1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) B.A.T.M.A.N. contributors: 2 /* Copyright (C) B.A.T.M.A.N. contributors:
3 * 3 *
4 * Marek Lindner, Simon Wunderlich 4 * Marek Lindner, Simon Wunderlich
5 */ 5 */
6 6
7 #include "soft-interface.h" 7 #include "soft-interface.h"
8 #include "main.h" 8 #include "main.h"
9 9
10 #include <linux/atomic.h> 10 #include <linux/atomic.h>
11 #include <linux/byteorder/generic.h> 11 #include <linux/byteorder/generic.h>
12 #include <linux/cache.h> 12 #include <linux/cache.h>
13 #include <linux/compiler.h> 13 #include <linux/compiler.h>
14 #include <linux/container_of.h> 14 #include <linux/container_of.h>
15 #include <linux/cpumask.h> 15 #include <linux/cpumask.h>
16 #include <linux/errno.h> 16 #include <linux/errno.h>
17 #include <linux/etherdevice.h> 17 #include <linux/etherdevice.h>
18 #include <linux/ethtool.h> 18 #include <linux/ethtool.h>
19 #include <linux/gfp.h> 19 #include <linux/gfp.h>
20 #include <linux/if_ether.h> 20 #include <linux/if_ether.h>
21 #include <linux/if_vlan.h> 21 #include <linux/if_vlan.h>
22 #include <linux/jiffies.h> 22 #include <linux/jiffies.h>
23 #include <linux/kref.h> 23 #include <linux/kref.h>
24 #include <linux/list.h> 24 #include <linux/list.h>
25 #include <linux/lockdep.h> 25 #include <linux/lockdep.h>
26 #include <linux/netdevice.h> 26 #include <linux/netdevice.h>
27 #include <linux/netlink.h> 27 #include <linux/netlink.h>
28 #include <linux/percpu.h> 28 #include <linux/percpu.h>
29 #include <linux/random.h> 29 #include <linux/random.h>
30 #include <linux/rculist.h> 30 #include <linux/rculist.h>
31 #include <linux/rcupdate.h> 31 #include <linux/rcupdate.h>
32 #include <linux/skbuff.h> 32 #include <linux/skbuff.h>
33 #include <linux/slab.h> 33 #include <linux/slab.h>
34 #include <linux/socket.h> 34 #include <linux/socket.h>
35 #include <linux/spinlock.h> 35 #include <linux/spinlock.h>
36 #include <linux/stddef.h> 36 #include <linux/stddef.h>
37 #include <linux/string.h> 37 #include <linux/string.h>
38 #include <linux/types.h> 38 #include <linux/types.h>
39 #include <net/net_namespace.h> 39 #include <net/net_namespace.h>
40 #include <net/netlink.h> 40 #include <net/netlink.h>
41 #include <uapi/linux/batadv_packet.h> 41 #include <uapi/linux/batadv_packet.h>
42 #include <uapi/linux/batman_adv.h> 42 #include <uapi/linux/batman_adv.h>
43 43
44 #include "bat_algo.h" 44 #include "bat_algo.h"
45 #include "bridge_loop_avoidance.h" 45 #include "bridge_loop_avoidance.h"
46 #include "distributed-arp-table.h" 46 #include "distributed-arp-table.h"
47 #include "gateway_client.h" 47 #include "gateway_client.h"
48 #include "hard-interface.h" 48 #include "hard-interface.h"
49 #include "multicast.h" 49 #include "multicast.h"
50 #include "network-coding.h" 50 #include "network-coding.h"
51 #include "send.h" 51 #include "send.h"
52 #include "translation-table.h" 52 #include "translation-table.h"
53 53
54 /** 54 /**
55 * batadv_skb_head_push() - Increase header si 55 * batadv_skb_head_push() - Increase header size and move (push) head pointer
56 * @skb: packet buffer which should be modifie 56 * @skb: packet buffer which should be modified
57 * @len: number of bytes to add 57 * @len: number of bytes to add
58 * 58 *
59 * Return: 0 on success or negative error numb 59 * Return: 0 on success or negative error number in case of failure
60 */ 60 */
61 int batadv_skb_head_push(struct sk_buff *skb, 61 int batadv_skb_head_push(struct sk_buff *skb, unsigned int len)
62 { 62 {
63 int result; 63 int result;
64 64
65 /* TODO: We must check if we can relea 65 /* TODO: We must check if we can release all references to non-payload
66 * data using __skb_header_release in 66 * data using __skb_header_release in our skbs to allow skb_cow_header
67 * to work optimally. This means that 67 * to work optimally. This means that those skbs are not allowed to read
68 * or write any data which is before t 68 * or write any data which is before the current position of skb->data
69 * after that call and thus allow othe 69 * after that call and thus allow other skbs with the same data buffer
70 * to write freely in that area. 70 * to write freely in that area.
71 */ 71 */
72 result = skb_cow_head(skb, len); 72 result = skb_cow_head(skb, len);
73 if (result < 0) 73 if (result < 0)
74 return result; 74 return result;
75 75
76 skb_push(skb, len); 76 skb_push(skb, len);
77 return 0; 77 return 0;
78 } 78 }
79 79
80 static int batadv_interface_open(struct net_de 80 static int batadv_interface_open(struct net_device *dev)
81 { 81 {
82 netif_start_queue(dev); 82 netif_start_queue(dev);
83 return 0; 83 return 0;
84 } 84 }
85 85
86 static int batadv_interface_release(struct net 86 static int batadv_interface_release(struct net_device *dev)
87 { 87 {
88 netif_stop_queue(dev); 88 netif_stop_queue(dev);
89 return 0; 89 return 0;
90 } 90 }
91 91
92 /** 92 /**
93 * batadv_sum_counter() - Sum the cpu-local co 93 * batadv_sum_counter() - Sum the cpu-local counters for index 'idx'
94 * @bat_priv: the bat priv with all the soft i 94 * @bat_priv: the bat priv with all the soft interface information
95 * @idx: index of counter to sum up 95 * @idx: index of counter to sum up
96 * 96 *
97 * Return: sum of all cpu-local counters 97 * Return: sum of all cpu-local counters
98 */ 98 */
99 static u64 batadv_sum_counter(struct batadv_pr 99 static u64 batadv_sum_counter(struct batadv_priv *bat_priv, size_t idx)
100 { 100 {
101 u64 *counters, sum = 0; 101 u64 *counters, sum = 0;
102 int cpu; 102 int cpu;
103 103
104 for_each_possible_cpu(cpu) { 104 for_each_possible_cpu(cpu) {
105 counters = per_cpu_ptr(bat_pri 105 counters = per_cpu_ptr(bat_priv->bat_counters, cpu);
106 sum += counters[idx]; 106 sum += counters[idx];
107 } 107 }
108 108
109 return sum; 109 return sum;
110 } 110 }
111 111
112 static struct net_device_stats *batadv_interfa 112 static struct net_device_stats *batadv_interface_stats(struct net_device *dev)
113 { 113 {
114 struct batadv_priv *bat_priv = netdev_ 114 struct batadv_priv *bat_priv = netdev_priv(dev);
115 struct net_device_stats *stats = &dev- 115 struct net_device_stats *stats = &dev->stats;
116 116
117 stats->tx_packets = batadv_sum_counter 117 stats->tx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_TX);
118 stats->tx_bytes = batadv_sum_counter(b 118 stats->tx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_TX_BYTES);
119 stats->tx_dropped = batadv_sum_counter 119 stats->tx_dropped = batadv_sum_counter(bat_priv, BATADV_CNT_TX_DROPPED);
120 stats->rx_packets = batadv_sum_counter 120 stats->rx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_RX);
121 stats->rx_bytes = batadv_sum_counter(b 121 stats->rx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_RX_BYTES);
122 return stats; 122 return stats;
123 } 123 }
124 124
125 static int batadv_interface_set_mac_addr(struc 125 static int batadv_interface_set_mac_addr(struct net_device *dev, void *p)
126 { 126 {
127 struct batadv_priv *bat_priv = netdev_ 127 struct batadv_priv *bat_priv = netdev_priv(dev);
128 struct batadv_softif_vlan *vlan; 128 struct batadv_softif_vlan *vlan;
129 struct sockaddr *addr = p; 129 struct sockaddr *addr = p;
130 u8 old_addr[ETH_ALEN]; 130 u8 old_addr[ETH_ALEN];
131 131
132 if (!is_valid_ether_addr(addr->sa_data 132 if (!is_valid_ether_addr(addr->sa_data))
133 return -EADDRNOTAVAIL; 133 return -EADDRNOTAVAIL;
134 134
135 ether_addr_copy(old_addr, dev->dev_add 135 ether_addr_copy(old_addr, dev->dev_addr);
136 eth_hw_addr_set(dev, addr->sa_data); 136 eth_hw_addr_set(dev, addr->sa_data);
137 137
138 /* only modify transtable if it has be 138 /* only modify transtable if it has been initialized before */
139 if (atomic_read(&bat_priv->mesh_state) 139 if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
140 return 0; 140 return 0;
141 141
142 rcu_read_lock(); 142 rcu_read_lock();
143 hlist_for_each_entry_rcu(vlan, &bat_pr 143 hlist_for_each_entry_rcu(vlan, &bat_priv->softif_vlan_list, list) {
144 batadv_tt_local_remove(bat_pri 144 batadv_tt_local_remove(bat_priv, old_addr, vlan->vid,
145 "mac ad 145 "mac address changed", false);
146 batadv_tt_local_add(dev, addr- 146 batadv_tt_local_add(dev, addr->sa_data, vlan->vid,
147 BATADV_NUL 147 BATADV_NULL_IFINDEX, BATADV_NO_MARK);
148 } 148 }
149 rcu_read_unlock(); 149 rcu_read_unlock();
150 150
151 return 0; 151 return 0;
152 } 152 }
153 153
154 static int batadv_interface_change_mtu(struct 154 static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu)
155 { 155 {
156 struct batadv_priv *bat_priv = netdev_ 156 struct batadv_priv *bat_priv = netdev_priv(dev);
157 157
158 /* check ranges */ 158 /* check ranges */
159 if (new_mtu < ETH_MIN_MTU || new_mtu > 159 if (new_mtu < ETH_MIN_MTU || new_mtu > batadv_hardif_min_mtu(dev))
160 return -EINVAL; 160 return -EINVAL;
161 161
162 WRITE_ONCE(dev->mtu, new_mtu); 162 WRITE_ONCE(dev->mtu, new_mtu);
163 bat_priv->mtu_set_by_user = new_mtu; 163 bat_priv->mtu_set_by_user = new_mtu;
164 164
165 return 0; 165 return 0;
166 } 166 }
167 167
168 /** 168 /**
169 * batadv_interface_set_rx_mode() - set the rx 169 * batadv_interface_set_rx_mode() - set the rx mode of a device
170 * @dev: registered network device to modify 170 * @dev: registered network device to modify
171 * 171 *
172 * We do not actually need to set any rx filte 172 * We do not actually need to set any rx filters for the virtual batman
173 * soft interface. However a dummy handler ena 173 * soft interface. However a dummy handler enables a user to set static
174 * multicast listeners for instance. 174 * multicast listeners for instance.
175 */ 175 */
176 static void batadv_interface_set_rx_mode(struc 176 static void batadv_interface_set_rx_mode(struct net_device *dev)
177 { 177 {
178 } 178 }
179 179
180 static netdev_tx_t batadv_interface_tx(struct 180 static netdev_tx_t batadv_interface_tx(struct sk_buff *skb,
181 struct 181 struct net_device *soft_iface)
182 { 182 {
183 struct ethhdr *ethhdr; 183 struct ethhdr *ethhdr;
184 struct batadv_priv *bat_priv = netdev_ 184 struct batadv_priv *bat_priv = netdev_priv(soft_iface);
185 struct batadv_hard_iface *primary_if = 185 struct batadv_hard_iface *primary_if = NULL;
186 struct batadv_bcast_packet *bcast_pack 186 struct batadv_bcast_packet *bcast_packet;
187 static const u8 stp_addr[ETH_ALEN] = { 187 static const u8 stp_addr[ETH_ALEN] = {0x01, 0x80, 0xC2, 0x00,
188 188 0x00, 0x00};
189 static const u8 ectp_addr[ETH_ALEN] = 189 static const u8 ectp_addr[ETH_ALEN] = {0xCF, 0x00, 0x00, 0x00,
190 190 0x00, 0x00};
191 enum batadv_dhcp_recipient dhcp_rcp = 191 enum batadv_dhcp_recipient dhcp_rcp = BATADV_DHCP_NO;
192 u8 *dst_hint = NULL, chaddr[ETH_ALEN]; 192 u8 *dst_hint = NULL, chaddr[ETH_ALEN];
193 struct vlan_ethhdr *vhdr; 193 struct vlan_ethhdr *vhdr;
194 unsigned int header_len = 0; 194 unsigned int header_len = 0;
195 int data_len = skb->len, ret; 195 int data_len = skb->len, ret;
196 unsigned long brd_delay = 0; 196 unsigned long brd_delay = 0;
197 bool do_bcast = false, client_added; 197 bool do_bcast = false, client_added;
198 unsigned short vid; 198 unsigned short vid;
199 u32 seqno; 199 u32 seqno;
200 int gw_mode; 200 int gw_mode;
201 enum batadv_forw_mode forw_mode = BATA 201 enum batadv_forw_mode forw_mode = BATADV_FORW_BCAST;
202 int mcast_is_routable = 0; 202 int mcast_is_routable = 0;
203 int network_offset = ETH_HLEN; 203 int network_offset = ETH_HLEN;
204 __be16 proto; 204 __be16 proto;
205 205
206 if (atomic_read(&bat_priv->mesh_state) 206 if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
207 goto dropped; 207 goto dropped;
208 208
209 /* reset control block to avoid left o 209 /* reset control block to avoid left overs from previous users */
210 memset(skb->cb, 0, sizeof(struct batad 210 memset(skb->cb, 0, sizeof(struct batadv_skb_cb));
211 211
212 netif_trans_update(soft_iface); 212 netif_trans_update(soft_iface);
213 vid = batadv_get_vid(skb, 0); 213 vid = batadv_get_vid(skb, 0);
214 214
215 skb_reset_mac_header(skb); 215 skb_reset_mac_header(skb);
216 ethhdr = eth_hdr(skb); 216 ethhdr = eth_hdr(skb);
217 217
218 proto = ethhdr->h_proto; 218 proto = ethhdr->h_proto;
219 219
220 switch (ntohs(proto)) { 220 switch (ntohs(proto)) {
221 case ETH_P_8021Q: 221 case ETH_P_8021Q:
222 if (!pskb_may_pull(skb, sizeof 222 if (!pskb_may_pull(skb, sizeof(*vhdr)))
223 goto dropped; 223 goto dropped;
224 vhdr = vlan_eth_hdr(skb); 224 vhdr = vlan_eth_hdr(skb);
225 proto = vhdr->h_vlan_encapsula 225 proto = vhdr->h_vlan_encapsulated_proto;
226 226
227 /* drop batman-in-batman packe 227 /* drop batman-in-batman packets to prevent loops */
228 if (proto != htons(ETH_P_BATMA 228 if (proto != htons(ETH_P_BATMAN)) {
229 network_offset += VLAN 229 network_offset += VLAN_HLEN;
230 break; 230 break;
231 } 231 }
232 232
233 fallthrough; 233 fallthrough;
234 case ETH_P_BATMAN: 234 case ETH_P_BATMAN:
235 goto dropped; 235 goto dropped;
236 } 236 }
237 237
238 skb_set_network_header(skb, network_of 238 skb_set_network_header(skb, network_offset);
239 239
240 if (batadv_bla_tx(bat_priv, skb, vid)) 240 if (batadv_bla_tx(bat_priv, skb, vid))
241 goto dropped; 241 goto dropped;
242 242
243 /* skb->data might have been reallocat 243 /* skb->data might have been reallocated by batadv_bla_tx() */
244 ethhdr = eth_hdr(skb); 244 ethhdr = eth_hdr(skb);
245 245
246 /* Register the client MAC in the tran 246 /* Register the client MAC in the transtable */
247 if (!is_multicast_ether_addr(ethhdr->h 247 if (!is_multicast_ether_addr(ethhdr->h_source) &&
248 !batadv_bla_is_loopdetect_mac(ethh 248 !batadv_bla_is_loopdetect_mac(ethhdr->h_source)) {
249 client_added = batadv_tt_local 249 client_added = batadv_tt_local_add(soft_iface, ethhdr->h_source,
250 250 vid, skb->skb_iif,
251 251 skb->mark);
252 if (!client_added) 252 if (!client_added)
253 goto dropped; 253 goto dropped;
254 } 254 }
255 255
256 /* Snoop address candidates from DHCPA 256 /* Snoop address candidates from DHCPACKs for early DAT filling */
257 batadv_dat_snoop_outgoing_dhcp_ack(bat 257 batadv_dat_snoop_outgoing_dhcp_ack(bat_priv, skb, proto, vid);
258 258
259 /* don't accept stp packets. STP does 259 /* don't accept stp packets. STP does not help in meshes.
260 * better use the bridge loop avoidanc 260 * better use the bridge loop avoidance ...
261 * 261 *
262 * The same goes for ECTP sent at leas 262 * The same goes for ECTP sent at least by some Cisco Switches,
263 * it might confuse the mesh when used 263 * it might confuse the mesh when used with bridge loop avoidance.
264 */ 264 */
265 if (batadv_compare_eth(ethhdr->h_dest, 265 if (batadv_compare_eth(ethhdr->h_dest, stp_addr))
266 goto dropped; 266 goto dropped;
267 267
268 if (batadv_compare_eth(ethhdr->h_dest, 268 if (batadv_compare_eth(ethhdr->h_dest, ectp_addr))
269 goto dropped; 269 goto dropped;
270 270
271 gw_mode = atomic_read(&bat_priv->gw.mo 271 gw_mode = atomic_read(&bat_priv->gw.mode);
272 if (is_multicast_ether_addr(ethhdr->h_ 272 if (is_multicast_ether_addr(ethhdr->h_dest)) {
273 /* if gw mode is off, broadcas 273 /* if gw mode is off, broadcast every packet */
274 if (gw_mode == BATADV_GW_MODE_ 274 if (gw_mode == BATADV_GW_MODE_OFF) {
275 do_bcast = true; 275 do_bcast = true;
276 goto send; 276 goto send;
277 } 277 }
278 278
279 dhcp_rcp = batadv_gw_dhcp_reci 279 dhcp_rcp = batadv_gw_dhcp_recipient_get(skb, &header_len,
280 280 chaddr);
281 /* skb->data may have been mod 281 /* skb->data may have been modified by
282 * batadv_gw_dhcp_recipient_ge 282 * batadv_gw_dhcp_recipient_get()
283 */ 283 */
284 ethhdr = eth_hdr(skb); 284 ethhdr = eth_hdr(skb);
285 /* if gw_mode is on, broadcast 285 /* if gw_mode is on, broadcast any non-DHCP message.
286 * All the DHCP packets are go 286 * All the DHCP packets are going to be sent as unicast
287 */ 287 */
288 if (dhcp_rcp == BATADV_DHCP_NO 288 if (dhcp_rcp == BATADV_DHCP_NO) {
289 do_bcast = true; 289 do_bcast = true;
290 goto send; 290 goto send;
291 } 291 }
292 292
293 if (dhcp_rcp == BATADV_DHCP_TO 293 if (dhcp_rcp == BATADV_DHCP_TO_CLIENT)
294 dst_hint = chaddr; 294 dst_hint = chaddr;
295 else if ((gw_mode == BATADV_GW 295 else if ((gw_mode == BATADV_GW_MODE_SERVER) &&
296 (dhcp_rcp == BATADV_D 296 (dhcp_rcp == BATADV_DHCP_TO_SERVER))
297 /* gateways should not 297 /* gateways should not forward any DHCP message if
298 * directed to a DHCP 298 * directed to a DHCP server
299 */ 299 */
300 goto dropped; 300 goto dropped;
301 301
302 send: 302 send:
303 if (do_bcast && !is_broadcast_ 303 if (do_bcast && !is_broadcast_ether_addr(ethhdr->h_dest)) {
304 forw_mode = batadv_mca 304 forw_mode = batadv_mcast_forw_mode(bat_priv, skb, vid,
305 305 &mcast_is_routable);
306 switch (forw_mode) { 306 switch (forw_mode) {
307 case BATADV_FORW_BCAST 307 case BATADV_FORW_BCAST:
308 break; 308 break;
309 case BATADV_FORW_UCAST 309 case BATADV_FORW_UCASTS:
310 case BATADV_FORW_MCAST 310 case BATADV_FORW_MCAST:
311 do_bcast = fal 311 do_bcast = false;
312 break; 312 break;
313 case BATADV_FORW_NONE: 313 case BATADV_FORW_NONE:
314 fallthrough; 314 fallthrough;
315 default: 315 default:
316 goto dropped; 316 goto dropped;
317 } 317 }
318 } 318 }
319 } 319 }
320 320
321 batadv_skb_set_priority(skb, 0); 321 batadv_skb_set_priority(skb, 0);
322 322
323 /* ethernet packet should be broadcast 323 /* ethernet packet should be broadcasted */
324 if (do_bcast) { 324 if (do_bcast) {
325 primary_if = batadv_primary_if 325 primary_if = batadv_primary_if_get_selected(bat_priv);
326 if (!primary_if) 326 if (!primary_if)
327 goto dropped; 327 goto dropped;
328 328
329 /* in case of ARP request, we 329 /* in case of ARP request, we do not immediately broadcasti the
330 * packet, instead we first wa 330 * packet, instead we first wait for DAT to try to retrieve the
331 * correct ARP entry 331 * correct ARP entry
332 */ 332 */
333 if (batadv_dat_snoop_outgoing_ 333 if (batadv_dat_snoop_outgoing_arp_request(bat_priv, skb))
334 brd_delay = msecs_to_j 334 brd_delay = msecs_to_jiffies(ARP_REQ_DELAY);
335 335
336 if (batadv_skb_head_push(skb, 336 if (batadv_skb_head_push(skb, sizeof(*bcast_packet)) < 0)
337 goto dropped; 337 goto dropped;
338 338
339 bcast_packet = (struct batadv_ 339 bcast_packet = (struct batadv_bcast_packet *)skb->data;
340 bcast_packet->version = BATADV 340 bcast_packet->version = BATADV_COMPAT_VERSION;
341 bcast_packet->ttl = BATADV_TTL 341 bcast_packet->ttl = BATADV_TTL - 1;
342 342
343 /* batman packet type: broadca 343 /* batman packet type: broadcast */
344 bcast_packet->packet_type = BA 344 bcast_packet->packet_type = BATADV_BCAST;
345 bcast_packet->reserved = 0; 345 bcast_packet->reserved = 0;
346 346
347 /* hw address of first interfa 347 /* hw address of first interface is the orig mac because only
348 * this mac is known throughou 348 * this mac is known throughout the mesh
349 */ 349 */
350 ether_addr_copy(bcast_packet-> 350 ether_addr_copy(bcast_packet->orig,
351 primary_if->ne 351 primary_if->net_dev->dev_addr);
352 352
353 /* set broadcast sequence numb 353 /* set broadcast sequence number */
354 seqno = atomic_inc_return(&bat 354 seqno = atomic_inc_return(&bat_priv->bcast_seqno);
355 bcast_packet->seqno = htonl(se 355 bcast_packet->seqno = htonl(seqno);
356 356
357 batadv_send_bcast_packet(bat_p 357 batadv_send_bcast_packet(bat_priv, skb, brd_delay, true);
358 /* unicast packet */ 358 /* unicast packet */
359 } else { 359 } else {
360 /* DHCP packets going to a ser 360 /* DHCP packets going to a server will use the GW feature */
361 if (dhcp_rcp == BATADV_DHCP_TO 361 if (dhcp_rcp == BATADV_DHCP_TO_SERVER) {
362 ret = batadv_gw_out_of 362 ret = batadv_gw_out_of_range(bat_priv, skb);
363 if (ret) 363 if (ret)
364 goto dropped; 364 goto dropped;
365 ret = batadv_send_skb_ 365 ret = batadv_send_skb_via_gw(bat_priv, skb, vid);
366 } else if (forw_mode == BATADV 366 } else if (forw_mode == BATADV_FORW_UCASTS) {
367 ret = batadv_mcast_for 367 ret = batadv_mcast_forw_send(bat_priv, skb, vid,
368 368 mcast_is_routable);
369 } else if (forw_mode == BATADV 369 } else if (forw_mode == BATADV_FORW_MCAST) {
370 ret = batadv_mcast_for 370 ret = batadv_mcast_forw_mcsend(bat_priv, skb);
371 } else { 371 } else {
372 if (batadv_dat_snoop_o 372 if (batadv_dat_snoop_outgoing_arp_request(bat_priv,
373 373 skb))
374 goto dropped; 374 goto dropped;
375 375
376 batadv_dat_snoop_outgo 376 batadv_dat_snoop_outgoing_arp_reply(bat_priv, skb);
377 377
378 ret = batadv_send_skb_ 378 ret = batadv_send_skb_via_tt(bat_priv, skb, dst_hint,
379 379 vid);
380 } 380 }
381 if (ret != NET_XMIT_SUCCESS) 381 if (ret != NET_XMIT_SUCCESS)
382 goto dropped_freed; 382 goto dropped_freed;
383 } 383 }
384 384
385 batadv_inc_counter(bat_priv, BATADV_CN 385 batadv_inc_counter(bat_priv, BATADV_CNT_TX);
386 batadv_add_counter(bat_priv, BATADV_CN 386 batadv_add_counter(bat_priv, BATADV_CNT_TX_BYTES, data_len);
387 goto end; 387 goto end;
388 388
389 dropped: 389 dropped:
390 kfree_skb(skb); 390 kfree_skb(skb);
391 dropped_freed: 391 dropped_freed:
392 batadv_inc_counter(bat_priv, BATADV_CN 392 batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED);
393 end: 393 end:
394 batadv_hardif_put(primary_if); 394 batadv_hardif_put(primary_if);
395 return NETDEV_TX_OK; 395 return NETDEV_TX_OK;
396 } 396 }
397 397
398 /** 398 /**
399 * batadv_interface_rx() - receive ethernet fr 399 * batadv_interface_rx() - receive ethernet frame on local batman-adv interface
400 * @soft_iface: local interface which will rec 400 * @soft_iface: local interface which will receive the ethernet frame
401 * @skb: ethernet frame for @soft_iface 401 * @skb: ethernet frame for @soft_iface
402 * @hdr_size: size of already parsed batman-ad 402 * @hdr_size: size of already parsed batman-adv header
403 * @orig_node: originator from which the batma 403 * @orig_node: originator from which the batman-adv packet was sent
404 * 404 *
405 * Sends an ethernet frame to the receive path 405 * Sends an ethernet frame to the receive path of the local @soft_iface.
406 * skb->data has still point to the batman-adv 406 * skb->data has still point to the batman-adv header with the size @hdr_size.
407 * The caller has to have parsed this header a 407 * The caller has to have parsed this header already and made sure that at least
408 * @hdr_size bytes are still available for pul 408 * @hdr_size bytes are still available for pull in @skb.
409 * 409 *
410 * The packet may still get dropped. This can 410 * The packet may still get dropped. This can happen when the encapsulated
411 * ethernet frame is invalid or contains again 411 * ethernet frame is invalid or contains again an batman-adv packet. Also
412 * unicast packets will be dropped directly wh 412 * unicast packets will be dropped directly when it was sent between two
413 * isolated clients. 413 * isolated clients.
414 */ 414 */
415 void batadv_interface_rx(struct net_device *so 415 void batadv_interface_rx(struct net_device *soft_iface,
416 struct sk_buff *skb, 416 struct sk_buff *skb, int hdr_size,
417 struct batadv_orig_no 417 struct batadv_orig_node *orig_node)
418 { 418 {
419 struct batadv_bcast_packet *batadv_bca 419 struct batadv_bcast_packet *batadv_bcast_packet;
420 struct batadv_priv *bat_priv = netdev_ 420 struct batadv_priv *bat_priv = netdev_priv(soft_iface);
421 struct vlan_ethhdr *vhdr; 421 struct vlan_ethhdr *vhdr;
422 struct ethhdr *ethhdr; 422 struct ethhdr *ethhdr;
423 unsigned short vid; 423 unsigned short vid;
424 int packet_type; 424 int packet_type;
425 425
426 batadv_bcast_packet = (struct batadv_b 426 batadv_bcast_packet = (struct batadv_bcast_packet *)skb->data;
427 packet_type = batadv_bcast_packet->pac 427 packet_type = batadv_bcast_packet->packet_type;
428 428
429 skb_pull_rcsum(skb, hdr_size); 429 skb_pull_rcsum(skb, hdr_size);
430 skb_reset_mac_header(skb); 430 skb_reset_mac_header(skb);
431 431
432 /* clean the netfilter state now that 432 /* clean the netfilter state now that the batman-adv header has been
433 * removed 433 * removed
434 */ 434 */
435 nf_reset_ct(skb); 435 nf_reset_ct(skb);
436 436
437 if (unlikely(!pskb_may_pull(skb, ETH_H 437 if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
438 goto dropped; 438 goto dropped;
439 439
440 vid = batadv_get_vid(skb, 0); 440 vid = batadv_get_vid(skb, 0);
441 ethhdr = eth_hdr(skb); 441 ethhdr = eth_hdr(skb);
442 442
443 switch (ntohs(ethhdr->h_proto)) { 443 switch (ntohs(ethhdr->h_proto)) {
444 case ETH_P_8021Q: 444 case ETH_P_8021Q:
445 if (!pskb_may_pull(skb, VLAN_E 445 if (!pskb_may_pull(skb, VLAN_ETH_HLEN))
446 goto dropped; 446 goto dropped;
447 447
448 vhdr = skb_vlan_eth_hdr(skb); 448 vhdr = skb_vlan_eth_hdr(skb);
449 449
450 /* drop batman-in-batman packe 450 /* drop batman-in-batman packets to prevent loops */
451 if (vhdr->h_vlan_encapsulated_ 451 if (vhdr->h_vlan_encapsulated_proto != htons(ETH_P_BATMAN))
452 break; 452 break;
453 453
454 fallthrough; 454 fallthrough;
455 case ETH_P_BATMAN: 455 case ETH_P_BATMAN:
456 goto dropped; 456 goto dropped;
457 } 457 }
458 458
459 /* skb->dev & skb->pkt_type are set he 459 /* skb->dev & skb->pkt_type are set here */
460 skb->protocol = eth_type_trans(skb, so 460 skb->protocol = eth_type_trans(skb, soft_iface);
461 skb_postpull_rcsum(skb, eth_hdr(skb), 461 skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
462 462
463 batadv_inc_counter(bat_priv, BATADV_CN 463 batadv_inc_counter(bat_priv, BATADV_CNT_RX);
464 batadv_add_counter(bat_priv, BATADV_CN 464 batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES,
465 skb->len + ETH_HLEN 465 skb->len + ETH_HLEN);
466 466
467 /* Let the bridge loop avoidance check 467 /* Let the bridge loop avoidance check the packet. If will
468 * not handle it, we can safely push i 468 * not handle it, we can safely push it up.
469 */ 469 */
470 if (batadv_bla_rx(bat_priv, skb, vid, 470 if (batadv_bla_rx(bat_priv, skb, vid, packet_type))
471 goto out; 471 goto out;
472 472
473 if (orig_node) 473 if (orig_node)
474 batadv_tt_add_temporary_global 474 batadv_tt_add_temporary_global_entry(bat_priv, orig_node,
475 475 ethhdr->h_source, vid);
476 476
477 if (is_multicast_ether_addr(ethhdr->h_ 477 if (is_multicast_ether_addr(ethhdr->h_dest)) {
478 /* set the mark on broadcast p 478 /* set the mark on broadcast packets if AP isolation is ON and
479 * the packet is coming from a 479 * the packet is coming from an "isolated" client
480 */ 480 */
481 if (batadv_vlan_ap_isola_get(b 481 if (batadv_vlan_ap_isola_get(bat_priv, vid) &&
482 batadv_tt_global_is_isolat 482 batadv_tt_global_is_isolated(bat_priv, ethhdr->h_source,
483 483 vid)) {
484 /* save bits in skb->m 484 /* save bits in skb->mark not covered by the mask and
485 * apply the mark on t 485 * apply the mark on the rest
486 */ 486 */
487 skb->mark &= ~bat_priv 487 skb->mark &= ~bat_priv->isolation_mark_mask;
488 skb->mark |= bat_priv- 488 skb->mark |= bat_priv->isolation_mark;
489 } 489 }
490 } else if (batadv_is_ap_isolated(bat_p 490 } else if (batadv_is_ap_isolated(bat_priv, ethhdr->h_source,
491 ethhd 491 ethhdr->h_dest, vid)) {
492 goto dropped; 492 goto dropped;
493 } 493 }
494 494
495 netif_rx(skb); 495 netif_rx(skb);
496 goto out; 496 goto out;
497 497
498 dropped: 498 dropped:
499 kfree_skb(skb); 499 kfree_skb(skb);
500 out: 500 out:
501 return; 501 return;
502 } 502 }
503 503
504 /** 504 /**
505 * batadv_softif_vlan_release() - release vlan 505 * batadv_softif_vlan_release() - release vlan from lists and queue for free
506 * after rcu grace period 506 * after rcu grace period
507 * @ref: kref pointer of the vlan object 507 * @ref: kref pointer of the vlan object
508 */ 508 */
509 void batadv_softif_vlan_release(struct kref *r 509 void batadv_softif_vlan_release(struct kref *ref)
510 { 510 {
511 struct batadv_softif_vlan *vlan; 511 struct batadv_softif_vlan *vlan;
512 512
513 vlan = container_of(ref, struct batadv 513 vlan = container_of(ref, struct batadv_softif_vlan, refcount);
514 514
515 spin_lock_bh(&vlan->bat_priv->softif_v 515 spin_lock_bh(&vlan->bat_priv->softif_vlan_list_lock);
516 hlist_del_rcu(&vlan->list); 516 hlist_del_rcu(&vlan->list);
517 spin_unlock_bh(&vlan->bat_priv->softif 517 spin_unlock_bh(&vlan->bat_priv->softif_vlan_list_lock);
518 518
519 kfree_rcu(vlan, rcu); 519 kfree_rcu(vlan, rcu);
520 } 520 }
521 521
522 /** 522 /**
523 * batadv_softif_vlan_get() - get the vlan obj 523 * batadv_softif_vlan_get() - get the vlan object for a specific vid
524 * @bat_priv: the bat priv with all the soft i 524 * @bat_priv: the bat priv with all the soft interface information
525 * @vid: the identifier of the vlan object to 525 * @vid: the identifier of the vlan object to retrieve
526 * 526 *
527 * Return: the private data of the vlan matchi 527 * Return: the private data of the vlan matching the vid passed as argument or
528 * NULL otherwise. The refcounter of the retur 528 * NULL otherwise. The refcounter of the returned object is incremented by 1.
529 */ 529 */
530 struct batadv_softif_vlan *batadv_softif_vlan_ 530 struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv,
531 531 unsigned short vid)
532 { 532 {
533 struct batadv_softif_vlan *vlan_tmp, * 533 struct batadv_softif_vlan *vlan_tmp, *vlan = NULL;
534 534
535 rcu_read_lock(); 535 rcu_read_lock();
536 hlist_for_each_entry_rcu(vlan_tmp, &ba 536 hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) {
537 if (vlan_tmp->vid != vid) 537 if (vlan_tmp->vid != vid)
538 continue; 538 continue;
539 539
540 if (!kref_get_unless_zero(&vla 540 if (!kref_get_unless_zero(&vlan_tmp->refcount))
541 continue; 541 continue;
542 542
543 vlan = vlan_tmp; 543 vlan = vlan_tmp;
544 break; 544 break;
545 } 545 }
546 rcu_read_unlock(); 546 rcu_read_unlock();
547 547
548 return vlan; 548 return vlan;
549 } 549 }
550 550
551 /** 551 /**
552 * batadv_softif_create_vlan() - allocate the 552 * batadv_softif_create_vlan() - allocate the needed resources for a new vlan
553 * @bat_priv: the bat priv with all the soft i 553 * @bat_priv: the bat priv with all the soft interface information
554 * @vid: the VLAN identifier 554 * @vid: the VLAN identifier
555 * 555 *
556 * Return: 0 on success, a negative error othe 556 * Return: 0 on success, a negative error otherwise.
557 */ 557 */
558 int batadv_softif_create_vlan(struct batadv_pr 558 int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid)
559 { 559 {
560 struct batadv_softif_vlan *vlan; 560 struct batadv_softif_vlan *vlan;
561 561
562 spin_lock_bh(&bat_priv->softif_vlan_li 562 spin_lock_bh(&bat_priv->softif_vlan_list_lock);
563 563
564 vlan = batadv_softif_vlan_get(bat_priv 564 vlan = batadv_softif_vlan_get(bat_priv, vid);
565 if (vlan) { 565 if (vlan) {
566 batadv_softif_vlan_put(vlan); 566 batadv_softif_vlan_put(vlan);
567 spin_unlock_bh(&bat_priv->soft 567 spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
568 return -EEXIST; 568 return -EEXIST;
569 } 569 }
570 570
571 vlan = kzalloc(sizeof(*vlan), GFP_ATOM 571 vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC);
572 if (!vlan) { 572 if (!vlan) {
573 spin_unlock_bh(&bat_priv->soft 573 spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
574 return -ENOMEM; 574 return -ENOMEM;
575 } 575 }
576 576
577 vlan->bat_priv = bat_priv; 577 vlan->bat_priv = bat_priv;
578 vlan->vid = vid; 578 vlan->vid = vid;
579 kref_init(&vlan->refcount); 579 kref_init(&vlan->refcount);
580 580
581 atomic_set(&vlan->ap_isolation, 0); 581 atomic_set(&vlan->ap_isolation, 0);
582 582
583 kref_get(&vlan->refcount); 583 kref_get(&vlan->refcount);
584 hlist_add_head_rcu(&vlan->list, &bat_p 584 hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list);
585 spin_unlock_bh(&bat_priv->softif_vlan_ 585 spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
586 586
587 /* add a new TT local entry. This one 587 /* add a new TT local entry. This one will be marked with the NOPURGE
588 * flag 588 * flag
589 */ 589 */
590 batadv_tt_local_add(bat_priv->soft_ifa 590 batadv_tt_local_add(bat_priv->soft_iface,
591 bat_priv->soft_ifa 591 bat_priv->soft_iface->dev_addr, vid,
592 BATADV_NULL_IFINDE 592 BATADV_NULL_IFINDEX, BATADV_NO_MARK);
593 593
594 /* don't return reference to new softi 594 /* don't return reference to new softif_vlan */
595 batadv_softif_vlan_put(vlan); 595 batadv_softif_vlan_put(vlan);
596 596
597 return 0; 597 return 0;
598 } 598 }
599 599
600 /** 600 /**
601 * batadv_softif_destroy_vlan() - remove and d 601 * batadv_softif_destroy_vlan() - remove and destroy a softif_vlan object
602 * @bat_priv: the bat priv with all the soft i 602 * @bat_priv: the bat priv with all the soft interface information
603 * @vlan: the object to remove 603 * @vlan: the object to remove
604 */ 604 */
605 static void batadv_softif_destroy_vlan(struct 605 static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv,
606 struct 606 struct batadv_softif_vlan *vlan)
607 { 607 {
608 /* explicitly remove the associated TT 608 /* explicitly remove the associated TT local entry because it is marked
609 * with the NOPURGE flag 609 * with the NOPURGE flag
610 */ 610 */
611 batadv_tt_local_remove(bat_priv, bat_p 611 batadv_tt_local_remove(bat_priv, bat_priv->soft_iface->dev_addr,
612 vlan->vid, "vla 612 vlan->vid, "vlan interface destroyed", false);
613 613
614 batadv_softif_vlan_put(vlan); 614 batadv_softif_vlan_put(vlan);
615 } 615 }
616 616
617 /** 617 /**
618 * batadv_interface_add_vid() - ndo_add_vid AP 618 * batadv_interface_add_vid() - ndo_add_vid API implementation
619 * @dev: the netdev of the mesh interface 619 * @dev: the netdev of the mesh interface
620 * @proto: protocol of the vlan id 620 * @proto: protocol of the vlan id
621 * @vid: identifier of the new vlan 621 * @vid: identifier of the new vlan
622 * 622 *
623 * Set up all the internal structures for hand 623 * Set up all the internal structures for handling the new vlan on top of the
624 * mesh interface 624 * mesh interface
625 * 625 *
626 * Return: 0 on success or a negative error co 626 * Return: 0 on success or a negative error code in case of failure.
627 */ 627 */
628 static int batadv_interface_add_vid(struct net 628 static int batadv_interface_add_vid(struct net_device *dev, __be16 proto,
629 unsigned s 629 unsigned short vid)
630 { 630 {
631 struct batadv_priv *bat_priv = netdev_ 631 struct batadv_priv *bat_priv = netdev_priv(dev);
632 struct batadv_softif_vlan *vlan; 632 struct batadv_softif_vlan *vlan;
633 633
634 /* only 802.1Q vlans are supported. 634 /* only 802.1Q vlans are supported.
635 * batman-adv does not know how to han 635 * batman-adv does not know how to handle other types
636 */ 636 */
637 if (proto != htons(ETH_P_8021Q)) 637 if (proto != htons(ETH_P_8021Q))
638 return -EINVAL; 638 return -EINVAL;
639 639
640 vid |= BATADV_VLAN_HAS_TAG; 640 vid |= BATADV_VLAN_HAS_TAG;
641 641
642 /* if a new vlan is getting created an 642 /* if a new vlan is getting created and it already exists, it means that
643 * it was not deleted yet. batadv_soft 643 * it was not deleted yet. batadv_softif_vlan_get() increases the
644 * refcount in order to revive the obj 644 * refcount in order to revive the object.
645 * 645 *
646 * if it does not exist then create it 646 * if it does not exist then create it.
647 */ 647 */
648 vlan = batadv_softif_vlan_get(bat_priv 648 vlan = batadv_softif_vlan_get(bat_priv, vid);
649 if (!vlan) 649 if (!vlan)
650 return batadv_softif_create_vl 650 return batadv_softif_create_vlan(bat_priv, vid);
651 651
652 /* add a new TT local entry. This one 652 /* add a new TT local entry. This one will be marked with the NOPURGE
653 * flag. This must be added again, eve 653 * flag. This must be added again, even if the vlan object already
654 * exists, because the entry was delet 654 * exists, because the entry was deleted by kill_vid()
655 */ 655 */
656 batadv_tt_local_add(bat_priv->soft_ifa 656 batadv_tt_local_add(bat_priv->soft_iface,
657 bat_priv->soft_ifa 657 bat_priv->soft_iface->dev_addr, vid,
658 BATADV_NULL_IFINDE 658 BATADV_NULL_IFINDEX, BATADV_NO_MARK);
659 659
660 return 0; 660 return 0;
661 } 661 }
662 662
663 /** 663 /**
664 * batadv_interface_kill_vid() - ndo_kill_vid 664 * batadv_interface_kill_vid() - ndo_kill_vid API implementation
665 * @dev: the netdev of the mesh interface 665 * @dev: the netdev of the mesh interface
666 * @proto: protocol of the vlan id 666 * @proto: protocol of the vlan id
667 * @vid: identifier of the deleted vlan 667 * @vid: identifier of the deleted vlan
668 * 668 *
669 * Destroy all the internal structures used to 669 * Destroy all the internal structures used to handle the vlan identified by vid
670 * on top of the mesh interface 670 * on top of the mesh interface
671 * 671 *
672 * Return: 0 on success, -EINVAL if the specif 672 * Return: 0 on success, -EINVAL if the specified prototype is not ETH_P_8021Q
673 * or -ENOENT if the specified vlan id wasn't 673 * or -ENOENT if the specified vlan id wasn't registered.
674 */ 674 */
675 static int batadv_interface_kill_vid(struct ne 675 static int batadv_interface_kill_vid(struct net_device *dev, __be16 proto,
676 unsigned 676 unsigned short vid)
677 { 677 {
678 struct batadv_priv *bat_priv = netdev_ 678 struct batadv_priv *bat_priv = netdev_priv(dev);
679 struct batadv_softif_vlan *vlan; 679 struct batadv_softif_vlan *vlan;
680 680
681 /* only 802.1Q vlans are supported. ba 681 /* only 802.1Q vlans are supported. batman-adv does not know how to
682 * handle other types 682 * handle other types
683 */ 683 */
684 if (proto != htons(ETH_P_8021Q)) 684 if (proto != htons(ETH_P_8021Q))
685 return -EINVAL; 685 return -EINVAL;
686 686
687 vlan = batadv_softif_vlan_get(bat_priv 687 vlan = batadv_softif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG);
688 if (!vlan) 688 if (!vlan)
689 return -ENOENT; 689 return -ENOENT;
690 690
691 batadv_softif_destroy_vlan(bat_priv, v 691 batadv_softif_destroy_vlan(bat_priv, vlan);
692 692
693 /* finally free the vlan object */ 693 /* finally free the vlan object */
694 batadv_softif_vlan_put(vlan); 694 batadv_softif_vlan_put(vlan);
695 695
696 return 0; 696 return 0;
697 } 697 }
698 698
699 /* batman-adv network devices have devices nes 699 /* batman-adv network devices have devices nesting below it and are a special
700 * "super class" of normal network devices; sp 700 * "super class" of normal network devices; split their locks off into a
701 * separate class since they always nest. 701 * separate class since they always nest.
702 */ 702 */
703 static struct lock_class_key batadv_netdev_xmi 703 static struct lock_class_key batadv_netdev_xmit_lock_key;
704 static struct lock_class_key batadv_netdev_add 704 static struct lock_class_key batadv_netdev_addr_lock_key;
705 705
706 /** 706 /**
707 * batadv_set_lockdep_class_one() - Set lockde 707 * batadv_set_lockdep_class_one() - Set lockdep class for a single tx queue
708 * @dev: device which owns the tx queue 708 * @dev: device which owns the tx queue
709 * @txq: tx queue to modify 709 * @txq: tx queue to modify
710 * @_unused: always NULL 710 * @_unused: always NULL
711 */ 711 */
712 static void batadv_set_lockdep_class_one(struc 712 static void batadv_set_lockdep_class_one(struct net_device *dev,
713 struc 713 struct netdev_queue *txq,
714 void 714 void *_unused)
715 { 715 {
716 lockdep_set_class(&txq->_xmit_lock, &b 716 lockdep_set_class(&txq->_xmit_lock, &batadv_netdev_xmit_lock_key);
717 } 717 }
718 718
719 /** 719 /**
720 * batadv_set_lockdep_class() - Set txq and ad 720 * batadv_set_lockdep_class() - Set txq and addr_list lockdep class
721 * @dev: network device to modify 721 * @dev: network device to modify
722 */ 722 */
723 static void batadv_set_lockdep_class(struct ne 723 static void batadv_set_lockdep_class(struct net_device *dev)
724 { 724 {
725 lockdep_set_class(&dev->addr_list_lock 725 lockdep_set_class(&dev->addr_list_lock, &batadv_netdev_addr_lock_key);
726 netdev_for_each_tx_queue(dev, batadv_s 726 netdev_for_each_tx_queue(dev, batadv_set_lockdep_class_one, NULL);
727 } 727 }
728 728
729 /** 729 /**
730 * batadv_softif_init_late() - late stage init 730 * batadv_softif_init_late() - late stage initialization of soft interface
731 * @dev: registered network device to modify 731 * @dev: registered network device to modify
732 * 732 *
733 * Return: error code on failures 733 * Return: error code on failures
734 */ 734 */
735 static int batadv_softif_init_late(struct net_ 735 static int batadv_softif_init_late(struct net_device *dev)
736 { 736 {
737 struct batadv_priv *bat_priv; 737 struct batadv_priv *bat_priv;
738 u32 random_seqno; 738 u32 random_seqno;
739 int ret; 739 int ret;
740 size_t cnt_len = sizeof(u64) * BATADV_ 740 size_t cnt_len = sizeof(u64) * BATADV_CNT_NUM;
741 741
742 batadv_set_lockdep_class(dev); 742 batadv_set_lockdep_class(dev);
743 743
744 bat_priv = netdev_priv(dev); 744 bat_priv = netdev_priv(dev);
745 bat_priv->soft_iface = dev; 745 bat_priv->soft_iface = dev;
746 746
747 /* batadv_interface_stats() needs to b 747 /* batadv_interface_stats() needs to be available as soon as
748 * register_netdevice() has been calle 748 * register_netdevice() has been called
749 */ 749 */
750 bat_priv->bat_counters = __alloc_percp 750 bat_priv->bat_counters = __alloc_percpu(cnt_len, __alignof__(u64));
751 if (!bat_priv->bat_counters) 751 if (!bat_priv->bat_counters)
752 return -ENOMEM; 752 return -ENOMEM;
753 753
754 atomic_set(&bat_priv->aggregated_ogms, 754 atomic_set(&bat_priv->aggregated_ogms, 1);
755 atomic_set(&bat_priv->bonding, 0); 755 atomic_set(&bat_priv->bonding, 0);
756 #ifdef CONFIG_BATMAN_ADV_BLA 756 #ifdef CONFIG_BATMAN_ADV_BLA
757 atomic_set(&bat_priv->bridge_loop_avoi 757 atomic_set(&bat_priv->bridge_loop_avoidance, 1);
758 #endif 758 #endif
759 #ifdef CONFIG_BATMAN_ADV_DAT 759 #ifdef CONFIG_BATMAN_ADV_DAT
760 atomic_set(&bat_priv->distributed_arp_ 760 atomic_set(&bat_priv->distributed_arp_table, 1);
761 #endif 761 #endif
762 #ifdef CONFIG_BATMAN_ADV_MCAST 762 #ifdef CONFIG_BATMAN_ADV_MCAST
763 atomic_set(&bat_priv->multicast_mode, 763 atomic_set(&bat_priv->multicast_mode, 1);
764 atomic_set(&bat_priv->multicast_fanout 764 atomic_set(&bat_priv->multicast_fanout, 16);
765 atomic_set(&bat_priv->mcast.num_want_a 765 atomic_set(&bat_priv->mcast.num_want_all_unsnoopables, 0);
766 atomic_set(&bat_priv->mcast.num_want_a 766 atomic_set(&bat_priv->mcast.num_want_all_ipv4, 0);
767 atomic_set(&bat_priv->mcast.num_want_a 767 atomic_set(&bat_priv->mcast.num_want_all_ipv6, 0);
768 atomic_set(&bat_priv->mcast.num_no_mc_ 768 atomic_set(&bat_priv->mcast.num_no_mc_ptype_capa, 0);
769 #endif 769 #endif
770 atomic_set(&bat_priv->gw.mode, BATADV_ 770 atomic_set(&bat_priv->gw.mode, BATADV_GW_MODE_OFF);
771 atomic_set(&bat_priv->gw.bandwidth_dow 771 atomic_set(&bat_priv->gw.bandwidth_down, 100);
772 atomic_set(&bat_priv->gw.bandwidth_up, 772 atomic_set(&bat_priv->gw.bandwidth_up, 20);
773 atomic_set(&bat_priv->orig_interval, 1 773 atomic_set(&bat_priv->orig_interval, 1000);
774 atomic_set(&bat_priv->hop_penalty, 30) 774 atomic_set(&bat_priv->hop_penalty, 30);
775 #ifdef CONFIG_BATMAN_ADV_DEBUG 775 #ifdef CONFIG_BATMAN_ADV_DEBUG
776 atomic_set(&bat_priv->log_level, 0); 776 atomic_set(&bat_priv->log_level, 0);
777 #endif 777 #endif
778 atomic_set(&bat_priv->fragmentation, 1 778 atomic_set(&bat_priv->fragmentation, 1);
779 atomic_set(&bat_priv->packet_size_max, 779 atomic_set(&bat_priv->packet_size_max, ETH_DATA_LEN);
780 atomic_set(&bat_priv->bcast_queue_left 780 atomic_set(&bat_priv->bcast_queue_left, BATADV_BCAST_QUEUE_LEN);
781 atomic_set(&bat_priv->batman_queue_lef 781 atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN);
782 782
783 atomic_set(&bat_priv->mesh_state, BATA 783 atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE);
784 atomic_set(&bat_priv->bcast_seqno, 1); 784 atomic_set(&bat_priv->bcast_seqno, 1);
785 atomic_set(&bat_priv->tt.vn, 0); 785 atomic_set(&bat_priv->tt.vn, 0);
786 atomic_set(&bat_priv->tt.local_changes 786 atomic_set(&bat_priv->tt.local_changes, 0);
787 atomic_set(&bat_priv->tt.ogm_append_cn 787 atomic_set(&bat_priv->tt.ogm_append_cnt, 0);
788 #ifdef CONFIG_BATMAN_ADV_BLA 788 #ifdef CONFIG_BATMAN_ADV_BLA
789 atomic_set(&bat_priv->bla.num_requests 789 atomic_set(&bat_priv->bla.num_requests, 0);
790 #endif 790 #endif
791 atomic_set(&bat_priv->tp_num, 0); 791 atomic_set(&bat_priv->tp_num, 0);
792 792
793 bat_priv->tt.last_changeset = NULL; 793 bat_priv->tt.last_changeset = NULL;
794 bat_priv->tt.last_changeset_len = 0; 794 bat_priv->tt.last_changeset_len = 0;
795 bat_priv->isolation_mark = 0; 795 bat_priv->isolation_mark = 0;
796 bat_priv->isolation_mark_mask = 0; 796 bat_priv->isolation_mark_mask = 0;
797 797
798 /* randomize initial seqno to avoid co 798 /* randomize initial seqno to avoid collision */
799 get_random_bytes(&random_seqno, sizeof 799 get_random_bytes(&random_seqno, sizeof(random_seqno));
800 atomic_set(&bat_priv->frag_seqno, rand 800 atomic_set(&bat_priv->frag_seqno, random_seqno);
801 801
802 bat_priv->primary_if = NULL; 802 bat_priv->primary_if = NULL;
803 803
804 batadv_nc_init_bat_priv(bat_priv); 804 batadv_nc_init_bat_priv(bat_priv);
805 805
806 if (!bat_priv->algo_ops) { 806 if (!bat_priv->algo_ops) {
807 ret = batadv_algo_select(bat_p 807 ret = batadv_algo_select(bat_priv, batadv_routing_algo);
808 if (ret < 0) 808 if (ret < 0)
809 goto free_bat_counters 809 goto free_bat_counters;
810 } 810 }
811 811
812 ret = batadv_mesh_init(dev); 812 ret = batadv_mesh_init(dev);
813 if (ret < 0) 813 if (ret < 0)
814 goto free_bat_counters; 814 goto free_bat_counters;
815 815
816 return 0; 816 return 0;
817 817
818 free_bat_counters: 818 free_bat_counters:
819 free_percpu(bat_priv->bat_counters); 819 free_percpu(bat_priv->bat_counters);
820 bat_priv->bat_counters = NULL; 820 bat_priv->bat_counters = NULL;
821 821
822 return ret; 822 return ret;
823 } 823 }
824 824
825 /** 825 /**
826 * batadv_softif_slave_add() - Add a slave int 826 * batadv_softif_slave_add() - Add a slave interface to a batadv_soft_interface
827 * @dev: batadv_soft_interface used as master 827 * @dev: batadv_soft_interface used as master interface
828 * @slave_dev: net_device which should become 828 * @slave_dev: net_device which should become the slave interface
829 * @extack: extended ACK report struct 829 * @extack: extended ACK report struct
830 * 830 *
831 * Return: 0 if successful or error otherwise. 831 * Return: 0 if successful or error otherwise.
832 */ 832 */
833 static int batadv_softif_slave_add(struct net_ 833 static int batadv_softif_slave_add(struct net_device *dev,
834 struct net_ 834 struct net_device *slave_dev,
835 struct netl 835 struct netlink_ext_ack *extack)
836 { 836 {
837 struct batadv_hard_iface *hard_iface; 837 struct batadv_hard_iface *hard_iface;
838 int ret = -EINVAL; 838 int ret = -EINVAL;
839 839
840 hard_iface = batadv_hardif_get_by_netd 840 hard_iface = batadv_hardif_get_by_netdev(slave_dev);
841 if (!hard_iface || hard_iface->soft_if 841 if (!hard_iface || hard_iface->soft_iface)
842 goto out; 842 goto out;
843 843
844 ret = batadv_hardif_enable_interface(h 844 ret = batadv_hardif_enable_interface(hard_iface, dev);
845 845
846 out: 846 out:
847 batadv_hardif_put(hard_iface); 847 batadv_hardif_put(hard_iface);
848 return ret; 848 return ret;
849 } 849 }
850 850
851 /** 851 /**
852 * batadv_softif_slave_del() - Delete a slave 852 * batadv_softif_slave_del() - Delete a slave iface from a batadv_soft_interface
853 * @dev: batadv_soft_interface used as master 853 * @dev: batadv_soft_interface used as master interface
854 * @slave_dev: net_device which should be remo 854 * @slave_dev: net_device which should be removed from the master interface
855 * 855 *
856 * Return: 0 if successful or error otherwise. 856 * Return: 0 if successful or error otherwise.
857 */ 857 */
858 static int batadv_softif_slave_del(struct net_ 858 static int batadv_softif_slave_del(struct net_device *dev,
859 struct net_ 859 struct net_device *slave_dev)
860 { 860 {
861 struct batadv_hard_iface *hard_iface; 861 struct batadv_hard_iface *hard_iface;
862 int ret = -EINVAL; 862 int ret = -EINVAL;
863 863
864 hard_iface = batadv_hardif_get_by_netd 864 hard_iface = batadv_hardif_get_by_netdev(slave_dev);
865 865
866 if (!hard_iface || hard_iface->soft_if 866 if (!hard_iface || hard_iface->soft_iface != dev)
867 goto out; 867 goto out;
868 868
869 batadv_hardif_disable_interface(hard_i 869 batadv_hardif_disable_interface(hard_iface);
870 ret = 0; 870 ret = 0;
871 871
872 out: 872 out:
873 batadv_hardif_put(hard_iface); 873 batadv_hardif_put(hard_iface);
874 return ret; 874 return ret;
875 } 875 }
876 876
877 static const struct net_device_ops batadv_netd 877 static const struct net_device_ops batadv_netdev_ops = {
878 .ndo_init = batadv_softif_init_late, 878 .ndo_init = batadv_softif_init_late,
879 .ndo_open = batadv_interface_open, 879 .ndo_open = batadv_interface_open,
880 .ndo_stop = batadv_interface_release, 880 .ndo_stop = batadv_interface_release,
881 .ndo_get_stats = batadv_interface_stat 881 .ndo_get_stats = batadv_interface_stats,
882 .ndo_vlan_rx_add_vid = batadv_interfac 882 .ndo_vlan_rx_add_vid = batadv_interface_add_vid,
883 .ndo_vlan_rx_kill_vid = batadv_interfa 883 .ndo_vlan_rx_kill_vid = batadv_interface_kill_vid,
884 .ndo_set_mac_address = batadv_interfac 884 .ndo_set_mac_address = batadv_interface_set_mac_addr,
885 .ndo_change_mtu = batadv_interface_cha 885 .ndo_change_mtu = batadv_interface_change_mtu,
886 .ndo_set_rx_mode = batadv_interface_se 886 .ndo_set_rx_mode = batadv_interface_set_rx_mode,
887 .ndo_start_xmit = batadv_interface_tx, 887 .ndo_start_xmit = batadv_interface_tx,
888 .ndo_validate_addr = eth_validate_addr 888 .ndo_validate_addr = eth_validate_addr,
889 .ndo_add_slave = batadv_softif_slave_a 889 .ndo_add_slave = batadv_softif_slave_add,
890 .ndo_del_slave = batadv_softif_slave_d 890 .ndo_del_slave = batadv_softif_slave_del,
891 }; 891 };
892 892
893 static void batadv_get_drvinfo(struct net_devi 893 static void batadv_get_drvinfo(struct net_device *dev,
894 struct ethtool_ 894 struct ethtool_drvinfo *info)
895 { 895 {
896 strscpy(info->driver, "B.A.T.M.A.N. ad 896 strscpy(info->driver, "B.A.T.M.A.N. advanced", sizeof(info->driver));
897 strscpy(info->version, BATADV_SOURCE_V 897 strscpy(info->version, BATADV_SOURCE_VERSION, sizeof(info->version));
898 strscpy(info->fw_version, "N/A", sizeo 898 strscpy(info->fw_version, "N/A", sizeof(info->fw_version));
899 strscpy(info->bus_info, "batman", size 899 strscpy(info->bus_info, "batman", sizeof(info->bus_info));
900 } 900 }
901 901
902 /* Inspired by drivers/net/ethernet/dlink/sund 902 /* Inspired by drivers/net/ethernet/dlink/sundance.c:1702
903 * Declare each description string in struct.n 903 * Declare each description string in struct.name[] to get fixed sized buffer
904 * and compile time checking for strings longe 904 * and compile time checking for strings longer than ETH_GSTRING_LEN.
905 */ 905 */
906 static const struct { 906 static const struct {
907 const char name[ETH_GSTRING_LEN]; 907 const char name[ETH_GSTRING_LEN];
908 } batadv_counters_strings[] = { 908 } batadv_counters_strings[] = {
909 { "tx" }, 909 { "tx" },
910 { "tx_bytes" }, 910 { "tx_bytes" },
911 { "tx_dropped" }, 911 { "tx_dropped" },
912 { "rx" }, 912 { "rx" },
913 { "rx_bytes" }, 913 { "rx_bytes" },
914 { "forward" }, 914 { "forward" },
915 { "forward_bytes" }, 915 { "forward_bytes" },
916 { "mgmt_tx" }, 916 { "mgmt_tx" },
917 { "mgmt_tx_bytes" }, 917 { "mgmt_tx_bytes" },
918 { "mgmt_rx" }, 918 { "mgmt_rx" },
919 { "mgmt_rx_bytes" }, 919 { "mgmt_rx_bytes" },
920 { "frag_tx" }, 920 { "frag_tx" },
921 { "frag_tx_bytes" }, 921 { "frag_tx_bytes" },
922 { "frag_rx" }, 922 { "frag_rx" },
923 { "frag_rx_bytes" }, 923 { "frag_rx_bytes" },
924 { "frag_fwd" }, 924 { "frag_fwd" },
925 { "frag_fwd_bytes" }, 925 { "frag_fwd_bytes" },
926 { "tt_request_tx" }, 926 { "tt_request_tx" },
927 { "tt_request_rx" }, 927 { "tt_request_rx" },
928 { "tt_response_tx" }, 928 { "tt_response_tx" },
929 { "tt_response_rx" }, 929 { "tt_response_rx" },
930 { "tt_roam_adv_tx" }, 930 { "tt_roam_adv_tx" },
931 { "tt_roam_adv_rx" }, 931 { "tt_roam_adv_rx" },
932 #ifdef CONFIG_BATMAN_ADV_MCAST 932 #ifdef CONFIG_BATMAN_ADV_MCAST
933 { "mcast_tx" }, 933 { "mcast_tx" },
934 { "mcast_tx_bytes" }, 934 { "mcast_tx_bytes" },
935 { "mcast_tx_local" }, 935 { "mcast_tx_local" },
936 { "mcast_tx_local_bytes" }, 936 { "mcast_tx_local_bytes" },
937 { "mcast_rx" }, 937 { "mcast_rx" },
938 { "mcast_rx_bytes" }, 938 { "mcast_rx_bytes" },
939 { "mcast_rx_local" }, 939 { "mcast_rx_local" },
940 { "mcast_rx_local_bytes" }, 940 { "mcast_rx_local_bytes" },
941 { "mcast_fwd" }, 941 { "mcast_fwd" },
942 { "mcast_fwd_bytes" }, 942 { "mcast_fwd_bytes" },
943 #endif 943 #endif
944 #ifdef CONFIG_BATMAN_ADV_DAT 944 #ifdef CONFIG_BATMAN_ADV_DAT
945 { "dat_get_tx" }, 945 { "dat_get_tx" },
946 { "dat_get_rx" }, 946 { "dat_get_rx" },
947 { "dat_put_tx" }, 947 { "dat_put_tx" },
948 { "dat_put_rx" }, 948 { "dat_put_rx" },
949 { "dat_cached_reply_tx" }, 949 { "dat_cached_reply_tx" },
950 #endif 950 #endif
951 #ifdef CONFIG_BATMAN_ADV_NC 951 #ifdef CONFIG_BATMAN_ADV_NC
952 { "nc_code" }, 952 { "nc_code" },
953 { "nc_code_bytes" }, 953 { "nc_code_bytes" },
954 { "nc_recode" }, 954 { "nc_recode" },
955 { "nc_recode_bytes" }, 955 { "nc_recode_bytes" },
956 { "nc_buffer" }, 956 { "nc_buffer" },
957 { "nc_decode" }, 957 { "nc_decode" },
958 { "nc_decode_bytes" }, 958 { "nc_decode_bytes" },
959 { "nc_decode_failed" }, 959 { "nc_decode_failed" },
960 { "nc_sniffed" }, 960 { "nc_sniffed" },
961 #endif 961 #endif
962 }; 962 };
963 963
964 static void batadv_get_strings(struct net_devi 964 static void batadv_get_strings(struct net_device *dev, u32 stringset, u8 *data)
965 { 965 {
966 if (stringset == ETH_SS_STATS) 966 if (stringset == ETH_SS_STATS)
967 memcpy(data, batadv_counters_s 967 memcpy(data, batadv_counters_strings,
968 sizeof(batadv_counters_ 968 sizeof(batadv_counters_strings));
969 } 969 }
970 970
971 static void batadv_get_ethtool_stats(struct ne 971 static void batadv_get_ethtool_stats(struct net_device *dev,
972 struct et 972 struct ethtool_stats *stats, u64 *data)
973 { 973 {
974 struct batadv_priv *bat_priv = netdev_ 974 struct batadv_priv *bat_priv = netdev_priv(dev);
975 int i; 975 int i;
976 976
977 for (i = 0; i < BATADV_CNT_NUM; i++) 977 for (i = 0; i < BATADV_CNT_NUM; i++)
978 data[i] = batadv_sum_counter(b 978 data[i] = batadv_sum_counter(bat_priv, i);
979 } 979 }
980 980
981 static int batadv_get_sset_count(struct net_de 981 static int batadv_get_sset_count(struct net_device *dev, int stringset)
982 { 982 {
983 if (stringset == ETH_SS_STATS) 983 if (stringset == ETH_SS_STATS)
984 return BATADV_CNT_NUM; 984 return BATADV_CNT_NUM;
985 985
986 return -EOPNOTSUPP; 986 return -EOPNOTSUPP;
987 } 987 }
988 988
989 static const struct ethtool_ops batadv_ethtool 989 static const struct ethtool_ops batadv_ethtool_ops = {
990 .get_drvinfo = batadv_get_drvinfo, 990 .get_drvinfo = batadv_get_drvinfo,
991 .get_link = ethtool_op_get_link, 991 .get_link = ethtool_op_get_link,
992 .get_strings = batadv_get_strings, 992 .get_strings = batadv_get_strings,
993 .get_ethtool_stats = batadv_get_ethtoo 993 .get_ethtool_stats = batadv_get_ethtool_stats,
994 .get_sset_count = batadv_get_sset_coun 994 .get_sset_count = batadv_get_sset_count,
995 }; 995 };
996 996
997 /** 997 /**
998 * batadv_softif_free() - Deconstructor of bat 998 * batadv_softif_free() - Deconstructor of batadv_soft_interface
999 * @dev: Device to cleanup and remove 999 * @dev: Device to cleanup and remove
1000 */ 1000 */
1001 static void batadv_softif_free(struct net_dev 1001 static void batadv_softif_free(struct net_device *dev)
1002 { 1002 {
1003 batadv_mesh_free(dev); 1003 batadv_mesh_free(dev);
1004 1004
1005 /* some scheduled RCU callbacks need 1005 /* some scheduled RCU callbacks need the bat_priv struct to accomplish
1006 * their tasks. Wait for them all to 1006 * their tasks. Wait for them all to be finished before freeing the
1007 * netdev and its private data (bat_p 1007 * netdev and its private data (bat_priv)
1008 */ 1008 */
1009 rcu_barrier(); 1009 rcu_barrier();
1010 } 1010 }
1011 1011
1012 /** 1012 /**
1013 * batadv_softif_init_early() - early stage i 1013 * batadv_softif_init_early() - early stage initialization of soft interface
1014 * @dev: registered network device to modify 1014 * @dev: registered network device to modify
1015 */ 1015 */
1016 static void batadv_softif_init_early(struct n 1016 static void batadv_softif_init_early(struct net_device *dev)
1017 { 1017 {
1018 ether_setup(dev); 1018 ether_setup(dev);
1019 1019
1020 dev->netdev_ops = &batadv_netdev_ops; 1020 dev->netdev_ops = &batadv_netdev_ops;
1021 dev->needs_free_netdev = true; 1021 dev->needs_free_netdev = true;
1022 dev->priv_destructor = batadv_softif_ 1022 dev->priv_destructor = batadv_softif_free;
1023 dev->features |= NETIF_F_HW_VLAN_CTAG 1023 dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1024 dev->priv_flags |= IFF_NO_QUEUE; 1024 dev->priv_flags |= IFF_NO_QUEUE;
1025 dev->lltx = true; 1025 dev->lltx = true;
1026 dev->netns_local = true; 1026 dev->netns_local = true;
1027 1027
1028 /* can't call min_mtu, because the ne 1028 /* can't call min_mtu, because the needed variables
1029 * have not been initialized yet 1029 * have not been initialized yet
1030 */ 1030 */
1031 dev->mtu = ETH_DATA_LEN; 1031 dev->mtu = ETH_DATA_LEN;
1032 1032
1033 /* generate random address */ 1033 /* generate random address */
1034 eth_hw_addr_random(dev); 1034 eth_hw_addr_random(dev);
1035 1035
1036 dev->ethtool_ops = &batadv_ethtool_op 1036 dev->ethtool_ops = &batadv_ethtool_ops;
1037 } 1037 }
1038 1038
1039 /** 1039 /**
1040 * batadv_softif_validate() - validate config 1040 * batadv_softif_validate() - validate configuration of new batadv link
1041 * @tb: IFLA_INFO_DATA netlink attributes 1041 * @tb: IFLA_INFO_DATA netlink attributes
1042 * @data: enum batadv_ifla_attrs attributes 1042 * @data: enum batadv_ifla_attrs attributes
1043 * @extack: extended ACK report struct 1043 * @extack: extended ACK report struct
1044 * 1044 *
1045 * Return: 0 if successful or error otherwise 1045 * Return: 0 if successful or error otherwise.
1046 */ 1046 */
1047 static int batadv_softif_validate(struct nlat 1047 static int batadv_softif_validate(struct nlattr *tb[], struct nlattr *data[],
1048 struct netl 1048 struct netlink_ext_ack *extack)
1049 { 1049 {
1050 struct batadv_algo_ops *algo_ops; 1050 struct batadv_algo_ops *algo_ops;
1051 1051
1052 if (!data) 1052 if (!data)
1053 return 0; 1053 return 0;
1054 1054
1055 if (data[IFLA_BATADV_ALGO_NAME]) { 1055 if (data[IFLA_BATADV_ALGO_NAME]) {
1056 algo_ops = batadv_algo_get(nl 1056 algo_ops = batadv_algo_get(nla_data(data[IFLA_BATADV_ALGO_NAME]));
1057 if (!algo_ops) 1057 if (!algo_ops)
1058 return -EINVAL; 1058 return -EINVAL;
1059 } 1059 }
1060 1060
1061 return 0; 1061 return 0;
1062 } 1062 }
1063 1063
1064 /** 1064 /**
1065 * batadv_softif_newlink() - pre-initialize a 1065 * batadv_softif_newlink() - pre-initialize and register new batadv link
1066 * @src_net: the applicable net namespace 1066 * @src_net: the applicable net namespace
1067 * @dev: network device to register 1067 * @dev: network device to register
1068 * @tb: IFLA_INFO_DATA netlink attributes 1068 * @tb: IFLA_INFO_DATA netlink attributes
1069 * @data: enum batadv_ifla_attrs attributes 1069 * @data: enum batadv_ifla_attrs attributes
1070 * @extack: extended ACK report struct 1070 * @extack: extended ACK report struct
1071 * 1071 *
1072 * Return: 0 if successful or error otherwise 1072 * Return: 0 if successful or error otherwise.
1073 */ 1073 */
1074 static int batadv_softif_newlink(struct net * 1074 static int batadv_softif_newlink(struct net *src_net, struct net_device *dev,
1075 struct nlatt 1075 struct nlattr *tb[], struct nlattr *data[],
1076 struct netli 1076 struct netlink_ext_ack *extack)
1077 { 1077 {
1078 struct batadv_priv *bat_priv = netdev 1078 struct batadv_priv *bat_priv = netdev_priv(dev);
1079 const char *algo_name; 1079 const char *algo_name;
1080 int err; 1080 int err;
1081 1081
1082 if (data && data[IFLA_BATADV_ALGO_NAM 1082 if (data && data[IFLA_BATADV_ALGO_NAME]) {
1083 algo_name = nla_data(data[IFL 1083 algo_name = nla_data(data[IFLA_BATADV_ALGO_NAME]);
1084 err = batadv_algo_select(bat_ 1084 err = batadv_algo_select(bat_priv, algo_name);
1085 if (err) 1085 if (err)
1086 return -EINVAL; 1086 return -EINVAL;
1087 } 1087 }
1088 1088
1089 return register_netdevice(dev); 1089 return register_netdevice(dev);
1090 } 1090 }
1091 1091
1092 /** 1092 /**
1093 * batadv_softif_destroy_netlink() - deletion 1093 * batadv_softif_destroy_netlink() - deletion of batadv_soft_interface via
1094 * netlink 1094 * netlink
1095 * @soft_iface: the to-be-removed batman-adv 1095 * @soft_iface: the to-be-removed batman-adv interface
1096 * @head: list pointer 1096 * @head: list pointer
1097 */ 1097 */
1098 static void batadv_softif_destroy_netlink(str 1098 static void batadv_softif_destroy_netlink(struct net_device *soft_iface,
1099 str 1099 struct list_head *head)
1100 { 1100 {
1101 struct batadv_priv *bat_priv = netdev 1101 struct batadv_priv *bat_priv = netdev_priv(soft_iface);
1102 struct batadv_hard_iface *hard_iface; 1102 struct batadv_hard_iface *hard_iface;
1103 struct batadv_softif_vlan *vlan; 1103 struct batadv_softif_vlan *vlan;
1104 1104
1105 list_for_each_entry(hard_iface, &bata 1105 list_for_each_entry(hard_iface, &batadv_hardif_list, list) {
1106 if (hard_iface->soft_iface == 1106 if (hard_iface->soft_iface == soft_iface)
1107 batadv_hardif_disable 1107 batadv_hardif_disable_interface(hard_iface);
1108 } 1108 }
1109 1109
1110 /* destroy the "untagged" VLAN */ 1110 /* destroy the "untagged" VLAN */
1111 vlan = batadv_softif_vlan_get(bat_pri 1111 vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS);
1112 if (vlan) { 1112 if (vlan) {
1113 batadv_softif_destroy_vlan(ba 1113 batadv_softif_destroy_vlan(bat_priv, vlan);
1114 batadv_softif_vlan_put(vlan); 1114 batadv_softif_vlan_put(vlan);
1115 } 1115 }
1116 1116
1117 unregister_netdevice_queue(soft_iface 1117 unregister_netdevice_queue(soft_iface, head);
1118 } 1118 }
1119 1119
1120 /** 1120 /**
1121 * batadv_softif_is_valid() - Check whether d 1121 * batadv_softif_is_valid() - Check whether device is a batadv soft interface
1122 * @net_dev: device which should be checked 1122 * @net_dev: device which should be checked
1123 * 1123 *
1124 * Return: true when net_dev is a batman-adv 1124 * Return: true when net_dev is a batman-adv interface, false otherwise
1125 */ 1125 */
1126 bool batadv_softif_is_valid(const struct net_ 1126 bool batadv_softif_is_valid(const struct net_device *net_dev)
1127 { 1127 {
1128 if (net_dev->netdev_ops->ndo_start_xm 1128 if (net_dev->netdev_ops->ndo_start_xmit == batadv_interface_tx)
1129 return true; 1129 return true;
1130 1130
1131 return false; 1131 return false;
1132 } 1132 }
1133 1133
1134 static const struct nla_policy batadv_ifla_po 1134 static const struct nla_policy batadv_ifla_policy[IFLA_BATADV_MAX + 1] = {
1135 [IFLA_BATADV_ALGO_NAME] = { .type = N 1135 [IFLA_BATADV_ALGO_NAME] = { .type = NLA_NUL_STRING },
1136 }; 1136 };
1137 1137
1138 struct rtnl_link_ops batadv_link_ops __read_m 1138 struct rtnl_link_ops batadv_link_ops __read_mostly = {
1139 .kind = "batadv", 1139 .kind = "batadv",
1140 .priv_size = sizeof(struct batad 1140 .priv_size = sizeof(struct batadv_priv),
1141 .setup = batadv_softif_init_ 1141 .setup = batadv_softif_init_early,
1142 .maxtype = IFLA_BATADV_MAX, 1142 .maxtype = IFLA_BATADV_MAX,
1143 .policy = batadv_ifla_policy, 1143 .policy = batadv_ifla_policy,
1144 .validate = batadv_softif_valid 1144 .validate = batadv_softif_validate,
1145 .newlink = batadv_softif_newli 1145 .newlink = batadv_softif_newlink,
1146 .dellink = batadv_softif_destr 1146 .dellink = batadv_softif_destroy_netlink,
1147 }; 1147 };
1148 1148
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