BOND_MODE_8023AD) | |
2444 | bond_3ad_handle_link_change(slave, | |
2445 | BOND_LINK_DOWN); | |
2446 | ||
ae63e808 | 2447 | if (bond_is_lb(bond)) |
f0c76d61 JV |
2448 | bond_alb_handle_link_change(bond, slave, |
2449 | BOND_LINK_DOWN); | |
2450 | ||
2451 | if (slave == bond->curr_active_slave) | |
2452 | goto do_failover; | |
2453 | ||
2454 | continue; | |
2455 | ||
2456 | default: | |
a4aee5c8 | 2457 | pr_err("%s: invalid new link %d on slave %s\n", |
f0c76d61 JV |
2458 | bond->dev->name, slave->new_link, |
2459 | slave->dev->name); | |
2460 | slave->new_link = BOND_LINK_NOCHANGE; | |
2461 | ||
2462 | continue; | |
2463 | } | |
2464 | ||
2465 | do_failover: | |
2466 | ASSERT_RTNL(); | |
e843fa50 | 2467 | block_netpoll_tx(); |
f0c76d61 JV |
2468 | write_lock_bh(&bond->curr_slave_lock); |
2469 | bond_select_active_slave(bond); | |
2470 | write_unlock_bh(&bond->curr_slave_lock); | |
e843fa50 | 2471 | unblock_netpoll_tx(); |
f0c76d61 JV |
2472 | } |
2473 | ||
2474 | bond_set_carrier(bond); | |
1da177e4 LT |
2475 | } |
2476 | ||
0b0eef66 JV |
2477 | /* |
2478 | * bond_mii_monitor | |
2479 | * | |
2480 | * Really a wrapper that splits the mii monitor into two phases: an | |
f0c76d61 JV |
2481 | * inspection, then (if inspection indicates something needs to be done) |
2482 | * an acquisition of appropriate locks followed by a commit phase to | |
2483 | * implement whatever link state changes are indicated. | |
0b0eef66 JV |
2484 | */ |
2485 | void bond_mii_monitor(struct work_struct *work) | |
2486 | { | |
2487 | struct bonding *bond = container_of(work, struct bonding, | |
2488 | mii_work.work); | |
0b0eef66 JV |
2489 | |
2490 | read_lock(&bond->lock); | |
f0c76d61 JV |
2491 | if (bond->kill_timers) |
2492 | goto out; | |
2493 | ||
2494 | if (bond->slave_cnt == 0) | |
2495 | goto re_arm; | |
b59f9f74 JV |
2496 | |
2497 | if (bond->send_grat_arp) { | |
2498 | read_lock(&bond->curr_slave_lock); | |
2499 | bond_send_gratuitous_arp(bond); | |
2500 | read_unlock(&bond->curr_slave_lock); | |
2501 | } | |
2502 | ||
305d552a BH |
2503 | if (bond->send_unsol_na) { |
2504 | read_lock(&bond->curr_slave_lock); | |
2505 | bond_send_unsolicited_na(bond); | |
2506 | read_unlock(&bond->curr_slave_lock); | |
2507 | } | |
2508 | ||
f0c76d61 | 2509 | if (bond_miimon_inspect(bond)) { |
0b0eef66 JV |
2510 | read_unlock(&bond->lock); |
2511 | rtnl_lock(); | |
2512 | read_lock(&bond->lock); | |
f0c76d61 JV |
2513 | |
2514 | bond_miimon_commit(bond); | |
2515 | ||
5655662d JV |
2516 | read_unlock(&bond->lock); |
2517 | rtnl_unlock(); /* might sleep, hold no other locks */ | |
2518 | read_lock(&bond->lock); | |
0b0eef66 JV |
2519 | } |
2520 | ||
f0c76d61 JV |
2521 | re_arm: |
2522 | if (bond->params.miimon) | |
2523 | queue_delayed_work(bond->wq, &bond->mii_work, | |
2524 | msecs_to_jiffies(bond->params.miimon)); | |
2525 | out: | |
0b0eef66 | 2526 | read_unlock(&bond->lock); |
0b0eef66 | 2527 | } |
c3ade5ca | 2528 | |
d3bb52b0 | 2529 | static __be32 bond_glean_dev_ip(struct net_device *dev) |
c3ade5ca JV |
2530 | { |
2531 | struct in_device *idev; | |
2532 | struct in_ifaddr *ifa; | |
a144ea4b | 2533 | __be32 addr = 0; |
c3ade5ca JV |
2534 | |
2535 | if (!dev) | |
2536 | return 0; | |
2537 | ||
2538 | rcu_read_lock(); | |
e5ed6399 | 2539 | idev = __in_dev_get_rcu(dev); |
c3ade5ca JV |
2540 | if (!idev) |
2541 | goto out; | |
2542 | ||
2543 | ifa = idev->ifa_list; | |
2544 | if (!ifa) | |
2545 | goto out; | |
2546 | ||
2547 | addr = ifa->ifa_local; | |
2548 | out: | |
2549 | rcu_read_unlock(); | |
2550 | return addr; | |
2551 | } | |
2552 | ||
d3bb52b0 | 2553 | static int bond_has_this_ip(struct bonding *bond, __be32 ip) |
f5b2b966 | 2554 | { |
0883beca | 2555 | struct vlan_entry *vlan; |
f5b2b966 JV |
2556 | |
2557 | if (ip == bond->master_ip) | |
2558 | return 1; | |
2559 | ||
0883beca | 2560 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
f5b2b966 JV |
2561 | if (ip == vlan->vlan_ip) |
2562 | return 1; | |
2563 | } | |
2564 | ||
2565 | return 0; | |
2566 | } | |
2567 | ||
c3ade5ca JV |
2568 | /* |
2569 | * We go to the (large) trouble of VLAN tagging ARP frames because | |
2570 | * switches in VLAN mode (especially if ports are configured as | |
2571 | * "native" to a VLAN) might not pass non-tagged frames. | |
2572 | */ | |
d3bb52b0 | 2573 | 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 |
2574 | { |
2575 | struct sk_buff *skb; | |
2576 | ||
5a03cdb7 | 2577 | pr_debug("arp %d on slave %s: dst %x src %x vid %d\n", arp_op, |
a4aee5c8 | 2578 | slave_dev->name, dest_ip, src_ip, vlan_id); |
3d632c3f | 2579 | |
c3ade5ca JV |
2580 | skb = arp_create(arp_op, ETH_P_ARP, dest_ip, slave_dev, src_ip, |
2581 | NULL, slave_dev->dev_addr, NULL); | |
2582 | ||
2583 | if (!skb) { | |
a4aee5c8 | 2584 | pr_err("ARP packet allocation failed\n"); |
c3ade5ca JV |
2585 | return; |
2586 | } | |
2587 | if (vlan_id) { | |
2588 | skb = vlan_put_tag(skb, vlan_id); | |
2589 | if (!skb) { | |
a4aee5c8 | 2590 | pr_err("failed to insert VLAN tag\n"); |
c3ade5ca JV |
2591 | return; |
2592 | } | |
2593 | } | |
2594 | arp_xmit(skb); | |
2595 | } | |
2596 | ||
2597 | ||
1da177e4 LT |
2598 | static void bond_arp_send_all(struct bonding *bond, struct slave *slave) |
2599 | { | |
c3ade5ca | 2600 | int i, vlan_id, rv; |
d3bb52b0 | 2601 | __be32 *targets = bond->params.arp_targets; |
0883beca | 2602 | struct vlan_entry *vlan; |
c3ade5ca JV |
2603 | struct net_device *vlan_dev; |
2604 | struct flowi fl; | |
2605 | struct rtable *rt; | |
1da177e4 | 2606 | |
6b780567 MW |
2607 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
2608 | if (!targets[i]) | |
5a31bec0 | 2609 | break; |
5a03cdb7 | 2610 | pr_debug("basa: target %x\n", targets[i]); |
f35188fa | 2611 | if (!bond->vlgrp) { |
5a03cdb7 | 2612 | pr_debug("basa: empty vlan: arp_send\n"); |
c3ade5ca JV |
2613 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2614 | bond->master_ip, 0); | |
2615 | continue; | |
2616 | } | |
2617 | ||
2618 | /* | |
2619 | * If VLANs are configured, we do a route lookup to | |
2620 | * determine which VLAN interface would be used, so we | |
2621 | * can tag the ARP with the proper VLAN tag. | |
2622 | */ | |
2623 | memset(&fl, 0, sizeof(fl)); | |
2624 | fl.fl4_dst = targets[i]; | |
2625 | fl.fl4_tos = RTO_ONLINK; | |
2626 | ||
ec87fd3b | 2627 | rv = ip_route_output_key(dev_net(bond->dev), &rt, &fl); |
c3ade5ca JV |
2628 | if (rv) { |
2629 | if (net_ratelimit()) { | |
a4aee5c8 JP |
2630 | pr_warning("%s: no route to arp_ip_target %pI4\n", |
2631 | bond->dev->name, &fl.fl4_dst); | |
c3ade5ca JV |
2632 | } |
2633 | continue; | |
2634 | } | |
2635 | ||
2636 | /* | |
2637 | * This target is not on a VLAN | |
2638 | */ | |
d8d1f30b | 2639 | if (rt->dst.dev == bond->dev) { |
ed4b9f80 | 2640 | ip_rt_put(rt); |
5a03cdb7 | 2641 | pr_debug("basa: rtdev == bond->dev: arp_send\n"); |
c3ade5ca JV |
2642 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2643 | bond->master_ip, 0); | |
2644 | continue; | |
2645 | } | |
2646 | ||
2647 | vlan_id = 0; | |
0883beca | 2648 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
5c15bdec | 2649 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
d8d1f30b | 2650 | if (vlan_dev == rt->dst.dev) { |
c3ade5ca | 2651 | vlan_id = vlan->vlan_id; |
5a03cdb7 | 2652 | pr_debug("basa: vlan match on %s %d\n", |
c3ade5ca JV |
2653 | vlan_dev->name, vlan_id); |
2654 | break; | |
2655 | } | |
2656 | } | |
2657 | ||
2658 | if (vlan_id) { | |
ed4b9f80 | 2659 | ip_rt_put(rt); |
c3ade5ca JV |
2660 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2661 | vlan->vlan_ip, vlan_id); | |
2662 | continue; | |
2663 | } | |
2664 | ||
2665 | if (net_ratelimit()) { | |
a4aee5c8 JP |
2666 | pr_warning("%s: no path to arp_ip_target %pI4 via rt.dev %s\n", |
2667 | bond->dev->name, &fl.fl4_dst, | |
d8d1f30b | 2668 | rt->dst.dev ? rt->dst.dev->name : "NULL"); |
c3ade5ca | 2669 | } |
ed4b9f80 | 2670 | ip_rt_put(rt); |
c3ade5ca JV |
2671 | } |
2672 | } | |
2673 | ||
2674 | /* | |
2675 | * Kick out a gratuitous ARP for an IP on the bonding master plus one | |
2676 | * for each VLAN above us. | |
b59f9f74 JV |
2677 | * |
2678 | * Caller must hold curr_slave_lock for read or better | |
c3ade5ca JV |
2679 | */ |
2680 | static void bond_send_gratuitous_arp(struct bonding *bond) | |
2681 | { | |
2682 | struct slave *slave = bond->curr_active_slave; | |
2683 | struct vlan_entry *vlan; | |
2684 | struct net_device *vlan_dev; | |
2685 | ||
a4aee5c8 JP |
2686 | pr_debug("bond_send_grat_arp: bond %s slave %s\n", |
2687 | bond->dev->name, slave ? slave->dev->name : "NULL"); | |
b59f9f74 JV |
2688 | |
2689 | if (!slave || !bond->send_grat_arp || | |
2690 | test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state)) | |
c3ade5ca JV |
2691 | return; |
2692 | ||
b59f9f74 JV |
2693 | bond->send_grat_arp--; |
2694 | ||
c3ade5ca JV |
2695 | if (bond->master_ip) { |
2696 | bond_arp_send(slave->dev, ARPOP_REPLY, bond->master_ip, | |
1053f62c | 2697 | bond->master_ip, 0); |
c3ade5ca JV |
2698 | } |
2699 | ||
f35188fa JV |
2700 | if (!bond->vlgrp) |
2701 | return; | |
2702 | ||
c3ade5ca | 2703 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
5c15bdec | 2704 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
2705 | if (vlan->vlan_ip) { |
2706 | bond_arp_send(slave->dev, ARPOP_REPLY, vlan->vlan_ip, | |
2707 | vlan->vlan_ip, vlan->vlan_id); | |
2708 | } | |
1da177e4 LT |
2709 | } |
2710 | } | |
2711 | ||
d3bb52b0 | 2712 | static void bond_validate_arp(struct bonding *bond, struct slave *slave, __be32 sip, __be32 tip) |
f5b2b966 JV |
2713 | { |
2714 | int i; | |
d3bb52b0 | 2715 | __be32 *targets = bond->params.arp_targets; |
f5b2b966 | 2716 | |
f5b2b966 | 2717 | for (i = 0; (i < BOND_MAX_ARP_TARGETS) && targets[i]; i++) { |
5a03cdb7 | 2718 | pr_debug("bva: sip %pI4 tip %pI4 t[%d] %pI4 bhti(tip) %d\n", |
a4aee5c8 JP |
2719 | &sip, &tip, i, &targets[i], |
2720 | bond_has_this_ip(bond, tip)); | |
f5b2b966 JV |
2721 | if (sip == targets[i]) { |
2722 | if (bond_has_this_ip(bond, tip)) | |
2723 | slave->last_arp_rx = jiffies; | |
2724 | return; | |
2725 | } | |
2726 | } | |
2727 | } | |
2728 | ||
2729 | static int bond_arp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev) | |
2730 | { | |
2731 | struct arphdr *arp; | |
2732 | struct slave *slave; | |
2733 | struct bonding *bond; | |
2734 | unsigned char *arp_ptr; | |
d3bb52b0 | 2735 | __be32 sip, tip; |
f5b2b966 | 2736 | |
1f3c8804 AG |
2737 | if (dev->priv_flags & IFF_802_1Q_VLAN) { |
2738 | /* | |
2739 | * When using VLANS and bonding, dev and oriv_dev may be | |
2740 | * incorrect if the physical interface supports VLAN | |
2741 | * acceleration. With this change ARP validation now | |
2742 | * works for hosts only reachable on the VLAN interface. | |
2743 | */ | |
2744 | dev = vlan_dev_real_dev(dev); | |
2745 | orig_dev = dev_get_by_index_rcu(dev_net(skb->dev),skb->skb_iif); | |
2746 | } | |
2747 | ||
f5b2b966 JV |
2748 | if (!(dev->priv_flags & IFF_BONDING) || !(dev->flags & IFF_MASTER)) |
2749 | goto out; | |
2750 | ||
454d7c9b | 2751 | bond = netdev_priv(dev); |
f5b2b966 JV |
2752 | read_lock(&bond->lock); |
2753 | ||
5a03cdb7 | 2754 | pr_debug("bond_arp_rcv: bond %s skb->dev %s orig_dev %s\n", |
a4aee5c8 JP |
2755 | bond->dev->name, skb->dev ? skb->dev->name : "NULL", |
2756 | orig_dev ? orig_dev->name : "NULL"); | |
f5b2b966 JV |
2757 | |
2758 | slave = bond_get_slave_by_dev(bond, orig_dev); | |
2759 | if (!slave || !slave_do_arp_validate(bond, slave)) | |
2760 | goto out_unlock; | |
2761 | ||
988b7050 | 2762 | if (!pskb_may_pull(skb, arp_hdr_len(dev))) |
f5b2b966 JV |
2763 | goto out_unlock; |
2764 | ||
d0a92be0 | 2765 | arp = arp_hdr(skb); |
f5b2b966 JV |
2766 | if (arp->ar_hln != dev->addr_len || |
2767 | skb->pkt_type == PACKET_OTHERHOST || | |
2768 | skb->pkt_type == PACKET_LOOPBACK || | |
2769 | arp->ar_hrd != htons(ARPHRD_ETHER) || | |
2770 | arp->ar_pro != htons(ETH_P_IP) || | |
2771 | arp->ar_pln != 4) | |
2772 | goto out_unlock; | |
2773 | ||
2774 | arp_ptr = (unsigned char *)(arp + 1); | |
2775 | arp_ptr += dev->addr_len; | |
2776 | memcpy(&sip, arp_ptr, 4); | |
2777 | arp_ptr += 4 + dev->addr_len; | |
2778 | memcpy(&tip, arp_ptr, 4); | |
2779 | ||
5a03cdb7 | 2780 | pr_debug("bond_arp_rcv: %s %s/%d av %d sv %d sip %pI4 tip %pI4\n", |
a4aee5c8 JP |
2781 | bond->dev->name, slave->dev->name, slave->state, |
2782 | bond->params.arp_validate, slave_do_arp_validate(bond, slave), | |
2783 | &sip, &tip); | |
f5b2b966 JV |
2784 | |
2785 | /* | |
2786 | * Backup slaves won't see the ARP reply, but do come through | |
2787 | * here for each ARP probe (so we swap the sip/tip to validate | |
2788 | * the probe). In a "redundant switch, common router" type of | |
2789 | * configuration, the ARP probe will (hopefully) travel from | |
2790 | * the active, through one switch, the router, then the other | |
2791 | * switch before reaching the backup. | |
2792 | */ | |
2793 | if (slave->state == BOND_STATE_ACTIVE) | |
2794 | bond_validate_arp(bond, slave, sip, tip); | |
2795 | else | |
2796 | bond_validate_arp(bond, slave, tip, sip); | |
2797 | ||
2798 | out_unlock: | |
2799 | read_unlock(&bond->lock); | |
2800 | out: | |
2801 | dev_kfree_skb(skb); | |
2802 | return NET_RX_SUCCESS; | |
2803 | } | |
2804 | ||
1da177e4 LT |
2805 | /* |
2806 | * this function is called regularly to monitor each slave's link | |
2807 | * ensuring that traffic is being sent and received when arp monitoring | |
2808 | * is used in load-balancing mode. if the adapter has been dormant, then an | |
2809 | * arp is transmitted to generate traffic. see activebackup_arp_monitor for | |
2810 | * arp monitoring in active backup mode. | |
2811 | */ | |
1b76b316 | 2812 | void bond_loadbalance_arp_mon(struct work_struct *work) |
1da177e4 | 2813 | { |
1b76b316 JV |
2814 | struct bonding *bond = container_of(work, struct bonding, |
2815 | arp_work.work); | |
1da177e4 LT |
2816 | struct slave *slave, *oldcurrent; |
2817 | int do_failover = 0; | |
2818 | int delta_in_ticks; | |
2819 | int i; | |
2820 | ||
2821 | read_lock(&bond->lock); | |
2822 | ||
5ce0da8f | 2823 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
1da177e4 | 2824 | |
3d632c3f | 2825 | if (bond->kill_timers) |
1da177e4 | 2826 | goto out; |
1da177e4 | 2827 | |
3d632c3f | 2828 | if (bond->slave_cnt == 0) |
1da177e4 | 2829 | goto re_arm; |
1da177e4 LT |
2830 | |
2831 | read_lock(&bond->curr_slave_lock); | |
2832 | oldcurrent = bond->curr_active_slave; | |
2833 | read_unlock(&bond->curr_slave_lock); | |
2834 | ||
2835 | /* see if any of the previous devices are up now (i.e. they have | |
2836 | * xmt and rcv traffic). the curr_active_slave does not come into | |
2837 | * the picture unless it is null. also, slave->jiffies is not needed | |
2838 | * here because we send an arp on each slave and give a slave as | |
2839 | * long as it needs to get the tx/rx within the delta. | |
2840 | * TODO: what about up/down delay in arp mode? it wasn't here before | |
2841 | * so it can wait | |
2842 | */ | |
2843 | bond_for_each_slave(bond, slave, i) { | |
cb32f2a0 JB |
2844 | unsigned long trans_start = dev_trans_start(slave->dev); |
2845 | ||
1da177e4 | 2846 | if (slave->link != BOND_LINK_UP) { |
cb32f2a0 JB |
2847 | if (time_in_range(jiffies, |
2848 | trans_start - delta_in_ticks, | |
2849 | trans_start + delta_in_ticks) && | |
2850 | time_in_range(jiffies, | |
2851 | slave->dev->last_rx - delta_in_ticks, | |
2852 | slave->dev->last_rx + delta_in_ticks)) { | |
1da177e4 LT |
2853 | |
2854 | slave->link = BOND_LINK_UP; | |
2855 | slave->state = BOND_STATE_ACTIVE; | |
2856 | ||
2857 | /* primary_slave has no meaning in round-robin | |
2858 | * mode. the window of a slave being up and | |
2859 | * curr_active_slave being null after enslaving | |
2860 | * is closed. | |
2861 | */ | |
2862 | if (!oldcurrent) { | |
a4aee5c8 JP |
2863 | pr_info("%s: link status definitely up for interface %s, ", |
2864 | bond->dev->name, | |
2865 | slave->dev->name); | |
1da177e4 LT |
2866 | do_failover = 1; |
2867 | } else { | |
a4aee5c8 JP |
2868 | pr_info("%s: interface %s is now up\n", |
2869 | bond->dev->name, | |
2870 | slave->dev->name); | |
1da177e4 LT |
2871 | } |
2872 | } | |
2873 | } else { | |
2874 | /* slave->link == BOND_LINK_UP */ | |
2875 | ||
2876 | /* not all switches will respond to an arp request | |
2877 | * when the source ip is 0, so don't take the link down | |
2878 | * if we don't know our ip yet | |
2879 | */ | |
cb32f2a0 JB |
2880 | if (!time_in_range(jiffies, |
2881 | trans_start - delta_in_ticks, | |
2882 | trans_start + 2 * delta_in_ticks) || | |
2883 | !time_in_range(jiffies, | |
2884 | slave->dev->last_rx - delta_in_ticks, | |
2885 | slave->dev->last_rx + 2 * delta_in_ticks)) { | |
1da177e4 LT |
2886 | |
2887 | slave->link = BOND_LINK_DOWN; | |
2888 | slave->state = BOND_STATE_BACKUP; | |
2889 | ||
3d632c3f | 2890 | if (slave->link_failure_count < UINT_MAX) |
1da177e4 | 2891 | slave->link_failure_count++; |
1da177e4 | 2892 | |
a4aee5c8 JP |
2893 | pr_info("%s: interface %s is now down.\n", |
2894 | bond->dev->name, | |
2895 | slave->dev->name); | |
1da177e4 | 2896 | |
3d632c3f | 2897 | if (slave == oldcurrent) |
1da177e4 | 2898 | do_failover = 1; |
1da177e4 LT |
2899 | } |
2900 | } | |
2901 | ||
2902 | /* note: if switch is in round-robin mode, all links | |
2903 | * must tx arp to ensure all links rx an arp - otherwise | |
2904 | * links may oscillate or not come up at all; if switch is | |
2905 | * in something like xor mode, there is nothing we can | |
2906 | * do - all replies will be rx'ed on same link causing slaves | |
2907 | * to be unstable during low/no traffic periods | |
2908 | */ | |
3d632c3f | 2909 | if (IS_UP(slave->dev)) |
1da177e4 | 2910 | bond_arp_send_all(bond, slave); |
1da177e4 LT |
2911 | } |
2912 | ||
2913 | if (do_failover) { | |
e843fa50 | 2914 | block_netpoll_tx(); |
059fe7a5 | 2915 | write_lock_bh(&bond->curr_slave_lock); |
1da177e4 LT |
2916 | |
2917 | bond_select_active_slave(bond); | |
2918 | ||
059fe7a5 | 2919 | write_unlock_bh(&bond->curr_slave_lock); |
e843fa50 | 2920 | unblock_netpoll_tx(); |
1da177e4 LT |
2921 | } |
2922 | ||
2923 | re_arm: | |
1b76b316 JV |
2924 | if (bond->params.arp_interval) |
2925 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); | |
1da177e4 LT |
2926 | out: |
2927 | read_unlock(&bond->lock); | |
2928 | } | |
2929 | ||
2930 | /* | |
b2220cad JV |
2931 | * Called to inspect slaves for active-backup mode ARP monitor link state |
2932 | * changes. Sets new_link in slaves to specify what action should take | |
2933 | * place for the slave. Returns 0 if no changes are found, >0 if changes | |
2934 | * to link states must be committed. | |
2935 | * | |
2936 | * Called with bond->lock held for read. | |
1da177e4 | 2937 | */ |
b2220cad | 2938 | static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks) |
1da177e4 | 2939 | { |
1da177e4 | 2940 | struct slave *slave; |
b2220cad | 2941 | int i, commit = 0; |
cb32f2a0 | 2942 | unsigned long trans_start; |
1da177e4 | 2943 | |
b2220cad JV |
2944 | bond_for_each_slave(bond, slave, i) { |
2945 | slave->new_link = BOND_LINK_NOCHANGE; | |
1da177e4 | 2946 | |
b2220cad | 2947 | if (slave->link != BOND_LINK_UP) { |
cb32f2a0 JB |
2948 | if (time_in_range(jiffies, |
2949 | slave_last_rx(bond, slave) - delta_in_ticks, | |
2950 | slave_last_rx(bond, slave) + delta_in_ticks)) { | |
2951 | ||
b2220cad JV |
2952 | slave->new_link = BOND_LINK_UP; |
2953 | commit++; | |
2954 | } | |
1da177e4 | 2955 | |
b2220cad JV |
2956 | continue; |
2957 | } | |
1da177e4 | 2958 | |
b2220cad JV |
2959 | /* |
2960 | * Give slaves 2*delta after being enslaved or made | |
2961 | * active. This avoids bouncing, as the last receive | |
2962 | * times need a full ARP monitor cycle to be updated. | |
2963 | */ | |
cb32f2a0 JB |
2964 | if (time_in_range(jiffies, |
2965 | slave->jiffies - delta_in_ticks, | |
2966 | slave->jiffies + 2 * delta_in_ticks)) | |
b2220cad JV |
2967 | continue; |
2968 | ||
2969 | /* | |
2970 | * Backup slave is down if: | |
2971 | * - No current_arp_slave AND | |
2972 | * - more than 3*delta since last receive AND | |
2973 | * - the bond has an IP address | |
2974 | * | |
2975 | * Note: a non-null current_arp_slave indicates | |
2976 | * the curr_active_slave went down and we are | |
2977 | * searching for a new one; under this condition | |
2978 | * we only take the curr_active_slave down - this | |
2979 | * gives each slave a chance to tx/rx traffic | |
2980 | * before being taken out | |
2981 | */ | |
2982 | if (slave->state == BOND_STATE_BACKUP && | |
2983 | !bond->current_arp_slave && | |
cb32f2a0 JB |
2984 | !time_in_range(jiffies, |
2985 | slave_last_rx(bond, slave) - delta_in_ticks, | |
2986 | slave_last_rx(bond, slave) + 3 * delta_in_ticks)) { | |
2987 | ||
b2220cad JV |
2988 | slave->new_link = BOND_LINK_DOWN; |
2989 | commit++; | |
2990 | } | |
2991 | ||
2992 | /* | |
2993 | * Active slave is down if: | |
2994 | * - more than 2*delta since transmitting OR | |
2995 | * - (more than 2*delta since receive AND | |
2996 | * the bond has an IP address) | |
2997 | */ | |
cb32f2a0 | 2998 | trans_start = dev_trans_start(slave->dev); |
b2220cad | 2999 | if ((slave->state == BOND_STATE_ACTIVE) && |
cb32f2a0 JB |
3000 | (!time_in_range(jiffies, |
3001 | trans_start - delta_in_ticks, | |
3002 | trans_start + 2 * delta_in_ticks) || | |
3003 | !time_in_range(jiffies, | |
3004 | slave_last_rx(bond, slave) - delta_in_ticks, | |
3005 | slave_last_rx(bond, slave) + 2 * delta_in_ticks))) { | |
3006 | ||
b2220cad JV |
3007 | slave->new_link = BOND_LINK_DOWN; |
3008 | commit++; | |
3009 | } | |
1da177e4 LT |
3010 | } |
3011 | ||
b2220cad JV |
3012 | return commit; |
3013 | } | |
1da177e4 | 3014 | |
b2220cad JV |
3015 | /* |
3016 | * Called to commit link state changes noted by inspection step of | |
3017 | * active-backup mode ARP monitor. | |
3018 | * | |
3019 | * Called with RTNL and bond->lock for read. | |
3020 | */ | |
3021 | static void bond_ab_arp_commit(struct bonding *bond, int delta_in_ticks) | |
3022 | { | |
3023 | struct slave *slave; | |
3024 | int i; | |
cb32f2a0 | 3025 | unsigned long trans_start; |
1da177e4 | 3026 | |
b2220cad JV |
3027 | bond_for_each_slave(bond, slave, i) { |
3028 | switch (slave->new_link) { | |
3029 | case BOND_LINK_NOCHANGE: | |
3030 | continue; | |
ff59c456 | 3031 | |
b2220cad | 3032 | case BOND_LINK_UP: |
cb32f2a0 | 3033 | trans_start = dev_trans_start(slave->dev); |
b9f60253 | 3034 | if ((!bond->curr_active_slave && |
cb32f2a0 JB |
3035 | time_in_range(jiffies, |
3036 | trans_start - delta_in_ticks, | |
3037 | trans_start + delta_in_ticks)) || | |
b9f60253 | 3038 | bond->curr_active_slave != slave) { |
b2220cad | 3039 | slave->link = BOND_LINK_UP; |
b2220cad JV |
3040 | bond->current_arp_slave = NULL; |
3041 | ||
a4aee5c8 | 3042 | pr_info("%s: link status definitely up for interface %s.\n", |
b9f60253 | 3043 | bond->dev->name, slave->dev->name); |
b2220cad | 3044 | |
b9f60253 JP |
3045 | if (!bond->curr_active_slave || |
3046 | (slave == bond->primary_slave)) | |
3047 | goto do_failover; | |
1da177e4 | 3048 | |
b9f60253 | 3049 | } |
1da177e4 | 3050 | |
b9f60253 | 3051 | continue; |
1da177e4 | 3052 | |
b2220cad JV |
3053 | case BOND_LINK_DOWN: |
3054 | if (slave->link_failure_count < UINT_MAX) | |
3055 | slave->link_failure_count++; | |
3056 | ||
3057 | slave->link = BOND_LINK_DOWN; | |
b9f60253 | 3058 | bond_set_slave_inactive_flags(slave); |
b2220cad | 3059 | |
a4aee5c8 | 3060 | pr_info("%s: link status definitely down for interface %s, disabling it\n", |
b9f60253 | 3061 | bond->dev->name, slave->dev->name); |
b2220cad | 3062 | |
b9f60253 | 3063 | if (slave == bond->curr_active_slave) { |
b2220cad | 3064 | bond->current_arp_slave = NULL; |
b9f60253 | 3065 | goto do_failover; |
1da177e4 | 3066 | } |
b9f60253 JP |
3067 | |
3068 | continue; | |
b2220cad JV |
3069 | |
3070 | default: | |
a4aee5c8 | 3071 | pr_err("%s: impossible: new_link %d on slave %s\n", |
b2220cad JV |
3072 | bond->dev->name, slave->new_link, |
3073 | slave->dev->name); | |
b9f60253 | 3074 | continue; |
1da177e4 | 3075 | } |
1da177e4 | 3076 | |
b9f60253 JP |
3077 | do_failover: |
3078 | ASSERT_RTNL(); | |
e843fa50 | 3079 | block_netpoll_tx(); |
b2220cad | 3080 | write_lock_bh(&bond->curr_slave_lock); |
b9f60253 | 3081 | bond_select_active_slave(bond); |
b2220cad | 3082 | write_unlock_bh(&bond->curr_slave_lock); |
e843fa50 | 3083 | unblock_netpoll_tx(); |
b2220cad | 3084 | } |
1da177e4 | 3085 | |
b2220cad JV |
3086 | bond_set_carrier(bond); |
3087 | } | |
1da177e4 | 3088 | |
b2220cad JV |
3089 | /* |
3090 | * Send ARP probes for active-backup mode ARP monitor. | |
3091 | * | |
3092 | * Called with bond->lock held for read. | |
3093 | */ | |
3094 | static void bond_ab_arp_probe(struct bonding *bond) | |
3095 | { | |
3096 | struct slave *slave; | |
3097 | int i; | |
1da177e4 | 3098 | |
b2220cad | 3099 | read_lock(&bond->curr_slave_lock); |
1da177e4 | 3100 | |
b2220cad | 3101 | if (bond->current_arp_slave && bond->curr_active_slave) |
a4aee5c8 JP |
3102 | pr_info("PROBE: c_arp %s && cas %s BAD\n", |
3103 | bond->current_arp_slave->dev->name, | |
3104 | bond->curr_active_slave->dev->name); | |
1da177e4 | 3105 | |
b2220cad JV |
3106 | if (bond->curr_active_slave) { |
3107 | bond_arp_send_all(bond, bond->curr_active_slave); | |
3108 | read_unlock(&bond->curr_slave_lock); | |
3109 | return; | |
3110 | } | |
1da177e4 | 3111 | |
b2220cad | 3112 | read_unlock(&bond->curr_slave_lock); |
059fe7a5 | 3113 | |
b2220cad JV |
3114 | /* if we don't have a curr_active_slave, search for the next available |
3115 | * backup slave from the current_arp_slave and make it the candidate | |
3116 | * for becoming the curr_active_slave | |
3117 | */ | |
1da177e4 | 3118 | |
b2220cad JV |
3119 | if (!bond->current_arp_slave) { |
3120 | bond->current_arp_slave = bond->first_slave; | |
3121 | if (!bond->current_arp_slave) | |
3122 | return; | |
3123 | } | |
1da177e4 | 3124 | |
b2220cad | 3125 | bond_set_slave_inactive_flags(bond->current_arp_slave); |
059fe7a5 | 3126 | |
b2220cad JV |
3127 | /* search for next candidate */ |
3128 | bond_for_each_slave_from(bond, slave, i, bond->current_arp_slave->next) { | |
3129 | if (IS_UP(slave->dev)) { | |
3130 | slave->link = BOND_LINK_BACK; | |
3131 | bond_set_slave_active_flags(slave); | |
3132 | bond_arp_send_all(bond, slave); | |
1da177e4 | 3133 | slave->jiffies = jiffies; |
b2220cad JV |
3134 | bond->current_arp_slave = slave; |
3135 | break; | |
1da177e4 LT |
3136 | } |
3137 | ||
b2220cad JV |
3138 | /* if the link state is up at this point, we |
3139 | * mark it down - this can happen if we have | |
3140 | * simultaneous link failures and | |
3141 | * reselect_active_interface doesn't make this | |
3142 | * one the current slave so it is still marked | |
3143 | * up when it is actually down | |
1da177e4 | 3144 | */ |
b2220cad JV |
3145 | if (slave->link == BOND_LINK_UP) { |
3146 | slave->link = BOND_LINK_DOWN; | |
3147 | if (slave->link_failure_count < UINT_MAX) | |
3148 | slave->link_failure_count++; | |
1da177e4 | 3149 | |
b2220cad JV |
3150 | bond_set_slave_inactive_flags(slave); |
3151 | ||
a4aee5c8 JP |
3152 | pr_info("%s: backup interface %s is now down.\n", |
3153 | bond->dev->name, slave->dev->name); | |
1da177e4 | 3154 | } |
b2220cad JV |
3155 | } |
3156 | } | |
1da177e4 | 3157 | |
b2220cad JV |
3158 | void bond_activebackup_arp_mon(struct work_struct *work) |
3159 | { | |
3160 | struct bonding *bond = container_of(work, struct bonding, | |
3161 | arp_work.work); | |
3162 | int delta_in_ticks; | |
1da177e4 | 3163 | |
b2220cad | 3164 | read_lock(&bond->lock); |
1da177e4 | 3165 | |
b2220cad JV |
3166 | if (bond->kill_timers) |
3167 | goto out; | |
1da177e4 | 3168 | |
b2220cad | 3169 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
1da177e4 | 3170 | |
b2220cad JV |
3171 | if (bond->slave_cnt == 0) |
3172 | goto re_arm; | |
3173 | ||
b59f9f74 JV |
3174 | if (bond->send_grat_arp) { |
3175 | read_lock(&bond->curr_slave_lock); | |
3176 | bond_send_gratuitous_arp(bond); | |
3177 | read_unlock(&bond->curr_slave_lock); | |
3178 | } | |
3179 | ||
305d552a BH |
3180 | if (bond->send_unsol_na) { |
3181 | read_lock(&bond->curr_slave_lock); | |
3182 | bond_send_unsolicited_na(bond); | |
3183 | read_unlock(&bond->curr_slave_lock); | |
3184 | } | |
3185 | ||
b2220cad JV |
3186 | if (bond_ab_arp_inspect(bond, delta_in_ticks)) { |
3187 | read_unlock(&bond->lock); | |
3188 | rtnl_lock(); | |
3189 | read_lock(&bond->lock); | |
3190 | ||
3191 | bond_ab_arp_commit(bond, delta_in_ticks); | |
3192 | ||
3193 | read_unlock(&bond->lock); | |
3194 | rtnl_unlock(); | |
3195 | read_lock(&bond->lock); | |
1da177e4 LT |
3196 | } |
3197 | ||
b2220cad JV |
3198 | bond_ab_arp_probe(bond); |
3199 | ||
1da177e4 | 3200 | re_arm: |
3d632c3f | 3201 | if (bond->params.arp_interval) |
1b76b316 | 3202 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); |
1da177e4 LT |
3203 | out: |
3204 | read_unlock(&bond->lock); | |
3205 | } | |
3206 | ||
3207 | /*------------------------------ proc/seq_file-------------------------------*/ | |
3208 | ||
3209 | #ifdef CONFIG_PROC_FS | |
3210 | ||
1da177e4 | 3211 | static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos) |
1f78d9f9 HE |
3212 | __acquires(&dev_base_lock) |
3213 | __acquires(&bond->lock) | |
1da177e4 LT |
3214 | { |
3215 | struct bonding *bond = seq->private; | |
3216 | loff_t off = 0; | |
3217 | struct slave *slave; | |
3218 | int i; | |
3219 | ||
3220 | /* make sure the bond won't be taken away */ | |
3221 | read_lock(&dev_base_lock); | |
6603a6f2 | 3222 | read_lock(&bond->lock); |
1da177e4 | 3223 | |
3d632c3f | 3224 | if (*pos == 0) |
1da177e4 | 3225 | return SEQ_START_TOKEN; |
1da177e4 LT |
3226 | |
3227 | bond_for_each_slave(bond, slave, i) { | |
3d632c3f | 3228 | if (++off == *pos) |
1da177e4 | 3229 | return slave; |
1da177e4 LT |
3230 | } |
3231 | ||
3232 | return NULL; | |
3233 | } | |
3234 | ||
3235 | static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
3236 | { | |
3237 | struct bonding *bond = seq->private; | |
3238 | struct slave *slave = v; | |
3239 | ||
3240 | ++*pos; | |
3d632c3f | 3241 | if (v == SEQ_START_TOKEN) |
1da177e4 | 3242 | return bond->first_slave; |
1da177e4 LT |
3243 | |
3244 | slave = slave->next; | |
3245 | ||
3246 | return (slave == bond->first_slave) ? NULL : slave; | |
3247 | } | |
3248 | ||
3249 | static void bond_info_seq_stop(struct seq_file *seq, void *v) | |
1f78d9f9 HE |
3250 | __releases(&bond->lock) |
3251 | __releases(&dev_base_lock) | |
1da177e4 LT |
3252 | { |
3253 | struct bonding *bond = seq->private; | |
3254 | ||
6603a6f2 | 3255 | read_unlock(&bond->lock); |
1da177e4 LT |
3256 | read_unlock(&dev_base_lock); |
3257 | } | |
3258 | ||
3259 | static void bond_info_show_master(struct seq_file *seq) | |
3260 | { | |
3261 | struct bonding *bond = seq->private; | |
3262 | struct slave *curr; | |
4756b02f | 3263 | int i; |
1da177e4 LT |
3264 | |
3265 | read_lock(&bond->curr_slave_lock); | |
3266 | curr = bond->curr_active_slave; | |
3267 | read_unlock(&bond->curr_slave_lock); | |
3268 | ||
dd957c57 | 3269 | seq_printf(seq, "Bonding Mode: %s", |
1da177e4 LT |
3270 | bond_mode_name(bond->params.mode)); |
3271 | ||
dd957c57 JV |
3272 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP && |
3273 | bond->params.fail_over_mac) | |
3915c1e8 JV |
3274 | seq_printf(seq, " (fail_over_mac %s)", |
3275 | fail_over_mac_tbl[bond->params.fail_over_mac].modename); | |
dd957c57 JV |
3276 | |
3277 | seq_printf(seq, "\n"); | |
3278 | ||
c61b75ad MW |
3279 | if (bond->params.mode == BOND_MODE_XOR || |
3280 | bond->params.mode == BOND_MODE_8023AD) { | |
3281 | seq_printf(seq, "Transmit Hash Policy: %s (%d)\n", | |
3282 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, | |
3283 | bond->params.xmit_policy); | |
3284 | } | |
3285 | ||
1da177e4 | 3286 | if (USES_PRIMARY(bond->params.mode)) { |
a549952a | 3287 | seq_printf(seq, "Primary Slave: %s", |
0f418b2a MW |
3288 | (bond->primary_slave) ? |
3289 | bond->primary_slave->dev->name : "None"); | |
a549952a JP |
3290 | if (bond->primary_slave) |
3291 | seq_printf(seq, " (primary_reselect %s)", | |
3292 | pri_reselect_tbl[bond->params.primary_reselect].modename); | |
1da177e4 | 3293 | |
a549952a | 3294 | seq_printf(seq, "\nCurrently Active Slave: %s\n", |
1da177e4 LT |
3295 | (curr) ? curr->dev->name : "None"); |
3296 | } | |
3297 | ||
ff59c456 JV |
3298 | seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ? |
3299 | "up" : "down"); | |
1da177e4 LT |
3300 | seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon); |
3301 | seq_printf(seq, "Up Delay (ms): %d\n", | |
3302 | bond->params.updelay * bond->params.miimon); | |
3303 | seq_printf(seq, "Down Delay (ms): %d\n", | |
3304 | bond->params.downdelay * bond->params.miimon); | |
3305 | ||
4756b02f MW |
3306 | |
3307 | /* ARP information */ | |
3d632c3f SH |
3308 | if (bond->params.arp_interval > 0) { |
3309 | int printed = 0; | |
4756b02f MW |
3310 | seq_printf(seq, "ARP Polling Interval (ms): %d\n", |
3311 | bond->params.arp_interval); | |
3312 | ||
3313 | seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); | |
3314 | ||
3d632c3f | 3315 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
4756b02f | 3316 | if (!bond->params.arp_targets[i]) |
5a31bec0 | 3317 | break; |
4756b02f MW |
3318 | if (printed) |
3319 | seq_printf(seq, ","); | |
8cf14e38 | 3320 | seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); |
4756b02f MW |
3321 | printed = 1; |
3322 | } | |
3323 | seq_printf(seq, "\n"); | |
3324 | } | |
3325 | ||
1da177e4 LT |
3326 | if (bond->params.mode == BOND_MODE_8023AD) { |
3327 | struct ad_info ad_info; | |
3328 | ||
3329 | seq_puts(seq, "\n802.3ad info\n"); | |
3330 | seq_printf(seq, "LACP rate: %s\n", | |
3331 | (bond->params.lacp_fast) ? "fast" : "slow"); | |
fd989c83 JV |
3332 | seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", |
3333 | ad_select_tbl[bond->params.ad_select].modename); | |
1da177e4 LT |
3334 | |
3335 | if (bond_3ad_get_active_agg_info(bond, &ad_info)) { | |
3336 | seq_printf(seq, "bond %s has no active aggregator\n", | |
3337 | bond->dev->name); | |
3338 | } else { | |
3339 | seq_printf(seq, "Active Aggregator Info:\n"); | |
3340 | ||
3341 | seq_printf(seq, "\tAggregator ID: %d\n", | |
3342 | ad_info.aggregator_id); | |
3343 | seq_printf(seq, "\tNumber of ports: %d\n", | |
3344 | ad_info.ports); | |
3345 | seq_printf(seq, "\tActor Key: %d\n", | |
3346 | ad_info.actor_key); | |
3347 | seq_printf(seq, "\tPartner Key: %d\n", | |
3348 | ad_info.partner_key); | |
e174961c JB |
3349 | seq_printf(seq, "\tPartner Mac Address: %pM\n", |
3350 | ad_info.partner_system); | |
1da177e4 LT |
3351 | } |
3352 | } | |
3353 | } | |
3354 | ||
3d632c3f SH |
3355 | static void bond_info_show_slave(struct seq_file *seq, |
3356 | const struct slave *slave) | |
1da177e4 LT |
3357 | { |
3358 | struct bonding *bond = seq->private; | |
3359 | ||
3360 | seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); | |
3361 | seq_printf(seq, "MII Status: %s\n", | |
3362 | (slave->link == BOND_LINK_UP) ? "up" : "down"); | |
dd53df26 KO |
3363 | seq_printf(seq, "Speed: %d Mbps\n", slave->speed); |
3364 | seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half"); | |
65509645 | 3365 | seq_printf(seq, "Link Failure Count: %u\n", |
1da177e4 LT |
3366 | slave->link_failure_count); |
3367 | ||
e174961c | 3368 | seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr); |
1da177e4 LT |
3369 | |
3370 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3371 | const struct aggregator *agg | |
3372 | = SLAVE_AD_INFO(slave).port.aggregator; | |
3373 | ||
3d632c3f | 3374 | if (agg) |
1da177e4 LT |
3375 | seq_printf(seq, "Aggregator ID: %d\n", |
3376 | agg->aggregator_identifier); | |
3d632c3f | 3377 | else |
1da177e4 | 3378 | seq_puts(seq, "Aggregator ID: N/A\n"); |
1da177e4 | 3379 | } |
bb1d9123 | 3380 | seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id); |
1da177e4 LT |
3381 | } |
3382 | ||
3383 | static int bond_info_seq_show(struct seq_file *seq, void *v) | |
3384 | { | |
3385 | if (v == SEQ_START_TOKEN) { | |
3386 | seq_printf(seq, "%s\n", version); | |
3387 | bond_info_show_master(seq); | |
3d632c3f | 3388 | } else |
1da177e4 | 3389 | bond_info_show_slave(seq, v); |
1da177e4 LT |
3390 | |
3391 | return 0; | |
3392 | } | |
3393 | ||
4101dec9 | 3394 | static const struct seq_operations bond_info_seq_ops = { |
1da177e4 LT |
3395 | .start = bond_info_seq_start, |
3396 | .next = bond_info_seq_next, | |
3397 | .stop = bond_info_seq_stop, | |
3398 | .show = bond_info_seq_show, | |
3399 | }; | |
3400 | ||
3401 | static int bond_info_open(struct inode *inode, struct file *file) | |
3402 | { | |
3403 | struct seq_file *seq; | |
3404 | struct proc_dir_entry *proc; | |
3405 | int res; | |
3406 | ||
3407 | res = seq_open(file, &bond_info_seq_ops); | |
3408 | if (!res) { | |
3409 | /* recover the pointer buried in proc_dir_entry data */ | |
3410 | seq = file->private_data; | |
3411 | proc = PDE(inode); | |
3412 | seq->private = proc->data; | |
3413 | } | |
3414 | ||
3415 | return res; | |
3416 | } | |
3417 | ||
d54b1fdb | 3418 | static const struct file_operations bond_info_fops = { |
1da177e4 LT |
3419 | .owner = THIS_MODULE, |
3420 | .open = bond_info_open, | |
3421 | .read = seq_read, | |
3422 | .llseek = seq_lseek, | |
3423 | .release = seq_release, | |
3424 | }; | |
3425 | ||
38fc0026 | 3426 | static void bond_create_proc_entry(struct bonding *bond) |
1da177e4 LT |
3427 | { |
3428 | struct net_device *bond_dev = bond->dev; | |
ec87fd3b | 3429 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); |
1da177e4 | 3430 | |
ec87fd3b | 3431 | if (bn->proc_dir) { |
a95609cb | 3432 | bond->proc_entry = proc_create_data(bond_dev->name, |
ec87fd3b | 3433 | S_IRUGO, bn->proc_dir, |
a95609cb | 3434 | &bond_info_fops, bond); |
3d632c3f | 3435 | if (bond->proc_entry == NULL) |
a4aee5c8 JP |
3436 | pr_warning("Warning: Cannot create /proc/net/%s/%s\n", |
3437 | DRV_NAME, bond_dev->name); | |
3d632c3f | 3438 | else |
1da177e4 | 3439 | memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); |
1da177e4 | 3440 | } |
1da177e4 LT |
3441 | } |
3442 | ||
3443 | static void bond_remove_proc_entry(struct bonding *bond) | |
3444 | { | |
ec87fd3b EB |
3445 | struct net_device *bond_dev = bond->dev; |
3446 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); | |
3447 | ||
3448 | if (bn->proc_dir && bond->proc_entry) { | |
3449 | remove_proc_entry(bond->proc_file_name, bn->proc_dir); | |
1da177e4 LT |
3450 | memset(bond->proc_file_name, 0, IFNAMSIZ); |
3451 | bond->proc_entry = NULL; | |
3452 | } | |
3453 | } | |
3454 | ||
3455 | /* Create the bonding directory under /proc/net, if doesn't exist yet. | |
3456 | * Caller must hold rtnl_lock. | |
3457 | */ | |
2c8c1e72 | 3458 | static void __net_init bond_create_proc_dir(struct bond_net *bn) |
1da177e4 | 3459 | { |
ec87fd3b EB |
3460 | if (!bn->proc_dir) { |
3461 | bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net); | |
3462 | if (!bn->proc_dir) | |
a4aee5c8 JP |
3463 | pr_warning("Warning: cannot create /proc/net/%s\n", |
3464 | DRV_NAME); | |
1da177e4 LT |
3465 | } |
3466 | } | |
3467 | ||
3468 | /* Destroy the bonding directory under /proc/net, if empty. | |
3469 | * Caller must hold rtnl_lock. | |
3470 | */ | |
2c8c1e72 | 3471 | static void __net_exit bond_destroy_proc_dir(struct bond_net *bn) |
1da177e4 | 3472 | { |
ec87fd3b EB |
3473 | if (bn->proc_dir) { |
3474 | remove_proc_entry(DRV_NAME, bn->net->proc_net); | |
3475 | bn->proc_dir = NULL; | |
1da177e4 LT |
3476 | } |
3477 | } | |
aee64faf JP |
3478 | |
3479 | #else /* !CONFIG_PROC_FS */ | |
3480 | ||
38fc0026 | 3481 | static void bond_create_proc_entry(struct bonding *bond) |
aee64faf JP |
3482 | { |
3483 | } | |
3484 | ||
3485 | static void bond_remove_proc_entry(struct bonding *bond) | |
3486 | { | |
3487 | } | |
3488 | ||
2c8c1e72 | 3489 | static inline void bond_create_proc_dir(struct bond_net *bn) |
aee64faf JP |
3490 | { |
3491 | } | |
3492 | ||
2c8c1e72 | 3493 | static inline void bond_destroy_proc_dir(struct bond_net *bn) |
aee64faf JP |
3494 | { |
3495 | } | |
3496 | ||
1da177e4 LT |
3497 | #endif /* CONFIG_PROC_FS */ |
3498 | ||
aee64faf | 3499 | |
1da177e4 LT |
3500 | /*-------------------------- netdev event handling --------------------------*/ |
3501 | ||
3502 | /* | |
3503 | * Change device name | |
3504 | */ | |
3505 | static int bond_event_changename(struct bonding *bond) | |
3506 | { | |
1da177e4 LT |
3507 | bond_remove_proc_entry(bond); |
3508 | bond_create_proc_entry(bond); | |
7e083840 | 3509 | |
1da177e4 LT |
3510 | return NOTIFY_DONE; |
3511 | } | |
3512 | ||
3d632c3f SH |
3513 | static int bond_master_netdev_event(unsigned long event, |
3514 | struct net_device *bond_dev) | |
1da177e4 | 3515 | { |
454d7c9b | 3516 | struct bonding *event_bond = netdev_priv(bond_dev); |
1da177e4 LT |
3517 | |
3518 | switch (event) { | |
3519 | case NETDEV_CHANGENAME: | |
3520 | return bond_event_changename(event_bond); | |
1da177e4 LT |
3521 | default: |
3522 | break; | |
3523 | } | |
3524 | ||
3525 | return NOTIFY_DONE; | |
3526 | } | |
3527 | ||
3d632c3f SH |
3528 | static int bond_slave_netdev_event(unsigned long event, |
3529 | struct net_device *slave_dev) | |
1da177e4 LT |
3530 | { |
3531 | struct net_device *bond_dev = slave_dev->master; | |
454d7c9b | 3532 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3533 | |
3534 | switch (event) { | |
3535 | case NETDEV_UNREGISTER: | |
3536 | if (bond_dev) { | |
1284cd3a JV |
3537 | if (bond->setup_by_slave) |
3538 | bond_release_and_destroy(bond_dev, slave_dev); | |
3539 | else | |
3540 | bond_release(bond_dev, slave_dev); | |
1da177e4 LT |
3541 | } |
3542 | break; | |
3543 | case NETDEV_CHANGE: | |
17d04500 JV |
3544 | if (bond->params.mode == BOND_MODE_8023AD || bond_is_lb(bond)) { |
3545 | struct slave *slave; | |
3546 | ||
3547 | slave = bond_get_slave_by_dev(bond, slave_dev); | |
3548 | if (slave) { | |
3549 | u16 old_speed = slave->speed; | |
3550 | u16 old_duplex = slave->duplex; | |
3551 | ||
3552 | bond_update_speed_duplex(slave); | |
3553 | ||
3554 | if (bond_is_lb(bond)) | |
3555 | break; | |
3556 | ||
3557 | if (old_speed != slave->speed) | |
3558 | bond_3ad_adapter_speed_changed(slave); | |
3559 | if (old_duplex != slave->duplex) | |
3560 | bond_3ad_adapter_duplex_changed(slave); | |
3561 | } | |
3562 | } | |
3563 | ||
1da177e4 LT |
3564 | break; |
3565 | case NETDEV_DOWN: | |
3566 | /* | |
3567 | * ... Or is it this? | |
3568 | */ | |
3569 | break; | |
3570 | case NETDEV_CHANGEMTU: | |
3571 | /* | |
3572 | * TODO: Should slaves be allowed to | |
3573 | * independently alter their MTU? For | |
3574 | * an active-backup bond, slaves need | |
3575 | * not be the same type of device, so | |
3576 | * MTUs may vary. For other modes, | |
3577 | * slaves arguably should have the | |
3578 | * same MTUs. To do this, we'd need to | |
3579 | * take over the slave's change_mtu | |
3580 | * function for the duration of their | |
3581 | * servitude. | |
3582 | */ | |
3583 | break; | |
3584 | case NETDEV_CHANGENAME: | |
3585 | /* | |
3586 | * TODO: handle changing the primary's name | |
3587 | */ | |
3588 | break; | |
8531c5ff AK |
3589 | case NETDEV_FEAT_CHANGE: |
3590 | bond_compute_features(bond); | |
3591 | break; | |
1da177e4 LT |
3592 | default: |
3593 | break; | |
3594 | } | |
3595 | ||
3596 | return NOTIFY_DONE; | |
3597 | } | |
3598 | ||
3599 | /* | |
3600 | * bond_netdev_event: handle netdev notifier chain events. | |
3601 | * | |
3602 | * This function receives events for the netdev chain. The caller (an | |
e041c683 | 3603 | * ioctl handler calling blocking_notifier_call_chain) holds the necessary |
1da177e4 LT |
3604 | * locks for us to safely manipulate the slave devices (RTNL lock, |
3605 | * dev_probe_lock). | |
3606 | */ | |
3d632c3f SH |
3607 | static int bond_netdev_event(struct notifier_block *this, |
3608 | unsigned long event, void *ptr) | |
1da177e4 LT |
3609 | { |
3610 | struct net_device *event_dev = (struct net_device *)ptr; | |
3611 | ||
5a03cdb7 | 3612 | pr_debug("event_dev: %s, event: %lx\n", |
a4aee5c8 JP |
3613 | event_dev ? event_dev->name : "None", |
3614 | event); | |
1da177e4 | 3615 | |
0b680e75 JV |
3616 | if (!(event_dev->priv_flags & IFF_BONDING)) |
3617 | return NOTIFY_DONE; | |
3618 | ||
1da177e4 | 3619 | if (event_dev->flags & IFF_MASTER) { |
5a03cdb7 | 3620 | pr_debug("IFF_MASTER\n"); |
1da177e4 LT |
3621 | return bond_master_netdev_event(event, event_dev); |
3622 | } | |
3623 | ||
3624 | if (event_dev->flags & IFF_SLAVE) { | |
5a03cdb7 | 3625 | pr_debug("IFF_SLAVE\n"); |
1da177e4 LT |
3626 | return bond_slave_netdev_event(event, event_dev); |
3627 | } | |
3628 | ||
3629 | return NOTIFY_DONE; | |
3630 | } | |
3631 | ||
c3ade5ca JV |
3632 | /* |
3633 | * bond_inetaddr_event: handle inetaddr notifier chain events. | |
3634 | * | |
3635 | * We keep track of device IPs primarily to use as source addresses in | |
3636 | * ARP monitor probes (rather than spewing out broadcasts all the time). | |
3637 | * | |
3638 | * We track one IP for the main device (if it has one), plus one per VLAN. | |
3639 | */ | |
3640 | static int bond_inetaddr_event(struct notifier_block *this, unsigned long event, void *ptr) | |
3641 | { | |
3642 | struct in_ifaddr *ifa = ptr; | |
3643 | struct net_device *vlan_dev, *event_dev = ifa->ifa_dev->dev; | |
ec87fd3b | 3644 | struct bond_net *bn = net_generic(dev_net(event_dev), bond_net_id); |
0883beca PE |
3645 | struct bonding *bond; |
3646 | struct vlan_entry *vlan; | |
c3ade5ca | 3647 | |
ec87fd3b | 3648 | list_for_each_entry(bond, &bn->dev_list, bond_list) { |
c3ade5ca JV |
3649 | if (bond->dev == event_dev) { |
3650 | switch (event) { | |
3651 | case NETDEV_UP: | |
3652 | bond->master_ip = ifa->ifa_local; | |
3653 | return NOTIFY_OK; | |
3654 | case NETDEV_DOWN: | |
3655 | bond->master_ip = bond_glean_dev_ip(bond->dev); | |
3656 | return NOTIFY_OK; | |
3657 | default: | |
3658 | return NOTIFY_DONE; | |
3659 | } | |
3660 | } | |
3661 | ||
0883beca | 3662 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
f35188fa JV |
3663 | if (!bond->vlgrp) |
3664 | continue; | |
5c15bdec | 3665 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
3666 | if (vlan_dev == event_dev) { |
3667 | switch (event) { | |
3668 | case NETDEV_UP: | |
3669 | vlan->vlan_ip = ifa->ifa_local; | |
3670 | return NOTIFY_OK; | |
3671 | case NETDEV_DOWN: | |
3672 | vlan->vlan_ip = | |
3673 | bond_glean_dev_ip(vlan_dev); | |
3674 | return NOTIFY_OK; | |
3675 | default: | |
3676 | return NOTIFY_DONE; | |
3677 | } | |
3678 | } | |
3679 | } | |
3680 | } | |
3681 | return NOTIFY_DONE; | |
3682 | } | |
3683 | ||
1da177e4 LT |
3684 | static struct notifier_block bond_netdev_notifier = { |
3685 | .notifier_call = bond_netdev_event, | |
3686 | }; | |
3687 | ||
c3ade5ca JV |
3688 | static struct notifier_block bond_inetaddr_notifier = { |
3689 | .notifier_call = bond_inetaddr_event, | |
3690 | }; | |
3691 | ||
1da177e4 LT |
3692 | /*-------------------------- Packet type handling ---------------------------*/ |
3693 | ||
3694 | /* register to receive lacpdus on a bond */ | |
3695 | static void bond_register_lacpdu(struct bonding *bond) | |
3696 | { | |
3697 | struct packet_type *pk_type = &(BOND_AD_INFO(bond).ad_pkt_type); | |
3698 | ||
3699 | /* initialize packet type */ | |
3700 | pk_type->type = PKT_TYPE_LACPDU; | |
3701 | pk_type->dev = bond->dev; | |
3702 | pk_type->func = bond_3ad_lacpdu_recv; | |
3703 | ||
3704 | dev_add_pack(pk_type); | |
3705 | } | |
3706 | ||
3707 | /* unregister to receive lacpdus on a bond */ | |
3708 | static void bond_unregister_lacpdu(struct bonding *bond) | |
3709 | { | |
3710 | dev_remove_pack(&(BOND_AD_INFO(bond).ad_pkt_type)); | |
3711 | } | |
3712 | ||
f5b2b966 JV |
3713 | void bond_register_arp(struct bonding *bond) |
3714 | { | |
3715 | struct packet_type *pt = &bond->arp_mon_pt; | |
3716 | ||
c4f283b1 JV |
3717 | if (pt->type) |
3718 | return; | |
3719 | ||
f5b2b966 | 3720 | pt->type = htons(ETH_P_ARP); |
e245cb71 | 3721 | pt->dev = bond->dev; |
f5b2b966 JV |
3722 | pt->func = bond_arp_rcv; |
3723 | dev_add_pack(pt); | |
3724 | } | |
3725 | ||
3726 | void bond_unregister_arp(struct bonding *bond) | |
3727 | { | |
c4f283b1 JV |
3728 | struct packet_type *pt = &bond->arp_mon_pt; |
3729 | ||
3730 | dev_remove_pack(pt); | |
3731 | pt->type = 0; | |
f5b2b966 JV |
3732 | } |
3733 | ||
169a3e66 JV |
3734 | /*---------------------------- Hashing Policies -----------------------------*/ |
3735 | ||
6f6652be JV |
3736 | /* |
3737 | * Hash for the output device based upon layer 2 and layer 3 data. If | |
3738 | * the packet is not IP mimic bond_xmit_hash_policy_l2() | |
3739 | */ | |
a361c83c | 3740 | static int bond_xmit_hash_policy_l23(struct sk_buff *skb, int count) |
6f6652be JV |
3741 | { |
3742 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
3743 | struct iphdr *iph = ip_hdr(skb); | |
3744 | ||
f14c4e4e | 3745 | if (skb->protocol == htons(ETH_P_IP)) { |
6f6652be | 3746 | return ((ntohl(iph->saddr ^ iph->daddr) & 0xffff) ^ |
d3da6831 | 3747 | (data->h_dest[5] ^ data->h_source[5])) % count; |
6f6652be JV |
3748 | } |
3749 | ||
d3da6831 | 3750 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
6f6652be JV |
3751 | } |
3752 | ||
169a3e66 | 3753 | /* |
59c51591 | 3754 | * Hash for the output device based upon layer 3 and layer 4 data. If |
169a3e66 JV |
3755 | * the packet is a frag or not TCP or UDP, just use layer 3 data. If it is |
3756 | * altogether not IP, mimic bond_xmit_hash_policy_l2() | |
3757 | */ | |
a361c83c | 3758 | static int bond_xmit_hash_policy_l34(struct sk_buff *skb, int count) |
169a3e66 JV |
3759 | { |
3760 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
eddc9ec5 | 3761 | struct iphdr *iph = ip_hdr(skb); |
d3bb52b0 | 3762 | __be16 *layer4hdr = (__be16 *)((u32 *)iph + iph->ihl); |
169a3e66 JV |
3763 | int layer4_xor = 0; |
3764 | ||
f14c4e4e BH |
3765 | if (skb->protocol == htons(ETH_P_IP)) { |
3766 | if (!(iph->frag_off & htons(IP_MF|IP_OFFSET)) && | |
169a3e66 JV |
3767 | (iph->protocol == IPPROTO_TCP || |
3768 | iph->protocol == IPPROTO_UDP)) { | |
d3bb52b0 | 3769 | layer4_xor = ntohs((*layer4hdr ^ *(layer4hdr + 1))); |
169a3e66 JV |
3770 | } |
3771 | return (layer4_xor ^ | |
3772 | ((ntohl(iph->saddr ^ iph->daddr)) & 0xffff)) % count; | |
3773 | ||
3774 | } | |
3775 | ||
d3da6831 | 3776 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
169a3e66 JV |
3777 | } |
3778 | ||
3779 | /* | |
3780 | * Hash for the output device based upon layer 2 data | |
3781 | */ | |
a361c83c | 3782 | static int bond_xmit_hash_policy_l2(struct sk_buff *skb, int count) |
169a3e66 JV |
3783 | { |
3784 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
3785 | ||
d3da6831 | 3786 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
169a3e66 JV |
3787 | } |
3788 | ||
1da177e4 LT |
3789 | /*-------------------------- Device entry points ----------------------------*/ |
3790 | ||
3791 | static int bond_open(struct net_device *bond_dev) | |
3792 | { | |
454d7c9b | 3793 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3794 | |
3795 | bond->kill_timers = 0; | |
3796 | ||
5a37e8ca FL |
3797 | INIT_DELAYED_WORK(&bond->mcast_work, bond_resend_igmp_join_requests_delayed); |
3798 | ||
58402054 | 3799 | if (bond_is_lb(bond)) { |
1da177e4 LT |
3800 | /* bond_alb_initialize must be called before the timer |
3801 | * is started. | |
3802 | */ | |
3803 | if (bond_alb_initialize(bond, (bond->params.mode == BOND_MODE_ALB))) { | |
3804 | /* something went wrong - fail the open operation */ | |
b473946a | 3805 | return -ENOMEM; |
1da177e4 LT |
3806 | } |
3807 | ||
1b76b316 JV |
3808 | INIT_DELAYED_WORK(&bond->alb_work, bond_alb_monitor); |
3809 | queue_delayed_work(bond->wq, &bond->alb_work, 0); | |
1da177e4 LT |
3810 | } |
3811 | ||
3812 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ | |
1b76b316 JV |
3813 | INIT_DELAYED_WORK(&bond->mii_work, bond_mii_monitor); |
3814 | queue_delayed_work(bond->wq, &bond->mii_work, 0); | |
1da177e4 LT |
3815 | } |
3816 | ||
3817 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ | |
1b76b316 JV |
3818 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) |
3819 | INIT_DELAYED_WORK(&bond->arp_work, | |
3820 | bond_activebackup_arp_mon); | |
3821 | else | |
3822 | INIT_DELAYED_WORK(&bond->arp_work, | |
3823 | bond_loadbalance_arp_mon); | |
3824 | ||
3825 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
f5b2b966 JV |
3826 | if (bond->params.arp_validate) |
3827 | bond_register_arp(bond); | |
1da177e4 LT |
3828 | } |
3829 | ||
3830 | if (bond->params.mode == BOND_MODE_8023AD) { | |
a40745f5 | 3831 | INIT_DELAYED_WORK(&bond->ad_work, bond_3ad_state_machine_handler); |
1b76b316 | 3832 | queue_delayed_work(bond->wq, &bond->ad_work, 0); |
1da177e4 LT |
3833 | /* register to receive LACPDUs */ |
3834 | bond_register_lacpdu(bond); | |
fd989c83 | 3835 | bond_3ad_initiate_agg_selection(bond, 1); |
1da177e4 LT |
3836 | } |
3837 | ||
3838 | return 0; | |
3839 | } | |
3840 | ||
3841 | static int bond_close(struct net_device *bond_dev) | |
3842 | { | |
454d7c9b | 3843 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3844 | |
3845 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3846 | /* Unregister the receive of LACPDUs */ | |
3847 | bond_unregister_lacpdu(bond); | |
3848 | } | |
3849 | ||
f5b2b966 JV |
3850 | if (bond->params.arp_validate) |
3851 | bond_unregister_arp(bond); | |
3852 | ||
1da177e4 LT |
3853 | write_lock_bh(&bond->lock); |
3854 | ||
b59f9f74 | 3855 | bond->send_grat_arp = 0; |
305d552a | 3856 | bond->send_unsol_na = 0; |
1da177e4 LT |
3857 | |
3858 | /* signal timers not to re-arm */ | |
3859 | bond->kill_timers = 1; | |
3860 | ||
3861 | write_unlock_bh(&bond->lock); | |
3862 | ||
1da177e4 | 3863 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ |
1b76b316 | 3864 | cancel_delayed_work(&bond->mii_work); |
1da177e4 LT |
3865 | } |
3866 | ||
3867 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ | |
1b76b316 | 3868 | cancel_delayed_work(&bond->arp_work); |
1da177e4 LT |
3869 | } |
3870 | ||
3871 | switch (bond->params.mode) { | |
3872 | case BOND_MODE_8023AD: | |
1b76b316 | 3873 | cancel_delayed_work(&bond->ad_work); |
1da177e4 LT |
3874 | break; |
3875 | case BOND_MODE_TLB: | |
3876 | case BOND_MODE_ALB: | |
1b76b316 | 3877 | cancel_delayed_work(&bond->alb_work); |
1da177e4 LT |
3878 | break; |
3879 | default: | |
3880 | break; | |
3881 | } | |
3882 | ||
5a37e8ca FL |
3883 | if (delayed_work_pending(&bond->mcast_work)) |
3884 | cancel_delayed_work(&bond->mcast_work); | |
1da177e4 | 3885 | |
58402054 | 3886 | if (bond_is_lb(bond)) { |
1da177e4 LT |
3887 | /* Must be called only after all |
3888 | * slaves have been released | |
3889 | */ | |
3890 | bond_alb_deinitialize(bond); | |
3891 | } | |
3892 | ||
3893 | return 0; | |
3894 | } | |
3895 | ||
28172739 ED |
3896 | static struct rtnl_link_stats64 *bond_get_stats(struct net_device *bond_dev, |
3897 | struct rtnl_link_stats64 *stats) | |
1da177e4 | 3898 | { |
454d7c9b | 3899 | struct bonding *bond = netdev_priv(bond_dev); |
28172739 | 3900 | struct rtnl_link_stats64 temp; |
1da177e4 LT |
3901 | struct slave *slave; |
3902 | int i; | |
3903 | ||
28172739 | 3904 | memset(stats, 0, sizeof(*stats)); |
1da177e4 LT |
3905 | |
3906 | read_lock_bh(&bond->lock); | |
3907 | ||
3908 | bond_for_each_slave(bond, slave, i) { | |
be1f3c2c | 3909 | const struct rtnl_link_stats64 *sstats = |
28172739 ED |
3910 | dev_get_stats(slave->dev, &temp); |
3911 | ||
3912 | stats->rx_packets += sstats->rx_packets; | |
3913 | stats->rx_bytes += sstats->rx_bytes; | |
3914 | stats->rx_errors += sstats->rx_errors; | |
3915 | stats->rx_dropped += sstats->rx_dropped; | |
3916 | ||
3917 | stats->tx_packets += sstats->tx_packets; | |
3918 | stats->tx_bytes += sstats->tx_bytes; | |
3919 | stats->tx_errors += sstats->tx_errors; | |
3920 | stats->tx_dropped += sstats->tx_dropped; | |
3921 | ||
3922 | stats->multicast += sstats->multicast; | |
3923 | stats->collisions += sstats->collisions; | |
3924 | ||
3925 | stats->rx_length_errors += sstats->rx_length_errors; | |
3926 | stats->rx_over_errors += sstats->rx_over_errors; | |
3927 | stats->rx_crc_errors += sstats->rx_crc_errors; | |
3928 | stats->rx_frame_errors += sstats->rx_frame_errors; | |
3929 | stats->rx_fifo_errors += sstats->rx_fifo_errors; | |
3930 | stats->rx_missed_errors += sstats->rx_missed_errors; | |
3931 | ||
3932 | stats->tx_aborted_errors += sstats->tx_aborted_errors; | |
3933 | stats->tx_carrier_errors += sstats->tx_carrier_errors; | |
3934 | stats->tx_fifo_errors += sstats->tx_fifo_errors; | |
3935 | stats->tx_heartbeat_errors += sstats->tx_heartbeat_errors; | |
3936 | stats->tx_window_errors += sstats->tx_window_errors; | |
2439f9eb AG |
3937 | } |
3938 | ||
1da177e4 LT |
3939 | read_unlock_bh(&bond->lock); |
3940 | ||
3941 | return stats; | |
3942 | } | |
3943 | ||
3944 | static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd) | |
3945 | { | |
3946 | struct net_device *slave_dev = NULL; | |
3947 | struct ifbond k_binfo; | |
3948 | struct ifbond __user *u_binfo = NULL; | |
3949 | struct ifslave k_sinfo; | |
3950 | struct ifslave __user *u_sinfo = NULL; | |
3951 | struct mii_ioctl_data *mii = NULL; | |
1da177e4 LT |
3952 | int res = 0; |
3953 | ||
a4aee5c8 | 3954 | pr_debug("bond_ioctl: master=%s, cmd=%d\n", bond_dev->name, cmd); |
1da177e4 LT |
3955 | |
3956 | switch (cmd) { | |
1da177e4 LT |
3957 | case SIOCGMIIPHY: |
3958 | mii = if_mii(ifr); | |
3d632c3f | 3959 | if (!mii) |
1da177e4 | 3960 | return -EINVAL; |
3d632c3f | 3961 | |
1da177e4 LT |
3962 | mii->phy_id = 0; |
3963 | /* Fall Through */ | |
3964 | case SIOCGMIIREG: | |
3965 | /* | |
3966 | * We do this again just in case we were called by SIOCGMIIREG | |
3967 | * instead of SIOCGMIIPHY. | |
3968 | */ | |
3969 | mii = if_mii(ifr); | |
3d632c3f | 3970 | if (!mii) |
1da177e4 | 3971 | return -EINVAL; |
3d632c3f | 3972 | |
1da177e4 LT |
3973 | |
3974 | if (mii->reg_num == 1) { | |
454d7c9b | 3975 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 3976 | mii->val_out = 0; |
6603a6f2 | 3977 | read_lock(&bond->lock); |
1da177e4 | 3978 | read_lock(&bond->curr_slave_lock); |
3d632c3f | 3979 | if (netif_carrier_ok(bond->dev)) |
1da177e4 | 3980 | mii->val_out = BMSR_LSTATUS; |
3d632c3f | 3981 | |
1da177e4 | 3982 | read_unlock(&bond->curr_slave_lock); |
6603a6f2 | 3983 | read_unlock(&bond->lock); |
1da177e4 LT |
3984 | } |
3985 | ||
3986 | return 0; | |
3987 | case BOND_INFO_QUERY_OLD: | |
3988 | case SIOCBONDINFOQUERY: | |
3989 | u_binfo = (struct ifbond __user *)ifr->ifr_data; | |
3990 | ||
3d632c3f | 3991 | if (copy_from_user(&k_binfo, u_binfo, sizeof(ifbond))) |
1da177e4 | 3992 | return -EFAULT; |
1da177e4 LT |
3993 | |
3994 | res = bond_info_query(bond_dev, &k_binfo); | |
3d632c3f SH |
3995 | if (res == 0 && |
3996 | copy_to_user(u_binfo, &k_binfo, sizeof(ifbond))) | |
3997 | return -EFAULT; | |
1da177e4 LT |
3998 | |
3999 | return res; | |
4000 | case BOND_SLAVE_INFO_QUERY_OLD: | |
4001 | case SIOCBONDSLAVEINFOQUERY: | |
4002 | u_sinfo = (struct ifslave __user *)ifr->ifr_data; | |
4003 | ||
3d632c3f | 4004 | if (copy_from_user(&k_sinfo, u_sinfo, sizeof(ifslave))) |
1da177e4 | 4005 | return -EFAULT; |
1da177e4 LT |
4006 | |
4007 | res = bond_slave_info_query(bond_dev, &k_sinfo); | |
3d632c3f SH |
4008 | if (res == 0 && |
4009 | copy_to_user(u_sinfo, &k_sinfo, sizeof(ifslave))) | |
4010 | return -EFAULT; | |
1da177e4 LT |
4011 | |
4012 | return res; | |
4013 | default: | |
4014 | /* Go on */ | |
4015 | break; | |
4016 | } | |
4017 | ||
3d632c3f | 4018 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4019 | return -EPERM; |
1da177e4 | 4020 | |
ec87fd3b | 4021 | slave_dev = dev_get_by_name(dev_net(bond_dev), ifr->ifr_slave); |
1da177e4 | 4022 | |
a4aee5c8 | 4023 | pr_debug("slave_dev=%p:\n", slave_dev); |
1da177e4 | 4024 | |
3d632c3f | 4025 | if (!slave_dev) |
1da177e4 | 4026 | res = -ENODEV; |
3d632c3f | 4027 | else { |
a4aee5c8 | 4028 | pr_debug("slave_dev->name=%s:\n", slave_dev->name); |
1da177e4 LT |
4029 | switch (cmd) { |
4030 | case BOND_ENSLAVE_OLD: | |
4031 | case SIOCBONDENSLAVE: | |
4032 | res = bond_enslave(bond_dev, slave_dev); | |
4033 | break; | |
4034 | case BOND_RELEASE_OLD: | |
4035 | case SIOCBONDRELEASE: | |
4036 | res = bond_release(bond_dev, slave_dev); | |
4037 | break; | |
4038 | case BOND_SETHWADDR_OLD: | |
4039 | case SIOCBONDSETHWADDR: | |
4040 | res = bond_sethwaddr(bond_dev, slave_dev); | |
4041 | break; | |
4042 | case BOND_CHANGE_ACTIVE_OLD: | |
4043 | case SIOCBONDCHANGEACTIVE: | |
4044 | res = bond_ioctl_change_active(bond_dev, slave_dev); | |
4045 | break; | |
4046 | default: | |
4047 | res = -EOPNOTSUPP; | |
4048 | } | |
4049 | ||
4050 | dev_put(slave_dev); | |
4051 | } | |
4052 | ||
1da177e4 LT |
4053 | return res; |
4054 | } | |
4055 | ||
22bedad3 JP |
4056 | static bool bond_addr_in_mc_list(unsigned char *addr, |
4057 | struct netdev_hw_addr_list *list, | |
4058 | int addrlen) | |
4059 | { | |
4060 | struct netdev_hw_addr *ha; | |
4061 | ||
4062 | netdev_hw_addr_list_for_each(ha, list) | |
4063 | if (!memcmp(ha->addr, addr, addrlen)) | |
4064 | return true; | |
4065 | ||
4066 | return false; | |
4067 | } | |
4068 | ||
1da177e4 LT |
4069 | static void bond_set_multicast_list(struct net_device *bond_dev) |
4070 | { | |
454d7c9b | 4071 | struct bonding *bond = netdev_priv(bond_dev); |
22bedad3 JP |
4072 | struct netdev_hw_addr *ha; |
4073 | bool found; | |
1da177e4 | 4074 | |
1da177e4 LT |
4075 | /* |
4076 | * Do promisc before checking multicast_mode | |
4077 | */ | |
3d632c3f | 4078 | if ((bond_dev->flags & IFF_PROMISC) && !(bond->flags & IFF_PROMISC)) |
7e1a1ac1 WC |
4079 | /* |
4080 | * FIXME: Need to handle the error when one of the multi-slaves | |
4081 | * encounters error. | |
4082 | */ | |
1da177e4 | 4083 | bond_set_promiscuity(bond, 1); |
1da177e4 | 4084 | |
3d632c3f SH |
4085 | |
4086 | if (!(bond_dev->flags & IFF_PROMISC) && (bond->flags & IFF_PROMISC)) | |
1da177e4 | 4087 | bond_set_promiscuity(bond, -1); |
3d632c3f | 4088 | |
1da177e4 LT |
4089 | |
4090 | /* set allmulti flag to slaves */ | |
3d632c3f | 4091 | if ((bond_dev->flags & IFF_ALLMULTI) && !(bond->flags & IFF_ALLMULTI)) |
7e1a1ac1 WC |
4092 | /* |
4093 | * FIXME: Need to handle the error when one of the multi-slaves | |
4094 | * encounters error. | |
4095 | */ | |
1da177e4 | 4096 | bond_set_allmulti(bond, 1); |
1da177e4 | 4097 | |
3d632c3f SH |
4098 | |
4099 | if (!(bond_dev->flags & IFF_ALLMULTI) && (bond->flags & IFF_ALLMULTI)) | |
1da177e4 | 4100 | bond_set_allmulti(bond, -1); |
3d632c3f | 4101 | |
1da177e4 | 4102 | |
80ee5ad2 JV |
4103 | read_lock(&bond->lock); |
4104 | ||
1da177e4 LT |
4105 | bond->flags = bond_dev->flags; |
4106 | ||
4107 | /* looking for addresses to add to slaves' mc list */ | |
22bedad3 JP |
4108 | netdev_for_each_mc_addr(ha, bond_dev) { |
4109 | found = bond_addr_in_mc_list(ha->addr, &bond->mc_list, | |
4110 | bond_dev->addr_len); | |
4111 | if (!found) | |
4112 | bond_mc_add(bond, ha->addr); | |
1da177e4 LT |
4113 | } |
4114 | ||
4115 | /* looking for addresses to delete from slaves' list */ | |
22bedad3 JP |
4116 | netdev_hw_addr_list_for_each(ha, &bond->mc_list) { |
4117 | found = bond_addr_in_mc_list(ha->addr, &bond_dev->mc, | |
4118 | bond_dev->addr_len); | |
4119 | if (!found) | |
4120 | bond_mc_del(bond, ha->addr); | |
1da177e4 LT |
4121 | } |
4122 | ||
4123 | /* save master's multicast list */ | |
22bedad3 JP |
4124 | __hw_addr_flush(&bond->mc_list); |
4125 | __hw_addr_add_multiple(&bond->mc_list, &bond_dev->mc, | |
4126 | bond_dev->addr_len, NETDEV_HW_ADDR_T_MULTICAST); | |
1da177e4 | 4127 | |
80ee5ad2 | 4128 | read_unlock(&bond->lock); |
1da177e4 LT |
4129 | } |
4130 | ||
00829823 SH |
4131 | static int bond_neigh_setup(struct net_device *dev, struct neigh_parms *parms) |
4132 | { | |
4133 | struct bonding *bond = netdev_priv(dev); | |
4134 | struct slave *slave = bond->first_slave; | |
4135 | ||
4136 | if (slave) { | |
4137 | const struct net_device_ops *slave_ops | |
4138 | = slave->dev->netdev_ops; | |
4139 | if (slave_ops->ndo_neigh_setup) | |
72e2240f | 4140 | return slave_ops->ndo_neigh_setup(slave->dev, parms); |
00829823 SH |
4141 | } |
4142 | return 0; | |
4143 | } | |
4144 | ||
1da177e4 LT |
4145 | /* |
4146 | * Change the MTU of all of a master's slaves to match the master | |
4147 | */ | |
4148 | static int bond_change_mtu(struct net_device *bond_dev, int new_mtu) | |
4149 | { | |
454d7c9b | 4150 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4151 | struct slave *slave, *stop_at; |
4152 | int res = 0; | |
4153 | int i; | |
4154 | ||
5a03cdb7 | 4155 | pr_debug("bond=%p, name=%s, new_mtu=%d\n", bond, |
a4aee5c8 | 4156 | (bond_dev ? bond_dev->name : "None"), new_mtu); |
1da177e4 LT |
4157 | |
4158 | /* Can't hold bond->lock with bh disabled here since | |
4159 | * some base drivers panic. On the other hand we can't | |
4160 | * hold bond->lock without bh disabled because we'll | |
4161 | * deadlock. The only solution is to rely on the fact | |
4162 | * that we're under rtnl_lock here, and the slaves | |
4163 | * list won't change. This doesn't solve the problem | |
4164 | * of setting the slave's MTU while it is | |
4165 | * transmitting, but the assumption is that the base | |
4166 | * driver can handle that. | |
4167 | * | |
4168 | * TODO: figure out a way to safely iterate the slaves | |
4169 | * list, but without holding a lock around the actual | |
4170 | * call to the base driver. | |
4171 | */ | |
4172 | ||
4173 | bond_for_each_slave(bond, slave, i) { | |
a4aee5c8 JP |
4174 | pr_debug("s %p s->p %p c_m %p\n", |
4175 | slave, | |
4176 | slave->prev, | |
4177 | slave->dev->netdev_ops->ndo_change_mtu); | |
e944ef79 | 4178 | |
1da177e4 LT |
4179 | res = dev_set_mtu(slave->dev, new_mtu); |
4180 | ||
4181 | if (res) { | |
4182 | /* If we failed to set the slave's mtu to the new value | |
4183 | * we must abort the operation even in ACTIVE_BACKUP | |
4184 | * mode, because if we allow the backup slaves to have | |
4185 | * different mtu values than the active slave we'll | |
4186 | * need to change their mtu when doing a failover. That | |
4187 | * means changing their mtu from timer context, which | |
4188 | * is probably not a good idea. | |
4189 | */ | |
5a03cdb7 | 4190 | pr_debug("err %d %s\n", res, slave->dev->name); |
1da177e4 LT |
4191 | goto unwind; |
4192 | } | |
4193 | } | |
4194 | ||
4195 | bond_dev->mtu = new_mtu; | |
4196 | ||
4197 | return 0; | |
4198 | ||
4199 | unwind: | |
4200 | /* unwind from head to the slave that failed */ | |
4201 | stop_at = slave; | |
4202 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { | |
4203 | int tmp_res; | |
4204 | ||
4205 | tmp_res = dev_set_mtu(slave->dev, bond_dev->mtu); | |
4206 | if (tmp_res) { | |
a4aee5c8 JP |
4207 | pr_debug("unwind err %d dev %s\n", |
4208 | tmp_res, slave->dev->name); | |
1da177e4 LT |
4209 | } |
4210 | } | |
4211 | ||
4212 | return res; | |
4213 | } | |
4214 | ||
4215 | /* | |
4216 | * Change HW address | |
4217 | * | |
4218 | * Note that many devices must be down to change the HW address, and | |
4219 | * downing the master releases all slaves. We can make bonds full of | |
4220 | * bonding devices to test this, however. | |
4221 | */ | |
4222 | static int bond_set_mac_address(struct net_device *bond_dev, void *addr) | |
4223 | { | |
454d7c9b | 4224 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4225 | struct sockaddr *sa = addr, tmp_sa; |
4226 | struct slave *slave, *stop_at; | |
4227 | int res = 0; | |
4228 | int i; | |
4229 | ||
eb7cc59a SH |
4230 | if (bond->params.mode == BOND_MODE_ALB) |
4231 | return bond_alb_set_mac_address(bond_dev, addr); | |
4232 | ||
4233 | ||
a4aee5c8 JP |
4234 | pr_debug("bond=%p, name=%s\n", |
4235 | bond, bond_dev ? bond_dev->name : "None"); | |
1da177e4 | 4236 | |
dd957c57 | 4237 | /* |
3915c1e8 JV |
4238 | * If fail_over_mac is set to active, do nothing and return |
4239 | * success. Returning an error causes ifenslave to fail. | |
dd957c57 | 4240 | */ |
3915c1e8 | 4241 | if (bond->params.fail_over_mac == BOND_FOM_ACTIVE) |
dd957c57 | 4242 | return 0; |
2ab82852 | 4243 | |
3d632c3f | 4244 | if (!is_valid_ether_addr(sa->sa_data)) |
1da177e4 | 4245 | return -EADDRNOTAVAIL; |
1da177e4 LT |
4246 | |
4247 | /* Can't hold bond->lock with bh disabled here since | |
4248 | * some base drivers panic. On the other hand we can't | |
4249 | * hold bond->lock without bh disabled because we'll | |
4250 | * deadlock. The only solution is to rely on the fact | |
4251 | * that we're under rtnl_lock here, and the slaves | |
4252 | * list won't change. This doesn't solve the problem | |
4253 | * of setting the slave's hw address while it is | |
4254 | * transmitting, but the assumption is that the base | |
4255 | * driver can handle that. | |
4256 | * | |
4257 | * TODO: figure out a way to safely iterate the slaves | |
4258 | * list, but without holding a lock around the actual | |
4259 | * call to the base driver. | |
4260 | */ | |
4261 | ||
4262 | bond_for_each_slave(bond, slave, i) { | |
eb7cc59a | 4263 | const struct net_device_ops *slave_ops = slave->dev->netdev_ops; |
5a03cdb7 | 4264 | pr_debug("slave %p %s\n", slave, slave->dev->name); |
1da177e4 | 4265 | |
eb7cc59a | 4266 | if (slave_ops->ndo_set_mac_address == NULL) { |
1da177e4 | 4267 | res = -EOPNOTSUPP; |
5a03cdb7 | 4268 | pr_debug("EOPNOTSUPP %s\n", slave->dev->name); |
1da177e4 LT |
4269 | goto unwind; |
4270 | } | |
4271 | ||
4272 | res = dev_set_mac_address(slave->dev, addr); | |
4273 | if (res) { | |
4274 | /* TODO: consider downing the slave | |
4275 | * and retry ? | |
4276 | * User should expect communications | |
4277 | * breakage anyway until ARP finish | |
4278 | * updating, so... | |
4279 | */ | |
5a03cdb7 | 4280 | pr_debug("err %d %s\n", res, slave->dev->name); |
1da177e4 LT |
4281 | goto unwind; |
4282 | } | |
4283 | } | |
4284 | ||
4285 | /* success */ | |
4286 | memcpy(bond_dev->dev_addr, sa->sa_data, bond_dev->addr_len); | |
4287 | return 0; | |
4288 | ||
4289 | unwind: | |
4290 | memcpy(tmp_sa.sa_data, bond_dev->dev_addr, bond_dev->addr_len); | |
4291 | tmp_sa.sa_family = bond_dev->type; | |
4292 | ||
4293 | /* unwind from head to the slave that failed */ | |
4294 | stop_at = slave; | |
4295 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { | |
4296 | int tmp_res; | |
4297 | ||
4298 | tmp_res = dev_set_mac_address(slave->dev, &tmp_sa); | |
4299 | if (tmp_res) { | |
a4aee5c8 JP |
4300 | pr_debug("unwind err %d dev %s\n", |
4301 | tmp_res, slave->dev->name); | |
1da177e4 LT |
4302 | } |
4303 | } | |
4304 | ||
4305 | return res; | |
4306 | } | |
4307 | ||
4308 | static int bond_xmit_roundrobin(struct sk_buff *skb, struct net_device *bond_dev) | |
4309 | { | |
454d7c9b | 4310 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 4311 | struct slave *slave, *start_at; |
cf5f9044 | 4312 | int i, slave_no, res = 1; |
a2fd940f | 4313 | struct iphdr *iph = ip_hdr(skb); |
1da177e4 LT |
4314 | |
4315 | read_lock(&bond->lock); | |
4316 | ||
3d632c3f | 4317 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4318 | goto out; |
cf5f9044 | 4319 | /* |
a2fd940f AG |
4320 | * Start with the curr_active_slave that joined the bond as the |
4321 | * default for sending IGMP traffic. For failover purposes one | |
4322 | * needs to maintain some consistency for the interface that will | |
4323 | * send the join/membership reports. The curr_active_slave found | |
4324 | * will send all of this type of traffic. | |
cf5f9044 | 4325 | */ |
00ae7028 | 4326 | if ((iph->protocol == IPPROTO_IGMP) && |
a2fd940f | 4327 | (skb->protocol == htons(ETH_P_IP))) { |
1da177e4 | 4328 | |
a2fd940f AG |
4329 | read_lock(&bond->curr_slave_lock); |
4330 | slave = bond->curr_active_slave; | |
4331 | read_unlock(&bond->curr_slave_lock); | |
4332 | ||
4333 | if (!slave) | |
4334 | goto out; | |
4335 | } else { | |
4336 | /* | |
4337 | * Concurrent TX may collide on rr_tx_counter; we accept | |
4338 | * that as being rare enough not to justify using an | |
4339 | * atomic op here. | |
4340 | */ | |
4341 | slave_no = bond->rr_tx_counter++ % bond->slave_cnt; | |
4342 | ||
4343 | bond_for_each_slave(bond, slave, i) { | |
4344 | slave_no--; | |
4345 | if (slave_no < 0) | |
4346 | break; | |
4347 | } | |
1da177e4 LT |
4348 | } |
4349 | ||
cf5f9044 | 4350 | start_at = slave; |
1da177e4 LT |
4351 | bond_for_each_slave_from(bond, slave, i, start_at) { |
4352 | if (IS_UP(slave->dev) && | |
4353 | (slave->link == BOND_LINK_UP) && | |
4354 | (slave->state == BOND_STATE_ACTIVE)) { | |
4355 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
1da177e4 LT |
4356 | break; |
4357 | } | |
4358 | } | |
4359 | ||
1da177e4 LT |
4360 | out: |
4361 | if (res) { | |
4362 | /* no suitable interface, frame not sent */ | |
4363 | dev_kfree_skb(skb); | |
4364 | } | |
4365 | read_unlock(&bond->lock); | |
ec634fe3 | 4366 | return NETDEV_TX_OK; |
1da177e4 LT |
4367 | } |
4368 | ||
075897ce | 4369 | |
1da177e4 LT |
4370 | /* |
4371 | * in active-backup mode, we know that bond->curr_active_slave is always valid if | |
4372 | * the bond has a usable interface. | |
4373 | */ | |
4374 | static int bond_xmit_activebackup(struct sk_buff *skb, struct net_device *bond_dev) | |
4375 | { | |
454d7c9b | 4376 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4377 | int res = 1; |
4378 | ||
1da177e4 LT |
4379 | read_lock(&bond->lock); |
4380 | read_lock(&bond->curr_slave_lock); | |
4381 | ||
3d632c3f | 4382 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4383 | goto out; |
1da177e4 | 4384 | |
075897ce JL |
4385 | if (!bond->curr_active_slave) |
4386 | goto out; | |
4387 | ||
075897ce JL |
4388 | res = bond_dev_queue_xmit(bond, skb, bond->curr_active_slave->dev); |
4389 | ||
1da177e4 | 4390 | out: |
3d632c3f | 4391 | if (res) |
1da177e4 LT |
4392 | /* no suitable interface, frame not sent */ |
4393 | dev_kfree_skb(skb); | |
3d632c3f | 4394 | |
1da177e4 LT |
4395 | read_unlock(&bond->curr_slave_lock); |
4396 | read_unlock(&bond->lock); | |
ec634fe3 | 4397 | return NETDEV_TX_OK; |
1da177e4 LT |
4398 | } |
4399 | ||
4400 | /* | |
169a3e66 JV |
4401 | * In bond_xmit_xor() , we determine the output device by using a pre- |
4402 | * determined xmit_hash_policy(), If the selected device is not enabled, | |
4403 | * find the next active slave. | |
1da177e4 LT |
4404 | */ |
4405 | static int bond_xmit_xor(struct sk_buff *skb, struct net_device *bond_dev) | |
4406 | { | |
454d7c9b | 4407 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4408 | struct slave *slave, *start_at; |
4409 | int slave_no; | |
4410 | int i; | |
4411 | int res = 1; | |
4412 | ||
4413 | read_lock(&bond->lock); | |
4414 | ||
3d632c3f | 4415 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4416 | goto out; |
1da177e4 | 4417 | |
a361c83c | 4418 | slave_no = bond->xmit_hash_policy(skb, bond->slave_cnt); |
1da177e4 LT |
4419 | |
4420 | bond_for_each_slave(bond, slave, i) { | |
4421 | slave_no--; | |
3d632c3f | 4422 | if (slave_no < 0) |
1da177e4 | 4423 | break; |
1da177e4 LT |
4424 | } |
4425 | ||
4426 | start_at = slave; | |
4427 | ||
4428 | bond_for_each_slave_from(bond, slave, i, start_at) { | |
4429 | if (IS_UP(slave->dev) && | |
4430 | (slave->link == BOND_LINK_UP) && | |
4431 | (slave->state == BOND_STATE_ACTIVE)) { | |
4432 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
4433 | break; | |
4434 | } | |
4435 | } | |
4436 | ||
4437 | out: | |
4438 | if (res) { | |
4439 | /* no suitable interface, frame not sent */ | |
4440 | dev_kfree_skb(skb); | |
4441 | } | |
4442 | read_unlock(&bond->lock); | |
ec634fe3 | 4443 | return NETDEV_TX_OK; |
1da177e4 LT |
4444 | } |
4445 | ||
4446 | /* | |
4447 | * in broadcast mode, we send everything to all usable interfaces. | |
4448 | */ | |
4449 | static int bond_xmit_broadcast(struct sk_buff *skb, struct net_device *bond_dev) | |
4450 | { | |
454d7c9b | 4451 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4452 | struct slave *slave, *start_at; |
4453 | struct net_device *tx_dev = NULL; | |
4454 | int i; | |
4455 | int res = 1; | |
4456 | ||
4457 | read_lock(&bond->lock); | |
4458 | ||
3d632c3f | 4459 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4460 | goto out; |
1da177e4 LT |
4461 | |
4462 | read_lock(&bond->curr_slave_lock); | |
4463 | start_at = bond->curr_active_slave; | |
4464 | read_unlock(&bond->curr_slave_lock); | |
4465 | ||
3d632c3f | 4466 | if (!start_at) |
1da177e4 | 4467 | goto out; |
1da177e4 LT |
4468 | |
4469 | bond_for_each_slave_from(bond, slave, i, start_at) { | |
4470 | if (IS_UP(slave->dev) && | |
4471 | (slave->link == BOND_LINK_UP) && | |
4472 | (slave->state == BOND_STATE_ACTIVE)) { | |
4473 | if (tx_dev) { | |
4474 | struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC); | |
4475 | if (!skb2) { | |
a4aee5c8 | 4476 | pr_err("%s: Error: bond_xmit_broadcast(): skb_clone() failed\n", |
4e0952c7 | 4477 | bond_dev->name); |
1da177e4 LT |
4478 | continue; |
4479 | } | |
4480 | ||
4481 | res = bond_dev_queue_xmit(bond, skb2, tx_dev); | |
4482 | if (res) { | |
4483 | dev_kfree_skb(skb2); | |
4484 | continue; | |
4485 | } | |
4486 | } | |
4487 | tx_dev = slave->dev; | |
4488 | } | |
4489 | } | |
4490 | ||
3d632c3f | 4491 | if (tx_dev) |
1da177e4 | 4492 | res = bond_dev_queue_xmit(bond, skb, tx_dev); |
1da177e4 LT |
4493 | |
4494 | out: | |
3d632c3f | 4495 | if (res) |
1da177e4 LT |
4496 | /* no suitable interface, frame not sent */ |
4497 | dev_kfree_skb(skb); | |
3d632c3f | 4498 | |
1da177e4 LT |
4499 | /* frame sent to all suitable interfaces */ |
4500 | read_unlock(&bond->lock); | |
ec634fe3 | 4501 | return NETDEV_TX_OK; |
1da177e4 LT |
4502 | } |
4503 | ||
4504 | /*------------------------- Device initialization ---------------------------*/ | |
4505 | ||
6f6652be JV |
4506 | static void bond_set_xmit_hash_policy(struct bonding *bond) |
4507 | { | |
4508 | switch (bond->params.xmit_policy) { | |
4509 | case BOND_XMIT_POLICY_LAYER23: | |
4510 | bond->xmit_hash_policy = bond_xmit_hash_policy_l23; | |
4511 | break; | |
4512 | case BOND_XMIT_POLICY_LAYER34: | |
4513 | bond->xmit_hash_policy = bond_xmit_hash_policy_l34; | |
4514 | break; | |
4515 | case BOND_XMIT_POLICY_LAYER2: | |
4516 | default: | |
4517 | bond->xmit_hash_policy = bond_xmit_hash_policy_l2; | |
4518 | break; | |
4519 | } | |
4520 | } | |
4521 | ||
bb1d9123 AG |
4522 | /* |
4523 | * Lookup the slave that corresponds to a qid | |
4524 | */ | |
4525 | static inline int bond_slave_override(struct bonding *bond, | |
4526 | struct sk_buff *skb) | |
4527 | { | |
4528 | int i, res = 1; | |
4529 | struct slave *slave = NULL; | |
4530 | struct slave *check_slave; | |
4531 | ||
4532 | read_lock(&bond->lock); | |
4533 | ||
4534 | if (!BOND_IS_OK(bond) || !skb->queue_mapping) | |
4535 | goto out; | |
4536 | ||
4537 | /* Find out if any slaves have the same mapping as this skb. */ | |
4538 | bond_for_each_slave(bond, check_slave, i) { | |
4539 | if (check_slave->queue_id == skb->queue_mapping) { | |
4540 | slave = check_slave; | |
4541 | break; | |
4542 | } | |
4543 | } | |
4544 | ||
4545 | /* If the slave isn't UP, use default transmit policy. */ | |
4546 | if (slave && slave->queue_id && IS_UP(slave->dev) && | |
4547 | (slave->link == BOND_LINK_UP)) { | |
4548 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
4549 | } | |
4550 | ||
4551 | out: | |
4552 | read_unlock(&bond->lock); | |
4553 | return res; | |
4554 | } | |
4555 | ||
4556 | static u16 bond_select_queue(struct net_device *dev, struct sk_buff *skb) | |
4557 | { | |
4558 | /* | |
4559 | * This helper function exists to help dev_pick_tx get the correct | |
4560 | * destination queue. Using a helper function skips the a call to | |
4561 | * skb_tx_hash and will put the skbs in the queue we expect on their | |
4562 | * way down to the bonding driver. | |
4563 | */ | |
4564 | return skb->queue_mapping; | |
4565 | } | |
4566 | ||
424efe9c | 4567 | static netdev_tx_t bond_start_xmit(struct sk_buff *skb, struct net_device *dev) |
00829823 | 4568 | { |
bb1d9123 AG |
4569 | struct bonding *bond = netdev_priv(dev); |
4570 | ||
e843fa50 NH |
4571 | /* |
4572 | * If we risk deadlock from transmitting this in the | |
4573 | * netpoll path, tell netpoll to queue the frame for later tx | |
4574 | */ | |
4575 | if (is_netpoll_tx_blocked(dev)) | |
4576 | return NETDEV_TX_BUSY; | |
4577 | ||
bb1d9123 AG |
4578 | if (TX_QUEUE_OVERRIDE(bond->params.mode)) { |
4579 | if (!bond_slave_override(bond, skb)) | |
4580 | return NETDEV_TX_OK; | |
4581 | } | |
00829823 SH |
4582 | |
4583 | switch (bond->params.mode) { | |
4584 | case BOND_MODE_ROUNDROBIN: | |
4585 | return bond_xmit_roundrobin(skb, dev); | |
4586 | case BOND_MODE_ACTIVEBACKUP: | |
4587 | return bond_xmit_activebackup(skb, dev); | |
4588 | case BOND_MODE_XOR: | |
4589 | return bond_xmit_xor(skb, dev); | |
4590 | case BOND_MODE_BROADCAST: | |
4591 | return bond_xmit_broadcast(skb, dev); | |
4592 | case BOND_MODE_8023AD: | |
4593 | return bond_3ad_xmit_xor(skb, dev); | |
4594 | case BOND_MODE_ALB: | |
4595 | case BOND_MODE_TLB: | |
4596 | return bond_alb_xmit(skb, dev); | |
4597 | default: | |
4598 | /* Should never happen, mode already checked */ | |
a4aee5c8 JP |
4599 | pr_err("%s: Error: Unknown bonding mode %d\n", |
4600 | dev->name, bond->params.mode); | |
00829823 SH |
4601 | WARN_ON_ONCE(1); |
4602 | dev_kfree_skb(skb); | |
4603 | return NETDEV_TX_OK; | |
4604 | } | |
4605 | } | |
4606 | ||
4607 | ||
1da177e4 LT |
4608 | /* |
4609 | * set bond mode specific net device operations | |
4610 | */ | |
a77b5325 | 4611 | void bond_set_mode_ops(struct bonding *bond, int mode) |
1da177e4 | 4612 | { |
169a3e66 JV |
4613 | struct net_device *bond_dev = bond->dev; |
4614 | ||
1da177e4 LT |
4615 | switch (mode) { |
4616 | case BOND_MODE_ROUNDROBIN: | |
1da177e4 LT |
4617 | break; |
4618 | case BOND_MODE_ACTIVEBACKUP: | |
1da177e4 LT |
4619 | break; |
4620 | case BOND_MODE_XOR: | |
6f6652be | 4621 | bond_set_xmit_hash_policy(bond); |
1da177e4 LT |
4622 | break; |
4623 | case BOND_MODE_BROADCAST: | |
1da177e4 LT |
4624 | break; |
4625 | case BOND_MODE_8023AD: | |
8f903c70 | 4626 | bond_set_master_3ad_flags(bond); |
6f6652be | 4627 | bond_set_xmit_hash_policy(bond); |
1da177e4 | 4628 | break; |
1da177e4 | 4629 | case BOND_MODE_ALB: |
8f903c70 JV |
4630 | bond_set_master_alb_flags(bond); |
4631 | /* FALLTHRU */ | |
4632 | case BOND_MODE_TLB: | |
1da177e4 LT |
4633 | break; |
4634 | default: | |
4635 | /* Should never happen, mode already checked */ | |
a4aee5c8 JP |
4636 | pr_err("%s: Error: Unknown bonding mode %d\n", |
4637 | bond_dev->name, mode); | |
1da177e4 LT |
4638 | break; |
4639 | } | |
4640 | } | |
4641 | ||
217df670 JV |
4642 | static void bond_ethtool_get_drvinfo(struct net_device *bond_dev, |
4643 | struct ethtool_drvinfo *drvinfo) | |
4644 | { | |
4645 | strncpy(drvinfo->driver, DRV_NAME, 32); | |
4646 | strncpy(drvinfo->version, DRV_VERSION, 32); | |
4647 | snprintf(drvinfo->fw_version, 32, "%d", BOND_ABI_VERSION); | |
4648 | } | |
4649 | ||
7282d491 | 4650 | static const struct ethtool_ops bond_ethtool_ops = { |
217df670 | 4651 | .get_drvinfo = bond_ethtool_get_drvinfo, |
fa53ebac SH |
4652 | .get_link = ethtool_op_get_link, |
4653 | .get_tx_csum = ethtool_op_get_tx_csum, | |
4654 | .get_sg = ethtool_op_get_sg, | |
4655 | .get_tso = ethtool_op_get_tso, | |
4656 | .get_ufo = ethtool_op_get_ufo, | |
4657 | .get_flags = ethtool_op_get_flags, | |
8531c5ff AK |
4658 | }; |
4659 | ||
eb7cc59a | 4660 | static const struct net_device_ops bond_netdev_ops = { |
181470fc | 4661 | .ndo_init = bond_init, |
9e71626c | 4662 | .ndo_uninit = bond_uninit, |
eb7cc59a SH |
4663 | .ndo_open = bond_open, |
4664 | .ndo_stop = bond_close, | |
00829823 | 4665 | .ndo_start_xmit = bond_start_xmit, |
bb1d9123 | 4666 | .ndo_select_queue = bond_select_queue, |
be1f3c2c | 4667 | .ndo_get_stats64 = bond_get_stats, |
eb7cc59a SH |
4668 | .ndo_do_ioctl = bond_do_ioctl, |
4669 | .ndo_set_multicast_list = bond_set_multicast_list, | |
4670 | .ndo_change_mtu = bond_change_mtu, | |
eb7cc59a | 4671 | .ndo_set_mac_address = bond_set_mac_address, |
00829823 | 4672 | .ndo_neigh_setup = bond_neigh_setup, |
eb7cc59a SH |
4673 | .ndo_vlan_rx_register = bond_vlan_rx_register, |
4674 | .ndo_vlan_rx_add_vid = bond_vlan_rx_add_vid, | |
4675 | .ndo_vlan_rx_kill_vid = bond_vlan_rx_kill_vid, | |
f6dc31a8 WC |
4676 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4677 | .ndo_netpoll_cleanup = bond_netpoll_cleanup, | |
4678 | .ndo_poll_controller = bond_poll_controller, | |
4679 | #endif | |
eb7cc59a SH |
4680 | }; |
4681 | ||
9e2e61fb AW |
4682 | static void bond_destructor(struct net_device *bond_dev) |
4683 | { | |
4684 | struct bonding *bond = netdev_priv(bond_dev); | |
4685 | if (bond->wq) | |
4686 | destroy_workqueue(bond->wq); | |
4687 | free_netdev(bond_dev); | |
4688 | } | |
4689 | ||
181470fc | 4690 | static void bond_setup(struct net_device *bond_dev) |
1da177e4 | 4691 | { |
454d7c9b | 4692 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 4693 | |
1da177e4 LT |
4694 | /* initialize rwlocks */ |
4695 | rwlock_init(&bond->lock); | |
4696 | rwlock_init(&bond->curr_slave_lock); | |
4697 | ||
d2991f75 | 4698 | bond->params = bonding_defaults; |
1da177e4 LT |
4699 | |
4700 | /* Initialize pointers */ | |
1da177e4 LT |
4701 | bond->dev = bond_dev; |
4702 | INIT_LIST_HEAD(&bond->vlan_list); | |
4703 | ||
4704 | /* Initialize the device entry points */ | |
181470fc | 4705 | ether_setup(bond_dev); |
eb7cc59a | 4706 | bond_dev->netdev_ops = &bond_netdev_ops; |
8531c5ff | 4707 | bond_dev->ethtool_ops = &bond_ethtool_ops; |
169a3e66 | 4708 | bond_set_mode_ops(bond, bond->params.mode); |
1da177e4 | 4709 | |
9e2e61fb | 4710 | bond_dev->destructor = bond_destructor; |
1da177e4 LT |
4711 | |
4712 | /* Initialize the device options */ | |
4713 | bond_dev->tx_queue_len = 0; | |
4714 | bond_dev->flags |= IFF_MASTER|IFF_MULTICAST; | |
0b680e75 | 4715 | bond_dev->priv_flags |= IFF_BONDING; |
181470fc SH |
4716 | bond_dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; |
4717 | ||
6cf3f41e JV |
4718 | if (bond->params.arp_interval) |
4719 | bond_dev->priv_flags |= IFF_MASTER_ARPMON; | |
1da177e4 LT |
4720 | |
4721 | /* At first, we block adding VLANs. That's the only way to | |
4722 | * prevent problems that occur when adding VLANs over an | |
4723 | * empty bond. The block will be removed once non-challenged | |
4724 | * slaves are enslaved. | |
4725 | */ | |
4726 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; | |
4727 | ||
932ff279 | 4728 | /* don't acquire bond device's netif_tx_lock when |
1da177e4 LT |
4729 | * transmitting */ |
4730 | bond_dev->features |= NETIF_F_LLTX; | |
4731 | ||
4732 | /* By default, we declare the bond to be fully | |
4733 | * VLAN hardware accelerated capable. Special | |
4734 | * care is taken in the various xmit functions | |
4735 | * when there are slaves that are not hw accel | |
4736 | * capable | |
4737 | */ | |
1da177e4 LT |
4738 | bond_dev->features |= (NETIF_F_HW_VLAN_TX | |
4739 | NETIF_F_HW_VLAN_RX | | |
4740 | NETIF_F_HW_VLAN_FILTER); | |
4741 | ||
e6599c2e ED |
4742 | /* By default, we enable GRO on bonding devices. |
4743 | * Actual support requires lowlevel drivers are GRO ready. | |
4744 | */ | |
4745 | bond_dev->features |= NETIF_F_GRO; | |
1da177e4 LT |
4746 | } |
4747 | ||
fdaea7a9 JV |
4748 | static void bond_work_cancel_all(struct bonding *bond) |
4749 | { | |
4750 | write_lock_bh(&bond->lock); | |
4751 | bond->kill_timers = 1; | |
4752 | write_unlock_bh(&bond->lock); | |
4753 | ||
4754 | if (bond->params.miimon && delayed_work_pending(&bond->mii_work)) | |
4755 | cancel_delayed_work(&bond->mii_work); | |
4756 | ||
4757 | if (bond->params.arp_interval && delayed_work_pending(&bond->arp_work)) | |
4758 | cancel_delayed_work(&bond->arp_work); | |
4759 | ||
4760 | if (bond->params.mode == BOND_MODE_ALB && | |
4761 | delayed_work_pending(&bond->alb_work)) | |
4762 | cancel_delayed_work(&bond->alb_work); | |
4763 | ||
4764 | if (bond->params.mode == BOND_MODE_8023AD && | |
4765 | delayed_work_pending(&bond->ad_work)) | |
4766 | cancel_delayed_work(&bond->ad_work); | |
5a37e8ca FL |
4767 | |
4768 | if (delayed_work_pending(&bond->mcast_work)) | |
4769 | cancel_delayed_work(&bond->mcast_work); | |
fdaea7a9 JV |
4770 | } |
4771 | ||
c67dfb29 EB |
4772 | /* |
4773 | * Destroy a bonding device. | |
4774 | * Must be under rtnl_lock when this function is called. | |
4775 | */ | |
4776 | static void bond_uninit(struct net_device *bond_dev) | |
a434e43f | 4777 | { |
454d7c9b | 4778 | struct bonding *bond = netdev_priv(bond_dev); |
f35188fa | 4779 | struct vlan_entry *vlan, *tmp; |
a434e43f | 4780 | |
f6dc31a8 WC |
4781 | bond_netpoll_cleanup(bond_dev); |
4782 | ||
c67dfb29 EB |
4783 | /* Release the bonded slaves */ |
4784 | bond_release_all(bond_dev); | |
4785 | ||
a434e43f JV |
4786 | list_del(&bond->bond_list); |
4787 | ||
4788 | bond_work_cancel_all(bond); | |
4789 | ||
a434e43f | 4790 | bond_remove_proc_entry(bond); |
c67dfb29 | 4791 | |
22bedad3 | 4792 | __hw_addr_flush(&bond->mc_list); |
f35188fa JV |
4793 | |
4794 | list_for_each_entry_safe(vlan, tmp, &bond->vlan_list, vlan_list) { | |
4795 | list_del(&vlan->vlan_list); | |
4796 | kfree(vlan); | |
4797 | } | |
a434e43f JV |
4798 | } |
4799 | ||
1da177e4 LT |
4800 | /*------------------------- Module initialization ---------------------------*/ |
4801 | ||
4802 | /* | |
4803 | * Convert string input module parms. Accept either the | |
ece95f7f JV |
4804 | * number of the mode or its string name. A bit complicated because |
4805 | * some mode names are substrings of other names, and calls from sysfs | |
4806 | * may have whitespace in the name (trailing newlines, for example). | |
1da177e4 | 4807 | */ |
325dcf7a | 4808 | int bond_parse_parm(const char *buf, const struct bond_parm_tbl *tbl) |
1da177e4 | 4809 | { |
54b87323 | 4810 | int modeint = -1, i, rv; |
a42e534f | 4811 | char *p, modestr[BOND_MAX_MODENAME_LEN + 1] = { 0, }; |
ece95f7f | 4812 | |
a42e534f JV |
4813 | for (p = (char *)buf; *p; p++) |
4814 | if (!(isdigit(*p) || isspace(*p))) | |
4815 | break; | |
4816 | ||
4817 | if (*p) | |
ece95f7f | 4818 | rv = sscanf(buf, "%20s", modestr); |
a42e534f | 4819 | else |
54b87323 | 4820 | rv = sscanf(buf, "%d", &modeint); |
a42e534f JV |
4821 | |
4822 | if (!rv) | |
4823 | return -1; | |
1da177e4 LT |
4824 | |
4825 | for (i = 0; tbl[i].modename; i++) { | |
54b87323 | 4826 | if (modeint == tbl[i].mode) |
ece95f7f JV |
4827 | return tbl[i].mode; |
4828 | if (strcmp(modestr, tbl[i].modename) == 0) | |
1da177e4 | 4829 | return tbl[i].mode; |
1da177e4 LT |
4830 | } |
4831 | ||
4832 | return -1; | |
4833 | } | |
4834 | ||
4835 | static int bond_check_params(struct bond_params *params) | |
4836 | { | |
a549952a | 4837 | int arp_validate_value, fail_over_mac_value, primary_reselect_value; |
f5b2b966 | 4838 | |
1da177e4 LT |
4839 | /* |
4840 | * Convert string parameters. | |
4841 | */ | |
4842 | if (mode) { | |
4843 | bond_mode = bond_parse_parm(mode, bond_mode_tbl); | |
4844 | if (bond_mode == -1) { | |
a4aee5c8 | 4845 | pr_err("Error: Invalid bonding mode \"%s\"\n", |
1da177e4 LT |
4846 | mode == NULL ? "NULL" : mode); |
4847 | return -EINVAL; | |
4848 | } | |
4849 | } | |
4850 | ||
169a3e66 JV |
4851 | if (xmit_hash_policy) { |
4852 | if ((bond_mode != BOND_MODE_XOR) && | |
4853 | (bond_mode != BOND_MODE_8023AD)) { | |
a4aee5c8 | 4854 | pr_info("xmit_hash_policy param is irrelevant in mode %s\n", |
169a3e66 JV |
4855 | bond_mode_name(bond_mode)); |
4856 | } else { | |
4857 | xmit_hashtype = bond_parse_parm(xmit_hash_policy, | |
4858 | xmit_hashtype_tbl); | |
4859 | if (xmit_hashtype == -1) { | |
a4aee5c8 | 4860 | pr_err("Error: Invalid xmit_hash_policy \"%s\"\n", |
3d632c3f | 4861 | xmit_hash_policy == NULL ? "NULL" : |
169a3e66 JV |
4862 | xmit_hash_policy); |
4863 | return -EINVAL; | |
4864 | } | |
4865 | } | |
4866 | } | |
4867 | ||
1da177e4 LT |
4868 | if (lacp_rate) { |
4869 | if (bond_mode != BOND_MODE_8023AD) { | |
a4aee5c8 JP |
4870 | pr_info("lacp_rate param is irrelevant in mode %s\n", |
4871 | bond_mode_name(bond_mode)); | |
1da177e4 LT |
4872 | } else { |
4873 | lacp_fast = bond_parse_parm(lacp_rate, bond_lacp_tbl); | |
4874 | if (lacp_fast == -1) { | |
a4aee5c8 | 4875 | pr_err("Error: Invalid lacp rate \"%s\"\n", |
1da177e4 LT |
4876 | lacp_rate == NULL ? "NULL" : lacp_rate); |
4877 | return -EINVAL; | |
4878 | } | |
4879 | } | |
4880 | } | |
4881 | ||
fd989c83 JV |
4882 | if (ad_select) { |
4883 | params->ad_select = bond_parse_parm(ad_select, ad_select_tbl); | |
4884 | if (params->ad_select == -1) { | |
a4aee5c8 | 4885 | pr_err("Error: Invalid ad_select \"%s\"\n", |
fd989c83 JV |
4886 | ad_select == NULL ? "NULL" : ad_select); |
4887 | return -EINVAL; | |
4888 | } | |
4889 | ||
4890 | if (bond_mode != BOND_MODE_8023AD) { | |
a4aee5c8 | 4891 | pr_warning("ad_select param only affects 802.3ad mode\n"); |
fd989c83 JV |
4892 | } |
4893 | } else { | |
4894 | params->ad_select = BOND_AD_STABLE; | |
4895 | } | |
4896 | ||
f5841306 | 4897 | if (max_bonds < 0) { |
a4aee5c8 JP |
4898 | pr_warning("Warning: max_bonds (%d) not in range %d-%d, so it was reset to BOND_DEFAULT_MAX_BONDS (%d)\n", |
4899 | max_bonds, 0, INT_MAX, BOND_DEFAULT_MAX_BONDS); | |
1da177e4 LT |
4900 | max_bonds = BOND_DEFAULT_MAX_BONDS; |
4901 | } | |
4902 | ||
4903 | if (miimon < 0) { | |
a4aee5c8 JP |
4904 | pr_warning("Warning: miimon module parameter (%d), not in range 0-%d, so it was reset to %d\n", |
4905 | miimon, INT_MAX, BOND_LINK_MON_INTERV); | |
1da177e4 LT |
4906 | miimon = BOND_LINK_MON_INTERV; |
4907 | } | |
4908 | ||
4909 | if (updelay < 0) { | |
a4aee5c8 JP |
4910 | pr_warning("Warning: updelay module parameter (%d), not in range 0-%d, so it was reset to 0\n", |
4911 | updelay, INT_MAX); | |
1da177e4 LT |
4912 | updelay = 0; |
4913 | } | |
4914 | ||
4915 | if (downdelay < 0) { | |
a4aee5c8 JP |
4916 | pr_warning("Warning: downdelay module parameter (%d), not in range 0-%d, so it was reset to 0\n", |
4917 | downdelay, INT_MAX); | |
1da177e4 LT |
4918 | downdelay = 0; |
4919 | } | |
4920 | ||
4921 | if ((use_carrier != 0) && (use_carrier != 1)) { | |
a4aee5c8 JP |
4922 | pr_warning("Warning: use_carrier module parameter (%d), not of valid value (0/1), so it was set to 1\n", |
4923 | use_carrier); | |
1da177e4 LT |
4924 | use_carrier = 1; |
4925 | } | |
4926 | ||
7893b249 | 4927 | if (num_grat_arp < 0 || num_grat_arp > 255) { |
2381a55c | 4928 | pr_warning("Warning: num_grat_arp (%d) not in range 0-255 so it was reset to 1\n", |
a4aee5c8 | 4929 | num_grat_arp); |
7893b249 MS |
4930 | num_grat_arp = 1; |
4931 | } | |
4932 | ||
305d552a | 4933 | if (num_unsol_na < 0 || num_unsol_na > 255) { |
2381a55c | 4934 | pr_warning("Warning: num_unsol_na (%d) not in range 0-255 so it was reset to 1\n", |
a4aee5c8 | 4935 | num_unsol_na); |
305d552a BH |
4936 | num_unsol_na = 1; |
4937 | } | |
4938 | ||
1da177e4 LT |
4939 | /* reset values for 802.3ad */ |
4940 | if (bond_mode == BOND_MODE_8023AD) { | |
4941 | if (!miimon) { | |
a4aee5c8 | 4942 | 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 | 4943 | pr_warning("Forcing miimon to 100msec\n"); |
1da177e4 LT |
4944 | miimon = 100; |
4945 | } | |
4946 | } | |
4947 | ||
bb1d9123 AG |
4948 | if (tx_queues < 1 || tx_queues > 255) { |
4949 | pr_warning("Warning: tx_queues (%d) should be between " | |
4950 | "1 and 255, resetting to %d\n", | |
4951 | tx_queues, BOND_DEFAULT_TX_QUEUES); | |
4952 | tx_queues = BOND_DEFAULT_TX_QUEUES; | |
4953 | } | |
4954 | ||
ebd8e497 AG |
4955 | if ((all_slaves_active != 0) && (all_slaves_active != 1)) { |
4956 | pr_warning("Warning: all_slaves_active module parameter (%d), " | |
4957 | "not of valid value (0/1), so it was set to " | |
4958 | "0\n", all_slaves_active); | |
4959 | all_slaves_active = 0; | |
4960 | } | |
4961 | ||
c2952c31 FL |
4962 | if (resend_igmp < 0 || resend_igmp > 255) { |
4963 | pr_warning("Warning: resend_igmp (%d) should be between " | |
4964 | "0 and 255, resetting to %d\n", | |
4965 | resend_igmp, BOND_DEFAULT_RESEND_IGMP); | |
4966 | resend_igmp = BOND_DEFAULT_RESEND_IGMP; | |
4967 | } | |
4968 | ||
1da177e4 LT |
4969 | /* reset values for TLB/ALB */ |
4970 | if ((bond_mode == BOND_MODE_TLB) || | |
4971 | (bond_mode == BOND_MODE_ALB)) { | |
4972 | if (!miimon) { | |
a4aee5c8 | 4973 | 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 | 4974 | pr_warning("Forcing miimon to 100msec\n"); |
1da177e4 LT |
4975 | miimon = 100; |
4976 | } | |
4977 | } | |
4978 | ||
4979 | if (bond_mode == BOND_MODE_ALB) { | |
a4aee5c8 JP |
4980 | 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", |
4981 | updelay); | |
1da177e4 LT |
4982 | } |
4983 | ||
4984 | if (!miimon) { | |
4985 | if (updelay || downdelay) { | |
4986 | /* just warn the user the up/down delay will have | |
4987 | * no effect since miimon is zero... | |
4988 | */ | |
a4aee5c8 JP |
4989 | 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", |
4990 | updelay, downdelay); | |
1da177e4 LT |
4991 | } |
4992 | } else { | |
4993 | /* don't allow arp monitoring */ | |
4994 | if (arp_interval) { | |
a4aee5c8 JP |
4995 | pr_warning("Warning: miimon (%d) and arp_interval (%d) can't be used simultaneously, disabling ARP monitoring\n", |
4996 | miimon, arp_interval); | |
1da177e4 LT |
4997 | arp_interval = 0; |
4998 | } | |
4999 | ||
5000 | if ((updelay % miimon) != 0) { | |
a4aee5c8 JP |
5001 | pr_warning("Warning: updelay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", |
5002 | updelay, miimon, | |
5003 | (updelay / miimon) * miimon); | |
1da177e4 LT |
5004 | } |
5005 | ||
5006 | updelay /= miimon; | |
5007 | ||
5008 | if ((downdelay % miimon) != 0) { | |
a4aee5c8 JP |
5009 | pr_warning("Warning: downdelay (%d) is not a multiple of miimon (%d), downdelay rounded to %d ms\n", |
5010 | downdelay, miimon, | |
5011 | (downdelay / miimon) * miimon); | |
1da177e4 LT |
5012 | } |
5013 | ||
5014 | downdelay /= miimon; | |
5015 | } | |
5016 | ||
5017 | if (arp_interval < 0) { | |
a4aee5c8 JP |
5018 | pr_warning("Warning: arp_interval module parameter (%d) , not in range 0-%d, so it was reset to %d\n", |
5019 | arp_interval, INT_MAX, BOND_LINK_ARP_INTERV); | |
1da177e4 LT |
5020 | arp_interval = BOND_LINK_ARP_INTERV; |
5021 | } | |
5022 | ||
5023 | for (arp_ip_count = 0; | |
5024 | (arp_ip_count < BOND_MAX_ARP_TARGETS) && arp_ip_target[arp_ip_count]; | |
5025 | arp_ip_count++) { | |
5026 | /* not complete check, but should be good enough to | |
5027 | catch mistakes */ | |
5028 | if (!isdigit(arp_ip_target[arp_ip_count][0])) { | |
a4aee5c8 JP |
5029 | pr_warning("Warning: bad arp_ip_target module parameter (%s), ARP monitoring will not be performed\n", |
5030 | arp_ip_target[arp_ip_count]); | |
1da177e4 LT |
5031 | arp_interval = 0; |
5032 | } else { | |
d3bb52b0 | 5033 | __be32 ip = in_aton(arp_ip_target[arp_ip_count]); |
1da177e4 LT |
5034 | arp_target[arp_ip_count] = ip; |
5035 | } | |
5036 | } | |
5037 | ||
5038 | if (arp_interval && !arp_ip_count) { | |
5039 | /* don't allow arping if no arp_ip_target given... */ | |
a4aee5c8 JP |
5040 | pr_warning("Warning: arp_interval module parameter (%d) specified without providing an arp_ip_target parameter, arp_interval was reset to 0\n", |
5041 | arp_interval); | |
1da177e4 LT |
5042 | arp_interval = 0; |
5043 | } | |
5044 | ||
f5b2b966 JV |
5045 | if (arp_validate) { |
5046 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) { | |
a4aee5c8 | 5047 | pr_err("arp_validate only supported in active-backup mode\n"); |
f5b2b966 JV |
5048 | return -EINVAL; |
5049 | } | |
5050 | if (!arp_interval) { | |
a4aee5c8 | 5051 | pr_err("arp_validate requires arp_interval\n"); |
f5b2b966 JV |
5052 | return -EINVAL; |
5053 | } | |
5054 | ||
5055 | arp_validate_value = bond_parse_parm(arp_validate, | |
5056 | arp_validate_tbl); | |
5057 | if (arp_validate_value == -1) { | |
a4aee5c8 | 5058 | pr_err("Error: invalid arp_validate \"%s\"\n", |
f5b2b966 JV |
5059 | arp_validate == NULL ? "NULL" : arp_validate); |
5060 | return -EINVAL; | |
5061 | } | |
5062 | } else | |
5063 | arp_validate_value = 0; | |
5064 | ||
1da177e4 | 5065 | if (miimon) { |
a4aee5c8 | 5066 | pr_info("MII link monitoring set to %d ms\n", miimon); |
1da177e4 LT |
5067 | } else if (arp_interval) { |
5068 | int i; | |
5069 | ||
a4aee5c8 JP |
5070 | pr_info("ARP monitoring set to %d ms, validate %s, with %d target(s):", |
5071 | arp_interval, | |
5072 | arp_validate_tbl[arp_validate_value].modename, | |
5073 | arp_ip_count); | |
1da177e4 LT |
5074 | |
5075 | for (i = 0; i < arp_ip_count; i++) | |
e5e2a8fd | 5076 | pr_info(" %s", arp_ip_target[i]); |
1da177e4 | 5077 | |
e5e2a8fd | 5078 | pr_info("\n"); |
1da177e4 | 5079 | |
b8a9787e | 5080 | } else if (max_bonds) { |
1da177e4 LT |
5081 | /* miimon and arp_interval not set, we need one so things |
5082 | * work as expected, see bonding.txt for details | |
5083 | */ | |
a4aee5c8 | 5084 | 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 |
5085 | } |
5086 | ||
5087 | if (primary && !USES_PRIMARY(bond_mode)) { | |
5088 | /* currently, using a primary only makes sense | |
5089 | * in active backup, TLB or ALB modes | |
5090 | */ | |
a4aee5c8 JP |
5091 | pr_warning("Warning: %s primary device specified but has no effect in %s mode\n", |
5092 | primary, bond_mode_name(bond_mode)); | |
1da177e4 LT |
5093 | primary = NULL; |
5094 | } | |
5095 | ||
a549952a JP |
5096 | if (primary && primary_reselect) { |
5097 | primary_reselect_value = bond_parse_parm(primary_reselect, | |
5098 | pri_reselect_tbl); | |
5099 | if (primary_reselect_value == -1) { | |
a4aee5c8 | 5100 | pr_err("Error: Invalid primary_reselect \"%s\"\n", |
a549952a JP |
5101 | primary_reselect == |
5102 | NULL ? "NULL" : primary_reselect); | |
5103 | return -EINVAL; | |
5104 | } | |
5105 | } else { | |
5106 | primary_reselect_value = BOND_PRI_RESELECT_ALWAYS; | |
5107 | } | |
5108 | ||
3915c1e8 JV |
5109 | if (fail_over_mac) { |
5110 | fail_over_mac_value = bond_parse_parm(fail_over_mac, | |
5111 | fail_over_mac_tbl); | |
5112 | if (fail_over_mac_value == -1) { | |
a4aee5c8 | 5113 | pr_err("Error: invalid fail_over_mac \"%s\"\n", |
3915c1e8 JV |
5114 | arp_validate == NULL ? "NULL" : arp_validate); |
5115 | return -EINVAL; | |
5116 | } | |
5117 | ||
5118 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) | |
a4aee5c8 | 5119 | pr_warning("Warning: fail_over_mac only affects active-backup mode.\n"); |
3915c1e8 JV |
5120 | } else { |
5121 | fail_over_mac_value = BOND_FOM_NONE; | |
5122 | } | |
dd957c57 | 5123 | |
1da177e4 LT |
5124 | /* fill params struct with the proper values */ |
5125 | params->mode = bond_mode; | |
169a3e66 | 5126 | params->xmit_policy = xmit_hashtype; |
1da177e4 | 5127 | params->miimon = miimon; |
7893b249 | 5128 | params->num_grat_arp = num_grat_arp; |
305d552a | 5129 | params->num_unsol_na = num_unsol_na; |
1da177e4 | 5130 | params->arp_interval = arp_interval; |
f5b2b966 | 5131 | params->arp_validate = arp_validate_value; |
1da177e4 LT |
5132 | params->updelay = updelay; |
5133 | params->downdelay = downdelay; | |
5134 | params->use_carrier = use_carrier; | |
5135 | params->lacp_fast = lacp_fast; | |
5136 | params->primary[0] = 0; | |
a549952a | 5137 | params->primary_reselect = primary_reselect_value; |
3915c1e8 | 5138 | params->fail_over_mac = fail_over_mac_value; |
bb1d9123 | 5139 | params->tx_queues = tx_queues; |
ebd8e497 | 5140 | params->all_slaves_active = all_slaves_active; |
c2952c31 | 5141 | params->resend_igmp = resend_igmp; |
1da177e4 LT |
5142 | |
5143 | if (primary) { | |
5144 | strncpy(params->primary, primary, IFNAMSIZ); | |
5145 | params->primary[IFNAMSIZ - 1] = 0; | |
5146 | } | |
5147 | ||
5148 | memcpy(params->arp_targets, arp_target, sizeof(arp_target)); | |
5149 | ||
5150 | return 0; | |
5151 | } | |
5152 | ||
0daa2303 | 5153 | static struct lock_class_key bonding_netdev_xmit_lock_key; |
cf508b12 | 5154 | static struct lock_class_key bonding_netdev_addr_lock_key; |
0daa2303 | 5155 | |
e8a0464c DM |
5156 | static void bond_set_lockdep_class_one(struct net_device *dev, |
5157 | struct netdev_queue *txq, | |
5158 | void *_unused) | |
c773e847 DM |
5159 | { |
5160 | lockdep_set_class(&txq->_xmit_lock, | |
5161 | &bonding_netdev_xmit_lock_key); | |
5162 | } | |
5163 | ||
5164 | static void bond_set_lockdep_class(struct net_device *dev) | |
5165 | { | |
cf508b12 DM |
5166 | lockdep_set_class(&dev->addr_list_lock, |
5167 | &bonding_netdev_addr_lock_key); | |
e8a0464c | 5168 | netdev_for_each_tx_queue(dev, bond_set_lockdep_class_one, NULL); |
c773e847 DM |
5169 | } |
5170 | ||
181470fc SH |
5171 | /* |
5172 | * Called from registration process | |
5173 | */ | |
5174 | static int bond_init(struct net_device *bond_dev) | |
5175 | { | |
5176 | struct bonding *bond = netdev_priv(bond_dev); | |
ec87fd3b | 5177 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); |
181470fc SH |
5178 | |
5179 | pr_debug("Begin bond_init for %s\n", bond_dev->name); | |
5180 | ||
5181 | bond->wq = create_singlethread_workqueue(bond_dev->name); | |
5182 | if (!bond->wq) | |
5183 | return -ENOMEM; | |
5184 | ||
5185 | bond_set_lockdep_class(bond_dev); | |
5186 | ||
5187 | netif_carrier_off(bond_dev); | |
5188 | ||
5189 | bond_create_proc_entry(bond); | |
ec87fd3b | 5190 | list_add_tail(&bond->bond_list, &bn->dev_list); |
181470fc | 5191 | |
6151b3d4 | 5192 | bond_prepare_sysfs_group(bond); |
22bedad3 JP |
5193 | |
5194 | __hw_addr_init(&bond->mc_list); | |
181470fc SH |
5195 | return 0; |
5196 | } | |
5197 | ||
88ead977 EB |
5198 | static int bond_validate(struct nlattr *tb[], struct nlattr *data[]) |
5199 | { | |
5200 | if (tb[IFLA_ADDRESS]) { | |
5201 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
5202 | return -EINVAL; | |
5203 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
5204 | return -EADDRNOTAVAIL; | |
5205 | } | |
5206 | return 0; | |
5207 | } | |
5208 | ||
5209 | static struct rtnl_link_ops bond_link_ops __read_mostly = { | |
5210 | .kind = "bond", | |
6639104b | 5211 | .priv_size = sizeof(struct bonding), |
88ead977 EB |
5212 | .setup = bond_setup, |
5213 | .validate = bond_validate, | |
5214 | }; | |
5215 | ||
dfe60397 | 5216 | /* Create a new bond based on the specified name and bonding parameters. |
e4b91c48 | 5217 | * If name is NULL, obtain a suitable "bond%d" name for us. |
dfe60397 MW |
5218 | * Caller must NOT hold rtnl_lock; we need to release it here before we |
5219 | * set up our sysfs entries. | |
5220 | */ | |
ec87fd3b | 5221 | int bond_create(struct net *net, const char *name) |
dfe60397 MW |
5222 | { |
5223 | struct net_device *bond_dev; | |
5224 | int res; | |
5225 | ||
5226 | rtnl_lock(); | |
027ea041 | 5227 | |
bb1d9123 AG |
5228 | bond_dev = alloc_netdev_mq(sizeof(struct bonding), name ? name : "", |
5229 | bond_setup, tx_queues); | |
dfe60397 | 5230 | if (!bond_dev) { |
a4aee5c8 | 5231 | pr_err("%s: eek! can't alloc netdev!\n", name); |
9e2e61fb AW |
5232 | rtnl_unlock(); |
5233 | return -ENOMEM; | |
dfe60397 MW |
5234 | } |
5235 | ||
ec87fd3b | 5236 | dev_net_set(bond_dev, net); |
88ead977 EB |
5237 | bond_dev->rtnl_link_ops = &bond_link_ops; |
5238 | ||
e4b91c48 JV |
5239 | if (!name) { |
5240 | res = dev_alloc_name(bond_dev, "bond%d"); | |
5241 | if (res < 0) | |
9e2e61fb | 5242 | goto out; |
27e6f065 NH |
5243 | } else { |
5244 | /* | |
5245 | * If we're given a name to register | |
5246 | * we need to ensure that its not already | |
5247 | * registered | |
5248 | */ | |
5249 | res = -EEXIST; | |
5250 | if (__dev_get_by_name(net, name) != NULL) | |
5251 | goto out; | |
e4b91c48 JV |
5252 | } |
5253 | ||
dfe60397 | 5254 | res = register_netdevice(bond_dev); |
0daa2303 | 5255 | |
30c15ba9 | 5256 | out: |
7e083840 | 5257 | rtnl_unlock(); |
9e2e61fb AW |
5258 | if (res < 0) |
5259 | bond_destructor(bond_dev); | |
30c15ba9 | 5260 | return res; |
dfe60397 MW |
5261 | } |
5262 | ||
2c8c1e72 | 5263 | static int __net_init bond_net_init(struct net *net) |
ec87fd3b | 5264 | { |
15449745 | 5265 | struct bond_net *bn = net_generic(net, bond_net_id); |
ec87fd3b EB |
5266 | |
5267 | bn->net = net; | |
5268 | INIT_LIST_HEAD(&bn->dev_list); | |
5269 | ||
ec87fd3b | 5270 | bond_create_proc_dir(bn); |
15449745 EB |
5271 | |
5272 | return 0; | |
ec87fd3b EB |
5273 | } |
5274 | ||
2c8c1e72 | 5275 | static void __net_exit bond_net_exit(struct net *net) |
ec87fd3b | 5276 | { |
15449745 | 5277 | struct bond_net *bn = net_generic(net, bond_net_id); |
ec87fd3b EB |
5278 | |
5279 | bond_destroy_proc_dir(bn); | |
ec87fd3b EB |
5280 | } |
5281 | ||
5282 | static struct pernet_operations bond_net_ops = { | |
5283 | .init = bond_net_init, | |
5284 | .exit = bond_net_exit, | |
15449745 EB |
5285 | .id = &bond_net_id, |
5286 | .size = sizeof(struct bond_net), | |
ec87fd3b EB |
5287 | }; |
5288 | ||
1da177e4 LT |
5289 | static int __init bonding_init(void) |
5290 | { | |
1da177e4 LT |
5291 | int i; |
5292 | int res; | |
5293 | ||
3d632c3f | 5294 | pr_info("%s", version); |
1da177e4 | 5295 | |
dfe60397 | 5296 | res = bond_check_params(&bonding_defaults); |
3d632c3f | 5297 | if (res) |
dfe60397 | 5298 | goto out; |
1da177e4 | 5299 | |
e843fa50 NH |
5300 | #ifdef CONFIG_NET_POLL_CONTROLLER |
5301 | if (!alloc_cpumask_var(&netpoll_block_tx, GFP_KERNEL)) { | |
5302 | res = -ENOMEM; | |
5303 | goto out; | |
5304 | } | |
5305 | #endif | |
5306 | ||
15449745 | 5307 | res = register_pernet_subsys(&bond_net_ops); |
ec87fd3b EB |
5308 | if (res) |
5309 | goto out; | |
027ea041 | 5310 | |
88ead977 EB |
5311 | res = rtnl_link_register(&bond_link_ops); |
5312 | if (res) | |
6639104b | 5313 | goto err_link; |
88ead977 | 5314 | |
1da177e4 | 5315 | for (i = 0; i < max_bonds; i++) { |
ec87fd3b | 5316 | res = bond_create(&init_net, NULL); |
dfe60397 MW |
5317 | if (res) |
5318 | goto err; | |
1da177e4 LT |
5319 | } |
5320 | ||
b76cdba9 MW |
5321 | res = bond_create_sysfs(); |
5322 | if (res) | |
5323 | goto err; | |
5324 | ||
e843fa50 | 5325 | |
1da177e4 | 5326 | register_netdevice_notifier(&bond_netdev_notifier); |
c3ade5ca | 5327 | register_inetaddr_notifier(&bond_inetaddr_notifier); |
305d552a | 5328 | bond_register_ipv6_notifier(); |
dfe60397 | 5329 | out: |
1da177e4 | 5330 | return res; |
88ead977 EB |
5331 | err: |
5332 | rtnl_link_unregister(&bond_link_ops); | |
6639104b | 5333 | err_link: |
15449745 | 5334 | unregister_pernet_subsys(&bond_net_ops); |
e843fa50 NH |
5335 | #ifdef CONFIG_NET_POLL_CONTROLLER |
5336 | free_cpumask_var(netpoll_block_tx); | |
5337 | #endif | |
88ead977 | 5338 | goto out; |
dfe60397 | 5339 | |
1da177e4 LT |
5340 | } |
5341 | ||
5342 | static void __exit bonding_exit(void) | |
5343 | { | |
5344 | unregister_netdevice_notifier(&bond_netdev_notifier); | |
c3ade5ca | 5345 | unregister_inetaddr_notifier(&bond_inetaddr_notifier); |
305d552a | 5346 | bond_unregister_ipv6_notifier(); |
1da177e4 | 5347 | |
ae68c398 PE |
5348 | bond_destroy_sysfs(); |
5349 | ||
88ead977 | 5350 | rtnl_link_unregister(&bond_link_ops); |
15449745 | 5351 | unregister_pernet_subsys(&bond_net_ops); |
e843fa50 NH |
5352 | |
5353 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
5354 | free_cpumask_var(netpoll_block_tx); | |
5355 | #endif | |
1da177e4 LT |
5356 | } |
5357 | ||
5358 | module_init(bonding_init); | |
5359 | module_exit(bonding_exit); | |
5360 | MODULE_LICENSE("GPL"); | |
5361 | MODULE_VERSION(DRV_VERSION); | |
5362 | MODULE_DESCRIPTION(DRV_DESCRIPTION ", v" DRV_VERSION); | |
5363 | MODULE_AUTHOR("Thomas Davis, tadavis@lbl.gov and many others"); | |
88ead977 | 5364 | MODULE_ALIAS_RTNL_LINK("bond"); |