1 /* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors: 2 * 3 * Marek Lindner, Simon Wunderlich 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of version 2 of the GNU General Public 7 * License as published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, but 10 * WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 17 * 02110-1301, USA 18 */ 19 20 #include "main.h" 21 #include "soft-interface.h" 22 #include "hard-interface.h" 23 #include "distributed-arp-table.h" 24 #include "routing.h" 25 #include "send.h" 26 #include "debugfs.h" 27 #include "translation-table.h" 28 #include "hash.h" 29 #include "gateway_common.h" 30 #include "gateway_client.h" 31 #include "sysfs.h" 32 #include "originator.h" 33 #include <linux/slab.h> 34 #include <linux/ethtool.h> 35 #include <linux/etherdevice.h> 36 #include <linux/if_vlan.h> 37 #include <linux/if_ether.h> 38 #include "unicast.h" 39 #include "bridge_loop_avoidance.h" 40 #include "network-coding.h" 41 42 43 static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd); 44 static void batadv_get_drvinfo(struct net_device *dev, 45 struct ethtool_drvinfo *info); 46 static u32 batadv_get_msglevel(struct net_device *dev); 47 static void batadv_set_msglevel(struct net_device *dev, u32 value); 48 static u32 batadv_get_link(struct net_device *dev); 49 static void batadv_get_strings(struct net_device *dev, u32 stringset, u8 *data); 50 static void batadv_get_ethtool_stats(struct net_device *dev, 51 struct ethtool_stats *stats, u64 *data); 52 static int batadv_get_sset_count(struct net_device *dev, int stringset); 53 54 static const struct ethtool_ops batadv_ethtool_ops = { 55 .get_settings = batadv_get_settings, 56 .get_drvinfo = batadv_get_drvinfo, 57 .get_msglevel = batadv_get_msglevel, 58 .set_msglevel = batadv_set_msglevel, 59 .get_link = batadv_get_link, 60 .get_strings = batadv_get_strings, 61 .get_ethtool_stats = batadv_get_ethtool_stats, 62 .get_sset_count = batadv_get_sset_count, 63 }; 64 65 int batadv_skb_head_push(struct sk_buff *skb, unsigned int len) 66 { 67 int result; 68 69 /* TODO: We must check if we can release all references to non-payload 70 * data using skb_header_release in our skbs to allow skb_cow_header to 71 * work optimally. This means that those skbs are not allowed to read 72 * or write any data which is before the current position of skb->data 73 * after that call and thus allow other skbs with the same data buffer 74 * to write freely in that area. 75 */ 76 result = skb_cow_head(skb, len); 77 if (result < 0) 78 return result; 79 80 skb_push(skb, len); 81 return 0; 82 } 83 84 static int batadv_interface_open(struct net_device *dev) 85 { 86 netif_start_queue(dev); 87 return 0; 88 } 89 90 static int batadv_interface_release(struct net_device *dev) 91 { 92 netif_stop_queue(dev); 93 return 0; 94 } 95 96 static struct net_device_stats *batadv_interface_stats(struct net_device *dev) 97 { 98 struct batadv_priv *bat_priv = netdev_priv(dev); 99 struct net_device_stats *stats = &bat_priv->stats; 100 101 stats->tx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_TX); 102 stats->tx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_TX_BYTES); 103 stats->tx_dropped = batadv_sum_counter(bat_priv, BATADV_CNT_TX_DROPPED); 104 stats->rx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_RX); 105 stats->rx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_RX_BYTES); 106 return stats; 107 } 108 109 static int batadv_interface_set_mac_addr(struct net_device *dev, void *p) 110 { 111 struct batadv_priv *bat_priv = netdev_priv(dev); 112 struct sockaddr *addr = p; 113 uint8_t old_addr[ETH_ALEN]; 114 115 if (!is_valid_ether_addr(addr->sa_data)) 116 return -EADDRNOTAVAIL; 117 118 memcpy(old_addr, dev->dev_addr, ETH_ALEN); 119 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 120 121 /* only modify transtable if it has been initialized before */ 122 if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE) { 123 batadv_tt_local_remove(bat_priv, old_addr, 124 "mac address changed", false); 125 batadv_tt_local_add(dev, addr->sa_data, BATADV_NULL_IFINDEX); 126 } 127 128 return 0; 129 } 130 131 static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu) 132 { 133 /* check ranges */ 134 if ((new_mtu < 68) || (new_mtu > batadv_hardif_min_mtu(dev))) 135 return -EINVAL; 136 137 dev->mtu = new_mtu; 138 139 return 0; 140 } 141 142 static int batadv_interface_tx(struct sk_buff *skb, 143 struct net_device *soft_iface) 144 { 145 struct ethhdr *ethhdr = (struct ethhdr *)skb->data; 146 struct batadv_priv *bat_priv = netdev_priv(soft_iface); 147 struct batadv_hard_iface *primary_if = NULL; 148 struct batadv_bcast_packet *bcast_packet; 149 struct vlan_ethhdr *vhdr; 150 __be16 ethertype = __constant_htons(ETH_P_BATMAN); 151 static const uint8_t stp_addr[ETH_ALEN] = {0x01, 0x80, 0xC2, 0x00, 152 0x00, 0x00}; 153 static const uint8_t ectp_addr[ETH_ALEN] = {0xCF, 0x00, 0x00, 0x00, 154 0x00, 0x00}; 155 unsigned int header_len = 0; 156 int data_len = skb->len, ret; 157 short vid __maybe_unused = -1; 158 bool do_bcast = false; 159 uint32_t seqno; 160 unsigned long brd_delay = 1; 161 162 if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) 163 goto dropped; 164 165 soft_iface->trans_start = jiffies; 166 167 switch (ntohs(ethhdr->h_proto)) { 168 case ETH_P_8021Q: 169 vhdr = (struct vlan_ethhdr *)skb->data; 170 vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK; 171 172 if (vhdr->h_vlan_encapsulated_proto != ethertype) 173 break; 174 175 /* fall through */ 176 case ETH_P_BATMAN: 177 goto dropped; 178 } 179 180 if (batadv_bla_tx(bat_priv, skb, vid)) 181 goto dropped; 182 183 /* Register the client MAC in the transtable */ 184 if (!is_multicast_ether_addr(ethhdr->h_source)) 185 batadv_tt_local_add(soft_iface, ethhdr->h_source, skb->skb_iif); 186 187 /* don't accept stp packets. STP does not help in meshes. 188 * better use the bridge loop avoidance ... 189 * 190 * The same goes for ECTP sent at least by some Cisco Switches, 191 * it might confuse the mesh when used with bridge loop avoidance. 192 */ 193 if (batadv_compare_eth(ethhdr->h_dest, stp_addr)) 194 goto dropped; 195 196 if (batadv_compare_eth(ethhdr->h_dest, ectp_addr)) 197 goto dropped; 198 199 if (is_multicast_ether_addr(ethhdr->h_dest)) { 200 do_bcast = true; 201 202 switch (atomic_read(&bat_priv->gw_mode)) { 203 case BATADV_GW_MODE_SERVER: 204 /* gateway servers should not send dhcp 205 * requests into the mesh 206 */ 207 ret = batadv_gw_is_dhcp_target(skb, &header_len); 208 if (ret) 209 goto dropped; 210 break; 211 case BATADV_GW_MODE_CLIENT: 212 /* gateway clients should send dhcp requests 213 * via unicast to their gateway 214 */ 215 ret = batadv_gw_is_dhcp_target(skb, &header_len); 216 if (ret) 217 do_bcast = false; 218 break; 219 case BATADV_GW_MODE_OFF: 220 default: 221 break; 222 } 223 } 224 225 /* ethernet packet should be broadcasted */ 226 if (do_bcast) { 227 primary_if = batadv_primary_if_get_selected(bat_priv); 228 if (!primary_if) 229 goto dropped; 230 231 /* in case of ARP request, we do not immediately broadcasti the 232 * packet, instead we first wait for DAT to try to retrieve the 233 * correct ARP entry 234 */ 235 if (batadv_dat_snoop_outgoing_arp_request(bat_priv, skb)) 236 brd_delay = msecs_to_jiffies(ARP_REQ_DELAY); 237 238 if (batadv_skb_head_push(skb, sizeof(*bcast_packet)) < 0) 239 goto dropped; 240 241 bcast_packet = (struct batadv_bcast_packet *)skb->data; 242 bcast_packet->header.version = BATADV_COMPAT_VERSION; 243 bcast_packet->header.ttl = BATADV_TTL; 244 245 /* batman packet type: broadcast */ 246 bcast_packet->header.packet_type = BATADV_BCAST; 247 bcast_packet->reserved = 0; 248 249 /* hw address of first interface is the orig mac because only 250 * this mac is known throughout the mesh 251 */ 252 memcpy(bcast_packet->orig, 253 primary_if->net_dev->dev_addr, ETH_ALEN); 254 255 /* set broadcast sequence number */ 256 seqno = atomic_inc_return(&bat_priv->bcast_seqno); 257 bcast_packet->seqno = htonl(seqno); 258 259 batadv_add_bcast_packet_to_list(bat_priv, skb, brd_delay); 260 261 /* a copy is stored in the bcast list, therefore removing 262 * the original skb. 263 */ 264 kfree_skb(skb); 265 266 /* unicast packet */ 267 } else { 268 if (atomic_read(&bat_priv->gw_mode) != BATADV_GW_MODE_OFF) { 269 ret = batadv_gw_out_of_range(bat_priv, skb, ethhdr); 270 if (ret) 271 goto dropped; 272 } 273 274 if (batadv_dat_snoop_outgoing_arp_request(bat_priv, skb)) 275 goto dropped; 276 277 batadv_dat_snoop_outgoing_arp_reply(bat_priv, skb); 278 279 ret = batadv_unicast_send_skb(bat_priv, skb); 280 if (ret != 0) 281 goto dropped_freed; 282 } 283 284 batadv_inc_counter(bat_priv, BATADV_CNT_TX); 285 batadv_add_counter(bat_priv, BATADV_CNT_TX_BYTES, data_len); 286 goto end; 287 288 dropped: 289 kfree_skb(skb); 290 dropped_freed: 291 batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED); 292 end: 293 if (primary_if) 294 batadv_hardif_free_ref(primary_if); 295 return NETDEV_TX_OK; 296 } 297 298 void batadv_interface_rx(struct net_device *soft_iface, 299 struct sk_buff *skb, struct batadv_hard_iface *recv_if, 300 int hdr_size, struct batadv_orig_node *orig_node) 301 { 302 struct batadv_priv *bat_priv = netdev_priv(soft_iface); 303 struct ethhdr *ethhdr; 304 struct vlan_ethhdr *vhdr; 305 struct batadv_header *batadv_header = (struct batadv_header *)skb->data; 306 short vid __maybe_unused = -1; 307 __be16 ethertype = __constant_htons(ETH_P_BATMAN); 308 bool is_bcast; 309 310 is_bcast = (batadv_header->packet_type == BATADV_BCAST); 311 312 /* check if enough space is available for pulling, and pull */ 313 if (!pskb_may_pull(skb, hdr_size)) 314 goto dropped; 315 316 skb_pull_rcsum(skb, hdr_size); 317 skb_reset_mac_header(skb); 318 319 ethhdr = (struct ethhdr *)skb_mac_header(skb); 320 321 switch (ntohs(ethhdr->h_proto)) { 322 case ETH_P_8021Q: 323 vhdr = (struct vlan_ethhdr *)skb->data; 324 vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK; 325 326 if (vhdr->h_vlan_encapsulated_proto != ethertype) 327 break; 328 329 /* fall through */ 330 case ETH_P_BATMAN: 331 goto dropped; 332 } 333 334 /* skb->dev & skb->pkt_type are set here */ 335 if (unlikely(!pskb_may_pull(skb, ETH_HLEN))) 336 goto dropped; 337 skb->protocol = eth_type_trans(skb, soft_iface); 338 339 /* should not be necessary anymore as we use skb_pull_rcsum() 340 * TODO: please verify this and remove this TODO 341 * -- Dec 21st 2009, Simon Wunderlich 342 */ 343 344 /* skb->ip_summed = CHECKSUM_UNNECESSARY; */ 345 346 batadv_inc_counter(bat_priv, BATADV_CNT_RX); 347 batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES, 348 skb->len + ETH_HLEN); 349 350 soft_iface->last_rx = jiffies; 351 352 /* Let the bridge loop avoidance check the packet. If will 353 * not handle it, we can safely push it up. 354 */ 355 if (batadv_bla_rx(bat_priv, skb, vid, is_bcast)) 356 goto out; 357 358 if (orig_node) 359 batadv_tt_add_temporary_global_entry(bat_priv, orig_node, 360 ethhdr->h_source); 361 362 if (batadv_is_ap_isolated(bat_priv, ethhdr->h_source, ethhdr->h_dest)) 363 goto dropped; 364 365 netif_rx(skb); 366 goto out; 367 368 dropped: 369 kfree_skb(skb); 370 out: 371 return; 372 } 373 374 /* batman-adv network devices have devices nesting below it and are a special 375 * "super class" of normal network devices; split their locks off into a 376 * separate class since they always nest. 377 */ 378 static struct lock_class_key batadv_netdev_xmit_lock_key; 379 static struct lock_class_key batadv_netdev_addr_lock_key; 380 381 /** 382 * batadv_set_lockdep_class_one - Set lockdep class for a single tx queue 383 * @dev: device which owns the tx queue 384 * @txq: tx queue to modify 385 * @_unused: always NULL 386 */ 387 static void batadv_set_lockdep_class_one(struct net_device *dev, 388 struct netdev_queue *txq, 389 void *_unused) 390 { 391 lockdep_set_class(&txq->_xmit_lock, &batadv_netdev_xmit_lock_key); 392 } 393 394 /** 395 * batadv_set_lockdep_class - Set txq and addr_list lockdep class 396 * @dev: network device to modify 397 */ 398 static void batadv_set_lockdep_class(struct net_device *dev) 399 { 400 lockdep_set_class(&dev->addr_list_lock, &batadv_netdev_addr_lock_key); 401 netdev_for_each_tx_queue(dev, batadv_set_lockdep_class_one, NULL); 402 } 403 404 /** 405 * batadv_softif_destroy_finish - cleans up the remains of a softif 406 * @work: work queue item 407 * 408 * Free the parts of the soft interface which can not be removed under 409 * rtnl lock (to prevent deadlock situations). 410 */ 411 static void batadv_softif_destroy_finish(struct work_struct *work) 412 { 413 struct batadv_priv *bat_priv; 414 struct net_device *soft_iface; 415 416 bat_priv = container_of(work, struct batadv_priv, 417 cleanup_work); 418 soft_iface = bat_priv->soft_iface; 419 420 batadv_sysfs_del_meshif(soft_iface); 421 422 rtnl_lock(); 423 unregister_netdevice(soft_iface); 424 rtnl_unlock(); 425 } 426 427 /** 428 * batadv_softif_init_late - late stage initialization of soft interface 429 * @dev: registered network device to modify 430 * 431 * Returns error code on failures 432 */ 433 static int batadv_softif_init_late(struct net_device *dev) 434 { 435 struct batadv_priv *bat_priv; 436 int ret; 437 size_t cnt_len = sizeof(uint64_t) * BATADV_CNT_NUM; 438 439 batadv_set_lockdep_class(dev); 440 441 bat_priv = netdev_priv(dev); 442 bat_priv->soft_iface = dev; 443 INIT_WORK(&bat_priv->cleanup_work, batadv_softif_destroy_finish); 444 445 /* batadv_interface_stats() needs to be available as soon as 446 * register_netdevice() has been called 447 */ 448 bat_priv->bat_counters = __alloc_percpu(cnt_len, __alignof__(uint64_t)); 449 if (!bat_priv->bat_counters) 450 return -ENOMEM; 451 452 atomic_set(&bat_priv->aggregated_ogms, 1); 453 atomic_set(&bat_priv->bonding, 0); 454 #ifdef CONFIG_BATMAN_ADV_BLA 455 atomic_set(&bat_priv->bridge_loop_avoidance, 0); 456 #endif 457 #ifdef CONFIG_BATMAN_ADV_DAT 458 atomic_set(&bat_priv->distributed_arp_table, 1); 459 #endif 460 atomic_set(&bat_priv->ap_isolation, 0); 461 atomic_set(&bat_priv->vis_mode, BATADV_VIS_TYPE_CLIENT_UPDATE); 462 atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF); 463 atomic_set(&bat_priv->gw_sel_class, 20); 464 atomic_set(&bat_priv->gw_bandwidth, 41); 465 atomic_set(&bat_priv->orig_interval, 1000); 466 atomic_set(&bat_priv->hop_penalty, 30); 467 #ifdef CONFIG_BATMAN_ADV_DEBUG 468 atomic_set(&bat_priv->log_level, 0); 469 #endif 470 atomic_set(&bat_priv->fragmentation, 1); 471 atomic_set(&bat_priv->bcast_queue_left, BATADV_BCAST_QUEUE_LEN); 472 atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN); 473 474 atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE); 475 atomic_set(&bat_priv->bcast_seqno, 1); 476 atomic_set(&bat_priv->tt.vn, 0); 477 atomic_set(&bat_priv->tt.local_changes, 0); 478 atomic_set(&bat_priv->tt.ogm_append_cnt, 0); 479 #ifdef CONFIG_BATMAN_ADV_BLA 480 atomic_set(&bat_priv->bla.num_requests, 0); 481 #endif 482 bat_priv->tt.last_changeset = NULL; 483 bat_priv->tt.last_changeset_len = 0; 484 485 bat_priv->primary_if = NULL; 486 bat_priv->num_ifaces = 0; 487 488 batadv_nc_init_bat_priv(bat_priv); 489 490 ret = batadv_algo_select(bat_priv, batadv_routing_algo); 491 if (ret < 0) 492 goto free_bat_counters; 493 494 ret = batadv_debugfs_add_meshif(dev); 495 if (ret < 0) 496 goto free_bat_counters; 497 498 ret = batadv_mesh_init(dev); 499 if (ret < 0) 500 goto unreg_debugfs; 501 502 return 0; 503 504 unreg_debugfs: 505 batadv_debugfs_del_meshif(dev); 506 free_bat_counters: 507 free_percpu(bat_priv->bat_counters); 508 509 return ret; 510 } 511 512 /** 513 * batadv_softif_slave_add - Add a slave interface to a batadv_soft_interface 514 * @dev: batadv_soft_interface used as master interface 515 * @slave_dev: net_device which should become the slave interface 516 * 517 * Return 0 if successful or error otherwise. 518 */ 519 static int batadv_softif_slave_add(struct net_device *dev, 520 struct net_device *slave_dev) 521 { 522 struct batadv_hard_iface *hard_iface; 523 int ret = -EINVAL; 524 525 hard_iface = batadv_hardif_get_by_netdev(slave_dev); 526 if (!hard_iface || hard_iface->soft_iface != NULL) 527 goto out; 528 529 ret = batadv_hardif_enable_interface(hard_iface, dev->name); 530 531 out: 532 if (hard_iface) 533 batadv_hardif_free_ref(hard_iface); 534 return ret; 535 } 536 537 /** 538 * batadv_softif_slave_del - Delete a slave iface from a batadv_soft_interface 539 * @dev: batadv_soft_interface used as master interface 540 * @slave_dev: net_device which should be removed from the master interface 541 * 542 * Return 0 if successful or error otherwise. 543 */ 544 static int batadv_softif_slave_del(struct net_device *dev, 545 struct net_device *slave_dev) 546 { 547 struct batadv_hard_iface *hard_iface; 548 int ret = -EINVAL; 549 550 hard_iface = batadv_hardif_get_by_netdev(slave_dev); 551 552 if (!hard_iface || hard_iface->soft_iface != dev) 553 goto out; 554 555 batadv_hardif_disable_interface(hard_iface, BATADV_IF_CLEANUP_KEEP); 556 ret = 0; 557 558 out: 559 if (hard_iface) 560 batadv_hardif_free_ref(hard_iface); 561 return ret; 562 } 563 564 static const struct net_device_ops batadv_netdev_ops = { 565 .ndo_init = batadv_softif_init_late, 566 .ndo_open = batadv_interface_open, 567 .ndo_stop = batadv_interface_release, 568 .ndo_get_stats = batadv_interface_stats, 569 .ndo_set_mac_address = batadv_interface_set_mac_addr, 570 .ndo_change_mtu = batadv_interface_change_mtu, 571 .ndo_start_xmit = batadv_interface_tx, 572 .ndo_validate_addr = eth_validate_addr, 573 .ndo_add_slave = batadv_softif_slave_add, 574 .ndo_del_slave = batadv_softif_slave_del, 575 }; 576 577 /** 578 * batadv_softif_free - Deconstructor of batadv_soft_interface 579 * @dev: Device to cleanup and remove 580 */ 581 static void batadv_softif_free(struct net_device *dev) 582 { 583 batadv_debugfs_del_meshif(dev); 584 batadv_mesh_free(dev); 585 586 /* some scheduled RCU callbacks need the bat_priv struct to accomplish 587 * their tasks. Wait for them all to be finished before freeing the 588 * netdev and its private data (bat_priv) 589 */ 590 rcu_barrier(); 591 592 free_netdev(dev); 593 } 594 595 /** 596 * batadv_softif_init_early - early stage initialization of soft interface 597 * @dev: registered network device to modify 598 */ 599 static void batadv_softif_init_early(struct net_device *dev) 600 { 601 struct batadv_priv *priv = netdev_priv(dev); 602 603 ether_setup(dev); 604 605 dev->netdev_ops = &batadv_netdev_ops; 606 dev->destructor = batadv_softif_free; 607 dev->tx_queue_len = 0; 608 609 /* can't call min_mtu, because the needed variables 610 * have not been initialized yet 611 */ 612 dev->mtu = ETH_DATA_LEN; 613 /* reserve more space in the skbuff for our header */ 614 dev->hard_header_len = BATADV_HEADER_LEN; 615 616 /* generate random address */ 617 eth_hw_addr_random(dev); 618 619 SET_ETHTOOL_OPS(dev, &batadv_ethtool_ops); 620 621 memset(priv, 0, sizeof(*priv)); 622 } 623 624 struct net_device *batadv_softif_create(const char *name) 625 { 626 struct net_device *soft_iface; 627 int ret; 628 629 soft_iface = alloc_netdev(sizeof(struct batadv_priv), name, 630 batadv_softif_init_early); 631 if (!soft_iface) 632 return NULL; 633 634 soft_iface->rtnl_link_ops = &batadv_link_ops; 635 636 ret = register_netdevice(soft_iface); 637 if (ret < 0) { 638 pr_err("Unable to register the batman interface '%s': %i\n", 639 name, ret); 640 free_netdev(soft_iface); 641 return NULL; 642 } 643 644 return soft_iface; 645 } 646 647 /** 648 * batadv_softif_destroy_sysfs - deletion of batadv_soft_interface via sysfs 649 * @soft_iface: the to-be-removed batman-adv interface 650 */ 651 void batadv_softif_destroy_sysfs(struct net_device *soft_iface) 652 { 653 struct batadv_priv *bat_priv = netdev_priv(soft_iface); 654 655 queue_work(batadv_event_workqueue, &bat_priv->cleanup_work); 656 } 657 658 /** 659 * batadv_softif_destroy_netlink - deletion of batadv_soft_interface via netlink 660 * @soft_iface: the to-be-removed batman-adv interface 661 * @head: list pointer 662 */ 663 static void batadv_softif_destroy_netlink(struct net_device *soft_iface, 664 struct list_head *head) 665 { 666 struct batadv_hard_iface *hard_iface; 667 668 list_for_each_entry(hard_iface, &batadv_hardif_list, list) { 669 if (hard_iface->soft_iface == soft_iface) 670 batadv_hardif_disable_interface(hard_iface, 671 BATADV_IF_CLEANUP_KEEP); 672 } 673 674 batadv_sysfs_del_meshif(soft_iface); 675 unregister_netdevice_queue(soft_iface, head); 676 } 677 678 int batadv_softif_is_valid(const struct net_device *net_dev) 679 { 680 if (net_dev->netdev_ops->ndo_start_xmit == batadv_interface_tx) 681 return 1; 682 683 return 0; 684 } 685 686 struct rtnl_link_ops batadv_link_ops __read_mostly = { 687 .kind = "batadv", 688 .priv_size = sizeof(struct batadv_priv), 689 .setup = batadv_softif_init_early, 690 .dellink = batadv_softif_destroy_netlink, 691 }; 692 693 /* ethtool */ 694 static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) 695 { 696 cmd->supported = 0; 697 cmd->advertising = 0; 698 ethtool_cmd_speed_set(cmd, SPEED_10); 699 cmd->duplex = DUPLEX_FULL; 700 cmd->port = PORT_TP; 701 cmd->phy_address = 0; 702 cmd->transceiver = XCVR_INTERNAL; 703 cmd->autoneg = AUTONEG_DISABLE; 704 cmd->maxtxpkt = 0; 705 cmd->maxrxpkt = 0; 706 707 return 0; 708 } 709 710 static void batadv_get_drvinfo(struct net_device *dev, 711 struct ethtool_drvinfo *info) 712 { 713 strlcpy(info->driver, "B.A.T.M.A.N. advanced", sizeof(info->driver)); 714 strlcpy(info->version, BATADV_SOURCE_VERSION, sizeof(info->version)); 715 strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); 716 strlcpy(info->bus_info, "batman", sizeof(info->bus_info)); 717 } 718 719 static u32 batadv_get_msglevel(struct net_device *dev) 720 { 721 return -EOPNOTSUPP; 722 } 723 724 static void batadv_set_msglevel(struct net_device *dev, u32 value) 725 { 726 } 727 728 static u32 batadv_get_link(struct net_device *dev) 729 { 730 return 1; 731 } 732 733 /* Inspired by drivers/net/ethernet/dlink/sundance.c:1702 734 * Declare each description string in struct.name[] to get fixed sized buffer 735 * and compile time checking for strings longer than ETH_GSTRING_LEN. 736 */ 737 static const struct { 738 const char name[ETH_GSTRING_LEN]; 739 } batadv_counters_strings[] = { 740 { "tx" }, 741 { "tx_bytes" }, 742 { "tx_dropped" }, 743 { "rx" }, 744 { "rx_bytes" }, 745 { "forward" }, 746 { "forward_bytes" }, 747 { "mgmt_tx" }, 748 { "mgmt_tx_bytes" }, 749 { "mgmt_rx" }, 750 { "mgmt_rx_bytes" }, 751 { "tt_request_tx" }, 752 { "tt_request_rx" }, 753 { "tt_response_tx" }, 754 { "tt_response_rx" }, 755 { "tt_roam_adv_tx" }, 756 { "tt_roam_adv_rx" }, 757 #ifdef CONFIG_BATMAN_ADV_DAT 758 { "dat_get_tx" }, 759 { "dat_get_rx" }, 760 { "dat_put_tx" }, 761 { "dat_put_rx" }, 762 { "dat_cached_reply_tx" }, 763 #endif 764 #ifdef CONFIG_BATMAN_ADV_NC 765 { "nc_code" }, 766 { "nc_code_bytes" }, 767 { "nc_recode" }, 768 { "nc_recode_bytes" }, 769 { "nc_buffer" }, 770 { "nc_decode" }, 771 { "nc_decode_bytes" }, 772 { "nc_decode_failed" }, 773 { "nc_sniffed" }, 774 #endif 775 }; 776 777 static void batadv_get_strings(struct net_device *dev, uint32_t stringset, 778 uint8_t *data) 779 { 780 if (stringset == ETH_SS_STATS) 781 memcpy(data, batadv_counters_strings, 782 sizeof(batadv_counters_strings)); 783 } 784 785 static void batadv_get_ethtool_stats(struct net_device *dev, 786 struct ethtool_stats *stats, 787 uint64_t *data) 788 { 789 struct batadv_priv *bat_priv = netdev_priv(dev); 790 int i; 791 792 for (i = 0; i < BATADV_CNT_NUM; i++) 793 data[i] = batadv_sum_counter(bat_priv, i); 794 } 795 796 static int batadv_get_sset_count(struct net_device *dev, int stringset) 797 { 798 if (stringset == ETH_SS_STATS) 799 return BATADV_CNT_NUM; 800 801 return -EOPNOTSUPP; 802 } 803