drivers/staging/batman-adv/soft-interface.c

   1 /*
   2  * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
   3  *
   4  * Marek Lindner, Simon Wunderlich
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of version 2 of the GNU General Public
   8  * License as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  18  * 02110-1301, USA
  19  *
  20  */
  21
  22 #include "main.h"
  23 #include "soft-interface.h"
  24 #include "hard-interface.h"
  25 #include "routing.h"
  26 #include "send.h"
  27 #include "bat_debugfs.h"
  28 #include "translation-table.h"
  29 #include "types.h"
  30 #include "hash.h"
  31 #include "send.h"
  32 #include "bat_sysfs.h"
  33 #include <linux/slab.h>
  34 #include <linux/ethtool.h>
  35 #include <linux/etherdevice.h>
  36 #include <linux/if_vlan.h>
  37 #include "unicast.h"
  38 #include "routing.h"
  39
  40
  41 static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd);
  42 static void bat_get_drvinfo(struct net_device *dev,
  43                             struct ethtool_drvinfo *info);
  44 static u32 bat_get_msglevel(struct net_device *dev);
  45 static void bat_set_msglevel(struct net_device *dev, u32 value);
  46 static u32 bat_get_link(struct net_device *dev);
  47 static u32 bat_get_rx_csum(struct net_device *dev);
  48 static int bat_set_rx_csum(struct net_device *dev, u32 data);
  49
  50 static const struct ethtool_ops bat_ethtool_ops = {
  51         .get_settings = bat_get_settings,
  52         .get_drvinfo = bat_get_drvinfo,
  53         .get_msglevel = bat_get_msglevel,
  54         .set_msglevel = bat_set_msglevel,
  55         .get_link = bat_get_link,
  56         .get_rx_csum = bat_get_rx_csum,
  57         .set_rx_csum = bat_set_rx_csum
  58 };
  59
  60 int my_skb_head_push(struct sk_buff *skb, unsigned int len)
  61 {
  62         int result;
  63
  64         /**
  65          * TODO: We must check if we can release all references to non-payload
  66          * data using skb_header_release in our skbs to allow skb_cow_header to
  67          * work optimally. This means that those skbs are not allowed to read
  68          * or write any data which is before the current position of skb->data
  69          * after that call and thus allow other skbs with the same data buffer
  70          * to write freely in that area.
  71          */
  72         result = skb_cow_head(skb, len);
  73         if (result < 0)
  74                 return result;
  75
  76         skb_push(skb, len);
  77         return 0;
  78 }
  79
  80 static void softif_neigh_free_ref(struct kref *refcount)
  81 {
  82         struct softif_neigh *softif_neigh;
  83
  84         softif_neigh = container_of(refcount, struct softif_neigh, refcount);
  85         kfree(softif_neigh);
  86 }
  87
  88 static void softif_neigh_free_rcu(struct rcu_head *rcu)
  89 {
  90         struct softif_neigh *softif_neigh;
  91
  92         softif_neigh = container_of(rcu, struct softif_neigh, rcu);
  93         kref_put(&softif_neigh->refcount, softif_neigh_free_ref);
  94 }
  95
  96 void softif_neigh_purge(struct bat_priv *bat_priv)
  97 {
  98         struct softif_neigh *softif_neigh, *softif_neigh_tmp;
  99         struct hlist_node *node, *node_tmp;
 100
 101         spin_lock_bh(&bat_priv->softif_neigh_lock);
 102
 103         hlist_for_each_entry_safe(softif_neigh, node, node_tmp,
 104                                   &bat_priv->softif_neigh_list, list) {
 105
 106                 if ((!time_after(jiffies, softif_neigh->last_seen +
 107                                 msecs_to_jiffies(SOFTIF_NEIGH_TIMEOUT))) &&
 108                     (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE))
 109                         continue;
 110
 111                 hlist_del_rcu(&softif_neigh->list);
 112
 113                 if (bat_priv->softif_neigh == softif_neigh) {
 114                         bat_dbg(DBG_ROUTES, bat_priv,
 115                                  "Current mesh exit point '%pM' vanished "
 116                                  "(vid: %d).\n",
 117                                  softif_neigh->addr, softif_neigh->vid);
 118                         softif_neigh_tmp = bat_priv->softif_neigh;
 119                         bat_priv->softif_neigh = NULL;
 120                         kref_put(&softif_neigh_tmp->refcount,
 121                                  softif_neigh_free_ref);
 122                 }
 123
 124                 call_rcu(&softif_neigh->rcu, softif_neigh_free_rcu);
 125         }
 126
 127         spin_unlock_bh(&bat_priv->softif_neigh_lock);
 128 }
 129
 130 static struct softif_neigh *softif_neigh_get(struct bat_priv *bat_priv,
 131                                              uint8_t *addr, short vid)
 132 {
 133         struct softif_neigh *softif_neigh;
 134         struct hlist_node *node;
 135
 136         rcu_read_lock();
 137         hlist_for_each_entry_rcu(softif_neigh, node,
 138                                  &bat_priv->softif_neigh_list, list) {
 139                 if (memcmp(softif_neigh->addr, addr, ETH_ALEN) != 0)
 140                         continue;
 141
 142                 if (softif_neigh->vid != vid)
 143                         continue;
 144
 145                 softif_neigh->last_seen = jiffies;
 146                 goto found;
 147         }
 148
 149         softif_neigh = kzalloc(sizeof(struct softif_neigh), GFP_ATOMIC);
 150         if (!softif_neigh)
 151                 goto out;
 152
 153         memcpy(softif_neigh->addr, addr, ETH_ALEN);
 154         softif_neigh->vid = vid;
 155         softif_neigh->last_seen = jiffies;
 156         kref_init(&softif_neigh->refcount);
 157
 158         INIT_HLIST_NODE(&softif_neigh->list);
 159         spin_lock_bh(&bat_priv->softif_neigh_lock);
 160         hlist_add_head_rcu(&softif_neigh->list, &bat_priv->softif_neigh_list);
 161         spin_unlock_bh(&bat_priv->softif_neigh_lock);
 162
 163 found:
 164         kref_get(&softif_neigh->refcount);
 165 out:
 166         rcu_read_unlock();
 167         return softif_neigh;
 168 }
 169
 170 int softif_neigh_seq_print_text(struct seq_file *seq, void *offset)
 171 {
 172         struct net_device *net_dev = (struct net_device *)seq->private;
 173         struct bat_priv *bat_priv = netdev_priv(net_dev);
 174         struct softif_neigh *softif_neigh;
 175         struct hlist_node *node;
 176         size_t buf_size, pos;
 177         char *buff;
 178
 179         if (!bat_priv->primary_if) {
 180                 return seq_printf(seq, "BATMAN mesh %s disabled - "
 181                                "please specify interfaces to enable it\n",
 182                                net_dev->name);
 183         }
 184
 185         seq_printf(seq, "Softif neighbor list (%s)\n", net_dev->name);
 186
 187         buf_size = 1;
 188         /* Estimate length for: "   xx:xx:xx:xx:xx:xx\n" */
 189         rcu_read_lock();
 190         hlist_for_each_entry_rcu(softif_neigh, node,
 191                                  &bat_priv->softif_neigh_list, list)
 192                 buf_size += 30;
 193         rcu_read_unlock();
 194
 195         buff = kmalloc(buf_size, GFP_ATOMIC);
 196         if (!buff)
 197                 return -ENOMEM;
 198
 199         buff[0] = '\0';
 200         pos = 0;
 201
 202         rcu_read_lock();
 203         hlist_for_each_entry_rcu(softif_neigh, node,
 204                                  &bat_priv->softif_neigh_list, list) {
 205                 pos += snprintf(buff + pos, 31, "%s %pM (vid: %d)\n",
 206                                 bat_priv->softif_neigh == softif_neigh
 207                                 ? "=>" : "  ", softif_neigh->addr,
 208                                 softif_neigh->vid);
 209         }
 210         rcu_read_unlock();
 211
 212         seq_printf(seq, "%s", buff);
 213         kfree(buff);
 214         return 0;
 215 }
 216
 217 static void softif_batman_recv(struct sk_buff *skb, struct net_device *dev,
 218                                short vid)
 219 {
 220         struct bat_priv *bat_priv = netdev_priv(dev);
 221         struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
 222         struct batman_packet *batman_packet;
 223         struct softif_neigh *softif_neigh, *softif_neigh_tmp;
 224
 225         if (ntohs(ethhdr->h_proto) == ETH_P_8021Q)
 226                 batman_packet = (struct batman_packet *)
 227                                         (skb->data + ETH_HLEN + VLAN_HLEN);
 228         else
 229                 batman_packet = (struct batman_packet *)(skb->data + ETH_HLEN);
 230
 231         if (batman_packet->version != COMPAT_VERSION)
 232                 goto err;
 233
 234         if (batman_packet->packet_type != BAT_PACKET)
 235                 goto err;
 236
 237         if (!(batman_packet->flags & PRIMARIES_FIRST_HOP))
 238                 goto err;
 239
 240         if (is_my_mac(batman_packet->orig))
 241                 goto err;
 242
 243         softif_neigh = softif_neigh_get(bat_priv, batman_packet->orig, vid);
 244
 245         if (!softif_neigh)
 246                 goto err;
 247
 248         if (bat_priv->softif_neigh == softif_neigh)
 249                 goto out;
 250
 251         /* we got a neighbor but its mac is 'bigger' than ours  */
 252         if (memcmp(bat_priv->primary_if->net_dev->dev_addr,
 253                    softif_neigh->addr, ETH_ALEN) < 0)
 254                 goto out;
 255
 256         /* switch to new 'smallest neighbor' */
 257         if ((bat_priv->softif_neigh) &&
 258             (memcmp(softif_neigh->addr, bat_priv->softif_neigh->addr,
 259                                                         ETH_ALEN) < 0)) {
 260                 bat_dbg(DBG_ROUTES, bat_priv,
 261                         "Changing mesh exit point from %pM (vid: %d) "
 262                         "to %pM (vid: %d).\n",
 263                          bat_priv->softif_neigh->addr,
 264                          bat_priv->softif_neigh->vid,
 265                          softif_neigh->addr, softif_neigh->vid);
 266                 softif_neigh_tmp = bat_priv->softif_neigh;
 267                 bat_priv->softif_neigh = softif_neigh;
 268                 kref_put(&softif_neigh_tmp->refcount, softif_neigh_free_ref);
 269                 /* we need to hold the additional reference */
 270                 goto err;
 271         }
 272
 273         /* close own batX device and use softif_neigh as exit node */
 274         if ((!bat_priv->softif_neigh) &&
 275             (memcmp(softif_neigh->addr,
 276                     bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN) < 0)) {
 277                 bat_dbg(DBG_ROUTES, bat_priv,
 278                         "Setting mesh exit point to %pM (vid: %d).\n",
 279                         softif_neigh->addr, softif_neigh->vid);
 280                 bat_priv->softif_neigh = softif_neigh;
 281                 /* we need to hold the additional reference */
 282                 goto err;
 283         }
 284
 285 out:
 286         kref_put(&softif_neigh->refcount, softif_neigh_free_ref);
 287 err:
 288         kfree_skb(skb);
 289         return;
 290 }
 291
 292 static int interface_open(struct net_device *dev)
 293 {
 294         netif_start_queue(dev);
 295         return 0;
 296 }
 297
 298 static int interface_release(struct net_device *dev)
 299 {
 300         netif_stop_queue(dev);
 301         return 0;
 302 }
 303
 304 static struct net_device_stats *interface_stats(struct net_device *dev)
 305 {
 306         struct bat_priv *bat_priv = netdev_priv(dev);
 307         return &bat_priv->stats;
 308 }
 309
 310 static int interface_set_mac_addr(struct net_device *dev, void *p)
 311 {
 312         struct bat_priv *bat_priv = netdev_priv(dev);
 313         struct sockaddr *addr = p;
 314
 315         if (!is_valid_ether_addr(addr->sa_data))
 316                 return -EADDRNOTAVAIL;
 317
 318         /* only modify hna-table if it has been initialised before */
 319         if (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE) {
 320                 hna_local_remove(bat_priv, dev->dev_addr,
 321                                  "mac address changed");
 322                 hna_local_add(dev, addr->sa_data);
 323         }
 324
 325         memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
 326         return 0;
 327 }
 328
 329 static int interface_change_mtu(struct net_device *dev, int new_mtu)
 330 {
 331         /* check ranges */
 332         if ((new_mtu < 68) || (new_mtu > hardif_min_mtu(dev)))
 333                 return -EINVAL;
 334
 335         dev->mtu = new_mtu;
 336
 337         return 0;
 338 }
 339
 340 int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
 341 {
 342         struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
 343         struct bat_priv *bat_priv = netdev_priv(soft_iface);
 344         struct bcast_packet *bcast_packet;
 345         struct vlan_ethhdr *vhdr;
 346         int data_len = skb->len, ret;
 347         short vid = -1;
 348
 349         if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE)
 350                 goto dropped;
 351
 352         soft_iface->trans_start = jiffies;
 353
 354         switch (ntohs(ethhdr->h_proto)) {
 355         case ETH_P_8021Q:
 356                 vhdr = (struct vlan_ethhdr *)skb->data;
 357                 vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
 358
 359                 if (ntohs(vhdr->h_vlan_encapsulated_proto) != ETH_P_BATMAN)
 360                         break;
 361
 362                 /* fall through */
 363         case ETH_P_BATMAN:
 364                 softif_batman_recv(skb, soft_iface, vid);
 365                 goto end;
 366         }
 367
 368         /**
 369          * if we have a another chosen mesh exit node in range
 370          * it will transport the packets to the mesh
 371          */
 372         if ((bat_priv->softif_neigh) && (bat_priv->softif_neigh->vid == vid))
 373                 goto dropped;
 374
 375         /* TODO: check this for locks */
 376         hna_local_add(soft_iface, ethhdr->h_source);
 377
 378         /* ethernet packet should be broadcasted */
 379         if (is_bcast(ethhdr->h_dest) || is_mcast(ethhdr->h_dest)) {
 380                 if (!bat_priv->primary_if)
 381                         goto dropped;
 382
 383                 if (my_skb_head_push(skb, sizeof(struct bcast_packet)) < 0)
 384                         goto dropped;
 385
 386                 bcast_packet = (struct bcast_packet *)skb->data;
 387                 bcast_packet->version = COMPAT_VERSION;
 388                 bcast_packet->ttl = TTL;
 389
 390                 /* batman packet type: broadcast */
 391                 bcast_packet->packet_type = BAT_BCAST;
 392
 393                 /* hw address of first interface is the orig mac because only
 394                  * this mac is known throughout the mesh */
 395                 memcpy(bcast_packet->orig,
 396                        bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
 397
 398                 /* set broadcast sequence number */
 399                 bcast_packet->seqno =
 400                         htonl(atomic_inc_return(&bat_priv->bcast_seqno));
 401
 402                 add_bcast_packet_to_list(bat_priv, skb);
 403
 404                 /* a copy is stored in the bcast list, therefore removing
 405                  * the original skb. */
 406                 kfree_skb(skb);
 407
 408         /* unicast packet */
 409         } else {
 410                 ret = unicast_send_skb(skb, bat_priv);
 411                 if (ret != 0)
 412                         goto dropped_freed;
 413         }
 414
 415         bat_priv->stats.tx_packets++;
 416         bat_priv->stats.tx_bytes += data_len;
 417         goto end;
 418
 419 dropped:
 420         kfree_skb(skb);
 421 dropped_freed:
 422         bat_priv->stats.tx_dropped++;
 423 end:
 424         return NETDEV_TX_OK;
 425 }
 426
 427 void interface_rx(struct net_device *soft_iface,
 428                   struct sk_buff *skb, struct batman_if *recv_if,
 429                   int hdr_size)
 430 {
 431         struct bat_priv *bat_priv = netdev_priv(soft_iface);
 432         struct unicast_packet *unicast_packet;
 433         struct ethhdr *ethhdr;
 434         struct vlan_ethhdr *vhdr;
 435         short vid = -1;
 436         int ret;
 437
 438         /* check if enough space is available for pulling, and pull */
 439         if (!pskb_may_pull(skb, hdr_size))
 440                 goto dropped;
 441
 442         skb_pull_rcsum(skb, hdr_size);
 443         skb_reset_mac_header(skb);
 444
 445         ethhdr = (struct ethhdr *)skb_mac_header(skb);
 446
 447         switch (ntohs(ethhdr->h_proto)) {
 448         case ETH_P_8021Q:
 449                 vhdr = (struct vlan_ethhdr *)skb->data;
 450                 vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
 451
 452                 if (ntohs(vhdr->h_vlan_encapsulated_proto) != ETH_P_BATMAN)
 453                         break;
 454
 455                 /* fall through */
 456         case ETH_P_BATMAN:
 457                 goto dropped;
 458         }
 459
 460         /**
 461          * if we have a another chosen mesh exit node in range
 462          * it will transport the packets to the non-mesh network
 463          */
 464         if ((bat_priv->softif_neigh) && (bat_priv->softif_neigh->vid == vid)) {
 465                 skb_push(skb, hdr_size);
 466                 unicast_packet = (struct unicast_packet *)skb->data;
 467
 468                 if ((unicast_packet->packet_type != BAT_UNICAST) &&
 469                     (unicast_packet->packet_type != BAT_UNICAST_FRAG))
 470                         goto dropped;
 471
 472                 skb_reset_mac_header(skb);
 473
 474                 memcpy(unicast_packet->dest,
 475                        bat_priv->softif_neigh->addr, ETH_ALEN);
 476                 ret = route_unicast_packet(skb, recv_if, hdr_size);
 477                 if (ret == NET_RX_DROP)
 478                         goto dropped;
 479
 480                 goto out;
 481         }
 482
 483         /* skb->dev & skb->pkt_type are set here */
 484         if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
 485                 goto dropped;
 486         skb->protocol = eth_type_trans(skb, soft_iface);
 487
 488         /* should not be neccesary anymore as we use skb_pull_rcsum()
 489          * TODO: please verify this and remove this TODO
 490          * -- Dec 21st 2009, Simon Wunderlich */
 491
 492 /*      skb->ip_summed = CHECKSUM_UNNECESSARY;*/
 493
 494         bat_priv->stats.rx_packets++;
 495         bat_priv->stats.rx_bytes += skb->len + sizeof(struct ethhdr);
 496
 497         soft_iface->last_rx = jiffies;
 498
 499         netif_rx(skb);
 500         return;
 501
 502 dropped:
 503         kfree_skb(skb);
 504 out:
 505         return;
 506 }
 507
 508 #ifdef HAVE_NET_DEVICE_OPS
 509 static const struct net_device_ops bat_netdev_ops = {
 510         .ndo_open = interface_open,
 511         .ndo_stop = interface_release,
 512         .ndo_get_stats = interface_stats,
 513         .ndo_set_mac_address = interface_set_mac_addr,
 514         .ndo_change_mtu = interface_change_mtu,
 515         .ndo_start_xmit = interface_tx,
 516         .ndo_validate_addr = eth_validate_addr
 517 };
 518 #endif
 519
 520 static void interface_setup(struct net_device *dev)
 521 {
 522         struct bat_priv *priv = netdev_priv(dev);
 523         char dev_addr[ETH_ALEN];
 524
 525         ether_setup(dev);
 526
 527 #ifdef HAVE_NET_DEVICE_OPS
 528         dev->netdev_ops = &bat_netdev_ops;
 529 #else
 530         dev->open = interface_open;
 531         dev->stop = interface_release;
 532         dev->get_stats = interface_stats;
 533         dev->set_mac_address = interface_set_mac_addr;
 534         dev->change_mtu = interface_change_mtu;
 535         dev->hard_start_xmit = interface_tx;
 536 #endif
 537         dev->destructor = free_netdev;
 538
 539         /**
 540          * can't call min_mtu, because the needed variables
 541          * have not been initialized yet
 542          */
 543         dev->mtu = ETH_DATA_LEN;
 544         dev->hard_header_len = BAT_HEADER_LEN; /* reserve more space in the
 545                                                 * skbuff for our header */
 546
 547         /* generate random address */
 548         random_ether_addr(dev_addr);
 549         memcpy(dev->dev_addr, dev_addr, ETH_ALEN);
 550
 551         SET_ETHTOOL_OPS(dev, &bat_ethtool_ops);
 552
 553         memset(priv, 0, sizeof(struct bat_priv));
 554 }
 555
 556 struct net_device *softif_create(char *name)
 557 {
 558         struct net_device *soft_iface;
 559         struct bat_priv *bat_priv;
 560         int ret;
 561
 562         soft_iface = alloc_netdev(sizeof(struct bat_priv) , name,
 563                                    interface_setup);
 564
 565         if (!soft_iface) {
 566                 pr_err("Unable to allocate the batman interface: %s\n", name);
 567                 goto out;
 568         }
 569
 570         ret = register_netdev(soft_iface);
 571         if (ret < 0) {
 572                 pr_err("Unable to register the batman interface '%s': %i\n",
 573                        name, ret);
 574                 goto free_soft_iface;
 575         }
 576
 577         bat_priv = netdev_priv(soft_iface);
 578
 579         atomic_set(&bat_priv->aggregated_ogms, 1);
 580         atomic_set(&bat_priv->bonding, 0);
 581         atomic_set(&bat_priv->vis_mode, VIS_TYPE_CLIENT_UPDATE);
 582         atomic_set(&bat_priv->orig_interval, 1000);
 583         atomic_set(&bat_priv->hop_penalty, 10);
 584         atomic_set(&bat_priv->log_level, 0);
 585         atomic_set(&bat_priv->fragmentation, 1);
 586         atomic_set(&bat_priv->bcast_queue_left, BCAST_QUEUE_LEN);
 587         atomic_set(&bat_priv->batman_queue_left, BATMAN_QUEUE_LEN);
 588
 589         atomic_set(&bat_priv->mesh_state, MESH_INACTIVE);
 590         atomic_set(&bat_priv->bcast_seqno, 1);
 591         atomic_set(&bat_priv->hna_local_changed, 0);
 592
 593         bat_priv->primary_if = NULL;
 594         bat_priv->num_ifaces = 0;
 595         bat_priv->softif_neigh = NULL;
 596
 597         ret = sysfs_add_meshif(soft_iface);
 598         if (ret < 0)
 599                 goto unreg_soft_iface;
 600
 601         ret = debugfs_add_meshif(soft_iface);
 602         if (ret < 0)
 603                 goto unreg_sysfs;
 604
 605         ret = mesh_init(soft_iface);
 606         if (ret < 0)
 607                 goto unreg_debugfs;
 608
 609         return soft_iface;
 610
 611 unreg_debugfs:
 612         debugfs_del_meshif(soft_iface);
 613 unreg_sysfs:
 614         sysfs_del_meshif(soft_iface);
 615 unreg_soft_iface:
 616         unregister_netdev(soft_iface);
 617         return NULL;
 618
 619 free_soft_iface:
 620         free_netdev(soft_iface);
 621 out:
 622         return NULL;
 623 }
 624
 625 void softif_destroy(struct net_device *soft_iface)
 626 {
 627         debugfs_del_meshif(soft_iface);
 628         sysfs_del_meshif(soft_iface);
 629         mesh_free(soft_iface);
 630         unregister_netdevice(soft_iface);
 631 }
 632
 633 /* ethtool */
 634 static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 635 {
 636         cmd->supported = 0;
 637         cmd->advertising = 0;
 638         cmd->speed = SPEED_10;
 639         cmd->duplex = DUPLEX_FULL;
 640         cmd->port = PORT_TP;
 641         cmd->phy_address = 0;
 642         cmd->transceiver = XCVR_INTERNAL;
 643         cmd->autoneg = AUTONEG_DISABLE;
 644         cmd->maxtxpkt = 0;
 645         cmd->maxrxpkt = 0;
 646
 647         return 0;
 648 }
 649
 650 static void bat_get_drvinfo(struct net_device *dev,
 651                             struct ethtool_drvinfo *info)
 652 {
 653         strcpy(info->driver, "B.A.T.M.A.N. advanced");
 654         strcpy(info->version, SOURCE_VERSION);
 655         strcpy(info->fw_version, "N/A");
 656         strcpy(info->bus_info, "batman");
 657 }
 658
 659 static u32 bat_get_msglevel(struct net_device *dev)
 660 {
 661         return -EOPNOTSUPP;
 662 }
 663
 664 static void bat_set_msglevel(struct net_device *dev, u32 value)
 665 {
 666 }
 667
 668 static u32 bat_get_link(struct net_device *dev)
 669 {
 670         return 1;
 671 }
 672
 673 static u32 bat_get_rx_csum(struct net_device *dev)
 674 {
 675         return 0;
 676 }
 677
 678 static int bat_set_rx_csum(struct net_device *dev, u32 data)
 679 {
 680         return -EOPNOTSUPP;
 681 }