Commit | Line | Data |
---|---|---|
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 | 16 | #include <linux/netdevice.h> |
eb2d4c64 | 17 | #include <linux/spinlock.h> |
d9e32b21 | 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 | 49 | static struct bond_opt_value bond_arp_validate_tbl[] = { |
896149ff VF |
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 | { "filter", BOND_ARP_FILTER, 0}, | |
55 | { "filter_active", BOND_ARP_FILTER_ACTIVE, 0}, | |
56 | { "filter_backup", BOND_ARP_FILTER_BACKUP, 0}, | |
57 | { NULL, -1, 0}, | |
16228881 NA |
58 | }; |
59 | ||
edf36b24 NA |
60 | static struct bond_opt_value bond_arp_all_targets_tbl[] = { |
61 | { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT}, | |
62 | { "all", BOND_ARP_TARGETS_ALL, 0}, | |
63 | { NULL, -1, 0}, | |
64 | }; | |
65 | ||
1df6b6aa NA |
66 | static struct bond_opt_value bond_fail_over_mac_tbl[] = { |
67 | { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT}, | |
68 | { "active", BOND_FOM_ACTIVE, 0}, | |
69 | { "follow", BOND_FOM_FOLLOW, 0}, | |
70 | { NULL, -1, 0}, | |
71 | }; | |
72 | ||
7bdb04ed NA |
73 | static struct bond_opt_value bond_intmax_tbl[] = { |
74 | { "off", 0, BOND_VALFLAG_DEFAULT}, | |
75 | { "maxval", INT_MAX, BOND_VALFLAG_MAX}, | |
76 | }; | |
77 | ||
d3131de7 NA |
78 | static struct bond_opt_value bond_lacp_rate_tbl[] = { |
79 | { "slow", AD_LACP_SLOW, 0}, | |
80 | { "fast", AD_LACP_FAST, 0}, | |
81 | { NULL, -1, 0}, | |
82 | }; | |
83 | ||
9e5f5eeb NA |
84 | static struct bond_opt_value bond_ad_select_tbl[] = { |
85 | { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT}, | |
86 | { "bandwidth", BOND_AD_BANDWIDTH, 0}, | |
87 | { "count", BOND_AD_COUNT, 0}, | |
88 | { NULL, -1, 0}, | |
89 | }; | |
90 | ||
ef56becb NA |
91 | static struct bond_opt_value bond_num_peer_notif_tbl[] = { |
92 | { "off", 0, 0}, | |
93 | { "maxval", 255, BOND_VALFLAG_MAX}, | |
94 | { "default", 1, BOND_VALFLAG_DEFAULT}, | |
95 | { NULL, -1, 0} | |
96 | }; | |
97 | ||
388d3a6d NA |
98 | static struct bond_opt_value bond_primary_reselect_tbl[] = { |
99 | { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT}, | |
100 | { "better", BOND_PRI_RESELECT_BETTER, 0}, | |
101 | { "failure", BOND_PRI_RESELECT_FAILURE, 0}, | |
102 | { NULL, -1}, | |
103 | }; | |
104 | ||
0fff0608 NA |
105 | static struct bond_opt_value bond_use_carrier_tbl[] = { |
106 | { "off", 0, 0}, | |
107 | { "on", 1, BOND_VALFLAG_DEFAULT}, | |
108 | { NULL, -1, 0} | |
109 | }; | |
110 | ||
3df01162 NA |
111 | static struct bond_opt_value bond_all_slaves_active_tbl[] = { |
112 | { "off", 0, BOND_VALFLAG_DEFAULT}, | |
113 | { "on", 1, 0}, | |
114 | { NULL, -1, 0} | |
115 | }; | |
116 | ||
105c8fb6 NA |
117 | static struct bond_opt_value bond_resend_igmp_tbl[] = { |
118 | { "off", 0, 0}, | |
119 | { "maxval", 255, BOND_VALFLAG_MAX}, | |
120 | { "default", 1, BOND_VALFLAG_DEFAULT}, | |
121 | { NULL, -1, 0} | |
122 | }; | |
123 | ||
4325b374 NA |
124 | static struct bond_opt_value bond_lp_interval_tbl[] = { |
125 | { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT}, | |
126 | { "maxval", INT_MAX, BOND_VALFLAG_MAX}, | |
127 | }; | |
128 | ||
09117362 | 129 | static struct bond_option bond_opts[] = { |
2b3798d5 NA |
130 | [BOND_OPT_MODE] = { |
131 | .id = BOND_OPT_MODE, | |
132 | .name = "mode", | |
133 | .desc = "bond device mode", | |
134 | .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN, | |
135 | .values = bond_mode_tbl, | |
136 | .set = bond_option_mode_set | |
137 | }, | |
aa59d851 NA |
138 | [BOND_OPT_PACKETS_PER_SLAVE] = { |
139 | .id = BOND_OPT_PACKETS_PER_SLAVE, | |
140 | .name = "packets_per_slave", | |
141 | .desc = "Packets to send per slave in RR mode", | |
142 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)), | |
143 | .values = bond_pps_tbl, | |
144 | .set = bond_option_pps_set | |
145 | }, | |
a4b32ce7 NA |
146 | [BOND_OPT_XMIT_HASH] = { |
147 | .id = BOND_OPT_XMIT_HASH, | |
148 | .name = "xmit_hash_policy", | |
149 | .desc = "balance-xor and 802.3ad hashing method", | |
150 | .values = bond_xmit_hashtype_tbl, | |
151 | .set = bond_option_xmit_hash_policy_set | |
152 | }, | |
16228881 NA |
153 | [BOND_OPT_ARP_VALIDATE] = { |
154 | .id = BOND_OPT_ARP_VALIDATE, | |
155 | .name = "arp_validate", | |
156 | .desc = "validate src/dst of ARP probes", | |
13ac34a8 VF |
157 | .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) | |
158 | BIT(BOND_MODE_ALB), | |
16228881 NA |
159 | .values = bond_arp_validate_tbl, |
160 | .set = bond_option_arp_validate_set | |
161 | }, | |
edf36b24 NA |
162 | [BOND_OPT_ARP_ALL_TARGETS] = { |
163 | .id = BOND_OPT_ARP_ALL_TARGETS, | |
164 | .name = "arp_all_targets", | |
165 | .desc = "fail on any/all arp targets timeout", | |
166 | .values = bond_arp_all_targets_tbl, | |
167 | .set = bond_option_arp_all_targets_set | |
168 | }, | |
1df6b6aa NA |
169 | [BOND_OPT_FAIL_OVER_MAC] = { |
170 | .id = BOND_OPT_FAIL_OVER_MAC, | |
171 | .name = "fail_over_mac", | |
172 | .desc = "For active-backup, do not set all slaves to the same MAC", | |
173 | .flags = BOND_OPTFLAG_NOSLAVES, | |
174 | .values = bond_fail_over_mac_tbl, | |
175 | .set = bond_option_fail_over_mac_set | |
176 | }, | |
7bdb04ed NA |
177 | [BOND_OPT_ARP_INTERVAL] = { |
178 | .id = BOND_OPT_ARP_INTERVAL, | |
179 | .name = "arp_interval", | |
180 | .desc = "arp interval in milliseconds", | |
181 | .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) | | |
182 | BIT(BOND_MODE_ALB), | |
183 | .values = bond_intmax_tbl, | |
184 | .set = bond_option_arp_interval_set | |
185 | }, | |
4fb0ef58 NA |
186 | [BOND_OPT_ARP_TARGETS] = { |
187 | .id = BOND_OPT_ARP_TARGETS, | |
188 | .name = "arp_ip_target", | |
189 | .desc = "arp targets in n.n.n.n form", | |
190 | .flags = BOND_OPTFLAG_RAWVAL, | |
191 | .set = bond_option_arp_ip_targets_set | |
192 | }, | |
25a9b54a NA |
193 | [BOND_OPT_DOWNDELAY] = { |
194 | .id = BOND_OPT_DOWNDELAY, | |
195 | .name = "downdelay", | |
196 | .desc = "Delay before considering link down, in milliseconds", | |
197 | .values = bond_intmax_tbl, | |
198 | .set = bond_option_downdelay_set | |
199 | }, | |
e4994612 NA |
200 | [BOND_OPT_UPDELAY] = { |
201 | .id = BOND_OPT_UPDELAY, | |
202 | .name = "updelay", | |
203 | .desc = "Delay before considering link up, in milliseconds", | |
204 | .values = bond_intmax_tbl, | |
205 | .set = bond_option_updelay_set | |
206 | }, | |
d3131de7 NA |
207 | [BOND_OPT_LACP_RATE] = { |
208 | .id = BOND_OPT_LACP_RATE, | |
209 | .name = "lacp_rate", | |
210 | .desc = "LACPDU tx rate to request from 802.3ad partner", | |
211 | .flags = BOND_OPTFLAG_IFDOWN, | |
212 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)), | |
213 | .values = bond_lacp_rate_tbl, | |
214 | .set = bond_option_lacp_rate_set | |
215 | }, | |
633ddc9e NA |
216 | [BOND_OPT_MINLINKS] = { |
217 | .id = BOND_OPT_MINLINKS, | |
218 | .name = "min_links", | |
219 | .desc = "Minimum number of available links before turning on carrier", | |
220 | .values = bond_intmax_tbl, | |
221 | .set = bond_option_min_links_set | |
222 | }, | |
9e5f5eeb NA |
223 | [BOND_OPT_AD_SELECT] = { |
224 | .id = BOND_OPT_AD_SELECT, | |
225 | .name = "ad_select", | |
226 | .desc = "803.ad aggregation selection logic", | |
227 | .flags = BOND_OPTFLAG_IFDOWN, | |
228 | .values = bond_ad_select_tbl, | |
229 | .set = bond_option_ad_select_set | |
230 | }, | |
ef56becb NA |
231 | [BOND_OPT_NUM_PEER_NOTIF] = { |
232 | .id = BOND_OPT_NUM_PEER_NOTIF, | |
233 | .name = "num_unsol_na", | |
234 | .desc = "Number of peer notifications to send on failover event", | |
235 | .values = bond_num_peer_notif_tbl, | |
236 | .set = bond_option_num_peer_notif_set | |
237 | }, | |
b98d9c66 NA |
238 | [BOND_OPT_MIIMON] = { |
239 | .id = BOND_OPT_MIIMON, | |
240 | .name = "miimon", | |
241 | .desc = "Link check interval in milliseconds", | |
242 | .values = bond_intmax_tbl, | |
243 | .set = bond_option_miimon_set | |
244 | }, | |
180222f0 NA |
245 | [BOND_OPT_PRIMARY] = { |
246 | .id = BOND_OPT_PRIMARY, | |
247 | .name = "primary", | |
248 | .desc = "Primary network device to use", | |
249 | .flags = BOND_OPTFLAG_RAWVAL, | |
250 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) | | |
251 | BIT(BOND_MODE_TLB) | | |
252 | BIT(BOND_MODE_ALB)), | |
253 | .set = bond_option_primary_set | |
254 | }, | |
388d3a6d NA |
255 | [BOND_OPT_PRIMARY_RESELECT] = { |
256 | .id = BOND_OPT_PRIMARY_RESELECT, | |
257 | .name = "primary_reselect", | |
258 | .desc = "Reselect primary slave once it comes up", | |
259 | .values = bond_primary_reselect_tbl, | |
260 | .set = bond_option_primary_reselect_set | |
261 | }, | |
0fff0608 NA |
262 | [BOND_OPT_USE_CARRIER] = { |
263 | .id = BOND_OPT_USE_CARRIER, | |
264 | .name = "use_carrier", | |
265 | .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon", | |
266 | .values = bond_use_carrier_tbl, | |
267 | .set = bond_option_use_carrier_set | |
268 | }, | |
d1fbd3ed NA |
269 | [BOND_OPT_ACTIVE_SLAVE] = { |
270 | .id = BOND_OPT_ACTIVE_SLAVE, | |
271 | .name = "active_slave", | |
272 | .desc = "Currently active slave", | |
273 | .flags = BOND_OPTFLAG_RAWVAL, | |
274 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) | | |
275 | BIT(BOND_MODE_TLB) | | |
276 | BIT(BOND_MODE_ALB)), | |
277 | .set = bond_option_active_slave_set | |
278 | }, | |
24089ba1 NA |
279 | [BOND_OPT_QUEUE_ID] = { |
280 | .id = BOND_OPT_QUEUE_ID, | |
281 | .name = "queue_id", | |
282 | .desc = "Set queue id of a slave", | |
283 | .flags = BOND_OPTFLAG_RAWVAL, | |
284 | .set = bond_option_queue_id_set | |
285 | }, | |
3df01162 NA |
286 | [BOND_OPT_ALL_SLAVES_ACTIVE] = { |
287 | .id = BOND_OPT_ALL_SLAVES_ACTIVE, | |
288 | .name = "all_slaves_active", | |
289 | .desc = "Keep all frames received on an interface by setting active flag for all slaves", | |
290 | .values = bond_all_slaves_active_tbl, | |
291 | .set = bond_option_all_slaves_active_set | |
292 | }, | |
105c8fb6 NA |
293 | [BOND_OPT_RESEND_IGMP] = { |
294 | .id = BOND_OPT_RESEND_IGMP, | |
295 | .name = "resend_igmp", | |
296 | .desc = "Number of IGMP membership reports to send on link failure", | |
297 | .values = bond_resend_igmp_tbl, | |
298 | .set = bond_option_resend_igmp_set | |
299 | }, | |
4325b374 NA |
300 | [BOND_OPT_LP_INTERVAL] = { |
301 | .id = BOND_OPT_LP_INTERVAL, | |
302 | .name = "lp_interval", | |
303 | .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch", | |
304 | .values = bond_lp_interval_tbl, | |
305 | .set = bond_option_lp_interval_set | |
306 | }, | |
0e2e5b66 NA |
307 | [BOND_OPT_SLAVES] = { |
308 | .id = BOND_OPT_SLAVES, | |
309 | .name = "slaves", | |
310 | .desc = "Slave membership management", | |
311 | .flags = BOND_OPTFLAG_RAWVAL, | |
312 | .set = bond_option_slaves_set | |
313 | }, | |
09117362 NA |
314 | { } |
315 | }; | |
316 | ||
317 | /* Searches for a value in opt's values[] table */ | |
318 | struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val) | |
319 | { | |
320 | struct bond_option *opt; | |
321 | int i; | |
322 | ||
323 | opt = bond_opt_get(option); | |
324 | if (WARN_ON(!opt)) | |
325 | return NULL; | |
326 | for (i = 0; opt->values && opt->values[i].string; i++) | |
327 | if (opt->values[i].value == val) | |
328 | return &opt->values[i]; | |
329 | ||
330 | return NULL; | |
331 | } | |
332 | ||
333 | /* Searches for a value in opt's values[] table which matches the flagmask */ | |
334 | static struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt, | |
335 | u32 flagmask) | |
336 | { | |
337 | int i; | |
338 | ||
339 | for (i = 0; opt->values && opt->values[i].string; i++) | |
340 | if (opt->values[i].flags & flagmask) | |
341 | return &opt->values[i]; | |
342 | ||
343 | return NULL; | |
344 | } | |
345 | ||
346 | /* If maxval is missing then there's no range to check. In case minval is | |
347 | * missing then it's considered to be 0. | |
348 | */ | |
349 | static bool bond_opt_check_range(const struct bond_option *opt, u64 val) | |
350 | { | |
351 | struct bond_opt_value *minval, *maxval; | |
352 | ||
353 | minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); | |
354 | maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); | |
355 | if (!maxval || (minval && val < minval->value) || val > maxval->value) | |
356 | return false; | |
357 | ||
358 | return true; | |
359 | } | |
360 | ||
361 | /** | |
362 | * bond_opt_parse - parse option value | |
363 | * @opt: the option to parse against | |
364 | * @val: value to parse | |
365 | * | |
366 | * This function tries to extract the value from @val and check if it's | |
367 | * a possible match for the option and returns NULL if a match isn't found, | |
368 | * or the struct_opt_value that matched. It also strips the new line from | |
369 | * @val->string if it's present. | |
370 | */ | |
371 | struct bond_opt_value *bond_opt_parse(const struct bond_option *opt, | |
372 | struct bond_opt_value *val) | |
373 | { | |
374 | char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, }; | |
375 | struct bond_opt_value *tbl, *ret = NULL; | |
376 | bool checkval; | |
377 | int i, rv; | |
378 | ||
379 | /* No parsing if the option wants a raw val */ | |
380 | if (opt->flags & BOND_OPTFLAG_RAWVAL) | |
381 | return val; | |
382 | ||
383 | tbl = opt->values; | |
384 | if (!tbl) | |
385 | goto out; | |
386 | ||
387 | /* ULLONG_MAX is used to bypass string processing */ | |
388 | checkval = val->value != ULLONG_MAX; | |
389 | if (!checkval) { | |
390 | if (!val->string) | |
391 | goto out; | |
392 | p = strchr(val->string, '\n'); | |
393 | if (p) | |
394 | *p = '\0'; | |
395 | for (p = val->string; *p; p++) | |
396 | if (!(isdigit(*p) || isspace(*p))) | |
397 | break; | |
398 | /* The following code extracts the string to match or the value | |
399 | * and sets checkval appropriately | |
400 | */ | |
401 | if (*p) { | |
402 | rv = sscanf(val->string, "%32s", valstr); | |
403 | } else { | |
404 | rv = sscanf(val->string, "%llu", &val->value); | |
405 | checkval = true; | |
406 | } | |
407 | if (!rv) | |
408 | goto out; | |
409 | } | |
410 | ||
411 | for (i = 0; tbl[i].string; i++) { | |
412 | /* Check for exact match */ | |
413 | if (checkval) { | |
414 | if (val->value == tbl[i].value) | |
415 | ret = &tbl[i]; | |
416 | } else { | |
417 | if (!strcmp(valstr, "default") && | |
418 | (tbl[i].flags & BOND_VALFLAG_DEFAULT)) | |
419 | ret = &tbl[i]; | |
420 | ||
421 | if (!strcmp(valstr, tbl[i].string)) | |
422 | ret = &tbl[i]; | |
423 | } | |
424 | /* Found an exact match */ | |
425 | if (ret) | |
426 | goto out; | |
427 | } | |
428 | /* Possible range match */ | |
429 | if (checkval && bond_opt_check_range(opt, val->value)) | |
430 | ret = val; | |
431 | out: | |
432 | return ret; | |
433 | } | |
434 | ||
435 | /* Check opt's dependencies against bond mode and currently set options */ | |
436 | static int bond_opt_check_deps(struct bonding *bond, | |
437 | const struct bond_option *opt) | |
438 | { | |
439 | struct bond_params *params = &bond->params; | |
440 | ||
441 | if (test_bit(params->mode, &opt->unsuppmodes)) | |
442 | return -EACCES; | |
443 | if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond)) | |
444 | return -ENOTEMPTY; | |
445 | if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP)) | |
446 | return -EBUSY; | |
447 | ||
448 | return 0; | |
449 | } | |
450 | ||
451 | static void bond_opt_dep_print(struct bonding *bond, | |
452 | const struct bond_option *opt) | |
453 | { | |
2b3798d5 | 454 | struct bond_opt_value *modeval; |
09117362 NA |
455 | struct bond_params *params; |
456 | ||
457 | params = &bond->params; | |
2b3798d5 | 458 | modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode); |
09117362 | 459 | if (test_bit(params->mode, &opt->unsuppmodes)) |
2b3798d5 NA |
460 | pr_err("%s: option %s: mode dependency failed, not supported in mode %s(%llu)\n", |
461 | bond->dev->name, opt->name, | |
462 | modeval->string, modeval->value); | |
09117362 NA |
463 | } |
464 | ||
465 | static void bond_opt_error_interpret(struct bonding *bond, | |
466 | const struct bond_option *opt, | |
467 | int error, struct bond_opt_value *val) | |
468 | { | |
469 | struct bond_opt_value *minval, *maxval; | |
470 | char *p; | |
471 | ||
472 | switch (error) { | |
473 | case -EINVAL: | |
474 | if (val) { | |
475 | if (val->string) { | |
476 | /* sometimes RAWVAL opts may have new lines */ | |
477 | p = strchr(val->string, '\n'); | |
478 | if (p) | |
479 | *p = '\0'; | |
90194264 | 480 | pr_err("%s: option %s: invalid value (%s)\n", |
09117362 NA |
481 | bond->dev->name, opt->name, val->string); |
482 | } else { | |
90194264 | 483 | pr_err("%s: option %s: invalid value (%llu)\n", |
09117362 NA |
484 | bond->dev->name, opt->name, val->value); |
485 | } | |
486 | } | |
487 | minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); | |
488 | maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); | |
489 | if (!maxval) | |
490 | break; | |
90194264 | 491 | pr_err("%s: option %s: allowed values %llu - %llu\n", |
09117362 NA |
492 | bond->dev->name, opt->name, minval ? minval->value : 0, |
493 | maxval->value); | |
494 | break; | |
495 | case -EACCES: | |
496 | bond_opt_dep_print(bond, opt); | |
497 | break; | |
498 | case -ENOTEMPTY: | |
90194264 | 499 | pr_err("%s: option %s: unable to set because the bond device has slaves\n", |
09117362 NA |
500 | bond->dev->name, opt->name); |
501 | break; | |
502 | case -EBUSY: | |
90194264 | 503 | pr_err("%s: option %s: unable to set because the bond device is up\n", |
09117362 NA |
504 | bond->dev->name, opt->name); |
505 | break; | |
506 | default: | |
507 | break; | |
508 | } | |
509 | } | |
510 | ||
511 | /** | |
512 | * __bond_opt_set - set a bonding option | |
513 | * @bond: target bond device | |
514 | * @option: option to set | |
515 | * @val: value to set it to | |
516 | * | |
517 | * This function is used to change the bond's option value, it can be | |
518 | * used for both enabling/changing an option and for disabling it. RTNL lock | |
519 | * must be obtained before calling this function. | |
520 | */ | |
521 | int __bond_opt_set(struct bonding *bond, | |
522 | unsigned int option, struct bond_opt_value *val) | |
523 | { | |
524 | struct bond_opt_value *retval = NULL; | |
525 | const struct bond_option *opt; | |
526 | int ret = -ENOENT; | |
527 | ||
528 | ASSERT_RTNL(); | |
529 | ||
530 | opt = bond_opt_get(option); | |
531 | if (WARN_ON(!val) || WARN_ON(!opt)) | |
532 | goto out; | |
533 | ret = bond_opt_check_deps(bond, opt); | |
534 | if (ret) | |
535 | goto out; | |
536 | retval = bond_opt_parse(opt, val); | |
537 | if (!retval) { | |
538 | ret = -EINVAL; | |
539 | goto out; | |
540 | } | |
541 | ret = opt->set(bond, retval); | |
542 | out: | |
543 | if (ret) | |
544 | bond_opt_error_interpret(bond, opt, ret, val); | |
545 | ||
546 | return ret; | |
547 | } | |
548 | ||
549 | /** | |
550 | * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set | |
551 | * @bond: target bond device | |
552 | * @option: option to set | |
553 | * @buf: value to set it to | |
554 | * | |
555 | * This function tries to acquire RTNL without blocking and if successful | |
556 | * calls __bond_opt_set. It is mainly used for sysfs option manipulation. | |
557 | */ | |
558 | int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf) | |
559 | { | |
560 | struct bond_opt_value optval; | |
561 | int ret; | |
562 | ||
563 | if (!rtnl_trylock()) | |
564 | return restart_syscall(); | |
565 | bond_opt_initstr(&optval, buf); | |
566 | ret = __bond_opt_set(bond, option, &optval); | |
567 | rtnl_unlock(); | |
568 | ||
569 | return ret; | |
570 | } | |
571 | ||
572 | /** | |
573 | * bond_opt_get - get a pointer to an option | |
574 | * @option: option for which to return a pointer | |
575 | * | |
576 | * This function checks if option is valid and if so returns a pointer | |
577 | * to its entry in the bond_opts[] option array. | |
578 | */ | |
579 | struct bond_option *bond_opt_get(unsigned int option) | |
580 | { | |
581 | if (!BOND_OPT_VALID(option)) | |
582 | return NULL; | |
583 | ||
584 | return &bond_opts[option]; | |
585 | } | |
586 | ||
2b3798d5 | 587 | int bond_option_mode_set(struct bonding *bond, struct bond_opt_value *newval) |
72be35fe | 588 | { |
2b3798d5 | 589 | if (BOND_NO_USES_ARP(newval->value) && bond->params.arp_interval) { |
fe9d04af | 590 | pr_info("%s: %s mode is incompatible with arp monitoring, start mii monitoring\n", |
2b3798d5 | 591 | bond->dev->name, newval->string); |
fe9d04af | 592 | /* disable arp monitoring */ |
593 | bond->params.arp_interval = 0; | |
594 | /* set miimon to default value */ | |
595 | bond->params.miimon = BOND_DEFAULT_MIIMON; | |
90194264 | 596 | pr_info("%s: Setting MII monitoring interval to %d\n", |
fe9d04af | 597 | bond->dev->name, bond->params.miimon); |
72be35fe JP |
598 | } |
599 | ||
600 | /* don't cache arp_validate between modes */ | |
601 | bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; | |
2b3798d5 NA |
602 | bond->params.mode = newval->value; |
603 | ||
72be35fe JP |
604 | return 0; |
605 | } | |
d9e32b21 | 606 | |
752d48b5 JP |
607 | static struct net_device *__bond_option_active_slave_get(struct bonding *bond, |
608 | struct slave *slave) | |
609 | { | |
610 | return USES_PRIMARY(bond->params.mode) && slave ? slave->dev : NULL; | |
611 | } | |
612 | ||
613 | struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) | |
614 | { | |
615 | struct slave *slave = rcu_dereference(bond->curr_active_slave); | |
616 | ||
617 | return __bond_option_active_slave_get(bond, slave); | |
618 | } | |
619 | ||
620 | struct net_device *bond_option_active_slave_get(struct bonding *bond) | |
621 | { | |
622 | return __bond_option_active_slave_get(bond, bond->curr_active_slave); | |
623 | } | |
624 | ||
d9e32b21 | 625 | int bond_option_active_slave_set(struct bonding *bond, |
d1fbd3ed | 626 | struct bond_opt_value *newval) |
d9e32b21 | 627 | { |
d1fbd3ed NA |
628 | char ifname[IFNAMSIZ] = { 0, }; |
629 | struct net_device *slave_dev; | |
d9e32b21 JP |
630 | int ret = 0; |
631 | ||
d1fbd3ed NA |
632 | sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */ |
633 | if (!strlen(ifname) || newval->string[0] == '\n') { | |
634 | slave_dev = NULL; | |
635 | } else { | |
636 | slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname); | |
637 | if (!slave_dev) | |
638 | return -ENODEV; | |
639 | } | |
640 | ||
d9e32b21 JP |
641 | if (slave_dev) { |
642 | if (!netif_is_bond_slave(slave_dev)) { | |
90194264 | 643 | pr_err("Device %s is not bonding slave\n", |
d9e32b21 JP |
644 | slave_dev->name); |
645 | return -EINVAL; | |
646 | } | |
647 | ||
648 | if (bond->dev != netdev_master_upper_dev_get(slave_dev)) { | |
90194264 | 649 | pr_err("%s: Device %s is not our slave\n", |
d9e32b21 JP |
650 | bond->dev->name, slave_dev->name); |
651 | return -EINVAL; | |
652 | } | |
653 | } | |
654 | ||
d9e32b21 | 655 | block_netpoll_tx(); |
d9e32b21 JP |
656 | write_lock_bh(&bond->curr_slave_lock); |
657 | ||
658 | /* check to see if we are clearing active */ | |
659 | if (!slave_dev) { | |
90194264 | 660 | pr_info("%s: Clearing current active slave\n", bond->dev->name); |
d9e32b21 JP |
661 | rcu_assign_pointer(bond->curr_active_slave, NULL); |
662 | bond_select_active_slave(bond); | |
663 | } else { | |
664 | struct slave *old_active = bond->curr_active_slave; | |
665 | struct slave *new_active = bond_slave_get_rtnl(slave_dev); | |
666 | ||
667 | BUG_ON(!new_active); | |
668 | ||
669 | if (new_active == old_active) { | |
670 | /* do nothing */ | |
90194264 | 671 | pr_info("%s: %s is already the current active slave\n", |
d9e32b21 JP |
672 | bond->dev->name, new_active->dev->name); |
673 | } else { | |
674 | if (old_active && (new_active->link == BOND_LINK_UP) && | |
675 | IS_UP(new_active->dev)) { | |
90194264 | 676 | pr_info("%s: Setting %s as active slave\n", |
d9e32b21 JP |
677 | bond->dev->name, new_active->dev->name); |
678 | bond_change_active_slave(bond, new_active); | |
679 | } else { | |
90194264 | 680 | pr_err("%s: Could not set %s as active slave; either %s is down or the link is down\n", |
d9e32b21 JP |
681 | bond->dev->name, new_active->dev->name, |
682 | new_active->dev->name); | |
683 | ret = -EINVAL; | |
684 | } | |
685 | } | |
686 | } | |
687 | ||
688 | write_unlock_bh(&bond->curr_slave_lock); | |
d9e32b21 | 689 | unblock_netpoll_tx(); |
d1fbd3ed | 690 | |
d9e32b21 JP |
691 | return ret; |
692 | } | |
eecdaa6e | 693 | |
b98d9c66 | 694 | int bond_option_miimon_set(struct bonding *bond, struct bond_opt_value *newval) |
eecdaa6e | 695 | { |
90194264 | 696 | pr_info("%s: Setting MII monitoring interval to %llu\n", |
b98d9c66 NA |
697 | bond->dev->name, newval->value); |
698 | bond->params.miimon = newval->value; | |
eecdaa6e | 699 | if (bond->params.updelay) |
90194264 | 700 | pr_info("%s: Note: Updating updelay (to %d) since it is a multiple of the miimon value\n", |
eecdaa6e | 701 | bond->dev->name, |
702 | bond->params.updelay * bond->params.miimon); | |
703 | if (bond->params.downdelay) | |
90194264 | 704 | pr_info("%s: Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n", |
eecdaa6e | 705 | bond->dev->name, |
706 | bond->params.downdelay * bond->params.miimon); | |
b98d9c66 | 707 | if (newval->value && bond->params.arp_interval) { |
90194264 | 708 | pr_info("%s: MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n", |
eecdaa6e | 709 | bond->dev->name); |
710 | bond->params.arp_interval = 0; | |
711 | if (bond->params.arp_validate) | |
712 | bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; | |
713 | } | |
714 | if (bond->dev->flags & IFF_UP) { | |
715 | /* If the interface is up, we may need to fire off | |
716 | * the MII timer. If the interface is down, the | |
717 | * timer will get fired off when the open function | |
718 | * is called. | |
719 | */ | |
b98d9c66 | 720 | if (!newval->value) { |
eecdaa6e | 721 | cancel_delayed_work_sync(&bond->mii_work); |
722 | } else { | |
723 | cancel_delayed_work_sync(&bond->arp_work); | |
724 | queue_delayed_work(bond->wq, &bond->mii_work, 0); | |
725 | } | |
726 | } | |
b98d9c66 | 727 | |
eecdaa6e | 728 | return 0; |
729 | } | |
25852e29 | 730 | |
e4994612 | 731 | int bond_option_updelay_set(struct bonding *bond, struct bond_opt_value *newval) |
25852e29 | 732 | { |
0681a282 NA |
733 | int value = newval->value; |
734 | ||
e4994612 | 735 | if (!bond->params.miimon) { |
25852e29 | 736 | pr_err("%s: Unable to set up delay as MII monitoring is disabled\n", |
737 | bond->dev->name); | |
738 | return -EPERM; | |
739 | } | |
0681a282 NA |
740 | if ((value % bond->params.miimon) != 0) { |
741 | pr_warn("%s: Warning: up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", | |
742 | bond->dev->name, value, | |
e4994612 | 743 | bond->params.miimon, |
0681a282 | 744 | (value / bond->params.miimon) * |
e4994612 | 745 | bond->params.miimon); |
25852e29 | 746 | } |
0681a282 | 747 | bond->params.updelay = value / bond->params.miimon; |
90194264 JP |
748 | pr_info("%s: Setting up delay to %d\n", |
749 | bond->dev->name, bond->params.updelay * bond->params.miimon); | |
25852e29 | 750 | |
751 | return 0; | |
752 | } | |
c7461f9b | 753 | |
25a9b54a NA |
754 | int bond_option_downdelay_set(struct bonding *bond, |
755 | struct bond_opt_value *newval) | |
c7461f9b | 756 | { |
0681a282 NA |
757 | int value = newval->value; |
758 | ||
25a9b54a | 759 | if (!bond->params.miimon) { |
c7461f9b | 760 | pr_err("%s: Unable to set down delay as MII monitoring is disabled\n", |
761 | bond->dev->name); | |
762 | return -EPERM; | |
763 | } | |
0681a282 NA |
764 | if ((value % bond->params.miimon) != 0) { |
765 | pr_warn("%s: Warning: down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n", | |
766 | bond->dev->name, value, | |
25a9b54a | 767 | bond->params.miimon, |
0681a282 | 768 | (value / bond->params.miimon) * |
25a9b54a | 769 | bond->params.miimon); |
c7461f9b | 770 | } |
0681a282 | 771 | bond->params.downdelay = value / bond->params.miimon; |
90194264 JP |
772 | pr_info("%s: Setting down delay to %d\n", |
773 | bond->dev->name, bond->params.downdelay * bond->params.miimon); | |
c7461f9b | 774 | |
775 | return 0; | |
776 | } | |
9f53e14e | 777 | |
0fff0608 NA |
778 | int bond_option_use_carrier_set(struct bonding *bond, |
779 | struct bond_opt_value *newval) | |
9f53e14e | 780 | { |
90194264 | 781 | pr_info("%s: Setting use_carrier to %llu\n", |
0fff0608 NA |
782 | bond->dev->name, newval->value); |
783 | bond->params.use_carrier = newval->value; | |
9f53e14e | 784 | |
785 | return 0; | |
786 | } | |
06151dbc | 787 | |
7bdb04ed NA |
788 | int bond_option_arp_interval_set(struct bonding *bond, |
789 | struct bond_opt_value *newval) | |
06151dbc | 790 | { |
90194264 | 791 | pr_info("%s: Setting ARP monitoring interval to %llu\n", |
7bdb04ed NA |
792 | bond->dev->name, newval->value); |
793 | bond->params.arp_interval = newval->value; | |
794 | if (newval->value) { | |
06151dbc | 795 | if (bond->params.miimon) { |
90194264 | 796 | pr_info("%s: ARP monitoring cannot be used with MII monitoring. %s Disabling MII monitoring\n", |
06151dbc | 797 | bond->dev->name, bond->dev->name); |
798 | bond->params.miimon = 0; | |
799 | } | |
800 | if (!bond->params.arp_targets[0]) | |
90194264 | 801 | pr_info("%s: ARP monitoring has been set up, but no ARP targets have been specified\n", |
06151dbc | 802 | bond->dev->name); |
803 | } | |
804 | if (bond->dev->flags & IFF_UP) { | |
805 | /* If the interface is up, we may need to fire off | |
806 | * the ARP timer. If the interface is down, the | |
807 | * timer will get fired off when the open function | |
808 | * is called. | |
809 | */ | |
7bdb04ed | 810 | if (!newval->value) { |
06151dbc | 811 | if (bond->params.arp_validate) |
812 | bond->recv_probe = NULL; | |
813 | cancel_delayed_work_sync(&bond->arp_work); | |
814 | } else { | |
815 | /* arp_validate can be set only in active-backup mode */ | |
3fe68df9 | 816 | bond->recv_probe = bond_arp_rcv; |
06151dbc | 817 | cancel_delayed_work_sync(&bond->mii_work); |
818 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
819 | } | |
820 | } | |
821 | ||
822 | return 0; | |
823 | } | |
7f28fa10 | 824 | |
825 | static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot, | |
826 | __be32 target, | |
827 | unsigned long last_rx) | |
828 | { | |
829 | __be32 *targets = bond->params.arp_targets; | |
830 | struct list_head *iter; | |
831 | struct slave *slave; | |
832 | ||
833 | if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) { | |
834 | bond_for_each_slave(bond, slave, iter) | |
835 | slave->target_last_arp_rx[slot] = last_rx; | |
836 | targets[slot] = target; | |
837 | } | |
838 | } | |
839 | ||
840 | static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) | |
841 | { | |
842 | __be32 *targets = bond->params.arp_targets; | |
843 | int ind; | |
844 | ||
845 | if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) { | |
846 | pr_err("%s: invalid ARP target %pI4 specified for addition\n", | |
847 | bond->dev->name, &target); | |
848 | return -EINVAL; | |
849 | } | |
850 | ||
851 | if (bond_get_targets_ip(targets, target) != -1) { /* dup */ | |
852 | pr_err("%s: ARP target %pI4 is already present\n", | |
853 | bond->dev->name, &target); | |
854 | return -EINVAL; | |
855 | } | |
856 | ||
857 | ind = bond_get_targets_ip(targets, 0); /* first free slot */ | |
858 | if (ind == -1) { | |
90194264 | 859 | pr_err("%s: ARP target table is full!\n", bond->dev->name); |
7f28fa10 | 860 | return -EINVAL; |
861 | } | |
862 | ||
90194264 | 863 | pr_info("%s: Adding ARP target %pI4\n", bond->dev->name, &target); |
7f28fa10 | 864 | |
865 | _bond_options_arp_ip_target_set(bond, ind, target, jiffies); | |
866 | ||
867 | return 0; | |
868 | } | |
869 | ||
870 | int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) | |
871 | { | |
872 | int ret; | |
873 | ||
874 | /* not to race with bond_arp_rcv */ | |
875 | write_lock_bh(&bond->lock); | |
876 | ret = _bond_option_arp_ip_target_add(bond, target); | |
877 | write_unlock_bh(&bond->lock); | |
878 | ||
879 | return ret; | |
880 | } | |
881 | ||
882 | int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target) | |
883 | { | |
884 | __be32 *targets = bond->params.arp_targets; | |
885 | struct list_head *iter; | |
886 | struct slave *slave; | |
887 | unsigned long *targets_rx; | |
888 | int ind, i; | |
889 | ||
890 | if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) { | |
891 | pr_err("%s: invalid ARP target %pI4 specified for removal\n", | |
892 | bond->dev->name, &target); | |
893 | return -EINVAL; | |
894 | } | |
895 | ||
896 | ind = bond_get_targets_ip(targets, target); | |
897 | if (ind == -1) { | |
90194264 | 898 | pr_err("%s: unable to remove nonexistent ARP target %pI4\n", |
7f28fa10 | 899 | bond->dev->name, &target); |
900 | return -EINVAL; | |
901 | } | |
902 | ||
903 | if (ind == 0 && !targets[1] && bond->params.arp_interval) | |
90194264 | 904 | pr_warn("%s: Removing last arp target with arp_interval on\n", |
7f28fa10 | 905 | bond->dev->name); |
906 | ||
90194264 | 907 | pr_info("%s: Removing ARP target %pI4\n", bond->dev->name, &target); |
7f28fa10 | 908 | |
909 | /* not to race with bond_arp_rcv */ | |
910 | write_lock_bh(&bond->lock); | |
911 | ||
912 | bond_for_each_slave(bond, slave, iter) { | |
913 | targets_rx = slave->target_last_arp_rx; | |
914 | for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) | |
915 | targets_rx[i] = targets_rx[i+1]; | |
916 | targets_rx[i] = 0; | |
917 | } | |
918 | for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) | |
919 | targets[i] = targets[i+1]; | |
920 | targets[i] = 0; | |
921 | ||
922 | write_unlock_bh(&bond->lock); | |
923 | ||
924 | return 0; | |
925 | } | |
926 | ||
4fb0ef58 | 927 | void bond_option_arp_ip_targets_clear(struct bonding *bond) |
7f28fa10 | 928 | { |
4fb0ef58 | 929 | int i; |
7f28fa10 | 930 | |
931 | /* not to race with bond_arp_rcv */ | |
932 | write_lock_bh(&bond->lock); | |
7f28fa10 | 933 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) |
934 | _bond_options_arp_ip_target_set(bond, i, 0, 0); | |
4fb0ef58 NA |
935 | write_unlock_bh(&bond->lock); |
936 | } | |
7f28fa10 | 937 | |
4fb0ef58 NA |
938 | int bond_option_arp_ip_targets_set(struct bonding *bond, |
939 | struct bond_opt_value *newval) | |
940 | { | |
941 | int ret = -EPERM; | |
942 | __be32 target; | |
943 | ||
944 | if (newval->string) { | |
945 | if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) { | |
946 | pr_err("%s: invalid ARP target %pI4 specified\n", | |
947 | bond->dev->name, &target); | |
948 | return ret; | |
949 | } | |
950 | if (newval->string[0] == '+') | |
951 | ret = bond_option_arp_ip_target_add(bond, target); | |
952 | else if (newval->string[0] == '-') | |
953 | ret = bond_option_arp_ip_target_rem(bond, target); | |
954 | else | |
90194264 | 955 | pr_err("no command found in arp_ip_targets file for bond %s - use +<addr> or -<addr>\n", |
4fb0ef58 NA |
956 | bond->dev->name); |
957 | } else { | |
958 | target = newval->value; | |
959 | ret = bond_option_arp_ip_target_add(bond, target); | |
7f28fa10 | 960 | } |
961 | ||
7f28fa10 | 962 | return ret; |
963 | } | |
29c49482 | 964 | |
16228881 NA |
965 | int bond_option_arp_validate_set(struct bonding *bond, |
966 | struct bond_opt_value *newval) | |
29c49482 | 967 | { |
90194264 | 968 | pr_info("%s: Setting arp_validate to %s (%llu)\n", |
16228881 | 969 | bond->dev->name, newval->string, newval->value); |
29c49482 | 970 | |
971 | if (bond->dev->flags & IFF_UP) { | |
16228881 | 972 | if (!newval->value) |
29c49482 | 973 | bond->recv_probe = NULL; |
974 | else if (bond->params.arp_interval) | |
975 | bond->recv_probe = bond_arp_rcv; | |
976 | } | |
16228881 | 977 | bond->params.arp_validate = newval->value; |
29c49482 | 978 | |
979 | return 0; | |
980 | } | |
d5c84254 | 981 | |
edf36b24 NA |
982 | int bond_option_arp_all_targets_set(struct bonding *bond, |
983 | struct bond_opt_value *newval) | |
d5c84254 | 984 | { |
90194264 | 985 | pr_info("%s: Setting arp_all_targets to %s (%llu)\n", |
edf36b24 NA |
986 | bond->dev->name, newval->string, newval->value); |
987 | bond->params.arp_all_targets = newval->value; | |
d5c84254 | 988 | |
989 | return 0; | |
990 | } | |
0a98a0d1 | 991 | |
180222f0 | 992 | int bond_option_primary_set(struct bonding *bond, struct bond_opt_value *newval) |
0a98a0d1 | 993 | { |
180222f0 | 994 | char *p, *primary = newval->string; |
0a98a0d1 | 995 | struct list_head *iter; |
996 | struct slave *slave; | |
0a98a0d1 | 997 | |
998 | block_netpoll_tx(); | |
999 | read_lock(&bond->lock); | |
1000 | write_lock_bh(&bond->curr_slave_lock); | |
1001 | ||
180222f0 NA |
1002 | p = strchr(primary, '\n'); |
1003 | if (p) | |
1004 | *p = '\0'; | |
0a98a0d1 | 1005 | /* check to see if we are clearing primary */ |
1006 | if (!strlen(primary)) { | |
90194264 | 1007 | pr_info("%s: Setting primary slave to None\n", bond->dev->name); |
0a98a0d1 | 1008 | bond->primary_slave = NULL; |
1009 | memset(bond->params.primary, 0, sizeof(bond->params.primary)); | |
1010 | bond_select_active_slave(bond); | |
1011 | goto out; | |
1012 | } | |
1013 | ||
1014 | bond_for_each_slave(bond, slave, iter) { | |
1015 | if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) { | |
90194264 | 1016 | pr_info("%s: Setting %s as primary slave\n", |
0a98a0d1 | 1017 | bond->dev->name, slave->dev->name); |
1018 | bond->primary_slave = slave; | |
1019 | strcpy(bond->params.primary, slave->dev->name); | |
1020 | bond_select_active_slave(bond); | |
1021 | goto out; | |
1022 | } | |
1023 | } | |
1024 | ||
c59ab673 | 1025 | if (bond->primary_slave) { |
90194264 | 1026 | pr_info("%s: Setting primary slave to None\n", bond->dev->name); |
c59ab673 | 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 | ||
90194264 | 1033 | pr_info("%s: Recording %s as primary, but it has not been enslaved to %s yet\n", |
0a98a0d1 | 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 | { |
90194264 | 1047 | pr_info("%s: Setting primary_reselect to %s (%llu)\n", |
388d3a6d NA |
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 | { |
90194264 | 1063 | pr_info("%s: Setting fail_over_mac to %s (%llu)\n", |
1df6b6aa NA |
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 | { |
90194264 | 1073 | pr_info("%s: Setting xmit hash policy to %s (%llu)\n", |
a4b32ce7 NA |
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 | { |
90194264 | 1083 | pr_info("%s: Setting resend_igmp to %llu\n", |
105c8fb6 NA |
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 | { |
90194264 | 1157 | pr_info("%s: Setting LACP rate to %s (%llu)\n", |
d3131de7 NA |
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 | { |
90194264 | 1168 | pr_info("%s: Setting ad_select to %s (%llu)\n", |
9e5f5eeb NA |
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 */ | |
c313c89e | 1198 | if (!dev_valid_name(newval->string) || |
24089ba1 NA |
1199 | qid > bond->dev->real_num_tx_queues) |
1200 | goto err_no_cmd; | |
1201 | ||
1202 | /* Get the pointer to that interface if it exists */ | |
1203 | sdev = __dev_get_by_name(dev_net(bond->dev), newval->string); | |
1204 | if (!sdev) | |
1205 | goto err_no_cmd; | |
1206 | ||
1207 | /* Search for thes slave and check for duplicate qids */ | |
1208 | update_slave = NULL; | |
1209 | bond_for_each_slave(bond, slave, iter) { | |
1210 | if (sdev == slave->dev) | |
1211 | /* We don't need to check the matching | |
1212 | * slave for dups, since we're overwriting it | |
1213 | */ | |
1214 | update_slave = slave; | |
1215 | else if (qid && qid == slave->queue_id) { | |
1216 | goto err_no_cmd; | |
1217 | } | |
1218 | } | |
1219 | ||
1220 | if (!update_slave) | |
1221 | goto err_no_cmd; | |
1222 | ||
1223 | /* Actually set the qids for the slave */ | |
1224 | update_slave->queue_id = qid; | |
1225 | ||
1226 | out: | |
1227 | return ret; | |
1228 | ||
1229 | err_no_cmd: | |
90194264 | 1230 | pr_info("invalid input for queue_id set for %s\n", bond->dev->name); |
24089ba1 NA |
1231 | ret = -EPERM; |
1232 | goto out; | |
1233 | ||
1234 | } | |
0e2e5b66 NA |
1235 | |
1236 | int bond_option_slaves_set(struct bonding *bond, struct bond_opt_value *newval) | |
1237 | { | |
1238 | char command[IFNAMSIZ + 1] = { 0, }; | |
1239 | struct net_device *dev; | |
1240 | char *ifname; | |
1241 | int ret; | |
1242 | ||
1243 | sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/ | |
1244 | ifname = command + 1; | |
1245 | if ((strlen(command) <= 1) || | |
1246 | !dev_valid_name(ifname)) | |
1247 | goto err_no_cmd; | |
1248 | ||
1249 | dev = __dev_get_by_name(dev_net(bond->dev), ifname); | |
1250 | if (!dev) { | |
90194264 | 1251 | pr_info("%s: interface %s does not exist!\n", |
0e2e5b66 NA |
1252 | bond->dev->name, ifname); |
1253 | ret = -ENODEV; | |
1254 | goto out; | |
1255 | } | |
1256 | ||
1257 | switch (command[0]) { | |
1258 | case '+': | |
90194264 | 1259 | pr_info("%s: Adding slave %s\n", bond->dev->name, dev->name); |
0e2e5b66 NA |
1260 | ret = bond_enslave(bond->dev, dev); |
1261 | break; | |
1262 | ||
1263 | case '-': | |
90194264 | 1264 | pr_info("%s: Removing slave %s\n", bond->dev->name, dev->name); |
0e2e5b66 NA |
1265 | ret = bond_release(bond->dev, dev); |
1266 | break; | |
1267 | ||
1268 | default: | |
1269 | goto err_no_cmd; | |
1270 | } | |
1271 | ||
1272 | out: | |
1273 | return ret; | |
1274 | ||
1275 | err_no_cmd: | |
90194264 | 1276 | pr_err("no command found in slaves file for bond %s - use +ifname or -ifname\n", |
0e2e5b66 NA |
1277 | bond->dev->name); |
1278 | ret = -EPERM; | |
1279 | goto out; | |
1280 | } |