]>
Commit | Line | Data |
---|---|---|
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 }, |
90af2311 JP |
37 | }; |
38 | ||
0a2a78c4 JP |
39 | static int bond_validate(struct nlattr *tb[], struct nlattr *data[]) |
40 | { | |
41 | if (tb[IFLA_ADDRESS]) { | |
42 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
43 | return -EINVAL; | |
44 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
45 | return -EADDRNOTAVAIL; | |
46 | } | |
47 | return 0; | |
48 | } | |
49 | ||
90af2311 JP |
50 | static int bond_changelink(struct net_device *bond_dev, |
51 | struct nlattr *tb[], struct nlattr *data[]) | |
52 | { | |
53 | struct bonding *bond = netdev_priv(bond_dev); | |
06151dbc | 54 | int miimon = 0; |
90af2311 JP |
55 | int err; |
56 | ||
eecdaa6e | 57 | if (!data) |
58 | return 0; | |
59 | ||
60 | if (data[IFLA_BOND_MODE]) { | |
90af2311 JP |
61 | int mode = nla_get_u8(data[IFLA_BOND_MODE]); |
62 | ||
63 | err = bond_option_mode_set(bond, mode); | |
64 | if (err) | |
65 | return err; | |
66 | } | |
eecdaa6e | 67 | if (data[IFLA_BOND_ACTIVE_SLAVE]) { |
ec76aa49 JP |
68 | int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]); |
69 | struct net_device *slave_dev; | |
70 | ||
71 | if (ifindex == 0) { | |
72 | slave_dev = NULL; | |
73 | } else { | |
74 | slave_dev = __dev_get_by_index(dev_net(bond_dev), | |
75 | ifindex); | |
76 | if (!slave_dev) | |
77 | return -ENODEV; | |
78 | } | |
79 | err = bond_option_active_slave_set(bond, slave_dev); | |
80 | if (err) | |
81 | return err; | |
82 | } | |
eecdaa6e | 83 | if (data[IFLA_BOND_MIIMON]) { |
06151dbc | 84 | miimon = nla_get_u32(data[IFLA_BOND_MIIMON]); |
eecdaa6e | 85 | |
86 | err = bond_option_miimon_set(bond, miimon); | |
87 | if (err) | |
88 | return err; | |
89 | } | |
25852e29 | 90 | if (data[IFLA_BOND_UPDELAY]) { |
91 | int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]); | |
92 | ||
93 | err = bond_option_updelay_set(bond, updelay); | |
94 | if (err) | |
95 | return err; | |
96 | } | |
c7461f9b | 97 | if (data[IFLA_BOND_DOWNDELAY]) { |
98 | int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]); | |
99 | ||
100 | err = bond_option_downdelay_set(bond, downdelay); | |
101 | if (err) | |
102 | return err; | |
103 | } | |
9f53e14e | 104 | if (data[IFLA_BOND_USE_CARRIER]) { |
105 | int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]); | |
106 | ||
107 | err = bond_option_use_carrier_set(bond, use_carrier); | |
108 | if (err) | |
109 | return err; | |
110 | } | |
06151dbc | 111 | if (data[IFLA_BOND_ARP_INTERVAL]) { |
112 | int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]); | |
113 | ||
114 | if (arp_interval && miimon) { | |
115 | pr_err("%s: ARP monitoring cannot be used with MII monitoring.\n", | |
116 | bond->dev->name); | |
117 | return -EINVAL; | |
118 | } | |
119 | ||
120 | err = bond_option_arp_interval_set(bond, arp_interval); | |
121 | if (err) | |
122 | return err; | |
123 | } | |
7f28fa10 | 124 | if (data[IFLA_BOND_ARP_IP_TARGET]) { |
125 | __be32 targets[BOND_MAX_ARP_TARGETS] = { 0, }; | |
126 | struct nlattr *attr; | |
127 | int i = 0, rem; | |
128 | ||
129 | nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) { | |
e7ef941d | 130 | __be32 target = nla_get_be32(attr); |
7f28fa10 | 131 | targets[i++] = target; |
132 | } | |
133 | ||
134 | err = bond_option_arp_ip_targets_set(bond, targets, i); | |
135 | if (err) | |
136 | return err; | |
137 | } | |
29c49482 | 138 | if (data[IFLA_BOND_ARP_VALIDATE]) { |
139 | int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]); | |
140 | ||
141 | if (arp_validate && miimon) { | |
142 | pr_err("%s: ARP validating cannot be used with MII monitoring.\n", | |
143 | bond->dev->name); | |
144 | return -EINVAL; | |
145 | } | |
146 | ||
147 | err = bond_option_arp_validate_set(bond, arp_validate); | |
148 | if (err) | |
149 | return err; | |
150 | } | |
d5c84254 | 151 | if (data[IFLA_BOND_ARP_ALL_TARGETS]) { |
152 | int arp_all_targets = | |
153 | nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]); | |
154 | ||
155 | err = bond_option_arp_all_targets_set(bond, arp_all_targets); | |
156 | if (err) | |
157 | return err; | |
158 | } | |
0a98a0d1 | 159 | if (data[IFLA_BOND_PRIMARY]) { |
160 | int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]); | |
161 | struct net_device *dev; | |
162 | char *primary = ""; | |
163 | ||
164 | dev = __dev_get_by_index(dev_net(bond_dev), ifindex); | |
165 | if (dev) | |
166 | primary = dev->name; | |
167 | ||
168 | err = bond_option_primary_set(bond, primary); | |
169 | if (err) | |
170 | return err; | |
171 | } | |
8a41ae44 | 172 | if (data[IFLA_BOND_PRIMARY_RESELECT]) { |
173 | int primary_reselect = | |
174 | nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]); | |
175 | ||
176 | err = bond_option_primary_reselect_set(bond, primary_reselect); | |
177 | if (err) | |
178 | return err; | |
179 | } | |
90af2311 JP |
180 | return 0; |
181 | } | |
182 | ||
183 | static int bond_newlink(struct net *src_net, struct net_device *bond_dev, | |
184 | struct nlattr *tb[], struct nlattr *data[]) | |
185 | { | |
186 | int err; | |
187 | ||
188 | err = bond_changelink(bond_dev, tb, data); | |
189 | if (err < 0) | |
190 | return err; | |
191 | ||
192 | return register_netdevice(bond_dev); | |
193 | } | |
194 | ||
195 | static size_t bond_get_size(const struct net_device *bond_dev) | |
196 | { | |
e139862e | 197 | return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */ |
eecdaa6e | 198 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */ |
199 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */ | |
25852e29 | 200 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */ |
c7461f9b | 201 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */ |
9f53e14e | 202 | nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */ |
06151dbc | 203 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */ |
7f28fa10 | 204 | /* IFLA_BOND_ARP_IP_TARGET */ |
205 | nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS + | |
29c49482 | 206 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */ |
d5c84254 | 207 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */ |
0a98a0d1 | 208 | nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */ |
8a41ae44 | 209 | nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */ |
eecdaa6e | 210 | 0; |
90af2311 JP |
211 | } |
212 | ||
213 | static int bond_fill_info(struct sk_buff *skb, | |
214 | const struct net_device *bond_dev) | |
215 | { | |
216 | struct bonding *bond = netdev_priv(bond_dev); | |
ec76aa49 | 217 | struct net_device *slave_dev = bond_option_active_slave_get(bond); |
7f28fa10 | 218 | struct nlattr *targets; |
219 | int i, targets_added; | |
90af2311 | 220 | |
eecdaa6e | 221 | if (nla_put_u8(skb, IFLA_BOND_MODE, bond->params.mode)) |
90af2311 | 222 | goto nla_put_failure; |
eecdaa6e | 223 | |
224 | if (slave_dev && | |
225 | nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, slave_dev->ifindex)) | |
226 | goto nla_put_failure; | |
227 | ||
228 | if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon)) | |
229 | goto nla_put_failure; | |
230 | ||
25852e29 | 231 | if (nla_put_u32(skb, IFLA_BOND_UPDELAY, |
232 | bond->params.updelay * bond->params.miimon)) | |
233 | goto nla_put_failure; | |
234 | ||
c7461f9b | 235 | if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY, |
236 | bond->params.downdelay * bond->params.miimon)) | |
237 | goto nla_put_failure; | |
238 | ||
9f53e14e | 239 | if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier)) |
240 | goto nla_put_failure; | |
241 | ||
06151dbc | 242 | if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval)) |
243 | goto nla_put_failure; | |
244 | ||
7f28fa10 | 245 | targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET); |
246 | if (!targets) | |
247 | goto nla_put_failure; | |
248 | ||
249 | targets_added = 0; | |
250 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { | |
251 | if (bond->params.arp_targets[i]) { | |
e7ef941d | 252 | nla_put_be32(skb, i, bond->params.arp_targets[i]); |
7f28fa10 | 253 | targets_added = 1; |
254 | } | |
255 | } | |
256 | ||
257 | if (targets_added) | |
258 | nla_nest_end(skb, targets); | |
259 | else | |
260 | nla_nest_cancel(skb, targets); | |
261 | ||
29c49482 | 262 | if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate)) |
263 | goto nla_put_failure; | |
264 | ||
d5c84254 | 265 | if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS, |
266 | bond->params.arp_all_targets)) | |
267 | goto nla_put_failure; | |
268 | ||
0a98a0d1 | 269 | if (bond->primary_slave && |
270 | nla_put_u32(skb, IFLA_BOND_PRIMARY, | |
271 | bond->primary_slave->dev->ifindex)) | |
272 | goto nla_put_failure; | |
273 | ||
8a41ae44 | 274 | if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT, |
275 | bond->params.primary_reselect)) | |
276 | goto nla_put_failure; | |
277 | ||
90af2311 JP |
278 | return 0; |
279 | ||
280 | nla_put_failure: | |
281 | return -EMSGSIZE; | |
282 | } | |
283 | ||
0a2a78c4 JP |
284 | struct rtnl_link_ops bond_link_ops __read_mostly = { |
285 | .kind = "bond", | |
286 | .priv_size = sizeof(struct bonding), | |
287 | .setup = bond_setup, | |
90af2311 JP |
288 | .maxtype = IFLA_BOND_MAX, |
289 | .policy = bond_policy, | |
0a2a78c4 | 290 | .validate = bond_validate, |
90af2311 JP |
291 | .newlink = bond_newlink, |
292 | .changelink = bond_changelink, | |
293 | .get_size = bond_get_size, | |
294 | .fill_info = bond_fill_info, | |
0a2a78c4 JP |
295 | .get_num_tx_queues = bond_get_num_tx_queues, |
296 | .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number | |
297 | as for TX queues */ | |
298 | }; | |
299 | ||
300 | int __init bond_netlink_init(void) | |
301 | { | |
302 | return rtnl_link_register(&bond_link_ops); | |
303 | } | |
304 | ||
a729e83a | 305 | void bond_netlink_fini(void) |
0a2a78c4 JP |
306 | { |
307 | rtnl_link_unregister(&bond_link_ops); | |
308 | } | |
309 | ||
310 | MODULE_ALIAS_RTNL_LINK("bond"); |