Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2014 Mahesh Bandewar <maheshb@google.com> |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or |
| 4 | * modify it under the terms of the GNU General Public License as |
| 5 | * published by the Free Software Foundation; either version 2 of |
| 6 | * the License, or (at your option) any later version. |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | #include "ipvlan.h" |
| 11 | |
Mahesh Bandewar | ab5b701 | 2016-02-20 19:31:41 -0800 | [diff] [blame] | 12 | static void ipvlan_adjust_mtu(struct ipvl_dev *ipvlan, struct net_device *dev) |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 13 | { |
| 14 | ipvlan->dev->mtu = dev->mtu - ipvlan->mtu_adj; |
| 15 | } |
| 16 | |
Mahesh Bandewar | e93fbc5 | 2016-02-20 19:31:36 -0800 | [diff] [blame] | 17 | static void ipvlan_set_port_mode(struct ipvl_port *port, u16 nval) |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 18 | { |
| 19 | struct ipvl_dev *ipvlan; |
| 20 | |
| 21 | if (port->mode != nval) { |
| 22 | list_for_each_entry(ipvlan, &port->ipvlans, pnode) { |
| 23 | if (nval == IPVLAN_MODE_L3) |
| 24 | ipvlan->dev->flags |= IFF_NOARP; |
| 25 | else |
| 26 | ipvlan->dev->flags &= ~IFF_NOARP; |
| 27 | } |
| 28 | port->mode = nval; |
| 29 | } |
| 30 | } |
| 31 | |
| 32 | static int ipvlan_port_create(struct net_device *dev) |
| 33 | { |
| 34 | struct ipvl_port *port; |
| 35 | int err, idx; |
| 36 | |
| 37 | if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) { |
| 38 | netdev_err(dev, "Master is either lo or non-ether device\n"); |
| 39 | return -EINVAL; |
| 40 | } |
Mahesh Bandewar | 764e433 | 2014-12-06 15:53:19 -0800 | [diff] [blame] | 41 | |
| 42 | if (netif_is_macvlan_port(dev)) { |
| 43 | netdev_err(dev, "Master is a macvlan port.\n"); |
| 44 | return -EBUSY; |
| 45 | } |
| 46 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 47 | port = kzalloc(sizeof(struct ipvl_port), GFP_KERNEL); |
| 48 | if (!port) |
| 49 | return -ENOMEM; |
| 50 | |
| 51 | port->dev = dev; |
| 52 | port->mode = IPVLAN_MODE_L3; |
| 53 | INIT_LIST_HEAD(&port->ipvlans); |
| 54 | for (idx = 0; idx < IPVLAN_HASH_SIZE; idx++) |
| 55 | INIT_HLIST_HEAD(&port->hlhead[idx]); |
| 56 | |
Mahesh Bandewar | ba35f85 | 2015-05-04 17:06:03 -0700 | [diff] [blame] | 57 | skb_queue_head_init(&port->backlog); |
| 58 | INIT_WORK(&port->wq, ipvlan_process_multicast); |
| 59 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 60 | err = netdev_rx_handler_register(dev, ipvlan_handle_frame, port); |
| 61 | if (err) |
| 62 | goto err; |
| 63 | |
| 64 | dev->priv_flags |= IFF_IPVLAN_MASTER; |
| 65 | return 0; |
| 66 | |
| 67 | err: |
| 68 | kfree_rcu(port, rcu); |
| 69 | return err; |
| 70 | } |
| 71 | |
| 72 | static void ipvlan_port_destroy(struct net_device *dev) |
| 73 | { |
| 74 | struct ipvl_port *port = ipvlan_port_get_rtnl(dev); |
| 75 | |
| 76 | dev->priv_flags &= ~IFF_IPVLAN_MASTER; |
| 77 | netdev_rx_handler_unregister(dev); |
Mahesh Bandewar | ba35f85 | 2015-05-04 17:06:03 -0700 | [diff] [blame] | 78 | cancel_work_sync(&port->wq); |
| 79 | __skb_queue_purge(&port->backlog); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 80 | kfree_rcu(port, rcu); |
| 81 | } |
| 82 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 83 | #define IPVLAN_FEATURES \ |
Tom Herbert | a188222 | 2015-12-14 11:19:43 -0800 | [diff] [blame] | 84 | (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 85 | NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ |
| 86 | NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ |
| 87 | NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER) |
| 88 | |
| 89 | #define IPVLAN_STATE_MASK \ |
| 90 | ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) |
| 91 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 92 | static int ipvlan_init(struct net_device *dev) |
| 93 | { |
| 94 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 95 | const struct net_device *phy_dev = ipvlan->phy_dev; |
Mahesh Bandewar | 494e848 | 2016-04-27 14:59:27 -0700 | [diff] [blame] | 96 | struct ipvl_port *port = ipvlan->port; |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 97 | |
| 98 | dev->state = (dev->state & ~IPVLAN_STATE_MASK) | |
| 99 | (phy_dev->state & IPVLAN_STATE_MASK); |
| 100 | dev->features = phy_dev->features & IPVLAN_FEATURES; |
| 101 | dev->features |= NETIF_F_LLTX; |
| 102 | dev->gso_max_size = phy_dev->gso_max_size; |
Eric Dumazet | f6773c5 | 2016-03-16 21:59:49 -0700 | [diff] [blame] | 103 | dev->gso_max_segs = phy_dev->gso_max_segs; |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 104 | dev->hard_header_len = phy_dev->hard_header_len; |
| 105 | |
Eric Dumazet | 0d7dd79 | 2016-06-09 07:45:15 -0700 | [diff] [blame] | 106 | netdev_lockdep_set_classes(dev); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 107 | |
| 108 | ipvlan->pcpu_stats = alloc_percpu(struct ipvl_pcpu_stats); |
| 109 | if (!ipvlan->pcpu_stats) |
| 110 | return -ENOMEM; |
| 111 | |
Mahesh Bandewar | 494e848 | 2016-04-27 14:59:27 -0700 | [diff] [blame] | 112 | port->count += 1; |
| 113 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 114 | return 0; |
| 115 | } |
| 116 | |
| 117 | static void ipvlan_uninit(struct net_device *dev) |
| 118 | { |
| 119 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 120 | struct ipvl_port *port = ipvlan->port; |
| 121 | |
Markus Elfring | 04901ce | 2014-11-29 16:23:20 +0100 | [diff] [blame] | 122 | free_percpu(ipvlan->pcpu_stats); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 123 | |
| 124 | port->count -= 1; |
| 125 | if (!port->count) |
| 126 | ipvlan_port_destroy(port->dev); |
| 127 | } |
| 128 | |
| 129 | static int ipvlan_open(struct net_device *dev) |
| 130 | { |
| 131 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 132 | struct net_device *phy_dev = ipvlan->phy_dev; |
| 133 | struct ipvl_addr *addr; |
| 134 | |
| 135 | if (ipvlan->port->mode == IPVLAN_MODE_L3) |
| 136 | dev->flags |= IFF_NOARP; |
| 137 | else |
| 138 | dev->flags &= ~IFF_NOARP; |
| 139 | |
Konstantin Khlebnikov | 515866f | 2015-07-14 16:35:50 +0300 | [diff] [blame] | 140 | list_for_each_entry(addr, &ipvlan->addrs, anode) |
| 141 | ipvlan_ht_addr_add(ipvlan, addr); |
| 142 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 143 | return dev_uc_add(phy_dev, phy_dev->dev_addr); |
| 144 | } |
| 145 | |
| 146 | static int ipvlan_stop(struct net_device *dev) |
| 147 | { |
| 148 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 149 | struct net_device *phy_dev = ipvlan->phy_dev; |
| 150 | struct ipvl_addr *addr; |
| 151 | |
| 152 | dev_uc_unsync(phy_dev, dev); |
| 153 | dev_mc_unsync(phy_dev, dev); |
| 154 | |
| 155 | dev_uc_del(phy_dev, phy_dev->dev_addr); |
| 156 | |
Konstantin Khlebnikov | 515866f | 2015-07-14 16:35:50 +0300 | [diff] [blame] | 157 | list_for_each_entry(addr, &ipvlan->addrs, anode) |
Konstantin Khlebnikov | 6640e67 | 2015-07-14 16:35:53 +0300 | [diff] [blame] | 158 | ipvlan_ht_addr_del(addr); |
Konstantin Khlebnikov | 515866f | 2015-07-14 16:35:50 +0300 | [diff] [blame] | 159 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 160 | return 0; |
| 161 | } |
| 162 | |
Mahesh Bandewar | 92c7b0d | 2014-11-25 21:24:43 -0800 | [diff] [blame] | 163 | static netdev_tx_t ipvlan_start_xmit(struct sk_buff *skb, |
| 164 | struct net_device *dev) |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 165 | { |
| 166 | const struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 167 | int skblen = skb->len; |
| 168 | int ret; |
| 169 | |
| 170 | ret = ipvlan_queue_xmit(skb, dev); |
| 171 | if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { |
| 172 | struct ipvl_pcpu_stats *pcptr; |
| 173 | |
| 174 | pcptr = this_cpu_ptr(ipvlan->pcpu_stats); |
| 175 | |
| 176 | u64_stats_update_begin(&pcptr->syncp); |
| 177 | pcptr->tx_pkts++; |
| 178 | pcptr->tx_bytes += skblen; |
| 179 | u64_stats_update_end(&pcptr->syncp); |
| 180 | } else { |
| 181 | this_cpu_inc(ipvlan->pcpu_stats->tx_drps); |
| 182 | } |
| 183 | return ret; |
| 184 | } |
| 185 | |
| 186 | static netdev_features_t ipvlan_fix_features(struct net_device *dev, |
| 187 | netdev_features_t features) |
| 188 | { |
| 189 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 190 | |
| 191 | return features & (ipvlan->sfeatures | ~IPVLAN_FEATURES); |
| 192 | } |
| 193 | |
| 194 | static void ipvlan_change_rx_flags(struct net_device *dev, int change) |
| 195 | { |
| 196 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 197 | struct net_device *phy_dev = ipvlan->phy_dev; |
| 198 | |
| 199 | if (change & IFF_ALLMULTI) |
| 200 | dev_set_allmulti(phy_dev, dev->flags & IFF_ALLMULTI? 1 : -1); |
| 201 | } |
| 202 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 203 | static void ipvlan_set_multicast_mac_filter(struct net_device *dev) |
| 204 | { |
| 205 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 206 | |
| 207 | if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { |
| 208 | bitmap_fill(ipvlan->mac_filters, IPVLAN_MAC_FILTER_SIZE); |
| 209 | } else { |
| 210 | struct netdev_hw_addr *ha; |
| 211 | DECLARE_BITMAP(mc_filters, IPVLAN_MAC_FILTER_SIZE); |
| 212 | |
| 213 | bitmap_zero(mc_filters, IPVLAN_MAC_FILTER_SIZE); |
| 214 | netdev_for_each_mc_addr(ha, dev) |
| 215 | __set_bit(ipvlan_mac_hash(ha->addr), mc_filters); |
| 216 | |
Mahesh Bandewar | f631c44 | 2015-05-04 17:06:11 -0700 | [diff] [blame] | 217 | /* Turn-on broadcast bit irrespective of address family, |
| 218 | * since broadcast is deferred to a work-queue, hence no |
| 219 | * impact on fast-path processing. |
| 220 | */ |
| 221 | __set_bit(ipvlan_mac_hash(dev->broadcast), mc_filters); |
| 222 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 223 | bitmap_copy(ipvlan->mac_filters, mc_filters, |
| 224 | IPVLAN_MAC_FILTER_SIZE); |
| 225 | } |
| 226 | dev_uc_sync(ipvlan->phy_dev, dev); |
| 227 | dev_mc_sync(ipvlan->phy_dev, dev); |
| 228 | } |
| 229 | |
| 230 | static struct rtnl_link_stats64 *ipvlan_get_stats64(struct net_device *dev, |
| 231 | struct rtnl_link_stats64 *s) |
| 232 | { |
| 233 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 234 | |
| 235 | if (ipvlan->pcpu_stats) { |
| 236 | struct ipvl_pcpu_stats *pcptr; |
| 237 | u64 rx_pkts, rx_bytes, rx_mcast, tx_pkts, tx_bytes; |
| 238 | u32 rx_errs = 0, tx_drps = 0; |
| 239 | u32 strt; |
| 240 | int idx; |
| 241 | |
| 242 | for_each_possible_cpu(idx) { |
| 243 | pcptr = per_cpu_ptr(ipvlan->pcpu_stats, idx); |
| 244 | do { |
| 245 | strt= u64_stats_fetch_begin_irq(&pcptr->syncp); |
| 246 | rx_pkts = pcptr->rx_pkts; |
| 247 | rx_bytes = pcptr->rx_bytes; |
| 248 | rx_mcast = pcptr->rx_mcast; |
| 249 | tx_pkts = pcptr->tx_pkts; |
| 250 | tx_bytes = pcptr->tx_bytes; |
| 251 | } while (u64_stats_fetch_retry_irq(&pcptr->syncp, |
| 252 | strt)); |
| 253 | |
| 254 | s->rx_packets += rx_pkts; |
| 255 | s->rx_bytes += rx_bytes; |
| 256 | s->multicast += rx_mcast; |
| 257 | s->tx_packets += tx_pkts; |
| 258 | s->tx_bytes += tx_bytes; |
| 259 | |
| 260 | /* u32 values are updated without syncp protection. */ |
| 261 | rx_errs += pcptr->rx_errs; |
| 262 | tx_drps += pcptr->tx_drps; |
| 263 | } |
| 264 | s->rx_errors = rx_errs; |
| 265 | s->rx_dropped = rx_errs; |
| 266 | s->tx_dropped = tx_drps; |
| 267 | } |
| 268 | return s; |
| 269 | } |
| 270 | |
| 271 | static int ipvlan_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) |
| 272 | { |
| 273 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 274 | struct net_device *phy_dev = ipvlan->phy_dev; |
| 275 | |
| 276 | return vlan_vid_add(phy_dev, proto, vid); |
| 277 | } |
| 278 | |
| 279 | static int ipvlan_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, |
| 280 | u16 vid) |
| 281 | { |
| 282 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 283 | struct net_device *phy_dev = ipvlan->phy_dev; |
| 284 | |
| 285 | vlan_vid_del(phy_dev, proto, vid); |
| 286 | return 0; |
| 287 | } |
| 288 | |
Nicolas Dichtel | 7c41165 | 2015-04-02 17:07:06 +0200 | [diff] [blame] | 289 | static int ipvlan_get_iflink(const struct net_device *dev) |
| 290 | { |
| 291 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 292 | |
| 293 | return ipvlan->phy_dev->ifindex; |
| 294 | } |
| 295 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 296 | static const struct net_device_ops ipvlan_netdev_ops = { |
| 297 | .ndo_init = ipvlan_init, |
| 298 | .ndo_uninit = ipvlan_uninit, |
| 299 | .ndo_open = ipvlan_open, |
| 300 | .ndo_stop = ipvlan_stop, |
| 301 | .ndo_start_xmit = ipvlan_start_xmit, |
| 302 | .ndo_fix_features = ipvlan_fix_features, |
| 303 | .ndo_change_rx_flags = ipvlan_change_rx_flags, |
| 304 | .ndo_set_rx_mode = ipvlan_set_multicast_mac_filter, |
| 305 | .ndo_get_stats64 = ipvlan_get_stats64, |
| 306 | .ndo_vlan_rx_add_vid = ipvlan_vlan_rx_add_vid, |
| 307 | .ndo_vlan_rx_kill_vid = ipvlan_vlan_rx_kill_vid, |
Nicolas Dichtel | 7c41165 | 2015-04-02 17:07:06 +0200 | [diff] [blame] | 308 | .ndo_get_iflink = ipvlan_get_iflink, |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 309 | }; |
| 310 | |
| 311 | static int ipvlan_hard_header(struct sk_buff *skb, struct net_device *dev, |
| 312 | unsigned short type, const void *daddr, |
| 313 | const void *saddr, unsigned len) |
| 314 | { |
| 315 | const struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 316 | struct net_device *phy_dev = ipvlan->phy_dev; |
| 317 | |
| 318 | /* TODO Probably use a different field than dev_addr so that the |
| 319 | * mac-address on the virtual device is portable and can be carried |
| 320 | * while the packets use the mac-addr on the physical device. |
| 321 | */ |
| 322 | return dev_hard_header(skb, phy_dev, type, daddr, |
| 323 | saddr ? : dev->dev_addr, len); |
| 324 | } |
| 325 | |
| 326 | static const struct header_ops ipvlan_header_ops = { |
| 327 | .create = ipvlan_hard_header, |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 328 | .parse = eth_header_parse, |
| 329 | .cache = eth_header_cache, |
| 330 | .cache_update = eth_header_cache_update, |
| 331 | }; |
| 332 | |
David Decotigny | 314d10d | 2016-02-24 10:58:03 -0800 | [diff] [blame] | 333 | static int ipvlan_ethtool_get_link_ksettings(struct net_device *dev, |
| 334 | struct ethtool_link_ksettings *cmd) |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 335 | { |
| 336 | const struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 337 | |
David Decotigny | 314d10d | 2016-02-24 10:58:03 -0800 | [diff] [blame] | 338 | return __ethtool_get_link_ksettings(ipvlan->phy_dev, cmd); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | static void ipvlan_ethtool_get_drvinfo(struct net_device *dev, |
| 342 | struct ethtool_drvinfo *drvinfo) |
| 343 | { |
| 344 | strlcpy(drvinfo->driver, IPVLAN_DRV, sizeof(drvinfo->driver)); |
| 345 | strlcpy(drvinfo->version, IPV_DRV_VER, sizeof(drvinfo->version)); |
| 346 | } |
| 347 | |
| 348 | static u32 ipvlan_ethtool_get_msglevel(struct net_device *dev) |
| 349 | { |
| 350 | const struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 351 | |
| 352 | return ipvlan->msg_enable; |
| 353 | } |
| 354 | |
| 355 | static void ipvlan_ethtool_set_msglevel(struct net_device *dev, u32 value) |
| 356 | { |
| 357 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 358 | |
| 359 | ipvlan->msg_enable = value; |
| 360 | } |
| 361 | |
| 362 | static const struct ethtool_ops ipvlan_ethtool_ops = { |
| 363 | .get_link = ethtool_op_get_link, |
David Decotigny | 314d10d | 2016-02-24 10:58:03 -0800 | [diff] [blame] | 364 | .get_link_ksettings = ipvlan_ethtool_get_link_ksettings, |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 365 | .get_drvinfo = ipvlan_ethtool_get_drvinfo, |
| 366 | .get_msglevel = ipvlan_ethtool_get_msglevel, |
| 367 | .set_msglevel = ipvlan_ethtool_set_msglevel, |
| 368 | }; |
| 369 | |
| 370 | static int ipvlan_nl_changelink(struct net_device *dev, |
| 371 | struct nlattr *tb[], struct nlattr *data[]) |
| 372 | { |
| 373 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 374 | struct ipvl_port *port = ipvlan_port_get_rtnl(ipvlan->phy_dev); |
| 375 | |
| 376 | if (data && data[IFLA_IPVLAN_MODE]) { |
| 377 | u16 nmode = nla_get_u16(data[IFLA_IPVLAN_MODE]); |
| 378 | |
| 379 | ipvlan_set_port_mode(port, nmode); |
| 380 | } |
| 381 | return 0; |
| 382 | } |
| 383 | |
| 384 | static size_t ipvlan_nl_getsize(const struct net_device *dev) |
| 385 | { |
| 386 | return (0 |
| 387 | + nla_total_size(2) /* IFLA_IPVLAN_MODE */ |
| 388 | ); |
| 389 | } |
| 390 | |
| 391 | static int ipvlan_nl_validate(struct nlattr *tb[], struct nlattr *data[]) |
| 392 | { |
| 393 | if (data && data[IFLA_IPVLAN_MODE]) { |
| 394 | u16 mode = nla_get_u16(data[IFLA_IPVLAN_MODE]); |
| 395 | |
| 396 | if (mode < IPVLAN_MODE_L2 || mode >= IPVLAN_MODE_MAX) |
| 397 | return -EINVAL; |
| 398 | } |
| 399 | return 0; |
| 400 | } |
| 401 | |
| 402 | static int ipvlan_nl_fillinfo(struct sk_buff *skb, |
| 403 | const struct net_device *dev) |
| 404 | { |
| 405 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 406 | struct ipvl_port *port = ipvlan_port_get_rtnl(ipvlan->phy_dev); |
| 407 | int ret = -EINVAL; |
| 408 | |
| 409 | if (!port) |
| 410 | goto err; |
| 411 | |
| 412 | ret = -EMSGSIZE; |
| 413 | if (nla_put_u16(skb, IFLA_IPVLAN_MODE, port->mode)) |
| 414 | goto err; |
| 415 | |
| 416 | return 0; |
| 417 | |
| 418 | err: |
| 419 | return ret; |
| 420 | } |
| 421 | |
| 422 | static int ipvlan_link_new(struct net *src_net, struct net_device *dev, |
| 423 | struct nlattr *tb[], struct nlattr *data[]) |
| 424 | { |
| 425 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 426 | struct ipvl_port *port; |
| 427 | struct net_device *phy_dev; |
| 428 | int err; |
Mahesh Bandewar | e93fbc5 | 2016-02-20 19:31:36 -0800 | [diff] [blame] | 429 | u16 mode = IPVLAN_MODE_L3; |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 430 | |
| 431 | if (!tb[IFLA_LINK]) |
| 432 | return -EINVAL; |
| 433 | |
| 434 | phy_dev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); |
| 435 | if (!phy_dev) |
| 436 | return -ENODEV; |
| 437 | |
Mahesh Bandewar | 5933fea | 2014-12-06 15:53:33 -0800 | [diff] [blame] | 438 | if (netif_is_ipvlan(phy_dev)) { |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 439 | struct ipvl_dev *tmp = netdev_priv(phy_dev); |
| 440 | |
| 441 | phy_dev = tmp->phy_dev; |
Mahesh Bandewar | 5933fea | 2014-12-06 15:53:33 -0800 | [diff] [blame] | 442 | } else if (!netif_is_ipvlan_port(phy_dev)) { |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 443 | err = ipvlan_port_create(phy_dev); |
| 444 | if (err < 0) |
| 445 | return err; |
| 446 | } |
| 447 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 448 | if (data && data[IFLA_IPVLAN_MODE]) |
Mahesh Bandewar | e93fbc5 | 2016-02-20 19:31:36 -0800 | [diff] [blame] | 449 | mode = nla_get_u16(data[IFLA_IPVLAN_MODE]); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 450 | |
Mahesh Bandewar | e93fbc5 | 2016-02-20 19:31:36 -0800 | [diff] [blame] | 451 | port = ipvlan_port_get_rtnl(phy_dev); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 452 | ipvlan->phy_dev = phy_dev; |
| 453 | ipvlan->dev = dev; |
| 454 | ipvlan->port = port; |
| 455 | ipvlan->sfeatures = IPVLAN_FEATURES; |
Mahesh Bandewar | 296d485 | 2016-01-27 23:33:28 -0800 | [diff] [blame] | 456 | ipvlan_adjust_mtu(ipvlan, phy_dev); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 457 | INIT_LIST_HEAD(&ipvlan->addrs); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 458 | |
| 459 | /* TODO Probably put random address here to be presented to the |
| 460 | * world but keep using the physical-dev address for the outgoing |
| 461 | * packets. |
| 462 | */ |
| 463 | memcpy(dev->dev_addr, phy_dev->dev_addr, ETH_ALEN); |
| 464 | |
| 465 | dev->priv_flags |= IFF_IPVLAN_SLAVE; |
| 466 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 467 | err = register_netdevice(dev); |
| 468 | if (err < 0) |
Mahesh Bandewar | 494e848 | 2016-04-27 14:59:27 -0700 | [diff] [blame] | 469 | return err; |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 470 | |
| 471 | err = netdev_upper_dev_link(phy_dev, dev); |
Mahesh Bandewar | 494e848 | 2016-04-27 14:59:27 -0700 | [diff] [blame] | 472 | if (err) { |
| 473 | unregister_netdevice(dev); |
| 474 | return err; |
| 475 | } |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 476 | |
| 477 | list_add_tail_rcu(&ipvlan->pnode, &port->ipvlans); |
Mahesh Bandewar | e93fbc5 | 2016-02-20 19:31:36 -0800 | [diff] [blame] | 478 | ipvlan_set_port_mode(port, mode); |
| 479 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 480 | netif_stacked_transfer_operstate(phy_dev, dev); |
| 481 | return 0; |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 482 | } |
| 483 | |
| 484 | static void ipvlan_link_delete(struct net_device *dev, struct list_head *head) |
| 485 | { |
| 486 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 487 | struct ipvl_addr *addr, *next; |
| 488 | |
Konstantin Khlebnikov | 515866f | 2015-07-14 16:35:50 +0300 | [diff] [blame] | 489 | list_for_each_entry_safe(addr, next, &ipvlan->addrs, anode) { |
Konstantin Khlebnikov | 6640e67 | 2015-07-14 16:35:53 +0300 | [diff] [blame] | 490 | ipvlan_ht_addr_del(addr); |
Konstantin Khlebnikov | 515866f | 2015-07-14 16:35:50 +0300 | [diff] [blame] | 491 | list_del(&addr->anode); |
Konstantin Khlebnikov | 6a72549 | 2015-07-14 16:35:51 +0300 | [diff] [blame] | 492 | kfree_rcu(addr, rcu); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 493 | } |
Konstantin Khlebnikov | 515866f | 2015-07-14 16:35:50 +0300 | [diff] [blame] | 494 | |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 495 | list_del_rcu(&ipvlan->pnode); |
| 496 | unregister_netdevice_queue(dev, head); |
| 497 | netdev_upper_dev_unlink(ipvlan->phy_dev, dev); |
| 498 | } |
| 499 | |
| 500 | static void ipvlan_link_setup(struct net_device *dev) |
| 501 | { |
| 502 | ether_setup(dev); |
| 503 | |
| 504 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); |
Phil Sutter | bf485bc | 2015-08-18 10:30:40 +0200 | [diff] [blame] | 505 | dev->priv_flags |= IFF_UNICAST_FLT | IFF_NO_QUEUE; |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 506 | dev->netdev_ops = &ipvlan_netdev_ops; |
| 507 | dev->destructor = free_netdev; |
| 508 | dev->header_ops = &ipvlan_header_ops; |
| 509 | dev->ethtool_ops = &ipvlan_ethtool_ops; |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | static const struct nla_policy ipvlan_nl_policy[IFLA_IPVLAN_MAX + 1] = |
| 513 | { |
| 514 | [IFLA_IPVLAN_MODE] = { .type = NLA_U16 }, |
| 515 | }; |
| 516 | |
| 517 | static struct rtnl_link_ops ipvlan_link_ops = { |
| 518 | .kind = "ipvlan", |
| 519 | .priv_size = sizeof(struct ipvl_dev), |
| 520 | |
| 521 | .get_size = ipvlan_nl_getsize, |
| 522 | .policy = ipvlan_nl_policy, |
| 523 | .validate = ipvlan_nl_validate, |
| 524 | .fill_info = ipvlan_nl_fillinfo, |
| 525 | .changelink = ipvlan_nl_changelink, |
| 526 | .maxtype = IFLA_IPVLAN_MAX, |
| 527 | |
| 528 | .setup = ipvlan_link_setup, |
| 529 | .newlink = ipvlan_link_new, |
| 530 | .dellink = ipvlan_link_delete, |
| 531 | }; |
| 532 | |
Mahesh Bandewar | 92c7b0d | 2014-11-25 21:24:43 -0800 | [diff] [blame] | 533 | static int ipvlan_link_register(struct rtnl_link_ops *ops) |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 534 | { |
| 535 | return rtnl_link_register(ops); |
| 536 | } |
| 537 | |
| 538 | static int ipvlan_device_event(struct notifier_block *unused, |
| 539 | unsigned long event, void *ptr) |
| 540 | { |
| 541 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
| 542 | struct ipvl_dev *ipvlan, *next; |
| 543 | struct ipvl_port *port; |
| 544 | LIST_HEAD(lst_kill); |
| 545 | |
Mahesh Bandewar | 5933fea | 2014-12-06 15:53:33 -0800 | [diff] [blame] | 546 | if (!netif_is_ipvlan_port(dev)) |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 547 | return NOTIFY_DONE; |
| 548 | |
| 549 | port = ipvlan_port_get_rtnl(dev); |
| 550 | |
| 551 | switch (event) { |
| 552 | case NETDEV_CHANGE: |
| 553 | list_for_each_entry(ipvlan, &port->ipvlans, pnode) |
| 554 | netif_stacked_transfer_operstate(ipvlan->phy_dev, |
| 555 | ipvlan->dev); |
| 556 | break; |
| 557 | |
| 558 | case NETDEV_UNREGISTER: |
| 559 | if (dev->reg_state != NETREG_UNREGISTERING) |
| 560 | break; |
| 561 | |
| 562 | list_for_each_entry_safe(ipvlan, next, &port->ipvlans, |
| 563 | pnode) |
| 564 | ipvlan->dev->rtnl_link_ops->dellink(ipvlan->dev, |
| 565 | &lst_kill); |
| 566 | unregister_netdevice_many(&lst_kill); |
| 567 | break; |
| 568 | |
| 569 | case NETDEV_FEAT_CHANGE: |
| 570 | list_for_each_entry(ipvlan, &port->ipvlans, pnode) { |
| 571 | ipvlan->dev->features = dev->features & IPVLAN_FEATURES; |
| 572 | ipvlan->dev->gso_max_size = dev->gso_max_size; |
Eric Dumazet | f6773c5 | 2016-03-16 21:59:49 -0700 | [diff] [blame] | 573 | ipvlan->dev->gso_max_segs = dev->gso_max_segs; |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 574 | netdev_features_change(ipvlan->dev); |
| 575 | } |
| 576 | break; |
| 577 | |
| 578 | case NETDEV_CHANGEMTU: |
| 579 | list_for_each_entry(ipvlan, &port->ipvlans, pnode) |
| 580 | ipvlan_adjust_mtu(ipvlan, dev); |
| 581 | break; |
| 582 | |
| 583 | case NETDEV_PRE_TYPE_CHANGE: |
| 584 | /* Forbid underlying device to change its type. */ |
| 585 | return NOTIFY_BAD; |
| 586 | } |
| 587 | return NOTIFY_DONE; |
| 588 | } |
| 589 | |
| 590 | static int ipvlan_add_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr) |
| 591 | { |
| 592 | struct ipvl_addr *addr; |
| 593 | |
Jiri Benc | e9997c2 | 2015-03-28 19:13:25 +0100 | [diff] [blame] | 594 | if (ipvlan_addr_busy(ipvlan->port, ip6_addr, true)) { |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 595 | netif_err(ipvlan, ifup, ipvlan->dev, |
| 596 | "Failed to add IPv6=%pI6c addr for %s intf\n", |
| 597 | ip6_addr, ipvlan->dev->name); |
| 598 | return -EINVAL; |
| 599 | } |
| 600 | addr = kzalloc(sizeof(struct ipvl_addr), GFP_ATOMIC); |
| 601 | if (!addr) |
| 602 | return -ENOMEM; |
| 603 | |
| 604 | addr->master = ipvlan; |
| 605 | memcpy(&addr->ip6addr, ip6_addr, sizeof(struct in6_addr)); |
| 606 | addr->atype = IPVL_IPV6; |
Jiri Benc | 40891e8 | 2015-03-28 19:13:24 +0100 | [diff] [blame] | 607 | list_add_tail(&addr->anode, &ipvlan->addrs); |
Konstantin Khlebnikov | 515866f | 2015-07-14 16:35:50 +0300 | [diff] [blame] | 608 | |
Jiri Benc | 27705f7 | 2015-03-28 19:13:22 +0100 | [diff] [blame] | 609 | /* If the interface is not up, the address will be added to the hash |
| 610 | * list by ipvlan_open. |
| 611 | */ |
| 612 | if (netif_running(ipvlan->dev)) |
| 613 | ipvlan_ht_addr_add(ipvlan, addr); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 614 | |
| 615 | return 0; |
| 616 | } |
| 617 | |
| 618 | static void ipvlan_del_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr) |
| 619 | { |
| 620 | struct ipvl_addr *addr; |
| 621 | |
Jiri Benc | e9997c2 | 2015-03-28 19:13:25 +0100 | [diff] [blame] | 622 | addr = ipvlan_find_addr(ipvlan, ip6_addr, true); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 623 | if (!addr) |
| 624 | return; |
| 625 | |
Konstantin Khlebnikov | 6640e67 | 2015-07-14 16:35:53 +0300 | [diff] [blame] | 626 | ipvlan_ht_addr_del(addr); |
Jiri Benc | 40891e8 | 2015-03-28 19:13:24 +0100 | [diff] [blame] | 627 | list_del(&addr->anode); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 628 | kfree_rcu(addr, rcu); |
| 629 | |
| 630 | return; |
| 631 | } |
| 632 | |
| 633 | static int ipvlan_addr6_event(struct notifier_block *unused, |
| 634 | unsigned long event, void *ptr) |
| 635 | { |
| 636 | struct inet6_ifaddr *if6 = (struct inet6_ifaddr *)ptr; |
| 637 | struct net_device *dev = (struct net_device *)if6->idev->dev; |
| 638 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 639 | |
Konstantin Khlebnikov | 23a5a49 | 2015-07-14 16:35:55 +0300 | [diff] [blame] | 640 | /* FIXME IPv6 autoconf calls us from bh without RTNL */ |
| 641 | if (in_softirq()) |
| 642 | return NOTIFY_DONE; |
| 643 | |
Mahesh Bandewar | 5933fea | 2014-12-06 15:53:33 -0800 | [diff] [blame] | 644 | if (!netif_is_ipvlan(dev)) |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 645 | return NOTIFY_DONE; |
| 646 | |
| 647 | if (!ipvlan || !ipvlan->port) |
| 648 | return NOTIFY_DONE; |
| 649 | |
| 650 | switch (event) { |
| 651 | case NETDEV_UP: |
| 652 | if (ipvlan_add_addr6(ipvlan, &if6->addr)) |
| 653 | return NOTIFY_BAD; |
| 654 | break; |
| 655 | |
| 656 | case NETDEV_DOWN: |
| 657 | ipvlan_del_addr6(ipvlan, &if6->addr); |
| 658 | break; |
| 659 | } |
| 660 | |
| 661 | return NOTIFY_OK; |
| 662 | } |
| 663 | |
| 664 | static int ipvlan_add_addr4(struct ipvl_dev *ipvlan, struct in_addr *ip4_addr) |
| 665 | { |
| 666 | struct ipvl_addr *addr; |
| 667 | |
Jiri Benc | e9997c2 | 2015-03-28 19:13:25 +0100 | [diff] [blame] | 668 | if (ipvlan_addr_busy(ipvlan->port, ip4_addr, false)) { |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 669 | netif_err(ipvlan, ifup, ipvlan->dev, |
| 670 | "Failed to add IPv4=%pI4 on %s intf.\n", |
| 671 | ip4_addr, ipvlan->dev->name); |
| 672 | return -EINVAL; |
| 673 | } |
| 674 | addr = kzalloc(sizeof(struct ipvl_addr), GFP_KERNEL); |
| 675 | if (!addr) |
| 676 | return -ENOMEM; |
| 677 | |
| 678 | addr->master = ipvlan; |
| 679 | memcpy(&addr->ip4addr, ip4_addr, sizeof(struct in_addr)); |
| 680 | addr->atype = IPVL_IPV4; |
Jiri Benc | 40891e8 | 2015-03-28 19:13:24 +0100 | [diff] [blame] | 681 | list_add_tail(&addr->anode, &ipvlan->addrs); |
Konstantin Khlebnikov | 515866f | 2015-07-14 16:35:50 +0300 | [diff] [blame] | 682 | |
Jiri Benc | 27705f7 | 2015-03-28 19:13:22 +0100 | [diff] [blame] | 683 | /* If the interface is not up, the address will be added to the hash |
| 684 | * list by ipvlan_open. |
| 685 | */ |
| 686 | if (netif_running(ipvlan->dev)) |
| 687 | ipvlan_ht_addr_add(ipvlan, addr); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 688 | |
| 689 | return 0; |
| 690 | } |
| 691 | |
| 692 | static void ipvlan_del_addr4(struct ipvl_dev *ipvlan, struct in_addr *ip4_addr) |
| 693 | { |
| 694 | struct ipvl_addr *addr; |
| 695 | |
Jiri Benc | e9997c2 | 2015-03-28 19:13:25 +0100 | [diff] [blame] | 696 | addr = ipvlan_find_addr(ipvlan, ip4_addr, false); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 697 | if (!addr) |
| 698 | return; |
| 699 | |
Konstantin Khlebnikov | 6640e67 | 2015-07-14 16:35:53 +0300 | [diff] [blame] | 700 | ipvlan_ht_addr_del(addr); |
Jiri Benc | 40891e8 | 2015-03-28 19:13:24 +0100 | [diff] [blame] | 701 | list_del(&addr->anode); |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 702 | kfree_rcu(addr, rcu); |
| 703 | |
| 704 | return; |
| 705 | } |
| 706 | |
| 707 | static int ipvlan_addr4_event(struct notifier_block *unused, |
| 708 | unsigned long event, void *ptr) |
| 709 | { |
| 710 | struct in_ifaddr *if4 = (struct in_ifaddr *)ptr; |
| 711 | struct net_device *dev = (struct net_device *)if4->ifa_dev->dev; |
| 712 | struct ipvl_dev *ipvlan = netdev_priv(dev); |
| 713 | struct in_addr ip4_addr; |
| 714 | |
Mahesh Bandewar | 5933fea | 2014-12-06 15:53:33 -0800 | [diff] [blame] | 715 | if (!netif_is_ipvlan(dev)) |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 716 | return NOTIFY_DONE; |
| 717 | |
| 718 | if (!ipvlan || !ipvlan->port) |
| 719 | return NOTIFY_DONE; |
| 720 | |
| 721 | switch (event) { |
| 722 | case NETDEV_UP: |
| 723 | ip4_addr.s_addr = if4->ifa_address; |
| 724 | if (ipvlan_add_addr4(ipvlan, &ip4_addr)) |
| 725 | return NOTIFY_BAD; |
| 726 | break; |
| 727 | |
| 728 | case NETDEV_DOWN: |
| 729 | ip4_addr.s_addr = if4->ifa_address; |
| 730 | ipvlan_del_addr4(ipvlan, &ip4_addr); |
| 731 | break; |
| 732 | } |
| 733 | |
| 734 | return NOTIFY_OK; |
| 735 | } |
| 736 | |
| 737 | static struct notifier_block ipvlan_addr4_notifier_block __read_mostly = { |
| 738 | .notifier_call = ipvlan_addr4_event, |
| 739 | }; |
| 740 | |
| 741 | static struct notifier_block ipvlan_notifier_block __read_mostly = { |
| 742 | .notifier_call = ipvlan_device_event, |
| 743 | }; |
| 744 | |
| 745 | static struct notifier_block ipvlan_addr6_notifier_block __read_mostly = { |
| 746 | .notifier_call = ipvlan_addr6_event, |
| 747 | }; |
| 748 | |
| 749 | static int __init ipvlan_init_module(void) |
| 750 | { |
| 751 | int err; |
| 752 | |
| 753 | ipvlan_init_secret(); |
| 754 | register_netdevice_notifier(&ipvlan_notifier_block); |
| 755 | register_inet6addr_notifier(&ipvlan_addr6_notifier_block); |
| 756 | register_inetaddr_notifier(&ipvlan_addr4_notifier_block); |
| 757 | |
| 758 | err = ipvlan_link_register(&ipvlan_link_ops); |
| 759 | if (err < 0) |
| 760 | goto error; |
| 761 | |
| 762 | return 0; |
| 763 | error: |
| 764 | unregister_inetaddr_notifier(&ipvlan_addr4_notifier_block); |
| 765 | unregister_inet6addr_notifier(&ipvlan_addr6_notifier_block); |
| 766 | unregister_netdevice_notifier(&ipvlan_notifier_block); |
| 767 | return err; |
| 768 | } |
| 769 | |
| 770 | static void __exit ipvlan_cleanup_module(void) |
| 771 | { |
| 772 | rtnl_link_unregister(&ipvlan_link_ops); |
| 773 | unregister_netdevice_notifier(&ipvlan_notifier_block); |
| 774 | unregister_inetaddr_notifier(&ipvlan_addr4_notifier_block); |
| 775 | unregister_inet6addr_notifier(&ipvlan_addr6_notifier_block); |
| 776 | } |
| 777 | |
| 778 | module_init(ipvlan_init_module); |
| 779 | module_exit(ipvlan_cleanup_module); |
| 780 | |
| 781 | MODULE_LICENSE("GPL"); |
| 782 | MODULE_AUTHOR("Mahesh Bandewar <maheshb@google.com>"); |
| 783 | MODULE_DESCRIPTION("Driver for L3 (IPv6/IPv4) based VLANs"); |
| 784 | MODULE_ALIAS_RTNL_LINK("ipvlan"); |