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0b873931 | 1 | /* Copyright (C) 2007-2013 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> | |
23721387 | 35 | #include "bridge_loop_avoidance.h" |
d353d8d4 | 36 | #include "network-coding.h" |
c6c8fea2 SE |
37 | |
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 | ||
40a3eb33 D |
114 | memcpy(old_addr, dev->dev_addr, ETH_ALEN); |
115 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); | |
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 AQ |
121 | batadv_tt_local_add(dev, addr->sa_data, BATADV_NO_FLAGS, |
122 | BATADV_NULL_IFINDEX); | |
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; |
c6c8fea2 | 173 | |
39c75a51 | 174 | if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) |
c6c8fea2 SE |
175 | goto dropped; |
176 | ||
177 | soft_iface->trans_start = jiffies; | |
c018ad3d AQ |
178 | vid = batadv_get_vid(skb, 0); |
179 | ethhdr = (struct ethhdr *)skb->data; | |
c6c8fea2 SE |
180 | |
181 | switch (ntohs(ethhdr->h_proto)) { | |
182 | case ETH_P_8021Q: | |
183 | vhdr = (struct vlan_ethhdr *)skb->data; | |
c6c8fea2 | 184 | |
7e071c79 | 185 | if (vhdr->h_vlan_encapsulated_proto != ethertype) |
c6c8fea2 SE |
186 | break; |
187 | ||
188 | /* fall through */ | |
af5d4f77 | 189 | case ETH_P_BATMAN: |
c6c8fea2 | 190 | goto dropped; |
a7f6ee94 | 191 | } |
c6c8fea2 | 192 | |
08adf151 | 193 | if (batadv_bla_tx(bat_priv, skb, vid)) |
23721387 SW |
194 | goto dropped; |
195 | ||
9d2c9488 LL |
196 | /* skb->data might have been reallocated by batadv_bla_tx() */ |
197 | ethhdr = (struct ethhdr *)skb->data; | |
198 | ||
a73105b8 | 199 | /* Register the client MAC in the transtable */ |
a19d3d85 ML |
200 | if (!is_multicast_ether_addr(ethhdr->h_source)) { |
201 | client_added = batadv_tt_local_add(soft_iface, ethhdr->h_source, | |
202 | vid, skb->skb_iif); | |
203 | if (!client_added) | |
204 | goto dropped; | |
205 | } | |
c6c8fea2 | 206 | |
b1a8c04b SW |
207 | /* don't accept stp packets. STP does not help in meshes. |
208 | * better use the bridge loop avoidance ... | |
4934ab95 SW |
209 | * |
210 | * The same goes for ECTP sent at least by some Cisco Switches, | |
211 | * it might confuse the mesh when used with bridge loop avoidance. | |
b1a8c04b | 212 | */ |
1eda58bf | 213 | if (batadv_compare_eth(ethhdr->h_dest, stp_addr)) |
b1a8c04b SW |
214 | goto dropped; |
215 | ||
4934ab95 SW |
216 | if (batadv_compare_eth(ethhdr->h_dest, ectp_addr)) |
217 | goto dropped; | |
218 | ||
6c413b1c | 219 | gw_mode = atomic_read(&bat_priv->gw_mode); |
be7af5cf | 220 | if (is_multicast_ether_addr(ethhdr->h_dest)) { |
6c413b1c AQ |
221 | /* if gw mode is off, broadcast every packet */ |
222 | if (gw_mode == BATADV_GW_MODE_OFF) { | |
223 | do_bcast = true; | |
224 | goto send; | |
be7af5cf | 225 | } |
9d2c9488 | 226 | |
6c413b1c AQ |
227 | dhcp_rcp = batadv_gw_dhcp_recipient_get(skb, &header_len, |
228 | chaddr); | |
229 | /* skb->data may have been modified by | |
230 | * batadv_gw_dhcp_recipient_get() | |
9d2c9488 | 231 | */ |
6c413b1c AQ |
232 | ethhdr = (struct ethhdr *)skb->data; |
233 | /* if gw_mode is on, broadcast any non-DHCP message. | |
234 | * All the DHCP packets are going to be sent as unicast | |
235 | */ | |
236 | if (dhcp_rcp == BATADV_DHCP_NO) { | |
237 | do_bcast = true; | |
238 | goto send; | |
239 | } | |
240 | ||
241 | if (dhcp_rcp == BATADV_DHCP_TO_CLIENT) | |
242 | dst_hint = chaddr; | |
243 | else if ((gw_mode == BATADV_GW_MODE_SERVER) && | |
244 | (dhcp_rcp == BATADV_DHCP_TO_SERVER)) | |
245 | /* gateways should not forward any DHCP message if | |
246 | * directed to a DHCP server | |
247 | */ | |
248 | goto dropped; | |
c6c8fea2 SE |
249 | } |
250 | ||
6c413b1c | 251 | send: |
c54f38c9 SW |
252 | batadv_skb_set_priority(skb, 0); |
253 | ||
c6c8fea2 SE |
254 | /* ethernet packet should be broadcasted */ |
255 | if (do_bcast) { | |
e5d89254 | 256 | primary_if = batadv_primary_if_get_selected(bat_priv); |
32ae9b22 | 257 | if (!primary_if) |
c6c8fea2 SE |
258 | goto dropped; |
259 | ||
c384ea3e AQ |
260 | /* in case of ARP request, we do not immediately broadcasti the |
261 | * packet, instead we first wait for DAT to try to retrieve the | |
262 | * correct ARP entry | |
263 | */ | |
264 | if (batadv_dat_snoop_outgoing_arp_request(bat_priv, skb)) | |
265 | brd_delay = msecs_to_jiffies(ARP_REQ_DELAY); | |
266 | ||
04b482a2 | 267 | if (batadv_skb_head_push(skb, sizeof(*bcast_packet)) < 0) |
c6c8fea2 SE |
268 | goto dropped; |
269 | ||
96412690 | 270 | bcast_packet = (struct batadv_bcast_packet *)skb->data; |
a40d9b07 SW |
271 | bcast_packet->version = BATADV_COMPAT_VERSION; |
272 | bcast_packet->ttl = BATADV_TTL; | |
c6c8fea2 SE |
273 | |
274 | /* batman packet type: broadcast */ | |
a40d9b07 | 275 | bcast_packet->packet_type = BATADV_BCAST; |
162d549c | 276 | bcast_packet->reserved = 0; |
c6c8fea2 SE |
277 | |
278 | /* hw address of first interface is the orig mac because only | |
9cfc7bd6 SE |
279 | * this mac is known throughout the mesh |
280 | */ | |
c6c8fea2 | 281 | memcpy(bcast_packet->orig, |
32ae9b22 | 282 | primary_if->net_dev->dev_addr, ETH_ALEN); |
c6c8fea2 SE |
283 | |
284 | /* set broadcast sequence number */ | |
bbb1f90e SE |
285 | seqno = atomic_inc_return(&bat_priv->bcast_seqno); |
286 | bcast_packet->seqno = htonl(seqno); | |
c6c8fea2 | 287 | |
c384ea3e | 288 | batadv_add_bcast_packet_to_list(bat_priv, skb, brd_delay); |
c6c8fea2 SE |
289 | |
290 | /* a copy is stored in the bcast list, therefore removing | |
9cfc7bd6 SE |
291 | * the original skb. |
292 | */ | |
c6c8fea2 SE |
293 | kfree_skb(skb); |
294 | ||
295 | /* unicast packet */ | |
296 | } else { | |
6c413b1c AQ |
297 | /* DHCP packets going to a server will use the GW feature */ |
298 | if (dhcp_rcp == BATADV_DHCP_TO_SERVER) { | |
9d2c9488 | 299 | ret = batadv_gw_out_of_range(bat_priv, skb); |
be7af5cf ML |
300 | if (ret) |
301 | goto dropped; | |
e300d314 | 302 | ret = batadv_send_skb_via_gw(bat_priv, skb, vid); |
6c413b1c AQ |
303 | } else { |
304 | if (batadv_dat_snoop_outgoing_arp_request(bat_priv, | |
305 | skb)) | |
306 | goto dropped; | |
e300d314 | 307 | |
6c413b1c AQ |
308 | batadv_dat_snoop_outgoing_arp_reply(bat_priv, skb); |
309 | ||
310 | ret = batadv_send_skb_via_tt(bat_priv, skb, dst_hint, | |
311 | vid); | |
312 | } | |
e300d314 | 313 | if (ret == NET_XMIT_DROP) |
c6c8fea2 SE |
314 | goto dropped_freed; |
315 | } | |
316 | ||
1c9b0550 ML |
317 | batadv_inc_counter(bat_priv, BATADV_CNT_TX); |
318 | batadv_add_counter(bat_priv, BATADV_CNT_TX_BYTES, data_len); | |
c6c8fea2 SE |
319 | goto end; |
320 | ||
321 | dropped: | |
322 | kfree_skb(skb); | |
323 | dropped_freed: | |
1c9b0550 | 324 | batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED); |
c6c8fea2 | 325 | end: |
32ae9b22 | 326 | if (primary_if) |
e5d89254 | 327 | batadv_hardif_free_ref(primary_if); |
c6c8fea2 SE |
328 | return NETDEV_TX_OK; |
329 | } | |
330 | ||
04b482a2 | 331 | void batadv_interface_rx(struct net_device *soft_iface, |
56303d34 | 332 | struct sk_buff *skb, struct batadv_hard_iface *recv_if, |
37135173 | 333 | int hdr_size, struct batadv_orig_node *orig_node) |
c6c8fea2 | 334 | { |
a40d9b07 | 335 | struct batadv_bcast_packet *batadv_bcast_packet; |
c018ad3d | 336 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
293e9338 | 337 | __be16 ethertype = htons(ETH_P_BATMAN); |
c018ad3d AQ |
338 | struct vlan_ethhdr *vhdr; |
339 | struct ethhdr *ethhdr; | |
340 | unsigned short vid; | |
2d3f6ccc SW |
341 | bool is_bcast; |
342 | ||
a40d9b07 SW |
343 | batadv_bcast_packet = (struct batadv_bcast_packet *)skb->data; |
344 | is_bcast = (batadv_bcast_packet->packet_type == BATADV_BCAST); | |
c6c8fea2 SE |
345 | |
346 | /* check if enough space is available for pulling, and pull */ | |
347 | if (!pskb_may_pull(skb, hdr_size)) | |
348 | goto dropped; | |
349 | ||
350 | skb_pull_rcsum(skb, hdr_size); | |
351 | skb_reset_mac_header(skb); | |
352 | ||
55883fd1 AQ |
353 | /* clean the netfilter state now that the batman-adv header has been |
354 | * removed | |
355 | */ | |
356 | nf_reset(skb); | |
357 | ||
2b1e2cb3 | 358 | vid = batadv_get_vid(skb, 0); |
7ed4be95 | 359 | ethhdr = eth_hdr(skb); |
c6c8fea2 SE |
360 | |
361 | switch (ntohs(ethhdr->h_proto)) { | |
362 | case ETH_P_8021Q: | |
363 | vhdr = (struct vlan_ethhdr *)skb->data; | |
c6c8fea2 | 364 | |
7e071c79 | 365 | if (vhdr->h_vlan_encapsulated_proto != ethertype) |
c6c8fea2 SE |
366 | break; |
367 | ||
368 | /* fall through */ | |
af5d4f77 | 369 | case ETH_P_BATMAN: |
c6c8fea2 SE |
370 | goto dropped; |
371 | } | |
372 | ||
c6c8fea2 SE |
373 | /* skb->dev & skb->pkt_type are set here */ |
374 | if (unlikely(!pskb_may_pull(skb, ETH_HLEN))) | |
375 | goto dropped; | |
376 | skb->protocol = eth_type_trans(skb, soft_iface); | |
377 | ||
25985edc | 378 | /* should not be necessary anymore as we use skb_pull_rcsum() |
c6c8fea2 | 379 | * TODO: please verify this and remove this TODO |
9cfc7bd6 SE |
380 | * -- Dec 21st 2009, Simon Wunderlich |
381 | */ | |
c6c8fea2 | 382 | |
9cfc7bd6 | 383 | /* skb->ip_summed = CHECKSUM_UNNECESSARY; */ |
c6c8fea2 | 384 | |
1c9b0550 ML |
385 | batadv_inc_counter(bat_priv, BATADV_CNT_RX); |
386 | batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES, | |
387 | skb->len + ETH_HLEN); | |
c6c8fea2 SE |
388 | |
389 | soft_iface->last_rx = jiffies; | |
390 | ||
74490f96 AQ |
391 | /* Let the bridge loop avoidance check the packet. If will |
392 | * not handle it, we can safely push it up. | |
393 | */ | |
394 | if (batadv_bla_rx(bat_priv, skb, vid, is_bcast)) | |
395 | goto out; | |
396 | ||
37135173 AQ |
397 | if (orig_node) |
398 | batadv_tt_add_temporary_global_entry(bat_priv, orig_node, | |
c018ad3d | 399 | ethhdr->h_source, vid); |
37135173 | 400 | |
b8cbd81d AQ |
401 | if (batadv_is_ap_isolated(bat_priv, ethhdr->h_source, ethhdr->h_dest, |
402 | vid)) | |
59b699cd AQ |
403 | goto dropped; |
404 | ||
c6c8fea2 | 405 | netif_rx(skb); |
ba85fac2 | 406 | goto out; |
c6c8fea2 SE |
407 | |
408 | dropped: | |
409 | kfree_skb(skb); | |
410 | out: | |
411 | return; | |
412 | } | |
413 | ||
5d2c05b2 AQ |
414 | /** |
415 | * batadv_softif_vlan_free_ref - decrease the vlan object refcounter and | |
416 | * possibly free it | |
417 | * @softif_vlan: the vlan object to release | |
418 | */ | |
90f4435d | 419 | void batadv_softif_vlan_free_ref(struct batadv_softif_vlan *softif_vlan) |
5d2c05b2 AQ |
420 | { |
421 | if (atomic_dec_and_test(&softif_vlan->refcount)) | |
422 | kfree_rcu(softif_vlan, rcu); | |
423 | } | |
424 | ||
425 | /** | |
426 | * batadv_softif_vlan_get - get the vlan object for a specific vid | |
427 | * @bat_priv: the bat priv with all the soft interface information | |
428 | * @vid: the identifier of the vlan object to retrieve | |
429 | * | |
430 | * Returns the private data of the vlan matching the vid passed as argument or | |
431 | * NULL otherwise. The refcounter of the returned object is incremented by 1. | |
432 | */ | |
90f4435d AQ |
433 | struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, |
434 | unsigned short vid) | |
5d2c05b2 AQ |
435 | { |
436 | struct batadv_softif_vlan *vlan_tmp, *vlan = NULL; | |
437 | ||
438 | rcu_read_lock(); | |
439 | hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) { | |
440 | if (vlan_tmp->vid != vid) | |
441 | continue; | |
442 | ||
443 | if (!atomic_inc_not_zero(&vlan_tmp->refcount)) | |
444 | continue; | |
445 | ||
446 | vlan = vlan_tmp; | |
447 | break; | |
448 | } | |
449 | rcu_read_unlock(); | |
450 | ||
451 | return vlan; | |
452 | } | |
453 | ||
454 | /** | |
455 | * batadv_create_vlan - allocate the needed resources for a new vlan | |
456 | * @bat_priv: the bat priv with all the soft interface information | |
457 | * @vid: the VLAN identifier | |
458 | * | |
459 | * Returns 0 on success, a negative error otherwise. | |
460 | */ | |
461 | int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) | |
462 | { | |
463 | struct batadv_softif_vlan *vlan; | |
90f4435d | 464 | int err; |
5d2c05b2 AQ |
465 | |
466 | vlan = batadv_softif_vlan_get(bat_priv, vid); | |
467 | if (vlan) { | |
468 | batadv_softif_vlan_free_ref(vlan); | |
469 | return -EEXIST; | |
470 | } | |
471 | ||
472 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); | |
473 | if (!vlan) | |
474 | return -ENOMEM; | |
475 | ||
476 | vlan->vid = vid; | |
477 | atomic_set(&vlan->refcount, 1); | |
478 | ||
b8cbd81d AQ |
479 | atomic_set(&vlan->ap_isolation, 0); |
480 | ||
90f4435d AQ |
481 | err = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); |
482 | if (err) { | |
483 | kfree(vlan); | |
484 | return err; | |
485 | } | |
486 | ||
5d2c05b2 AQ |
487 | /* add a new TT local entry. This one will be marked with the NOPURGE |
488 | * flag | |
489 | */ | |
490 | batadv_tt_local_add(bat_priv->soft_iface, | |
491 | bat_priv->soft_iface->dev_addr, vid, | |
492 | BATADV_NULL_IFINDEX); | |
493 | ||
494 | spin_lock_bh(&bat_priv->softif_vlan_list_lock); | |
495 | hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list); | |
496 | spin_unlock_bh(&bat_priv->softif_vlan_list_lock); | |
497 | ||
498 | return 0; | |
499 | } | |
500 | ||
501 | /** | |
502 | * batadv_softif_destroy_vlan - remove and destroy a softif_vlan object | |
503 | * @bat_priv: the bat priv with all the soft interface information | |
504 | * @vlan: the object to remove | |
505 | */ | |
506 | static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv, | |
507 | struct batadv_softif_vlan *vlan) | |
508 | { | |
509 | spin_lock_bh(&bat_priv->softif_vlan_list_lock); | |
510 | hlist_del_rcu(&vlan->list); | |
511 | spin_unlock_bh(&bat_priv->softif_vlan_list_lock); | |
512 | ||
90f4435d AQ |
513 | batadv_sysfs_del_vlan(bat_priv, vlan); |
514 | ||
5d2c05b2 AQ |
515 | /* explicitly remove the associated TT local entry because it is marked |
516 | * with the NOPURGE flag | |
517 | */ | |
518 | batadv_tt_local_remove(bat_priv, bat_priv->soft_iface->dev_addr, | |
519 | vlan->vid, "vlan interface destroyed", false); | |
520 | ||
521 | batadv_softif_vlan_free_ref(vlan); | |
522 | } | |
523 | ||
524 | /** | |
525 | * batadv_interface_add_vid - ndo_add_vid API implementation | |
526 | * @dev: the netdev of the mesh interface | |
527 | * @vid: identifier of the new vlan | |
528 | * | |
529 | * Set up all the internal structures for handling the new vlan on top of the | |
530 | * mesh interface | |
531 | * | |
532 | * Returns 0 on success or a negative error code in case of failure. | |
533 | */ | |
534 | static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, | |
535 | unsigned short vid) | |
536 | { | |
537 | struct batadv_priv *bat_priv = netdev_priv(dev); | |
538 | ||
539 | /* only 802.1Q vlans are supported. | |
540 | * batman-adv does not know how to handle other types | |
541 | */ | |
542 | if (proto != htons(ETH_P_8021Q)) | |
543 | return -EINVAL; | |
544 | ||
545 | vid |= BATADV_VLAN_HAS_TAG; | |
546 | ||
547 | return batadv_softif_create_vlan(bat_priv, vid); | |
548 | } | |
549 | ||
550 | /** | |
551 | * batadv_interface_kill_vid - ndo_kill_vid API implementation | |
552 | * @dev: the netdev of the mesh interface | |
553 | * @vid: identifier of the deleted vlan | |
554 | * | |
555 | * Destroy all the internal structures used to handle the vlan identified by vid | |
556 | * on top of the mesh interface | |
557 | * | |
558 | * Returns 0 on success, -EINVAL if the specified prototype is not ETH_P_8021Q | |
559 | * or -ENOENT if the specified vlan id wasn't registered. | |
560 | */ | |
561 | static int batadv_interface_kill_vid(struct net_device *dev, __be16 proto, | |
562 | unsigned short vid) | |
563 | { | |
564 | struct batadv_priv *bat_priv = netdev_priv(dev); | |
565 | struct batadv_softif_vlan *vlan; | |
566 | ||
567 | /* only 802.1Q vlans are supported. batman-adv does not know how to | |
568 | * handle other types | |
569 | */ | |
570 | if (proto != htons(ETH_P_8021Q)) | |
571 | return -EINVAL; | |
572 | ||
573 | vlan = batadv_softif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG); | |
574 | if (!vlan) | |
575 | return -ENOENT; | |
576 | ||
577 | batadv_softif_destroy_vlan(bat_priv, vlan); | |
578 | ||
579 | /* finally free the vlan object */ | |
580 | batadv_softif_vlan_free_ref(vlan); | |
581 | ||
582 | return 0; | |
583 | } | |
584 | ||
36c1d153 SE |
585 | /* batman-adv network devices have devices nesting below it and are a special |
586 | * "super class" of normal network devices; split their locks off into a | |
587 | * separate class since they always nest. | |
588 | */ | |
589 | static struct lock_class_key batadv_netdev_xmit_lock_key; | |
590 | static struct lock_class_key batadv_netdev_addr_lock_key; | |
591 | ||
592 | /** | |
593 | * batadv_set_lockdep_class_one - Set lockdep class for a single tx queue | |
594 | * @dev: device which owns the tx queue | |
595 | * @txq: tx queue to modify | |
596 | * @_unused: always NULL | |
597 | */ | |
598 | static void batadv_set_lockdep_class_one(struct net_device *dev, | |
599 | struct netdev_queue *txq, | |
600 | void *_unused) | |
601 | { | |
602 | lockdep_set_class(&txq->_xmit_lock, &batadv_netdev_xmit_lock_key); | |
603 | } | |
604 | ||
605 | /** | |
606 | * batadv_set_lockdep_class - Set txq and addr_list lockdep class | |
607 | * @dev: network device to modify | |
608 | */ | |
609 | static void batadv_set_lockdep_class(struct net_device *dev) | |
610 | { | |
611 | lockdep_set_class(&dev->addr_list_lock, &batadv_netdev_addr_lock_key); | |
612 | netdev_for_each_tx_queue(dev, batadv_set_lockdep_class_one, NULL); | |
613 | } | |
614 | ||
5bc44dc8 SW |
615 | /** |
616 | * batadv_softif_destroy_finish - cleans up the remains of a softif | |
617 | * @work: work queue item | |
618 | * | |
619 | * Free the parts of the soft interface which can not be removed under | |
620 | * rtnl lock (to prevent deadlock situations). | |
621 | */ | |
622 | static void batadv_softif_destroy_finish(struct work_struct *work) | |
623 | { | |
5d2c05b2 | 624 | struct batadv_softif_vlan *vlan; |
5bc44dc8 SW |
625 | struct batadv_priv *bat_priv; |
626 | struct net_device *soft_iface; | |
627 | ||
628 | bat_priv = container_of(work, struct batadv_priv, | |
629 | cleanup_work); | |
630 | soft_iface = bat_priv->soft_iface; | |
631 | ||
5d2c05b2 AQ |
632 | /* destroy the "untagged" VLAN */ |
633 | vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); | |
634 | if (vlan) { | |
635 | batadv_softif_destroy_vlan(bat_priv, vlan); | |
636 | batadv_softif_vlan_free_ref(vlan); | |
637 | } | |
638 | ||
5bc44dc8 SW |
639 | batadv_sysfs_del_meshif(soft_iface); |
640 | ||
641 | rtnl_lock(); | |
642 | unregister_netdevice(soft_iface); | |
643 | rtnl_unlock(); | |
644 | } | |
645 | ||
37130293 SE |
646 | /** |
647 | * batadv_softif_init_late - late stage initialization of soft interface | |
648 | * @dev: registered network device to modify | |
649 | * | |
650 | * Returns error code on failures | |
651 | */ | |
652 | static int batadv_softif_init_late(struct net_device *dev) | |
c6c8fea2 | 653 | { |
56303d34 | 654 | struct batadv_priv *bat_priv; |
ee75ed88 | 655 | uint32_t random_seqno; |
c6c8fea2 | 656 | int ret; |
d69909d2 | 657 | size_t cnt_len = sizeof(uint64_t) * BATADV_CNT_NUM; |
c6c8fea2 | 658 | |
37130293 | 659 | batadv_set_lockdep_class(dev); |
c6c8fea2 | 660 | |
37130293 SE |
661 | bat_priv = netdev_priv(dev); |
662 | bat_priv->soft_iface = dev; | |
5bc44dc8 | 663 | INIT_WORK(&bat_priv->cleanup_work, batadv_softif_destroy_finish); |
1c9b0550 ML |
664 | |
665 | /* batadv_interface_stats() needs to be available as soon as | |
666 | * register_netdevice() has been called | |
667 | */ | |
668 | bat_priv->bat_counters = __alloc_percpu(cnt_len, __alignof__(uint64_t)); | |
669 | if (!bat_priv->bat_counters) | |
37130293 | 670 | return -ENOMEM; |
c6c8fea2 | 671 | |
c6c8fea2 SE |
672 | atomic_set(&bat_priv->aggregated_ogms, 1); |
673 | atomic_set(&bat_priv->bonding, 0); | |
fa706554 | 674 | #ifdef CONFIG_BATMAN_ADV_BLA |
23721387 | 675 | atomic_set(&bat_priv->bridge_loop_avoidance, 0); |
fa706554 | 676 | #endif |
33af49ad AQ |
677 | #ifdef CONFIG_BATMAN_ADV_DAT |
678 | atomic_set(&bat_priv->distributed_arp_table, 1); | |
679 | #endif | |
cd646ab1 | 680 | atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF); |
c6c8fea2 | 681 | atomic_set(&bat_priv->gw_sel_class, 20); |
414254e3 ML |
682 | atomic_set(&bat_priv->gw.bandwidth_down, 100); |
683 | atomic_set(&bat_priv->gw.bandwidth_up, 20); | |
c6c8fea2 | 684 | atomic_set(&bat_priv->orig_interval, 1000); |
8681a1c4 | 685 | atomic_set(&bat_priv->hop_penalty, 30); |
0c430d0d | 686 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
c6c8fea2 | 687 | atomic_set(&bat_priv->log_level, 0); |
0c430d0d | 688 | #endif |
c6c8fea2 | 689 | atomic_set(&bat_priv->fragmentation, 1); |
a19d3d85 | 690 | atomic_set(&bat_priv->packet_size_max, ETH_DATA_LEN); |
42d0b044 SE |
691 | atomic_set(&bat_priv->bcast_queue_left, BATADV_BCAST_QUEUE_LEN); |
692 | atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN); | |
c6c8fea2 | 693 | |
39c75a51 | 694 | atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE); |
c6c8fea2 | 695 | atomic_set(&bat_priv->bcast_seqno, 1); |
807736f6 SE |
696 | atomic_set(&bat_priv->tt.vn, 0); |
697 | atomic_set(&bat_priv->tt.local_changes, 0); | |
698 | atomic_set(&bat_priv->tt.ogm_append_cnt, 0); | |
699 | #ifdef CONFIG_BATMAN_ADV_BLA | |
700 | atomic_set(&bat_priv->bla.num_requests, 0); | |
701 | #endif | |
702 | bat_priv->tt.last_changeset = NULL; | |
703 | bat_priv->tt.last_changeset_len = 0; | |
c6c8fea2 | 704 | |
ee75ed88 MH |
705 | /* randomize initial seqno to avoid collision */ |
706 | get_random_bytes(&random_seqno, sizeof(random_seqno)); | |
707 | atomic_set(&bat_priv->frag_seqno, random_seqno); | |
708 | ||
c6c8fea2 SE |
709 | bat_priv->primary_if = NULL; |
710 | bat_priv->num_ifaces = 0; | |
c6c8fea2 | 711 | |
d353d8d4 MH |
712 | batadv_nc_init_bat_priv(bat_priv); |
713 | ||
37130293 | 714 | ret = batadv_algo_select(bat_priv, batadv_routing_algo); |
c6c8fea2 | 715 | if (ret < 0) |
37130293 | 716 | goto free_bat_counters; |
c6c8fea2 | 717 | |
37130293 | 718 | ret = batadv_debugfs_add_meshif(dev); |
c6c8fea2 | 719 | if (ret < 0) |
37130293 | 720 | goto free_bat_counters; |
c6c8fea2 | 721 | |
37130293 | 722 | ret = batadv_mesh_init(dev); |
c6c8fea2 SE |
723 | if (ret < 0) |
724 | goto unreg_debugfs; | |
725 | ||
37130293 | 726 | return 0; |
c6c8fea2 SE |
727 | |
728 | unreg_debugfs: | |
37130293 | 729 | batadv_debugfs_del_meshif(dev); |
1c9b0550 ML |
730 | free_bat_counters: |
731 | free_percpu(bat_priv->bat_counters); | |
f69ae770 | 732 | bat_priv->bat_counters = NULL; |
37130293 SE |
733 | |
734 | return ret; | |
735 | } | |
736 | ||
3dbd550b SE |
737 | /** |
738 | * batadv_softif_slave_add - Add a slave interface to a batadv_soft_interface | |
739 | * @dev: batadv_soft_interface used as master interface | |
740 | * @slave_dev: net_device which should become the slave interface | |
741 | * | |
742 | * Return 0 if successful or error otherwise. | |
743 | */ | |
744 | static int batadv_softif_slave_add(struct net_device *dev, | |
745 | struct net_device *slave_dev) | |
746 | { | |
747 | struct batadv_hard_iface *hard_iface; | |
748 | int ret = -EINVAL; | |
749 | ||
750 | hard_iface = batadv_hardif_get_by_netdev(slave_dev); | |
751 | if (!hard_iface || hard_iface->soft_iface != NULL) | |
752 | goto out; | |
753 | ||
754 | ret = batadv_hardif_enable_interface(hard_iface, dev->name); | |
755 | ||
756 | out: | |
757 | if (hard_iface) | |
758 | batadv_hardif_free_ref(hard_iface); | |
759 | return ret; | |
760 | } | |
761 | ||
762 | /** | |
763 | * batadv_softif_slave_del - Delete a slave iface from a batadv_soft_interface | |
764 | * @dev: batadv_soft_interface used as master interface | |
765 | * @slave_dev: net_device which should be removed from the master interface | |
766 | * | |
767 | * Return 0 if successful or error otherwise. | |
768 | */ | |
769 | static int batadv_softif_slave_del(struct net_device *dev, | |
770 | struct net_device *slave_dev) | |
771 | { | |
772 | struct batadv_hard_iface *hard_iface; | |
773 | int ret = -EINVAL; | |
774 | ||
775 | hard_iface = batadv_hardif_get_by_netdev(slave_dev); | |
776 | ||
777 | if (!hard_iface || hard_iface->soft_iface != dev) | |
778 | goto out; | |
779 | ||
780 | batadv_hardif_disable_interface(hard_iface, BATADV_IF_CLEANUP_KEEP); | |
781 | ret = 0; | |
782 | ||
783 | out: | |
784 | if (hard_iface) | |
785 | batadv_hardif_free_ref(hard_iface); | |
786 | return ret; | |
787 | } | |
788 | ||
37130293 SE |
789 | static const struct net_device_ops batadv_netdev_ops = { |
790 | .ndo_init = batadv_softif_init_late, | |
791 | .ndo_open = batadv_interface_open, | |
792 | .ndo_stop = batadv_interface_release, | |
793 | .ndo_get_stats = batadv_interface_stats, | |
5d2c05b2 AQ |
794 | .ndo_vlan_rx_add_vid = batadv_interface_add_vid, |
795 | .ndo_vlan_rx_kill_vid = batadv_interface_kill_vid, | |
37130293 SE |
796 | .ndo_set_mac_address = batadv_interface_set_mac_addr, |
797 | .ndo_change_mtu = batadv_interface_change_mtu, | |
a4deee1a | 798 | .ndo_set_rx_mode = batadv_interface_set_rx_mode, |
37130293 | 799 | .ndo_start_xmit = batadv_interface_tx, |
3dbd550b SE |
800 | .ndo_validate_addr = eth_validate_addr, |
801 | .ndo_add_slave = batadv_softif_slave_add, | |
802 | .ndo_del_slave = batadv_softif_slave_del, | |
37130293 SE |
803 | }; |
804 | ||
b3246020 SE |
805 | /** |
806 | * batadv_softif_free - Deconstructor of batadv_soft_interface | |
807 | * @dev: Device to cleanup and remove | |
808 | */ | |
809 | static void batadv_softif_free(struct net_device *dev) | |
810 | { | |
811 | batadv_debugfs_del_meshif(dev); | |
812 | batadv_mesh_free(dev); | |
0c501345 AQ |
813 | |
814 | /* some scheduled RCU callbacks need the bat_priv struct to accomplish | |
815 | * their tasks. Wait for them all to be finished before freeing the | |
816 | * netdev and its private data (bat_priv) | |
817 | */ | |
818 | rcu_barrier(); | |
819 | ||
b3246020 SE |
820 | free_netdev(dev); |
821 | } | |
822 | ||
37130293 SE |
823 | /** |
824 | * batadv_softif_init_early - early stage initialization of soft interface | |
825 | * @dev: registered network device to modify | |
826 | */ | |
827 | static void batadv_softif_init_early(struct net_device *dev) | |
828 | { | |
829 | struct batadv_priv *priv = netdev_priv(dev); | |
830 | ||
831 | ether_setup(dev); | |
832 | ||
833 | dev->netdev_ops = &batadv_netdev_ops; | |
b3246020 | 834 | dev->destructor = batadv_softif_free; |
5d2c05b2 | 835 | dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
37130293 SE |
836 | dev->tx_queue_len = 0; |
837 | ||
838 | /* can't call min_mtu, because the needed variables | |
839 | * have not been initialized yet | |
840 | */ | |
841 | dev->mtu = ETH_DATA_LEN; | |
842 | /* reserve more space in the skbuff for our header */ | |
411d6ed9 | 843 | dev->hard_header_len = batadv_max_header_len(); |
37130293 SE |
844 | |
845 | /* generate random address */ | |
846 | eth_hw_addr_random(dev); | |
847 | ||
848 | SET_ETHTOOL_OPS(dev, &batadv_ethtool_ops); | |
849 | ||
850 | memset(priv, 0, sizeof(*priv)); | |
851 | } | |
852 | ||
853 | struct net_device *batadv_softif_create(const char *name) | |
854 | { | |
855 | struct net_device *soft_iface; | |
856 | int ret; | |
857 | ||
858 | soft_iface = alloc_netdev(sizeof(struct batadv_priv), name, | |
859 | batadv_softif_init_early); | |
860 | if (!soft_iface) | |
861 | return NULL; | |
862 | ||
a4ac28c0 SE |
863 | soft_iface->rtnl_link_ops = &batadv_link_ops; |
864 | ||
37130293 SE |
865 | ret = register_netdevice(soft_iface); |
866 | if (ret < 0) { | |
867 | pr_err("Unable to register the batman interface '%s': %i\n", | |
868 | name, ret); | |
869 | free_netdev(soft_iface); | |
870 | return NULL; | |
871 | } | |
872 | ||
873 | return soft_iface; | |
c6c8fea2 SE |
874 | } |
875 | ||
e07932ae ML |
876 | /** |
877 | * batadv_softif_destroy_sysfs - deletion of batadv_soft_interface via sysfs | |
878 | * @soft_iface: the to-be-removed batman-adv interface | |
879 | */ | |
880 | void batadv_softif_destroy_sysfs(struct net_device *soft_iface) | |
c6c8fea2 | 881 | { |
5bc44dc8 SW |
882 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
883 | ||
5bc44dc8 | 884 | queue_work(batadv_event_workqueue, &bat_priv->cleanup_work); |
c6c8fea2 SE |
885 | } |
886 | ||
a4ac28c0 SE |
887 | /** |
888 | * batadv_softif_destroy_netlink - deletion of batadv_soft_interface via netlink | |
889 | * @soft_iface: the to-be-removed batman-adv interface | |
890 | * @head: list pointer | |
891 | */ | |
892 | static void batadv_softif_destroy_netlink(struct net_device *soft_iface, | |
893 | struct list_head *head) | |
894 | { | |
895 | struct batadv_hard_iface *hard_iface; | |
896 | ||
897 | list_for_each_entry(hard_iface, &batadv_hardif_list, list) { | |
898 | if (hard_iface->soft_iface == soft_iface) | |
899 | batadv_hardif_disable_interface(hard_iface, | |
900 | BATADV_IF_CLEANUP_KEEP); | |
901 | } | |
902 | ||
903 | batadv_sysfs_del_meshif(soft_iface); | |
904 | unregister_netdevice_queue(soft_iface, head); | |
905 | } | |
906 | ||
04b482a2 | 907 | int batadv_softif_is_valid(const struct net_device *net_dev) |
e44d8fe2 | 908 | { |
0294ca0d | 909 | if (net_dev->netdev_ops->ndo_start_xmit == batadv_interface_tx) |
e44d8fe2 | 910 | return 1; |
e44d8fe2 SE |
911 | |
912 | return 0; | |
913 | } | |
914 | ||
a4ac28c0 SE |
915 | struct rtnl_link_ops batadv_link_ops __read_mostly = { |
916 | .kind = "batadv", | |
917 | .priv_size = sizeof(struct batadv_priv), | |
918 | .setup = batadv_softif_init_early, | |
919 | .dellink = batadv_softif_destroy_netlink, | |
920 | }; | |
921 | ||
c6c8fea2 | 922 | /* ethtool */ |
0294ca0d | 923 | static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
c6c8fea2 SE |
924 | { |
925 | cmd->supported = 0; | |
926 | cmd->advertising = 0; | |
70739497 | 927 | ethtool_cmd_speed_set(cmd, SPEED_10); |
c6c8fea2 SE |
928 | cmd->duplex = DUPLEX_FULL; |
929 | cmd->port = PORT_TP; | |
930 | cmd->phy_address = 0; | |
931 | cmd->transceiver = XCVR_INTERNAL; | |
932 | cmd->autoneg = AUTONEG_DISABLE; | |
933 | cmd->maxtxpkt = 0; | |
934 | cmd->maxrxpkt = 0; | |
935 | ||
936 | return 0; | |
937 | } | |
938 | ||
0294ca0d SE |
939 | static void batadv_get_drvinfo(struct net_device *dev, |
940 | struct ethtool_drvinfo *info) | |
c6c8fea2 | 941 | { |
7826d43f JP |
942 | strlcpy(info->driver, "B.A.T.M.A.N. advanced", sizeof(info->driver)); |
943 | strlcpy(info->version, BATADV_SOURCE_VERSION, sizeof(info->version)); | |
944 | strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); | |
945 | strlcpy(info->bus_info, "batman", sizeof(info->bus_info)); | |
c6c8fea2 SE |
946 | } |
947 | ||
0294ca0d | 948 | static u32 batadv_get_msglevel(struct net_device *dev) |
c6c8fea2 SE |
949 | { |
950 | return -EOPNOTSUPP; | |
951 | } | |
952 | ||
0294ca0d | 953 | static void batadv_set_msglevel(struct net_device *dev, u32 value) |
c6c8fea2 SE |
954 | { |
955 | } | |
956 | ||
0294ca0d | 957 | static u32 batadv_get_link(struct net_device *dev) |
c6c8fea2 SE |
958 | { |
959 | return 1; | |
960 | } | |
f8214865 MH |
961 | |
962 | /* Inspired by drivers/net/ethernet/dlink/sundance.c:1702 | |
963 | * Declare each description string in struct.name[] to get fixed sized buffer | |
964 | * and compile time checking for strings longer than ETH_GSTRING_LEN. | |
965 | */ | |
966 | static const struct { | |
967 | const char name[ETH_GSTRING_LEN]; | |
0294ca0d | 968 | } batadv_counters_strings[] = { |
1c9b0550 ML |
969 | { "tx" }, |
970 | { "tx_bytes" }, | |
971 | { "tx_dropped" }, | |
972 | { "rx" }, | |
973 | { "rx_bytes" }, | |
f8214865 MH |
974 | { "forward" }, |
975 | { "forward_bytes" }, | |
976 | { "mgmt_tx" }, | |
977 | { "mgmt_tx_bytes" }, | |
978 | { "mgmt_rx" }, | |
979 | { "mgmt_rx_bytes" }, | |
ee75ed88 MH |
980 | { "frag_tx" }, |
981 | { "frag_tx_bytes" }, | |
610bfc6b MH |
982 | { "frag_rx" }, |
983 | { "frag_rx_bytes" }, | |
984 | { "frag_fwd" }, | |
985 | { "frag_fwd_bytes" }, | |
f8214865 MH |
986 | { "tt_request_tx" }, |
987 | { "tt_request_rx" }, | |
988 | { "tt_response_tx" }, | |
989 | { "tt_response_rx" }, | |
990 | { "tt_roam_adv_tx" }, | |
991 | { "tt_roam_adv_rx" }, | |
4046b24a MH |
992 | #ifdef CONFIG_BATMAN_ADV_DAT |
993 | { "dat_get_tx" }, | |
994 | { "dat_get_rx" }, | |
995 | { "dat_put_tx" }, | |
996 | { "dat_put_rx" }, | |
997 | { "dat_cached_reply_tx" }, | |
998 | #endif | |
3c12de9a MH |
999 | #ifdef CONFIG_BATMAN_ADV_NC |
1000 | { "nc_code" }, | |
1001 | { "nc_code_bytes" }, | |
1002 | { "nc_recode" }, | |
1003 | { "nc_recode_bytes" }, | |
612d2b4f | 1004 | { "nc_buffer" }, |
2df5278b MH |
1005 | { "nc_decode" }, |
1006 | { "nc_decode_bytes" }, | |
1007 | { "nc_decode_failed" }, | |
1008 | { "nc_sniffed" }, | |
3c12de9a | 1009 | #endif |
f8214865 MH |
1010 | }; |
1011 | ||
1012 | static void batadv_get_strings(struct net_device *dev, uint32_t stringset, | |
1013 | uint8_t *data) | |
1014 | { | |
1015 | if (stringset == ETH_SS_STATS) | |
0294ca0d SE |
1016 | memcpy(data, batadv_counters_strings, |
1017 | sizeof(batadv_counters_strings)); | |
f8214865 MH |
1018 | } |
1019 | ||
1020 | static void batadv_get_ethtool_stats(struct net_device *dev, | |
1021 | struct ethtool_stats *stats, | |
1022 | uint64_t *data) | |
1023 | { | |
56303d34 | 1024 | struct batadv_priv *bat_priv = netdev_priv(dev); |
f8214865 MH |
1025 | int i; |
1026 | ||
d69909d2 | 1027 | for (i = 0; i < BATADV_CNT_NUM; i++) |
f8214865 MH |
1028 | data[i] = batadv_sum_counter(bat_priv, i); |
1029 | } | |
1030 | ||
1031 | static int batadv_get_sset_count(struct net_device *dev, int stringset) | |
1032 | { | |
1033 | if (stringset == ETH_SS_STATS) | |
d69909d2 | 1034 | return BATADV_CNT_NUM; |
f8214865 MH |
1035 | |
1036 | return -EOPNOTSUPP; | |
1037 | } |