Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * INET An implementation of the TCP/IP protocol suite for the LINUX |
| 3 | * operating system. INET is implemented using the BSD Socket |
| 4 | * interface as the means of communication with the user level. |
| 5 | * |
| 6 | * Routing netlink socket interface: protocol independent part. |
| 7 | * |
| 8 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU General Public License |
| 12 | * as published by the Free Software Foundation; either version |
| 13 | * 2 of the License, or (at your option) any later version. |
| 14 | * |
| 15 | * Fixes: |
| 16 | * Vitaly E. Lavrov RTA_OK arithmetics was wrong. |
| 17 | */ |
| 18 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <linux/errno.h> |
| 20 | #include <linux/module.h> |
| 21 | #include <linux/types.h> |
| 22 | #include <linux/socket.h> |
| 23 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/timer.h> |
| 25 | #include <linux/string.h> |
| 26 | #include <linux/sockios.h> |
| 27 | #include <linux/net.h> |
| 28 | #include <linux/fcntl.h> |
| 29 | #include <linux/mm.h> |
| 30 | #include <linux/slab.h> |
| 31 | #include <linux/interrupt.h> |
| 32 | #include <linux/capability.h> |
| 33 | #include <linux/skbuff.h> |
| 34 | #include <linux/init.h> |
| 35 | #include <linux/security.h> |
Stephen Hemminger | 6756ae4 | 2006-03-20 22:23:58 -0800 | [diff] [blame] | 36 | #include <linux/mutex.h> |
Thomas Graf | 1823730 | 2006-08-04 23:04:54 -0700 | [diff] [blame] | 37 | #include <linux/if_addr.h> |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 38 | #include <linux/if_bridge.h> |
Williams, Mitch A | ebc08a6 | 2010-02-10 01:44:05 +0000 | [diff] [blame] | 39 | #include <linux/pci.h> |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 40 | #include <linux/etherdevice.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
| 42 | #include <asm/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
| 44 | #include <linux/inet.h> |
| 45 | #include <linux/netdevice.h> |
| 46 | #include <net/ip.h> |
| 47 | #include <net/protocol.h> |
| 48 | #include <net/arp.h> |
| 49 | #include <net/route.h> |
| 50 | #include <net/udp.h> |
| 51 | #include <net/sock.h> |
| 52 | #include <net/pkt_sched.h> |
Thomas Graf | 14c0b97 | 2006-08-04 03:38:38 -0700 | [diff] [blame] | 53 | #include <net/fib_rules.h> |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 54 | #include <net/rtnetlink.h> |
Johannes Berg | 30ffee8 | 2009-07-10 09:51:35 +0000 | [diff] [blame] | 55 | #include <net/net_namespace.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 57 | struct rtnl_link { |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 58 | rtnl_doit_func doit; |
| 59 | rtnl_dumpit_func dumpit; |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 60 | rtnl_calcit_func calcit; |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 61 | }; |
| 62 | |
Stephen Hemminger | 6756ae4 | 2006-03-20 22:23:58 -0800 | [diff] [blame] | 63 | static DEFINE_MUTEX(rtnl_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
| 65 | void rtnl_lock(void) |
| 66 | { |
Stephen Hemminger | 6756ae4 | 2006-03-20 22:23:58 -0800 | [diff] [blame] | 67 | mutex_lock(&rtnl_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | } |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 69 | EXPORT_SYMBOL(rtnl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
Stephen Hemminger | 6756ae4 | 2006-03-20 22:23:58 -0800 | [diff] [blame] | 71 | void __rtnl_unlock(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | { |
Stephen Hemminger | 6756ae4 | 2006-03-20 22:23:58 -0800 | [diff] [blame] | 73 | mutex_unlock(&rtnl_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | } |
Stephen Hemminger | 6756ae4 | 2006-03-20 22:23:58 -0800 | [diff] [blame] | 75 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | void rtnl_unlock(void) |
| 77 | { |
Herbert Xu | 58ec3b4 | 2008-10-07 15:50:03 -0700 | [diff] [blame] | 78 | /* This fellow will unlock it for us. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | netdev_run_todo(); |
| 80 | } |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 81 | EXPORT_SYMBOL(rtnl_unlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
Stephen Hemminger | 6756ae4 | 2006-03-20 22:23:58 -0800 | [diff] [blame] | 83 | int rtnl_trylock(void) |
| 84 | { |
| 85 | return mutex_trylock(&rtnl_mutex); |
| 86 | } |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 87 | EXPORT_SYMBOL(rtnl_trylock); |
Stephen Hemminger | 6756ae4 | 2006-03-20 22:23:58 -0800 | [diff] [blame] | 88 | |
Patrick McHardy | c9c1014 | 2008-04-23 22:10:48 -0700 | [diff] [blame] | 89 | int rtnl_is_locked(void) |
| 90 | { |
| 91 | return mutex_is_locked(&rtnl_mutex); |
| 92 | } |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 93 | EXPORT_SYMBOL(rtnl_is_locked); |
Patrick McHardy | c9c1014 | 2008-04-23 22:10:48 -0700 | [diff] [blame] | 94 | |
Paul E. McKenney | a898def | 2010-02-22 17:04:49 -0800 | [diff] [blame] | 95 | #ifdef CONFIG_PROVE_LOCKING |
| 96 | int lockdep_rtnl_is_held(void) |
| 97 | { |
| 98 | return lockdep_is_held(&rtnl_mutex); |
| 99 | } |
| 100 | EXPORT_SYMBOL(lockdep_rtnl_is_held); |
| 101 | #endif /* #ifdef CONFIG_PROVE_LOCKING */ |
| 102 | |
Patrick McHardy | 25239ce | 2010-04-26 16:02:05 +0200 | [diff] [blame] | 103 | static struct rtnl_link *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1]; |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 104 | |
| 105 | static inline int rtm_msgindex(int msgtype) |
| 106 | { |
| 107 | int msgindex = msgtype - RTM_BASE; |
| 108 | |
| 109 | /* |
| 110 | * msgindex < 0 implies someone tried to register a netlink |
| 111 | * control code. msgindex >= RTM_NR_MSGTYPES may indicate that |
| 112 | * the message type has not been added to linux/rtnetlink.h |
| 113 | */ |
| 114 | BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES); |
| 115 | |
| 116 | return msgindex; |
| 117 | } |
| 118 | |
| 119 | static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex) |
| 120 | { |
| 121 | struct rtnl_link *tab; |
| 122 | |
Patrick McHardy | 25239ce | 2010-04-26 16:02:05 +0200 | [diff] [blame] | 123 | if (protocol <= RTNL_FAMILY_MAX) |
Patrick McHardy | 0f87b1d | 2010-04-13 05:03:17 +0000 | [diff] [blame] | 124 | tab = rtnl_msg_handlers[protocol]; |
| 125 | else |
| 126 | tab = NULL; |
| 127 | |
Thomas Graf | 51057f2 | 2007-03-22 21:41:06 -0700 | [diff] [blame] | 128 | if (tab == NULL || tab[msgindex].doit == NULL) |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 129 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
| 130 | |
Hans Zhang | c80bbea | 2012-10-22 22:21:23 +0000 | [diff] [blame] | 131 | return tab[msgindex].doit; |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 132 | } |
| 133 | |
| 134 | static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex) |
| 135 | { |
| 136 | struct rtnl_link *tab; |
| 137 | |
Patrick McHardy | 25239ce | 2010-04-26 16:02:05 +0200 | [diff] [blame] | 138 | if (protocol <= RTNL_FAMILY_MAX) |
Patrick McHardy | 0f87b1d | 2010-04-13 05:03:17 +0000 | [diff] [blame] | 139 | tab = rtnl_msg_handlers[protocol]; |
| 140 | else |
| 141 | tab = NULL; |
| 142 | |
Thomas Graf | 51057f2 | 2007-03-22 21:41:06 -0700 | [diff] [blame] | 143 | if (tab == NULL || tab[msgindex].dumpit == NULL) |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 144 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
| 145 | |
Hans Zhang | c80bbea | 2012-10-22 22:21:23 +0000 | [diff] [blame] | 146 | return tab[msgindex].dumpit; |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 147 | } |
| 148 | |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 149 | static rtnl_calcit_func rtnl_get_calcit(int protocol, int msgindex) |
| 150 | { |
| 151 | struct rtnl_link *tab; |
| 152 | |
| 153 | if (protocol <= RTNL_FAMILY_MAX) |
| 154 | tab = rtnl_msg_handlers[protocol]; |
| 155 | else |
| 156 | tab = NULL; |
| 157 | |
| 158 | if (tab == NULL || tab[msgindex].calcit == NULL) |
| 159 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
| 160 | |
Hans Zhang | c80bbea | 2012-10-22 22:21:23 +0000 | [diff] [blame] | 161 | return tab[msgindex].calcit; |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 162 | } |
| 163 | |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 164 | /** |
| 165 | * __rtnl_register - Register a rtnetlink message type |
| 166 | * @protocol: Protocol family or PF_UNSPEC |
| 167 | * @msgtype: rtnetlink message type |
| 168 | * @doit: Function pointer called for each request message |
| 169 | * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 170 | * @calcit: Function pointer to calc size of dump message |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 171 | * |
| 172 | * Registers the specified function pointers (at least one of them has |
| 173 | * to be non-NULL) to be called whenever a request message for the |
| 174 | * specified protocol family and message type is received. |
| 175 | * |
| 176 | * The special protocol family PF_UNSPEC may be used to define fallback |
| 177 | * function pointers for the case when no entry for the specific protocol |
| 178 | * family exists. |
| 179 | * |
| 180 | * Returns 0 on success or a negative error code. |
| 181 | */ |
| 182 | int __rtnl_register(int protocol, int msgtype, |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 183 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
| 184 | rtnl_calcit_func calcit) |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 185 | { |
| 186 | struct rtnl_link *tab; |
| 187 | int msgindex; |
| 188 | |
Patrick McHardy | 25239ce | 2010-04-26 16:02:05 +0200 | [diff] [blame] | 189 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 190 | msgindex = rtm_msgindex(msgtype); |
| 191 | |
| 192 | tab = rtnl_msg_handlers[protocol]; |
| 193 | if (tab == NULL) { |
| 194 | tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL); |
| 195 | if (tab == NULL) |
| 196 | return -ENOBUFS; |
| 197 | |
| 198 | rtnl_msg_handlers[protocol] = tab; |
| 199 | } |
| 200 | |
| 201 | if (doit) |
| 202 | tab[msgindex].doit = doit; |
| 203 | |
| 204 | if (dumpit) |
| 205 | tab[msgindex].dumpit = dumpit; |
| 206 | |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 207 | if (calcit) |
| 208 | tab[msgindex].calcit = calcit; |
| 209 | |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 210 | return 0; |
| 211 | } |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 212 | EXPORT_SYMBOL_GPL(__rtnl_register); |
| 213 | |
| 214 | /** |
| 215 | * rtnl_register - Register a rtnetlink message type |
| 216 | * |
| 217 | * Identical to __rtnl_register() but panics on failure. This is useful |
| 218 | * as failure of this function is very unlikely, it can only happen due |
| 219 | * to lack of memory when allocating the chain to store all message |
| 220 | * handlers for a protocol. Meant for use in init functions where lack |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 221 | * of memory implies no sense in continuing. |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 222 | */ |
| 223 | void rtnl_register(int protocol, int msgtype, |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 224 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
| 225 | rtnl_calcit_func calcit) |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 226 | { |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 227 | if (__rtnl_register(protocol, msgtype, doit, dumpit, calcit) < 0) |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 228 | panic("Unable to register rtnetlink message handler, " |
| 229 | "protocol = %d, message type = %d\n", |
| 230 | protocol, msgtype); |
| 231 | } |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 232 | EXPORT_SYMBOL_GPL(rtnl_register); |
| 233 | |
| 234 | /** |
| 235 | * rtnl_unregister - Unregister a rtnetlink message type |
| 236 | * @protocol: Protocol family or PF_UNSPEC |
| 237 | * @msgtype: rtnetlink message type |
| 238 | * |
| 239 | * Returns 0 on success or a negative error code. |
| 240 | */ |
| 241 | int rtnl_unregister(int protocol, int msgtype) |
| 242 | { |
| 243 | int msgindex; |
| 244 | |
Patrick McHardy | 25239ce | 2010-04-26 16:02:05 +0200 | [diff] [blame] | 245 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 246 | msgindex = rtm_msgindex(msgtype); |
| 247 | |
| 248 | if (rtnl_msg_handlers[protocol] == NULL) |
| 249 | return -ENOENT; |
| 250 | |
| 251 | rtnl_msg_handlers[protocol][msgindex].doit = NULL; |
| 252 | rtnl_msg_handlers[protocol][msgindex].dumpit = NULL; |
| 253 | |
| 254 | return 0; |
| 255 | } |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 256 | EXPORT_SYMBOL_GPL(rtnl_unregister); |
| 257 | |
| 258 | /** |
| 259 | * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol |
| 260 | * @protocol : Protocol family or PF_UNSPEC |
| 261 | * |
| 262 | * Identical to calling rtnl_unregster() for all registered message types |
| 263 | * of a certain protocol family. |
| 264 | */ |
| 265 | void rtnl_unregister_all(int protocol) |
| 266 | { |
Patrick McHardy | 25239ce | 2010-04-26 16:02:05 +0200 | [diff] [blame] | 267 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 268 | |
| 269 | kfree(rtnl_msg_handlers[protocol]); |
| 270 | rtnl_msg_handlers[protocol] = NULL; |
| 271 | } |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 272 | EXPORT_SYMBOL_GPL(rtnl_unregister_all); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 274 | static LIST_HEAD(link_ops); |
| 275 | |
Eric Dumazet | c63044f | 2011-12-13 11:38:00 +0000 | [diff] [blame] | 276 | static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind) |
| 277 | { |
| 278 | const struct rtnl_link_ops *ops; |
| 279 | |
| 280 | list_for_each_entry(ops, &link_ops, list) { |
| 281 | if (!strcmp(ops->kind, kind)) |
| 282 | return ops; |
| 283 | } |
| 284 | return NULL; |
| 285 | } |
| 286 | |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 287 | /** |
| 288 | * __rtnl_link_register - Register rtnl_link_ops with rtnetlink. |
| 289 | * @ops: struct rtnl_link_ops * to register |
| 290 | * |
| 291 | * The caller must hold the rtnl_mutex. This function should be used |
| 292 | * by drivers that create devices during module initialization. It |
| 293 | * must be called before registering the devices. |
| 294 | * |
| 295 | * Returns 0 on success or a negative error code. |
| 296 | */ |
| 297 | int __rtnl_link_register(struct rtnl_link_ops *ops) |
| 298 | { |
Eric Dumazet | c63044f | 2011-12-13 11:38:00 +0000 | [diff] [blame] | 299 | if (rtnl_link_ops_get(ops->kind)) |
| 300 | return -EEXIST; |
| 301 | |
Patrick McHardy | 2d85cba | 2007-07-11 19:42:13 -0700 | [diff] [blame] | 302 | if (!ops->dellink) |
Eric Dumazet | 23289a3 | 2009-10-27 07:06:36 +0000 | [diff] [blame] | 303 | ops->dellink = unregister_netdevice_queue; |
Patrick McHardy | 2d85cba | 2007-07-11 19:42:13 -0700 | [diff] [blame] | 304 | |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 305 | list_add_tail(&ops->list, &link_ops); |
| 306 | return 0; |
| 307 | } |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 308 | EXPORT_SYMBOL_GPL(__rtnl_link_register); |
| 309 | |
| 310 | /** |
| 311 | * rtnl_link_register - Register rtnl_link_ops with rtnetlink. |
| 312 | * @ops: struct rtnl_link_ops * to register |
| 313 | * |
| 314 | * Returns 0 on success or a negative error code. |
| 315 | */ |
| 316 | int rtnl_link_register(struct rtnl_link_ops *ops) |
| 317 | { |
| 318 | int err; |
| 319 | |
| 320 | rtnl_lock(); |
| 321 | err = __rtnl_link_register(ops); |
| 322 | rtnl_unlock(); |
| 323 | return err; |
| 324 | } |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 325 | EXPORT_SYMBOL_GPL(rtnl_link_register); |
| 326 | |
Pavel Emelyanov | 669f87b | 2008-04-16 00:46:52 -0700 | [diff] [blame] | 327 | static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops) |
| 328 | { |
| 329 | struct net_device *dev; |
Eric Dumazet | 23289a3 | 2009-10-27 07:06:36 +0000 | [diff] [blame] | 330 | LIST_HEAD(list_kill); |
| 331 | |
Pavel Emelyanov | 669f87b | 2008-04-16 00:46:52 -0700 | [diff] [blame] | 332 | for_each_netdev(net, dev) { |
Eric Dumazet | 23289a3 | 2009-10-27 07:06:36 +0000 | [diff] [blame] | 333 | if (dev->rtnl_link_ops == ops) |
| 334 | ops->dellink(dev, &list_kill); |
Pavel Emelyanov | 669f87b | 2008-04-16 00:46:52 -0700 | [diff] [blame] | 335 | } |
Eric Dumazet | 23289a3 | 2009-10-27 07:06:36 +0000 | [diff] [blame] | 336 | unregister_netdevice_many(&list_kill); |
Pavel Emelyanov | 669f87b | 2008-04-16 00:46:52 -0700 | [diff] [blame] | 337 | } |
| 338 | |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 339 | /** |
| 340 | * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. |
| 341 | * @ops: struct rtnl_link_ops * to unregister |
| 342 | * |
Patrick McHardy | 2d85cba | 2007-07-11 19:42:13 -0700 | [diff] [blame] | 343 | * The caller must hold the rtnl_mutex. |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 344 | */ |
| 345 | void __rtnl_link_unregister(struct rtnl_link_ops *ops) |
| 346 | { |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 347 | struct net *net; |
Patrick McHardy | 2d85cba | 2007-07-11 19:42:13 -0700 | [diff] [blame] | 348 | |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 349 | for_each_net(net) { |
Pavel Emelyanov | 669f87b | 2008-04-16 00:46:52 -0700 | [diff] [blame] | 350 | __rtnl_kill_links(net, ops); |
Patrick McHardy | 2d85cba | 2007-07-11 19:42:13 -0700 | [diff] [blame] | 351 | } |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 352 | list_del(&ops->list); |
| 353 | } |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 354 | EXPORT_SYMBOL_GPL(__rtnl_link_unregister); |
| 355 | |
| 356 | /** |
| 357 | * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. |
| 358 | * @ops: struct rtnl_link_ops * to unregister |
| 359 | */ |
| 360 | void rtnl_link_unregister(struct rtnl_link_ops *ops) |
| 361 | { |
| 362 | rtnl_lock(); |
| 363 | __rtnl_link_unregister(ops); |
| 364 | rtnl_unlock(); |
| 365 | } |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 366 | EXPORT_SYMBOL_GPL(rtnl_link_unregister); |
| 367 | |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 368 | static size_t rtnl_link_get_size(const struct net_device *dev) |
| 369 | { |
| 370 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; |
| 371 | size_t size; |
| 372 | |
| 373 | if (!ops) |
| 374 | return 0; |
| 375 | |
Thomas Graf | 369cf77 | 2010-11-11 15:47:59 +0000 | [diff] [blame] | 376 | size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */ |
| 377 | nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */ |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 378 | |
| 379 | if (ops->get_size) |
| 380 | /* IFLA_INFO_DATA + nested data */ |
Thomas Graf | 369cf77 | 2010-11-11 15:47:59 +0000 | [diff] [blame] | 381 | size += nla_total_size(sizeof(struct nlattr)) + |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 382 | ops->get_size(dev); |
| 383 | |
| 384 | if (ops->get_xstats_size) |
Thomas Graf | 369cf77 | 2010-11-11 15:47:59 +0000 | [diff] [blame] | 385 | /* IFLA_INFO_XSTATS */ |
| 386 | size += nla_total_size(ops->get_xstats_size(dev)); |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 387 | |
| 388 | return size; |
| 389 | } |
| 390 | |
Thomas Graf | f8ff182 | 2010-11-16 04:30:14 +0000 | [diff] [blame] | 391 | static LIST_HEAD(rtnl_af_ops); |
| 392 | |
| 393 | static const struct rtnl_af_ops *rtnl_af_lookup(const int family) |
| 394 | { |
| 395 | const struct rtnl_af_ops *ops; |
| 396 | |
| 397 | list_for_each_entry(ops, &rtnl_af_ops, list) { |
| 398 | if (ops->family == family) |
| 399 | return ops; |
| 400 | } |
| 401 | |
| 402 | return NULL; |
| 403 | } |
| 404 | |
| 405 | /** |
| 406 | * __rtnl_af_register - Register rtnl_af_ops with rtnetlink. |
| 407 | * @ops: struct rtnl_af_ops * to register |
| 408 | * |
| 409 | * The caller must hold the rtnl_mutex. |
| 410 | * |
| 411 | * Returns 0 on success or a negative error code. |
| 412 | */ |
| 413 | int __rtnl_af_register(struct rtnl_af_ops *ops) |
| 414 | { |
| 415 | list_add_tail(&ops->list, &rtnl_af_ops); |
| 416 | return 0; |
| 417 | } |
| 418 | EXPORT_SYMBOL_GPL(__rtnl_af_register); |
| 419 | |
| 420 | /** |
| 421 | * rtnl_af_register - Register rtnl_af_ops with rtnetlink. |
| 422 | * @ops: struct rtnl_af_ops * to register |
| 423 | * |
| 424 | * Returns 0 on success or a negative error code. |
| 425 | */ |
| 426 | int rtnl_af_register(struct rtnl_af_ops *ops) |
| 427 | { |
| 428 | int err; |
| 429 | |
| 430 | rtnl_lock(); |
| 431 | err = __rtnl_af_register(ops); |
| 432 | rtnl_unlock(); |
| 433 | return err; |
| 434 | } |
| 435 | EXPORT_SYMBOL_GPL(rtnl_af_register); |
| 436 | |
| 437 | /** |
| 438 | * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. |
| 439 | * @ops: struct rtnl_af_ops * to unregister |
| 440 | * |
| 441 | * The caller must hold the rtnl_mutex. |
| 442 | */ |
| 443 | void __rtnl_af_unregister(struct rtnl_af_ops *ops) |
| 444 | { |
| 445 | list_del(&ops->list); |
| 446 | } |
| 447 | EXPORT_SYMBOL_GPL(__rtnl_af_unregister); |
| 448 | |
| 449 | /** |
| 450 | * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. |
| 451 | * @ops: struct rtnl_af_ops * to unregister |
| 452 | */ |
| 453 | void rtnl_af_unregister(struct rtnl_af_ops *ops) |
| 454 | { |
| 455 | rtnl_lock(); |
| 456 | __rtnl_af_unregister(ops); |
| 457 | rtnl_unlock(); |
| 458 | } |
| 459 | EXPORT_SYMBOL_GPL(rtnl_af_unregister); |
| 460 | |
| 461 | static size_t rtnl_link_get_af_size(const struct net_device *dev) |
| 462 | { |
| 463 | struct rtnl_af_ops *af_ops; |
| 464 | size_t size; |
| 465 | |
| 466 | /* IFLA_AF_SPEC */ |
| 467 | size = nla_total_size(sizeof(struct nlattr)); |
| 468 | |
| 469 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { |
| 470 | if (af_ops->get_link_af_size) { |
| 471 | /* AF_* + nested data */ |
| 472 | size += nla_total_size(sizeof(struct nlattr)) + |
| 473 | af_ops->get_link_af_size(dev); |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | return size; |
| 478 | } |
| 479 | |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 480 | static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev) |
| 481 | { |
| 482 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; |
| 483 | struct nlattr *linkinfo, *data; |
| 484 | int err = -EMSGSIZE; |
| 485 | |
| 486 | linkinfo = nla_nest_start(skb, IFLA_LINKINFO); |
| 487 | if (linkinfo == NULL) |
| 488 | goto out; |
| 489 | |
| 490 | if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0) |
| 491 | goto err_cancel_link; |
| 492 | if (ops->fill_xstats) { |
| 493 | err = ops->fill_xstats(skb, dev); |
| 494 | if (err < 0) |
| 495 | goto err_cancel_link; |
| 496 | } |
| 497 | if (ops->fill_info) { |
| 498 | data = nla_nest_start(skb, IFLA_INFO_DATA); |
Wei Yongjun | fcca143 | 2013-03-27 03:22:45 +0000 | [diff] [blame] | 499 | if (data == NULL) { |
| 500 | err = -EMSGSIZE; |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 501 | goto err_cancel_link; |
Wei Yongjun | fcca143 | 2013-03-27 03:22:45 +0000 | [diff] [blame] | 502 | } |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 503 | err = ops->fill_info(skb, dev); |
| 504 | if (err < 0) |
| 505 | goto err_cancel_data; |
| 506 | nla_nest_end(skb, data); |
| 507 | } |
| 508 | |
| 509 | nla_nest_end(skb, linkinfo); |
| 510 | return 0; |
| 511 | |
| 512 | err_cancel_data: |
| 513 | nla_nest_cancel(skb, data); |
| 514 | err_cancel_link: |
| 515 | nla_nest_cancel(skb, linkinfo); |
| 516 | out: |
| 517 | return err; |
| 518 | } |
| 519 | |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 520 | int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | { |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 522 | struct sock *rtnl = net->rtnl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | int err = 0; |
| 524 | |
Patrick McHardy | ac6d439 | 2005-08-14 19:29:52 -0700 | [diff] [blame] | 525 | NETLINK_CB(skb).dst_group = group; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | if (echo) |
| 527 | atomic_inc(&skb->users); |
| 528 | netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL); |
| 529 | if (echo) |
| 530 | err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT); |
| 531 | return err; |
| 532 | } |
| 533 | |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 534 | int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid) |
Thomas Graf | 2942e90 | 2006-08-15 00:30:25 -0700 | [diff] [blame] | 535 | { |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 536 | struct sock *rtnl = net->rtnl; |
| 537 | |
Thomas Graf | 2942e90 | 2006-08-15 00:30:25 -0700 | [diff] [blame] | 538 | return nlmsg_unicast(rtnl, skb, pid); |
| 539 | } |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 540 | EXPORT_SYMBOL(rtnl_unicast); |
Thomas Graf | 2942e90 | 2006-08-15 00:30:25 -0700 | [diff] [blame] | 541 | |
Pablo Neira Ayuso | 1ce85fe | 2009-02-24 23:18:28 -0800 | [diff] [blame] | 542 | void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group, |
| 543 | struct nlmsghdr *nlh, gfp_t flags) |
Thomas Graf | 97676b6 | 2006-08-15 00:31:41 -0700 | [diff] [blame] | 544 | { |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 545 | struct sock *rtnl = net->rtnl; |
Thomas Graf | 97676b6 | 2006-08-15 00:31:41 -0700 | [diff] [blame] | 546 | int report = 0; |
| 547 | |
| 548 | if (nlh) |
| 549 | report = nlmsg_report(nlh); |
| 550 | |
Pablo Neira Ayuso | 1ce85fe | 2009-02-24 23:18:28 -0800 | [diff] [blame] | 551 | nlmsg_notify(rtnl, skb, pid, group, report, flags); |
Thomas Graf | 97676b6 | 2006-08-15 00:31:41 -0700 | [diff] [blame] | 552 | } |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 553 | EXPORT_SYMBOL(rtnl_notify); |
Thomas Graf | 97676b6 | 2006-08-15 00:31:41 -0700 | [diff] [blame] | 554 | |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 555 | void rtnl_set_sk_err(struct net *net, u32 group, int error) |
Thomas Graf | 97676b6 | 2006-08-15 00:31:41 -0700 | [diff] [blame] | 556 | { |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 557 | struct sock *rtnl = net->rtnl; |
| 558 | |
Thomas Graf | 97676b6 | 2006-08-15 00:31:41 -0700 | [diff] [blame] | 559 | netlink_set_err(rtnl, 0, group, error); |
| 560 | } |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 561 | EXPORT_SYMBOL(rtnl_set_sk_err); |
Thomas Graf | 97676b6 | 2006-08-15 00:31:41 -0700 | [diff] [blame] | 562 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) |
| 564 | { |
Thomas Graf | 2d7202b | 2006-08-22 00:01:27 -0700 | [diff] [blame] | 565 | struct nlattr *mx; |
| 566 | int i, valid = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | |
Thomas Graf | 2d7202b | 2006-08-22 00:01:27 -0700 | [diff] [blame] | 568 | mx = nla_nest_start(skb, RTA_METRICS); |
| 569 | if (mx == NULL) |
| 570 | return -ENOBUFS; |
| 571 | |
| 572 | for (i = 0; i < RTAX_MAX; i++) { |
| 573 | if (metrics[i]) { |
| 574 | valid++; |
David S. Miller | a657434 | 2012-04-01 20:12:00 -0400 | [diff] [blame] | 575 | if (nla_put_u32(skb, i+1, metrics[i])) |
| 576 | goto nla_put_failure; |
Thomas Graf | 2d7202b | 2006-08-22 00:01:27 -0700 | [diff] [blame] | 577 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | |
David S. Miller | a57d27f | 2006-08-22 22:20:14 -0700 | [diff] [blame] | 580 | if (!valid) { |
| 581 | nla_nest_cancel(skb, mx); |
| 582 | return 0; |
| 583 | } |
Thomas Graf | 2d7202b | 2006-08-22 00:01:27 -0700 | [diff] [blame] | 584 | |
| 585 | return nla_nest_end(skb, mx); |
| 586 | |
| 587 | nla_put_failure: |
Thomas Graf | bc3ed28 | 2008-06-03 16:36:54 -0700 | [diff] [blame] | 588 | nla_nest_cancel(skb, mx); |
| 589 | return -EMSGSIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | } |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 591 | EXPORT_SYMBOL(rtnetlink_put_metrics); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | |
Thomas Graf | e3703b3 | 2006-11-27 09:27:07 -0800 | [diff] [blame] | 593 | int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, |
David S. Miller | 87a5069 | 2012-07-10 05:06:14 -0700 | [diff] [blame] | 594 | long expires, u32 error) |
Thomas Graf | e3703b3 | 2006-11-27 09:27:07 -0800 | [diff] [blame] | 595 | { |
| 596 | struct rta_cacheinfo ci = { |
Eric Dumazet | a399a80 | 2012-08-08 21:13:53 +0000 | [diff] [blame] | 597 | .rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse), |
Thomas Graf | e3703b3 | 2006-11-27 09:27:07 -0800 | [diff] [blame] | 598 | .rta_used = dst->__use, |
| 599 | .rta_clntref = atomic_read(&(dst->__refcnt)), |
| 600 | .rta_error = error, |
| 601 | .rta_id = id, |
Thomas Graf | e3703b3 | 2006-11-27 09:27:07 -0800 | [diff] [blame] | 602 | }; |
| 603 | |
Li Wei | 8253947 | 2012-07-29 16:01:30 +0000 | [diff] [blame] | 604 | if (expires) { |
| 605 | unsigned long clock; |
Thomas Graf | e3703b3 | 2006-11-27 09:27:07 -0800 | [diff] [blame] | 606 | |
Li Wei | 8253947 | 2012-07-29 16:01:30 +0000 | [diff] [blame] | 607 | clock = jiffies_to_clock_t(abs(expires)); |
| 608 | clock = min_t(unsigned long, clock, INT_MAX); |
| 609 | ci.rta_expires = (expires > 0) ? clock : -clock; |
| 610 | } |
Thomas Graf | e3703b3 | 2006-11-27 09:27:07 -0800 | [diff] [blame] | 611 | return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); |
| 612 | } |
Thomas Graf | e3703b3 | 2006-11-27 09:27:07 -0800 | [diff] [blame] | 613 | EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | |
David S. Miller | 93b2d4a | 2008-02-17 18:35:07 -0800 | [diff] [blame] | 615 | static void set_operstate(struct net_device *dev, unsigned char transition) |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 616 | { |
| 617 | unsigned char operstate = dev->operstate; |
| 618 | |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 619 | switch (transition) { |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 620 | case IF_OPER_UP: |
| 621 | if ((operstate == IF_OPER_DORMANT || |
| 622 | operstate == IF_OPER_UNKNOWN) && |
| 623 | !netif_dormant(dev)) |
| 624 | operstate = IF_OPER_UP; |
| 625 | break; |
| 626 | |
| 627 | case IF_OPER_DORMANT: |
| 628 | if (operstate == IF_OPER_UP || |
| 629 | operstate == IF_OPER_UNKNOWN) |
| 630 | operstate = IF_OPER_DORMANT; |
| 631 | break; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 632 | } |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 633 | |
| 634 | if (dev->operstate != operstate) { |
| 635 | write_lock_bh(&dev_base_lock); |
| 636 | dev->operstate = operstate; |
| 637 | write_unlock_bh(&dev_base_lock); |
David S. Miller | 93b2d4a | 2008-02-17 18:35:07 -0800 | [diff] [blame] | 638 | netdev_state_change(dev); |
| 639 | } |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 640 | } |
| 641 | |
Jiri Benc | b1beb68 | 2012-07-27 02:58:22 +0000 | [diff] [blame] | 642 | static unsigned int rtnl_dev_get_flags(const struct net_device *dev) |
| 643 | { |
| 644 | return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) | |
| 645 | (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI)); |
| 646 | } |
| 647 | |
Patrick McHardy | 3729d50 | 2010-02-26 06:34:54 +0000 | [diff] [blame] | 648 | static unsigned int rtnl_dev_combine_flags(const struct net_device *dev, |
| 649 | const struct ifinfomsg *ifm) |
| 650 | { |
| 651 | unsigned int flags = ifm->ifi_flags; |
| 652 | |
| 653 | /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ |
| 654 | if (ifm->ifi_change) |
| 655 | flags = (flags & ifm->ifi_change) | |
Jiri Benc | b1beb68 | 2012-07-27 02:58:22 +0000 | [diff] [blame] | 656 | (rtnl_dev_get_flags(dev) & ~ifm->ifi_change); |
Patrick McHardy | 3729d50 | 2010-02-26 06:34:54 +0000 | [diff] [blame] | 657 | |
| 658 | return flags; |
| 659 | } |
| 660 | |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 661 | static void copy_rtnl_link_stats(struct rtnl_link_stats *a, |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 662 | const struct rtnl_link_stats64 *b) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | { |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 664 | a->rx_packets = b->rx_packets; |
| 665 | a->tx_packets = b->tx_packets; |
| 666 | a->rx_bytes = b->rx_bytes; |
| 667 | a->tx_bytes = b->tx_bytes; |
| 668 | a->rx_errors = b->rx_errors; |
| 669 | a->tx_errors = b->tx_errors; |
| 670 | a->rx_dropped = b->rx_dropped; |
| 671 | a->tx_dropped = b->tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 673 | a->multicast = b->multicast; |
| 674 | a->collisions = b->collisions; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 676 | a->rx_length_errors = b->rx_length_errors; |
| 677 | a->rx_over_errors = b->rx_over_errors; |
| 678 | a->rx_crc_errors = b->rx_crc_errors; |
| 679 | a->rx_frame_errors = b->rx_frame_errors; |
| 680 | a->rx_fifo_errors = b->rx_fifo_errors; |
| 681 | a->rx_missed_errors = b->rx_missed_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 683 | a->tx_aborted_errors = b->tx_aborted_errors; |
| 684 | a->tx_carrier_errors = b->tx_carrier_errors; |
| 685 | a->tx_fifo_errors = b->tx_fifo_errors; |
| 686 | a->tx_heartbeat_errors = b->tx_heartbeat_errors; |
| 687 | a->tx_window_errors = b->tx_window_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 689 | a->rx_compressed = b->rx_compressed; |
| 690 | a->tx_compressed = b->tx_compressed; |
Jan Engelhardt | 10708f3 | 2010-03-11 09:57:29 +0000 | [diff] [blame] | 691 | } |
| 692 | |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 693 | static void copy_rtnl_link_stats64(void *v, const struct rtnl_link_stats64 *b) |
Jan Engelhardt | 10708f3 | 2010-03-11 09:57:29 +0000 | [diff] [blame] | 694 | { |
Eric Dumazet | afdcba3 | 2010-08-23 07:14:36 +0000 | [diff] [blame] | 695 | memcpy(v, b, sizeof(*b)); |
Jan Engelhardt | 10708f3 | 2010-03-11 09:57:29 +0000 | [diff] [blame] | 696 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 698 | /* All VF info */ |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 699 | static inline int rtnl_vfinfo_size(const struct net_device *dev, |
| 700 | u32 ext_filter_mask) |
Williams, Mitch A | ebc08a6 | 2010-02-10 01:44:05 +0000 | [diff] [blame] | 701 | { |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 702 | if (dev->dev.parent && dev_is_pci(dev->dev.parent) && |
| 703 | (ext_filter_mask & RTEXT_FILTER_VF)) { |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 704 | int num_vfs = dev_num_vf(dev->dev.parent); |
Scott Feldman | 045de01 | 2010-05-28 03:42:43 -0700 | [diff] [blame] | 705 | size_t size = nla_total_size(sizeof(struct nlattr)); |
| 706 | size += nla_total_size(num_vfs * sizeof(struct nlattr)); |
| 707 | size += num_vfs * |
| 708 | (nla_total_size(sizeof(struct ifla_vf_mac)) + |
| 709 | nla_total_size(sizeof(struct ifla_vf_vlan)) + |
Greg Rose | 5f8444a | 2011-10-08 03:05:24 +0000 | [diff] [blame] | 710 | nla_total_size(sizeof(struct ifla_vf_tx_rate)) + |
| 711 | nla_total_size(sizeof(struct ifla_vf_spoofchk))); |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 712 | return size; |
| 713 | } else |
Williams, Mitch A | ebc08a6 | 2010-02-10 01:44:05 +0000 | [diff] [blame] | 714 | return 0; |
| 715 | } |
| 716 | |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 717 | static size_t rtnl_port_size(const struct net_device *dev) |
| 718 | { |
| 719 | size_t port_size = nla_total_size(4) /* PORT_VF */ |
| 720 | + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ |
| 721 | + nla_total_size(sizeof(struct ifla_port_vsi)) |
| 722 | /* PORT_VSI_TYPE */ |
| 723 | + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */ |
| 724 | + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */ |
| 725 | + nla_total_size(1) /* PROT_VDP_REQUEST */ |
| 726 | + nla_total_size(2); /* PORT_VDP_RESPONSE */ |
| 727 | size_t vf_ports_size = nla_total_size(sizeof(struct nlattr)); |
| 728 | size_t vf_port_size = nla_total_size(sizeof(struct nlattr)) |
| 729 | + port_size; |
| 730 | size_t port_self_size = nla_total_size(sizeof(struct nlattr)) |
| 731 | + port_size; |
| 732 | |
| 733 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) |
| 734 | return 0; |
| 735 | if (dev_num_vf(dev->dev.parent)) |
| 736 | return port_self_size + vf_ports_size + |
| 737 | vf_port_size * dev_num_vf(dev->dev.parent); |
| 738 | else |
| 739 | return port_self_size; |
| 740 | } |
| 741 | |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 742 | static noinline size_t if_nlmsg_size(const struct net_device *dev, |
| 743 | u32 ext_filter_mask) |
Thomas Graf | 339bf98 | 2006-11-10 14:10:15 -0800 | [diff] [blame] | 744 | { |
| 745 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) |
| 746 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 747 | + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */ |
Thomas Graf | 339bf98 | 2006-11-10 14:10:15 -0800 | [diff] [blame] | 748 | + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ |
| 749 | + nla_total_size(sizeof(struct rtnl_link_ifmap)) |
| 750 | + nla_total_size(sizeof(struct rtnl_link_stats)) |
Jan Engelhardt | adcfe19 | 2010-03-27 17:15:29 -0700 | [diff] [blame] | 751 | + nla_total_size(sizeof(struct rtnl_link_stats64)) |
Thomas Graf | 339bf98 | 2006-11-10 14:10:15 -0800 | [diff] [blame] | 752 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
| 753 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ |
| 754 | + nla_total_size(4) /* IFLA_TXQLEN */ |
| 755 | + nla_total_size(4) /* IFLA_WEIGHT */ |
| 756 | + nla_total_size(4) /* IFLA_MTU */ |
| 757 | + nla_total_size(4) /* IFLA_LINK */ |
| 758 | + nla_total_size(4) /* IFLA_MASTER */ |
Jiri Pirko | 9a57247 | 2012-12-27 23:49:39 +0000 | [diff] [blame] | 759 | + nla_total_size(1) /* IFLA_CARRIER */ |
Ben Greear | edbc0bb | 2012-03-29 12:51:30 +0000 | [diff] [blame] | 760 | + nla_total_size(4) /* IFLA_PROMISCUITY */ |
Jiri Pirko | 76ff5cc | 2012-07-20 02:28:48 +0000 | [diff] [blame] | 761 | + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */ |
| 762 | + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */ |
Thomas Graf | 339bf98 | 2006-11-10 14:10:15 -0800 | [diff] [blame] | 763 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 764 | + nla_total_size(1) /* IFLA_LINKMODE */ |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 765 | + nla_total_size(ext_filter_mask |
| 766 | & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ |
| 767 | + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 768 | + rtnl_port_size(dev) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
Thomas Graf | f8ff182 | 2010-11-16 04:30:14 +0000 | [diff] [blame] | 769 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
| 770 | + rtnl_link_get_af_size(dev); /* IFLA_AF_SPEC */ |
Thomas Graf | 339bf98 | 2006-11-10 14:10:15 -0800 | [diff] [blame] | 771 | } |
| 772 | |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 773 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
| 774 | { |
| 775 | struct nlattr *vf_ports; |
| 776 | struct nlattr *vf_port; |
| 777 | int vf; |
| 778 | int err; |
| 779 | |
| 780 | vf_ports = nla_nest_start(skb, IFLA_VF_PORTS); |
| 781 | if (!vf_ports) |
| 782 | return -EMSGSIZE; |
| 783 | |
| 784 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { |
| 785 | vf_port = nla_nest_start(skb, IFLA_VF_PORT); |
Scott Feldman | 8ca9418 | 2010-05-28 03:42:18 -0700 | [diff] [blame] | 786 | if (!vf_port) |
| 787 | goto nla_put_failure; |
David S. Miller | a657434 | 2012-04-01 20:12:00 -0400 | [diff] [blame] | 788 | if (nla_put_u32(skb, IFLA_PORT_VF, vf)) |
| 789 | goto nla_put_failure; |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 790 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); |
Scott Feldman | 8ca9418 | 2010-05-28 03:42:18 -0700 | [diff] [blame] | 791 | if (err == -EMSGSIZE) |
| 792 | goto nla_put_failure; |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 793 | if (err) { |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 794 | nla_nest_cancel(skb, vf_port); |
| 795 | continue; |
| 796 | } |
| 797 | nla_nest_end(skb, vf_port); |
| 798 | } |
| 799 | |
| 800 | nla_nest_end(skb, vf_ports); |
| 801 | |
| 802 | return 0; |
Scott Feldman | 8ca9418 | 2010-05-28 03:42:18 -0700 | [diff] [blame] | 803 | |
| 804 | nla_put_failure: |
| 805 | nla_nest_cancel(skb, vf_ports); |
| 806 | return -EMSGSIZE; |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 807 | } |
| 808 | |
| 809 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) |
| 810 | { |
| 811 | struct nlattr *port_self; |
| 812 | int err; |
| 813 | |
| 814 | port_self = nla_nest_start(skb, IFLA_PORT_SELF); |
| 815 | if (!port_self) |
| 816 | return -EMSGSIZE; |
| 817 | |
| 818 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); |
| 819 | if (err) { |
| 820 | nla_nest_cancel(skb, port_self); |
Scott Feldman | 8ca9418 | 2010-05-28 03:42:18 -0700 | [diff] [blame] | 821 | return (err == -EMSGSIZE) ? err : 0; |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 822 | } |
| 823 | |
| 824 | nla_nest_end(skb, port_self); |
| 825 | |
| 826 | return 0; |
| 827 | } |
| 828 | |
| 829 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev) |
| 830 | { |
| 831 | int err; |
| 832 | |
| 833 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) |
| 834 | return 0; |
| 835 | |
| 836 | err = rtnl_port_self_fill(skb, dev); |
| 837 | if (err) |
| 838 | return err; |
| 839 | |
| 840 | if (dev_num_vf(dev->dev.parent)) { |
| 841 | err = rtnl_vf_ports_fill(skb, dev); |
| 842 | if (err) |
| 843 | return err; |
| 844 | } |
| 845 | |
| 846 | return 0; |
| 847 | } |
| 848 | |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 849 | static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, |
Patrick McHardy | 575c3e2 | 2007-05-22 17:00:49 -0700 | [diff] [blame] | 850 | int type, u32 pid, u32 seq, u32 change, |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 851 | unsigned int flags, u32 ext_filter_mask) |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 852 | { |
| 853 | struct ifinfomsg *ifm; |
| 854 | struct nlmsghdr *nlh; |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 855 | struct rtnl_link_stats64 temp; |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 856 | const struct rtnl_link_stats64 *stats; |
Thomas Graf | f8ff182 | 2010-11-16 04:30:14 +0000 | [diff] [blame] | 857 | struct nlattr *attr, *af_spec; |
| 858 | struct rtnl_af_ops *af_ops; |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 859 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 860 | |
Eric Dumazet | 2907c35 | 2011-05-25 07:34:04 +0000 | [diff] [blame] | 861 | ASSERT_RTNL(); |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 862 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
| 863 | if (nlh == NULL) |
Patrick McHardy | 2693256 | 2007-01-31 23:16:40 -0800 | [diff] [blame] | 864 | return -EMSGSIZE; |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 865 | |
| 866 | ifm = nlmsg_data(nlh); |
| 867 | ifm->ifi_family = AF_UNSPEC; |
| 868 | ifm->__ifi_pad = 0; |
| 869 | ifm->ifi_type = dev->type; |
| 870 | ifm->ifi_index = dev->ifindex; |
| 871 | ifm->ifi_flags = dev_get_flags(dev); |
| 872 | ifm->ifi_change = change; |
| 873 | |
David S. Miller | a657434 | 2012-04-01 20:12:00 -0400 | [diff] [blame] | 874 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
| 875 | nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) || |
| 876 | nla_put_u8(skb, IFLA_OPERSTATE, |
| 877 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN) || |
| 878 | nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) || |
| 879 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || |
| 880 | nla_put_u32(skb, IFLA_GROUP, dev->group) || |
Ben Greear | edbc0bb | 2012-03-29 12:51:30 +0000 | [diff] [blame] | 881 | nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || |
Jiri Pirko | 76ff5cc | 2012-07-20 02:28:48 +0000 | [diff] [blame] | 882 | nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || |
Mark A. Greer | 1d69c2b | 2012-07-20 13:35:13 +0000 | [diff] [blame] | 883 | #ifdef CONFIG_RPS |
Jiri Pirko | 76ff5cc | 2012-07-20 02:28:48 +0000 | [diff] [blame] | 884 | nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || |
Mark A. Greer | 1d69c2b | 2012-07-20 13:35:13 +0000 | [diff] [blame] | 885 | #endif |
David S. Miller | a657434 | 2012-04-01 20:12:00 -0400 | [diff] [blame] | 886 | (dev->ifindex != dev->iflink && |
| 887 | nla_put_u32(skb, IFLA_LINK, dev->iflink)) || |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 888 | (upper_dev && |
| 889 | nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex)) || |
Jiri Pirko | 9a57247 | 2012-12-27 23:49:39 +0000 | [diff] [blame] | 890 | nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) || |
David S. Miller | a657434 | 2012-04-01 20:12:00 -0400 | [diff] [blame] | 891 | (dev->qdisc && |
| 892 | nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) || |
| 893 | (dev->ifalias && |
| 894 | nla_put_string(skb, IFLA_IFALIAS, dev->ifalias))) |
| 895 | goto nla_put_failure; |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 896 | |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 897 | if (1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | struct rtnl_link_ifmap map = { |
| 899 | .mem_start = dev->mem_start, |
| 900 | .mem_end = dev->mem_end, |
| 901 | .base_addr = dev->base_addr, |
| 902 | .irq = dev->irq, |
| 903 | .dma = dev->dma, |
| 904 | .port = dev->if_port, |
| 905 | }; |
David S. Miller | a657434 | 2012-04-01 20:12:00 -0400 | [diff] [blame] | 906 | if (nla_put(skb, IFLA_MAP, sizeof(map), &map)) |
| 907 | goto nla_put_failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | } |
| 909 | |
| 910 | if (dev->addr_len) { |
David S. Miller | a657434 | 2012-04-01 20:12:00 -0400 | [diff] [blame] | 911 | if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || |
| 912 | nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) |
| 913 | goto nla_put_failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | } |
| 915 | |
Pavel Emelyanov | 96e7408 | 2008-05-21 14:12:46 -0700 | [diff] [blame] | 916 | attr = nla_reserve(skb, IFLA_STATS, |
| 917 | sizeof(struct rtnl_link_stats)); |
| 918 | if (attr == NULL) |
| 919 | goto nla_put_failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 921 | stats = dev_get_stats(dev, &temp); |
Pavel Emelyanov | 96e7408 | 2008-05-21 14:12:46 -0700 | [diff] [blame] | 922 | copy_rtnl_link_stats(nla_data(attr), stats); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | |
Jan Engelhardt | 10708f3 | 2010-03-11 09:57:29 +0000 | [diff] [blame] | 924 | attr = nla_reserve(skb, IFLA_STATS64, |
| 925 | sizeof(struct rtnl_link_stats64)); |
| 926 | if (attr == NULL) |
| 927 | goto nla_put_failure; |
Jan Engelhardt | 10708f3 | 2010-03-11 09:57:29 +0000 | [diff] [blame] | 928 | copy_rtnl_link_stats64(nla_data(attr), stats); |
| 929 | |
David S. Miller | a657434 | 2012-04-01 20:12:00 -0400 | [diff] [blame] | 930 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) && |
| 931 | nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent))) |
| 932 | goto nla_put_failure; |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 933 | |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 934 | if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent |
| 935 | && (ext_filter_mask & RTEXT_FILTER_VF)) { |
Williams, Mitch A | ebc08a6 | 2010-02-10 01:44:05 +0000 | [diff] [blame] | 936 | int i; |
Williams, Mitch A | ebc08a6 | 2010-02-10 01:44:05 +0000 | [diff] [blame] | 937 | |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 938 | struct nlattr *vfinfo, *vf; |
| 939 | int num_vfs = dev_num_vf(dev->dev.parent); |
| 940 | |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 941 | vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST); |
| 942 | if (!vfinfo) |
| 943 | goto nla_put_failure; |
| 944 | for (i = 0; i < num_vfs; i++) { |
| 945 | struct ifla_vf_info ivi; |
| 946 | struct ifla_vf_mac vf_mac; |
| 947 | struct ifla_vf_vlan vf_vlan; |
| 948 | struct ifla_vf_tx_rate vf_tx_rate; |
Greg Rose | 5f8444a | 2011-10-08 03:05:24 +0000 | [diff] [blame] | 949 | struct ifla_vf_spoofchk vf_spoofchk; |
Rony Efraim | 1d8faf4 | 2013-06-13 13:19:10 +0300 | [diff] [blame] | 950 | struct ifla_vf_link_state vf_linkstate; |
Greg Rose | 5f8444a | 2011-10-08 03:05:24 +0000 | [diff] [blame] | 951 | |
| 952 | /* |
| 953 | * Not all SR-IOV capable drivers support the |
| 954 | * spoofcheck query. Preset to -1 so the user |
| 955 | * space tool can detect that the driver didn't |
| 956 | * report anything. |
| 957 | */ |
| 958 | ivi.spoofchk = -1; |
Mathias Krause | 84d73cd | 2013-03-09 05:52:20 +0000 | [diff] [blame] | 959 | memset(ivi.mac, 0, sizeof(ivi.mac)); |
Rony Efraim | 1d8faf4 | 2013-06-13 13:19:10 +0300 | [diff] [blame] | 960 | /* The default value for VF link state is "auto" |
| 961 | * IFLA_VF_LINK_STATE_AUTO which equals zero |
| 962 | */ |
| 963 | ivi.linkstate = 0; |
Williams, Mitch A | ebc08a6 | 2010-02-10 01:44:05 +0000 | [diff] [blame] | 964 | if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi)) |
| 965 | break; |
Greg Rose | 5f8444a | 2011-10-08 03:05:24 +0000 | [diff] [blame] | 966 | vf_mac.vf = |
| 967 | vf_vlan.vf = |
| 968 | vf_tx_rate.vf = |
Rony Efraim | 1d8faf4 | 2013-06-13 13:19:10 +0300 | [diff] [blame] | 969 | vf_spoofchk.vf = |
| 970 | vf_linkstate.vf = ivi.vf; |
Greg Rose | 5f8444a | 2011-10-08 03:05:24 +0000 | [diff] [blame] | 971 | |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 972 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); |
| 973 | vf_vlan.vlan = ivi.vlan; |
| 974 | vf_vlan.qos = ivi.qos; |
| 975 | vf_tx_rate.rate = ivi.tx_rate; |
Greg Rose | 5f8444a | 2011-10-08 03:05:24 +0000 | [diff] [blame] | 976 | vf_spoofchk.setting = ivi.spoofchk; |
Rony Efraim | 1d8faf4 | 2013-06-13 13:19:10 +0300 | [diff] [blame] | 977 | vf_linkstate.link_state = ivi.linkstate; |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 978 | vf = nla_nest_start(skb, IFLA_VF_INFO); |
| 979 | if (!vf) { |
| 980 | nla_nest_cancel(skb, vfinfo); |
| 981 | goto nla_put_failure; |
| 982 | } |
David S. Miller | a657434 | 2012-04-01 20:12:00 -0400 | [diff] [blame] | 983 | if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || |
| 984 | nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || |
| 985 | nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), |
| 986 | &vf_tx_rate) || |
| 987 | nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), |
Rony Efraim | 1d8faf4 | 2013-06-13 13:19:10 +0300 | [diff] [blame] | 988 | &vf_spoofchk) || |
| 989 | nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate), |
| 990 | &vf_linkstate)) |
David S. Miller | a657434 | 2012-04-01 20:12:00 -0400 | [diff] [blame] | 991 | goto nla_put_failure; |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 992 | nla_nest_end(skb, vf); |
Williams, Mitch A | ebc08a6 | 2010-02-10 01:44:05 +0000 | [diff] [blame] | 993 | } |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 994 | nla_nest_end(skb, vfinfo); |
Williams, Mitch A | ebc08a6 | 2010-02-10 01:44:05 +0000 | [diff] [blame] | 995 | } |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 996 | |
| 997 | if (rtnl_port_fill(skb, dev)) |
| 998 | goto nla_put_failure; |
| 999 | |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1000 | if (dev->rtnl_link_ops) { |
| 1001 | if (rtnl_link_fill(skb, dev) < 0) |
| 1002 | goto nla_put_failure; |
| 1003 | } |
| 1004 | |
Thomas Graf | f8ff182 | 2010-11-16 04:30:14 +0000 | [diff] [blame] | 1005 | if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC))) |
| 1006 | goto nla_put_failure; |
| 1007 | |
| 1008 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { |
| 1009 | if (af_ops->fill_link_af) { |
| 1010 | struct nlattr *af; |
| 1011 | int err; |
| 1012 | |
| 1013 | if (!(af = nla_nest_start(skb, af_ops->family))) |
| 1014 | goto nla_put_failure; |
| 1015 | |
| 1016 | err = af_ops->fill_link_af(skb, dev); |
| 1017 | |
| 1018 | /* |
| 1019 | * Caller may return ENODATA to indicate that there |
| 1020 | * was no data to be dumped. This is not an error, it |
| 1021 | * means we should trim the attribute header and |
| 1022 | * continue. |
| 1023 | */ |
| 1024 | if (err == -ENODATA) |
| 1025 | nla_nest_cancel(skb, af); |
| 1026 | else if (err < 0) |
| 1027 | goto nla_put_failure; |
| 1028 | |
| 1029 | nla_nest_end(skb, af); |
| 1030 | } |
| 1031 | } |
| 1032 | |
| 1033 | nla_nest_end(skb, af_spec); |
| 1034 | |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 1035 | return nlmsg_end(skb, nlh); |
| 1036 | |
| 1037 | nla_put_failure: |
Patrick McHardy | 2693256 | 2007-01-31 23:16:40 -0800 | [diff] [blame] | 1038 | nlmsg_cancel(skb, nlh); |
| 1039 | return -EMSGSIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | } |
| 1041 | |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 1042 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | { |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 1044 | struct net *net = sock_net(skb->sk); |
Eric Dumazet | 7c28bd0 | 2009-10-24 06:13:17 -0700 | [diff] [blame] | 1045 | int h, s_h; |
| 1046 | int idx = 0, s_idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | struct net_device *dev; |
Eric Dumazet | 7c28bd0 | 2009-10-24 06:13:17 -0700 | [diff] [blame] | 1048 | struct hlist_head *head; |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1049 | struct nlattr *tb[IFLA_MAX+1]; |
| 1050 | u32 ext_filter_mask = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | |
Eric Dumazet | 7c28bd0 | 2009-10-24 06:13:17 -0700 | [diff] [blame] | 1052 | s_h = cb->args[0]; |
| 1053 | s_idx = cb->args[1]; |
| 1054 | |
Eric Dumazet | e67f88d | 2011-04-27 22:56:07 +0000 | [diff] [blame] | 1055 | rcu_read_lock(); |
Thomas Graf | 4e985ad | 2011-06-21 03:11:20 +0000 | [diff] [blame] | 1056 | cb->seq = net->dev_base_seq; |
| 1057 | |
Michael Riesch | 88c5b5c | 2013-04-08 05:45:26 +0000 | [diff] [blame] | 1058 | if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, |
Eric Dumazet | a4b64fb | 2012-03-04 12:32:10 +0000 | [diff] [blame] | 1059 | ifla_policy) >= 0) { |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1060 | |
Eric Dumazet | a4b64fb | 2012-03-04 12:32:10 +0000 | [diff] [blame] | 1061 | if (tb[IFLA_EXT_MASK]) |
| 1062 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); |
| 1063 | } |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1064 | |
Eric Dumazet | 7c28bd0 | 2009-10-24 06:13:17 -0700 | [diff] [blame] | 1065 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { |
| 1066 | idx = 0; |
| 1067 | head = &net->dev_index_head[h]; |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 1068 | hlist_for_each_entry_rcu(dev, head, index_hlist) { |
Eric Dumazet | 7c28bd0 | 2009-10-24 06:13:17 -0700 | [diff] [blame] | 1069 | if (idx < s_idx) |
| 1070 | goto cont; |
| 1071 | if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1072 | NETLINK_CB(cb->skb).portid, |
Eric Dumazet | 7c28bd0 | 2009-10-24 06:13:17 -0700 | [diff] [blame] | 1073 | cb->nlh->nlmsg_seq, 0, |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1074 | NLM_F_MULTI, |
| 1075 | ext_filter_mask) <= 0) |
Eric Dumazet | 7c28bd0 | 2009-10-24 06:13:17 -0700 | [diff] [blame] | 1076 | goto out; |
Thomas Graf | 4e985ad | 2011-06-21 03:11:20 +0000 | [diff] [blame] | 1077 | |
| 1078 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 1079 | cont: |
Eric Dumazet | 7c28bd0 | 2009-10-24 06:13:17 -0700 | [diff] [blame] | 1080 | idx++; |
| 1081 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | } |
Eric Dumazet | 7c28bd0 | 2009-10-24 06:13:17 -0700 | [diff] [blame] | 1083 | out: |
Eric Dumazet | e67f88d | 2011-04-27 22:56:07 +0000 | [diff] [blame] | 1084 | rcu_read_unlock(); |
Eric Dumazet | 7c28bd0 | 2009-10-24 06:13:17 -0700 | [diff] [blame] | 1085 | cb->args[1] = idx; |
| 1086 | cb->args[0] = h; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | |
| 1088 | return skb->len; |
| 1089 | } |
| 1090 | |
Pavel Emelianov | e719928 | 2007-08-08 22:16:38 -0700 | [diff] [blame] | 1091 | const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
Thomas Graf | 5176f91 | 2006-08-26 20:13:18 -0700 | [diff] [blame] | 1092 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1093 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
| 1094 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
Thomas Graf | 5176f91 | 2006-08-26 20:13:18 -0700 | [diff] [blame] | 1095 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
Thomas Graf | da5e049 | 2006-08-10 21:17:37 -0700 | [diff] [blame] | 1096 | [IFLA_MTU] = { .type = NLA_U32 }, |
Thomas Graf | 76e8730 | 2008-02-19 16:12:08 -0800 | [diff] [blame] | 1097 | [IFLA_LINK] = { .type = NLA_U32 }, |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 1098 | [IFLA_MASTER] = { .type = NLA_U32 }, |
Jiri Pirko | 9a57247 | 2012-12-27 23:49:39 +0000 | [diff] [blame] | 1099 | [IFLA_CARRIER] = { .type = NLA_U8 }, |
Thomas Graf | da5e049 | 2006-08-10 21:17:37 -0700 | [diff] [blame] | 1100 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
| 1101 | [IFLA_WEIGHT] = { .type = NLA_U32 }, |
| 1102 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, |
| 1103 | [IFLA_LINKMODE] = { .type = NLA_U8 }, |
Thomas Graf | 76e8730 | 2008-02-19 16:12:08 -0800 | [diff] [blame] | 1104 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
Eric W. Biederman | d8a5ec6 | 2007-09-12 13:57:04 +0200 | [diff] [blame] | 1105 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
Eric W. Biederman | f063052 | 2011-05-04 17:51:50 -0700 | [diff] [blame] | 1106 | [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 1107 | [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 }, |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 1108 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 1109 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
| 1110 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, |
Thomas Graf | f8ff182 | 2010-11-16 04:30:14 +0000 | [diff] [blame] | 1111 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1112 | [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
Ben Greear | edbc0bb | 2012-03-29 12:51:30 +0000 | [diff] [blame] | 1113 | [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
Jiri Pirko | 76ff5cc | 2012-07-20 02:28:48 +0000 | [diff] [blame] | 1114 | [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
| 1115 | [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, |
Thomas Graf | da5e049 | 2006-08-10 21:17:37 -0700 | [diff] [blame] | 1116 | }; |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 1117 | EXPORT_SYMBOL(ifla_policy); |
Thomas Graf | da5e049 | 2006-08-10 21:17:37 -0700 | [diff] [blame] | 1118 | |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1119 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
| 1120 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, |
| 1121 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, |
| 1122 | }; |
| 1123 | |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 1124 | static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = { |
| 1125 | [IFLA_VF_INFO] = { .type = NLA_NESTED }, |
| 1126 | }; |
| 1127 | |
| 1128 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { |
| 1129 | [IFLA_VF_MAC] = { .type = NLA_BINARY, |
| 1130 | .len = sizeof(struct ifla_vf_mac) }, |
| 1131 | [IFLA_VF_VLAN] = { .type = NLA_BINARY, |
| 1132 | .len = sizeof(struct ifla_vf_vlan) }, |
| 1133 | [IFLA_VF_TX_RATE] = { .type = NLA_BINARY, |
| 1134 | .len = sizeof(struct ifla_vf_tx_rate) }, |
Greg Rose | 48752f6 | 2012-02-08 00:45:00 +0000 | [diff] [blame] | 1135 | [IFLA_VF_SPOOFCHK] = { .type = NLA_BINARY, |
| 1136 | .len = sizeof(struct ifla_vf_spoofchk) }, |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 1137 | }; |
| 1138 | |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 1139 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
| 1140 | [IFLA_PORT_VF] = { .type = NLA_U32 }, |
| 1141 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, |
| 1142 | .len = PORT_PROFILE_MAX }, |
| 1143 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, |
| 1144 | .len = sizeof(struct ifla_port_vsi)}, |
| 1145 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, |
| 1146 | .len = PORT_UUID_MAX }, |
| 1147 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, |
| 1148 | .len = PORT_UUID_MAX }, |
| 1149 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, |
| 1150 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, |
| 1151 | }; |
| 1152 | |
Eric W. Biederman | 81adee4 | 2009-11-08 00:53:51 -0800 | [diff] [blame] | 1153 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
| 1154 | { |
| 1155 | struct net *net; |
| 1156 | /* Examine the link attributes and figure out which |
| 1157 | * network namespace we are talking about. |
| 1158 | */ |
| 1159 | if (tb[IFLA_NET_NS_PID]) |
| 1160 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); |
Eric W. Biederman | f063052 | 2011-05-04 17:51:50 -0700 | [diff] [blame] | 1161 | else if (tb[IFLA_NET_NS_FD]) |
| 1162 | net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); |
Eric W. Biederman | 81adee4 | 2009-11-08 00:53:51 -0800 | [diff] [blame] | 1163 | else |
| 1164 | net = get_net(src_net); |
| 1165 | return net; |
| 1166 | } |
| 1167 | EXPORT_SYMBOL(rtnl_link_get_net); |
| 1168 | |
Thomas Graf | 1840bb1 | 2008-02-23 19:54:36 -0800 | [diff] [blame] | 1169 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[]) |
| 1170 | { |
| 1171 | if (dev) { |
| 1172 | if (tb[IFLA_ADDRESS] && |
| 1173 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) |
| 1174 | return -EINVAL; |
| 1175 | |
| 1176 | if (tb[IFLA_BROADCAST] && |
| 1177 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) |
| 1178 | return -EINVAL; |
| 1179 | } |
| 1180 | |
Thomas Graf | cf7afbf | 2010-11-22 01:31:54 +0000 | [diff] [blame] | 1181 | if (tb[IFLA_AF_SPEC]) { |
| 1182 | struct nlattr *af; |
| 1183 | int rem, err; |
| 1184 | |
| 1185 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { |
| 1186 | const struct rtnl_af_ops *af_ops; |
| 1187 | |
| 1188 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) |
| 1189 | return -EAFNOSUPPORT; |
| 1190 | |
| 1191 | if (!af_ops->set_link_af) |
| 1192 | return -EOPNOTSUPP; |
| 1193 | |
| 1194 | if (af_ops->validate_link_af) { |
Kurt Van Dijck | 6d3a9a6 | 2011-01-26 04:55:24 +0000 | [diff] [blame] | 1195 | err = af_ops->validate_link_af(dev, af); |
Thomas Graf | cf7afbf | 2010-11-22 01:31:54 +0000 | [diff] [blame] | 1196 | if (err < 0) |
| 1197 | return err; |
| 1198 | } |
| 1199 | } |
| 1200 | } |
| 1201 | |
Thomas Graf | 1840bb1 | 2008-02-23 19:54:36 -0800 | [diff] [blame] | 1202 | return 0; |
| 1203 | } |
| 1204 | |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 1205 | static int do_setvfinfo(struct net_device *dev, struct nlattr *attr) |
| 1206 | { |
| 1207 | int rem, err = -EINVAL; |
| 1208 | struct nlattr *vf; |
| 1209 | const struct net_device_ops *ops = dev->netdev_ops; |
| 1210 | |
| 1211 | nla_for_each_nested(vf, attr, rem) { |
| 1212 | switch (nla_type(vf)) { |
| 1213 | case IFLA_VF_MAC: { |
| 1214 | struct ifla_vf_mac *ivm; |
| 1215 | ivm = nla_data(vf); |
| 1216 | err = -EOPNOTSUPP; |
| 1217 | if (ops->ndo_set_vf_mac) |
| 1218 | err = ops->ndo_set_vf_mac(dev, ivm->vf, |
| 1219 | ivm->mac); |
| 1220 | break; |
| 1221 | } |
| 1222 | case IFLA_VF_VLAN: { |
| 1223 | struct ifla_vf_vlan *ivv; |
| 1224 | ivv = nla_data(vf); |
| 1225 | err = -EOPNOTSUPP; |
| 1226 | if (ops->ndo_set_vf_vlan) |
| 1227 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, |
| 1228 | ivv->vlan, |
| 1229 | ivv->qos); |
| 1230 | break; |
| 1231 | } |
| 1232 | case IFLA_VF_TX_RATE: { |
| 1233 | struct ifla_vf_tx_rate *ivt; |
| 1234 | ivt = nla_data(vf); |
| 1235 | err = -EOPNOTSUPP; |
| 1236 | if (ops->ndo_set_vf_tx_rate) |
| 1237 | err = ops->ndo_set_vf_tx_rate(dev, ivt->vf, |
| 1238 | ivt->rate); |
| 1239 | break; |
| 1240 | } |
Greg Rose | 5f8444a | 2011-10-08 03:05:24 +0000 | [diff] [blame] | 1241 | case IFLA_VF_SPOOFCHK: { |
| 1242 | struct ifla_vf_spoofchk *ivs; |
| 1243 | ivs = nla_data(vf); |
| 1244 | err = -EOPNOTSUPP; |
| 1245 | if (ops->ndo_set_vf_spoofchk) |
| 1246 | err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, |
| 1247 | ivs->setting); |
| 1248 | break; |
| 1249 | } |
Rony Efraim | 1d8faf4 | 2013-06-13 13:19:10 +0300 | [diff] [blame] | 1250 | case IFLA_VF_LINK_STATE: { |
| 1251 | struct ifla_vf_link_state *ivl; |
| 1252 | ivl = nla_data(vf); |
| 1253 | err = -EOPNOTSUPP; |
| 1254 | if (ops->ndo_set_vf_link_state) |
| 1255 | err = ops->ndo_set_vf_link_state(dev, ivl->vf, |
| 1256 | ivl->link_state); |
| 1257 | break; |
| 1258 | } |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 1259 | default: |
| 1260 | err = -EINVAL; |
| 1261 | break; |
| 1262 | } |
| 1263 | if (err) |
| 1264 | break; |
| 1265 | } |
| 1266 | return err; |
| 1267 | } |
| 1268 | |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 1269 | static int do_set_master(struct net_device *dev, int ifindex) |
| 1270 | { |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 1271 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 1272 | const struct net_device_ops *ops; |
| 1273 | int err; |
| 1274 | |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 1275 | if (upper_dev) { |
| 1276 | if (upper_dev->ifindex == ifindex) |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 1277 | return 0; |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 1278 | ops = upper_dev->netdev_ops; |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 1279 | if (ops->ndo_del_slave) { |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 1280 | err = ops->ndo_del_slave(upper_dev, dev); |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 1281 | if (err) |
| 1282 | return err; |
| 1283 | } else { |
| 1284 | return -EOPNOTSUPP; |
| 1285 | } |
| 1286 | } |
| 1287 | |
| 1288 | if (ifindex) { |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 1289 | upper_dev = __dev_get_by_index(dev_net(dev), ifindex); |
| 1290 | if (!upper_dev) |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 1291 | return -EINVAL; |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 1292 | ops = upper_dev->netdev_ops; |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 1293 | if (ops->ndo_add_slave) { |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 1294 | err = ops->ndo_add_slave(upper_dev, dev); |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 1295 | if (err) |
| 1296 | return err; |
| 1297 | } else { |
| 1298 | return -EOPNOTSUPP; |
| 1299 | } |
| 1300 | } |
| 1301 | return 0; |
| 1302 | } |
| 1303 | |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1304 | static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm, |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1305 | struct nlattr **tb, char *ifname, int modified) |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1306 | { |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1307 | const struct net_device_ops *ops = dev->netdev_ops; |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1308 | int err; |
| 1309 | |
Eric W. Biederman | f063052 | 2011-05-04 17:51:50 -0700 | [diff] [blame] | 1310 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) { |
Eric W. Biederman | 81adee4 | 2009-11-08 00:53:51 -0800 | [diff] [blame] | 1311 | struct net *net = rtnl_link_get_net(dev_net(dev), tb); |
Eric W. Biederman | d8a5ec6 | 2007-09-12 13:57:04 +0200 | [diff] [blame] | 1312 | if (IS_ERR(net)) { |
| 1313 | err = PTR_ERR(net); |
| 1314 | goto errout; |
| 1315 | } |
Eric W. Biederman | b51642f | 2012-11-16 03:03:11 +0000 | [diff] [blame] | 1316 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) { |
| 1317 | err = -EPERM; |
| 1318 | goto errout; |
| 1319 | } |
Eric W. Biederman | d8a5ec6 | 2007-09-12 13:57:04 +0200 | [diff] [blame] | 1320 | err = dev_change_net_namespace(dev, net, ifname); |
| 1321 | put_net(net); |
| 1322 | if (err) |
| 1323 | goto errout; |
| 1324 | modified = 1; |
| 1325 | } |
| 1326 | |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1327 | if (tb[IFLA_MAP]) { |
| 1328 | struct rtnl_link_ifmap *u_map; |
| 1329 | struct ifmap k_map; |
| 1330 | |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1331 | if (!ops->ndo_set_config) { |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1332 | err = -EOPNOTSUPP; |
| 1333 | goto errout; |
| 1334 | } |
| 1335 | |
| 1336 | if (!netif_device_present(dev)) { |
| 1337 | err = -ENODEV; |
| 1338 | goto errout; |
| 1339 | } |
| 1340 | |
| 1341 | u_map = nla_data(tb[IFLA_MAP]); |
| 1342 | k_map.mem_start = (unsigned long) u_map->mem_start; |
| 1343 | k_map.mem_end = (unsigned long) u_map->mem_end; |
| 1344 | k_map.base_addr = (unsigned short) u_map->base_addr; |
| 1345 | k_map.irq = (unsigned char) u_map->irq; |
| 1346 | k_map.dma = (unsigned char) u_map->dma; |
| 1347 | k_map.port = (unsigned char) u_map->port; |
| 1348 | |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1349 | err = ops->ndo_set_config(dev, &k_map); |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1350 | if (err < 0) |
| 1351 | goto errout; |
| 1352 | |
| 1353 | modified = 1; |
| 1354 | } |
| 1355 | |
| 1356 | if (tb[IFLA_ADDRESS]) { |
| 1357 | struct sockaddr *sa; |
| 1358 | int len; |
| 1359 | |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1360 | len = sizeof(sa_family_t) + dev->addr_len; |
| 1361 | sa = kmalloc(len, GFP_KERNEL); |
| 1362 | if (!sa) { |
| 1363 | err = -ENOMEM; |
| 1364 | goto errout; |
| 1365 | } |
| 1366 | sa->sa_family = dev->type; |
| 1367 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
| 1368 | dev->addr_len); |
Jiri Pirko | e7c3273 | 2013-01-01 03:30:13 +0000 | [diff] [blame] | 1369 | err = dev_set_mac_address(dev, sa); |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1370 | kfree(sa); |
| 1371 | if (err) |
| 1372 | goto errout; |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1373 | modified = 1; |
| 1374 | } |
| 1375 | |
| 1376 | if (tb[IFLA_MTU]) { |
| 1377 | err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU])); |
| 1378 | if (err < 0) |
| 1379 | goto errout; |
| 1380 | modified = 1; |
| 1381 | } |
| 1382 | |
Vlad Dogaru | cbda10f | 2011-01-13 23:38:30 +0000 | [diff] [blame] | 1383 | if (tb[IFLA_GROUP]) { |
| 1384 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); |
| 1385 | modified = 1; |
| 1386 | } |
| 1387 | |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1388 | /* |
| 1389 | * Interface selected by interface index but interface |
| 1390 | * name provided implies that a name change has been |
| 1391 | * requested. |
| 1392 | */ |
| 1393 | if (ifm->ifi_index > 0 && ifname[0]) { |
| 1394 | err = dev_change_name(dev, ifname); |
| 1395 | if (err < 0) |
| 1396 | goto errout; |
| 1397 | modified = 1; |
| 1398 | } |
| 1399 | |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 1400 | if (tb[IFLA_IFALIAS]) { |
| 1401 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), |
| 1402 | nla_len(tb[IFLA_IFALIAS])); |
| 1403 | if (err < 0) |
| 1404 | goto errout; |
| 1405 | modified = 1; |
| 1406 | } |
| 1407 | |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1408 | if (tb[IFLA_BROADCAST]) { |
| 1409 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); |
Jiri Pirko | e7c3273 | 2013-01-01 03:30:13 +0000 | [diff] [blame] | 1410 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1411 | } |
| 1412 | |
| 1413 | if (ifm->ifi_flags || ifm->ifi_change) { |
Patrick McHardy | 3729d50 | 2010-02-26 06:34:54 +0000 | [diff] [blame] | 1414 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); |
Johannes Berg | 5f9021c | 2008-11-16 23:20:31 -0800 | [diff] [blame] | 1415 | if (err < 0) |
| 1416 | goto errout; |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1417 | } |
| 1418 | |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 1419 | if (tb[IFLA_MASTER]) { |
| 1420 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER])); |
| 1421 | if (err) |
| 1422 | goto errout; |
| 1423 | modified = 1; |
| 1424 | } |
| 1425 | |
Jiri Pirko | 9a57247 | 2012-12-27 23:49:39 +0000 | [diff] [blame] | 1426 | if (tb[IFLA_CARRIER]) { |
| 1427 | err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER])); |
| 1428 | if (err) |
| 1429 | goto errout; |
| 1430 | modified = 1; |
| 1431 | } |
| 1432 | |
David S. Miller | 93b2d4a | 2008-02-17 18:35:07 -0800 | [diff] [blame] | 1433 | if (tb[IFLA_TXQLEN]) |
| 1434 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1435 | |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1436 | if (tb[IFLA_OPERSTATE]) |
David S. Miller | 93b2d4a | 2008-02-17 18:35:07 -0800 | [diff] [blame] | 1437 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1438 | |
| 1439 | if (tb[IFLA_LINKMODE]) { |
David S. Miller | 93b2d4a | 2008-02-17 18:35:07 -0800 | [diff] [blame] | 1440 | write_lock_bh(&dev_base_lock); |
| 1441 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); |
| 1442 | write_unlock_bh(&dev_base_lock); |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1443 | } |
| 1444 | |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 1445 | if (tb[IFLA_VFINFO_LIST]) { |
| 1446 | struct nlattr *attr; |
| 1447 | int rem; |
| 1448 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { |
David Howells | 253683b | 2010-05-21 02:25:27 +0000 | [diff] [blame] | 1449 | if (nla_type(attr) != IFLA_VF_INFO) { |
| 1450 | err = -EINVAL; |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 1451 | goto errout; |
David Howells | 253683b | 2010-05-21 02:25:27 +0000 | [diff] [blame] | 1452 | } |
Chris Wright | c02db8c | 2010-05-16 01:05:45 -0700 | [diff] [blame] | 1453 | err = do_setvfinfo(dev, attr); |
| 1454 | if (err < 0) |
| 1455 | goto errout; |
| 1456 | modified = 1; |
| 1457 | } |
Williams, Mitch A | ebc08a6 | 2010-02-10 01:44:05 +0000 | [diff] [blame] | 1458 | } |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1459 | err = 0; |
| 1460 | |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 1461 | if (tb[IFLA_VF_PORTS]) { |
| 1462 | struct nlattr *port[IFLA_PORT_MAX+1]; |
| 1463 | struct nlattr *attr; |
| 1464 | int vf; |
| 1465 | int rem; |
| 1466 | |
| 1467 | err = -EOPNOTSUPP; |
| 1468 | if (!ops->ndo_set_vf_port) |
| 1469 | goto errout; |
| 1470 | |
| 1471 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { |
| 1472 | if (nla_type(attr) != IFLA_VF_PORT) |
| 1473 | continue; |
| 1474 | err = nla_parse_nested(port, IFLA_PORT_MAX, |
| 1475 | attr, ifla_port_policy); |
| 1476 | if (err < 0) |
| 1477 | goto errout; |
| 1478 | if (!port[IFLA_PORT_VF]) { |
| 1479 | err = -EOPNOTSUPP; |
| 1480 | goto errout; |
| 1481 | } |
| 1482 | vf = nla_get_u32(port[IFLA_PORT_VF]); |
| 1483 | err = ops->ndo_set_vf_port(dev, vf, port); |
| 1484 | if (err < 0) |
| 1485 | goto errout; |
| 1486 | modified = 1; |
| 1487 | } |
| 1488 | } |
| 1489 | err = 0; |
| 1490 | |
| 1491 | if (tb[IFLA_PORT_SELF]) { |
| 1492 | struct nlattr *port[IFLA_PORT_MAX+1]; |
| 1493 | |
| 1494 | err = nla_parse_nested(port, IFLA_PORT_MAX, |
| 1495 | tb[IFLA_PORT_SELF], ifla_port_policy); |
| 1496 | if (err < 0) |
| 1497 | goto errout; |
| 1498 | |
| 1499 | err = -EOPNOTSUPP; |
| 1500 | if (ops->ndo_set_vf_port) |
| 1501 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); |
| 1502 | if (err < 0) |
| 1503 | goto errout; |
| 1504 | modified = 1; |
| 1505 | } |
Thomas Graf | f8ff182 | 2010-11-16 04:30:14 +0000 | [diff] [blame] | 1506 | |
| 1507 | if (tb[IFLA_AF_SPEC]) { |
| 1508 | struct nlattr *af; |
| 1509 | int rem; |
| 1510 | |
| 1511 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { |
| 1512 | const struct rtnl_af_ops *af_ops; |
| 1513 | |
| 1514 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) |
Thomas Graf | cf7afbf | 2010-11-22 01:31:54 +0000 | [diff] [blame] | 1515 | BUG(); |
Thomas Graf | f8ff182 | 2010-11-16 04:30:14 +0000 | [diff] [blame] | 1516 | |
Thomas Graf | cf7afbf | 2010-11-22 01:31:54 +0000 | [diff] [blame] | 1517 | err = af_ops->set_link_af(dev, af); |
Thomas Graf | f8ff182 | 2010-11-16 04:30:14 +0000 | [diff] [blame] | 1518 | if (err < 0) |
| 1519 | goto errout; |
| 1520 | |
| 1521 | modified = 1; |
| 1522 | } |
| 1523 | } |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 1524 | err = 0; |
| 1525 | |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1526 | errout: |
Joe Perches | e87cc47 | 2012-05-13 21:56:26 +0000 | [diff] [blame] | 1527 | if (err < 0 && modified) |
| 1528 | net_warn_ratelimited("A link change request failed with some changes committed already. Interface %s may have been left with an inconsistent configuration, please check.\n", |
| 1529 | dev->name); |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1530 | |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1531 | return err; |
| 1532 | } |
| 1533 | |
Thomas Graf | 661d296 | 2013-03-21 07:45:29 +0000 | [diff] [blame] | 1534 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1535 | { |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 1536 | struct net *net = sock_net(skb->sk); |
Thomas Graf | da5e049 | 2006-08-10 21:17:37 -0700 | [diff] [blame] | 1537 | struct ifinfomsg *ifm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | struct net_device *dev; |
Patrick McHardy | 0157f60 | 2007-06-13 12:03:36 -0700 | [diff] [blame] | 1539 | int err; |
Thomas Graf | da5e049 | 2006-08-10 21:17:37 -0700 | [diff] [blame] | 1540 | struct nlattr *tb[IFLA_MAX+1]; |
| 1541 | char ifname[IFNAMSIZ]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1542 | |
Thomas Graf | da5e049 | 2006-08-10 21:17:37 -0700 | [diff] [blame] | 1543 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
| 1544 | if (err < 0) |
| 1545 | goto errout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | |
Thomas Graf | 5176f91 | 2006-08-26 20:13:18 -0700 | [diff] [blame] | 1547 | if (tb[IFLA_IFNAME]) |
| 1548 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); |
Patrick McHardy | 78e5b891 | 2006-09-13 20:35:36 -0700 | [diff] [blame] | 1549 | else |
| 1550 | ifname[0] = '\0'; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1552 | err = -EINVAL; |
Thomas Graf | da5e049 | 2006-08-10 21:17:37 -0700 | [diff] [blame] | 1553 | ifm = nlmsg_data(nlh); |
Patrick McHardy | 51055be | 2007-06-05 12:40:01 -0700 | [diff] [blame] | 1554 | if (ifm->ifi_index > 0) |
Eric Dumazet | a3d1289 | 2009-10-21 10:59:31 +0000 | [diff] [blame] | 1555 | dev = __dev_get_by_index(net, ifm->ifi_index); |
Thomas Graf | da5e049 | 2006-08-10 21:17:37 -0700 | [diff] [blame] | 1556 | else if (tb[IFLA_IFNAME]) |
Eric Dumazet | a3d1289 | 2009-10-21 10:59:31 +0000 | [diff] [blame] | 1557 | dev = __dev_get_by_name(net, ifname); |
Thomas Graf | da5e049 | 2006-08-10 21:17:37 -0700 | [diff] [blame] | 1558 | else |
| 1559 | goto errout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | |
Thomas Graf | da5e049 | 2006-08-10 21:17:37 -0700 | [diff] [blame] | 1561 | if (dev == NULL) { |
| 1562 | err = -ENODEV; |
| 1563 | goto errout; |
| 1564 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1565 | |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 1566 | err = validate_linkmsg(dev, tb); |
| 1567 | if (err < 0) |
Eric Dumazet | a3d1289 | 2009-10-21 10:59:31 +0000 | [diff] [blame] | 1568 | goto errout; |
Thomas Graf | da5e049 | 2006-08-10 21:17:37 -0700 | [diff] [blame] | 1569 | |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1570 | err = do_setlink(dev, ifm, tb, ifname, 0); |
Thomas Graf | da5e049 | 2006-08-10 21:17:37 -0700 | [diff] [blame] | 1571 | errout: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | return err; |
| 1573 | } |
| 1574 | |
Thomas Graf | 661d296 | 2013-03-21 07:45:29 +0000 | [diff] [blame] | 1575 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1576 | { |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 1577 | struct net *net = sock_net(skb->sk); |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1578 | const struct rtnl_link_ops *ops; |
| 1579 | struct net_device *dev; |
| 1580 | struct ifinfomsg *ifm; |
| 1581 | char ifname[IFNAMSIZ]; |
| 1582 | struct nlattr *tb[IFLA_MAX+1]; |
| 1583 | int err; |
Eric Dumazet | 226bd34 | 2011-05-08 23:17:57 +0000 | [diff] [blame] | 1584 | LIST_HEAD(list_kill); |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1585 | |
| 1586 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
| 1587 | if (err < 0) |
| 1588 | return err; |
| 1589 | |
| 1590 | if (tb[IFLA_IFNAME]) |
| 1591 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); |
| 1592 | |
| 1593 | ifm = nlmsg_data(nlh); |
| 1594 | if (ifm->ifi_index > 0) |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1595 | dev = __dev_get_by_index(net, ifm->ifi_index); |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1596 | else if (tb[IFLA_IFNAME]) |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1597 | dev = __dev_get_by_name(net, ifname); |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1598 | else |
| 1599 | return -EINVAL; |
| 1600 | |
| 1601 | if (!dev) |
| 1602 | return -ENODEV; |
| 1603 | |
| 1604 | ops = dev->rtnl_link_ops; |
| 1605 | if (!ops) |
| 1606 | return -EOPNOTSUPP; |
| 1607 | |
Eric Dumazet | 226bd34 | 2011-05-08 23:17:57 +0000 | [diff] [blame] | 1608 | ops->dellink(dev, &list_kill); |
| 1609 | unregister_netdevice_many(&list_kill); |
| 1610 | list_del(&list_kill); |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1611 | return 0; |
| 1612 | } |
| 1613 | |
Patrick McHardy | 3729d50 | 2010-02-26 06:34:54 +0000 | [diff] [blame] | 1614 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm) |
| 1615 | { |
| 1616 | unsigned int old_flags; |
| 1617 | int err; |
| 1618 | |
| 1619 | old_flags = dev->flags; |
| 1620 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { |
| 1621 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); |
| 1622 | if (err < 0) |
| 1623 | return err; |
| 1624 | } |
| 1625 | |
| 1626 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; |
| 1627 | rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U); |
| 1628 | |
| 1629 | __dev_notify_flags(dev, old_flags); |
| 1630 | return 0; |
| 1631 | } |
| 1632 | EXPORT_SYMBOL(rtnl_configure_link); |
| 1633 | |
Rami Rosen | c071356 | 2012-11-30 01:08:47 +0000 | [diff] [blame] | 1634 | struct net_device *rtnl_create_link(struct net *net, |
Eric W. Biederman | 81adee4 | 2009-11-08 00:53:51 -0800 | [diff] [blame] | 1635 | char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]) |
Pavel Emelianov | e719928 | 2007-08-08 22:16:38 -0700 | [diff] [blame] | 1636 | { |
| 1637 | int err; |
| 1638 | struct net_device *dev; |
Jiri Pirko | d40156a | 2012-07-20 02:28:47 +0000 | [diff] [blame] | 1639 | unsigned int num_tx_queues = 1; |
| 1640 | unsigned int num_rx_queues = 1; |
Pavel Emelianov | e719928 | 2007-08-08 22:16:38 -0700 | [diff] [blame] | 1641 | |
Jiri Pirko | 76ff5cc | 2012-07-20 02:28:48 +0000 | [diff] [blame] | 1642 | if (tb[IFLA_NUM_TX_QUEUES]) |
| 1643 | num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); |
| 1644 | else if (ops->get_num_tx_queues) |
Jiri Pirko | d40156a | 2012-07-20 02:28:47 +0000 | [diff] [blame] | 1645 | num_tx_queues = ops->get_num_tx_queues(); |
Jiri Pirko | 76ff5cc | 2012-07-20 02:28:48 +0000 | [diff] [blame] | 1646 | |
| 1647 | if (tb[IFLA_NUM_RX_QUEUES]) |
| 1648 | num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); |
| 1649 | else if (ops->get_num_rx_queues) |
Jiri Pirko | d40156a | 2012-07-20 02:28:47 +0000 | [diff] [blame] | 1650 | num_rx_queues = ops->get_num_rx_queues(); |
stephen hemminger | efacb30 | 2012-04-10 18:34:43 +0000 | [diff] [blame] | 1651 | |
Pavel Emelianov | e719928 | 2007-08-08 22:16:38 -0700 | [diff] [blame] | 1652 | err = -ENOMEM; |
Jiri Pirko | d40156a | 2012-07-20 02:28:47 +0000 | [diff] [blame] | 1653 | dev = alloc_netdev_mqs(ops->priv_size, ifname, ops->setup, |
| 1654 | num_tx_queues, num_rx_queues); |
Pavel Emelianov | e719928 | 2007-08-08 22:16:38 -0700 | [diff] [blame] | 1655 | if (!dev) |
| 1656 | goto err; |
| 1657 | |
Eric W. Biederman | 81adee4 | 2009-11-08 00:53:51 -0800 | [diff] [blame] | 1658 | dev_net_set(dev, net); |
| 1659 | dev->rtnl_link_ops = ops; |
Patrick McHardy | 3729d50 | 2010-02-26 06:34:54 +0000 | [diff] [blame] | 1660 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
Eric W. Biederman | 81adee4 | 2009-11-08 00:53:51 -0800 | [diff] [blame] | 1661 | |
Pavel Emelianov | e719928 | 2007-08-08 22:16:38 -0700 | [diff] [blame] | 1662 | if (tb[IFLA_MTU]) |
| 1663 | dev->mtu = nla_get_u32(tb[IFLA_MTU]); |
Jiri Pirko | 2afb9b5 | 2013-01-06 12:41:57 +0000 | [diff] [blame] | 1664 | if (tb[IFLA_ADDRESS]) { |
Pavel Emelianov | e719928 | 2007-08-08 22:16:38 -0700 | [diff] [blame] | 1665 | memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]), |
| 1666 | nla_len(tb[IFLA_ADDRESS])); |
Jiri Pirko | 2afb9b5 | 2013-01-06 12:41:57 +0000 | [diff] [blame] | 1667 | dev->addr_assign_type = NET_ADDR_SET; |
| 1668 | } |
Pavel Emelianov | e719928 | 2007-08-08 22:16:38 -0700 | [diff] [blame] | 1669 | if (tb[IFLA_BROADCAST]) |
| 1670 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), |
| 1671 | nla_len(tb[IFLA_BROADCAST])); |
| 1672 | if (tb[IFLA_TXQLEN]) |
| 1673 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); |
| 1674 | if (tb[IFLA_OPERSTATE]) |
David S. Miller | 93b2d4a | 2008-02-17 18:35:07 -0800 | [diff] [blame] | 1675 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
Pavel Emelianov | e719928 | 2007-08-08 22:16:38 -0700 | [diff] [blame] | 1676 | if (tb[IFLA_LINKMODE]) |
| 1677 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); |
Patrick McHardy | ffa934f | 2011-01-20 03:00:42 +0000 | [diff] [blame] | 1678 | if (tb[IFLA_GROUP]) |
| 1679 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); |
Pavel Emelianov | e719928 | 2007-08-08 22:16:38 -0700 | [diff] [blame] | 1680 | |
| 1681 | return dev; |
| 1682 | |
Pavel Emelianov | e719928 | 2007-08-08 22:16:38 -0700 | [diff] [blame] | 1683 | err: |
| 1684 | return ERR_PTR(err); |
| 1685 | } |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 1686 | EXPORT_SYMBOL(rtnl_create_link); |
Pavel Emelianov | e719928 | 2007-08-08 22:16:38 -0700 | [diff] [blame] | 1687 | |
Vlad Dogaru | e7ed828 | 2011-01-13 23:38:31 +0000 | [diff] [blame] | 1688 | static int rtnl_group_changelink(struct net *net, int group, |
| 1689 | struct ifinfomsg *ifm, |
| 1690 | struct nlattr **tb) |
| 1691 | { |
| 1692 | struct net_device *dev; |
| 1693 | int err; |
| 1694 | |
| 1695 | for_each_netdev(net, dev) { |
| 1696 | if (dev->group == group) { |
| 1697 | err = do_setlink(dev, ifm, tb, NULL, 0); |
| 1698 | if (err < 0) |
| 1699 | return err; |
| 1700 | } |
| 1701 | } |
| 1702 | |
| 1703 | return 0; |
| 1704 | } |
| 1705 | |
Thomas Graf | 661d296 | 2013-03-21 07:45:29 +0000 | [diff] [blame] | 1706 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1707 | { |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 1708 | struct net *net = sock_net(skb->sk); |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1709 | const struct rtnl_link_ops *ops; |
| 1710 | struct net_device *dev; |
| 1711 | struct ifinfomsg *ifm; |
| 1712 | char kind[MODULE_NAME_LEN]; |
| 1713 | char ifname[IFNAMSIZ]; |
| 1714 | struct nlattr *tb[IFLA_MAX+1]; |
| 1715 | struct nlattr *linkinfo[IFLA_INFO_MAX+1]; |
| 1716 | int err; |
| 1717 | |
Johannes Berg | 95a5afc | 2008-10-16 15:24:51 -0700 | [diff] [blame] | 1718 | #ifdef CONFIG_MODULES |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1719 | replay: |
Thomas Graf | 8072f08 | 2007-07-31 14:13:50 -0700 | [diff] [blame] | 1720 | #endif |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1721 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
| 1722 | if (err < 0) |
| 1723 | return err; |
| 1724 | |
| 1725 | if (tb[IFLA_IFNAME]) |
| 1726 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); |
| 1727 | else |
| 1728 | ifname[0] = '\0'; |
| 1729 | |
| 1730 | ifm = nlmsg_data(nlh); |
| 1731 | if (ifm->ifi_index > 0) |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1732 | dev = __dev_get_by_index(net, ifm->ifi_index); |
Vlad Dogaru | e7ed828 | 2011-01-13 23:38:31 +0000 | [diff] [blame] | 1733 | else { |
| 1734 | if (ifname[0]) |
| 1735 | dev = __dev_get_by_name(net, ifname); |
Vlad Dogaru | e7ed828 | 2011-01-13 23:38:31 +0000 | [diff] [blame] | 1736 | else |
| 1737 | dev = NULL; |
| 1738 | } |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1739 | |
Eric Dumazet | e0d087a | 2009-11-07 01:26:17 -0800 | [diff] [blame] | 1740 | err = validate_linkmsg(dev, tb); |
| 1741 | if (err < 0) |
Thomas Graf | 1840bb1 | 2008-02-23 19:54:36 -0800 | [diff] [blame] | 1742 | return err; |
| 1743 | |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1744 | if (tb[IFLA_LINKINFO]) { |
| 1745 | err = nla_parse_nested(linkinfo, IFLA_INFO_MAX, |
| 1746 | tb[IFLA_LINKINFO], ifla_info_policy); |
| 1747 | if (err < 0) |
| 1748 | return err; |
| 1749 | } else |
| 1750 | memset(linkinfo, 0, sizeof(linkinfo)); |
| 1751 | |
| 1752 | if (linkinfo[IFLA_INFO_KIND]) { |
| 1753 | nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); |
| 1754 | ops = rtnl_link_ops_get(kind); |
| 1755 | } else { |
| 1756 | kind[0] = '\0'; |
| 1757 | ops = NULL; |
| 1758 | } |
| 1759 | |
| 1760 | if (1) { |
| 1761 | struct nlattr *attr[ops ? ops->maxtype + 1 : 0], **data = NULL; |
Eric W. Biederman | 81adee4 | 2009-11-08 00:53:51 -0800 | [diff] [blame] | 1762 | struct net *dest_net; |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1763 | |
| 1764 | if (ops) { |
| 1765 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { |
| 1766 | err = nla_parse_nested(attr, ops->maxtype, |
| 1767 | linkinfo[IFLA_INFO_DATA], |
| 1768 | ops->policy); |
| 1769 | if (err < 0) |
| 1770 | return err; |
| 1771 | data = attr; |
| 1772 | } |
| 1773 | if (ops->validate) { |
| 1774 | err = ops->validate(tb, data); |
| 1775 | if (err < 0) |
| 1776 | return err; |
| 1777 | } |
| 1778 | } |
| 1779 | |
| 1780 | if (dev) { |
| 1781 | int modified = 0; |
| 1782 | |
| 1783 | if (nlh->nlmsg_flags & NLM_F_EXCL) |
| 1784 | return -EEXIST; |
| 1785 | if (nlh->nlmsg_flags & NLM_F_REPLACE) |
| 1786 | return -EOPNOTSUPP; |
| 1787 | |
| 1788 | if (linkinfo[IFLA_INFO_DATA]) { |
| 1789 | if (!ops || ops != dev->rtnl_link_ops || |
| 1790 | !ops->changelink) |
| 1791 | return -EOPNOTSUPP; |
| 1792 | |
| 1793 | err = ops->changelink(dev, tb, data); |
| 1794 | if (err < 0) |
| 1795 | return err; |
| 1796 | modified = 1; |
| 1797 | } |
| 1798 | |
| 1799 | return do_setlink(dev, ifm, tb, ifname, modified); |
| 1800 | } |
| 1801 | |
Patrick McHardy | ffa934f | 2011-01-20 03:00:42 +0000 | [diff] [blame] | 1802 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { |
| 1803 | if (ifm->ifi_index == 0 && tb[IFLA_GROUP]) |
| 1804 | return rtnl_group_changelink(net, |
| 1805 | nla_get_u32(tb[IFLA_GROUP]), |
| 1806 | ifm, tb); |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1807 | return -ENODEV; |
Patrick McHardy | ffa934f | 2011-01-20 03:00:42 +0000 | [diff] [blame] | 1808 | } |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1809 | |
Patrick McHardy | 0e06877 | 2007-07-11 19:42:31 -0700 | [diff] [blame] | 1810 | if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO]) |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1811 | return -EOPNOTSUPP; |
| 1812 | |
| 1813 | if (!ops) { |
Johannes Berg | 95a5afc | 2008-10-16 15:24:51 -0700 | [diff] [blame] | 1814 | #ifdef CONFIG_MODULES |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1815 | if (kind[0]) { |
| 1816 | __rtnl_unlock(); |
| 1817 | request_module("rtnl-link-%s", kind); |
| 1818 | rtnl_lock(); |
| 1819 | ops = rtnl_link_ops_get(kind); |
| 1820 | if (ops) |
| 1821 | goto replay; |
| 1822 | } |
| 1823 | #endif |
| 1824 | return -EOPNOTSUPP; |
| 1825 | } |
| 1826 | |
| 1827 | if (!ifname[0]) |
| 1828 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1829 | |
Eric W. Biederman | 81adee4 | 2009-11-08 00:53:51 -0800 | [diff] [blame] | 1830 | dest_net = rtnl_link_get_net(net, tb); |
Eric W. Biederman | 13ad177 | 2011-01-29 14:57:22 +0000 | [diff] [blame] | 1831 | if (IS_ERR(dest_net)) |
| 1832 | return PTR_ERR(dest_net); |
| 1833 | |
Rami Rosen | c071356 | 2012-11-30 01:08:47 +0000 | [diff] [blame] | 1834 | dev = rtnl_create_link(dest_net, ifname, ops, tb); |
Pavel Emelyanov | 9c7dafb | 2012-08-08 21:52:46 +0000 | [diff] [blame] | 1835 | if (IS_ERR(dev)) { |
Pavel Emelianov | e719928 | 2007-08-08 22:16:38 -0700 | [diff] [blame] | 1836 | err = PTR_ERR(dev); |
Pavel Emelyanov | 9c7dafb | 2012-08-08 21:52:46 +0000 | [diff] [blame] | 1837 | goto out; |
| 1838 | } |
| 1839 | |
| 1840 | dev->ifindex = ifm->ifi_index; |
| 1841 | |
| 1842 | if (ops->newlink) |
Eric W. Biederman | 81adee4 | 2009-11-08 00:53:51 -0800 | [diff] [blame] | 1843 | err = ops->newlink(net, dev, tb, data); |
Patrick McHardy | 2d85cba | 2007-07-11 19:42:13 -0700 | [diff] [blame] | 1844 | else |
| 1845 | err = register_netdevice(dev); |
Dan Carpenter | 80032cf | 2010-04-21 23:53:27 +0000 | [diff] [blame] | 1846 | |
| 1847 | if (err < 0 && !IS_ERR(dev)) |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1848 | free_netdev(dev); |
Dan Carpenter | 80032cf | 2010-04-21 23:53:27 +0000 | [diff] [blame] | 1849 | if (err < 0) |
Patrick McHardy | 3729d50 | 2010-02-26 06:34:54 +0000 | [diff] [blame] | 1850 | goto out; |
Eric W. Biederman | 81adee4 | 2009-11-08 00:53:51 -0800 | [diff] [blame] | 1851 | |
Patrick McHardy | 3729d50 | 2010-02-26 06:34:54 +0000 | [diff] [blame] | 1852 | err = rtnl_configure_link(dev, ifm); |
| 1853 | if (err < 0) |
| 1854 | unregister_netdevice(dev); |
| 1855 | out: |
Eric W. Biederman | 81adee4 | 2009-11-08 00:53:51 -0800 | [diff] [blame] | 1856 | put_net(dest_net); |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1857 | return err; |
| 1858 | } |
| 1859 | } |
| 1860 | |
Thomas Graf | 661d296 | 2013-03-21 07:45:29 +0000 | [diff] [blame] | 1861 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh) |
Jean Tourrilhes | 711e2c3 | 2006-02-22 15:10:56 -0800 | [diff] [blame] | 1862 | { |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 1863 | struct net *net = sock_net(skb->sk); |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 1864 | struct ifinfomsg *ifm; |
Eric Dumazet | a3d1289 | 2009-10-21 10:59:31 +0000 | [diff] [blame] | 1865 | char ifname[IFNAMSIZ]; |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 1866 | struct nlattr *tb[IFLA_MAX+1]; |
| 1867 | struct net_device *dev = NULL; |
| 1868 | struct sk_buff *nskb; |
Thomas Graf | 339bf98 | 2006-11-10 14:10:15 -0800 | [diff] [blame] | 1869 | int err; |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1870 | u32 ext_filter_mask = 0; |
Jean Tourrilhes | 711e2c3 | 2006-02-22 15:10:56 -0800 | [diff] [blame] | 1871 | |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 1872 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
| 1873 | if (err < 0) |
Eric Sesterhenn | 9918f23 | 2006-09-26 23:26:38 -0700 | [diff] [blame] | 1874 | return err; |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 1875 | |
Eric Dumazet | a3d1289 | 2009-10-21 10:59:31 +0000 | [diff] [blame] | 1876 | if (tb[IFLA_IFNAME]) |
| 1877 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); |
| 1878 | |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1879 | if (tb[IFLA_EXT_MASK]) |
| 1880 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); |
| 1881 | |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 1882 | ifm = nlmsg_data(nlh); |
Eric Dumazet | a3d1289 | 2009-10-21 10:59:31 +0000 | [diff] [blame] | 1883 | if (ifm->ifi_index > 0) |
| 1884 | dev = __dev_get_by_index(net, ifm->ifi_index); |
| 1885 | else if (tb[IFLA_IFNAME]) |
| 1886 | dev = __dev_get_by_name(net, ifname); |
| 1887 | else |
Jean Tourrilhes | 711e2c3 | 2006-02-22 15:10:56 -0800 | [diff] [blame] | 1888 | return -EINVAL; |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 1889 | |
Eric Dumazet | a3d1289 | 2009-10-21 10:59:31 +0000 | [diff] [blame] | 1890 | if (dev == NULL) |
| 1891 | return -ENODEV; |
| 1892 | |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1893 | nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL); |
Eric Dumazet | a3d1289 | 2009-10-21 10:59:31 +0000 | [diff] [blame] | 1894 | if (nskb == NULL) |
| 1895 | return -ENOBUFS; |
Jean Tourrilhes | 711e2c3 | 2006-02-22 15:10:56 -0800 | [diff] [blame] | 1896 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1897 | err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid, |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1898 | nlh->nlmsg_seq, 0, 0, ext_filter_mask); |
Patrick McHardy | 2693256 | 2007-01-31 23:16:40 -0800 | [diff] [blame] | 1899 | if (err < 0) { |
| 1900 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ |
| 1901 | WARN_ON(err == -EMSGSIZE); |
| 1902 | kfree_skb(nskb); |
Eric Dumazet | a3d1289 | 2009-10-21 10:59:31 +0000 | [diff] [blame] | 1903 | } else |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1904 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); |
Thomas Graf | b60c511 | 2006-08-04 23:05:34 -0700 | [diff] [blame] | 1905 | |
Jean Tourrilhes | 711e2c3 | 2006-02-22 15:10:56 -0800 | [diff] [blame] | 1906 | return err; |
Jean Tourrilhes | 711e2c3 | 2006-02-22 15:10:56 -0800 | [diff] [blame] | 1907 | } |
Jean Tourrilhes | 711e2c3 | 2006-02-22 15:10:56 -0800 | [diff] [blame] | 1908 | |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1909 | static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 1910 | { |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1911 | struct net *net = sock_net(skb->sk); |
| 1912 | struct net_device *dev; |
| 1913 | struct nlattr *tb[IFLA_MAX+1]; |
| 1914 | u32 ext_filter_mask = 0; |
| 1915 | u16 min_ifinfo_dump_size = 0; |
| 1916 | |
Michael Riesch | 88c5b5c | 2013-04-08 05:45:26 +0000 | [diff] [blame] | 1917 | if (nlmsg_parse(nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, |
Eric Dumazet | a4b64fb | 2012-03-04 12:32:10 +0000 | [diff] [blame] | 1918 | ifla_policy) >= 0) { |
| 1919 | if (tb[IFLA_EXT_MASK]) |
| 1920 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); |
| 1921 | } |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1922 | |
| 1923 | if (!ext_filter_mask) |
| 1924 | return NLMSG_GOODSIZE; |
| 1925 | /* |
| 1926 | * traverse the list of net devices and compute the minimum |
| 1927 | * buffer size based upon the filter mask. |
| 1928 | */ |
| 1929 | list_for_each_entry(dev, &net->dev_base_head, dev_list) { |
| 1930 | min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size, |
| 1931 | if_nlmsg_size(dev, |
| 1932 | ext_filter_mask)); |
| 1933 | } |
| 1934 | |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 1935 | return min_ifinfo_dump_size; |
| 1936 | } |
| 1937 | |
Adrian Bunk | 42bad1d | 2007-04-26 00:57:41 -0700 | [diff] [blame] | 1938 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1939 | { |
| 1940 | int idx; |
| 1941 | int s_idx = cb->family; |
| 1942 | |
| 1943 | if (s_idx == 0) |
| 1944 | s_idx = 1; |
Patrick McHardy | 25239ce | 2010-04-26 16:02:05 +0200 | [diff] [blame] | 1945 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | int type = cb->nlh->nlmsg_type-RTM_BASE; |
| 1947 | if (idx < s_idx || idx == PF_PACKET) |
| 1948 | continue; |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 1949 | if (rtnl_msg_handlers[idx] == NULL || |
| 1950 | rtnl_msg_handlers[idx][type].dumpit == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1951 | continue; |
Nicolas Dichtel | 0465277 | 2013-03-22 06:28:42 +0000 | [diff] [blame] | 1952 | if (idx > s_idx) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1953 | memset(&cb->args[0], 0, sizeof(cb->args)); |
Nicolas Dichtel | 0465277 | 2013-03-22 06:28:42 +0000 | [diff] [blame] | 1954 | cb->prev_seq = 0; |
| 1955 | cb->seq = 0; |
| 1956 | } |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 1957 | if (rtnl_msg_handlers[idx][type].dumpit(skb, cb)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1958 | break; |
| 1959 | } |
| 1960 | cb->family = idx; |
| 1961 | |
| 1962 | return skb->len; |
| 1963 | } |
| 1964 | |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 1965 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1966 | { |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1967 | struct net *net = dev_net(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | struct sk_buff *skb; |
Thomas Graf | 0ec6d3f | 2006-08-15 00:37:09 -0700 | [diff] [blame] | 1969 | int err = -ENOBUFS; |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 1970 | size_t if_info_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1972 | skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), GFP_KERNEL); |
Thomas Graf | 0ec6d3f | 2006-08-15 00:37:09 -0700 | [diff] [blame] | 1973 | if (skb == NULL) |
| 1974 | goto errout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 1976 | err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0); |
Patrick McHardy | 2693256 | 2007-01-31 23:16:40 -0800 | [diff] [blame] | 1977 | if (err < 0) { |
| 1978 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ |
| 1979 | WARN_ON(err == -EMSGSIZE); |
| 1980 | kfree_skb(skb); |
| 1981 | goto errout; |
| 1982 | } |
Pablo Neira Ayuso | 1ce85fe | 2009-02-24 23:18:28 -0800 | [diff] [blame] | 1983 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_KERNEL); |
| 1984 | return; |
Thomas Graf | 0ec6d3f | 2006-08-15 00:37:09 -0700 | [diff] [blame] | 1985 | errout: |
| 1986 | if (err < 0) |
Eric W. Biederman | 4b3da70 | 2007-11-19 22:27:40 -0800 | [diff] [blame] | 1987 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1988 | } |
Jiri Pirko | 471cb5a | 2013-01-03 22:49:01 +0000 | [diff] [blame] | 1989 | EXPORT_SYMBOL(rtmsg_ifinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | |
John Fastabend | d83b060 | 2012-04-15 06:44:08 +0000 | [diff] [blame] | 1991 | static int nlmsg_populate_fdb_fill(struct sk_buff *skb, |
| 1992 | struct net_device *dev, |
| 1993 | u8 *addr, u32 pid, u32 seq, |
| 1994 | int type, unsigned int flags) |
| 1995 | { |
| 1996 | struct nlmsghdr *nlh; |
| 1997 | struct ndmsg *ndm; |
| 1998 | |
| 1999 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), NLM_F_MULTI); |
| 2000 | if (!nlh) |
| 2001 | return -EMSGSIZE; |
| 2002 | |
| 2003 | ndm = nlmsg_data(nlh); |
| 2004 | ndm->ndm_family = AF_BRIDGE; |
| 2005 | ndm->ndm_pad1 = 0; |
| 2006 | ndm->ndm_pad2 = 0; |
| 2007 | ndm->ndm_flags = flags; |
| 2008 | ndm->ndm_type = 0; |
| 2009 | ndm->ndm_ifindex = dev->ifindex; |
| 2010 | ndm->ndm_state = NUD_PERMANENT; |
| 2011 | |
| 2012 | if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) |
| 2013 | goto nla_put_failure; |
| 2014 | |
| 2015 | return nlmsg_end(skb, nlh); |
| 2016 | |
| 2017 | nla_put_failure: |
| 2018 | nlmsg_cancel(skb, nlh); |
| 2019 | return -EMSGSIZE; |
| 2020 | } |
| 2021 | |
John Fastabend | 3ff661c | 2012-04-15 06:44:14 +0000 | [diff] [blame] | 2022 | static inline size_t rtnl_fdb_nlmsg_size(void) |
| 2023 | { |
| 2024 | return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN); |
| 2025 | } |
| 2026 | |
| 2027 | static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, int type) |
| 2028 | { |
| 2029 | struct net *net = dev_net(dev); |
| 2030 | struct sk_buff *skb; |
| 2031 | int err = -ENOBUFS; |
| 2032 | |
| 2033 | skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC); |
| 2034 | if (!skb) |
| 2035 | goto errout; |
| 2036 | |
| 2037 | err = nlmsg_populate_fdb_fill(skb, dev, addr, 0, 0, type, NTF_SELF); |
| 2038 | if (err < 0) { |
| 2039 | kfree_skb(skb); |
| 2040 | goto errout; |
| 2041 | } |
| 2042 | |
| 2043 | rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); |
| 2044 | return; |
| 2045 | errout: |
| 2046 | rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); |
| 2047 | } |
| 2048 | |
Vlad Yasevich | 090096b | 2013-03-06 15:39:42 +0000 | [diff] [blame] | 2049 | /** |
| 2050 | * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry |
| 2051 | */ |
| 2052 | int ndo_dflt_fdb_add(struct ndmsg *ndm, |
| 2053 | struct nlattr *tb[], |
| 2054 | struct net_device *dev, |
| 2055 | const unsigned char *addr, |
| 2056 | u16 flags) |
| 2057 | { |
| 2058 | int err = -EINVAL; |
| 2059 | |
| 2060 | /* If aging addresses are supported device will need to |
| 2061 | * implement its own handler for this. |
| 2062 | */ |
| 2063 | if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { |
| 2064 | pr_info("%s: FDB only supports static addresses\n", dev->name); |
| 2065 | return err; |
| 2066 | } |
| 2067 | |
| 2068 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) |
| 2069 | err = dev_uc_add_excl(dev, addr); |
| 2070 | else if (is_multicast_ether_addr(addr)) |
| 2071 | err = dev_mc_add_excl(dev, addr); |
| 2072 | |
| 2073 | /* Only return duplicate errors if NLM_F_EXCL is set */ |
| 2074 | if (err == -EEXIST && !(flags & NLM_F_EXCL)) |
| 2075 | err = 0; |
| 2076 | |
| 2077 | return err; |
| 2078 | } |
| 2079 | EXPORT_SYMBOL(ndo_dflt_fdb_add); |
| 2080 | |
Thomas Graf | 661d296 | 2013-03-21 07:45:29 +0000 | [diff] [blame] | 2081 | static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh) |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2082 | { |
| 2083 | struct net *net = sock_net(skb->sk); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2084 | struct ndmsg *ndm; |
| 2085 | struct nlattr *tb[NDA_MAX+1]; |
| 2086 | struct net_device *dev; |
| 2087 | u8 *addr; |
| 2088 | int err; |
| 2089 | |
| 2090 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); |
| 2091 | if (err < 0) |
| 2092 | return err; |
| 2093 | |
| 2094 | ndm = nlmsg_data(nlh); |
| 2095 | if (ndm->ndm_ifindex == 0) { |
| 2096 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n"); |
| 2097 | return -EINVAL; |
| 2098 | } |
| 2099 | |
| 2100 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); |
| 2101 | if (dev == NULL) { |
| 2102 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n"); |
| 2103 | return -ENODEV; |
| 2104 | } |
| 2105 | |
| 2106 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { |
| 2107 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n"); |
| 2108 | return -EINVAL; |
| 2109 | } |
| 2110 | |
| 2111 | addr = nla_data(tb[NDA_LLADDR]); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2112 | |
| 2113 | err = -EOPNOTSUPP; |
| 2114 | |
| 2115 | /* Support fdb on master device the net/bridge default case */ |
| 2116 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && |
| 2117 | (dev->priv_flags & IFF_BRIDGE_PORT)) { |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2118 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
| 2119 | const struct net_device_ops *ops = br_dev->netdev_ops; |
| 2120 | |
| 2121 | err = ops->ndo_fdb_add(ndm, tb, dev, addr, nlh->nlmsg_flags); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2122 | if (err) |
| 2123 | goto out; |
| 2124 | else |
| 2125 | ndm->ndm_flags &= ~NTF_MASTER; |
| 2126 | } |
| 2127 | |
| 2128 | /* Embedded bridge, macvlan, and any other device support */ |
Vlad Yasevich | 090096b | 2013-03-06 15:39:42 +0000 | [diff] [blame] | 2129 | if ((ndm->ndm_flags & NTF_SELF)) { |
| 2130 | if (dev->netdev_ops->ndo_fdb_add) |
| 2131 | err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr, |
| 2132 | nlh->nlmsg_flags); |
| 2133 | else |
| 2134 | err = ndo_dflt_fdb_add(ndm, tb, dev, addr, |
| 2135 | nlh->nlmsg_flags); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2136 | |
John Fastabend | 3ff661c | 2012-04-15 06:44:14 +0000 | [diff] [blame] | 2137 | if (!err) { |
| 2138 | rtnl_fdb_notify(dev, addr, RTM_NEWNEIGH); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2139 | ndm->ndm_flags &= ~NTF_SELF; |
John Fastabend | 3ff661c | 2012-04-15 06:44:14 +0000 | [diff] [blame] | 2140 | } |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2141 | } |
| 2142 | out: |
| 2143 | return err; |
| 2144 | } |
| 2145 | |
Vlad Yasevich | 090096b | 2013-03-06 15:39:42 +0000 | [diff] [blame] | 2146 | /** |
| 2147 | * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry |
| 2148 | */ |
| 2149 | int ndo_dflt_fdb_del(struct ndmsg *ndm, |
| 2150 | struct nlattr *tb[], |
| 2151 | struct net_device *dev, |
| 2152 | const unsigned char *addr) |
| 2153 | { |
| 2154 | int err = -EOPNOTSUPP; |
| 2155 | |
| 2156 | /* If aging addresses are supported device will need to |
| 2157 | * implement its own handler for this. |
| 2158 | */ |
| 2159 | if (ndm->ndm_state & NUD_PERMANENT) { |
| 2160 | pr_info("%s: FDB only supports static addresses\n", dev->name); |
| 2161 | return -EINVAL; |
| 2162 | } |
| 2163 | |
| 2164 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) |
| 2165 | err = dev_uc_del(dev, addr); |
| 2166 | else if (is_multicast_ether_addr(addr)) |
| 2167 | err = dev_mc_del(dev, addr); |
| 2168 | else |
| 2169 | err = -EINVAL; |
| 2170 | |
| 2171 | return err; |
| 2172 | } |
| 2173 | EXPORT_SYMBOL(ndo_dflt_fdb_del); |
| 2174 | |
Thomas Graf | 661d296 | 2013-03-21 07:45:29 +0000 | [diff] [blame] | 2175 | static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh) |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2176 | { |
| 2177 | struct net *net = sock_net(skb->sk); |
| 2178 | struct ndmsg *ndm; |
Vlad Yasevich | 1690be6 | 2013-02-13 12:00:18 +0000 | [diff] [blame] | 2179 | struct nlattr *tb[NDA_MAX+1]; |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2180 | struct net_device *dev; |
| 2181 | int err = -EINVAL; |
| 2182 | __u8 *addr; |
| 2183 | |
Vlad Yasevich | 1690be6 | 2013-02-13 12:00:18 +0000 | [diff] [blame] | 2184 | if (!capable(CAP_NET_ADMIN)) |
| 2185 | return -EPERM; |
| 2186 | |
| 2187 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); |
| 2188 | if (err < 0) |
| 2189 | return err; |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2190 | |
| 2191 | ndm = nlmsg_data(nlh); |
| 2192 | if (ndm->ndm_ifindex == 0) { |
| 2193 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n"); |
| 2194 | return -EINVAL; |
| 2195 | } |
| 2196 | |
| 2197 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); |
| 2198 | if (dev == NULL) { |
| 2199 | pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n"); |
| 2200 | return -ENODEV; |
| 2201 | } |
| 2202 | |
Vlad Yasevich | 1690be6 | 2013-02-13 12:00:18 +0000 | [diff] [blame] | 2203 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { |
| 2204 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n"); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2205 | return -EINVAL; |
| 2206 | } |
| 2207 | |
Vlad Yasevich | 1690be6 | 2013-02-13 12:00:18 +0000 | [diff] [blame] | 2208 | addr = nla_data(tb[NDA_LLADDR]); |
Vlad Yasevich | 1690be6 | 2013-02-13 12:00:18 +0000 | [diff] [blame] | 2209 | |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2210 | err = -EOPNOTSUPP; |
| 2211 | |
| 2212 | /* Support fdb on master device the net/bridge default case */ |
| 2213 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && |
| 2214 | (dev->priv_flags & IFF_BRIDGE_PORT)) { |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2215 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
| 2216 | const struct net_device_ops *ops = br_dev->netdev_ops; |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2217 | |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2218 | if (ops->ndo_fdb_del) |
Vlad Yasevich | 1690be6 | 2013-02-13 12:00:18 +0000 | [diff] [blame] | 2219 | err = ops->ndo_fdb_del(ndm, tb, dev, addr); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2220 | |
| 2221 | if (err) |
| 2222 | goto out; |
| 2223 | else |
| 2224 | ndm->ndm_flags &= ~NTF_MASTER; |
| 2225 | } |
| 2226 | |
| 2227 | /* Embedded bridge, macvlan, and any other device support */ |
Vlad Yasevich | 090096b | 2013-03-06 15:39:42 +0000 | [diff] [blame] | 2228 | if (ndm->ndm_flags & NTF_SELF) { |
| 2229 | if (dev->netdev_ops->ndo_fdb_del) |
| 2230 | err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr); |
| 2231 | else |
| 2232 | err = ndo_dflt_fdb_del(ndm, tb, dev, addr); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2233 | |
John Fastabend | 3ff661c | 2012-04-15 06:44:14 +0000 | [diff] [blame] | 2234 | if (!err) { |
| 2235 | rtnl_fdb_notify(dev, addr, RTM_DELNEIGH); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2236 | ndm->ndm_flags &= ~NTF_SELF; |
John Fastabend | 3ff661c | 2012-04-15 06:44:14 +0000 | [diff] [blame] | 2237 | } |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2238 | } |
| 2239 | out: |
| 2240 | return err; |
| 2241 | } |
| 2242 | |
John Fastabend | d83b060 | 2012-04-15 06:44:08 +0000 | [diff] [blame] | 2243 | static int nlmsg_populate_fdb(struct sk_buff *skb, |
| 2244 | struct netlink_callback *cb, |
| 2245 | struct net_device *dev, |
| 2246 | int *idx, |
| 2247 | struct netdev_hw_addr_list *list) |
| 2248 | { |
| 2249 | struct netdev_hw_addr *ha; |
| 2250 | int err; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2251 | u32 portid, seq; |
John Fastabend | d83b060 | 2012-04-15 06:44:08 +0000 | [diff] [blame] | 2252 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2253 | portid = NETLINK_CB(cb->skb).portid; |
John Fastabend | d83b060 | 2012-04-15 06:44:08 +0000 | [diff] [blame] | 2254 | seq = cb->nlh->nlmsg_seq; |
| 2255 | |
| 2256 | list_for_each_entry(ha, &list->list, list) { |
| 2257 | if (*idx < cb->args[0]) |
| 2258 | goto skip; |
| 2259 | |
| 2260 | err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, |
John Fastabend | a7a558f | 2012-11-01 16:23:10 +0000 | [diff] [blame] | 2261 | portid, seq, |
| 2262 | RTM_NEWNEIGH, NTF_SELF); |
John Fastabend | d83b060 | 2012-04-15 06:44:08 +0000 | [diff] [blame] | 2263 | if (err < 0) |
| 2264 | return err; |
| 2265 | skip: |
| 2266 | *idx += 1; |
| 2267 | } |
| 2268 | return 0; |
| 2269 | } |
| 2270 | |
| 2271 | /** |
Ben Hutchings | 2c53040 | 2012-07-10 10:55:09 +0000 | [diff] [blame] | 2272 | * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. |
John Fastabend | d83b060 | 2012-04-15 06:44:08 +0000 | [diff] [blame] | 2273 | * @nlh: netlink message header |
| 2274 | * @dev: netdevice |
| 2275 | * |
| 2276 | * Default netdevice operation to dump the existing unicast address list. |
John Fastabend | 91f3e7b | 2013-03-29 08:18:37 +0000 | [diff] [blame] | 2277 | * Returns number of addresses from list put in skb. |
John Fastabend | d83b060 | 2012-04-15 06:44:08 +0000 | [diff] [blame] | 2278 | */ |
| 2279 | int ndo_dflt_fdb_dump(struct sk_buff *skb, |
| 2280 | struct netlink_callback *cb, |
| 2281 | struct net_device *dev, |
| 2282 | int idx) |
| 2283 | { |
| 2284 | int err; |
| 2285 | |
| 2286 | netif_addr_lock_bh(dev); |
| 2287 | err = nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->uc); |
| 2288 | if (err) |
| 2289 | goto out; |
| 2290 | nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->mc); |
| 2291 | out: |
| 2292 | netif_addr_unlock_bh(dev); |
| 2293 | return idx; |
| 2294 | } |
| 2295 | EXPORT_SYMBOL(ndo_dflt_fdb_dump); |
| 2296 | |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2297 | static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 2298 | { |
| 2299 | int idx = 0; |
| 2300 | struct net *net = sock_net(skb->sk); |
| 2301 | struct net_device *dev; |
| 2302 | |
| 2303 | rcu_read_lock(); |
| 2304 | for_each_netdev_rcu(net, dev) { |
| 2305 | if (dev->priv_flags & IFF_BRIDGE_PORT) { |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2306 | struct net_device *br_dev; |
| 2307 | const struct net_device_ops *ops; |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2308 | |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2309 | br_dev = netdev_master_upper_dev_get(dev); |
| 2310 | ops = br_dev->netdev_ops; |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2311 | if (ops->ndo_fdb_dump) |
| 2312 | idx = ops->ndo_fdb_dump(skb, cb, dev, idx); |
| 2313 | } |
| 2314 | |
| 2315 | if (dev->netdev_ops->ndo_fdb_dump) |
| 2316 | idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, idx); |
Vlad Yasevich | 090096b | 2013-03-06 15:39:42 +0000 | [diff] [blame] | 2317 | else |
John Fastabend | 91f3e7b | 2013-03-29 08:18:37 +0000 | [diff] [blame] | 2318 | idx = ndo_dflt_fdb_dump(skb, cb, dev, idx); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2319 | } |
| 2320 | rcu_read_unlock(); |
| 2321 | |
| 2322 | cb->args[0] = idx; |
| 2323 | return skb->len; |
| 2324 | } |
| 2325 | |
John Fastabend | 815cccb | 2012-10-24 08:13:09 +0000 | [diff] [blame] | 2326 | int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
| 2327 | struct net_device *dev, u16 mode) |
| 2328 | { |
| 2329 | struct nlmsghdr *nlh; |
| 2330 | struct ifinfomsg *ifm; |
| 2331 | struct nlattr *br_afspec; |
| 2332 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2333 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
John Fastabend | 815cccb | 2012-10-24 08:13:09 +0000 | [diff] [blame] | 2334 | |
| 2335 | nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), NLM_F_MULTI); |
| 2336 | if (nlh == NULL) |
| 2337 | return -EMSGSIZE; |
| 2338 | |
| 2339 | ifm = nlmsg_data(nlh); |
| 2340 | ifm->ifi_family = AF_BRIDGE; |
| 2341 | ifm->__ifi_pad = 0; |
| 2342 | ifm->ifi_type = dev->type; |
| 2343 | ifm->ifi_index = dev->ifindex; |
| 2344 | ifm->ifi_flags = dev_get_flags(dev); |
| 2345 | ifm->ifi_change = 0; |
| 2346 | |
| 2347 | |
| 2348 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
| 2349 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || |
| 2350 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2351 | (br_dev && |
| 2352 | nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) || |
John Fastabend | 815cccb | 2012-10-24 08:13:09 +0000 | [diff] [blame] | 2353 | (dev->addr_len && |
| 2354 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || |
| 2355 | (dev->ifindex != dev->iflink && |
| 2356 | nla_put_u32(skb, IFLA_LINK, dev->iflink))) |
| 2357 | goto nla_put_failure; |
| 2358 | |
| 2359 | br_afspec = nla_nest_start(skb, IFLA_AF_SPEC); |
| 2360 | if (!br_afspec) |
| 2361 | goto nla_put_failure; |
| 2362 | |
| 2363 | if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF) || |
| 2364 | nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) { |
| 2365 | nla_nest_cancel(skb, br_afspec); |
| 2366 | goto nla_put_failure; |
| 2367 | } |
| 2368 | nla_nest_end(skb, br_afspec); |
| 2369 | |
| 2370 | return nlmsg_end(skb, nlh); |
| 2371 | nla_put_failure: |
| 2372 | nlmsg_cancel(skb, nlh); |
| 2373 | return -EMSGSIZE; |
| 2374 | } |
| 2375 | EXPORT_SYMBOL(ndo_dflt_bridge_getlink); |
| 2376 | |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2377 | static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb) |
| 2378 | { |
| 2379 | struct net *net = sock_net(skb->sk); |
| 2380 | struct net_device *dev; |
| 2381 | int idx = 0; |
| 2382 | u32 portid = NETLINK_CB(cb->skb).portid; |
| 2383 | u32 seq = cb->nlh->nlmsg_seq; |
Vlad Yasevich | 6cbdcee | 2013-02-13 12:00:13 +0000 | [diff] [blame] | 2384 | struct nlattr *extfilt; |
| 2385 | u32 filter_mask = 0; |
| 2386 | |
| 2387 | extfilt = nlmsg_find_attr(cb->nlh, sizeof(struct rtgenmsg), |
| 2388 | IFLA_EXT_MASK); |
| 2389 | if (extfilt) |
| 2390 | filter_mask = nla_get_u32(extfilt); |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2391 | |
| 2392 | rcu_read_lock(); |
| 2393 | for_each_netdev_rcu(net, dev) { |
| 2394 | const struct net_device_ops *ops = dev->netdev_ops; |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2395 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2396 | |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2397 | if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
Ben Hutchings | 25b1e67 | 2012-11-02 12:56:52 +0000 | [diff] [blame] | 2398 | if (idx >= cb->args[0] && |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2399 | br_dev->netdev_ops->ndo_bridge_getlink( |
Vlad Yasevich | 6cbdcee | 2013-02-13 12:00:13 +0000 | [diff] [blame] | 2400 | skb, portid, seq, dev, filter_mask) < 0) |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2401 | break; |
Ben Hutchings | 25b1e67 | 2012-11-02 12:56:52 +0000 | [diff] [blame] | 2402 | idx++; |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2403 | } |
| 2404 | |
| 2405 | if (ops->ndo_bridge_getlink) { |
Ben Hutchings | 25b1e67 | 2012-11-02 12:56:52 +0000 | [diff] [blame] | 2406 | if (idx >= cb->args[0] && |
Vlad Yasevich | 6cbdcee | 2013-02-13 12:00:13 +0000 | [diff] [blame] | 2407 | ops->ndo_bridge_getlink(skb, portid, seq, dev, |
| 2408 | filter_mask) < 0) |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2409 | break; |
Ben Hutchings | 25b1e67 | 2012-11-02 12:56:52 +0000 | [diff] [blame] | 2410 | idx++; |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2411 | } |
| 2412 | } |
| 2413 | rcu_read_unlock(); |
| 2414 | cb->args[0] = idx; |
| 2415 | |
| 2416 | return skb->len; |
| 2417 | } |
| 2418 | |
John Fastabend | 2469ffd | 2012-10-24 08:13:03 +0000 | [diff] [blame] | 2419 | static inline size_t bridge_nlmsg_size(void) |
| 2420 | { |
| 2421 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) |
| 2422 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ |
| 2423 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
| 2424 | + nla_total_size(sizeof(u32)) /* IFLA_MASTER */ |
| 2425 | + nla_total_size(sizeof(u32)) /* IFLA_MTU */ |
| 2426 | + nla_total_size(sizeof(u32)) /* IFLA_LINK */ |
| 2427 | + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */ |
| 2428 | + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */ |
| 2429 | + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */ |
| 2430 | + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */ |
| 2431 | + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ |
| 2432 | } |
| 2433 | |
| 2434 | static int rtnl_bridge_notify(struct net_device *dev, u16 flags) |
| 2435 | { |
| 2436 | struct net *net = dev_net(dev); |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2437 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
John Fastabend | 2469ffd | 2012-10-24 08:13:03 +0000 | [diff] [blame] | 2438 | struct sk_buff *skb; |
| 2439 | int err = -EOPNOTSUPP; |
| 2440 | |
| 2441 | skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); |
| 2442 | if (!skb) { |
| 2443 | err = -ENOMEM; |
| 2444 | goto errout; |
| 2445 | } |
| 2446 | |
John Fastabend | c38e01b | 2012-11-02 16:32:36 +0000 | [diff] [blame] | 2447 | if ((!flags || (flags & BRIDGE_FLAGS_MASTER)) && |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2448 | br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
Vlad Yasevich | 6cbdcee | 2013-02-13 12:00:13 +0000 | [diff] [blame] | 2449 | err = br_dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); |
John Fastabend | c38e01b | 2012-11-02 16:32:36 +0000 | [diff] [blame] | 2450 | if (err < 0) |
| 2451 | goto errout; |
| 2452 | } |
John Fastabend | 2469ffd | 2012-10-24 08:13:03 +0000 | [diff] [blame] | 2453 | |
John Fastabend | c38e01b | 2012-11-02 16:32:36 +0000 | [diff] [blame] | 2454 | if ((flags & BRIDGE_FLAGS_SELF) && |
| 2455 | dev->netdev_ops->ndo_bridge_getlink) { |
Vlad Yasevich | 6cbdcee | 2013-02-13 12:00:13 +0000 | [diff] [blame] | 2456 | err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); |
John Fastabend | c38e01b | 2012-11-02 16:32:36 +0000 | [diff] [blame] | 2457 | if (err < 0) |
| 2458 | goto errout; |
| 2459 | } |
John Fastabend | 2469ffd | 2012-10-24 08:13:03 +0000 | [diff] [blame] | 2460 | |
| 2461 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
| 2462 | return 0; |
| 2463 | errout: |
| 2464 | WARN_ON(err == -EMSGSIZE); |
| 2465 | kfree_skb(skb); |
| 2466 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
| 2467 | return err; |
| 2468 | } |
| 2469 | |
Thomas Graf | 661d296 | 2013-03-21 07:45:29 +0000 | [diff] [blame] | 2470 | static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2471 | { |
| 2472 | struct net *net = sock_net(skb->sk); |
| 2473 | struct ifinfomsg *ifm; |
| 2474 | struct net_device *dev; |
John Fastabend | 2469ffd | 2012-10-24 08:13:03 +0000 | [diff] [blame] | 2475 | struct nlattr *br_spec, *attr = NULL; |
| 2476 | int rem, err = -EOPNOTSUPP; |
John Fastabend | c38e01b | 2012-11-02 16:32:36 +0000 | [diff] [blame] | 2477 | u16 oflags, flags = 0; |
| 2478 | bool have_flags = false; |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2479 | |
| 2480 | if (nlmsg_len(nlh) < sizeof(*ifm)) |
| 2481 | return -EINVAL; |
| 2482 | |
| 2483 | ifm = nlmsg_data(nlh); |
| 2484 | if (ifm->ifi_family != AF_BRIDGE) |
| 2485 | return -EPFNOSUPPORT; |
| 2486 | |
| 2487 | dev = __dev_get_by_index(net, ifm->ifi_index); |
| 2488 | if (!dev) { |
| 2489 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); |
| 2490 | return -ENODEV; |
| 2491 | } |
| 2492 | |
John Fastabend | 2469ffd | 2012-10-24 08:13:03 +0000 | [diff] [blame] | 2493 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
| 2494 | if (br_spec) { |
| 2495 | nla_for_each_nested(attr, br_spec, rem) { |
| 2496 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { |
John Fastabend | c38e01b | 2012-11-02 16:32:36 +0000 | [diff] [blame] | 2497 | have_flags = true; |
John Fastabend | 2469ffd | 2012-10-24 08:13:03 +0000 | [diff] [blame] | 2498 | flags = nla_get_u16(attr); |
| 2499 | break; |
| 2500 | } |
| 2501 | } |
| 2502 | } |
| 2503 | |
John Fastabend | c38e01b | 2012-11-02 16:32:36 +0000 | [diff] [blame] | 2504 | oflags = flags; |
| 2505 | |
John Fastabend | 2469ffd | 2012-10-24 08:13:03 +0000 | [diff] [blame] | 2506 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2507 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
| 2508 | |
| 2509 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) { |
John Fastabend | 2469ffd | 2012-10-24 08:13:03 +0000 | [diff] [blame] | 2510 | err = -EOPNOTSUPP; |
| 2511 | goto out; |
| 2512 | } |
| 2513 | |
Jiri Pirko | 898e506 | 2013-01-03 22:48:52 +0000 | [diff] [blame] | 2514 | err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh); |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2515 | if (err) |
| 2516 | goto out; |
John Fastabend | 2469ffd | 2012-10-24 08:13:03 +0000 | [diff] [blame] | 2517 | |
| 2518 | flags &= ~BRIDGE_FLAGS_MASTER; |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2519 | } |
| 2520 | |
John Fastabend | 2469ffd | 2012-10-24 08:13:03 +0000 | [diff] [blame] | 2521 | if ((flags & BRIDGE_FLAGS_SELF)) { |
| 2522 | if (!dev->netdev_ops->ndo_bridge_setlink) |
| 2523 | err = -EOPNOTSUPP; |
| 2524 | else |
| 2525 | err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh); |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2526 | |
John Fastabend | 2469ffd | 2012-10-24 08:13:03 +0000 | [diff] [blame] | 2527 | if (!err) |
| 2528 | flags &= ~BRIDGE_FLAGS_SELF; |
| 2529 | } |
| 2530 | |
John Fastabend | c38e01b | 2012-11-02 16:32:36 +0000 | [diff] [blame] | 2531 | if (have_flags) |
John Fastabend | 2469ffd | 2012-10-24 08:13:03 +0000 | [diff] [blame] | 2532 | memcpy(nla_data(attr), &flags, sizeof(flags)); |
| 2533 | /* Generate event to notify upper layer of bridge change */ |
| 2534 | if (!err) |
John Fastabend | c38e01b | 2012-11-02 16:32:36 +0000 | [diff] [blame] | 2535 | err = rtnl_bridge_notify(dev, oflags); |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2536 | out: |
| 2537 | return err; |
| 2538 | } |
| 2539 | |
Thomas Graf | 661d296 | 2013-03-21 07:45:29 +0000 | [diff] [blame] | 2540 | static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
Vlad Yasevich | 407af32 | 2013-02-13 12:00:12 +0000 | [diff] [blame] | 2541 | { |
| 2542 | struct net *net = sock_net(skb->sk); |
| 2543 | struct ifinfomsg *ifm; |
| 2544 | struct net_device *dev; |
| 2545 | struct nlattr *br_spec, *attr = NULL; |
| 2546 | int rem, err = -EOPNOTSUPP; |
| 2547 | u16 oflags, flags = 0; |
| 2548 | bool have_flags = false; |
| 2549 | |
| 2550 | if (nlmsg_len(nlh) < sizeof(*ifm)) |
| 2551 | return -EINVAL; |
| 2552 | |
| 2553 | ifm = nlmsg_data(nlh); |
| 2554 | if (ifm->ifi_family != AF_BRIDGE) |
| 2555 | return -EPFNOSUPPORT; |
| 2556 | |
| 2557 | dev = __dev_get_by_index(net, ifm->ifi_index); |
| 2558 | if (!dev) { |
| 2559 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); |
| 2560 | return -ENODEV; |
| 2561 | } |
| 2562 | |
| 2563 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
| 2564 | if (br_spec) { |
| 2565 | nla_for_each_nested(attr, br_spec, rem) { |
| 2566 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { |
| 2567 | have_flags = true; |
| 2568 | flags = nla_get_u16(attr); |
| 2569 | break; |
| 2570 | } |
| 2571 | } |
| 2572 | } |
| 2573 | |
| 2574 | oflags = flags; |
| 2575 | |
| 2576 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { |
| 2577 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
| 2578 | |
| 2579 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) { |
| 2580 | err = -EOPNOTSUPP; |
| 2581 | goto out; |
| 2582 | } |
| 2583 | |
| 2584 | err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh); |
| 2585 | if (err) |
| 2586 | goto out; |
| 2587 | |
| 2588 | flags &= ~BRIDGE_FLAGS_MASTER; |
| 2589 | } |
| 2590 | |
| 2591 | if ((flags & BRIDGE_FLAGS_SELF)) { |
| 2592 | if (!dev->netdev_ops->ndo_bridge_dellink) |
| 2593 | err = -EOPNOTSUPP; |
| 2594 | else |
| 2595 | err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh); |
| 2596 | |
| 2597 | if (!err) |
| 2598 | flags &= ~BRIDGE_FLAGS_SELF; |
| 2599 | } |
| 2600 | |
| 2601 | if (have_flags) |
| 2602 | memcpy(nla_data(attr), &flags, sizeof(flags)); |
| 2603 | /* Generate event to notify upper layer of bridge change */ |
| 2604 | if (!err) |
| 2605 | err = rtnl_bridge_notify(dev, oflags); |
| 2606 | out: |
| 2607 | return err; |
| 2608 | } |
| 2609 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2610 | /* Process one rtnetlink message. */ |
| 2611 | |
Thomas Graf | 1d00a4e | 2007-03-22 23:30:12 -0700 | [diff] [blame] | 2612 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2613 | { |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 2614 | struct net *net = sock_net(skb->sk); |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 2615 | rtnl_doit_func doit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2616 | int sz_idx, kind; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2617 | int family; |
| 2618 | int type; |
Eric Dumazet | 2907c35 | 2011-05-25 07:34:04 +0000 | [diff] [blame] | 2619 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2620 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2621 | type = nlh->nlmsg_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2622 | if (type > RTM_MAX) |
Thomas Graf | 038890f | 2007-04-05 14:35:52 -0700 | [diff] [blame] | 2623 | return -EOPNOTSUPP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2624 | |
| 2625 | type -= RTM_BASE; |
| 2626 | |
| 2627 | /* All the messages must have at least 1 byte length */ |
Hong zhi guo | 573ce26 | 2013-03-27 06:47:04 +0000 | [diff] [blame] | 2628 | if (nlmsg_len(nlh) < sizeof(struct rtgenmsg)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2629 | return 0; |
| 2630 | |
Hong zhi guo | 573ce26 | 2013-03-27 06:47:04 +0000 | [diff] [blame] | 2631 | family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2632 | sz_idx = type>>2; |
| 2633 | kind = type&3; |
| 2634 | |
Eric W. Biederman | dfc47ef | 2012-11-16 03:03:00 +0000 | [diff] [blame] | 2635 | if (kind != 2 && !ns_capable(net->user_ns, CAP_NET_ADMIN)) |
Thomas Graf | 1d00a4e | 2007-03-22 23:30:12 -0700 | [diff] [blame] | 2636 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2637 | |
David S. Miller | b8f3ab4 | 2011-01-18 12:40:38 -0800 | [diff] [blame] | 2638 | if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 2639 | struct sock *rtnl; |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 2640 | rtnl_dumpit_func dumpit; |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 2641 | rtnl_calcit_func calcit; |
| 2642 | u16 min_dump_alloc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2643 | |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 2644 | dumpit = rtnl_get_dumpit(family, type); |
| 2645 | if (dumpit == NULL) |
Thomas Graf | 038890f | 2007-04-05 14:35:52 -0700 | [diff] [blame] | 2646 | return -EOPNOTSUPP; |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 2647 | calcit = rtnl_get_calcit(family, type); |
| 2648 | if (calcit) |
Greg Rose | 115c9b8 | 2012-02-21 16:54:48 -0500 | [diff] [blame] | 2649 | min_dump_alloc = calcit(skb, nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2650 | |
Eric Dumazet | 2907c35 | 2011-05-25 07:34:04 +0000 | [diff] [blame] | 2651 | __rtnl_unlock(); |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 2652 | rtnl = net->rtnl; |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 2653 | { |
| 2654 | struct netlink_dump_control c = { |
| 2655 | .dump = dumpit, |
| 2656 | .min_dump_alloc = min_dump_alloc, |
| 2657 | }; |
| 2658 | err = netlink_dump_start(rtnl, skb, nlh, &c); |
| 2659 | } |
Eric Dumazet | 2907c35 | 2011-05-25 07:34:04 +0000 | [diff] [blame] | 2660 | rtnl_lock(); |
| 2661 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2662 | } |
| 2663 | |
Thomas Graf | e284986 | 2007-03-22 11:48:11 -0700 | [diff] [blame] | 2664 | doit = rtnl_get_doit(family, type); |
| 2665 | if (doit == NULL) |
Thomas Graf | 038890f | 2007-04-05 14:35:52 -0700 | [diff] [blame] | 2666 | return -EOPNOTSUPP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2667 | |
Thomas Graf | 661d296 | 2013-03-21 07:45:29 +0000 | [diff] [blame] | 2668 | return doit(skb, nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2669 | } |
| 2670 | |
Denis V. Lunev | cd40b7d | 2007-10-10 21:15:29 -0700 | [diff] [blame] | 2671 | static void rtnetlink_rcv(struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2672 | { |
Denis V. Lunev | cd40b7d | 2007-10-10 21:15:29 -0700 | [diff] [blame] | 2673 | rtnl_lock(); |
| 2674 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); |
| 2675 | rtnl_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2676 | } |
| 2677 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2678 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
| 2679 | { |
Jiri Pirko | 351638e | 2013-05-28 01:30:21 +0000 | [diff] [blame] | 2680 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
Eric W. Biederman | e9dc865 | 2007-09-12 13:02:17 +0200 | [diff] [blame] | 2681 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2682 | switch (event) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2683 | case NETDEV_UP: |
| 2684 | case NETDEV_DOWN: |
Patrick McHardy | 10de05a | 2010-02-26 06:34:50 +0000 | [diff] [blame] | 2685 | case NETDEV_PRE_UP: |
Eric W. Biederman | d90a909 | 2009-12-12 22:11:15 +0000 | [diff] [blame] | 2686 | case NETDEV_POST_INIT: |
| 2687 | case NETDEV_REGISTER: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2688 | case NETDEV_CHANGE: |
Patrick McHardy | 755d0e7 | 2010-03-19 04:42:24 +0000 | [diff] [blame] | 2689 | case NETDEV_PRE_TYPE_CHANGE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2690 | case NETDEV_GOING_DOWN: |
Patrick McHardy | a283576 | 2010-02-26 06:34:51 +0000 | [diff] [blame] | 2691 | case NETDEV_UNREGISTER: |
Eric Dumazet | 0115e8e | 2012-08-22 17:19:46 +0000 | [diff] [blame] | 2692 | case NETDEV_UNREGISTER_FINAL: |
Amerigo Wang | ac3d3f8 | 2011-05-19 23:06:32 +0000 | [diff] [blame] | 2693 | case NETDEV_RELEASE: |
| 2694 | case NETDEV_JOIN: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2695 | break; |
| 2696 | default: |
| 2697 | rtmsg_ifinfo(RTM_NEWLINK, dev, 0); |
| 2698 | break; |
| 2699 | } |
| 2700 | return NOTIFY_DONE; |
| 2701 | } |
| 2702 | |
| 2703 | static struct notifier_block rtnetlink_dev_notifier = { |
| 2704 | .notifier_call = rtnetlink_event, |
| 2705 | }; |
| 2706 | |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 2707 | |
Alexey Dobriyan | 2c8c1e7 | 2010-01-17 03:35:32 +0000 | [diff] [blame] | 2708 | static int __net_init rtnetlink_net_init(struct net *net) |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 2709 | { |
| 2710 | struct sock *sk; |
Pablo Neira Ayuso | a31f2d1 | 2012-06-29 06:15:21 +0000 | [diff] [blame] | 2711 | struct netlink_kernel_cfg cfg = { |
| 2712 | .groups = RTNLGRP_MAX, |
| 2713 | .input = rtnetlink_rcv, |
| 2714 | .cb_mutex = &rtnl_mutex, |
Pablo Neira Ayuso | 9785e10 | 2012-09-08 02:53:53 +0000 | [diff] [blame] | 2715 | .flags = NL_CFG_F_NONROOT_RECV, |
Pablo Neira Ayuso | a31f2d1 | 2012-06-29 06:15:21 +0000 | [diff] [blame] | 2716 | }; |
| 2717 | |
Pablo Neira Ayuso | 9f00d97 | 2012-09-08 02:53:54 +0000 | [diff] [blame] | 2718 | sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 2719 | if (!sk) |
| 2720 | return -ENOMEM; |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 2721 | net->rtnl = sk; |
| 2722 | return 0; |
| 2723 | } |
| 2724 | |
Alexey Dobriyan | 2c8c1e7 | 2010-01-17 03:35:32 +0000 | [diff] [blame] | 2725 | static void __net_exit rtnetlink_net_exit(struct net *net) |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 2726 | { |
Denis V. Lunev | 775516b | 2008-01-18 23:55:19 -0800 | [diff] [blame] | 2727 | netlink_kernel_release(net->rtnl); |
| 2728 | net->rtnl = NULL; |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 2729 | } |
| 2730 | |
| 2731 | static struct pernet_operations rtnetlink_net_ops = { |
| 2732 | .init = rtnetlink_net_init, |
| 2733 | .exit = rtnetlink_net_exit, |
| 2734 | }; |
| 2735 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2736 | void __init rtnetlink_init(void) |
| 2737 | { |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 2738 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2739 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 2740 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2741 | register_netdevice_notifier(&rtnetlink_dev_notifier); |
Thomas Graf | 340d17f | 2007-03-22 11:49:22 -0700 | [diff] [blame] | 2742 | |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 2743 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, |
| 2744 | rtnl_dump_ifinfo, rtnl_calcit); |
| 2745 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, NULL); |
| 2746 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, NULL); |
| 2747 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, NULL); |
Thomas Graf | 687ad8c | 2007-03-22 11:59:42 -0700 | [diff] [blame] | 2748 | |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 2749 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, NULL); |
| 2750 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, NULL); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 2751 | |
| 2752 | rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL); |
| 2753 | rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL); |
| 2754 | rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL); |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2755 | |
| 2756 | rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL); |
Vlad Yasevich | 407af32 | 2013-02-13 12:00:12 +0000 | [diff] [blame] | 2757 | rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, NULL); |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 2758 | rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2759 | } |
| 2760 | |