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Commit | Line | Data |
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72be35fe JP |
1 | /* |
2 | * drivers/net/bond/bond_options.c - bonding options | |
3 | * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us> | |
eecdaa6e | 4 | * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com> |
72be35fe JP |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
13 | ||
14 | #include <linux/errno.h> | |
15 | #include <linux/if.h> | |
d9e32b21 JP |
16 | #include <linux/netdevice.h> |
17 | #include <linux/rwlock.h> | |
18 | #include <linux/rcupdate.h> | |
09117362 | 19 | #include <linux/ctype.h> |
4fb0ef58 | 20 | #include <linux/inet.h> |
72be35fe JP |
21 | #include "bonding.h" |
22 | ||
2b3798d5 NA |
23 | static struct bond_opt_value bond_mode_tbl[] = { |
24 | { "balance-rr", BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT}, | |
25 | { "active-backup", BOND_MODE_ACTIVEBACKUP, 0}, | |
26 | { "balance-xor", BOND_MODE_XOR, 0}, | |
27 | { "broadcast", BOND_MODE_BROADCAST, 0}, | |
28 | { "802.3ad", BOND_MODE_8023AD, 0}, | |
29 | { "balance-tlb", BOND_MODE_TLB, 0}, | |
30 | { "balance-alb", BOND_MODE_ALB, 0}, | |
31 | { NULL, -1, 0}, | |
32 | }; | |
33 | ||
aa59d851 NA |
34 | static struct bond_opt_value bond_pps_tbl[] = { |
35 | { "default", 1, BOND_VALFLAG_DEFAULT}, | |
36 | { "maxval", USHRT_MAX, BOND_VALFLAG_MAX}, | |
37 | { NULL, -1, 0}, | |
38 | }; | |
39 | ||
a4b32ce7 NA |
40 | static struct bond_opt_value bond_xmit_hashtype_tbl[] = { |
41 | { "layer2", BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT}, | |
42 | { "layer3+4", BOND_XMIT_POLICY_LAYER34, 0}, | |
43 | { "layer2+3", BOND_XMIT_POLICY_LAYER23, 0}, | |
44 | { "encap2+3", BOND_XMIT_POLICY_ENCAP23, 0}, | |
45 | { "encap3+4", BOND_XMIT_POLICY_ENCAP34, 0}, | |
46 | { NULL, -1, 0}, | |
47 | }; | |
48 | ||
16228881 NA |
49 | static struct bond_opt_value bond_arp_validate_tbl[] = { |
50 | { "none", BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT}, | |
51 | { "active", BOND_ARP_VALIDATE_ACTIVE, 0}, | |
52 | { "backup", BOND_ARP_VALIDATE_BACKUP, 0}, | |
53 | { "all", BOND_ARP_VALIDATE_ALL, 0}, | |
54 | { NULL, -1, 0}, | |
55 | }; | |
56 | ||
edf36b24 NA |
57 | static struct bond_opt_value bond_arp_all_targets_tbl[] = { |
58 | { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT}, | |
59 | { "all", BOND_ARP_TARGETS_ALL, 0}, | |
60 | { NULL, -1, 0}, | |
61 | }; | |
62 | ||
1df6b6aa NA |
63 | static struct bond_opt_value bond_fail_over_mac_tbl[] = { |
64 | { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT}, | |
65 | { "active", BOND_FOM_ACTIVE, 0}, | |
66 | { "follow", BOND_FOM_FOLLOW, 0}, | |
67 | { NULL, -1, 0}, | |
68 | }; | |
69 | ||
7bdb04ed NA |
70 | static struct bond_opt_value bond_intmax_tbl[] = { |
71 | { "off", 0, BOND_VALFLAG_DEFAULT}, | |
72 | { "maxval", INT_MAX, BOND_VALFLAG_MAX}, | |
73 | }; | |
74 | ||
d3131de7 NA |
75 | static struct bond_opt_value bond_lacp_rate_tbl[] = { |
76 | { "slow", AD_LACP_SLOW, 0}, | |
77 | { "fast", AD_LACP_FAST, 0}, | |
78 | { NULL, -1, 0}, | |
79 | }; | |
80 | ||
9e5f5eeb NA |
81 | static struct bond_opt_value bond_ad_select_tbl[] = { |
82 | { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT}, | |
83 | { "bandwidth", BOND_AD_BANDWIDTH, 0}, | |
84 | { "count", BOND_AD_COUNT, 0}, | |
85 | { NULL, -1, 0}, | |
86 | }; | |
87 | ||
ef56becb NA |
88 | static struct bond_opt_value bond_num_peer_notif_tbl[] = { |
89 | { "off", 0, 0}, | |
90 | { "maxval", 255, BOND_VALFLAG_MAX}, | |
91 | { "default", 1, BOND_VALFLAG_DEFAULT}, | |
92 | { NULL, -1, 0} | |
93 | }; | |
94 | ||
388d3a6d NA |
95 | static struct bond_opt_value bond_primary_reselect_tbl[] = { |
96 | { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT}, | |
97 | { "better", BOND_PRI_RESELECT_BETTER, 0}, | |
98 | { "failure", BOND_PRI_RESELECT_FAILURE, 0}, | |
99 | { NULL, -1}, | |
100 | }; | |
101 | ||
0fff0608 NA |
102 | static struct bond_opt_value bond_use_carrier_tbl[] = { |
103 | { "off", 0, 0}, | |
104 | { "on", 1, BOND_VALFLAG_DEFAULT}, | |
105 | { NULL, -1, 0} | |
106 | }; | |
107 | ||
3df01162 NA |
108 | static struct bond_opt_value bond_all_slaves_active_tbl[] = { |
109 | { "off", 0, BOND_VALFLAG_DEFAULT}, | |
110 | { "on", 1, 0}, | |
111 | { NULL, -1, 0} | |
112 | }; | |
113 | ||
105c8fb6 NA |
114 | static struct bond_opt_value bond_resend_igmp_tbl[] = { |
115 | { "off", 0, 0}, | |
116 | { "maxval", 255, BOND_VALFLAG_MAX}, | |
117 | { "default", 1, BOND_VALFLAG_DEFAULT}, | |
118 | { NULL, -1, 0} | |
119 | }; | |
120 | ||
4325b374 NA |
121 | static struct bond_opt_value bond_lp_interval_tbl[] = { |
122 | { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT}, | |
123 | { "maxval", INT_MAX, BOND_VALFLAG_MAX}, | |
124 | }; | |
125 | ||
09117362 | 126 | static struct bond_option bond_opts[] = { |
2b3798d5 NA |
127 | [BOND_OPT_MODE] = { |
128 | .id = BOND_OPT_MODE, | |
129 | .name = "mode", | |
130 | .desc = "bond device mode", | |
131 | .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN, | |
132 | .values = bond_mode_tbl, | |
133 | .set = bond_option_mode_set | |
134 | }, | |
aa59d851 NA |
135 | [BOND_OPT_PACKETS_PER_SLAVE] = { |
136 | .id = BOND_OPT_PACKETS_PER_SLAVE, | |
137 | .name = "packets_per_slave", | |
138 | .desc = "Packets to send per slave in RR mode", | |
139 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)), | |
140 | .values = bond_pps_tbl, | |
141 | .set = bond_option_pps_set | |
142 | }, | |
a4b32ce7 NA |
143 | [BOND_OPT_XMIT_HASH] = { |
144 | .id = BOND_OPT_XMIT_HASH, | |
145 | .name = "xmit_hash_policy", | |
146 | .desc = "balance-xor and 802.3ad hashing method", | |
147 | .values = bond_xmit_hashtype_tbl, | |
148 | .set = bond_option_xmit_hash_policy_set | |
149 | }, | |
16228881 NA |
150 | [BOND_OPT_ARP_VALIDATE] = { |
151 | .id = BOND_OPT_ARP_VALIDATE, | |
152 | .name = "arp_validate", | |
153 | .desc = "validate src/dst of ARP probes", | |
154 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP)), | |
155 | .values = bond_arp_validate_tbl, | |
156 | .set = bond_option_arp_validate_set | |
157 | }, | |
edf36b24 NA |
158 | [BOND_OPT_ARP_ALL_TARGETS] = { |
159 | .id = BOND_OPT_ARP_ALL_TARGETS, | |
160 | .name = "arp_all_targets", | |
161 | .desc = "fail on any/all arp targets timeout", | |
162 | .values = bond_arp_all_targets_tbl, | |
163 | .set = bond_option_arp_all_targets_set | |
164 | }, | |
1df6b6aa NA |
165 | [BOND_OPT_FAIL_OVER_MAC] = { |
166 | .id = BOND_OPT_FAIL_OVER_MAC, | |
167 | .name = "fail_over_mac", | |
168 | .desc = "For active-backup, do not set all slaves to the same MAC", | |
169 | .flags = BOND_OPTFLAG_NOSLAVES, | |
170 | .values = bond_fail_over_mac_tbl, | |
171 | .set = bond_option_fail_over_mac_set | |
172 | }, | |
7bdb04ed NA |
173 | [BOND_OPT_ARP_INTERVAL] = { |
174 | .id = BOND_OPT_ARP_INTERVAL, | |
175 | .name = "arp_interval", | |
176 | .desc = "arp interval in milliseconds", | |
177 | .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) | | |
178 | BIT(BOND_MODE_ALB), | |
179 | .values = bond_intmax_tbl, | |
180 | .set = bond_option_arp_interval_set | |
181 | }, | |
4fb0ef58 NA |
182 | [BOND_OPT_ARP_TARGETS] = { |
183 | .id = BOND_OPT_ARP_TARGETS, | |
184 | .name = "arp_ip_target", | |
185 | .desc = "arp targets in n.n.n.n form", | |
186 | .flags = BOND_OPTFLAG_RAWVAL, | |
187 | .set = bond_option_arp_ip_targets_set | |
188 | }, | |
25a9b54a NA |
189 | [BOND_OPT_DOWNDELAY] = { |
190 | .id = BOND_OPT_DOWNDELAY, | |
191 | .name = "downdelay", | |
192 | .desc = "Delay before considering link down, in milliseconds", | |
193 | .values = bond_intmax_tbl, | |
194 | .set = bond_option_downdelay_set | |
195 | }, | |
e4994612 NA |
196 | [BOND_OPT_UPDELAY] = { |
197 | .id = BOND_OPT_UPDELAY, | |
198 | .name = "updelay", | |
199 | .desc = "Delay before considering link up, in milliseconds", | |
200 | .values = bond_intmax_tbl, | |
201 | .set = bond_option_updelay_set | |
202 | }, | |
d3131de7 NA |
203 | [BOND_OPT_LACP_RATE] = { |
204 | .id = BOND_OPT_LACP_RATE, | |
205 | .name = "lacp_rate", | |
206 | .desc = "LACPDU tx rate to request from 802.3ad partner", | |
207 | .flags = BOND_OPTFLAG_IFDOWN, | |
208 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)), | |
209 | .values = bond_lacp_rate_tbl, | |
210 | .set = bond_option_lacp_rate_set | |
211 | }, | |
633ddc9e NA |
212 | [BOND_OPT_MINLINKS] = { |
213 | .id = BOND_OPT_MINLINKS, | |
214 | .name = "min_links", | |
215 | .desc = "Minimum number of available links before turning on carrier", | |
216 | .values = bond_intmax_tbl, | |
217 | .set = bond_option_min_links_set | |
218 | }, | |
9e5f5eeb NA |
219 | [BOND_OPT_AD_SELECT] = { |
220 | .id = BOND_OPT_AD_SELECT, | |
221 | .name = "ad_select", | |
222 | .desc = "803.ad aggregation selection logic", | |
223 | .flags = BOND_OPTFLAG_IFDOWN, | |
224 | .values = bond_ad_select_tbl, | |
225 | .set = bond_option_ad_select_set | |
226 | }, | |
ef56becb NA |
227 | [BOND_OPT_NUM_PEER_NOTIF] = { |
228 | .id = BOND_OPT_NUM_PEER_NOTIF, | |
229 | .name = "num_unsol_na", | |
230 | .desc = "Number of peer notifications to send on failover event", | |
231 | .values = bond_num_peer_notif_tbl, | |
232 | .set = bond_option_num_peer_notif_set | |
233 | }, | |
b98d9c66 NA |
234 | [BOND_OPT_MIIMON] = { |
235 | .id = BOND_OPT_MIIMON, | |
236 | .name = "miimon", | |
237 | .desc = "Link check interval in milliseconds", | |
238 | .values = bond_intmax_tbl, | |
239 | .set = bond_option_miimon_set | |
240 | }, | |
180222f0 NA |
241 | [BOND_OPT_PRIMARY] = { |
242 | .id = BOND_OPT_PRIMARY, | |
243 | .name = "primary", | |
244 | .desc = "Primary network device to use", | |
245 | .flags = BOND_OPTFLAG_RAWVAL, | |
246 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) | | |
247 | BIT(BOND_MODE_TLB) | | |
248 | BIT(BOND_MODE_ALB)), | |
249 | .set = bond_option_primary_set | |
250 | }, | |
388d3a6d NA |
251 | [BOND_OPT_PRIMARY_RESELECT] = { |
252 | .id = BOND_OPT_PRIMARY_RESELECT, | |
253 | .name = "primary_reselect", | |
254 | .desc = "Reselect primary slave once it comes up", | |
255 | .values = bond_primary_reselect_tbl, | |
256 | .set = bond_option_primary_reselect_set | |
257 | }, | |
0fff0608 NA |
258 | [BOND_OPT_USE_CARRIER] = { |
259 | .id = BOND_OPT_USE_CARRIER, | |
260 | .name = "use_carrier", | |
261 | .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon", | |
262 | .values = bond_use_carrier_tbl, | |
263 | .set = bond_option_use_carrier_set | |
264 | }, | |
d1fbd3ed NA |
265 | [BOND_OPT_ACTIVE_SLAVE] = { |
266 | .id = BOND_OPT_ACTIVE_SLAVE, | |
267 | .name = "active_slave", | |
268 | .desc = "Currently active slave", | |
269 | .flags = BOND_OPTFLAG_RAWVAL, | |
270 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) | | |
271 | BIT(BOND_MODE_TLB) | | |
272 | BIT(BOND_MODE_ALB)), | |
273 | .set = bond_option_active_slave_set | |
274 | }, | |
24089ba1 NA |
275 | [BOND_OPT_QUEUE_ID] = { |
276 | .id = BOND_OPT_QUEUE_ID, | |
277 | .name = "queue_id", | |
278 | .desc = "Set queue id of a slave", | |
279 | .flags = BOND_OPTFLAG_RAWVAL, | |
280 | .set = bond_option_queue_id_set | |
281 | }, | |
3df01162 NA |
282 | [BOND_OPT_ALL_SLAVES_ACTIVE] = { |
283 | .id = BOND_OPT_ALL_SLAVES_ACTIVE, | |
284 | .name = "all_slaves_active", | |
285 | .desc = "Keep all frames received on an interface by setting active flag for all slaves", | |
286 | .values = bond_all_slaves_active_tbl, | |
287 | .set = bond_option_all_slaves_active_set | |
288 | }, | |
105c8fb6 NA |
289 | [BOND_OPT_RESEND_IGMP] = { |
290 | .id = BOND_OPT_RESEND_IGMP, | |
291 | .name = "resend_igmp", | |
292 | .desc = "Number of IGMP membership reports to send on link failure", | |
293 | .values = bond_resend_igmp_tbl, | |
294 | .set = bond_option_resend_igmp_set | |
295 | }, | |
4325b374 NA |
296 | [BOND_OPT_LP_INTERVAL] = { |
297 | .id = BOND_OPT_LP_INTERVAL, | |
298 | .name = "lp_interval", | |
299 | .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch", | |
300 | .values = bond_lp_interval_tbl, | |
301 | .set = bond_option_lp_interval_set | |
302 | }, | |
0e2e5b66 NA |
303 | [BOND_OPT_SLAVES] = { |
304 | .id = BOND_OPT_SLAVES, | |
305 | .name = "slaves", | |
306 | .desc = "Slave membership management", | |
307 | .flags = BOND_OPTFLAG_RAWVAL, | |
308 | .set = bond_option_slaves_set | |
309 | }, | |
09117362 NA |
310 | { } |
311 | }; | |
312 | ||
313 | /* Searches for a value in opt's values[] table */ | |
314 | struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val) | |
315 | { | |
316 | struct bond_option *opt; | |
317 | int i; | |
318 | ||
319 | opt = bond_opt_get(option); | |
320 | if (WARN_ON(!opt)) | |
321 | return NULL; | |
322 | for (i = 0; opt->values && opt->values[i].string; i++) | |
323 | if (opt->values[i].value == val) | |
324 | return &opt->values[i]; | |
325 | ||
326 | return NULL; | |
327 | } | |
328 | ||
329 | /* Searches for a value in opt's values[] table which matches the flagmask */ | |
330 | static struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt, | |
331 | u32 flagmask) | |
332 | { | |
333 | int i; | |
334 | ||
335 | for (i = 0; opt->values && opt->values[i].string; i++) | |
336 | if (opt->values[i].flags & flagmask) | |
337 | return &opt->values[i]; | |
338 | ||
339 | return NULL; | |
340 | } | |
341 | ||
342 | /* If maxval is missing then there's no range to check. In case minval is | |
343 | * missing then it's considered to be 0. | |
344 | */ | |
345 | static bool bond_opt_check_range(const struct bond_option *opt, u64 val) | |
346 | { | |
347 | struct bond_opt_value *minval, *maxval; | |
348 | ||
349 | minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); | |
350 | maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); | |
351 | if (!maxval || (minval && val < minval->value) || val > maxval->value) | |
352 | return false; | |
353 | ||
354 | return true; | |
355 | } | |
356 | ||
357 | /** | |
358 | * bond_opt_parse - parse option value | |
359 | * @opt: the option to parse against | |
360 | * @val: value to parse | |
361 | * | |
362 | * This function tries to extract the value from @val and check if it's | |
363 | * a possible match for the option and returns NULL if a match isn't found, | |
364 | * or the struct_opt_value that matched. It also strips the new line from | |
365 | * @val->string if it's present. | |
366 | */ | |
367 | struct bond_opt_value *bond_opt_parse(const struct bond_option *opt, | |
368 | struct bond_opt_value *val) | |
369 | { | |
370 | char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, }; | |
371 | struct bond_opt_value *tbl, *ret = NULL; | |
372 | bool checkval; | |
373 | int i, rv; | |
374 | ||
375 | /* No parsing if the option wants a raw val */ | |
376 | if (opt->flags & BOND_OPTFLAG_RAWVAL) | |
377 | return val; | |
378 | ||
379 | tbl = opt->values; | |
380 | if (!tbl) | |
381 | goto out; | |
382 | ||
383 | /* ULLONG_MAX is used to bypass string processing */ | |
384 | checkval = val->value != ULLONG_MAX; | |
385 | if (!checkval) { | |
386 | if (!val->string) | |
387 | goto out; | |
388 | p = strchr(val->string, '\n'); | |
389 | if (p) | |
390 | *p = '\0'; | |
391 | for (p = val->string; *p; p++) | |
392 | if (!(isdigit(*p) || isspace(*p))) | |
393 | break; | |
394 | /* The following code extracts the string to match or the value | |
395 | * and sets checkval appropriately | |
396 | */ | |
397 | if (*p) { | |
398 | rv = sscanf(val->string, "%32s", valstr); | |
399 | } else { | |
400 | rv = sscanf(val->string, "%llu", &val->value); | |
401 | checkval = true; | |
402 | } | |
403 | if (!rv) | |
404 | goto out; | |
405 | } | |
406 | ||
407 | for (i = 0; tbl[i].string; i++) { | |
408 | /* Check for exact match */ | |
409 | if (checkval) { | |
410 | if (val->value == tbl[i].value) | |
411 | ret = &tbl[i]; | |
412 | } else { | |
413 | if (!strcmp(valstr, "default") && | |
414 | (tbl[i].flags & BOND_VALFLAG_DEFAULT)) | |
415 | ret = &tbl[i]; | |
416 | ||
417 | if (!strcmp(valstr, tbl[i].string)) | |
418 | ret = &tbl[i]; | |
419 | } | |
420 | /* Found an exact match */ | |
421 | if (ret) | |
422 | goto out; | |
423 | } | |
424 | /* Possible range match */ | |
425 | if (checkval && bond_opt_check_range(opt, val->value)) | |
426 | ret = val; | |
427 | out: | |
428 | return ret; | |
429 | } | |
430 | ||
431 | /* Check opt's dependencies against bond mode and currently set options */ | |
432 | static int bond_opt_check_deps(struct bonding *bond, | |
433 | const struct bond_option *opt) | |
434 | { | |
435 | struct bond_params *params = &bond->params; | |
436 | ||
437 | if (test_bit(params->mode, &opt->unsuppmodes)) | |
438 | return -EACCES; | |
439 | if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond)) | |
440 | return -ENOTEMPTY; | |
441 | if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP)) | |
442 | return -EBUSY; | |
443 | ||
444 | return 0; | |
445 | } | |
446 | ||
447 | static void bond_opt_dep_print(struct bonding *bond, | |
448 | const struct bond_option *opt) | |
449 | { | |
2b3798d5 | 450 | struct bond_opt_value *modeval; |
09117362 NA |
451 | struct bond_params *params; |
452 | ||
453 | params = &bond->params; | |
2b3798d5 | 454 | modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode); |
09117362 | 455 | if (test_bit(params->mode, &opt->unsuppmodes)) |
2b3798d5 NA |
456 | pr_err("%s: option %s: mode dependency failed, not supported in mode %s(%llu)\n", |
457 | bond->dev->name, opt->name, | |
458 | modeval->string, modeval->value); | |
09117362 NA |
459 | } |
460 | ||
461 | static void bond_opt_error_interpret(struct bonding *bond, | |
462 | const struct bond_option *opt, | |
463 | int error, struct bond_opt_value *val) | |
464 | { | |
465 | struct bond_opt_value *minval, *maxval; | |
466 | char *p; | |
467 | ||
468 | switch (error) { | |
469 | case -EINVAL: | |
470 | if (val) { | |
471 | if (val->string) { | |
472 | /* sometimes RAWVAL opts may have new lines */ | |
473 | p = strchr(val->string, '\n'); | |
474 | if (p) | |
475 | *p = '\0'; | |
476 | pr_err("%s: option %s: invalid value (%s).\n", | |
477 | bond->dev->name, opt->name, val->string); | |
478 | } else { | |
479 | pr_err("%s: option %s: invalid value (%llu).\n", | |
480 | bond->dev->name, opt->name, val->value); | |
481 | } | |
482 | } | |
483 | minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); | |
484 | maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); | |
485 | if (!maxval) | |
486 | break; | |
487 | pr_err("%s: option %s: allowed values %llu - %llu.\n", | |
488 | bond->dev->name, opt->name, minval ? minval->value : 0, | |
489 | maxval->value); | |
490 | break; | |
491 | case -EACCES: | |
492 | bond_opt_dep_print(bond, opt); | |
493 | break; | |
494 | case -ENOTEMPTY: | |
495 | pr_err("%s: option %s: unable to set because the bond device has slaves.\n", | |
496 | bond->dev->name, opt->name); | |
497 | break; | |
498 | case -EBUSY: | |
499 | pr_err("%s: option %s: unable to set because the bond device is up.\n", | |
500 | bond->dev->name, opt->name); | |
501 | break; | |
502 | default: | |
503 | break; | |
504 | } | |
505 | } | |
506 | ||
507 | /** | |
508 | * __bond_opt_set - set a bonding option | |
509 | * @bond: target bond device | |
510 | * @option: option to set | |
511 | * @val: value to set it to | |
512 | * | |
513 | * This function is used to change the bond's option value, it can be | |
514 | * used for both enabling/changing an option and for disabling it. RTNL lock | |
515 | * must be obtained before calling this function. | |
516 | */ | |
517 | int __bond_opt_set(struct bonding *bond, | |
518 | unsigned int option, struct bond_opt_value *val) | |
519 | { | |
520 | struct bond_opt_value *retval = NULL; | |
521 | const struct bond_option *opt; | |
522 | int ret = -ENOENT; | |
523 | ||
524 | ASSERT_RTNL(); | |
525 | ||
526 | opt = bond_opt_get(option); | |
527 | if (WARN_ON(!val) || WARN_ON(!opt)) | |
528 | goto out; | |
529 | ret = bond_opt_check_deps(bond, opt); | |
530 | if (ret) | |
531 | goto out; | |
532 | retval = bond_opt_parse(opt, val); | |
533 | if (!retval) { | |
534 | ret = -EINVAL; | |
535 | goto out; | |
536 | } | |
537 | ret = opt->set(bond, retval); | |
538 | out: | |
539 | if (ret) | |
540 | bond_opt_error_interpret(bond, opt, ret, val); | |
541 | ||
542 | return ret; | |
543 | } | |
544 | ||
545 | /** | |
546 | * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set | |
547 | * @bond: target bond device | |
548 | * @option: option to set | |
549 | * @buf: value to set it to | |
550 | * | |
551 | * This function tries to acquire RTNL without blocking and if successful | |
552 | * calls __bond_opt_set. It is mainly used for sysfs option manipulation. | |
553 | */ | |
554 | int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf) | |
555 | { | |
556 | struct bond_opt_value optval; | |
557 | int ret; | |
558 | ||
559 | if (!rtnl_trylock()) | |
560 | return restart_syscall(); | |
561 | bond_opt_initstr(&optval, buf); | |
562 | ret = __bond_opt_set(bond, option, &optval); | |
563 | rtnl_unlock(); | |
564 | ||
565 | return ret; | |
566 | } | |
567 | ||
568 | /** | |
569 | * bond_opt_get - get a pointer to an option | |
570 | * @option: option for which to return a pointer | |
571 | * | |
572 | * This function checks if option is valid and if so returns a pointer | |
573 | * to its entry in the bond_opts[] option array. | |
574 | */ | |
575 | struct bond_option *bond_opt_get(unsigned int option) | |
576 | { | |
577 | if (!BOND_OPT_VALID(option)) | |
578 | return NULL; | |
579 | ||
580 | return &bond_opts[option]; | |
581 | } | |
582 | ||
2b3798d5 | 583 | int bond_option_mode_set(struct bonding *bond, struct bond_opt_value *newval) |
72be35fe | 584 | { |
2b3798d5 | 585 | if (BOND_NO_USES_ARP(newval->value) && bond->params.arp_interval) { |
fe9d04af | 586 | pr_info("%s: %s mode is incompatible with arp monitoring, start mii monitoring\n", |
2b3798d5 | 587 | bond->dev->name, newval->string); |
fe9d04af | 588 | /* disable arp monitoring */ |
589 | bond->params.arp_interval = 0; | |
590 | /* set miimon to default value */ | |
591 | bond->params.miimon = BOND_DEFAULT_MIIMON; | |
592 | pr_info("%s: Setting MII monitoring interval to %d.\n", | |
593 | bond->dev->name, bond->params.miimon); | |
72be35fe JP |
594 | } |
595 | ||
596 | /* don't cache arp_validate between modes */ | |
597 | bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; | |
2b3798d5 NA |
598 | bond->params.mode = newval->value; |
599 | ||
72be35fe JP |
600 | return 0; |
601 | } | |
d9e32b21 | 602 | |
752d48b5 JP |
603 | static struct net_device *__bond_option_active_slave_get(struct bonding *bond, |
604 | struct slave *slave) | |
605 | { | |
606 | return USES_PRIMARY(bond->params.mode) && slave ? slave->dev : NULL; | |
607 | } | |
608 | ||
609 | struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) | |
610 | { | |
611 | struct slave *slave = rcu_dereference(bond->curr_active_slave); | |
612 | ||
613 | return __bond_option_active_slave_get(bond, slave); | |
614 | } | |
615 | ||
616 | struct net_device *bond_option_active_slave_get(struct bonding *bond) | |
617 | { | |
618 | return __bond_option_active_slave_get(bond, bond->curr_active_slave); | |
619 | } | |
620 | ||
d9e32b21 | 621 | int bond_option_active_slave_set(struct bonding *bond, |
d1fbd3ed | 622 | struct bond_opt_value *newval) |
d9e32b21 | 623 | { |
d1fbd3ed NA |
624 | char ifname[IFNAMSIZ] = { 0, }; |
625 | struct net_device *slave_dev; | |
d9e32b21 JP |
626 | int ret = 0; |
627 | ||
d1fbd3ed NA |
628 | sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */ |
629 | if (!strlen(ifname) || newval->string[0] == '\n') { | |
630 | slave_dev = NULL; | |
631 | } else { | |
632 | slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname); | |
633 | if (!slave_dev) | |
634 | return -ENODEV; | |
635 | } | |
636 | ||
d9e32b21 JP |
637 | if (slave_dev) { |
638 | if (!netif_is_bond_slave(slave_dev)) { | |
639 | pr_err("Device %s is not bonding slave.\n", | |
640 | slave_dev->name); | |
641 | return -EINVAL; | |
642 | } | |
643 | ||
644 | if (bond->dev != netdev_master_upper_dev_get(slave_dev)) { | |
645 | pr_err("%s: Device %s is not our slave.\n", | |
646 | bond->dev->name, slave_dev->name); | |
647 | return -EINVAL; | |
648 | } | |
649 | } | |
650 | ||
d9e32b21 | 651 | block_netpoll_tx(); |
d9e32b21 JP |
652 | write_lock_bh(&bond->curr_slave_lock); |
653 | ||
654 | /* check to see if we are clearing active */ | |
655 | if (!slave_dev) { | |
656 | pr_info("%s: Clearing current active slave.\n", | |
657 | bond->dev->name); | |
658 | rcu_assign_pointer(bond->curr_active_slave, NULL); | |
659 | bond_select_active_slave(bond); | |
660 | } else { | |
661 | struct slave *old_active = bond->curr_active_slave; | |
662 | struct slave *new_active = bond_slave_get_rtnl(slave_dev); | |
663 | ||
664 | BUG_ON(!new_active); | |
665 | ||
666 | if (new_active == old_active) { | |
667 | /* do nothing */ | |
668 | pr_info("%s: %s is already the current active slave.\n", | |
669 | bond->dev->name, new_active->dev->name); | |
670 | } else { | |
671 | if (old_active && (new_active->link == BOND_LINK_UP) && | |
672 | IS_UP(new_active->dev)) { | |
673 | pr_info("%s: Setting %s as active slave.\n", | |
674 | bond->dev->name, new_active->dev->name); | |
675 | bond_change_active_slave(bond, new_active); | |
676 | } else { | |
677 | pr_err("%s: Could not set %s as active slave; either %s is down or the link is down.\n", | |
678 | bond->dev->name, new_active->dev->name, | |
679 | new_active->dev->name); | |
680 | ret = -EINVAL; | |
681 | } | |
682 | } | |
683 | } | |
684 | ||
685 | write_unlock_bh(&bond->curr_slave_lock); | |
d9e32b21 | 686 | unblock_netpoll_tx(); |
d1fbd3ed | 687 | |
d9e32b21 JP |
688 | return ret; |
689 | } | |
eecdaa6e | 690 | |
b98d9c66 | 691 | int bond_option_miimon_set(struct bonding *bond, struct bond_opt_value *newval) |
eecdaa6e | 692 | { |
b98d9c66 NA |
693 | pr_info("%s: Setting MII monitoring interval to %llu.\n", |
694 | bond->dev->name, newval->value); | |
695 | bond->params.miimon = newval->value; | |
eecdaa6e | 696 | if (bond->params.updelay) |
697 | pr_info("%s: Note: Updating updelay (to %d) since it is a multiple of the miimon value.\n", | |
698 | bond->dev->name, | |
699 | bond->params.updelay * bond->params.miimon); | |
700 | if (bond->params.downdelay) | |
701 | pr_info("%s: Note: Updating downdelay (to %d) since it is a multiple of the miimon value.\n", | |
702 | bond->dev->name, | |
703 | bond->params.downdelay * bond->params.miimon); | |
b98d9c66 | 704 | if (newval->value && bond->params.arp_interval) { |
eecdaa6e | 705 | pr_info("%s: MII monitoring cannot be used with ARP monitoring. Disabling ARP monitoring...\n", |
706 | bond->dev->name); | |
707 | bond->params.arp_interval = 0; | |
708 | if (bond->params.arp_validate) | |
709 | bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; | |
710 | } | |
711 | if (bond->dev->flags & IFF_UP) { | |
712 | /* If the interface is up, we may need to fire off | |
713 | * the MII timer. If the interface is down, the | |
714 | * timer will get fired off when the open function | |
715 | * is called. | |
716 | */ | |
b98d9c66 | 717 | if (!newval->value) { |
eecdaa6e | 718 | cancel_delayed_work_sync(&bond->mii_work); |
719 | } else { | |
720 | cancel_delayed_work_sync(&bond->arp_work); | |
721 | queue_delayed_work(bond->wq, &bond->mii_work, 0); | |
722 | } | |
723 | } | |
b98d9c66 | 724 | |
eecdaa6e | 725 | return 0; |
726 | } | |
25852e29 | 727 | |
e4994612 | 728 | int bond_option_updelay_set(struct bonding *bond, struct bond_opt_value *newval) |
25852e29 | 729 | { |
e4994612 | 730 | if (!bond->params.miimon) { |
25852e29 | 731 | pr_err("%s: Unable to set up delay as MII monitoring is disabled\n", |
732 | bond->dev->name); | |
733 | return -EPERM; | |
734 | } | |
e4994612 NA |
735 | if ((newval->value % bond->params.miimon) != 0) { |
736 | pr_warn("%s: Warning: up delay (%llu) is not a multiple of miimon (%d), updelay rounded to %llu ms\n", | |
737 | bond->dev->name, newval->value, | |
738 | bond->params.miimon, | |
739 | (newval->value / bond->params.miimon) * | |
740 | bond->params.miimon); | |
25852e29 | 741 | } |
e4994612 NA |
742 | bond->params.updelay = newval->value / bond->params.miimon; |
743 | pr_info("%s: Setting up delay to %d.\n", | |
744 | bond->dev->name, | |
745 | bond->params.updelay * bond->params.miimon); | |
25852e29 | 746 | |
747 | return 0; | |
748 | } | |
c7461f9b | 749 | |
25a9b54a NA |
750 | int bond_option_downdelay_set(struct bonding *bond, |
751 | struct bond_opt_value *newval) | |
c7461f9b | 752 | { |
25a9b54a | 753 | if (!bond->params.miimon) { |
c7461f9b | 754 | pr_err("%s: Unable to set down delay as MII monitoring is disabled\n", |
755 | bond->dev->name); | |
756 | return -EPERM; | |
757 | } | |
25a9b54a NA |
758 | if ((newval->value % bond->params.miimon) != 0) { |
759 | pr_warn("%s: Warning: down delay (%llu) is not a multiple of miimon (%d), delay rounded to %llu ms\n", | |
760 | bond->dev->name, newval->value, | |
761 | bond->params.miimon, | |
762 | (newval->value / bond->params.miimon) * | |
763 | bond->params.miimon); | |
c7461f9b | 764 | } |
25a9b54a NA |
765 | bond->params.downdelay = newval->value / bond->params.miimon; |
766 | pr_info("%s: Setting down delay to %d.\n", | |
767 | bond->dev->name, | |
768 | bond->params.downdelay * bond->params.miimon); | |
c7461f9b | 769 | |
770 | return 0; | |
771 | } | |
9f53e14e | 772 | |
0fff0608 NA |
773 | int bond_option_use_carrier_set(struct bonding *bond, |
774 | struct bond_opt_value *newval) | |
9f53e14e | 775 | { |
0fff0608 NA |
776 | pr_info("%s: Setting use_carrier to %llu.\n", |
777 | bond->dev->name, newval->value); | |
778 | bond->params.use_carrier = newval->value; | |
9f53e14e | 779 | |
780 | return 0; | |
781 | } | |
06151dbc | 782 | |
7bdb04ed NA |
783 | int bond_option_arp_interval_set(struct bonding *bond, |
784 | struct bond_opt_value *newval) | |
06151dbc | 785 | { |
7bdb04ed NA |
786 | pr_info("%s: Setting ARP monitoring interval to %llu.\n", |
787 | bond->dev->name, newval->value); | |
788 | bond->params.arp_interval = newval->value; | |
789 | if (newval->value) { | |
06151dbc | 790 | if (bond->params.miimon) { |
791 | pr_info("%s: ARP monitoring cannot be used with MII monitoring. %s Disabling MII monitoring.\n", | |
792 | bond->dev->name, bond->dev->name); | |
793 | bond->params.miimon = 0; | |
794 | } | |
795 | if (!bond->params.arp_targets[0]) | |
796 | pr_info("%s: ARP monitoring has been set up, but no ARP targets have been specified.\n", | |
797 | bond->dev->name); | |
798 | } | |
799 | if (bond->dev->flags & IFF_UP) { | |
800 | /* If the interface is up, we may need to fire off | |
801 | * the ARP timer. If the interface is down, the | |
802 | * timer will get fired off when the open function | |
803 | * is called. | |
804 | */ | |
7bdb04ed | 805 | if (!newval->value) { |
06151dbc | 806 | if (bond->params.arp_validate) |
807 | bond->recv_probe = NULL; | |
808 | cancel_delayed_work_sync(&bond->arp_work); | |
809 | } else { | |
810 | /* arp_validate can be set only in active-backup mode */ | |
811 | if (bond->params.arp_validate) | |
812 | bond->recv_probe = bond_arp_rcv; | |
813 | cancel_delayed_work_sync(&bond->mii_work); | |
814 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
815 | } | |
816 | } | |
817 | ||
818 | return 0; | |
819 | } | |
7f28fa10 | 820 | |
821 | static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot, | |
822 | __be32 target, | |
823 | unsigned long last_rx) | |
824 | { | |
825 | __be32 *targets = bond->params.arp_targets; | |
826 | struct list_head *iter; | |
827 | struct slave *slave; | |
828 | ||
829 | if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) { | |
830 | bond_for_each_slave(bond, slave, iter) | |
831 | slave->target_last_arp_rx[slot] = last_rx; | |
832 | targets[slot] = target; | |
833 | } | |
834 | } | |
835 | ||
836 | static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) | |
837 | { | |
838 | __be32 *targets = bond->params.arp_targets; | |
839 | int ind; | |
840 | ||
841 | if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) { | |
842 | pr_err("%s: invalid ARP target %pI4 specified for addition\n", | |
843 | bond->dev->name, &target); | |
844 | return -EINVAL; | |
845 | } | |
846 | ||
847 | if (bond_get_targets_ip(targets, target) != -1) { /* dup */ | |
848 | pr_err("%s: ARP target %pI4 is already present\n", | |
849 | bond->dev->name, &target); | |
850 | return -EINVAL; | |
851 | } | |
852 | ||
853 | ind = bond_get_targets_ip(targets, 0); /* first free slot */ | |
854 | if (ind == -1) { | |
855 | pr_err("%s: ARP target table is full!\n", | |
856 | bond->dev->name); | |
857 | return -EINVAL; | |
858 | } | |
859 | ||
860 | pr_info("%s: adding ARP target %pI4.\n", bond->dev->name, &target); | |
861 | ||
862 | _bond_options_arp_ip_target_set(bond, ind, target, jiffies); | |
863 | ||
864 | return 0; | |
865 | } | |
866 | ||
867 | int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) | |
868 | { | |
869 | int ret; | |
870 | ||
871 | /* not to race with bond_arp_rcv */ | |
872 | write_lock_bh(&bond->lock); | |
873 | ret = _bond_option_arp_ip_target_add(bond, target); | |
874 | write_unlock_bh(&bond->lock); | |
875 | ||
876 | return ret; | |
877 | } | |
878 | ||
879 | int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target) | |
880 | { | |
881 | __be32 *targets = bond->params.arp_targets; | |
882 | struct list_head *iter; | |
883 | struct slave *slave; | |
884 | unsigned long *targets_rx; | |
885 | int ind, i; | |
886 | ||
887 | if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) { | |
888 | pr_err("%s: invalid ARP target %pI4 specified for removal\n", | |
889 | bond->dev->name, &target); | |
890 | return -EINVAL; | |
891 | } | |
892 | ||
893 | ind = bond_get_targets_ip(targets, target); | |
894 | if (ind == -1) { | |
895 | pr_err("%s: unable to remove nonexistent ARP target %pI4.\n", | |
896 | bond->dev->name, &target); | |
897 | return -EINVAL; | |
898 | } | |
899 | ||
900 | if (ind == 0 && !targets[1] && bond->params.arp_interval) | |
901 | pr_warn("%s: removing last arp target with arp_interval on\n", | |
902 | bond->dev->name); | |
903 | ||
904 | pr_info("%s: removing ARP target %pI4.\n", bond->dev->name, | |
905 | &target); | |
906 | ||
907 | /* not to race with bond_arp_rcv */ | |
908 | write_lock_bh(&bond->lock); | |
909 | ||
910 | bond_for_each_slave(bond, slave, iter) { | |
911 | targets_rx = slave->target_last_arp_rx; | |
912 | for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) | |
913 | targets_rx[i] = targets_rx[i+1]; | |
914 | targets_rx[i] = 0; | |
915 | } | |
916 | for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) | |
917 | targets[i] = targets[i+1]; | |
918 | targets[i] = 0; | |
919 | ||
920 | write_unlock_bh(&bond->lock); | |
921 | ||
922 | return 0; | |
923 | } | |
924 | ||
4fb0ef58 | 925 | void bond_option_arp_ip_targets_clear(struct bonding *bond) |
7f28fa10 | 926 | { |
4fb0ef58 | 927 | int i; |
7f28fa10 | 928 | |
929 | /* not to race with bond_arp_rcv */ | |
930 | write_lock_bh(&bond->lock); | |
7f28fa10 | 931 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) |
932 | _bond_options_arp_ip_target_set(bond, i, 0, 0); | |
4fb0ef58 NA |
933 | write_unlock_bh(&bond->lock); |
934 | } | |
7f28fa10 | 935 | |
4fb0ef58 NA |
936 | int bond_option_arp_ip_targets_set(struct bonding *bond, |
937 | struct bond_opt_value *newval) | |
938 | { | |
939 | int ret = -EPERM; | |
940 | __be32 target; | |
941 | ||
942 | if (newval->string) { | |
943 | if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) { | |
944 | pr_err("%s: invalid ARP target %pI4 specified\n", | |
945 | bond->dev->name, &target); | |
946 | return ret; | |
947 | } | |
948 | if (newval->string[0] == '+') | |
949 | ret = bond_option_arp_ip_target_add(bond, target); | |
950 | else if (newval->string[0] == '-') | |
951 | ret = bond_option_arp_ip_target_rem(bond, target); | |
952 | else | |
953 | pr_err("no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n", | |
954 | bond->dev->name); | |
955 | } else { | |
956 | target = newval->value; | |
957 | ret = bond_option_arp_ip_target_add(bond, target); | |
7f28fa10 | 958 | } |
959 | ||
7f28fa10 | 960 | return ret; |
961 | } | |
29c49482 | 962 | |
16228881 NA |
963 | int bond_option_arp_validate_set(struct bonding *bond, |
964 | struct bond_opt_value *newval) | |
29c49482 | 965 | { |
16228881 NA |
966 | pr_info("%s: setting arp_validate to %s (%llu).\n", |
967 | bond->dev->name, newval->string, newval->value); | |
29c49482 | 968 | |
969 | if (bond->dev->flags & IFF_UP) { | |
16228881 | 970 | if (!newval->value) |
29c49482 | 971 | bond->recv_probe = NULL; |
972 | else if (bond->params.arp_interval) | |
973 | bond->recv_probe = bond_arp_rcv; | |
974 | } | |
16228881 | 975 | bond->params.arp_validate = newval->value; |
29c49482 | 976 | |
977 | return 0; | |
978 | } | |
d5c84254 | 979 | |
edf36b24 NA |
980 | int bond_option_arp_all_targets_set(struct bonding *bond, |
981 | struct bond_opt_value *newval) | |
d5c84254 | 982 | { |
edf36b24 NA |
983 | pr_info("%s: setting arp_all_targets to %s (%llu).\n", |
984 | bond->dev->name, newval->string, newval->value); | |
985 | bond->params.arp_all_targets = newval->value; | |
d5c84254 | 986 | |
987 | return 0; | |
988 | } | |
0a98a0d1 | 989 | |
180222f0 | 990 | int bond_option_primary_set(struct bonding *bond, struct bond_opt_value *newval) |
0a98a0d1 | 991 | { |
180222f0 | 992 | char *p, *primary = newval->string; |
0a98a0d1 | 993 | struct list_head *iter; |
994 | struct slave *slave; | |
0a98a0d1 | 995 | |
996 | block_netpoll_tx(); | |
997 | read_lock(&bond->lock); | |
998 | write_lock_bh(&bond->curr_slave_lock); | |
999 | ||
180222f0 NA |
1000 | p = strchr(primary, '\n'); |
1001 | if (p) | |
1002 | *p = '\0'; | |
0a98a0d1 | 1003 | /* check to see if we are clearing primary */ |
1004 | if (!strlen(primary)) { | |
1005 | pr_info("%s: Setting primary slave to None.\n", | |
1006 | bond->dev->name); | |
1007 | bond->primary_slave = NULL; | |
1008 | memset(bond->params.primary, 0, sizeof(bond->params.primary)); | |
1009 | bond_select_active_slave(bond); | |
1010 | goto out; | |
1011 | } | |
1012 | ||
1013 | bond_for_each_slave(bond, slave, iter) { | |
1014 | if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) { | |
1015 | pr_info("%s: Setting %s as primary slave.\n", | |
1016 | bond->dev->name, slave->dev->name); | |
1017 | bond->primary_slave = slave; | |
1018 | strcpy(bond->params.primary, slave->dev->name); | |
1019 | bond_select_active_slave(bond); | |
1020 | goto out; | |
1021 | } | |
1022 | } | |
1023 | ||
c59ab673 | 1024 | if (bond->primary_slave) { |
1025 | pr_info("%s: Setting primary slave to None.\n", | |
1026 | bond->dev->name); | |
1027 | bond->primary_slave = NULL; | |
1028 | bond_select_active_slave(bond); | |
1029 | } | |
0a98a0d1 | 1030 | strncpy(bond->params.primary, primary, IFNAMSIZ); |
1031 | bond->params.primary[IFNAMSIZ - 1] = 0; | |
1032 | ||
1033 | pr_info("%s: Recording %s as primary, but it has not been enslaved to %s yet.\n", | |
1034 | bond->dev->name, primary, bond->dev->name); | |
1035 | ||
1036 | out: | |
1037 | write_unlock_bh(&bond->curr_slave_lock); | |
1038 | read_unlock(&bond->lock); | |
1039 | unblock_netpoll_tx(); | |
1040 | ||
180222f0 | 1041 | return 0; |
0a98a0d1 | 1042 | } |
8a41ae44 | 1043 | |
388d3a6d NA |
1044 | int bond_option_primary_reselect_set(struct bonding *bond, |
1045 | struct bond_opt_value *newval) | |
8a41ae44 | 1046 | { |
388d3a6d NA |
1047 | pr_info("%s: setting primary_reselect to %s (%llu).\n", |
1048 | bond->dev->name, newval->string, newval->value); | |
1049 | bond->params.primary_reselect = newval->value; | |
8a41ae44 | 1050 | |
1051 | block_netpoll_tx(); | |
1052 | write_lock_bh(&bond->curr_slave_lock); | |
1053 | bond_select_active_slave(bond); | |
1054 | write_unlock_bh(&bond->curr_slave_lock); | |
1055 | unblock_netpoll_tx(); | |
1056 | ||
1057 | return 0; | |
1058 | } | |
89901972 | 1059 | |
1df6b6aa NA |
1060 | int bond_option_fail_over_mac_set(struct bonding *bond, |
1061 | struct bond_opt_value *newval) | |
89901972 | 1062 | { |
1df6b6aa NA |
1063 | pr_info("%s: Setting fail_over_mac to %s (%llu).\n", |
1064 | bond->dev->name, newval->string, newval->value); | |
1065 | bond->params.fail_over_mac = newval->value; | |
89901972 | 1066 | |
1067 | return 0; | |
1068 | } | |
f70161c6 | 1069 | |
a4b32ce7 NA |
1070 | int bond_option_xmit_hash_policy_set(struct bonding *bond, |
1071 | struct bond_opt_value *newval) | |
f70161c6 | 1072 | { |
a4b32ce7 NA |
1073 | pr_info("%s: setting xmit hash policy to %s (%llu).\n", |
1074 | bond->dev->name, newval->string, newval->value); | |
1075 | bond->params.xmit_policy = newval->value; | |
f70161c6 | 1076 | |
1077 | return 0; | |
1078 | } | |
d8838de7 | 1079 | |
105c8fb6 NA |
1080 | int bond_option_resend_igmp_set(struct bonding *bond, |
1081 | struct bond_opt_value *newval) | |
d8838de7 | 1082 | { |
105c8fb6 NA |
1083 | pr_info("%s: Setting resend_igmp to %llu.\n", |
1084 | bond->dev->name, newval->value); | |
1085 | bond->params.resend_igmp = newval->value; | |
d8838de7 | 1086 | |
1087 | return 0; | |
1088 | } | |
2c9839c1 | 1089 | |
ef56becb NA |
1090 | int bond_option_num_peer_notif_set(struct bonding *bond, |
1091 | struct bond_opt_value *newval) | |
2c9839c1 | 1092 | { |
ef56becb NA |
1093 | bond->params.num_peer_notif = newval->value; |
1094 | ||
2c9839c1 | 1095 | return 0; |
1096 | } | |
1cc0b1e3 | 1097 | |
1098 | int bond_option_all_slaves_active_set(struct bonding *bond, | |
3df01162 | 1099 | struct bond_opt_value *newval) |
1cc0b1e3 | 1100 | { |
1101 | struct list_head *iter; | |
1102 | struct slave *slave; | |
1103 | ||
3df01162 | 1104 | if (newval->value == bond->params.all_slaves_active) |
1cc0b1e3 | 1105 | return 0; |
3df01162 | 1106 | bond->params.all_slaves_active = newval->value; |
1cc0b1e3 | 1107 | bond_for_each_slave(bond, slave, iter) { |
1108 | if (!bond_is_active_slave(slave)) { | |
3df01162 | 1109 | if (newval->value) |
1cc0b1e3 | 1110 | slave->inactive = 0; |
1111 | else | |
1112 | slave->inactive = 1; | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | return 0; | |
1117 | } | |
7d101008 | 1118 | |
633ddc9e NA |
1119 | int bond_option_min_links_set(struct bonding *bond, |
1120 | struct bond_opt_value *newval) | |
7d101008 | 1121 | { |
633ddc9e NA |
1122 | pr_info("%s: Setting min links value to %llu\n", |
1123 | bond->dev->name, newval->value); | |
1124 | bond->params.min_links = newval->value; | |
7d101008 | 1125 | |
1126 | return 0; | |
1127 | } | |
8d836d09 | 1128 | |
4325b374 NA |
1129 | int bond_option_lp_interval_set(struct bonding *bond, |
1130 | struct bond_opt_value *newval) | |
8d836d09 | 1131 | { |
4325b374 | 1132 | bond->params.lp_interval = newval->value; |
8d836d09 | 1133 | |
1134 | return 0; | |
1135 | } | |
c13ab3ff | 1136 | |
aa59d851 | 1137 | int bond_option_pps_set(struct bonding *bond, struct bond_opt_value *newval) |
c13ab3ff | 1138 | { |
aa59d851 NA |
1139 | bond->params.packets_per_slave = newval->value; |
1140 | if (newval->value > 0) { | |
809fa972 | 1141 | bond->params.reciprocal_packets_per_slave = |
aa59d851 | 1142 | reciprocal_value(newval->value); |
809fa972 HFS |
1143 | } else { |
1144 | /* reciprocal_packets_per_slave is unused if | |
1145 | * packets_per_slave is 0 or 1, just initialize it | |
1146 | */ | |
1147 | bond->params.reciprocal_packets_per_slave = | |
1148 | (struct reciprocal_value) { 0 }; | |
1149 | } | |
c13ab3ff | 1150 | |
1151 | return 0; | |
1152 | } | |
998e40bb | 1153 | |
d3131de7 NA |
1154 | int bond_option_lacp_rate_set(struct bonding *bond, |
1155 | struct bond_opt_value *newval) | |
998e40bb | 1156 | { |
d3131de7 NA |
1157 | pr_info("%s: Setting LACP rate to %s (%llu).\n", |
1158 | bond->dev->name, newval->string, newval->value); | |
1159 | bond->params.lacp_fast = newval->value; | |
3243c47b | 1160 | bond_3ad_update_lacp_rate(bond); |
998e40bb | 1161 | |
1162 | return 0; | |
1163 | } | |
ec029fac | 1164 | |
9e5f5eeb NA |
1165 | int bond_option_ad_select_set(struct bonding *bond, |
1166 | struct bond_opt_value *newval) | |
ec029fac | 1167 | { |
9e5f5eeb NA |
1168 | pr_info("%s: Setting ad_select to %s (%llu).\n", |
1169 | bond->dev->name, newval->string, newval->value); | |
1170 | bond->params.ad_select = newval->value; | |
ec029fac | 1171 | |
1172 | return 0; | |
1173 | } | |
24089ba1 NA |
1174 | |
1175 | int bond_option_queue_id_set(struct bonding *bond, | |
1176 | struct bond_opt_value *newval) | |
1177 | { | |
1178 | struct slave *slave, *update_slave; | |
1179 | struct net_device *sdev; | |
1180 | struct list_head *iter; | |
1181 | char *delim; | |
1182 | int ret = 0; | |
1183 | u16 qid; | |
1184 | ||
1185 | /* delim will point to queue id if successful */ | |
1186 | delim = strchr(newval->string, ':'); | |
1187 | if (!delim) | |
1188 | goto err_no_cmd; | |
1189 | ||
1190 | /* Terminate string that points to device name and bump it | |
1191 | * up one, so we can read the queue id there. | |
1192 | */ | |
1193 | *delim = '\0'; | |
1194 | if (sscanf(++delim, "%hd\n", &qid) != 1) | |
1195 | goto err_no_cmd; | |
1196 | ||
1197 | /* Check buffer length, valid ifname and queue id */ | |
1198 | if (strlen(newval->string) > IFNAMSIZ || | |
1199 | !dev_valid_name(newval->string) || | |
1200 | qid > bond->dev->real_num_tx_queues) | |
1201 | goto err_no_cmd; | |
1202 | ||
1203 | /* Get the pointer to that interface if it exists */ | |
1204 | sdev = __dev_get_by_name(dev_net(bond->dev), newval->string); | |
1205 | if (!sdev) | |
1206 | goto err_no_cmd; | |
1207 | ||
1208 | /* Search for thes slave and check for duplicate qids */ | |
1209 | update_slave = NULL; | |
1210 | bond_for_each_slave(bond, slave, iter) { | |
1211 | if (sdev == slave->dev) | |
1212 | /* We don't need to check the matching | |
1213 | * slave for dups, since we're overwriting it | |
1214 | */ | |
1215 | update_slave = slave; | |
1216 | else if (qid && qid == slave->queue_id) { | |
1217 | goto err_no_cmd; | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | if (!update_slave) | |
1222 | goto err_no_cmd; | |
1223 | ||
1224 | /* Actually set the qids for the slave */ | |
1225 | update_slave->queue_id = qid; | |
1226 | ||
1227 | out: | |
1228 | return ret; | |
1229 | ||
1230 | err_no_cmd: | |
1231 | pr_info("invalid input for queue_id set for %s.\n", | |
1232 | bond->dev->name); | |
1233 | ret = -EPERM; | |
1234 | goto out; | |
1235 | ||
1236 | } | |
0e2e5b66 NA |
1237 | |
1238 | int bond_option_slaves_set(struct bonding *bond, struct bond_opt_value *newval) | |
1239 | { | |
1240 | char command[IFNAMSIZ + 1] = { 0, }; | |
1241 | struct net_device *dev; | |
1242 | char *ifname; | |
1243 | int ret; | |
1244 | ||
1245 | sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/ | |
1246 | ifname = command + 1; | |
1247 | if ((strlen(command) <= 1) || | |
1248 | !dev_valid_name(ifname)) | |
1249 | goto err_no_cmd; | |
1250 | ||
1251 | dev = __dev_get_by_name(dev_net(bond->dev), ifname); | |
1252 | if (!dev) { | |
1253 | pr_info("%s: Interface %s does not exist!\n", | |
1254 | bond->dev->name, ifname); | |
1255 | ret = -ENODEV; | |
1256 | goto out; | |
1257 | } | |
1258 | ||
1259 | switch (command[0]) { | |
1260 | case '+': | |
1261 | pr_info("%s: Adding slave %s.\n", bond->dev->name, dev->name); | |
1262 | ret = bond_enslave(bond->dev, dev); | |
1263 | break; | |
1264 | ||
1265 | case '-': | |
1266 | pr_info("%s: Removing slave %s.\n", bond->dev->name, dev->name); | |
1267 | ret = bond_release(bond->dev, dev); | |
1268 | break; | |
1269 | ||
1270 | default: | |
1271 | goto err_no_cmd; | |
1272 | } | |
1273 | ||
1274 | out: | |
1275 | return ret; | |
1276 | ||
1277 | err_no_cmd: | |
1278 | pr_err("no command found in slaves file for bond %s. Use +ifname or -ifname.\n", | |
1279 | bond->dev->name); | |
1280 | ret = -EPERM; | |
1281 | goto out; | |
1282 | } |