Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * originally based on the dummy device. | |
3 | * | |
4 | * Copyright 1999, Thomas Davis, tadavis@lbl.gov. | |
5 | * Licensed under the GPL. Based on dummy.c, and eql.c devices. | |
6 | * | |
7 | * bonding.c: an Ethernet Bonding driver | |
8 | * | |
9 | * This is useful to talk to a Cisco EtherChannel compatible equipment: | |
10 | * Cisco 5500 | |
11 | * Sun Trunking (Solaris) | |
12 | * Alteon AceDirector Trunks | |
13 | * Linux Bonding | |
14 | * and probably many L2 switches ... | |
15 | * | |
16 | * How it works: | |
17 | * ifconfig bond0 ipaddress netmask up | |
18 | * will setup a network device, with an ip address. No mac address | |
19 | * will be assigned at this time. The hw mac address will come from | |
20 | * the first slave bonded to the channel. All slaves will then use | |
21 | * this hw mac address. | |
22 | * | |
23 | * ifconfig bond0 down | |
24 | * will release all slaves, marking them as down. | |
25 | * | |
26 | * ifenslave bond0 eth0 | |
27 | * will attach eth0 to bond0 as a slave. eth0 hw mac address will either | |
28 | * a: be used as initial mac address | |
29 | * b: if a hw mac address already is there, eth0's hw mac address | |
30 | * will then be set from bond0. | |
31 | * | |
1da177e4 LT |
32 | */ |
33 | ||
a4aee5c8 JP |
34 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
35 | ||
1da177e4 LT |
36 | #include <linux/kernel.h> |
37 | #include <linux/module.h> | |
1da177e4 LT |
38 | #include <linux/types.h> |
39 | #include <linux/fcntl.h> | |
40 | #include <linux/interrupt.h> | |
41 | #include <linux/ptrace.h> | |
42 | #include <linux/ioport.h> | |
43 | #include <linux/in.h> | |
169a3e66 | 44 | #include <net/ip.h> |
1da177e4 | 45 | #include <linux/ip.h> |
169a3e66 JV |
46 | #include <linux/tcp.h> |
47 | #include <linux/udp.h> | |
1da177e4 LT |
48 | #include <linux/slab.h> |
49 | #include <linux/string.h> | |
50 | #include <linux/init.h> | |
51 | #include <linux/timer.h> | |
52 | #include <linux/socket.h> | |
53 | #include <linux/ctype.h> | |
54 | #include <linux/inet.h> | |
55 | #include <linux/bitops.h> | |
3d632c3f | 56 | #include <linux/io.h> |
1da177e4 | 57 | #include <asm/system.h> |
1da177e4 | 58 | #include <asm/dma.h> |
3d632c3f | 59 | #include <linux/uaccess.h> |
1da177e4 LT |
60 | #include <linux/errno.h> |
61 | #include <linux/netdevice.h> | |
f6dc31a8 | 62 | #include <linux/netpoll.h> |
1da177e4 | 63 | #include <linux/inetdevice.h> |
a816c7c7 | 64 | #include <linux/igmp.h> |
1da177e4 LT |
65 | #include <linux/etherdevice.h> |
66 | #include <linux/skbuff.h> | |
67 | #include <net/sock.h> | |
68 | #include <linux/rtnetlink.h> | |
69 | #include <linux/proc_fs.h> | |
70 | #include <linux/seq_file.h> | |
71 | #include <linux/smp.h> | |
72 | #include <linux/if_ether.h> | |
73 | #include <net/arp.h> | |
74 | #include <linux/mii.h> | |
75 | #include <linux/ethtool.h> | |
76 | #include <linux/if_vlan.h> | |
77 | #include <linux/if_bonding.h> | |
b63bb739 | 78 | #include <linux/jiffies.h> |
c3ade5ca | 79 | #include <net/route.h> |
457c4cbc | 80 | #include <net/net_namespace.h> |
ec87fd3b | 81 | #include <net/netns/generic.h> |
1da177e4 LT |
82 | #include "bonding.h" |
83 | #include "bond_3ad.h" | |
84 | #include "bond_alb.h" | |
85 | ||
86 | /*---------------------------- Module parameters ----------------------------*/ | |
87 | ||
88 | /* monitor all links that often (in milliseconds). <=0 disables monitoring */ | |
89 | #define BOND_LINK_MON_INTERV 0 | |
90 | #define BOND_LINK_ARP_INTERV 0 | |
91 | ||
92 | static int max_bonds = BOND_DEFAULT_MAX_BONDS; | |
bb1d9123 | 93 | static int tx_queues = BOND_DEFAULT_TX_QUEUES; |
7893b249 | 94 | static int num_grat_arp = 1; |
305d552a | 95 | static int num_unsol_na = 1; |
1da177e4 | 96 | static int miimon = BOND_LINK_MON_INTERV; |
3d632c3f SH |
97 | static int updelay; |
98 | static int downdelay; | |
1da177e4 | 99 | static int use_carrier = 1; |
3d632c3f SH |
100 | static char *mode; |
101 | static char *primary; | |
a549952a | 102 | static char *primary_reselect; |
3d632c3f SH |
103 | static char *lacp_rate; |
104 | static char *ad_select; | |
105 | static char *xmit_hash_policy; | |
1da177e4 | 106 | static int arp_interval = BOND_LINK_ARP_INTERV; |
3d632c3f SH |
107 | static char *arp_ip_target[BOND_MAX_ARP_TARGETS]; |
108 | static char *arp_validate; | |
109 | static char *fail_over_mac; | |
ebd8e497 | 110 | static int all_slaves_active = 0; |
d2991f75 | 111 | static struct bond_params bonding_defaults; |
c2952c31 | 112 | static int resend_igmp = BOND_DEFAULT_RESEND_IGMP; |
1da177e4 LT |
113 | |
114 | module_param(max_bonds, int, 0); | |
115 | MODULE_PARM_DESC(max_bonds, "Max number of bonded devices"); | |
bb1d9123 AG |
116 | module_param(tx_queues, int, 0); |
117 | MODULE_PARM_DESC(tx_queues, "Max number of transmit queues (default = 16)"); | |
7893b249 MS |
118 | module_param(num_grat_arp, int, 0644); |
119 | MODULE_PARM_DESC(num_grat_arp, "Number of gratuitous ARP packets to send on failover event"); | |
305d552a BH |
120 | module_param(num_unsol_na, int, 0644); |
121 | MODULE_PARM_DESC(num_unsol_na, "Number of unsolicited IPv6 Neighbor Advertisements packets to send on failover event"); | |
1da177e4 LT |
122 | module_param(miimon, int, 0); |
123 | MODULE_PARM_DESC(miimon, "Link check interval in milliseconds"); | |
124 | module_param(updelay, int, 0); | |
125 | MODULE_PARM_DESC(updelay, "Delay before considering link up, in milliseconds"); | |
126 | module_param(downdelay, int, 0); | |
2ac47660 MW |
127 | MODULE_PARM_DESC(downdelay, "Delay before considering link down, " |
128 | "in milliseconds"); | |
1da177e4 | 129 | module_param(use_carrier, int, 0); |
2ac47660 MW |
130 | MODULE_PARM_DESC(use_carrier, "Use netif_carrier_ok (vs MII ioctls) in miimon; " |
131 | "0 for off, 1 for on (default)"); | |
1da177e4 | 132 | module_param(mode, charp, 0); |
2ac47660 MW |
133 | MODULE_PARM_DESC(mode, "Mode of operation : 0 for balance-rr, " |
134 | "1 for active-backup, 2 for balance-xor, " | |
135 | "3 for broadcast, 4 for 802.3ad, 5 for balance-tlb, " | |
136 | "6 for balance-alb"); | |
1da177e4 LT |
137 | module_param(primary, charp, 0); |
138 | MODULE_PARM_DESC(primary, "Primary network device to use"); | |
a549952a JP |
139 | module_param(primary_reselect, charp, 0); |
140 | MODULE_PARM_DESC(primary_reselect, "Reselect primary slave " | |
141 | "once it comes up; " | |
142 | "0 for always (default), " | |
143 | "1 for only if speed of primary is " | |
144 | "better, " | |
145 | "2 for only on active slave " | |
146 | "failure"); | |
1da177e4 | 147 | module_param(lacp_rate, charp, 0); |
2ac47660 MW |
148 | MODULE_PARM_DESC(lacp_rate, "LACPDU tx rate to request from 802.3ad partner " |
149 | "(slow/fast)"); | |
fd989c83 JV |
150 | module_param(ad_select, charp, 0); |
151 | MODULE_PARM_DESC(ad_select, "803.ad aggregation selection logic: stable (0, default), bandwidth (1), count (2)"); | |
169a3e66 | 152 | module_param(xmit_hash_policy, charp, 0); |
2ac47660 MW |
153 | MODULE_PARM_DESC(xmit_hash_policy, "XOR hashing method: 0 for layer 2 (default)" |
154 | ", 1 for layer 3+4"); | |
1da177e4 LT |
155 | module_param(arp_interval, int, 0); |
156 | MODULE_PARM_DESC(arp_interval, "arp interval in milliseconds"); | |
157 | module_param_array(arp_ip_target, charp, NULL, 0); | |
158 | MODULE_PARM_DESC(arp_ip_target, "arp targets in n.n.n.n form"); | |
f5b2b966 JV |
159 | module_param(arp_validate, charp, 0); |
160 | MODULE_PARM_DESC(arp_validate, "validate src/dst of ARP probes: none (default), active, backup or all"); | |
3915c1e8 JV |
161 | module_param(fail_over_mac, charp, 0); |
162 | 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 |
163 | module_param(all_slaves_active, int, 0); |
164 | MODULE_PARM_DESC(all_slaves_active, "Keep all frames received on an interface" | |
165 | "by setting active flag for all slaves. " | |
166 | "0 for never (default), 1 for always."); | |
c2952c31 FL |
167 | module_param(resend_igmp, int, 0); |
168 | MODULE_PARM_DESC(resend_igmp, "Number of IGMP membership reports to send on link failure"); | |
1da177e4 LT |
169 | |
170 | /*----------------------------- Global variables ----------------------------*/ | |
171 | ||
f71e1309 | 172 | static const char * const version = |
1da177e4 LT |
173 | DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n"; |
174 | ||
f99189b1 | 175 | int bond_net_id __read_mostly; |
1da177e4 | 176 | |
3d632c3f SH |
177 | static __be32 arp_target[BOND_MAX_ARP_TARGETS]; |
178 | static int arp_ip_count; | |
1da177e4 | 179 | static int bond_mode = BOND_MODE_ROUNDROBIN; |
3d632c3f SH |
180 | static int xmit_hashtype = BOND_XMIT_POLICY_LAYER2; |
181 | static int lacp_fast; | |
90e1795b | 182 | #ifdef CONFIG_NET_POLL_CONTROLLER |
c22d7ac8 | 183 | static int disable_netpoll = 1; |
90e1795b | 184 | #endif |
1da177e4 | 185 | |
e97fd7c6 | 186 | const struct bond_parm_tbl bond_lacp_tbl[] = { |
1da177e4 LT |
187 | { "slow", AD_LACP_SLOW}, |
188 | { "fast", AD_LACP_FAST}, | |
189 | { NULL, -1}, | |
190 | }; | |
191 | ||
e97fd7c6 | 192 | const struct bond_parm_tbl bond_mode_tbl[] = { |
1da177e4 LT |
193 | { "balance-rr", BOND_MODE_ROUNDROBIN}, |
194 | { "active-backup", BOND_MODE_ACTIVEBACKUP}, | |
195 | { "balance-xor", BOND_MODE_XOR}, | |
196 | { "broadcast", BOND_MODE_BROADCAST}, | |
197 | { "802.3ad", BOND_MODE_8023AD}, | |
198 | { "balance-tlb", BOND_MODE_TLB}, | |
199 | { "balance-alb", BOND_MODE_ALB}, | |
200 | { NULL, -1}, | |
201 | }; | |
202 | ||
e97fd7c6 | 203 | const struct bond_parm_tbl xmit_hashtype_tbl[] = { |
169a3e66 JV |
204 | { "layer2", BOND_XMIT_POLICY_LAYER2}, |
205 | { "layer3+4", BOND_XMIT_POLICY_LAYER34}, | |
6f6652be | 206 | { "layer2+3", BOND_XMIT_POLICY_LAYER23}, |
169a3e66 JV |
207 | { NULL, -1}, |
208 | }; | |
209 | ||
e97fd7c6 | 210 | const struct bond_parm_tbl arp_validate_tbl[] = { |
f5b2b966 JV |
211 | { "none", BOND_ARP_VALIDATE_NONE}, |
212 | { "active", BOND_ARP_VALIDATE_ACTIVE}, | |
213 | { "backup", BOND_ARP_VALIDATE_BACKUP}, | |
214 | { "all", BOND_ARP_VALIDATE_ALL}, | |
215 | { NULL, -1}, | |
216 | }; | |
217 | ||
e97fd7c6 | 218 | const struct bond_parm_tbl fail_over_mac_tbl[] = { |
3915c1e8 JV |
219 | { "none", BOND_FOM_NONE}, |
220 | { "active", BOND_FOM_ACTIVE}, | |
221 | { "follow", BOND_FOM_FOLLOW}, | |
222 | { NULL, -1}, | |
223 | }; | |
224 | ||
a549952a JP |
225 | const struct bond_parm_tbl pri_reselect_tbl[] = { |
226 | { "always", BOND_PRI_RESELECT_ALWAYS}, | |
227 | { "better", BOND_PRI_RESELECT_BETTER}, | |
228 | { "failure", BOND_PRI_RESELECT_FAILURE}, | |
229 | { NULL, -1}, | |
230 | }; | |
231 | ||
fd989c83 JV |
232 | struct bond_parm_tbl ad_select_tbl[] = { |
233 | { "stable", BOND_AD_STABLE}, | |
234 | { "bandwidth", BOND_AD_BANDWIDTH}, | |
235 | { "count", BOND_AD_COUNT}, | |
236 | { NULL, -1}, | |
237 | }; | |
238 | ||
1da177e4 LT |
239 | /*-------------------------- Forward declarations ---------------------------*/ |
240 | ||
c3ade5ca | 241 | static void bond_send_gratuitous_arp(struct bonding *bond); |
181470fc | 242 | static int bond_init(struct net_device *bond_dev); |
c67dfb29 | 243 | static void bond_uninit(struct net_device *bond_dev); |
1da177e4 LT |
244 | |
245 | /*---------------------------- General routines -----------------------------*/ | |
246 | ||
4ad072c9 | 247 | static const char *bond_mode_name(int mode) |
1da177e4 | 248 | { |
77afc92b HE |
249 | static const char *names[] = { |
250 | [BOND_MODE_ROUNDROBIN] = "load balancing (round-robin)", | |
251 | [BOND_MODE_ACTIVEBACKUP] = "fault-tolerance (active-backup)", | |
252 | [BOND_MODE_XOR] = "load balancing (xor)", | |
253 | [BOND_MODE_BROADCAST] = "fault-tolerance (broadcast)", | |
3d632c3f | 254 | [BOND_MODE_8023AD] = "IEEE 802.3ad Dynamic link aggregation", |
77afc92b HE |
255 | [BOND_MODE_TLB] = "transmit load balancing", |
256 | [BOND_MODE_ALB] = "adaptive load balancing", | |
257 | }; | |
258 | ||
259 | if (mode < 0 || mode > BOND_MODE_ALB) | |
1da177e4 | 260 | return "unknown"; |
77afc92b HE |
261 | |
262 | return names[mode]; | |
1da177e4 LT |
263 | } |
264 | ||
265 | /*---------------------------------- VLAN -----------------------------------*/ | |
266 | ||
267 | /** | |
268 | * bond_add_vlan - add a new vlan id on bond | |
269 | * @bond: bond that got the notification | |
270 | * @vlan_id: the vlan id to add | |
271 | * | |
272 | * Returns -ENOMEM if allocation failed. | |
273 | */ | |
274 | static int bond_add_vlan(struct bonding *bond, unsigned short vlan_id) | |
275 | { | |
276 | struct vlan_entry *vlan; | |
277 | ||
5a03cdb7 | 278 | pr_debug("bond: %s, vlan id %d\n", |
a4aee5c8 | 279 | (bond ? bond->dev->name : "None"), vlan_id); |
1da177e4 | 280 | |
305d552a | 281 | vlan = kzalloc(sizeof(struct vlan_entry), GFP_KERNEL); |
3d632c3f | 282 | if (!vlan) |
1da177e4 | 283 | return -ENOMEM; |
1da177e4 LT |
284 | |
285 | INIT_LIST_HEAD(&vlan->vlan_list); | |
286 | vlan->vlan_id = vlan_id; | |
287 | ||
288 | write_lock_bh(&bond->lock); | |
289 | ||
290 | list_add_tail(&vlan->vlan_list, &bond->vlan_list); | |
291 | ||
292 | write_unlock_bh(&bond->lock); | |
293 | ||
5a03cdb7 | 294 | pr_debug("added VLAN ID %d on bond %s\n", vlan_id, bond->dev->name); |
1da177e4 LT |
295 | |
296 | return 0; | |
297 | } | |
298 | ||
299 | /** | |
300 | * bond_del_vlan - delete a vlan id from bond | |
301 | * @bond: bond that got the notification | |
302 | * @vlan_id: the vlan id to delete | |
303 | * | |
304 | * returns -ENODEV if @vlan_id was not found in @bond. | |
305 | */ | |
306 | static int bond_del_vlan(struct bonding *bond, unsigned short vlan_id) | |
307 | { | |
0883beca | 308 | struct vlan_entry *vlan; |
1da177e4 LT |
309 | int res = -ENODEV; |
310 | ||
5a03cdb7 | 311 | pr_debug("bond: %s, vlan id %d\n", bond->dev->name, vlan_id); |
1da177e4 LT |
312 | |
313 | write_lock_bh(&bond->lock); | |
314 | ||
0883beca | 315 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
1da177e4 LT |
316 | if (vlan->vlan_id == vlan_id) { |
317 | list_del(&vlan->vlan_list); | |
318 | ||
58402054 | 319 | if (bond_is_lb(bond)) |
1da177e4 | 320 | bond_alb_clear_vlan(bond, vlan_id); |
1da177e4 | 321 | |
a4aee5c8 JP |
322 | pr_debug("removed VLAN ID %d from bond %s\n", |
323 | vlan_id, bond->dev->name); | |
1da177e4 LT |
324 | |
325 | kfree(vlan); | |
326 | ||
327 | if (list_empty(&bond->vlan_list) && | |
328 | (bond->slave_cnt == 0)) { | |
329 | /* Last VLAN removed and no slaves, so | |
330 | * restore block on adding VLANs. This will | |
331 | * be removed once new slaves that are not | |
332 | * VLAN challenged will be added. | |
333 | */ | |
334 | bond->dev->features |= NETIF_F_VLAN_CHALLENGED; | |
335 | } | |
336 | ||
337 | res = 0; | |
338 | goto out; | |
339 | } | |
340 | } | |
341 | ||
a4aee5c8 JP |
342 | pr_debug("couldn't find VLAN ID %d in bond %s\n", |
343 | vlan_id, bond->dev->name); | |
1da177e4 LT |
344 | |
345 | out: | |
346 | write_unlock_bh(&bond->lock); | |
347 | return res; | |
348 | } | |
349 | ||
350 | /** | |
351 | * bond_has_challenged_slaves | |
352 | * @bond: the bond we're working on | |
353 | * | |
354 | * Searches the slave list. Returns 1 if a vlan challenged slave | |
355 | * was found, 0 otherwise. | |
356 | * | |
357 | * Assumes bond->lock is held. | |
358 | */ | |
359 | static int bond_has_challenged_slaves(struct bonding *bond) | |
360 | { | |
361 | struct slave *slave; | |
362 | int i; | |
363 | ||
364 | bond_for_each_slave(bond, slave, i) { | |
365 | if (slave->dev->features & NETIF_F_VLAN_CHALLENGED) { | |
5a03cdb7 | 366 | pr_debug("found VLAN challenged slave - %s\n", |
a4aee5c8 | 367 | slave->dev->name); |
1da177e4 LT |
368 | return 1; |
369 | } | |
370 | } | |
371 | ||
5a03cdb7 | 372 | pr_debug("no VLAN challenged slaves found\n"); |
1da177e4 LT |
373 | return 0; |
374 | } | |
375 | ||
376 | /** | |
377 | * bond_next_vlan - safely skip to the next item in the vlans list. | |
378 | * @bond: the bond we're working on | |
379 | * @curr: item we're advancing from | |
380 | * | |
381 | * Returns %NULL if list is empty, bond->next_vlan if @curr is %NULL, | |
382 | * or @curr->next otherwise (even if it is @curr itself again). | |
3d632c3f | 383 | * |
1da177e4 LT |
384 | * Caller must hold bond->lock |
385 | */ | |
386 | struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr) | |
387 | { | |
388 | struct vlan_entry *next, *last; | |
389 | ||
3d632c3f | 390 | if (list_empty(&bond->vlan_list)) |
1da177e4 | 391 | return NULL; |
1da177e4 LT |
392 | |
393 | if (!curr) { | |
394 | next = list_entry(bond->vlan_list.next, | |
395 | struct vlan_entry, vlan_list); | |
396 | } else { | |
397 | last = list_entry(bond->vlan_list.prev, | |
398 | struct vlan_entry, vlan_list); | |
399 | if (last == curr) { | |
400 | next = list_entry(bond->vlan_list.next, | |
401 | struct vlan_entry, vlan_list); | |
402 | } else { | |
403 | next = list_entry(curr->vlan_list.next, | |
404 | struct vlan_entry, vlan_list); | |
405 | } | |
406 | } | |
407 | ||
408 | return next; | |
409 | } | |
410 | ||
411 | /** | |
412 | * bond_dev_queue_xmit - Prepare skb for xmit. | |
3d632c3f | 413 | * |
1da177e4 LT |
414 | * @bond: bond device that got this skb for tx. |
415 | * @skb: hw accel VLAN tagged skb to transmit | |
416 | * @slave_dev: slave that is supposed to xmit this skbuff | |
3d632c3f | 417 | * |
1da177e4 LT |
418 | * When the bond gets an skb to transmit that is |
419 | * already hardware accelerated VLAN tagged, and it | |
420 | * needs to relay this skb to a slave that is not | |
421 | * hw accel capable, the skb needs to be "unaccelerated", | |
422 | * i.e. strip the hwaccel tag and re-insert it as part | |
423 | * of the payload. | |
424 | */ | |
3d632c3f SH |
425 | int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, |
426 | struct net_device *slave_dev) | |
1da177e4 | 427 | { |
966bc6f4 | 428 | unsigned short uninitialized_var(vlan_id); |
1da177e4 | 429 | |
f35188fa | 430 | /* Test vlan_list not vlgrp to catch and handle 802.1p tags */ |
1da177e4 LT |
431 | if (!list_empty(&bond->vlan_list) && |
432 | !(slave_dev->features & NETIF_F_HW_VLAN_TX) && | |
433 | vlan_get_tag(skb, &vlan_id) == 0) { | |
434 | skb->dev = slave_dev; | |
435 | skb = vlan_put_tag(skb, vlan_id); | |
436 | if (!skb) { | |
437 | /* vlan_put_tag() frees the skb in case of error, | |
438 | * so return success here so the calling functions | |
439 | * won't attempt to free is again. | |
440 | */ | |
441 | return 0; | |
442 | } | |
443 | } else { | |
444 | skb->dev = slave_dev; | |
445 | } | |
446 | ||
447 | skb->priority = 1; | |
f6dc31a8 WC |
448 | #ifdef CONFIG_NET_POLL_CONTROLLER |
449 | if (unlikely(bond->dev->priv_flags & IFF_IN_NETPOLL)) { | |
450 | struct netpoll *np = bond->dev->npinfo->netpoll; | |
451 | slave_dev->npinfo = bond->dev->npinfo; | |
452 | np->real_dev = np->dev = skb->dev; | |
453 | slave_dev->priv_flags |= IFF_IN_NETPOLL; | |
454 | netpoll_send_skb(np, skb); | |
455 | slave_dev->priv_flags &= ~IFF_IN_NETPOLL; | |
456 | np->dev = bond->dev; | |
457 | } else | |
458 | #endif | |
459 | dev_queue_xmit(skb); | |
1da177e4 LT |
460 | |
461 | return 0; | |
462 | } | |
463 | ||
464 | /* | |
465 | * In the following 3 functions, bond_vlan_rx_register(), bond_vlan_rx_add_vid | |
466 | * and bond_vlan_rx_kill_vid, We don't protect the slave list iteration with a | |
467 | * lock because: | |
468 | * a. This operation is performed in IOCTL context, | |
469 | * b. The operation is protected by the RTNL semaphore in the 8021q code, | |
470 | * c. Holding a lock with BH disabled while directly calling a base driver | |
471 | * entry point is generally a BAD idea. | |
3d632c3f | 472 | * |
1da177e4 LT |
473 | * The design of synchronization/protection for this operation in the 8021q |
474 | * module is good for one or more VLAN devices over a single physical device | |
475 | * and cannot be extended for a teaming solution like bonding, so there is a | |
476 | * potential race condition here where a net device from the vlan group might | |
477 | * be referenced (either by a base driver or the 8021q code) while it is being | |
478 | * removed from the system. However, it turns out we're not making matters | |
479 | * worse, and if it works for regular VLAN usage it will work here too. | |
480 | */ | |
481 | ||
482 | /** | |
483 | * bond_vlan_rx_register - Propagates registration to slaves | |
484 | * @bond_dev: bonding net device that got called | |
485 | * @grp: vlan group being registered | |
486 | */ | |
3d632c3f SH |
487 | static void bond_vlan_rx_register(struct net_device *bond_dev, |
488 | struct vlan_group *grp) | |
1da177e4 | 489 | { |
454d7c9b | 490 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
491 | struct slave *slave; |
492 | int i; | |
493 | ||
f35188fa | 494 | write_lock(&bond->lock); |
1da177e4 | 495 | bond->vlgrp = grp; |
f35188fa | 496 | write_unlock(&bond->lock); |
1da177e4 LT |
497 | |
498 | bond_for_each_slave(bond, slave, i) { | |
499 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 500 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
501 | |
502 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
503 | slave_ops->ndo_vlan_rx_register) { |
504 | slave_ops->ndo_vlan_rx_register(slave_dev, grp); | |
1da177e4 LT |
505 | } |
506 | } | |
507 | } | |
508 | ||
509 | /** | |
510 | * bond_vlan_rx_add_vid - Propagates adding an id to slaves | |
511 | * @bond_dev: bonding net device that got called | |
512 | * @vid: vlan id being added | |
513 | */ | |
514 | static void bond_vlan_rx_add_vid(struct net_device *bond_dev, uint16_t vid) | |
515 | { | |
454d7c9b | 516 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
517 | struct slave *slave; |
518 | int i, res; | |
519 | ||
520 | bond_for_each_slave(bond, slave, i) { | |
521 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 522 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
523 | |
524 | if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && | |
eb7cc59a SH |
525 | slave_ops->ndo_vlan_rx_add_vid) { |
526 | slave_ops->ndo_vlan_rx_add_vid(slave_dev, vid); | |
1da177e4 LT |
527 | } |
528 | } | |
529 | ||
530 | res = bond_add_vlan(bond, vid); | |
531 | if (res) { | |
a4aee5c8 | 532 | pr_err("%s: Error: Failed to add vlan id %d\n", |
1da177e4 LT |
533 | bond_dev->name, vid); |
534 | } | |
535 | } | |
536 | ||
537 | /** | |
538 | * bond_vlan_rx_kill_vid - Propagates deleting an id to slaves | |
539 | * @bond_dev: bonding net device that got called | |
540 | * @vid: vlan id being removed | |
541 | */ | |
542 | static void bond_vlan_rx_kill_vid(struct net_device *bond_dev, uint16_t vid) | |
543 | { | |
454d7c9b | 544 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
545 | struct slave *slave; |
546 | struct net_device *vlan_dev; | |
547 | int i, res; | |
548 | ||
549 | bond_for_each_slave(bond, slave, i) { | |
550 | struct net_device *slave_dev = slave->dev; | |
eb7cc59a | 551 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
552 | |
553 | if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && | |
eb7cc59a | 554 | slave_ops->ndo_vlan_rx_kill_vid) { |
1da177e4 LT |
555 | /* Save and then restore vlan_dev in the grp array, |
556 | * since the slave's driver might clear it. | |
557 | */ | |
5c15bdec | 558 | vlan_dev = vlan_group_get_device(bond->vlgrp, vid); |
eb7cc59a | 559 | slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vid); |
5c15bdec | 560 | vlan_group_set_device(bond->vlgrp, vid, vlan_dev); |
1da177e4 LT |
561 | } |
562 | } | |
563 | ||
564 | res = bond_del_vlan(bond, vid); | |
565 | if (res) { | |
a4aee5c8 | 566 | pr_err("%s: Error: Failed to remove vlan id %d\n", |
1da177e4 LT |
567 | bond_dev->name, vid); |
568 | } | |
569 | } | |
570 | ||
571 | static void bond_add_vlans_on_slave(struct bonding *bond, struct net_device *slave_dev) | |
572 | { | |
573 | struct vlan_entry *vlan; | |
eb7cc59a | 574 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 | 575 | |
f35188fa | 576 | if (!bond->vlgrp) |
03dc2f4c | 577 | return; |
1da177e4 LT |
578 | |
579 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
580 | slave_ops->ndo_vlan_rx_register) |
581 | slave_ops->ndo_vlan_rx_register(slave_dev, bond->vlgrp); | |
1da177e4 LT |
582 | |
583 | if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || | |
eb7cc59a | 584 | !(slave_ops->ndo_vlan_rx_add_vid)) |
03dc2f4c | 585 | return; |
1da177e4 | 586 | |
eb7cc59a SH |
587 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) |
588 | slave_ops->ndo_vlan_rx_add_vid(slave_dev, vlan->vlan_id); | |
1da177e4 LT |
589 | } |
590 | ||
3d632c3f SH |
591 | static void bond_del_vlans_from_slave(struct bonding *bond, |
592 | struct net_device *slave_dev) | |
1da177e4 | 593 | { |
eb7cc59a | 594 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 LT |
595 | struct vlan_entry *vlan; |
596 | struct net_device *vlan_dev; | |
597 | ||
f35188fa | 598 | if (!bond->vlgrp) |
03dc2f4c | 599 | return; |
1da177e4 LT |
600 | |
601 | if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || | |
eb7cc59a | 602 | !(slave_ops->ndo_vlan_rx_kill_vid)) |
1da177e4 | 603 | goto unreg; |
1da177e4 LT |
604 | |
605 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { | |
f35188fa JV |
606 | if (!vlan->vlan_id) |
607 | continue; | |
1da177e4 LT |
608 | /* Save and then restore vlan_dev in the grp array, |
609 | * since the slave's driver might clear it. | |
610 | */ | |
5c15bdec | 611 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
eb7cc59a | 612 | slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vlan->vlan_id); |
5c15bdec | 613 | vlan_group_set_device(bond->vlgrp, vlan->vlan_id, vlan_dev); |
1da177e4 LT |
614 | } |
615 | ||
616 | unreg: | |
617 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && | |
eb7cc59a SH |
618 | slave_ops->ndo_vlan_rx_register) |
619 | slave_ops->ndo_vlan_rx_register(slave_dev, NULL); | |
1da177e4 LT |
620 | } |
621 | ||
622 | /*------------------------------- Link status -------------------------------*/ | |
623 | ||
ff59c456 JV |
624 | /* |
625 | * Set the carrier state for the master according to the state of its | |
626 | * slaves. If any slaves are up, the master is up. In 802.3ad mode, | |
627 | * do special 802.3ad magic. | |
628 | * | |
629 | * Returns zero if carrier state does not change, nonzero if it does. | |
630 | */ | |
631 | static int bond_set_carrier(struct bonding *bond) | |
632 | { | |
633 | struct slave *slave; | |
634 | int i; | |
635 | ||
636 | if (bond->slave_cnt == 0) | |
637 | goto down; | |
638 | ||
639 | if (bond->params.mode == BOND_MODE_8023AD) | |
640 | return bond_3ad_set_carrier(bond); | |
641 | ||
642 | bond_for_each_slave(bond, slave, i) { | |
643 | if (slave->link == BOND_LINK_UP) { | |
644 | if (!netif_carrier_ok(bond->dev)) { | |
645 | netif_carrier_on(bond->dev); | |
646 | return 1; | |
647 | } | |
648 | return 0; | |
649 | } | |
650 | } | |
651 | ||
652 | down: | |
653 | if (netif_carrier_ok(bond->dev)) { | |
654 | netif_carrier_off(bond->dev); | |
655 | return 1; | |
656 | } | |
657 | return 0; | |
658 | } | |
659 | ||
1da177e4 LT |
660 | /* |
661 | * Get link speed and duplex from the slave's base driver | |
662 | * using ethtool. If for some reason the call fails or the | |
663 | * values are invalid, fake speed and duplex to 100/Full | |
664 | * and return error. | |
665 | */ | |
666 | static int bond_update_speed_duplex(struct slave *slave) | |
667 | { | |
668 | struct net_device *slave_dev = slave->dev; | |
1da177e4 | 669 | struct ethtool_cmd etool; |
61a44b9c | 670 | int res; |
1da177e4 LT |
671 | |
672 | /* Fake speed and duplex */ | |
673 | slave->speed = SPEED_100; | |
674 | slave->duplex = DUPLEX_FULL; | |
675 | ||
61a44b9c MW |
676 | if (!slave_dev->ethtool_ops || !slave_dev->ethtool_ops->get_settings) |
677 | return -1; | |
1da177e4 | 678 | |
61a44b9c MW |
679 | res = slave_dev->ethtool_ops->get_settings(slave_dev, &etool); |
680 | if (res < 0) | |
1da177e4 | 681 | return -1; |
1da177e4 | 682 | |
1da177e4 LT |
683 | switch (etool.speed) { |
684 | case SPEED_10: | |
685 | case SPEED_100: | |
686 | case SPEED_1000: | |
94dbffd5 | 687 | case SPEED_10000: |
1da177e4 LT |
688 | break; |
689 | default: | |
690 | return -1; | |
691 | } | |
692 | ||
693 | switch (etool.duplex) { | |
694 | case DUPLEX_FULL: | |
695 | case DUPLEX_HALF: | |
696 | break; | |
697 | default: | |
698 | return -1; | |
699 | } | |
700 | ||
701 | slave->speed = etool.speed; | |
702 | slave->duplex = etool.duplex; | |
703 | ||
704 | return 0; | |
705 | } | |
706 | ||
707 | /* | |
708 | * if <dev> supports MII link status reporting, check its link status. | |
709 | * | |
710 | * We either do MII/ETHTOOL ioctls, or check netif_carrier_ok(), | |
3d632c3f | 711 | * depending upon the setting of the use_carrier parameter. |
1da177e4 LT |
712 | * |
713 | * Return either BMSR_LSTATUS, meaning that the link is up (or we | |
714 | * can't tell and just pretend it is), or 0, meaning that the link is | |
715 | * down. | |
716 | * | |
717 | * If reporting is non-zero, instead of faking link up, return -1 if | |
718 | * both ETHTOOL and MII ioctls fail (meaning the device does not | |
719 | * support them). If use_carrier is set, return whatever it says. | |
720 | * It'd be nice if there was a good way to tell if a driver supports | |
721 | * netif_carrier, but there really isn't. | |
722 | */ | |
3d632c3f SH |
723 | static int bond_check_dev_link(struct bonding *bond, |
724 | struct net_device *slave_dev, int reporting) | |
1da177e4 | 725 | { |
eb7cc59a | 726 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
d9d52832 | 727 | int (*ioctl)(struct net_device *, struct ifreq *, int); |
1da177e4 LT |
728 | struct ifreq ifr; |
729 | struct mii_ioctl_data *mii; | |
1da177e4 | 730 | |
6c988853 PG |
731 | if (!reporting && !netif_running(slave_dev)) |
732 | return 0; | |
733 | ||
eb7cc59a | 734 | if (bond->params.use_carrier) |
1da177e4 | 735 | return netif_carrier_ok(slave_dev) ? BMSR_LSTATUS : 0; |
1da177e4 | 736 | |
29112f4e JP |
737 | /* Try to get link status using Ethtool first. */ |
738 | if (slave_dev->ethtool_ops) { | |
739 | if (slave_dev->ethtool_ops->get_link) { | |
740 | u32 link; | |
741 | ||
742 | link = slave_dev->ethtool_ops->get_link(slave_dev); | |
743 | ||
744 | return link ? BMSR_LSTATUS : 0; | |
745 | } | |
746 | } | |
747 | ||
3d632c3f | 748 | /* Ethtool can't be used, fallback to MII ioctls. */ |
eb7cc59a | 749 | ioctl = slave_ops->ndo_do_ioctl; |
1da177e4 LT |
750 | if (ioctl) { |
751 | /* TODO: set pointer to correct ioctl on a per team member */ | |
752 | /* bases to make this more efficient. that is, once */ | |
753 | /* we determine the correct ioctl, we will always */ | |
754 | /* call it and not the others for that team */ | |
755 | /* member. */ | |
756 | ||
757 | /* | |
758 | * We cannot assume that SIOCGMIIPHY will also read a | |
759 | * register; not all network drivers (e.g., e100) | |
760 | * support that. | |
761 | */ | |
762 | ||
763 | /* Yes, the mii is overlaid on the ifreq.ifr_ifru */ | |
764 | strncpy(ifr.ifr_name, slave_dev->name, IFNAMSIZ); | |
765 | mii = if_mii(&ifr); | |
766 | if (IOCTL(slave_dev, &ifr, SIOCGMIIPHY) == 0) { | |
767 | mii->reg_num = MII_BMSR; | |
3d632c3f SH |
768 | if (IOCTL(slave_dev, &ifr, SIOCGMIIREG) == 0) |
769 | return mii->val_out & BMSR_LSTATUS; | |
1da177e4 LT |
770 | } |
771 | } | |
772 | ||
1da177e4 LT |
773 | /* |
774 | * If reporting, report that either there's no dev->do_ioctl, | |
61a44b9c | 775 | * or both SIOCGMIIREG and get_link failed (meaning that we |
1da177e4 LT |
776 | * cannot report link status). If not reporting, pretend |
777 | * we're ok. | |
778 | */ | |
3d632c3f | 779 | return reporting ? -1 : BMSR_LSTATUS; |
1da177e4 LT |
780 | } |
781 | ||
782 | /*----------------------------- Multicast list ------------------------------*/ | |
783 | ||
1da177e4 LT |
784 | /* |
785 | * Push the promiscuity flag down to appropriate slaves | |
786 | */ | |
7e1a1ac1 | 787 | static int bond_set_promiscuity(struct bonding *bond, int inc) |
1da177e4 | 788 | { |
7e1a1ac1 | 789 | int err = 0; |
1da177e4 LT |
790 | if (USES_PRIMARY(bond->params.mode)) { |
791 | /* write lock already acquired */ | |
792 | if (bond->curr_active_slave) { | |
7e1a1ac1 WC |
793 | err = dev_set_promiscuity(bond->curr_active_slave->dev, |
794 | inc); | |
1da177e4 LT |
795 | } |
796 | } else { | |
797 | struct slave *slave; | |
798 | int i; | |
799 | bond_for_each_slave(bond, slave, i) { | |
7e1a1ac1 WC |
800 | err = dev_set_promiscuity(slave->dev, inc); |
801 | if (err) | |
802 | return err; | |
1da177e4 LT |
803 | } |
804 | } | |
7e1a1ac1 | 805 | return err; |
1da177e4 LT |
806 | } |
807 | ||
808 | /* | |
809 | * Push the allmulti flag down to all slaves | |
810 | */ | |
7e1a1ac1 | 811 | static int bond_set_allmulti(struct bonding *bond, int inc) |
1da177e4 | 812 | { |
7e1a1ac1 | 813 | int err = 0; |
1da177e4 LT |
814 | if (USES_PRIMARY(bond->params.mode)) { |
815 | /* write lock already acquired */ | |
816 | if (bond->curr_active_slave) { | |
7e1a1ac1 WC |
817 | err = dev_set_allmulti(bond->curr_active_slave->dev, |
818 | inc); | |
1da177e4 LT |
819 | } |
820 | } else { | |
821 | struct slave *slave; | |
822 | int i; | |
823 | bond_for_each_slave(bond, slave, i) { | |
7e1a1ac1 WC |
824 | err = dev_set_allmulti(slave->dev, inc); |
825 | if (err) | |
826 | return err; | |
1da177e4 LT |
827 | } |
828 | } | |
7e1a1ac1 | 829 | return err; |
1da177e4 LT |
830 | } |
831 | ||
832 | /* | |
833 | * Add a Multicast address to slaves | |
834 | * according to mode | |
835 | */ | |
22bedad3 | 836 | static void bond_mc_add(struct bonding *bond, void *addr) |
1da177e4 LT |
837 | { |
838 | if (USES_PRIMARY(bond->params.mode)) { | |
839 | /* write lock already acquired */ | |
3d632c3f | 840 | if (bond->curr_active_slave) |
22bedad3 | 841 | dev_mc_add(bond->curr_active_slave->dev, addr); |
1da177e4 LT |
842 | } else { |
843 | struct slave *slave; | |
844 | int i; | |
3d632c3f SH |
845 | |
846 | bond_for_each_slave(bond, slave, i) | |
22bedad3 | 847 | dev_mc_add(slave->dev, addr); |
1da177e4 LT |
848 | } |
849 | } | |
850 | ||
851 | /* | |
852 | * Remove a multicast address from slave | |
853 | * according to mode | |
854 | */ | |
22bedad3 | 855 | static void bond_mc_del(struct bonding *bond, void *addr) |
1da177e4 LT |
856 | { |
857 | if (USES_PRIMARY(bond->params.mode)) { | |
858 | /* write lock already acquired */ | |
3d632c3f | 859 | if (bond->curr_active_slave) |
22bedad3 | 860 | dev_mc_del(bond->curr_active_slave->dev, addr); |
1da177e4 LT |
861 | } else { |
862 | struct slave *slave; | |
863 | int i; | |
864 | bond_for_each_slave(bond, slave, i) { | |
22bedad3 | 865 | dev_mc_del(slave->dev, addr); |
1da177e4 LT |
866 | } |
867 | } | |
868 | } | |
869 | ||
a816c7c7 | 870 | |
5a37e8ca | 871 | static void __bond_resend_igmp_join_requests(struct net_device *dev) |
a816c7c7 JV |
872 | { |
873 | struct in_device *in_dev; | |
874 | struct ip_mc_list *im; | |
875 | ||
876 | rcu_read_lock(); | |
5a37e8ca | 877 | in_dev = __in_dev_get_rcu(dev); |
a816c7c7 | 878 | if (in_dev) { |
3d632c3f | 879 | for (im = in_dev->mc_list; im; im = im->next) |
a816c7c7 | 880 | ip_mc_rejoin_group(im); |
a816c7c7 JV |
881 | } |
882 | ||
883 | rcu_read_unlock(); | |
884 | } | |
885 | ||
5a37e8ca FL |
886 | /* |
887 | * Retrieve the list of registered multicast addresses for the bonding | |
888 | * device and retransmit an IGMP JOIN request to the current active | |
889 | * slave. | |
890 | */ | |
891 | static void bond_resend_igmp_join_requests(struct bonding *bond) | |
892 | { | |
893 | struct net_device *vlan_dev; | |
894 | struct vlan_entry *vlan; | |
895 | ||
896 | read_lock(&bond->lock); | |
897 | ||
898 | /* rejoin all groups on bond device */ | |
899 | __bond_resend_igmp_join_requests(bond->dev); | |
900 | ||
901 | /* rejoin all groups on vlan devices */ | |
902 | if (bond->vlgrp) { | |
903 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { | |
904 | vlan_dev = vlan_group_get_device(bond->vlgrp, | |
905 | vlan->vlan_id); | |
906 | if (vlan_dev) | |
907 | __bond_resend_igmp_join_requests(vlan_dev); | |
908 | } | |
909 | } | |
910 | ||
c2952c31 FL |
911 | if (--bond->igmp_retrans > 0) |
912 | queue_delayed_work(bond->wq, &bond->mcast_work, HZ/5); | |
913 | ||
5a37e8ca FL |
914 | read_unlock(&bond->lock); |
915 | } | |
916 | ||
917 | void bond_resend_igmp_join_requests_delayed(struct work_struct *work) | |
918 | { | |
919 | struct bonding *bond = container_of(work, struct bonding, | |
920 | mcast_work.work); | |
921 | bond_resend_igmp_join_requests(bond); | |
922 | } | |
923 | ||
1da177e4 LT |
924 | /* |
925 | * flush all members of flush->mc_list from device dev->mc_list | |
926 | */ | |
3d632c3f SH |
927 | static void bond_mc_list_flush(struct net_device *bond_dev, |
928 | struct net_device *slave_dev) | |
1da177e4 | 929 | { |
454d7c9b | 930 | struct bonding *bond = netdev_priv(bond_dev); |
22bedad3 | 931 | struct netdev_hw_addr *ha; |
1da177e4 | 932 | |
22bedad3 JP |
933 | netdev_for_each_mc_addr(ha, bond_dev) |
934 | dev_mc_del(slave_dev, ha->addr); | |
1da177e4 LT |
935 | |
936 | if (bond->params.mode == BOND_MODE_8023AD) { | |
937 | /* del lacpdu mc addr from mc list */ | |
938 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; | |
939 | ||
22bedad3 | 940 | dev_mc_del(slave_dev, lacpdu_multicast); |
1da177e4 LT |
941 | } |
942 | } | |
943 | ||
944 | /*--------------------------- Active slave change ---------------------------*/ | |
945 | ||
946 | /* | |
947 | * Update the mc list and multicast-related flags for the new and | |
948 | * old active slaves (if any) according to the multicast mode, and | |
949 | * promiscuous flags unconditionally. | |
950 | */ | |
3d632c3f SH |
951 | static void bond_mc_swap(struct bonding *bond, struct slave *new_active, |
952 | struct slave *old_active) | |
1da177e4 | 953 | { |
22bedad3 | 954 | struct netdev_hw_addr *ha; |
1da177e4 | 955 | |
3d632c3f | 956 | if (!USES_PRIMARY(bond->params.mode)) |
1da177e4 LT |
957 | /* nothing to do - mc list is already up-to-date on |
958 | * all slaves | |
959 | */ | |
960 | return; | |
1da177e4 LT |
961 | |
962 | if (old_active) { | |
3d632c3f | 963 | if (bond->dev->flags & IFF_PROMISC) |
1da177e4 | 964 | dev_set_promiscuity(old_active->dev, -1); |
1da177e4 | 965 | |
3d632c3f | 966 | if (bond->dev->flags & IFF_ALLMULTI) |
1da177e4 | 967 | dev_set_allmulti(old_active->dev, -1); |
1da177e4 | 968 | |
22bedad3 JP |
969 | netdev_for_each_mc_addr(ha, bond->dev) |
970 | dev_mc_del(old_active->dev, ha->addr); | |
1da177e4 LT |
971 | } |
972 | ||
973 | if (new_active) { | |
7e1a1ac1 | 974 | /* FIXME: Signal errors upstream. */ |
3d632c3f | 975 | if (bond->dev->flags & IFF_PROMISC) |
1da177e4 | 976 | dev_set_promiscuity(new_active->dev, 1); |
1da177e4 | 977 | |
3d632c3f | 978 | if (bond->dev->flags & IFF_ALLMULTI) |
1da177e4 | 979 | dev_set_allmulti(new_active->dev, 1); |
1da177e4 | 980 | |
22bedad3 JP |
981 | netdev_for_each_mc_addr(ha, bond->dev) |
982 | dev_mc_add(new_active->dev, ha->addr); | |
1da177e4 LT |
983 | } |
984 | } | |
985 | ||
3915c1e8 JV |
986 | /* |
987 | * bond_do_fail_over_mac | |
988 | * | |
989 | * Perform special MAC address swapping for fail_over_mac settings | |
990 | * | |
991 | * Called with RTNL, bond->lock for read, curr_slave_lock for write_bh. | |
992 | */ | |
993 | static void bond_do_fail_over_mac(struct bonding *bond, | |
994 | struct slave *new_active, | |
995 | struct slave *old_active) | |
1f78d9f9 HE |
996 | __releases(&bond->curr_slave_lock) |
997 | __releases(&bond->lock) | |
998 | __acquires(&bond->lock) | |
999 | __acquires(&bond->curr_slave_lock) | |
3915c1e8 JV |
1000 | { |
1001 | u8 tmp_mac[ETH_ALEN]; | |
1002 | struct sockaddr saddr; | |
1003 | int rv; | |
1004 | ||
1005 | switch (bond->params.fail_over_mac) { | |
1006 | case BOND_FOM_ACTIVE: | |
1007 | if (new_active) | |
1008 | memcpy(bond->dev->dev_addr, new_active->dev->dev_addr, | |
1009 | new_active->dev->addr_len); | |
1010 | break; | |
1011 | case BOND_FOM_FOLLOW: | |
1012 | /* | |
1013 | * if new_active && old_active, swap them | |
1014 | * if just old_active, do nothing (going to no active slave) | |
1015 | * if just new_active, set new_active to bond's MAC | |
1016 | */ | |
1017 | if (!new_active) | |
1018 | return; | |
1019 | ||
1020 | write_unlock_bh(&bond->curr_slave_lock); | |
1021 | read_unlock(&bond->lock); | |
1022 | ||
1023 | if (old_active) { | |
1024 | memcpy(tmp_mac, new_active->dev->dev_addr, ETH_ALEN); | |
1025 | memcpy(saddr.sa_data, old_active->dev->dev_addr, | |
1026 | ETH_ALEN); | |
1027 | saddr.sa_family = new_active->dev->type; | |
1028 | } else { | |
1029 | memcpy(saddr.sa_data, bond->dev->dev_addr, ETH_ALEN); | |
1030 | saddr.sa_family = bond->dev->type; | |
1031 | } | |
1032 | ||
1033 | rv = dev_set_mac_address(new_active->dev, &saddr); | |
1034 | if (rv) { | |
a4aee5c8 | 1035 | pr_err("%s: Error %d setting MAC of slave %s\n", |
3915c1e8 JV |
1036 | bond->dev->name, -rv, new_active->dev->name); |
1037 | goto out; | |
1038 | } | |
1039 | ||
1040 | if (!old_active) | |
1041 | goto out; | |
1042 | ||
1043 | memcpy(saddr.sa_data, tmp_mac, ETH_ALEN); | |
1044 | saddr.sa_family = old_active->dev->type; | |
1045 | ||
1046 | rv = dev_set_mac_address(old_active->dev, &saddr); | |
1047 | if (rv) | |
a4aee5c8 | 1048 | pr_err("%s: Error %d setting MAC of slave %s\n", |
3915c1e8 JV |
1049 | bond->dev->name, -rv, new_active->dev->name); |
1050 | out: | |
1051 | read_lock(&bond->lock); | |
1052 | write_lock_bh(&bond->curr_slave_lock); | |
1053 | break; | |
1054 | default: | |
a4aee5c8 | 1055 | pr_err("%s: bond_do_fail_over_mac impossible: bad policy %d\n", |
3915c1e8 JV |
1056 | bond->dev->name, bond->params.fail_over_mac); |
1057 | break; | |
1058 | } | |
1059 | ||
1060 | } | |
1061 | ||
a549952a JP |
1062 | static bool bond_should_change_active(struct bonding *bond) |
1063 | { | |
1064 | struct slave *prim = bond->primary_slave; | |
1065 | struct slave *curr = bond->curr_active_slave; | |
1066 | ||
1067 | if (!prim || !curr || curr->link != BOND_LINK_UP) | |
1068 | return true; | |
1069 | if (bond->force_primary) { | |
1070 | bond->force_primary = false; | |
1071 | return true; | |
1072 | } | |
1073 | if (bond->params.primary_reselect == BOND_PRI_RESELECT_BETTER && | |
1074 | (prim->speed < curr->speed || | |
1075 | (prim->speed == curr->speed && prim->duplex <= curr->duplex))) | |
1076 | return false; | |
1077 | if (bond->params.primary_reselect == BOND_PRI_RESELECT_FAILURE) | |
1078 | return false; | |
1079 | return true; | |
1080 | } | |
3915c1e8 | 1081 | |
1da177e4 LT |
1082 | /** |
1083 | * find_best_interface - select the best available slave to be the active one | |
1084 | * @bond: our bonding struct | |
1085 | * | |
1086 | * Warning: Caller must hold curr_slave_lock for writing. | |
1087 | */ | |
1088 | static struct slave *bond_find_best_slave(struct bonding *bond) | |
1089 | { | |
1090 | struct slave *new_active, *old_active; | |
1091 | struct slave *bestslave = NULL; | |
1092 | int mintime = bond->params.updelay; | |
1093 | int i; | |
1094 | ||
49b4ad92 | 1095 | new_active = bond->curr_active_slave; |
1da177e4 LT |
1096 | |
1097 | if (!new_active) { /* there were no active slaves left */ | |
3d632c3f | 1098 | if (bond->slave_cnt > 0) /* found one slave */ |
1da177e4 | 1099 | new_active = bond->first_slave; |
3d632c3f | 1100 | else |
1da177e4 | 1101 | return NULL; /* still no slave, return NULL */ |
1da177e4 LT |
1102 | } |
1103 | ||
1da177e4 | 1104 | if ((bond->primary_slave) && |
a549952a JP |
1105 | bond->primary_slave->link == BOND_LINK_UP && |
1106 | bond_should_change_active(bond)) { | |
1da177e4 LT |
1107 | new_active = bond->primary_slave; |
1108 | } | |
1109 | ||
1110 | /* remember where to stop iterating over the slaves */ | |
1111 | old_active = new_active; | |
1112 | ||
1113 | bond_for_each_slave_from(bond, new_active, i, old_active) { | |
b9f60253 JP |
1114 | if (new_active->link == BOND_LINK_UP) { |
1115 | return new_active; | |
1116 | } else if (new_active->link == BOND_LINK_BACK && | |
1117 | IS_UP(new_active->dev)) { | |
1118 | /* link up, but waiting for stabilization */ | |
1119 | if (new_active->delay < mintime) { | |
1120 | mintime = new_active->delay; | |
1121 | bestslave = new_active; | |
1da177e4 LT |
1122 | } |
1123 | } | |
1124 | } | |
1125 | ||
1126 | return bestslave; | |
1127 | } | |
1128 | ||
1129 | /** | |
1130 | * change_active_interface - change the active slave into the specified one | |
1131 | * @bond: our bonding struct | |
1132 | * @new: the new slave to make the active one | |
1133 | * | |
1134 | * Set the new slave to the bond's settings and unset them on the old | |
1135 | * curr_active_slave. | |
1136 | * Setting include flags, mc-list, promiscuity, allmulti, etc. | |
1137 | * | |
1138 | * If @new's link state is %BOND_LINK_BACK we'll set it to %BOND_LINK_UP, | |
1139 | * because it is apparently the best available slave we have, even though its | |
1140 | * updelay hasn't timed out yet. | |
1141 | * | |
3915c1e8 JV |
1142 | * If new_active is not NULL, caller must hold bond->lock for read and |
1143 | * curr_slave_lock for write_bh. | |
1da177e4 | 1144 | */ |
a77b5325 | 1145 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active) |
1da177e4 LT |
1146 | { |
1147 | struct slave *old_active = bond->curr_active_slave; | |
1148 | ||
3d632c3f | 1149 | if (old_active == new_active) |
1da177e4 | 1150 | return; |
1da177e4 LT |
1151 | |
1152 | if (new_active) { | |
b2220cad JV |
1153 | new_active->jiffies = jiffies; |
1154 | ||
1da177e4 LT |
1155 | if (new_active->link == BOND_LINK_BACK) { |
1156 | if (USES_PRIMARY(bond->params.mode)) { | |
a4aee5c8 JP |
1157 | pr_info("%s: making interface %s the new active one %d ms earlier.\n", |
1158 | bond->dev->name, new_active->dev->name, | |
1159 | (bond->params.updelay - new_active->delay) * bond->params.miimon); | |
1da177e4 LT |
1160 | } |
1161 | ||
1162 | new_active->delay = 0; | |
1163 | new_active->link = BOND_LINK_UP; | |
1da177e4 | 1164 | |
3d632c3f | 1165 | if (bond->params.mode == BOND_MODE_8023AD) |
1da177e4 | 1166 | bond_3ad_handle_link_change(new_active, BOND_LINK_UP); |
1da177e4 | 1167 | |
58402054 | 1168 | if (bond_is_lb(bond)) |
1da177e4 | 1169 | bond_alb_handle_link_change(bond, new_active, BOND_LINK_UP); |
1da177e4 LT |
1170 | } else { |
1171 | if (USES_PRIMARY(bond->params.mode)) { | |
a4aee5c8 JP |
1172 | pr_info("%s: making interface %s the new active one.\n", |
1173 | bond->dev->name, new_active->dev->name); | |
1da177e4 LT |
1174 | } |
1175 | } | |
1176 | } | |
1177 | ||
3d632c3f | 1178 | if (USES_PRIMARY(bond->params.mode)) |
1da177e4 | 1179 | bond_mc_swap(bond, new_active, old_active); |
1da177e4 | 1180 | |
58402054 | 1181 | if (bond_is_lb(bond)) { |
1da177e4 | 1182 | bond_alb_handle_active_change(bond, new_active); |
8f903c70 JV |
1183 | if (old_active) |
1184 | bond_set_slave_inactive_flags(old_active); | |
1185 | if (new_active) | |
1186 | bond_set_slave_active_flags(new_active); | |
1da177e4 LT |
1187 | } else { |
1188 | bond->curr_active_slave = new_active; | |
1189 | } | |
c3ade5ca JV |
1190 | |
1191 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) { | |
3d632c3f | 1192 | if (old_active) |
c3ade5ca | 1193 | bond_set_slave_inactive_flags(old_active); |
c3ade5ca JV |
1194 | |
1195 | if (new_active) { | |
1196 | bond_set_slave_active_flags(new_active); | |
2ab82852 | 1197 | |
709f8a45 OG |
1198 | if (bond->params.fail_over_mac) |
1199 | bond_do_fail_over_mac(bond, new_active, | |
1200 | old_active); | |
3915c1e8 | 1201 | |
709f8a45 | 1202 | bond->send_grat_arp = bond->params.num_grat_arp; |
b59f9f74 | 1203 | bond_send_gratuitous_arp(bond); |
01f3109d | 1204 | |
305d552a BH |
1205 | bond->send_unsol_na = bond->params.num_unsol_na; |
1206 | bond_send_unsolicited_na(bond); | |
1207 | ||
01f3109d OG |
1208 | write_unlock_bh(&bond->curr_slave_lock); |
1209 | read_unlock(&bond->lock); | |
1210 | ||
75c78500 | 1211 | netdev_bonding_change(bond->dev, NETDEV_BONDING_FAILOVER); |
01f3109d OG |
1212 | |
1213 | read_lock(&bond->lock); | |
1214 | write_lock_bh(&bond->curr_slave_lock); | |
7893b249 | 1215 | } |
c3ade5ca | 1216 | } |
a2fd940f | 1217 | |
5a37e8ca FL |
1218 | /* resend IGMP joins since active slave has changed or |
1219 | * all were sent on curr_active_slave */ | |
1220 | if ((USES_PRIMARY(bond->params.mode) && new_active) || | |
1221 | bond->params.mode == BOND_MODE_ROUNDROBIN) { | |
c2952c31 | 1222 | bond->igmp_retrans = bond->params.resend_igmp; |
5a37e8ca | 1223 | queue_delayed_work(bond->wq, &bond->mcast_work, 0); |
a2fd940f | 1224 | } |
1da177e4 LT |
1225 | } |
1226 | ||
1227 | /** | |
1228 | * bond_select_active_slave - select a new active slave, if needed | |
1229 | * @bond: our bonding struct | |
1230 | * | |
3d632c3f | 1231 | * This functions should be called when one of the following occurs: |
1da177e4 LT |
1232 | * - The old curr_active_slave has been released or lost its link. |
1233 | * - The primary_slave has got its link back. | |
1234 | * - A slave has got its link back and there's no old curr_active_slave. | |
1235 | * | |
3915c1e8 | 1236 | * Caller must hold bond->lock for read and curr_slave_lock for write_bh. |
1da177e4 | 1237 | */ |
a77b5325 | 1238 | void bond_select_active_slave(struct bonding *bond) |
1da177e4 LT |
1239 | { |
1240 | struct slave *best_slave; | |
ff59c456 | 1241 | int rv; |
1da177e4 LT |
1242 | |
1243 | best_slave = bond_find_best_slave(bond); | |
1244 | if (best_slave != bond->curr_active_slave) { | |
1245 | bond_change_active_slave(bond, best_slave); | |
ff59c456 JV |
1246 | rv = bond_set_carrier(bond); |
1247 | if (!rv) | |
1248 | return; | |
1249 | ||
1250 | if (netif_carrier_ok(bond->dev)) { | |
a4aee5c8 JP |
1251 | pr_info("%s: first active interface up!\n", |
1252 | bond->dev->name); | |
ff59c456 | 1253 | } else { |
a4aee5c8 JP |
1254 | pr_info("%s: now running without any active interface !\n", |
1255 | bond->dev->name); | |
ff59c456 | 1256 | } |
1da177e4 LT |
1257 | } |
1258 | } | |
1259 | ||
1260 | /*--------------------------- slave list handling ---------------------------*/ | |
1261 | ||
1262 | /* | |
1263 | * This function attaches the slave to the end of list. | |
1264 | * | |
1265 | * bond->lock held for writing by caller. | |
1266 | */ | |
1267 | static void bond_attach_slave(struct bonding *bond, struct slave *new_slave) | |
1268 | { | |
1269 | if (bond->first_slave == NULL) { /* attaching the first slave */ | |
1270 | new_slave->next = new_slave; | |
1271 | new_slave->prev = new_slave; | |
1272 | bond->first_slave = new_slave; | |
1273 | } else { | |
1274 | new_slave->next = bond->first_slave; | |
1275 | new_slave->prev = bond->first_slave->prev; | |
1276 | new_slave->next->prev = new_slave; | |
1277 | new_slave->prev->next = new_slave; | |
1278 | } | |
1279 | ||
1280 | bond->slave_cnt++; | |
1281 | } | |
1282 | ||
1283 | /* | |
1284 | * This function detaches the slave from the list. | |
1285 | * WARNING: no check is made to verify if the slave effectively | |
1286 | * belongs to <bond>. | |
1287 | * Nothing is freed on return, structures are just unchained. | |
1288 | * If any slave pointer in bond was pointing to <slave>, | |
1289 | * it should be changed by the calling function. | |
1290 | * | |
1291 | * bond->lock held for writing by caller. | |
1292 | */ | |
1293 | static void bond_detach_slave(struct bonding *bond, struct slave *slave) | |
1294 | { | |
3d632c3f | 1295 | if (slave->next) |
1da177e4 | 1296 | slave->next->prev = slave->prev; |
1da177e4 | 1297 | |
3d632c3f | 1298 | if (slave->prev) |
1da177e4 | 1299 | slave->prev->next = slave->next; |
1da177e4 LT |
1300 | |
1301 | if (bond->first_slave == slave) { /* slave is the first slave */ | |
1302 | if (bond->slave_cnt > 1) { /* there are more slave */ | |
1303 | bond->first_slave = slave->next; | |
1304 | } else { | |
1305 | bond->first_slave = NULL; /* slave was the last one */ | |
1306 | } | |
1307 | } | |
1308 | ||
1309 | slave->next = NULL; | |
1310 | slave->prev = NULL; | |
1311 | bond->slave_cnt--; | |
1312 | } | |
1313 | ||
f6dc31a8 WC |
1314 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1315 | /* | |
1316 | * You must hold read lock on bond->lock before calling this. | |
1317 | */ | |
1318 | static bool slaves_support_netpoll(struct net_device *bond_dev) | |
1319 | { | |
1320 | struct bonding *bond = netdev_priv(bond_dev); | |
1321 | struct slave *slave; | |
1322 | int i = 0; | |
1323 | bool ret = true; | |
1324 | ||
1325 | bond_for_each_slave(bond, slave, i) { | |
1326 | if ((slave->dev->priv_flags & IFF_DISABLE_NETPOLL) || | |
1327 | !slave->dev->netdev_ops->ndo_poll_controller) | |
1328 | ret = false; | |
1329 | } | |
1330 | return i != 0 && ret; | |
1331 | } | |
1332 | ||
1333 | static void bond_poll_controller(struct net_device *bond_dev) | |
1334 | { | |
1335 | struct net_device *dev = bond_dev->npinfo->netpoll->real_dev; | |
1336 | if (dev != bond_dev) | |
1337 | netpoll_poll_dev(dev); | |
1338 | } | |
1339 | ||
1340 | static void bond_netpoll_cleanup(struct net_device *bond_dev) | |
1341 | { | |
1342 | struct bonding *bond = netdev_priv(bond_dev); | |
1343 | struct slave *slave; | |
1344 | const struct net_device_ops *ops; | |
1345 | int i; | |
1346 | ||
1347 | read_lock(&bond->lock); | |
1348 | bond_dev->npinfo = NULL; | |
1349 | bond_for_each_slave(bond, slave, i) { | |
1350 | if (slave->dev) { | |
1351 | ops = slave->dev->netdev_ops; | |
1352 | if (ops->ndo_netpoll_cleanup) | |
1353 | ops->ndo_netpoll_cleanup(slave->dev); | |
1354 | else | |
1355 | slave->dev->npinfo = NULL; | |
1356 | } | |
1357 | } | |
1358 | read_unlock(&bond->lock); | |
1359 | } | |
1360 | ||
1361 | #else | |
1362 | ||
1363 | static void bond_netpoll_cleanup(struct net_device *bond_dev) | |
1364 | { | |
1365 | } | |
1366 | ||
1367 | #endif | |
1368 | ||
1da177e4 LT |
1369 | /*---------------------------------- IOCTL ----------------------------------*/ |
1370 | ||
4ad072c9 AB |
1371 | static int bond_sethwaddr(struct net_device *bond_dev, |
1372 | struct net_device *slave_dev) | |
1da177e4 | 1373 | { |
5a03cdb7 HE |
1374 | pr_debug("bond_dev=%p\n", bond_dev); |
1375 | pr_debug("slave_dev=%p\n", slave_dev); | |
1376 | pr_debug("slave_dev->addr_len=%d\n", slave_dev->addr_len); | |
1da177e4 LT |
1377 | memcpy(bond_dev->dev_addr, slave_dev->dev_addr, slave_dev->addr_len); |
1378 | return 0; | |
1379 | } | |
1380 | ||
7f353bf2 HX |
1381 | #define BOND_VLAN_FEATURES \ |
1382 | (NETIF_F_VLAN_CHALLENGED | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX | \ | |
1383 | NETIF_F_HW_VLAN_FILTER) | |
8531c5ff | 1384 | |
3d632c3f | 1385 | /* |
8e3babcd | 1386 | * Compute the common dev->feature set available to all slaves. Some |
7f353bf2 HX |
1387 | * feature bits are managed elsewhere, so preserve those feature bits |
1388 | * on the master device. | |
8531c5ff AK |
1389 | */ |
1390 | static int bond_compute_features(struct bonding *bond) | |
1391 | { | |
8531c5ff AK |
1392 | struct slave *slave; |
1393 | struct net_device *bond_dev = bond->dev; | |
7f353bf2 | 1394 | unsigned long features = bond_dev->features; |
278339a4 | 1395 | unsigned long vlan_features = 0; |
3158bf7d MS |
1396 | unsigned short max_hard_header_len = max((u16)ETH_HLEN, |
1397 | bond_dev->hard_header_len); | |
8e3babcd | 1398 | int i; |
8531c5ff | 1399 | |
7f353bf2 | 1400 | features &= ~(NETIF_F_ALL_CSUM | BOND_VLAN_FEATURES); |
b63365a2 HX |
1401 | features |= NETIF_F_GSO_MASK | NETIF_F_NO_CSUM; |
1402 | ||
1403 | if (!bond->first_slave) | |
1404 | goto done; | |
1405 | ||
1406 | features &= ~NETIF_F_ONE_FOR_ALL; | |
7f353bf2 | 1407 | |
278339a4 | 1408 | vlan_features = bond->first_slave->dev->vlan_features; |
54ef3137 | 1409 | bond_for_each_slave(bond, slave, i) { |
b63365a2 HX |
1410 | features = netdev_increment_features(features, |
1411 | slave->dev->features, | |
1412 | NETIF_F_ONE_FOR_ALL); | |
278339a4 JV |
1413 | vlan_features = netdev_increment_features(vlan_features, |
1414 | slave->dev->vlan_features, | |
1415 | NETIF_F_ONE_FOR_ALL); | |
54ef3137 JV |
1416 | if (slave->dev->hard_header_len > max_hard_header_len) |
1417 | max_hard_header_len = slave->dev->hard_header_len; | |
1418 | } | |
8531c5ff | 1419 | |
b63365a2 | 1420 | done: |
7f353bf2 | 1421 | features |= (bond_dev->features & BOND_VLAN_FEATURES); |
b63365a2 | 1422 | bond_dev->features = netdev_fix_features(features, NULL); |
278339a4 | 1423 | bond_dev->vlan_features = netdev_fix_features(vlan_features, NULL); |
54ef3137 | 1424 | bond_dev->hard_header_len = max_hard_header_len; |
8531c5ff AK |
1425 | |
1426 | return 0; | |
1427 | } | |
1428 | ||
872254dd MS |
1429 | static void bond_setup_by_slave(struct net_device *bond_dev, |
1430 | struct net_device *slave_dev) | |
1431 | { | |
454d7c9b | 1432 | struct bonding *bond = netdev_priv(bond_dev); |
d90a162a | 1433 | |
00829823 | 1434 | bond_dev->header_ops = slave_dev->header_ops; |
872254dd MS |
1435 | |
1436 | bond_dev->type = slave_dev->type; | |
1437 | bond_dev->hard_header_len = slave_dev->hard_header_len; | |
1438 | bond_dev->addr_len = slave_dev->addr_len; | |
1439 | ||
1440 | memcpy(bond_dev->broadcast, slave_dev->broadcast, | |
1441 | slave_dev->addr_len); | |
d90a162a | 1442 | bond->setup_by_slave = 1; |
872254dd MS |
1443 | } |
1444 | ||
1da177e4 | 1445 | /* enslave device <slave> to bond device <master> */ |
a77b5325 | 1446 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) |
1da177e4 | 1447 | { |
454d7c9b | 1448 | struct bonding *bond = netdev_priv(bond_dev); |
eb7cc59a | 1449 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
1da177e4 | 1450 | struct slave *new_slave = NULL; |
22bedad3 | 1451 | struct netdev_hw_addr *ha; |
1da177e4 LT |
1452 | struct sockaddr addr; |
1453 | int link_reporting; | |
1454 | int old_features = bond_dev->features; | |
1455 | int res = 0; | |
1456 | ||
552709d5 | 1457 | if (!bond->params.use_carrier && slave_dev->ethtool_ops == NULL && |
eb7cc59a | 1458 | slave_ops->ndo_do_ioctl == NULL) { |
a4aee5c8 JP |
1459 | pr_warning("%s: Warning: no link monitoring support for %s\n", |
1460 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1461 | } |
1462 | ||
1463 | /* bond must be initialized by bond_open() before enslaving */ | |
1464 | if (!(bond_dev->flags & IFF_UP)) { | |
a4aee5c8 JP |
1465 | pr_warning("%s: master_dev is not up in bond_enslave\n", |
1466 | bond_dev->name); | |
1da177e4 LT |
1467 | } |
1468 | ||
1469 | /* already enslaved */ | |
1470 | if (slave_dev->flags & IFF_SLAVE) { | |
5a03cdb7 | 1471 | pr_debug("Error, Device was already enslaved\n"); |
1da177e4 LT |
1472 | return -EBUSY; |
1473 | } | |
1474 | ||
1475 | /* vlan challenged mutual exclusion */ | |
1476 | /* no need to lock since we're protected by rtnl_lock */ | |
1477 | if (slave_dev->features & NETIF_F_VLAN_CHALLENGED) { | |
5a03cdb7 | 1478 | pr_debug("%s: NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
f35188fa | 1479 | if (bond->vlgrp) { |
a4aee5c8 JP |
1480 | pr_err("%s: Error: cannot enslave VLAN challenged slave %s on VLAN enabled bond %s\n", |
1481 | bond_dev->name, slave_dev->name, bond_dev->name); | |
1da177e4 LT |
1482 | return -EPERM; |
1483 | } else { | |
a4aee5c8 JP |
1484 | pr_warning("%s: Warning: enslaved VLAN challenged slave %s. Adding VLANs will be blocked as long as %s is part of bond %s\n", |
1485 | bond_dev->name, slave_dev->name, | |
1486 | slave_dev->name, bond_dev->name); | |
1da177e4 LT |
1487 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
1488 | } | |
1489 | } else { | |
5a03cdb7 | 1490 | pr_debug("%s: ! NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
1da177e4 LT |
1491 | if (bond->slave_cnt == 0) { |
1492 | /* First slave, and it is not VLAN challenged, | |
1493 | * so remove the block of adding VLANs over the bond. | |
1494 | */ | |
1495 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; | |
1496 | } | |
1497 | } | |
1498 | ||
217df670 JV |
1499 | /* |
1500 | * Old ifenslave binaries are no longer supported. These can | |
3d632c3f | 1501 | * be identified with moderate accuracy by the state of the slave: |
217df670 JV |
1502 | * the current ifenslave will set the interface down prior to |
1503 | * enslaving it; the old ifenslave will not. | |
1504 | */ | |
1505 | if ((slave_dev->flags & IFF_UP)) { | |
a4aee5c8 | 1506 | pr_err("%s is up. This may be due to an out of date ifenslave.\n", |
217df670 JV |
1507 | slave_dev->name); |
1508 | res = -EPERM; | |
1509 | goto err_undo_flags; | |
1510 | } | |
1da177e4 | 1511 | |
872254dd MS |
1512 | /* set bonding device ether type by slave - bonding netdevices are |
1513 | * created with ether_setup, so when the slave type is not ARPHRD_ETHER | |
1514 | * there is a need to override some of the type dependent attribs/funcs. | |
1515 | * | |
1516 | * bond ether type mutual exclusion - don't allow slaves of dissimilar | |
1517 | * ether type (eg ARPHRD_ETHER and ARPHRD_INFINIBAND) share the same bond | |
1518 | */ | |
1519 | if (bond->slave_cnt == 0) { | |
e36b9d16 | 1520 | if (bond_dev->type != slave_dev->type) { |
e36b9d16 | 1521 | pr_debug("%s: change device type from %d to %d\n", |
a4aee5c8 JP |
1522 | bond_dev->name, |
1523 | bond_dev->type, slave_dev->type); | |
75c78500 | 1524 | |
3ca5b404 JP |
1525 | res = netdev_bonding_change(bond_dev, |
1526 | NETDEV_PRE_TYPE_CHANGE); | |
1527 | res = notifier_to_errno(res); | |
1528 | if (res) { | |
1529 | pr_err("%s: refused to change device type\n", | |
1530 | bond_dev->name); | |
1531 | res = -EBUSY; | |
1532 | goto err_undo_flags; | |
1533 | } | |
75c78500 | 1534 | |
32a806c1 | 1535 | /* Flush unicast and multicast addresses */ |
a748ee24 | 1536 | dev_uc_flush(bond_dev); |
22bedad3 | 1537 | dev_mc_flush(bond_dev); |
32a806c1 | 1538 | |
e36b9d16 MS |
1539 | if (slave_dev->type != ARPHRD_ETHER) |
1540 | bond_setup_by_slave(bond_dev, slave_dev); | |
1541 | else | |
1542 | ether_setup(bond_dev); | |
75c78500 | 1543 | |
93d9b7d7 JP |
1544 | netdev_bonding_change(bond_dev, |
1545 | NETDEV_POST_TYPE_CHANGE); | |
e36b9d16 | 1546 | } |
872254dd | 1547 | } else if (bond_dev->type != slave_dev->type) { |
a4aee5c8 JP |
1548 | pr_err("%s ether type (%d) is different from other slaves (%d), can not enslave it.\n", |
1549 | slave_dev->name, | |
1550 | slave_dev->type, bond_dev->type); | |
1551 | res = -EINVAL; | |
1552 | goto err_undo_flags; | |
872254dd MS |
1553 | } |
1554 | ||
eb7cc59a | 1555 | if (slave_ops->ndo_set_mac_address == NULL) { |
2ab82852 | 1556 | if (bond->slave_cnt == 0) { |
a4aee5c8 JP |
1557 | pr_warning("%s: Warning: The first slave device specified does not support setting the MAC address. Setting fail_over_mac to active.", |
1558 | bond_dev->name); | |
3915c1e8 JV |
1559 | bond->params.fail_over_mac = BOND_FOM_ACTIVE; |
1560 | } else if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { | |
a4aee5c8 JP |
1561 | 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", |
1562 | bond_dev->name); | |
2ab82852 MS |
1563 | res = -EOPNOTSUPP; |
1564 | goto err_undo_flags; | |
1565 | } | |
1da177e4 LT |
1566 | } |
1567 | ||
c20811a7 JP |
1568 | /* If this is the first slave, then we need to set the master's hardware |
1569 | * address to be the same as the slave's. */ | |
1570 | if (bond->slave_cnt == 0) | |
1571 | memcpy(bond->dev->dev_addr, slave_dev->dev_addr, | |
1572 | slave_dev->addr_len); | |
1573 | ||
1574 | ||
243cb4e5 | 1575 | new_slave = kzalloc(sizeof(struct slave), GFP_KERNEL); |
1da177e4 LT |
1576 | if (!new_slave) { |
1577 | res = -ENOMEM; | |
1578 | goto err_undo_flags; | |
1579 | } | |
1580 | ||
bb1d9123 AG |
1581 | /* |
1582 | * Set the new_slave's queue_id to be zero. Queue ID mapping | |
1583 | * is set via sysfs or module option if desired. | |
1584 | */ | |
1585 | new_slave->queue_id = 0; | |
1586 | ||
b15ba0fb JP |
1587 | /* Save slave's original mtu and then set it to match the bond */ |
1588 | new_slave->original_mtu = slave_dev->mtu; | |
1589 | res = dev_set_mtu(slave_dev, bond->dev->mtu); | |
1590 | if (res) { | |
1591 | pr_debug("Error %d calling dev_set_mtu\n", res); | |
1592 | goto err_free; | |
1593 | } | |
1594 | ||
217df670 JV |
1595 | /* |
1596 | * Save slave's original ("permanent") mac address for modes | |
1597 | * that need it, and for restoring it upon release, and then | |
1598 | * set it to the master's address | |
1599 | */ | |
1600 | memcpy(new_slave->perm_hwaddr, slave_dev->dev_addr, ETH_ALEN); | |
1da177e4 | 1601 | |
dd957c57 | 1602 | if (!bond->params.fail_over_mac) { |
2ab82852 MS |
1603 | /* |
1604 | * Set slave to master's mac address. The application already | |
1605 | * set the master's mac address to that of the first slave | |
1606 | */ | |
1607 | memcpy(addr.sa_data, bond_dev->dev_addr, bond_dev->addr_len); | |
1608 | addr.sa_family = slave_dev->type; | |
1609 | res = dev_set_mac_address(slave_dev, &addr); | |
1610 | if (res) { | |
5a03cdb7 | 1611 | pr_debug("Error %d calling set_mac_address\n", res); |
b15ba0fb | 1612 | goto err_restore_mtu; |
2ab82852 | 1613 | } |
217df670 | 1614 | } |
1da177e4 | 1615 | |
c2edacf8 JV |
1616 | res = netdev_set_master(slave_dev, bond_dev); |
1617 | if (res) { | |
5a03cdb7 | 1618 | pr_debug("Error %d calling netdev_set_master\n", res); |
569f0c4d | 1619 | goto err_restore_mac; |
c2edacf8 | 1620 | } |
217df670 JV |
1621 | /* open the slave since the application closed it */ |
1622 | res = dev_open(slave_dev); | |
1623 | if (res) { | |
3d632c3f | 1624 | pr_debug("Opening slave %s failed\n", slave_dev->name); |
569f0c4d | 1625 | goto err_unset_master; |
1da177e4 LT |
1626 | } |
1627 | ||
1da177e4 | 1628 | new_slave->dev = slave_dev; |
0b680e75 | 1629 | slave_dev->priv_flags |= IFF_BONDING; |
1da177e4 | 1630 | |
58402054 | 1631 | if (bond_is_lb(bond)) { |
1da177e4 LT |
1632 | /* bond_alb_init_slave() must be called before all other stages since |
1633 | * it might fail and we do not want to have to undo everything | |
1634 | */ | |
1635 | res = bond_alb_init_slave(bond, new_slave); | |
3d632c3f | 1636 | if (res) |
569f0c4d | 1637 | goto err_close; |
1da177e4 LT |
1638 | } |
1639 | ||
1640 | /* If the mode USES_PRIMARY, then the new slave gets the | |
1641 | * master's promisc (and mc) settings only if it becomes the | |
1642 | * curr_active_slave, and that is taken care of later when calling | |
1643 | * bond_change_active() | |
1644 | */ | |
1645 | if (!USES_PRIMARY(bond->params.mode)) { | |
1646 | /* set promiscuity level to new slave */ | |
1647 | if (bond_dev->flags & IFF_PROMISC) { | |
7e1a1ac1 WC |
1648 | res = dev_set_promiscuity(slave_dev, 1); |
1649 | if (res) | |
1650 | goto err_close; | |
1da177e4 LT |
1651 | } |
1652 | ||
1653 | /* set allmulti level to new slave */ | |
1654 | if (bond_dev->flags & IFF_ALLMULTI) { | |
7e1a1ac1 WC |
1655 | res = dev_set_allmulti(slave_dev, 1); |
1656 | if (res) | |
1657 | goto err_close; | |
1da177e4 LT |
1658 | } |
1659 | ||
b9e40857 | 1660 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 1661 | /* upload master's mc_list to new slave */ |
22bedad3 JP |
1662 | netdev_for_each_mc_addr(ha, bond_dev) |
1663 | dev_mc_add(slave_dev, ha->addr); | |
b9e40857 | 1664 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
1665 | } |
1666 | ||
1667 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1668 | /* add lacpdu mc addr to mc list */ | |
1669 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; | |
1670 | ||
22bedad3 | 1671 | dev_mc_add(slave_dev, lacpdu_multicast); |
1da177e4 LT |
1672 | } |
1673 | ||
1674 | bond_add_vlans_on_slave(bond, slave_dev); | |
1675 | ||
1676 | write_lock_bh(&bond->lock); | |
1677 | ||
1678 | bond_attach_slave(bond, new_slave); | |
1679 | ||
1680 | new_slave->delay = 0; | |
1681 | new_slave->link_failure_count = 0; | |
1682 | ||
8531c5ff AK |
1683 | bond_compute_features(bond); |
1684 | ||
3915c1e8 JV |
1685 | write_unlock_bh(&bond->lock); |
1686 | ||
1687 | read_lock(&bond->lock); | |
1688 | ||
f5b2b966 JV |
1689 | new_slave->last_arp_rx = jiffies; |
1690 | ||
1da177e4 LT |
1691 | if (bond->params.miimon && !bond->params.use_carrier) { |
1692 | link_reporting = bond_check_dev_link(bond, slave_dev, 1); | |
1693 | ||
1694 | if ((link_reporting == -1) && !bond->params.arp_interval) { | |
1695 | /* | |
1696 | * miimon is set but a bonded network driver | |
1697 | * does not support ETHTOOL/MII and | |
1698 | * arp_interval is not set. Note: if | |
1699 | * use_carrier is enabled, we will never go | |
1700 | * here (because netif_carrier is always | |
1701 | * supported); thus, we don't need to change | |
1702 | * the messages for netif_carrier. | |
1703 | */ | |
a4aee5c8 | 1704 | 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 | 1705 | bond_dev->name, slave_dev->name); |
1da177e4 LT |
1706 | } else if (link_reporting == -1) { |
1707 | /* unable get link status using mii/ethtool */ | |
a4aee5c8 JP |
1708 | 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", |
1709 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1710 | } |
1711 | } | |
1712 | ||
1713 | /* check for initial state */ | |
1714 | if (!bond->params.miimon || | |
1715 | (bond_check_dev_link(bond, slave_dev, 0) == BMSR_LSTATUS)) { | |
1716 | if (bond->params.updelay) { | |
a4aee5c8 | 1717 | pr_debug("Initial state of slave_dev is BOND_LINK_BACK\n"); |
1da177e4 LT |
1718 | new_slave->link = BOND_LINK_BACK; |
1719 | new_slave->delay = bond->params.updelay; | |
1720 | } else { | |
a4aee5c8 | 1721 | pr_debug("Initial state of slave_dev is BOND_LINK_UP\n"); |
1da177e4 LT |
1722 | new_slave->link = BOND_LINK_UP; |
1723 | } | |
1724 | new_slave->jiffies = jiffies; | |
1725 | } else { | |
a4aee5c8 | 1726 | pr_debug("Initial state of slave_dev is BOND_LINK_DOWN\n"); |
1da177e4 LT |
1727 | new_slave->link = BOND_LINK_DOWN; |
1728 | } | |
1729 | ||
1730 | if (bond_update_speed_duplex(new_slave) && | |
1731 | (new_slave->link != BOND_LINK_DOWN)) { | |
a4aee5c8 JP |
1732 | pr_warning("%s: Warning: failed to get speed and duplex from %s, assumed to be 100Mb/sec and Full.\n", |
1733 | bond_dev->name, new_slave->dev->name); | |
1da177e4 LT |
1734 | |
1735 | if (bond->params.mode == BOND_MODE_8023AD) { | |
a4aee5c8 JP |
1736 | pr_warning("%s: Warning: Operation of 802.3ad mode requires ETHTOOL support in base driver for proper aggregator selection.\n", |
1737 | bond_dev->name); | |
1da177e4 LT |
1738 | } |
1739 | } | |
1740 | ||
1741 | if (USES_PRIMARY(bond->params.mode) && bond->params.primary[0]) { | |
1742 | /* if there is a primary slave, remember it */ | |
a549952a | 1743 | if (strcmp(bond->params.primary, new_slave->dev->name) == 0) { |
1da177e4 | 1744 | bond->primary_slave = new_slave; |
a549952a JP |
1745 | bond->force_primary = true; |
1746 | } | |
1da177e4 LT |
1747 | } |
1748 | ||
3915c1e8 JV |
1749 | write_lock_bh(&bond->curr_slave_lock); |
1750 | ||
1da177e4 LT |
1751 | switch (bond->params.mode) { |
1752 | case BOND_MODE_ACTIVEBACKUP: | |
8a8e447b JV |
1753 | bond_set_slave_inactive_flags(new_slave); |
1754 | bond_select_active_slave(bond); | |
1da177e4 LT |
1755 | break; |
1756 | case BOND_MODE_8023AD: | |
1757 | /* in 802.3ad mode, the internal mechanism | |
1758 | * will activate the slaves in the selected | |
1759 | * aggregator | |
1760 | */ | |
1761 | bond_set_slave_inactive_flags(new_slave); | |
1762 | /* if this is the first slave */ | |
1763 | if (bond->slave_cnt == 1) { | |
1764 | SLAVE_AD_INFO(new_slave).id = 1; | |
1765 | /* Initialize AD with the number of times that the AD timer is called in 1 second | |
1766 | * can be called only after the mac address of the bond is set | |
1767 | */ | |
1768 | bond_3ad_initialize(bond, 1000/AD_TIMER_INTERVAL, | |
1769 | bond->params.lacp_fast); | |
1770 | } else { | |
1771 | SLAVE_AD_INFO(new_slave).id = | |
1772 | SLAVE_AD_INFO(new_slave->prev).id + 1; | |
1773 | } | |
1774 | ||
1775 | bond_3ad_bind_slave(new_slave); | |
1776 | break; | |
1777 | case BOND_MODE_TLB: | |
1778 | case BOND_MODE_ALB: | |
1779 | new_slave->state = BOND_STATE_ACTIVE; | |
059fe7a5 | 1780 | bond_set_slave_inactive_flags(new_slave); |
5a29f789 | 1781 | bond_select_active_slave(bond); |
1da177e4 LT |
1782 | break; |
1783 | default: | |
5a03cdb7 | 1784 | pr_debug("This slave is always active in trunk mode\n"); |
1da177e4 LT |
1785 | |
1786 | /* always active in trunk mode */ | |
1787 | new_slave->state = BOND_STATE_ACTIVE; | |
1788 | ||
1789 | /* In trunking mode there is little meaning to curr_active_slave | |
1790 | * anyway (it holds no special properties of the bond device), | |
1791 | * so we can change it without calling change_active_interface() | |
1792 | */ | |
3d632c3f | 1793 | if (!bond->curr_active_slave) |
1da177e4 | 1794 | bond->curr_active_slave = new_slave; |
3d632c3f | 1795 | |
1da177e4 LT |
1796 | break; |
1797 | } /* switch(bond_mode) */ | |
1798 | ||
3915c1e8 JV |
1799 | write_unlock_bh(&bond->curr_slave_lock); |
1800 | ||
ff59c456 JV |
1801 | bond_set_carrier(bond); |
1802 | ||
f6dc31a8 | 1803 | #ifdef CONFIG_NET_POLL_CONTROLLER |
c22d7ac8 AG |
1804 | /* |
1805 | * Netpoll and bonding is broken, make sure it is not initialized | |
1806 | * until it is fixed. | |
1807 | */ | |
1808 | if (disable_netpoll) { | |
f6dc31a8 | 1809 | bond_dev->priv_flags |= IFF_DISABLE_NETPOLL; |
c22d7ac8 AG |
1810 | } else { |
1811 | if (slaves_support_netpoll(bond_dev)) { | |
1812 | bond_dev->priv_flags &= ~IFF_DISABLE_NETPOLL; | |
1813 | if (bond_dev->npinfo) | |
1814 | slave_dev->npinfo = bond_dev->npinfo; | |
1815 | } else if (!(bond_dev->priv_flags & IFF_DISABLE_NETPOLL)) { | |
1816 | bond_dev->priv_flags |= IFF_DISABLE_NETPOLL; | |
1817 | pr_info("New slave device %s does not support netpoll\n", | |
1818 | slave_dev->name); | |
1819 | pr_info("Disabling netpoll support for %s\n", bond_dev->name); | |
1820 | } | |
f6dc31a8 WC |
1821 | } |
1822 | #endif | |
3915c1e8 | 1823 | read_unlock(&bond->lock); |
1da177e4 | 1824 | |
b76cdba9 MW |
1825 | res = bond_create_slave_symlinks(bond_dev, slave_dev); |
1826 | if (res) | |
569f0c4d | 1827 | goto err_close; |
b76cdba9 | 1828 | |
a4aee5c8 JP |
1829 | pr_info("%s: enslaving %s as a%s interface with a%s link.\n", |
1830 | bond_dev->name, slave_dev->name, | |
1831 | new_slave->state == BOND_STATE_ACTIVE ? "n active" : " backup", | |
1832 | new_slave->link != BOND_LINK_DOWN ? "n up" : " down"); | |
1da177e4 LT |
1833 | |
1834 | /* enslave is successful */ | |
1835 | return 0; | |
1836 | ||
1837 | /* Undo stages on error */ | |
1da177e4 LT |
1838 | err_close: |
1839 | dev_close(slave_dev); | |
1840 | ||
569f0c4d JV |
1841 | err_unset_master: |
1842 | netdev_set_master(slave_dev, NULL); | |
1843 | ||
1da177e4 | 1844 | err_restore_mac: |
dd957c57 | 1845 | if (!bond->params.fail_over_mac) { |
3915c1e8 JV |
1846 | /* XXX TODO - fom follow mode needs to change master's |
1847 | * MAC if this slave's MAC is in use by the bond, or at | |
1848 | * least print a warning. | |
1849 | */ | |
2ab82852 MS |
1850 | memcpy(addr.sa_data, new_slave->perm_hwaddr, ETH_ALEN); |
1851 | addr.sa_family = slave_dev->type; | |
1852 | dev_set_mac_address(slave_dev, &addr); | |
1853 | } | |
1da177e4 | 1854 | |
b15ba0fb JP |
1855 | err_restore_mtu: |
1856 | dev_set_mtu(slave_dev, new_slave->original_mtu); | |
1857 | ||
1da177e4 LT |
1858 | err_free: |
1859 | kfree(new_slave); | |
1860 | ||
1861 | err_undo_flags: | |
1862 | bond_dev->features = old_features; | |
3d632c3f | 1863 | |
1da177e4 LT |
1864 | return res; |
1865 | } | |
1866 | ||
1867 | /* | |
1868 | * Try to release the slave device <slave> from the bond device <master> | |
1869 | * It is legal to access curr_active_slave without a lock because all the function | |
1870 | * is write-locked. | |
1871 | * | |
1872 | * The rules for slave state should be: | |
1873 | * for Active/Backup: | |
1874 | * Active stays on all backups go down | |
1875 | * for Bonded connections: | |
1876 | * The first up interface should be left on and all others downed. | |
1877 | */ | |
a77b5325 | 1878 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev) |
1da177e4 | 1879 | { |
454d7c9b | 1880 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
1881 | struct slave *slave, *oldcurrent; |
1882 | struct sockaddr addr; | |
1da177e4 LT |
1883 | |
1884 | /* slave is not a slave or master is not master of this slave */ | |
1885 | if (!(slave_dev->flags & IFF_SLAVE) || | |
1886 | (slave_dev->master != bond_dev)) { | |
a4aee5c8 | 1887 | pr_err("%s: Error: cannot release %s.\n", |
1da177e4 LT |
1888 | bond_dev->name, slave_dev->name); |
1889 | return -EINVAL; | |
1890 | } | |
1891 | ||
f6dc31a8 | 1892 | netdev_bonding_change(bond_dev, NETDEV_BONDING_DESLAVE); |
1da177e4 LT |
1893 | write_lock_bh(&bond->lock); |
1894 | ||
1895 | slave = bond_get_slave_by_dev(bond, slave_dev); | |
1896 | if (!slave) { | |
1897 | /* not a slave of this bond */ | |
a4aee5c8 JP |
1898 | pr_info("%s: %s not enslaved\n", |
1899 | bond_dev->name, slave_dev->name); | |
f5e2a7b2 | 1900 | write_unlock_bh(&bond->lock); |
1da177e4 LT |
1901 | return -EINVAL; |
1902 | } | |
1903 | ||
3915c1e8 | 1904 | if (!bond->params.fail_over_mac) { |
8e95a202 JP |
1905 | if (!compare_ether_addr(bond_dev->dev_addr, slave->perm_hwaddr) && |
1906 | bond->slave_cnt > 1) | |
a4aee5c8 JP |
1907 | 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", |
1908 | bond_dev->name, slave_dev->name, | |
1909 | slave->perm_hwaddr, | |
1910 | bond_dev->name, slave_dev->name); | |
1da177e4 LT |
1911 | } |
1912 | ||
1913 | /* Inform AD package of unbinding of slave. */ | |
1914 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1915 | /* must be called before the slave is | |
1916 | * detached from the list | |
1917 | */ | |
1918 | bond_3ad_unbind_slave(slave); | |
1919 | } | |
1920 | ||
a4aee5c8 JP |
1921 | pr_info("%s: releasing %s interface %s\n", |
1922 | bond_dev->name, | |
1923 | (slave->state == BOND_STATE_ACTIVE) ? "active" : "backup", | |
1924 | slave_dev->name); | |
1da177e4 LT |
1925 | |
1926 | oldcurrent = bond->curr_active_slave; | |
1927 | ||
1928 | bond->current_arp_slave = NULL; | |
1929 | ||
1930 | /* release the slave from its bond */ | |
1931 | bond_detach_slave(bond, slave); | |
1932 | ||
8531c5ff AK |
1933 | bond_compute_features(bond); |
1934 | ||
3d632c3f | 1935 | if (bond->primary_slave == slave) |
1da177e4 | 1936 | bond->primary_slave = NULL; |
1da177e4 | 1937 | |
3d632c3f | 1938 | if (oldcurrent == slave) |
1da177e4 | 1939 | bond_change_active_slave(bond, NULL); |
1da177e4 | 1940 | |
58402054 | 1941 | if (bond_is_lb(bond)) { |
1da177e4 LT |
1942 | /* Must be called only after the slave has been |
1943 | * detached from the list and the curr_active_slave | |
1944 | * has been cleared (if our_slave == old_current), | |
1945 | * but before a new active slave is selected. | |
1946 | */ | |
2543331d | 1947 | write_unlock_bh(&bond->lock); |
1da177e4 | 1948 | bond_alb_deinit_slave(bond, slave); |
2543331d | 1949 | write_lock_bh(&bond->lock); |
1da177e4 LT |
1950 | } |
1951 | ||
059fe7a5 JV |
1952 | if (oldcurrent == slave) { |
1953 | /* | |
1954 | * Note that we hold RTNL over this sequence, so there | |
1955 | * is no concern that another slave add/remove event | |
1956 | * will interfere. | |
1957 | */ | |
1958 | write_unlock_bh(&bond->lock); | |
1959 | read_lock(&bond->lock); | |
1960 | write_lock_bh(&bond->curr_slave_lock); | |
1961 | ||
1da177e4 LT |
1962 | bond_select_active_slave(bond); |
1963 | ||
059fe7a5 JV |
1964 | write_unlock_bh(&bond->curr_slave_lock); |
1965 | read_unlock(&bond->lock); | |
1966 | write_lock_bh(&bond->lock); | |
1967 | } | |
1968 | ||
1da177e4 | 1969 | if (bond->slave_cnt == 0) { |
ff59c456 JV |
1970 | bond_set_carrier(bond); |
1971 | ||
1da177e4 LT |
1972 | /* if the last slave was removed, zero the mac address |
1973 | * of the master so it will be set by the application | |
1974 | * to the mac address of the first slave | |
1975 | */ | |
1976 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); | |
1977 | ||
f35188fa | 1978 | if (!bond->vlgrp) { |
1da177e4 LT |
1979 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
1980 | } else { | |
a4aee5c8 JP |
1981 | pr_warning("%s: Warning: clearing HW address of %s while it still has VLANs.\n", |
1982 | bond_dev->name, bond_dev->name); | |
1983 | pr_warning("%s: When re-adding slaves, make sure the bond's HW address matches its VLANs'.\n", | |
1984 | bond_dev->name); | |
1da177e4 LT |
1985 | } |
1986 | } else if ((bond_dev->features & NETIF_F_VLAN_CHALLENGED) && | |
1987 | !bond_has_challenged_slaves(bond)) { | |
a4aee5c8 JP |
1988 | pr_info("%s: last VLAN challenged slave %s left bond %s. VLAN blocking is removed\n", |
1989 | bond_dev->name, slave_dev->name, bond_dev->name); | |
1da177e4 LT |
1990 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; |
1991 | } | |
1992 | ||
1993 | write_unlock_bh(&bond->lock); | |
1994 | ||
b76cdba9 MW |
1995 | /* must do this from outside any spinlocks */ |
1996 | bond_destroy_slave_symlinks(bond_dev, slave_dev); | |
1997 | ||
1da177e4 LT |
1998 | bond_del_vlans_from_slave(bond, slave_dev); |
1999 | ||
2000 | /* If the mode USES_PRIMARY, then we should only remove its | |
2001 | * promisc and mc settings if it was the curr_active_slave, but that was | |
2002 | * already taken care of above when we detached the slave | |
2003 | */ | |
2004 | if (!USES_PRIMARY(bond->params.mode)) { | |
2005 | /* unset promiscuity level from slave */ | |
3d632c3f | 2006 | if (bond_dev->flags & IFF_PROMISC) |
1da177e4 | 2007 | dev_set_promiscuity(slave_dev, -1); |
1da177e4 LT |
2008 | |
2009 | /* unset allmulti level from slave */ | |
3d632c3f | 2010 | if (bond_dev->flags & IFF_ALLMULTI) |
1da177e4 | 2011 | dev_set_allmulti(slave_dev, -1); |
1da177e4 LT |
2012 | |
2013 | /* flush master's mc_list from slave */ | |
b9e40857 | 2014 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 2015 | bond_mc_list_flush(bond_dev, slave_dev); |
b9e40857 | 2016 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
2017 | } |
2018 | ||
2019 | netdev_set_master(slave_dev, NULL); | |
2020 | ||
f6dc31a8 WC |
2021 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2022 | read_lock_bh(&bond->lock); | |
c22d7ac8 AG |
2023 | |
2024 | /* Make sure netpoll over stays disabled until fixed. */ | |
2025 | if (!disable_netpoll) | |
2026 | if (slaves_support_netpoll(bond_dev)) | |
2027 | bond_dev->priv_flags &= ~IFF_DISABLE_NETPOLL; | |
f6dc31a8 WC |
2028 | read_unlock_bh(&bond->lock); |
2029 | if (slave_dev->netdev_ops->ndo_netpoll_cleanup) | |
2030 | slave_dev->netdev_ops->ndo_netpoll_cleanup(slave_dev); | |
2031 | else | |
2032 | slave_dev->npinfo = NULL; | |
2033 | #endif | |
2034 | ||
1da177e4 LT |
2035 | /* close slave before restoring its mac address */ |
2036 | dev_close(slave_dev); | |
2037 | ||
3915c1e8 | 2038 | if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { |
2ab82852 MS |
2039 | /* restore original ("permanent") mac address */ |
2040 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); | |
2041 | addr.sa_family = slave_dev->type; | |
2042 | dev_set_mac_address(slave_dev, &addr); | |
2043 | } | |
1da177e4 | 2044 | |
b15ba0fb JP |
2045 | dev_set_mtu(slave_dev, slave->original_mtu); |
2046 | ||
8f903c70 | 2047 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
f5b2b966 JV |
2048 | IFF_SLAVE_INACTIVE | IFF_BONDING | |
2049 | IFF_SLAVE_NEEDARP); | |
1da177e4 LT |
2050 | |
2051 | kfree(slave); | |
2052 | ||
2053 | return 0; /* deletion OK */ | |
2054 | } | |
2055 | ||
d90a162a | 2056 | /* |
3d632c3f | 2057 | * First release a slave and than destroy the bond if no more slaves are left. |
d90a162a MS |
2058 | * Must be under rtnl_lock when this function is called. |
2059 | */ | |
3d632c3f SH |
2060 | int bond_release_and_destroy(struct net_device *bond_dev, |
2061 | struct net_device *slave_dev) | |
d90a162a | 2062 | { |
454d7c9b | 2063 | struct bonding *bond = netdev_priv(bond_dev); |
d90a162a MS |
2064 | int ret; |
2065 | ||
2066 | ret = bond_release(bond_dev, slave_dev); | |
2067 | if ((ret == 0) && (bond->slave_cnt == 0)) { | |
a4aee5c8 JP |
2068 | pr_info("%s: destroying bond %s.\n", |
2069 | bond_dev->name, bond_dev->name); | |
9e71626c | 2070 | unregister_netdevice(bond_dev); |
d90a162a MS |
2071 | } |
2072 | return ret; | |
2073 | } | |
2074 | ||
1da177e4 LT |
2075 | /* |
2076 | * This function releases all slaves. | |
2077 | */ | |
2078 | static int bond_release_all(struct net_device *bond_dev) | |
2079 | { | |
454d7c9b | 2080 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2081 | struct slave *slave; |
2082 | struct net_device *slave_dev; | |
2083 | struct sockaddr addr; | |
2084 | ||
2085 | write_lock_bh(&bond->lock); | |
2086 | ||
ff59c456 JV |
2087 | netif_carrier_off(bond_dev); |
2088 | ||
3d632c3f | 2089 | if (bond->slave_cnt == 0) |
1da177e4 | 2090 | goto out; |
1da177e4 LT |
2091 | |
2092 | bond->current_arp_slave = NULL; | |
2093 | bond->primary_slave = NULL; | |
2094 | bond_change_active_slave(bond, NULL); | |
2095 | ||
2096 | while ((slave = bond->first_slave) != NULL) { | |
2097 | /* Inform AD package of unbinding of slave | |
2098 | * before slave is detached from the list. | |
2099 | */ | |
3d632c3f | 2100 | if (bond->params.mode == BOND_MODE_8023AD) |
1da177e4 | 2101 | bond_3ad_unbind_slave(slave); |
1da177e4 LT |
2102 | |
2103 | slave_dev = slave->dev; | |
2104 | bond_detach_slave(bond, slave); | |
2105 | ||
2543331d JV |
2106 | /* now that the slave is detached, unlock and perform |
2107 | * all the undo steps that should not be called from | |
2108 | * within a lock. | |
2109 | */ | |
2110 | write_unlock_bh(&bond->lock); | |
2111 | ||
58402054 | 2112 | if (bond_is_lb(bond)) { |
1da177e4 LT |
2113 | /* must be called only after the slave |
2114 | * has been detached from the list | |
2115 | */ | |
2116 | bond_alb_deinit_slave(bond, slave); | |
2117 | } | |
2118 | ||
8531c5ff AK |
2119 | bond_compute_features(bond); |
2120 | ||
b76cdba9 | 2121 | bond_destroy_slave_symlinks(bond_dev, slave_dev); |
1da177e4 LT |
2122 | bond_del_vlans_from_slave(bond, slave_dev); |
2123 | ||
2124 | /* If the mode USES_PRIMARY, then we should only remove its | |
2125 | * promisc and mc settings if it was the curr_active_slave, but that was | |
2126 | * already taken care of above when we detached the slave | |
2127 | */ | |
2128 | if (!USES_PRIMARY(bond->params.mode)) { | |
2129 | /* unset promiscuity level from slave */ | |
3d632c3f | 2130 | if (bond_dev->flags & IFF_PROMISC) |
1da177e4 | 2131 | dev_set_promiscuity(slave_dev, -1); |
1da177e4 LT |
2132 | |
2133 | /* unset allmulti level from slave */ | |
3d632c3f | 2134 | if (bond_dev->flags & IFF_ALLMULTI) |
1da177e4 | 2135 | dev_set_allmulti(slave_dev, -1); |
1da177e4 LT |
2136 | |
2137 | /* flush master's mc_list from slave */ | |
b9e40857 | 2138 | netif_addr_lock_bh(bond_dev); |
1da177e4 | 2139 | bond_mc_list_flush(bond_dev, slave_dev); |
b9e40857 | 2140 | netif_addr_unlock_bh(bond_dev); |
1da177e4 LT |
2141 | } |
2142 | ||
2143 | netdev_set_master(slave_dev, NULL); | |
2144 | ||
2145 | /* close slave before restoring its mac address */ | |
2146 | dev_close(slave_dev); | |
2147 | ||
dd957c57 | 2148 | if (!bond->params.fail_over_mac) { |
2ab82852 MS |
2149 | /* restore original ("permanent") mac address*/ |
2150 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); | |
2151 | addr.sa_family = slave_dev->type; | |
2152 | dev_set_mac_address(slave_dev, &addr); | |
2153 | } | |
1da177e4 | 2154 | |
8f903c70 JV |
2155 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
2156 | IFF_SLAVE_INACTIVE); | |
1da177e4 LT |
2157 | |
2158 | kfree(slave); | |
2159 | ||
2160 | /* re-acquire the lock before getting the next slave */ | |
2161 | write_lock_bh(&bond->lock); | |
2162 | } | |
2163 | ||
2164 | /* zero the mac address of the master so it will be | |
2165 | * set by the application to the mac address of the | |
2166 | * first slave | |
2167 | */ | |
2168 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); | |
2169 | ||
f35188fa | 2170 | if (!bond->vlgrp) { |
1da177e4 | 2171 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
f35188fa | 2172 | } else { |
a4aee5c8 JP |
2173 | pr_warning("%s: Warning: clearing HW address of %s while it still has VLANs.\n", |
2174 | bond_dev->name, bond_dev->name); | |
2175 | pr_warning("%s: When re-adding slaves, make sure the bond's HW address matches its VLANs'.\n", | |
2176 | bond_dev->name); | |
1da177e4 LT |
2177 | } |
2178 | ||
a4aee5c8 | 2179 | pr_info("%s: released all slaves\n", bond_dev->name); |
1da177e4 LT |
2180 | |
2181 | out: | |
2182 | write_unlock_bh(&bond->lock); | |
2183 | ||
2184 | return 0; | |
2185 | } | |
2186 | ||
2187 | /* | |
2188 | * This function changes the active slave to slave <slave_dev>. | |
2189 | * It returns -EINVAL in the following cases. | |
2190 | * - <slave_dev> is not found in the list. | |
2191 | * - There is not active slave now. | |
2192 | * - <slave_dev> is already active. | |
2193 | * - The link state of <slave_dev> is not BOND_LINK_UP. | |
2194 | * - <slave_dev> is not running. | |
3d632c3f SH |
2195 | * In these cases, this function does nothing. |
2196 | * In the other cases, current_slave pointer is changed and 0 is returned. | |
1da177e4 LT |
2197 | */ |
2198 | static int bond_ioctl_change_active(struct net_device *bond_dev, struct net_device *slave_dev) | |
2199 | { | |
454d7c9b | 2200 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2201 | struct slave *old_active = NULL; |
2202 | struct slave *new_active = NULL; | |
2203 | int res = 0; | |
2204 | ||
3d632c3f | 2205 | if (!USES_PRIMARY(bond->params.mode)) |
1da177e4 | 2206 | return -EINVAL; |
1da177e4 LT |
2207 | |
2208 | /* Verify that master_dev is indeed the master of slave_dev */ | |
3d632c3f | 2209 | if (!(slave_dev->flags & IFF_SLAVE) || (slave_dev->master != bond_dev)) |
1da177e4 | 2210 | return -EINVAL; |
1da177e4 | 2211 | |
059fe7a5 | 2212 | read_lock(&bond->lock); |
1da177e4 | 2213 | |
059fe7a5 | 2214 | read_lock(&bond->curr_slave_lock); |
1da177e4 | 2215 | old_active = bond->curr_active_slave; |
059fe7a5 JV |
2216 | read_unlock(&bond->curr_slave_lock); |
2217 | ||
1da177e4 LT |
2218 | new_active = bond_get_slave_by_dev(bond, slave_dev); |
2219 | ||
2220 | /* | |
2221 | * Changing to the current active: do nothing; return success. | |
2222 | */ | |
2223 | if (new_active && (new_active == old_active)) { | |
059fe7a5 | 2224 | read_unlock(&bond->lock); |
1da177e4 LT |
2225 | return 0; |
2226 | } | |
2227 | ||
2228 | if ((new_active) && | |
2229 | (old_active) && | |
2230 | (new_active->link == BOND_LINK_UP) && | |
2231 | IS_UP(new_active->dev)) { | |
059fe7a5 | 2232 | write_lock_bh(&bond->curr_slave_lock); |
1da177e4 | 2233 | bond_change_active_slave(bond, new_active); |
059fe7a5 | 2234 | write_unlock_bh(&bond->curr_slave_lock); |
3d632c3f | 2235 | } else |
1da177e4 | 2236 | res = -EINVAL; |
1da177e4 | 2237 | |
059fe7a5 | 2238 | read_unlock(&bond->lock); |
1da177e4 LT |
2239 | |
2240 | return res; | |
2241 | } | |
2242 | ||
1da177e4 LT |
2243 | static int bond_info_query(struct net_device *bond_dev, struct ifbond *info) |
2244 | { | |
454d7c9b | 2245 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
2246 | |
2247 | info->bond_mode = bond->params.mode; | |
2248 | info->miimon = bond->params.miimon; | |
2249 | ||
6603a6f2 | 2250 | read_lock(&bond->lock); |
1da177e4 | 2251 | info->num_slaves = bond->slave_cnt; |
6603a6f2 | 2252 | read_unlock(&bond->lock); |
1da177e4 LT |
2253 | |
2254 | return 0; | |
2255 | } | |
2256 | ||
2257 | static int bond_slave_info_query(struct net_device *bond_dev, struct ifslave *info) | |
2258 | { | |
454d7c9b | 2259 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 2260 | struct slave *slave; |
689c96cc | 2261 | int i, res = -ENODEV; |
1da177e4 | 2262 | |
6603a6f2 | 2263 | read_lock(&bond->lock); |
1da177e4 LT |
2264 | |
2265 | bond_for_each_slave(bond, slave, i) { | |
2266 | if (i == (int)info->slave_id) { | |
689c96cc ED |
2267 | res = 0; |
2268 | strcpy(info->slave_name, slave->dev->name); | |
2269 | info->link = slave->link; | |
2270 | info->state = slave->state; | |
2271 | info->link_failure_count = slave->link_failure_count; | |
1da177e4 LT |
2272 | break; |
2273 | } | |
2274 | } | |
2275 | ||
6603a6f2 | 2276 | read_unlock(&bond->lock); |
1da177e4 | 2277 | |
689c96cc | 2278 | return res; |
1da177e4 LT |
2279 | } |
2280 | ||
2281 | /*-------------------------------- Monitoring -------------------------------*/ | |
2282 | ||
1da177e4 | 2283 | |
f0c76d61 JV |
2284 | static int bond_miimon_inspect(struct bonding *bond) |
2285 | { | |
2286 | struct slave *slave; | |
2287 | int i, link_state, commit = 0; | |
41f89100 JP |
2288 | bool ignore_updelay; |
2289 | ||
2290 | ignore_updelay = !bond->curr_active_slave ? true : false; | |
1da177e4 LT |
2291 | |
2292 | bond_for_each_slave(bond, slave, i) { | |
f0c76d61 | 2293 | slave->new_link = BOND_LINK_NOCHANGE; |
1da177e4 | 2294 | |
f0c76d61 | 2295 | link_state = bond_check_dev_link(bond, slave->dev, 0); |
1da177e4 LT |
2296 | |
2297 | switch (slave->link) { | |
f0c76d61 JV |
2298 | case BOND_LINK_UP: |
2299 | if (link_state) | |
2300 | continue; | |
1da177e4 | 2301 | |
f0c76d61 JV |
2302 | slave->link = BOND_LINK_FAIL; |
2303 | slave->delay = bond->params.downdelay; | |
2304 | if (slave->delay) { | |
a4aee5c8 JP |
2305 | pr_info("%s: link status down for %sinterface %s, disabling it in %d ms.\n", |
2306 | bond->dev->name, | |
2307 | (bond->params.mode == | |
2308 | BOND_MODE_ACTIVEBACKUP) ? | |
2309 | ((slave->state == BOND_STATE_ACTIVE) ? | |
2310 | "active " : "backup ") : "", | |
2311 | slave->dev->name, | |
2312 | bond->params.downdelay * bond->params.miimon); | |
1da177e4 | 2313 | } |
f0c76d61 JV |
2314 | /*FALLTHRU*/ |
2315 | case BOND_LINK_FAIL: | |
2316 | if (link_state) { | |
2317 | /* | |
2318 | * recovered before downdelay expired | |
2319 | */ | |
2320 | slave->link = BOND_LINK_UP; | |
1da177e4 | 2321 | slave->jiffies = jiffies; |
a4aee5c8 JP |
2322 | pr_info("%s: link status up again after %d ms for interface %s.\n", |
2323 | bond->dev->name, | |
2324 | (bond->params.downdelay - slave->delay) * | |
2325 | bond->params.miimon, | |
2326 | slave->dev->name); | |
f0c76d61 | 2327 | continue; |
1da177e4 | 2328 | } |
f0c76d61 JV |
2329 | |
2330 | if (slave->delay <= 0) { | |
2331 | slave->new_link = BOND_LINK_DOWN; | |
2332 | commit++; | |
2333 | continue; | |
1da177e4 | 2334 | } |
1da177e4 | 2335 | |
f0c76d61 JV |
2336 | slave->delay--; |
2337 | break; | |
2338 | ||
2339 | case BOND_LINK_DOWN: | |
2340 | if (!link_state) | |
2341 | continue; | |
2342 | ||
2343 | slave->link = BOND_LINK_BACK; | |
2344 | slave->delay = bond->params.updelay; | |
2345 | ||
2346 | if (slave->delay) { | |
a4aee5c8 JP |
2347 | pr_info("%s: link status up for interface %s, enabling it in %d ms.\n", |
2348 | bond->dev->name, slave->dev->name, | |
2349 | ignore_updelay ? 0 : | |
2350 | bond->params.updelay * | |
2351 | bond->params.miimon); | |
f0c76d61 JV |
2352 | } |
2353 | /*FALLTHRU*/ | |
2354 | case BOND_LINK_BACK: | |
2355 | if (!link_state) { | |
2356 | slave->link = BOND_LINK_DOWN; | |
a4aee5c8 JP |
2357 | pr_info("%s: link status down again after %d ms for interface %s.\n", |
2358 | bond->dev->name, | |
2359 | (bond->params.updelay - slave->delay) * | |
2360 | bond->params.miimon, | |
2361 | slave->dev->name); | |
f0c76d61 JV |
2362 | |
2363 | continue; | |
2364 | } | |
2365 | ||
41f89100 JP |
2366 | if (ignore_updelay) |
2367 | slave->delay = 0; | |
2368 | ||
f0c76d61 JV |
2369 | if (slave->delay <= 0) { |
2370 | slave->new_link = BOND_LINK_UP; | |
2371 | commit++; | |
41f89100 | 2372 | ignore_updelay = false; |
f0c76d61 | 2373 | continue; |
1da177e4 | 2374 | } |
f0c76d61 JV |
2375 | |
2376 | slave->delay--; | |
1da177e4 | 2377 | break; |
f0c76d61 JV |
2378 | } |
2379 | } | |
1da177e4 | 2380 | |
f0c76d61 JV |
2381 | return commit; |
2382 | } | |
1da177e4 | 2383 | |
f0c76d61 JV |
2384 | static void bond_miimon_commit(struct bonding *bond) |
2385 | { | |
2386 | struct slave *slave; | |
2387 | int i; | |
2388 | ||
2389 | bond_for_each_slave(bond, slave, i) { | |
2390 | switch (slave->new_link) { | |
2391 | case BOND_LINK_NOCHANGE: | |
2392 | continue; | |
1da177e4 | 2393 | |
f0c76d61 JV |
2394 | case BOND_LINK_UP: |
2395 | slave->link = BOND_LINK_UP; | |
2396 | slave->jiffies = jiffies; | |
2397 | ||
2398 | if (bond->params.mode == BOND_MODE_8023AD) { | |
2399 | /* prevent it from being the active one */ | |
2400 | slave->state = BOND_STATE_BACKUP; | |
2401 | } else if (bond->params.mode != BOND_MODE_ACTIVEBACKUP) { | |
2402 | /* make it immediately active */ | |
2403 | slave->state = BOND_STATE_ACTIVE; | |
2404 | } else if (slave != bond->primary_slave) { | |
2405 | /* prevent it from being the active one */ | |
2406 | slave->state = BOND_STATE_BACKUP; | |
1da177e4 | 2407 | } |
1da177e4 | 2408 | |
546add79 KPO |
2409 | bond_update_speed_duplex(slave); |
2410 | ||
700c2a77 KPO |
2411 | pr_info("%s: link status definitely up for interface %s, %d Mbps %s duplex.\n", |
2412 | bond->dev->name, slave->dev->name, | |
2413 | slave->speed, slave->duplex ? "full" : "half"); | |
1da177e4 | 2414 | |
f0c76d61 JV |
2415 | /* notify ad that the link status has changed */ |
2416 | if (bond->params.mode == BOND_MODE_8023AD) | |
2417 | bond_3ad_handle_link_change(slave, BOND_LINK_UP); | |
059fe7a5 | 2418 | |
58402054 | 2419 | if (bond_is_lb(bond)) |
f0c76d61 JV |
2420 | bond_alb_handle_link_change(bond, slave, |
2421 | BOND_LINK_UP); | |
1da177e4 | 2422 | |
f0c76d61 JV |
2423 | if (!bond->curr_active_slave || |
2424 | (slave == bond->primary_slave)) | |
2425 | goto do_failover; | |
1da177e4 | 2426 | |
f0c76d61 | 2427 | continue; |
059fe7a5 | 2428 | |
f0c76d61 | 2429 | case BOND_LINK_DOWN: |
fba4acda JV |
2430 | if (slave->link_failure_count < UINT_MAX) |
2431 | slave->link_failure_count++; | |
2432 | ||
f0c76d61 | 2433 | slave->link = BOND_LINK_DOWN; |
1da177e4 | 2434 | |
f0c76d61 JV |
2435 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP || |
2436 | bond->params.mode == BOND_MODE_8023AD) | |
2437 | bond_set_slave_inactive_flags(slave); | |
2438 | ||
a4aee5c8 JP |
2439 | pr_info("%s: link status definitely down for interface %s, disabling it\n", |
2440 | bond->dev->name, slave->dev->name); | |
f0c76d61 JV |
2441 | |
2442 | if (bond->params.mode == BOND_MODE_8023AD) | |
2443 | bond_3ad_handle_link_change(slave, | |
2444 | BOND_LINK_DOWN); | |
2445 | ||
ae63e808 | 2446 | if (bond_is_lb(bond)) |
f0c76d61 JV |
2447 | bond_alb_handle_link_change(bond, slave, |
2448 | BOND_LINK_DOWN); | |
2449 | ||
2450 | if (slave == bond->curr_active_slave) | |
2451 | goto do_failover; | |
2452 | ||
2453 | continue; | |
2454 | ||
2455 | default: | |
a4aee5c8 | 2456 | pr_err("%s: invalid new link %d on slave %s\n", |
f0c76d61 JV |
2457 | bond->dev->name, slave->new_link, |
2458 | slave->dev->name); | |
2459 | slave->new_link = BOND_LINK_NOCHANGE; | |
2460 | ||
2461 | continue; | |
2462 | } | |
2463 | ||
2464 | do_failover: | |
2465 | ASSERT_RTNL(); | |
2466 | write_lock_bh(&bond->curr_slave_lock); | |
2467 | bond_select_active_slave(bond); | |
2468 | write_unlock_bh(&bond->curr_slave_lock); | |
2469 | } | |
2470 | ||
2471 | bond_set_carrier(bond); | |
1da177e4 LT |
2472 | } |
2473 | ||
0b0eef66 JV |
2474 | /* |
2475 | * bond_mii_monitor | |
2476 | * | |
2477 | * Really a wrapper that splits the mii monitor into two phases: an | |
f0c76d61 JV |
2478 | * inspection, then (if inspection indicates something needs to be done) |
2479 | * an acquisition of appropriate locks followed by a commit phase to | |
2480 | * implement whatever link state changes are indicated. | |
0b0eef66 JV |
2481 | */ |
2482 | void bond_mii_monitor(struct work_struct *work) | |
2483 | { | |
2484 | struct bonding *bond = container_of(work, struct bonding, | |
2485 | mii_work.work); | |
0b0eef66 JV |
2486 | |
2487 | read_lock(&bond->lock); | |
f0c76d61 JV |
2488 | if (bond->kill_timers) |
2489 | goto out; | |
2490 | ||
2491 | if (bond->slave_cnt == 0) | |
2492 | goto re_arm; | |
b59f9f74 JV |
2493 | |
2494 | if (bond->send_grat_arp) { | |
2495 | read_lock(&bond->curr_slave_lock); | |
2496 | bond_send_gratuitous_arp(bond); | |
2497 | read_unlock(&bond->curr_slave_lock); | |
2498 | } | |
2499 | ||
305d552a BH |
2500 | if (bond->send_unsol_na) { |
2501 | read_lock(&bond->curr_slave_lock); | |
2502 | bond_send_unsolicited_na(bond); | |
2503 | read_unlock(&bond->curr_slave_lock); | |
2504 | } | |
2505 | ||
f0c76d61 | 2506 | if (bond_miimon_inspect(bond)) { |
0b0eef66 JV |
2507 | read_unlock(&bond->lock); |
2508 | rtnl_lock(); | |
2509 | read_lock(&bond->lock); | |
f0c76d61 JV |
2510 | |
2511 | bond_miimon_commit(bond); | |
2512 | ||
5655662d JV |
2513 | read_unlock(&bond->lock); |
2514 | rtnl_unlock(); /* might sleep, hold no other locks */ | |
2515 | read_lock(&bond->lock); | |
0b0eef66 JV |
2516 | } |
2517 | ||
f0c76d61 JV |
2518 | re_arm: |
2519 | if (bond->params.miimon) | |
2520 | queue_delayed_work(bond->wq, &bond->mii_work, | |
2521 | msecs_to_jiffies(bond->params.miimon)); | |
2522 | out: | |
0b0eef66 | 2523 | read_unlock(&bond->lock); |
0b0eef66 | 2524 | } |
c3ade5ca | 2525 | |
d3bb52b0 | 2526 | static __be32 bond_glean_dev_ip(struct net_device *dev) |
c3ade5ca JV |
2527 | { |
2528 | struct in_device *idev; | |
2529 | struct in_ifaddr *ifa; | |
a144ea4b | 2530 | __be32 addr = 0; |
c3ade5ca JV |
2531 | |
2532 | if (!dev) | |
2533 | return 0; | |
2534 | ||
2535 | rcu_read_lock(); | |
e5ed6399 | 2536 | idev = __in_dev_get_rcu(dev); |
c3ade5ca JV |
2537 | if (!idev) |
2538 | goto out; | |
2539 | ||
2540 | ifa = idev->ifa_list; | |
2541 | if (!ifa) | |
2542 | goto out; | |
2543 | ||
2544 | addr = ifa->ifa_local; | |
2545 | out: | |
2546 | rcu_read_unlock(); | |
2547 | return addr; | |
2548 | } | |
2549 | ||
d3bb52b0 | 2550 | static int bond_has_this_ip(struct bonding *bond, __be32 ip) |
f5b2b966 | 2551 | { |
0883beca | 2552 | struct vlan_entry *vlan; |
f5b2b966 JV |
2553 | |
2554 | if (ip == bond->master_ip) | |
2555 | return 1; | |
2556 | ||
0883beca | 2557 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
f5b2b966 JV |
2558 | if (ip == vlan->vlan_ip) |
2559 | return 1; | |
2560 | } | |
2561 | ||
2562 | return 0; | |
2563 | } | |
2564 | ||
c3ade5ca JV |
2565 | /* |
2566 | * We go to the (large) trouble of VLAN tagging ARP frames because | |
2567 | * switches in VLAN mode (especially if ports are configured as | |
2568 | * "native" to a VLAN) might not pass non-tagged frames. | |
2569 | */ | |
d3bb52b0 | 2570 | 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 |
2571 | { |
2572 | struct sk_buff *skb; | |
2573 | ||
5a03cdb7 | 2574 | pr_debug("arp %d on slave %s: dst %x src %x vid %d\n", arp_op, |
a4aee5c8 | 2575 | slave_dev->name, dest_ip, src_ip, vlan_id); |
3d632c3f | 2576 | |
c3ade5ca JV |
2577 | skb = arp_create(arp_op, ETH_P_ARP, dest_ip, slave_dev, src_ip, |
2578 | NULL, slave_dev->dev_addr, NULL); | |
2579 | ||
2580 | if (!skb) { | |
a4aee5c8 | 2581 | pr_err("ARP packet allocation failed\n"); |
c3ade5ca JV |
2582 | return; |
2583 | } | |
2584 | if (vlan_id) { | |
2585 | skb = vlan_put_tag(skb, vlan_id); | |
2586 | if (!skb) { | |
a4aee5c8 | 2587 | pr_err("failed to insert VLAN tag\n"); |
c3ade5ca JV |
2588 | return; |
2589 | } | |
2590 | } | |
2591 | arp_xmit(skb); | |
2592 | } | |
2593 | ||
2594 | ||
1da177e4 LT |
2595 | static void bond_arp_send_all(struct bonding *bond, struct slave *slave) |
2596 | { | |
c3ade5ca | 2597 | int i, vlan_id, rv; |
d3bb52b0 | 2598 | __be32 *targets = bond->params.arp_targets; |
0883beca | 2599 | struct vlan_entry *vlan; |
c3ade5ca JV |
2600 | struct net_device *vlan_dev; |
2601 | struct flowi fl; | |
2602 | struct rtable *rt; | |
1da177e4 | 2603 | |
6b780567 MW |
2604 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
2605 | if (!targets[i]) | |
5a31bec0 | 2606 | break; |
5a03cdb7 | 2607 | pr_debug("basa: target %x\n", targets[i]); |
f35188fa | 2608 | if (!bond->vlgrp) { |
5a03cdb7 | 2609 | pr_debug("basa: empty vlan: arp_send\n"); |
c3ade5ca JV |
2610 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2611 | bond->master_ip, 0); | |
2612 | continue; | |
2613 | } | |
2614 | ||
2615 | /* | |
2616 | * If VLANs are configured, we do a route lookup to | |
2617 | * determine which VLAN interface would be used, so we | |
2618 | * can tag the ARP with the proper VLAN tag. | |
2619 | */ | |
2620 | memset(&fl, 0, sizeof(fl)); | |
2621 | fl.fl4_dst = targets[i]; | |
2622 | fl.fl4_tos = RTO_ONLINK; | |
2623 | ||
ec87fd3b | 2624 | rv = ip_route_output_key(dev_net(bond->dev), &rt, &fl); |
c3ade5ca JV |
2625 | if (rv) { |
2626 | if (net_ratelimit()) { | |
a4aee5c8 JP |
2627 | pr_warning("%s: no route to arp_ip_target %pI4\n", |
2628 | bond->dev->name, &fl.fl4_dst); | |
c3ade5ca JV |
2629 | } |
2630 | continue; | |
2631 | } | |
2632 | ||
2633 | /* | |
2634 | * This target is not on a VLAN | |
2635 | */ | |
d8d1f30b | 2636 | if (rt->dst.dev == bond->dev) { |
ed4b9f80 | 2637 | ip_rt_put(rt); |
5a03cdb7 | 2638 | pr_debug("basa: rtdev == bond->dev: arp_send\n"); |
c3ade5ca JV |
2639 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2640 | bond->master_ip, 0); | |
2641 | continue; | |
2642 | } | |
2643 | ||
2644 | vlan_id = 0; | |
0883beca | 2645 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
5c15bdec | 2646 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
d8d1f30b | 2647 | if (vlan_dev == rt->dst.dev) { |
c3ade5ca | 2648 | vlan_id = vlan->vlan_id; |
5a03cdb7 | 2649 | pr_debug("basa: vlan match on %s %d\n", |
c3ade5ca JV |
2650 | vlan_dev->name, vlan_id); |
2651 | break; | |
2652 | } | |
2653 | } | |
2654 | ||
2655 | if (vlan_id) { | |
ed4b9f80 | 2656 | ip_rt_put(rt); |
c3ade5ca JV |
2657 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
2658 | vlan->vlan_ip, vlan_id); | |
2659 | continue; | |
2660 | } | |
2661 | ||
2662 | if (net_ratelimit()) { | |
a4aee5c8 JP |
2663 | pr_warning("%s: no path to arp_ip_target %pI4 via rt.dev %s\n", |
2664 | bond->dev->name, &fl.fl4_dst, | |
d8d1f30b | 2665 | rt->dst.dev ? rt->dst.dev->name : "NULL"); |
c3ade5ca | 2666 | } |
ed4b9f80 | 2667 | ip_rt_put(rt); |
c3ade5ca JV |
2668 | } |
2669 | } | |
2670 | ||
2671 | /* | |
2672 | * Kick out a gratuitous ARP for an IP on the bonding master plus one | |
2673 | * for each VLAN above us. | |
b59f9f74 JV |
2674 | * |
2675 | * Caller must hold curr_slave_lock for read or better | |
c3ade5ca JV |
2676 | */ |
2677 | static void bond_send_gratuitous_arp(struct bonding *bond) | |
2678 | { | |
2679 | struct slave *slave = bond->curr_active_slave; | |
2680 | struct vlan_entry *vlan; | |
2681 | struct net_device *vlan_dev; | |
2682 | ||
a4aee5c8 JP |
2683 | pr_debug("bond_send_grat_arp: bond %s slave %s\n", |
2684 | bond->dev->name, slave ? slave->dev->name : "NULL"); | |
b59f9f74 JV |
2685 | |
2686 | if (!slave || !bond->send_grat_arp || | |
2687 | test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state)) | |
c3ade5ca JV |
2688 | return; |
2689 | ||
b59f9f74 JV |
2690 | bond->send_grat_arp--; |
2691 | ||
c3ade5ca JV |
2692 | if (bond->master_ip) { |
2693 | bond_arp_send(slave->dev, ARPOP_REPLY, bond->master_ip, | |
1053f62c | 2694 | bond->master_ip, 0); |
c3ade5ca JV |
2695 | } |
2696 | ||
f35188fa JV |
2697 | if (!bond->vlgrp) |
2698 | return; | |
2699 | ||
c3ade5ca | 2700 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
5c15bdec | 2701 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
2702 | if (vlan->vlan_ip) { |
2703 | bond_arp_send(slave->dev, ARPOP_REPLY, vlan->vlan_ip, | |
2704 | vlan->vlan_ip, vlan->vlan_id); | |
2705 | } | |
1da177e4 LT |
2706 | } |
2707 | } | |
2708 | ||
d3bb52b0 | 2709 | static void bond_validate_arp(struct bonding *bond, struct slave *slave, __be32 sip, __be32 tip) |
f5b2b966 JV |
2710 | { |
2711 | int i; | |
d3bb52b0 | 2712 | __be32 *targets = bond->params.arp_targets; |
f5b2b966 | 2713 | |
f5b2b966 | 2714 | for (i = 0; (i < BOND_MAX_ARP_TARGETS) && targets[i]; i++) { |
5a03cdb7 | 2715 | pr_debug("bva: sip %pI4 tip %pI4 t[%d] %pI4 bhti(tip) %d\n", |
a4aee5c8 JP |
2716 | &sip, &tip, i, &targets[i], |
2717 | bond_has_this_ip(bond, tip)); | |
f5b2b966 JV |
2718 | if (sip == targets[i]) { |
2719 | if (bond_has_this_ip(bond, tip)) | |
2720 | slave->last_arp_rx = jiffies; | |
2721 | return; | |
2722 | } | |
2723 | } | |
2724 | } | |
2725 | ||
2726 | static int bond_arp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev) | |
2727 | { | |
2728 | struct arphdr *arp; | |
2729 | struct slave *slave; | |
2730 | struct bonding *bond; | |
2731 | unsigned char *arp_ptr; | |
d3bb52b0 | 2732 | __be32 sip, tip; |
f5b2b966 | 2733 | |
1f3c8804 AG |
2734 | if (dev->priv_flags & IFF_802_1Q_VLAN) { |
2735 | /* | |
2736 | * When using VLANS and bonding, dev and oriv_dev may be | |
2737 | * incorrect if the physical interface supports VLAN | |
2738 | * acceleration. With this change ARP validation now | |
2739 | * works for hosts only reachable on the VLAN interface. | |
2740 | */ | |
2741 | dev = vlan_dev_real_dev(dev); | |
2742 | orig_dev = dev_get_by_index_rcu(dev_net(skb->dev),skb->skb_iif); | |
2743 | } | |
2744 | ||
f5b2b966 JV |
2745 | if (!(dev->priv_flags & IFF_BONDING) || !(dev->flags & IFF_MASTER)) |
2746 | goto out; | |
2747 | ||
454d7c9b | 2748 | bond = netdev_priv(dev); |
f5b2b966 JV |
2749 | read_lock(&bond->lock); |
2750 | ||
5a03cdb7 | 2751 | pr_debug("bond_arp_rcv: bond %s skb->dev %s orig_dev %s\n", |
a4aee5c8 JP |
2752 | bond->dev->name, skb->dev ? skb->dev->name : "NULL", |
2753 | orig_dev ? orig_dev->name : "NULL"); | |
f5b2b966 JV |
2754 | |
2755 | slave = bond_get_slave_by_dev(bond, orig_dev); | |
2756 | if (!slave || !slave_do_arp_validate(bond, slave)) | |
2757 | goto out_unlock; | |
2758 | ||
988b7050 | 2759 | if (!pskb_may_pull(skb, arp_hdr_len(dev))) |
f5b2b966 JV |
2760 | goto out_unlock; |
2761 | ||
d0a92be0 | 2762 | arp = arp_hdr(skb); |
f5b2b966 JV |
2763 | if (arp->ar_hln != dev->addr_len || |
2764 | skb->pkt_type == PACKET_OTHERHOST || | |
2765 | skb->pkt_type == PACKET_LOOPBACK || | |
2766 | arp->ar_hrd != htons(ARPHRD_ETHER) || | |
2767 | arp->ar_pro != htons(ETH_P_IP) || | |
2768 | arp->ar_pln != 4) | |
2769 | goto out_unlock; | |
2770 | ||
2771 | arp_ptr = (unsigned char *)(arp + 1); | |
2772 | arp_ptr += dev->addr_len; | |
2773 | memcpy(&sip, arp_ptr, 4); | |
2774 | arp_ptr += 4 + dev->addr_len; | |
2775 | memcpy(&tip, arp_ptr, 4); | |
2776 | ||
5a03cdb7 | 2777 | pr_debug("bond_arp_rcv: %s %s/%d av %d sv %d sip %pI4 tip %pI4\n", |
a4aee5c8 JP |
2778 | bond->dev->name, slave->dev->name, slave->state, |
2779 | bond->params.arp_validate, slave_do_arp_validate(bond, slave), | |
2780 | &sip, &tip); | |
f5b2b966 JV |
2781 | |
2782 | /* | |
2783 | * Backup slaves won't see the ARP reply, but do come through | |
2784 | * here for each ARP probe (so we swap the sip/tip to validate | |
2785 | * the probe). In a "redundant switch, common router" type of | |
2786 | * configuration, the ARP probe will (hopefully) travel from | |
2787 | * the active, through one switch, the router, then the other | |
2788 | * switch before reaching the backup. | |
2789 | */ | |
2790 | if (slave->state == BOND_STATE_ACTIVE) | |
2791 | bond_validate_arp(bond, slave, sip, tip); | |
2792 | else | |
2793 | bond_validate_arp(bond, slave, tip, sip); | |
2794 | ||
2795 | out_unlock: | |
2796 | read_unlock(&bond->lock); | |
2797 | out: | |
2798 | dev_kfree_skb(skb); | |
2799 | return NET_RX_SUCCESS; | |
2800 | } | |
2801 | ||
1da177e4 LT |
2802 | /* |
2803 | * this function is called regularly to monitor each slave's link | |
2804 | * ensuring that traffic is being sent and received when arp monitoring | |
2805 | * is used in load-balancing mode. if the adapter has been dormant, then an | |
2806 | * arp is transmitted to generate traffic. see activebackup_arp_monitor for | |
2807 | * arp monitoring in active backup mode. | |
2808 | */ | |
1b76b316 | 2809 | void bond_loadbalance_arp_mon(struct work_struct *work) |
1da177e4 | 2810 | { |
1b76b316 JV |
2811 | struct bonding *bond = container_of(work, struct bonding, |
2812 | arp_work.work); | |
1da177e4 LT |
2813 | struct slave *slave, *oldcurrent; |
2814 | int do_failover = 0; | |
2815 | int delta_in_ticks; | |
2816 | int i; | |
2817 | ||
2818 | read_lock(&bond->lock); | |
2819 | ||
5ce0da8f | 2820 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
1da177e4 | 2821 | |
3d632c3f | 2822 | if (bond->kill_timers) |
1da177e4 | 2823 | goto out; |
1da177e4 | 2824 | |
3d632c3f | 2825 | if (bond->slave_cnt == 0) |
1da177e4 | 2826 | goto re_arm; |
1da177e4 LT |
2827 | |
2828 | read_lock(&bond->curr_slave_lock); | |
2829 | oldcurrent = bond->curr_active_slave; | |
2830 | read_unlock(&bond->curr_slave_lock); | |
2831 | ||
2832 | /* see if any of the previous devices are up now (i.e. they have | |
2833 | * xmt and rcv traffic). the curr_active_slave does not come into | |
2834 | * the picture unless it is null. also, slave->jiffies is not needed | |
2835 | * here because we send an arp on each slave and give a slave as | |
2836 | * long as it needs to get the tx/rx within the delta. | |
2837 | * TODO: what about up/down delay in arp mode? it wasn't here before | |
2838 | * so it can wait | |
2839 | */ | |
2840 | bond_for_each_slave(bond, slave, i) { | |
cb32f2a0 JB |
2841 | unsigned long trans_start = dev_trans_start(slave->dev); |
2842 | ||
1da177e4 | 2843 | if (slave->link != BOND_LINK_UP) { |
cb32f2a0 JB |
2844 | if (time_in_range(jiffies, |
2845 | trans_start - delta_in_ticks, | |
2846 | trans_start + delta_in_ticks) && | |
2847 | time_in_range(jiffies, | |
2848 | slave->dev->last_rx - delta_in_ticks, | |
2849 | slave->dev->last_rx + delta_in_ticks)) { | |
1da177e4 LT |
2850 | |
2851 | slave->link = BOND_LINK_UP; | |
2852 | slave->state = BOND_STATE_ACTIVE; | |
2853 | ||
2854 | /* primary_slave has no meaning in round-robin | |
2855 | * mode. the window of a slave being up and | |
2856 | * curr_active_slave being null after enslaving | |
2857 | * is closed. | |
2858 | */ | |
2859 | if (!oldcurrent) { | |
a4aee5c8 JP |
2860 | pr_info("%s: link status definitely up for interface %s, ", |
2861 | bond->dev->name, | |
2862 | slave->dev->name); | |
1da177e4 LT |
2863 | do_failover = 1; |
2864 | } else { | |
a4aee5c8 JP |
2865 | pr_info("%s: interface %s is now up\n", |
2866 | bond->dev->name, | |
2867 | slave->dev->name); | |
1da177e4 LT |
2868 | } |
2869 | } | |
2870 | } else { | |
2871 | /* slave->link == BOND_LINK_UP */ | |
2872 | ||
2873 | /* not all switches will respond to an arp request | |
2874 | * when the source ip is 0, so don't take the link down | |
2875 | * if we don't know our ip yet | |
2876 | */ | |
cb32f2a0 JB |
2877 | if (!time_in_range(jiffies, |
2878 | trans_start - delta_in_ticks, | |
2879 | trans_start + 2 * delta_in_ticks) || | |
2880 | !time_in_range(jiffies, | |
2881 | slave->dev->last_rx - delta_in_ticks, | |
2882 | slave->dev->last_rx + 2 * delta_in_ticks)) { | |
1da177e4 LT |
2883 | |
2884 | slave->link = BOND_LINK_DOWN; | |
2885 | slave->state = BOND_STATE_BACKUP; | |
2886 | ||
3d632c3f | 2887 | if (slave->link_failure_count < UINT_MAX) |
1da177e4 | 2888 | slave->link_failure_count++; |
1da177e4 | 2889 | |
a4aee5c8 JP |
2890 | pr_info("%s: interface %s is now down.\n", |
2891 | bond->dev->name, | |
2892 | slave->dev->name); | |
1da177e4 | 2893 | |
3d632c3f | 2894 | if (slave == oldcurrent) |
1da177e4 | 2895 | do_failover = 1; |
1da177e4 LT |
2896 | } |
2897 | } | |
2898 | ||
2899 | /* note: if switch is in round-robin mode, all links | |
2900 | * must tx arp to ensure all links rx an arp - otherwise | |
2901 | * links may oscillate or not come up at all; if switch is | |
2902 | * in something like xor mode, there is nothing we can | |
2903 | * do - all replies will be rx'ed on same link causing slaves | |
2904 | * to be unstable during low/no traffic periods | |
2905 | */ | |
3d632c3f | 2906 | if (IS_UP(slave->dev)) |
1da177e4 | 2907 | bond_arp_send_all(bond, slave); |
1da177e4 LT |
2908 | } |
2909 | ||
2910 | if (do_failover) { | |
059fe7a5 | 2911 | write_lock_bh(&bond->curr_slave_lock); |
1da177e4 LT |
2912 | |
2913 | bond_select_active_slave(bond); | |
2914 | ||
059fe7a5 | 2915 | write_unlock_bh(&bond->curr_slave_lock); |
1da177e4 LT |
2916 | } |
2917 | ||
2918 | re_arm: | |
1b76b316 JV |
2919 | if (bond->params.arp_interval) |
2920 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); | |
1da177e4 LT |
2921 | out: |
2922 | read_unlock(&bond->lock); | |
2923 | } | |
2924 | ||
2925 | /* | |
b2220cad JV |
2926 | * Called to inspect slaves for active-backup mode ARP monitor link state |
2927 | * changes. Sets new_link in slaves to specify what action should take | |
2928 | * place for the slave. Returns 0 if no changes are found, >0 if changes | |
2929 | * to link states must be committed. | |
2930 | * | |
2931 | * Called with bond->lock held for read. | |
1da177e4 | 2932 | */ |
b2220cad | 2933 | static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks) |
1da177e4 | 2934 | { |
1da177e4 | 2935 | struct slave *slave; |
b2220cad | 2936 | int i, commit = 0; |
cb32f2a0 | 2937 | unsigned long trans_start; |
1da177e4 | 2938 | |
b2220cad JV |
2939 | bond_for_each_slave(bond, slave, i) { |
2940 | slave->new_link = BOND_LINK_NOCHANGE; | |
1da177e4 | 2941 | |
b2220cad | 2942 | if (slave->link != BOND_LINK_UP) { |
cb32f2a0 JB |
2943 | if (time_in_range(jiffies, |
2944 | slave_last_rx(bond, slave) - delta_in_ticks, | |
2945 | slave_last_rx(bond, slave) + delta_in_ticks)) { | |
2946 | ||
b2220cad JV |
2947 | slave->new_link = BOND_LINK_UP; |
2948 | commit++; | |
2949 | } | |
1da177e4 | 2950 | |
b2220cad JV |
2951 | continue; |
2952 | } | |
1da177e4 | 2953 | |
b2220cad JV |
2954 | /* |
2955 | * Give slaves 2*delta after being enslaved or made | |
2956 | * active. This avoids bouncing, as the last receive | |
2957 | * times need a full ARP monitor cycle to be updated. | |
2958 | */ | |
cb32f2a0 JB |
2959 | if (time_in_range(jiffies, |
2960 | slave->jiffies - delta_in_ticks, | |
2961 | slave->jiffies + 2 * delta_in_ticks)) | |
b2220cad JV |
2962 | continue; |
2963 | ||
2964 | /* | |
2965 | * Backup slave is down if: | |
2966 | * - No current_arp_slave AND | |
2967 | * - more than 3*delta since last receive AND | |
2968 | * - the bond has an IP address | |
2969 | * | |
2970 | * Note: a non-null current_arp_slave indicates | |
2971 | * the curr_active_slave went down and we are | |
2972 | * searching for a new one; under this condition | |
2973 | * we only take the curr_active_slave down - this | |
2974 | * gives each slave a chance to tx/rx traffic | |
2975 | * before being taken out | |
2976 | */ | |
2977 | if (slave->state == BOND_STATE_BACKUP && | |
2978 | !bond->current_arp_slave && | |
cb32f2a0 JB |
2979 | !time_in_range(jiffies, |
2980 | slave_last_rx(bond, slave) - delta_in_ticks, | |
2981 | slave_last_rx(bond, slave) + 3 * delta_in_ticks)) { | |
2982 | ||
b2220cad JV |
2983 | slave->new_link = BOND_LINK_DOWN; |
2984 | commit++; | |
2985 | } | |
2986 | ||
2987 | /* | |
2988 | * Active slave is down if: | |
2989 | * - more than 2*delta since transmitting OR | |
2990 | * - (more than 2*delta since receive AND | |
2991 | * the bond has an IP address) | |
2992 | */ | |
cb32f2a0 | 2993 | trans_start = dev_trans_start(slave->dev); |
b2220cad | 2994 | if ((slave->state == BOND_STATE_ACTIVE) && |
cb32f2a0 JB |
2995 | (!time_in_range(jiffies, |
2996 | trans_start - delta_in_ticks, | |
2997 | trans_start + 2 * delta_in_ticks) || | |
2998 | !time_in_range(jiffies, | |
2999 | slave_last_rx(bond, slave) - delta_in_ticks, | |
3000 | slave_last_rx(bond, slave) + 2 * delta_in_ticks))) { | |
3001 | ||
b2220cad JV |
3002 | slave->new_link = BOND_LINK_DOWN; |
3003 | commit++; | |
3004 | } | |
1da177e4 LT |
3005 | } |
3006 | ||
b2220cad JV |
3007 | return commit; |
3008 | } | |
1da177e4 | 3009 | |
b2220cad JV |
3010 | /* |
3011 | * Called to commit link state changes noted by inspection step of | |
3012 | * active-backup mode ARP monitor. | |
3013 | * | |
3014 | * Called with RTNL and bond->lock for read. | |
3015 | */ | |
3016 | static void bond_ab_arp_commit(struct bonding *bond, int delta_in_ticks) | |
3017 | { | |
3018 | struct slave *slave; | |
3019 | int i; | |
cb32f2a0 | 3020 | unsigned long trans_start; |
1da177e4 | 3021 | |
b2220cad JV |
3022 | bond_for_each_slave(bond, slave, i) { |
3023 | switch (slave->new_link) { | |
3024 | case BOND_LINK_NOCHANGE: | |
3025 | continue; | |
ff59c456 | 3026 | |
b2220cad | 3027 | case BOND_LINK_UP: |
cb32f2a0 | 3028 | trans_start = dev_trans_start(slave->dev); |
b9f60253 | 3029 | if ((!bond->curr_active_slave && |
cb32f2a0 JB |
3030 | time_in_range(jiffies, |
3031 | trans_start - delta_in_ticks, | |
3032 | trans_start + delta_in_ticks)) || | |
b9f60253 | 3033 | bond->curr_active_slave != slave) { |
b2220cad | 3034 | slave->link = BOND_LINK_UP; |
b2220cad JV |
3035 | bond->current_arp_slave = NULL; |
3036 | ||
a4aee5c8 | 3037 | pr_info("%s: link status definitely up for interface %s.\n", |
b9f60253 | 3038 | bond->dev->name, slave->dev->name); |
b2220cad | 3039 | |
b9f60253 JP |
3040 | if (!bond->curr_active_slave || |
3041 | (slave == bond->primary_slave)) | |
3042 | goto do_failover; | |
1da177e4 | 3043 | |
b9f60253 | 3044 | } |
1da177e4 | 3045 | |
b9f60253 | 3046 | continue; |
1da177e4 | 3047 | |
b2220cad JV |
3048 | case BOND_LINK_DOWN: |
3049 | if (slave->link_failure_count < UINT_MAX) | |
3050 | slave->link_failure_count++; | |
3051 | ||
3052 | slave->link = BOND_LINK_DOWN; | |
b9f60253 | 3053 | bond_set_slave_inactive_flags(slave); |
b2220cad | 3054 | |
a4aee5c8 | 3055 | pr_info("%s: link status definitely down for interface %s, disabling it\n", |
b9f60253 | 3056 | bond->dev->name, slave->dev->name); |
b2220cad | 3057 | |
b9f60253 | 3058 | if (slave == bond->curr_active_slave) { |
b2220cad | 3059 | bond->current_arp_slave = NULL; |
b9f60253 | 3060 | goto do_failover; |
1da177e4 | 3061 | } |
b9f60253 JP |
3062 | |
3063 | continue; | |
b2220cad JV |
3064 | |
3065 | default: | |
a4aee5c8 | 3066 | pr_err("%s: impossible: new_link %d on slave %s\n", |
b2220cad JV |
3067 | bond->dev->name, slave->new_link, |
3068 | slave->dev->name); | |
b9f60253 | 3069 | continue; |
1da177e4 | 3070 | } |
1da177e4 | 3071 | |
b9f60253 JP |
3072 | do_failover: |
3073 | ASSERT_RTNL(); | |
b2220cad | 3074 | write_lock_bh(&bond->curr_slave_lock); |
b9f60253 | 3075 | bond_select_active_slave(bond); |
b2220cad JV |
3076 | write_unlock_bh(&bond->curr_slave_lock); |
3077 | } | |
1da177e4 | 3078 | |
b2220cad JV |
3079 | bond_set_carrier(bond); |
3080 | } | |
1da177e4 | 3081 | |
b2220cad JV |
3082 | /* |
3083 | * Send ARP probes for active-backup mode ARP monitor. | |
3084 | * | |
3085 | * Called with bond->lock held for read. | |
3086 | */ | |
3087 | static void bond_ab_arp_probe(struct bonding *bond) | |
3088 | { | |
3089 | struct slave *slave; | |
3090 | int i; | |
1da177e4 | 3091 | |
b2220cad | 3092 | read_lock(&bond->curr_slave_lock); |
1da177e4 | 3093 | |
b2220cad | 3094 | if (bond->current_arp_slave && bond->curr_active_slave) |
a4aee5c8 JP |
3095 | pr_info("PROBE: c_arp %s && cas %s BAD\n", |
3096 | bond->current_arp_slave->dev->name, | |
3097 | bond->curr_active_slave->dev->name); | |
1da177e4 | 3098 | |
b2220cad JV |
3099 | if (bond->curr_active_slave) { |
3100 | bond_arp_send_all(bond, bond->curr_active_slave); | |
3101 | read_unlock(&bond->curr_slave_lock); | |
3102 | return; | |
3103 | } | |
1da177e4 | 3104 | |
b2220cad | 3105 | read_unlock(&bond->curr_slave_lock); |
059fe7a5 | 3106 | |
b2220cad JV |
3107 | /* if we don't have a curr_active_slave, search for the next available |
3108 | * backup slave from the current_arp_slave and make it the candidate | |
3109 | * for becoming the curr_active_slave | |
3110 | */ | |
1da177e4 | 3111 | |
b2220cad JV |
3112 | if (!bond->current_arp_slave) { |
3113 | bond->current_arp_slave = bond->first_slave; | |
3114 | if (!bond->current_arp_slave) | |
3115 | return; | |
3116 | } | |
1da177e4 | 3117 | |
b2220cad | 3118 | bond_set_slave_inactive_flags(bond->current_arp_slave); |
059fe7a5 | 3119 | |
b2220cad JV |
3120 | /* search for next candidate */ |
3121 | bond_for_each_slave_from(bond, slave, i, bond->current_arp_slave->next) { | |
3122 | if (IS_UP(slave->dev)) { | |
3123 | slave->link = BOND_LINK_BACK; | |
3124 | bond_set_slave_active_flags(slave); | |
3125 | bond_arp_send_all(bond, slave); | |
1da177e4 | 3126 | slave->jiffies = jiffies; |
b2220cad JV |
3127 | bond->current_arp_slave = slave; |
3128 | break; | |
1da177e4 LT |
3129 | } |
3130 | ||
b2220cad JV |
3131 | /* if the link state is up at this point, we |
3132 | * mark it down - this can happen if we have | |
3133 | * simultaneous link failures and | |
3134 | * reselect_active_interface doesn't make this | |
3135 | * one the current slave so it is still marked | |
3136 | * up when it is actually down | |
1da177e4 | 3137 | */ |
b2220cad JV |
3138 | if (slave->link == BOND_LINK_UP) { |
3139 | slave->link = BOND_LINK_DOWN; | |
3140 | if (slave->link_failure_count < UINT_MAX) | |
3141 | slave->link_failure_count++; | |
1da177e4 | 3142 | |
b2220cad JV |
3143 | bond_set_slave_inactive_flags(slave); |
3144 | ||
a4aee5c8 JP |
3145 | pr_info("%s: backup interface %s is now down.\n", |
3146 | bond->dev->name, slave->dev->name); | |
1da177e4 | 3147 | } |
b2220cad JV |
3148 | } |
3149 | } | |
1da177e4 | 3150 | |
b2220cad JV |
3151 | void bond_activebackup_arp_mon(struct work_struct *work) |
3152 | { | |
3153 | struct bonding *bond = container_of(work, struct bonding, | |
3154 | arp_work.work); | |
3155 | int delta_in_ticks; | |
1da177e4 | 3156 | |
b2220cad | 3157 | read_lock(&bond->lock); |
1da177e4 | 3158 | |
b2220cad JV |
3159 | if (bond->kill_timers) |
3160 | goto out; | |
1da177e4 | 3161 | |
b2220cad | 3162 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
1da177e4 | 3163 | |
b2220cad JV |
3164 | if (bond->slave_cnt == 0) |
3165 | goto re_arm; | |
3166 | ||
b59f9f74 JV |
3167 | if (bond->send_grat_arp) { |
3168 | read_lock(&bond->curr_slave_lock); | |
3169 | bond_send_gratuitous_arp(bond); | |
3170 | read_unlock(&bond->curr_slave_lock); | |
3171 | } | |
3172 | ||
305d552a BH |
3173 | if (bond->send_unsol_na) { |
3174 | read_lock(&bond->curr_slave_lock); | |
3175 | bond_send_unsolicited_na(bond); | |
3176 | read_unlock(&bond->curr_slave_lock); | |
3177 | } | |
3178 | ||
b2220cad JV |
3179 | if (bond_ab_arp_inspect(bond, delta_in_ticks)) { |
3180 | read_unlock(&bond->lock); | |
3181 | rtnl_lock(); | |
3182 | read_lock(&bond->lock); | |
3183 | ||
3184 | bond_ab_arp_commit(bond, delta_in_ticks); | |
3185 | ||
3186 | read_unlock(&bond->lock); | |
3187 | rtnl_unlock(); | |
3188 | read_lock(&bond->lock); | |
1da177e4 LT |
3189 | } |
3190 | ||
b2220cad JV |
3191 | bond_ab_arp_probe(bond); |
3192 | ||
1da177e4 | 3193 | re_arm: |
3d632c3f | 3194 | if (bond->params.arp_interval) |
1b76b316 | 3195 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); |
1da177e4 LT |
3196 | out: |
3197 | read_unlock(&bond->lock); | |
3198 | } | |
3199 | ||
3200 | /*------------------------------ proc/seq_file-------------------------------*/ | |
3201 | ||
3202 | #ifdef CONFIG_PROC_FS | |
3203 | ||
1da177e4 | 3204 | static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos) |
1f78d9f9 HE |
3205 | __acquires(&dev_base_lock) |
3206 | __acquires(&bond->lock) | |
1da177e4 LT |
3207 | { |
3208 | struct bonding *bond = seq->private; | |
3209 | loff_t off = 0; | |
3210 | struct slave *slave; | |
3211 | int i; | |
3212 | ||
3213 | /* make sure the bond won't be taken away */ | |
3214 | read_lock(&dev_base_lock); | |
6603a6f2 | 3215 | read_lock(&bond->lock); |
1da177e4 | 3216 | |
3d632c3f | 3217 | if (*pos == 0) |
1da177e4 | 3218 | return SEQ_START_TOKEN; |
1da177e4 LT |
3219 | |
3220 | bond_for_each_slave(bond, slave, i) { | |
3d632c3f | 3221 | if (++off == *pos) |
1da177e4 | 3222 | return slave; |
1da177e4 LT |
3223 | } |
3224 | ||
3225 | return NULL; | |
3226 | } | |
3227 | ||
3228 | static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
3229 | { | |
3230 | struct bonding *bond = seq->private; | |
3231 | struct slave *slave = v; | |
3232 | ||
3233 | ++*pos; | |
3d632c3f | 3234 | if (v == SEQ_START_TOKEN) |
1da177e4 | 3235 | return bond->first_slave; |
1da177e4 LT |
3236 | |
3237 | slave = slave->next; | |
3238 | ||
3239 | return (slave == bond->first_slave) ? NULL : slave; | |
3240 | } | |
3241 | ||
3242 | static void bond_info_seq_stop(struct seq_file *seq, void *v) | |
1f78d9f9 HE |
3243 | __releases(&bond->lock) |
3244 | __releases(&dev_base_lock) | |
1da177e4 LT |
3245 | { |
3246 | struct bonding *bond = seq->private; | |
3247 | ||
6603a6f2 | 3248 | read_unlock(&bond->lock); |
1da177e4 LT |
3249 | read_unlock(&dev_base_lock); |
3250 | } | |
3251 | ||
3252 | static void bond_info_show_master(struct seq_file *seq) | |
3253 | { | |
3254 | struct bonding *bond = seq->private; | |
3255 | struct slave *curr; | |
4756b02f | 3256 | int i; |
1da177e4 LT |
3257 | |
3258 | read_lock(&bond->curr_slave_lock); | |
3259 | curr = bond->curr_active_slave; | |
3260 | read_unlock(&bond->curr_slave_lock); | |
3261 | ||
dd957c57 | 3262 | seq_printf(seq, "Bonding Mode: %s", |
1da177e4 LT |
3263 | bond_mode_name(bond->params.mode)); |
3264 | ||
dd957c57 JV |
3265 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP && |
3266 | bond->params.fail_over_mac) | |
3915c1e8 JV |
3267 | seq_printf(seq, " (fail_over_mac %s)", |
3268 | fail_over_mac_tbl[bond->params.fail_over_mac].modename); | |
dd957c57 JV |
3269 | |
3270 | seq_printf(seq, "\n"); | |
3271 | ||
c61b75ad MW |
3272 | if (bond->params.mode == BOND_MODE_XOR || |
3273 | bond->params.mode == BOND_MODE_8023AD) { | |
3274 | seq_printf(seq, "Transmit Hash Policy: %s (%d)\n", | |
3275 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, | |
3276 | bond->params.xmit_policy); | |
3277 | } | |
3278 | ||
1da177e4 | 3279 | if (USES_PRIMARY(bond->params.mode)) { |
a549952a | 3280 | seq_printf(seq, "Primary Slave: %s", |
0f418b2a MW |
3281 | (bond->primary_slave) ? |
3282 | bond->primary_slave->dev->name : "None"); | |
a549952a JP |
3283 | if (bond->primary_slave) |
3284 | seq_printf(seq, " (primary_reselect %s)", | |
3285 | pri_reselect_tbl[bond->params.primary_reselect].modename); | |
1da177e4 | 3286 | |
a549952a | 3287 | seq_printf(seq, "\nCurrently Active Slave: %s\n", |
1da177e4 LT |
3288 | (curr) ? curr->dev->name : "None"); |
3289 | } | |
3290 | ||
ff59c456 JV |
3291 | seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ? |
3292 | "up" : "down"); | |
1da177e4 LT |
3293 | seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon); |
3294 | seq_printf(seq, "Up Delay (ms): %d\n", | |
3295 | bond->params.updelay * bond->params.miimon); | |
3296 | seq_printf(seq, "Down Delay (ms): %d\n", | |
3297 | bond->params.downdelay * bond->params.miimon); | |
3298 | ||
4756b02f MW |
3299 | |
3300 | /* ARP information */ | |
3d632c3f SH |
3301 | if (bond->params.arp_interval > 0) { |
3302 | int printed = 0; | |
4756b02f MW |
3303 | seq_printf(seq, "ARP Polling Interval (ms): %d\n", |
3304 | bond->params.arp_interval); | |
3305 | ||
3306 | seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); | |
3307 | ||
3d632c3f | 3308 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
4756b02f | 3309 | if (!bond->params.arp_targets[i]) |
5a31bec0 | 3310 | break; |
4756b02f MW |
3311 | if (printed) |
3312 | seq_printf(seq, ","); | |
8cf14e38 | 3313 | seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); |
4756b02f MW |
3314 | printed = 1; |
3315 | } | |
3316 | seq_printf(seq, "\n"); | |
3317 | } | |
3318 | ||
1da177e4 LT |
3319 | if (bond->params.mode == BOND_MODE_8023AD) { |
3320 | struct ad_info ad_info; | |
3321 | ||
3322 | seq_puts(seq, "\n802.3ad info\n"); | |
3323 | seq_printf(seq, "LACP rate: %s\n", | |
3324 | (bond->params.lacp_fast) ? "fast" : "slow"); | |
fd989c83 JV |
3325 | seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", |
3326 | ad_select_tbl[bond->params.ad_select].modename); | |
1da177e4 LT |
3327 | |
3328 | if (bond_3ad_get_active_agg_info(bond, &ad_info)) { | |
3329 | seq_printf(seq, "bond %s has no active aggregator\n", | |
3330 | bond->dev->name); | |
3331 | } else { | |
3332 | seq_printf(seq, "Active Aggregator Info:\n"); | |
3333 | ||
3334 | seq_printf(seq, "\tAggregator ID: %d\n", | |
3335 | ad_info.aggregator_id); | |
3336 | seq_printf(seq, "\tNumber of ports: %d\n", | |
3337 | ad_info.ports); | |
3338 | seq_printf(seq, "\tActor Key: %d\n", | |
3339 | ad_info.actor_key); | |
3340 | seq_printf(seq, "\tPartner Key: %d\n", | |
3341 | ad_info.partner_key); | |
e174961c JB |
3342 | seq_printf(seq, "\tPartner Mac Address: %pM\n", |
3343 | ad_info.partner_system); | |
1da177e4 LT |
3344 | } |
3345 | } | |
3346 | } | |
3347 | ||
3d632c3f SH |
3348 | static void bond_info_show_slave(struct seq_file *seq, |
3349 | const struct slave *slave) | |
1da177e4 LT |
3350 | { |
3351 | struct bonding *bond = seq->private; | |
3352 | ||
3353 | seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); | |
3354 | seq_printf(seq, "MII Status: %s\n", | |
3355 | (slave->link == BOND_LINK_UP) ? "up" : "down"); | |
dd53df26 KO |
3356 | seq_printf(seq, "Speed: %d Mbps\n", slave->speed); |
3357 | seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half"); | |
65509645 | 3358 | seq_printf(seq, "Link Failure Count: %u\n", |
1da177e4 LT |
3359 | slave->link_failure_count); |
3360 | ||
e174961c | 3361 | seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr); |
1da177e4 LT |
3362 | |
3363 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3364 | const struct aggregator *agg | |
3365 | = SLAVE_AD_INFO(slave).port.aggregator; | |
3366 | ||
3d632c3f | 3367 | if (agg) |
1da177e4 LT |
3368 | seq_printf(seq, "Aggregator ID: %d\n", |
3369 | agg->aggregator_identifier); | |
3d632c3f | 3370 | else |
1da177e4 | 3371 | seq_puts(seq, "Aggregator ID: N/A\n"); |
1da177e4 | 3372 | } |
bb1d9123 | 3373 | seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id); |
1da177e4 LT |
3374 | } |
3375 | ||
3376 | static int bond_info_seq_show(struct seq_file *seq, void *v) | |
3377 | { | |
3378 | if (v == SEQ_START_TOKEN) { | |
3379 | seq_printf(seq, "%s\n", version); | |
3380 | bond_info_show_master(seq); | |
3d632c3f | 3381 | } else |
1da177e4 | 3382 | bond_info_show_slave(seq, v); |
1da177e4 LT |
3383 | |
3384 | return 0; | |
3385 | } | |
3386 | ||
4101dec9 | 3387 | static const struct seq_operations bond_info_seq_ops = { |
1da177e4 LT |
3388 | .start = bond_info_seq_start, |
3389 | .next = bond_info_seq_next, | |
3390 | .stop = bond_info_seq_stop, | |
3391 | .show = bond_info_seq_show, | |
3392 | }; | |
3393 | ||
3394 | static int bond_info_open(struct inode *inode, struct file *file) | |
3395 | { | |
3396 | struct seq_file *seq; | |
3397 | struct proc_dir_entry *proc; | |
3398 | int res; | |
3399 | ||
3400 | res = seq_open(file, &bond_info_seq_ops); | |
3401 | if (!res) { | |
3402 | /* recover the pointer buried in proc_dir_entry data */ | |
3403 | seq = file->private_data; | |
3404 | proc = PDE(inode); | |
3405 | seq->private = proc->data; | |
3406 | } | |
3407 | ||
3408 | return res; | |
3409 | } | |
3410 | ||
d54b1fdb | 3411 | static const struct file_operations bond_info_fops = { |
1da177e4 LT |
3412 | .owner = THIS_MODULE, |
3413 | .open = bond_info_open, | |
3414 | .read = seq_read, | |
3415 | .llseek = seq_lseek, | |
3416 | .release = seq_release, | |
3417 | }; | |
3418 | ||
38fc0026 | 3419 | static void bond_create_proc_entry(struct bonding *bond) |
1da177e4 LT |
3420 | { |
3421 | struct net_device *bond_dev = bond->dev; | |
ec87fd3b | 3422 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); |
1da177e4 | 3423 | |
ec87fd3b | 3424 | if (bn->proc_dir) { |
a95609cb | 3425 | bond->proc_entry = proc_create_data(bond_dev->name, |
ec87fd3b | 3426 | S_IRUGO, bn->proc_dir, |
a95609cb | 3427 | &bond_info_fops, bond); |
3d632c3f | 3428 | if (bond->proc_entry == NULL) |
a4aee5c8 JP |
3429 | pr_warning("Warning: Cannot create /proc/net/%s/%s\n", |
3430 | DRV_NAME, bond_dev->name); | |
3d632c3f | 3431 | else |
1da177e4 | 3432 | memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); |
1da177e4 | 3433 | } |
1da177e4 LT |
3434 | } |
3435 | ||
3436 | static void bond_remove_proc_entry(struct bonding *bond) | |
3437 | { | |
ec87fd3b EB |
3438 | struct net_device *bond_dev = bond->dev; |
3439 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); | |
3440 | ||
3441 | if (bn->proc_dir && bond->proc_entry) { | |
3442 | remove_proc_entry(bond->proc_file_name, bn->proc_dir); | |
1da177e4 LT |
3443 | memset(bond->proc_file_name, 0, IFNAMSIZ); |
3444 | bond->proc_entry = NULL; | |
3445 | } | |
3446 | } | |
3447 | ||
3448 | /* Create the bonding directory under /proc/net, if doesn't exist yet. | |
3449 | * Caller must hold rtnl_lock. | |
3450 | */ | |
2c8c1e72 | 3451 | static void __net_init bond_create_proc_dir(struct bond_net *bn) |
1da177e4 | 3452 | { |
ec87fd3b EB |
3453 | if (!bn->proc_dir) { |
3454 | bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net); | |
3455 | if (!bn->proc_dir) | |
a4aee5c8 JP |
3456 | pr_warning("Warning: cannot create /proc/net/%s\n", |
3457 | DRV_NAME); | |
1da177e4 LT |
3458 | } |
3459 | } | |
3460 | ||
3461 | /* Destroy the bonding directory under /proc/net, if empty. | |
3462 | * Caller must hold rtnl_lock. | |
3463 | */ | |
2c8c1e72 | 3464 | static void __net_exit bond_destroy_proc_dir(struct bond_net *bn) |
1da177e4 | 3465 | { |
ec87fd3b EB |
3466 | if (bn->proc_dir) { |
3467 | remove_proc_entry(DRV_NAME, bn->net->proc_net); | |
3468 | bn->proc_dir = NULL; | |
1da177e4 LT |
3469 | } |
3470 | } | |
aee64faf JP |
3471 | |
3472 | #else /* !CONFIG_PROC_FS */ | |
3473 | ||
38fc0026 | 3474 | static void bond_create_proc_entry(struct bonding *bond) |
aee64faf JP |
3475 | { |
3476 | } | |
3477 | ||
3478 | static void bond_remove_proc_entry(struct bonding *bond) | |
3479 | { | |
3480 | } | |
3481 | ||
2c8c1e72 | 3482 | static inline void bond_create_proc_dir(struct bond_net *bn) |
aee64faf JP |
3483 | { |
3484 | } | |
3485 | ||
2c8c1e72 | 3486 | static inline void bond_destroy_proc_dir(struct bond_net *bn) |
aee64faf JP |
3487 | { |
3488 | } | |
3489 | ||
1da177e4 LT |
3490 | #endif /* CONFIG_PROC_FS */ |
3491 | ||
aee64faf | 3492 | |
1da177e4 LT |
3493 | /*-------------------------- netdev event handling --------------------------*/ |
3494 | ||
3495 | /* | |
3496 | * Change device name | |
3497 | */ | |
3498 | static int bond_event_changename(struct bonding *bond) | |
3499 | { | |
1da177e4 LT |
3500 | bond_remove_proc_entry(bond); |
3501 | bond_create_proc_entry(bond); | |
7e083840 | 3502 | |
1da177e4 LT |
3503 | return NOTIFY_DONE; |
3504 | } | |
3505 | ||
3d632c3f SH |
3506 | static int bond_master_netdev_event(unsigned long event, |
3507 | struct net_device *bond_dev) | |
1da177e4 | 3508 | { |
454d7c9b | 3509 | struct bonding *event_bond = netdev_priv(bond_dev); |
1da177e4 LT |
3510 | |
3511 | switch (event) { | |
3512 | case NETDEV_CHANGENAME: | |
3513 | return bond_event_changename(event_bond); | |
1da177e4 LT |
3514 | default: |
3515 | break; | |
3516 | } | |
3517 | ||
3518 | return NOTIFY_DONE; | |
3519 | } | |
3520 | ||
3d632c3f SH |
3521 | static int bond_slave_netdev_event(unsigned long event, |
3522 | struct net_device *slave_dev) | |
1da177e4 LT |
3523 | { |
3524 | struct net_device *bond_dev = slave_dev->master; | |
454d7c9b | 3525 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3526 | |
3527 | switch (event) { | |
3528 | case NETDEV_UNREGISTER: | |
3529 | if (bond_dev) { | |
1284cd3a JV |
3530 | if (bond->setup_by_slave) |
3531 | bond_release_and_destroy(bond_dev, slave_dev); | |
3532 | else | |
3533 | bond_release(bond_dev, slave_dev); | |
1da177e4 LT |
3534 | } |
3535 | break; | |
3536 | case NETDEV_CHANGE: | |
17d04500 JV |
3537 | if (bond->params.mode == BOND_MODE_8023AD || bond_is_lb(bond)) { |
3538 | struct slave *slave; | |
3539 | ||
3540 | slave = bond_get_slave_by_dev(bond, slave_dev); | |
3541 | if (slave) { | |
3542 | u16 old_speed = slave->speed; | |
3543 | u16 old_duplex = slave->duplex; | |
3544 | ||
3545 | bond_update_speed_duplex(slave); | |
3546 | ||
3547 | if (bond_is_lb(bond)) | |
3548 | break; | |
3549 | ||
3550 | if (old_speed != slave->speed) | |
3551 | bond_3ad_adapter_speed_changed(slave); | |
3552 | if (old_duplex != slave->duplex) | |
3553 | bond_3ad_adapter_duplex_changed(slave); | |
3554 | } | |
3555 | } | |
3556 | ||
1da177e4 LT |
3557 | break; |
3558 | case NETDEV_DOWN: | |
3559 | /* | |
3560 | * ... Or is it this? | |
3561 | */ | |
3562 | break; | |
3563 | case NETDEV_CHANGEMTU: | |
3564 | /* | |
3565 | * TODO: Should slaves be allowed to | |
3566 | * independently alter their MTU? For | |
3567 | * an active-backup bond, slaves need | |
3568 | * not be the same type of device, so | |
3569 | * MTUs may vary. For other modes, | |
3570 | * slaves arguably should have the | |
3571 | * same MTUs. To do this, we'd need to | |
3572 | * take over the slave's change_mtu | |
3573 | * function for the duration of their | |
3574 | * servitude. | |
3575 | */ | |
3576 | break; | |
3577 | case NETDEV_CHANGENAME: | |
3578 | /* | |
3579 | * TODO: handle changing the primary's name | |
3580 | */ | |
3581 | break; | |
8531c5ff AK |
3582 | case NETDEV_FEAT_CHANGE: |
3583 | bond_compute_features(bond); | |
3584 | break; | |
1da177e4 LT |
3585 | default: |
3586 | break; | |
3587 | } | |
3588 | ||
3589 | return NOTIFY_DONE; | |
3590 | } | |
3591 | ||
3592 | /* | |
3593 | * bond_netdev_event: handle netdev notifier chain events. | |
3594 | * | |
3595 | * This function receives events for the netdev chain. The caller (an | |
e041c683 | 3596 | * ioctl handler calling blocking_notifier_call_chain) holds the necessary |
1da177e4 LT |
3597 | * locks for us to safely manipulate the slave devices (RTNL lock, |
3598 | * dev_probe_lock). | |
3599 | */ | |
3d632c3f SH |
3600 | static int bond_netdev_event(struct notifier_block *this, |
3601 | unsigned long event, void *ptr) | |
1da177e4 LT |
3602 | { |
3603 | struct net_device *event_dev = (struct net_device *)ptr; | |
3604 | ||
5a03cdb7 | 3605 | pr_debug("event_dev: %s, event: %lx\n", |
a4aee5c8 JP |
3606 | event_dev ? event_dev->name : "None", |
3607 | event); | |
1da177e4 | 3608 | |
0b680e75 JV |
3609 | if (!(event_dev->priv_flags & IFF_BONDING)) |
3610 | return NOTIFY_DONE; | |
3611 | ||
1da177e4 | 3612 | if (event_dev->flags & IFF_MASTER) { |
5a03cdb7 | 3613 | pr_debug("IFF_MASTER\n"); |
1da177e4 LT |
3614 | return bond_master_netdev_event(event, event_dev); |
3615 | } | |
3616 | ||
3617 | if (event_dev->flags & IFF_SLAVE) { | |
5a03cdb7 | 3618 | pr_debug("IFF_SLAVE\n"); |
1da177e4 LT |
3619 | return bond_slave_netdev_event(event, event_dev); |
3620 | } | |
3621 | ||
3622 | return NOTIFY_DONE; | |
3623 | } | |
3624 | ||
c3ade5ca JV |
3625 | /* |
3626 | * bond_inetaddr_event: handle inetaddr notifier chain events. | |
3627 | * | |
3628 | * We keep track of device IPs primarily to use as source addresses in | |
3629 | * ARP monitor probes (rather than spewing out broadcasts all the time). | |
3630 | * | |
3631 | * We track one IP for the main device (if it has one), plus one per VLAN. | |
3632 | */ | |
3633 | static int bond_inetaddr_event(struct notifier_block *this, unsigned long event, void *ptr) | |
3634 | { | |
3635 | struct in_ifaddr *ifa = ptr; | |
3636 | struct net_device *vlan_dev, *event_dev = ifa->ifa_dev->dev; | |
ec87fd3b | 3637 | struct bond_net *bn = net_generic(dev_net(event_dev), bond_net_id); |
0883beca PE |
3638 | struct bonding *bond; |
3639 | struct vlan_entry *vlan; | |
c3ade5ca | 3640 | |
ec87fd3b | 3641 | list_for_each_entry(bond, &bn->dev_list, bond_list) { |
c3ade5ca JV |
3642 | if (bond->dev == event_dev) { |
3643 | switch (event) { | |
3644 | case NETDEV_UP: | |
3645 | bond->master_ip = ifa->ifa_local; | |
3646 | return NOTIFY_OK; | |
3647 | case NETDEV_DOWN: | |
3648 | bond->master_ip = bond_glean_dev_ip(bond->dev); | |
3649 | return NOTIFY_OK; | |
3650 | default: | |
3651 | return NOTIFY_DONE; | |
3652 | } | |
3653 | } | |
3654 | ||
0883beca | 3655 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
f35188fa JV |
3656 | if (!bond->vlgrp) |
3657 | continue; | |
5c15bdec | 3658 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
c3ade5ca JV |
3659 | if (vlan_dev == event_dev) { |
3660 | switch (event) { | |
3661 | case NETDEV_UP: | |
3662 | vlan->vlan_ip = ifa->ifa_local; | |
3663 | return NOTIFY_OK; | |
3664 | case NETDEV_DOWN: | |
3665 | vlan->vlan_ip = | |
3666 | bond_glean_dev_ip(vlan_dev); | |
3667 | return NOTIFY_OK; | |
3668 | default: | |
3669 | return NOTIFY_DONE; | |
3670 | } | |
3671 | } | |
3672 | } | |
3673 | } | |
3674 | return NOTIFY_DONE; | |
3675 | } | |
3676 | ||
1da177e4 LT |
3677 | static struct notifier_block bond_netdev_notifier = { |
3678 | .notifier_call = bond_netdev_event, | |
3679 | }; | |
3680 | ||
c3ade5ca JV |
3681 | static struct notifier_block bond_inetaddr_notifier = { |
3682 | .notifier_call = bond_inetaddr_event, | |
3683 | }; | |
3684 | ||
1da177e4 LT |
3685 | /*-------------------------- Packet type handling ---------------------------*/ |
3686 | ||
3687 | /* register to receive lacpdus on a bond */ | |
3688 | static void bond_register_lacpdu(struct bonding *bond) | |
3689 | { | |
3690 | struct packet_type *pk_type = &(BOND_AD_INFO(bond).ad_pkt_type); | |
3691 | ||
3692 | /* initialize packet type */ | |
3693 | pk_type->type = PKT_TYPE_LACPDU; | |
3694 | pk_type->dev = bond->dev; | |
3695 | pk_type->func = bond_3ad_lacpdu_recv; | |
3696 | ||
3697 | dev_add_pack(pk_type); | |
3698 | } | |
3699 | ||
3700 | /* unregister to receive lacpdus on a bond */ | |
3701 | static void bond_unregister_lacpdu(struct bonding *bond) | |
3702 | { | |
3703 | dev_remove_pack(&(BOND_AD_INFO(bond).ad_pkt_type)); | |
3704 | } | |
3705 | ||
f5b2b966 JV |
3706 | void bond_register_arp(struct bonding *bond) |
3707 | { | |
3708 | struct packet_type *pt = &bond->arp_mon_pt; | |
3709 | ||
c4f283b1 JV |
3710 | if (pt->type) |
3711 | return; | |
3712 | ||
f5b2b966 | 3713 | pt->type = htons(ETH_P_ARP); |
e245cb71 | 3714 | pt->dev = bond->dev; |
f5b2b966 JV |
3715 | pt->func = bond_arp_rcv; |
3716 | dev_add_pack(pt); | |
3717 | } | |
3718 | ||
3719 | void bond_unregister_arp(struct bonding *bond) | |
3720 | { | |
c4f283b1 JV |
3721 | struct packet_type *pt = &bond->arp_mon_pt; |
3722 | ||
3723 | dev_remove_pack(pt); | |
3724 | pt->type = 0; | |
f5b2b966 JV |
3725 | } |
3726 | ||
169a3e66 JV |
3727 | /*---------------------------- Hashing Policies -----------------------------*/ |
3728 | ||
6f6652be JV |
3729 | /* |
3730 | * Hash for the output device based upon layer 2 and layer 3 data. If | |
3731 | * the packet is not IP mimic bond_xmit_hash_policy_l2() | |
3732 | */ | |
a361c83c | 3733 | static int bond_xmit_hash_policy_l23(struct sk_buff *skb, int count) |
6f6652be JV |
3734 | { |
3735 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
3736 | struct iphdr *iph = ip_hdr(skb); | |
3737 | ||
f14c4e4e | 3738 | if (skb->protocol == htons(ETH_P_IP)) { |
6f6652be | 3739 | return ((ntohl(iph->saddr ^ iph->daddr) & 0xffff) ^ |
d3da6831 | 3740 | (data->h_dest[5] ^ data->h_source[5])) % count; |
6f6652be JV |
3741 | } |
3742 | ||
d3da6831 | 3743 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
6f6652be JV |
3744 | } |
3745 | ||
169a3e66 | 3746 | /* |
59c51591 | 3747 | * Hash for the output device based upon layer 3 and layer 4 data. If |
169a3e66 JV |
3748 | * the packet is a frag or not TCP or UDP, just use layer 3 data. If it is |
3749 | * altogether not IP, mimic bond_xmit_hash_policy_l2() | |
3750 | */ | |
a361c83c | 3751 | static int bond_xmit_hash_policy_l34(struct sk_buff *skb, int count) |
169a3e66 JV |
3752 | { |
3753 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
eddc9ec5 | 3754 | struct iphdr *iph = ip_hdr(skb); |
d3bb52b0 | 3755 | __be16 *layer4hdr = (__be16 *)((u32 *)iph + iph->ihl); |
169a3e66 JV |
3756 | int layer4_xor = 0; |
3757 | ||
f14c4e4e BH |
3758 | if (skb->protocol == htons(ETH_P_IP)) { |
3759 | if (!(iph->frag_off & htons(IP_MF|IP_OFFSET)) && | |
169a3e66 JV |
3760 | (iph->protocol == IPPROTO_TCP || |
3761 | iph->protocol == IPPROTO_UDP)) { | |
d3bb52b0 | 3762 | layer4_xor = ntohs((*layer4hdr ^ *(layer4hdr + 1))); |
169a3e66 JV |
3763 | } |
3764 | return (layer4_xor ^ | |
3765 | ((ntohl(iph->saddr ^ iph->daddr)) & 0xffff)) % count; | |
3766 | ||
3767 | } | |
3768 | ||
d3da6831 | 3769 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
169a3e66 JV |
3770 | } |
3771 | ||
3772 | /* | |
3773 | * Hash for the output device based upon layer 2 data | |
3774 | */ | |
a361c83c | 3775 | static int bond_xmit_hash_policy_l2(struct sk_buff *skb, int count) |
169a3e66 JV |
3776 | { |
3777 | struct ethhdr *data = (struct ethhdr *)skb->data; | |
3778 | ||
d3da6831 | 3779 | return (data->h_dest[5] ^ data->h_source[5]) % count; |
169a3e66 JV |
3780 | } |
3781 | ||
1da177e4 LT |
3782 | /*-------------------------- Device entry points ----------------------------*/ |
3783 | ||
3784 | static int bond_open(struct net_device *bond_dev) | |
3785 | { | |
454d7c9b | 3786 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3787 | |
3788 | bond->kill_timers = 0; | |
3789 | ||
5a37e8ca FL |
3790 | INIT_DELAYED_WORK(&bond->mcast_work, bond_resend_igmp_join_requests_delayed); |
3791 | ||
58402054 | 3792 | if (bond_is_lb(bond)) { |
1da177e4 LT |
3793 | /* bond_alb_initialize must be called before the timer |
3794 | * is started. | |
3795 | */ | |
3796 | if (bond_alb_initialize(bond, (bond->params.mode == BOND_MODE_ALB))) { | |
3797 | /* something went wrong - fail the open operation */ | |
b473946a | 3798 | return -ENOMEM; |
1da177e4 LT |
3799 | } |
3800 | ||
1b76b316 JV |
3801 | INIT_DELAYED_WORK(&bond->alb_work, bond_alb_monitor); |
3802 | queue_delayed_work(bond->wq, &bond->alb_work, 0); | |
1da177e4 LT |
3803 | } |
3804 | ||
3805 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ | |
1b76b316 JV |
3806 | INIT_DELAYED_WORK(&bond->mii_work, bond_mii_monitor); |
3807 | queue_delayed_work(bond->wq, &bond->mii_work, 0); | |
1da177e4 LT |
3808 | } |
3809 | ||
3810 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ | |
1b76b316 JV |
3811 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) |
3812 | INIT_DELAYED_WORK(&bond->arp_work, | |
3813 | bond_activebackup_arp_mon); | |
3814 | else | |
3815 | INIT_DELAYED_WORK(&bond->arp_work, | |
3816 | bond_loadbalance_arp_mon); | |
3817 | ||
3818 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
f5b2b966 JV |
3819 | if (bond->params.arp_validate) |
3820 | bond_register_arp(bond); | |
1da177e4 LT |
3821 | } |
3822 | ||
3823 | if (bond->params.mode == BOND_MODE_8023AD) { | |
a40745f5 | 3824 | INIT_DELAYED_WORK(&bond->ad_work, bond_3ad_state_machine_handler); |
1b76b316 | 3825 | queue_delayed_work(bond->wq, &bond->ad_work, 0); |
1da177e4 LT |
3826 | /* register to receive LACPDUs */ |
3827 | bond_register_lacpdu(bond); | |
fd989c83 | 3828 | bond_3ad_initiate_agg_selection(bond, 1); |
1da177e4 LT |
3829 | } |
3830 | ||
3831 | return 0; | |
3832 | } | |
3833 | ||
3834 | static int bond_close(struct net_device *bond_dev) | |
3835 | { | |
454d7c9b | 3836 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
3837 | |
3838 | if (bond->params.mode == BOND_MODE_8023AD) { | |
3839 | /* Unregister the receive of LACPDUs */ | |
3840 | bond_unregister_lacpdu(bond); | |
3841 | } | |
3842 | ||
f5b2b966 JV |
3843 | if (bond->params.arp_validate) |
3844 | bond_unregister_arp(bond); | |
3845 | ||
1da177e4 LT |
3846 | write_lock_bh(&bond->lock); |
3847 | ||
b59f9f74 | 3848 | bond->send_grat_arp = 0; |
305d552a | 3849 | bond->send_unsol_na = 0; |
1da177e4 LT |
3850 | |
3851 | /* signal timers not to re-arm */ | |
3852 | bond->kill_timers = 1; | |
3853 | ||
3854 | write_unlock_bh(&bond->lock); | |
3855 | ||
1da177e4 | 3856 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ |
1b76b316 | 3857 | cancel_delayed_work(&bond->mii_work); |
1da177e4 LT |
3858 | } |
3859 | ||
3860 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ | |
1b76b316 | 3861 | cancel_delayed_work(&bond->arp_work); |
1da177e4 LT |
3862 | } |
3863 | ||
3864 | switch (bond->params.mode) { | |
3865 | case BOND_MODE_8023AD: | |
1b76b316 | 3866 | cancel_delayed_work(&bond->ad_work); |
1da177e4 LT |
3867 | break; |
3868 | case BOND_MODE_TLB: | |
3869 | case BOND_MODE_ALB: | |
1b76b316 | 3870 | cancel_delayed_work(&bond->alb_work); |
1da177e4 LT |
3871 | break; |
3872 | default: | |
3873 | break; | |
3874 | } | |
3875 | ||
5a37e8ca FL |
3876 | if (delayed_work_pending(&bond->mcast_work)) |
3877 | cancel_delayed_work(&bond->mcast_work); | |
1da177e4 | 3878 | |
58402054 | 3879 | if (bond_is_lb(bond)) { |
1da177e4 LT |
3880 | /* Must be called only after all |
3881 | * slaves have been released | |
3882 | */ | |
3883 | bond_alb_deinitialize(bond); | |
3884 | } | |
3885 | ||
3886 | return 0; | |
3887 | } | |
3888 | ||
28172739 ED |
3889 | static struct rtnl_link_stats64 *bond_get_stats(struct net_device *bond_dev, |
3890 | struct rtnl_link_stats64 *stats) | |
1da177e4 | 3891 | { |
454d7c9b | 3892 | struct bonding *bond = netdev_priv(bond_dev); |
28172739 | 3893 | struct rtnl_link_stats64 temp; |
1da177e4 LT |
3894 | struct slave *slave; |
3895 | int i; | |
3896 | ||
28172739 | 3897 | memset(stats, 0, sizeof(*stats)); |
1da177e4 LT |
3898 | |
3899 | read_lock_bh(&bond->lock); | |
3900 | ||
3901 | bond_for_each_slave(bond, slave, i) { | |
be1f3c2c | 3902 | const struct rtnl_link_stats64 *sstats = |
28172739 ED |
3903 | dev_get_stats(slave->dev, &temp); |
3904 | ||
3905 | stats->rx_packets += sstats->rx_packets; | |
3906 | stats->rx_bytes += sstats->rx_bytes; | |
3907 | stats->rx_errors += sstats->rx_errors; | |
3908 | stats->rx_dropped += sstats->rx_dropped; | |
3909 | ||
3910 | stats->tx_packets += sstats->tx_packets; | |
3911 | stats->tx_bytes += sstats->tx_bytes; | |
3912 | stats->tx_errors += sstats->tx_errors; | |
3913 | stats->tx_dropped += sstats->tx_dropped; | |
3914 | ||
3915 | stats->multicast += sstats->multicast; | |
3916 | stats->collisions += sstats->collisions; | |
3917 | ||
3918 | stats->rx_length_errors += sstats->rx_length_errors; | |
3919 | stats->rx_over_errors += sstats->rx_over_errors; | |
3920 | stats->rx_crc_errors += sstats->rx_crc_errors; | |
3921 | stats->rx_frame_errors += sstats->rx_frame_errors; | |
3922 | stats->rx_fifo_errors += sstats->rx_fifo_errors; | |
3923 | stats->rx_missed_errors += sstats->rx_missed_errors; | |
3924 | ||
3925 | stats->tx_aborted_errors += sstats->tx_aborted_errors; | |
3926 | stats->tx_carrier_errors += sstats->tx_carrier_errors; | |
3927 | stats->tx_fifo_errors += sstats->tx_fifo_errors; | |
3928 | stats->tx_heartbeat_errors += sstats->tx_heartbeat_errors; | |
3929 | stats->tx_window_errors += sstats->tx_window_errors; | |
2439f9eb AG |
3930 | } |
3931 | ||
1da177e4 LT |
3932 | read_unlock_bh(&bond->lock); |
3933 | ||
3934 | return stats; | |
3935 | } | |
3936 | ||
3937 | static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd) | |
3938 | { | |
3939 | struct net_device *slave_dev = NULL; | |
3940 | struct ifbond k_binfo; | |
3941 | struct ifbond __user *u_binfo = NULL; | |
3942 | struct ifslave k_sinfo; | |
3943 | struct ifslave __user *u_sinfo = NULL; | |
3944 | struct mii_ioctl_data *mii = NULL; | |
1da177e4 LT |
3945 | int res = 0; |
3946 | ||
a4aee5c8 | 3947 | pr_debug("bond_ioctl: master=%s, cmd=%d\n", bond_dev->name, cmd); |
1da177e4 LT |
3948 | |
3949 | switch (cmd) { | |
1da177e4 LT |
3950 | case SIOCGMIIPHY: |
3951 | mii = if_mii(ifr); | |
3d632c3f | 3952 | if (!mii) |
1da177e4 | 3953 | return -EINVAL; |
3d632c3f | 3954 | |
1da177e4 LT |
3955 | mii->phy_id = 0; |
3956 | /* Fall Through */ | |
3957 | case SIOCGMIIREG: | |
3958 | /* | |
3959 | * We do this again just in case we were called by SIOCGMIIREG | |
3960 | * instead of SIOCGMIIPHY. | |
3961 | */ | |
3962 | mii = if_mii(ifr); | |
3d632c3f | 3963 | if (!mii) |
1da177e4 | 3964 | return -EINVAL; |
3d632c3f | 3965 | |
1da177e4 LT |
3966 | |
3967 | if (mii->reg_num == 1) { | |
454d7c9b | 3968 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 3969 | mii->val_out = 0; |
6603a6f2 | 3970 | read_lock(&bond->lock); |
1da177e4 | 3971 | read_lock(&bond->curr_slave_lock); |
3d632c3f | 3972 | if (netif_carrier_ok(bond->dev)) |
1da177e4 | 3973 | mii->val_out = BMSR_LSTATUS; |
3d632c3f | 3974 | |
1da177e4 | 3975 | read_unlock(&bond->curr_slave_lock); |
6603a6f2 | 3976 | read_unlock(&bond->lock); |
1da177e4 LT |
3977 | } |
3978 | ||
3979 | return 0; | |
3980 | case BOND_INFO_QUERY_OLD: | |
3981 | case SIOCBONDINFOQUERY: | |
3982 | u_binfo = (struct ifbond __user *)ifr->ifr_data; | |
3983 | ||
3d632c3f | 3984 | if (copy_from_user(&k_binfo, u_binfo, sizeof(ifbond))) |
1da177e4 | 3985 | return -EFAULT; |
1da177e4 LT |
3986 | |
3987 | res = bond_info_query(bond_dev, &k_binfo); | |
3d632c3f SH |
3988 | if (res == 0 && |
3989 | copy_to_user(u_binfo, &k_binfo, sizeof(ifbond))) | |
3990 | return -EFAULT; | |
1da177e4 LT |
3991 | |
3992 | return res; | |
3993 | case BOND_SLAVE_INFO_QUERY_OLD: | |
3994 | case SIOCBONDSLAVEINFOQUERY: | |
3995 | u_sinfo = (struct ifslave __user *)ifr->ifr_data; | |
3996 | ||
3d632c3f | 3997 | if (copy_from_user(&k_sinfo, u_sinfo, sizeof(ifslave))) |
1da177e4 | 3998 | return -EFAULT; |
1da177e4 LT |
3999 | |
4000 | res = bond_slave_info_query(bond_dev, &k_sinfo); | |
3d632c3f SH |
4001 | if (res == 0 && |
4002 | copy_to_user(u_sinfo, &k_sinfo, sizeof(ifslave))) | |
4003 | return -EFAULT; | |
1da177e4 LT |
4004 | |
4005 | return res; | |
4006 | default: | |
4007 | /* Go on */ | |
4008 | break; | |
4009 | } | |
4010 | ||
3d632c3f | 4011 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4012 | return -EPERM; |
1da177e4 | 4013 | |
ec87fd3b | 4014 | slave_dev = dev_get_by_name(dev_net(bond_dev), ifr->ifr_slave); |
1da177e4 | 4015 | |
a4aee5c8 | 4016 | pr_debug("slave_dev=%p:\n", slave_dev); |
1da177e4 | 4017 | |
3d632c3f | 4018 | if (!slave_dev) |
1da177e4 | 4019 | res = -ENODEV; |
3d632c3f | 4020 | else { |
a4aee5c8 | 4021 | pr_debug("slave_dev->name=%s:\n", slave_dev->name); |
1da177e4 LT |
4022 | switch (cmd) { |
4023 | case BOND_ENSLAVE_OLD: | |
4024 | case SIOCBONDENSLAVE: | |
4025 | res = bond_enslave(bond_dev, slave_dev); | |
4026 | break; | |
4027 | case BOND_RELEASE_OLD: | |
4028 | case SIOCBONDRELEASE: | |
4029 | res = bond_release(bond_dev, slave_dev); | |
4030 | break; | |
4031 | case BOND_SETHWADDR_OLD: | |
4032 | case SIOCBONDSETHWADDR: | |
4033 | res = bond_sethwaddr(bond_dev, slave_dev); | |
4034 | break; | |
4035 | case BOND_CHANGE_ACTIVE_OLD: | |
4036 | case SIOCBONDCHANGEACTIVE: | |
4037 | res = bond_ioctl_change_active(bond_dev, slave_dev); | |
4038 | break; | |
4039 | default: | |
4040 | res = -EOPNOTSUPP; | |
4041 | } | |
4042 | ||
4043 | dev_put(slave_dev); | |
4044 | } | |
4045 | ||
1da177e4 LT |
4046 | return res; |
4047 | } | |
4048 | ||
22bedad3 JP |
4049 | static bool bond_addr_in_mc_list(unsigned char *addr, |
4050 | struct netdev_hw_addr_list *list, | |
4051 | int addrlen) | |
4052 | { | |
4053 | struct netdev_hw_addr *ha; | |
4054 | ||
4055 | netdev_hw_addr_list_for_each(ha, list) | |
4056 | if (!memcmp(ha->addr, addr, addrlen)) | |
4057 | return true; | |
4058 | ||
4059 | return false; | |
4060 | } | |
4061 | ||
1da177e4 LT |
4062 | static void bond_set_multicast_list(struct net_device *bond_dev) |
4063 | { | |
454d7c9b | 4064 | struct bonding *bond = netdev_priv(bond_dev); |
22bedad3 JP |
4065 | struct netdev_hw_addr *ha; |
4066 | bool found; | |
1da177e4 | 4067 | |
1da177e4 LT |
4068 | /* |
4069 | * Do promisc before checking multicast_mode | |
4070 | */ | |
3d632c3f | 4071 | if ((bond_dev->flags & IFF_PROMISC) && !(bond->flags & IFF_PROMISC)) |
7e1a1ac1 WC |
4072 | /* |
4073 | * FIXME: Need to handle the error when one of the multi-slaves | |
4074 | * encounters error. | |
4075 | */ | |
1da177e4 | 4076 | bond_set_promiscuity(bond, 1); |
1da177e4 | 4077 | |
3d632c3f SH |
4078 | |
4079 | if (!(bond_dev->flags & IFF_PROMISC) && (bond->flags & IFF_PROMISC)) | |
1da177e4 | 4080 | bond_set_promiscuity(bond, -1); |
3d632c3f | 4081 | |
1da177e4 LT |
4082 | |
4083 | /* set allmulti flag to slaves */ | |
3d632c3f | 4084 | if ((bond_dev->flags & IFF_ALLMULTI) && !(bond->flags & IFF_ALLMULTI)) |
7e1a1ac1 WC |
4085 | /* |
4086 | * FIXME: Need to handle the error when one of the multi-slaves | |
4087 | * encounters error. | |
4088 | */ | |
1da177e4 | 4089 | bond_set_allmulti(bond, 1); |
1da177e4 | 4090 | |
3d632c3f SH |
4091 | |
4092 | if (!(bond_dev->flags & IFF_ALLMULTI) && (bond->flags & IFF_ALLMULTI)) | |
1da177e4 | 4093 | bond_set_allmulti(bond, -1); |
3d632c3f | 4094 | |
1da177e4 | 4095 | |
80ee5ad2 JV |
4096 | read_lock(&bond->lock); |
4097 | ||
1da177e4 LT |
4098 | bond->flags = bond_dev->flags; |
4099 | ||
4100 | /* looking for addresses to add to slaves' mc list */ | |
22bedad3 JP |
4101 | netdev_for_each_mc_addr(ha, bond_dev) { |
4102 | found = bond_addr_in_mc_list(ha->addr, &bond->mc_list, | |
4103 | bond_dev->addr_len); | |
4104 | if (!found) | |
4105 | bond_mc_add(bond, ha->addr); | |
1da177e4 LT |
4106 | } |
4107 | ||
4108 | /* looking for addresses to delete from slaves' list */ | |
22bedad3 JP |
4109 | netdev_hw_addr_list_for_each(ha, &bond->mc_list) { |
4110 | found = bond_addr_in_mc_list(ha->addr, &bond_dev->mc, | |
4111 | bond_dev->addr_len); | |
4112 | if (!found) | |
4113 | bond_mc_del(bond, ha->addr); | |
1da177e4 LT |
4114 | } |
4115 | ||
4116 | /* save master's multicast list */ | |
22bedad3 JP |
4117 | __hw_addr_flush(&bond->mc_list); |
4118 | __hw_addr_add_multiple(&bond->mc_list, &bond_dev->mc, | |
4119 | bond_dev->addr_len, NETDEV_HW_ADDR_T_MULTICAST); | |
1da177e4 | 4120 | |
80ee5ad2 | 4121 | read_unlock(&bond->lock); |
1da177e4 LT |
4122 | } |
4123 | ||
00829823 SH |
4124 | static int bond_neigh_setup(struct net_device *dev, struct neigh_parms *parms) |
4125 | { | |
4126 | struct bonding *bond = netdev_priv(dev); | |
4127 | struct slave *slave = bond->first_slave; | |
4128 | ||
4129 | if (slave) { | |
4130 | const struct net_device_ops *slave_ops | |
4131 | = slave->dev->netdev_ops; | |
4132 | if (slave_ops->ndo_neigh_setup) | |
72e2240f | 4133 | return slave_ops->ndo_neigh_setup(slave->dev, parms); |
00829823 SH |
4134 | } |
4135 | return 0; | |
4136 | } | |
4137 | ||
1da177e4 LT |
4138 | /* |
4139 | * Change the MTU of all of a master's slaves to match the master | |
4140 | */ | |
4141 | static int bond_change_mtu(struct net_device *bond_dev, int new_mtu) | |
4142 | { | |
454d7c9b | 4143 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4144 | struct slave *slave, *stop_at; |
4145 | int res = 0; | |
4146 | int i; | |
4147 | ||
5a03cdb7 | 4148 | pr_debug("bond=%p, name=%s, new_mtu=%d\n", bond, |
a4aee5c8 | 4149 | (bond_dev ? bond_dev->name : "None"), new_mtu); |
1da177e4 LT |
4150 | |
4151 | /* Can't hold bond->lock with bh disabled here since | |
4152 | * some base drivers panic. On the other hand we can't | |
4153 | * hold bond->lock without bh disabled because we'll | |
4154 | * deadlock. The only solution is to rely on the fact | |
4155 | * that we're under rtnl_lock here, and the slaves | |
4156 | * list won't change. This doesn't solve the problem | |
4157 | * of setting the slave's MTU while it is | |
4158 | * transmitting, but the assumption is that the base | |
4159 | * driver can handle that. | |
4160 | * | |
4161 | * TODO: figure out a way to safely iterate the slaves | |
4162 | * list, but without holding a lock around the actual | |
4163 | * call to the base driver. | |
4164 | */ | |
4165 | ||
4166 | bond_for_each_slave(bond, slave, i) { | |
a4aee5c8 JP |
4167 | pr_debug("s %p s->p %p c_m %p\n", |
4168 | slave, | |
4169 | slave->prev, | |
4170 | slave->dev->netdev_ops->ndo_change_mtu); | |
e944ef79 | 4171 | |
1da177e4 LT |
4172 | res = dev_set_mtu(slave->dev, new_mtu); |
4173 | ||
4174 | if (res) { | |
4175 | /* If we failed to set the slave's mtu to the new value | |
4176 | * we must abort the operation even in ACTIVE_BACKUP | |
4177 | * mode, because if we allow the backup slaves to have | |
4178 | * different mtu values than the active slave we'll | |
4179 | * need to change their mtu when doing a failover. That | |
4180 | * means changing their mtu from timer context, which | |
4181 | * is probably not a good idea. | |
4182 | */ | |
5a03cdb7 | 4183 | pr_debug("err %d %s\n", res, slave->dev->name); |
1da177e4 LT |
4184 | goto unwind; |
4185 | } | |
4186 | } | |
4187 | ||
4188 | bond_dev->mtu = new_mtu; | |
4189 | ||
4190 | return 0; | |
4191 | ||
4192 | unwind: | |
4193 | /* unwind from head to the slave that failed */ | |
4194 | stop_at = slave; | |
4195 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { | |
4196 | int tmp_res; | |
4197 | ||
4198 | tmp_res = dev_set_mtu(slave->dev, bond_dev->mtu); | |
4199 | if (tmp_res) { | |
a4aee5c8 JP |
4200 | pr_debug("unwind err %d dev %s\n", |
4201 | tmp_res, slave->dev->name); | |
1da177e4 LT |
4202 | } |
4203 | } | |
4204 | ||
4205 | return res; | |
4206 | } | |
4207 | ||
4208 | /* | |
4209 | * Change HW address | |
4210 | * | |
4211 | * Note that many devices must be down to change the HW address, and | |
4212 | * downing the master releases all slaves. We can make bonds full of | |
4213 | * bonding devices to test this, however. | |
4214 | */ | |
4215 | static int bond_set_mac_address(struct net_device *bond_dev, void *addr) | |
4216 | { | |
454d7c9b | 4217 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4218 | struct sockaddr *sa = addr, tmp_sa; |
4219 | struct slave *slave, *stop_at; | |
4220 | int res = 0; | |
4221 | int i; | |
4222 | ||
eb7cc59a SH |
4223 | if (bond->params.mode == BOND_MODE_ALB) |
4224 | return bond_alb_set_mac_address(bond_dev, addr); | |
4225 | ||
4226 | ||
a4aee5c8 JP |
4227 | pr_debug("bond=%p, name=%s\n", |
4228 | bond, bond_dev ? bond_dev->name : "None"); | |
1da177e4 | 4229 | |
dd957c57 | 4230 | /* |
3915c1e8 JV |
4231 | * If fail_over_mac is set to active, do nothing and return |
4232 | * success. Returning an error causes ifenslave to fail. | |
dd957c57 | 4233 | */ |
3915c1e8 | 4234 | if (bond->params.fail_over_mac == BOND_FOM_ACTIVE) |
dd957c57 | 4235 | return 0; |
2ab82852 | 4236 | |
3d632c3f | 4237 | if (!is_valid_ether_addr(sa->sa_data)) |
1da177e4 | 4238 | return -EADDRNOTAVAIL; |
1da177e4 LT |
4239 | |
4240 | /* Can't hold bond->lock with bh disabled here since | |
4241 | * some base drivers panic. On the other hand we can't | |
4242 | * hold bond->lock without bh disabled because we'll | |
4243 | * deadlock. The only solution is to rely on the fact | |
4244 | * that we're under rtnl_lock here, and the slaves | |
4245 | * list won't change. This doesn't solve the problem | |
4246 | * of setting the slave's hw address while it is | |
4247 | * transmitting, but the assumption is that the base | |
4248 | * driver can handle that. | |
4249 | * | |
4250 | * TODO: figure out a way to safely iterate the slaves | |
4251 | * list, but without holding a lock around the actual | |
4252 | * call to the base driver. | |
4253 | */ | |
4254 | ||
4255 | bond_for_each_slave(bond, slave, i) { | |
eb7cc59a | 4256 | const struct net_device_ops *slave_ops = slave->dev->netdev_ops; |
5a03cdb7 | 4257 | pr_debug("slave %p %s\n", slave, slave->dev->name); |
1da177e4 | 4258 | |
eb7cc59a | 4259 | if (slave_ops->ndo_set_mac_address == NULL) { |
1da177e4 | 4260 | res = -EOPNOTSUPP; |
5a03cdb7 | 4261 | pr_debug("EOPNOTSUPP %s\n", slave->dev->name); |
1da177e4 LT |
4262 | goto unwind; |
4263 | } | |
4264 | ||
4265 | res = dev_set_mac_address(slave->dev, addr); | |
4266 | if (res) { | |
4267 | /* TODO: consider downing the slave | |
4268 | * and retry ? | |
4269 | * User should expect communications | |
4270 | * breakage anyway until ARP finish | |
4271 | * updating, so... | |
4272 | */ | |
5a03cdb7 | 4273 | pr_debug("err %d %s\n", res, slave->dev->name); |
1da177e4 LT |
4274 | goto unwind; |
4275 | } | |
4276 | } | |
4277 | ||
4278 | /* success */ | |
4279 | memcpy(bond_dev->dev_addr, sa->sa_data, bond_dev->addr_len); | |
4280 | return 0; | |
4281 | ||
4282 | unwind: | |
4283 | memcpy(tmp_sa.sa_data, bond_dev->dev_addr, bond_dev->addr_len); | |
4284 | tmp_sa.sa_family = bond_dev->type; | |
4285 | ||
4286 | /* unwind from head to the slave that failed */ | |
4287 | stop_at = slave; | |
4288 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { | |
4289 | int tmp_res; | |
4290 | ||
4291 | tmp_res = dev_set_mac_address(slave->dev, &tmp_sa); | |
4292 | if (tmp_res) { | |
a4aee5c8 JP |
4293 | pr_debug("unwind err %d dev %s\n", |
4294 | tmp_res, slave->dev->name); | |
1da177e4 LT |
4295 | } |
4296 | } | |
4297 | ||
4298 | return res; | |
4299 | } | |
4300 | ||
4301 | static int bond_xmit_roundrobin(struct sk_buff *skb, struct net_device *bond_dev) | |
4302 | { | |
454d7c9b | 4303 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 4304 | struct slave *slave, *start_at; |
cf5f9044 | 4305 | int i, slave_no, res = 1; |
a2fd940f | 4306 | struct iphdr *iph = ip_hdr(skb); |
1da177e4 LT |
4307 | |
4308 | read_lock(&bond->lock); | |
4309 | ||
3d632c3f | 4310 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4311 | goto out; |
cf5f9044 | 4312 | /* |
a2fd940f AG |
4313 | * Start with the curr_active_slave that joined the bond as the |
4314 | * default for sending IGMP traffic. For failover purposes one | |
4315 | * needs to maintain some consistency for the interface that will | |
4316 | * send the join/membership reports. The curr_active_slave found | |
4317 | * will send all of this type of traffic. | |
cf5f9044 | 4318 | */ |
00ae7028 | 4319 | if ((iph->protocol == IPPROTO_IGMP) && |
a2fd940f | 4320 | (skb->protocol == htons(ETH_P_IP))) { |
1da177e4 | 4321 | |
a2fd940f AG |
4322 | read_lock(&bond->curr_slave_lock); |
4323 | slave = bond->curr_active_slave; | |
4324 | read_unlock(&bond->curr_slave_lock); | |
4325 | ||
4326 | if (!slave) | |
4327 | goto out; | |
4328 | } else { | |
4329 | /* | |
4330 | * Concurrent TX may collide on rr_tx_counter; we accept | |
4331 | * that as being rare enough not to justify using an | |
4332 | * atomic op here. | |
4333 | */ | |
4334 | slave_no = bond->rr_tx_counter++ % bond->slave_cnt; | |
4335 | ||
4336 | bond_for_each_slave(bond, slave, i) { | |
4337 | slave_no--; | |
4338 | if (slave_no < 0) | |
4339 | break; | |
4340 | } | |
1da177e4 LT |
4341 | } |
4342 | ||
cf5f9044 | 4343 | start_at = slave; |
1da177e4 LT |
4344 | bond_for_each_slave_from(bond, slave, i, start_at) { |
4345 | if (IS_UP(slave->dev) && | |
4346 | (slave->link == BOND_LINK_UP) && | |
4347 | (slave->state == BOND_STATE_ACTIVE)) { | |
4348 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
1da177e4 LT |
4349 | break; |
4350 | } | |
4351 | } | |
4352 | ||
1da177e4 LT |
4353 | out: |
4354 | if (res) { | |
4355 | /* no suitable interface, frame not sent */ | |
4356 | dev_kfree_skb(skb); | |
4357 | } | |
4358 | read_unlock(&bond->lock); | |
ec634fe3 | 4359 | return NETDEV_TX_OK; |
1da177e4 LT |
4360 | } |
4361 | ||
075897ce | 4362 | |
1da177e4 LT |
4363 | /* |
4364 | * in active-backup mode, we know that bond->curr_active_slave is always valid if | |
4365 | * the bond has a usable interface. | |
4366 | */ | |
4367 | static int bond_xmit_activebackup(struct sk_buff *skb, struct net_device *bond_dev) | |
4368 | { | |
454d7c9b | 4369 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4370 | int res = 1; |
4371 | ||
1da177e4 LT |
4372 | read_lock(&bond->lock); |
4373 | read_lock(&bond->curr_slave_lock); | |
4374 | ||
3d632c3f | 4375 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4376 | goto out; |
1da177e4 | 4377 | |
075897ce JL |
4378 | if (!bond->curr_active_slave) |
4379 | goto out; | |
4380 | ||
075897ce JL |
4381 | res = bond_dev_queue_xmit(bond, skb, bond->curr_active_slave->dev); |
4382 | ||
1da177e4 | 4383 | out: |
3d632c3f | 4384 | if (res) |
1da177e4 LT |
4385 | /* no suitable interface, frame not sent */ |
4386 | dev_kfree_skb(skb); | |
3d632c3f | 4387 | |
1da177e4 LT |
4388 | read_unlock(&bond->curr_slave_lock); |
4389 | read_unlock(&bond->lock); | |
ec634fe3 | 4390 | return NETDEV_TX_OK; |
1da177e4 LT |
4391 | } |
4392 | ||
4393 | /* | |
169a3e66 JV |
4394 | * In bond_xmit_xor() , we determine the output device by using a pre- |
4395 | * determined xmit_hash_policy(), If the selected device is not enabled, | |
4396 | * find the next active slave. | |
1da177e4 LT |
4397 | */ |
4398 | static int bond_xmit_xor(struct sk_buff *skb, struct net_device *bond_dev) | |
4399 | { | |
454d7c9b | 4400 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4401 | struct slave *slave, *start_at; |
4402 | int slave_no; | |
4403 | int i; | |
4404 | int res = 1; | |
4405 | ||
4406 | read_lock(&bond->lock); | |
4407 | ||
3d632c3f | 4408 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4409 | goto out; |
1da177e4 | 4410 | |
a361c83c | 4411 | slave_no = bond->xmit_hash_policy(skb, bond->slave_cnt); |
1da177e4 LT |
4412 | |
4413 | bond_for_each_slave(bond, slave, i) { | |
4414 | slave_no--; | |
3d632c3f | 4415 | if (slave_no < 0) |
1da177e4 | 4416 | break; |
1da177e4 LT |
4417 | } |
4418 | ||
4419 | start_at = slave; | |
4420 | ||
4421 | bond_for_each_slave_from(bond, slave, i, start_at) { | |
4422 | if (IS_UP(slave->dev) && | |
4423 | (slave->link == BOND_LINK_UP) && | |
4424 | (slave->state == BOND_STATE_ACTIVE)) { | |
4425 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
4426 | break; | |
4427 | } | |
4428 | } | |
4429 | ||
4430 | out: | |
4431 | if (res) { | |
4432 | /* no suitable interface, frame not sent */ | |
4433 | dev_kfree_skb(skb); | |
4434 | } | |
4435 | read_unlock(&bond->lock); | |
ec634fe3 | 4436 | return NETDEV_TX_OK; |
1da177e4 LT |
4437 | } |
4438 | ||
4439 | /* | |
4440 | * in broadcast mode, we send everything to all usable interfaces. | |
4441 | */ | |
4442 | static int bond_xmit_broadcast(struct sk_buff *skb, struct net_device *bond_dev) | |
4443 | { | |
454d7c9b | 4444 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 LT |
4445 | struct slave *slave, *start_at; |
4446 | struct net_device *tx_dev = NULL; | |
4447 | int i; | |
4448 | int res = 1; | |
4449 | ||
4450 | read_lock(&bond->lock); | |
4451 | ||
3d632c3f | 4452 | if (!BOND_IS_OK(bond)) |
1da177e4 | 4453 | goto out; |
1da177e4 LT |
4454 | |
4455 | read_lock(&bond->curr_slave_lock); | |
4456 | start_at = bond->curr_active_slave; | |
4457 | read_unlock(&bond->curr_slave_lock); | |
4458 | ||
3d632c3f | 4459 | if (!start_at) |
1da177e4 | 4460 | goto out; |
1da177e4 LT |
4461 | |
4462 | bond_for_each_slave_from(bond, slave, i, start_at) { | |
4463 | if (IS_UP(slave->dev) && | |
4464 | (slave->link == BOND_LINK_UP) && | |
4465 | (slave->state == BOND_STATE_ACTIVE)) { | |
4466 | if (tx_dev) { | |
4467 | struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC); | |
4468 | if (!skb2) { | |
a4aee5c8 | 4469 | pr_err("%s: Error: bond_xmit_broadcast(): skb_clone() failed\n", |
4e0952c7 | 4470 | bond_dev->name); |
1da177e4 LT |
4471 | continue; |
4472 | } | |
4473 | ||
4474 | res = bond_dev_queue_xmit(bond, skb2, tx_dev); | |
4475 | if (res) { | |
4476 | dev_kfree_skb(skb2); | |
4477 | continue; | |
4478 | } | |
4479 | } | |
4480 | tx_dev = slave->dev; | |
4481 | } | |
4482 | } | |
4483 | ||
3d632c3f | 4484 | if (tx_dev) |
1da177e4 | 4485 | res = bond_dev_queue_xmit(bond, skb, tx_dev); |
1da177e4 LT |
4486 | |
4487 | out: | |
3d632c3f | 4488 | if (res) |
1da177e4 LT |
4489 | /* no suitable interface, frame not sent */ |
4490 | dev_kfree_skb(skb); | |
3d632c3f | 4491 | |
1da177e4 LT |
4492 | /* frame sent to all suitable interfaces */ |
4493 | read_unlock(&bond->lock); | |
ec634fe3 | 4494 | return NETDEV_TX_OK; |
1da177e4 LT |
4495 | } |
4496 | ||
4497 | /*------------------------- Device initialization ---------------------------*/ | |
4498 | ||
6f6652be JV |
4499 | static void bond_set_xmit_hash_policy(struct bonding *bond) |
4500 | { | |
4501 | switch (bond->params.xmit_policy) { | |
4502 | case BOND_XMIT_POLICY_LAYER23: | |
4503 | bond->xmit_hash_policy = bond_xmit_hash_policy_l23; | |
4504 | break; | |
4505 | case BOND_XMIT_POLICY_LAYER34: | |
4506 | bond->xmit_hash_policy = bond_xmit_hash_policy_l34; | |
4507 | break; | |
4508 | case BOND_XMIT_POLICY_LAYER2: | |
4509 | default: | |
4510 | bond->xmit_hash_policy = bond_xmit_hash_policy_l2; | |
4511 | break; | |
4512 | } | |
4513 | } | |
4514 | ||
bb1d9123 AG |
4515 | /* |
4516 | * Lookup the slave that corresponds to a qid | |
4517 | */ | |
4518 | static inline int bond_slave_override(struct bonding *bond, | |
4519 | struct sk_buff *skb) | |
4520 | { | |
4521 | int i, res = 1; | |
4522 | struct slave *slave = NULL; | |
4523 | struct slave *check_slave; | |
4524 | ||
4525 | read_lock(&bond->lock); | |
4526 | ||
4527 | if (!BOND_IS_OK(bond) || !skb->queue_mapping) | |
4528 | goto out; | |
4529 | ||
4530 | /* Find out if any slaves have the same mapping as this skb. */ | |
4531 | bond_for_each_slave(bond, check_slave, i) { | |
4532 | if (check_slave->queue_id == skb->queue_mapping) { | |
4533 | slave = check_slave; | |
4534 | break; | |
4535 | } | |
4536 | } | |
4537 | ||
4538 | /* If the slave isn't UP, use default transmit policy. */ | |
4539 | if (slave && slave->queue_id && IS_UP(slave->dev) && | |
4540 | (slave->link == BOND_LINK_UP)) { | |
4541 | res = bond_dev_queue_xmit(bond, skb, slave->dev); | |
4542 | } | |
4543 | ||
4544 | out: | |
4545 | read_unlock(&bond->lock); | |
4546 | return res; | |
4547 | } | |
4548 | ||
4549 | static u16 bond_select_queue(struct net_device *dev, struct sk_buff *skb) | |
4550 | { | |
4551 | /* | |
4552 | * This helper function exists to help dev_pick_tx get the correct | |
4553 | * destination queue. Using a helper function skips the a call to | |
4554 | * skb_tx_hash and will put the skbs in the queue we expect on their | |
4555 | * way down to the bonding driver. | |
4556 | */ | |
4557 | return skb->queue_mapping; | |
4558 | } | |
4559 | ||
424efe9c | 4560 | static netdev_tx_t bond_start_xmit(struct sk_buff *skb, struct net_device *dev) |
00829823 | 4561 | { |
bb1d9123 AG |
4562 | struct bonding *bond = netdev_priv(dev); |
4563 | ||
4564 | if (TX_QUEUE_OVERRIDE(bond->params.mode)) { | |
4565 | if (!bond_slave_override(bond, skb)) | |
4566 | return NETDEV_TX_OK; | |
4567 | } | |
00829823 SH |
4568 | |
4569 | switch (bond->params.mode) { | |
4570 | case BOND_MODE_ROUNDROBIN: | |
4571 | return bond_xmit_roundrobin(skb, dev); | |
4572 | case BOND_MODE_ACTIVEBACKUP: | |
4573 | return bond_xmit_activebackup(skb, dev); | |
4574 | case BOND_MODE_XOR: | |
4575 | return bond_xmit_xor(skb, dev); | |
4576 | case BOND_MODE_BROADCAST: | |
4577 | return bond_xmit_broadcast(skb, dev); | |
4578 | case BOND_MODE_8023AD: | |
4579 | return bond_3ad_xmit_xor(skb, dev); | |
4580 | case BOND_MODE_ALB: | |
4581 | case BOND_MODE_TLB: | |
4582 | return bond_alb_xmit(skb, dev); | |
4583 | default: | |
4584 | /* Should never happen, mode already checked */ | |
a4aee5c8 JP |
4585 | pr_err("%s: Error: Unknown bonding mode %d\n", |
4586 | dev->name, bond->params.mode); | |
00829823 SH |
4587 | WARN_ON_ONCE(1); |
4588 | dev_kfree_skb(skb); | |
4589 | return NETDEV_TX_OK; | |
4590 | } | |
4591 | } | |
4592 | ||
4593 | ||
1da177e4 LT |
4594 | /* |
4595 | * set bond mode specific net device operations | |
4596 | */ | |
a77b5325 | 4597 | void bond_set_mode_ops(struct bonding *bond, int mode) |
1da177e4 | 4598 | { |
169a3e66 JV |
4599 | struct net_device *bond_dev = bond->dev; |
4600 | ||
1da177e4 LT |
4601 | switch (mode) { |
4602 | case BOND_MODE_ROUNDROBIN: | |
1da177e4 LT |
4603 | break; |
4604 | case BOND_MODE_ACTIVEBACKUP: | |
1da177e4 LT |
4605 | break; |
4606 | case BOND_MODE_XOR: | |
6f6652be | 4607 | bond_set_xmit_hash_policy(bond); |
1da177e4 LT |
4608 | break; |
4609 | case BOND_MODE_BROADCAST: | |
1da177e4 LT |
4610 | break; |
4611 | case BOND_MODE_8023AD: | |
8f903c70 | 4612 | bond_set_master_3ad_flags(bond); |
6f6652be | 4613 | bond_set_xmit_hash_policy(bond); |
1da177e4 | 4614 | break; |
1da177e4 | 4615 | case BOND_MODE_ALB: |
8f903c70 JV |
4616 | bond_set_master_alb_flags(bond); |
4617 | /* FALLTHRU */ | |
4618 | case BOND_MODE_TLB: | |
1da177e4 LT |
4619 | break; |
4620 | default: | |
4621 | /* Should never happen, mode already checked */ | |
a4aee5c8 JP |
4622 | pr_err("%s: Error: Unknown bonding mode %d\n", |
4623 | bond_dev->name, mode); | |
1da177e4 LT |
4624 | break; |
4625 | } | |
4626 | } | |
4627 | ||
217df670 JV |
4628 | static void bond_ethtool_get_drvinfo(struct net_device *bond_dev, |
4629 | struct ethtool_drvinfo *drvinfo) | |
4630 | { | |
4631 | strncpy(drvinfo->driver, DRV_NAME, 32); | |
4632 | strncpy(drvinfo->version, DRV_VERSION, 32); | |
4633 | snprintf(drvinfo->fw_version, 32, "%d", BOND_ABI_VERSION); | |
4634 | } | |
4635 | ||
7282d491 | 4636 | static const struct ethtool_ops bond_ethtool_ops = { |
217df670 | 4637 | .get_drvinfo = bond_ethtool_get_drvinfo, |
fa53ebac SH |
4638 | .get_link = ethtool_op_get_link, |
4639 | .get_tx_csum = ethtool_op_get_tx_csum, | |
4640 | .get_sg = ethtool_op_get_sg, | |
4641 | .get_tso = ethtool_op_get_tso, | |
4642 | .get_ufo = ethtool_op_get_ufo, | |
4643 | .get_flags = ethtool_op_get_flags, | |
8531c5ff AK |
4644 | }; |
4645 | ||
eb7cc59a | 4646 | static const struct net_device_ops bond_netdev_ops = { |
181470fc | 4647 | .ndo_init = bond_init, |
9e71626c | 4648 | .ndo_uninit = bond_uninit, |
eb7cc59a SH |
4649 | .ndo_open = bond_open, |
4650 | .ndo_stop = bond_close, | |
00829823 | 4651 | .ndo_start_xmit = bond_start_xmit, |
bb1d9123 | 4652 | .ndo_select_queue = bond_select_queue, |
be1f3c2c | 4653 | .ndo_get_stats64 = bond_get_stats, |
eb7cc59a SH |
4654 | .ndo_do_ioctl = bond_do_ioctl, |
4655 | .ndo_set_multicast_list = bond_set_multicast_list, | |
4656 | .ndo_change_mtu = bond_change_mtu, | |
eb7cc59a | 4657 | .ndo_set_mac_address = bond_set_mac_address, |
00829823 | 4658 | .ndo_neigh_setup = bond_neigh_setup, |
eb7cc59a SH |
4659 | .ndo_vlan_rx_register = bond_vlan_rx_register, |
4660 | .ndo_vlan_rx_add_vid = bond_vlan_rx_add_vid, | |
4661 | .ndo_vlan_rx_kill_vid = bond_vlan_rx_kill_vid, | |
f6dc31a8 WC |
4662 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4663 | .ndo_netpoll_cleanup = bond_netpoll_cleanup, | |
4664 | .ndo_poll_controller = bond_poll_controller, | |
4665 | #endif | |
eb7cc59a SH |
4666 | }; |
4667 | ||
9e2e61fb AW |
4668 | static void bond_destructor(struct net_device *bond_dev) |
4669 | { | |
4670 | struct bonding *bond = netdev_priv(bond_dev); | |
4671 | if (bond->wq) | |
4672 | destroy_workqueue(bond->wq); | |
4673 | free_netdev(bond_dev); | |
4674 | } | |
4675 | ||
181470fc | 4676 | static void bond_setup(struct net_device *bond_dev) |
1da177e4 | 4677 | { |
454d7c9b | 4678 | struct bonding *bond = netdev_priv(bond_dev); |
1da177e4 | 4679 | |
1da177e4 LT |
4680 | /* initialize rwlocks */ |
4681 | rwlock_init(&bond->lock); | |
4682 | rwlock_init(&bond->curr_slave_lock); | |
4683 | ||
d2991f75 | 4684 | bond->params = bonding_defaults; |
1da177e4 LT |
4685 | |
4686 | /* Initialize pointers */ | |
1da177e4 LT |
4687 | bond->dev = bond_dev; |
4688 | INIT_LIST_HEAD(&bond->vlan_list); | |
4689 | ||
4690 | /* Initialize the device entry points */ | |
181470fc | 4691 | ether_setup(bond_dev); |
eb7cc59a | 4692 | bond_dev->netdev_ops = &bond_netdev_ops; |
8531c5ff | 4693 | bond_dev->ethtool_ops = &bond_ethtool_ops; |
169a3e66 | 4694 | bond_set_mode_ops(bond, bond->params.mode); |
1da177e4 | 4695 | |
9e2e61fb | 4696 | bond_dev->destructor = bond_destructor; |
1da177e4 LT |
4697 | |
4698 | /* Initialize the device options */ | |
4699 | bond_dev->tx_queue_len = 0; | |
4700 | bond_dev->flags |= IFF_MASTER|IFF_MULTICAST; | |
0b680e75 | 4701 | bond_dev->priv_flags |= IFF_BONDING; |
181470fc SH |
4702 | bond_dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; |
4703 | ||
6cf3f41e JV |
4704 | if (bond->params.arp_interval) |
4705 | bond_dev->priv_flags |= IFF_MASTER_ARPMON; | |
1da177e4 LT |
4706 | |
4707 | /* At first, we block adding VLANs. That's the only way to | |
4708 | * prevent problems that occur when adding VLANs over an | |
4709 | * empty bond. The block will be removed once non-challenged | |
4710 | * slaves are enslaved. | |
4711 | */ | |
4712 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; | |
4713 | ||
932ff279 | 4714 | /* don't acquire bond device's netif_tx_lock when |
1da177e4 LT |
4715 | * transmitting */ |
4716 | bond_dev->features |= NETIF_F_LLTX; | |
4717 | ||
4718 | /* By default, we declare the bond to be fully | |
4719 | * VLAN hardware accelerated capable. Special | |
4720 | * care is taken in the various xmit functions | |
4721 | * when there are slaves that are not hw accel | |
4722 | * capable | |
4723 | */ | |
1da177e4 LT |
4724 | bond_dev->features |= (NETIF_F_HW_VLAN_TX | |
4725 | NETIF_F_HW_VLAN_RX | | |
4726 | NETIF_F_HW_VLAN_FILTER); | |
4727 | ||
e6599c2e ED |
4728 | /* By default, we enable GRO on bonding devices. |
4729 | * Actual support requires lowlevel drivers are GRO ready. | |
4730 | */ | |
4731 | bond_dev->features |= NETIF_F_GRO; | |
1da177e4 LT |
4732 | } |
4733 | ||
fdaea7a9 JV |
4734 | static void bond_work_cancel_all(struct bonding *bond) |
4735 | { | |
4736 | write_lock_bh(&bond->lock); | |
4737 | bond->kill_timers = 1; | |
4738 | write_unlock_bh(&bond->lock); | |
4739 | ||
4740 | if (bond->params.miimon && delayed_work_pending(&bond->mii_work)) | |
4741 | cancel_delayed_work(&bond->mii_work); | |
4742 | ||
4743 | if (bond->params.arp_interval && delayed_work_pending(&bond->arp_work)) | |
4744 | cancel_delayed_work(&bond->arp_work); | |
4745 | ||
4746 | if (bond->params.mode == BOND_MODE_ALB && | |
4747 | delayed_work_pending(&bond->alb_work)) | |
4748 | cancel_delayed_work(&bond->alb_work); | |
4749 | ||
4750 | if (bond->params.mode == BOND_MODE_8023AD && | |
4751 | delayed_work_pending(&bond->ad_work)) | |
4752 | cancel_delayed_work(&bond->ad_work); | |
5a37e8ca FL |
4753 | |
4754 | if (delayed_work_pending(&bond->mcast_work)) | |
4755 | cancel_delayed_work(&bond->mcast_work); | |
fdaea7a9 JV |
4756 | } |
4757 | ||
c67dfb29 EB |
4758 | /* |
4759 | * Destroy a bonding device. | |
4760 | * Must be under rtnl_lock when this function is called. | |
4761 | */ | |
4762 | static void bond_uninit(struct net_device *bond_dev) | |
a434e43f | 4763 | { |
454d7c9b | 4764 | struct bonding *bond = netdev_priv(bond_dev); |
f35188fa | 4765 | struct vlan_entry *vlan, *tmp; |
a434e43f | 4766 | |
f6dc31a8 WC |
4767 | bond_netpoll_cleanup(bond_dev); |
4768 | ||
c67dfb29 EB |
4769 | /* Release the bonded slaves */ |
4770 | bond_release_all(bond_dev); | |
4771 | ||
a434e43f JV |
4772 | list_del(&bond->bond_list); |
4773 | ||
4774 | bond_work_cancel_all(bond); | |
4775 | ||
a434e43f | 4776 | bond_remove_proc_entry(bond); |
c67dfb29 | 4777 | |
22bedad3 | 4778 | __hw_addr_flush(&bond->mc_list); |
f35188fa JV |
4779 | |
4780 | list_for_each_entry_safe(vlan, tmp, &bond->vlan_list, vlan_list) { | |
4781 | list_del(&vlan->vlan_list); | |
4782 | kfree(vlan); | |
4783 | } | |
a434e43f JV |
4784 | } |
4785 | ||
1da177e4 LT |
4786 | /*------------------------- Module initialization ---------------------------*/ |
4787 | ||
4788 | /* | |
4789 | * Convert string input module parms. Accept either the | |
ece95f7f JV |
4790 | * number of the mode or its string name. A bit complicated because |
4791 | * some mode names are substrings of other names, and calls from sysfs | |
4792 | * may have whitespace in the name (trailing newlines, for example). | |
1da177e4 | 4793 | */ |
325dcf7a | 4794 | int bond_parse_parm(const char *buf, const struct bond_parm_tbl *tbl) |
1da177e4 | 4795 | { |
54b87323 | 4796 | int modeint = -1, i, rv; |
a42e534f | 4797 | char *p, modestr[BOND_MAX_MODENAME_LEN + 1] = { 0, }; |
ece95f7f | 4798 | |
a42e534f JV |
4799 | for (p = (char *)buf; *p; p++) |
4800 | if (!(isdigit(*p) || isspace(*p))) | |
4801 | break; | |
4802 | ||
4803 | if (*p) | |
ece95f7f | 4804 | rv = sscanf(buf, "%20s", modestr); |
a42e534f | 4805 | else |
54b87323 | 4806 | rv = sscanf(buf, "%d", &modeint); |
a42e534f JV |
4807 | |
4808 | if (!rv) | |
4809 | return -1; | |
1da177e4 LT |
4810 | |
4811 | for (i = 0; tbl[i].modename; i++) { | |
54b87323 | 4812 | if (modeint == tbl[i].mode) |
ece95f7f JV |
4813 | return tbl[i].mode; |
4814 | if (strcmp(modestr, tbl[i].modename) == 0) | |
1da177e4 | 4815 | return tbl[i].mode; |
1da177e4 LT |
4816 | } |
4817 | ||
4818 | return -1; | |
4819 | } | |
4820 | ||
4821 | static int bond_check_params(struct bond_params *params) | |
4822 | { | |
a549952a | 4823 | int arp_validate_value, fail_over_mac_value, primary_reselect_value; |
f5b2b966 | 4824 | |
1da177e4 LT |
4825 | /* |
4826 | * Convert string parameters. | |
4827 | */ | |
4828 | if (mode) { | |
4829 | bond_mode = bond_parse_parm(mode, bond_mode_tbl); | |
4830 | if (bond_mode == -1) { | |
a4aee5c8 | 4831 | pr_err("Error: Invalid bonding mode \"%s\"\n", |
1da177e4 LT |
4832 | mode == NULL ? "NULL" : mode); |
4833 | return -EINVAL; | |
4834 | } | |
4835 | } | |
4836 | ||
169a3e66 JV |
4837 | if (xmit_hash_policy) { |
4838 | if ((bond_mode != BOND_MODE_XOR) && | |
4839 | (bond_mode != BOND_MODE_8023AD)) { | |
a4aee5c8 | 4840 | pr_info("xmit_hash_policy param is irrelevant in mode %s\n", |
169a3e66 JV |
4841 | bond_mode_name(bond_mode)); |
4842 | } else { | |
4843 | xmit_hashtype = bond_parse_parm(xmit_hash_policy, | |
4844 | xmit_hashtype_tbl); | |
4845 | if (xmit_hashtype == -1) { | |
a4aee5c8 | 4846 | pr_err("Error: Invalid xmit_hash_policy \"%s\"\n", |
3d632c3f | 4847 | xmit_hash_policy == NULL ? "NULL" : |
169a3e66 JV |
4848 | xmit_hash_policy); |
4849 | return -EINVAL; | |
4850 | } | |
4851 | } | |
4852 | } | |
4853 | ||
1da177e4 LT |
4854 | if (lacp_rate) { |
4855 | if (bond_mode != BOND_MODE_8023AD) { | |
a4aee5c8 JP |
4856 | pr_info("lacp_rate param is irrelevant in mode %s\n", |
4857 | bond_mode_name(bond_mode)); | |
1da177e4 LT |
4858 | } else { |
4859 | lacp_fast = bond_parse_parm(lacp_rate, bond_lacp_tbl); | |
4860 | if (lacp_fast == -1) { | |
a4aee5c8 | 4861 | pr_err("Error: Invalid lacp rate \"%s\"\n", |
1da177e4 LT |
4862 | lacp_rate == NULL ? "NULL" : lacp_rate); |
4863 | return -EINVAL; | |
4864 | } | |
4865 | } | |
4866 | } | |
4867 | ||
fd989c83 JV |
4868 | if (ad_select) { |
4869 | params->ad_select = bond_parse_parm(ad_select, ad_select_tbl); | |
4870 | if (params->ad_select == -1) { | |
a4aee5c8 | 4871 | pr_err("Error: Invalid ad_select \"%s\"\n", |
fd989c83 JV |
4872 | ad_select == NULL ? "NULL" : ad_select); |
4873 | return -EINVAL; | |
4874 | } | |
4875 | ||
4876 | if (bond_mode != BOND_MODE_8023AD) { | |
a4aee5c8 | 4877 | pr_warning("ad_select param only affects 802.3ad mode\n"); |
fd989c83 JV |
4878 | } |
4879 | } else { | |
4880 | params->ad_select = BOND_AD_STABLE; | |
4881 | } | |
4882 | ||
f5841306 | 4883 | if (max_bonds < 0) { |
a4aee5c8 JP |
4884 | pr_warning("Warning: max_bonds (%d) not in range %d-%d, so it was reset to BOND_DEFAULT_MAX_BONDS (%d)\n", |
4885 | max_bonds, 0, INT_MAX, BOND_DEFAULT_MAX_BONDS); | |
1da177e4 LT |
4886 | max_bonds = BOND_DEFAULT_MAX_BONDS; |
4887 | } | |
4888 | ||
4889 | if (miimon < 0) { | |
a4aee5c8 JP |
4890 | pr_warning("Warning: miimon module parameter (%d), not in range 0-%d, so it was reset to %d\n", |
4891 | miimon, INT_MAX, BOND_LINK_MON_INTERV); | |
1da177e4 LT |
4892 | miimon = BOND_LINK_MON_INTERV; |
4893 | } | |
4894 | ||
4895 | if (updelay < 0) { | |
a4aee5c8 JP |
4896 | pr_warning("Warning: updelay module parameter (%d), not in range 0-%d, so it was reset to 0\n", |
4897 | updelay, INT_MAX); | |
1da177e4 LT |
4898 | updelay = 0; |
4899 | } | |
4900 | ||
4901 | if (downdelay < 0) { | |
a4aee5c8 JP |
4902 | pr_warning("Warning: downdelay module parameter (%d), not in range 0-%d, so it was reset to 0\n", |
4903 | downdelay, INT_MAX); | |
1da177e4 LT |
4904 | downdelay = 0; |
4905 | } | |
4906 | ||
4907 | if ((use_carrier != 0) && (use_carrier != 1)) { | |
a4aee5c8 JP |
4908 | pr_warning("Warning: use_carrier module parameter (%d), not of valid value (0/1), so it was set to 1\n", |
4909 | use_carrier); | |
1da177e4 LT |
4910 | use_carrier = 1; |
4911 | } | |
4912 | ||
7893b249 | 4913 | if (num_grat_arp < 0 || num_grat_arp > 255) { |
2381a55c | 4914 | pr_warning("Warning: num_grat_arp (%d) not in range 0-255 so it was reset to 1\n", |
a4aee5c8 | 4915 | num_grat_arp); |
7893b249 MS |
4916 | num_grat_arp = 1; |
4917 | } | |
4918 | ||
305d552a | 4919 | if (num_unsol_na < 0 || num_unsol_na > 255) { |
2381a55c | 4920 | pr_warning("Warning: num_unsol_na (%d) not in range 0-255 so it was reset to 1\n", |
a4aee5c8 | 4921 | num_unsol_na); |
305d552a BH |
4922 | num_unsol_na = 1; |
4923 | } | |
4924 | ||
1da177e4 LT |
4925 | /* reset values for 802.3ad */ |
4926 | if (bond_mode == BOND_MODE_8023AD) { | |
4927 | if (!miimon) { | |
a4aee5c8 | 4928 | 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 | 4929 | pr_warning("Forcing miimon to 100msec\n"); |
1da177e4 LT |
4930 | miimon = 100; |
4931 | } | |
4932 | } | |
4933 | ||
bb1d9123 AG |
4934 | if (tx_queues < 1 || tx_queues > 255) { |
4935 | pr_warning("Warning: tx_queues (%d) should be between " | |
4936 | "1 and 255, resetting to %d\n", | |
4937 | tx_queues, BOND_DEFAULT_TX_QUEUES); | |
4938 | tx_queues = BOND_DEFAULT_TX_QUEUES; | |
4939 | } | |
4940 | ||
ebd8e497 AG |
4941 | if ((all_slaves_active != 0) && (all_slaves_active != 1)) { |
4942 | pr_warning("Warning: all_slaves_active module parameter (%d), " | |
4943 | "not of valid value (0/1), so it was set to " | |
4944 | "0\n", all_slaves_active); | |
4945 | all_slaves_active = 0; | |
4946 | } | |
4947 | ||
c2952c31 FL |
4948 | if (resend_igmp < 0 || resend_igmp > 255) { |
4949 | pr_warning("Warning: resend_igmp (%d) should be between " | |
4950 | "0 and 255, resetting to %d\n", | |
4951 | resend_igmp, BOND_DEFAULT_RESEND_IGMP); | |
4952 | resend_igmp = BOND_DEFAULT_RESEND_IGMP; | |
4953 | } | |
4954 | ||
1da177e4 LT |
4955 | /* reset values for TLB/ALB */ |
4956 | if ((bond_mode == BOND_MODE_TLB) || | |
4957 | (bond_mode == BOND_MODE_ALB)) { | |
4958 | if (!miimon) { | |
a4aee5c8 | 4959 | 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 | 4960 | pr_warning("Forcing miimon to 100msec\n"); |
1da177e4 LT |
4961 | miimon = 100; |
4962 | } | |
4963 | } | |
4964 | ||
4965 | if (bond_mode == BOND_MODE_ALB) { | |
a4aee5c8 JP |
4966 | 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", |
4967 | updelay); | |
1da177e4 LT |
4968 | } |
4969 | ||
4970 | if (!miimon) { | |
4971 | if (updelay || downdelay) { | |
4972 | /* just warn the user the up/down delay will have | |
4973 | * no effect since miimon is zero... | |
4974 | */ | |
a4aee5c8 JP |
4975 | 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", |
4976 | updelay, downdelay); | |
1da177e4 LT |
4977 | } |
4978 | } else { | |
4979 | /* don't allow arp monitoring */ | |
4980 | if (arp_interval) { | |
a4aee5c8 JP |
4981 | pr_warning("Warning: miimon (%d) and arp_interval (%d) can't be used simultaneously, disabling ARP monitoring\n", |
4982 | miimon, arp_interval); | |
1da177e4 LT |
4983 | arp_interval = 0; |
4984 | } | |
4985 | ||
4986 | if ((updelay % miimon) != 0) { | |
a4aee5c8 JP |
4987 | pr_warning("Warning: updelay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", |
4988 | updelay, miimon, | |
4989 | (updelay / miimon) * miimon); | |
1da177e4 LT |
4990 | } |
4991 | ||
4992 | updelay /= miimon; | |
4993 | ||
4994 | if ((downdelay % miimon) != 0) { | |
a4aee5c8 JP |
4995 | pr_warning("Warning: downdelay (%d) is not a multiple of miimon (%d), downdelay rounded to %d ms\n", |
4996 | downdelay, miimon, | |
4997 | (downdelay / miimon) * miimon); | |
1da177e4 LT |
4998 | } |
4999 | ||
5000 | downdelay /= miimon; | |
5001 | } | |
5002 | ||
5003 | if (arp_interval < 0) { | |
a4aee5c8 JP |
5004 | pr_warning("Warning: arp_interval module parameter (%d) , not in range 0-%d, so it was reset to %d\n", |
5005 | arp_interval, INT_MAX, BOND_LINK_ARP_INTERV); | |
1da177e4 LT |
5006 | arp_interval = BOND_LINK_ARP_INTERV; |
5007 | } | |
5008 | ||
5009 | for (arp_ip_count = 0; | |
5010 | (arp_ip_count < BOND_MAX_ARP_TARGETS) && arp_ip_target[arp_ip_count]; | |
5011 | arp_ip_count++) { | |
5012 | /* not complete check, but should be good enough to | |
5013 | catch mistakes */ | |
5014 | if (!isdigit(arp_ip_target[arp_ip_count][0])) { | |
a4aee5c8 JP |
5015 | pr_warning("Warning: bad arp_ip_target module parameter (%s), ARP monitoring will not be performed\n", |
5016 | arp_ip_target[arp_ip_count]); | |
1da177e4 LT |
5017 | arp_interval = 0; |
5018 | } else { | |
d3bb52b0 | 5019 | __be32 ip = in_aton(arp_ip_target[arp_ip_count]); |
1da177e4 LT |
5020 | arp_target[arp_ip_count] = ip; |
5021 | } | |
5022 | } | |
5023 | ||
5024 | if (arp_interval && !arp_ip_count) { | |
5025 | /* don't allow arping if no arp_ip_target given... */ | |
a4aee5c8 JP |
5026 | pr_warning("Warning: arp_interval module parameter (%d) specified without providing an arp_ip_target parameter, arp_interval was reset to 0\n", |
5027 | arp_interval); | |
1da177e4 LT |
5028 | arp_interval = 0; |
5029 | } | |
5030 | ||
f5b2b966 JV |
5031 | if (arp_validate) { |
5032 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) { | |
a4aee5c8 | 5033 | pr_err("arp_validate only supported in active-backup mode\n"); |
f5b2b966 JV |
5034 | return -EINVAL; |
5035 | } | |
5036 | if (!arp_interval) { | |
a4aee5c8 | 5037 | pr_err("arp_validate requires arp_interval\n"); |
f5b2b966 JV |
5038 | return -EINVAL; |
5039 | } | |
5040 | ||
5041 | arp_validate_value = bond_parse_parm(arp_validate, | |
5042 | arp_validate_tbl); | |
5043 | if (arp_validate_value == -1) { | |
a4aee5c8 | 5044 | pr_err("Error: invalid arp_validate \"%s\"\n", |
f5b2b966 JV |
5045 | arp_validate == NULL ? "NULL" : arp_validate); |
5046 | return -EINVAL; | |
5047 | } | |
5048 | } else | |
5049 | arp_validate_value = 0; | |
5050 | ||
1da177e4 | 5051 | if (miimon) { |
a4aee5c8 | 5052 | pr_info("MII link monitoring set to %d ms\n", miimon); |
1da177e4 LT |
5053 | } else if (arp_interval) { |
5054 | int i; | |
5055 | ||
a4aee5c8 JP |
5056 | pr_info("ARP monitoring set to %d ms, validate %s, with %d target(s):", |
5057 | arp_interval, | |
5058 | arp_validate_tbl[arp_validate_value].modename, | |
5059 | arp_ip_count); | |
1da177e4 LT |
5060 | |
5061 | for (i = 0; i < arp_ip_count; i++) | |
e5e2a8fd | 5062 | pr_info(" %s", arp_ip_target[i]); |
1da177e4 | 5063 | |
e5e2a8fd | 5064 | pr_info("\n"); |
1da177e4 | 5065 | |
b8a9787e | 5066 | } else if (max_bonds) { |
1da177e4 LT |
5067 | /* miimon and arp_interval not set, we need one so things |
5068 | * work as expected, see bonding.txt for details | |
5069 | */ | |
a4aee5c8 | 5070 | 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 |
5071 | } |
5072 | ||
5073 | if (primary && !USES_PRIMARY(bond_mode)) { | |
5074 | /* currently, using a primary only makes sense | |
5075 | * in active backup, TLB or ALB modes | |
5076 | */ | |
a4aee5c8 JP |
5077 | pr_warning("Warning: %s primary device specified but has no effect in %s mode\n", |
5078 | primary, bond_mode_name(bond_mode)); | |
1da177e4 LT |
5079 | primary = NULL; |
5080 | } | |
5081 | ||
a549952a JP |
5082 | if (primary && primary_reselect) { |
5083 | primary_reselect_value = bond_parse_parm(primary_reselect, | |
5084 | pri_reselect_tbl); | |
5085 | if (primary_reselect_value == -1) { | |
a4aee5c8 | 5086 | pr_err("Error: Invalid primary_reselect \"%s\"\n", |
a549952a JP |
5087 | primary_reselect == |
5088 | NULL ? "NULL" : primary_reselect); | |
5089 | return -EINVAL; | |
5090 | } | |
5091 | } else { | |
5092 | primary_reselect_value = BOND_PRI_RESELECT_ALWAYS; | |
5093 | } | |
5094 | ||
3915c1e8 JV |
5095 | if (fail_over_mac) { |
5096 | fail_over_mac_value = bond_parse_parm(fail_over_mac, | |
5097 | fail_over_mac_tbl); | |
5098 | if (fail_over_mac_value == -1) { | |
a4aee5c8 | 5099 | pr_err("Error: invalid fail_over_mac \"%s\"\n", |
3915c1e8 JV |
5100 | arp_validate == NULL ? "NULL" : arp_validate); |
5101 | return -EINVAL; | |
5102 | } | |
5103 | ||
5104 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) | |
a4aee5c8 | 5105 | pr_warning("Warning: fail_over_mac only affects active-backup mode.\n"); |
3915c1e8 JV |
5106 | } else { |
5107 | fail_over_mac_value = BOND_FOM_NONE; | |
5108 | } | |
dd957c57 | 5109 | |
1da177e4 LT |
5110 | /* fill params struct with the proper values */ |
5111 | params->mode = bond_mode; | |
169a3e66 | 5112 | params->xmit_policy = xmit_hashtype; |
1da177e4 | 5113 | params->miimon = miimon; |
7893b249 | 5114 | params->num_grat_arp = num_grat_arp; |
305d552a | 5115 | params->num_unsol_na = num_unsol_na; |
1da177e4 | 5116 | params->arp_interval = arp_interval; |
f5b2b966 | 5117 | params->arp_validate = arp_validate_value; |
1da177e4 LT |
5118 | params->updelay = updelay; |
5119 | params->downdelay = downdelay; | |
5120 | params->use_carrier = use_carrier; | |
5121 | params->lacp_fast = lacp_fast; | |
5122 | params->primary[0] = 0; | |
a549952a | 5123 | params->primary_reselect = primary_reselect_value; |
3915c1e8 | 5124 | params->fail_over_mac = fail_over_mac_value; |
bb1d9123 | 5125 | params->tx_queues = tx_queues; |
ebd8e497 | 5126 | params->all_slaves_active = all_slaves_active; |
c2952c31 | 5127 | params->resend_igmp = resend_igmp; |
1da177e4 LT |
5128 | |
5129 | if (primary) { | |
5130 | strncpy(params->primary, primary, IFNAMSIZ); | |
5131 | params->primary[IFNAMSIZ - 1] = 0; | |
5132 | } | |
5133 | ||
5134 | memcpy(params->arp_targets, arp_target, sizeof(arp_target)); | |
5135 | ||
5136 | return 0; | |
5137 | } | |
5138 | ||
0daa2303 | 5139 | static struct lock_class_key bonding_netdev_xmit_lock_key; |
cf508b12 | 5140 | static struct lock_class_key bonding_netdev_addr_lock_key; |
0daa2303 | 5141 | |
e8a0464c DM |
5142 | static void bond_set_lockdep_class_one(struct net_device *dev, |
5143 | struct netdev_queue *txq, | |
5144 | void *_unused) | |
c773e847 DM |
5145 | { |
5146 | lockdep_set_class(&txq->_xmit_lock, | |
5147 | &bonding_netdev_xmit_lock_key); | |
5148 | } | |
5149 | ||
5150 | static void bond_set_lockdep_class(struct net_device *dev) | |
5151 | { | |
cf508b12 DM |
5152 | lockdep_set_class(&dev->addr_list_lock, |
5153 | &bonding_netdev_addr_lock_key); | |
e8a0464c | 5154 | netdev_for_each_tx_queue(dev, bond_set_lockdep_class_one, NULL); |
c773e847 DM |
5155 | } |
5156 | ||
181470fc SH |
5157 | /* |
5158 | * Called from registration process | |
5159 | */ | |
5160 | static int bond_init(struct net_device *bond_dev) | |
5161 | { | |
5162 | struct bonding *bond = netdev_priv(bond_dev); | |
ec87fd3b | 5163 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); |
181470fc SH |
5164 | |
5165 | pr_debug("Begin bond_init for %s\n", bond_dev->name); | |
5166 | ||
5167 | bond->wq = create_singlethread_workqueue(bond_dev->name); | |
5168 | if (!bond->wq) | |
5169 | return -ENOMEM; | |
5170 | ||
5171 | bond_set_lockdep_class(bond_dev); | |
5172 | ||
5173 | netif_carrier_off(bond_dev); | |
5174 | ||
5175 | bond_create_proc_entry(bond); | |
ec87fd3b | 5176 | list_add_tail(&bond->bond_list, &bn->dev_list); |
181470fc | 5177 | |
6151b3d4 | 5178 | bond_prepare_sysfs_group(bond); |
22bedad3 JP |
5179 | |
5180 | __hw_addr_init(&bond->mc_list); | |
181470fc SH |
5181 | return 0; |
5182 | } | |
5183 | ||
88ead977 EB |
5184 | static int bond_validate(struct nlattr *tb[], struct nlattr *data[]) |
5185 | { | |
5186 | if (tb[IFLA_ADDRESS]) { | |
5187 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
5188 | return -EINVAL; | |
5189 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
5190 | return -EADDRNOTAVAIL; | |
5191 | } | |
5192 | return 0; | |
5193 | } | |
5194 | ||
5195 | static struct rtnl_link_ops bond_link_ops __read_mostly = { | |
5196 | .kind = "bond", | |
6639104b | 5197 | .priv_size = sizeof(struct bonding), |
88ead977 EB |
5198 | .setup = bond_setup, |
5199 | .validate = bond_validate, | |
5200 | }; | |
5201 | ||
dfe60397 | 5202 | /* Create a new bond based on the specified name and bonding parameters. |
e4b91c48 | 5203 | * If name is NULL, obtain a suitable "bond%d" name for us. |
dfe60397 MW |
5204 | * Caller must NOT hold rtnl_lock; we need to release it here before we |
5205 | * set up our sysfs entries. | |
5206 | */ | |
ec87fd3b | 5207 | int bond_create(struct net *net, const char *name) |
dfe60397 MW |
5208 | { |
5209 | struct net_device *bond_dev; | |
5210 | int res; | |
5211 | ||
5212 | rtnl_lock(); | |
027ea041 | 5213 | |
bb1d9123 AG |
5214 | bond_dev = alloc_netdev_mq(sizeof(struct bonding), name ? name : "", |
5215 | bond_setup, tx_queues); | |
dfe60397 | 5216 | if (!bond_dev) { |
a4aee5c8 | 5217 | pr_err("%s: eek! can't alloc netdev!\n", name); |
9e2e61fb AW |
5218 | rtnl_unlock(); |
5219 | return -ENOMEM; | |
dfe60397 MW |
5220 | } |
5221 | ||
ec87fd3b | 5222 | dev_net_set(bond_dev, net); |
88ead977 EB |
5223 | bond_dev->rtnl_link_ops = &bond_link_ops; |
5224 | ||
e4b91c48 JV |
5225 | if (!name) { |
5226 | res = dev_alloc_name(bond_dev, "bond%d"); | |
5227 | if (res < 0) | |
9e2e61fb | 5228 | goto out; |
27e6f065 NH |
5229 | } else { |
5230 | /* | |
5231 | * If we're given a name to register | |
5232 | * we need to ensure that its not already | |
5233 | * registered | |
5234 | */ | |
5235 | res = -EEXIST; | |
5236 | if (__dev_get_by_name(net, name) != NULL) | |
5237 | goto out; | |
e4b91c48 JV |
5238 | } |
5239 | ||
dfe60397 | 5240 | res = register_netdevice(bond_dev); |
0daa2303 | 5241 | |
30c15ba9 | 5242 | out: |
7e083840 | 5243 | rtnl_unlock(); |
9e2e61fb AW |
5244 | if (res < 0) |
5245 | bond_destructor(bond_dev); | |
30c15ba9 | 5246 | return res; |
dfe60397 MW |
5247 | } |
5248 | ||
2c8c1e72 | 5249 | static int __net_init bond_net_init(struct net *net) |
ec87fd3b | 5250 | { |
15449745 | 5251 | struct bond_net *bn = net_generic(net, bond_net_id); |
ec87fd3b EB |
5252 | |
5253 | bn->net = net; | |
5254 | INIT_LIST_HEAD(&bn->dev_list); | |
5255 | ||
ec87fd3b | 5256 | bond_create_proc_dir(bn); |
15449745 EB |
5257 | |
5258 | return 0; | |
ec87fd3b EB |
5259 | } |
5260 | ||
2c8c1e72 | 5261 | static void __net_exit bond_net_exit(struct net *net) |
ec87fd3b | 5262 | { |
15449745 | 5263 | struct bond_net *bn = net_generic(net, bond_net_id); |
ec87fd3b EB |
5264 | |
5265 | bond_destroy_proc_dir(bn); | |
ec87fd3b EB |
5266 | } |
5267 | ||
5268 | static struct pernet_operations bond_net_ops = { | |
5269 | .init = bond_net_init, | |
5270 | .exit = bond_net_exit, | |
15449745 EB |
5271 | .id = &bond_net_id, |
5272 | .size = sizeof(struct bond_net), | |
ec87fd3b EB |
5273 | }; |
5274 | ||
1da177e4 LT |
5275 | static int __init bonding_init(void) |
5276 | { | |
1da177e4 LT |
5277 | int i; |
5278 | int res; | |
5279 | ||
3d632c3f | 5280 | pr_info("%s", version); |
1da177e4 | 5281 | |
dfe60397 | 5282 | res = bond_check_params(&bonding_defaults); |
3d632c3f | 5283 | if (res) |
dfe60397 | 5284 | goto out; |
1da177e4 | 5285 | |
15449745 | 5286 | res = register_pernet_subsys(&bond_net_ops); |
ec87fd3b EB |
5287 | if (res) |
5288 | goto out; | |
027ea041 | 5289 | |
88ead977 EB |
5290 | res = rtnl_link_register(&bond_link_ops); |
5291 | if (res) | |
6639104b | 5292 | goto err_link; |
88ead977 | 5293 | |
1da177e4 | 5294 | for (i = 0; i < max_bonds; i++) { |
ec87fd3b | 5295 | res = bond_create(&init_net, NULL); |
dfe60397 MW |
5296 | if (res) |
5297 | goto err; | |
1da177e4 LT |
5298 | } |
5299 | ||
b76cdba9 MW |
5300 | res = bond_create_sysfs(); |
5301 | if (res) | |
5302 | goto err; | |
5303 | ||
1da177e4 | 5304 | register_netdevice_notifier(&bond_netdev_notifier); |
c3ade5ca | 5305 | register_inetaddr_notifier(&bond_inetaddr_notifier); |
305d552a | 5306 | bond_register_ipv6_notifier(); |
dfe60397 | 5307 | out: |
1da177e4 | 5308 | return res; |
88ead977 EB |
5309 | err: |
5310 | rtnl_link_unregister(&bond_link_ops); | |
6639104b | 5311 | err_link: |
15449745 | 5312 | unregister_pernet_subsys(&bond_net_ops); |
88ead977 | 5313 | goto out; |
dfe60397 | 5314 | |
1da177e4 LT |
5315 | } |
5316 | ||
5317 | static void __exit bonding_exit(void) | |
5318 | { | |
5319 | unregister_netdevice_notifier(&bond_netdev_notifier); | |
c3ade5ca | 5320 | unregister_inetaddr_notifier(&bond_inetaddr_notifier); |
305d552a | 5321 | bond_unregister_ipv6_notifier(); |
1da177e4 | 5322 | |
ae68c398 PE |
5323 | bond_destroy_sysfs(); |
5324 | ||
88ead977 | 5325 | rtnl_link_unregister(&bond_link_ops); |
15449745 | 5326 | unregister_pernet_subsys(&bond_net_ops); |
1da177e4 LT |
5327 | } |
5328 | ||
5329 | module_init(bonding_init); | |
5330 | module_exit(bonding_exit); | |
5331 | MODULE_LICENSE("GPL"); | |
5332 | MODULE_VERSION(DRV_VERSION); | |
5333 | MODULE_DESCRIPTION(DRV_DESCRIPTION ", v" DRV_VERSION); | |
5334 | MODULE_AUTHOR("Thomas Davis, tadavis@lbl.gov and many others"); | |
88ead977 | 5335 | MODULE_ALIAS_RTNL_LINK("bond"); |