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 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", | |
13ac34a8 VF |
154 | .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) | |
155 | BIT(BOND_MODE_ALB), | |
16228881 NA |
156 | .values = bond_arp_validate_tbl, |
157 | .set = bond_option_arp_validate_set | |
158 | }, | |
edf36b24 NA |
159 | [BOND_OPT_ARP_ALL_TARGETS] = { |
160 | .id = BOND_OPT_ARP_ALL_TARGETS, | |
161 | .name = "arp_all_targets", | |
162 | .desc = "fail on any/all arp targets timeout", | |
163 | .values = bond_arp_all_targets_tbl, | |
164 | .set = bond_option_arp_all_targets_set | |
165 | }, | |
1df6b6aa NA |
166 | [BOND_OPT_FAIL_OVER_MAC] = { |
167 | .id = BOND_OPT_FAIL_OVER_MAC, | |
168 | .name = "fail_over_mac", | |
169 | .desc = "For active-backup, do not set all slaves to the same MAC", | |
170 | .flags = BOND_OPTFLAG_NOSLAVES, | |
171 | .values = bond_fail_over_mac_tbl, | |
172 | .set = bond_option_fail_over_mac_set | |
173 | }, | |
7bdb04ed NA |
174 | [BOND_OPT_ARP_INTERVAL] = { |
175 | .id = BOND_OPT_ARP_INTERVAL, | |
176 | .name = "arp_interval", | |
177 | .desc = "arp interval in milliseconds", | |
178 | .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) | | |
179 | BIT(BOND_MODE_ALB), | |
180 | .values = bond_intmax_tbl, | |
181 | .set = bond_option_arp_interval_set | |
182 | }, | |
4fb0ef58 NA |
183 | [BOND_OPT_ARP_TARGETS] = { |
184 | .id = BOND_OPT_ARP_TARGETS, | |
185 | .name = "arp_ip_target", | |
186 | .desc = "arp targets in n.n.n.n form", | |
187 | .flags = BOND_OPTFLAG_RAWVAL, | |
188 | .set = bond_option_arp_ip_targets_set | |
189 | }, | |
25a9b54a NA |
190 | [BOND_OPT_DOWNDELAY] = { |
191 | .id = BOND_OPT_DOWNDELAY, | |
192 | .name = "downdelay", | |
193 | .desc = "Delay before considering link down, in milliseconds", | |
194 | .values = bond_intmax_tbl, | |
195 | .set = bond_option_downdelay_set | |
196 | }, | |
e4994612 NA |
197 | [BOND_OPT_UPDELAY] = { |
198 | .id = BOND_OPT_UPDELAY, | |
199 | .name = "updelay", | |
200 | .desc = "Delay before considering link up, in milliseconds", | |
201 | .values = bond_intmax_tbl, | |
202 | .set = bond_option_updelay_set | |
203 | }, | |
d3131de7 NA |
204 | [BOND_OPT_LACP_RATE] = { |
205 | .id = BOND_OPT_LACP_RATE, | |
206 | .name = "lacp_rate", | |
207 | .desc = "LACPDU tx rate to request from 802.3ad partner", | |
208 | .flags = BOND_OPTFLAG_IFDOWN, | |
209 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)), | |
210 | .values = bond_lacp_rate_tbl, | |
211 | .set = bond_option_lacp_rate_set | |
212 | }, | |
633ddc9e NA |
213 | [BOND_OPT_MINLINKS] = { |
214 | .id = BOND_OPT_MINLINKS, | |
215 | .name = "min_links", | |
216 | .desc = "Minimum number of available links before turning on carrier", | |
217 | .values = bond_intmax_tbl, | |
218 | .set = bond_option_min_links_set | |
219 | }, | |
9e5f5eeb NA |
220 | [BOND_OPT_AD_SELECT] = { |
221 | .id = BOND_OPT_AD_SELECT, | |
222 | .name = "ad_select", | |
223 | .desc = "803.ad aggregation selection logic", | |
224 | .flags = BOND_OPTFLAG_IFDOWN, | |
225 | .values = bond_ad_select_tbl, | |
226 | .set = bond_option_ad_select_set | |
227 | }, | |
ef56becb NA |
228 | [BOND_OPT_NUM_PEER_NOTIF] = { |
229 | .id = BOND_OPT_NUM_PEER_NOTIF, | |
230 | .name = "num_unsol_na", | |
231 | .desc = "Number of peer notifications to send on failover event", | |
232 | .values = bond_num_peer_notif_tbl, | |
233 | .set = bond_option_num_peer_notif_set | |
234 | }, | |
b98d9c66 NA |
235 | [BOND_OPT_MIIMON] = { |
236 | .id = BOND_OPT_MIIMON, | |
237 | .name = "miimon", | |
238 | .desc = "Link check interval in milliseconds", | |
239 | .values = bond_intmax_tbl, | |
240 | .set = bond_option_miimon_set | |
241 | }, | |
180222f0 NA |
242 | [BOND_OPT_PRIMARY] = { |
243 | .id = BOND_OPT_PRIMARY, | |
244 | .name = "primary", | |
245 | .desc = "Primary network device to use", | |
246 | .flags = BOND_OPTFLAG_RAWVAL, | |
247 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) | | |
248 | BIT(BOND_MODE_TLB) | | |
249 | BIT(BOND_MODE_ALB)), | |
250 | .set = bond_option_primary_set | |
251 | }, | |
388d3a6d NA |
252 | [BOND_OPT_PRIMARY_RESELECT] = { |
253 | .id = BOND_OPT_PRIMARY_RESELECT, | |
254 | .name = "primary_reselect", | |
255 | .desc = "Reselect primary slave once it comes up", | |
256 | .values = bond_primary_reselect_tbl, | |
257 | .set = bond_option_primary_reselect_set | |
258 | }, | |
0fff0608 NA |
259 | [BOND_OPT_USE_CARRIER] = { |
260 | .id = BOND_OPT_USE_CARRIER, | |
261 | .name = "use_carrier", | |
262 | .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon", | |
263 | .values = bond_use_carrier_tbl, | |
264 | .set = bond_option_use_carrier_set | |
265 | }, | |
d1fbd3ed NA |
266 | [BOND_OPT_ACTIVE_SLAVE] = { |
267 | .id = BOND_OPT_ACTIVE_SLAVE, | |
268 | .name = "active_slave", | |
269 | .desc = "Currently active slave", | |
270 | .flags = BOND_OPTFLAG_RAWVAL, | |
271 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) | | |
272 | BIT(BOND_MODE_TLB) | | |
273 | BIT(BOND_MODE_ALB)), | |
274 | .set = bond_option_active_slave_set | |
275 | }, | |
24089ba1 NA |
276 | [BOND_OPT_QUEUE_ID] = { |
277 | .id = BOND_OPT_QUEUE_ID, | |
278 | .name = "queue_id", | |
279 | .desc = "Set queue id of a slave", | |
280 | .flags = BOND_OPTFLAG_RAWVAL, | |
281 | .set = bond_option_queue_id_set | |
282 | }, | |
3df01162 NA |
283 | [BOND_OPT_ALL_SLAVES_ACTIVE] = { |
284 | .id = BOND_OPT_ALL_SLAVES_ACTIVE, | |
285 | .name = "all_slaves_active", | |
286 | .desc = "Keep all frames received on an interface by setting active flag for all slaves", | |
287 | .values = bond_all_slaves_active_tbl, | |
288 | .set = bond_option_all_slaves_active_set | |
289 | }, | |
105c8fb6 NA |
290 | [BOND_OPT_RESEND_IGMP] = { |
291 | .id = BOND_OPT_RESEND_IGMP, | |
292 | .name = "resend_igmp", | |
293 | .desc = "Number of IGMP membership reports to send on link failure", | |
294 | .values = bond_resend_igmp_tbl, | |
295 | .set = bond_option_resend_igmp_set | |
296 | }, | |
4325b374 NA |
297 | [BOND_OPT_LP_INTERVAL] = { |
298 | .id = BOND_OPT_LP_INTERVAL, | |
299 | .name = "lp_interval", | |
300 | .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch", | |
301 | .values = bond_lp_interval_tbl, | |
302 | .set = bond_option_lp_interval_set | |
303 | }, | |
0e2e5b66 NA |
304 | [BOND_OPT_SLAVES] = { |
305 | .id = BOND_OPT_SLAVES, | |
306 | .name = "slaves", | |
307 | .desc = "Slave membership management", | |
308 | .flags = BOND_OPTFLAG_RAWVAL, | |
309 | .set = bond_option_slaves_set | |
310 | }, | |
09117362 NA |
311 | { } |
312 | }; | |
313 | ||
314 | /* Searches for a value in opt's values[] table */ | |
315 | struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val) | |
316 | { | |
317 | struct bond_option *opt; | |
318 | int i; | |
319 | ||
320 | opt = bond_opt_get(option); | |
321 | if (WARN_ON(!opt)) | |
322 | return NULL; | |
323 | for (i = 0; opt->values && opt->values[i].string; i++) | |
324 | if (opt->values[i].value == val) | |
325 | return &opt->values[i]; | |
326 | ||
327 | return NULL; | |
328 | } | |
329 | ||
330 | /* Searches for a value in opt's values[] table which matches the flagmask */ | |
331 | static struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt, | |
332 | u32 flagmask) | |
333 | { | |
334 | int i; | |
335 | ||
336 | for (i = 0; opt->values && opt->values[i].string; i++) | |
337 | if (opt->values[i].flags & flagmask) | |
338 | return &opt->values[i]; | |
339 | ||
340 | return NULL; | |
341 | } | |
342 | ||
343 | /* If maxval is missing then there's no range to check. In case minval is | |
344 | * missing then it's considered to be 0. | |
345 | */ | |
346 | static bool bond_opt_check_range(const struct bond_option *opt, u64 val) | |
347 | { | |
348 | struct bond_opt_value *minval, *maxval; | |
349 | ||
350 | minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); | |
351 | maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); | |
352 | if (!maxval || (minval && val < minval->value) || val > maxval->value) | |
353 | return false; | |
354 | ||
355 | return true; | |
356 | } | |
357 | ||
358 | /** | |
359 | * bond_opt_parse - parse option value | |
360 | * @opt: the option to parse against | |
361 | * @val: value to parse | |
362 | * | |
363 | * This function tries to extract the value from @val and check if it's | |
364 | * a possible match for the option and returns NULL if a match isn't found, | |
365 | * or the struct_opt_value that matched. It also strips the new line from | |
366 | * @val->string if it's present. | |
367 | */ | |
368 | struct bond_opt_value *bond_opt_parse(const struct bond_option *opt, | |
369 | struct bond_opt_value *val) | |
370 | { | |
371 | char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, }; | |
372 | struct bond_opt_value *tbl, *ret = NULL; | |
373 | bool checkval; | |
374 | int i, rv; | |
375 | ||
376 | /* No parsing if the option wants a raw val */ | |
377 | if (opt->flags & BOND_OPTFLAG_RAWVAL) | |
378 | return val; | |
379 | ||
380 | tbl = opt->values; | |
381 | if (!tbl) | |
382 | goto out; | |
383 | ||
384 | /* ULLONG_MAX is used to bypass string processing */ | |
385 | checkval = val->value != ULLONG_MAX; | |
386 | if (!checkval) { | |
387 | if (!val->string) | |
388 | goto out; | |
389 | p = strchr(val->string, '\n'); | |
390 | if (p) | |
391 | *p = '\0'; | |
392 | for (p = val->string; *p; p++) | |
393 | if (!(isdigit(*p) || isspace(*p))) | |
394 | break; | |
395 | /* The following code extracts the string to match or the value | |
396 | * and sets checkval appropriately | |
397 | */ | |
398 | if (*p) { | |
399 | rv = sscanf(val->string, "%32s", valstr); | |
400 | } else { | |
401 | rv = sscanf(val->string, "%llu", &val->value); | |
402 | checkval = true; | |
403 | } | |
404 | if (!rv) | |
405 | goto out; | |
406 | } | |
407 | ||
408 | for (i = 0; tbl[i].string; i++) { | |
409 | /* Check for exact match */ | |
410 | if (checkval) { | |
411 | if (val->value == tbl[i].value) | |
412 | ret = &tbl[i]; | |
413 | } else { | |
414 | if (!strcmp(valstr, "default") && | |
415 | (tbl[i].flags & BOND_VALFLAG_DEFAULT)) | |
416 | ret = &tbl[i]; | |
417 | ||
418 | if (!strcmp(valstr, tbl[i].string)) | |
419 | ret = &tbl[i]; | |
420 | } | |
421 | /* Found an exact match */ | |
422 | if (ret) | |
423 | goto out; | |
424 | } | |
425 | /* Possible range match */ | |
426 | if (checkval && bond_opt_check_range(opt, val->value)) | |
427 | ret = val; | |
428 | out: | |
429 | return ret; | |
430 | } | |
431 | ||
432 | /* Check opt's dependencies against bond mode and currently set options */ | |
433 | static int bond_opt_check_deps(struct bonding *bond, | |
434 | const struct bond_option *opt) | |
435 | { | |
436 | struct bond_params *params = &bond->params; | |
437 | ||
438 | if (test_bit(params->mode, &opt->unsuppmodes)) | |
439 | return -EACCES; | |
440 | if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond)) | |
441 | return -ENOTEMPTY; | |
442 | if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP)) | |
443 | return -EBUSY; | |
444 | ||
445 | return 0; | |
446 | } | |
447 | ||
448 | static void bond_opt_dep_print(struct bonding *bond, | |
449 | const struct bond_option *opt) | |
450 | { | |
2b3798d5 | 451 | struct bond_opt_value *modeval; |
09117362 NA |
452 | struct bond_params *params; |
453 | ||
454 | params = &bond->params; | |
2b3798d5 | 455 | modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode); |
09117362 | 456 | if (test_bit(params->mode, &opt->unsuppmodes)) |
2b3798d5 NA |
457 | pr_err("%s: option %s: mode dependency failed, not supported in mode %s(%llu)\n", |
458 | bond->dev->name, opt->name, | |
459 | modeval->string, modeval->value); | |
09117362 NA |
460 | } |
461 | ||
462 | static void bond_opt_error_interpret(struct bonding *bond, | |
463 | const struct bond_option *opt, | |
464 | int error, struct bond_opt_value *val) | |
465 | { | |
466 | struct bond_opt_value *minval, *maxval; | |
467 | char *p; | |
468 | ||
469 | switch (error) { | |
470 | case -EINVAL: | |
471 | if (val) { | |
472 | if (val->string) { | |
473 | /* sometimes RAWVAL opts may have new lines */ | |
474 | p = strchr(val->string, '\n'); | |
475 | if (p) | |
476 | *p = '\0'; | |
90194264 | 477 | pr_err("%s: option %s: invalid value (%s)\n", |
09117362 NA |
478 | bond->dev->name, opt->name, val->string); |
479 | } else { | |
90194264 | 480 | pr_err("%s: option %s: invalid value (%llu)\n", |
09117362 NA |
481 | bond->dev->name, opt->name, val->value); |
482 | } | |
483 | } | |
484 | minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); | |
485 | maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); | |
486 | if (!maxval) | |
487 | break; | |
90194264 | 488 | pr_err("%s: option %s: allowed values %llu - %llu\n", |
09117362 NA |
489 | bond->dev->name, opt->name, minval ? minval->value : 0, |
490 | maxval->value); | |
491 | break; | |
492 | case -EACCES: | |
493 | bond_opt_dep_print(bond, opt); | |
494 | break; | |
495 | case -ENOTEMPTY: | |
90194264 | 496 | pr_err("%s: option %s: unable to set because the bond device has slaves\n", |
09117362 NA |
497 | bond->dev->name, opt->name); |
498 | break; | |
499 | case -EBUSY: | |
90194264 | 500 | pr_err("%s: option %s: unable to set because the bond device is up\n", |
09117362 NA |
501 | bond->dev->name, opt->name); |
502 | break; | |
503 | default: | |
504 | break; | |
505 | } | |
506 | } | |
507 | ||
508 | /** | |
509 | * __bond_opt_set - set a bonding option | |
510 | * @bond: target bond device | |
511 | * @option: option to set | |
512 | * @val: value to set it to | |
513 | * | |
514 | * This function is used to change the bond's option value, it can be | |
515 | * used for both enabling/changing an option and for disabling it. RTNL lock | |
516 | * must be obtained before calling this function. | |
517 | */ | |
518 | int __bond_opt_set(struct bonding *bond, | |
519 | unsigned int option, struct bond_opt_value *val) | |
520 | { | |
521 | struct bond_opt_value *retval = NULL; | |
522 | const struct bond_option *opt; | |
523 | int ret = -ENOENT; | |
524 | ||
525 | ASSERT_RTNL(); | |
526 | ||
527 | opt = bond_opt_get(option); | |
528 | if (WARN_ON(!val) || WARN_ON(!opt)) | |
529 | goto out; | |
530 | ret = bond_opt_check_deps(bond, opt); | |
531 | if (ret) | |
532 | goto out; | |
533 | retval = bond_opt_parse(opt, val); | |
534 | if (!retval) { | |
535 | ret = -EINVAL; | |
536 | goto out; | |
537 | } | |
538 | ret = opt->set(bond, retval); | |
539 | out: | |
540 | if (ret) | |
541 | bond_opt_error_interpret(bond, opt, ret, val); | |
542 | ||
543 | return ret; | |
544 | } | |
545 | ||
546 | /** | |
547 | * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set | |
548 | * @bond: target bond device | |
549 | * @option: option to set | |
550 | * @buf: value to set it to | |
551 | * | |
552 | * This function tries to acquire RTNL without blocking and if successful | |
553 | * calls __bond_opt_set. It is mainly used for sysfs option manipulation. | |
554 | */ | |
555 | int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf) | |
556 | { | |
557 | struct bond_opt_value optval; | |
558 | int ret; | |
559 | ||
560 | if (!rtnl_trylock()) | |
561 | return restart_syscall(); | |
562 | bond_opt_initstr(&optval, buf); | |
563 | ret = __bond_opt_set(bond, option, &optval); | |
564 | rtnl_unlock(); | |
565 | ||
566 | return ret; | |
567 | } | |
568 | ||
569 | /** | |
570 | * bond_opt_get - get a pointer to an option | |
571 | * @option: option for which to return a pointer | |
572 | * | |
573 | * This function checks if option is valid and if so returns a pointer | |
574 | * to its entry in the bond_opts[] option array. | |
575 | */ | |
576 | struct bond_option *bond_opt_get(unsigned int option) | |
577 | { | |
578 | if (!BOND_OPT_VALID(option)) | |
579 | return NULL; | |
580 | ||
581 | return &bond_opts[option]; | |
582 | } | |
583 | ||
2b3798d5 | 584 | int bond_option_mode_set(struct bonding *bond, struct bond_opt_value *newval) |
72be35fe | 585 | { |
2b3798d5 | 586 | if (BOND_NO_USES_ARP(newval->value) && bond->params.arp_interval) { |
fe9d04af | 587 | pr_info("%s: %s mode is incompatible with arp monitoring, start mii monitoring\n", |
2b3798d5 | 588 | bond->dev->name, newval->string); |
fe9d04af | 589 | /* disable arp monitoring */ |
590 | bond->params.arp_interval = 0; | |
591 | /* set miimon to default value */ | |
592 | bond->params.miimon = BOND_DEFAULT_MIIMON; | |
90194264 | 593 | pr_info("%s: Setting MII monitoring interval to %d\n", |
fe9d04af | 594 | bond->dev->name, bond->params.miimon); |
72be35fe JP |
595 | } |
596 | ||
597 | /* don't cache arp_validate between modes */ | |
598 | bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; | |
2b3798d5 NA |
599 | bond->params.mode = newval->value; |
600 | ||
72be35fe JP |
601 | return 0; |
602 | } | |
d9e32b21 | 603 | |
752d48b5 JP |
604 | static struct net_device *__bond_option_active_slave_get(struct bonding *bond, |
605 | struct slave *slave) | |
606 | { | |
607 | return USES_PRIMARY(bond->params.mode) && slave ? slave->dev : NULL; | |
608 | } | |
609 | ||
610 | struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) | |
611 | { | |
612 | struct slave *slave = rcu_dereference(bond->curr_active_slave); | |
613 | ||
614 | return __bond_option_active_slave_get(bond, slave); | |
615 | } | |
616 | ||
617 | struct net_device *bond_option_active_slave_get(struct bonding *bond) | |
618 | { | |
619 | return __bond_option_active_slave_get(bond, bond->curr_active_slave); | |
620 | } | |
621 | ||
d9e32b21 | 622 | int bond_option_active_slave_set(struct bonding *bond, |
d1fbd3ed | 623 | struct bond_opt_value *newval) |
d9e32b21 | 624 | { |
d1fbd3ed NA |
625 | char ifname[IFNAMSIZ] = { 0, }; |
626 | struct net_device *slave_dev; | |
d9e32b21 JP |
627 | int ret = 0; |
628 | ||
d1fbd3ed NA |
629 | sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */ |
630 | if (!strlen(ifname) || newval->string[0] == '\n') { | |
631 | slave_dev = NULL; | |
632 | } else { | |
633 | slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname); | |
634 | if (!slave_dev) | |
635 | return -ENODEV; | |
636 | } | |
637 | ||
d9e32b21 JP |
638 | if (slave_dev) { |
639 | if (!netif_is_bond_slave(slave_dev)) { | |
90194264 | 640 | pr_err("Device %s is not bonding slave\n", |
d9e32b21 JP |
641 | slave_dev->name); |
642 | return -EINVAL; | |
643 | } | |
644 | ||
645 | if (bond->dev != netdev_master_upper_dev_get(slave_dev)) { | |
90194264 | 646 | pr_err("%s: Device %s is not our slave\n", |
d9e32b21 JP |
647 | bond->dev->name, slave_dev->name); |
648 | return -EINVAL; | |
649 | } | |
650 | } | |
651 | ||
d9e32b21 | 652 | block_netpoll_tx(); |
d9e32b21 JP |
653 | write_lock_bh(&bond->curr_slave_lock); |
654 | ||
655 | /* check to see if we are clearing active */ | |
656 | if (!slave_dev) { | |
90194264 | 657 | pr_info("%s: Clearing current active slave\n", bond->dev->name); |
d9e32b21 JP |
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 */ | |
90194264 | 668 | pr_info("%s: %s is already the current active slave\n", |
d9e32b21 JP |
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)) { | |
90194264 | 673 | pr_info("%s: Setting %s as active slave\n", |
d9e32b21 JP |
674 | bond->dev->name, new_active->dev->name); |
675 | bond_change_active_slave(bond, new_active); | |
676 | } else { | |
90194264 | 677 | pr_err("%s: Could not set %s as active slave; either %s is down or the link is down\n", |
d9e32b21 JP |
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 | { |
90194264 | 693 | pr_info("%s: Setting MII monitoring interval to %llu\n", |
b98d9c66 NA |
694 | bond->dev->name, newval->value); |
695 | bond->params.miimon = newval->value; | |
eecdaa6e | 696 | if (bond->params.updelay) |
90194264 | 697 | pr_info("%s: Note: Updating updelay (to %d) since it is a multiple of the miimon value\n", |
eecdaa6e | 698 | bond->dev->name, |
699 | bond->params.updelay * bond->params.miimon); | |
700 | if (bond->params.downdelay) | |
90194264 | 701 | pr_info("%s: Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n", |
eecdaa6e | 702 | bond->dev->name, |
703 | bond->params.downdelay * bond->params.miimon); | |
b98d9c66 | 704 | if (newval->value && bond->params.arp_interval) { |
90194264 | 705 | pr_info("%s: MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n", |
eecdaa6e | 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 | { |
0681a282 NA |
730 | int value = newval->value; |
731 | ||
e4994612 | 732 | if (!bond->params.miimon) { |
25852e29 | 733 | pr_err("%s: Unable to set up delay as MII monitoring is disabled\n", |
734 | bond->dev->name); | |
735 | return -EPERM; | |
736 | } | |
0681a282 NA |
737 | if ((value % bond->params.miimon) != 0) { |
738 | pr_warn("%s: Warning: up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", | |
739 | bond->dev->name, value, | |
e4994612 | 740 | bond->params.miimon, |
0681a282 | 741 | (value / bond->params.miimon) * |
e4994612 | 742 | bond->params.miimon); |
25852e29 | 743 | } |
0681a282 | 744 | bond->params.updelay = value / bond->params.miimon; |
90194264 JP |
745 | pr_info("%s: Setting up delay to %d\n", |
746 | bond->dev->name, bond->params.updelay * bond->params.miimon); | |
25852e29 | 747 | |
748 | return 0; | |
749 | } | |
c7461f9b | 750 | |
25a9b54a NA |
751 | int bond_option_downdelay_set(struct bonding *bond, |
752 | struct bond_opt_value *newval) | |
c7461f9b | 753 | { |
0681a282 NA |
754 | int value = newval->value; |
755 | ||
25a9b54a | 756 | if (!bond->params.miimon) { |
c7461f9b | 757 | pr_err("%s: Unable to set down delay as MII monitoring is disabled\n", |
758 | bond->dev->name); | |
759 | return -EPERM; | |
760 | } | |
0681a282 NA |
761 | if ((value % bond->params.miimon) != 0) { |
762 | pr_warn("%s: Warning: down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n", | |
763 | bond->dev->name, value, | |
25a9b54a | 764 | bond->params.miimon, |
0681a282 | 765 | (value / bond->params.miimon) * |
25a9b54a | 766 | bond->params.miimon); |
c7461f9b | 767 | } |
0681a282 | 768 | bond->params.downdelay = value / bond->params.miimon; |
90194264 JP |
769 | pr_info("%s: Setting down delay to %d\n", |
770 | bond->dev->name, bond->params.downdelay * bond->params.miimon); | |
c7461f9b | 771 | |
772 | return 0; | |
773 | } | |
9f53e14e | 774 | |
0fff0608 NA |
775 | int bond_option_use_carrier_set(struct bonding *bond, |
776 | struct bond_opt_value *newval) | |
9f53e14e | 777 | { |
90194264 | 778 | pr_info("%s: Setting use_carrier to %llu\n", |
0fff0608 NA |
779 | bond->dev->name, newval->value); |
780 | bond->params.use_carrier = newval->value; | |
9f53e14e | 781 | |
782 | return 0; | |
783 | } | |
06151dbc | 784 | |
7bdb04ed NA |
785 | int bond_option_arp_interval_set(struct bonding *bond, |
786 | struct bond_opt_value *newval) | |
06151dbc | 787 | { |
90194264 | 788 | pr_info("%s: Setting ARP monitoring interval to %llu\n", |
7bdb04ed NA |
789 | bond->dev->name, newval->value); |
790 | bond->params.arp_interval = newval->value; | |
791 | if (newval->value) { | |
06151dbc | 792 | if (bond->params.miimon) { |
90194264 | 793 | pr_info("%s: ARP monitoring cannot be used with MII monitoring. %s Disabling MII monitoring\n", |
06151dbc | 794 | bond->dev->name, bond->dev->name); |
795 | bond->params.miimon = 0; | |
796 | } | |
797 | if (!bond->params.arp_targets[0]) | |
90194264 | 798 | pr_info("%s: ARP monitoring has been set up, but no ARP targets have been specified\n", |
06151dbc | 799 | bond->dev->name); |
800 | } | |
801 | if (bond->dev->flags & IFF_UP) { | |
802 | /* If the interface is up, we may need to fire off | |
803 | * the ARP timer. If the interface is down, the | |
804 | * timer will get fired off when the open function | |
805 | * is called. | |
806 | */ | |
7bdb04ed | 807 | if (!newval->value) { |
06151dbc | 808 | if (bond->params.arp_validate) |
809 | bond->recv_probe = NULL; | |
810 | cancel_delayed_work_sync(&bond->arp_work); | |
811 | } else { | |
812 | /* arp_validate can be set only in active-backup mode */ | |
3fe68df9 | 813 | bond->recv_probe = bond_arp_rcv; |
06151dbc | 814 | cancel_delayed_work_sync(&bond->mii_work); |
815 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
816 | } | |
817 | } | |
818 | ||
819 | return 0; | |
820 | } | |
7f28fa10 | 821 | |
822 | static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot, | |
823 | __be32 target, | |
824 | unsigned long last_rx) | |
825 | { | |
826 | __be32 *targets = bond->params.arp_targets; | |
827 | struct list_head *iter; | |
828 | struct slave *slave; | |
829 | ||
830 | if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) { | |
831 | bond_for_each_slave(bond, slave, iter) | |
832 | slave->target_last_arp_rx[slot] = last_rx; | |
833 | targets[slot] = target; | |
834 | } | |
835 | } | |
836 | ||
837 | static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) | |
838 | { | |
839 | __be32 *targets = bond->params.arp_targets; | |
840 | int ind; | |
841 | ||
842 | if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) { | |
843 | pr_err("%s: invalid ARP target %pI4 specified for addition\n", | |
844 | bond->dev->name, &target); | |
845 | return -EINVAL; | |
846 | } | |
847 | ||
848 | if (bond_get_targets_ip(targets, target) != -1) { /* dup */ | |
849 | pr_err("%s: ARP target %pI4 is already present\n", | |
850 | bond->dev->name, &target); | |
851 | return -EINVAL; | |
852 | } | |
853 | ||
854 | ind = bond_get_targets_ip(targets, 0); /* first free slot */ | |
855 | if (ind == -1) { | |
90194264 | 856 | pr_err("%s: ARP target table is full!\n", bond->dev->name); |
7f28fa10 | 857 | return -EINVAL; |
858 | } | |
859 | ||
90194264 | 860 | pr_info("%s: Adding ARP target %pI4\n", bond->dev->name, &target); |
7f28fa10 | 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) { | |
90194264 | 895 | pr_err("%s: unable to remove nonexistent ARP target %pI4\n", |
7f28fa10 | 896 | bond->dev->name, &target); |
897 | return -EINVAL; | |
898 | } | |
899 | ||
900 | if (ind == 0 && !targets[1] && bond->params.arp_interval) | |
90194264 | 901 | pr_warn("%s: Removing last arp target with arp_interval on\n", |
7f28fa10 | 902 | bond->dev->name); |
903 | ||
90194264 | 904 | pr_info("%s: Removing ARP target %pI4\n", bond->dev->name, &target); |
7f28fa10 | 905 | |
906 | /* not to race with bond_arp_rcv */ | |
907 | write_lock_bh(&bond->lock); | |
908 | ||
909 | bond_for_each_slave(bond, slave, iter) { | |
910 | targets_rx = slave->target_last_arp_rx; | |
911 | for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) | |
912 | targets_rx[i] = targets_rx[i+1]; | |
913 | targets_rx[i] = 0; | |
914 | } | |
915 | for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) | |
916 | targets[i] = targets[i+1]; | |
917 | targets[i] = 0; | |
918 | ||
919 | write_unlock_bh(&bond->lock); | |
920 | ||
921 | return 0; | |
922 | } | |
923 | ||
4fb0ef58 | 924 | void bond_option_arp_ip_targets_clear(struct bonding *bond) |
7f28fa10 | 925 | { |
4fb0ef58 | 926 | int i; |
7f28fa10 | 927 | |
928 | /* not to race with bond_arp_rcv */ | |
929 | write_lock_bh(&bond->lock); | |
7f28fa10 | 930 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) |
931 | _bond_options_arp_ip_target_set(bond, i, 0, 0); | |
4fb0ef58 NA |
932 | write_unlock_bh(&bond->lock); |
933 | } | |
7f28fa10 | 934 | |
4fb0ef58 NA |
935 | int bond_option_arp_ip_targets_set(struct bonding *bond, |
936 | struct bond_opt_value *newval) | |
937 | { | |
938 | int ret = -EPERM; | |
939 | __be32 target; | |
940 | ||
941 | if (newval->string) { | |
942 | if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) { | |
943 | pr_err("%s: invalid ARP target %pI4 specified\n", | |
944 | bond->dev->name, &target); | |
945 | return ret; | |
946 | } | |
947 | if (newval->string[0] == '+') | |
948 | ret = bond_option_arp_ip_target_add(bond, target); | |
949 | else if (newval->string[0] == '-') | |
950 | ret = bond_option_arp_ip_target_rem(bond, target); | |
951 | else | |
90194264 | 952 | pr_err("no command found in arp_ip_targets file for bond %s - use +<addr> or -<addr>\n", |
4fb0ef58 NA |
953 | bond->dev->name); |
954 | } else { | |
955 | target = newval->value; | |
956 | ret = bond_option_arp_ip_target_add(bond, target); | |
7f28fa10 | 957 | } |
958 | ||
7f28fa10 | 959 | return ret; |
960 | } | |
29c49482 | 961 | |
16228881 NA |
962 | int bond_option_arp_validate_set(struct bonding *bond, |
963 | struct bond_opt_value *newval) | |
29c49482 | 964 | { |
90194264 | 965 | pr_info("%s: Setting arp_validate to %s (%llu)\n", |
16228881 | 966 | bond->dev->name, newval->string, newval->value); |
29c49482 | 967 | |
968 | if (bond->dev->flags & IFF_UP) { | |
16228881 | 969 | if (!newval->value) |
29c49482 | 970 | bond->recv_probe = NULL; |
971 | else if (bond->params.arp_interval) | |
972 | bond->recv_probe = bond_arp_rcv; | |
973 | } | |
16228881 | 974 | bond->params.arp_validate = newval->value; |
29c49482 | 975 | |
976 | return 0; | |
977 | } | |
d5c84254 | 978 | |
edf36b24 NA |
979 | int bond_option_arp_all_targets_set(struct bonding *bond, |
980 | struct bond_opt_value *newval) | |
d5c84254 | 981 | { |
90194264 | 982 | pr_info("%s: Setting arp_all_targets to %s (%llu)\n", |
edf36b24 NA |
983 | bond->dev->name, newval->string, newval->value); |
984 | bond->params.arp_all_targets = newval->value; | |
d5c84254 | 985 | |
986 | return 0; | |
987 | } | |
0a98a0d1 | 988 | |
180222f0 | 989 | int bond_option_primary_set(struct bonding *bond, struct bond_opt_value *newval) |
0a98a0d1 | 990 | { |
180222f0 | 991 | char *p, *primary = newval->string; |
0a98a0d1 | 992 | struct list_head *iter; |
993 | struct slave *slave; | |
0a98a0d1 | 994 | |
995 | block_netpoll_tx(); | |
996 | read_lock(&bond->lock); | |
997 | write_lock_bh(&bond->curr_slave_lock); | |
998 | ||
180222f0 NA |
999 | p = strchr(primary, '\n'); |
1000 | if (p) | |
1001 | *p = '\0'; | |
0a98a0d1 | 1002 | /* check to see if we are clearing primary */ |
1003 | if (!strlen(primary)) { | |
90194264 | 1004 | pr_info("%s: Setting primary slave to None\n", bond->dev->name); |
0a98a0d1 | 1005 | bond->primary_slave = NULL; |
1006 | memset(bond->params.primary, 0, sizeof(bond->params.primary)); | |
1007 | bond_select_active_slave(bond); | |
1008 | goto out; | |
1009 | } | |
1010 | ||
1011 | bond_for_each_slave(bond, slave, iter) { | |
1012 | if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) { | |
90194264 | 1013 | pr_info("%s: Setting %s as primary slave\n", |
0a98a0d1 | 1014 | bond->dev->name, slave->dev->name); |
1015 | bond->primary_slave = slave; | |
1016 | strcpy(bond->params.primary, slave->dev->name); | |
1017 | bond_select_active_slave(bond); | |
1018 | goto out; | |
1019 | } | |
1020 | } | |
1021 | ||
c59ab673 | 1022 | if (bond->primary_slave) { |
90194264 | 1023 | pr_info("%s: Setting primary slave to None\n", bond->dev->name); |
c59ab673 | 1024 | bond->primary_slave = NULL; |
1025 | bond_select_active_slave(bond); | |
1026 | } | |
0a98a0d1 | 1027 | strncpy(bond->params.primary, primary, IFNAMSIZ); |
1028 | bond->params.primary[IFNAMSIZ - 1] = 0; | |
1029 | ||
90194264 | 1030 | pr_info("%s: Recording %s as primary, but it has not been enslaved to %s yet\n", |
0a98a0d1 | 1031 | bond->dev->name, primary, bond->dev->name); |
1032 | ||
1033 | out: | |
1034 | write_unlock_bh(&bond->curr_slave_lock); | |
1035 | read_unlock(&bond->lock); | |
1036 | unblock_netpoll_tx(); | |
1037 | ||
180222f0 | 1038 | return 0; |
0a98a0d1 | 1039 | } |
8a41ae44 | 1040 | |
388d3a6d NA |
1041 | int bond_option_primary_reselect_set(struct bonding *bond, |
1042 | struct bond_opt_value *newval) | |
8a41ae44 | 1043 | { |
90194264 | 1044 | pr_info("%s: Setting primary_reselect to %s (%llu)\n", |
388d3a6d NA |
1045 | bond->dev->name, newval->string, newval->value); |
1046 | bond->params.primary_reselect = newval->value; | |
8a41ae44 | 1047 | |
1048 | block_netpoll_tx(); | |
1049 | write_lock_bh(&bond->curr_slave_lock); | |
1050 | bond_select_active_slave(bond); | |
1051 | write_unlock_bh(&bond->curr_slave_lock); | |
1052 | unblock_netpoll_tx(); | |
1053 | ||
1054 | return 0; | |
1055 | } | |
89901972 | 1056 | |
1df6b6aa NA |
1057 | int bond_option_fail_over_mac_set(struct bonding *bond, |
1058 | struct bond_opt_value *newval) | |
89901972 | 1059 | { |
90194264 | 1060 | pr_info("%s: Setting fail_over_mac to %s (%llu)\n", |
1df6b6aa NA |
1061 | bond->dev->name, newval->string, newval->value); |
1062 | bond->params.fail_over_mac = newval->value; | |
89901972 | 1063 | |
1064 | return 0; | |
1065 | } | |
f70161c6 | 1066 | |
a4b32ce7 NA |
1067 | int bond_option_xmit_hash_policy_set(struct bonding *bond, |
1068 | struct bond_opt_value *newval) | |
f70161c6 | 1069 | { |
90194264 | 1070 | pr_info("%s: Setting xmit hash policy to %s (%llu)\n", |
a4b32ce7 NA |
1071 | bond->dev->name, newval->string, newval->value); |
1072 | bond->params.xmit_policy = newval->value; | |
f70161c6 | 1073 | |
1074 | return 0; | |
1075 | } | |
d8838de7 | 1076 | |
105c8fb6 NA |
1077 | int bond_option_resend_igmp_set(struct bonding *bond, |
1078 | struct bond_opt_value *newval) | |
d8838de7 | 1079 | { |
90194264 | 1080 | pr_info("%s: Setting resend_igmp to %llu\n", |
105c8fb6 NA |
1081 | bond->dev->name, newval->value); |
1082 | bond->params.resend_igmp = newval->value; | |
d8838de7 | 1083 | |
1084 | return 0; | |
1085 | } | |
2c9839c1 | 1086 | |
ef56becb NA |
1087 | int bond_option_num_peer_notif_set(struct bonding *bond, |
1088 | struct bond_opt_value *newval) | |
2c9839c1 | 1089 | { |
ef56becb NA |
1090 | bond->params.num_peer_notif = newval->value; |
1091 | ||
2c9839c1 | 1092 | return 0; |
1093 | } | |
1cc0b1e3 | 1094 | |
1095 | int bond_option_all_slaves_active_set(struct bonding *bond, | |
3df01162 | 1096 | struct bond_opt_value *newval) |
1cc0b1e3 | 1097 | { |
1098 | struct list_head *iter; | |
1099 | struct slave *slave; | |
1100 | ||
3df01162 | 1101 | if (newval->value == bond->params.all_slaves_active) |
1cc0b1e3 | 1102 | return 0; |
3df01162 | 1103 | bond->params.all_slaves_active = newval->value; |
1cc0b1e3 | 1104 | bond_for_each_slave(bond, slave, iter) { |
1105 | if (!bond_is_active_slave(slave)) { | |
3df01162 | 1106 | if (newval->value) |
1cc0b1e3 | 1107 | slave->inactive = 0; |
1108 | else | |
1109 | slave->inactive = 1; | |
1110 | } | |
1111 | } | |
1112 | ||
1113 | return 0; | |
1114 | } | |
7d101008 | 1115 | |
633ddc9e NA |
1116 | int bond_option_min_links_set(struct bonding *bond, |
1117 | struct bond_opt_value *newval) | |
7d101008 | 1118 | { |
633ddc9e NA |
1119 | pr_info("%s: Setting min links value to %llu\n", |
1120 | bond->dev->name, newval->value); | |
1121 | bond->params.min_links = newval->value; | |
7d101008 | 1122 | |
1123 | return 0; | |
1124 | } | |
8d836d09 | 1125 | |
4325b374 NA |
1126 | int bond_option_lp_interval_set(struct bonding *bond, |
1127 | struct bond_opt_value *newval) | |
8d836d09 | 1128 | { |
4325b374 | 1129 | bond->params.lp_interval = newval->value; |
8d836d09 | 1130 | |
1131 | return 0; | |
1132 | } | |
c13ab3ff | 1133 | |
aa59d851 | 1134 | int bond_option_pps_set(struct bonding *bond, struct bond_opt_value *newval) |
c13ab3ff | 1135 | { |
aa59d851 NA |
1136 | bond->params.packets_per_slave = newval->value; |
1137 | if (newval->value > 0) { | |
809fa972 | 1138 | bond->params.reciprocal_packets_per_slave = |
aa59d851 | 1139 | reciprocal_value(newval->value); |
809fa972 HFS |
1140 | } else { |
1141 | /* reciprocal_packets_per_slave is unused if | |
1142 | * packets_per_slave is 0 or 1, just initialize it | |
1143 | */ | |
1144 | bond->params.reciprocal_packets_per_slave = | |
1145 | (struct reciprocal_value) { 0 }; | |
1146 | } | |
c13ab3ff | 1147 | |
1148 | return 0; | |
1149 | } | |
998e40bb | 1150 | |
d3131de7 NA |
1151 | int bond_option_lacp_rate_set(struct bonding *bond, |
1152 | struct bond_opt_value *newval) | |
998e40bb | 1153 | { |
90194264 | 1154 | pr_info("%s: Setting LACP rate to %s (%llu)\n", |
d3131de7 NA |
1155 | bond->dev->name, newval->string, newval->value); |
1156 | bond->params.lacp_fast = newval->value; | |
3243c47b | 1157 | bond_3ad_update_lacp_rate(bond); |
998e40bb | 1158 | |
1159 | return 0; | |
1160 | } | |
ec029fac | 1161 | |
9e5f5eeb NA |
1162 | int bond_option_ad_select_set(struct bonding *bond, |
1163 | struct bond_opt_value *newval) | |
ec029fac | 1164 | { |
90194264 | 1165 | pr_info("%s: Setting ad_select to %s (%llu)\n", |
9e5f5eeb NA |
1166 | bond->dev->name, newval->string, newval->value); |
1167 | bond->params.ad_select = newval->value; | |
ec029fac | 1168 | |
1169 | return 0; | |
1170 | } | |
24089ba1 NA |
1171 | |
1172 | int bond_option_queue_id_set(struct bonding *bond, | |
1173 | struct bond_opt_value *newval) | |
1174 | { | |
1175 | struct slave *slave, *update_slave; | |
1176 | struct net_device *sdev; | |
1177 | struct list_head *iter; | |
1178 | char *delim; | |
1179 | int ret = 0; | |
1180 | u16 qid; | |
1181 | ||
1182 | /* delim will point to queue id if successful */ | |
1183 | delim = strchr(newval->string, ':'); | |
1184 | if (!delim) | |
1185 | goto err_no_cmd; | |
1186 | ||
1187 | /* Terminate string that points to device name and bump it | |
1188 | * up one, so we can read the queue id there. | |
1189 | */ | |
1190 | *delim = '\0'; | |
1191 | if (sscanf(++delim, "%hd\n", &qid) != 1) | |
1192 | goto err_no_cmd; | |
1193 | ||
1194 | /* Check buffer length, valid ifname and queue id */ | |
c313c89e | 1195 | if (!dev_valid_name(newval->string) || |
24089ba1 NA |
1196 | qid > bond->dev->real_num_tx_queues) |
1197 | goto err_no_cmd; | |
1198 | ||
1199 | /* Get the pointer to that interface if it exists */ | |
1200 | sdev = __dev_get_by_name(dev_net(bond->dev), newval->string); | |
1201 | if (!sdev) | |
1202 | goto err_no_cmd; | |
1203 | ||
1204 | /* Search for thes slave and check for duplicate qids */ | |
1205 | update_slave = NULL; | |
1206 | bond_for_each_slave(bond, slave, iter) { | |
1207 | if (sdev == slave->dev) | |
1208 | /* We don't need to check the matching | |
1209 | * slave for dups, since we're overwriting it | |
1210 | */ | |
1211 | update_slave = slave; | |
1212 | else if (qid && qid == slave->queue_id) { | |
1213 | goto err_no_cmd; | |
1214 | } | |
1215 | } | |
1216 | ||
1217 | if (!update_slave) | |
1218 | goto err_no_cmd; | |
1219 | ||
1220 | /* Actually set the qids for the slave */ | |
1221 | update_slave->queue_id = qid; | |
1222 | ||
1223 | out: | |
1224 | return ret; | |
1225 | ||
1226 | err_no_cmd: | |
90194264 | 1227 | pr_info("invalid input for queue_id set for %s\n", bond->dev->name); |
24089ba1 NA |
1228 | ret = -EPERM; |
1229 | goto out; | |
1230 | ||
1231 | } | |
0e2e5b66 NA |
1232 | |
1233 | int bond_option_slaves_set(struct bonding *bond, struct bond_opt_value *newval) | |
1234 | { | |
1235 | char command[IFNAMSIZ + 1] = { 0, }; | |
1236 | struct net_device *dev; | |
1237 | char *ifname; | |
1238 | int ret; | |
1239 | ||
1240 | sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/ | |
1241 | ifname = command + 1; | |
1242 | if ((strlen(command) <= 1) || | |
1243 | !dev_valid_name(ifname)) | |
1244 | goto err_no_cmd; | |
1245 | ||
1246 | dev = __dev_get_by_name(dev_net(bond->dev), ifname); | |
1247 | if (!dev) { | |
90194264 | 1248 | pr_info("%s: interface %s does not exist!\n", |
0e2e5b66 NA |
1249 | bond->dev->name, ifname); |
1250 | ret = -ENODEV; | |
1251 | goto out; | |
1252 | } | |
1253 | ||
1254 | switch (command[0]) { | |
1255 | case '+': | |
90194264 | 1256 | pr_info("%s: Adding slave %s\n", bond->dev->name, dev->name); |
0e2e5b66 NA |
1257 | ret = bond_enslave(bond->dev, dev); |
1258 | break; | |
1259 | ||
1260 | case '-': | |
90194264 | 1261 | pr_info("%s: Removing slave %s\n", bond->dev->name, dev->name); |
0e2e5b66 NA |
1262 | ret = bond_release(bond->dev, dev); |
1263 | break; | |
1264 | ||
1265 | default: | |
1266 | goto err_no_cmd; | |
1267 | } | |
1268 | ||
1269 | out: | |
1270 | return ret; | |
1271 | ||
1272 | err_no_cmd: | |
90194264 | 1273 | pr_err("no command found in slaves file for bond %s - use +ifname or -ifname\n", |
0e2e5b66 NA |
1274 | bond->dev->name); |
1275 | ret = -EPERM; | |
1276 | goto out; | |
1277 | } |