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 | ||
f3253339 | 23 | static int bond_option_active_slave_set(struct bonding *bond, |
28f084cc | 24 | const struct bond_opt_value *newval); |
f3253339 | 25 | static int bond_option_miimon_set(struct bonding *bond, |
28f084cc | 26 | const struct bond_opt_value *newval); |
f3253339 | 27 | static int bond_option_updelay_set(struct bonding *bond, |
28f084cc | 28 | const struct bond_opt_value *newval); |
f3253339 | 29 | static int bond_option_downdelay_set(struct bonding *bond, |
28f084cc | 30 | const struct bond_opt_value *newval); |
f3253339 | 31 | static int bond_option_use_carrier_set(struct bonding *bond, |
28f084cc | 32 | const struct bond_opt_value *newval); |
f3253339 | 33 | static int bond_option_arp_interval_set(struct bonding *bond, |
28f084cc | 34 | const struct bond_opt_value *newval); |
f3253339 | 35 | static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target); |
36 | static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target); | |
37 | static int bond_option_arp_ip_targets_set(struct bonding *bond, | |
28f084cc | 38 | const struct bond_opt_value *newval); |
f3253339 | 39 | static int bond_option_arp_validate_set(struct bonding *bond, |
28f084cc | 40 | const struct bond_opt_value *newval); |
f3253339 | 41 | static int bond_option_arp_all_targets_set(struct bonding *bond, |
28f084cc | 42 | const struct bond_opt_value *newval); |
f3253339 | 43 | static int bond_option_primary_set(struct bonding *bond, |
28f084cc | 44 | const struct bond_opt_value *newval); |
f3253339 | 45 | static int bond_option_primary_reselect_set(struct bonding *bond, |
28f084cc | 46 | const struct bond_opt_value *newval); |
f3253339 | 47 | static int bond_option_fail_over_mac_set(struct bonding *bond, |
28f084cc | 48 | const struct bond_opt_value *newval); |
f3253339 | 49 | static int bond_option_xmit_hash_policy_set(struct bonding *bond, |
28f084cc | 50 | const struct bond_opt_value *newval); |
f3253339 | 51 | static int bond_option_resend_igmp_set(struct bonding *bond, |
28f084cc | 52 | const struct bond_opt_value *newval); |
f3253339 | 53 | static int bond_option_num_peer_notif_set(struct bonding *bond, |
28f084cc | 54 | const struct bond_opt_value *newval); |
f3253339 | 55 | static int bond_option_all_slaves_active_set(struct bonding *bond, |
28f084cc | 56 | const struct bond_opt_value *newval); |
f3253339 | 57 | static int bond_option_min_links_set(struct bonding *bond, |
28f084cc | 58 | const struct bond_opt_value *newval); |
f3253339 | 59 | static int bond_option_lp_interval_set(struct bonding *bond, |
28f084cc | 60 | const struct bond_opt_value *newval); |
f3253339 | 61 | static int bond_option_pps_set(struct bonding *bond, |
28f084cc | 62 | const struct bond_opt_value *newval); |
f3253339 | 63 | static int bond_option_lacp_rate_set(struct bonding *bond, |
28f084cc | 64 | const struct bond_opt_value *newval); |
f3253339 | 65 | static int bond_option_ad_select_set(struct bonding *bond, |
28f084cc | 66 | const struct bond_opt_value *newval); |
f3253339 | 67 | static int bond_option_queue_id_set(struct bonding *bond, |
28f084cc | 68 | const struct bond_opt_value *newval); |
f3253339 | 69 | static int bond_option_mode_set(struct bonding *bond, |
28f084cc | 70 | const struct bond_opt_value *newval); |
f3253339 | 71 | static int bond_option_slaves_set(struct bonding *bond, |
28f084cc | 72 | const struct bond_opt_value *newval); |
e9f0fb88 MB |
73 | static int bond_option_tlb_dynamic_lb_set(struct bonding *bond, |
74 | const struct bond_opt_value *newval); | |
f3253339 | 75 | |
76 | ||
77 | static const struct bond_opt_value bond_mode_tbl[] = { | |
2b3798d5 NA |
78 | { "balance-rr", BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT}, |
79 | { "active-backup", BOND_MODE_ACTIVEBACKUP, 0}, | |
80 | { "balance-xor", BOND_MODE_XOR, 0}, | |
81 | { "broadcast", BOND_MODE_BROADCAST, 0}, | |
82 | { "802.3ad", BOND_MODE_8023AD, 0}, | |
83 | { "balance-tlb", BOND_MODE_TLB, 0}, | |
84 | { "balance-alb", BOND_MODE_ALB, 0}, | |
85 | { NULL, -1, 0}, | |
86 | }; | |
87 | ||
f3253339 | 88 | static const struct bond_opt_value bond_pps_tbl[] = { |
aa59d851 NA |
89 | { "default", 1, BOND_VALFLAG_DEFAULT}, |
90 | { "maxval", USHRT_MAX, BOND_VALFLAG_MAX}, | |
91 | { NULL, -1, 0}, | |
92 | }; | |
93 | ||
f3253339 | 94 | static const struct bond_opt_value bond_xmit_hashtype_tbl[] = { |
a4b32ce7 NA |
95 | { "layer2", BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT}, |
96 | { "layer3+4", BOND_XMIT_POLICY_LAYER34, 0}, | |
97 | { "layer2+3", BOND_XMIT_POLICY_LAYER23, 0}, | |
98 | { "encap2+3", BOND_XMIT_POLICY_ENCAP23, 0}, | |
99 | { "encap3+4", BOND_XMIT_POLICY_ENCAP34, 0}, | |
100 | { NULL, -1, 0}, | |
101 | }; | |
102 | ||
f3253339 | 103 | static const struct bond_opt_value bond_arp_validate_tbl[] = { |
896149ff VF |
104 | { "none", BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT}, |
105 | { "active", BOND_ARP_VALIDATE_ACTIVE, 0}, | |
106 | { "backup", BOND_ARP_VALIDATE_BACKUP, 0}, | |
107 | { "all", BOND_ARP_VALIDATE_ALL, 0}, | |
108 | { "filter", BOND_ARP_FILTER, 0}, | |
109 | { "filter_active", BOND_ARP_FILTER_ACTIVE, 0}, | |
110 | { "filter_backup", BOND_ARP_FILTER_BACKUP, 0}, | |
111 | { NULL, -1, 0}, | |
16228881 NA |
112 | }; |
113 | ||
f3253339 | 114 | static const struct bond_opt_value bond_arp_all_targets_tbl[] = { |
edf36b24 NA |
115 | { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT}, |
116 | { "all", BOND_ARP_TARGETS_ALL, 0}, | |
117 | { NULL, -1, 0}, | |
118 | }; | |
119 | ||
f3253339 | 120 | static const struct bond_opt_value bond_fail_over_mac_tbl[] = { |
1df6b6aa NA |
121 | { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT}, |
122 | { "active", BOND_FOM_ACTIVE, 0}, | |
123 | { "follow", BOND_FOM_FOLLOW, 0}, | |
124 | { NULL, -1, 0}, | |
125 | }; | |
126 | ||
f3253339 | 127 | static const struct bond_opt_value bond_intmax_tbl[] = { |
7bdb04ed NA |
128 | { "off", 0, BOND_VALFLAG_DEFAULT}, |
129 | { "maxval", INT_MAX, BOND_VALFLAG_MAX}, | |
81c70806 | 130 | { NULL, -1, 0} |
7bdb04ed NA |
131 | }; |
132 | ||
f3253339 | 133 | static const struct bond_opt_value bond_lacp_rate_tbl[] = { |
d3131de7 NA |
134 | { "slow", AD_LACP_SLOW, 0}, |
135 | { "fast", AD_LACP_FAST, 0}, | |
136 | { NULL, -1, 0}, | |
137 | }; | |
138 | ||
f3253339 | 139 | static const struct bond_opt_value bond_ad_select_tbl[] = { |
9e5f5eeb NA |
140 | { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT}, |
141 | { "bandwidth", BOND_AD_BANDWIDTH, 0}, | |
142 | { "count", BOND_AD_COUNT, 0}, | |
143 | { NULL, -1, 0}, | |
144 | }; | |
145 | ||
f3253339 | 146 | static const struct bond_opt_value bond_num_peer_notif_tbl[] = { |
ef56becb NA |
147 | { "off", 0, 0}, |
148 | { "maxval", 255, BOND_VALFLAG_MAX}, | |
149 | { "default", 1, BOND_VALFLAG_DEFAULT}, | |
150 | { NULL, -1, 0} | |
151 | }; | |
152 | ||
f3253339 | 153 | static const struct bond_opt_value bond_primary_reselect_tbl[] = { |
388d3a6d NA |
154 | { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT}, |
155 | { "better", BOND_PRI_RESELECT_BETTER, 0}, | |
156 | { "failure", BOND_PRI_RESELECT_FAILURE, 0}, | |
157 | { NULL, -1}, | |
158 | }; | |
159 | ||
f3253339 | 160 | static const struct bond_opt_value bond_use_carrier_tbl[] = { |
0fff0608 NA |
161 | { "off", 0, 0}, |
162 | { "on", 1, BOND_VALFLAG_DEFAULT}, | |
163 | { NULL, -1, 0} | |
164 | }; | |
165 | ||
f3253339 | 166 | static const struct bond_opt_value bond_all_slaves_active_tbl[] = { |
3df01162 NA |
167 | { "off", 0, BOND_VALFLAG_DEFAULT}, |
168 | { "on", 1, 0}, | |
169 | { NULL, -1, 0} | |
170 | }; | |
171 | ||
f3253339 | 172 | static const struct bond_opt_value bond_resend_igmp_tbl[] = { |
105c8fb6 NA |
173 | { "off", 0, 0}, |
174 | { "maxval", 255, BOND_VALFLAG_MAX}, | |
175 | { "default", 1, BOND_VALFLAG_DEFAULT}, | |
176 | { NULL, -1, 0} | |
177 | }; | |
178 | ||
f3253339 | 179 | static const struct bond_opt_value bond_lp_interval_tbl[] = { |
4325b374 NA |
180 | { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT}, |
181 | { "maxval", INT_MAX, BOND_VALFLAG_MAX}, | |
5bd4e4c1 | 182 | { NULL, -1, 0}, |
4325b374 NA |
183 | }; |
184 | ||
e9f0fb88 MB |
185 | static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = { |
186 | { "off", 0, 0}, | |
187 | { "on", 1, BOND_VALFLAG_DEFAULT}, | |
188 | { NULL, -1, 0} | |
189 | }; | |
190 | ||
f3253339 | 191 | static const struct bond_option bond_opts[] = { |
2b3798d5 NA |
192 | [BOND_OPT_MODE] = { |
193 | .id = BOND_OPT_MODE, | |
194 | .name = "mode", | |
195 | .desc = "bond device mode", | |
196 | .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN, | |
197 | .values = bond_mode_tbl, | |
198 | .set = bond_option_mode_set | |
199 | }, | |
aa59d851 NA |
200 | [BOND_OPT_PACKETS_PER_SLAVE] = { |
201 | .id = BOND_OPT_PACKETS_PER_SLAVE, | |
202 | .name = "packets_per_slave", | |
203 | .desc = "Packets to send per slave in RR mode", | |
204 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)), | |
205 | .values = bond_pps_tbl, | |
206 | .set = bond_option_pps_set | |
207 | }, | |
a4b32ce7 NA |
208 | [BOND_OPT_XMIT_HASH] = { |
209 | .id = BOND_OPT_XMIT_HASH, | |
210 | .name = "xmit_hash_policy", | |
f05b42ea | 211 | .desc = "balance-xor, 802.3ad, and tlb hashing method", |
a4b32ce7 NA |
212 | .values = bond_xmit_hashtype_tbl, |
213 | .set = bond_option_xmit_hash_policy_set | |
214 | }, | |
16228881 NA |
215 | [BOND_OPT_ARP_VALIDATE] = { |
216 | .id = BOND_OPT_ARP_VALIDATE, | |
217 | .name = "arp_validate", | |
218 | .desc = "validate src/dst of ARP probes", | |
13ac34a8 VF |
219 | .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) | |
220 | BIT(BOND_MODE_ALB), | |
16228881 NA |
221 | .values = bond_arp_validate_tbl, |
222 | .set = bond_option_arp_validate_set | |
223 | }, | |
edf36b24 NA |
224 | [BOND_OPT_ARP_ALL_TARGETS] = { |
225 | .id = BOND_OPT_ARP_ALL_TARGETS, | |
226 | .name = "arp_all_targets", | |
227 | .desc = "fail on any/all arp targets timeout", | |
228 | .values = bond_arp_all_targets_tbl, | |
229 | .set = bond_option_arp_all_targets_set | |
230 | }, | |
1df6b6aa NA |
231 | [BOND_OPT_FAIL_OVER_MAC] = { |
232 | .id = BOND_OPT_FAIL_OVER_MAC, | |
233 | .name = "fail_over_mac", | |
234 | .desc = "For active-backup, do not set all slaves to the same MAC", | |
235 | .flags = BOND_OPTFLAG_NOSLAVES, | |
236 | .values = bond_fail_over_mac_tbl, | |
237 | .set = bond_option_fail_over_mac_set | |
238 | }, | |
7bdb04ed NA |
239 | [BOND_OPT_ARP_INTERVAL] = { |
240 | .id = BOND_OPT_ARP_INTERVAL, | |
241 | .name = "arp_interval", | |
242 | .desc = "arp interval in milliseconds", | |
243 | .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) | | |
244 | BIT(BOND_MODE_ALB), | |
245 | .values = bond_intmax_tbl, | |
246 | .set = bond_option_arp_interval_set | |
247 | }, | |
4fb0ef58 NA |
248 | [BOND_OPT_ARP_TARGETS] = { |
249 | .id = BOND_OPT_ARP_TARGETS, | |
250 | .name = "arp_ip_target", | |
251 | .desc = "arp targets in n.n.n.n form", | |
252 | .flags = BOND_OPTFLAG_RAWVAL, | |
253 | .set = bond_option_arp_ip_targets_set | |
254 | }, | |
25a9b54a NA |
255 | [BOND_OPT_DOWNDELAY] = { |
256 | .id = BOND_OPT_DOWNDELAY, | |
257 | .name = "downdelay", | |
258 | .desc = "Delay before considering link down, in milliseconds", | |
259 | .values = bond_intmax_tbl, | |
260 | .set = bond_option_downdelay_set | |
261 | }, | |
e4994612 NA |
262 | [BOND_OPT_UPDELAY] = { |
263 | .id = BOND_OPT_UPDELAY, | |
264 | .name = "updelay", | |
265 | .desc = "Delay before considering link up, in milliseconds", | |
266 | .values = bond_intmax_tbl, | |
267 | .set = bond_option_updelay_set | |
268 | }, | |
d3131de7 NA |
269 | [BOND_OPT_LACP_RATE] = { |
270 | .id = BOND_OPT_LACP_RATE, | |
271 | .name = "lacp_rate", | |
272 | .desc = "LACPDU tx rate to request from 802.3ad partner", | |
273 | .flags = BOND_OPTFLAG_IFDOWN, | |
274 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)), | |
275 | .values = bond_lacp_rate_tbl, | |
276 | .set = bond_option_lacp_rate_set | |
277 | }, | |
633ddc9e NA |
278 | [BOND_OPT_MINLINKS] = { |
279 | .id = BOND_OPT_MINLINKS, | |
280 | .name = "min_links", | |
281 | .desc = "Minimum number of available links before turning on carrier", | |
282 | .values = bond_intmax_tbl, | |
283 | .set = bond_option_min_links_set | |
284 | }, | |
9e5f5eeb NA |
285 | [BOND_OPT_AD_SELECT] = { |
286 | .id = BOND_OPT_AD_SELECT, | |
287 | .name = "ad_select", | |
288 | .desc = "803.ad aggregation selection logic", | |
289 | .flags = BOND_OPTFLAG_IFDOWN, | |
290 | .values = bond_ad_select_tbl, | |
291 | .set = bond_option_ad_select_set | |
292 | }, | |
ef56becb NA |
293 | [BOND_OPT_NUM_PEER_NOTIF] = { |
294 | .id = BOND_OPT_NUM_PEER_NOTIF, | |
295 | .name = "num_unsol_na", | |
296 | .desc = "Number of peer notifications to send on failover event", | |
297 | .values = bond_num_peer_notif_tbl, | |
298 | .set = bond_option_num_peer_notif_set | |
299 | }, | |
b98d9c66 NA |
300 | [BOND_OPT_MIIMON] = { |
301 | .id = BOND_OPT_MIIMON, | |
302 | .name = "miimon", | |
303 | .desc = "Link check interval in milliseconds", | |
304 | .values = bond_intmax_tbl, | |
305 | .set = bond_option_miimon_set | |
306 | }, | |
180222f0 NA |
307 | [BOND_OPT_PRIMARY] = { |
308 | .id = BOND_OPT_PRIMARY, | |
309 | .name = "primary", | |
310 | .desc = "Primary network device to use", | |
311 | .flags = BOND_OPTFLAG_RAWVAL, | |
312 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) | | |
313 | BIT(BOND_MODE_TLB) | | |
314 | BIT(BOND_MODE_ALB)), | |
315 | .set = bond_option_primary_set | |
316 | }, | |
388d3a6d NA |
317 | [BOND_OPT_PRIMARY_RESELECT] = { |
318 | .id = BOND_OPT_PRIMARY_RESELECT, | |
319 | .name = "primary_reselect", | |
320 | .desc = "Reselect primary slave once it comes up", | |
321 | .values = bond_primary_reselect_tbl, | |
322 | .set = bond_option_primary_reselect_set | |
323 | }, | |
0fff0608 NA |
324 | [BOND_OPT_USE_CARRIER] = { |
325 | .id = BOND_OPT_USE_CARRIER, | |
326 | .name = "use_carrier", | |
327 | .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon", | |
328 | .values = bond_use_carrier_tbl, | |
329 | .set = bond_option_use_carrier_set | |
330 | }, | |
d1fbd3ed NA |
331 | [BOND_OPT_ACTIVE_SLAVE] = { |
332 | .id = BOND_OPT_ACTIVE_SLAVE, | |
333 | .name = "active_slave", | |
334 | .desc = "Currently active slave", | |
335 | .flags = BOND_OPTFLAG_RAWVAL, | |
336 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) | | |
337 | BIT(BOND_MODE_TLB) | | |
338 | BIT(BOND_MODE_ALB)), | |
339 | .set = bond_option_active_slave_set | |
340 | }, | |
24089ba1 NA |
341 | [BOND_OPT_QUEUE_ID] = { |
342 | .id = BOND_OPT_QUEUE_ID, | |
343 | .name = "queue_id", | |
344 | .desc = "Set queue id of a slave", | |
345 | .flags = BOND_OPTFLAG_RAWVAL, | |
346 | .set = bond_option_queue_id_set | |
347 | }, | |
3df01162 NA |
348 | [BOND_OPT_ALL_SLAVES_ACTIVE] = { |
349 | .id = BOND_OPT_ALL_SLAVES_ACTIVE, | |
350 | .name = "all_slaves_active", | |
351 | .desc = "Keep all frames received on an interface by setting active flag for all slaves", | |
352 | .values = bond_all_slaves_active_tbl, | |
353 | .set = bond_option_all_slaves_active_set | |
354 | }, | |
105c8fb6 NA |
355 | [BOND_OPT_RESEND_IGMP] = { |
356 | .id = BOND_OPT_RESEND_IGMP, | |
357 | .name = "resend_igmp", | |
358 | .desc = "Number of IGMP membership reports to send on link failure", | |
359 | .values = bond_resend_igmp_tbl, | |
360 | .set = bond_option_resend_igmp_set | |
361 | }, | |
4325b374 NA |
362 | [BOND_OPT_LP_INTERVAL] = { |
363 | .id = BOND_OPT_LP_INTERVAL, | |
364 | .name = "lp_interval", | |
365 | .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch", | |
366 | .values = bond_lp_interval_tbl, | |
367 | .set = bond_option_lp_interval_set | |
368 | }, | |
0e2e5b66 NA |
369 | [BOND_OPT_SLAVES] = { |
370 | .id = BOND_OPT_SLAVES, | |
371 | .name = "slaves", | |
372 | .desc = "Slave membership management", | |
373 | .flags = BOND_OPTFLAG_RAWVAL, | |
374 | .set = bond_option_slaves_set | |
375 | }, | |
e9f0fb88 MB |
376 | [BOND_OPT_TLB_DYNAMIC_LB] = { |
377 | .id = BOND_OPT_TLB_DYNAMIC_LB, | |
dc3e5d18 | 378 | .name = "tlb_dynamic_lb", |
e9f0fb88 MB |
379 | .desc = "Enable dynamic flow shuffling", |
380 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_TLB)), | |
381 | .values = bond_tlb_dynamic_lb_tbl, | |
382 | .flags = BOND_OPTFLAG_IFDOWN, | |
383 | .set = bond_option_tlb_dynamic_lb_set, | |
384 | }, | |
09117362 NA |
385 | { } |
386 | }; | |
387 | ||
dc3e5d18 NA |
388 | /* Searches for an option by name */ |
389 | const struct bond_option *bond_opt_get_by_name(const char *name) | |
390 | { | |
391 | const struct bond_option *opt; | |
392 | int option; | |
393 | ||
394 | for (option = 0; option < BOND_OPT_LAST; option++) { | |
395 | opt = bond_opt_get(option); | |
396 | if (opt && !strcmp(opt->name, name)) | |
397 | return opt; | |
398 | } | |
399 | ||
400 | return NULL; | |
401 | } | |
402 | ||
09117362 | 403 | /* Searches for a value in opt's values[] table */ |
f3253339 | 404 | const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val) |
09117362 | 405 | { |
f3253339 | 406 | const struct bond_option *opt; |
09117362 NA |
407 | int i; |
408 | ||
409 | opt = bond_opt_get(option); | |
410 | if (WARN_ON(!opt)) | |
411 | return NULL; | |
412 | for (i = 0; opt->values && opt->values[i].string; i++) | |
413 | if (opt->values[i].value == val) | |
414 | return &opt->values[i]; | |
415 | ||
416 | return NULL; | |
417 | } | |
418 | ||
419 | /* Searches for a value in opt's values[] table which matches the flagmask */ | |
f3253339 | 420 | static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt, |
09117362 NA |
421 | u32 flagmask) |
422 | { | |
423 | int i; | |
424 | ||
425 | for (i = 0; opt->values && opt->values[i].string; i++) | |
426 | if (opt->values[i].flags & flagmask) | |
427 | return &opt->values[i]; | |
428 | ||
429 | return NULL; | |
430 | } | |
431 | ||
432 | /* If maxval is missing then there's no range to check. In case minval is | |
433 | * missing then it's considered to be 0. | |
434 | */ | |
435 | static bool bond_opt_check_range(const struct bond_option *opt, u64 val) | |
436 | { | |
f3253339 | 437 | const struct bond_opt_value *minval, *maxval; |
09117362 NA |
438 | |
439 | minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); | |
440 | maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); | |
441 | if (!maxval || (minval && val < minval->value) || val > maxval->value) | |
442 | return false; | |
443 | ||
444 | return true; | |
445 | } | |
446 | ||
447 | /** | |
448 | * bond_opt_parse - parse option value | |
449 | * @opt: the option to parse against | |
450 | * @val: value to parse | |
451 | * | |
452 | * This function tries to extract the value from @val and check if it's | |
453 | * a possible match for the option and returns NULL if a match isn't found, | |
454 | * or the struct_opt_value that matched. It also strips the new line from | |
455 | * @val->string if it's present. | |
456 | */ | |
f3253339 | 457 | const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt, |
458 | struct bond_opt_value *val) | |
09117362 NA |
459 | { |
460 | char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, }; | |
f3253339 | 461 | const struct bond_opt_value *tbl; |
462 | const struct bond_opt_value *ret = NULL; | |
09117362 NA |
463 | bool checkval; |
464 | int i, rv; | |
465 | ||
466 | /* No parsing if the option wants a raw val */ | |
467 | if (opt->flags & BOND_OPTFLAG_RAWVAL) | |
468 | return val; | |
469 | ||
470 | tbl = opt->values; | |
471 | if (!tbl) | |
472 | goto out; | |
473 | ||
474 | /* ULLONG_MAX is used to bypass string processing */ | |
475 | checkval = val->value != ULLONG_MAX; | |
476 | if (!checkval) { | |
477 | if (!val->string) | |
478 | goto out; | |
479 | p = strchr(val->string, '\n'); | |
480 | if (p) | |
481 | *p = '\0'; | |
482 | for (p = val->string; *p; p++) | |
483 | if (!(isdigit(*p) || isspace(*p))) | |
484 | break; | |
485 | /* The following code extracts the string to match or the value | |
486 | * and sets checkval appropriately | |
487 | */ | |
488 | if (*p) { | |
489 | rv = sscanf(val->string, "%32s", valstr); | |
490 | } else { | |
491 | rv = sscanf(val->string, "%llu", &val->value); | |
492 | checkval = true; | |
493 | } | |
494 | if (!rv) | |
495 | goto out; | |
496 | } | |
497 | ||
498 | for (i = 0; tbl[i].string; i++) { | |
499 | /* Check for exact match */ | |
500 | if (checkval) { | |
501 | if (val->value == tbl[i].value) | |
502 | ret = &tbl[i]; | |
503 | } else { | |
504 | if (!strcmp(valstr, "default") && | |
505 | (tbl[i].flags & BOND_VALFLAG_DEFAULT)) | |
506 | ret = &tbl[i]; | |
507 | ||
508 | if (!strcmp(valstr, tbl[i].string)) | |
509 | ret = &tbl[i]; | |
510 | } | |
511 | /* Found an exact match */ | |
512 | if (ret) | |
513 | goto out; | |
514 | } | |
515 | /* Possible range match */ | |
516 | if (checkval && bond_opt_check_range(opt, val->value)) | |
517 | ret = val; | |
518 | out: | |
519 | return ret; | |
520 | } | |
521 | ||
522 | /* Check opt's dependencies against bond mode and currently set options */ | |
523 | static int bond_opt_check_deps(struct bonding *bond, | |
524 | const struct bond_option *opt) | |
525 | { | |
526 | struct bond_params *params = &bond->params; | |
527 | ||
528 | if (test_bit(params->mode, &opt->unsuppmodes)) | |
529 | return -EACCES; | |
530 | if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond)) | |
531 | return -ENOTEMPTY; | |
532 | if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP)) | |
533 | return -EBUSY; | |
534 | ||
535 | return 0; | |
536 | } | |
537 | ||
538 | static void bond_opt_dep_print(struct bonding *bond, | |
539 | const struct bond_option *opt) | |
540 | { | |
28f084cc | 541 | const struct bond_opt_value *modeval; |
09117362 NA |
542 | struct bond_params *params; |
543 | ||
544 | params = &bond->params; | |
2b3798d5 | 545 | modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode); |
09117362 | 546 | if (test_bit(params->mode, &opt->unsuppmodes)) |
2b3798d5 NA |
547 | pr_err("%s: option %s: mode dependency failed, not supported in mode %s(%llu)\n", |
548 | bond->dev->name, opt->name, | |
549 | modeval->string, modeval->value); | |
09117362 NA |
550 | } |
551 | ||
552 | static void bond_opt_error_interpret(struct bonding *bond, | |
553 | const struct bond_option *opt, | |
28f084cc | 554 | int error, const struct bond_opt_value *val) |
09117362 | 555 | { |
28f084cc | 556 | const struct bond_opt_value *minval, *maxval; |
09117362 NA |
557 | char *p; |
558 | ||
559 | switch (error) { | |
560 | case -EINVAL: | |
561 | if (val) { | |
562 | if (val->string) { | |
563 | /* sometimes RAWVAL opts may have new lines */ | |
564 | p = strchr(val->string, '\n'); | |
565 | if (p) | |
566 | *p = '\0'; | |
90194264 | 567 | pr_err("%s: option %s: invalid value (%s)\n", |
09117362 NA |
568 | bond->dev->name, opt->name, val->string); |
569 | } else { | |
90194264 | 570 | pr_err("%s: option %s: invalid value (%llu)\n", |
09117362 NA |
571 | bond->dev->name, opt->name, val->value); |
572 | } | |
573 | } | |
574 | minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); | |
575 | maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); | |
576 | if (!maxval) | |
577 | break; | |
90194264 | 578 | pr_err("%s: option %s: allowed values %llu - %llu\n", |
09117362 NA |
579 | bond->dev->name, opt->name, minval ? minval->value : 0, |
580 | maxval->value); | |
581 | break; | |
582 | case -EACCES: | |
583 | bond_opt_dep_print(bond, opt); | |
584 | break; | |
585 | case -ENOTEMPTY: | |
90194264 | 586 | pr_err("%s: option %s: unable to set because the bond device has slaves\n", |
09117362 NA |
587 | bond->dev->name, opt->name); |
588 | break; | |
589 | case -EBUSY: | |
90194264 | 590 | pr_err("%s: option %s: unable to set because the bond device is up\n", |
09117362 NA |
591 | bond->dev->name, opt->name); |
592 | break; | |
593 | default: | |
594 | break; | |
595 | } | |
596 | } | |
597 | ||
598 | /** | |
599 | * __bond_opt_set - set a bonding option | |
600 | * @bond: target bond device | |
601 | * @option: option to set | |
602 | * @val: value to set it to | |
603 | * | |
604 | * This function is used to change the bond's option value, it can be | |
605 | * used for both enabling/changing an option and for disabling it. RTNL lock | |
606 | * must be obtained before calling this function. | |
607 | */ | |
608 | int __bond_opt_set(struct bonding *bond, | |
609 | unsigned int option, struct bond_opt_value *val) | |
610 | { | |
28f084cc | 611 | const struct bond_opt_value *retval = NULL; |
09117362 NA |
612 | const struct bond_option *opt; |
613 | int ret = -ENOENT; | |
614 | ||
615 | ASSERT_RTNL(); | |
616 | ||
617 | opt = bond_opt_get(option); | |
618 | if (WARN_ON(!val) || WARN_ON(!opt)) | |
619 | goto out; | |
620 | ret = bond_opt_check_deps(bond, opt); | |
621 | if (ret) | |
622 | goto out; | |
623 | retval = bond_opt_parse(opt, val); | |
624 | if (!retval) { | |
625 | ret = -EINVAL; | |
626 | goto out; | |
627 | } | |
628 | ret = opt->set(bond, retval); | |
629 | out: | |
630 | if (ret) | |
631 | bond_opt_error_interpret(bond, opt, ret, val); | |
632 | ||
633 | return ret; | |
634 | } | |
635 | ||
636 | /** | |
637 | * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set | |
638 | * @bond: target bond device | |
639 | * @option: option to set | |
640 | * @buf: value to set it to | |
641 | * | |
642 | * This function tries to acquire RTNL without blocking and if successful | |
643 | * calls __bond_opt_set. It is mainly used for sysfs option manipulation. | |
644 | */ | |
645 | int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf) | |
646 | { | |
647 | struct bond_opt_value optval; | |
648 | int ret; | |
649 | ||
650 | if (!rtnl_trylock()) | |
651 | return restart_syscall(); | |
652 | bond_opt_initstr(&optval, buf); | |
653 | ret = __bond_opt_set(bond, option, &optval); | |
654 | rtnl_unlock(); | |
655 | ||
656 | return ret; | |
657 | } | |
658 | ||
659 | /** | |
660 | * bond_opt_get - get a pointer to an option | |
661 | * @option: option for which to return a pointer | |
662 | * | |
663 | * This function checks if option is valid and if so returns a pointer | |
664 | * to its entry in the bond_opts[] option array. | |
665 | */ | |
f3253339 | 666 | const struct bond_option *bond_opt_get(unsigned int option) |
09117362 NA |
667 | { |
668 | if (!BOND_OPT_VALID(option)) | |
669 | return NULL; | |
670 | ||
671 | return &bond_opts[option]; | |
672 | } | |
673 | ||
ff11d8b2 NA |
674 | static int bond_option_mode_set(struct bonding *bond, |
675 | const struct bond_opt_value *newval) | |
72be35fe | 676 | { |
267bed77 | 677 | if (!bond_mode_uses_arp(newval->value) && bond->params.arp_interval) { |
fe9d04af | 678 | pr_info("%s: %s mode is incompatible with arp monitoring, start mii monitoring\n", |
2b3798d5 | 679 | bond->dev->name, newval->string); |
fe9d04af | 680 | /* disable arp monitoring */ |
681 | bond->params.arp_interval = 0; | |
682 | /* set miimon to default value */ | |
683 | bond->params.miimon = BOND_DEFAULT_MIIMON; | |
90194264 | 684 | pr_info("%s: Setting MII monitoring interval to %d\n", |
fe9d04af | 685 | bond->dev->name, bond->params.miimon); |
72be35fe JP |
686 | } |
687 | ||
688 | /* don't cache arp_validate between modes */ | |
689 | bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; | |
2b3798d5 NA |
690 | bond->params.mode = newval->value; |
691 | ||
72be35fe JP |
692 | return 0; |
693 | } | |
d9e32b21 | 694 | |
752d48b5 JP |
695 | static struct net_device *__bond_option_active_slave_get(struct bonding *bond, |
696 | struct slave *slave) | |
697 | { | |
ec0865a9 | 698 | return bond_uses_primary(bond) && slave ? slave->dev : NULL; |
752d48b5 JP |
699 | } |
700 | ||
701 | struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) | |
702 | { | |
703 | struct slave *slave = rcu_dereference(bond->curr_active_slave); | |
704 | ||
705 | return __bond_option_active_slave_get(bond, slave); | |
706 | } | |
707 | ||
f3253339 | 708 | static int bond_option_active_slave_set(struct bonding *bond, |
28f084cc | 709 | const struct bond_opt_value *newval) |
d9e32b21 | 710 | { |
d1fbd3ed NA |
711 | char ifname[IFNAMSIZ] = { 0, }; |
712 | struct net_device *slave_dev; | |
d9e32b21 JP |
713 | int ret = 0; |
714 | ||
d1fbd3ed NA |
715 | sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */ |
716 | if (!strlen(ifname) || newval->string[0] == '\n') { | |
717 | slave_dev = NULL; | |
718 | } else { | |
719 | slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname); | |
720 | if (!slave_dev) | |
721 | return -ENODEV; | |
722 | } | |
723 | ||
d9e32b21 JP |
724 | if (slave_dev) { |
725 | if (!netif_is_bond_slave(slave_dev)) { | |
90194264 | 726 | pr_err("Device %s is not bonding slave\n", |
d9e32b21 JP |
727 | slave_dev->name); |
728 | return -EINVAL; | |
729 | } | |
730 | ||
731 | if (bond->dev != netdev_master_upper_dev_get(slave_dev)) { | |
90194264 | 732 | pr_err("%s: Device %s is not our slave\n", |
d9e32b21 JP |
733 | bond->dev->name, slave_dev->name); |
734 | return -EINVAL; | |
735 | } | |
736 | } | |
737 | ||
d9e32b21 | 738 | block_netpoll_tx(); |
d9e32b21 JP |
739 | write_lock_bh(&bond->curr_slave_lock); |
740 | ||
741 | /* check to see if we are clearing active */ | |
742 | if (!slave_dev) { | |
90194264 | 743 | pr_info("%s: Clearing current active slave\n", bond->dev->name); |
8800a244 | 744 | RCU_INIT_POINTER(bond->curr_active_slave, NULL); |
d9e32b21 JP |
745 | bond_select_active_slave(bond); |
746 | } else { | |
4740d638 | 747 | struct slave *old_active = bond_deref_active_protected(bond); |
d9e32b21 JP |
748 | struct slave *new_active = bond_slave_get_rtnl(slave_dev); |
749 | ||
750 | BUG_ON(!new_active); | |
751 | ||
752 | if (new_active == old_active) { | |
753 | /* do nothing */ | |
90194264 | 754 | pr_info("%s: %s is already the current active slave\n", |
d9e32b21 JP |
755 | bond->dev->name, new_active->dev->name); |
756 | } else { | |
757 | if (old_active && (new_active->link == BOND_LINK_UP) && | |
b6adc610 | 758 | bond_slave_is_up(new_active)) { |
90194264 | 759 | pr_info("%s: Setting %s as active slave\n", |
d9e32b21 JP |
760 | bond->dev->name, new_active->dev->name); |
761 | bond_change_active_slave(bond, new_active); | |
762 | } else { | |
90194264 | 763 | pr_err("%s: Could not set %s as active slave; either %s is down or the link is down\n", |
d9e32b21 JP |
764 | bond->dev->name, new_active->dev->name, |
765 | new_active->dev->name); | |
766 | ret = -EINVAL; | |
767 | } | |
768 | } | |
769 | } | |
770 | ||
771 | write_unlock_bh(&bond->curr_slave_lock); | |
d9e32b21 | 772 | unblock_netpoll_tx(); |
d1fbd3ed | 773 | |
d9e32b21 JP |
774 | return ret; |
775 | } | |
eecdaa6e | 776 | |
dc3e5d18 NA |
777 | /* There are two tricky bits here. First, if MII monitoring is activated, then |
778 | * we must disable ARP monitoring. Second, if the timer isn't running, we must | |
779 | * start it. | |
780 | */ | |
f3253339 | 781 | static int bond_option_miimon_set(struct bonding *bond, |
28f084cc | 782 | const struct bond_opt_value *newval) |
eecdaa6e | 783 | { |
90194264 | 784 | pr_info("%s: Setting MII monitoring interval to %llu\n", |
b98d9c66 NA |
785 | bond->dev->name, newval->value); |
786 | bond->params.miimon = newval->value; | |
eecdaa6e | 787 | if (bond->params.updelay) |
90194264 | 788 | pr_info("%s: Note: Updating updelay (to %d) since it is a multiple of the miimon value\n", |
eecdaa6e | 789 | bond->dev->name, |
790 | bond->params.updelay * bond->params.miimon); | |
791 | if (bond->params.downdelay) | |
90194264 | 792 | pr_info("%s: Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n", |
eecdaa6e | 793 | bond->dev->name, |
794 | bond->params.downdelay * bond->params.miimon); | |
b98d9c66 | 795 | if (newval->value && bond->params.arp_interval) { |
90194264 | 796 | pr_info("%s: MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n", |
eecdaa6e | 797 | bond->dev->name); |
798 | bond->params.arp_interval = 0; | |
799 | if (bond->params.arp_validate) | |
800 | bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; | |
801 | } | |
802 | if (bond->dev->flags & IFF_UP) { | |
803 | /* If the interface is up, we may need to fire off | |
804 | * the MII timer. If the interface is down, the | |
805 | * timer will get fired off when the open function | |
806 | * is called. | |
807 | */ | |
b98d9c66 | 808 | if (!newval->value) { |
eecdaa6e | 809 | cancel_delayed_work_sync(&bond->mii_work); |
810 | } else { | |
811 | cancel_delayed_work_sync(&bond->arp_work); | |
812 | queue_delayed_work(bond->wq, &bond->mii_work, 0); | |
813 | } | |
814 | } | |
b98d9c66 | 815 | |
eecdaa6e | 816 | return 0; |
817 | } | |
25852e29 | 818 | |
dc3e5d18 NA |
819 | /* Set up and down delays. These must be multiples of the |
820 | * MII monitoring value, and are stored internally as the multiplier. | |
821 | * Thus, we must translate to MS for the real world. | |
822 | */ | |
f3253339 | 823 | static int bond_option_updelay_set(struct bonding *bond, |
28f084cc | 824 | const struct bond_opt_value *newval) |
25852e29 | 825 | { |
0681a282 NA |
826 | int value = newval->value; |
827 | ||
e4994612 | 828 | if (!bond->params.miimon) { |
25852e29 | 829 | pr_err("%s: Unable to set up delay as MII monitoring is disabled\n", |
830 | bond->dev->name); | |
831 | return -EPERM; | |
832 | } | |
0681a282 NA |
833 | if ((value % bond->params.miimon) != 0) { |
834 | pr_warn("%s: Warning: up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", | |
835 | bond->dev->name, value, | |
e4994612 | 836 | bond->params.miimon, |
0681a282 | 837 | (value / bond->params.miimon) * |
e4994612 | 838 | bond->params.miimon); |
25852e29 | 839 | } |
0681a282 | 840 | bond->params.updelay = value / bond->params.miimon; |
90194264 JP |
841 | pr_info("%s: Setting up delay to %d\n", |
842 | bond->dev->name, bond->params.updelay * bond->params.miimon); | |
25852e29 | 843 | |
844 | return 0; | |
845 | } | |
c7461f9b | 846 | |
f3253339 | 847 | static int bond_option_downdelay_set(struct bonding *bond, |
28f084cc | 848 | const struct bond_opt_value *newval) |
c7461f9b | 849 | { |
0681a282 NA |
850 | int value = newval->value; |
851 | ||
25a9b54a | 852 | if (!bond->params.miimon) { |
c7461f9b | 853 | pr_err("%s: Unable to set down delay as MII monitoring is disabled\n", |
854 | bond->dev->name); | |
855 | return -EPERM; | |
856 | } | |
0681a282 NA |
857 | if ((value % bond->params.miimon) != 0) { |
858 | pr_warn("%s: Warning: down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n", | |
859 | bond->dev->name, value, | |
25a9b54a | 860 | bond->params.miimon, |
0681a282 | 861 | (value / bond->params.miimon) * |
25a9b54a | 862 | bond->params.miimon); |
c7461f9b | 863 | } |
0681a282 | 864 | bond->params.downdelay = value / bond->params.miimon; |
90194264 JP |
865 | pr_info("%s: Setting down delay to %d\n", |
866 | bond->dev->name, bond->params.downdelay * bond->params.miimon); | |
c7461f9b | 867 | |
868 | return 0; | |
869 | } | |
9f53e14e | 870 | |
f3253339 | 871 | static int bond_option_use_carrier_set(struct bonding *bond, |
28f084cc | 872 | const struct bond_opt_value *newval) |
9f53e14e | 873 | { |
90194264 | 874 | pr_info("%s: Setting use_carrier to %llu\n", |
0fff0608 NA |
875 | bond->dev->name, newval->value); |
876 | bond->params.use_carrier = newval->value; | |
9f53e14e | 877 | |
878 | return 0; | |
879 | } | |
06151dbc | 880 | |
dc3e5d18 NA |
881 | /* There are two tricky bits here. First, if ARP monitoring is activated, then |
882 | * we must disable MII monitoring. Second, if the ARP timer isn't running, | |
883 | * we must start it. | |
884 | */ | |
f3253339 | 885 | static int bond_option_arp_interval_set(struct bonding *bond, |
28f084cc | 886 | const struct bond_opt_value *newval) |
06151dbc | 887 | { |
90194264 | 888 | pr_info("%s: Setting ARP monitoring interval to %llu\n", |
7bdb04ed NA |
889 | bond->dev->name, newval->value); |
890 | bond->params.arp_interval = newval->value; | |
891 | if (newval->value) { | |
06151dbc | 892 | if (bond->params.miimon) { |
90194264 | 893 | pr_info("%s: ARP monitoring cannot be used with MII monitoring. %s Disabling MII monitoring\n", |
06151dbc | 894 | bond->dev->name, bond->dev->name); |
895 | bond->params.miimon = 0; | |
896 | } | |
897 | if (!bond->params.arp_targets[0]) | |
90194264 | 898 | pr_info("%s: ARP monitoring has been set up, but no ARP targets have been specified\n", |
06151dbc | 899 | bond->dev->name); |
900 | } | |
901 | if (bond->dev->flags & IFF_UP) { | |
902 | /* If the interface is up, we may need to fire off | |
903 | * the ARP timer. If the interface is down, the | |
904 | * timer will get fired off when the open function | |
905 | * is called. | |
906 | */ | |
7bdb04ed | 907 | if (!newval->value) { |
06151dbc | 908 | if (bond->params.arp_validate) |
909 | bond->recv_probe = NULL; | |
910 | cancel_delayed_work_sync(&bond->arp_work); | |
911 | } else { | |
912 | /* arp_validate can be set only in active-backup mode */ | |
3fe68df9 | 913 | bond->recv_probe = bond_arp_rcv; |
06151dbc | 914 | cancel_delayed_work_sync(&bond->mii_work); |
915 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
916 | } | |
917 | } | |
918 | ||
919 | return 0; | |
920 | } | |
7f28fa10 | 921 | |
922 | static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot, | |
923 | __be32 target, | |
924 | unsigned long last_rx) | |
925 | { | |
926 | __be32 *targets = bond->params.arp_targets; | |
927 | struct list_head *iter; | |
928 | struct slave *slave; | |
929 | ||
930 | if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) { | |
931 | bond_for_each_slave(bond, slave, iter) | |
932 | slave->target_last_arp_rx[slot] = last_rx; | |
933 | targets[slot] = target; | |
934 | } | |
935 | } | |
936 | ||
937 | static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) | |
938 | { | |
939 | __be32 *targets = bond->params.arp_targets; | |
940 | int ind; | |
941 | ||
2807a9fe | 942 | if (!bond_is_ip_target_ok(target)) { |
7f28fa10 | 943 | pr_err("%s: invalid ARP target %pI4 specified for addition\n", |
944 | bond->dev->name, &target); | |
945 | return -EINVAL; | |
946 | } | |
947 | ||
948 | if (bond_get_targets_ip(targets, target) != -1) { /* dup */ | |
949 | pr_err("%s: ARP target %pI4 is already present\n", | |
950 | bond->dev->name, &target); | |
951 | return -EINVAL; | |
952 | } | |
953 | ||
954 | ind = bond_get_targets_ip(targets, 0); /* first free slot */ | |
955 | if (ind == -1) { | |
90194264 | 956 | pr_err("%s: ARP target table is full!\n", bond->dev->name); |
7f28fa10 | 957 | return -EINVAL; |
958 | } | |
959 | ||
90194264 | 960 | pr_info("%s: Adding ARP target %pI4\n", bond->dev->name, &target); |
7f28fa10 | 961 | |
962 | _bond_options_arp_ip_target_set(bond, ind, target, jiffies); | |
963 | ||
964 | return 0; | |
965 | } | |
966 | ||
f3253339 | 967 | static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) |
7f28fa10 | 968 | { |
969 | int ret; | |
970 | ||
971 | /* not to race with bond_arp_rcv */ | |
972 | write_lock_bh(&bond->lock); | |
973 | ret = _bond_option_arp_ip_target_add(bond, target); | |
974 | write_unlock_bh(&bond->lock); | |
975 | ||
976 | return ret; | |
977 | } | |
978 | ||
f3253339 | 979 | static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target) |
7f28fa10 | 980 | { |
981 | __be32 *targets = bond->params.arp_targets; | |
982 | struct list_head *iter; | |
983 | struct slave *slave; | |
984 | unsigned long *targets_rx; | |
985 | int ind, i; | |
986 | ||
2807a9fe | 987 | if (!bond_is_ip_target_ok(target)) { |
7f28fa10 | 988 | pr_err("%s: invalid ARP target %pI4 specified for removal\n", |
989 | bond->dev->name, &target); | |
990 | return -EINVAL; | |
991 | } | |
992 | ||
993 | ind = bond_get_targets_ip(targets, target); | |
994 | if (ind == -1) { | |
90194264 | 995 | pr_err("%s: unable to remove nonexistent ARP target %pI4\n", |
7f28fa10 | 996 | bond->dev->name, &target); |
997 | return -EINVAL; | |
998 | } | |
999 | ||
1000 | if (ind == 0 && !targets[1] && bond->params.arp_interval) | |
90194264 | 1001 | pr_warn("%s: Removing last arp target with arp_interval on\n", |
7f28fa10 | 1002 | bond->dev->name); |
1003 | ||
90194264 | 1004 | pr_info("%s: Removing ARP target %pI4\n", bond->dev->name, &target); |
7f28fa10 | 1005 | |
1006 | /* not to race with bond_arp_rcv */ | |
1007 | write_lock_bh(&bond->lock); | |
1008 | ||
1009 | bond_for_each_slave(bond, slave, iter) { | |
1010 | targets_rx = slave->target_last_arp_rx; | |
1011 | for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) | |
1012 | targets_rx[i] = targets_rx[i+1]; | |
1013 | targets_rx[i] = 0; | |
1014 | } | |
1015 | for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) | |
1016 | targets[i] = targets[i+1]; | |
1017 | targets[i] = 0; | |
1018 | ||
1019 | write_unlock_bh(&bond->lock); | |
1020 | ||
1021 | return 0; | |
1022 | } | |
1023 | ||
4fb0ef58 | 1024 | void bond_option_arp_ip_targets_clear(struct bonding *bond) |
7f28fa10 | 1025 | { |
4fb0ef58 | 1026 | int i; |
7f28fa10 | 1027 | |
1028 | /* not to race with bond_arp_rcv */ | |
1029 | write_lock_bh(&bond->lock); | |
7f28fa10 | 1030 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) |
1031 | _bond_options_arp_ip_target_set(bond, i, 0, 0); | |
4fb0ef58 NA |
1032 | write_unlock_bh(&bond->lock); |
1033 | } | |
7f28fa10 | 1034 | |
f3253339 | 1035 | static int bond_option_arp_ip_targets_set(struct bonding *bond, |
28f084cc | 1036 | const struct bond_opt_value *newval) |
4fb0ef58 NA |
1037 | { |
1038 | int ret = -EPERM; | |
1039 | __be32 target; | |
1040 | ||
1041 | if (newval->string) { | |
1042 | if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) { | |
1043 | pr_err("%s: invalid ARP target %pI4 specified\n", | |
1044 | bond->dev->name, &target); | |
1045 | return ret; | |
1046 | } | |
1047 | if (newval->string[0] == '+') | |
1048 | ret = bond_option_arp_ip_target_add(bond, target); | |
1049 | else if (newval->string[0] == '-') | |
1050 | ret = bond_option_arp_ip_target_rem(bond, target); | |
1051 | else | |
90194264 | 1052 | pr_err("no command found in arp_ip_targets file for bond %s - use +<addr> or -<addr>\n", |
4fb0ef58 NA |
1053 | bond->dev->name); |
1054 | } else { | |
1055 | target = newval->value; | |
1056 | ret = bond_option_arp_ip_target_add(bond, target); | |
7f28fa10 | 1057 | } |
1058 | ||
7f28fa10 | 1059 | return ret; |
1060 | } | |
29c49482 | 1061 | |
f3253339 | 1062 | static int bond_option_arp_validate_set(struct bonding *bond, |
28f084cc | 1063 | const struct bond_opt_value *newval) |
29c49482 | 1064 | { |
90194264 | 1065 | pr_info("%s: Setting arp_validate to %s (%llu)\n", |
16228881 | 1066 | bond->dev->name, newval->string, newval->value); |
29c49482 | 1067 | |
1068 | if (bond->dev->flags & IFF_UP) { | |
16228881 | 1069 | if (!newval->value) |
29c49482 | 1070 | bond->recv_probe = NULL; |
1071 | else if (bond->params.arp_interval) | |
1072 | bond->recv_probe = bond_arp_rcv; | |
1073 | } | |
16228881 | 1074 | bond->params.arp_validate = newval->value; |
29c49482 | 1075 | |
1076 | return 0; | |
1077 | } | |
d5c84254 | 1078 | |
f3253339 | 1079 | static int bond_option_arp_all_targets_set(struct bonding *bond, |
28f084cc | 1080 | const struct bond_opt_value *newval) |
d5c84254 | 1081 | { |
90194264 | 1082 | pr_info("%s: Setting arp_all_targets to %s (%llu)\n", |
edf36b24 NA |
1083 | bond->dev->name, newval->string, newval->value); |
1084 | bond->params.arp_all_targets = newval->value; | |
d5c84254 | 1085 | |
1086 | return 0; | |
1087 | } | |
0a98a0d1 | 1088 | |
f3253339 | 1089 | static int bond_option_primary_set(struct bonding *bond, |
28f084cc | 1090 | const struct bond_opt_value *newval) |
0a98a0d1 | 1091 | { |
180222f0 | 1092 | char *p, *primary = newval->string; |
0a98a0d1 | 1093 | struct list_head *iter; |
1094 | struct slave *slave; | |
0a98a0d1 | 1095 | |
1096 | block_netpoll_tx(); | |
1097 | read_lock(&bond->lock); | |
1098 | write_lock_bh(&bond->curr_slave_lock); | |
1099 | ||
180222f0 NA |
1100 | p = strchr(primary, '\n'); |
1101 | if (p) | |
1102 | *p = '\0'; | |
0a98a0d1 | 1103 | /* check to see if we are clearing primary */ |
1104 | if (!strlen(primary)) { | |
90194264 | 1105 | pr_info("%s: Setting primary slave to None\n", bond->dev->name); |
0a98a0d1 | 1106 | bond->primary_slave = NULL; |
1107 | memset(bond->params.primary, 0, sizeof(bond->params.primary)); | |
1108 | bond_select_active_slave(bond); | |
1109 | goto out; | |
1110 | } | |
1111 | ||
1112 | bond_for_each_slave(bond, slave, iter) { | |
1113 | if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) { | |
90194264 | 1114 | pr_info("%s: Setting %s as primary slave\n", |
0a98a0d1 | 1115 | bond->dev->name, slave->dev->name); |
1116 | bond->primary_slave = slave; | |
1117 | strcpy(bond->params.primary, slave->dev->name); | |
1118 | bond_select_active_slave(bond); | |
1119 | goto out; | |
1120 | } | |
1121 | } | |
1122 | ||
c59ab673 | 1123 | if (bond->primary_slave) { |
90194264 | 1124 | pr_info("%s: Setting primary slave to None\n", bond->dev->name); |
c59ab673 | 1125 | bond->primary_slave = NULL; |
1126 | bond_select_active_slave(bond); | |
1127 | } | |
0a98a0d1 | 1128 | strncpy(bond->params.primary, primary, IFNAMSIZ); |
1129 | bond->params.primary[IFNAMSIZ - 1] = 0; | |
1130 | ||
90194264 | 1131 | pr_info("%s: Recording %s as primary, but it has not been enslaved to %s yet\n", |
0a98a0d1 | 1132 | bond->dev->name, primary, bond->dev->name); |
1133 | ||
1134 | out: | |
1135 | write_unlock_bh(&bond->curr_slave_lock); | |
1136 | read_unlock(&bond->lock); | |
1137 | unblock_netpoll_tx(); | |
1138 | ||
180222f0 | 1139 | return 0; |
0a98a0d1 | 1140 | } |
8a41ae44 | 1141 | |
f3253339 | 1142 | static int bond_option_primary_reselect_set(struct bonding *bond, |
28f084cc | 1143 | const struct bond_opt_value *newval) |
8a41ae44 | 1144 | { |
90194264 | 1145 | pr_info("%s: Setting primary_reselect to %s (%llu)\n", |
388d3a6d NA |
1146 | bond->dev->name, newval->string, newval->value); |
1147 | bond->params.primary_reselect = newval->value; | |
8a41ae44 | 1148 | |
1149 | block_netpoll_tx(); | |
1150 | write_lock_bh(&bond->curr_slave_lock); | |
1151 | bond_select_active_slave(bond); | |
1152 | write_unlock_bh(&bond->curr_slave_lock); | |
1153 | unblock_netpoll_tx(); | |
1154 | ||
1155 | return 0; | |
1156 | } | |
89901972 | 1157 | |
f3253339 | 1158 | static int bond_option_fail_over_mac_set(struct bonding *bond, |
28f084cc | 1159 | const struct bond_opt_value *newval) |
89901972 | 1160 | { |
90194264 | 1161 | pr_info("%s: Setting fail_over_mac to %s (%llu)\n", |
1df6b6aa NA |
1162 | bond->dev->name, newval->string, newval->value); |
1163 | bond->params.fail_over_mac = newval->value; | |
89901972 | 1164 | |
1165 | return 0; | |
1166 | } | |
f70161c6 | 1167 | |
f3253339 | 1168 | static int bond_option_xmit_hash_policy_set(struct bonding *bond, |
28f084cc | 1169 | const struct bond_opt_value *newval) |
f70161c6 | 1170 | { |
90194264 | 1171 | pr_info("%s: Setting xmit hash policy to %s (%llu)\n", |
a4b32ce7 NA |
1172 | bond->dev->name, newval->string, newval->value); |
1173 | bond->params.xmit_policy = newval->value; | |
f70161c6 | 1174 | |
1175 | return 0; | |
1176 | } | |
d8838de7 | 1177 | |
f3253339 | 1178 | static int bond_option_resend_igmp_set(struct bonding *bond, |
28f084cc | 1179 | const struct bond_opt_value *newval) |
d8838de7 | 1180 | { |
90194264 | 1181 | pr_info("%s: Setting resend_igmp to %llu\n", |
105c8fb6 NA |
1182 | bond->dev->name, newval->value); |
1183 | bond->params.resend_igmp = newval->value; | |
d8838de7 | 1184 | |
1185 | return 0; | |
1186 | } | |
2c9839c1 | 1187 | |
f3253339 | 1188 | static int bond_option_num_peer_notif_set(struct bonding *bond, |
28f084cc | 1189 | const struct bond_opt_value *newval) |
2c9839c1 | 1190 | { |
ef56becb NA |
1191 | bond->params.num_peer_notif = newval->value; |
1192 | ||
2c9839c1 | 1193 | return 0; |
1194 | } | |
1cc0b1e3 | 1195 | |
f3253339 | 1196 | static int bond_option_all_slaves_active_set(struct bonding *bond, |
28f084cc | 1197 | const struct bond_opt_value *newval) |
1cc0b1e3 | 1198 | { |
1199 | struct list_head *iter; | |
1200 | struct slave *slave; | |
1201 | ||
3df01162 | 1202 | if (newval->value == bond->params.all_slaves_active) |
1cc0b1e3 | 1203 | return 0; |
3df01162 | 1204 | bond->params.all_slaves_active = newval->value; |
1cc0b1e3 | 1205 | bond_for_each_slave(bond, slave, iter) { |
1206 | if (!bond_is_active_slave(slave)) { | |
3df01162 | 1207 | if (newval->value) |
1cc0b1e3 | 1208 | slave->inactive = 0; |
1209 | else | |
1210 | slave->inactive = 1; | |
1211 | } | |
1212 | } | |
1213 | ||
1214 | return 0; | |
1215 | } | |
7d101008 | 1216 | |
f3253339 | 1217 | static int bond_option_min_links_set(struct bonding *bond, |
28f084cc | 1218 | const struct bond_opt_value *newval) |
7d101008 | 1219 | { |
633ddc9e NA |
1220 | pr_info("%s: Setting min links value to %llu\n", |
1221 | bond->dev->name, newval->value); | |
1222 | bond->params.min_links = newval->value; | |
7d101008 | 1223 | |
1224 | return 0; | |
1225 | } | |
8d836d09 | 1226 | |
f3253339 | 1227 | static int bond_option_lp_interval_set(struct bonding *bond, |
28f084cc | 1228 | const struct bond_opt_value *newval) |
8d836d09 | 1229 | { |
4325b374 | 1230 | bond->params.lp_interval = newval->value; |
8d836d09 | 1231 | |
1232 | return 0; | |
1233 | } | |
c13ab3ff | 1234 | |
f3253339 | 1235 | static int bond_option_pps_set(struct bonding *bond, |
28f084cc | 1236 | const struct bond_opt_value *newval) |
c13ab3ff | 1237 | { |
aa59d851 NA |
1238 | bond->params.packets_per_slave = newval->value; |
1239 | if (newval->value > 0) { | |
809fa972 | 1240 | bond->params.reciprocal_packets_per_slave = |
aa59d851 | 1241 | reciprocal_value(newval->value); |
809fa972 HFS |
1242 | } else { |
1243 | /* reciprocal_packets_per_slave is unused if | |
1244 | * packets_per_slave is 0 or 1, just initialize it | |
1245 | */ | |
1246 | bond->params.reciprocal_packets_per_slave = | |
1247 | (struct reciprocal_value) { 0 }; | |
1248 | } | |
c13ab3ff | 1249 | |
1250 | return 0; | |
1251 | } | |
998e40bb | 1252 | |
f3253339 | 1253 | static int bond_option_lacp_rate_set(struct bonding *bond, |
28f084cc | 1254 | const struct bond_opt_value *newval) |
998e40bb | 1255 | { |
90194264 | 1256 | pr_info("%s: Setting LACP rate to %s (%llu)\n", |
d3131de7 NA |
1257 | bond->dev->name, newval->string, newval->value); |
1258 | bond->params.lacp_fast = newval->value; | |
3243c47b | 1259 | bond_3ad_update_lacp_rate(bond); |
998e40bb | 1260 | |
1261 | return 0; | |
1262 | } | |
ec029fac | 1263 | |
f3253339 | 1264 | static int bond_option_ad_select_set(struct bonding *bond, |
28f084cc | 1265 | const struct bond_opt_value *newval) |
ec029fac | 1266 | { |
90194264 | 1267 | pr_info("%s: Setting ad_select to %s (%llu)\n", |
9e5f5eeb NA |
1268 | bond->dev->name, newval->string, newval->value); |
1269 | bond->params.ad_select = newval->value; | |
ec029fac | 1270 | |
1271 | return 0; | |
1272 | } | |
24089ba1 | 1273 | |
f3253339 | 1274 | static int bond_option_queue_id_set(struct bonding *bond, |
28f084cc | 1275 | const struct bond_opt_value *newval) |
24089ba1 NA |
1276 | { |
1277 | struct slave *slave, *update_slave; | |
1278 | struct net_device *sdev; | |
1279 | struct list_head *iter; | |
1280 | char *delim; | |
1281 | int ret = 0; | |
1282 | u16 qid; | |
1283 | ||
1284 | /* delim will point to queue id if successful */ | |
1285 | delim = strchr(newval->string, ':'); | |
1286 | if (!delim) | |
1287 | goto err_no_cmd; | |
1288 | ||
1289 | /* Terminate string that points to device name and bump it | |
1290 | * up one, so we can read the queue id there. | |
1291 | */ | |
1292 | *delim = '\0'; | |
1293 | if (sscanf(++delim, "%hd\n", &qid) != 1) | |
1294 | goto err_no_cmd; | |
1295 | ||
1296 | /* Check buffer length, valid ifname and queue id */ | |
c313c89e | 1297 | if (!dev_valid_name(newval->string) || |
24089ba1 NA |
1298 | qid > bond->dev->real_num_tx_queues) |
1299 | goto err_no_cmd; | |
1300 | ||
1301 | /* Get the pointer to that interface if it exists */ | |
1302 | sdev = __dev_get_by_name(dev_net(bond->dev), newval->string); | |
1303 | if (!sdev) | |
1304 | goto err_no_cmd; | |
1305 | ||
1306 | /* Search for thes slave and check for duplicate qids */ | |
1307 | update_slave = NULL; | |
1308 | bond_for_each_slave(bond, slave, iter) { | |
1309 | if (sdev == slave->dev) | |
1310 | /* We don't need to check the matching | |
1311 | * slave for dups, since we're overwriting it | |
1312 | */ | |
1313 | update_slave = slave; | |
1314 | else if (qid && qid == slave->queue_id) { | |
1315 | goto err_no_cmd; | |
1316 | } | |
1317 | } | |
1318 | ||
1319 | if (!update_slave) | |
1320 | goto err_no_cmd; | |
1321 | ||
1322 | /* Actually set the qids for the slave */ | |
1323 | update_slave->queue_id = qid; | |
1324 | ||
1325 | out: | |
1326 | return ret; | |
1327 | ||
1328 | err_no_cmd: | |
90194264 | 1329 | pr_info("invalid input for queue_id set for %s\n", bond->dev->name); |
24089ba1 NA |
1330 | ret = -EPERM; |
1331 | goto out; | |
1332 | ||
1333 | } | |
0e2e5b66 | 1334 | |
f3253339 | 1335 | static int bond_option_slaves_set(struct bonding *bond, |
28f084cc | 1336 | const struct bond_opt_value *newval) |
0e2e5b66 NA |
1337 | { |
1338 | char command[IFNAMSIZ + 1] = { 0, }; | |
1339 | struct net_device *dev; | |
1340 | char *ifname; | |
1341 | int ret; | |
1342 | ||
1343 | sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/ | |
1344 | ifname = command + 1; | |
1345 | if ((strlen(command) <= 1) || | |
1346 | !dev_valid_name(ifname)) | |
1347 | goto err_no_cmd; | |
1348 | ||
1349 | dev = __dev_get_by_name(dev_net(bond->dev), ifname); | |
1350 | if (!dev) { | |
90194264 | 1351 | pr_info("%s: interface %s does not exist!\n", |
0e2e5b66 NA |
1352 | bond->dev->name, ifname); |
1353 | ret = -ENODEV; | |
1354 | goto out; | |
1355 | } | |
1356 | ||
1357 | switch (command[0]) { | |
1358 | case '+': | |
90194264 | 1359 | pr_info("%s: Adding slave %s\n", bond->dev->name, dev->name); |
0e2e5b66 NA |
1360 | ret = bond_enslave(bond->dev, dev); |
1361 | break; | |
1362 | ||
1363 | case '-': | |
90194264 | 1364 | pr_info("%s: Removing slave %s\n", bond->dev->name, dev->name); |
0e2e5b66 NA |
1365 | ret = bond_release(bond->dev, dev); |
1366 | break; | |
1367 | ||
1368 | default: | |
1369 | goto err_no_cmd; | |
1370 | } | |
1371 | ||
1372 | out: | |
1373 | return ret; | |
1374 | ||
1375 | err_no_cmd: | |
90194264 | 1376 | pr_err("no command found in slaves file for bond %s - use +ifname or -ifname\n", |
0e2e5b66 NA |
1377 | bond->dev->name); |
1378 | ret = -EPERM; | |
1379 | goto out; | |
1380 | } | |
e9f0fb88 MB |
1381 | |
1382 | static int bond_option_tlb_dynamic_lb_set(struct bonding *bond, | |
1383 | const struct bond_opt_value *newval) | |
1384 | { | |
1385 | pr_info("%s: Setting dynamic-lb to %s (%llu)\n", | |
1386 | bond->dev->name, newval->string, newval->value); | |
1387 | bond->params.tlb_dynamic_lb = newval->value; | |
1388 | ||
1389 | return 0; | |
1390 | } |