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9f6446c7 | 1 | /* Copyright (C) 2007-2015 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
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 | |
ebf38fb7 | 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
c6c8fea2 SE |
16 | */ |
17 | ||
18 | #include "main.h" | |
19 | #include "soft-interface.h" | |
20 | #include "hard-interface.h" | |
c384ea3e | 21 | #include "distributed-arp-table.h" |
c6c8fea2 SE |
22 | #include "routing.h" |
23 | #include "send.h" | |
b706b13b | 24 | #include "debugfs.h" |
c6c8fea2 | 25 | #include "translation-table.h" |
c6c8fea2 SE |
26 | #include "hash.h" |
27 | #include "gateway_common.h" | |
28 | #include "gateway_client.h" | |
b706b13b | 29 | #include "sysfs.h" |
43676ab5 | 30 | #include "originator.h" |
c6c8fea2 SE |
31 | #include <linux/slab.h> |
32 | #include <linux/ethtool.h> | |
33 | #include <linux/etherdevice.h> | |
34 | #include <linux/if_vlan.h> | |
1d8ab8d3 | 35 | #include "multicast.h" |
23721387 | 36 | #include "bridge_loop_avoidance.h" |
d353d8d4 | 37 | #include "network-coding.h" |
c6c8fea2 | 38 | |
0294ca0d SE |
39 | static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd); |
40 | static void batadv_get_drvinfo(struct net_device *dev, | |
41 | struct ethtool_drvinfo *info); | |
42 | static u32 batadv_get_msglevel(struct net_device *dev); | |
43 | static void batadv_set_msglevel(struct net_device *dev, u32 value); | |
44 | static u32 batadv_get_link(struct net_device *dev); | |
f8214865 MH |
45 | static void batadv_get_strings(struct net_device *dev, u32 stringset, u8 *data); |
46 | static void batadv_get_ethtool_stats(struct net_device *dev, | |
47 | struct ethtool_stats *stats, u64 *data); | |
48 | static int batadv_get_sset_count(struct net_device *dev, int stringset); | |
c6c8fea2 | 49 | |
0294ca0d SE |
50 | static const struct ethtool_ops batadv_ethtool_ops = { |
51 | .get_settings = batadv_get_settings, | |
52 | .get_drvinfo = batadv_get_drvinfo, | |
53 | .get_msglevel = batadv_get_msglevel, | |
54 | .set_msglevel = batadv_set_msglevel, | |
55 | .get_link = batadv_get_link, | |
f8214865 MH |
56 | .get_strings = batadv_get_strings, |
57 | .get_ethtool_stats = batadv_get_ethtool_stats, | |
58 | .get_sset_count = batadv_get_sset_count, | |
c6c8fea2 SE |
59 | }; |
60 | ||
04b482a2 | 61 | int batadv_skb_head_push(struct sk_buff *skb, unsigned int len) |
c6c8fea2 SE |
62 | { |
63 | int result; | |
64 | ||
9cfc7bd6 | 65 | /* TODO: We must check if we can release all references to non-payload |
c6c8fea2 SE |
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 | ||
0294ca0d | 80 | static int batadv_interface_open(struct net_device *dev) |
c6c8fea2 SE |
81 | { |
82 | netif_start_queue(dev); | |
83 | return 0; | |
84 | } | |
85 | ||
0294ca0d | 86 | static int batadv_interface_release(struct net_device *dev) |
c6c8fea2 SE |
87 | { |
88 | netif_stop_queue(dev); | |
89 | return 0; | |
90 | } | |
91 | ||
0294ca0d | 92 | static struct net_device_stats *batadv_interface_stats(struct net_device *dev) |
c6c8fea2 | 93 | { |
56303d34 | 94 | struct batadv_priv *bat_priv = netdev_priv(dev); |
1c9b0550 ML |
95 | struct net_device_stats *stats = &bat_priv->stats; |
96 | ||
97 | stats->tx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_TX); | |
98 | stats->tx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_TX_BYTES); | |
99 | stats->tx_dropped = batadv_sum_counter(bat_priv, BATADV_CNT_TX_DROPPED); | |
100 | stats->rx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_RX); | |
101 | stats->rx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_RX_BYTES); | |
102 | return stats; | |
c6c8fea2 SE |
103 | } |
104 | ||
0294ca0d | 105 | static int batadv_interface_set_mac_addr(struct net_device *dev, void *p) |
c6c8fea2 | 106 | { |
56303d34 | 107 | struct batadv_priv *bat_priv = netdev_priv(dev); |
c6c8fea2 | 108 | struct sockaddr *addr = p; |
40a3eb33 | 109 | uint8_t old_addr[ETH_ALEN]; |
c6c8fea2 SE |
110 | |
111 | if (!is_valid_ether_addr(addr->sa_data)) | |
112 | return -EADDRNOTAVAIL; | |
113 | ||
8fdd0153 AQ |
114 | ether_addr_copy(old_addr, dev->dev_addr); |
115 | ether_addr_copy(dev->dev_addr, addr->sa_data); | |
40a3eb33 | 116 | |
015758d0 | 117 | /* only modify transtable if it has been initialized before */ |
39c75a51 | 118 | if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE) { |
c018ad3d | 119 | batadv_tt_local_remove(bat_priv, old_addr, BATADV_NO_FLAGS, |
08c36d3e | 120 | "mac address changed", false); |
c018ad3d | 121 | batadv_tt_local_add(dev, addr->sa_data, BATADV_NO_FLAGS, |
9464d071 | 122 | BATADV_NULL_IFINDEX, BATADV_NO_MARK); |
c6c8fea2 SE |
123 | } |
124 | ||
c6c8fea2 SE |
125 | return 0; |
126 | } | |
127 | ||
0294ca0d | 128 | static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu) |
c6c8fea2 SE |
129 | { |
130 | /* check ranges */ | |
9563877e | 131 | if ((new_mtu < 68) || (new_mtu > batadv_hardif_min_mtu(dev))) |
c6c8fea2 SE |
132 | return -EINVAL; |
133 | ||
134 | dev->mtu = new_mtu; | |
135 | ||
136 | return 0; | |
137 | } | |
138 | ||
a4deee1a LL |
139 | /** |
140 | * batadv_interface_set_rx_mode - set the rx mode of a device | |
141 | * @dev: registered network device to modify | |
142 | * | |
143 | * We do not actually need to set any rx filters for the virtual batman | |
144 | * soft interface. However a dummy handler enables a user to set static | |
145 | * multicast listeners for instance. | |
146 | */ | |
147 | static void batadv_interface_set_rx_mode(struct net_device *dev) | |
148 | { | |
149 | } | |
150 | ||
0294ca0d SE |
151 | static int batadv_interface_tx(struct sk_buff *skb, |
152 | struct net_device *soft_iface) | |
c6c8fea2 | 153 | { |
c018ad3d | 154 | struct ethhdr *ethhdr; |
56303d34 SE |
155 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
156 | struct batadv_hard_iface *primary_if = NULL; | |
96412690 | 157 | struct batadv_bcast_packet *bcast_packet; |
293e9338 | 158 | __be16 ethertype = htons(ETH_P_BATMAN); |
4934ab95 SW |
159 | static const uint8_t stp_addr[ETH_ALEN] = {0x01, 0x80, 0xC2, 0x00, |
160 | 0x00, 0x00}; | |
161 | static const uint8_t ectp_addr[ETH_ALEN] = {0xCF, 0x00, 0x00, 0x00, | |
162 | 0x00, 0x00}; | |
6c413b1c AQ |
163 | enum batadv_dhcp_recipient dhcp_rcp = BATADV_DHCP_NO; |
164 | uint8_t *dst_hint = NULL, chaddr[ETH_ALEN]; | |
c018ad3d | 165 | struct vlan_ethhdr *vhdr; |
be7af5cf | 166 | unsigned int header_len = 0; |
c6c8fea2 | 167 | int data_len = skb->len, ret; |
c018ad3d | 168 | unsigned long brd_delay = 1; |
a19d3d85 | 169 | bool do_bcast = false, client_added; |
c018ad3d | 170 | unsigned short vid; |
bbb1f90e | 171 | uint32_t seqno; |
6c413b1c | 172 | int gw_mode; |
1d8ab8d3 LL |
173 | enum batadv_forw_mode forw_mode; |
174 | struct batadv_orig_node *mcast_single_orig = NULL; | |
c6c8fea2 | 175 | |
39c75a51 | 176 | if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) |
c6c8fea2 SE |
177 | goto dropped; |
178 | ||
179 | soft_iface->trans_start = jiffies; | |
c018ad3d | 180 | vid = batadv_get_vid(skb, 0); |
927c2ed7 | 181 | ethhdr = eth_hdr(skb); |
c6c8fea2 SE |
182 | |
183 | switch (ntohs(ethhdr->h_proto)) { | |
184 | case ETH_P_8021Q: | |
927c2ed7 | 185 | vhdr = vlan_eth_hdr(skb); |
c6c8fea2 | 186 | |
7e071c79 | 187 | if (vhdr->h_vlan_encapsulated_proto != ethertype) |
c6c8fea2 SE |
188 | break; |
189 | ||
190 | /* fall through */ | |
af5d4f77 | 191 | case ETH_P_BATMAN: |
c6c8fea2 | 192 | goto dropped; |
a7f6ee94 | 193 | } |
c6c8fea2 | 194 | |
08adf151 | 195 | if (batadv_bla_tx(bat_priv, skb, vid)) |
23721387 SW |
196 | goto dropped; |
197 | ||
9d2c9488 | 198 | /* skb->data might have been reallocated by batadv_bla_tx() */ |
927c2ed7 | 199 | ethhdr = eth_hdr(skb); |
9d2c9488 | 200 | |
a73105b8 | 201 | /* Register the client MAC in the transtable */ |
a19d3d85 ML |
202 | if (!is_multicast_ether_addr(ethhdr->h_source)) { |
203 | client_added = batadv_tt_local_add(soft_iface, ethhdr->h_source, | |
9464d071 AQ |
204 | vid, skb->skb_iif, |
205 | skb->mark); | |
a19d3d85 ML |
206 | if (!client_added) |
207 | goto dropped; | |
208 | } | |
c6c8fea2 | 209 | |
b1a8c04b SW |
210 | /* don't accept stp packets. STP does not help in meshes. |
211 | * better use the bridge loop avoidance ... | |
4934ab95 SW |
212 | * |
213 | * The same goes for ECTP sent at least by some Cisco Switches, | |
214 | * it might confuse the mesh when used with bridge loop avoidance. | |
b1a8c04b | 215 | */ |
1eda58bf | 216 | if (batadv_compare_eth(ethhdr->h_dest, stp_addr)) |
b1a8c04b SW |
217 | goto dropped; |
218 | ||
4934ab95 SW |
219 | if (batadv_compare_eth(ethhdr->h_dest, ectp_addr)) |
220 | goto dropped; | |
221 | ||
6c413b1c | 222 | gw_mode = atomic_read(&bat_priv->gw_mode); |
be7af5cf | 223 | if (is_multicast_ether_addr(ethhdr->h_dest)) { |
6c413b1c AQ |
224 | /* if gw mode is off, broadcast every packet */ |
225 | if (gw_mode == BATADV_GW_MODE_OFF) { | |
226 | do_bcast = true; | |
227 | goto send; | |
be7af5cf | 228 | } |
9d2c9488 | 229 | |
6c413b1c AQ |
230 | dhcp_rcp = batadv_gw_dhcp_recipient_get(skb, &header_len, |
231 | chaddr); | |
232 | /* skb->data may have been modified by | |
233 | * batadv_gw_dhcp_recipient_get() | |
9d2c9488 | 234 | */ |
927c2ed7 | 235 | ethhdr = eth_hdr(skb); |
6c413b1c AQ |
236 | /* if gw_mode is on, broadcast any non-DHCP message. |
237 | * All the DHCP packets are going to be sent as unicast | |
238 | */ | |
239 | if (dhcp_rcp == BATADV_DHCP_NO) { | |
240 | do_bcast = true; | |
241 | goto send; | |
242 | } | |
243 | ||
244 | if (dhcp_rcp == BATADV_DHCP_TO_CLIENT) | |
245 | dst_hint = chaddr; | |
246 | else if ((gw_mode == BATADV_GW_MODE_SERVER) && | |
247 | (dhcp_rcp == BATADV_DHCP_TO_SERVER)) | |
248 | /* gateways should not forward any DHCP message if | |
249 | * directed to a DHCP server | |
250 | */ | |
251 | goto dropped; | |
c6c8fea2 | 252 | |
6c413b1c | 253 | send: |
1d8ab8d3 LL |
254 | if (do_bcast && !is_broadcast_ether_addr(ethhdr->h_dest)) { |
255 | forw_mode = batadv_mcast_forw_mode(bat_priv, skb, | |
256 | &mcast_single_orig); | |
257 | if (forw_mode == BATADV_FORW_NONE) | |
258 | goto dropped; | |
259 | ||
260 | if (forw_mode == BATADV_FORW_SINGLE) | |
261 | do_bcast = false; | |
262 | } | |
263 | } | |
264 | ||
c54f38c9 SW |
265 | batadv_skb_set_priority(skb, 0); |
266 | ||
c6c8fea2 SE |
267 | /* ethernet packet should be broadcasted */ |
268 | if (do_bcast) { | |
e5d89254 | 269 | primary_if = batadv_primary_if_get_selected(bat_priv); |
32ae9b22 | 270 | if (!primary_if) |
c6c8fea2 SE |
271 | goto dropped; |
272 | ||
c384ea3e AQ |
273 | /* in case of ARP request, we do not immediately broadcasti the |
274 | * packet, instead we first wait for DAT to try to retrieve the | |
275 | * correct ARP entry | |
276 | */ | |
277 | if (batadv_dat_snoop_outgoing_arp_request(bat_priv, skb)) | |
278 | brd_delay = msecs_to_jiffies(ARP_REQ_DELAY); | |
279 | ||
04b482a2 | 280 | if (batadv_skb_head_push(skb, sizeof(*bcast_packet)) < 0) |
c6c8fea2 SE |
281 | goto dropped; |
282 | ||
96412690 | 283 | bcast_packet = (struct batadv_bcast_packet *)skb->data; |
a40d9b07 SW |
284 | bcast_packet->version = BATADV_COMPAT_VERSION; |
285 | bcast_packet->ttl = BATADV_TTL; | |
c6c8fea2 SE |
286 | |
287 | /* batman packet type: broadcast */ | |
a40d9b07 | 288 | bcast_packet->packet_type = BATADV_BCAST; |
162d549c | 289 | bcast_packet->reserved = 0; |
c6c8fea2 SE |
290 | |
291 | /* hw address of first interface is the orig mac because only | |
9cfc7bd6 SE |
292 | * this mac is known throughout the mesh |
293 | */ | |
8fdd0153 AQ |
294 | ether_addr_copy(bcast_packet->orig, |
295 | primary_if->net_dev->dev_addr); | |
c6c8fea2 SE |
296 | |
297 | /* set broadcast sequence number */ | |
bbb1f90e SE |
298 | seqno = atomic_inc_return(&bat_priv->bcast_seqno); |
299 | bcast_packet->seqno = htonl(seqno); | |
c6c8fea2 | 300 | |
c384ea3e | 301 | batadv_add_bcast_packet_to_list(bat_priv, skb, brd_delay); |
c6c8fea2 SE |
302 | |
303 | /* a copy is stored in the bcast list, therefore removing | |
9cfc7bd6 SE |
304 | * the original skb. |
305 | */ | |
c6c8fea2 SE |
306 | kfree_skb(skb); |
307 | ||
308 | /* unicast packet */ | |
309 | } else { | |
6c413b1c AQ |
310 | /* DHCP packets going to a server will use the GW feature */ |
311 | if (dhcp_rcp == BATADV_DHCP_TO_SERVER) { | |
9d2c9488 | 312 | ret = batadv_gw_out_of_range(bat_priv, skb); |
be7af5cf ML |
313 | if (ret) |
314 | goto dropped; | |
e300d314 | 315 | ret = batadv_send_skb_via_gw(bat_priv, skb, vid); |
1d8ab8d3 LL |
316 | } else if (mcast_single_orig) { |
317 | ret = batadv_send_skb_unicast(bat_priv, skb, | |
318 | BATADV_UNICAST, 0, | |
319 | mcast_single_orig, vid); | |
6c413b1c AQ |
320 | } else { |
321 | if (batadv_dat_snoop_outgoing_arp_request(bat_priv, | |
322 | skb)) | |
323 | goto dropped; | |
e300d314 | 324 | |
6c413b1c AQ |
325 | batadv_dat_snoop_outgoing_arp_reply(bat_priv, skb); |
326 | ||
327 | ret = batadv_send_skb_via_tt(bat_priv, skb, dst_hint, | |
328 | vid); | |
329 | } | |
e300d314 | 330 | if (ret == NET_XMIT_DROP) |
c6c8fea2 SE |
331 | goto dropped_freed; |
332 | } | |
333 | ||
1c9b0550 ML |
334 | batadv_inc_counter(bat_priv, BATADV_CNT_TX); |
335 | batadv_add_counter(bat_priv, BATADV_CNT_TX_BYTES, data_len); | |
c6c8fea2 SE |
336 | goto end; |
337 | ||
338 | dropped: | |
339 | kfree_skb(skb); | |
340 | dropped_freed: | |
1c9b0550 | 341 | batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED); |
c6c8fea2 | 342 | end: |
32ae9b22 | 343 | if (primary_if) |
e5d89254 | 344 | batadv_hardif_free_ref(primary_if); |
c6c8fea2 SE |
345 | return NETDEV_TX_OK; |
346 | } | |
347 | ||
04b482a2 | 348 | void batadv_interface_rx(struct net_device *soft_iface, |
56303d34 | 349 | struct sk_buff *skb, struct batadv_hard_iface *recv_if, |
37135173 | 350 | int hdr_size, struct batadv_orig_node *orig_node) |
c6c8fea2 | 351 | { |
a40d9b07 | 352 | struct batadv_bcast_packet *batadv_bcast_packet; |
c018ad3d | 353 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
293e9338 | 354 | __be16 ethertype = htons(ETH_P_BATMAN); |
c018ad3d AQ |
355 | struct vlan_ethhdr *vhdr; |
356 | struct ethhdr *ethhdr; | |
357 | unsigned short vid; | |
2d3f6ccc SW |
358 | bool is_bcast; |
359 | ||
a40d9b07 SW |
360 | batadv_bcast_packet = (struct batadv_bcast_packet *)skb->data; |
361 | is_bcast = (batadv_bcast_packet->packet_type == BATADV_BCAST); | |
c6c8fea2 SE |
362 | |
363 | /* check if enough space is available for pulling, and pull */ | |
364 | if (!pskb_may_pull(skb, hdr_size)) | |
365 | goto dropped; | |
366 | ||
367 | skb_pull_rcsum(skb, hdr_size); | |
368 | skb_reset_mac_header(skb); | |
369 | ||
55883fd1 AQ |
370 | /* clean the netfilter state now that the batman-adv header has been |
371 | * removed | |
372 | */ | |
373 | nf_reset(skb); | |
374 | ||
2b1e2cb3 | 375 | vid = batadv_get_vid(skb, 0); |
7ed4be95 | 376 | ethhdr = eth_hdr(skb); |
c6c8fea2 SE |
377 | |
378 | switch (ntohs(ethhdr->h_proto)) { | |
379 | case ETH_P_8021Q: | |
380 | vhdr = (struct vlan_ethhdr *)skb->data; | |
c6c8fea2 | 381 | |
7e071c79 | 382 | if (vhdr->h_vlan_encapsulated_proto != ethertype) |
c6c8fea2 SE |
383 | break; |
384 | ||
385 | /* fall through */ | |
af5d4f77 | 386 | case ETH_P_BATMAN: |
c6c8fea2 SE |
387 | goto dropped; |
388 | } | |
389 | ||
c6c8fea2 SE |
390 | /* skb->dev & skb->pkt_type are set here */ |
391 | if (unlikely(!pskb_may_pull(skb, ETH_HLEN))) | |
392 | goto dropped; | |
393 | skb->protocol = eth_type_trans(skb, soft_iface); | |
394 | ||
25985edc | 395 | /* should not be necessary anymore as we use skb_pull_rcsum() |
c6c8fea2 | 396 | * TODO: please verify this and remove this TODO |
9cfc7bd6 SE |
397 | * -- Dec 21st 2009, Simon Wunderlich |
398 | */ | |
c6c8fea2 | 399 | |
9cfc7bd6 | 400 | /* skb->ip_summed = CHECKSUM_UNNECESSARY; */ |
c6c8fea2 | 401 | |
1c9b0550 ML |
402 | batadv_inc_counter(bat_priv, BATADV_CNT_RX); |
403 | batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES, | |
404 | skb->len + ETH_HLEN); | |
c6c8fea2 SE |
405 | |
406 | soft_iface->last_rx = jiffies; | |
407 | ||
74490f96 AQ |
408 | /* Let the bridge loop avoidance check the packet. If will |
409 | * not handle it, we can safely push it up. | |
410 | */ | |
411 | if (batadv_bla_rx(bat_priv, skb, vid, is_bcast)) | |
412 | goto out; | |
413 | ||
37135173 AQ |
414 | if (orig_node) |
415 | batadv_tt_add_temporary_global_entry(bat_priv, orig_node, | |
c018ad3d | 416 | ethhdr->h_source, vid); |
37135173 | 417 | |
42cb0bef AQ |
418 | if (is_multicast_ether_addr(ethhdr->h_dest)) { |
419 | /* set the mark on broadcast packets if AP isolation is ON and | |
420 | * the packet is coming from an "isolated" client | |
421 | */ | |
422 | if (batadv_vlan_ap_isola_get(bat_priv, vid) && | |
423 | batadv_tt_global_is_isolated(bat_priv, ethhdr->h_source, | |
424 | vid)) { | |
425 | /* save bits in skb->mark not covered by the mask and | |
426 | * apply the mark on the rest | |
427 | */ | |
428 | skb->mark &= ~bat_priv->isolation_mark_mask; | |
429 | skb->mark |= bat_priv->isolation_mark; | |
430 | } | |
431 | } else if (batadv_is_ap_isolated(bat_priv, ethhdr->h_source, | |
432 | ethhdr->h_dest, vid)) { | |
59b699cd | 433 | goto dropped; |
42cb0bef | 434 | } |
59b699cd | 435 | |
c6c8fea2 | 436 | netif_rx(skb); |
ba85fac2 | 437 | goto out; |
c6c8fea2 SE |
438 | |
439 | dropped: | |
440 | kfree_skb(skb); | |
441 | out: | |
442 | return; | |
443 | } | |
444 | ||
5d2c05b2 AQ |
445 | /** |
446 | * batadv_softif_vlan_free_ref - decrease the vlan object refcounter and | |
447 | * possibly free it | |
448 | * @softif_vlan: the vlan object to release | |
449 | */ | |
35df3b29 | 450 | void batadv_softif_vlan_free_ref(struct batadv_softif_vlan *vlan) |
5d2c05b2 | 451 | { |
35df3b29 AQ |
452 | if (atomic_dec_and_test(&vlan->refcount)) { |
453 | spin_lock_bh(&vlan->bat_priv->softif_vlan_list_lock); | |
454 | hlist_del_rcu(&vlan->list); | |
455 | spin_unlock_bh(&vlan->bat_priv->softif_vlan_list_lock); | |
456 | ||
457 | kfree_rcu(vlan, rcu); | |
458 | } | |
5d2c05b2 AQ |
459 | } |
460 | ||
461 | /** | |
462 | * batadv_softif_vlan_get - get the vlan object for a specific vid | |
463 | * @bat_priv: the bat priv with all the soft interface information | |
464 | * @vid: the identifier of the vlan object to retrieve | |
465 | * | |
466 | * Returns the private data of the vlan matching the vid passed as argument or | |
467 | * NULL otherwise. The refcounter of the returned object is incremented by 1. | |
468 | */ | |
90f4435d AQ |
469 | struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, |
470 | unsigned short vid) | |
5d2c05b2 AQ |
471 | { |
472 | struct batadv_softif_vlan *vlan_tmp, *vlan = NULL; | |
473 | ||
474 | rcu_read_lock(); | |
475 | hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) { | |
476 | if (vlan_tmp->vid != vid) | |
477 | continue; | |
478 | ||
479 | if (!atomic_inc_not_zero(&vlan_tmp->refcount)) | |
480 | continue; | |
481 | ||
482 | vlan = vlan_tmp; | |
483 | break; | |
484 | } | |
485 | rcu_read_unlock(); | |
486 | ||
487 | return vlan; | |
488 | } | |
489 | ||
490 | /** | |
491 | * batadv_create_vlan - allocate the needed resources for a new vlan | |
492 | * @bat_priv: the bat priv with all the soft interface information | |
493 | * @vid: the VLAN identifier | |
494 | * | |
495 | * Returns 0 on success, a negative error otherwise. | |
496 | */ | |
497 | int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) | |
498 | { | |
499 | struct batadv_softif_vlan *vlan; | |
90f4435d | 500 | int err; |
5d2c05b2 AQ |
501 | |
502 | vlan = batadv_softif_vlan_get(bat_priv, vid); | |
503 | if (vlan) { | |
504 | batadv_softif_vlan_free_ref(vlan); | |
505 | return -EEXIST; | |
506 | } | |
507 | ||
508 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); | |
509 | if (!vlan) | |
510 | return -ENOMEM; | |
511 | ||
35df3b29 | 512 | vlan->bat_priv = bat_priv; |
5d2c05b2 AQ |
513 | vlan->vid = vid; |
514 | atomic_set(&vlan->refcount, 1); | |
515 | ||
b8cbd81d AQ |
516 | atomic_set(&vlan->ap_isolation, 0); |
517 | ||
90f4435d AQ |
518 | err = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); |
519 | if (err) { | |
520 | kfree(vlan); | |
521 | return err; | |
522 | } | |
523 | ||
35df3b29 AQ |
524 | spin_lock_bh(&bat_priv->softif_vlan_list_lock); |
525 | hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list); | |
526 | spin_unlock_bh(&bat_priv->softif_vlan_list_lock); | |
527 | ||
5d2c05b2 AQ |
528 | /* add a new TT local entry. This one will be marked with the NOPURGE |
529 | * flag | |
530 | */ | |
531 | batadv_tt_local_add(bat_priv->soft_iface, | |
532 | bat_priv->soft_iface->dev_addr, vid, | |
9464d071 | 533 | BATADV_NULL_IFINDEX, BATADV_NO_MARK); |
5d2c05b2 | 534 | |
5d2c05b2 AQ |
535 | return 0; |
536 | } | |
537 | ||
538 | /** | |
539 | * batadv_softif_destroy_vlan - remove and destroy a softif_vlan object | |
540 | * @bat_priv: the bat priv with all the soft interface information | |
541 | * @vlan: the object to remove | |
542 | */ | |
543 | static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv, | |
544 | struct batadv_softif_vlan *vlan) | |
545 | { | |
5d2c05b2 AQ |
546 | /* explicitly remove the associated TT local entry because it is marked |
547 | * with the NOPURGE flag | |
548 | */ | |
549 | batadv_tt_local_remove(bat_priv, bat_priv->soft_iface->dev_addr, | |
550 | vlan->vid, "vlan interface destroyed", false); | |
551 | ||
35df3b29 | 552 | batadv_sysfs_del_vlan(bat_priv, vlan); |
5d2c05b2 AQ |
553 | batadv_softif_vlan_free_ref(vlan); |
554 | } | |
555 | ||
556 | /** | |
557 | * batadv_interface_add_vid - ndo_add_vid API implementation | |
558 | * @dev: the netdev of the mesh interface | |
559 | * @vid: identifier of the new vlan | |
560 | * | |
561 | * Set up all the internal structures for handling the new vlan on top of the | |
562 | * mesh interface | |
563 | * | |
564 | * Returns 0 on success or a negative error code in case of failure. | |
565 | */ | |
566 | static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, | |
567 | unsigned short vid) | |
568 | { | |
569 | struct batadv_priv *bat_priv = netdev_priv(dev); | |
35df3b29 AQ |
570 | struct batadv_softif_vlan *vlan; |
571 | int ret; | |
5d2c05b2 AQ |
572 | |
573 | /* only 802.1Q vlans are supported. | |
574 | * batman-adv does not know how to handle other types | |
575 | */ | |
576 | if (proto != htons(ETH_P_8021Q)) | |
577 | return -EINVAL; | |
578 | ||
579 | vid |= BATADV_VLAN_HAS_TAG; | |
580 | ||
35df3b29 AQ |
581 | /* if a new vlan is getting created and it already exists, it means that |
582 | * it was not deleted yet. batadv_softif_vlan_get() increases the | |
583 | * refcount in order to revive the object. | |
584 | * | |
585 | * if it does not exist then create it. | |
586 | */ | |
587 | vlan = batadv_softif_vlan_get(bat_priv, vid); | |
588 | if (!vlan) | |
589 | return batadv_softif_create_vlan(bat_priv, vid); | |
590 | ||
591 | /* recreate the sysfs object if it was already destroyed (and it should | |
592 | * be since we received a kill_vid() for this vlan | |
593 | */ | |
594 | if (!vlan->kobj) { | |
595 | ret = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); | |
596 | if (ret) { | |
597 | batadv_softif_vlan_free_ref(vlan); | |
598 | return ret; | |
599 | } | |
600 | } | |
601 | ||
602 | /* add a new TT local entry. This one will be marked with the NOPURGE | |
603 | * flag. This must be added again, even if the vlan object already | |
604 | * exists, because the entry was deleted by kill_vid() | |
605 | */ | |
606 | batadv_tt_local_add(bat_priv->soft_iface, | |
607 | bat_priv->soft_iface->dev_addr, vid, | |
608 | BATADV_NULL_IFINDEX, BATADV_NO_MARK); | |
609 | ||
610 | return 0; | |
5d2c05b2 AQ |
611 | } |
612 | ||
613 | /** | |
614 | * batadv_interface_kill_vid - ndo_kill_vid API implementation | |
615 | * @dev: the netdev of the mesh interface | |
616 | * @vid: identifier of the deleted vlan | |
617 | * | |
618 | * Destroy all the internal structures used to handle the vlan identified by vid | |
619 | * on top of the mesh interface | |
620 | * | |
621 | * Returns 0 on success, -EINVAL if the specified prototype is not ETH_P_8021Q | |
622 | * or -ENOENT if the specified vlan id wasn't registered. | |
623 | */ | |
624 | static int batadv_interface_kill_vid(struct net_device *dev, __be16 proto, | |
625 | unsigned short vid) | |
626 | { | |
627 | struct batadv_priv *bat_priv = netdev_priv(dev); | |
628 | struct batadv_softif_vlan *vlan; | |
629 | ||
630 | /* only 802.1Q vlans are supported. batman-adv does not know how to | |
631 | * handle other types | |
632 | */ | |
633 | if (proto != htons(ETH_P_8021Q)) | |
634 | return -EINVAL; | |
635 | ||
636 | vlan = batadv_softif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG); | |
637 | if (!vlan) | |
638 | return -ENOENT; | |
639 | ||
640 | batadv_softif_destroy_vlan(bat_priv, vlan); | |
641 | ||
642 | /* finally free the vlan object */ | |
643 | batadv_softif_vlan_free_ref(vlan); | |
644 | ||
645 | return 0; | |
646 | } | |
647 | ||
36c1d153 SE |
648 | /* batman-adv network devices have devices nesting below it and are a special |
649 | * "super class" of normal network devices; split their locks off into a | |
650 | * separate class since they always nest. | |
651 | */ | |
652 | static struct lock_class_key batadv_netdev_xmit_lock_key; | |
653 | static struct lock_class_key batadv_netdev_addr_lock_key; | |
654 | ||
655 | /** | |
656 | * batadv_set_lockdep_class_one - Set lockdep class for a single tx queue | |
657 | * @dev: device which owns the tx queue | |
658 | * @txq: tx queue to modify | |
659 | * @_unused: always NULL | |
660 | */ | |
661 | static void batadv_set_lockdep_class_one(struct net_device *dev, | |
662 | struct netdev_queue *txq, | |
663 | void *_unused) | |
664 | { | |
665 | lockdep_set_class(&txq->_xmit_lock, &batadv_netdev_xmit_lock_key); | |
666 | } | |
667 | ||
668 | /** | |
669 | * batadv_set_lockdep_class - Set txq and addr_list lockdep class | |
670 | * @dev: network device to modify | |
671 | */ | |
672 | static void batadv_set_lockdep_class(struct net_device *dev) | |
673 | { | |
674 | lockdep_set_class(&dev->addr_list_lock, &batadv_netdev_addr_lock_key); | |
675 | netdev_for_each_tx_queue(dev, batadv_set_lockdep_class_one, NULL); | |
676 | } | |
677 | ||
5bc44dc8 SW |
678 | /** |
679 | * batadv_softif_destroy_finish - cleans up the remains of a softif | |
680 | * @work: work queue item | |
681 | * | |
682 | * Free the parts of the soft interface which can not be removed under | |
683 | * rtnl lock (to prevent deadlock situations). | |
684 | */ | |
685 | static void batadv_softif_destroy_finish(struct work_struct *work) | |
686 | { | |
5d2c05b2 | 687 | struct batadv_softif_vlan *vlan; |
5bc44dc8 SW |
688 | struct batadv_priv *bat_priv; |
689 | struct net_device *soft_iface; | |
690 | ||
691 | bat_priv = container_of(work, struct batadv_priv, | |
692 | cleanup_work); | |
693 | soft_iface = bat_priv->soft_iface; | |
694 | ||
5d2c05b2 AQ |
695 | /* destroy the "untagged" VLAN */ |
696 | vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); | |
697 | if (vlan) { | |
698 | batadv_softif_destroy_vlan(bat_priv, vlan); | |
699 | batadv_softif_vlan_free_ref(vlan); | |
700 | } | |
701 | ||
5bc44dc8 | 702 | batadv_sysfs_del_meshif(soft_iface); |
af63fde5 | 703 | unregister_netdev(soft_iface); |
5bc44dc8 SW |
704 | } |
705 | ||
37130293 SE |
706 | /** |
707 | * batadv_softif_init_late - late stage initialization of soft interface | |
708 | * @dev: registered network device to modify | |
709 | * | |
710 | * Returns error code on failures | |
711 | */ | |
712 | static int batadv_softif_init_late(struct net_device *dev) | |
c6c8fea2 | 713 | { |
56303d34 | 714 | struct batadv_priv *bat_priv; |
ee75ed88 | 715 | uint32_t random_seqno; |
c6c8fea2 | 716 | int ret; |
d69909d2 | 717 | size_t cnt_len = sizeof(uint64_t) * BATADV_CNT_NUM; |
c6c8fea2 | 718 | |
37130293 | 719 | batadv_set_lockdep_class(dev); |
c6c8fea2 | 720 | |
37130293 SE |
721 | bat_priv = netdev_priv(dev); |
722 | bat_priv->soft_iface = dev; | |
5bc44dc8 | 723 | INIT_WORK(&bat_priv->cleanup_work, batadv_softif_destroy_finish); |
1c9b0550 ML |
724 | |
725 | /* batadv_interface_stats() needs to be available as soon as | |
726 | * register_netdevice() has been called | |
727 | */ | |
728 | bat_priv->bat_counters = __alloc_percpu(cnt_len, __alignof__(uint64_t)); | |
729 | if (!bat_priv->bat_counters) | |
37130293 | 730 | return -ENOMEM; |
c6c8fea2 | 731 | |
c6c8fea2 SE |
732 | atomic_set(&bat_priv->aggregated_ogms, 1); |
733 | atomic_set(&bat_priv->bonding, 0); | |
fa706554 | 734 | #ifdef CONFIG_BATMAN_ADV_BLA |
dab7b621 | 735 | atomic_set(&bat_priv->bridge_loop_avoidance, 1); |
fa706554 | 736 | #endif |
33af49ad AQ |
737 | #ifdef CONFIG_BATMAN_ADV_DAT |
738 | atomic_set(&bat_priv->distributed_arp_table, 1); | |
60432d75 LL |
739 | #endif |
740 | #ifdef CONFIG_BATMAN_ADV_MCAST | |
741 | bat_priv->mcast.flags = BATADV_NO_FLAGS; | |
1d8ab8d3 | 742 | atomic_set(&bat_priv->multicast_mode, 1); |
60432d75 | 743 | atomic_set(&bat_priv->mcast.num_disabled, 0); |
ab49886e | 744 | atomic_set(&bat_priv->mcast.num_want_all_unsnoopables, 0); |
4c8755d6 LL |
745 | atomic_set(&bat_priv->mcast.num_want_all_ipv4, 0); |
746 | atomic_set(&bat_priv->mcast.num_want_all_ipv6, 0); | |
33af49ad | 747 | #endif |
cd646ab1 | 748 | atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF); |
c6c8fea2 | 749 | atomic_set(&bat_priv->gw_sel_class, 20); |
414254e3 ML |
750 | atomic_set(&bat_priv->gw.bandwidth_down, 100); |
751 | atomic_set(&bat_priv->gw.bandwidth_up, 20); | |
c6c8fea2 | 752 | atomic_set(&bat_priv->orig_interval, 1000); |
e03366ea | 753 | atomic_set(&bat_priv->hop_penalty, 30); |
0c430d0d | 754 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
c6c8fea2 | 755 | atomic_set(&bat_priv->log_level, 0); |
0c430d0d | 756 | #endif |
c6c8fea2 | 757 | atomic_set(&bat_priv->fragmentation, 1); |
a19d3d85 | 758 | atomic_set(&bat_priv->packet_size_max, ETH_DATA_LEN); |
42d0b044 SE |
759 | atomic_set(&bat_priv->bcast_queue_left, BATADV_BCAST_QUEUE_LEN); |
760 | atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN); | |
c6c8fea2 | 761 | |
39c75a51 | 762 | atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE); |
c6c8fea2 | 763 | atomic_set(&bat_priv->bcast_seqno, 1); |
807736f6 SE |
764 | atomic_set(&bat_priv->tt.vn, 0); |
765 | atomic_set(&bat_priv->tt.local_changes, 0); | |
766 | atomic_set(&bat_priv->tt.ogm_append_cnt, 0); | |
767 | #ifdef CONFIG_BATMAN_ADV_BLA | |
768 | atomic_set(&bat_priv->bla.num_requests, 0); | |
769 | #endif | |
770 | bat_priv->tt.last_changeset = NULL; | |
771 | bat_priv->tt.last_changeset_len = 0; | |
c42edfe3 AQ |
772 | bat_priv->isolation_mark = 0; |
773 | bat_priv->isolation_mark_mask = 0; | |
c6c8fea2 | 774 | |
ee75ed88 MH |
775 | /* randomize initial seqno to avoid collision */ |
776 | get_random_bytes(&random_seqno, sizeof(random_seqno)); | |
777 | atomic_set(&bat_priv->frag_seqno, random_seqno); | |
778 | ||
c6c8fea2 SE |
779 | bat_priv->primary_if = NULL; |
780 | bat_priv->num_ifaces = 0; | |
c6c8fea2 | 781 | |
d353d8d4 MH |
782 | batadv_nc_init_bat_priv(bat_priv); |
783 | ||
37130293 | 784 | ret = batadv_algo_select(bat_priv, batadv_routing_algo); |
c6c8fea2 | 785 | if (ret < 0) |
37130293 | 786 | goto free_bat_counters; |
c6c8fea2 | 787 | |
37130293 | 788 | ret = batadv_debugfs_add_meshif(dev); |
c6c8fea2 | 789 | if (ret < 0) |
37130293 | 790 | goto free_bat_counters; |
c6c8fea2 | 791 | |
37130293 | 792 | ret = batadv_mesh_init(dev); |
c6c8fea2 SE |
793 | if (ret < 0) |
794 | goto unreg_debugfs; | |
795 | ||
37130293 | 796 | return 0; |
c6c8fea2 SE |
797 | |
798 | unreg_debugfs: | |
37130293 | 799 | batadv_debugfs_del_meshif(dev); |
1c9b0550 ML |
800 | free_bat_counters: |
801 | free_percpu(bat_priv->bat_counters); | |
f69ae770 | 802 | bat_priv->bat_counters = NULL; |
37130293 SE |
803 | |
804 | return ret; | |
805 | } | |
806 | ||
3dbd550b SE |
807 | /** |
808 | * batadv_softif_slave_add - Add a slave interface to a batadv_soft_interface | |
809 | * @dev: batadv_soft_interface used as master interface | |
810 | * @slave_dev: net_device which should become the slave interface | |
811 | * | |
812 | * Return 0 if successful or error otherwise. | |
813 | */ | |
814 | static int batadv_softif_slave_add(struct net_device *dev, | |
815 | struct net_device *slave_dev) | |
816 | { | |
817 | struct batadv_hard_iface *hard_iface; | |
818 | int ret = -EINVAL; | |
819 | ||
820 | hard_iface = batadv_hardif_get_by_netdev(slave_dev); | |
00f548bf | 821 | if (!hard_iface || hard_iface->soft_iface) |
3dbd550b SE |
822 | goto out; |
823 | ||
824 | ret = batadv_hardif_enable_interface(hard_iface, dev->name); | |
825 | ||
826 | out: | |
827 | if (hard_iface) | |
828 | batadv_hardif_free_ref(hard_iface); | |
829 | return ret; | |
830 | } | |
831 | ||
832 | /** | |
833 | * batadv_softif_slave_del - Delete a slave iface from a batadv_soft_interface | |
834 | * @dev: batadv_soft_interface used as master interface | |
835 | * @slave_dev: net_device which should be removed from the master interface | |
836 | * | |
837 | * Return 0 if successful or error otherwise. | |
838 | */ | |
839 | static int batadv_softif_slave_del(struct net_device *dev, | |
840 | struct net_device *slave_dev) | |
841 | { | |
842 | struct batadv_hard_iface *hard_iface; | |
843 | int ret = -EINVAL; | |
844 | ||
845 | hard_iface = batadv_hardif_get_by_netdev(slave_dev); | |
846 | ||
847 | if (!hard_iface || hard_iface->soft_iface != dev) | |
848 | goto out; | |
849 | ||
850 | batadv_hardif_disable_interface(hard_iface, BATADV_IF_CLEANUP_KEEP); | |
851 | ret = 0; | |
852 | ||
853 | out: | |
854 | if (hard_iface) | |
855 | batadv_hardif_free_ref(hard_iface); | |
856 | return ret; | |
857 | } | |
858 | ||
37130293 SE |
859 | static const struct net_device_ops batadv_netdev_ops = { |
860 | .ndo_init = batadv_softif_init_late, | |
861 | .ndo_open = batadv_interface_open, | |
862 | .ndo_stop = batadv_interface_release, | |
863 | .ndo_get_stats = batadv_interface_stats, | |
5d2c05b2 AQ |
864 | .ndo_vlan_rx_add_vid = batadv_interface_add_vid, |
865 | .ndo_vlan_rx_kill_vid = batadv_interface_kill_vid, | |
37130293 SE |
866 | .ndo_set_mac_address = batadv_interface_set_mac_addr, |
867 | .ndo_change_mtu = batadv_interface_change_mtu, | |
a4deee1a | 868 | .ndo_set_rx_mode = batadv_interface_set_rx_mode, |
37130293 | 869 | .ndo_start_xmit = batadv_interface_tx, |
3dbd550b SE |
870 | .ndo_validate_addr = eth_validate_addr, |
871 | .ndo_add_slave = batadv_softif_slave_add, | |
872 | .ndo_del_slave = batadv_softif_slave_del, | |
37130293 SE |
873 | }; |
874 | ||
b3246020 SE |
875 | /** |
876 | * batadv_softif_free - Deconstructor of batadv_soft_interface | |
877 | * @dev: Device to cleanup and remove | |
878 | */ | |
879 | static void batadv_softif_free(struct net_device *dev) | |
880 | { | |
881 | batadv_debugfs_del_meshif(dev); | |
882 | batadv_mesh_free(dev); | |
0c501345 AQ |
883 | |
884 | /* some scheduled RCU callbacks need the bat_priv struct to accomplish | |
885 | * their tasks. Wait for them all to be finished before freeing the | |
886 | * netdev and its private data (bat_priv) | |
887 | */ | |
888 | rcu_barrier(); | |
889 | ||
b3246020 SE |
890 | free_netdev(dev); |
891 | } | |
892 | ||
37130293 SE |
893 | /** |
894 | * batadv_softif_init_early - early stage initialization of soft interface | |
895 | * @dev: registered network device to modify | |
896 | */ | |
897 | static void batadv_softif_init_early(struct net_device *dev) | |
898 | { | |
899 | struct batadv_priv *priv = netdev_priv(dev); | |
900 | ||
901 | ether_setup(dev); | |
902 | ||
903 | dev->netdev_ops = &batadv_netdev_ops; | |
b3246020 | 904 | dev->destructor = batadv_softif_free; |
5d2c05b2 | 905 | dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
37130293 SE |
906 | dev->tx_queue_len = 0; |
907 | ||
908 | /* can't call min_mtu, because the needed variables | |
909 | * have not been initialized yet | |
910 | */ | |
911 | dev->mtu = ETH_DATA_LEN; | |
912 | /* reserve more space in the skbuff for our header */ | |
411d6ed9 | 913 | dev->hard_header_len = batadv_max_header_len(); |
37130293 SE |
914 | |
915 | /* generate random address */ | |
916 | eth_hw_addr_random(dev); | |
917 | ||
7ad24ea4 | 918 | dev->ethtool_ops = &batadv_ethtool_ops; |
37130293 SE |
919 | |
920 | memset(priv, 0, sizeof(*priv)); | |
921 | } | |
922 | ||
923 | struct net_device *batadv_softif_create(const char *name) | |
924 | { | |
925 | struct net_device *soft_iface; | |
926 | int ret; | |
927 | ||
928 | soft_iface = alloc_netdev(sizeof(struct batadv_priv), name, | |
c835a677 | 929 | NET_NAME_UNKNOWN, batadv_softif_init_early); |
37130293 SE |
930 | if (!soft_iface) |
931 | return NULL; | |
932 | ||
a4ac28c0 SE |
933 | soft_iface->rtnl_link_ops = &batadv_link_ops; |
934 | ||
37130293 SE |
935 | ret = register_netdevice(soft_iface); |
936 | if (ret < 0) { | |
937 | pr_err("Unable to register the batman interface '%s': %i\n", | |
938 | name, ret); | |
939 | free_netdev(soft_iface); | |
940 | return NULL; | |
941 | } | |
942 | ||
943 | return soft_iface; | |
c6c8fea2 SE |
944 | } |
945 | ||
e07932ae ML |
946 | /** |
947 | * batadv_softif_destroy_sysfs - deletion of batadv_soft_interface via sysfs | |
948 | * @soft_iface: the to-be-removed batman-adv interface | |
949 | */ | |
950 | void batadv_softif_destroy_sysfs(struct net_device *soft_iface) | |
c6c8fea2 | 951 | { |
5bc44dc8 SW |
952 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
953 | ||
5bc44dc8 | 954 | queue_work(batadv_event_workqueue, &bat_priv->cleanup_work); |
c6c8fea2 SE |
955 | } |
956 | ||
a4ac28c0 SE |
957 | /** |
958 | * batadv_softif_destroy_netlink - deletion of batadv_soft_interface via netlink | |
959 | * @soft_iface: the to-be-removed batman-adv interface | |
960 | * @head: list pointer | |
961 | */ | |
962 | static void batadv_softif_destroy_netlink(struct net_device *soft_iface, | |
963 | struct list_head *head) | |
964 | { | |
965 | struct batadv_hard_iface *hard_iface; | |
966 | ||
967 | list_for_each_entry(hard_iface, &batadv_hardif_list, list) { | |
968 | if (hard_iface->soft_iface == soft_iface) | |
969 | batadv_hardif_disable_interface(hard_iface, | |
970 | BATADV_IF_CLEANUP_KEEP); | |
971 | } | |
972 | ||
973 | batadv_sysfs_del_meshif(soft_iface); | |
974 | unregister_netdevice_queue(soft_iface, head); | |
975 | } | |
976 | ||
04b482a2 | 977 | int batadv_softif_is_valid(const struct net_device *net_dev) |
e44d8fe2 | 978 | { |
0294ca0d | 979 | if (net_dev->netdev_ops->ndo_start_xmit == batadv_interface_tx) |
e44d8fe2 | 980 | return 1; |
e44d8fe2 SE |
981 | |
982 | return 0; | |
983 | } | |
984 | ||
a4ac28c0 SE |
985 | struct rtnl_link_ops batadv_link_ops __read_mostly = { |
986 | .kind = "batadv", | |
987 | .priv_size = sizeof(struct batadv_priv), | |
988 | .setup = batadv_softif_init_early, | |
989 | .dellink = batadv_softif_destroy_netlink, | |
990 | }; | |
991 | ||
c6c8fea2 | 992 | /* ethtool */ |
0294ca0d | 993 | static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
c6c8fea2 SE |
994 | { |
995 | cmd->supported = 0; | |
996 | cmd->advertising = 0; | |
70739497 | 997 | ethtool_cmd_speed_set(cmd, SPEED_10); |
c6c8fea2 SE |
998 | cmd->duplex = DUPLEX_FULL; |
999 | cmd->port = PORT_TP; | |
1000 | cmd->phy_address = 0; | |
1001 | cmd->transceiver = XCVR_INTERNAL; | |
1002 | cmd->autoneg = AUTONEG_DISABLE; | |
1003 | cmd->maxtxpkt = 0; | |
1004 | cmd->maxrxpkt = 0; | |
1005 | ||
1006 | return 0; | |
1007 | } | |
1008 | ||
0294ca0d SE |
1009 | static void batadv_get_drvinfo(struct net_device *dev, |
1010 | struct ethtool_drvinfo *info) | |
c6c8fea2 | 1011 | { |
7826d43f JP |
1012 | strlcpy(info->driver, "B.A.T.M.A.N. advanced", sizeof(info->driver)); |
1013 | strlcpy(info->version, BATADV_SOURCE_VERSION, sizeof(info->version)); | |
1014 | strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); | |
1015 | strlcpy(info->bus_info, "batman", sizeof(info->bus_info)); | |
c6c8fea2 SE |
1016 | } |
1017 | ||
0294ca0d | 1018 | static u32 batadv_get_msglevel(struct net_device *dev) |
c6c8fea2 SE |
1019 | { |
1020 | return -EOPNOTSUPP; | |
1021 | } | |
1022 | ||
0294ca0d | 1023 | static void batadv_set_msglevel(struct net_device *dev, u32 value) |
c6c8fea2 SE |
1024 | { |
1025 | } | |
1026 | ||
0294ca0d | 1027 | static u32 batadv_get_link(struct net_device *dev) |
c6c8fea2 SE |
1028 | { |
1029 | return 1; | |
1030 | } | |
f8214865 MH |
1031 | |
1032 | /* Inspired by drivers/net/ethernet/dlink/sundance.c:1702 | |
1033 | * Declare each description string in struct.name[] to get fixed sized buffer | |
1034 | * and compile time checking for strings longer than ETH_GSTRING_LEN. | |
1035 | */ | |
1036 | static const struct { | |
1037 | const char name[ETH_GSTRING_LEN]; | |
0294ca0d | 1038 | } batadv_counters_strings[] = { |
1c9b0550 ML |
1039 | { "tx" }, |
1040 | { "tx_bytes" }, | |
1041 | { "tx_dropped" }, | |
1042 | { "rx" }, | |
1043 | { "rx_bytes" }, | |
f8214865 MH |
1044 | { "forward" }, |
1045 | { "forward_bytes" }, | |
1046 | { "mgmt_tx" }, | |
1047 | { "mgmt_tx_bytes" }, | |
1048 | { "mgmt_rx" }, | |
1049 | { "mgmt_rx_bytes" }, | |
ee75ed88 MH |
1050 | { "frag_tx" }, |
1051 | { "frag_tx_bytes" }, | |
610bfc6b MH |
1052 | { "frag_rx" }, |
1053 | { "frag_rx_bytes" }, | |
1054 | { "frag_fwd" }, | |
1055 | { "frag_fwd_bytes" }, | |
f8214865 MH |
1056 | { "tt_request_tx" }, |
1057 | { "tt_request_rx" }, | |
1058 | { "tt_response_tx" }, | |
1059 | { "tt_response_rx" }, | |
1060 | { "tt_roam_adv_tx" }, | |
1061 | { "tt_roam_adv_rx" }, | |
4046b24a MH |
1062 | #ifdef CONFIG_BATMAN_ADV_DAT |
1063 | { "dat_get_tx" }, | |
1064 | { "dat_get_rx" }, | |
1065 | { "dat_put_tx" }, | |
1066 | { "dat_put_rx" }, | |
1067 | { "dat_cached_reply_tx" }, | |
1068 | #endif | |
3c12de9a MH |
1069 | #ifdef CONFIG_BATMAN_ADV_NC |
1070 | { "nc_code" }, | |
1071 | { "nc_code_bytes" }, | |
1072 | { "nc_recode" }, | |
1073 | { "nc_recode_bytes" }, | |
612d2b4f | 1074 | { "nc_buffer" }, |
2df5278b MH |
1075 | { "nc_decode" }, |
1076 | { "nc_decode_bytes" }, | |
1077 | { "nc_decode_failed" }, | |
1078 | { "nc_sniffed" }, | |
3c12de9a | 1079 | #endif |
f8214865 MH |
1080 | }; |
1081 | ||
1082 | static void batadv_get_strings(struct net_device *dev, uint32_t stringset, | |
1083 | uint8_t *data) | |
1084 | { | |
1085 | if (stringset == ETH_SS_STATS) | |
0294ca0d SE |
1086 | memcpy(data, batadv_counters_strings, |
1087 | sizeof(batadv_counters_strings)); | |
f8214865 MH |
1088 | } |
1089 | ||
1090 | static void batadv_get_ethtool_stats(struct net_device *dev, | |
1091 | struct ethtool_stats *stats, | |
1092 | uint64_t *data) | |
1093 | { | |
56303d34 | 1094 | struct batadv_priv *bat_priv = netdev_priv(dev); |
f8214865 MH |
1095 | int i; |
1096 | ||
d69909d2 | 1097 | for (i = 0; i < BATADV_CNT_NUM; i++) |
f8214865 MH |
1098 | data[i] = batadv_sum_counter(bat_priv, i); |
1099 | } | |
1100 | ||
1101 | static int batadv_get_sset_count(struct net_device *dev, int stringset) | |
1102 | { | |
1103 | if (stringset == ETH_SS_STATS) | |
d69909d2 | 1104 | return BATADV_CNT_NUM; |
f8214865 MH |
1105 | |
1106 | return -EOPNOTSUPP; | |
1107 | } |