]>
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 | 173 | #ifdef CONFIG_NET_POLL_CONTROLLER |
fb4fa76a | 174 | atomic_t netpoll_block_tx = ATOMIC_INIT(0); |
e843fa50 NH |
175 | #endif |
176 | ||
f71e1309 | 177 | static const char * const version = |
1da177e4 LT |
178 | DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n"; |
179 | ||
f99189b1 | 180 | int bond_net_id __read_mostly; |
1da177e4 | 181 | |
3d632c3f SH |
182 | static __be32 arp_target[BOND_MAX_ARP_TARGETS]; |
183 | static int arp_ip_count; | |
1da177e4 | 184 | static int bond_mode = BOND_MODE_ROUNDROBIN; |
3d632c3f SH |
185 | static int xmit_hashtype = BOND_XMIT_POLICY_LAYER2; |
186 | static int lacp_fast; | |
1da177e4 | 187 | |
e97fd7c6 | 188 | const struct bond_parm_tbl bond_lacp_tbl[] = { |
1da177e4 LT |
189 | { "slow", AD_LACP_SLOW}, |
190 | { "fast", AD_LACP_FAST}, | |
191 | { NULL, -1}, | |
192 | }; | |
193 | ||
e97fd7c6 | 194 | const struct bond_parm_tbl bond_mode_tbl[] = { |
1da177e4 LT |
195 | { "balance-rr", BOND_MODE_ROUNDROBIN}, |
196 | { "active-backup", BOND_MODE_ACTIVEBACKUP}, | |
197 | { "balance-xor", BOND_MODE_XOR}, | |
198 | { "broadcast", BOND_MODE_BROADCAST}, | |
199 | { "802.3ad", BOND_MODE_8023AD}, | |
200 | { "balance-tlb", BOND_MODE_TLB}, | |
201 | { "balance-alb", BOND_MODE_ALB}, | |
202 | { NULL, -1}, | |
203 | }; | |
204 | ||
e97fd7c6 | 205 | const struct bond_parm_tbl xmit_hashtype_tbl[] = { |
169a3e66 JV |
206 | { "layer2", BOND_XMIT_POLICY_LAYER2}, |
207 | { "layer3+4", BOND_XMIT_POLICY_LAYER34}, | |
6f6652be | 208 | { "layer2+3", BOND_XMIT_POLICY_LAYER23}, |
169a3e66 JV |
209 | { NULL, -1}, |
210 | }; | |
211 | ||
e97fd7c6 | 212 | const struct bond_parm_tbl arp_validate_tbl[] = { |
f5b2b966 JV |
213 | { "none", BOND_ARP_VALIDATE_NONE}, |
214 | { "active", BOND_ARP_VALIDATE_ACTIVE}, | |
215 | { "backup", BOND_ARP_VALIDATE_BACKUP}, | |
216 | { "all", BOND_ARP_VALIDATE_ALL}, | |
217 | { NULL, -1}, | |
218 | }; | |
219 | ||
e97fd7c6 | 220 | const struct bond_parm_tbl fail_over_mac_tbl[] = { |
3915c1e8 JV |
221 | { "none", BOND_FOM_NONE}, |
222 | { "active", BOND_FOM_ACTIVE}, | |
223 | { "follow", BOND_FOM_FOLLOW}, | |
224 | { NULL, -1}, | |
225 | }; | |
226 | ||
a549952a JP |
227 | const struct bond_parm_tbl pri_reselect_tbl[] = { |
228 | { "always", BOND_PRI_RESELECT_ALWAYS}, | |
229 | { "better", BOND_PRI_RESELECT_BETTER}, | |
230 | { "failure", BOND_PRI_RESELECT_FAILURE}, | |
231 | { NULL, -1}, | |
232 | }; | |
233 | ||
fd989c83 JV |
234 | struct bond_parm_tbl ad_select_tbl[] = { |
235 | { "stable", BOND_AD_STABLE}, | |
236 | { "bandwidth", BOND_AD_BANDWIDTH}, | |
237 | { "count", BOND_AD_COUNT}, | |
238 | { NULL, -1}, | |
239 | }; | |
240 | ||
1da177e4 LT |
241 | /*-------------------------- Forward declarations ---------------------------*/ |
242 | ||
c3ade5ca | 243 | static void bond_send_gratuitous_arp(struct bonding *bond); |
181470fc | 244 | static int bond_init(struct net_device *bond_dev); |
c67dfb29 | 245 | static void bond_uninit(struct net_device *bond_dev); |
1da177e4 LT |
246 | |
247 | /*---------------------------- General routines -----------------------------*/ | |
248 | ||
4ad072c9 | 249 | static const char *bond_mode_name(int mode) |
1da177e4 | 250 | { |
77afc92b HE |
251 | static const char *names[] = { |
252 | [BOND_MODE_ROUNDROBIN] = "load balancing (round-robin)", | |
253 | [BOND_MODE_ACTIVEBACKUP] = "fault-tolerance (active-backup)", | |
254 | [BOND_MODE_XOR] = "load balancing (xor)", | |
255 | [BOND_MODE_BROADCAST] = "fault-tolerance (broadcast)", | |
3d632c3f | 256 | [BOND_MODE_8023AD] = "IEEE 802.3ad Dynamic link aggregation", |
77afc92b HE |
257 | [BOND_MODE_TLB] = "transmit load balancing", |
258 | [BOND_MODE_ALB] = "adaptive load balancing", | |
259 | }; | |
260 | ||
261 | if (mode < 0 || mode > BOND_MODE_ALB) | |
1da177e4 | 262 | return "unknown"; |
77afc92b HE |
263 | |
264 | return names[mode]; | |
1da177e4 LT |
265 | } |
266 | ||
267 | /*---------------------------------- VLAN -----------------------------------*/ | |
268 | ||
269 | /** | |
270 | * bond_add_vlan - add a new vlan id on bond | |
271 | * @bond: bond that got the notification | |
272 | * @vlan_id: the vlan id to add | |
273 | * | |
274 | * Returns -ENOMEM if allocation failed. | |
275 | */ | |
276 | static int bond_add_vlan(struct bonding *bond, unsigned short vlan_id) | |
277 | { | |
278 | struct vlan_entry *vlan; | |
279 | ||
5a03cdb7 | 280 | pr_debug("bond: %s, vlan id %d\n", |
a4aee5c8 | 281 | (bond ? bond->dev->name : "None"), vlan_id); |
1da177e4 | 282 | |
305d552a | 283 | vlan = kzalloc(sizeof(struct vlan_entry), GFP_KERNEL); |
3d632c3f | 284 | if (!vlan) |
1da177e4 | 285 | return -ENOMEM; |
1da177e4 LT |
286 | |
287 | INIT_LIST_HEAD(&vlan->vlan_list); | |
288 | vlan->vlan_id = vlan_id; | |
289 | ||
290 | write_lock_bh(&bond->lock); | |
291 | ||
292 | list_add_tail(&vlan->vlan_list, &bond->vlan_list); | |
293 | ||
294 | write_unlock_bh(&bond->lock); | |
295 | ||
5a03cdb7 | 296 | pr_debug("added VLAN ID %d on bond %s\n", vlan_id, bond->dev->name); |
1da177e4 LT |
297 | |
298 | return 0; | |
299 | } | |
300 | ||
301 | /** | |
302 | * bond_del_vlan - delete a vlan id from bond | |
303 | * @bond: bond that got the notification | |
304 | * @vlan_id: the vlan id to delete | |
305 | * | |
306 | * returns -ENODEV if @vlan_id was not found in @bond. | |
307 | */ | |
308 | static int bond_del_vlan(struct bonding *bond, unsigned short vlan_id) | |
309 | { | |
0883beca | 310 | struct vlan_entry *vlan; |
1da177e4 LT |
311 | int res = -ENODEV; |
312 | ||
5a03cdb7 | 313 | pr_debug("bond: %s, vlan id %d\n", bond->dev->name, vlan_id); |
1da177e4 | 314 | |
e843fa50 | 315 | block_netpoll_tx(); |
1da177e4 LT |
316 | write_lock_bh(&bond->lock); |
317 | ||
0883beca | 318 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
1da177e4 LT |
319 | if (vlan->vlan_id == vlan_id) { |
320 | list_del(&vlan->vlan_list); | |
321 | ||
58402054 | 322 | if (bond_is_lb(bond)) |
1da177e4 | 323 | bond_alb_clear_vlan(bond, vlan_id); |
1da177e4 | 324 | |
a4aee5c8 JP |
325 | pr_debug("removed VLAN ID %d from bond %s\n", |
326 | vlan_id, bond->dev->name); | |
1da177e4 LT |
327 | |
328 | kfree(vlan); | |
329 | ||
330 | if (list_empty(&bond->vlan_list) && | |
331 | (bond->slave_cnt == 0)) { | |
332 | /* Last VLAN removed and no slaves, so | |
333 | * restore block on adding VLANs. This will | |
334 | * be removed once new slaves that are not | |
335 | * VLAN challenged will be added. | |
336 | */ | |
337 | bond->dev->features |= NETIF_F_VLAN_CHALLENGED; | |
338 | } | |
339 | ||
340 | res = 0; | |
341 | goto out; | |
342 | } | |
343 | } | |
344 | ||
a4aee5c8 JP |
345 | pr_debug("couldn't find VLAN ID %d in bond %s\n", |
346 | vlan_id, bond->dev->name); | |
1da177e4 LT |
347 | |
348 | out: | |
349 | write_unlock_bh(&bond->lock); | |
e843fa50 | 350 | unblock_netpoll_tx(); |
1da177e4 LT |
351 | return res; |
352 | } | |
353 | ||
354 | /** | |
355 | * bond_has_challenged_slaves | |
356 | * @bond: the bond we're working on | |
357 | * | |
358 | * Searches the slave list. Returns 1 if a vlan challenged slave | |
359 | * was found, 0 otherwise. | |
360 | * | |
361 | * Assumes bond->lock is held. | |
362 | */ | |
363 | static int bond_has_challenged_slaves(struct bonding *bond) | |
364 | { | |
365 | struct slave *slave; | |
366 | int i; | |
367 | ||
368 | bond_for_each_slave(bond, slave, i) { | |
369 | if (slave->dev->features & NETIF_F_VLAN_CHALLENGED) { | |
5a03cdb7 | 370 | pr_debug("found VLAN challenged slave - %s\n", |
a4aee5c8 | 371 | slave->dev->name); |
1da177e4 LT |
372 | return 1; |
373 | } | |
374 | } | |
375 | ||
5a03cdb7 | 376 | pr_debug("no VLAN challenged slaves found\n"); |
1da177e4 LT |
377 | return 0; |
378 | } | |
379 | ||
380 | /** | |
381 | * bond_next_vlan - safely skip to the next item in the vlans list. | |
382 | * @bond: the bond we're working on | |
383 | * @curr: item we're advancing from | |
384 | * | |
385 | * Returns %NULL if list is empty, bond->next_vlan if @curr is %NULL, | |
386 | * or @curr->next otherwise (even if it is @curr itself again). | |
3d632c3f | 387 | * |
1da177e4 LT |
388 | * Caller must hold bond->lock |
389 | */ | |
390 | struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr) | |
391 | { | |
392 | struct vlan_entry *next, *last; | |
393 | ||
3d632c3f | 394 | if (list_empty(&bond->vlan_list)) |
1da177e4 | 395 | return NULL; |
1da177e4 LT |
396 | |
397 | if (!curr) { | |
398 | next = list_entry(bond->vlan_list.next, | |
399 | struct vlan_entry, vlan_list); | |
400 | } else { | |
401 | last = list_entry(bond->vlan_list.prev, | |
402 | struct vlan_entry, vlan_list); | |
403 | if (last == curr) { | |
404 | next = list_entry(bond->vlan_list.next, | |
405 | struct vlan_entry, vlan_list); | |
406 | } else { | |
407 | next = list_entry(curr->vlan_list.next, | |
408 | struct vlan_entry, vlan_list); | |
409 | } | |
410 | } | |
411 | ||
412 | return next; | |
413 | } | |
414 | ||
415 | /** | |
416 | * bond_dev_queue_xmit - Prepare skb for xmit. | |
3d632c3f | 417 | * |
1da177e4 LT |
418 | * @bond: bond device that got this skb for tx. |
419 | * @skb: hw accel VLAN tagged skb to transmit | |
420 | * @slave_dev: slave that is supposed to xmit this skbuff | |
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 | ||
a71fb881 | 496 | write_lock_bh(&bond->lock); |
1da177e4 | 497 | bond->vlgrp = grp; |
a71fb881 | 498 | write_unlock_bh(&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) { |
3006bc38 | 881 | read_lock(&in_dev->mc_list_lock); |
3d632c3f | 882 | for (im = in_dev->mc_list; im; im = im->next) |
a816c7c7 | 883 | ip_mc_rejoin_group(im); |
3006bc38 | 884 | read_unlock(&in_dev->mc_list_lock); |
a816c7c7 JV |
885 | } |
886 | ||
887 | rcu_read_unlock(); | |
888 | } | |
889 | ||
5a37e8ca FL |
890 | /* |
891 | * Retrieve the list of registered multicast addresses for the bonding | |
892 | * device and retransmit an IGMP JOIN request to the current active | |
893 | * slave. | |
894 | */ | |
895 | static void bond_resend_igmp_join_requests(struct bonding *bond) | |
896 | { | |
897 | struct net_device *vlan_dev; | |
898 | struct vlan_entry *vlan; | |
899 | ||
900 | read_lock(&bond->lock); | |
901 | ||
902 | /* rejoin all groups on bond device */ | |
903 | __bond_resend_igmp_join_requests(bond->dev); | |
904 | ||
905 | /* rejoin all groups on vlan devices */ | |
906 | if (bond->vlgrp) { | |
907 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { | |
908 | vlan_dev = vlan_group_get_device(bond->vlgrp, | |
909 | vlan->vlan_id); | |
910 | if (vlan_dev) | |
911 | __bond_resend_igmp_join_requests(vlan_dev); | |
912 | } | |
913 | } | |
914 | ||
c2952c31 FL |
915 | if (--bond->igmp_retrans > 0) |
916 | queue_delayed_work(bond->wq, &bond->mcast_work, HZ/5); | |
917 | ||
5a37e8ca FL |
918 | read_unlock(&bond->lock); |
919 | } | |
920 | ||
379b7383 | 921 | static void bond_resend_igmp_join_requests_delayed(struct work_struct *work) |
5a37e8ca FL |
922 | { |
923 | struct bonding *bond = container_of(work, struct bonding, | |
924 | mcast_work.work); | |
925 | bond_resend_igmp_join_requests(bond); | |
926 | } | |
927 | ||
1da177e4 LT |
928 | /* |
929 | * flush all members of flush->mc_list from device dev->mc_list | |
930 | */ | |
3d632c3f SH |
931 | static void bond_mc_list_flush(struct net_device *bond_dev, |
932 | struct net_device *slave_dev) | |
1da177e4 | 933 | { |
454d7c9b | 934 | struct bonding *bond = netdev_priv(bond_dev); |
22bedad3 | 935 | struct netdev_hw_addr *ha; |
1da177e4 | 936 | |
22bedad3 JP |
937 | netdev_for_each_mc_addr(ha, bond_dev) |
938 | dev_mc_del(slave_dev, ha->addr); | |
1da177e4 LT |
939 | |
940 | if (bond->params.mode == BOND_MODE_8023AD) { | |
941 | /* del lacpdu mc addr from mc list */ | |
942 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; | |
943 | ||
22bedad3 | 944 | dev_mc_del(slave_dev, lacpdu_multicast); |
1da177e4 LT |
945 | } |
946 | } | |
947 | ||
948 | /*--------------------------- Active slave change ---------------------------*/ | |
949 | ||
950 | /* | |
951 | * Update the mc list and multicast-related flags for the new and | |
952 | * old active slaves (if any) according to the multicast mode, and | |
953 | * promiscuous flags unconditionally. | |
954 | */ | |
3d632c3f SH |
955 | static void bond_mc_swap(struct bonding *bond, struct slave *new_active, |
956 | struct slave *old_active) | |
1da177e4 | 957 | { |
22bedad3 | 958 | struct netdev_hw_addr *ha; |
1da177e4 | 959 | |
3d632c3f | 960 | if (!USES_PRIMARY(bond->params.mode)) |
1da177e4 LT |
961 | /* nothing to do - mc list is already up-to-date on |
962 | * all slaves | |
963 | */ | |
964 | return; | |
1da177e4 LT |
965 | |
966 | if (old_active) { | |
3d632c3f | 967 | if (bond->dev->flags & IFF_PROMISC) |
1da177e4 | 968 | dev_set_promiscuity(old_active->dev, -1); |
1da177e4 | 969 | |
3d632c3f | 970 | if (bond->dev->flags & IFF_ALLMULTI) |
1da177e4 | 971 | dev_set_allmulti(old_active->dev, -1); |
1da177e4 | 972 | |
22bedad3 JP |
973 | netdev_for_each_mc_addr(ha, bond->dev) |
974 | dev_mc_del(old_active->dev, ha->addr); | |
1da177e4 LT |
975 | } |
976 | ||
977 | if (new_active) { | |
7e1a1ac1 | 978 | /* FIXME: Signal errors upstream. */ |
3d632c3f | 979 | if (bond->dev->flags & IFF_PROMISC) |
1da177e4 | 980 | dev_set_promiscuity(new_active->dev, 1); |
1da177e4 | 981 | |
3d632c3f | 982 | if (bond->dev->flags & IFF_ALLMULTI) |
1da177e4 | 983 | dev_set_allmulti(new_active->dev, 1); |
1da177e4 | 984 | |
22bedad3 JP |
985 | netdev_for_each_mc_addr(ha, bond->dev) |
986 | dev_mc_add(new_active->dev, ha->addr); | |
1da177e4 LT |
987 | } |
988 | } | |
989 | ||
3915c1e8 JV |
990 | /* |
991 | * bond_do_fail_over_mac | |
992 | * | |
993 | * Perform special MAC address swapping for fail_over_mac settings | |
994 | * | |
995 | * Called with RTNL, bond->lock for read, curr_slave_lock for write_bh. | |
996 | */ | |
997 | static void bond_do_fail_over_mac(struct bonding *bond, | |
998 | struct slave *new_active, | |
999 | struct slave *old_active) | |
1f78d9f9 HE |
1000 | __releases(&bond->curr_slave_lock) |
1001 | __releases(&bond->lock) | |
1002 | __acquires(&bond->lock) | |
1003 | __acquires(&bond->curr_slave_lock) | |
3915c1e8 JV |
1004 | { |
1005 | u8 tmp_mac[ETH_ALEN]; | |
1006 | struct sockaddr saddr; | |
1007 | int rv; | |
1008 | ||
1009 | switch (bond->params.fail_over_mac) { | |
1010 | case BOND_FOM_ACTIVE: | |
1011 | if (new_active) | |
1012 | memcpy(bond->dev->dev_addr, new_active->dev->dev_addr, | |
1013 | new_active->dev->addr_len); | |
1014 | break; | |
1015 | case BOND_FOM_FOLLOW: | |
1016 | /* | |
1017 | * if new_active && old_active, swap them | |
1018 | * if just old_active, do nothing (going to no active slave) | |
1019 | * if just new_active, set new_active to bond's MAC | |
1020 | */ | |
1021 | if (!new_active) | |
1022 | return; | |
1023 | ||
1024 | write_unlock_bh(&bond->curr_slave_lock); | |
1025 | read_unlock(&bond->lock); | |
1026 | ||
1027 | if (old_active) { | |
1028 | memcpy(tmp_mac, new_active->dev->dev_addr, ETH_ALEN); | |
1029 | memcpy(saddr.sa_data, old_active->dev->dev_addr, | |
1030 | ETH_ALEN); | |
1031 | saddr.sa_family = new_active->dev->type; | |
1032 | } else { | |
1033 | memcpy(saddr.sa_data, bond->dev->dev_addr, ETH_ALEN); | |
1034 | saddr.sa_family = bond->dev->type; | |
1035 | } | |
1036 | ||
1037 | rv = dev_set_mac_address(new_active->dev, &saddr); | |
1038 | if (rv) { | |
a4aee5c8 | 1039 | pr_err("%s: Error %d setting MAC of slave %s\n", |
3915c1e8 JV |
1040 | bond->dev->name, -rv, new_active->dev->name); |
1041 | goto out; | |
1042 | } | |
1043 | ||
1044 | if (!old_active) | |
1045 | goto out; | |
1046 | ||
1047 | memcpy(saddr.sa_data, tmp_mac, ETH_ALEN); | |
1048 | saddr.sa_family = old_active->dev->type; | |
1049 | ||
1050 | rv = dev_set_mac_address(old_active->dev, &saddr); | |
1051 | if (rv) | |
a4aee5c8 | 1052 | pr_err("%s: Error %d setting MAC of slave %s\n", |
3915c1e8 JV |
1053 | bond->dev->name, -rv, new_active->dev->name); |
1054 | out: | |
1055 | read_lock(&bond->lock); | |
1056 | write_lock_bh(&bond->curr_slave_lock); | |
1057 | break; | |
1058 | default: | |
a4aee5c8 | 1059 | pr_err("%s: bond_do_fail_over_mac impossible: bad policy %d\n", |
3915c1e8 JV |
1060 | bond->dev->name, bond->params.fail_over_mac); |
1061 | break; | |
1062 | } | |
1063 | ||
1064 | } | |
1065 | ||
a549952a JP |
1066 | static bool bond_should_change_active(struct bonding *bond) |
1067 | { | |
1068 | struct slave *prim = bond->primary_slave; | |
1069 | struct slave *curr = bond->curr_active_slave; | |
1070 | ||
1071 | if (!prim || !curr || curr->link != BOND_LINK_UP) | |
1072 | return true; | |
1073 | if (bond->force_primary) { | |
1074 | bond->force_primary = false; | |
1075 | return true; | |
1076 | } | |
1077 | if (bond->params.primary_reselect == BOND_PRI_RESELECT_BETTER && | |
1078 | (prim->speed < curr->speed || | |
1079 | (prim->speed == curr->speed && prim->duplex <= curr->duplex))) | |
1080 | return false; | |
1081 | if (bond->params.primary_reselect == BOND_PRI_RESELECT_FAILURE) | |
1082 | return false; | |
1083 | return true; | |
1084 | } | |
3915c1e8 | 1085 | |
1da177e4 LT |
1086 | /** |
1087 | * find_best_interface - select the best available slave to be the active one | |
1088 | * @bond: our bonding struct | |
1089 | * | |
1090 | * Warning: Caller must hold curr_slave_lock for writing. | |
1091 | */ | |
1092 | static struct slave *bond_find_best_slave(struct bonding *bond) | |
1093 | { | |
1094 | struct slave *new_active, *old_active; | |
1095 | struct slave *bestslave = NULL; | |
1096 | int mintime = bond->params.updelay; | |
1097 | int i; | |
1098 | ||
49b4ad92 | 1099 | new_active = bond->curr_active_slave; |
1da177e4 LT |
1100 | |
1101 | if (!new_active) { /* there were no active slaves left */ | |
3d632c3f | 1102 | if (bond->slave_cnt > 0) /* found one slave */ |
1da177e4 | 1103 | new_active = bond->first_slave; |
3d632c3f | 1104 | else |
1da177e4 | 1105 | return NULL; /* still no slave, return NULL */ |
1da177e4 LT |
1106 | } |
1107 | ||
1da177e4 | 1108 | if ((bond->primary_slave) && |
a549952a JP |
1109 | bond->primary_slave->link == BOND_LINK_UP && |
1110 | bond_should_change_active(bond)) { | |
1da177e4 LT |
1111 | new_active = bond->primary_slave; |
1112 | } | |
1113 | ||
1114 | /* remember where to stop iterating over the slaves */ | |
1115 | old_active = new_active; | |
1116 | ||
1117 | bond_for_each_slave_from(bond, new_active, i, old_active) { | |
b9f60253 JP |
1118 | if (new_active->link == BOND_LINK_UP) { |
1119 | return new_active; | |
1120 | } else if (new_active->link == BOND_LINK_BACK && | |
1121 | IS_UP(new_active->dev)) { | |
1122 | /* link up, but waiting for stabilization */ | |
1123 | if (new_active->delay < mintime) { | |
1124 | mintime = new_active->delay; | |
1125 | bestslave = new_active; | |
1da177e4 LT |
1126 | } |
1127 | } | |
1128 | } | |
1129 | ||
1130 | return bestslave; | |
1131 | } | |
1132 | ||
1133 | /** | |
1134 | * change_active_interface - change the active slave into the specified one | |
1135 | * @bond: our bonding struct | |
1136 | * @new: the new slave to make the active one | |
1137 | * | |
1138 | * Set the new slave to the bond's settings and unset them on the old | |
1139 | * curr_active_slave. | |
1140 | * Setting include flags, mc-list, promiscuity, allmulti, etc. | |
1141 | * | |
1142 | * If @new's link state is %BOND_LINK_BACK we'll set it to %BOND_LINK_UP, | |
1143 | * because it is apparently the best available slave we have, even though its | |
1144 | * updelay hasn't timed out yet. | |
1145 | * | |
3915c1e8 JV |
1146 | * If new_active is not NULL, caller must hold bond->lock for read and |
1147 | * curr_slave_lock for write_bh. | |
1da177e4 | 1148 | */ |
a77b5325 | 1149 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active) |
1da177e4 LT |
1150 | { |
1151 | struct slave *old_active = bond->curr_active_slave; | |
1152 | ||
3d632c3f | 1153 | if (old_active == new_active) |
1da177e4 | 1154 | return; |
1da177e4 LT |
1155 | |
1156 | if (new_active) { | |
b2220cad JV |
1157 | new_active->jiffies = jiffies; |
1158 | ||
1da177e4 LT |
1159 | if (new_active->link == BOND_LINK_BACK) { |
1160 | if (USES_PRIMARY(bond->params.mode)) { | |
a4aee5c8 JP |
1161 | pr_info("%s: making interface %s the new active one %d ms earlier.\n", |
1162 | bond->dev->name, new_active->dev->name, | |
1163 | (bond->params.updelay - new_active->delay) * bond->params.miimon); | |
1da177e4 LT |
1164 | } |
1165 | ||
1166 | new_active->delay = 0; | |
1167 | new_active->link = BOND_LINK_UP; | |
1da177e4 | 1168 | |
3d632c3f | 1169 | if (bond->params.mode == BOND_MODE_8023AD) |
1da177e4 | 1170 | bond_3ad_handle_link_change(new_active, BOND_LINK_UP); |
1da177e4 | 1171 | |
58402054 | 1172 | if (bond_is_lb(bond)) |
1da177e4 | 1173 | bond_alb_handle_link_change(bond, new_active, BOND_LINK_UP); |
1da177e4 LT |
1174 | } else { |
1175 | if (USES_PRIMARY(bond->params.mode)) { | |
a4aee5c8 JP |
1176 | pr_info("%s: making interface %s the new active one.\n", |
1177 | bond->dev->name, new_active->dev->name); | |
1da177e4 LT |
1178 | } |
1179 | } | |
1180 | } | |
1181 | ||
3d632c3f | 1182 | if (USES_PRIMARY(bond->params.mode)) |
1da177e4 | 1183 | bond_mc_swap(bond, new_active, old_active); |
1da177e4 | 1184 | |
58402054 | 1185 | if (bond_is_lb(bond)) { |
1da177e4 | 1186 | bond_alb_handle_active_change(bond, new_active); |
8f903c70 JV |
1187 | if (old_active) |
1188 | bond_set_slave_inactive_flags(old_active); | |
1189 | if (new_active) | |
1190 | bond_set_slave_active_flags(new_active); | |
1da177e4 LT |
1191 | } else { |
1192 | bond->curr_active_slave = new_active; | |
1193 | } | |
c3ade5ca JV |
1194 | |
1195 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) { | |
3d632c3f | 1196 | if (old_active) |
c3ade5ca | 1197 | bond_set_slave_inactive_flags(old_active); |
c3ade5ca JV |
1198 | |
1199 | if (new_active) { | |
1200 | bond_set_slave_active_flags(new_active); | |
2ab82852 | 1201 | |
709f8a45 OG |
1202 | if (bond->params.fail_over_mac) |
1203 | bond_do_fail_over_mac(bond, new_active, | |
1204 | old_active); | |
3915c1e8 | 1205 | |
709f8a45 | 1206 | bond->send_grat_arp = bond->params.num_grat_arp; |
b59f9f74 | 1207 | bond_send_gratuitous_arp(bond); |
01f3109d | 1208 | |
305d552a BH |
1209 | bond->send_unsol_na = bond->params.num_unsol_na; |
1210 | bond_send_unsolicited_na(bond); | |
1211 | ||
01f3109d OG |
1212 | write_unlock_bh(&bond->curr_slave_lock); |
1213 | read_unlock(&bond->lock); | |
1214 | ||
75c78500 | 1215 | netdev_bonding_change(bond->dev, NETDEV_BONDING_FAILOVER); |
01f3109d OG |
1216 | |
1217 | read_lock(&bond->lock); | |
1218 | write_lock_bh(&bond->curr_slave_lock); | |
7893b249 | 1219 | } |
c3ade5ca | 1220 | } |
a2fd940f | 1221 | |
5a37e8ca FL |
1222 | /* resend IGMP joins since active slave has changed or |
1223 | * all were sent on curr_active_slave */ | |
1224 | if ((USES_PRIMARY(bond->params.mode) && new_active) || | |
1225 | bond->params.mode == BOND_MODE_ROUNDROBIN) { | |
c2952c31 | 1226 | bond->igmp_retrans = bond->params.resend_igmp; |
5a37e8ca | 1227 | queue_delayed_work(bond->wq, &bond->mcast_work, 0); |
a2fd940f | 1228 | } |
1da177e4 LT |
1229 | } |
1230 | ||
1231 | /** | |
1232 | * bond_select_active_slave - select a new active slave, if needed | |
1233 | * @bond: our bonding struct | |
1234 | * | |
3d632c3f | 1235 | * This functions should be called when one of the following occurs: |
1da177e4 LT |
1236 | * - The old curr_active_slave has been released or lost its link. |
1237 | * - The primary_slave has got its link back. | |
1238 | * - A slave has got its link back and there's no old curr_active_slave. | |
1239 | * | |
3915c1e8 | 1240 | * Caller must hold bond->lock for read and curr_slave_lock for write_bh. |
1da177e4 | 1241 | */ |
a77b5325 | 1242 | void bond_select_active_slave(struct bonding *bond) |
1da177e4 LT |
1243 | { |
1244 | struct slave *best_slave; | |
ff59c456 | 1245 | int rv; |
1da177e4 LT |
1246 | |
1247 | best_slave = bond_find_best_slave(bond); | |
1248 | if (best_slave != bond->curr_active_slave) { | |
1249 | bond_change_active_slave(bond, best_slave); | |
ff59c456 JV |
1250 | rv = bond_set_carrier(bond); |
1251 | if (!rv) | |
1252 | return; | |
1253 | ||
1254 | if (netif_carrier_ok(bond->dev)) { | |
a4aee5c8 JP |
1255 | pr_info("%s: first active interface up!\n", |
1256 | bond->dev->name); | |
ff59c456 | 1257 | } else { |
a4aee5c8 JP |
1258 | pr_info("%s: now running without any active interface !\n", |
1259 | bond->dev->name); | |
ff59c456 | 1260 | } |
1da177e4 LT |
1261 | } |
1262 | } | |
1263 | ||
1264 | /*--------------------------- slave list handling ---------------------------*/ | |
1265 | ||
1266 | /* | |
1267 | * This function attaches the slave to the end of list. | |
1268 | * | |
1269 | * bond->lock held for writing by caller. | |
1270 | */ | |
1271 | static void bond_attach_slave(struct bonding *bond, struct slave *new_slave) | |
1272 | { | |
1273 | if (bond->first_slave == NULL) { /* attaching the first slave */ | |
1274 | new_slave->next = new_slave; | |
1275 | new_slave->prev = new_slave; | |
1276 | bond->first_slave = new_slave; | |
1277 | } else { | |
1278 | new_slave->next = bond->first_slave; | |
1279 | new_slave->prev = bond->first_slave->prev; | |
1280 | new_slave->next->prev = new_slave; | |
1281 | new_slave->prev->next = new_slave; | |
1282 | } | |
1283 | ||
1284 | bond->slave_cnt++; | |
1285 | } | |
1286 | ||
1287 | /* | |
1288 | * This function detaches the slave from the list. | |
1289 | * WARNING: no check is made to verify if the slave effectively | |
1290 | * belongs to <bond>. | |
1291 | * Nothing is freed on return, structures are just unchained. | |
1292 | * If any slave pointer in bond was pointing to <slave>, | |
1293 | * it should be changed by the calling function. | |
1294 | * | |
1295 | * bond->lock held for writing by caller. | |
1296 | */ | |
1297 | static void bond_detach_slave(struct bonding *bond, struct slave *slave) | |
1298 | { | |
3d632c3f | 1299 | if (slave->next) |
1da177e4 | 1300 | slave->next->prev = slave->prev; |
1da177e4 | 1301 | |
3d632c3f | 1302 | if (slave->prev) |
1da177e4 | 1303 | slave->prev->next = slave->next; |
1da177e4 LT |
1304 | |
1305 | if (bond->first_slave == slave) { /* slave is the first slave */ | |
1306 | if (bond->slave_cnt > 1) { /* there are more slave */ | |
1307 | bond->first_slave = slave->next; | |
1308 | } else { | |
1309 | bond->first_slave = NULL; /* slave was the last one */ | |
1310 | } | |
1311 | } | |
1312 | ||
1313 | slave->next = NULL; | |
1314 | slave->prev = NULL; | |
1315 | bond->slave_cnt--; | |
1316 | } | |
1317 | ||
f6dc31a8 WC |
1318 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1319 | /* | |
1320 | * You must hold read lock on bond->lock before calling this. | |
1321 | */ | |
1322 | static bool slaves_support_netpoll(struct net_device *bond_dev) | |
1323 | { | |
1324 | struct bonding *bond = netdev_priv(bond_dev); | |
1325 | struct slave *slave; | |
1326 | int i = 0; | |
1327 | bool ret = true; | |
1328 | ||
1329 | bond_for_each_slave(bond, slave, i) { | |
1330 | if ((slave->dev->priv_flags & IFF_DISABLE_NETPOLL) || | |
1331 | !slave->dev->netdev_ops->ndo_poll_controller) | |
1332 | ret = false; | |
1333 | } | |
1334 | return i != 0 && ret; | |
1335 | } | |
1336 | ||
1337 | static void bond_poll_controller(struct net_device *bond_dev) | |
1338 | { | |
c2355e1a NH |
1339 | struct bonding *bond = netdev_priv(bond_dev); |
1340 | struct slave *slave; | |
1341 | int i; | |
1342 | ||
1343 | bond_for_each_slave(bond, slave, i) { | |
1344 | if (slave->dev && IS_UP(slave->dev)) | |
1345 | netpoll_poll_dev(slave->dev); | |
1346 | } | |
f6dc31a8 WC |
1347 | } |
1348 | ||
1349 | static void bond_netpoll_cleanup(struct net_device *bond_dev) | |
1350 | { | |
1351 | struct bonding *bond = netdev_priv(bond_dev); | |
1352 | struct slave *slave; | |
1353 | const struct net_device_ops *ops; | |
1354 | int i; | |
1355 | ||
1356 | read_lock(&bond->lock); | |
1357 | bond_dev->npinfo = NULL; | |
1358 | bond_for_each_slave(bond, slave, i) { | |
1359 | if (slave->dev) { | |
1360 | ops = slave->dev->netdev_ops; | |
1361 | if (ops->ndo_netpoll_cleanup) | |
1362 | ops->ndo_netpoll_cleanup(slave->dev); | |
1363 | else | |
1364 | slave->dev->npinfo = NULL; | |
1365 | } | |
1366 | } | |
1367 | read_unlock(&bond->lock); | |
1368 | } | |
1369 | ||
1370 | #else | |
1371 | ||
1372 | static void bond_netpoll_cleanup(struct net_device *bond_dev) | |
1373 | { | |
1374 | } | |
1375 | ||
1376 | #endif | |
1377 | ||
1da177e4 LT |
1378 | /*---------------------------------- IOCTL ----------------------------------*/ |
1379 | ||
4ad072c9 AB |
1380 | static int bond_sethwaddr(struct net_device *bond_dev, |
1381 | struct net_device *slave_dev) | |
1da177e4 | 1382 | { |
5a03cdb7 HE |
1383 | pr_debug("bond_dev=%p\n", bond_dev); |
1384 | pr_debug("slave_dev=%p\n", slave_dev); | |
1385 | pr_debug("slave_dev->addr_len=%d\n", slave_dev->addr_len); | |
1da177e4 LT |
1386 | memcpy(bond_dev->dev_addr, slave_dev->dev_addr, slave_dev->addr_len); |
1387 | return 0; | |
1388 | } | |
1389 | ||
7f353bf2 HX |
1390 | #define BOND_VLAN_FEATURES \ |
1391 | (NETIF_F_VLAN_CHALLENGED | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX | \ | |
1392 | NETIF_F_HW_VLAN_FILTER) | |
8531c5ff | 1393 | |
3d632c3f | 1394 | /* |
8e3babcd | 1395 | * Compute the common dev->feature set available to all slaves. Some |
7f353bf2 HX |
1396 | * feature bits are managed elsewhere, so preserve those feature bits |
1397 | * on the master device. | |
8531c5ff AK |
1398 | */ |
1399 | static int bond_compute_features(struct bonding *bond) | |
1400 | { | |
8531c5ff AK |
1401 | struct slave *slave; |
1402 | struct net_device *bond_dev = bond->dev; | |
7f353bf2 | 1403 | unsigned long features = bond_dev->features; |
278339a4 | 1404 | unsigned long vlan_features = 0; |
3158bf7d MS |
1405 | unsigned short max_hard_header_len = max((u16)ETH_HLEN, |
1406 | bond_dev->hard_header_len); | |
8e3babcd | 1407 | int i; |
8531c5ff | 1408 | |
7f353bf2 | 1409 | features &= ~(NETIF_F_ALL_CSUM | BOND_VLAN_FEATURES); |
b63365a2 HX |
1410 | features |= NETIF_F_GSO_MASK | NETIF_F_NO_CSUM; |
1411 | ||
1412 | if (!bond->first_slave) | |
1413 | goto done; | |
1414 | ||
1415 | features &= ~NETIF_F_ONE_FOR_ALL; | |
7f353bf2 | 1416 | |
278339a4 | 1417 | vlan_features = bond->first_slave->dev->vlan_features; |
54ef3137 | 1418 | bond_for_each_slave(bond, slave, i) { |
b63365a2 HX |
1419 | features = netdev_increment_features(features, |
1420 | slave->dev->features, | |
1421 | NETIF_F_ONE_FOR_ALL); | |
278339a4 JV |
1422 | vlan_features = netdev_increment_features(vlan_features, |
1423 | slave->dev->vlan_features, | |
1424 | NETIF_F_ONE_FOR_ALL); | |
54ef3137 JV |
1425 | if (slave->dev->hard_header_len > max_hard_header_len) |
1426 | max_hard_header_len = slave->dev->hard_header_len; | |
1427 | } | |
8531c5ff | 1428 | |
b63365a2 | 1429 | done: |
7f353bf2 | 1430 | features |= (bond_dev->features & BOND_VLAN_FEATURES); |
b63365a2 | 1431 | bond_dev->features = netdev_fix_features(features, NULL); |
278339a4 | 1432 | bond_dev->vlan_features = netdev_fix_features(vlan_features, NULL); |
54ef3137 | 1433 | bond_dev->hard_header_len = max_hard_header_len; |
8531c5ff AK |
1434 | |
1435 | return 0; | |
1436 | } | |
1437 | ||
872254dd MS |
1438 | static void bond_setup_by_slave(struct net_device *bond_dev, |
1439 | struct net_device *slave_dev) | |
1440 | { | |
454d7c9b | 1441 | struct bonding *bond = netdev_priv(bond_dev); |
d90a162a | 1442 | |
00829823 | 1443 | bond_dev->header_ops = slave_dev->header_ops; |
872254dd MS |
1444 | |
1445 | bond_dev->type = slave_dev->type; | |
1446 | bond_dev->hard_header_len = slave_dev->hard_header_len; | |
1447 | bond_dev->addr_len = slave_dev->addr_len; | |
1448 | ||
1449 | memcpy(bond_dev->broadcast, slave_dev->broadcast, | |
1450 | slave_dev->addr_len); | |
d90a162a | 1451 | bond->setup_by_slave = 1; |
872254dd MS |
1452 | } |
1453 | ||
1da177e4 | 1454 | /* enslave device <slave> to bond device <master> */ |
a77b5325 | 1455 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) |
1da177e4 | 1456 | { |
454d7c9b | 1457 | struct bonding *bond = netdev_priv(bond_dev); |
eb7cc59a | 1458 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 | 1459 | struct slave *new_slave = NULL; |
22bedad3 | 1460 | struct netdev_hw_addr *ha; |
1da177e4 LT |
1461 | struct sockaddr addr; |
1462 | int link_reporting; | |
1463 | int old_features = bond_dev->features; | |
1464 | int res = 0; | |
1465 | ||
552709d5 | 1466 | if (!bond->params.use_carrier && slave_dev->ethtool_ops == NULL && |
eb7cc59a | 1467 | slave_ops->ndo_do_ioctl == NULL) { |
a4aee5c8 JP |
1468 | pr_warning("%s: Warning: no link monitoring support for %s\n", |
1469 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1470 | } |
1471 | ||
1472 | /* bond must be initialized by bond_open() before enslaving */ | |
1473 | if (!(bond_dev->flags & IFF_UP)) { | |
a4aee5c8 JP |
1474 | pr_warning("%s: master_dev is not up in bond_enslave\n", |
1475 | bond_dev->name); | |
1da177e4 LT |
1476 | } |
1477 | ||
1478 | /* already enslaved */ | |
1479 | if (slave_dev->flags & IFF_SLAVE) { | |
5a03cdb7 | 1480 | pr_debug("Error, Device was already enslaved\n"); |
1da177e4 LT |
1481 | return -EBUSY; |
1482 | } | |
1483 | ||
1484 | /* vlan challenged mutual exclusion */ | |
1485 | /* no need to lock since we're protected by rtnl_lock */ | |
1486 | if (slave_dev->features & NETIF_F_VLAN_CHALLENGED) { | |
5a03cdb7 | 1487 | pr_debug("%s: NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
f35188fa | 1488 | if (bond->vlgrp) { |
a4aee5c8 JP |
1489 | pr_err("%s: Error: cannot enslave VLAN challenged slave %s on VLAN enabled bond %s\n", |
1490 | bond_dev->name, slave_dev->name, bond_dev->name); | |
1da177e4 LT |
1491 | return -EPERM; |
1492 | } else { | |
a4aee5c8 JP |
1493 | pr_warning("%s: Warning: enslaved VLAN challenged slave %s. Adding VLANs will be blocked as long as %s is part of bond %s\n", |
1494 | bond_dev->name, slave_dev->name, | |
1495 | slave_dev->name, bond_dev->name); | |
1da177e4 LT |
1496 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
1497 | } | |
1498 | } else { | |
5a03cdb7 | 1499 | pr_debug("%s: ! NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
1da177e4 LT |
1500 | if (bond->slave_cnt == 0) { |
1501 | /* First slave, and it is not VLAN challenged, | |
1502 | * so remove the block of adding VLANs over the bond. | |
1503 | */ | |
1504 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; | |
1505 | } | |
1506 | } | |
1507 | ||
217df670 JV |
1508 | /* |
1509 | * Old ifenslave binaries are no longer supported. These can | |
3d632c3f | 1510 | * be identified with moderate accuracy by the state of the slave: |
217df670 JV |
1511 | * the current ifenslave will set the interface down prior to |
1512 | * enslaving it; the old ifenslave will not. | |
1513 | */ | |
1514 | if ((slave_dev->flags & IFF_UP)) { | |
a4aee5c8 | 1515 | pr_err("%s is up. This may be due to an out of date ifenslave.\n", |
217df670 JV |
1516 | slave_dev->name); |
1517 | res = -EPERM; | |
1518 | goto err_undo_flags; | |
1519 | } | |
1da177e4 | 1520 | |
872254dd MS |
1521 | /* set bonding device ether type by slave - bonding netdevices are |
1522 | * created with ether_setup, so when the slave type is not ARPHRD_ETHER | |
1523 | * there is a need to override some of the type dependent attribs/funcs. | |
1524 | * | |
1525 | * bond ether type mutual exclusion - don't allow slaves of dissimilar | |
1526 | * ether type (eg ARPHRD_ETHER and ARPHRD_INFINIBAND) share the same bond | |
1527 | */ | |
1528 | if (bond->slave_cnt == 0) { | |
e36b9d16 | 1529 | if (bond_dev->type != slave_dev->type) { |
e36b9d16 | 1530 | pr_debug("%s: change device type from %d to %d\n", |
a4aee5c8 JP |
1531 | bond_dev->name, |
1532 | bond_dev->type, slave_dev->type); | |
75c78500 | 1533 | |
3ca5b404 JP |
1534 | res = netdev_bonding_change(bond_dev, |
1535 | NETDEV_PRE_TYPE_CHANGE); | |
1536 | res = notifier_to_errno(res); | |
1537 | if (res) { | |
1538 | pr_err("%s: refused to change device type\n", | |
1539 | bond_dev->name); | |
1540 | res = -EBUSY; | |
1541 | goto err_undo_flags; | |
1542 | } | |
75c78500 | 1543 | |
32a806c1 | 1544 | /* Flush unicast and multicast addresses */ |
a748ee24 | 1545 | dev_uc_flush(bond_dev); |
22bedad3 | 1546 | dev_mc_flush(bond_dev); |
32a806c1 | 1547 | |
e36b9d16 MS |
1548 | if (slave_dev->type != ARPHRD_ETHER) |
1549 | bond_setup_by_slave(bond_dev, slave_dev); | |
1550 | else | |
1551 | ether_setup(bond_dev); | |
75c78500 | 1552 | |
93d9b7d7 JP |
1553 | netdev_bonding_change(bond_dev, |
1554 | NETDEV_POST_TYPE_CHANGE); | |
e36b9d16 | 1555 | } |
872254dd | 1556 | } else if (bond_dev->type != slave_dev->type) { |
a4aee5c8 JP |
1557 | pr_err("%s ether type (%d) is different from other slaves (%d), can not enslave it.\n", |
1558 | slave_dev->name, | |
1559 | slave_dev->type, bond_dev->type); | |
1560 | res = -EINVAL; | |
1561 | goto err_undo_flags; | |
872254dd MS |
1562 | } |
1563 | ||
eb7cc59a | 1564 | if (slave_ops->ndo_set_mac_address == NULL) { |
2ab82852 | 1565 | if (bond->slave_cnt == 0) { |
a4aee5c8 JP |
1566 | pr_warning("%s: Warning: The first slave device specified does not support setting the MAC address. Setting fail_over_mac to active.", |
1567 | bond_dev->name); | |
3915c1e8 JV |
1568 | bond->params.fail_over_mac = BOND_FOM_ACTIVE; |
1569 | } else if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { | |
a4aee5c8 JP |
1570 | 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", |
1571 | bond_dev->name); | |
2ab82852 MS |
1572 | res = -EOPNOTSUPP; |
1573 | goto err_undo_flags; | |
1574 | } | |
1da177e4 LT |
1575 | } |
1576 | ||
c20811a7 JP |
1577 | /* If this is the first slave, then we need to set the master's hardware |
1578 | * address to be the same as the slave's. */ | |
d13a2cb6 | 1579 | if (is_zero_ether_addr(bond->dev->dev_addr)) |
c20811a7 JP |
1580 | memcpy(bond->dev->dev_addr, slave_dev->dev_addr, |
1581 | slave_dev->addr_len); | |
1582 | ||
1583 | ||
243cb4e5 | 1584 | new_slave = kzalloc(sizeof(struct slave), GFP_KERNEL); |
1da177e4 LT |
1585 | if (!new_slave) { |
1586 | res = -ENOMEM; | |
1587 | goto err_undo_flags; | |
1588 | } | |
1589 | ||
bb1d9123 AG |
1590 | /* |
1591 | * Set the new_slave's queue_id to be zero. Queue ID mapping | |
1592 | * is set via sysfs or module option if desired. | |
1593 | */ | |
1594 | new_slave->queue_id = 0; | |
1595 | ||
b15ba0fb JP |
1596 | /* Save slave's original mtu and then set it to match the bond */ |
1597 | new_slave->original_mtu = slave_dev->mtu; | |
1598 | res = dev_set_mtu(slave_dev, bond->dev->mtu); | |
1599 | if (res) { | |
1600 | pr_debug("Error %d calling dev_set_mtu\n", res); | |
1601 | goto err_free; | |
1602 | } | |
1603 | ||
217df670 JV |
1604 | /* |
1605 | * Save slave's original ("permanent") mac address for modes | |
1606 | * that need it, and for restoring it upon release, and then | |
1607 | * set it to the master's address | |
1608 | */ | |
1609 | memcpy(new_slave->perm_hwaddr, slave_dev->dev_addr, ETH_ALEN); | |
1da177e4 | 1610 | |
dd957c57 | 1611 | if (!bond->params.fail_over_mac) { |
2ab82852 MS |
1612 | /* |
1613 | * Set slave to master's mac address. The application already | |
1614 | * set the master's mac address to that of the first slave | |
1615 | */ | |
1616 | memcpy(addr.sa_data, bond_dev->dev_addr, bond_dev->addr_len); | |
1617 | addr.sa_family = slave_dev->type; | |
1618 | res = dev_set_mac_address(slave_dev, &addr); | |
1619 | if (res) { | |
5a03cdb7 | 1620 | pr_debug("Error %d calling set_mac_address\n", res); |
b15ba0fb | 1621 | goto err_restore_mtu; |
2ab82852 | 1622 | } |
217df670 | 1623 | } |
1da177e4 | 1624 | |
c2edacf8 JV |
1625 | res = netdev_set_master(slave_dev, bond_dev); |
1626 | if (res) { | |
5a03cdb7 | 1627 | pr_debug("Error %d calling netdev_set_master\n", res); |
569f0c4d | 1628 | goto err_restore_mac; |
c2edacf8 | 1629 | } |
217df670 JV |
1630 | /* open the slave since the application closed it */ |
1631 | res = dev_open(slave_dev); | |
1632 | if (res) { | |
3d632c3f | 1633 | pr_debug("Opening slave %s failed\n", slave_dev->name); |
569f0c4d | 1634 | goto err_unset_master; |
1da177e4 LT |
1635 | } |
1636 | ||
1da177e4 | 1637 | new_slave->dev = slave_dev; |
0b680e75 | 1638 | slave_dev->priv_flags |= IFF_BONDING; |
1da177e4 | 1639 | |
58402054 | 1640 | if (bond_is_lb(bond)) { |
1da177e4 LT |
1641 | /* bond_alb_init_slave() must be called before all other stages since |
1642 | * it might fail and we do not want to have to undo everything | |
1643 | */ | |
1644 | res = bond_alb_init_slave(bond, new_slave); | |
3d632c3f | 1645 | if (res) |
569f0c4d | 1646 | goto err_close; |
1da177e4 LT |
1647 | } |
1648 | ||
1649 | /* If the mode USES_PRIMARY, then the new slave gets the | |
1650 | * master's promisc (and mc) settings only if it becomes the | |
1651 | * curr_active_slave, and that is taken care of later when calling | |
1652 | * bond_change_active() | |
1653 | */ | |
1654 | if (!USES_PRIMARY(bond->params.mode)) { | |
1655 | /* set promiscuity level to new slave */ | |
1656 | if (bond_dev->flags & IFF_PROMISC) { | |
7e1a1ac1 WC |
1657 | res = dev_set_promiscuity(slave_dev, 1); |
1658 | if (res) | |
1659 | goto err_close; | |
1da177e4 LT |
1660 | } |
1661 | ||
1662 | /* set allmulti level to new slave */ | |
1663 | if (bond_dev->flags & IFF_ALLMULTI) { | |
7e1a1ac1 WC |
1664 | res = dev_set_allmulti(slave_dev, 1); |
1665 | if (res) | |
1666 | goto err_close; | |
1da177e4 LT |
1667 | } |
1668 | ||
b9e40857 | 1669 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 1670 | /* upload master's mc_list to new slave */ |
22bedad3 JP |
1671 | netdev_for_each_mc_addr(ha, bond_dev) |
1672 | dev_mc_add(slave_dev, ha->addr); | |
b9e40857 | 1673 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
1674 | } |
1675 | ||
1676 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1677 | /* add lacpdu mc addr to mc list */ | |
1678 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; | |
1679 | ||
22bedad3 | 1680 | dev_mc_add(slave_dev, lacpdu_multicast); |
1da177e4 LT |
1681 | } |
1682 | ||
1683 | bond_add_vlans_on_slave(bond, slave_dev); | |
1684 | ||
1685 | write_lock_bh(&bond->lock); | |
1686 | ||
1687 | bond_attach_slave(bond, new_slave); | |
1688 | ||
1689 | new_slave->delay = 0; | |
1690 | new_slave->link_failure_count = 0; | |
1691 | ||
8531c5ff AK |
1692 | bond_compute_features(bond); |
1693 | ||
3915c1e8 JV |
1694 | write_unlock_bh(&bond->lock); |
1695 | ||
1696 | read_lock(&bond->lock); | |
1697 | ||
f5b2b966 JV |
1698 | new_slave->last_arp_rx = jiffies; |
1699 | ||
1da177e4 LT |
1700 | if (bond->params.miimon && !bond->params.use_carrier) { |
1701 | link_reporting = bond_check_dev_link(bond, slave_dev, 1); | |
1702 | ||
1703 | if ((link_reporting == -1) && !bond->params.arp_interval) { | |
1704 | /* | |
1705 | * miimon is set but a bonded network driver | |
1706 | * does not support ETHTOOL/MII and | |
1707 | * arp_interval is not set. Note: if | |
1708 | * use_carrier is enabled, we will never go | |
1709 | * here (because netif_carrier is always | |
1710 | * supported); thus, we don't need to change | |
1711 | * the messages for netif_carrier. | |
1712 | */ | |
a4aee5c8 | 1713 | 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 | 1714 | bond_dev->name, slave_dev->name); |
1da177e4 LT |
1715 | } else if (link_reporting == -1) { |
1716 | /* unable get link status using mii/ethtool */ | |
a4aee5c8 JP |
1717 | 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", |
1718 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1719 | } |
1720 | } | |
1721 | ||
1722 | /* check for initial state */ | |
1723 | if (!bond->params.miimon || | |
1724 | (bond_check_dev_link(bond, slave_dev, 0) == BMSR_LSTATUS)) { | |
1725 | if (bond->params.updelay) { | |
a4aee5c8 | 1726 | pr_debug("Initial state of slave_dev is BOND_LINK_BACK\n"); |
1da177e4 LT |
1727 | new_slave->link = BOND_LINK_BACK; |
1728 | new_slave->delay = bond->params.updelay; | |
1729 | } else { | |
a4aee5c8 | 1730 | pr_debug("Initial state of slave_dev is BOND_LINK_UP\n"); |
1da177e4 LT |
1731 | new_slave->link = BOND_LINK_UP; |
1732 | } | |
1733 | new_slave->jiffies = jiffies; | |
1734 | } else { | |
a4aee5c8 | 1735 | pr_debug("Initial state of slave_dev is BOND_LINK_DOWN\n"); |
1da177e4 LT |
1736 | new_slave->link = BOND_LINK_DOWN; |
1737 | } | |
1738 | ||
1739 | if (bond_update_speed_duplex(new_slave) && | |
1740 | (new_slave->link != BOND_LINK_DOWN)) { | |
a4aee5c8 JP |
1741 | pr_warning("%s: Warning: failed to get speed and duplex from %s, assumed to be 100Mb/sec and Full.\n", |
1742 | bond_dev->name, new_slave->dev->name); | |
1da177e4 LT |
1743 | |
1744 | if (bond->params.mode == BOND_MODE_8023AD) { | |
a4aee5c8 JP |
1745 | pr_warning("%s: Warning: Operation of 802.3ad mode requires ETHTOOL support in base driver for proper aggregator selection.\n", |
1746 | bond_dev->name); | |
1da177e4 LT |
1747 | } |
1748 | } | |
1749 | ||
1750 | if (USES_PRIMARY(bond->params.mode) && bond->params.primary[0]) { | |
1751 | /* if there is a primary slave, remember it */ | |
a549952a | 1752 | if (strcmp(bond->params.primary, new_slave->dev->name) == 0) { |
1da177e4 | 1753 | bond->primary_slave = new_slave; |
a549952a JP |
1754 | bond->force_primary = true; |
1755 | } | |
1da177e4 LT |
1756 | } |
1757 | ||
3915c1e8 JV |
1758 | write_lock_bh(&bond->curr_slave_lock); |
1759 | ||
1da177e4 LT |
1760 | switch (bond->params.mode) { |
1761 | case BOND_MODE_ACTIVEBACKUP: | |
8a8e447b JV |
1762 | bond_set_slave_inactive_flags(new_slave); |
1763 | bond_select_active_slave(bond); | |
1da177e4 LT |
1764 | break; |
1765 | case BOND_MODE_8023AD: | |
1766 | /* in 802.3ad mode, the internal mechanism | |
1767 | * will activate the slaves in the selected | |
1768 | * aggregator | |
1769 | */ | |
1770 | bond_set_slave_inactive_flags(new_slave); | |
1771 | /* if this is the first slave */ | |
1772 | if (bond->slave_cnt == 1) { | |
1773 | SLAVE_AD_INFO(new_slave).id = 1; | |
1774 | /* Initialize AD with the number of times that the AD timer is called in 1 second | |
1775 | * can be called only after the mac address of the bond is set | |
1776 | */ | |
1777 | bond_3ad_initialize(bond, 1000/AD_TIMER_INTERVAL, | |
1778 | bond->params.lacp_fast); | |
1779 | } else { | |
1780 | SLAVE_AD_INFO(new_slave).id = | |
1781 | SLAVE_AD_INFO(new_slave->prev).id + 1; | |
1782 | } | |
1783 | ||
1784 | bond_3ad_bind_slave(new_slave); | |
1785 | break; | |
1786 | case BOND_MODE_TLB: | |
1787 | case BOND_MODE_ALB: | |
1788 | new_slave->state = BOND_STATE_ACTIVE; | |
059fe7a5 | 1789 | bond_set_slave_inactive_flags(new_slave); |
5a29f789 | 1790 | bond_select_active_slave(bond); |
1da177e4 LT |
1791 | break; |
1792 | default: | |
5a03cdb7 | 1793 | pr_debug("This slave is always active in trunk mode\n"); |
1da177e4 LT |
1794 | |
1795 | /* always active in trunk mode */ | |
1796 | new_slave->state = BOND_STATE_ACTIVE; | |
1797 | ||
1798 | /* In trunking mode there is little meaning to curr_active_slave | |
1799 | * anyway (it holds no special properties of the bond device), | |
1800 | * so we can change it without calling change_active_interface() | |
1801 | */ | |
3d632c3f | 1802 | if (!bond->curr_active_slave) |
1da177e4 | 1803 | bond->curr_active_slave = new_slave; |
3d632c3f | 1804 | |
1da177e4 LT |
1805 | break; |
1806 | } /* switch(bond_mode) */ | |
1807 | ||
3915c1e8 JV |
1808 | write_unlock_bh(&bond->curr_slave_lock); |
1809 | ||
ff59c456 JV |
1810 | bond_set_carrier(bond); |
1811 | ||
f6dc31a8 | 1812 | #ifdef CONFIG_NET_POLL_CONTROLLER |
45b0cb8a NH |
1813 | if (slaves_support_netpoll(bond_dev)) { |
1814 | bond_dev->priv_flags &= ~IFF_DISABLE_NETPOLL; | |
1815 | if (bond_dev->npinfo) | |
1816 | slave_dev->npinfo = bond_dev->npinfo; | |
1817 | } else if (!(bond_dev->priv_flags & IFF_DISABLE_NETPOLL)) { | |
f6dc31a8 | 1818 | bond_dev->priv_flags |= IFF_DISABLE_NETPOLL; |
45b0cb8a NH |
1819 | pr_info("New slave device %s does not support netpoll\n", |
1820 | slave_dev->name); | |
1821 | pr_info("Disabling netpoll support for %s\n", bond_dev->name); | |
f6dc31a8 WC |
1822 | } |
1823 | #endif | |
3915c1e8 | 1824 | read_unlock(&bond->lock); |
1da177e4 | 1825 | |
b76cdba9 MW |
1826 | res = bond_create_slave_symlinks(bond_dev, slave_dev); |
1827 | if (res) | |
569f0c4d | 1828 | goto err_close; |
b76cdba9 | 1829 | |
a4aee5c8 JP |
1830 | pr_info("%s: enslaving %s as a%s interface with a%s link.\n", |
1831 | bond_dev->name, slave_dev->name, | |
1832 | new_slave->state == BOND_STATE_ACTIVE ? "n active" : " backup", | |
1833 | new_slave->link != BOND_LINK_DOWN ? "n up" : " down"); | |
1da177e4 LT |
1834 | |
1835 | /* enslave is successful */ | |
1836 | return 0; | |
1837 | ||
1838 | /* Undo stages on error */ | |
1da177e4 LT |
1839 | err_close: |
1840 | dev_close(slave_dev); | |
1841 | ||
569f0c4d JV |
1842 | err_unset_master: |
1843 | netdev_set_master(slave_dev, NULL); | |
1844 | ||
1da177e4 | 1845 | err_restore_mac: |
dd957c57 | 1846 | if (!bond->params.fail_over_mac) { |
3915c1e8 JV |
1847 | /* XXX TODO - fom follow mode needs to change master's |
1848 | * MAC if this slave's MAC is in use by the bond, or at | |
1849 | * least print a warning. | |
1850 | */ | |
2ab82852 MS |
1851 | memcpy(addr.sa_data, new_slave->perm_hwaddr, ETH_ALEN); |
1852 | addr.sa_family = slave_dev->type; | |
1853 | dev_set_mac_address(slave_dev, &addr); | |
1854 | } | |
1da177e4 | 1855 | |
b15ba0fb JP |
1856 | err_restore_mtu: |
1857 | dev_set_mtu(slave_dev, new_slave->original_mtu); | |
1858 | ||
1da177e4 LT |
1859 | err_free: |
1860 | kfree(new_slave); | |
1861 | ||
1862 | err_undo_flags: | |
1863 | bond_dev->features = old_features; | |
3d632c3f | 1864 | |
1da177e4 LT |
1865 | return res; |
1866 | } | |
1867 | ||
1868 | /* | |
1869 | * Try to release the slave device <slave> from the bond device <master> | |
1870 | * It is legal to access curr_active_slave without a lock because all the function | |
1871 | * is write-locked. | |
1872 | * | |
1873 | * The rules for slave state should be: | |
1874 | * for Active/Backup: | |
1875 | * Active stays on all backups go down | |
1876 | * for Bonded connections: | |
1877 | * The first up interface should be left on and all others downed. | |
1878 | */ | |
a77b5325 | 1879 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev) |
1da177e4 | 1880 | { |
454d7c9b | 1881 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
1882 | struct slave *slave, *oldcurrent; |
1883 | struct sockaddr addr; | |
1da177e4 LT |
1884 | |
1885 | /* slave is not a slave or master is not master of this slave */ | |
1886 | if (!(slave_dev->flags & IFF_SLAVE) || | |
1887 | (slave_dev->master != bond_dev)) { | |
a4aee5c8 | 1888 | pr_err("%s: Error: cannot release %s.\n", |
1da177e4 LT |
1889 | bond_dev->name, slave_dev->name); |
1890 | return -EINVAL; | |
1891 | } | |
1892 | ||
e843fa50 | 1893 | block_netpoll_tx(); |
f6dc31a8 | 1894 | netdev_bonding_change(bond_dev, NETDEV_BONDING_DESLAVE); |
1da177e4 LT |
1895 | write_lock_bh(&bond->lock); |
1896 | ||
1897 | slave = bond_get_slave_by_dev(bond, slave_dev); | |
1898 | if (!slave) { | |
1899 | /* not a slave of this bond */ | |
a4aee5c8 JP |
1900 | pr_info("%s: %s not enslaved\n", |
1901 | bond_dev->name, slave_dev->name); | |
f5e2a7b2 | 1902 | write_unlock_bh(&bond->lock); |
e843fa50 | 1903 | unblock_netpoll_tx(); |
1da177e4 LT |
1904 | return -EINVAL; |
1905 | } | |
1906 | ||
3915c1e8 | 1907 | if (!bond->params.fail_over_mac) { |
8e95a202 JP |
1908 | if (!compare_ether_addr(bond_dev->dev_addr, slave->perm_hwaddr) && |
1909 | bond->slave_cnt > 1) | |
a4aee5c8 JP |
1910 | 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", |
1911 | bond_dev->name, slave_dev->name, | |
1912 | slave->perm_hwaddr, | |
1913 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1914 | } |
1915 | ||
1916 | /* Inform AD package of unbinding of slave. */ | |
1917 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1918 | /* must be called before the slave is | |
1919 | * detached from the list | |
1920 | */ | |
1921 | bond_3ad_unbind_slave(slave); | |
1922 | } | |
1923 | ||
a4aee5c8 JP |
1924 | pr_info("%s: releasing %s interface %s\n", |
1925 | bond_dev->name, | |
1926 | (slave->state == BOND_STATE_ACTIVE) ? "active" : "backup", | |
1927 | slave_dev->name); | |
1da177e4 LT |
1928 | |
1929 | oldcurrent = bond->curr_active_slave; | |
1930 | ||
1931 | bond->current_arp_slave = NULL; | |
1932 | ||
1933 | /* release the slave from its bond */ | |
1934 | bond_detach_slave(bond, slave); | |
1935 | ||
8531c5ff AK |
1936 | bond_compute_features(bond); |
1937 | ||
3d632c3f | 1938 | if (bond->primary_slave == slave) |
1da177e4 | 1939 | bond->primary_slave = NULL; |
1da177e4 | 1940 | |
3d632c3f | 1941 | if (oldcurrent == slave) |
1da177e4 | 1942 | bond_change_active_slave(bond, NULL); |
1da177e4 | 1943 | |
58402054 | 1944 | if (bond_is_lb(bond)) { |
1da177e4 LT |
1945 | /* Must be called only after the slave has been |
1946 | * detached from the list and the curr_active_slave | |
1947 | * has been cleared (if our_slave == old_current), | |
1948 | * but before a new active slave is selected. | |
1949 | */ | |
2543331d | 1950 | write_unlock_bh(&bond->lock); |
1da177e4 | 1951 | bond_alb_deinit_slave(bond, slave); |
2543331d | 1952 | write_lock_bh(&bond->lock); |
1da177e4 LT |
1953 | } |
1954 | ||
059fe7a5 JV |
1955 | if (oldcurrent == slave) { |
1956 | /* | |
1957 | * Note that we hold RTNL over this sequence, so there | |
1958 | * is no concern that another slave add/remove event | |
1959 | * will interfere. | |
1960 | */ | |
1961 | write_unlock_bh(&bond->lock); | |
1962 | read_lock(&bond->lock); | |
1963 | write_lock_bh(&bond->curr_slave_lock); | |
1964 | ||
1da177e4 LT |
1965 | bond_select_active_slave(bond); |
1966 | ||
059fe7a5 JV |
1967 | write_unlock_bh(&bond->curr_slave_lock); |
1968 | read_unlock(&bond->lock); | |
1969 | write_lock_bh(&bond->lock); | |
1970 | } | |
1971 | ||
1da177e4 | 1972 | if (bond->slave_cnt == 0) { |
ff59c456 JV |
1973 | bond_set_carrier(bond); |
1974 | ||
1da177e4 LT |
1975 | /* if the last slave was removed, zero the mac address |
1976 | * of the master so it will be set by the application | |
1977 | * to the mac address of the first slave | |
1978 | */ | |
1979 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); | |
1980 | ||
f35188fa | 1981 | if (!bond->vlgrp) { |
1da177e4 LT |
1982 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
1983 | } else { | |
a4aee5c8 JP |
1984 | pr_warning("%s: Warning: clearing HW address of %s while it still has VLANs.\n", |
1985 | bond_dev->name, bond_dev->name); | |
1986 | pr_warning("%s: When re-adding slaves, make sure the bond's HW address matches its VLANs'.\n", | |
1987 | bond_dev->name); | |
1da177e4 LT |
1988 | } |
1989 | } else if ((bond_dev->features & NETIF_F_VLAN_CHALLENGED) && | |
1990 | !bond_has_challenged_slaves(bond)) { | |
a4aee5c8 JP |
1991 | pr_info("%s: last VLAN challenged slave %s left bond %s. VLAN blocking is removed\n", |
1992 | bond_dev->name, slave_dev->name, bond_dev->name); | |
1da177e4 LT |
1993 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; |
1994 | } | |
1995 | ||
1996 | write_unlock_bh(&bond->lock); | |
e843fa50 | 1997 | unblock_netpoll_tx(); |
1da177e4 | 1998 | |
b76cdba9 MW |
1999 | /* must do this from outside any spinlocks */ |
2000 | bond_destroy_slave_symlinks(bond_dev, slave_dev); | |
2001 | ||
1da177e4 LT |
2002 | bond_del_vlans_from_slave(bond, slave_dev); |
2003 | ||
2004 | /* If the mode USES_PRIMARY, then we should only remove its | |
2005 | * promisc and mc settings if it was the curr_active_slave, but that was | |
2006 | * already taken care of above when we detached the slave | |
2007 | */ | |
2008 | if (!USES_PRIMARY(bond->params.mode)) { | |
2009 | /* unset promiscuity level from slave */ | |
3d632c3f | 2010 | if (bond_dev->flags & IFF_PROMISC) |
1da177e4 | 2011 | dev_set_promiscuity(slave_dev, -1); |
1da177e4 LT |
2012 | |
2013 | /* unset allmulti level from slave */ | |
3d632c3f | 2014 | if (bond_dev->flags & IFF_ALLMULTI) |
1da177e4 | 2015 | dev_set_allmulti(slave_dev, -1); |
1da177e4 LT |
2016 | |
2017 | /* flush master's mc_list from slave */ | |
b9e40857 | 2018 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 2019 | bond_mc_list_flush(bond_dev, slave_dev); |
b9e40857 | 2020 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
2021 | } |
2022 | ||
2023 | netdev_set_master(slave_dev, NULL); | |
2024 | ||
f6dc31a8 WC |
2025 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2026 | read_lock_bh(&bond->lock); | |
c22d7ac8 | 2027 | |
45b0cb8a NH |
2028 | if (slaves_support_netpoll(bond_dev)) |
2029 | bond_dev->priv_flags &= ~IFF_DISABLE_NETPOLL; | |
f6dc31a8 WC |
2030 | read_unlock_bh(&bond->lock); |
2031 | if (slave_dev->netdev_ops->ndo_netpoll_cleanup) | |
2032 | slave_dev->netdev_ops->ndo_netpoll_cleanup(slave_dev); | |
2033 | else | |
2034 | slave_dev->npinfo = NULL; | |
2035 | #endif | |
2036 | ||
1da177e4 LT |
2037 | /* close slave before restoring its mac address */ |
2038 | dev_close(slave_dev); | |
2039 | ||
3915c1e8 | 2040 | if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { |
2ab82852 MS |
2041 | /* restore original ("permanent") mac address */ |
2042 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); | |
2043 | addr.sa_family = slave_dev->type; | |
2044 | dev_set_mac_address(slave_dev, &addr); | |
2045 | } | |
1da177e4 | 2046 | |
b15ba0fb JP |
2047 | dev_set_mtu(slave_dev, slave->original_mtu); |
2048 | ||
8f903c70 | 2049 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
f5b2b966 JV |
2050 | IFF_SLAVE_INACTIVE | IFF_BONDING | |
2051 | IFF_SLAVE_NEEDARP); | |
1da177e4 LT |
2052 | |
2053 | kfree(slave); | |
2054 | ||
2055 | return 0; /* deletion OK */ | |
2056 | } | |
2057 | ||
d90a162a | 2058 | /* |
3d632c3f | 2059 | * First release a slave and than destroy the bond if no more slaves are left. |
d90a162a MS |
2060 | * Must be under rtnl_lock when this function is called. |
2061 | */ | |
26d8ee75 | 2062 | static int bond_release_and_destroy(struct net_device *bond_dev, |
2063 | struct net_device *slave_dev) | |
d90a162a | 2064 | { |
454d7c9b | 2065 | struct bonding *bond = netdev_priv(bond_dev); |
d90a162a MS |
2066 | int ret; |
2067 | ||
2068 | ret = bond_release(bond_dev, slave_dev); | |
2069 | if ((ret == 0) && (bond->slave_cnt == 0)) { | |
a4aee5c8 JP |
2070 | pr_info("%s: destroying bond %s.\n", |
2071 | bond_dev->name, bond_dev->name); | |
9e71626c | 2072 | unregister_netdevice(bond_dev); |
d90a162a MS |
2073 | } |
2074 | return ret; | |
2075 | } | |
2076 | ||
1da177e4 LT |
2077 | /* |
2078 | * This function releases all slaves. | |
2079 | */ | |
2080 | static int bond_release_all(struct net_device *bond_dev) | |
2081 | { | |
454d7c9b | 2082 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2083 | struct slave *slave; |
2084 | struct net_device *slave_dev; | |
2085 | struct sockaddr addr; | |
2086 | ||
2087 | write_lock_bh(&bond->lock); | |
2088 | ||
ff59c456 JV |
2089 | netif_carrier_off(bond_dev); |
2090 | ||
3d632c3f | 2091 | if (bond->slave_cnt == 0) |
1da177e4 | 2092 | goto out; |
1da177e4 LT |
2093 | |
2094 | bond->current_arp_slave = NULL; | |
2095 | bond->primary_slave = NULL; | |
2096 | bond_change_active_slave(bond, NULL); | |
2097 | ||
2098 | while ((slave = bond->first_slave) != NULL) { | |
2099 | /* Inform AD package of unbinding of slave | |
2100 | * before slave is detached from the list. | |
2101 | */ | |
3d632c3f | 2102 | if (bond->params.mode == BOND_MODE_8023AD) |
1da177e4 | 2103 | bond_3ad_unbind_slave(slave); |
1da177e4 LT |
2104 | |
2105 | slave_dev = slave->dev; | |
2106 | bond_detach_slave(bond, slave); | |
2107 | ||
2543331d JV |
2108 | /* now that the slave is detached, unlock and perform |
2109 | * all the undo steps that should not be called from | |
2110 | * within a lock. | |
2111 | */ | |
2112 | write_unlock_bh(&bond->lock); | |
2113 | ||
58402054 | 2114 | if (bond_is_lb(bond)) { |
1da177e4 LT |
2115 | /* must be called only after the slave |
2116 | * has been detached from the list | |
2117 | */ | |
2118 | bond_alb_deinit_slave(bond, slave); | |
2119 | } | |
2120 | ||
8531c5ff AK |
2121 | bond_compute_features(bond); |
2122 | ||
b76cdba9 | 2123 | bond_destroy_slave_symlinks(bond_dev, slave_dev); |
1da177e4 LT |
2124 | bond_del_vlans_from_slave(bond, slave_dev); |
2125 | ||
2126 | /* If the mode USES_PRIMARY, then we should only remove its | |
2127 | * promisc and mc settings if it was the curr_active_slave, but that was | |
2128 | * already taken care of above when we detached the slave | |
2129 | */ | |
2130 | if (!USES_PRIMARY(bond->params.mode)) { | |
2131 | /* unset promiscuity level from slave */ | |
3d632c3f | 2132 | if (bond_dev->flags & IFF_PROMISC) |
1da177e4 | 2133 | dev_set_promiscuity(slave_dev, -1); |
1da177e4 LT |
2134 | |
2135 | /* unset allmulti level from slave */ | |
3d632c3f | 2136 | if (bond_dev->flags & IFF_ALLMULTI) |
1da177e4 | 2137 | dev_set_allmulti(slave_dev, -1); |
1da177e4 LT |
2138 | |
2139 | /* flush master's mc_list from slave */ | |
b9e40857 | 2140 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 2141 | bond_mc_list_flush(bond_dev, slave_dev); |
b9e40857 | 2142 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
2143 | } |
2144 | ||
2145 | netdev_set_master(slave_dev, NULL); | |
2146 | ||
2147 | /* close slave before restoring its mac address */ | |
2148 | dev_close(slave_dev); | |
2149 | ||
dd957c57 | 2150 | if (!bond->params.fail_over_mac) { |
2ab82852 MS |
2151 | /* restore original ("permanent") mac address*/ |
2152 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); | |
2153 | addr.sa_family = slave_dev->type; | |
2154 | dev_set_mac_address(slave_dev, &addr); | |
2155 | } | |
1da177e4 | 2156 | |
8f903c70 JV |
2157 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
2158 | IFF_SLAVE_INACTIVE); | |
1da177e4 LT |
2159 | |
2160 | kfree(slave); | |
2161 | ||
2162 | /* re-acquire the lock before getting the next slave */ | |
2163 | write_lock_bh(&bond->lock); | |
2164 | } | |
2165 | ||
2166 | /* zero the mac address of the master so it will be | |
2167 | * set by the application to the mac address of the | |
2168 | * first slave | |
2169 | */ | |
2170 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); | |
2171 | ||
f35188fa | 2172 | if (!bond->vlgrp) { |
1da177e4 | 2173 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
f35188fa | 2174 | } else { |
a4aee5c8 JP |
2175 | pr_warning("%s: Warning: clearing HW address of %s while it still has VLANs.\n", |
2176 | bond_dev->name, bond_dev->name); | |
2177 | pr_warning("%s: When re-adding slaves, make sure the bond's HW address matches its VLANs'.\n", | |
2178 | bond_dev->name); | |
1da177e4 LT |
2179 | } |
2180 | ||
a4aee5c8 | 2181 | pr_info("%s: released all slaves\n", bond_dev->name); |
1da177e4 LT |
2182 | |
2183 | out: | |
2184 | write_unlock_bh(&bond->lock); | |
1da177e4 LT |
2185 | return 0; |
2186 | } | |
2187 | ||
2188 | /* | |
2189 | * This function changes the active slave to slave <slave_dev>. | |
2190 | * It returns -EINVAL in the following cases. | |
2191 | * - <slave_dev> is not found in the list. | |
2192 | * - There is not active slave now. | |
2193 | * - <slave_dev> is already active. | |
2194 | * - The link state of <slave_dev> is not BOND_LINK_UP. | |
2195 | * - <slave_dev> is not running. | |
3d632c3f SH |
2196 | * In these cases, this function does nothing. |
2197 | * In the other cases, current_slave pointer is changed and 0 is returned. | |
1da177e4 LT |
2198 | */ |
2199 | static int bond_ioctl_change_active(struct net_device *bond_dev, struct net_device *slave_dev) | |
2200 | { | |
454d7c9b | 2201 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2202 | struct slave *old_active = NULL; |
2203 | struct slave *new_active = NULL; | |
2204 | int res = 0; | |
2205 | ||
3d632c3f | 2206 | if (!USES_PRIMARY(bond->params.mode)) |
1da177e4 | 2207 | return -EINVAL; |
1da177e4 LT |
2208 | |
2209 | /* Verify that master_dev is indeed the master of slave_dev */ | |
3d632c3f | 2210 | if (!(slave_dev->flags & IFF_SLAVE) || (slave_dev->master != bond_dev)) |
1da177e4 | 2211 | return -EINVAL; |
1da177e4 | 2212 | |
059fe7a5 | 2213 | read_lock(&bond->lock); |
1da177e4 | 2214 | |
059fe7a5 | 2215 | read_lock(&bond->curr_slave_lock); |
1da177e4 | 2216 | old_active = bond->curr_active_slave; |
059fe7a5 JV |
2217 | read_unlock(&bond->curr_slave_lock); |
2218 | ||
1da177e4 LT |
2219 | new_active = bond_get_slave_by_dev(bond, slave_dev); |
2220 | ||
2221 | /* | |
2222 | * Changing to the current active: do nothing; return success. | |
2223 | */ | |
2224 | if (new_active && (new_active == old_active)) { | |
059fe7a5 | 2225 | read_unlock(&bond->lock); |
1da177e4 LT |
2226 | return 0; |
2227 | } | |
2228 | ||
2229 | if ((new_active) && | |
2230 | (old_active) && | |
2231 | (new_active->link == BOND_LINK_UP) && | |
2232 | IS_UP(new_active->dev)) { | |
e843fa50 | 2233 | block_netpoll_tx(); |
059fe7a5 | 2234 | write_lock_bh(&bond->curr_slave_lock); |
1da177e4 | 2235 | bond_change_active_slave(bond, new_active); |
059fe7a5 | 2236 | write_unlock_bh(&bond->curr_slave_lock); |
e843fa50 | 2237 | unblock_netpoll_tx(); |
3d632c3f | 2238 | } else |
1da177e4 | 2239 | res = -EINVAL; |
1da177e4 | 2240 | |
059fe7a5 | 2241 | read_unlock(&bond->lock); |
1da177e4 LT |
2242 | |
2243 | return res; | |
2244 | } | |
2245 | ||
1da177e4 LT |
2246 | static int bond_info_query(struct net_device *bond_dev, struct ifbond *info) |
2247 | { | |
454d7c9b | 2248 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2249 | |
2250 | info->bond_mode = bond->params.mode; | |
2251 | info->miimon = bond->params.miimon; | |
2252 | ||
6603a6f2 | 2253 | read_lock(&bond->lock); |
1da177e4 | 2254 | info->num_slaves = bond->slave_cnt; |
6603a6f2 | 2255 | read_unlock(&bond->lock); |
1da177e4 LT |
2256 | |
2257 | return 0; | |
2258 | } | |
2259 | ||
2260 | static int bond_slave_info_query(struct net_device *bond_dev, struct ifslave *info) | |
2261 | { | |
454d7c9b | 2262 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 2263 | struct slave *slave; |
689c96cc | 2264 | int i, res = -ENODEV; |
1da177e4 | 2265 | |
6603a6f2 | 2266 | read_lock(&bond->lock); |
1da177e4 LT |
2267 | |
2268 | bond_for_each_slave(bond, slave, i) { | |
2269 | if (i == (int)info->slave_id) { | |
689c96cc ED |
2270 | res = 0; |
2271 | strcpy(info->slave_name, slave->dev->name); | |
2272 | info->link = slave->link; | |
2273 | info->state = slave->state; | |
2274 | info->link_failure_count = slave->link_failure_count; | |
1da177e4 LT |
2275 | break; |
2276 | } | |
2277 | } | |
2278 | ||
6603a6f2 | 2279 | read_unlock(&bond->lock); |
1da177e4 | 2280 | |
689c96cc | 2281 | return res; |
1da177e4 LT |
2282 | } |
2283 | ||
2284 | /*-------------------------------- Monitoring -------------------------------*/ | |
2285 | ||
1da177e4 | 2286 | |
f0c76d61 JV |
2287 | static int bond_miimon_inspect(struct bonding *bond) |
2288 | { | |
2289 | struct slave *slave; | |
2290 | int i, link_state, commit = 0; | |
41f89100 JP |
2291 | bool ignore_updelay; |
2292 | ||
2293 | ignore_updelay = !bond->curr_active_slave ? true : false; | |
1da177e4 LT |
2294 | |
2295 | bond_for_each_slave(bond, slave, i) { | |
f0c76d61 | 2296 | slave->new_link = BOND_LINK_NOCHANGE; |
1da177e4 | 2297 | |
f0c76d61 | 2298 | link_state = bond_check_dev_link(bond, slave->dev, 0); |
1da177e4 LT |
2299 | |
2300 | switch (slave->link) { | |
f0c76d61 JV |
2301 | case BOND_LINK_UP: |
2302 | if (link_state) | |
2303 | continue; | |
1da177e4 | 2304 | |
f0c76d61 JV |
2305 | slave->link = BOND_LINK_FAIL; |
2306 | slave->delay = bond->params.downdelay; | |
2307 | if (slave->delay) { | |
a4aee5c8 JP |
2308 | pr_info("%s: link status down for %sinterface %s, disabling it in %d ms.\n", |
2309 | bond->dev->name, | |
2310 | (bond->params.mode == | |
2311 | BOND_MODE_ACTIVEBACKUP) ? | |
2312 | ((slave->state == BOND_STATE_ACTIVE) ? | |
2313 | "active " : "backup ") : "", | |
2314 | slave->dev->name, | |
2315 | bond->params.downdelay * bond->params.miimon); | |
1da177e4 | 2316 | } |
f0c76d61 JV |
2317 | /*FALLTHRU*/ |
2318 | case BOND_LINK_FAIL: | |
2319 | if (link_state) { | |
2320 | /* | |
2321 | * recovered before downdelay expired | |
2322 | */ | |
2323 | slave->link = BOND_LINK_UP; | |
1da177e4 | 2324 | slave->jiffies = jiffies; |
a4aee5c8 JP |
2325 | pr_info("%s: link status up again after %d ms for interface %s.\n", |
2326 | bond->dev->name, | |
2327 | (bond->params.downdelay - slave->delay) * | |
2328 | bond->params.miimon, | |
2329 | slave->dev->name); | |
f0c76d61 | 2330 | continue; |
1da177e4 | 2331 | } |
f0c76d61 JV |
2332 | |
2333 | if (slave->delay <= 0) { | |
2334 | slave->new_link = BOND_LINK_DOWN; | |
2335 | commit++; | |
2336 | continue; | |
1da177e4 | 2337 | } |
1da177e4 | 2338 | |
f0c76d61 JV |
2339 | slave->delay--; |
2340 | break; | |
2341 | ||
2342 | case BOND_LINK_DOWN: | |
2343 | if (!link_state) | |
2344 | continue; | |
2345 | ||
2346 | slave->link = BOND_LINK_BACK; | |
2347 | slave->delay = bond->params.updelay; | |
2348 | ||
2349 | if (slave->delay) { | |
a4aee5c8 JP |
2350 | pr_info("%s: link status up for interface %s, enabling it in %d ms.\n", |
2351 | bond->dev->name, slave->dev->name, | |
2352 | ignore_updelay ? 0 : | |
2353 | bond->params.updelay * | |
2354 | bond->params.miimon); | |
f0c76d61 JV |
2355 | } |
2356 | /*FALLTHRU*/ | |
2357 | case BOND_LINK_BACK: | |
2358 | if (!link_state) { | |
2359 | slave->link = BOND_LINK_DOWN; | |
a4aee5c8 JP |
2360 | pr_info("%s: link status down again after %d ms for interface %s.\n", |
2361 | bond->dev->name, | |
2362 | (bond->params.updelay - slave->delay) * | |
2363 | bond->params.miimon, | |
2364 | slave->dev->name); | |
f0c76d61 JV |
2365 | |
2366 | continue; | |
2367 | } | |
2368 | ||
41f89100 JP |
2369 | if (ignore_updelay) |
2370 | slave->delay = 0; | |
2371 | ||
f0c76d61 JV |
2372 | if (slave->delay <= 0) { |
2373 | slave->new_link = BOND_LINK_UP; | |
2374 | commit++; | |
41f89100 | 2375 | ignore_updelay = false; |
f0c76d61 | 2376 | continue; |
1da177e4 | 2377 | } |
f0c76d61 JV |
2378 | |
2379 | slave->delay--; | |
1da177e4 | 2380 | break; |
f0c76d61 JV |
2381 | } |
2382 | } | |
1da177e4 | 2383 | |
f0c76d61 JV |
2384 | return commit; |
2385 | } | |
1da177e4 | 2386 | |
f0c76d61 JV |
2387 | static void bond_miimon_commit(struct bonding *bond) |
2388 | { | |
2389 | struct slave *slave; | |
2390 | int i; | |
2391 | ||
2392 | bond_for_each_slave(bond, slave, i) { | |
2393 | switch (slave->new_link) { | |
2394 | case BOND_LINK_NOCHANGE: | |
2395 | continue; | |
1da177e4 | 2396 | |
f0c76d61 JV |
2397 | case BOND_LINK_UP: |
2398 | slave->link = BOND_LINK_UP; | |
2399 | slave->jiffies = jiffies; | |
2400 | ||
2401 | if (bond->params.mode == BOND_MODE_8023AD) { | |
2402 | /* prevent it from being the active one */ | |
2403 | slave->state = BOND_STATE_BACKUP; | |
2404 | } else if (bond->params.mode != BOND_MODE_ACTIVEBACKUP) { | |
2405 | /* make it immediately active */ | |
2406 | slave->state = BOND_STATE_ACTIVE; | |
2407 | } else if (slave != bond->primary_slave) { | |
2408 | /* prevent it from being the active one */ | |
2409 | slave->state = BOND_STATE_BACKUP; | |
1da177e4 | 2410 | } |
1da177e4 | 2411 | |
546add79 KPO |
2412 | bond_update_speed_duplex(slave); |
2413 | ||
700c2a77 KPO |
2414 | pr_info("%s: link status definitely up for interface %s, %d Mbps %s duplex.\n", |
2415 | bond->dev->name, slave->dev->name, | |
2416 | slave->speed, slave->duplex ? "full" : "half"); | |
1da177e4 | 2417 | |
f0c76d61 JV |
2418 | /* notify ad that the link status has changed */ |
2419 | if (bond->params.mode == BOND_MODE_8023AD) | |
2420 | bond_3ad_handle_link_change(slave, BOND_LINK_UP); | |
059fe7a5 | 2421 | |
58402054 | 2422 | if (bond_is_lb(bond)) |
f0c76d61 JV |
2423 | bond_alb_handle_link_change(bond, slave, |
2424 | BOND_LINK_UP); | |
1da177e4 | 2425 | |
f0c76d61 JV |
2426 | if (!bond->curr_active_slave || |
2427 | (slave == bond->primary_slave)) | |
2428 | goto do_failover; | |
1da177e4 | 2429 | |
f0c76d61 | 2430 | continue; |
059fe7a5 | 2431 | |
f0c76d61 | 2432 | case BOND_LINK_DOWN: |
fba4acda JV |
2433 | if (slave->link_failure_count < UINT_MAX) |
2434 | slave->link_failure_count++; | |
2435 | ||
f0c76d61 | 2436 | slave->link = BOND_LINK_DOWN; |
1da177e4 | 2437 | |
f0c76d61 JV |
2438 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP || |
2439 | bond->params.mode == BOND_MODE_8023AD) | |
2440 | bond_set_slave_inactive_flags(slave); | |
2441 | ||
a4aee5c8 JP |
2442 | pr_info("%s: link status definitely down for interface %s, disabling it\n", |
2443 | bond->dev->name, slave->dev->name); | |
f0c76d61 JV |
2444 | |
2445 | if (bond->params.mode == BOND_MODE_8023AD) | |
2446 | bond_3ad_handle_link_change(slave, | |
2447 | BOND_LINK_DOWN); | |
2448 | ||
ae63e808 | 2449 | if (bond_is_lb(bond)) |
f0c76d61 JV |
2450 | bond_alb_handle_link_change(bond, slave, |
2451 | BOND_LINK_DOWN); | |
2452 | ||
2453 | if (slave == bond->curr_active_slave) | |
2454 | goto do_failover; | |
2455 | ||
2456 | continue; | |
2457 | ||
2458 | default: | |
a4aee5c8 | 2459 | pr_err("%s: invalid new link %d on slave %s\n", |
f0c76d61 JV |
2460 | bond->dev->name, slave->new_link, |
2461 | slave->dev->name); | |
2462 | slave->new_link = BOND_LINK_NOCHANGE; | |
2463 | ||
2464 | continue; | |
2465 | } | |
2466 | ||
2467 | do_failover: | |
2468 | ASSERT_RTNL(); | |
e843fa50 | 2469 | block_netpoll_tx(); |
f0c76d61 JV |
2470 | write_lock_bh(&bond->curr_slave_lock); |
2471 | bond_select_active_slave(bond); | |
2472 | write_unlock_bh(&bond->curr_slave_lock); | |
e843fa50 | 2473 | unblock_netpoll_tx(); |
f0c76d61 JV |
2474 | } |
2475 | ||
2476 | bond_set_carrier(bond); | |
1da177e4 LT |
2477 | } |
2478 | ||
0b0eef66 JV |
2479 | /* |
2480 | * bond_mii_monitor | |
2481 | * | |
2482 | * Really a wrapper that splits the mii monitor into two phases: an | |
f0c76d61 JV |
2483 | * inspection, then (if inspection indicates something needs to be done) |
2484 | * an acquisition of appropriate locks followed by a commit phase to | |
2485 | * implement whatever link state changes are indicated. | |
0b0eef66 JV |
2486 | */ |
2487 | void bond_mii_monitor(struct work_struct *work) | |
2488 | { | |
2489 | struct bonding *bond = container_of(work, struct bonding, | |
2490 | mii_work.work); | |
0b0eef66 JV |
2491 | |
2492 | read_lock(&bond->lock); | |
f0c76d61 JV |
2493 | if (bond->kill_timers) |
2494 | goto out; | |
2495 | ||
2496 | if (bond->slave_cnt == 0) | |
2497 | goto re_arm; | |
b59f9f74 JV |
2498 | |
2499 | if (bond->send_grat_arp) { | |
2500 | read_lock(&bond->curr_slave_lock); | |
2501 | bond_send_gratuitous_arp(bond); | |
2502 | read_unlock(&bond->curr_slave_lock); | |
2503 | } | |
2504 | ||
305d552a BH |
2505 | if (bond->send_unsol_na) { |
2506 | read_lock(&bond->curr_slave_lock); | |
2507 | bond_send_unsolicited_na(bond); | |
2508 | read_unlock(&bond->curr_slave_lock); | |
2509 | } | |
2510 | ||
f0c76d61 | 2511 | if (bond_miimon_inspect(bond)) { |
0b0eef66 JV |
2512 | read_unlock(&bond->lock); |
2513 | rtnl_lock(); | |
2514 | read_lock(&bond->lock); | |
f0c76d61 JV |
2515 | |
2516 | bond_miimon_commit(bond); | |
2517 | ||
5655662d JV |
2518 | read_unlock(&bond->lock); |
2519 | rtnl_unlock(); /* might sleep, hold no other locks */ | |
2520 | read_lock(&bond->lock); | |
0b0eef66 JV |
2521 | } |
2522 | ||
f0c76d61 JV |
2523 | re_arm: |
2524 | if (bond->params.miimon) | |
2525 | queue_delayed_work(bond->wq, &bond->mii_work, | |
2526 | msecs_to_jiffies(bond->params.miimon)); | |
2527 | out: | |
0b0eef66 | 2528 | read_unlock(&bond->lock); |
0b0eef66 | 2529 | } |
c3ade5ca | 2530 | |
d3bb52b0 | 2531 | static __be32 bond_glean_dev_ip(struct net_device *dev) |
c3ade5ca JV |
2532 | { |
2533 | struct in_device *idev; | |
2534 | struct in_ifaddr *ifa; | |
a144ea4b | 2535 | __be32 addr = 0; |
c3ade5ca JV |
2536 | |
2537 | if (!dev) | |
2538 | return 0; | |
2539 | ||
2540 | rcu_read_lock(); | |
e5ed6399 | 2541 | idev = __in_dev_get_rcu(dev); |
c3ade5ca JV |
2542 | if (!idev) |
2543 | goto out; | |
2544 | ||
2545 | ifa = idev->ifa_list; | |
2546 | if (!ifa) | |
2547 | goto out; | |
2548 | ||
2549 | addr = ifa->ifa_local; | |
2550 | out: | |
2551 | rcu_read_unlock(); | |
2552 | return addr; | |
2553 | } | |
2554 | ||
d3bb52b0 | 2555 | static int bond_has_this_ip(struct bonding *bond, __be32 ip) |
f5b2b966 | 2556 | { |
0883beca | 2557 | struct vlan_entry *vlan; |
f5b2b966 JV |
2558 | |
2559 | if (ip == bond->master_ip) | |
2560 | return 1; | |
2561 | ||
0883beca | 2562 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
f5b2b966 JV |
2563 | if (ip == vlan->vlan_ip) |
2564 | return 1; | |
2565 | } | |
2566 | ||
2567 | return 0; | |
2568 | } | |
2569 | ||
c3ade5ca JV |
2570 | /* |
2571 | * We go to the (large) trouble of VLAN tagging ARP frames because | |
2572 | * switches in VLAN mode (especially if ports are configured as | |
2573 | * "native" to a VLAN) might not pass non-tagged frames. | |
2574 | */ | |
d3bb52b0 | 2575 | 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 |
2576 | { |
2577 | struct sk_buff *skb; | |
2578 | ||
5a03cdb7 | 2579 | pr_debug("arp %d on slave %s: dst %x src %x vid %d\n", arp_op, |
a4aee5c8 | 2580 | slave_dev->name, dest_ip, src_ip, vlan_id); |
3d632c3f | 2581 | |
c3ade5ca JV |
2582 | skb = arp_create(arp_op, ETH_P_ARP, dest_ip, slave_dev, src_ip, |
2583 | NULL, slave_dev->dev_addr, NULL); | |
2584 | ||
2585 | if (!skb) { | |
a4aee5c8 | 2586 | pr_err("ARP packet allocation failed\n"); |
c3ade5ca JV |
2587 | return; |
2588 | } | |
2589 | if (vlan_id) { | |
2590 | skb = vlan_put_tag(skb, vlan_id); | |
2591 | if (!skb) { | |
a4aee5c8 | 2592 | pr_err("failed to insert VLAN tag\n"); |
c3ade5ca JV |
2593 | return; |
2594 | } | |
2595 | } | |
2596 | arp_xmit(skb); | |
2597 | } | |
2598 | ||
2599 | ||
1da177e4 LT |
2600 | static void bond_arp_send_all(struct bonding *bond, struct slave *slave) |
2601 | { | |
c3ade5ca | 2602 | int i, vlan_id, rv; |
d3bb52b0 | 2603 | __be32 *targets = bond->params.arp_targets; |
0883beca | 2604 | struct vlan_entry *vlan; |
c3ade5ca JV |
2605 | struct net_device *vlan_dev; |
2606 | struct flowi fl; | |
2607 | struct rtable *rt; | |
1da177e4 | 2608 | |
6b780567 MW |
2609 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
2610 | if (!targets[i]) | |
5a31bec0 | 2611 | break; |
5a03cdb7 | 2612 | pr_debug("basa: target %x\n", targets[i]); |
f35188fa | 2613 | if (!bond->vlgrp) { |
5a03cdb7 | 2614 | pr_debug("basa: empty vlan: arp_send\n"); |
c3ade5ca JV |
2615 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2616 | bond->master_ip, 0); | |
2617 | continue; | |
2618 | } | |
2619 | ||
2620 | /* | |
2621 | * If VLANs are configured, we do a route lookup to | |
2622 | * determine which VLAN interface would be used, so we | |
2623 | * can tag the ARP with the proper VLAN tag. | |
2624 | */ | |
2625 | memset(&fl, 0, sizeof(fl)); | |
2626 | fl.fl4_dst = targets[i]; | |
2627 | fl.fl4_tos = RTO_ONLINK; | |
2628 | ||
ec87fd3b | 2629 | rv = ip_route_output_key(dev_net(bond->dev), &rt, &fl); |
c3ade5ca JV |
2630 | if (rv) { |
2631 | if (net_ratelimit()) { | |
a4aee5c8 JP |
2632 | pr_warning("%s: no route to arp_ip_target %pI4\n", |
2633 | bond->dev->name, &fl.fl4_dst); | |
c3ade5ca JV |
2634 | } |
2635 | continue; | |
2636 | } | |
2637 | ||
2638 | /* | |
2639 | * This target is not on a VLAN | |
2640 | */ | |
d8d1f30b | 2641 | if (rt->dst.dev == bond->dev) { |
ed4b9f80 | 2642 | ip_rt_put(rt); |
5a03cdb7 | 2643 | pr_debug("basa: rtdev == bond->dev: arp_send\n"); |
c3ade5ca JV |
2644 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2645 | bond->master_ip, 0); | |
2646 | continue; | |
2647 | } | |
2648 | ||
2649 | vlan_id = 0; | |
0883beca | 2650 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
5c15bdec | 2651 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
d8d1f30b | 2652 | if (vlan_dev == rt->dst.dev) { |
c3ade5ca | 2653 | vlan_id = vlan->vlan_id; |
5a03cdb7 | 2654 | pr_debug("basa: vlan match on %s %d\n", |
c3ade5ca JV |
2655 | vlan_dev->name, vlan_id); |
2656 | break; | |
2657 | } | |
2658 | } | |
2659 | ||
2660 | if (vlan_id) { | |
ed4b9f80 | 2661 | ip_rt_put(rt); |
c3ade5ca JV |
2662 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2663 | vlan->vlan_ip, vlan_id); | |
2664 | continue; | |
2665 | } | |
2666 | ||
2667 | if (net_ratelimit()) { | |
a4aee5c8 JP |
2668 | pr_warning("%s: no path to arp_ip_target %pI4 via rt.dev %s\n", |
2669 | bond->dev->name, &fl.fl4_dst, | |
d8d1f30b | 2670 | rt->dst.dev ? rt->dst.dev->name : "NULL"); |
c3ade5ca | 2671 | } |
ed4b9f80 | 2672 | ip_rt_put(rt); |
c3ade5ca JV |
2673 | } |
2674 | } | |
2675 | ||
2676 | /* | |
2677 | * Kick out a gratuitous ARP for an IP on the bonding master plus one | |
2678 | * for each VLAN above us. | |
b59f9f74 JV |
2679 | * |
2680 | * Caller must hold curr_slave_lock for read or better | |
c3ade5ca JV |
2681 | */ |
2682 | static void bond_send_gratuitous_arp(struct bonding *bond) | |
2683 | { | |
2684 | struct slave *slave = bond->curr_active_slave; | |
2685 | struct vlan_entry *vlan; | |
2686 | struct net_device *vlan_dev; | |
2687 | ||
a4aee5c8 JP |
2688 | pr_debug("bond_send_grat_arp: bond %s slave %s\n", |
2689 | bond->dev->name, slave ? slave->dev->name : "NULL"); | |
b59f9f74 JV |
2690 | |
2691 | if (!slave || !bond->send_grat_arp || | |
2692 | test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state)) | |
c3ade5ca JV |
2693 | return; |
2694 | ||
b59f9f74 JV |
2695 | bond->send_grat_arp--; |
2696 | ||
c3ade5ca JV |
2697 | if (bond->master_ip) { |
2698 | bond_arp_send(slave->dev, ARPOP_REPLY, bond->master_ip, | |
1053f62c | 2699 | bond->master_ip, 0); |
c3ade5ca JV |
2700 | } |
2701 | ||
f35188fa JV |
2702 | if (!bond->vlgrp) |
2703 | return; | |
2704 | ||
c3ade5ca | 2705 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
5c15bdec | 2706 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
2707 | if (vlan->vlan_ip) { |
2708 | bond_arp_send(slave->dev, ARPOP_REPLY, vlan->vlan_ip, | |
2709 | vlan->vlan_ip, vlan->vlan_id); | |
2710 | } | |
1da177e4 LT |
2711 | } |
2712 | } | |
2713 | ||
d3bb52b0 | 2714 | static void bond_validate_arp(struct bonding *bond, struct slave *slave, __be32 sip, __be32 tip) |
f5b2b966 JV |
2715 | { |
2716 | int i; | |
d3bb52b0 | 2717 | __be32 *targets = bond->params.arp_targets; |
f5b2b966 | 2718 | |
f5b2b966 | 2719 | for (i = 0; (i < BOND_MAX_ARP_TARGETS) && targets[i]; i++) { |
5a03cdb7 | 2720 | pr_debug("bva: sip %pI4 tip %pI4 t[%d] %pI4 bhti(tip) %d\n", |
a4aee5c8 JP |
2721 | &sip, &tip, i, &targets[i], |
2722 | bond_has_this_ip(bond, tip)); | |
f5b2b966 JV |
2723 | if (sip == targets[i]) { |
2724 | if (bond_has_this_ip(bond, tip)) | |
2725 | slave->last_arp_rx = jiffies; | |
2726 | return; | |
2727 | } | |
2728 | } | |
2729 | } | |
2730 | ||
2731 | static int bond_arp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev) | |
2732 | { | |
2733 | struct arphdr *arp; | |
2734 | struct slave *slave; | |
2735 | struct bonding *bond; | |
2736 | unsigned char *arp_ptr; | |
d3bb52b0 | 2737 | __be32 sip, tip; |
f5b2b966 | 2738 | |
1f3c8804 AG |
2739 | if (dev->priv_flags & IFF_802_1Q_VLAN) { |
2740 | /* | |
2741 | * When using VLANS and bonding, dev and oriv_dev may be | |
2742 | * incorrect if the physical interface supports VLAN | |
2743 | * acceleration. With this change ARP validation now | |
2744 | * works for hosts only reachable on the VLAN interface. | |
2745 | */ | |
2746 | dev = vlan_dev_real_dev(dev); | |
2747 | orig_dev = dev_get_by_index_rcu(dev_net(skb->dev),skb->skb_iif); | |
2748 | } | |
2749 | ||
f5b2b966 JV |
2750 | if (!(dev->priv_flags & IFF_BONDING) || !(dev->flags & IFF_MASTER)) |
2751 | goto out; | |
2752 | ||
454d7c9b | 2753 | bond = netdev_priv(dev); |
f5b2b966 JV |
2754 | read_lock(&bond->lock); |
2755 | ||
5a03cdb7 | 2756 | pr_debug("bond_arp_rcv: bond %s skb->dev %s orig_dev %s\n", |
a4aee5c8 JP |
2757 | bond->dev->name, skb->dev ? skb->dev->name : "NULL", |
2758 | orig_dev ? orig_dev->name : "NULL"); | |
f5b2b966 JV |
2759 | |
2760 | slave = bond_get_slave_by_dev(bond, orig_dev); | |
2761 | if (!slave || !slave_do_arp_validate(bond, slave)) | |
2762 | goto out_unlock; | |
2763 | ||
988b7050 | 2764 | if (!pskb_may_pull(skb, arp_hdr_len(dev))) |
f5b2b966 JV |
2765 | goto out_unlock; |
2766 | ||
d0a92be0 | 2767 | arp = arp_hdr(skb); |
f5b2b966 JV |
2768 | if (arp->ar_hln != dev->addr_len || |
2769 | skb->pkt_type == PACKET_OTHERHOST || | |
2770 | skb->pkt_type == PACKET_LOOPBACK || | |
2771 | arp->ar_hrd != htons(ARPHRD_ETHER) || | |
2772 | arp->ar_pro != htons(ETH_P_IP) || | |
2773 | arp->ar_pln != 4) | |
2774 | goto out_unlock; | |
2775 | ||
2776 | arp_ptr = (unsigned char *)(arp + 1); | |
2777 | arp_ptr += dev->addr_len; | |
2778 | memcpy(&sip, arp_ptr, 4); | |
2779 | arp_ptr += 4 + dev->addr_len; | |
2780 | memcpy(&tip, arp_ptr, 4); | |
2781 | ||
5a03cdb7 | 2782 | pr_debug("bond_arp_rcv: %s %s/%d av %d sv %d sip %pI4 tip %pI4\n", |
a4aee5c8 JP |
2783 | bond->dev->name, slave->dev->name, slave->state, |
2784 | bond->params.arp_validate, slave_do_arp_validate(bond, slave), | |
2785 | &sip, &tip); | |
f5b2b966 JV |
2786 | |
2787 | /* | |
2788 | * Backup slaves won't see the ARP reply, but do come through | |
2789 | * here for each ARP probe (so we swap the sip/tip to validate | |
2790 | * the probe). In a "redundant switch, common router" type of | |
2791 | * configuration, the ARP probe will (hopefully) travel from | |
2792 | * the active, through one switch, the router, then the other | |
2793 | * switch before reaching the backup. | |
2794 | */ | |
2795 | if (slave->state == BOND_STATE_ACTIVE) | |
2796 | bond_validate_arp(bond, slave, sip, tip); | |
2797 | else | |
2798 | bond_validate_arp(bond, slave, tip, sip); | |
2799 | ||
2800 | out_unlock: | |
2801 | read_unlock(&bond->lock); | |
2802 | out: | |
2803 | dev_kfree_skb(skb); | |
2804 | return NET_RX_SUCCESS; | |
2805 | } | |
2806 | ||
1da177e4 LT |
2807 | /* |
2808 | * this function is called regularly to monitor each slave's link | |
2809 | * ensuring that traffic is being sent and received when arp monitoring | |
2810 | * is used in load-balancing mode. if the adapter has been dormant, then an | |
2811 | * arp is transmitted to generate traffic. see activebackup_arp_monitor for | |
2812 | * arp monitoring in active backup mode. | |
2813 | */ | |
1b76b316 | 2814 | void bond_loadbalance_arp_mon(struct work_struct *work) |
1da177e4 | 2815 | { |
1b76b316 JV |
2816 | struct bonding *bond = container_of(work, struct bonding, |
2817 | arp_work.work); | |
1da177e4 LT |
2818 | struct slave *slave, *oldcurrent; |
2819 | int do_failover = 0; | |
2820 | int delta_in_ticks; | |
2821 | int i; | |
2822 | ||
2823 | read_lock(&bond->lock); | |
2824 | ||
5ce0da8f | 2825 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
1da177e4 | 2826 | |
3d632c3f | 2827 | if (bond->kill_timers) |
1da177e4 | 2828 | goto out; |
1da177e4 | 2829 | |
3d632c3f | 2830 | if (bond->slave_cnt == 0) |
1da177e4 | 2831 | goto re_arm; |
1da177e4 LT |
2832 | |
2833 | read_lock(&bond->curr_slave_lock); | |
2834 | oldcurrent = bond->curr_active_slave; | |
2835 | read_unlock(&bond->curr_slave_lock); | |
2836 | ||
2837 | /* see if any of the previous devices are up now (i.e. they have | |
2838 | * xmt and rcv traffic). the curr_active_slave does not come into | |
2839 | * the picture unless it is null. also, slave->jiffies is not needed | |
2840 | * here because we send an arp on each slave and give a slave as | |
2841 | * long as it needs to get the tx/rx within the delta. | |
2842 | * TODO: what about up/down delay in arp mode? it wasn't here before | |
2843 | * so it can wait | |
2844 | */ | |
2845 | bond_for_each_slave(bond, slave, i) { | |
cb32f2a0 JB |
2846 | unsigned long trans_start = dev_trans_start(slave->dev); |
2847 | ||
1da177e4 | 2848 | if (slave->link != BOND_LINK_UP) { |
cb32f2a0 JB |
2849 | if (time_in_range(jiffies, |
2850 | trans_start - delta_in_ticks, | |
2851 | trans_start + delta_in_ticks) && | |
2852 | time_in_range(jiffies, | |
2853 | slave->dev->last_rx - delta_in_ticks, | |
2854 | slave->dev->last_rx + delta_in_ticks)) { | |
1da177e4 LT |
2855 | |
2856 | slave->link = BOND_LINK_UP; | |
2857 | slave->state = BOND_STATE_ACTIVE; | |
2858 | ||
2859 | /* primary_slave has no meaning in round-robin | |
2860 | * mode. the window of a slave being up and | |
2861 | * curr_active_slave being null after enslaving | |
2862 | * is closed. | |
2863 | */ | |
2864 | if (!oldcurrent) { | |
a4aee5c8 JP |
2865 | pr_info("%s: link status definitely up for interface %s, ", |
2866 | bond->dev->name, | |
2867 | slave->dev->name); | |
1da177e4 LT |
2868 | do_failover = 1; |
2869 | } else { | |
a4aee5c8 JP |
2870 | pr_info("%s: interface %s is now up\n", |
2871 | bond->dev->name, | |
2872 | slave->dev->name); | |
1da177e4 LT |
2873 | } |
2874 | } | |
2875 | } else { | |
2876 | /* slave->link == BOND_LINK_UP */ | |
2877 | ||
2878 | /* not all switches will respond to an arp request | |
2879 | * when the source ip is 0, so don't take the link down | |
2880 | * if we don't know our ip yet | |
2881 | */ | |
cb32f2a0 JB |
2882 | if (!time_in_range(jiffies, |
2883 | trans_start - delta_in_ticks, | |
2884 | trans_start + 2 * delta_in_ticks) || | |
2885 | !time_in_range(jiffies, | |
2886 | slave->dev->last_rx - delta_in_ticks, | |
2887 | slave->dev->last_rx + 2 * delta_in_ticks)) { | |
1da177e4 LT |
2888 | |
2889 | slave->link = BOND_LINK_DOWN; | |
2890 | slave->state = BOND_STATE_BACKUP; | |
2891 | ||
3d632c3f | 2892 | if (slave->link_failure_count < UINT_MAX) |
1da177e4 | 2893 | slave->link_failure_count++; |
1da177e4 | 2894 | |
a4aee5c8 JP |
2895 | pr_info("%s: interface %s is now down.\n", |
2896 | bond->dev->name, | |
2897 | slave->dev->name); | |
1da177e4 | 2898 | |
3d632c3f | 2899 | if (slave == oldcurrent) |
1da177e4 | 2900 | do_failover = 1; |
1da177e4 LT |
2901 | } |
2902 | } | |
2903 | ||
2904 | /* note: if switch is in round-robin mode, all links | |
2905 | * must tx arp to ensure all links rx an arp - otherwise | |
2906 | * links may oscillate or not come up at all; if switch is | |
2907 | * in something like xor mode, there is nothing we can | |
2908 | * do - all replies will be rx'ed on same link causing slaves | |
2909 | * to be unstable during low/no traffic periods | |
2910 | */ | |
3d632c3f | 2911 | if (IS_UP(slave->dev)) |
1da177e4 | 2912 | bond_arp_send_all(bond, slave); |
1da177e4 LT |
2913 | } |
2914 | ||
2915 | if (do_failover) { | |
e843fa50 | 2916 | block_netpoll_tx(); |
059fe7a5 | 2917 | write_lock_bh(&bond->curr_slave_lock); |
1da177e4 LT |
2918 | |
2919 | bond_select_active_slave(bond); | |
2920 | ||
059fe7a5 | 2921 | write_unlock_bh(&bond->curr_slave_lock); |
e843fa50 | 2922 | unblock_netpoll_tx(); |
1da177e4 LT |
2923 | } |
2924 | ||
2925 | re_arm: | |
1b76b316 JV |
2926 | if (bond->params.arp_interval) |
2927 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); | |
1da177e4 LT |
2928 | out: |
2929 | read_unlock(&bond->lock); | |
2930 | } | |
2931 | ||
2932 | /* | |
b2220cad JV |
2933 | * Called to inspect slaves for active-backup mode ARP monitor link state |
2934 | * changes. Sets new_link in slaves to specify what action should take | |
2935 | * place for the slave. Returns 0 if no changes are found, >0 if changes | |
2936 | * to link states must be committed. | |
2937 | * | |
2938 | * Called with bond->lock held for read. | |
1da177e4 | 2939 | */ |
b2220cad | 2940 | static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks) |
1da177e4 | 2941 | { |
1da177e4 | 2942 | struct slave *slave; |
b2220cad | 2943 | int i, commit = 0; |
cb32f2a0 | 2944 | unsigned long trans_start; |
1da177e4 | 2945 | |
b2220cad JV |
2946 | bond_for_each_slave(bond, slave, i) { |
2947 | slave->new_link = BOND_LINK_NOCHANGE; | |
1da177e4 | 2948 | |
b2220cad | 2949 | if (slave->link != BOND_LINK_UP) { |
cb32f2a0 JB |
2950 | if (time_in_range(jiffies, |
2951 | slave_last_rx(bond, slave) - delta_in_ticks, | |
2952 | slave_last_rx(bond, slave) + delta_in_ticks)) { | |
2953 | ||
b2220cad JV |
2954 | slave->new_link = BOND_LINK_UP; |
2955 | commit++; | |
2956 | } | |
1da177e4 | 2957 | |
b2220cad JV |
2958 | continue; |
2959 | } | |
1da177e4 | 2960 | |
b2220cad JV |
2961 | /* |
2962 | * Give slaves 2*delta after being enslaved or made | |
2963 | * active. This avoids bouncing, as the last receive | |
2964 | * times need a full ARP monitor cycle to be updated. | |
2965 | */ | |
cb32f2a0 JB |
2966 | if (time_in_range(jiffies, |
2967 | slave->jiffies - delta_in_ticks, | |
2968 | slave->jiffies + 2 * delta_in_ticks)) | |
b2220cad JV |
2969 | continue; |
2970 | ||
2971 | /* | |
2972 | * Backup slave is down if: | |
2973 | * - No current_arp_slave AND | |
2974 | * - more than 3*delta since last receive AND | |
2975 | * - the bond has an IP address | |
2976 | * | |
2977 | * Note: a non-null current_arp_slave indicates | |
2978 | * the curr_active_slave went down and we are | |
2979 | * searching for a new one; under this condition | |
2980 | * we only take the curr_active_slave down - this | |
2981 | * gives each slave a chance to tx/rx traffic | |
2982 | * before being taken out | |
2983 | */ | |
2984 | if (slave->state == BOND_STATE_BACKUP && | |
2985 | !bond->current_arp_slave && | |
cb32f2a0 JB |
2986 | !time_in_range(jiffies, |
2987 | slave_last_rx(bond, slave) - delta_in_ticks, | |
2988 | slave_last_rx(bond, slave) + 3 * delta_in_ticks)) { | |
2989 | ||
b2220cad JV |
2990 | slave->new_link = BOND_LINK_DOWN; |
2991 | commit++; | |
2992 | } | |
2993 | ||
2994 | /* | |
2995 | * Active slave is down if: | |
2996 | * - more than 2*delta since transmitting OR | |
2997 | * - (more than 2*delta since receive AND | |
2998 | * the bond has an IP address) | |
2999 | */ | |
cb32f2a0 | 3000 | trans_start = dev_trans_start(slave->dev); |
b2220cad | 3001 | if ((slave->state == BOND_STATE_ACTIVE) && |
cb32f2a0 JB |
3002 | (!time_in_range(jiffies, |
3003 | trans_start - delta_in_ticks, | |
3004 | trans_start + 2 * delta_in_ticks) || | |
3005 | !time_in_range(jiffies, | |
3006 | slave_last_rx(bond, slave) - delta_in_ticks, | |
3007 | slave_last_rx(bond, slave) + 2 * delta_in_ticks))) { | |
3008 | ||
b2220cad JV |
3009 | slave->new_link = BOND_LINK_DOWN; |
3010 | commit++; | |
3011 | } | |
1da177e4 LT |
3012 | } |
3013 | ||
b2220cad JV |
3014 | return commit; |
3015 | } | |
1da177e4 | 3016 | |
b2220cad JV |
3017 | /* |
3018 | * Called to commit link state changes noted by inspection step of | |
3019 | * active-backup mode ARP monitor. | |
3020 | * | |
3021 | * Called with RTNL and bond->lock for read. | |
3022 | */ | |
3023 | static void bond_ab_arp_commit(struct bonding *bond, int delta_in_ticks) | |
3024 | { | |
3025 | struct slave *slave; | |
3026 | int i; | |
cb32f2a0 | 3027 | unsigned long trans_start; |
1da177e4 | 3028 | |
b2220cad JV |
3029 | bond_for_each_slave(bond, slave, i) { |
3030 | switch (slave->new_link) { | |
3031 | case BOND_LINK_NOCHANGE: | |
3032 | continue; | |
ff59c456 | 3033 | |
b2220cad | 3034 | case BOND_LINK_UP: |
cb32f2a0 | 3035 | trans_start = dev_trans_start(slave->dev); |
b9f60253 | 3036 | if ((!bond->curr_active_slave && |
cb32f2a0 JB |
3037 | time_in_range(jiffies, |
3038 | trans_start - delta_in_ticks, | |
3039 | trans_start + delta_in_ticks)) || | |
b9f60253 | 3040 | bond->curr_active_slave != slave) { |
b2220cad | 3041 | slave->link = BOND_LINK_UP; |
b2220cad JV |
3042 | bond->current_arp_slave = NULL; |
3043 | ||
a4aee5c8 | 3044 | pr_info("%s: link status definitely up for interface %s.\n", |
b9f60253 | 3045 | bond->dev->name, slave->dev->name); |
b2220cad | 3046 | |
b9f60253 JP |
3047 | if (!bond->curr_active_slave || |
3048 | (slave == bond->primary_slave)) | |
3049 | goto do_failover; | |
1da177e4 | 3050 | |
b9f60253 | 3051 | } |
1da177e4 | 3052 | |
b9f60253 | 3053 | continue; |
1da177e4 | 3054 | |
b2220cad JV |
3055 | case BOND_LINK_DOWN: |
3056 | if (slave->link_failure_count < UINT_MAX) | |
3057 | slave->link_failure_count++; | |
3058 | ||
3059 | slave->link = BOND_LINK_DOWN; | |
b9f60253 | 3060 | bond_set_slave_inactive_flags(slave); |
b2220cad | 3061 | |
a4aee5c8 | 3062 | pr_info("%s: link status definitely down for interface %s, disabling it\n", |
b9f60253 | 3063 | bond->dev->name, slave->dev->name); |
b2220cad | 3064 | |
b9f60253 | 3065 | if (slave == bond->curr_active_slave) { |
b2220cad | 3066 | bond->current_arp_slave = NULL; |
b9f60253 | 3067 | goto do_failover; |
1da177e4 | 3068 | } |
b9f60253 JP |
3069 | |
3070 | continue; | |
b2220cad JV |
3071 | |
3072 | default: | |
a4aee5c8 | 3073 | pr_err("%s: impossible: new_link %d on slave %s\n", |
b2220cad JV |
3074 | bond->dev->name, slave->new_link, |
3075 | slave->dev->name); | |
b9f60253 | 3076 | continue; |
1da177e4 | 3077 | } |
1da177e4 | 3078 | |
b9f60253 JP |
3079 | do_failover: |
3080 | ASSERT_RTNL(); | |
e843fa50 | 3081 | block_netpoll_tx(); |
b2220cad | 3082 | write_lock_bh(&bond->curr_slave_lock); |
b9f60253 | 3083 | bond_select_active_slave(bond); |
b2220cad | 3084 | write_unlock_bh(&bond->curr_slave_lock); |
e843fa50 | 3085 | unblock_netpoll_tx(); |
b2220cad | 3086 | } |
1da177e4 | 3087 | |
b2220cad JV |
3088 | bond_set_carrier(bond); |
3089 | } | |
1da177e4 | 3090 | |
b2220cad JV |
3091 | /* |
3092 | * Send ARP probes for active-backup mode ARP monitor. | |
3093 | * | |
3094 | * Called with bond->lock held for read. | |
3095 | */ | |
3096 | static void bond_ab_arp_probe(struct bonding *bond) | |
3097 | { | |
3098 | struct slave *slave; | |
3099 | int i; | |
1da177e4 | 3100 | |
b2220cad | 3101 | read_lock(&bond->curr_slave_lock); |
1da177e4 | 3102 | |
b2220cad | 3103 | if (bond->current_arp_slave && bond->curr_active_slave) |
a4aee5c8 JP |
3104 | pr_info("PROBE: c_arp %s && cas %s BAD\n", |
3105 | bond->current_arp_slave->dev->name, | |
3106 | bond->curr_active_slave->dev->name); | |
1da177e4 | 3107 | |
b2220cad JV |
3108 | if (bond->curr_active_slave) { |
3109 | bond_arp_send_all(bond, bond->curr_active_slave); | |
3110 | read_unlock(&bond->curr_slave_lock); | |
3111 | return; | |
3112 | } | |
1da177e4 | 3113 | |
b2220cad | 3114 | read_unlock(&bond->curr_slave_lock); |
059fe7a5 | 3115 | |
b2220cad JV |
3116 | /* if we don't have a curr_active_slave, search for the next available |
3117 | * backup slave from the current_arp_slave and make it the candidate | |
3118 | * for becoming the curr_active_slave | |
3119 | */ | |
1da177e4 | 3120 | |
b2220cad JV |
3121 | if (!bond->current_arp_slave) { |
3122 | bond->current_arp_slave = bond->first_slave; | |
3123 | if (!bond->current_arp_slave) | |
3124 | return; | |
3125 | } | |
1da177e4 | 3126 | |
b2220cad | 3127 | bond_set_slave_inactive_flags(bond->current_arp_slave); |
059fe7a5 | 3128 | |
b2220cad JV |
3129 | /* search for next candidate */ |
3130 | bond_for_each_slave_from(bond, slave, i, bond->current_arp_slave->next) { | |
3131 | if (IS_UP(slave->dev)) { | |
3132 | slave->link = BOND_LINK_BACK; | |
3133 | bond_set_slave_active_flags(slave); | |
3134 | bond_arp_send_all(bond, slave); | |
1da177e4 | 3135 | slave->jiffies = jiffies; |
b2220cad JV |
3136 | bond->current_arp_slave = slave; |
3137 | break; | |
1da177e4 LT |
3138 | } |
3139 | ||
b2220cad JV |
3140 | /* if the link state is up at this point, we |
3141 | * mark it down - this can happen if we have | |
3142 | * simultaneous link failures and | |
3143 | * reselect_active_interface doesn't make this | |
3144 | * one the current slave so it is still marked | |
3145 | * up when it is actually down | |
1da177e4 | 3146 | */ |
b2220cad JV |
3147 | if (slave->link == BOND_LINK_UP) { |
3148 | slave->link = BOND_LINK_DOWN; | |
3149 | if (slave->link_failure_count < UINT_MAX) | |
3150 | slave->link_failure_count++; | |
1da177e4 | 3151 | |
b2220cad JV |
3152 | bond_set_slave_inactive_flags(slave); |
3153 | ||
a4aee5c8 JP |
3154 | pr_info("%s: backup interface %s is now down.\n", |
3155 | bond->dev->name, slave->dev->name); | |
1da177e4 | 3156 | } |
b2220cad JV |
3157 | } |
3158 | } | |
1da177e4 | 3159 | |
b2220cad JV |
3160 | void bond_activebackup_arp_mon(struct work_struct *work) |
3161 | { | |
3162 | struct bonding *bond = container_of(work, struct bonding, | |
3163 | arp_work.work); | |
3164 | int delta_in_ticks; | |
1da177e4 | 3165 | |
b2220cad | 3166 | read_lock(&bond->lock); |
1da177e4 | 3167 | |
b2220cad JV |
3168 | if (bond->kill_timers) |
3169 | goto out; | |
1da177e4 | 3170 | |
b2220cad | 3171 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
1da177e4 | 3172 | |
b2220cad JV |
3173 | if (bond->slave_cnt == 0) |
3174 | goto re_arm; | |
3175 | ||
b59f9f74 JV |
3176 | if (bond->send_grat_arp) { |
3177 | read_lock(&bond->curr_slave_lock); | |
3178 | bond_send_gratuitous_arp(bond); | |
3179 | read_unlock(&bond->curr_slave_lock); | |
3180 | } | |
3181 | ||
305d552a BH |
3182 | if (bond->send_unsol_na) { |
3183 | read_lock(&bond->curr_slave_lock); | |
3184 | bond_send_unsolicited_na(bond); | |
3185 | read_unlock(&bond->curr_slave_lock); | |
3186 | } | |
3187 | ||
b2220cad JV |
3188 | if (bond_ab_arp_inspect(bond, delta_in_ticks)) { |
3189 | read_unlock(&bond->lock); | |
3190 | rtnl_lock(); | |
3191 | read_lock(&bond->lock); | |
3192 | ||
3193 | bond_ab_arp_commit(bond, delta_in_ticks); | |
3194 | ||
3195 | read_unlock(&bond->lock); | |
3196 | rtnl_unlock(); | |
3197 | read_lock(&bond->lock); | |
1da177e4 LT |
3198 | } |
3199 | ||
b2220cad JV |
3200 | bond_ab_arp_probe(bond); |
3201 | ||
1da177e4 | 3202 | re_arm: |
3d632c3f | 3203 | if (bond->params.arp_interval) |
1b76b316 | 3204 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); |
1da177e4 LT |
3205 | out: |
3206 | read_unlock(&bond->lock); | |
3207 | } | |
3208 | ||
3209 | /*------------------------------ proc/seq_file-------------------------------*/ | |
3210 | ||
3211 | #ifdef CONFIG_PROC_FS | |
3212 | ||
1da177e4 | 3213 | static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos) |
1f78d9f9 HE |
3214 | __acquires(&dev_base_lock) |
3215 | __acquires(&bond->lock) | |
1da177e4 LT |
3216 | { |
3217 | struct bonding *bond = seq->private; | |
3218 | loff_t off = 0; | |
3219 | struct slave *slave; | |
3220 | int i; | |
3221 | ||
3222 | /* make sure the bond won't be taken away */ | |
3223 | read_lock(&dev_base_lock); | |
6603a6f2 | 3224 | read_lock(&bond->lock); |
1da177e4 | 3225 | |
3d632c3f | 3226 | if (*pos == 0) |
1da177e4 | 3227 | return SEQ_START_TOKEN; |
1da177e4 LT |
3228 | |
3229 | bond_for_each_slave(bond, slave, i) { | |
3d632c3f | 3230 | if (++off == *pos) |
1da177e4 | 3231 | return slave; |
1da177e4 LT |
3232 | } |
3233 | ||
3234 | return NULL; | |
3235 | } | |
3236 | ||
3237 | static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
3238 | { | |
3239 | struct bonding *bond = seq->private; | |
3240 | struct slave *slave = v; | |
3241 | ||
3242 | ++*pos; | |
3d632c3f | 3243 | if (v == SEQ_START_TOKEN) |
1da177e4 | 3244 | return bond->first_slave; |
1da177e4 LT |
3245 | |
3246 | slave = slave->next; | |
3247 | ||
3248 | return (slave == bond->first_slave) ? NULL : slave; | |
3249 | } | |
3250 | ||
3251 | static void bond_info_seq_stop(struct seq_file *seq, void *v) | |
1f78d9f9 HE |
3252 | __releases(&bond->lock) |
3253 | __releases(&dev_base_lock) | |
1da177e4 LT |
3254 | { |
3255 | struct bonding *bond = seq->private; | |
3256 | ||
6603a6f2 | 3257 | read_unlock(&bond->lock); |
1da177e4 LT |
3258 | read_unlock(&dev_base_lock); |
3259 | } | |
3260 | ||
3261 | static void bond_info_show_master(struct seq_file *seq) | |
3262 | { | |
3263 | struct bonding *bond = seq->private; | |
3264 | struct slave *curr; | |
4756b02f | 3265 | int i; |
1da177e4 LT |
3266 | |
3267 | read_lock(&bond->curr_slave_lock); | |
3268 | curr = bond->curr_active_slave; | |
3269 | read_unlock(&bond->curr_slave_lock); | |
3270 | ||
dd957c57 | 3271 | seq_printf(seq, "Bonding Mode: %s", |
1da177e4 LT |
3272 | bond_mode_name(bond->params.mode)); |
3273 | ||
dd957c57 JV |
3274 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP && |
3275 | bond->params.fail_over_mac) | |
3915c1e8 JV |
3276 | seq_printf(seq, " (fail_over_mac %s)", |
3277 | fail_over_mac_tbl[bond->params.fail_over_mac].modename); | |
dd957c57 JV |
3278 | |
3279 | seq_printf(seq, "\n"); | |
3280 | ||
c61b75ad MW |
3281 | if (bond->params.mode == BOND_MODE_XOR || |
3282 | bond->params.mode == BOND_MODE_8023AD) { | |
3283 | seq_printf(seq, "Transmit Hash Policy: %s (%d)\n", | |
3284 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, | |
3285 | bond->params.xmit_policy); | |
3286 | } | |
3287 | ||
1da177e4 | 3288 | if (USES_PRIMARY(bond->params.mode)) { |
a549952a | 3289 | seq_printf(seq, "Primary Slave: %s", |
0f418b2a MW |
3290 | (bond->primary_slave) ? |
3291 | bond->primary_slave->dev->name : "None"); | |
a549952a JP |
3292 | if (bond->primary_slave) |
3293 | seq_printf(seq, " (primary_reselect %s)", | |
3294 | pri_reselect_tbl[bond->params.primary_reselect].modename); | |
1da177e4 | 3295 | |
a549952a | 3296 | seq_printf(seq, "\nCurrently Active Slave: %s\n", |
1da177e4 LT |
3297 | (curr) ? curr->dev->name : "None"); |
3298 | } | |
3299 | ||
ff59c456 JV |
3300 | seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ? |
3301 | "up" : "down"); | |
1da177e4 LT |
3302 | seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon); |
3303 | seq_printf(seq, "Up Delay (ms): %d\n", | |
3304 | bond->params.updelay * bond->params.miimon); | |
3305 | seq_printf(seq, "Down Delay (ms): %d\n", | |
3306 | bond->params.downdelay * bond->params.miimon); | |
3307 | ||
4756b02f MW |
3308 | |
3309 | /* ARP information */ | |
3d632c3f SH |
3310 | if (bond->params.arp_interval > 0) { |
3311 | int printed = 0; | |
4756b02f MW |
3312 | seq_printf(seq, "ARP Polling Interval (ms): %d\n", |
3313 | bond->params.arp_interval); | |
3314 | ||
3315 | seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); | |
3316 | ||
3d632c3f | 3317 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
4756b02f | 3318 | if (!bond->params.arp_targets[i]) |
5a31bec0 | 3319 | break; |
4756b02f MW |
3320 | if (printed) |
3321 | seq_printf(seq, ","); | |
8cf14e38 | 3322 | seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); |
4756b02f MW |
3323 | printed = 1; |
3324 | } | |
3325 | seq_printf(seq, "\n"); | |
3326 | } | |
3327 | ||
1da177e4 LT |
3328 | if (bond->params.mode == BOND_MODE_8023AD) { |
3329 | struct ad_info ad_info; | |
3330 | ||
3331 | seq_puts(seq, "\n802.3ad info\n"); | |
3332 | seq_printf(seq, "LACP rate: %s\n", | |
3333 | (bond->params.lacp_fast) ? "fast" : "slow"); | |
fd989c83 JV |
3334 | seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", |
3335 | ad_select_tbl[bond->params.ad_select].modename); | |
1da177e4 LT |
3336 | |
3337 | if (bond_3ad_get_active_agg_info(bond, &ad_info)) { | |
3338 | seq_printf(seq, "bond %s has no active aggregator\n", | |
3339 | bond->dev->name); | |
3340 | } else { | |
3341 | seq_printf(seq, "Active Aggregator Info:\n"); | |
3342 | ||
3343 | seq_printf(seq, "\tAggregator ID: %d\n", | |
3344 | ad_info.aggregator_id); | |
3345 | seq_printf(seq, "\tNumber of ports: %d\n", | |
3346 | ad_info.ports); | |
3347 | seq_printf(seq, "\tActor Key: %d\n", | |
3348 | ad_info.actor_key); | |
3349 | seq_printf(seq, "\tPartner Key: %d\n", | |
3350 | ad_info.partner_key); | |
e174961c JB |
3351 | seq_printf(seq, "\tPartner Mac Address: %pM\n", |
3352 | ad_info.partner_system); | |
1da177e4 LT |
3353 | } |
3354 | } | |
3355 | } | |
3356 | ||
3d632c3f SH |
3357 | static void bond_info_show_slave(struct seq_file *seq, |
3358 | const struct slave *slave) | |
1da177e4 LT |
3359 | { |
3360 | struct bonding *bond = seq->private; | |
3361 | ||
3362 | seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); | |
3363 | seq_printf(seq, "MII Status: %s\n", | |
3364 | (slave->link == BOND_LINK_UP) ? "up" : "down"); | |
dd53df26 KO |
3365 | seq_printf(seq, "Speed: %d Mbps\n", slave->speed); |
3366 | seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half"); | |
65509645 | 3367 | seq_printf(seq, "Link Failure Count: %u\n", |
1da177e4 LT |
3368 | slave->link_failure_count); |
3369 | ||
e174961c | 3370 | seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr); |
1da177e4 LT |
3371 | |
3372 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3373 | const struct aggregator *agg | |
3374 | = SLAVE_AD_INFO(slave).port.aggregator; | |
3375 | ||
3d632c3f | 3376 | if (agg) |
1da177e4 LT |
3377 | seq_printf(seq, "Aggregator ID: %d\n", |
3378 | agg->aggregator_identifier); | |
3d632c3f | 3379 | else |
1da177e4 | 3380 | seq_puts(seq, "Aggregator ID: N/A\n"); |
1da177e4 | 3381 | } |
bb1d9123 | 3382 | seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id); |
1da177e4 LT |
3383 | } |
3384 | ||
3385 | static int bond_info_seq_show(struct seq_file *seq, void *v) | |
3386 | { | |
3387 | if (v == SEQ_START_TOKEN) { | |
3388 | seq_printf(seq, "%s\n", version); | |
3389 | bond_info_show_master(seq); | |
3d632c3f | 3390 | } else |
1da177e4 | 3391 | bond_info_show_slave(seq, v); |
1da177e4 LT |
3392 | |
3393 | return 0; | |
3394 | } | |
3395 | ||
4101dec9 | 3396 | static const struct seq_operations bond_info_seq_ops = { |
1da177e4 LT |
3397 | .start = bond_info_seq_start, |
3398 | .next = bond_info_seq_next, | |
3399 | .stop = bond_info_seq_stop, | |
3400 | .show = bond_info_seq_show, | |
3401 | }; | |
3402 | ||
3403 | static int bond_info_open(struct inode *inode, struct file *file) | |
3404 | { | |
3405 | struct seq_file *seq; | |
3406 | struct proc_dir_entry *proc; | |
3407 | int res; | |
3408 | ||
3409 | res = seq_open(file, &bond_info_seq_ops); | |
3410 | if (!res) { | |
3411 | /* recover the pointer buried in proc_dir_entry data */ | |
3412 | seq = file->private_data; | |
3413 | proc = PDE(inode); | |
3414 | seq->private = proc->data; | |
3415 | } | |
3416 | ||
3417 | return res; | |
3418 | } | |
3419 | ||
d54b1fdb | 3420 | static const struct file_operations bond_info_fops = { |
1da177e4 LT |
3421 | .owner = THIS_MODULE, |
3422 | .open = bond_info_open, | |
3423 | .read = seq_read, | |
3424 | .llseek = seq_lseek, | |
3425 | .release = seq_release, | |
3426 | }; | |
3427 | ||
38fc0026 | 3428 | static void bond_create_proc_entry(struct bonding *bond) |
1da177e4 LT |
3429 | { |
3430 | struct net_device *bond_dev = bond->dev; | |
ec87fd3b | 3431 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); |
1da177e4 | 3432 | |
ec87fd3b | 3433 | if (bn->proc_dir) { |
a95609cb | 3434 | bond->proc_entry = proc_create_data(bond_dev->name, |
ec87fd3b | 3435 | S_IRUGO, bn->proc_dir, |
a95609cb | 3436 | &bond_info_fops, bond); |
3d632c3f | 3437 | if (bond->proc_entry == NULL) |
a4aee5c8 JP |
3438 | pr_warning("Warning: Cannot create /proc/net/%s/%s\n", |
3439 | DRV_NAME, bond_dev->name); | |
3d632c3f | 3440 | else |
1da177e4 | 3441 | memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); |
1da177e4 | 3442 | } |
1da177e4 LT |
3443 | } |
3444 | ||
3445 | static void bond_remove_proc_entry(struct bonding *bond) | |
3446 | { | |
ec87fd3b EB |
3447 | struct net_device *bond_dev = bond->dev; |
3448 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); | |
3449 | ||
3450 | if (bn->proc_dir && bond->proc_entry) { | |
3451 | remove_proc_entry(bond->proc_file_name, bn->proc_dir); | |
1da177e4 LT |
3452 | memset(bond->proc_file_name, 0, IFNAMSIZ); |
3453 | bond->proc_entry = NULL; | |
3454 | } | |
3455 | } | |
3456 | ||
3457 | /* Create the bonding directory under /proc/net, if doesn't exist yet. | |
3458 | * Caller must hold rtnl_lock. | |
3459 | */ | |
2c8c1e72 | 3460 | static void __net_init bond_create_proc_dir(struct bond_net *bn) |
1da177e4 | 3461 | { |
ec87fd3b EB |
3462 | if (!bn->proc_dir) { |
3463 | bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net); | |
3464 | if (!bn->proc_dir) | |
a4aee5c8 JP |
3465 | pr_warning("Warning: cannot create /proc/net/%s\n", |
3466 | DRV_NAME); | |
1da177e4 LT |
3467 | } |
3468 | } | |
3469 | ||
3470 | /* Destroy the bonding directory under /proc/net, if empty. | |
3471 | * Caller must hold rtnl_lock. | |
3472 | */ | |
2c8c1e72 | 3473 | static void __net_exit bond_destroy_proc_dir(struct bond_net *bn) |
1da177e4 | 3474 | { |
ec87fd3b EB |
3475 | if (bn->proc_dir) { |
3476 | remove_proc_entry(DRV_NAME, bn->net->proc_net); | |
3477 | bn->proc_dir = NULL; | |
1da177e4 LT |
3478 | } |
3479 | } | |
aee64faf JP |
3480 | |
3481 | #else /* !CONFIG_PROC_FS */ | |
3482 | ||
38fc0026 | 3483 | static void bond_create_proc_entry(struct bonding *bond) |
aee64faf JP |
3484 | { |
3485 | } | |
3486 | ||
3487 | static void bond_remove_proc_entry(struct bonding *bond) | |
3488 | { | |
3489 | } | |
3490 | ||
2c8c1e72 | 3491 | static inline void bond_create_proc_dir(struct bond_net *bn) |
aee64faf JP |
3492 | { |
3493 | } | |
3494 | ||
2c8c1e72 | 3495 | static inline void bond_destroy_proc_dir(struct bond_net *bn) |
aee64faf JP |
3496 | { |
3497 | } | |
3498 | ||
1da177e4 LT |
3499 | #endif /* CONFIG_PROC_FS */ |
3500 | ||
aee64faf | 3501 | |
1da177e4 LT |
3502 | /*-------------------------- netdev event handling --------------------------*/ |
3503 | ||
3504 | /* | |
3505 | * Change device name | |
3506 | */ | |
3507 | static int bond_event_changename(struct bonding *bond) | |
3508 | { | |
1da177e4 LT |
3509 | bond_remove_proc_entry(bond); |
3510 | bond_create_proc_entry(bond); | |
7e083840 | 3511 | |
1da177e4 LT |
3512 | return NOTIFY_DONE; |
3513 | } | |
3514 | ||
3d632c3f SH |
3515 | static int bond_master_netdev_event(unsigned long event, |
3516 | struct net_device *bond_dev) | |
1da177e4 | 3517 | { |
454d7c9b | 3518 | struct bonding *event_bond = netdev_priv(bond_dev); |
1da177e4 LT |
3519 | |
3520 | switch (event) { | |
3521 | case NETDEV_CHANGENAME: | |
3522 | return bond_event_changename(event_bond); | |
1da177e4 LT |
3523 | default: |
3524 | break; | |
3525 | } | |
3526 | ||
3527 | return NOTIFY_DONE; | |
3528 | } | |
3529 | ||
3d632c3f SH |
3530 | static int bond_slave_netdev_event(unsigned long event, |
3531 | struct net_device *slave_dev) | |
1da177e4 LT |
3532 | { |
3533 | struct net_device *bond_dev = slave_dev->master; | |
454d7c9b | 3534 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3535 | |
3536 | switch (event) { | |
3537 | case NETDEV_UNREGISTER: | |
3538 | if (bond_dev) { | |
1284cd3a JV |
3539 | if (bond->setup_by_slave) |
3540 | bond_release_and_destroy(bond_dev, slave_dev); | |
3541 | else | |
3542 | bond_release(bond_dev, slave_dev); | |
1da177e4 LT |
3543 | } |
3544 | break; | |
3545 | case NETDEV_CHANGE: | |
17d04500 JV |
3546 | if (bond->params.mode == BOND_MODE_8023AD || bond_is_lb(bond)) { |
3547 | struct slave *slave; | |
3548 | ||
3549 | slave = bond_get_slave_by_dev(bond, slave_dev); | |
3550 | if (slave) { | |
3551 | u16 old_speed = slave->speed; | |
3552 | u16 old_duplex = slave->duplex; | |
3553 | ||
3554 | bond_update_speed_duplex(slave); | |
3555 | ||
3556 | if (bond_is_lb(bond)) | |
3557 | break; | |
3558 | ||
3559 | if (old_speed != slave->speed) | |
3560 | bond_3ad_adapter_speed_changed(slave); | |
3561 | if (old_duplex != slave->duplex) | |
3562 | bond_3ad_adapter_duplex_changed(slave); | |
3563 | } | |
3564 | } | |
3565 | ||
1da177e4 LT |
3566 | break; |
3567 | case NETDEV_DOWN: | |
3568 | /* | |
3569 | * ... Or is it this? | |
3570 | */ | |
3571 | break; | |
3572 | case NETDEV_CHANGEMTU: | |
3573 | /* | |
3574 | * TODO: Should slaves be allowed to | |
3575 | * independently alter their MTU? For | |
3576 | * an active-backup bond, slaves need | |
3577 | * not be the same type of device, so | |
3578 | * MTUs may vary. For other modes, | |
3579 | * slaves arguably should have the | |
3580 | * same MTUs. To do this, we'd need to | |
3581 | * take over the slave's change_mtu | |
3582 | * function for the duration of their | |
3583 | * servitude. | |
3584 | */ | |
3585 | break; | |
3586 | case NETDEV_CHANGENAME: | |
3587 | /* | |
3588 | * TODO: handle changing the primary's name | |
3589 | */ | |
3590 | break; | |
8531c5ff AK |
3591 | case NETDEV_FEAT_CHANGE: |
3592 | bond_compute_features(bond); | |
3593 | break; | |
1da177e4 LT |
3594 | default: |
3595 | break; | |
3596 | } | |
3597 | ||
3598 | return NOTIFY_DONE; | |
3599 | } | |
3600 | ||
3601 | /* | |
3602 | * bond_netdev_event: handle netdev notifier chain events. | |
3603 | * | |
3604 | * This function receives events for the netdev chain. The caller (an | |
e041c683 | 3605 | * ioctl handler calling blocking_notifier_call_chain) holds the necessary |
1da177e4 LT |
3606 | * locks for us to safely manipulate the slave devices (RTNL lock, |
3607 | * dev_probe_lock). | |
3608 | */ | |
3d632c3f SH |
3609 | static int bond_netdev_event(struct notifier_block *this, |
3610 | unsigned long event, void *ptr) | |
1da177e4 LT |
3611 | { |
3612 | struct net_device *event_dev = (struct net_device *)ptr; | |
3613 | ||
5a03cdb7 | 3614 | pr_debug("event_dev: %s, event: %lx\n", |
a4aee5c8 JP |
3615 | event_dev ? event_dev->name : "None", |
3616 | event); | |
1da177e4 | 3617 | |
0b680e75 JV |
3618 | if (!(event_dev->priv_flags & IFF_BONDING)) |
3619 | return NOTIFY_DONE; | |
3620 | ||
1da177e4 | 3621 | if (event_dev->flags & IFF_MASTER) { |
5a03cdb7 | 3622 | pr_debug("IFF_MASTER\n"); |
1da177e4 LT |
3623 | return bond_master_netdev_event(event, event_dev); |
3624 | } | |
3625 | ||
3626 | if (event_dev->flags & IFF_SLAVE) { | |
5a03cdb7 | 3627 | pr_debug("IFF_SLAVE\n"); |
1da177e4 LT |
3628 | return bond_slave_netdev_event(event, event_dev); |
3629 | } | |
3630 | ||
3631 | return NOTIFY_DONE; | |
3632 | } | |
3633 | ||
c3ade5ca JV |
3634 | /* |
3635 | * bond_inetaddr_event: handle inetaddr notifier chain events. | |
3636 | * | |
3637 | * We keep track of device IPs primarily to use as source addresses in | |
3638 | * ARP monitor probes (rather than spewing out broadcasts all the time). | |
3639 | * | |
3640 | * We track one IP for the main device (if it has one), plus one per VLAN. | |
3641 | */ | |
3642 | static int bond_inetaddr_event(struct notifier_block *this, unsigned long event, void *ptr) | |
3643 | { | |
3644 | struct in_ifaddr *ifa = ptr; | |
3645 | struct net_device *vlan_dev, *event_dev = ifa->ifa_dev->dev; | |
ec87fd3b | 3646 | struct bond_net *bn = net_generic(dev_net(event_dev), bond_net_id); |
0883beca PE |
3647 | struct bonding *bond; |
3648 | struct vlan_entry *vlan; | |
c3ade5ca | 3649 | |
ec87fd3b | 3650 | list_for_each_entry(bond, &bn->dev_list, bond_list) { |
c3ade5ca JV |
3651 | if (bond->dev == event_dev) { |
3652 | switch (event) { | |
3653 | case NETDEV_UP: | |
3654 | bond->master_ip = ifa->ifa_local; | |
3655 | return NOTIFY_OK; | |
3656 | case NETDEV_DOWN: | |
3657 | bond->master_ip = bond_glean_dev_ip(bond->dev); | |
3658 | return NOTIFY_OK; | |
3659 | default: | |
3660 | return NOTIFY_DONE; | |
3661 | } | |
3662 | } | |
3663 | ||
0883beca | 3664 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
f35188fa JV |
3665 | if (!bond->vlgrp) |
3666 | continue; | |
5c15bdec | 3667 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
3668 | if (vlan_dev == event_dev) { |
3669 | switch (event) { | |
3670 | case NETDEV_UP: | |
3671 | vlan->vlan_ip = ifa->ifa_local; | |
3672 | return NOTIFY_OK; | |
3673 | case NETDEV_DOWN: | |
3674 | vlan->vlan_ip = | |
3675 | bond_glean_dev_ip(vlan_dev); | |
3676 | return NOTIFY_OK; | |
3677 | default: | |
3678 | return NOTIFY_DONE; | |
3679 | } | |
3680 | } | |
3681 | } | |
3682 | } | |
3683 | return NOTIFY_DONE; | |
3684 | } | |
3685 | ||
1da177e4 LT |
3686 | static struct notifier_block bond_netdev_notifier = { |
3687 | .notifier_call = bond_netdev_event, | |
3688 | }; | |
3689 | ||
c3ade5ca JV |
3690 | static struct notifier_block bond_inetaddr_notifier = { |
3691 | .notifier_call = bond_inetaddr_event, | |
3692 | }; | |
3693 | ||
1da177e4 LT |
3694 | /*-------------------------- Packet type handling ---------------------------*/ |
3695 | ||
3696 | /* register to receive lacpdus on a bond */ | |
3697 | static void bond_register_lacpdu(struct bonding *bond) | |
3698 | { | |
3699 | struct packet_type *pk_type = &(BOND_AD_INFO(bond).ad_pkt_type); | |
3700 | ||
3701 | /* initialize packet type */ | |
3702 | pk_type->type = PKT_TYPE_LACPDU; | |
3703 | pk_type->dev = bond->dev; | |
3704 | pk_type->func = bond_3ad_lacpdu_recv; | |
3705 | ||
3706 | dev_add_pack(pk_type); | |
3707 | } | |
3708 | ||
3709 | /* unregister to receive lacpdus on a bond */ | |
3710 | static void bond_unregister_lacpdu(struct bonding *bond) | |
3711 | { | |
3712 | dev_remove_pack(&(BOND_AD_INFO(bond).ad_pkt_type)); | |
3713 | } | |
3714 | ||
f5b2b966 JV |
3715 | void bond_register_arp(struct bonding *bond) |
3716 | { | |
3717 | struct packet_type *pt = &bond->arp_mon_pt; | |
3718 | ||
c4f283b1 JV |
3719 | if (pt->type) |
3720 | return; | |
3721 | ||
f5b2b966 | 3722 | pt->type = htons(ETH_P_ARP); |
e245cb71 | 3723 | pt->dev = bond->dev; |
f5b2b966 JV |
3724 | pt->func = bond_arp_rcv; |
3725 | dev_add_pack(pt); | |
3726 | } | |
3727 | ||
3728 | void bond_unregister_arp(struct bonding *bond) | |
3729 | { | |
c4f283b1 JV |
3730 | struct packet_type *pt = &bond->arp_mon_pt; |
3731 | ||
3732 | dev_remove_pack(pt); | |
3733 | pt->type = 0; | |
f5b2b966 JV |
3734 | } |
3735 | ||
169a3e66 JV |
3736 | /*---------------------------- Hashing Policies -----------------------------*/ |
3737 | ||
6f6652be JV |
3738 | /* |
3739 | * Hash for the output device based upon layer 2 and layer 3 data. If | |
3740 | * the packet is not IP mimic bond_xmit_hash_policy_l2() | |
3741 | */ | |
a361c83c | 3742 | static int bond_xmit_hash_policy_l23(struct sk_buff *skb, int count) |
6f6652be JV |
3743 | { |
3744 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
3745 | struct iphdr *iph = ip_hdr(skb); | |
3746 | ||
f14c4e4e | 3747 | if (skb->protocol == htons(ETH_P_IP)) { |
6f6652be | 3748 | return ((ntohl(iph->saddr ^ iph->daddr) & 0xffff) ^ |
d3da6831 | 3749 | (data->h_dest[5] ^ data->h_source[5])) % count; |
6f6652be JV |
3750 | } |
3751 | ||
d3da6831 | 3752 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
6f6652be JV |
3753 | } |
3754 | ||
169a3e66 | 3755 | /* |
59c51591 | 3756 | * Hash for the output device based upon layer 3 and layer 4 data. If |
169a3e66 JV |
3757 | * the packet is a frag or not TCP or UDP, just use layer 3 data. If it is |
3758 | * altogether not IP, mimic bond_xmit_hash_policy_l2() | |
3759 | */ | |
a361c83c | 3760 | static int bond_xmit_hash_policy_l34(struct sk_buff *skb, int count) |
169a3e66 JV |
3761 | { |
3762 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
eddc9ec5 | 3763 | struct iphdr *iph = ip_hdr(skb); |
d3bb52b0 | 3764 | __be16 *layer4hdr = (__be16 *)((u32 *)iph + iph->ihl); |
169a3e66 JV |
3765 | int layer4_xor = 0; |
3766 | ||
f14c4e4e BH |
3767 | if (skb->protocol == htons(ETH_P_IP)) { |
3768 | if (!(iph->frag_off & htons(IP_MF|IP_OFFSET)) && | |
169a3e66 JV |
3769 | (iph->protocol == IPPROTO_TCP || |
3770 | iph->protocol == IPPROTO_UDP)) { | |
d3bb52b0 | 3771 | layer4_xor = ntohs((*layer4hdr ^ *(layer4hdr + 1))); |
169a3e66 JV |
3772 | } |
3773 | return (layer4_xor ^ | |
3774 | ((ntohl(iph->saddr ^ iph->daddr)) & 0xffff)) % count; | |
3775 | ||
3776 | } | |
3777 | ||
d3da6831 | 3778 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
169a3e66 JV |
3779 | } |
3780 | ||
3781 | /* | |
3782 | * Hash for the output device based upon layer 2 data | |
3783 | */ | |
a361c83c | 3784 | static int bond_xmit_hash_policy_l2(struct sk_buff *skb, int count) |
169a3e66 JV |
3785 | { |
3786 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
3787 | ||
d3da6831 | 3788 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
169a3e66 JV |
3789 | } |
3790 | ||
1da177e4 LT |
3791 | /*-------------------------- Device entry points ----------------------------*/ |
3792 | ||
3793 | static int bond_open(struct net_device *bond_dev) | |
3794 | { | |
454d7c9b | 3795 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3796 | |
3797 | bond->kill_timers = 0; | |
3798 | ||
5a37e8ca FL |
3799 | INIT_DELAYED_WORK(&bond->mcast_work, bond_resend_igmp_join_requests_delayed); |
3800 | ||
58402054 | 3801 | if (bond_is_lb(bond)) { |
1da177e4 LT |
3802 | /* bond_alb_initialize must be called before the timer |
3803 | * is started. | |
3804 | */ | |
3805 | if (bond_alb_initialize(bond, (bond->params.mode == BOND_MODE_ALB))) { | |
3806 | /* something went wrong - fail the open operation */ | |
b473946a | 3807 | return -ENOMEM; |
1da177e4 LT |
3808 | } |
3809 | ||
1b76b316 JV |
3810 | INIT_DELAYED_WORK(&bond->alb_work, bond_alb_monitor); |
3811 | queue_delayed_work(bond->wq, &bond->alb_work, 0); | |
1da177e4 LT |
3812 | } |
3813 | ||
3814 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ | |
1b76b316 JV |
3815 | INIT_DELAYED_WORK(&bond->mii_work, bond_mii_monitor); |
3816 | queue_delayed_work(bond->wq, &bond->mii_work, 0); | |
1da177e4 LT |
3817 | } |
3818 | ||
3819 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ | |
1b76b316 JV |
3820 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) |
3821 | INIT_DELAYED_WORK(&bond->arp_work, | |
3822 | bond_activebackup_arp_mon); | |
3823 | else | |
3824 | INIT_DELAYED_WORK(&bond->arp_work, | |
3825 | bond_loadbalance_arp_mon); | |
3826 | ||
3827 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
f5b2b966 JV |
3828 | if (bond->params.arp_validate) |
3829 | bond_register_arp(bond); | |
1da177e4 LT |
3830 | } |
3831 | ||
3832 | if (bond->params.mode == BOND_MODE_8023AD) { | |
a40745f5 | 3833 | INIT_DELAYED_WORK(&bond->ad_work, bond_3ad_state_machine_handler); |
1b76b316 | 3834 | queue_delayed_work(bond->wq, &bond->ad_work, 0); |
1da177e4 LT |
3835 | /* register to receive LACPDUs */ |
3836 | bond_register_lacpdu(bond); | |
fd989c83 | 3837 | bond_3ad_initiate_agg_selection(bond, 1); |
1da177e4 LT |
3838 | } |
3839 | ||
3840 | return 0; | |
3841 | } | |
3842 | ||
3843 | static int bond_close(struct net_device *bond_dev) | |
3844 | { | |
454d7c9b | 3845 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3846 | |
3847 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3848 | /* Unregister the receive of LACPDUs */ | |
3849 | bond_unregister_lacpdu(bond); | |
3850 | } | |
3851 | ||
f5b2b966 JV |
3852 | if (bond->params.arp_validate) |
3853 | bond_unregister_arp(bond); | |
3854 | ||
1da177e4 LT |
3855 | write_lock_bh(&bond->lock); |
3856 | ||
b59f9f74 | 3857 | bond->send_grat_arp = 0; |
305d552a | 3858 | bond->send_unsol_na = 0; |
1da177e4 LT |
3859 | |
3860 | /* signal timers not to re-arm */ | |
3861 | bond->kill_timers = 1; | |
3862 | ||
3863 | write_unlock_bh(&bond->lock); | |
3864 | ||
1da177e4 | 3865 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ |
1b76b316 | 3866 | cancel_delayed_work(&bond->mii_work); |
1da177e4 LT |
3867 | } |
3868 | ||
3869 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ | |
1b76b316 | 3870 | cancel_delayed_work(&bond->arp_work); |
1da177e4 LT |
3871 | } |
3872 | ||
3873 | switch (bond->params.mode) { | |
3874 | case BOND_MODE_8023AD: | |
1b76b316 | 3875 | cancel_delayed_work(&bond->ad_work); |
1da177e4 LT |
3876 | break; |
3877 | case BOND_MODE_TLB: | |
3878 | case BOND_MODE_ALB: | |
1b76b316 | 3879 | cancel_delayed_work(&bond->alb_work); |
1da177e4 LT |
3880 | break; |
3881 | default: | |
3882 | break; | |
3883 | } | |
3884 | ||
5a37e8ca FL |
3885 | if (delayed_work_pending(&bond->mcast_work)) |
3886 | cancel_delayed_work(&bond->mcast_work); | |
1da177e4 | 3887 | |
58402054 | 3888 | if (bond_is_lb(bond)) { |
1da177e4 LT |
3889 | /* Must be called only after all |
3890 | * slaves have been released | |
3891 | */ | |
3892 | bond_alb_deinitialize(bond); | |
3893 | } | |
3894 | ||
3895 | return 0; | |
3896 | } | |
3897 | ||
28172739 ED |
3898 | static struct rtnl_link_stats64 *bond_get_stats(struct net_device *bond_dev, |
3899 | struct rtnl_link_stats64 *stats) | |
1da177e4 | 3900 | { |
454d7c9b | 3901 | struct bonding *bond = netdev_priv(bond_dev); |
28172739 | 3902 | struct rtnl_link_stats64 temp; |
1da177e4 LT |
3903 | struct slave *slave; |
3904 | int i; | |
3905 | ||
28172739 | 3906 | memset(stats, 0, sizeof(*stats)); |
1da177e4 LT |
3907 | |
3908 | read_lock_bh(&bond->lock); | |
3909 | ||
3910 | bond_for_each_slave(bond, slave, i) { | |
be1f3c2c | 3911 | const struct rtnl_link_stats64 *sstats = |
28172739 ED |
3912 | dev_get_stats(slave->dev, &temp); |
3913 | ||
3914 | stats->rx_packets += sstats->rx_packets; | |
3915 | stats->rx_bytes += sstats->rx_bytes; | |
3916 | stats->rx_errors += sstats->rx_errors; | |
3917 | stats->rx_dropped += sstats->rx_dropped; | |
3918 | ||
3919 | stats->tx_packets += sstats->tx_packets; | |
3920 | stats->tx_bytes += sstats->tx_bytes; | |
3921 | stats->tx_errors += sstats->tx_errors; | |
3922 | stats->tx_dropped += sstats->tx_dropped; | |
3923 | ||
3924 | stats->multicast += sstats->multicast; | |
3925 | stats->collisions += sstats->collisions; | |
3926 | ||
3927 | stats->rx_length_errors += sstats->rx_length_errors; | |
3928 | stats->rx_over_errors += sstats->rx_over_errors; | |
3929 | stats->rx_crc_errors += sstats->rx_crc_errors; | |
3930 | stats->rx_frame_errors += sstats->rx_frame_errors; | |
3931 | stats->rx_fifo_errors += sstats->rx_fifo_errors; | |
3932 | stats->rx_missed_errors += sstats->rx_missed_errors; | |
3933 | ||
3934 | stats->tx_aborted_errors += sstats->tx_aborted_errors; | |
3935 | stats->tx_carrier_errors += sstats->tx_carrier_errors; | |
3936 | stats->tx_fifo_errors += sstats->tx_fifo_errors; | |
3937 | stats->tx_heartbeat_errors += sstats->tx_heartbeat_errors; | |
3938 | stats->tx_window_errors += sstats->tx_window_errors; | |
2439f9eb AG |
3939 | } |
3940 | ||
1da177e4 LT |
3941 | read_unlock_bh(&bond->lock); |
3942 | ||
3943 | return stats; | |
3944 | } | |
3945 | ||
3946 | static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd) | |
3947 | { | |
3948 | struct net_device *slave_dev = NULL; | |
3949 | struct ifbond k_binfo; | |
3950 | struct ifbond __user *u_binfo = NULL; | |
3951 | struct ifslave k_sinfo; | |
3952 | struct ifslave __user *u_sinfo = NULL; | |
3953 | struct mii_ioctl_data *mii = NULL; | |
1da177e4 LT |
3954 | int res = 0; |
3955 | ||
a4aee5c8 | 3956 | pr_debug("bond_ioctl: master=%s, cmd=%d\n", bond_dev->name, cmd); |
1da177e4 LT |
3957 | |
3958 | switch (cmd) { | |
1da177e4 LT |
3959 | case SIOCGMIIPHY: |
3960 | mii = if_mii(ifr); | |
3d632c3f | 3961 | if (!mii) |
1da177e4 | 3962 | return -EINVAL; |
3d632c3f | 3963 | |
1da177e4 LT |
3964 | mii->phy_id = 0; |
3965 | /* Fall Through */ | |
3966 | case SIOCGMIIREG: | |
3967 | /* | |
3968 | * We do this again just in case we were called by SIOCGMIIREG | |
3969 | * instead of SIOCGMIIPHY. | |
3970 | */ | |
3971 | mii = if_mii(ifr); | |
3d632c3f | 3972 | if (!mii) |
1da177e4 | 3973 | return -EINVAL; |
3d632c3f | 3974 | |
1da177e4 LT |
3975 | |
3976 | if (mii->reg_num == 1) { | |
454d7c9b | 3977 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 3978 | mii->val_out = 0; |
6603a6f2 | 3979 | read_lock(&bond->lock); |
1da177e4 | 3980 | read_lock(&bond->curr_slave_lock); |
3d632c3f | 3981 | if (netif_carrier_ok(bond->dev)) |
1da177e4 | 3982 | mii->val_out = BMSR_LSTATUS; |
3d632c3f | 3983 | |
1da177e4 | 3984 | read_unlock(&bond->curr_slave_lock); |
6603a6f2 | 3985 | read_unlock(&bond->lock); |
1da177e4 LT |
3986 | } |
3987 | ||
3988 | return 0; | |
3989 | case BOND_INFO_QUERY_OLD: | |
3990 | case SIOCBONDINFOQUERY: | |
3991 | u_binfo = (struct ifbond __user *)ifr->ifr_data; | |
3992 | ||
3d632c3f | 3993 | if (copy_from_user(&k_binfo, u_binfo, sizeof(ifbond))) |
1da177e4 | 3994 | return -EFAULT; |
1da177e4 LT |
3995 | |
3996 | res = bond_info_query(bond_dev, &k_binfo); | |
3d632c3f SH |
3997 | if (res == 0 && |
3998 | copy_to_user(u_binfo, &k_binfo, sizeof(ifbond))) | |
3999 | return -EFAULT; | |
1da177e4 LT |
4000 | |
4001 | return res; | |
4002 | case BOND_SLAVE_INFO_QUERY_OLD: | |
4003 | case SIOCBONDSLAVEINFOQUERY: | |
4004 | u_sinfo = (struct ifslave __user *)ifr->ifr_data; | |
4005 | ||
3d632c3f | 4006 | if (copy_from_user(&k_sinfo, u_sinfo, sizeof(ifslave))) |
1da177e4 | 4007 | return -EFAULT; |
1da177e4 LT |
4008 | |
4009 | res = bond_slave_info_query(bond_dev, &k_sinfo); | |
3d632c3f SH |
4010 | if (res == 0 && |
4011 | copy_to_user(u_sinfo, &k_sinfo, sizeof(ifslave))) | |
4012 | return -EFAULT; | |
1da177e4 LT |
4013 | |
4014 | return res; | |
4015 | default: | |
4016 | /* Go on */ | |
4017 | break; | |
4018 | } | |
4019 | ||
3d632c3f | 4020 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4021 | return -EPERM; |
1da177e4 | 4022 | |
ec87fd3b | 4023 | slave_dev = dev_get_by_name(dev_net(bond_dev), ifr->ifr_slave); |
1da177e4 | 4024 | |
a4aee5c8 | 4025 | pr_debug("slave_dev=%p:\n", slave_dev); |
1da177e4 | 4026 | |
3d632c3f | 4027 | if (!slave_dev) |
1da177e4 | 4028 | res = -ENODEV; |
3d632c3f | 4029 | else { |
a4aee5c8 | 4030 | pr_debug("slave_dev->name=%s:\n", slave_dev->name); |
1da177e4 LT |
4031 | switch (cmd) { |
4032 | case BOND_ENSLAVE_OLD: | |
4033 | case SIOCBONDENSLAVE: | |
4034 | res = bond_enslave(bond_dev, slave_dev); | |
4035 | break; | |
4036 | case BOND_RELEASE_OLD: | |
4037 | case SIOCBONDRELEASE: | |
4038 | res = bond_release(bond_dev, slave_dev); | |
4039 | break; | |
4040 | case BOND_SETHWADDR_OLD: | |
4041 | case SIOCBONDSETHWADDR: | |
4042 | res = bond_sethwaddr(bond_dev, slave_dev); | |
4043 | break; | |
4044 | case BOND_CHANGE_ACTIVE_OLD: | |
4045 | case SIOCBONDCHANGEACTIVE: | |
4046 | res = bond_ioctl_change_active(bond_dev, slave_dev); | |
4047 | break; | |
4048 | default: | |
4049 | res = -EOPNOTSUPP; | |
4050 | } | |
4051 | ||
4052 | dev_put(slave_dev); | |
4053 | } | |
4054 | ||
1da177e4 LT |
4055 | return res; |
4056 | } | |
4057 | ||
22bedad3 JP |
4058 | static bool bond_addr_in_mc_list(unsigned char *addr, |
4059 | struct netdev_hw_addr_list *list, | |
4060 | int addrlen) | |
4061 | { | |
4062 | struct netdev_hw_addr *ha; | |
4063 | ||
4064 | netdev_hw_addr_list_for_each(ha, list) | |
4065 | if (!memcmp(ha->addr, addr, addrlen)) | |
4066 | return true; | |
4067 | ||
4068 | return false; | |
4069 | } | |
4070 | ||
1da177e4 LT |
4071 | static void bond_set_multicast_list(struct net_device *bond_dev) |
4072 | { | |
454d7c9b | 4073 | struct bonding *bond = netdev_priv(bond_dev); |
22bedad3 JP |
4074 | struct netdev_hw_addr *ha; |
4075 | bool found; | |
1da177e4 | 4076 | |
1da177e4 LT |
4077 | /* |
4078 | * Do promisc before checking multicast_mode | |
4079 | */ | |
3d632c3f | 4080 | if ((bond_dev->flags & IFF_PROMISC) && !(bond->flags & IFF_PROMISC)) |
7e1a1ac1 WC |
4081 | /* |
4082 | * FIXME: Need to handle the error when one of the multi-slaves | |
4083 | * encounters error. | |
4084 | */ | |
1da177e4 | 4085 | bond_set_promiscuity(bond, 1); |
1da177e4 | 4086 | |
3d632c3f SH |
4087 | |
4088 | if (!(bond_dev->flags & IFF_PROMISC) && (bond->flags & IFF_PROMISC)) | |
1da177e4 | 4089 | bond_set_promiscuity(bond, -1); |
3d632c3f | 4090 | |
1da177e4 LT |
4091 | |
4092 | /* set allmulti flag to slaves */ | |
3d632c3f | 4093 | if ((bond_dev->flags & IFF_ALLMULTI) && !(bond->flags & IFF_ALLMULTI)) |
7e1a1ac1 WC |
4094 | /* |
4095 | * FIXME: Need to handle the error when one of the multi-slaves | |
4096 | * encounters error. | |
4097 | */ | |
1da177e4 | 4098 | bond_set_allmulti(bond, 1); |
1da177e4 | 4099 | |
3d632c3f SH |
4100 | |
4101 | if (!(bond_dev->flags & IFF_ALLMULTI) && (bond->flags & IFF_ALLMULTI)) | |
1da177e4 | 4102 | bond_set_allmulti(bond, -1); |
3d632c3f | 4103 | |
1da177e4 | 4104 | |
80ee5ad2 JV |
4105 | read_lock(&bond->lock); |
4106 | ||
1da177e4 LT |
4107 | bond->flags = bond_dev->flags; |
4108 | ||
4109 | /* looking for addresses to add to slaves' mc list */ | |
22bedad3 JP |
4110 | netdev_for_each_mc_addr(ha, bond_dev) { |
4111 | found = bond_addr_in_mc_list(ha->addr, &bond->mc_list, | |
4112 | bond_dev->addr_len); | |
4113 | if (!found) | |
4114 | bond_mc_add(bond, ha->addr); | |
1da177e4 LT |
4115 | } |
4116 | ||
4117 | /* looking for addresses to delete from slaves' list */ | |
22bedad3 JP |
4118 | netdev_hw_addr_list_for_each(ha, &bond->mc_list) { |
4119 | found = bond_addr_in_mc_list(ha->addr, &bond_dev->mc, | |
4120 | bond_dev->addr_len); | |
4121 | if (!found) | |
4122 | bond_mc_del(bond, ha->addr); | |
1da177e4 LT |
4123 | } |
4124 | ||
4125 | /* save master's multicast list */ | |
22bedad3 JP |
4126 | __hw_addr_flush(&bond->mc_list); |
4127 | __hw_addr_add_multiple(&bond->mc_list, &bond_dev->mc, | |
4128 | bond_dev->addr_len, NETDEV_HW_ADDR_T_MULTICAST); | |
1da177e4 | 4129 | |
80ee5ad2 | 4130 | read_unlock(&bond->lock); |
1da177e4 LT |
4131 | } |
4132 | ||
00829823 SH |
4133 | static int bond_neigh_setup(struct net_device *dev, struct neigh_parms *parms) |
4134 | { | |
4135 | struct bonding *bond = netdev_priv(dev); | |
4136 | struct slave *slave = bond->first_slave; | |
4137 | ||
4138 | if (slave) { | |
4139 | const struct net_device_ops *slave_ops | |
4140 | = slave->dev->netdev_ops; | |
4141 | if (slave_ops->ndo_neigh_setup) | |
72e2240f | 4142 | return slave_ops->ndo_neigh_setup(slave->dev, parms); |
00829823 SH |
4143 | } |
4144 | return 0; | |
4145 | } | |
4146 | ||
1da177e4 LT |
4147 | /* |
4148 | * Change the MTU of all of a master's slaves to match the master | |
4149 | */ | |
4150 | static int bond_change_mtu(struct net_device *bond_dev, int new_mtu) | |
4151 | { | |
454d7c9b | 4152 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4153 | struct slave *slave, *stop_at; |
4154 | int res = 0; | |
4155 | int i; | |
4156 | ||
5a03cdb7 | 4157 | pr_debug("bond=%p, name=%s, new_mtu=%d\n", bond, |
a4aee5c8 | 4158 | (bond_dev ? bond_dev->name : "None"), new_mtu); |
1da177e4 LT |
4159 | |
4160 | /* Can't hold bond->lock with bh disabled here since | |
4161 | * some base drivers panic. On the other hand we can't | |
4162 | * hold bond->lock without bh disabled because we'll | |
4163 | * deadlock. The only solution is to rely on the fact | |
4164 | * that we're under rtnl_lock here, and the slaves | |
4165 | * list won't change. This doesn't solve the problem | |
4166 | * of setting the slave's MTU while it is | |
4167 | * transmitting, but the assumption is that the base | |
4168 | * driver can handle that. | |
4169 | * | |
4170 | * TODO: figure out a way to safely iterate the slaves | |
4171 | * list, but without holding a lock around the actual | |
4172 | * call to the base driver. | |
4173 | */ | |
4174 | ||
4175 | bond_for_each_slave(bond, slave, i) { | |
a4aee5c8 JP |
4176 | pr_debug("s %p s->p %p c_m %p\n", |
4177 | slave, | |
4178 | slave->prev, | |
4179 | slave->dev->netdev_ops->ndo_change_mtu); | |
e944ef79 | 4180 | |
1da177e4 LT |
4181 | res = dev_set_mtu(slave->dev, new_mtu); |
4182 | ||
4183 | if (res) { | |
4184 | /* If we failed to set the slave's mtu to the new value | |
4185 | * we must abort the operation even in ACTIVE_BACKUP | |
4186 | * mode, because if we allow the backup slaves to have | |
4187 | * different mtu values than the active slave we'll | |
4188 | * need to change their mtu when doing a failover. That | |
4189 | * means changing their mtu from timer context, which | |
4190 | * is probably not a good idea. | |
4191 | */ | |
5a03cdb7 | 4192 | pr_debug("err %d %s\n", res, slave->dev->name); |
1da177e4 LT |
4193 | goto unwind; |
4194 | } | |
4195 | } | |
4196 | ||
4197 | bond_dev->mtu = new_mtu; | |
4198 | ||
4199 | return 0; | |
4200 | ||
4201 | unwind: | |
4202 | /* unwind from head to the slave that failed */ | |
4203 | stop_at = slave; | |
4204 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { | |
4205 | int tmp_res; | |
4206 | ||
4207 | tmp_res = dev_set_mtu(slave->dev, bond_dev->mtu); | |
4208 | if (tmp_res) { | |
a4aee5c8 JP |
4209 | pr_debug("unwind err %d dev %s\n", |
4210 | tmp_res, slave->dev->name); | |
1da177e4 LT |
4211 | } |
4212 | } | |
4213 | ||
4214 | return res; | |
4215 | } | |
4216 | ||
4217 | /* | |
4218 | * Change HW address | |
4219 | * | |
4220 | * Note that many devices must be down to change the HW address, and | |
4221 | * downing the master releases all slaves. We can make bonds full of | |
4222 | * bonding devices to test this, however. | |
4223 | */ | |
4224 | static int bond_set_mac_address(struct net_device *bond_dev, void *addr) | |
4225 | { | |
454d7c9b | 4226 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4227 | struct sockaddr *sa = addr, tmp_sa; |
4228 | struct slave *slave, *stop_at; | |
4229 | int res = 0; | |
4230 | int i; | |
4231 | ||
eb7cc59a SH |
4232 | if (bond->params.mode == BOND_MODE_ALB) |
4233 | return bond_alb_set_mac_address(bond_dev, addr); | |
4234 | ||
4235 | ||
a4aee5c8 JP |
4236 | pr_debug("bond=%p, name=%s\n", |
4237 | bond, bond_dev ? bond_dev->name : "None"); | |
1da177e4 | 4238 | |
dd957c57 | 4239 | /* |
3915c1e8 JV |
4240 | * If fail_over_mac is set to active, do nothing and return |
4241 | * success. Returning an error causes ifenslave to fail. | |
dd957c57 | 4242 | */ |
3915c1e8 | 4243 | if (bond->params.fail_over_mac == BOND_FOM_ACTIVE) |
dd957c57 | 4244 | return 0; |
2ab82852 | 4245 | |
3d632c3f | 4246 | if (!is_valid_ether_addr(sa->sa_data)) |
1da177e4 | 4247 | return -EADDRNOTAVAIL; |
1da177e4 LT |
4248 | |
4249 | /* Can't hold bond->lock with bh disabled here since | |
4250 | * some base drivers panic. On the other hand we can't | |
4251 | * hold bond->lock without bh disabled because we'll | |
4252 | * deadlock. The only solution is to rely on the fact | |
4253 | * that we're under rtnl_lock here, and the slaves | |
4254 | * list won't change. This doesn't solve the problem | |
4255 | * of setting the slave's hw address while it is | |
4256 | * transmitting, but the assumption is that the base | |
4257 | * driver can handle that. | |
4258 | * | |
4259 | * TODO: figure out a way to safely iterate the slaves | |
4260 | * list, but without holding a lock around the actual | |
4261 | * call to the base driver. | |
4262 | */ | |
4263 | ||
4264 | bond_for_each_slave(bond, slave, i) { | |
eb7cc59a | 4265 | const struct net_device_ops *slave_ops = slave->dev->netdev_ops; |
5a03cdb7 | 4266 | pr_debug("slave %p %s\n", slave, slave->dev->name); |
1da177e4 | 4267 | |
eb7cc59a | 4268 | if (slave_ops->ndo_set_mac_address == NULL) { |
1da177e4 | 4269 | res = -EOPNOTSUPP; |
5a03cdb7 | 4270 | pr_debug("EOPNOTSUPP %s\n", slave->dev->name); |
1da177e4 LT |
4271 | goto unwind; |
4272 | } | |
4273 | ||
4274 | res = dev_set_mac_address(slave->dev, addr); | |
4275 | if (res) { | |
4276 | /* TODO: consider downing the slave | |
4277 | * and retry ? | |
4278 | * User should expect communications | |
4279 | * breakage anyway until ARP finish | |
4280 | * updating, so... | |
4281 | */ | |
5a03cdb7 | 4282 | pr_debug("err %d %s\n", res, slave->dev->name); |
1da177e4 LT |
4283 | goto unwind; |
4284 | } | |
4285 | } | |
4286 | ||
4287 | /* success */ | |
4288 | memcpy(bond_dev->dev_addr, sa->sa_data, bond_dev->addr_len); | |
4289 | return 0; | |
4290 | ||
4291 | unwind: | |
4292 | memcpy(tmp_sa.sa_data, bond_dev->dev_addr, bond_dev->addr_len); | |
4293 | tmp_sa.sa_family = bond_dev->type; | |
4294 | ||
4295 | /* unwind from head to the slave that failed */ | |
4296 | stop_at = slave; | |
4297 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { | |
4298 | int tmp_res; | |
4299 | ||
4300 | tmp_res = dev_set_mac_address(slave->dev, &tmp_sa); | |
4301 | if (tmp_res) { | |
a4aee5c8 JP |
4302 | pr_debug("unwind err %d dev %s\n", |
4303 | tmp_res, slave->dev->name); | |
1da177e4 LT |
4304 | } |
4305 | } | |
4306 | ||
4307 | return res; | |
4308 | } | |
4309 | ||
4310 | static int bond_xmit_roundrobin(struct sk_buff *skb, struct net_device *bond_dev) | |
4311 | { | |
454d7c9b | 4312 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 4313 | struct slave *slave, *start_at; |
cf5f9044 | 4314 | int i, slave_no, res = 1; |
a2fd940f | 4315 | struct iphdr *iph = ip_hdr(skb); |
1da177e4 LT |
4316 | |
4317 | read_lock(&bond->lock); | |
4318 | ||
3d632c3f | 4319 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4320 | goto out; |
cf5f9044 | 4321 | /* |
a2fd940f AG |
4322 | * Start with the curr_active_slave that joined the bond as the |
4323 | * default for sending IGMP traffic. For failover purposes one | |
4324 | * needs to maintain some consistency for the interface that will | |
4325 | * send the join/membership reports. The curr_active_slave found | |
4326 | * will send all of this type of traffic. | |
cf5f9044 | 4327 | */ |
00ae7028 | 4328 | if ((iph->protocol == IPPROTO_IGMP) && |
a2fd940f | 4329 | (skb->protocol == htons(ETH_P_IP))) { |
1da177e4 | 4330 | |
a2fd940f AG |
4331 | read_lock(&bond->curr_slave_lock); |
4332 | slave = bond->curr_active_slave; | |
4333 | read_unlock(&bond->curr_slave_lock); | |
4334 | ||
4335 | if (!slave) | |
4336 | goto out; | |
4337 | } else { | |
4338 | /* | |
4339 | * Concurrent TX may collide on rr_tx_counter; we accept | |
4340 | * that as being rare enough not to justify using an | |
4341 | * atomic op here. | |
4342 | */ | |
4343 | slave_no = bond->rr_tx_counter++ % bond->slave_cnt; | |
4344 | ||
4345 | bond_for_each_slave(bond, slave, i) { | |
4346 | slave_no--; | |
4347 | if (slave_no < 0) | |
4348 | break; | |
4349 | } | |
1da177e4 LT |
4350 | } |
4351 | ||
cf5f9044 | 4352 | start_at = slave; |
1da177e4 LT |
4353 | bond_for_each_slave_from(bond, slave, i, start_at) { |
4354 | if (IS_UP(slave->dev) && | |
4355 | (slave->link == BOND_LINK_UP) && | |
4356 | (slave->state == BOND_STATE_ACTIVE)) { | |
4357 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
1da177e4 LT |
4358 | break; |
4359 | } | |
4360 | } | |
4361 | ||
1da177e4 LT |
4362 | out: |
4363 | if (res) { | |
4364 | /* no suitable interface, frame not sent */ | |
4365 | dev_kfree_skb(skb); | |
4366 | } | |
4367 | read_unlock(&bond->lock); | |
ec634fe3 | 4368 | return NETDEV_TX_OK; |
1da177e4 LT |
4369 | } |
4370 | ||
075897ce | 4371 | |
1da177e4 LT |
4372 | /* |
4373 | * in active-backup mode, we know that bond->curr_active_slave is always valid if | |
4374 | * the bond has a usable interface. | |
4375 | */ | |
4376 | static int bond_xmit_activebackup(struct sk_buff *skb, struct net_device *bond_dev) | |
4377 | { | |
454d7c9b | 4378 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4379 | int res = 1; |
4380 | ||
1da177e4 LT |
4381 | read_lock(&bond->lock); |
4382 | read_lock(&bond->curr_slave_lock); | |
4383 | ||
3d632c3f | 4384 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4385 | goto out; |
1da177e4 | 4386 | |
075897ce JL |
4387 | if (!bond->curr_active_slave) |
4388 | goto out; | |
4389 | ||
075897ce JL |
4390 | res = bond_dev_queue_xmit(bond, skb, bond->curr_active_slave->dev); |
4391 | ||
1da177e4 | 4392 | out: |
3d632c3f | 4393 | if (res) |
1da177e4 LT |
4394 | /* no suitable interface, frame not sent */ |
4395 | dev_kfree_skb(skb); | |
3d632c3f | 4396 | |
1da177e4 LT |
4397 | read_unlock(&bond->curr_slave_lock); |
4398 | read_unlock(&bond->lock); | |
ec634fe3 | 4399 | return NETDEV_TX_OK; |
1da177e4 LT |
4400 | } |
4401 | ||
4402 | /* | |
169a3e66 JV |
4403 | * In bond_xmit_xor() , we determine the output device by using a pre- |
4404 | * determined xmit_hash_policy(), If the selected device is not enabled, | |
4405 | * find the next active slave. | |
1da177e4 LT |
4406 | */ |
4407 | static int bond_xmit_xor(struct sk_buff *skb, struct net_device *bond_dev) | |
4408 | { | |
454d7c9b | 4409 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4410 | struct slave *slave, *start_at; |
4411 | int slave_no; | |
4412 | int i; | |
4413 | int res = 1; | |
4414 | ||
4415 | read_lock(&bond->lock); | |
4416 | ||
3d632c3f | 4417 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4418 | goto out; |
1da177e4 | 4419 | |
a361c83c | 4420 | slave_no = bond->xmit_hash_policy(skb, bond->slave_cnt); |
1da177e4 LT |
4421 | |
4422 | bond_for_each_slave(bond, slave, i) { | |
4423 | slave_no--; | |
3d632c3f | 4424 | if (slave_no < 0) |
1da177e4 | 4425 | break; |
1da177e4 LT |
4426 | } |
4427 | ||
4428 | start_at = slave; | |
4429 | ||
4430 | bond_for_each_slave_from(bond, slave, i, start_at) { | |
4431 | if (IS_UP(slave->dev) && | |
4432 | (slave->link == BOND_LINK_UP) && | |
4433 | (slave->state == BOND_STATE_ACTIVE)) { | |
4434 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
4435 | break; | |
4436 | } | |
4437 | } | |
4438 | ||
4439 | out: | |
4440 | if (res) { | |
4441 | /* no suitable interface, frame not sent */ | |
4442 | dev_kfree_skb(skb); | |
4443 | } | |
4444 | read_unlock(&bond->lock); | |
ec634fe3 | 4445 | return NETDEV_TX_OK; |
1da177e4 LT |
4446 | } |
4447 | ||
4448 | /* | |
4449 | * in broadcast mode, we send everything to all usable interfaces. | |
4450 | */ | |
4451 | static int bond_xmit_broadcast(struct sk_buff *skb, struct net_device *bond_dev) | |
4452 | { | |
454d7c9b | 4453 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4454 | struct slave *slave, *start_at; |
4455 | struct net_device *tx_dev = NULL; | |
4456 | int i; | |
4457 | int res = 1; | |
4458 | ||
4459 | read_lock(&bond->lock); | |
4460 | ||
3d632c3f | 4461 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4462 | goto out; |
1da177e4 LT |
4463 | |
4464 | read_lock(&bond->curr_slave_lock); | |
4465 | start_at = bond->curr_active_slave; | |
4466 | read_unlock(&bond->curr_slave_lock); | |
4467 | ||
3d632c3f | 4468 | if (!start_at) |
1da177e4 | 4469 | goto out; |
1da177e4 LT |
4470 | |
4471 | bond_for_each_slave_from(bond, slave, i, start_at) { | |
4472 | if (IS_UP(slave->dev) && | |
4473 | (slave->link == BOND_LINK_UP) && | |
4474 | (slave->state == BOND_STATE_ACTIVE)) { | |
4475 | if (tx_dev) { | |
4476 | struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC); | |
4477 | if (!skb2) { | |
a4aee5c8 | 4478 | pr_err("%s: Error: bond_xmit_broadcast(): skb_clone() failed\n", |
4e0952c7 | 4479 | bond_dev->name); |
1da177e4 LT |
4480 | continue; |
4481 | } | |
4482 | ||
4483 | res = bond_dev_queue_xmit(bond, skb2, tx_dev); | |
4484 | if (res) { | |
4485 | dev_kfree_skb(skb2); | |
4486 | continue; | |
4487 | } | |
4488 | } | |
4489 | tx_dev = slave->dev; | |
4490 | } | |
4491 | } | |
4492 | ||
3d632c3f | 4493 | if (tx_dev) |
1da177e4 | 4494 | res = bond_dev_queue_xmit(bond, skb, tx_dev); |
1da177e4 LT |
4495 | |
4496 | out: | |
3d632c3f | 4497 | if (res) |
1da177e4 LT |
4498 | /* no suitable interface, frame not sent */ |
4499 | dev_kfree_skb(skb); | |
3d632c3f | 4500 | |
1da177e4 LT |
4501 | /* frame sent to all suitable interfaces */ |
4502 | read_unlock(&bond->lock); | |
ec634fe3 | 4503 | return NETDEV_TX_OK; |
1da177e4 LT |
4504 | } |
4505 | ||
4506 | /*------------------------- Device initialization ---------------------------*/ | |
4507 | ||
6f6652be JV |
4508 | static void bond_set_xmit_hash_policy(struct bonding *bond) |
4509 | { | |
4510 | switch (bond->params.xmit_policy) { | |
4511 | case BOND_XMIT_POLICY_LAYER23: | |
4512 | bond->xmit_hash_policy = bond_xmit_hash_policy_l23; | |
4513 | break; | |
4514 | case BOND_XMIT_POLICY_LAYER34: | |
4515 | bond->xmit_hash_policy = bond_xmit_hash_policy_l34; | |
4516 | break; | |
4517 | case BOND_XMIT_POLICY_LAYER2: | |
4518 | default: | |
4519 | bond->xmit_hash_policy = bond_xmit_hash_policy_l2; | |
4520 | break; | |
4521 | } | |
4522 | } | |
4523 | ||
bb1d9123 AG |
4524 | /* |
4525 | * Lookup the slave that corresponds to a qid | |
4526 | */ | |
4527 | static inline int bond_slave_override(struct bonding *bond, | |
4528 | struct sk_buff *skb) | |
4529 | { | |
4530 | int i, res = 1; | |
4531 | struct slave *slave = NULL; | |
4532 | struct slave *check_slave; | |
4533 | ||
4534 | read_lock(&bond->lock); | |
4535 | ||
4536 | if (!BOND_IS_OK(bond) || !skb->queue_mapping) | |
4537 | goto out; | |
4538 | ||
4539 | /* Find out if any slaves have the same mapping as this skb. */ | |
4540 | bond_for_each_slave(bond, check_slave, i) { | |
4541 | if (check_slave->queue_id == skb->queue_mapping) { | |
4542 | slave = check_slave; | |
4543 | break; | |
4544 | } | |
4545 | } | |
4546 | ||
4547 | /* If the slave isn't UP, use default transmit policy. */ | |
4548 | if (slave && slave->queue_id && IS_UP(slave->dev) && | |
4549 | (slave->link == BOND_LINK_UP)) { | |
4550 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
4551 | } | |
4552 | ||
4553 | out: | |
4554 | read_unlock(&bond->lock); | |
4555 | return res; | |
4556 | } | |
4557 | ||
4558 | static u16 bond_select_queue(struct net_device *dev, struct sk_buff *skb) | |
4559 | { | |
4560 | /* | |
4561 | * This helper function exists to help dev_pick_tx get the correct | |
4562 | * destination queue. Using a helper function skips the a call to | |
4563 | * skb_tx_hash and will put the skbs in the queue we expect on their | |
4564 | * way down to the bonding driver. | |
4565 | */ | |
4566 | return skb->queue_mapping; | |
4567 | } | |
4568 | ||
424efe9c | 4569 | static netdev_tx_t bond_start_xmit(struct sk_buff *skb, struct net_device *dev) |
00829823 | 4570 | { |
bb1d9123 AG |
4571 | struct bonding *bond = netdev_priv(dev); |
4572 | ||
e843fa50 NH |
4573 | /* |
4574 | * If we risk deadlock from transmitting this in the | |
4575 | * netpoll path, tell netpoll to queue the frame for later tx | |
4576 | */ | |
4577 | if (is_netpoll_tx_blocked(dev)) | |
4578 | return NETDEV_TX_BUSY; | |
4579 | ||
bb1d9123 AG |
4580 | if (TX_QUEUE_OVERRIDE(bond->params.mode)) { |
4581 | if (!bond_slave_override(bond, skb)) | |
4582 | return NETDEV_TX_OK; | |
4583 | } | |
00829823 SH |
4584 | |
4585 | switch (bond->params.mode) { | |
4586 | case BOND_MODE_ROUNDROBIN: | |
4587 | return bond_xmit_roundrobin(skb, dev); | |
4588 | case BOND_MODE_ACTIVEBACKUP: | |
4589 | return bond_xmit_activebackup(skb, dev); | |
4590 | case BOND_MODE_XOR: | |
4591 | return bond_xmit_xor(skb, dev); | |
4592 | case BOND_MODE_BROADCAST: | |
4593 | return bond_xmit_broadcast(skb, dev); | |
4594 | case BOND_MODE_8023AD: | |
4595 | return bond_3ad_xmit_xor(skb, dev); | |
4596 | case BOND_MODE_ALB: | |
4597 | case BOND_MODE_TLB: | |
4598 | return bond_alb_xmit(skb, dev); | |
4599 | default: | |
4600 | /* Should never happen, mode already checked */ | |
a4aee5c8 JP |
4601 | pr_err("%s: Error: Unknown bonding mode %d\n", |
4602 | dev->name, bond->params.mode); | |
00829823 SH |
4603 | WARN_ON_ONCE(1); |
4604 | dev_kfree_skb(skb); | |
4605 | return NETDEV_TX_OK; | |
4606 | } | |
4607 | } | |
4608 | ||
4609 | ||
1da177e4 LT |
4610 | /* |
4611 | * set bond mode specific net device operations | |
4612 | */ | |
a77b5325 | 4613 | void bond_set_mode_ops(struct bonding *bond, int mode) |
1da177e4 | 4614 | { |
169a3e66 JV |
4615 | struct net_device *bond_dev = bond->dev; |
4616 | ||
1da177e4 LT |
4617 | switch (mode) { |
4618 | case BOND_MODE_ROUNDROBIN: | |
1da177e4 LT |
4619 | break; |
4620 | case BOND_MODE_ACTIVEBACKUP: | |
1da177e4 LT |
4621 | break; |
4622 | case BOND_MODE_XOR: | |
6f6652be | 4623 | bond_set_xmit_hash_policy(bond); |
1da177e4 LT |
4624 | break; |
4625 | case BOND_MODE_BROADCAST: | |
1da177e4 LT |
4626 | break; |
4627 | case BOND_MODE_8023AD: | |
8f903c70 | 4628 | bond_set_master_3ad_flags(bond); |
6f6652be | 4629 | bond_set_xmit_hash_policy(bond); |
1da177e4 | 4630 | break; |
1da177e4 | 4631 | case BOND_MODE_ALB: |
8f903c70 JV |
4632 | bond_set_master_alb_flags(bond); |
4633 | /* FALLTHRU */ | |
4634 | case BOND_MODE_TLB: | |
1da177e4 LT |
4635 | break; |
4636 | default: | |
4637 | /* Should never happen, mode already checked */ | |
a4aee5c8 JP |
4638 | pr_err("%s: Error: Unknown bonding mode %d\n", |
4639 | bond_dev->name, mode); | |
1da177e4 LT |
4640 | break; |
4641 | } | |
4642 | } | |
4643 | ||
217df670 JV |
4644 | static void bond_ethtool_get_drvinfo(struct net_device *bond_dev, |
4645 | struct ethtool_drvinfo *drvinfo) | |
4646 | { | |
4647 | strncpy(drvinfo->driver, DRV_NAME, 32); | |
4648 | strncpy(drvinfo->version, DRV_VERSION, 32); | |
4649 | snprintf(drvinfo->fw_version, 32, "%d", BOND_ABI_VERSION); | |
4650 | } | |
4651 | ||
7282d491 | 4652 | static const struct ethtool_ops bond_ethtool_ops = { |
217df670 | 4653 | .get_drvinfo = bond_ethtool_get_drvinfo, |
fa53ebac SH |
4654 | .get_link = ethtool_op_get_link, |
4655 | .get_tx_csum = ethtool_op_get_tx_csum, | |
4656 | .get_sg = ethtool_op_get_sg, | |
4657 | .get_tso = ethtool_op_get_tso, | |
4658 | .get_ufo = ethtool_op_get_ufo, | |
4659 | .get_flags = ethtool_op_get_flags, | |
8531c5ff AK |
4660 | }; |
4661 | ||
eb7cc59a | 4662 | static const struct net_device_ops bond_netdev_ops = { |
181470fc | 4663 | .ndo_init = bond_init, |
9e71626c | 4664 | .ndo_uninit = bond_uninit, |
eb7cc59a SH |
4665 | .ndo_open = bond_open, |
4666 | .ndo_stop = bond_close, | |
00829823 | 4667 | .ndo_start_xmit = bond_start_xmit, |
bb1d9123 | 4668 | .ndo_select_queue = bond_select_queue, |
be1f3c2c | 4669 | .ndo_get_stats64 = bond_get_stats, |
eb7cc59a SH |
4670 | .ndo_do_ioctl = bond_do_ioctl, |
4671 | .ndo_set_multicast_list = bond_set_multicast_list, | |
4672 | .ndo_change_mtu = bond_change_mtu, | |
eb7cc59a | 4673 | .ndo_set_mac_address = bond_set_mac_address, |
00829823 | 4674 | .ndo_neigh_setup = bond_neigh_setup, |
eb7cc59a SH |
4675 | .ndo_vlan_rx_register = bond_vlan_rx_register, |
4676 | .ndo_vlan_rx_add_vid = bond_vlan_rx_add_vid, | |
4677 | .ndo_vlan_rx_kill_vid = bond_vlan_rx_kill_vid, | |
f6dc31a8 WC |
4678 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4679 | .ndo_netpoll_cleanup = bond_netpoll_cleanup, | |
4680 | .ndo_poll_controller = bond_poll_controller, | |
4681 | #endif | |
eb7cc59a SH |
4682 | }; |
4683 | ||
9e2e61fb AW |
4684 | static void bond_destructor(struct net_device *bond_dev) |
4685 | { | |
4686 | struct bonding *bond = netdev_priv(bond_dev); | |
4687 | if (bond->wq) | |
4688 | destroy_workqueue(bond->wq); | |
4689 | free_netdev(bond_dev); | |
4690 | } | |
4691 | ||
181470fc | 4692 | static void bond_setup(struct net_device *bond_dev) |
1da177e4 | 4693 | { |
454d7c9b | 4694 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 4695 | |
1da177e4 LT |
4696 | /* initialize rwlocks */ |
4697 | rwlock_init(&bond->lock); | |
4698 | rwlock_init(&bond->curr_slave_lock); | |
4699 | ||
d2991f75 | 4700 | bond->params = bonding_defaults; |
1da177e4 LT |
4701 | |
4702 | /* Initialize pointers */ | |
1da177e4 LT |
4703 | bond->dev = bond_dev; |
4704 | INIT_LIST_HEAD(&bond->vlan_list); | |
4705 | ||
4706 | /* Initialize the device entry points */ | |
181470fc | 4707 | ether_setup(bond_dev); |
eb7cc59a | 4708 | bond_dev->netdev_ops = &bond_netdev_ops; |
8531c5ff | 4709 | bond_dev->ethtool_ops = &bond_ethtool_ops; |
169a3e66 | 4710 | bond_set_mode_ops(bond, bond->params.mode); |
1da177e4 | 4711 | |
9e2e61fb | 4712 | bond_dev->destructor = bond_destructor; |
1da177e4 LT |
4713 | |
4714 | /* Initialize the device options */ | |
4715 | bond_dev->tx_queue_len = 0; | |
4716 | bond_dev->flags |= IFF_MASTER|IFF_MULTICAST; | |
0b680e75 | 4717 | bond_dev->priv_flags |= IFF_BONDING; |
181470fc SH |
4718 | bond_dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; |
4719 | ||
6cf3f41e JV |
4720 | if (bond->params.arp_interval) |
4721 | bond_dev->priv_flags |= IFF_MASTER_ARPMON; | |
1da177e4 LT |
4722 | |
4723 | /* At first, we block adding VLANs. That's the only way to | |
4724 | * prevent problems that occur when adding VLANs over an | |
4725 | * empty bond. The block will be removed once non-challenged | |
4726 | * slaves are enslaved. | |
4727 | */ | |
4728 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; | |
4729 | ||
932ff279 | 4730 | /* don't acquire bond device's netif_tx_lock when |
1da177e4 LT |
4731 | * transmitting */ |
4732 | bond_dev->features |= NETIF_F_LLTX; | |
4733 | ||
4734 | /* By default, we declare the bond to be fully | |
4735 | * VLAN hardware accelerated capable. Special | |
4736 | * care is taken in the various xmit functions | |
4737 | * when there are slaves that are not hw accel | |
4738 | * capable | |
4739 | */ | |
1da177e4 LT |
4740 | bond_dev->features |= (NETIF_F_HW_VLAN_TX | |
4741 | NETIF_F_HW_VLAN_RX | | |
4742 | NETIF_F_HW_VLAN_FILTER); | |
4743 | ||
e6599c2e ED |
4744 | /* By default, we enable GRO on bonding devices. |
4745 | * Actual support requires lowlevel drivers are GRO ready. | |
4746 | */ | |
4747 | bond_dev->features |= NETIF_F_GRO; | |
1da177e4 LT |
4748 | } |
4749 | ||
fdaea7a9 JV |
4750 | static void bond_work_cancel_all(struct bonding *bond) |
4751 | { | |
4752 | write_lock_bh(&bond->lock); | |
4753 | bond->kill_timers = 1; | |
4754 | write_unlock_bh(&bond->lock); | |
4755 | ||
4756 | if (bond->params.miimon && delayed_work_pending(&bond->mii_work)) | |
4757 | cancel_delayed_work(&bond->mii_work); | |
4758 | ||
4759 | if (bond->params.arp_interval && delayed_work_pending(&bond->arp_work)) | |
4760 | cancel_delayed_work(&bond->arp_work); | |
4761 | ||
4762 | if (bond->params.mode == BOND_MODE_ALB && | |
4763 | delayed_work_pending(&bond->alb_work)) | |
4764 | cancel_delayed_work(&bond->alb_work); | |
4765 | ||
4766 | if (bond->params.mode == BOND_MODE_8023AD && | |
4767 | delayed_work_pending(&bond->ad_work)) | |
4768 | cancel_delayed_work(&bond->ad_work); | |
5a37e8ca FL |
4769 | |
4770 | if (delayed_work_pending(&bond->mcast_work)) | |
4771 | cancel_delayed_work(&bond->mcast_work); | |
fdaea7a9 JV |
4772 | } |
4773 | ||
c67dfb29 EB |
4774 | /* |
4775 | * Destroy a bonding device. | |
4776 | * Must be under rtnl_lock when this function is called. | |
4777 | */ | |
4778 | static void bond_uninit(struct net_device *bond_dev) | |
a434e43f | 4779 | { |
454d7c9b | 4780 | struct bonding *bond = netdev_priv(bond_dev); |
f35188fa | 4781 | struct vlan_entry *vlan, *tmp; |
a434e43f | 4782 | |
f6dc31a8 WC |
4783 | bond_netpoll_cleanup(bond_dev); |
4784 | ||
c67dfb29 EB |
4785 | /* Release the bonded slaves */ |
4786 | bond_release_all(bond_dev); | |
4787 | ||
a434e43f JV |
4788 | list_del(&bond->bond_list); |
4789 | ||
4790 | bond_work_cancel_all(bond); | |
4791 | ||
a434e43f | 4792 | bond_remove_proc_entry(bond); |
c67dfb29 | 4793 | |
22bedad3 | 4794 | __hw_addr_flush(&bond->mc_list); |
f35188fa JV |
4795 | |
4796 | list_for_each_entry_safe(vlan, tmp, &bond->vlan_list, vlan_list) { | |
4797 | list_del(&vlan->vlan_list); | |
4798 | kfree(vlan); | |
4799 | } | |
a434e43f JV |
4800 | } |
4801 | ||
1da177e4 LT |
4802 | /*------------------------- Module initialization ---------------------------*/ |
4803 | ||
4804 | /* | |
4805 | * Convert string input module parms. Accept either the | |
ece95f7f JV |
4806 | * number of the mode or its string name. A bit complicated because |
4807 | * some mode names are substrings of other names, and calls from sysfs | |
4808 | * may have whitespace in the name (trailing newlines, for example). | |
1da177e4 | 4809 | */ |
325dcf7a | 4810 | int bond_parse_parm(const char *buf, const struct bond_parm_tbl *tbl) |
1da177e4 | 4811 | { |
54b87323 | 4812 | int modeint = -1, i, rv; |
a42e534f | 4813 | char *p, modestr[BOND_MAX_MODENAME_LEN + 1] = { 0, }; |
ece95f7f | 4814 | |
a42e534f JV |
4815 | for (p = (char *)buf; *p; p++) |
4816 | if (!(isdigit(*p) || isspace(*p))) | |
4817 | break; | |
4818 | ||
4819 | if (*p) | |
ece95f7f | 4820 | rv = sscanf(buf, "%20s", modestr); |
a42e534f | 4821 | else |
54b87323 | 4822 | rv = sscanf(buf, "%d", &modeint); |
a42e534f JV |
4823 | |
4824 | if (!rv) | |
4825 | return -1; | |
1da177e4 LT |
4826 | |
4827 | for (i = 0; tbl[i].modename; i++) { | |
54b87323 | 4828 | if (modeint == tbl[i].mode) |
ece95f7f JV |
4829 | return tbl[i].mode; |
4830 | if (strcmp(modestr, tbl[i].modename) == 0) | |
1da177e4 | 4831 | return tbl[i].mode; |
1da177e4 LT |
4832 | } |
4833 | ||
4834 | return -1; | |
4835 | } | |
4836 | ||
4837 | static int bond_check_params(struct bond_params *params) | |
4838 | { | |
a549952a | 4839 | int arp_validate_value, fail_over_mac_value, primary_reselect_value; |
f5b2b966 | 4840 | |
1da177e4 LT |
4841 | /* |
4842 | * Convert string parameters. | |
4843 | */ | |
4844 | if (mode) { | |
4845 | bond_mode = bond_parse_parm(mode, bond_mode_tbl); | |
4846 | if (bond_mode == -1) { | |
a4aee5c8 | 4847 | pr_err("Error: Invalid bonding mode \"%s\"\n", |
1da177e4 LT |
4848 | mode == NULL ? "NULL" : mode); |
4849 | return -EINVAL; | |
4850 | } | |
4851 | } | |
4852 | ||
169a3e66 JV |
4853 | if (xmit_hash_policy) { |
4854 | if ((bond_mode != BOND_MODE_XOR) && | |
4855 | (bond_mode != BOND_MODE_8023AD)) { | |
a4aee5c8 | 4856 | pr_info("xmit_hash_policy param is irrelevant in mode %s\n", |
169a3e66 JV |
4857 | bond_mode_name(bond_mode)); |
4858 | } else { | |
4859 | xmit_hashtype = bond_parse_parm(xmit_hash_policy, | |
4860 | xmit_hashtype_tbl); | |
4861 | if (xmit_hashtype == -1) { | |
a4aee5c8 | 4862 | pr_err("Error: Invalid xmit_hash_policy \"%s\"\n", |
3d632c3f | 4863 | xmit_hash_policy == NULL ? "NULL" : |
169a3e66 JV |
4864 | xmit_hash_policy); |
4865 | return -EINVAL; | |
4866 | } | |
4867 | } | |
4868 | } | |
4869 | ||
1da177e4 LT |
4870 | if (lacp_rate) { |
4871 | if (bond_mode != BOND_MODE_8023AD) { | |
a4aee5c8 JP |
4872 | pr_info("lacp_rate param is irrelevant in mode %s\n", |
4873 | bond_mode_name(bond_mode)); | |
1da177e4 LT |
4874 | } else { |
4875 | lacp_fast = bond_parse_parm(lacp_rate, bond_lacp_tbl); | |
4876 | if (lacp_fast == -1) { | |
a4aee5c8 | 4877 | pr_err("Error: Invalid lacp rate \"%s\"\n", |
1da177e4 LT |
4878 | lacp_rate == NULL ? "NULL" : lacp_rate); |
4879 | return -EINVAL; | |
4880 | } | |
4881 | } | |
4882 | } | |
4883 | ||
fd989c83 JV |
4884 | if (ad_select) { |
4885 | params->ad_select = bond_parse_parm(ad_select, ad_select_tbl); | |
4886 | if (params->ad_select == -1) { | |
a4aee5c8 | 4887 | pr_err("Error: Invalid ad_select \"%s\"\n", |
fd989c83 JV |
4888 | ad_select == NULL ? "NULL" : ad_select); |
4889 | return -EINVAL; | |
4890 | } | |
4891 | ||
4892 | if (bond_mode != BOND_MODE_8023AD) { | |
a4aee5c8 | 4893 | pr_warning("ad_select param only affects 802.3ad mode\n"); |
fd989c83 JV |
4894 | } |
4895 | } else { | |
4896 | params->ad_select = BOND_AD_STABLE; | |
4897 | } | |
4898 | ||
f5841306 | 4899 | if (max_bonds < 0) { |
a4aee5c8 JP |
4900 | pr_warning("Warning: max_bonds (%d) not in range %d-%d, so it was reset to BOND_DEFAULT_MAX_BONDS (%d)\n", |
4901 | max_bonds, 0, INT_MAX, BOND_DEFAULT_MAX_BONDS); | |
1da177e4 LT |
4902 | max_bonds = BOND_DEFAULT_MAX_BONDS; |
4903 | } | |
4904 | ||
4905 | if (miimon < 0) { | |
a4aee5c8 JP |
4906 | pr_warning("Warning: miimon module parameter (%d), not in range 0-%d, so it was reset to %d\n", |
4907 | miimon, INT_MAX, BOND_LINK_MON_INTERV); | |
1da177e4 LT |
4908 | miimon = BOND_LINK_MON_INTERV; |
4909 | } | |
4910 | ||
4911 | if (updelay < 0) { | |
a4aee5c8 JP |
4912 | pr_warning("Warning: updelay module parameter (%d), not in range 0-%d, so it was reset to 0\n", |
4913 | updelay, INT_MAX); | |
1da177e4 LT |
4914 | updelay = 0; |
4915 | } | |
4916 | ||
4917 | if (downdelay < 0) { | |
a4aee5c8 JP |
4918 | pr_warning("Warning: downdelay module parameter (%d), not in range 0-%d, so it was reset to 0\n", |
4919 | downdelay, INT_MAX); | |
1da177e4 LT |
4920 | downdelay = 0; |
4921 | } | |
4922 | ||
4923 | if ((use_carrier != 0) && (use_carrier != 1)) { | |
a4aee5c8 JP |
4924 | pr_warning("Warning: use_carrier module parameter (%d), not of valid value (0/1), so it was set to 1\n", |
4925 | use_carrier); | |
1da177e4 LT |
4926 | use_carrier = 1; |
4927 | } | |
4928 | ||
7893b249 | 4929 | if (num_grat_arp < 0 || num_grat_arp > 255) { |
2381a55c | 4930 | pr_warning("Warning: num_grat_arp (%d) not in range 0-255 so it was reset to 1\n", |
a4aee5c8 | 4931 | num_grat_arp); |
7893b249 MS |
4932 | num_grat_arp = 1; |
4933 | } | |
4934 | ||
305d552a | 4935 | if (num_unsol_na < 0 || num_unsol_na > 255) { |
2381a55c | 4936 | pr_warning("Warning: num_unsol_na (%d) not in range 0-255 so it was reset to 1\n", |
a4aee5c8 | 4937 | num_unsol_na); |
305d552a BH |
4938 | num_unsol_na = 1; |
4939 | } | |
4940 | ||
1da177e4 LT |
4941 | /* reset values for 802.3ad */ |
4942 | if (bond_mode == BOND_MODE_8023AD) { | |
4943 | if (!miimon) { | |
a4aee5c8 | 4944 | 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 | 4945 | pr_warning("Forcing miimon to 100msec\n"); |
1da177e4 LT |
4946 | miimon = 100; |
4947 | } | |
4948 | } | |
4949 | ||
bb1d9123 AG |
4950 | if (tx_queues < 1 || tx_queues > 255) { |
4951 | pr_warning("Warning: tx_queues (%d) should be between " | |
4952 | "1 and 255, resetting to %d\n", | |
4953 | tx_queues, BOND_DEFAULT_TX_QUEUES); | |
4954 | tx_queues = BOND_DEFAULT_TX_QUEUES; | |
4955 | } | |
4956 | ||
ebd8e497 AG |
4957 | if ((all_slaves_active != 0) && (all_slaves_active != 1)) { |
4958 | pr_warning("Warning: all_slaves_active module parameter (%d), " | |
4959 | "not of valid value (0/1), so it was set to " | |
4960 | "0\n", all_slaves_active); | |
4961 | all_slaves_active = 0; | |
4962 | } | |
4963 | ||
c2952c31 FL |
4964 | if (resend_igmp < 0 || resend_igmp > 255) { |
4965 | pr_warning("Warning: resend_igmp (%d) should be between " | |
4966 | "0 and 255, resetting to %d\n", | |
4967 | resend_igmp, BOND_DEFAULT_RESEND_IGMP); | |
4968 | resend_igmp = BOND_DEFAULT_RESEND_IGMP; | |
4969 | } | |
4970 | ||
1da177e4 LT |
4971 | /* reset values for TLB/ALB */ |
4972 | if ((bond_mode == BOND_MODE_TLB) || | |
4973 | (bond_mode == BOND_MODE_ALB)) { | |
4974 | if (!miimon) { | |
a4aee5c8 | 4975 | 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 | 4976 | pr_warning("Forcing miimon to 100msec\n"); |
1da177e4 LT |
4977 | miimon = 100; |
4978 | } | |
4979 | } | |
4980 | ||
4981 | if (bond_mode == BOND_MODE_ALB) { | |
a4aee5c8 JP |
4982 | 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", |
4983 | updelay); | |
1da177e4 LT |
4984 | } |
4985 | ||
4986 | if (!miimon) { | |
4987 | if (updelay || downdelay) { | |
4988 | /* just warn the user the up/down delay will have | |
4989 | * no effect since miimon is zero... | |
4990 | */ | |
a4aee5c8 JP |
4991 | 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", |
4992 | updelay, downdelay); | |
1da177e4 LT |
4993 | } |
4994 | } else { | |
4995 | /* don't allow arp monitoring */ | |
4996 | if (arp_interval) { | |
a4aee5c8 JP |
4997 | pr_warning("Warning: miimon (%d) and arp_interval (%d) can't be used simultaneously, disabling ARP monitoring\n", |
4998 | miimon, arp_interval); | |
1da177e4 LT |
4999 | arp_interval = 0; |
5000 | } | |
5001 | ||
5002 | if ((updelay % miimon) != 0) { | |
a4aee5c8 JP |
5003 | pr_warning("Warning: updelay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", |
5004 | updelay, miimon, | |
5005 | (updelay / miimon) * miimon); | |
1da177e4 LT |
5006 | } |
5007 | ||
5008 | updelay /= miimon; | |
5009 | ||
5010 | if ((downdelay % miimon) != 0) { | |
a4aee5c8 JP |
5011 | pr_warning("Warning: downdelay (%d) is not a multiple of miimon (%d), downdelay rounded to %d ms\n", |
5012 | downdelay, miimon, | |
5013 | (downdelay / miimon) * miimon); | |
1da177e4 LT |
5014 | } |
5015 | ||
5016 | downdelay /= miimon; | |
5017 | } | |
5018 | ||
5019 | if (arp_interval < 0) { | |
a4aee5c8 JP |
5020 | pr_warning("Warning: arp_interval module parameter (%d) , not in range 0-%d, so it was reset to %d\n", |
5021 | arp_interval, INT_MAX, BOND_LINK_ARP_INTERV); | |
1da177e4 LT |
5022 | arp_interval = BOND_LINK_ARP_INTERV; |
5023 | } | |
5024 | ||
5025 | for (arp_ip_count = 0; | |
5026 | (arp_ip_count < BOND_MAX_ARP_TARGETS) && arp_ip_target[arp_ip_count]; | |
5027 | arp_ip_count++) { | |
5028 | /* not complete check, but should be good enough to | |
5029 | catch mistakes */ | |
5030 | if (!isdigit(arp_ip_target[arp_ip_count][0])) { | |
a4aee5c8 JP |
5031 | pr_warning("Warning: bad arp_ip_target module parameter (%s), ARP monitoring will not be performed\n", |
5032 | arp_ip_target[arp_ip_count]); | |
1da177e4 LT |
5033 | arp_interval = 0; |
5034 | } else { | |
d3bb52b0 | 5035 | __be32 ip = in_aton(arp_ip_target[arp_ip_count]); |
1da177e4 LT |
5036 | arp_target[arp_ip_count] = ip; |
5037 | } | |
5038 | } | |
5039 | ||
5040 | if (arp_interval && !arp_ip_count) { | |
5041 | /* don't allow arping if no arp_ip_target given... */ | |
a4aee5c8 JP |
5042 | pr_warning("Warning: arp_interval module parameter (%d) specified without providing an arp_ip_target parameter, arp_interval was reset to 0\n", |
5043 | arp_interval); | |
1da177e4 LT |
5044 | arp_interval = 0; |
5045 | } | |
5046 | ||
f5b2b966 JV |
5047 | if (arp_validate) { |
5048 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) { | |
a4aee5c8 | 5049 | pr_err("arp_validate only supported in active-backup mode\n"); |
f5b2b966 JV |
5050 | return -EINVAL; |
5051 | } | |
5052 | if (!arp_interval) { | |
a4aee5c8 | 5053 | pr_err("arp_validate requires arp_interval\n"); |
f5b2b966 JV |
5054 | return -EINVAL; |
5055 | } | |
5056 | ||
5057 | arp_validate_value = bond_parse_parm(arp_validate, | |
5058 | arp_validate_tbl); | |
5059 | if (arp_validate_value == -1) { | |
a4aee5c8 | 5060 | pr_err("Error: invalid arp_validate \"%s\"\n", |
f5b2b966 JV |
5061 | arp_validate == NULL ? "NULL" : arp_validate); |
5062 | return -EINVAL; | |
5063 | } | |
5064 | } else | |
5065 | arp_validate_value = 0; | |
5066 | ||
1da177e4 | 5067 | if (miimon) { |
a4aee5c8 | 5068 | pr_info("MII link monitoring set to %d ms\n", miimon); |
1da177e4 LT |
5069 | } else if (arp_interval) { |
5070 | int i; | |
5071 | ||
a4aee5c8 JP |
5072 | pr_info("ARP monitoring set to %d ms, validate %s, with %d target(s):", |
5073 | arp_interval, | |
5074 | arp_validate_tbl[arp_validate_value].modename, | |
5075 | arp_ip_count); | |
1da177e4 LT |
5076 | |
5077 | for (i = 0; i < arp_ip_count; i++) | |
e5e2a8fd | 5078 | pr_info(" %s", arp_ip_target[i]); |
1da177e4 | 5079 | |
e5e2a8fd | 5080 | pr_info("\n"); |
1da177e4 | 5081 | |
b8a9787e | 5082 | } else if (max_bonds) { |
1da177e4 LT |
5083 | /* miimon and arp_interval not set, we need one so things |
5084 | * work as expected, see bonding.txt for details | |
5085 | */ | |
a4aee5c8 | 5086 | 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 |
5087 | } |
5088 | ||
5089 | if (primary && !USES_PRIMARY(bond_mode)) { | |
5090 | /* currently, using a primary only makes sense | |
5091 | * in active backup, TLB or ALB modes | |
5092 | */ | |
a4aee5c8 JP |
5093 | pr_warning("Warning: %s primary device specified but has no effect in %s mode\n", |
5094 | primary, bond_mode_name(bond_mode)); | |
1da177e4 LT |
5095 | primary = NULL; |
5096 | } | |
5097 | ||
a549952a JP |
5098 | if (primary && primary_reselect) { |
5099 | primary_reselect_value = bond_parse_parm(primary_reselect, | |
5100 | pri_reselect_tbl); | |
5101 | if (primary_reselect_value == -1) { | |
a4aee5c8 | 5102 | pr_err("Error: Invalid primary_reselect \"%s\"\n", |
a549952a JP |
5103 | primary_reselect == |
5104 | NULL ? "NULL" : primary_reselect); | |
5105 | return -EINVAL; | |
5106 | } | |
5107 | } else { | |
5108 | primary_reselect_value = BOND_PRI_RESELECT_ALWAYS; | |
5109 | } | |
5110 | ||
3915c1e8 JV |
5111 | if (fail_over_mac) { |
5112 | fail_over_mac_value = bond_parse_parm(fail_over_mac, | |
5113 | fail_over_mac_tbl); | |
5114 | if (fail_over_mac_value == -1) { | |
a4aee5c8 | 5115 | pr_err("Error: invalid fail_over_mac \"%s\"\n", |
3915c1e8 JV |
5116 | arp_validate == NULL ? "NULL" : arp_validate); |
5117 | return -EINVAL; | |
5118 | } | |
5119 | ||
5120 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) | |
a4aee5c8 | 5121 | pr_warning("Warning: fail_over_mac only affects active-backup mode.\n"); |
3915c1e8 JV |
5122 | } else { |
5123 | fail_over_mac_value = BOND_FOM_NONE; | |
5124 | } | |
dd957c57 | 5125 | |
1da177e4 LT |
5126 | /* fill params struct with the proper values */ |
5127 | params->mode = bond_mode; | |
169a3e66 | 5128 | params->xmit_policy = xmit_hashtype; |
1da177e4 | 5129 | params->miimon = miimon; |
7893b249 | 5130 | params->num_grat_arp = num_grat_arp; |
305d552a | 5131 | params->num_unsol_na = num_unsol_na; |
1da177e4 | 5132 | params->arp_interval = arp_interval; |
f5b2b966 | 5133 | params->arp_validate = arp_validate_value; |
1da177e4 LT |
5134 | params->updelay = updelay; |
5135 | params->downdelay = downdelay; | |
5136 | params->use_carrier = use_carrier; | |
5137 | params->lacp_fast = lacp_fast; | |
5138 | params->primary[0] = 0; | |
a549952a | 5139 | params->primary_reselect = primary_reselect_value; |
3915c1e8 | 5140 | params->fail_over_mac = fail_over_mac_value; |
bb1d9123 | 5141 | params->tx_queues = tx_queues; |
ebd8e497 | 5142 | params->all_slaves_active = all_slaves_active; |
c2952c31 | 5143 | params->resend_igmp = resend_igmp; |
1da177e4 LT |
5144 | |
5145 | if (primary) { | |
5146 | strncpy(params->primary, primary, IFNAMSIZ); | |
5147 | params->primary[IFNAMSIZ - 1] = 0; | |
5148 | } | |
5149 | ||
5150 | memcpy(params->arp_targets, arp_target, sizeof(arp_target)); | |
5151 | ||
5152 | return 0; | |
5153 | } | |
5154 | ||
0daa2303 | 5155 | static struct lock_class_key bonding_netdev_xmit_lock_key; |
cf508b12 | 5156 | static struct lock_class_key bonding_netdev_addr_lock_key; |
0daa2303 | 5157 | |
e8a0464c DM |
5158 | static void bond_set_lockdep_class_one(struct net_device *dev, |
5159 | struct netdev_queue *txq, | |
5160 | void *_unused) | |
c773e847 DM |
5161 | { |
5162 | lockdep_set_class(&txq->_xmit_lock, | |
5163 | &bonding_netdev_xmit_lock_key); | |
5164 | } | |
5165 | ||
5166 | static void bond_set_lockdep_class(struct net_device *dev) | |
5167 | { | |
cf508b12 DM |
5168 | lockdep_set_class(&dev->addr_list_lock, |
5169 | &bonding_netdev_addr_lock_key); | |
e8a0464c | 5170 | netdev_for_each_tx_queue(dev, bond_set_lockdep_class_one, NULL); |
c773e847 DM |
5171 | } |
5172 | ||
181470fc SH |
5173 | /* |
5174 | * Called from registration process | |
5175 | */ | |
5176 | static int bond_init(struct net_device *bond_dev) | |
5177 | { | |
5178 | struct bonding *bond = netdev_priv(bond_dev); | |
ec87fd3b | 5179 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); |
181470fc SH |
5180 | |
5181 | pr_debug("Begin bond_init for %s\n", bond_dev->name); | |
5182 | ||
5183 | bond->wq = create_singlethread_workqueue(bond_dev->name); | |
5184 | if (!bond->wq) | |
5185 | return -ENOMEM; | |
5186 | ||
5187 | bond_set_lockdep_class(bond_dev); | |
5188 | ||
5189 | netif_carrier_off(bond_dev); | |
5190 | ||
5191 | bond_create_proc_entry(bond); | |
ec87fd3b | 5192 | list_add_tail(&bond->bond_list, &bn->dev_list); |
181470fc | 5193 | |
6151b3d4 | 5194 | bond_prepare_sysfs_group(bond); |
22bedad3 JP |
5195 | |
5196 | __hw_addr_init(&bond->mc_list); | |
181470fc SH |
5197 | return 0; |
5198 | } | |
5199 | ||
88ead977 EB |
5200 | static int bond_validate(struct nlattr *tb[], struct nlattr *data[]) |
5201 | { | |
5202 | if (tb[IFLA_ADDRESS]) { | |
5203 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
5204 | return -EINVAL; | |
5205 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
5206 | return -EADDRNOTAVAIL; | |
5207 | } | |
5208 | return 0; | |
5209 | } | |
5210 | ||
5211 | static struct rtnl_link_ops bond_link_ops __read_mostly = { | |
5212 | .kind = "bond", | |
6639104b | 5213 | .priv_size = sizeof(struct bonding), |
88ead977 EB |
5214 | .setup = bond_setup, |
5215 | .validate = bond_validate, | |
5216 | }; | |
5217 | ||
dfe60397 | 5218 | /* Create a new bond based on the specified name and bonding parameters. |
e4b91c48 | 5219 | * If name is NULL, obtain a suitable "bond%d" name for us. |
dfe60397 MW |
5220 | * Caller must NOT hold rtnl_lock; we need to release it here before we |
5221 | * set up our sysfs entries. | |
5222 | */ | |
ec87fd3b | 5223 | int bond_create(struct net *net, const char *name) |
dfe60397 MW |
5224 | { |
5225 | struct net_device *bond_dev; | |
5226 | int res; | |
5227 | ||
5228 | rtnl_lock(); | |
027ea041 | 5229 | |
bb1d9123 AG |
5230 | bond_dev = alloc_netdev_mq(sizeof(struct bonding), name ? name : "", |
5231 | bond_setup, tx_queues); | |
dfe60397 | 5232 | if (!bond_dev) { |
a4aee5c8 | 5233 | pr_err("%s: eek! can't alloc netdev!\n", name); |
9e2e61fb AW |
5234 | rtnl_unlock(); |
5235 | return -ENOMEM; | |
dfe60397 MW |
5236 | } |
5237 | ||
ec87fd3b | 5238 | dev_net_set(bond_dev, net); |
88ead977 EB |
5239 | bond_dev->rtnl_link_ops = &bond_link_ops; |
5240 | ||
e4b91c48 JV |
5241 | if (!name) { |
5242 | res = dev_alloc_name(bond_dev, "bond%d"); | |
5243 | if (res < 0) | |
9e2e61fb | 5244 | goto out; |
27e6f065 NH |
5245 | } else { |
5246 | /* | |
5247 | * If we're given a name to register | |
5248 | * we need to ensure that its not already | |
5249 | * registered | |
5250 | */ | |
5251 | res = -EEXIST; | |
5252 | if (__dev_get_by_name(net, name) != NULL) | |
5253 | goto out; | |
e4b91c48 JV |
5254 | } |
5255 | ||
dfe60397 | 5256 | res = register_netdevice(bond_dev); |
0daa2303 | 5257 | |
30c15ba9 | 5258 | out: |
7e083840 | 5259 | rtnl_unlock(); |
9e2e61fb AW |
5260 | if (res < 0) |
5261 | bond_destructor(bond_dev); | |
30c15ba9 | 5262 | return res; |
dfe60397 MW |
5263 | } |
5264 | ||
2c8c1e72 | 5265 | static int __net_init bond_net_init(struct net *net) |
ec87fd3b | 5266 | { |
15449745 | 5267 | struct bond_net *bn = net_generic(net, bond_net_id); |
ec87fd3b EB |
5268 | |
5269 | bn->net = net; | |
5270 | INIT_LIST_HEAD(&bn->dev_list); | |
5271 | ||
ec87fd3b | 5272 | bond_create_proc_dir(bn); |
15449745 EB |
5273 | |
5274 | return 0; | |
ec87fd3b EB |
5275 | } |
5276 | ||
2c8c1e72 | 5277 | static void __net_exit bond_net_exit(struct net *net) |
ec87fd3b | 5278 | { |
15449745 | 5279 | struct bond_net *bn = net_generic(net, bond_net_id); |
ec87fd3b EB |
5280 | |
5281 | bond_destroy_proc_dir(bn); | |
ec87fd3b EB |
5282 | } |
5283 | ||
5284 | static struct pernet_operations bond_net_ops = { | |
5285 | .init = bond_net_init, | |
5286 | .exit = bond_net_exit, | |
15449745 EB |
5287 | .id = &bond_net_id, |
5288 | .size = sizeof(struct bond_net), | |
ec87fd3b EB |
5289 | }; |
5290 | ||
1da177e4 LT |
5291 | static int __init bonding_init(void) |
5292 | { | |
1da177e4 LT |
5293 | int i; |
5294 | int res; | |
5295 | ||
3d632c3f | 5296 | pr_info("%s", version); |
1da177e4 | 5297 | |
dfe60397 | 5298 | res = bond_check_params(&bonding_defaults); |
3d632c3f | 5299 | if (res) |
dfe60397 | 5300 | goto out; |
1da177e4 | 5301 | |
15449745 | 5302 | res = register_pernet_subsys(&bond_net_ops); |
ec87fd3b EB |
5303 | if (res) |
5304 | goto out; | |
027ea041 | 5305 | |
88ead977 EB |
5306 | res = rtnl_link_register(&bond_link_ops); |
5307 | if (res) | |
6639104b | 5308 | goto err_link; |
88ead977 | 5309 | |
1da177e4 | 5310 | for (i = 0; i < max_bonds; i++) { |
ec87fd3b | 5311 | res = bond_create(&init_net, NULL); |
dfe60397 MW |
5312 | if (res) |
5313 | goto err; | |
1da177e4 LT |
5314 | } |
5315 | ||
b76cdba9 MW |
5316 | res = bond_create_sysfs(); |
5317 | if (res) | |
5318 | goto err; | |
5319 | ||
e843fa50 | 5320 | |
1da177e4 | 5321 | register_netdevice_notifier(&bond_netdev_notifier); |
c3ade5ca | 5322 | register_inetaddr_notifier(&bond_inetaddr_notifier); |
305d552a | 5323 | bond_register_ipv6_notifier(); |
dfe60397 | 5324 | out: |
1da177e4 | 5325 | return res; |
88ead977 EB |
5326 | err: |
5327 | rtnl_link_unregister(&bond_link_ops); | |
6639104b | 5328 | err_link: |
15449745 | 5329 | unregister_pernet_subsys(&bond_net_ops); |
88ead977 | 5330 | goto out; |
dfe60397 | 5331 | |
1da177e4 LT |
5332 | } |
5333 | ||
5334 | static void __exit bonding_exit(void) | |
5335 | { | |
5336 | unregister_netdevice_notifier(&bond_netdev_notifier); | |
c3ade5ca | 5337 | unregister_inetaddr_notifier(&bond_inetaddr_notifier); |
305d552a | 5338 | bond_unregister_ipv6_notifier(); |
1da177e4 | 5339 | |
ae68c398 PE |
5340 | bond_destroy_sysfs(); |
5341 | ||
88ead977 | 5342 | rtnl_link_unregister(&bond_link_ops); |
15449745 | 5343 | unregister_pernet_subsys(&bond_net_ops); |
e843fa50 NH |
5344 | |
5345 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
fb4fa76a NH |
5346 | /* |
5347 | * Make sure we don't have an imbalance on our netpoll blocking | |
5348 | */ | |
5349 | WARN_ON(atomic_read(&netpoll_block_tx)); | |
e843fa50 | 5350 | #endif |
1da177e4 LT |
5351 | } |
5352 | ||
5353 | module_init(bonding_init); | |
5354 | module_exit(bonding_exit); | |
5355 | MODULE_LICENSE("GPL"); | |
5356 | MODULE_VERSION(DRV_VERSION); | |
5357 | MODULE_DESCRIPTION(DRV_DESCRIPTION ", v" DRV_VERSION); | |
5358 | MODULE_AUTHOR("Thomas Davis, tadavis@lbl.gov and many others"); | |
88ead977 | 5359 | MODULE_ALIAS_RTNL_LINK("bond"); |