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Commit | Line | Data |
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0a2a78c4 JP |
1 | /* |
2 | * drivers/net/bond/bond_netlink.c - Netlink interface for bonding | |
3 | * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us> | |
eecdaa6e | 4 | * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com> |
0a2a78c4 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/module.h> | |
15 | #include <linux/errno.h> | |
16 | #include <linux/netdevice.h> | |
17 | #include <linux/etherdevice.h> | |
18 | #include <linux/if_link.h> | |
19 | #include <linux/if_ether.h> | |
20 | #include <net/netlink.h> | |
21 | #include <net/rtnetlink.h> | |
22 | #include "bonding.h" | |
23 | ||
90af2311 JP |
24 | static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = { |
25 | [IFLA_BOND_MODE] = { .type = NLA_U8 }, | |
ec76aa49 | 26 | [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 }, |
eecdaa6e | 27 | [IFLA_BOND_MIIMON] = { .type = NLA_U32 }, |
25852e29 | 28 | [IFLA_BOND_UPDELAY] = { .type = NLA_U32 }, |
c7461f9b | 29 | [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 }, |
9f53e14e | 30 | [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 }, |
06151dbc | 31 | [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 }, |
7f28fa10 | 32 | [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED }, |
29c49482 | 33 | [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 }, |
d5c84254 | 34 | [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 }, |
0a98a0d1 | 35 | [IFLA_BOND_PRIMARY] = { .type = NLA_U32 }, |
8a41ae44 | 36 | [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 }, |
89901972 | 37 | [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 }, |
f70161c6 | 38 | [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 }, |
d8838de7 | 39 | [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 }, |
2c9839c1 | 40 | [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 }, |
1cc0b1e3 | 41 | [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 }, |
7d101008 | 42 | [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 }, |
90af2311 JP |
43 | }; |
44 | ||
0a2a78c4 JP |
45 | static int bond_validate(struct nlattr *tb[], struct nlattr *data[]) |
46 | { | |
47 | if (tb[IFLA_ADDRESS]) { | |
48 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
49 | return -EINVAL; | |
50 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
51 | return -EADDRNOTAVAIL; | |
52 | } | |
53 | return 0; | |
54 | } | |
55 | ||
90af2311 JP |
56 | static int bond_changelink(struct net_device *bond_dev, |
57 | struct nlattr *tb[], struct nlattr *data[]) | |
58 | { | |
59 | struct bonding *bond = netdev_priv(bond_dev); | |
06151dbc | 60 | int miimon = 0; |
90af2311 JP |
61 | int err; |
62 | ||
eecdaa6e | 63 | if (!data) |
64 | return 0; | |
65 | ||
66 | if (data[IFLA_BOND_MODE]) { | |
90af2311 JP |
67 | int mode = nla_get_u8(data[IFLA_BOND_MODE]); |
68 | ||
69 | err = bond_option_mode_set(bond, mode); | |
70 | if (err) | |
71 | return err; | |
72 | } | |
eecdaa6e | 73 | if (data[IFLA_BOND_ACTIVE_SLAVE]) { |
ec76aa49 JP |
74 | int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]); |
75 | struct net_device *slave_dev; | |
76 | ||
77 | if (ifindex == 0) { | |
78 | slave_dev = NULL; | |
79 | } else { | |
80 | slave_dev = __dev_get_by_index(dev_net(bond_dev), | |
81 | ifindex); | |
82 | if (!slave_dev) | |
83 | return -ENODEV; | |
84 | } | |
85 | err = bond_option_active_slave_set(bond, slave_dev); | |
86 | if (err) | |
87 | return err; | |
88 | } | |
eecdaa6e | 89 | if (data[IFLA_BOND_MIIMON]) { |
06151dbc | 90 | miimon = nla_get_u32(data[IFLA_BOND_MIIMON]); |
eecdaa6e | 91 | |
92 | err = bond_option_miimon_set(bond, miimon); | |
93 | if (err) | |
94 | return err; | |
95 | } | |
25852e29 | 96 | if (data[IFLA_BOND_UPDELAY]) { |
97 | int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]); | |
98 | ||
99 | err = bond_option_updelay_set(bond, updelay); | |
100 | if (err) | |
101 | return err; | |
102 | } | |
c7461f9b | 103 | if (data[IFLA_BOND_DOWNDELAY]) { |
104 | int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]); | |
105 | ||
106 | err = bond_option_downdelay_set(bond, downdelay); | |
107 | if (err) | |
108 | return err; | |
109 | } | |
9f53e14e | 110 | if (data[IFLA_BOND_USE_CARRIER]) { |
111 | int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]); | |
112 | ||
113 | err = bond_option_use_carrier_set(bond, use_carrier); | |
114 | if (err) | |
115 | return err; | |
116 | } | |
06151dbc | 117 | if (data[IFLA_BOND_ARP_INTERVAL]) { |
118 | int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]); | |
119 | ||
120 | if (arp_interval && miimon) { | |
121 | pr_err("%s: ARP monitoring cannot be used with MII monitoring.\n", | |
122 | bond->dev->name); | |
123 | return -EINVAL; | |
124 | } | |
125 | ||
126 | err = bond_option_arp_interval_set(bond, arp_interval); | |
127 | if (err) | |
128 | return err; | |
129 | } | |
7f28fa10 | 130 | if (data[IFLA_BOND_ARP_IP_TARGET]) { |
131 | __be32 targets[BOND_MAX_ARP_TARGETS] = { 0, }; | |
132 | struct nlattr *attr; | |
133 | int i = 0, rem; | |
134 | ||
135 | nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) { | |
e7ef941d | 136 | __be32 target = nla_get_be32(attr); |
7f28fa10 | 137 | targets[i++] = target; |
138 | } | |
139 | ||
140 | err = bond_option_arp_ip_targets_set(bond, targets, i); | |
141 | if (err) | |
142 | return err; | |
143 | } | |
29c49482 | 144 | if (data[IFLA_BOND_ARP_VALIDATE]) { |
145 | int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]); | |
146 | ||
147 | if (arp_validate && miimon) { | |
148 | pr_err("%s: ARP validating cannot be used with MII monitoring.\n", | |
149 | bond->dev->name); | |
150 | return -EINVAL; | |
151 | } | |
152 | ||
153 | err = bond_option_arp_validate_set(bond, arp_validate); | |
154 | if (err) | |
155 | return err; | |
156 | } | |
d5c84254 | 157 | if (data[IFLA_BOND_ARP_ALL_TARGETS]) { |
158 | int arp_all_targets = | |
159 | nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]); | |
160 | ||
161 | err = bond_option_arp_all_targets_set(bond, arp_all_targets); | |
162 | if (err) | |
163 | return err; | |
164 | } | |
0a98a0d1 | 165 | if (data[IFLA_BOND_PRIMARY]) { |
166 | int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]); | |
167 | struct net_device *dev; | |
168 | char *primary = ""; | |
169 | ||
170 | dev = __dev_get_by_index(dev_net(bond_dev), ifindex); | |
171 | if (dev) | |
172 | primary = dev->name; | |
173 | ||
174 | err = bond_option_primary_set(bond, primary); | |
175 | if (err) | |
176 | return err; | |
177 | } | |
8a41ae44 | 178 | if (data[IFLA_BOND_PRIMARY_RESELECT]) { |
179 | int primary_reselect = | |
180 | nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]); | |
181 | ||
182 | err = bond_option_primary_reselect_set(bond, primary_reselect); | |
183 | if (err) | |
184 | return err; | |
185 | } | |
89901972 | 186 | if (data[IFLA_BOND_FAIL_OVER_MAC]) { |
187 | int fail_over_mac = | |
188 | nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]); | |
189 | ||
190 | err = bond_option_fail_over_mac_set(bond, fail_over_mac); | |
191 | if (err) | |
192 | return err; | |
193 | } | |
f70161c6 | 194 | if (data[IFLA_BOND_XMIT_HASH_POLICY]) { |
195 | int xmit_hash_policy = | |
196 | nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]); | |
197 | ||
198 | err = bond_option_xmit_hash_policy_set(bond, xmit_hash_policy); | |
199 | if (err) | |
200 | return err; | |
201 | } | |
d8838de7 | 202 | if (data[IFLA_BOND_RESEND_IGMP]) { |
203 | int resend_igmp = | |
204 | nla_get_u32(data[IFLA_BOND_RESEND_IGMP]); | |
205 | ||
206 | err = bond_option_resend_igmp_set(bond, resend_igmp); | |
207 | if (err) | |
208 | return err; | |
209 | } | |
2c9839c1 | 210 | if (data[IFLA_BOND_NUM_PEER_NOTIF]) { |
211 | int num_peer_notif = | |
212 | nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]); | |
213 | ||
214 | err = bond_option_num_peer_notif_set(bond, num_peer_notif); | |
215 | if (err) | |
216 | return err; | |
217 | } | |
1cc0b1e3 | 218 | if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) { |
219 | int all_slaves_active = | |
220 | nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]); | |
221 | ||
222 | err = bond_option_all_slaves_active_set(bond, | |
223 | all_slaves_active); | |
224 | if (err) | |
225 | return err; | |
226 | } | |
7d101008 | 227 | if (data[IFLA_BOND_MIN_LINKS]) { |
228 | int min_links = | |
229 | nla_get_u32(data[IFLA_BOND_MIN_LINKS]); | |
230 | ||
231 | err = bond_option_min_links_set(bond, min_links); | |
232 | if (err) | |
233 | return err; | |
234 | } | |
90af2311 JP |
235 | return 0; |
236 | } | |
237 | ||
238 | static int bond_newlink(struct net *src_net, struct net_device *bond_dev, | |
239 | struct nlattr *tb[], struct nlattr *data[]) | |
240 | { | |
241 | int err; | |
242 | ||
243 | err = bond_changelink(bond_dev, tb, data); | |
244 | if (err < 0) | |
245 | return err; | |
246 | ||
247 | return register_netdevice(bond_dev); | |
248 | } | |
249 | ||
250 | static size_t bond_get_size(const struct net_device *bond_dev) | |
251 | { | |
e139862e | 252 | return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */ |
eecdaa6e | 253 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */ |
254 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */ | |
25852e29 | 255 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */ |
c7461f9b | 256 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */ |
9f53e14e | 257 | nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */ |
06151dbc | 258 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */ |
7f28fa10 | 259 | /* IFLA_BOND_ARP_IP_TARGET */ |
260 | nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS + | |
29c49482 | 261 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */ |
d5c84254 | 262 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */ |
0a98a0d1 | 263 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */ |
8a41ae44 | 264 | nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */ |
89901972 | 265 | nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */ |
f70161c6 | 266 | nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */ |
d8838de7 | 267 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */ |
2c9839c1 | 268 | nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */ |
1cc0b1e3 | 269 | nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */ |
7d101008 | 270 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */ |
eecdaa6e | 271 | 0; |
90af2311 JP |
272 | } |
273 | ||
274 | static int bond_fill_info(struct sk_buff *skb, | |
275 | const struct net_device *bond_dev) | |
276 | { | |
277 | struct bonding *bond = netdev_priv(bond_dev); | |
ec76aa49 | 278 | struct net_device *slave_dev = bond_option_active_slave_get(bond); |
7f28fa10 | 279 | struct nlattr *targets; |
280 | int i, targets_added; | |
90af2311 | 281 | |
eecdaa6e | 282 | if (nla_put_u8(skb, IFLA_BOND_MODE, bond->params.mode)) |
90af2311 | 283 | goto nla_put_failure; |
eecdaa6e | 284 | |
285 | if (slave_dev && | |
286 | nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, slave_dev->ifindex)) | |
287 | goto nla_put_failure; | |
288 | ||
289 | if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon)) | |
290 | goto nla_put_failure; | |
291 | ||
25852e29 | 292 | if (nla_put_u32(skb, IFLA_BOND_UPDELAY, |
293 | bond->params.updelay * bond->params.miimon)) | |
294 | goto nla_put_failure; | |
295 | ||
c7461f9b | 296 | if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY, |
297 | bond->params.downdelay * bond->params.miimon)) | |
298 | goto nla_put_failure; | |
299 | ||
9f53e14e | 300 | if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier)) |
301 | goto nla_put_failure; | |
302 | ||
06151dbc | 303 | if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval)) |
304 | goto nla_put_failure; | |
305 | ||
7f28fa10 | 306 | targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET); |
307 | if (!targets) | |
308 | goto nla_put_failure; | |
309 | ||
310 | targets_added = 0; | |
311 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { | |
312 | if (bond->params.arp_targets[i]) { | |
e7ef941d | 313 | nla_put_be32(skb, i, bond->params.arp_targets[i]); |
7f28fa10 | 314 | targets_added = 1; |
315 | } | |
316 | } | |
317 | ||
318 | if (targets_added) | |
319 | nla_nest_end(skb, targets); | |
320 | else | |
321 | nla_nest_cancel(skb, targets); | |
322 | ||
29c49482 | 323 | if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate)) |
324 | goto nla_put_failure; | |
325 | ||
d5c84254 | 326 | if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS, |
327 | bond->params.arp_all_targets)) | |
328 | goto nla_put_failure; | |
329 | ||
0a98a0d1 | 330 | if (bond->primary_slave && |
331 | nla_put_u32(skb, IFLA_BOND_PRIMARY, | |
332 | bond->primary_slave->dev->ifindex)) | |
333 | goto nla_put_failure; | |
334 | ||
8a41ae44 | 335 | if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT, |
336 | bond->params.primary_reselect)) | |
337 | goto nla_put_failure; | |
338 | ||
89901972 | 339 | if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC, |
340 | bond->params.fail_over_mac)) | |
341 | goto nla_put_failure; | |
342 | ||
f70161c6 | 343 | if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY, |
344 | bond->params.xmit_policy)) | |
345 | goto nla_put_failure; | |
346 | ||
d8838de7 | 347 | if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP, |
348 | bond->params.resend_igmp)) | |
349 | goto nla_put_failure; | |
350 | ||
2c9839c1 | 351 | if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF, |
352 | bond->params.num_peer_notif)) | |
353 | goto nla_put_failure; | |
354 | ||
1cc0b1e3 | 355 | if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE, |
356 | bond->params.all_slaves_active)) | |
357 | goto nla_put_failure; | |
358 | ||
7d101008 | 359 | if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS, |
360 | bond->params.min_links)) | |
361 | goto nla_put_failure; | |
362 | ||
90af2311 JP |
363 | return 0; |
364 | ||
365 | nla_put_failure: | |
366 | return -EMSGSIZE; | |
367 | } | |
368 | ||
0a2a78c4 JP |
369 | struct rtnl_link_ops bond_link_ops __read_mostly = { |
370 | .kind = "bond", | |
371 | .priv_size = sizeof(struct bonding), | |
372 | .setup = bond_setup, | |
90af2311 JP |
373 | .maxtype = IFLA_BOND_MAX, |
374 | .policy = bond_policy, | |
0a2a78c4 | 375 | .validate = bond_validate, |
90af2311 JP |
376 | .newlink = bond_newlink, |
377 | .changelink = bond_changelink, | |
378 | .get_size = bond_get_size, | |
379 | .fill_info = bond_fill_info, | |
0a2a78c4 JP |
380 | .get_num_tx_queues = bond_get_num_tx_queues, |
381 | .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number | |
382 | as for TX queues */ | |
383 | }; | |
384 | ||
385 | int __init bond_netlink_init(void) | |
386 | { | |
387 | return rtnl_link_register(&bond_link_ops); | |
388 | } | |
389 | ||
a729e83a | 390 | void bond_netlink_fini(void) |
0a2a78c4 JP |
391 | { |
392 | rtnl_link_unregister(&bond_link_ops); | |
393 | } | |
394 | ||
395 | MODULE_ALIAS_RTNL_LINK("bond"); |