Commit | Line | Data |
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e19f9759 | 1 | /* Copyright (C) 2007-2014 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 SE |
38 | |
39 | ||
0294ca0d SE |
40 | static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd); |
41 | static void batadv_get_drvinfo(struct net_device *dev, | |
42 | struct ethtool_drvinfo *info); | |
43 | static u32 batadv_get_msglevel(struct net_device *dev); | |
44 | static void batadv_set_msglevel(struct net_device *dev, u32 value); | |
45 | static u32 batadv_get_link(struct net_device *dev); | |
f8214865 MH |
46 | static void batadv_get_strings(struct net_device *dev, u32 stringset, u8 *data); |
47 | static void batadv_get_ethtool_stats(struct net_device *dev, | |
48 | struct ethtool_stats *stats, u64 *data); | |
49 | static int batadv_get_sset_count(struct net_device *dev, int stringset); | |
c6c8fea2 | 50 | |
0294ca0d SE |
51 | static const struct ethtool_ops batadv_ethtool_ops = { |
52 | .get_settings = batadv_get_settings, | |
53 | .get_drvinfo = batadv_get_drvinfo, | |
54 | .get_msglevel = batadv_get_msglevel, | |
55 | .set_msglevel = batadv_set_msglevel, | |
56 | .get_link = batadv_get_link, | |
f8214865 MH |
57 | .get_strings = batadv_get_strings, |
58 | .get_ethtool_stats = batadv_get_ethtool_stats, | |
59 | .get_sset_count = batadv_get_sset_count, | |
c6c8fea2 SE |
60 | }; |
61 | ||
04b482a2 | 62 | int batadv_skb_head_push(struct sk_buff *skb, unsigned int len) |
c6c8fea2 SE |
63 | { |
64 | int result; | |
65 | ||
9cfc7bd6 | 66 | /* TODO: We must check if we can release all references to non-payload |
c6c8fea2 SE |
67 | * data using skb_header_release in our skbs to allow skb_cow_header to |
68 | * work optimally. This means that those skbs are not allowed to read | |
69 | * or write any data which is before the current position of skb->data | |
70 | * after that call and thus allow other skbs with the same data buffer | |
71 | * to write freely in that area. | |
72 | */ | |
73 | result = skb_cow_head(skb, len); | |
74 | if (result < 0) | |
75 | return result; | |
76 | ||
77 | skb_push(skb, len); | |
78 | return 0; | |
79 | } | |
80 | ||
0294ca0d | 81 | static int batadv_interface_open(struct net_device *dev) |
c6c8fea2 SE |
82 | { |
83 | netif_start_queue(dev); | |
84 | return 0; | |
85 | } | |
86 | ||
0294ca0d | 87 | static int batadv_interface_release(struct net_device *dev) |
c6c8fea2 SE |
88 | { |
89 | netif_stop_queue(dev); | |
90 | return 0; | |
91 | } | |
92 | ||
0294ca0d | 93 | static struct net_device_stats *batadv_interface_stats(struct net_device *dev) |
c6c8fea2 | 94 | { |
56303d34 | 95 | struct batadv_priv *bat_priv = netdev_priv(dev); |
1c9b0550 ML |
96 | struct net_device_stats *stats = &bat_priv->stats; |
97 | ||
98 | stats->tx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_TX); | |
99 | stats->tx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_TX_BYTES); | |
100 | stats->tx_dropped = batadv_sum_counter(bat_priv, BATADV_CNT_TX_DROPPED); | |
101 | stats->rx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_RX); | |
102 | stats->rx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_RX_BYTES); | |
103 | return stats; | |
c6c8fea2 SE |
104 | } |
105 | ||
0294ca0d | 106 | static int batadv_interface_set_mac_addr(struct net_device *dev, void *p) |
c6c8fea2 | 107 | { |
56303d34 | 108 | struct batadv_priv *bat_priv = netdev_priv(dev); |
c6c8fea2 | 109 | struct sockaddr *addr = p; |
40a3eb33 | 110 | uint8_t old_addr[ETH_ALEN]; |
c6c8fea2 SE |
111 | |
112 | if (!is_valid_ether_addr(addr->sa_data)) | |
113 | return -EADDRNOTAVAIL; | |
114 | ||
8fdd0153 AQ |
115 | ether_addr_copy(old_addr, dev->dev_addr); |
116 | ether_addr_copy(dev->dev_addr, addr->sa_data); | |
40a3eb33 | 117 | |
015758d0 | 118 | /* only modify transtable if it has been initialized before */ |
39c75a51 | 119 | if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE) { |
c018ad3d | 120 | batadv_tt_local_remove(bat_priv, old_addr, BATADV_NO_FLAGS, |
08c36d3e | 121 | "mac address changed", false); |
c018ad3d | 122 | batadv_tt_local_add(dev, addr->sa_data, BATADV_NO_FLAGS, |
9464d071 | 123 | BATADV_NULL_IFINDEX, BATADV_NO_MARK); |
c6c8fea2 SE |
124 | } |
125 | ||
c6c8fea2 SE |
126 | return 0; |
127 | } | |
128 | ||
0294ca0d | 129 | static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu) |
c6c8fea2 SE |
130 | { |
131 | /* check ranges */ | |
9563877e | 132 | if ((new_mtu < 68) || (new_mtu > batadv_hardif_min_mtu(dev))) |
c6c8fea2 SE |
133 | return -EINVAL; |
134 | ||
135 | dev->mtu = new_mtu; | |
136 | ||
137 | return 0; | |
138 | } | |
139 | ||
a4deee1a LL |
140 | /** |
141 | * batadv_interface_set_rx_mode - set the rx mode of a device | |
142 | * @dev: registered network device to modify | |
143 | * | |
144 | * We do not actually need to set any rx filters for the virtual batman | |
145 | * soft interface. However a dummy handler enables a user to set static | |
146 | * multicast listeners for instance. | |
147 | */ | |
148 | static void batadv_interface_set_rx_mode(struct net_device *dev) | |
149 | { | |
150 | } | |
151 | ||
0294ca0d SE |
152 | static int batadv_interface_tx(struct sk_buff *skb, |
153 | struct net_device *soft_iface) | |
c6c8fea2 | 154 | { |
c018ad3d | 155 | struct ethhdr *ethhdr; |
56303d34 SE |
156 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
157 | struct batadv_hard_iface *primary_if = NULL; | |
96412690 | 158 | struct batadv_bcast_packet *bcast_packet; |
293e9338 | 159 | __be16 ethertype = htons(ETH_P_BATMAN); |
4934ab95 SW |
160 | static const uint8_t stp_addr[ETH_ALEN] = {0x01, 0x80, 0xC2, 0x00, |
161 | 0x00, 0x00}; | |
162 | static const uint8_t ectp_addr[ETH_ALEN] = {0xCF, 0x00, 0x00, 0x00, | |
163 | 0x00, 0x00}; | |
6c413b1c AQ |
164 | enum batadv_dhcp_recipient dhcp_rcp = BATADV_DHCP_NO; |
165 | uint8_t *dst_hint = NULL, chaddr[ETH_ALEN]; | |
c018ad3d | 166 | struct vlan_ethhdr *vhdr; |
be7af5cf | 167 | unsigned int header_len = 0; |
c6c8fea2 | 168 | int data_len = skb->len, ret; |
c018ad3d | 169 | unsigned long brd_delay = 1; |
a19d3d85 | 170 | bool do_bcast = false, client_added; |
c018ad3d | 171 | unsigned short vid; |
bbb1f90e | 172 | uint32_t seqno; |
6c413b1c | 173 | int gw_mode; |
1d8ab8d3 LL |
174 | enum batadv_forw_mode forw_mode; |
175 | struct batadv_orig_node *mcast_single_orig = NULL; | |
c6c8fea2 | 176 | |
39c75a51 | 177 | if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) |
c6c8fea2 SE |
178 | goto dropped; |
179 | ||
180 | soft_iface->trans_start = jiffies; | |
c018ad3d | 181 | vid = batadv_get_vid(skb, 0); |
927c2ed7 | 182 | ethhdr = eth_hdr(skb); |
c6c8fea2 SE |
183 | |
184 | switch (ntohs(ethhdr->h_proto)) { | |
185 | case ETH_P_8021Q: | |
927c2ed7 | 186 | vhdr = vlan_eth_hdr(skb); |
c6c8fea2 | 187 | |
7e071c79 | 188 | if (vhdr->h_vlan_encapsulated_proto != ethertype) |
c6c8fea2 SE |
189 | break; |
190 | ||
191 | /* fall through */ | |
af5d4f77 | 192 | case ETH_P_BATMAN: |
c6c8fea2 | 193 | goto dropped; |
a7f6ee94 | 194 | } |
c6c8fea2 | 195 | |
08adf151 | 196 | if (batadv_bla_tx(bat_priv, skb, vid)) |
23721387 SW |
197 | goto dropped; |
198 | ||
9d2c9488 | 199 | /* skb->data might have been reallocated by batadv_bla_tx() */ |
927c2ed7 | 200 | ethhdr = eth_hdr(skb); |
9d2c9488 | 201 | |
a73105b8 | 202 | /* Register the client MAC in the transtable */ |
a19d3d85 ML |
203 | if (!is_multicast_ether_addr(ethhdr->h_source)) { |
204 | client_added = batadv_tt_local_add(soft_iface, ethhdr->h_source, | |
9464d071 AQ |
205 | vid, skb->skb_iif, |
206 | skb->mark); | |
a19d3d85 ML |
207 | if (!client_added) |
208 | goto dropped; | |
209 | } | |
c6c8fea2 | 210 | |
b1a8c04b SW |
211 | /* don't accept stp packets. STP does not help in meshes. |
212 | * better use the bridge loop avoidance ... | |
4934ab95 SW |
213 | * |
214 | * The same goes for ECTP sent at least by some Cisco Switches, | |
215 | * it might confuse the mesh when used with bridge loop avoidance. | |
b1a8c04b | 216 | */ |
1eda58bf | 217 | if (batadv_compare_eth(ethhdr->h_dest, stp_addr)) |
b1a8c04b SW |
218 | goto dropped; |
219 | ||
4934ab95 SW |
220 | if (batadv_compare_eth(ethhdr->h_dest, ectp_addr)) |
221 | goto dropped; | |
222 | ||
6c413b1c | 223 | gw_mode = atomic_read(&bat_priv->gw_mode); |
be7af5cf | 224 | if (is_multicast_ether_addr(ethhdr->h_dest)) { |
6c413b1c AQ |
225 | /* if gw mode is off, broadcast every packet */ |
226 | if (gw_mode == BATADV_GW_MODE_OFF) { | |
227 | do_bcast = true; | |
228 | goto send; | |
be7af5cf | 229 | } |
9d2c9488 | 230 | |
6c413b1c AQ |
231 | dhcp_rcp = batadv_gw_dhcp_recipient_get(skb, &header_len, |
232 | chaddr); | |
233 | /* skb->data may have been modified by | |
234 | * batadv_gw_dhcp_recipient_get() | |
9d2c9488 | 235 | */ |
927c2ed7 | 236 | ethhdr = eth_hdr(skb); |
6c413b1c AQ |
237 | /* if gw_mode is on, broadcast any non-DHCP message. |
238 | * All the DHCP packets are going to be sent as unicast | |
239 | */ | |
240 | if (dhcp_rcp == BATADV_DHCP_NO) { | |
241 | do_bcast = true; | |
242 | goto send; | |
243 | } | |
244 | ||
245 | if (dhcp_rcp == BATADV_DHCP_TO_CLIENT) | |
246 | dst_hint = chaddr; | |
247 | else if ((gw_mode == BATADV_GW_MODE_SERVER) && | |
248 | (dhcp_rcp == BATADV_DHCP_TO_SERVER)) | |
249 | /* gateways should not forward any DHCP message if | |
250 | * directed to a DHCP server | |
251 | */ | |
252 | goto dropped; | |
c6c8fea2 | 253 | |
6c413b1c | 254 | send: |
1d8ab8d3 LL |
255 | if (do_bcast && !is_broadcast_ether_addr(ethhdr->h_dest)) { |
256 | forw_mode = batadv_mcast_forw_mode(bat_priv, skb, | |
257 | &mcast_single_orig); | |
258 | if (forw_mode == BATADV_FORW_NONE) | |
259 | goto dropped; | |
260 | ||
261 | if (forw_mode == BATADV_FORW_SINGLE) | |
262 | do_bcast = false; | |
263 | } | |
264 | } | |
265 | ||
c54f38c9 SW |
266 | batadv_skb_set_priority(skb, 0); |
267 | ||
c6c8fea2 SE |
268 | /* ethernet packet should be broadcasted */ |
269 | if (do_bcast) { | |
e5d89254 | 270 | primary_if = batadv_primary_if_get_selected(bat_priv); |
32ae9b22 | 271 | if (!primary_if) |
c6c8fea2 SE |
272 | goto dropped; |
273 | ||
c384ea3e AQ |
274 | /* in case of ARP request, we do not immediately broadcasti the |
275 | * packet, instead we first wait for DAT to try to retrieve the | |
276 | * correct ARP entry | |
277 | */ | |
278 | if (batadv_dat_snoop_outgoing_arp_request(bat_priv, skb)) | |
279 | brd_delay = msecs_to_jiffies(ARP_REQ_DELAY); | |
280 | ||
04b482a2 | 281 | if (batadv_skb_head_push(skb, sizeof(*bcast_packet)) < 0) |
c6c8fea2 SE |
282 | goto dropped; |
283 | ||
96412690 | 284 | bcast_packet = (struct batadv_bcast_packet *)skb->data; |
a40d9b07 SW |
285 | bcast_packet->version = BATADV_COMPAT_VERSION; |
286 | bcast_packet->ttl = BATADV_TTL; | |
c6c8fea2 SE |
287 | |
288 | /* batman packet type: broadcast */ | |
a40d9b07 | 289 | bcast_packet->packet_type = BATADV_BCAST; |
162d549c | 290 | bcast_packet->reserved = 0; |
c6c8fea2 SE |
291 | |
292 | /* hw address of first interface is the orig mac because only | |
9cfc7bd6 SE |
293 | * this mac is known throughout the mesh |
294 | */ | |
8fdd0153 AQ |
295 | ether_addr_copy(bcast_packet->orig, |
296 | primary_if->net_dev->dev_addr); | |
c6c8fea2 SE |
297 | |
298 | /* set broadcast sequence number */ | |
bbb1f90e SE |
299 | seqno = atomic_inc_return(&bat_priv->bcast_seqno); |
300 | bcast_packet->seqno = htonl(seqno); | |
c6c8fea2 | 301 | |
c384ea3e | 302 | batadv_add_bcast_packet_to_list(bat_priv, skb, brd_delay); |
c6c8fea2 SE |
303 | |
304 | /* a copy is stored in the bcast list, therefore removing | |
9cfc7bd6 SE |
305 | * the original skb. |
306 | */ | |
c6c8fea2 SE |
307 | kfree_skb(skb); |
308 | ||
309 | /* unicast packet */ | |
310 | } else { | |
6c413b1c AQ |
311 | /* DHCP packets going to a server will use the GW feature */ |
312 | if (dhcp_rcp == BATADV_DHCP_TO_SERVER) { | |
9d2c9488 | 313 | ret = batadv_gw_out_of_range(bat_priv, skb); |
be7af5cf ML |
314 | if (ret) |
315 | goto dropped; | |
e300d314 | 316 | ret = batadv_send_skb_via_gw(bat_priv, skb, vid); |
1d8ab8d3 LL |
317 | } else if (mcast_single_orig) { |
318 | ret = batadv_send_skb_unicast(bat_priv, skb, | |
319 | BATADV_UNICAST, 0, | |
320 | mcast_single_orig, vid); | |
6c413b1c AQ |
321 | } else { |
322 | if (batadv_dat_snoop_outgoing_arp_request(bat_priv, | |
323 | skb)) | |
324 | goto dropped; | |
e300d314 | 325 | |
6c413b1c AQ |
326 | batadv_dat_snoop_outgoing_arp_reply(bat_priv, skb); |
327 | ||
328 | ret = batadv_send_skb_via_tt(bat_priv, skb, dst_hint, | |
329 | vid); | |
330 | } | |
e300d314 | 331 | if (ret == NET_XMIT_DROP) |
c6c8fea2 SE |
332 | goto dropped_freed; |
333 | } | |
334 | ||
1c9b0550 ML |
335 | batadv_inc_counter(bat_priv, BATADV_CNT_TX); |
336 | batadv_add_counter(bat_priv, BATADV_CNT_TX_BYTES, data_len); | |
c6c8fea2 SE |
337 | goto end; |
338 | ||
339 | dropped: | |
340 | kfree_skb(skb); | |
341 | dropped_freed: | |
1c9b0550 | 342 | batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED); |
c6c8fea2 | 343 | end: |
32ae9b22 | 344 | if (primary_if) |
e5d89254 | 345 | batadv_hardif_free_ref(primary_if); |
c6c8fea2 SE |
346 | return NETDEV_TX_OK; |
347 | } | |
348 | ||
04b482a2 | 349 | void batadv_interface_rx(struct net_device *soft_iface, |
56303d34 | 350 | struct sk_buff *skb, struct batadv_hard_iface *recv_if, |
37135173 | 351 | int hdr_size, struct batadv_orig_node *orig_node) |
c6c8fea2 | 352 | { |
a40d9b07 | 353 | struct batadv_bcast_packet *batadv_bcast_packet; |
c018ad3d | 354 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
293e9338 | 355 | __be16 ethertype = htons(ETH_P_BATMAN); |
c018ad3d AQ |
356 | struct vlan_ethhdr *vhdr; |
357 | struct ethhdr *ethhdr; | |
358 | unsigned short vid; | |
2d3f6ccc SW |
359 | bool is_bcast; |
360 | ||
a40d9b07 SW |
361 | batadv_bcast_packet = (struct batadv_bcast_packet *)skb->data; |
362 | is_bcast = (batadv_bcast_packet->packet_type == BATADV_BCAST); | |
c6c8fea2 SE |
363 | |
364 | /* check if enough space is available for pulling, and pull */ | |
365 | if (!pskb_may_pull(skb, hdr_size)) | |
366 | goto dropped; | |
367 | ||
368 | skb_pull_rcsum(skb, hdr_size); | |
369 | skb_reset_mac_header(skb); | |
370 | ||
55883fd1 AQ |
371 | /* clean the netfilter state now that the batman-adv header has been |
372 | * removed | |
373 | */ | |
374 | nf_reset(skb); | |
375 | ||
2b1e2cb3 | 376 | vid = batadv_get_vid(skb, 0); |
7ed4be95 | 377 | ethhdr = eth_hdr(skb); |
c6c8fea2 SE |
378 | |
379 | switch (ntohs(ethhdr->h_proto)) { | |
380 | case ETH_P_8021Q: | |
381 | vhdr = (struct vlan_ethhdr *)skb->data; | |
c6c8fea2 | 382 | |
7e071c79 | 383 | if (vhdr->h_vlan_encapsulated_proto != ethertype) |
c6c8fea2 SE |
384 | break; |
385 | ||
386 | /* fall through */ | |
af5d4f77 | 387 | case ETH_P_BATMAN: |
c6c8fea2 SE |
388 | goto dropped; |
389 | } | |
390 | ||
c6c8fea2 SE |
391 | /* skb->dev & skb->pkt_type are set here */ |
392 | if (unlikely(!pskb_may_pull(skb, ETH_HLEN))) | |
393 | goto dropped; | |
394 | skb->protocol = eth_type_trans(skb, soft_iface); | |
395 | ||
25985edc | 396 | /* should not be necessary anymore as we use skb_pull_rcsum() |
c6c8fea2 | 397 | * TODO: please verify this and remove this TODO |
9cfc7bd6 SE |
398 | * -- Dec 21st 2009, Simon Wunderlich |
399 | */ | |
c6c8fea2 | 400 | |
9cfc7bd6 | 401 | /* skb->ip_summed = CHECKSUM_UNNECESSARY; */ |
c6c8fea2 | 402 | |
1c9b0550 ML |
403 | batadv_inc_counter(bat_priv, BATADV_CNT_RX); |
404 | batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES, | |
405 | skb->len + ETH_HLEN); | |
c6c8fea2 SE |
406 | |
407 | soft_iface->last_rx = jiffies; | |
408 | ||
74490f96 AQ |
409 | /* Let the bridge loop avoidance check the packet. If will |
410 | * not handle it, we can safely push it up. | |
411 | */ | |
412 | if (batadv_bla_rx(bat_priv, skb, vid, is_bcast)) | |
413 | goto out; | |
414 | ||
37135173 AQ |
415 | if (orig_node) |
416 | batadv_tt_add_temporary_global_entry(bat_priv, orig_node, | |
c018ad3d | 417 | ethhdr->h_source, vid); |
37135173 | 418 | |
42cb0bef AQ |
419 | if (is_multicast_ether_addr(ethhdr->h_dest)) { |
420 | /* set the mark on broadcast packets if AP isolation is ON and | |
421 | * the packet is coming from an "isolated" client | |
422 | */ | |
423 | if (batadv_vlan_ap_isola_get(bat_priv, vid) && | |
424 | batadv_tt_global_is_isolated(bat_priv, ethhdr->h_source, | |
425 | vid)) { | |
426 | /* save bits in skb->mark not covered by the mask and | |
427 | * apply the mark on the rest | |
428 | */ | |
429 | skb->mark &= ~bat_priv->isolation_mark_mask; | |
430 | skb->mark |= bat_priv->isolation_mark; | |
431 | } | |
432 | } else if (batadv_is_ap_isolated(bat_priv, ethhdr->h_source, | |
433 | ethhdr->h_dest, vid)) { | |
59b699cd | 434 | goto dropped; |
42cb0bef | 435 | } |
59b699cd | 436 | |
c6c8fea2 | 437 | netif_rx(skb); |
ba85fac2 | 438 | goto out; |
c6c8fea2 SE |
439 | |
440 | dropped: | |
441 | kfree_skb(skb); | |
442 | out: | |
443 | return; | |
444 | } | |
445 | ||
5d2c05b2 AQ |
446 | /** |
447 | * batadv_softif_vlan_free_ref - decrease the vlan object refcounter and | |
448 | * possibly free it | |
449 | * @softif_vlan: the vlan object to release | |
450 | */ | |
35df3b29 | 451 | void batadv_softif_vlan_free_ref(struct batadv_softif_vlan *vlan) |
5d2c05b2 | 452 | { |
35df3b29 AQ |
453 | if (atomic_dec_and_test(&vlan->refcount)) { |
454 | spin_lock_bh(&vlan->bat_priv->softif_vlan_list_lock); | |
455 | hlist_del_rcu(&vlan->list); | |
456 | spin_unlock_bh(&vlan->bat_priv->softif_vlan_list_lock); | |
457 | ||
458 | kfree_rcu(vlan, rcu); | |
459 | } | |
5d2c05b2 AQ |
460 | } |
461 | ||
462 | /** | |
463 | * batadv_softif_vlan_get - get the vlan object for a specific vid | |
464 | * @bat_priv: the bat priv with all the soft interface information | |
465 | * @vid: the identifier of the vlan object to retrieve | |
466 | * | |
467 | * Returns the private data of the vlan matching the vid passed as argument or | |
468 | * NULL otherwise. The refcounter of the returned object is incremented by 1. | |
469 | */ | |
90f4435d AQ |
470 | struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, |
471 | unsigned short vid) | |
5d2c05b2 AQ |
472 | { |
473 | struct batadv_softif_vlan *vlan_tmp, *vlan = NULL; | |
474 | ||
475 | rcu_read_lock(); | |
476 | hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) { | |
477 | if (vlan_tmp->vid != vid) | |
478 | continue; | |
479 | ||
480 | if (!atomic_inc_not_zero(&vlan_tmp->refcount)) | |
481 | continue; | |
482 | ||
483 | vlan = vlan_tmp; | |
484 | break; | |
485 | } | |
486 | rcu_read_unlock(); | |
487 | ||
488 | return vlan; | |
489 | } | |
490 | ||
491 | /** | |
492 | * batadv_create_vlan - allocate the needed resources for a new vlan | |
493 | * @bat_priv: the bat priv with all the soft interface information | |
494 | * @vid: the VLAN identifier | |
495 | * | |
496 | * Returns 0 on success, a negative error otherwise. | |
497 | */ | |
498 | int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) | |
499 | { | |
500 | struct batadv_softif_vlan *vlan; | |
90f4435d | 501 | int err; |
5d2c05b2 AQ |
502 | |
503 | vlan = batadv_softif_vlan_get(bat_priv, vid); | |
504 | if (vlan) { | |
505 | batadv_softif_vlan_free_ref(vlan); | |
506 | return -EEXIST; | |
507 | } | |
508 | ||
509 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); | |
510 | if (!vlan) | |
511 | return -ENOMEM; | |
512 | ||
35df3b29 | 513 | vlan->bat_priv = bat_priv; |
5d2c05b2 AQ |
514 | vlan->vid = vid; |
515 | atomic_set(&vlan->refcount, 1); | |
516 | ||
b8cbd81d AQ |
517 | atomic_set(&vlan->ap_isolation, 0); |
518 | ||
90f4435d AQ |
519 | err = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); |
520 | if (err) { | |
521 | kfree(vlan); | |
522 | return err; | |
523 | } | |
524 | ||
35df3b29 AQ |
525 | spin_lock_bh(&bat_priv->softif_vlan_list_lock); |
526 | hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list); | |
527 | spin_unlock_bh(&bat_priv->softif_vlan_list_lock); | |
528 | ||
5d2c05b2 AQ |
529 | /* add a new TT local entry. This one will be marked with the NOPURGE |
530 | * flag | |
531 | */ | |
532 | batadv_tt_local_add(bat_priv->soft_iface, | |
533 | bat_priv->soft_iface->dev_addr, vid, | |
9464d071 | 534 | BATADV_NULL_IFINDEX, BATADV_NO_MARK); |
5d2c05b2 | 535 | |
5d2c05b2 AQ |
536 | return 0; |
537 | } | |
538 | ||
539 | /** | |
540 | * batadv_softif_destroy_vlan - remove and destroy a softif_vlan object | |
541 | * @bat_priv: the bat priv with all the soft interface information | |
542 | * @vlan: the object to remove | |
543 | */ | |
544 | static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv, | |
545 | struct batadv_softif_vlan *vlan) | |
546 | { | |
5d2c05b2 AQ |
547 | /* explicitly remove the associated TT local entry because it is marked |
548 | * with the NOPURGE flag | |
549 | */ | |
550 | batadv_tt_local_remove(bat_priv, bat_priv->soft_iface->dev_addr, | |
551 | vlan->vid, "vlan interface destroyed", false); | |
552 | ||
35df3b29 | 553 | batadv_sysfs_del_vlan(bat_priv, vlan); |
5d2c05b2 AQ |
554 | batadv_softif_vlan_free_ref(vlan); |
555 | } | |
556 | ||
557 | /** | |
558 | * batadv_interface_add_vid - ndo_add_vid API implementation | |
559 | * @dev: the netdev of the mesh interface | |
560 | * @vid: identifier of the new vlan | |
561 | * | |
562 | * Set up all the internal structures for handling the new vlan on top of the | |
563 | * mesh interface | |
564 | * | |
565 | * Returns 0 on success or a negative error code in case of failure. | |
566 | */ | |
567 | static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, | |
568 | unsigned short vid) | |
569 | { | |
570 | struct batadv_priv *bat_priv = netdev_priv(dev); | |
35df3b29 AQ |
571 | struct batadv_softif_vlan *vlan; |
572 | int ret; | |
5d2c05b2 AQ |
573 | |
574 | /* only 802.1Q vlans are supported. | |
575 | * batman-adv does not know how to handle other types | |
576 | */ | |
577 | if (proto != htons(ETH_P_8021Q)) | |
578 | return -EINVAL; | |
579 | ||
580 | vid |= BATADV_VLAN_HAS_TAG; | |
581 | ||
35df3b29 AQ |
582 | /* if a new vlan is getting created and it already exists, it means that |
583 | * it was not deleted yet. batadv_softif_vlan_get() increases the | |
584 | * refcount in order to revive the object. | |
585 | * | |
586 | * if it does not exist then create it. | |
587 | */ | |
588 | vlan = batadv_softif_vlan_get(bat_priv, vid); | |
589 | if (!vlan) | |
590 | return batadv_softif_create_vlan(bat_priv, vid); | |
591 | ||
592 | /* recreate the sysfs object if it was already destroyed (and it should | |
593 | * be since we received a kill_vid() for this vlan | |
594 | */ | |
595 | if (!vlan->kobj) { | |
596 | ret = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); | |
597 | if (ret) { | |
598 | batadv_softif_vlan_free_ref(vlan); | |
599 | return ret; | |
600 | } | |
601 | } | |
602 | ||
603 | /* add a new TT local entry. This one will be marked with the NOPURGE | |
604 | * flag. This must be added again, even if the vlan object already | |
605 | * exists, because the entry was deleted by kill_vid() | |
606 | */ | |
607 | batadv_tt_local_add(bat_priv->soft_iface, | |
608 | bat_priv->soft_iface->dev_addr, vid, | |
609 | BATADV_NULL_IFINDEX, BATADV_NO_MARK); | |
610 | ||
611 | return 0; | |
5d2c05b2 AQ |
612 | } |
613 | ||
614 | /** | |
615 | * batadv_interface_kill_vid - ndo_kill_vid API implementation | |
616 | * @dev: the netdev of the mesh interface | |
617 | * @vid: identifier of the deleted vlan | |
618 | * | |
619 | * Destroy all the internal structures used to handle the vlan identified by vid | |
620 | * on top of the mesh interface | |
621 | * | |
622 | * Returns 0 on success, -EINVAL if the specified prototype is not ETH_P_8021Q | |
623 | * or -ENOENT if the specified vlan id wasn't registered. | |
624 | */ | |
625 | static int batadv_interface_kill_vid(struct net_device *dev, __be16 proto, | |
626 | unsigned short vid) | |
627 | { | |
628 | struct batadv_priv *bat_priv = netdev_priv(dev); | |
629 | struct batadv_softif_vlan *vlan; | |
630 | ||
631 | /* only 802.1Q vlans are supported. batman-adv does not know how to | |
632 | * handle other types | |
633 | */ | |
634 | if (proto != htons(ETH_P_8021Q)) | |
635 | return -EINVAL; | |
636 | ||
637 | vlan = batadv_softif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG); | |
638 | if (!vlan) | |
639 | return -ENOENT; | |
640 | ||
641 | batadv_softif_destroy_vlan(bat_priv, vlan); | |
642 | ||
643 | /* finally free the vlan object */ | |
644 | batadv_softif_vlan_free_ref(vlan); | |
645 | ||
646 | return 0; | |
647 | } | |
648 | ||
36c1d153 SE |
649 | /* batman-adv network devices have devices nesting below it and are a special |
650 | * "super class" of normal network devices; split their locks off into a | |
651 | * separate class since they always nest. | |
652 | */ | |
653 | static struct lock_class_key batadv_netdev_xmit_lock_key; | |
654 | static struct lock_class_key batadv_netdev_addr_lock_key; | |
655 | ||
656 | /** | |
657 | * batadv_set_lockdep_class_one - Set lockdep class for a single tx queue | |
658 | * @dev: device which owns the tx queue | |
659 | * @txq: tx queue to modify | |
660 | * @_unused: always NULL | |
661 | */ | |
662 | static void batadv_set_lockdep_class_one(struct net_device *dev, | |
663 | struct netdev_queue *txq, | |
664 | void *_unused) | |
665 | { | |
666 | lockdep_set_class(&txq->_xmit_lock, &batadv_netdev_xmit_lock_key); | |
667 | } | |
668 | ||
669 | /** | |
670 | * batadv_set_lockdep_class - Set txq and addr_list lockdep class | |
671 | * @dev: network device to modify | |
672 | */ | |
673 | static void batadv_set_lockdep_class(struct net_device *dev) | |
674 | { | |
675 | lockdep_set_class(&dev->addr_list_lock, &batadv_netdev_addr_lock_key); | |
676 | netdev_for_each_tx_queue(dev, batadv_set_lockdep_class_one, NULL); | |
677 | } | |
678 | ||
5bc44dc8 SW |
679 | /** |
680 | * batadv_softif_destroy_finish - cleans up the remains of a softif | |
681 | * @work: work queue item | |
682 | * | |
683 | * Free the parts of the soft interface which can not be removed under | |
684 | * rtnl lock (to prevent deadlock situations). | |
685 | */ | |
686 | static void batadv_softif_destroy_finish(struct work_struct *work) | |
687 | { | |
5d2c05b2 | 688 | struct batadv_softif_vlan *vlan; |
5bc44dc8 SW |
689 | struct batadv_priv *bat_priv; |
690 | struct net_device *soft_iface; | |
691 | ||
692 | bat_priv = container_of(work, struct batadv_priv, | |
693 | cleanup_work); | |
694 | soft_iface = bat_priv->soft_iface; | |
695 | ||
5d2c05b2 AQ |
696 | /* destroy the "untagged" VLAN */ |
697 | vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); | |
698 | if (vlan) { | |
699 | batadv_softif_destroy_vlan(bat_priv, vlan); | |
700 | batadv_softif_vlan_free_ref(vlan); | |
701 | } | |
702 | ||
5bc44dc8 | 703 | batadv_sysfs_del_meshif(soft_iface); |
af63fde5 | 704 | unregister_netdev(soft_iface); |
5bc44dc8 SW |
705 | } |
706 | ||
37130293 SE |
707 | /** |
708 | * batadv_softif_init_late - late stage initialization of soft interface | |
709 | * @dev: registered network device to modify | |
710 | * | |
711 | * Returns error code on failures | |
712 | */ | |
713 | static int batadv_softif_init_late(struct net_device *dev) | |
c6c8fea2 | 714 | { |
56303d34 | 715 | struct batadv_priv *bat_priv; |
ee75ed88 | 716 | uint32_t random_seqno; |
c6c8fea2 | 717 | int ret; |
d69909d2 | 718 | size_t cnt_len = sizeof(uint64_t) * BATADV_CNT_NUM; |
c6c8fea2 | 719 | |
37130293 | 720 | batadv_set_lockdep_class(dev); |
c6c8fea2 | 721 | |
37130293 SE |
722 | bat_priv = netdev_priv(dev); |
723 | bat_priv->soft_iface = dev; | |
5bc44dc8 | 724 | INIT_WORK(&bat_priv->cleanup_work, batadv_softif_destroy_finish); |
1c9b0550 ML |
725 | |
726 | /* batadv_interface_stats() needs to be available as soon as | |
727 | * register_netdevice() has been called | |
728 | */ | |
729 | bat_priv->bat_counters = __alloc_percpu(cnt_len, __alignof__(uint64_t)); | |
730 | if (!bat_priv->bat_counters) | |
37130293 | 731 | return -ENOMEM; |
c6c8fea2 | 732 | |
c6c8fea2 SE |
733 | atomic_set(&bat_priv->aggregated_ogms, 1); |
734 | atomic_set(&bat_priv->bonding, 0); | |
fa706554 | 735 | #ifdef CONFIG_BATMAN_ADV_BLA |
23721387 | 736 | atomic_set(&bat_priv->bridge_loop_avoidance, 0); |
fa706554 | 737 | #endif |
33af49ad AQ |
738 | #ifdef CONFIG_BATMAN_ADV_DAT |
739 | atomic_set(&bat_priv->distributed_arp_table, 1); | |
60432d75 LL |
740 | #endif |
741 | #ifdef CONFIG_BATMAN_ADV_MCAST | |
742 | bat_priv->mcast.flags = BATADV_NO_FLAGS; | |
1d8ab8d3 | 743 | atomic_set(&bat_priv->multicast_mode, 1); |
60432d75 | 744 | atomic_set(&bat_priv->mcast.num_disabled, 0); |
ab49886e | 745 | atomic_set(&bat_priv->mcast.num_want_all_unsnoopables, 0); |
4c8755d6 LL |
746 | atomic_set(&bat_priv->mcast.num_want_all_ipv4, 0); |
747 | atomic_set(&bat_priv->mcast.num_want_all_ipv6, 0); | |
33af49ad | 748 | #endif |
cd646ab1 | 749 | atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF); |
c6c8fea2 | 750 | atomic_set(&bat_priv->gw_sel_class, 20); |
414254e3 ML |
751 | atomic_set(&bat_priv->gw.bandwidth_down, 100); |
752 | atomic_set(&bat_priv->gw.bandwidth_up, 20); | |
c6c8fea2 | 753 | atomic_set(&bat_priv->orig_interval, 1000); |
c0398768 | 754 | atomic_set(&bat_priv->hop_penalty, 15); |
0c430d0d | 755 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
c6c8fea2 | 756 | atomic_set(&bat_priv->log_level, 0); |
0c430d0d | 757 | #endif |
c6c8fea2 | 758 | atomic_set(&bat_priv->fragmentation, 1); |
a19d3d85 | 759 | atomic_set(&bat_priv->packet_size_max, ETH_DATA_LEN); |
42d0b044 SE |
760 | atomic_set(&bat_priv->bcast_queue_left, BATADV_BCAST_QUEUE_LEN); |
761 | atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN); | |
c6c8fea2 | 762 | |
39c75a51 | 763 | atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE); |
c6c8fea2 | 764 | atomic_set(&bat_priv->bcast_seqno, 1); |
807736f6 SE |
765 | atomic_set(&bat_priv->tt.vn, 0); |
766 | atomic_set(&bat_priv->tt.local_changes, 0); | |
767 | atomic_set(&bat_priv->tt.ogm_append_cnt, 0); | |
768 | #ifdef CONFIG_BATMAN_ADV_BLA | |
769 | atomic_set(&bat_priv->bla.num_requests, 0); | |
770 | #endif | |
771 | bat_priv->tt.last_changeset = NULL; | |
772 | bat_priv->tt.last_changeset_len = 0; | |
c42edfe3 AQ |
773 | bat_priv->isolation_mark = 0; |
774 | bat_priv->isolation_mark_mask = 0; | |
c6c8fea2 | 775 | |
ee75ed88 MH |
776 | /* randomize initial seqno to avoid collision */ |
777 | get_random_bytes(&random_seqno, sizeof(random_seqno)); | |
778 | atomic_set(&bat_priv->frag_seqno, random_seqno); | |
779 | ||
c6c8fea2 SE |
780 | bat_priv->primary_if = NULL; |
781 | bat_priv->num_ifaces = 0; | |
c6c8fea2 | 782 | |
d353d8d4 MH |
783 | batadv_nc_init_bat_priv(bat_priv); |
784 | ||
37130293 | 785 | ret = batadv_algo_select(bat_priv, batadv_routing_algo); |
c6c8fea2 | 786 | if (ret < 0) |
37130293 | 787 | goto free_bat_counters; |
c6c8fea2 | 788 | |
37130293 | 789 | ret = batadv_debugfs_add_meshif(dev); |
c6c8fea2 | 790 | if (ret < 0) |
37130293 | 791 | goto free_bat_counters; |
c6c8fea2 | 792 | |
37130293 | 793 | ret = batadv_mesh_init(dev); |
c6c8fea2 SE |
794 | if (ret < 0) |
795 | goto unreg_debugfs; | |
796 | ||
37130293 | 797 | return 0; |
c6c8fea2 SE |
798 | |
799 | unreg_debugfs: | |
37130293 | 800 | batadv_debugfs_del_meshif(dev); |
1c9b0550 ML |
801 | free_bat_counters: |
802 | free_percpu(bat_priv->bat_counters); | |
f69ae770 | 803 | bat_priv->bat_counters = NULL; |
37130293 SE |
804 | |
805 | return ret; | |
806 | } | |
807 | ||
3dbd550b SE |
808 | /** |
809 | * batadv_softif_slave_add - Add a slave interface to a batadv_soft_interface | |
810 | * @dev: batadv_soft_interface used as master interface | |
811 | * @slave_dev: net_device which should become the slave interface | |
812 | * | |
813 | * Return 0 if successful or error otherwise. | |
814 | */ | |
815 | static int batadv_softif_slave_add(struct net_device *dev, | |
816 | struct net_device *slave_dev) | |
817 | { | |
818 | struct batadv_hard_iface *hard_iface; | |
819 | int ret = -EINVAL; | |
820 | ||
821 | hard_iface = batadv_hardif_get_by_netdev(slave_dev); | |
822 | if (!hard_iface || hard_iface->soft_iface != NULL) | |
823 | goto out; | |
824 | ||
825 | ret = batadv_hardif_enable_interface(hard_iface, dev->name); | |
826 | ||
827 | out: | |
828 | if (hard_iface) | |
829 | batadv_hardif_free_ref(hard_iface); | |
830 | return ret; | |
831 | } | |
832 | ||
833 | /** | |
834 | * batadv_softif_slave_del - Delete a slave iface from a batadv_soft_interface | |
835 | * @dev: batadv_soft_interface used as master interface | |
836 | * @slave_dev: net_device which should be removed from the master interface | |
837 | * | |
838 | * Return 0 if successful or error otherwise. | |
839 | */ | |
840 | static int batadv_softif_slave_del(struct net_device *dev, | |
841 | struct net_device *slave_dev) | |
842 | { | |
843 | struct batadv_hard_iface *hard_iface; | |
844 | int ret = -EINVAL; | |
845 | ||
846 | hard_iface = batadv_hardif_get_by_netdev(slave_dev); | |
847 | ||
848 | if (!hard_iface || hard_iface->soft_iface != dev) | |
849 | goto out; | |
850 | ||
851 | batadv_hardif_disable_interface(hard_iface, BATADV_IF_CLEANUP_KEEP); | |
852 | ret = 0; | |
853 | ||
854 | out: | |
855 | if (hard_iface) | |
856 | batadv_hardif_free_ref(hard_iface); | |
857 | return ret; | |
858 | } | |
859 | ||
37130293 SE |
860 | static const struct net_device_ops batadv_netdev_ops = { |
861 | .ndo_init = batadv_softif_init_late, | |
862 | .ndo_open = batadv_interface_open, | |
863 | .ndo_stop = batadv_interface_release, | |
864 | .ndo_get_stats = batadv_interface_stats, | |
5d2c05b2 AQ |
865 | .ndo_vlan_rx_add_vid = batadv_interface_add_vid, |
866 | .ndo_vlan_rx_kill_vid = batadv_interface_kill_vid, | |
37130293 SE |
867 | .ndo_set_mac_address = batadv_interface_set_mac_addr, |
868 | .ndo_change_mtu = batadv_interface_change_mtu, | |
a4deee1a | 869 | .ndo_set_rx_mode = batadv_interface_set_rx_mode, |
37130293 | 870 | .ndo_start_xmit = batadv_interface_tx, |
3dbd550b SE |
871 | .ndo_validate_addr = eth_validate_addr, |
872 | .ndo_add_slave = batadv_softif_slave_add, | |
873 | .ndo_del_slave = batadv_softif_slave_del, | |
37130293 SE |
874 | }; |
875 | ||
b3246020 SE |
876 | /** |
877 | * batadv_softif_free - Deconstructor of batadv_soft_interface | |
878 | * @dev: Device to cleanup and remove | |
879 | */ | |
880 | static void batadv_softif_free(struct net_device *dev) | |
881 | { | |
882 | batadv_debugfs_del_meshif(dev); | |
883 | batadv_mesh_free(dev); | |
0c501345 AQ |
884 | |
885 | /* some scheduled RCU callbacks need the bat_priv struct to accomplish | |
886 | * their tasks. Wait for them all to be finished before freeing the | |
887 | * netdev and its private data (bat_priv) | |
888 | */ | |
889 | rcu_barrier(); | |
890 | ||
b3246020 SE |
891 | free_netdev(dev); |
892 | } | |
893 | ||
37130293 SE |
894 | /** |
895 | * batadv_softif_init_early - early stage initialization of soft interface | |
896 | * @dev: registered network device to modify | |
897 | */ | |
898 | static void batadv_softif_init_early(struct net_device *dev) | |
899 | { | |
900 | struct batadv_priv *priv = netdev_priv(dev); | |
901 | ||
902 | ether_setup(dev); | |
903 | ||
904 | dev->netdev_ops = &batadv_netdev_ops; | |
b3246020 | 905 | dev->destructor = batadv_softif_free; |
5d2c05b2 | 906 | dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
37130293 SE |
907 | dev->tx_queue_len = 0; |
908 | ||
909 | /* can't call min_mtu, because the needed variables | |
910 | * have not been initialized yet | |
911 | */ | |
912 | dev->mtu = ETH_DATA_LEN; | |
913 | /* reserve more space in the skbuff for our header */ | |
411d6ed9 | 914 | dev->hard_header_len = batadv_max_header_len(); |
37130293 SE |
915 | |
916 | /* generate random address */ | |
917 | eth_hw_addr_random(dev); | |
918 | ||
7ad24ea4 | 919 | dev->ethtool_ops = &batadv_ethtool_ops; |
37130293 SE |
920 | |
921 | memset(priv, 0, sizeof(*priv)); | |
922 | } | |
923 | ||
924 | struct net_device *batadv_softif_create(const char *name) | |
925 | { | |
926 | struct net_device *soft_iface; | |
927 | int ret; | |
928 | ||
929 | soft_iface = alloc_netdev(sizeof(struct batadv_priv), name, | |
930 | batadv_softif_init_early); | |
931 | if (!soft_iface) | |
932 | return NULL; | |
933 | ||
a4ac28c0 SE |
934 | soft_iface->rtnl_link_ops = &batadv_link_ops; |
935 | ||
37130293 SE |
936 | ret = register_netdevice(soft_iface); |
937 | if (ret < 0) { | |
938 | pr_err("Unable to register the batman interface '%s': %i\n", | |
939 | name, ret); | |
940 | free_netdev(soft_iface); | |
941 | return NULL; | |
942 | } | |
943 | ||
944 | return soft_iface; | |
c6c8fea2 SE |
945 | } |
946 | ||
e07932ae ML |
947 | /** |
948 | * batadv_softif_destroy_sysfs - deletion of batadv_soft_interface via sysfs | |
949 | * @soft_iface: the to-be-removed batman-adv interface | |
950 | */ | |
951 | void batadv_softif_destroy_sysfs(struct net_device *soft_iface) | |
c6c8fea2 | 952 | { |
5bc44dc8 SW |
953 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
954 | ||
5bc44dc8 | 955 | queue_work(batadv_event_workqueue, &bat_priv->cleanup_work); |
c6c8fea2 SE |
956 | } |
957 | ||
a4ac28c0 SE |
958 | /** |
959 | * batadv_softif_destroy_netlink - deletion of batadv_soft_interface via netlink | |
960 | * @soft_iface: the to-be-removed batman-adv interface | |
961 | * @head: list pointer | |
962 | */ | |
963 | static void batadv_softif_destroy_netlink(struct net_device *soft_iface, | |
964 | struct list_head *head) | |
965 | { | |
966 | struct batadv_hard_iface *hard_iface; | |
967 | ||
968 | list_for_each_entry(hard_iface, &batadv_hardif_list, list) { | |
969 | if (hard_iface->soft_iface == soft_iface) | |
970 | batadv_hardif_disable_interface(hard_iface, | |
971 | BATADV_IF_CLEANUP_KEEP); | |
972 | } | |
973 | ||
974 | batadv_sysfs_del_meshif(soft_iface); | |
975 | unregister_netdevice_queue(soft_iface, head); | |
976 | } | |
977 | ||
04b482a2 | 978 | int batadv_softif_is_valid(const struct net_device *net_dev) |
e44d8fe2 | 979 | { |
0294ca0d | 980 | if (net_dev->netdev_ops->ndo_start_xmit == batadv_interface_tx) |
e44d8fe2 | 981 | return 1; |
e44d8fe2 SE |
982 | |
983 | return 0; | |
984 | } | |
985 | ||
a4ac28c0 SE |
986 | struct rtnl_link_ops batadv_link_ops __read_mostly = { |
987 | .kind = "batadv", | |
988 | .priv_size = sizeof(struct batadv_priv), | |
989 | .setup = batadv_softif_init_early, | |
990 | .dellink = batadv_softif_destroy_netlink, | |
991 | }; | |
992 | ||
c6c8fea2 | 993 | /* ethtool */ |
0294ca0d | 994 | static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
c6c8fea2 SE |
995 | { |
996 | cmd->supported = 0; | |
997 | cmd->advertising = 0; | |
70739497 | 998 | ethtool_cmd_speed_set(cmd, SPEED_10); |
c6c8fea2 SE |
999 | cmd->duplex = DUPLEX_FULL; |
1000 | cmd->port = PORT_TP; | |
1001 | cmd->phy_address = 0; | |
1002 | cmd->transceiver = XCVR_INTERNAL; | |
1003 | cmd->autoneg = AUTONEG_DISABLE; | |
1004 | cmd->maxtxpkt = 0; | |
1005 | cmd->maxrxpkt = 0; | |
1006 | ||
1007 | return 0; | |
1008 | } | |
1009 | ||
0294ca0d SE |
1010 | static void batadv_get_drvinfo(struct net_device *dev, |
1011 | struct ethtool_drvinfo *info) | |
c6c8fea2 | 1012 | { |
7826d43f JP |
1013 | strlcpy(info->driver, "B.A.T.M.A.N. advanced", sizeof(info->driver)); |
1014 | strlcpy(info->version, BATADV_SOURCE_VERSION, sizeof(info->version)); | |
1015 | strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); | |
1016 | strlcpy(info->bus_info, "batman", sizeof(info->bus_info)); | |
c6c8fea2 SE |
1017 | } |
1018 | ||
0294ca0d | 1019 | static u32 batadv_get_msglevel(struct net_device *dev) |
c6c8fea2 SE |
1020 | { |
1021 | return -EOPNOTSUPP; | |
1022 | } | |
1023 | ||
0294ca0d | 1024 | static void batadv_set_msglevel(struct net_device *dev, u32 value) |
c6c8fea2 SE |
1025 | { |
1026 | } | |
1027 | ||
0294ca0d | 1028 | static u32 batadv_get_link(struct net_device *dev) |
c6c8fea2 SE |
1029 | { |
1030 | return 1; | |
1031 | } | |
f8214865 MH |
1032 | |
1033 | /* Inspired by drivers/net/ethernet/dlink/sundance.c:1702 | |
1034 | * Declare each description string in struct.name[] to get fixed sized buffer | |
1035 | * and compile time checking for strings longer than ETH_GSTRING_LEN. | |
1036 | */ | |
1037 | static const struct { | |
1038 | const char name[ETH_GSTRING_LEN]; | |
0294ca0d | 1039 | } batadv_counters_strings[] = { |
1c9b0550 ML |
1040 | { "tx" }, |
1041 | { "tx_bytes" }, | |
1042 | { "tx_dropped" }, | |
1043 | { "rx" }, | |
1044 | { "rx_bytes" }, | |
f8214865 MH |
1045 | { "forward" }, |
1046 | { "forward_bytes" }, | |
1047 | { "mgmt_tx" }, | |
1048 | { "mgmt_tx_bytes" }, | |
1049 | { "mgmt_rx" }, | |
1050 | { "mgmt_rx_bytes" }, | |
ee75ed88 MH |
1051 | { "frag_tx" }, |
1052 | { "frag_tx_bytes" }, | |
610bfc6b MH |
1053 | { "frag_rx" }, |
1054 | { "frag_rx_bytes" }, | |
1055 | { "frag_fwd" }, | |
1056 | { "frag_fwd_bytes" }, | |
f8214865 MH |
1057 | { "tt_request_tx" }, |
1058 | { "tt_request_rx" }, | |
1059 | { "tt_response_tx" }, | |
1060 | { "tt_response_rx" }, | |
1061 | { "tt_roam_adv_tx" }, | |
1062 | { "tt_roam_adv_rx" }, | |
4046b24a MH |
1063 | #ifdef CONFIG_BATMAN_ADV_DAT |
1064 | { "dat_get_tx" }, | |
1065 | { "dat_get_rx" }, | |
1066 | { "dat_put_tx" }, | |
1067 | { "dat_put_rx" }, | |
1068 | { "dat_cached_reply_tx" }, | |
1069 | #endif | |
3c12de9a MH |
1070 | #ifdef CONFIG_BATMAN_ADV_NC |
1071 | { "nc_code" }, | |
1072 | { "nc_code_bytes" }, | |
1073 | { "nc_recode" }, | |
1074 | { "nc_recode_bytes" }, | |
612d2b4f | 1075 | { "nc_buffer" }, |
2df5278b MH |
1076 | { "nc_decode" }, |
1077 | { "nc_decode_bytes" }, | |
1078 | { "nc_decode_failed" }, | |
1079 | { "nc_sniffed" }, | |
3c12de9a | 1080 | #endif |
f8214865 MH |
1081 | }; |
1082 | ||
1083 | static void batadv_get_strings(struct net_device *dev, uint32_t stringset, | |
1084 | uint8_t *data) | |
1085 | { | |
1086 | if (stringset == ETH_SS_STATS) | |
0294ca0d SE |
1087 | memcpy(data, batadv_counters_strings, |
1088 | sizeof(batadv_counters_strings)); | |
f8214865 MH |
1089 | } |
1090 | ||
1091 | static void batadv_get_ethtool_stats(struct net_device *dev, | |
1092 | struct ethtool_stats *stats, | |
1093 | uint64_t *data) | |
1094 | { | |
56303d34 | 1095 | struct batadv_priv *bat_priv = netdev_priv(dev); |
f8214865 MH |
1096 | int i; |
1097 | ||
d69909d2 | 1098 | for (i = 0; i < BATADV_CNT_NUM; i++) |
f8214865 MH |
1099 | data[i] = batadv_sum_counter(bat_priv, i); |
1100 | } | |
1101 | ||
1102 | static int batadv_get_sset_count(struct net_device *dev, int stringset) | |
1103 | { | |
1104 | if (stringset == ETH_SS_STATS) | |
d69909d2 | 1105 | return BATADV_CNT_NUM; |
f8214865 MH |
1106 | |
1107 | return -EOPNOTSUPP; | |
1108 | } |