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