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 | ||
72be35fe JP |
12 | #include <linux/errno.h> |
13 | #include <linux/if.h> | |
d9e32b21 | 14 | #include <linux/netdevice.h> |
eb2d4c64 | 15 | #include <linux/spinlock.h> |
d9e32b21 | 16 | #include <linux/rcupdate.h> |
09117362 | 17 | #include <linux/ctype.h> |
4fb0ef58 | 18 | #include <linux/inet.h> |
72be35fe JP |
19 | #include "bonding.h" |
20 | ||
f3253339 | 21 | static int bond_option_active_slave_set(struct bonding *bond, |
28f084cc | 22 | const struct bond_opt_value *newval); |
f3253339 | 23 | static int bond_option_miimon_set(struct bonding *bond, |
28f084cc | 24 | const struct bond_opt_value *newval); |
f3253339 | 25 | static int bond_option_updelay_set(struct bonding *bond, |
28f084cc | 26 | const struct bond_opt_value *newval); |
f3253339 | 27 | static int bond_option_downdelay_set(struct bonding *bond, |
28f084cc | 28 | const struct bond_opt_value *newval); |
f3253339 | 29 | static int bond_option_use_carrier_set(struct bonding *bond, |
28f084cc | 30 | const struct bond_opt_value *newval); |
f3253339 | 31 | static int bond_option_arp_interval_set(struct bonding *bond, |
28f084cc | 32 | const struct bond_opt_value *newval); |
f3253339 | 33 | static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target); |
34 | static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target); | |
35 | static int bond_option_arp_ip_targets_set(struct bonding *bond, | |
28f084cc | 36 | const struct bond_opt_value *newval); |
f3253339 | 37 | static int bond_option_arp_validate_set(struct bonding *bond, |
28f084cc | 38 | const struct bond_opt_value *newval); |
f3253339 | 39 | static int bond_option_arp_all_targets_set(struct bonding *bond, |
28f084cc | 40 | const struct bond_opt_value *newval); |
f3253339 | 41 | static int bond_option_primary_set(struct bonding *bond, |
28f084cc | 42 | const struct bond_opt_value *newval); |
f3253339 | 43 | static int bond_option_primary_reselect_set(struct bonding *bond, |
28f084cc | 44 | const struct bond_opt_value *newval); |
f3253339 | 45 | static int bond_option_fail_over_mac_set(struct bonding *bond, |
28f084cc | 46 | const struct bond_opt_value *newval); |
f3253339 | 47 | static int bond_option_xmit_hash_policy_set(struct bonding *bond, |
28f084cc | 48 | const struct bond_opt_value *newval); |
f3253339 | 49 | static int bond_option_resend_igmp_set(struct bonding *bond, |
28f084cc | 50 | const struct bond_opt_value *newval); |
f3253339 | 51 | static int bond_option_num_peer_notif_set(struct bonding *bond, |
28f084cc | 52 | const struct bond_opt_value *newval); |
f3253339 | 53 | static int bond_option_all_slaves_active_set(struct bonding *bond, |
28f084cc | 54 | const struct bond_opt_value *newval); |
f3253339 | 55 | static int bond_option_min_links_set(struct bonding *bond, |
28f084cc | 56 | const struct bond_opt_value *newval); |
f3253339 | 57 | static int bond_option_lp_interval_set(struct bonding *bond, |
28f084cc | 58 | const struct bond_opt_value *newval); |
f3253339 | 59 | static int bond_option_pps_set(struct bonding *bond, |
28f084cc | 60 | const struct bond_opt_value *newval); |
f3253339 | 61 | static int bond_option_lacp_rate_set(struct bonding *bond, |
28f084cc | 62 | const struct bond_opt_value *newval); |
f3253339 | 63 | static int bond_option_ad_select_set(struct bonding *bond, |
28f084cc | 64 | const struct bond_opt_value *newval); |
f3253339 | 65 | static int bond_option_queue_id_set(struct bonding *bond, |
28f084cc | 66 | const struct bond_opt_value *newval); |
f3253339 | 67 | static int bond_option_mode_set(struct bonding *bond, |
28f084cc | 68 | const struct bond_opt_value *newval); |
f3253339 | 69 | static int bond_option_slaves_set(struct bonding *bond, |
28f084cc | 70 | const struct bond_opt_value *newval); |
e9f0fb88 MB |
71 | static int bond_option_tlb_dynamic_lb_set(struct bonding *bond, |
72 | const struct bond_opt_value *newval); | |
f3253339 | 73 | |
74 | ||
75 | static const struct bond_opt_value bond_mode_tbl[] = { | |
2b3798d5 NA |
76 | { "balance-rr", BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT}, |
77 | { "active-backup", BOND_MODE_ACTIVEBACKUP, 0}, | |
78 | { "balance-xor", BOND_MODE_XOR, 0}, | |
79 | { "broadcast", BOND_MODE_BROADCAST, 0}, | |
80 | { "802.3ad", BOND_MODE_8023AD, 0}, | |
81 | { "balance-tlb", BOND_MODE_TLB, 0}, | |
82 | { "balance-alb", BOND_MODE_ALB, 0}, | |
83 | { NULL, -1, 0}, | |
84 | }; | |
85 | ||
f3253339 | 86 | static const struct bond_opt_value bond_pps_tbl[] = { |
aa59d851 NA |
87 | { "default", 1, BOND_VALFLAG_DEFAULT}, |
88 | { "maxval", USHRT_MAX, BOND_VALFLAG_MAX}, | |
89 | { NULL, -1, 0}, | |
90 | }; | |
91 | ||
f3253339 | 92 | static const struct bond_opt_value bond_xmit_hashtype_tbl[] = { |
a4b32ce7 NA |
93 | { "layer2", BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT}, |
94 | { "layer3+4", BOND_XMIT_POLICY_LAYER34, 0}, | |
95 | { "layer2+3", BOND_XMIT_POLICY_LAYER23, 0}, | |
96 | { "encap2+3", BOND_XMIT_POLICY_ENCAP23, 0}, | |
97 | { "encap3+4", BOND_XMIT_POLICY_ENCAP34, 0}, | |
98 | { NULL, -1, 0}, | |
99 | }; | |
100 | ||
f3253339 | 101 | static const struct bond_opt_value bond_arp_validate_tbl[] = { |
896149ff VF |
102 | { "none", BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT}, |
103 | { "active", BOND_ARP_VALIDATE_ACTIVE, 0}, | |
104 | { "backup", BOND_ARP_VALIDATE_BACKUP, 0}, | |
105 | { "all", BOND_ARP_VALIDATE_ALL, 0}, | |
106 | { "filter", BOND_ARP_FILTER, 0}, | |
107 | { "filter_active", BOND_ARP_FILTER_ACTIVE, 0}, | |
108 | { "filter_backup", BOND_ARP_FILTER_BACKUP, 0}, | |
109 | { NULL, -1, 0}, | |
16228881 NA |
110 | }; |
111 | ||
f3253339 | 112 | static const struct bond_opt_value bond_arp_all_targets_tbl[] = { |
edf36b24 NA |
113 | { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT}, |
114 | { "all", BOND_ARP_TARGETS_ALL, 0}, | |
115 | { NULL, -1, 0}, | |
116 | }; | |
117 | ||
f3253339 | 118 | static const struct bond_opt_value bond_fail_over_mac_tbl[] = { |
1df6b6aa NA |
119 | { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT}, |
120 | { "active", BOND_FOM_ACTIVE, 0}, | |
121 | { "follow", BOND_FOM_FOLLOW, 0}, | |
122 | { NULL, -1, 0}, | |
123 | }; | |
124 | ||
f3253339 | 125 | static const struct bond_opt_value bond_intmax_tbl[] = { |
7bdb04ed NA |
126 | { "off", 0, BOND_VALFLAG_DEFAULT}, |
127 | { "maxval", INT_MAX, BOND_VALFLAG_MAX}, | |
81c70806 | 128 | { NULL, -1, 0} |
7bdb04ed NA |
129 | }; |
130 | ||
f3253339 | 131 | static const struct bond_opt_value bond_lacp_rate_tbl[] = { |
d3131de7 NA |
132 | { "slow", AD_LACP_SLOW, 0}, |
133 | { "fast", AD_LACP_FAST, 0}, | |
134 | { NULL, -1, 0}, | |
135 | }; | |
136 | ||
f3253339 | 137 | static const struct bond_opt_value bond_ad_select_tbl[] = { |
9e5f5eeb NA |
138 | { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT}, |
139 | { "bandwidth", BOND_AD_BANDWIDTH, 0}, | |
140 | { "count", BOND_AD_COUNT, 0}, | |
141 | { NULL, -1, 0}, | |
142 | }; | |
143 | ||
f3253339 | 144 | static const struct bond_opt_value bond_num_peer_notif_tbl[] = { |
ef56becb NA |
145 | { "off", 0, 0}, |
146 | { "maxval", 255, BOND_VALFLAG_MAX}, | |
147 | { "default", 1, BOND_VALFLAG_DEFAULT}, | |
148 | { NULL, -1, 0} | |
149 | }; | |
150 | ||
f3253339 | 151 | static const struct bond_opt_value bond_primary_reselect_tbl[] = { |
388d3a6d NA |
152 | { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT}, |
153 | { "better", BOND_PRI_RESELECT_BETTER, 0}, | |
154 | { "failure", BOND_PRI_RESELECT_FAILURE, 0}, | |
155 | { NULL, -1}, | |
156 | }; | |
157 | ||
f3253339 | 158 | static const struct bond_opt_value bond_use_carrier_tbl[] = { |
0fff0608 NA |
159 | { "off", 0, 0}, |
160 | { "on", 1, BOND_VALFLAG_DEFAULT}, | |
161 | { NULL, -1, 0} | |
162 | }; | |
163 | ||
f3253339 | 164 | static const struct bond_opt_value bond_all_slaves_active_tbl[] = { |
3df01162 NA |
165 | { "off", 0, BOND_VALFLAG_DEFAULT}, |
166 | { "on", 1, 0}, | |
167 | { NULL, -1, 0} | |
168 | }; | |
169 | ||
f3253339 | 170 | static const struct bond_opt_value bond_resend_igmp_tbl[] = { |
105c8fb6 NA |
171 | { "off", 0, 0}, |
172 | { "maxval", 255, BOND_VALFLAG_MAX}, | |
173 | { "default", 1, BOND_VALFLAG_DEFAULT}, | |
174 | { NULL, -1, 0} | |
175 | }; | |
176 | ||
f3253339 | 177 | static const struct bond_opt_value bond_lp_interval_tbl[] = { |
4325b374 NA |
178 | { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT}, |
179 | { "maxval", INT_MAX, BOND_VALFLAG_MAX}, | |
5bd4e4c1 | 180 | { NULL, -1, 0}, |
4325b374 NA |
181 | }; |
182 | ||
e9f0fb88 MB |
183 | static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = { |
184 | { "off", 0, 0}, | |
185 | { "on", 1, BOND_VALFLAG_DEFAULT}, | |
186 | { NULL, -1, 0} | |
187 | }; | |
188 | ||
f3253339 | 189 | static const struct bond_option bond_opts[] = { |
2b3798d5 NA |
190 | [BOND_OPT_MODE] = { |
191 | .id = BOND_OPT_MODE, | |
192 | .name = "mode", | |
193 | .desc = "bond device mode", | |
194 | .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN, | |
195 | .values = bond_mode_tbl, | |
196 | .set = bond_option_mode_set | |
197 | }, | |
aa59d851 NA |
198 | [BOND_OPT_PACKETS_PER_SLAVE] = { |
199 | .id = BOND_OPT_PACKETS_PER_SLAVE, | |
200 | .name = "packets_per_slave", | |
201 | .desc = "Packets to send per slave in RR mode", | |
202 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)), | |
203 | .values = bond_pps_tbl, | |
204 | .set = bond_option_pps_set | |
205 | }, | |
a4b32ce7 NA |
206 | [BOND_OPT_XMIT_HASH] = { |
207 | .id = BOND_OPT_XMIT_HASH, | |
208 | .name = "xmit_hash_policy", | |
f05b42ea | 209 | .desc = "balance-xor, 802.3ad, and tlb hashing method", |
a4b32ce7 NA |
210 | .values = bond_xmit_hashtype_tbl, |
211 | .set = bond_option_xmit_hash_policy_set | |
212 | }, | |
16228881 NA |
213 | [BOND_OPT_ARP_VALIDATE] = { |
214 | .id = BOND_OPT_ARP_VALIDATE, | |
215 | .name = "arp_validate", | |
216 | .desc = "validate src/dst of ARP probes", | |
13ac34a8 VF |
217 | .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) | |
218 | BIT(BOND_MODE_ALB), | |
16228881 NA |
219 | .values = bond_arp_validate_tbl, |
220 | .set = bond_option_arp_validate_set | |
221 | }, | |
edf36b24 NA |
222 | [BOND_OPT_ARP_ALL_TARGETS] = { |
223 | .id = BOND_OPT_ARP_ALL_TARGETS, | |
224 | .name = "arp_all_targets", | |
225 | .desc = "fail on any/all arp targets timeout", | |
226 | .values = bond_arp_all_targets_tbl, | |
227 | .set = bond_option_arp_all_targets_set | |
228 | }, | |
1df6b6aa NA |
229 | [BOND_OPT_FAIL_OVER_MAC] = { |
230 | .id = BOND_OPT_FAIL_OVER_MAC, | |
231 | .name = "fail_over_mac", | |
232 | .desc = "For active-backup, do not set all slaves to the same MAC", | |
233 | .flags = BOND_OPTFLAG_NOSLAVES, | |
234 | .values = bond_fail_over_mac_tbl, | |
235 | .set = bond_option_fail_over_mac_set | |
236 | }, | |
7bdb04ed NA |
237 | [BOND_OPT_ARP_INTERVAL] = { |
238 | .id = BOND_OPT_ARP_INTERVAL, | |
239 | .name = "arp_interval", | |
240 | .desc = "arp interval in milliseconds", | |
241 | .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) | | |
242 | BIT(BOND_MODE_ALB), | |
243 | .values = bond_intmax_tbl, | |
244 | .set = bond_option_arp_interval_set | |
245 | }, | |
4fb0ef58 NA |
246 | [BOND_OPT_ARP_TARGETS] = { |
247 | .id = BOND_OPT_ARP_TARGETS, | |
248 | .name = "arp_ip_target", | |
249 | .desc = "arp targets in n.n.n.n form", | |
250 | .flags = BOND_OPTFLAG_RAWVAL, | |
251 | .set = bond_option_arp_ip_targets_set | |
252 | }, | |
25a9b54a NA |
253 | [BOND_OPT_DOWNDELAY] = { |
254 | .id = BOND_OPT_DOWNDELAY, | |
255 | .name = "downdelay", | |
256 | .desc = "Delay before considering link down, in milliseconds", | |
257 | .values = bond_intmax_tbl, | |
258 | .set = bond_option_downdelay_set | |
259 | }, | |
e4994612 NA |
260 | [BOND_OPT_UPDELAY] = { |
261 | .id = BOND_OPT_UPDELAY, | |
262 | .name = "updelay", | |
263 | .desc = "Delay before considering link up, in milliseconds", | |
264 | .values = bond_intmax_tbl, | |
265 | .set = bond_option_updelay_set | |
266 | }, | |
d3131de7 NA |
267 | [BOND_OPT_LACP_RATE] = { |
268 | .id = BOND_OPT_LACP_RATE, | |
269 | .name = "lacp_rate", | |
270 | .desc = "LACPDU tx rate to request from 802.3ad partner", | |
271 | .flags = BOND_OPTFLAG_IFDOWN, | |
272 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)), | |
273 | .values = bond_lacp_rate_tbl, | |
274 | .set = bond_option_lacp_rate_set | |
275 | }, | |
633ddc9e NA |
276 | [BOND_OPT_MINLINKS] = { |
277 | .id = BOND_OPT_MINLINKS, | |
278 | .name = "min_links", | |
279 | .desc = "Minimum number of available links before turning on carrier", | |
280 | .values = bond_intmax_tbl, | |
281 | .set = bond_option_min_links_set | |
282 | }, | |
9e5f5eeb NA |
283 | [BOND_OPT_AD_SELECT] = { |
284 | .id = BOND_OPT_AD_SELECT, | |
285 | .name = "ad_select", | |
286 | .desc = "803.ad aggregation selection logic", | |
287 | .flags = BOND_OPTFLAG_IFDOWN, | |
288 | .values = bond_ad_select_tbl, | |
289 | .set = bond_option_ad_select_set | |
290 | }, | |
ef56becb NA |
291 | [BOND_OPT_NUM_PEER_NOTIF] = { |
292 | .id = BOND_OPT_NUM_PEER_NOTIF, | |
293 | .name = "num_unsol_na", | |
294 | .desc = "Number of peer notifications to send on failover event", | |
295 | .values = bond_num_peer_notif_tbl, | |
296 | .set = bond_option_num_peer_notif_set | |
297 | }, | |
b98d9c66 NA |
298 | [BOND_OPT_MIIMON] = { |
299 | .id = BOND_OPT_MIIMON, | |
300 | .name = "miimon", | |
301 | .desc = "Link check interval in milliseconds", | |
302 | .values = bond_intmax_tbl, | |
303 | .set = bond_option_miimon_set | |
304 | }, | |
180222f0 NA |
305 | [BOND_OPT_PRIMARY] = { |
306 | .id = BOND_OPT_PRIMARY, | |
307 | .name = "primary", | |
308 | .desc = "Primary network device to use", | |
309 | .flags = BOND_OPTFLAG_RAWVAL, | |
310 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) | | |
311 | BIT(BOND_MODE_TLB) | | |
312 | BIT(BOND_MODE_ALB)), | |
313 | .set = bond_option_primary_set | |
314 | }, | |
388d3a6d NA |
315 | [BOND_OPT_PRIMARY_RESELECT] = { |
316 | .id = BOND_OPT_PRIMARY_RESELECT, | |
317 | .name = "primary_reselect", | |
318 | .desc = "Reselect primary slave once it comes up", | |
319 | .values = bond_primary_reselect_tbl, | |
320 | .set = bond_option_primary_reselect_set | |
321 | }, | |
0fff0608 NA |
322 | [BOND_OPT_USE_CARRIER] = { |
323 | .id = BOND_OPT_USE_CARRIER, | |
324 | .name = "use_carrier", | |
325 | .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon", | |
326 | .values = bond_use_carrier_tbl, | |
327 | .set = bond_option_use_carrier_set | |
328 | }, | |
d1fbd3ed NA |
329 | [BOND_OPT_ACTIVE_SLAVE] = { |
330 | .id = BOND_OPT_ACTIVE_SLAVE, | |
331 | .name = "active_slave", | |
332 | .desc = "Currently active slave", | |
333 | .flags = BOND_OPTFLAG_RAWVAL, | |
334 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) | | |
335 | BIT(BOND_MODE_TLB) | | |
336 | BIT(BOND_MODE_ALB)), | |
337 | .set = bond_option_active_slave_set | |
338 | }, | |
24089ba1 NA |
339 | [BOND_OPT_QUEUE_ID] = { |
340 | .id = BOND_OPT_QUEUE_ID, | |
341 | .name = "queue_id", | |
342 | .desc = "Set queue id of a slave", | |
343 | .flags = BOND_OPTFLAG_RAWVAL, | |
344 | .set = bond_option_queue_id_set | |
345 | }, | |
3df01162 NA |
346 | [BOND_OPT_ALL_SLAVES_ACTIVE] = { |
347 | .id = BOND_OPT_ALL_SLAVES_ACTIVE, | |
348 | .name = "all_slaves_active", | |
349 | .desc = "Keep all frames received on an interface by setting active flag for all slaves", | |
350 | .values = bond_all_slaves_active_tbl, | |
351 | .set = bond_option_all_slaves_active_set | |
352 | }, | |
105c8fb6 NA |
353 | [BOND_OPT_RESEND_IGMP] = { |
354 | .id = BOND_OPT_RESEND_IGMP, | |
355 | .name = "resend_igmp", | |
356 | .desc = "Number of IGMP membership reports to send on link failure", | |
357 | .values = bond_resend_igmp_tbl, | |
358 | .set = bond_option_resend_igmp_set | |
359 | }, | |
4325b374 NA |
360 | [BOND_OPT_LP_INTERVAL] = { |
361 | .id = BOND_OPT_LP_INTERVAL, | |
362 | .name = "lp_interval", | |
363 | .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch", | |
364 | .values = bond_lp_interval_tbl, | |
365 | .set = bond_option_lp_interval_set | |
366 | }, | |
0e2e5b66 NA |
367 | [BOND_OPT_SLAVES] = { |
368 | .id = BOND_OPT_SLAVES, | |
369 | .name = "slaves", | |
370 | .desc = "Slave membership management", | |
371 | .flags = BOND_OPTFLAG_RAWVAL, | |
372 | .set = bond_option_slaves_set | |
373 | }, | |
e9f0fb88 MB |
374 | [BOND_OPT_TLB_DYNAMIC_LB] = { |
375 | .id = BOND_OPT_TLB_DYNAMIC_LB, | |
dc3e5d18 | 376 | .name = "tlb_dynamic_lb", |
e9f0fb88 MB |
377 | .desc = "Enable dynamic flow shuffling", |
378 | .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_TLB)), | |
379 | .values = bond_tlb_dynamic_lb_tbl, | |
380 | .flags = BOND_OPTFLAG_IFDOWN, | |
381 | .set = bond_option_tlb_dynamic_lb_set, | |
382 | }, | |
09117362 NA |
383 | { } |
384 | }; | |
385 | ||
dc3e5d18 NA |
386 | /* Searches for an option by name */ |
387 | const struct bond_option *bond_opt_get_by_name(const char *name) | |
388 | { | |
389 | const struct bond_option *opt; | |
390 | int option; | |
391 | ||
392 | for (option = 0; option < BOND_OPT_LAST; option++) { | |
393 | opt = bond_opt_get(option); | |
394 | if (opt && !strcmp(opt->name, name)) | |
395 | return opt; | |
396 | } | |
397 | ||
398 | return NULL; | |
399 | } | |
400 | ||
09117362 | 401 | /* Searches for a value in opt's values[] table */ |
f3253339 | 402 | const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val) |
09117362 | 403 | { |
f3253339 | 404 | const struct bond_option *opt; |
09117362 NA |
405 | int i; |
406 | ||
407 | opt = bond_opt_get(option); | |
408 | if (WARN_ON(!opt)) | |
409 | return NULL; | |
410 | for (i = 0; opt->values && opt->values[i].string; i++) | |
411 | if (opt->values[i].value == val) | |
412 | return &opt->values[i]; | |
413 | ||
414 | return NULL; | |
415 | } | |
416 | ||
417 | /* Searches for a value in opt's values[] table which matches the flagmask */ | |
f3253339 | 418 | static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt, |
09117362 NA |
419 | u32 flagmask) |
420 | { | |
421 | int i; | |
422 | ||
423 | for (i = 0; opt->values && opt->values[i].string; i++) | |
424 | if (opt->values[i].flags & flagmask) | |
425 | return &opt->values[i]; | |
426 | ||
427 | return NULL; | |
428 | } | |
429 | ||
430 | /* If maxval is missing then there's no range to check. In case minval is | |
431 | * missing then it's considered to be 0. | |
432 | */ | |
433 | static bool bond_opt_check_range(const struct bond_option *opt, u64 val) | |
434 | { | |
f3253339 | 435 | const struct bond_opt_value *minval, *maxval; |
09117362 NA |
436 | |
437 | minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); | |
438 | maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); | |
439 | if (!maxval || (minval && val < minval->value) || val > maxval->value) | |
440 | return false; | |
441 | ||
442 | return true; | |
443 | } | |
444 | ||
445 | /** | |
446 | * bond_opt_parse - parse option value | |
447 | * @opt: the option to parse against | |
448 | * @val: value to parse | |
449 | * | |
450 | * This function tries to extract the value from @val and check if it's | |
451 | * a possible match for the option and returns NULL if a match isn't found, | |
452 | * or the struct_opt_value that matched. It also strips the new line from | |
453 | * @val->string if it's present. | |
454 | */ | |
f3253339 | 455 | const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt, |
456 | struct bond_opt_value *val) | |
09117362 NA |
457 | { |
458 | char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, }; | |
f3253339 | 459 | const struct bond_opt_value *tbl; |
460 | const struct bond_opt_value *ret = NULL; | |
09117362 NA |
461 | bool checkval; |
462 | int i, rv; | |
463 | ||
464 | /* No parsing if the option wants a raw val */ | |
465 | if (opt->flags & BOND_OPTFLAG_RAWVAL) | |
466 | return val; | |
467 | ||
468 | tbl = opt->values; | |
469 | if (!tbl) | |
470 | goto out; | |
471 | ||
472 | /* ULLONG_MAX is used to bypass string processing */ | |
473 | checkval = val->value != ULLONG_MAX; | |
474 | if (!checkval) { | |
475 | if (!val->string) | |
476 | goto out; | |
477 | p = strchr(val->string, '\n'); | |
478 | if (p) | |
479 | *p = '\0'; | |
480 | for (p = val->string; *p; p++) | |
481 | if (!(isdigit(*p) || isspace(*p))) | |
482 | break; | |
483 | /* The following code extracts the string to match or the value | |
484 | * and sets checkval appropriately | |
485 | */ | |
486 | if (*p) { | |
487 | rv = sscanf(val->string, "%32s", valstr); | |
488 | } else { | |
489 | rv = sscanf(val->string, "%llu", &val->value); | |
490 | checkval = true; | |
491 | } | |
492 | if (!rv) | |
493 | goto out; | |
494 | } | |
495 | ||
496 | for (i = 0; tbl[i].string; i++) { | |
497 | /* Check for exact match */ | |
498 | if (checkval) { | |
499 | if (val->value == tbl[i].value) | |
500 | ret = &tbl[i]; | |
501 | } else { | |
502 | if (!strcmp(valstr, "default") && | |
503 | (tbl[i].flags & BOND_VALFLAG_DEFAULT)) | |
504 | ret = &tbl[i]; | |
505 | ||
506 | if (!strcmp(valstr, tbl[i].string)) | |
507 | ret = &tbl[i]; | |
508 | } | |
509 | /* Found an exact match */ | |
510 | if (ret) | |
511 | goto out; | |
512 | } | |
513 | /* Possible range match */ | |
514 | if (checkval && bond_opt_check_range(opt, val->value)) | |
515 | ret = val; | |
516 | out: | |
517 | return ret; | |
518 | } | |
519 | ||
520 | /* Check opt's dependencies against bond mode and currently set options */ | |
521 | static int bond_opt_check_deps(struct bonding *bond, | |
522 | const struct bond_option *opt) | |
523 | { | |
524 | struct bond_params *params = &bond->params; | |
525 | ||
526 | if (test_bit(params->mode, &opt->unsuppmodes)) | |
527 | return -EACCES; | |
528 | if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond)) | |
529 | return -ENOTEMPTY; | |
530 | if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP)) | |
531 | return -EBUSY; | |
532 | ||
533 | return 0; | |
534 | } | |
535 | ||
536 | static void bond_opt_dep_print(struct bonding *bond, | |
537 | const struct bond_option *opt) | |
538 | { | |
28f084cc | 539 | const struct bond_opt_value *modeval; |
09117362 NA |
540 | struct bond_params *params; |
541 | ||
542 | params = &bond->params; | |
2b3798d5 | 543 | modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode); |
09117362 | 544 | if (test_bit(params->mode, &opt->unsuppmodes)) |
2de390ba VF |
545 | netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n", |
546 | opt->name, modeval->string, modeval->value); | |
09117362 NA |
547 | } |
548 | ||
549 | static void bond_opt_error_interpret(struct bonding *bond, | |
550 | const struct bond_option *opt, | |
28f084cc | 551 | int error, const struct bond_opt_value *val) |
09117362 | 552 | { |
28f084cc | 553 | const struct bond_opt_value *minval, *maxval; |
09117362 NA |
554 | char *p; |
555 | ||
556 | switch (error) { | |
557 | case -EINVAL: | |
558 | if (val) { | |
559 | if (val->string) { | |
560 | /* sometimes RAWVAL opts may have new lines */ | |
561 | p = strchr(val->string, '\n'); | |
562 | if (p) | |
563 | *p = '\0'; | |
2de390ba VF |
564 | netdev_err(bond->dev, "option %s: invalid value (%s)\n", |
565 | opt->name, val->string); | |
09117362 | 566 | } else { |
2de390ba VF |
567 | netdev_err(bond->dev, "option %s: invalid value (%llu)\n", |
568 | opt->name, val->value); | |
09117362 NA |
569 | } |
570 | } | |
571 | minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); | |
572 | maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); | |
573 | if (!maxval) | |
574 | break; | |
2de390ba VF |
575 | netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n", |
576 | opt->name, minval ? minval->value : 0, maxval->value); | |
09117362 NA |
577 | break; |
578 | case -EACCES: | |
579 | bond_opt_dep_print(bond, opt); | |
580 | break; | |
581 | case -ENOTEMPTY: | |
2de390ba VF |
582 | netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n", |
583 | opt->name); | |
09117362 NA |
584 | break; |
585 | case -EBUSY: | |
2de390ba VF |
586 | netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n", |
587 | opt->name); | |
09117362 NA |
588 | break; |
589 | default: | |
590 | break; | |
591 | } | |
592 | } | |
593 | ||
594 | /** | |
595 | * __bond_opt_set - set a bonding option | |
596 | * @bond: target bond device | |
597 | * @option: option to set | |
598 | * @val: value to set it to | |
599 | * | |
600 | * This function is used to change the bond's option value, it can be | |
601 | * used for both enabling/changing an option and for disabling it. RTNL lock | |
602 | * must be obtained before calling this function. | |
603 | */ | |
604 | int __bond_opt_set(struct bonding *bond, | |
605 | unsigned int option, struct bond_opt_value *val) | |
606 | { | |
28f084cc | 607 | const struct bond_opt_value *retval = NULL; |
09117362 NA |
608 | const struct bond_option *opt; |
609 | int ret = -ENOENT; | |
610 | ||
611 | ASSERT_RTNL(); | |
612 | ||
613 | opt = bond_opt_get(option); | |
614 | if (WARN_ON(!val) || WARN_ON(!opt)) | |
615 | goto out; | |
616 | ret = bond_opt_check_deps(bond, opt); | |
617 | if (ret) | |
618 | goto out; | |
619 | retval = bond_opt_parse(opt, val); | |
620 | if (!retval) { | |
621 | ret = -EINVAL; | |
622 | goto out; | |
623 | } | |
624 | ret = opt->set(bond, retval); | |
625 | out: | |
626 | if (ret) | |
627 | bond_opt_error_interpret(bond, opt, ret, val); | |
628 | ||
629 | return ret; | |
630 | } | |
631 | ||
632 | /** | |
633 | * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set | |
634 | * @bond: target bond device | |
635 | * @option: option to set | |
636 | * @buf: value to set it to | |
637 | * | |
638 | * This function tries to acquire RTNL without blocking and if successful | |
639 | * calls __bond_opt_set. It is mainly used for sysfs option manipulation. | |
640 | */ | |
641 | int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf) | |
642 | { | |
643 | struct bond_opt_value optval; | |
644 | int ret; | |
645 | ||
646 | if (!rtnl_trylock()) | |
647 | return restart_syscall(); | |
648 | bond_opt_initstr(&optval, buf); | |
649 | ret = __bond_opt_set(bond, option, &optval); | |
650 | rtnl_unlock(); | |
651 | ||
652 | return ret; | |
653 | } | |
654 | ||
655 | /** | |
656 | * bond_opt_get - get a pointer to an option | |
657 | * @option: option for which to return a pointer | |
658 | * | |
659 | * This function checks if option is valid and if so returns a pointer | |
660 | * to its entry in the bond_opts[] option array. | |
661 | */ | |
f3253339 | 662 | const struct bond_option *bond_opt_get(unsigned int option) |
09117362 NA |
663 | { |
664 | if (!BOND_OPT_VALID(option)) | |
665 | return NULL; | |
666 | ||
667 | return &bond_opts[option]; | |
668 | } | |
669 | ||
ff11d8b2 NA |
670 | static int bond_option_mode_set(struct bonding *bond, |
671 | const struct bond_opt_value *newval) | |
72be35fe | 672 | { |
267bed77 | 673 | if (!bond_mode_uses_arp(newval->value) && bond->params.arp_interval) { |
2de390ba VF |
674 | netdev_info(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n", |
675 | newval->string); | |
fe9d04af | 676 | /* disable arp monitoring */ |
677 | bond->params.arp_interval = 0; | |
678 | /* set miimon to default value */ | |
679 | bond->params.miimon = BOND_DEFAULT_MIIMON; | |
2de390ba VF |
680 | netdev_info(bond->dev, "Setting MII monitoring interval to %d\n", |
681 | bond->params.miimon); | |
72be35fe JP |
682 | } |
683 | ||
684 | /* don't cache arp_validate between modes */ | |
685 | bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; | |
2b3798d5 NA |
686 | bond->params.mode = newval->value; |
687 | ||
72be35fe JP |
688 | return 0; |
689 | } | |
d9e32b21 | 690 | |
752d48b5 JP |
691 | static struct net_device *__bond_option_active_slave_get(struct bonding *bond, |
692 | struct slave *slave) | |
693 | { | |
ec0865a9 | 694 | return bond_uses_primary(bond) && slave ? slave->dev : NULL; |
752d48b5 JP |
695 | } |
696 | ||
697 | struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) | |
698 | { | |
699 | struct slave *slave = rcu_dereference(bond->curr_active_slave); | |
700 | ||
701 | return __bond_option_active_slave_get(bond, slave); | |
702 | } | |
703 | ||
f3253339 | 704 | static int bond_option_active_slave_set(struct bonding *bond, |
28f084cc | 705 | const struct bond_opt_value *newval) |
d9e32b21 | 706 | { |
d1fbd3ed NA |
707 | char ifname[IFNAMSIZ] = { 0, }; |
708 | struct net_device *slave_dev; | |
d9e32b21 JP |
709 | int ret = 0; |
710 | ||
d1fbd3ed NA |
711 | sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */ |
712 | if (!strlen(ifname) || newval->string[0] == '\n') { | |
713 | slave_dev = NULL; | |
714 | } else { | |
715 | slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname); | |
716 | if (!slave_dev) | |
717 | return -ENODEV; | |
718 | } | |
719 | ||
d9e32b21 JP |
720 | if (slave_dev) { |
721 | if (!netif_is_bond_slave(slave_dev)) { | |
2de390ba VF |
722 | netdev_err(bond->dev, "Device %s is not bonding slave\n", |
723 | slave_dev->name); | |
d9e32b21 JP |
724 | return -EINVAL; |
725 | } | |
726 | ||
727 | if (bond->dev != netdev_master_upper_dev_get(slave_dev)) { | |
2de390ba VF |
728 | netdev_err(bond->dev, "Device %s is not our slave\n", |
729 | slave_dev->name); | |
d9e32b21 JP |
730 | return -EINVAL; |
731 | } | |
732 | } | |
733 | ||
d9e32b21 | 734 | block_netpoll_tx(); |
d9e32b21 JP |
735 | write_lock_bh(&bond->curr_slave_lock); |
736 | ||
737 | /* check to see if we are clearing active */ | |
738 | if (!slave_dev) { | |
2de390ba | 739 | netdev_info(bond->dev, "Clearing current active slave\n"); |
8800a244 | 740 | RCU_INIT_POINTER(bond->curr_active_slave, NULL); |
d9e32b21 JP |
741 | bond_select_active_slave(bond); |
742 | } else { | |
4740d638 | 743 | struct slave *old_active = bond_deref_active_protected(bond); |
d9e32b21 JP |
744 | struct slave *new_active = bond_slave_get_rtnl(slave_dev); |
745 | ||
746 | BUG_ON(!new_active); | |
747 | ||
748 | if (new_active == old_active) { | |
749 | /* do nothing */ | |
2de390ba VF |
750 | netdev_info(bond->dev, "%s is already the current active slave\n", |
751 | new_active->dev->name); | |
d9e32b21 JP |
752 | } else { |
753 | if (old_active && (new_active->link == BOND_LINK_UP) && | |
b6adc610 | 754 | bond_slave_is_up(new_active)) { |
2de390ba VF |
755 | netdev_info(bond->dev, "Setting %s as active slave\n", |
756 | new_active->dev->name); | |
d9e32b21 JP |
757 | bond_change_active_slave(bond, new_active); |
758 | } else { | |
2de390ba VF |
759 | netdev_err(bond->dev, "Could not set %s as active slave; either %s is down or the link is down\n", |
760 | new_active->dev->name, | |
761 | new_active->dev->name); | |
d9e32b21 JP |
762 | ret = -EINVAL; |
763 | } | |
764 | } | |
765 | } | |
766 | ||
767 | write_unlock_bh(&bond->curr_slave_lock); | |
d9e32b21 | 768 | unblock_netpoll_tx(); |
d1fbd3ed | 769 | |
d9e32b21 JP |
770 | return ret; |
771 | } | |
eecdaa6e | 772 | |
dc3e5d18 NA |
773 | /* There are two tricky bits here. First, if MII monitoring is activated, then |
774 | * we must disable ARP monitoring. Second, if the timer isn't running, we must | |
775 | * start it. | |
776 | */ | |
f3253339 | 777 | static int bond_option_miimon_set(struct bonding *bond, |
28f084cc | 778 | const struct bond_opt_value *newval) |
eecdaa6e | 779 | { |
2de390ba VF |
780 | netdev_info(bond->dev, "Setting MII monitoring interval to %llu\n", |
781 | newval->value); | |
b98d9c66 | 782 | bond->params.miimon = newval->value; |
eecdaa6e | 783 | if (bond->params.updelay) |
2de390ba | 784 | netdev_info(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n", |
eecdaa6e | 785 | bond->params.updelay * bond->params.miimon); |
786 | if (bond->params.downdelay) | |
2de390ba VF |
787 | netdev_info(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n", |
788 | bond->params.downdelay * bond->params.miimon); | |
b98d9c66 | 789 | if (newval->value && bond->params.arp_interval) { |
2de390ba | 790 | netdev_info(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n"); |
eecdaa6e | 791 | bond->params.arp_interval = 0; |
792 | if (bond->params.arp_validate) | |
793 | bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; | |
794 | } | |
795 | if (bond->dev->flags & IFF_UP) { | |
796 | /* If the interface is up, we may need to fire off | |
797 | * the MII timer. If the interface is down, the | |
798 | * timer will get fired off when the open function | |
799 | * is called. | |
800 | */ | |
b98d9c66 | 801 | if (!newval->value) { |
eecdaa6e | 802 | cancel_delayed_work_sync(&bond->mii_work); |
803 | } else { | |
804 | cancel_delayed_work_sync(&bond->arp_work); | |
805 | queue_delayed_work(bond->wq, &bond->mii_work, 0); | |
806 | } | |
807 | } | |
b98d9c66 | 808 | |
eecdaa6e | 809 | return 0; |
810 | } | |
25852e29 | 811 | |
dc3e5d18 NA |
812 | /* Set up and down delays. These must be multiples of the |
813 | * MII monitoring value, and are stored internally as the multiplier. | |
814 | * Thus, we must translate to MS for the real world. | |
815 | */ | |
f3253339 | 816 | static int bond_option_updelay_set(struct bonding *bond, |
28f084cc | 817 | const struct bond_opt_value *newval) |
25852e29 | 818 | { |
0681a282 NA |
819 | int value = newval->value; |
820 | ||
e4994612 | 821 | if (!bond->params.miimon) { |
2de390ba | 822 | netdev_err(bond->dev, "Unable to set up delay as MII monitoring is disabled\n"); |
25852e29 | 823 | return -EPERM; |
824 | } | |
0681a282 | 825 | if ((value % bond->params.miimon) != 0) { |
2de390ba VF |
826 | netdev_warn(bond->dev, "up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", |
827 | value, bond->params.miimon, | |
828 | (value / bond->params.miimon) * | |
829 | bond->params.miimon); | |
25852e29 | 830 | } |
0681a282 | 831 | bond->params.updelay = value / bond->params.miimon; |
2de390ba VF |
832 | netdev_info(bond->dev, "Setting up delay to %d\n", |
833 | bond->params.updelay * bond->params.miimon); | |
25852e29 | 834 | |
835 | return 0; | |
836 | } | |
c7461f9b | 837 | |
f3253339 | 838 | static int bond_option_downdelay_set(struct bonding *bond, |
28f084cc | 839 | const struct bond_opt_value *newval) |
c7461f9b | 840 | { |
0681a282 NA |
841 | int value = newval->value; |
842 | ||
25a9b54a | 843 | if (!bond->params.miimon) { |
2de390ba | 844 | netdev_err(bond->dev, "Unable to set down delay as MII monitoring is disabled\n"); |
c7461f9b | 845 | return -EPERM; |
846 | } | |
0681a282 | 847 | if ((value % bond->params.miimon) != 0) { |
2de390ba VF |
848 | netdev_warn(bond->dev, "down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n", |
849 | value, bond->params.miimon, | |
850 | (value / bond->params.miimon) * | |
851 | bond->params.miimon); | |
c7461f9b | 852 | } |
0681a282 | 853 | bond->params.downdelay = value / bond->params.miimon; |
2de390ba VF |
854 | netdev_info(bond->dev, "Setting down delay to %d\n", |
855 | bond->params.downdelay * bond->params.miimon); | |
c7461f9b | 856 | |
857 | return 0; | |
858 | } | |
9f53e14e | 859 | |
f3253339 | 860 | static int bond_option_use_carrier_set(struct bonding *bond, |
28f084cc | 861 | const struct bond_opt_value *newval) |
9f53e14e | 862 | { |
2de390ba VF |
863 | netdev_info(bond->dev, "Setting use_carrier to %llu\n", |
864 | newval->value); | |
0fff0608 | 865 | bond->params.use_carrier = newval->value; |
9f53e14e | 866 | |
867 | return 0; | |
868 | } | |
06151dbc | 869 | |
dc3e5d18 NA |
870 | /* There are two tricky bits here. First, if ARP monitoring is activated, then |
871 | * we must disable MII monitoring. Second, if the ARP timer isn't running, | |
872 | * we must start it. | |
873 | */ | |
f3253339 | 874 | static int bond_option_arp_interval_set(struct bonding *bond, |
28f084cc | 875 | const struct bond_opt_value *newval) |
06151dbc | 876 | { |
2de390ba VF |
877 | netdev_info(bond->dev, "Setting ARP monitoring interval to %llu\n", |
878 | newval->value); | |
7bdb04ed NA |
879 | bond->params.arp_interval = newval->value; |
880 | if (newval->value) { | |
06151dbc | 881 | if (bond->params.miimon) { |
2de390ba | 882 | netdev_info(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n"); |
06151dbc | 883 | bond->params.miimon = 0; |
884 | } | |
885 | if (!bond->params.arp_targets[0]) | |
2de390ba | 886 | netdev_info(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n"); |
06151dbc | 887 | } |
888 | if (bond->dev->flags & IFF_UP) { | |
889 | /* If the interface is up, we may need to fire off | |
890 | * the ARP timer. If the interface is down, the | |
891 | * timer will get fired off when the open function | |
892 | * is called. | |
893 | */ | |
7bdb04ed | 894 | if (!newval->value) { |
06151dbc | 895 | if (bond->params.arp_validate) |
896 | bond->recv_probe = NULL; | |
897 | cancel_delayed_work_sync(&bond->arp_work); | |
898 | } else { | |
899 | /* arp_validate can be set only in active-backup mode */ | |
3fe68df9 | 900 | bond->recv_probe = bond_arp_rcv; |
06151dbc | 901 | cancel_delayed_work_sync(&bond->mii_work); |
902 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
903 | } | |
904 | } | |
905 | ||
906 | return 0; | |
907 | } | |
7f28fa10 | 908 | |
909 | static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot, | |
910 | __be32 target, | |
911 | unsigned long last_rx) | |
912 | { | |
913 | __be32 *targets = bond->params.arp_targets; | |
914 | struct list_head *iter; | |
915 | struct slave *slave; | |
916 | ||
917 | if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) { | |
918 | bond_for_each_slave(bond, slave, iter) | |
919 | slave->target_last_arp_rx[slot] = last_rx; | |
920 | targets[slot] = target; | |
921 | } | |
922 | } | |
923 | ||
924 | static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) | |
925 | { | |
926 | __be32 *targets = bond->params.arp_targets; | |
927 | int ind; | |
928 | ||
2807a9fe | 929 | if (!bond_is_ip_target_ok(target)) { |
2de390ba VF |
930 | netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n", |
931 | &target); | |
7f28fa10 | 932 | return -EINVAL; |
933 | } | |
934 | ||
935 | if (bond_get_targets_ip(targets, target) != -1) { /* dup */ | |
2de390ba VF |
936 | netdev_err(bond->dev, "ARP target %pI4 is already present\n", |
937 | &target); | |
7f28fa10 | 938 | return -EINVAL; |
939 | } | |
940 | ||
941 | ind = bond_get_targets_ip(targets, 0); /* first free slot */ | |
942 | if (ind == -1) { | |
2de390ba | 943 | netdev_err(bond->dev, "ARP target table is full!\n"); |
7f28fa10 | 944 | return -EINVAL; |
945 | } | |
946 | ||
2de390ba | 947 | netdev_info(bond->dev, "Adding ARP target %pI4\n", &target); |
7f28fa10 | 948 | |
949 | _bond_options_arp_ip_target_set(bond, ind, target, jiffies); | |
950 | ||
951 | return 0; | |
952 | } | |
953 | ||
f3253339 | 954 | static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) |
7f28fa10 | 955 | { |
956 | int ret; | |
957 | ||
958 | /* not to race with bond_arp_rcv */ | |
959 | write_lock_bh(&bond->lock); | |
960 | ret = _bond_option_arp_ip_target_add(bond, target); | |
961 | write_unlock_bh(&bond->lock); | |
962 | ||
963 | return ret; | |
964 | } | |
965 | ||
f3253339 | 966 | static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target) |
7f28fa10 | 967 | { |
968 | __be32 *targets = bond->params.arp_targets; | |
969 | struct list_head *iter; | |
970 | struct slave *slave; | |
971 | unsigned long *targets_rx; | |
972 | int ind, i; | |
973 | ||
2807a9fe | 974 | if (!bond_is_ip_target_ok(target)) { |
2de390ba VF |
975 | netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n", |
976 | &target); | |
7f28fa10 | 977 | return -EINVAL; |
978 | } | |
979 | ||
980 | ind = bond_get_targets_ip(targets, target); | |
981 | if (ind == -1) { | |
2de390ba VF |
982 | netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n", |
983 | &target); | |
7f28fa10 | 984 | return -EINVAL; |
985 | } | |
986 | ||
987 | if (ind == 0 && !targets[1] && bond->params.arp_interval) | |
2de390ba | 988 | netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n"); |
7f28fa10 | 989 | |
2de390ba | 990 | netdev_info(bond->dev, "Removing ARP target %pI4\n", &target); |
7f28fa10 | 991 | |
992 | /* not to race with bond_arp_rcv */ | |
993 | write_lock_bh(&bond->lock); | |
994 | ||
995 | bond_for_each_slave(bond, slave, iter) { | |
996 | targets_rx = slave->target_last_arp_rx; | |
997 | for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) | |
998 | targets_rx[i] = targets_rx[i+1]; | |
999 | targets_rx[i] = 0; | |
1000 | } | |
1001 | for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) | |
1002 | targets[i] = targets[i+1]; | |
1003 | targets[i] = 0; | |
1004 | ||
1005 | write_unlock_bh(&bond->lock); | |
1006 | ||
1007 | return 0; | |
1008 | } | |
1009 | ||
4fb0ef58 | 1010 | void bond_option_arp_ip_targets_clear(struct bonding *bond) |
7f28fa10 | 1011 | { |
4fb0ef58 | 1012 | int i; |
7f28fa10 | 1013 | |
1014 | /* not to race with bond_arp_rcv */ | |
1015 | write_lock_bh(&bond->lock); | |
7f28fa10 | 1016 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) |
1017 | _bond_options_arp_ip_target_set(bond, i, 0, 0); | |
4fb0ef58 NA |
1018 | write_unlock_bh(&bond->lock); |
1019 | } | |
7f28fa10 | 1020 | |
f3253339 | 1021 | static int bond_option_arp_ip_targets_set(struct bonding *bond, |
28f084cc | 1022 | const struct bond_opt_value *newval) |
4fb0ef58 NA |
1023 | { |
1024 | int ret = -EPERM; | |
1025 | __be32 target; | |
1026 | ||
1027 | if (newval->string) { | |
1028 | if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) { | |
2de390ba VF |
1029 | netdev_err(bond->dev, "invalid ARP target %pI4 specified\n", |
1030 | &target); | |
4fb0ef58 NA |
1031 | return ret; |
1032 | } | |
1033 | if (newval->string[0] == '+') | |
1034 | ret = bond_option_arp_ip_target_add(bond, target); | |
1035 | else if (newval->string[0] == '-') | |
1036 | ret = bond_option_arp_ip_target_rem(bond, target); | |
1037 | else | |
2de390ba | 1038 | netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n"); |
4fb0ef58 NA |
1039 | } else { |
1040 | target = newval->value; | |
1041 | ret = bond_option_arp_ip_target_add(bond, target); | |
7f28fa10 | 1042 | } |
1043 | ||
7f28fa10 | 1044 | return ret; |
1045 | } | |
29c49482 | 1046 | |
f3253339 | 1047 | static int bond_option_arp_validate_set(struct bonding *bond, |
28f084cc | 1048 | const struct bond_opt_value *newval) |
29c49482 | 1049 | { |
2de390ba VF |
1050 | netdev_info(bond->dev, "Setting arp_validate to %s (%llu)\n", |
1051 | newval->string, newval->value); | |
29c49482 | 1052 | |
1053 | if (bond->dev->flags & IFF_UP) { | |
16228881 | 1054 | if (!newval->value) |
29c49482 | 1055 | bond->recv_probe = NULL; |
1056 | else if (bond->params.arp_interval) | |
1057 | bond->recv_probe = bond_arp_rcv; | |
1058 | } | |
16228881 | 1059 | bond->params.arp_validate = newval->value; |
29c49482 | 1060 | |
1061 | return 0; | |
1062 | } | |
d5c84254 | 1063 | |
f3253339 | 1064 | static int bond_option_arp_all_targets_set(struct bonding *bond, |
28f084cc | 1065 | const struct bond_opt_value *newval) |
d5c84254 | 1066 | { |
2de390ba VF |
1067 | netdev_info(bond->dev, "Setting arp_all_targets to %s (%llu)\n", |
1068 | newval->string, newval->value); | |
edf36b24 | 1069 | bond->params.arp_all_targets = newval->value; |
d5c84254 | 1070 | |
1071 | return 0; | |
1072 | } | |
0a98a0d1 | 1073 | |
f3253339 | 1074 | static int bond_option_primary_set(struct bonding *bond, |
28f084cc | 1075 | const struct bond_opt_value *newval) |
0a98a0d1 | 1076 | { |
180222f0 | 1077 | char *p, *primary = newval->string; |
0a98a0d1 | 1078 | struct list_head *iter; |
1079 | struct slave *slave; | |
0a98a0d1 | 1080 | |
1081 | block_netpoll_tx(); | |
1082 | read_lock(&bond->lock); | |
1083 | write_lock_bh(&bond->curr_slave_lock); | |
1084 | ||
180222f0 NA |
1085 | p = strchr(primary, '\n'); |
1086 | if (p) | |
1087 | *p = '\0'; | |
0a98a0d1 | 1088 | /* check to see if we are clearing primary */ |
1089 | if (!strlen(primary)) { | |
2de390ba | 1090 | netdev_info(bond->dev, "Setting primary slave to None\n"); |
0a98a0d1 | 1091 | bond->primary_slave = NULL; |
1092 | memset(bond->params.primary, 0, sizeof(bond->params.primary)); | |
1093 | bond_select_active_slave(bond); | |
1094 | goto out; | |
1095 | } | |
1096 | ||
1097 | bond_for_each_slave(bond, slave, iter) { | |
1098 | if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) { | |
2de390ba VF |
1099 | netdev_info(bond->dev, "Setting %s as primary slave\n", |
1100 | slave->dev->name); | |
0a98a0d1 | 1101 | bond->primary_slave = slave; |
1102 | strcpy(bond->params.primary, slave->dev->name); | |
1103 | bond_select_active_slave(bond); | |
1104 | goto out; | |
1105 | } | |
1106 | } | |
1107 | ||
c59ab673 | 1108 | if (bond->primary_slave) { |
2de390ba | 1109 | netdev_info(bond->dev, "Setting primary slave to None\n"); |
c59ab673 | 1110 | bond->primary_slave = NULL; |
1111 | bond_select_active_slave(bond); | |
1112 | } | |
0a98a0d1 | 1113 | strncpy(bond->params.primary, primary, IFNAMSIZ); |
1114 | bond->params.primary[IFNAMSIZ - 1] = 0; | |
1115 | ||
2de390ba VF |
1116 | netdev_info(bond->dev, "Recording %s as primary, but it has not been enslaved to %s yet\n", |
1117 | primary, bond->dev->name); | |
0a98a0d1 | 1118 | |
1119 | out: | |
1120 | write_unlock_bh(&bond->curr_slave_lock); | |
1121 | read_unlock(&bond->lock); | |
1122 | unblock_netpoll_tx(); | |
1123 | ||
180222f0 | 1124 | return 0; |
0a98a0d1 | 1125 | } |
8a41ae44 | 1126 | |
f3253339 | 1127 | static int bond_option_primary_reselect_set(struct bonding *bond, |
28f084cc | 1128 | const struct bond_opt_value *newval) |
8a41ae44 | 1129 | { |
2de390ba VF |
1130 | netdev_info(bond->dev, "Setting primary_reselect to %s (%llu)\n", |
1131 | newval->string, newval->value); | |
388d3a6d | 1132 | bond->params.primary_reselect = newval->value; |
8a41ae44 | 1133 | |
1134 | block_netpoll_tx(); | |
1135 | write_lock_bh(&bond->curr_slave_lock); | |
1136 | bond_select_active_slave(bond); | |
1137 | write_unlock_bh(&bond->curr_slave_lock); | |
1138 | unblock_netpoll_tx(); | |
1139 | ||
1140 | return 0; | |
1141 | } | |
89901972 | 1142 | |
f3253339 | 1143 | static int bond_option_fail_over_mac_set(struct bonding *bond, |
28f084cc | 1144 | const struct bond_opt_value *newval) |
89901972 | 1145 | { |
2de390ba VF |
1146 | netdev_info(bond->dev, "Setting fail_over_mac to %s (%llu)\n", |
1147 | newval->string, newval->value); | |
1df6b6aa | 1148 | bond->params.fail_over_mac = newval->value; |
89901972 | 1149 | |
1150 | return 0; | |
1151 | } | |
f70161c6 | 1152 | |
f3253339 | 1153 | static int bond_option_xmit_hash_policy_set(struct bonding *bond, |
28f084cc | 1154 | const struct bond_opt_value *newval) |
f70161c6 | 1155 | { |
2de390ba VF |
1156 | netdev_info(bond->dev, "Setting xmit hash policy to %s (%llu)\n", |
1157 | newval->string, newval->value); | |
a4b32ce7 | 1158 | bond->params.xmit_policy = newval->value; |
f70161c6 | 1159 | |
1160 | return 0; | |
1161 | } | |
d8838de7 | 1162 | |
f3253339 | 1163 | static int bond_option_resend_igmp_set(struct bonding *bond, |
28f084cc | 1164 | const struct bond_opt_value *newval) |
d8838de7 | 1165 | { |
2de390ba VF |
1166 | netdev_info(bond->dev, "Setting resend_igmp to %llu\n", |
1167 | newval->value); | |
105c8fb6 | 1168 | bond->params.resend_igmp = newval->value; |
d8838de7 | 1169 | |
1170 | return 0; | |
1171 | } | |
2c9839c1 | 1172 | |
f3253339 | 1173 | static int bond_option_num_peer_notif_set(struct bonding *bond, |
28f084cc | 1174 | const struct bond_opt_value *newval) |
2c9839c1 | 1175 | { |
ef56becb NA |
1176 | bond->params.num_peer_notif = newval->value; |
1177 | ||
2c9839c1 | 1178 | return 0; |
1179 | } | |
1cc0b1e3 | 1180 | |
f3253339 | 1181 | static int bond_option_all_slaves_active_set(struct bonding *bond, |
28f084cc | 1182 | const struct bond_opt_value *newval) |
1cc0b1e3 | 1183 | { |
1184 | struct list_head *iter; | |
1185 | struct slave *slave; | |
1186 | ||
3df01162 | 1187 | if (newval->value == bond->params.all_slaves_active) |
1cc0b1e3 | 1188 | return 0; |
3df01162 | 1189 | bond->params.all_slaves_active = newval->value; |
1cc0b1e3 | 1190 | bond_for_each_slave(bond, slave, iter) { |
1191 | if (!bond_is_active_slave(slave)) { | |
3df01162 | 1192 | if (newval->value) |
1cc0b1e3 | 1193 | slave->inactive = 0; |
1194 | else | |
1195 | slave->inactive = 1; | |
1196 | } | |
1197 | } | |
1198 | ||
1199 | return 0; | |
1200 | } | |
7d101008 | 1201 | |
f3253339 | 1202 | static int bond_option_min_links_set(struct bonding *bond, |
28f084cc | 1203 | const struct bond_opt_value *newval) |
7d101008 | 1204 | { |
2de390ba VF |
1205 | netdev_info(bond->dev, "Setting min links value to %llu\n", |
1206 | newval->value); | |
633ddc9e | 1207 | bond->params.min_links = newval->value; |
7d101008 | 1208 | |
1209 | return 0; | |
1210 | } | |
8d836d09 | 1211 | |
f3253339 | 1212 | static int bond_option_lp_interval_set(struct bonding *bond, |
28f084cc | 1213 | const struct bond_opt_value *newval) |
8d836d09 | 1214 | { |
4325b374 | 1215 | bond->params.lp_interval = newval->value; |
8d836d09 | 1216 | |
1217 | return 0; | |
1218 | } | |
c13ab3ff | 1219 | |
f3253339 | 1220 | static int bond_option_pps_set(struct bonding *bond, |
28f084cc | 1221 | const struct bond_opt_value *newval) |
c13ab3ff | 1222 | { |
aa59d851 NA |
1223 | bond->params.packets_per_slave = newval->value; |
1224 | if (newval->value > 0) { | |
809fa972 | 1225 | bond->params.reciprocal_packets_per_slave = |
aa59d851 | 1226 | reciprocal_value(newval->value); |
809fa972 HFS |
1227 | } else { |
1228 | /* reciprocal_packets_per_slave is unused if | |
1229 | * packets_per_slave is 0 or 1, just initialize it | |
1230 | */ | |
1231 | bond->params.reciprocal_packets_per_slave = | |
1232 | (struct reciprocal_value) { 0 }; | |
1233 | } | |
c13ab3ff | 1234 | |
1235 | return 0; | |
1236 | } | |
998e40bb | 1237 | |
f3253339 | 1238 | static int bond_option_lacp_rate_set(struct bonding *bond, |
28f084cc | 1239 | const struct bond_opt_value *newval) |
998e40bb | 1240 | { |
2de390ba VF |
1241 | netdev_info(bond->dev, "Setting LACP rate to %s (%llu)\n", |
1242 | newval->string, newval->value); | |
d3131de7 | 1243 | bond->params.lacp_fast = newval->value; |
3243c47b | 1244 | bond_3ad_update_lacp_rate(bond); |
998e40bb | 1245 | |
1246 | return 0; | |
1247 | } | |
ec029fac | 1248 | |
f3253339 | 1249 | static int bond_option_ad_select_set(struct bonding *bond, |
28f084cc | 1250 | const struct bond_opt_value *newval) |
ec029fac | 1251 | { |
2de390ba VF |
1252 | netdev_info(bond->dev, "Setting ad_select to %s (%llu)\n", |
1253 | newval->string, newval->value); | |
9e5f5eeb | 1254 | bond->params.ad_select = newval->value; |
ec029fac | 1255 | |
1256 | return 0; | |
1257 | } | |
24089ba1 | 1258 | |
f3253339 | 1259 | static int bond_option_queue_id_set(struct bonding *bond, |
28f084cc | 1260 | const struct bond_opt_value *newval) |
24089ba1 NA |
1261 | { |
1262 | struct slave *slave, *update_slave; | |
1263 | struct net_device *sdev; | |
1264 | struct list_head *iter; | |
1265 | char *delim; | |
1266 | int ret = 0; | |
1267 | u16 qid; | |
1268 | ||
1269 | /* delim will point to queue id if successful */ | |
1270 | delim = strchr(newval->string, ':'); | |
1271 | if (!delim) | |
1272 | goto err_no_cmd; | |
1273 | ||
1274 | /* Terminate string that points to device name and bump it | |
1275 | * up one, so we can read the queue id there. | |
1276 | */ | |
1277 | *delim = '\0'; | |
1278 | if (sscanf(++delim, "%hd\n", &qid) != 1) | |
1279 | goto err_no_cmd; | |
1280 | ||
1281 | /* Check buffer length, valid ifname and queue id */ | |
c313c89e | 1282 | if (!dev_valid_name(newval->string) || |
24089ba1 NA |
1283 | qid > bond->dev->real_num_tx_queues) |
1284 | goto err_no_cmd; | |
1285 | ||
1286 | /* Get the pointer to that interface if it exists */ | |
1287 | sdev = __dev_get_by_name(dev_net(bond->dev), newval->string); | |
1288 | if (!sdev) | |
1289 | goto err_no_cmd; | |
1290 | ||
1291 | /* Search for thes slave and check for duplicate qids */ | |
1292 | update_slave = NULL; | |
1293 | bond_for_each_slave(bond, slave, iter) { | |
1294 | if (sdev == slave->dev) | |
1295 | /* We don't need to check the matching | |
1296 | * slave for dups, since we're overwriting it | |
1297 | */ | |
1298 | update_slave = slave; | |
1299 | else if (qid && qid == slave->queue_id) { | |
1300 | goto err_no_cmd; | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | if (!update_slave) | |
1305 | goto err_no_cmd; | |
1306 | ||
1307 | /* Actually set the qids for the slave */ | |
1308 | update_slave->queue_id = qid; | |
1309 | ||
1310 | out: | |
1311 | return ret; | |
1312 | ||
1313 | err_no_cmd: | |
2de390ba | 1314 | netdev_info(bond->dev, "invalid input for queue_id set\n"); |
24089ba1 NA |
1315 | ret = -EPERM; |
1316 | goto out; | |
1317 | ||
1318 | } | |
0e2e5b66 | 1319 | |
f3253339 | 1320 | static int bond_option_slaves_set(struct bonding *bond, |
28f084cc | 1321 | const struct bond_opt_value *newval) |
0e2e5b66 NA |
1322 | { |
1323 | char command[IFNAMSIZ + 1] = { 0, }; | |
1324 | struct net_device *dev; | |
1325 | char *ifname; | |
1326 | int ret; | |
1327 | ||
1328 | sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/ | |
1329 | ifname = command + 1; | |
1330 | if ((strlen(command) <= 1) || | |
1331 | !dev_valid_name(ifname)) | |
1332 | goto err_no_cmd; | |
1333 | ||
1334 | dev = __dev_get_by_name(dev_net(bond->dev), ifname); | |
1335 | if (!dev) { | |
2de390ba VF |
1336 | netdev_info(bond->dev, "interface %s does not exist!\n", |
1337 | ifname); | |
0e2e5b66 NA |
1338 | ret = -ENODEV; |
1339 | goto out; | |
1340 | } | |
1341 | ||
1342 | switch (command[0]) { | |
1343 | case '+': | |
2de390ba | 1344 | netdev_info(bond->dev, "Adding slave %s\n", dev->name); |
0e2e5b66 NA |
1345 | ret = bond_enslave(bond->dev, dev); |
1346 | break; | |
1347 | ||
1348 | case '-': | |
2de390ba | 1349 | netdev_info(bond->dev, "Removing slave %s\n", dev->name); |
0e2e5b66 NA |
1350 | ret = bond_release(bond->dev, dev); |
1351 | break; | |
1352 | ||
1353 | default: | |
1354 | goto err_no_cmd; | |
1355 | } | |
1356 | ||
1357 | out: | |
1358 | return ret; | |
1359 | ||
1360 | err_no_cmd: | |
2de390ba | 1361 | netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n"); |
0e2e5b66 NA |
1362 | ret = -EPERM; |
1363 | goto out; | |
1364 | } | |
e9f0fb88 MB |
1365 | |
1366 | static int bond_option_tlb_dynamic_lb_set(struct bonding *bond, | |
1367 | const struct bond_opt_value *newval) | |
1368 | { | |
2de390ba VF |
1369 | netdev_info(bond->dev, "Setting dynamic-lb to %s (%llu)\n", |
1370 | newval->string, newval->value); | |
e9f0fb88 MB |
1371 | bond->params.tlb_dynamic_lb = newval->value; |
1372 | ||
1373 | return 0; | |
1374 | } |