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) 2007-2018 B.A.T.M.A.N. contributors:
3 * 3 *
4 * Marek Lindner, Simon Wunderlich 4 * Marek Lindner, Simon Wunderlich
>> 5 *
>> 6 * This program is free software; you can redistribute it and/or
>> 7 * modify it under the terms of version 2 of the GNU General Public
>> 8 * License as published by the Free Software Foundation.
>> 9 *
>> 10 * This program is distributed in the hope that it will be useful, but
>> 11 * WITHOUT ANY WARRANTY; without even the implied warranty of
>> 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
>> 13 * General Public License for more details.
>> 14 *
>> 15 * You should have received a copy of the GNU General Public License
>> 16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
5 */ 17 */
6 18
7 #include "soft-interface.h" 19 #include "soft-interface.h"
8 #include "main.h" 20 #include "main.h"
9 21
10 #include <linux/atomic.h> 22 #include <linux/atomic.h>
11 #include <linux/byteorder/generic.h> 23 #include <linux/byteorder/generic.h>
12 #include <linux/cache.h> 24 #include <linux/cache.h>
13 #include <linux/compiler.h> 25 #include <linux/compiler.h>
14 #include <linux/container_of.h> <<
15 #include <linux/cpumask.h> 26 #include <linux/cpumask.h>
16 #include <linux/errno.h> 27 #include <linux/errno.h>
17 #include <linux/etherdevice.h> 28 #include <linux/etherdevice.h>
18 #include <linux/ethtool.h> 29 #include <linux/ethtool.h>
19 #include <linux/gfp.h> 30 #include <linux/gfp.h>
20 #include <linux/if_ether.h> 31 #include <linux/if_ether.h>
21 #include <linux/if_vlan.h> 32 #include <linux/if_vlan.h>
22 #include <linux/jiffies.h> 33 #include <linux/jiffies.h>
>> 34 #include <linux/kernel.h>
23 #include <linux/kref.h> 35 #include <linux/kref.h>
24 #include <linux/list.h> 36 #include <linux/list.h>
25 #include <linux/lockdep.h> 37 #include <linux/lockdep.h>
26 #include <linux/netdevice.h> 38 #include <linux/netdevice.h>
27 #include <linux/netlink.h> <<
28 #include <linux/percpu.h> 39 #include <linux/percpu.h>
>> 40 #include <linux/printk.h>
29 #include <linux/random.h> 41 #include <linux/random.h>
30 #include <linux/rculist.h> 42 #include <linux/rculist.h>
31 #include <linux/rcupdate.h> 43 #include <linux/rcupdate.h>
>> 44 #include <linux/rtnetlink.h>
32 #include <linux/skbuff.h> 45 #include <linux/skbuff.h>
33 #include <linux/slab.h> 46 #include <linux/slab.h>
34 #include <linux/socket.h> 47 #include <linux/socket.h>
35 #include <linux/spinlock.h> 48 #include <linux/spinlock.h>
36 #include <linux/stddef.h> 49 #include <linux/stddef.h>
37 #include <linux/string.h> 50 #include <linux/string.h>
38 #include <linux/types.h> 51 #include <linux/types.h>
39 #include <net/net_namespace.h> <<
40 #include <net/netlink.h> <<
41 #include <uapi/linux/batadv_packet.h> 52 #include <uapi/linux/batadv_packet.h>
42 #include <uapi/linux/batman_adv.h> <<
43 53
44 #include "bat_algo.h" 54 #include "bat_algo.h"
45 #include "bridge_loop_avoidance.h" 55 #include "bridge_loop_avoidance.h"
>> 56 #include "debugfs.h"
46 #include "distributed-arp-table.h" 57 #include "distributed-arp-table.h"
47 #include "gateway_client.h" 58 #include "gateway_client.h"
>> 59 #include "gateway_common.h"
48 #include "hard-interface.h" 60 #include "hard-interface.h"
49 #include "multicast.h" 61 #include "multicast.h"
50 #include "network-coding.h" 62 #include "network-coding.h"
>> 63 #include "originator.h"
51 #include "send.h" 64 #include "send.h"
>> 65 #include "sysfs.h"
52 #include "translation-table.h" 66 #include "translation-table.h"
53 67
54 /** 68 /**
55 * batadv_skb_head_push() - Increase header si 69 * batadv_skb_head_push() - Increase header size and move (push) head pointer
56 * @skb: packet buffer which should be modifie 70 * @skb: packet buffer which should be modified
57 * @len: number of bytes to add 71 * @len: number of bytes to add
58 * 72 *
59 * Return: 0 on success or negative error numb 73 * Return: 0 on success or negative error number in case of failure
60 */ 74 */
61 int batadv_skb_head_push(struct sk_buff *skb, 75 int batadv_skb_head_push(struct sk_buff *skb, unsigned int len)
62 { 76 {
63 int result; 77 int result;
64 78
65 /* TODO: We must check if we can relea 79 /* TODO: We must check if we can release all references to non-payload
66 * data using __skb_header_release in 80 * data using __skb_header_release in our skbs to allow skb_cow_header
67 * to work optimally. This means that 81 * to work optimally. This means that those skbs are not allowed to read
68 * or write any data which is before t 82 * or write any data which is before the current position of skb->data
69 * after that call and thus allow othe 83 * after that call and thus allow other skbs with the same data buffer
70 * to write freely in that area. 84 * to write freely in that area.
71 */ 85 */
72 result = skb_cow_head(skb, len); 86 result = skb_cow_head(skb, len);
73 if (result < 0) 87 if (result < 0)
74 return result; 88 return result;
75 89
76 skb_push(skb, len); 90 skb_push(skb, len);
77 return 0; 91 return 0;
78 } 92 }
79 93
80 static int batadv_interface_open(struct net_de 94 static int batadv_interface_open(struct net_device *dev)
81 { 95 {
82 netif_start_queue(dev); 96 netif_start_queue(dev);
83 return 0; 97 return 0;
84 } 98 }
85 99
86 static int batadv_interface_release(struct net 100 static int batadv_interface_release(struct net_device *dev)
87 { 101 {
88 netif_stop_queue(dev); 102 netif_stop_queue(dev);
89 return 0; 103 return 0;
90 } 104 }
91 105
92 /** 106 /**
93 * batadv_sum_counter() - Sum the cpu-local co 107 * batadv_sum_counter() - Sum the cpu-local counters for index 'idx'
94 * @bat_priv: the bat priv with all the soft i 108 * @bat_priv: the bat priv with all the soft interface information
95 * @idx: index of counter to sum up 109 * @idx: index of counter to sum up
96 * 110 *
97 * Return: sum of all cpu-local counters 111 * Return: sum of all cpu-local counters
98 */ 112 */
99 static u64 batadv_sum_counter(struct batadv_pr 113 static u64 batadv_sum_counter(struct batadv_priv *bat_priv, size_t idx)
100 { 114 {
101 u64 *counters, sum = 0; 115 u64 *counters, sum = 0;
102 int cpu; 116 int cpu;
103 117
104 for_each_possible_cpu(cpu) { 118 for_each_possible_cpu(cpu) {
105 counters = per_cpu_ptr(bat_pri 119 counters = per_cpu_ptr(bat_priv->bat_counters, cpu);
106 sum += counters[idx]; 120 sum += counters[idx];
107 } 121 }
108 122
109 return sum; 123 return sum;
110 } 124 }
111 125
112 static struct net_device_stats *batadv_interfa 126 static struct net_device_stats *batadv_interface_stats(struct net_device *dev)
113 { 127 {
114 struct batadv_priv *bat_priv = netdev_ 128 struct batadv_priv *bat_priv = netdev_priv(dev);
115 struct net_device_stats *stats = &dev- 129 struct net_device_stats *stats = &dev->stats;
116 130
117 stats->tx_packets = batadv_sum_counter 131 stats->tx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_TX);
118 stats->tx_bytes = batadv_sum_counter(b 132 stats->tx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_TX_BYTES);
119 stats->tx_dropped = batadv_sum_counter 133 stats->tx_dropped = batadv_sum_counter(bat_priv, BATADV_CNT_TX_DROPPED);
120 stats->rx_packets = batadv_sum_counter 134 stats->rx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_RX);
121 stats->rx_bytes = batadv_sum_counter(b 135 stats->rx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_RX_BYTES);
122 return stats; 136 return stats;
123 } 137 }
124 138
125 static int batadv_interface_set_mac_addr(struc 139 static int batadv_interface_set_mac_addr(struct net_device *dev, void *p)
126 { 140 {
127 struct batadv_priv *bat_priv = netdev_ 141 struct batadv_priv *bat_priv = netdev_priv(dev);
128 struct batadv_softif_vlan *vlan; 142 struct batadv_softif_vlan *vlan;
129 struct sockaddr *addr = p; 143 struct sockaddr *addr = p;
130 u8 old_addr[ETH_ALEN]; 144 u8 old_addr[ETH_ALEN];
131 145
132 if (!is_valid_ether_addr(addr->sa_data 146 if (!is_valid_ether_addr(addr->sa_data))
133 return -EADDRNOTAVAIL; 147 return -EADDRNOTAVAIL;
134 148
135 ether_addr_copy(old_addr, dev->dev_add 149 ether_addr_copy(old_addr, dev->dev_addr);
136 eth_hw_addr_set(dev, addr->sa_data); !! 150 ether_addr_copy(dev->dev_addr, addr->sa_data);
137 151
138 /* only modify transtable if it has be 152 /* only modify transtable if it has been initialized before */
139 if (atomic_read(&bat_priv->mesh_state) 153 if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
140 return 0; 154 return 0;
141 155
142 rcu_read_lock(); 156 rcu_read_lock();
143 hlist_for_each_entry_rcu(vlan, &bat_pr 157 hlist_for_each_entry_rcu(vlan, &bat_priv->softif_vlan_list, list) {
144 batadv_tt_local_remove(bat_pri 158 batadv_tt_local_remove(bat_priv, old_addr, vlan->vid,
145 "mac ad 159 "mac address changed", false);
146 batadv_tt_local_add(dev, addr- 160 batadv_tt_local_add(dev, addr->sa_data, vlan->vid,
147 BATADV_NUL 161 BATADV_NULL_IFINDEX, BATADV_NO_MARK);
148 } 162 }
149 rcu_read_unlock(); 163 rcu_read_unlock();
150 164
151 return 0; 165 return 0;
152 } 166 }
153 167
154 static int batadv_interface_change_mtu(struct 168 static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu)
155 { 169 {
156 struct batadv_priv *bat_priv = netdev_ 170 struct batadv_priv *bat_priv = netdev_priv(dev);
157 171
158 /* check ranges */ 172 /* check ranges */
159 if (new_mtu < ETH_MIN_MTU || new_mtu > !! 173 if (new_mtu < 68 || new_mtu > batadv_hardif_min_mtu(dev))
160 return -EINVAL; 174 return -EINVAL;
161 175
162 WRITE_ONCE(dev->mtu, new_mtu); !! 176 dev->mtu = new_mtu;
163 bat_priv->mtu_set_by_user = new_mtu; 177 bat_priv->mtu_set_by_user = new_mtu;
164 178
165 return 0; 179 return 0;
166 } 180 }
167 181
168 /** 182 /**
169 * batadv_interface_set_rx_mode() - set the rx 183 * batadv_interface_set_rx_mode() - set the rx mode of a device
170 * @dev: registered network device to modify 184 * @dev: registered network device to modify
171 * 185 *
172 * We do not actually need to set any rx filte 186 * We do not actually need to set any rx filters for the virtual batman
173 * soft interface. However a dummy handler ena 187 * soft interface. However a dummy handler enables a user to set static
174 * multicast listeners for instance. 188 * multicast listeners for instance.
175 */ 189 */
176 static void batadv_interface_set_rx_mode(struc 190 static void batadv_interface_set_rx_mode(struct net_device *dev)
177 { 191 {
178 } 192 }
179 193
180 static netdev_tx_t batadv_interface_tx(struct 194 static netdev_tx_t batadv_interface_tx(struct sk_buff *skb,
181 struct 195 struct net_device *soft_iface)
182 { 196 {
183 struct ethhdr *ethhdr; 197 struct ethhdr *ethhdr;
184 struct batadv_priv *bat_priv = netdev_ 198 struct batadv_priv *bat_priv = netdev_priv(soft_iface);
185 struct batadv_hard_iface *primary_if = 199 struct batadv_hard_iface *primary_if = NULL;
186 struct batadv_bcast_packet *bcast_pack 200 struct batadv_bcast_packet *bcast_packet;
187 static const u8 stp_addr[ETH_ALEN] = { 201 static const u8 stp_addr[ETH_ALEN] = {0x01, 0x80, 0xC2, 0x00,
188 202 0x00, 0x00};
189 static const u8 ectp_addr[ETH_ALEN] = 203 static const u8 ectp_addr[ETH_ALEN] = {0xCF, 0x00, 0x00, 0x00,
190 204 0x00, 0x00};
191 enum batadv_dhcp_recipient dhcp_rcp = 205 enum batadv_dhcp_recipient dhcp_rcp = BATADV_DHCP_NO;
192 u8 *dst_hint = NULL, chaddr[ETH_ALEN]; 206 u8 *dst_hint = NULL, chaddr[ETH_ALEN];
193 struct vlan_ethhdr *vhdr; 207 struct vlan_ethhdr *vhdr;
194 unsigned int header_len = 0; 208 unsigned int header_len = 0;
195 int data_len = skb->len, ret; 209 int data_len = skb->len, ret;
196 unsigned long brd_delay = 0; !! 210 unsigned long brd_delay = 1;
197 bool do_bcast = false, client_added; 211 bool do_bcast = false, client_added;
198 unsigned short vid; 212 unsigned short vid;
199 u32 seqno; 213 u32 seqno;
200 int gw_mode; 214 int gw_mode;
201 enum batadv_forw_mode forw_mode = BATA !! 215 enum batadv_forw_mode forw_mode;
202 int mcast_is_routable = 0; !! 216 struct batadv_orig_node *mcast_single_orig = NULL;
203 int network_offset = ETH_HLEN; 217 int network_offset = ETH_HLEN;
204 __be16 proto; <<
205 218
206 if (atomic_read(&bat_priv->mesh_state) 219 if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
207 goto dropped; 220 goto dropped;
208 221
209 /* reset control block to avoid left o 222 /* reset control block to avoid left overs from previous users */
210 memset(skb->cb, 0, sizeof(struct batad 223 memset(skb->cb, 0, sizeof(struct batadv_skb_cb));
211 224
212 netif_trans_update(soft_iface); 225 netif_trans_update(soft_iface);
213 vid = batadv_get_vid(skb, 0); 226 vid = batadv_get_vid(skb, 0);
214 227
215 skb_reset_mac_header(skb); 228 skb_reset_mac_header(skb);
216 ethhdr = eth_hdr(skb); 229 ethhdr = eth_hdr(skb);
217 230
218 proto = ethhdr->h_proto; !! 231 switch (ntohs(ethhdr->h_proto)) {
219 <<
220 switch (ntohs(proto)) { <<
221 case ETH_P_8021Q: 232 case ETH_P_8021Q:
222 if (!pskb_may_pull(skb, sizeof 233 if (!pskb_may_pull(skb, sizeof(*vhdr)))
223 goto dropped; 234 goto dropped;
224 vhdr = vlan_eth_hdr(skb); 235 vhdr = vlan_eth_hdr(skb);
225 proto = vhdr->h_vlan_encapsula <<
226 236
227 /* drop batman-in-batman packe 237 /* drop batman-in-batman packets to prevent loops */
228 if (proto != htons(ETH_P_BATMA !! 238 if (vhdr->h_vlan_encapsulated_proto != htons(ETH_P_BATMAN)) {
229 network_offset += VLAN 239 network_offset += VLAN_HLEN;
230 break; 240 break;
231 } 241 }
232 242
233 fallthrough; !! 243 /* fall through */
234 case ETH_P_BATMAN: 244 case ETH_P_BATMAN:
235 goto dropped; 245 goto dropped;
236 } 246 }
237 247
238 skb_set_network_header(skb, network_of 248 skb_set_network_header(skb, network_offset);
239 249
240 if (batadv_bla_tx(bat_priv, skb, vid)) 250 if (batadv_bla_tx(bat_priv, skb, vid))
241 goto dropped; 251 goto dropped;
242 252
243 /* skb->data might have been reallocat 253 /* skb->data might have been reallocated by batadv_bla_tx() */
244 ethhdr = eth_hdr(skb); 254 ethhdr = eth_hdr(skb);
245 255
246 /* Register the client MAC in the tran 256 /* Register the client MAC in the transtable */
247 if (!is_multicast_ether_addr(ethhdr->h 257 if (!is_multicast_ether_addr(ethhdr->h_source) &&
248 !batadv_bla_is_loopdetect_mac(ethh 258 !batadv_bla_is_loopdetect_mac(ethhdr->h_source)) {
249 client_added = batadv_tt_local 259 client_added = batadv_tt_local_add(soft_iface, ethhdr->h_source,
250 260 vid, skb->skb_iif,
251 261 skb->mark);
252 if (!client_added) 262 if (!client_added)
253 goto dropped; 263 goto dropped;
254 } 264 }
255 265
256 /* Snoop address candidates from DHCPA <<
257 batadv_dat_snoop_outgoing_dhcp_ack(bat <<
258 <<
259 /* don't accept stp packets. STP does 266 /* don't accept stp packets. STP does not help in meshes.
260 * better use the bridge loop avoidanc 267 * better use the bridge loop avoidance ...
261 * 268 *
262 * The same goes for ECTP sent at leas 269 * The same goes for ECTP sent at least by some Cisco Switches,
263 * it might confuse the mesh when used 270 * it might confuse the mesh when used with bridge loop avoidance.
264 */ 271 */
265 if (batadv_compare_eth(ethhdr->h_dest, 272 if (batadv_compare_eth(ethhdr->h_dest, stp_addr))
266 goto dropped; 273 goto dropped;
267 274
268 if (batadv_compare_eth(ethhdr->h_dest, 275 if (batadv_compare_eth(ethhdr->h_dest, ectp_addr))
269 goto dropped; 276 goto dropped;
270 277
271 gw_mode = atomic_read(&bat_priv->gw.mo 278 gw_mode = atomic_read(&bat_priv->gw.mode);
272 if (is_multicast_ether_addr(ethhdr->h_ 279 if (is_multicast_ether_addr(ethhdr->h_dest)) {
273 /* if gw mode is off, broadcas 280 /* if gw mode is off, broadcast every packet */
274 if (gw_mode == BATADV_GW_MODE_ 281 if (gw_mode == BATADV_GW_MODE_OFF) {
275 do_bcast = true; 282 do_bcast = true;
276 goto send; 283 goto send;
277 } 284 }
278 285
279 dhcp_rcp = batadv_gw_dhcp_reci 286 dhcp_rcp = batadv_gw_dhcp_recipient_get(skb, &header_len,
280 287 chaddr);
281 /* skb->data may have been mod 288 /* skb->data may have been modified by
282 * batadv_gw_dhcp_recipient_ge 289 * batadv_gw_dhcp_recipient_get()
283 */ 290 */
284 ethhdr = eth_hdr(skb); 291 ethhdr = eth_hdr(skb);
285 /* if gw_mode is on, broadcast 292 /* if gw_mode is on, broadcast any non-DHCP message.
286 * All the DHCP packets are go 293 * All the DHCP packets are going to be sent as unicast
287 */ 294 */
288 if (dhcp_rcp == BATADV_DHCP_NO 295 if (dhcp_rcp == BATADV_DHCP_NO) {
289 do_bcast = true; 296 do_bcast = true;
290 goto send; 297 goto send;
291 } 298 }
292 299
293 if (dhcp_rcp == BATADV_DHCP_TO 300 if (dhcp_rcp == BATADV_DHCP_TO_CLIENT)
294 dst_hint = chaddr; 301 dst_hint = chaddr;
295 else if ((gw_mode == BATADV_GW 302 else if ((gw_mode == BATADV_GW_MODE_SERVER) &&
296 (dhcp_rcp == BATADV_D 303 (dhcp_rcp == BATADV_DHCP_TO_SERVER))
297 /* gateways should not 304 /* gateways should not forward any DHCP message if
298 * directed to a DHCP 305 * directed to a DHCP server
299 */ 306 */
300 goto dropped; 307 goto dropped;
301 308
302 send: 309 send:
303 if (do_bcast && !is_broadcast_ 310 if (do_bcast && !is_broadcast_ether_addr(ethhdr->h_dest)) {
304 forw_mode = batadv_mca !! 311 forw_mode = batadv_mcast_forw_mode(bat_priv, skb,
305 !! 312 &mcast_single_orig);
306 switch (forw_mode) { !! 313 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; 314 goto dropped;
317 } !! 315
>> 316 if (forw_mode == BATADV_FORW_SINGLE)
>> 317 do_bcast = false;
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;
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_add_bcast_packet_to_list(bat_priv, skb, brd_delay, true);
>> 358
>> 359 /* a copy is stored in the bcast list, therefore removing
>> 360 * the original skb.
>> 361 */
>> 362 consume_skb(skb);
>> 363
358 /* unicast packet */ 364 /* unicast packet */
359 } else { 365 } else {
360 /* DHCP packets going to a ser 366 /* DHCP packets going to a server will use the GW feature */
361 if (dhcp_rcp == BATADV_DHCP_TO 367 if (dhcp_rcp == BATADV_DHCP_TO_SERVER) {
362 ret = batadv_gw_out_of 368 ret = batadv_gw_out_of_range(bat_priv, skb);
363 if (ret) 369 if (ret)
364 goto dropped; 370 goto dropped;
365 ret = batadv_send_skb_ 371 ret = batadv_send_skb_via_gw(bat_priv, skb, vid);
366 } else if (forw_mode == BATADV !! 372 } else if (mcast_single_orig) {
367 ret = batadv_mcast_for !! 373 ret = batadv_mcast_forw_send_orig(bat_priv, skb, vid,
368 !! 374 mcast_single_orig);
369 } else if (forw_mode == BATADV <<
370 ret = batadv_mcast_for <<
371 } else { 375 } else {
372 if (batadv_dat_snoop_o 376 if (batadv_dat_snoop_outgoing_arp_request(bat_priv,
373 377 skb))
374 goto dropped; 378 goto dropped;
375 379
376 batadv_dat_snoop_outgo 380 batadv_dat_snoop_outgoing_arp_reply(bat_priv, skb);
377 381
378 ret = batadv_send_skb_ 382 ret = batadv_send_skb_via_tt(bat_priv, skb, dst_hint,
379 383 vid);
380 } 384 }
381 if (ret != NET_XMIT_SUCCESS) 385 if (ret != NET_XMIT_SUCCESS)
382 goto dropped_freed; 386 goto dropped_freed;
383 } 387 }
384 388
385 batadv_inc_counter(bat_priv, BATADV_CN 389 batadv_inc_counter(bat_priv, BATADV_CNT_TX);
386 batadv_add_counter(bat_priv, BATADV_CN 390 batadv_add_counter(bat_priv, BATADV_CNT_TX_BYTES, data_len);
387 goto end; 391 goto end;
388 392
389 dropped: 393 dropped:
390 kfree_skb(skb); 394 kfree_skb(skb);
391 dropped_freed: 395 dropped_freed:
392 batadv_inc_counter(bat_priv, BATADV_CN 396 batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED);
393 end: 397 end:
394 batadv_hardif_put(primary_if); !! 398 if (mcast_single_orig)
>> 399 batadv_orig_node_put(mcast_single_orig);
>> 400 if (primary_if)
>> 401 batadv_hardif_put(primary_if);
395 return NETDEV_TX_OK; 402 return NETDEV_TX_OK;
396 } 403 }
397 404
398 /** 405 /**
399 * batadv_interface_rx() - receive ethernet fr 406 * batadv_interface_rx() - receive ethernet frame on local batman-adv interface
400 * @soft_iface: local interface which will rec 407 * @soft_iface: local interface which will receive the ethernet frame
401 * @skb: ethernet frame for @soft_iface 408 * @skb: ethernet frame for @soft_iface
402 * @hdr_size: size of already parsed batman-ad 409 * @hdr_size: size of already parsed batman-adv header
403 * @orig_node: originator from which the batma 410 * @orig_node: originator from which the batman-adv packet was sent
404 * 411 *
405 * Sends an ethernet frame to the receive path !! 412 * Sends a ethernet frame to the receive path of the local @soft_iface.
406 * skb->data has still point to the batman-adv 413 * 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 414 * The caller has to have parsed this header already and made sure that at least
408 * @hdr_size bytes are still available for pul 415 * @hdr_size bytes are still available for pull in @skb.
409 * 416 *
410 * The packet may still get dropped. This can 417 * The packet may still get dropped. This can happen when the encapsulated
411 * ethernet frame is invalid or contains again 418 * ethernet frame is invalid or contains again an batman-adv packet. Also
412 * unicast packets will be dropped directly wh 419 * unicast packets will be dropped directly when it was sent between two
413 * isolated clients. 420 * isolated clients.
414 */ 421 */
415 void batadv_interface_rx(struct net_device *so 422 void batadv_interface_rx(struct net_device *soft_iface,
416 struct sk_buff *skb, 423 struct sk_buff *skb, int hdr_size,
417 struct batadv_orig_no 424 struct batadv_orig_node *orig_node)
418 { 425 {
419 struct batadv_bcast_packet *batadv_bca 426 struct batadv_bcast_packet *batadv_bcast_packet;
420 struct batadv_priv *bat_priv = netdev_ 427 struct batadv_priv *bat_priv = netdev_priv(soft_iface);
421 struct vlan_ethhdr *vhdr; 428 struct vlan_ethhdr *vhdr;
422 struct ethhdr *ethhdr; 429 struct ethhdr *ethhdr;
423 unsigned short vid; 430 unsigned short vid;
424 int packet_type; 431 int packet_type;
425 432
426 batadv_bcast_packet = (struct batadv_b 433 batadv_bcast_packet = (struct batadv_bcast_packet *)skb->data;
427 packet_type = batadv_bcast_packet->pac 434 packet_type = batadv_bcast_packet->packet_type;
428 435
429 skb_pull_rcsum(skb, hdr_size); 436 skb_pull_rcsum(skb, hdr_size);
430 skb_reset_mac_header(skb); 437 skb_reset_mac_header(skb);
431 438
432 /* clean the netfilter state now that 439 /* clean the netfilter state now that the batman-adv header has been
433 * removed 440 * removed
434 */ 441 */
435 nf_reset_ct(skb); !! 442 nf_reset(skb);
436 443
437 if (unlikely(!pskb_may_pull(skb, ETH_H 444 if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
438 goto dropped; 445 goto dropped;
439 446
440 vid = batadv_get_vid(skb, 0); 447 vid = batadv_get_vid(skb, 0);
441 ethhdr = eth_hdr(skb); 448 ethhdr = eth_hdr(skb);
442 449
443 switch (ntohs(ethhdr->h_proto)) { 450 switch (ntohs(ethhdr->h_proto)) {
444 case ETH_P_8021Q: 451 case ETH_P_8021Q:
445 if (!pskb_may_pull(skb, VLAN_E 452 if (!pskb_may_pull(skb, VLAN_ETH_HLEN))
446 goto dropped; 453 goto dropped;
447 454
448 vhdr = skb_vlan_eth_hdr(skb); !! 455 vhdr = (struct vlan_ethhdr *)skb->data;
449 456
450 /* drop batman-in-batman packe 457 /* drop batman-in-batman packets to prevent loops */
451 if (vhdr->h_vlan_encapsulated_ 458 if (vhdr->h_vlan_encapsulated_proto != htons(ETH_P_BATMAN))
452 break; 459 break;
453 460
454 fallthrough; !! 461 /* fall through */
455 case ETH_P_BATMAN: 462 case ETH_P_BATMAN:
456 goto dropped; 463 goto dropped;
457 } 464 }
458 465
459 /* skb->dev & skb->pkt_type are set he 466 /* skb->dev & skb->pkt_type are set here */
460 skb->protocol = eth_type_trans(skb, so 467 skb->protocol = eth_type_trans(skb, soft_iface);
461 skb_postpull_rcsum(skb, eth_hdr(skb), 468 skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
462 469
463 batadv_inc_counter(bat_priv, BATADV_CN 470 batadv_inc_counter(bat_priv, BATADV_CNT_RX);
464 batadv_add_counter(bat_priv, BATADV_CN 471 batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES,
465 skb->len + ETH_HLEN 472 skb->len + ETH_HLEN);
466 473
467 /* Let the bridge loop avoidance check 474 /* Let the bridge loop avoidance check the packet. If will
468 * not handle it, we can safely push i 475 * not handle it, we can safely push it up.
469 */ 476 */
470 if (batadv_bla_rx(bat_priv, skb, vid, 477 if (batadv_bla_rx(bat_priv, skb, vid, packet_type))
471 goto out; 478 goto out;
472 479
473 if (orig_node) 480 if (orig_node)
474 batadv_tt_add_temporary_global 481 batadv_tt_add_temporary_global_entry(bat_priv, orig_node,
475 482 ethhdr->h_source, vid);
476 483
477 if (is_multicast_ether_addr(ethhdr->h_ 484 if (is_multicast_ether_addr(ethhdr->h_dest)) {
478 /* set the mark on broadcast p 485 /* set the mark on broadcast packets if AP isolation is ON and
479 * the packet is coming from a 486 * the packet is coming from an "isolated" client
480 */ 487 */
481 if (batadv_vlan_ap_isola_get(b 488 if (batadv_vlan_ap_isola_get(bat_priv, vid) &&
482 batadv_tt_global_is_isolat 489 batadv_tt_global_is_isolated(bat_priv, ethhdr->h_source,
483 490 vid)) {
484 /* save bits in skb->m 491 /* save bits in skb->mark not covered by the mask and
485 * apply the mark on t 492 * apply the mark on the rest
486 */ 493 */
487 skb->mark &= ~bat_priv 494 skb->mark &= ~bat_priv->isolation_mark_mask;
488 skb->mark |= bat_priv- 495 skb->mark |= bat_priv->isolation_mark;
489 } 496 }
490 } else if (batadv_is_ap_isolated(bat_p 497 } else if (batadv_is_ap_isolated(bat_priv, ethhdr->h_source,
491 ethhd 498 ethhdr->h_dest, vid)) {
492 goto dropped; 499 goto dropped;
493 } 500 }
494 501
495 netif_rx(skb); 502 netif_rx(skb);
496 goto out; 503 goto out;
497 504
498 dropped: 505 dropped:
499 kfree_skb(skb); 506 kfree_skb(skb);
500 out: 507 out:
501 return; 508 return;
502 } 509 }
503 510
504 /** 511 /**
505 * batadv_softif_vlan_release() - release vlan 512 * batadv_softif_vlan_release() - release vlan from lists and queue for free
506 * after rcu grace period 513 * after rcu grace period
507 * @ref: kref pointer of the vlan object 514 * @ref: kref pointer of the vlan object
508 */ 515 */
509 void batadv_softif_vlan_release(struct kref *r !! 516 static void batadv_softif_vlan_release(struct kref *ref)
510 { 517 {
511 struct batadv_softif_vlan *vlan; 518 struct batadv_softif_vlan *vlan;
512 519
513 vlan = container_of(ref, struct batadv 520 vlan = container_of(ref, struct batadv_softif_vlan, refcount);
514 521
515 spin_lock_bh(&vlan->bat_priv->softif_v 522 spin_lock_bh(&vlan->bat_priv->softif_vlan_list_lock);
516 hlist_del_rcu(&vlan->list); 523 hlist_del_rcu(&vlan->list);
517 spin_unlock_bh(&vlan->bat_priv->softif 524 spin_unlock_bh(&vlan->bat_priv->softif_vlan_list_lock);
518 525
519 kfree_rcu(vlan, rcu); 526 kfree_rcu(vlan, rcu);
520 } 527 }
521 528
522 /** 529 /**
>> 530 * batadv_softif_vlan_put() - decrease the vlan object refcounter and
>> 531 * possibly release it
>> 532 * @vlan: the vlan object to release
>> 533 */
>> 534 void batadv_softif_vlan_put(struct batadv_softif_vlan *vlan)
>> 535 {
>> 536 if (!vlan)
>> 537 return;
>> 538
>> 539 kref_put(&vlan->refcount, batadv_softif_vlan_release);
>> 540 }
>> 541
>> 542 /**
523 * batadv_softif_vlan_get() - get the vlan obj 543 * batadv_softif_vlan_get() - get the vlan object for a specific vid
524 * @bat_priv: the bat priv with all the soft i 544 * @bat_priv: the bat priv with all the soft interface information
525 * @vid: the identifier of the vlan object to 545 * @vid: the identifier of the vlan object to retrieve
526 * 546 *
527 * Return: the private data of the vlan matchi 547 * Return: the private data of the vlan matching the vid passed as argument or
528 * NULL otherwise. The refcounter of the retur 548 * NULL otherwise. The refcounter of the returned object is incremented by 1.
529 */ 549 */
530 struct batadv_softif_vlan *batadv_softif_vlan_ 550 struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv,
531 551 unsigned short vid)
532 { 552 {
533 struct batadv_softif_vlan *vlan_tmp, * 553 struct batadv_softif_vlan *vlan_tmp, *vlan = NULL;
534 554
535 rcu_read_lock(); 555 rcu_read_lock();
536 hlist_for_each_entry_rcu(vlan_tmp, &ba 556 hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) {
537 if (vlan_tmp->vid != vid) 557 if (vlan_tmp->vid != vid)
538 continue; 558 continue;
539 559
540 if (!kref_get_unless_zero(&vla 560 if (!kref_get_unless_zero(&vlan_tmp->refcount))
541 continue; 561 continue;
542 562
543 vlan = vlan_tmp; 563 vlan = vlan_tmp;
544 break; 564 break;
545 } 565 }
546 rcu_read_unlock(); 566 rcu_read_unlock();
547 567
548 return vlan; 568 return vlan;
549 } 569 }
550 570
551 /** 571 /**
552 * batadv_softif_create_vlan() - allocate the 572 * batadv_softif_create_vlan() - allocate the needed resources for a new vlan
553 * @bat_priv: the bat priv with all the soft i 573 * @bat_priv: the bat priv with all the soft interface information
554 * @vid: the VLAN identifier 574 * @vid: the VLAN identifier
555 * 575 *
556 * Return: 0 on success, a negative error othe 576 * Return: 0 on success, a negative error otherwise.
557 */ 577 */
558 int batadv_softif_create_vlan(struct batadv_pr 578 int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid)
559 { 579 {
560 struct batadv_softif_vlan *vlan; 580 struct batadv_softif_vlan *vlan;
>> 581 int err;
561 582
562 spin_lock_bh(&bat_priv->softif_vlan_li 583 spin_lock_bh(&bat_priv->softif_vlan_list_lock);
563 584
564 vlan = batadv_softif_vlan_get(bat_priv 585 vlan = batadv_softif_vlan_get(bat_priv, vid);
565 if (vlan) { 586 if (vlan) {
566 batadv_softif_vlan_put(vlan); 587 batadv_softif_vlan_put(vlan);
567 spin_unlock_bh(&bat_priv->soft 588 spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
568 return -EEXIST; 589 return -EEXIST;
569 } 590 }
570 591
571 vlan = kzalloc(sizeof(*vlan), GFP_ATOM 592 vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC);
572 if (!vlan) { 593 if (!vlan) {
573 spin_unlock_bh(&bat_priv->soft 594 spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
574 return -ENOMEM; 595 return -ENOMEM;
575 } 596 }
576 597
577 vlan->bat_priv = bat_priv; 598 vlan->bat_priv = bat_priv;
578 vlan->vid = vid; 599 vlan->vid = vid;
579 kref_init(&vlan->refcount); 600 kref_init(&vlan->refcount);
580 601
581 atomic_set(&vlan->ap_isolation, 0); 602 atomic_set(&vlan->ap_isolation, 0);
582 603
583 kref_get(&vlan->refcount); 604 kref_get(&vlan->refcount);
584 hlist_add_head_rcu(&vlan->list, &bat_p 605 hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list);
585 spin_unlock_bh(&bat_priv->softif_vlan_ 606 spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
586 607
>> 608 /* batadv_sysfs_add_vlan cannot be in the spinlock section due to the
>> 609 * sleeping behavior of the sysfs functions and the fs_reclaim lock
>> 610 */
>> 611 err = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan);
>> 612 if (err) {
>> 613 /* ref for the function */
>> 614 batadv_softif_vlan_put(vlan);
>> 615
>> 616 /* ref for the list */
>> 617 batadv_softif_vlan_put(vlan);
>> 618 return err;
>> 619 }
>> 620
587 /* add a new TT local entry. This one 621 /* add a new TT local entry. This one will be marked with the NOPURGE
588 * flag 622 * flag
589 */ 623 */
590 batadv_tt_local_add(bat_priv->soft_ifa 624 batadv_tt_local_add(bat_priv->soft_iface,
591 bat_priv->soft_ifa 625 bat_priv->soft_iface->dev_addr, vid,
592 BATADV_NULL_IFINDE 626 BATADV_NULL_IFINDEX, BATADV_NO_MARK);
593 627
594 /* don't return reference to new softi 628 /* don't return reference to new softif_vlan */
595 batadv_softif_vlan_put(vlan); 629 batadv_softif_vlan_put(vlan);
596 630
597 return 0; 631 return 0;
598 } 632 }
599 633
600 /** 634 /**
601 * batadv_softif_destroy_vlan() - remove and d 635 * batadv_softif_destroy_vlan() - remove and destroy a softif_vlan object
602 * @bat_priv: the bat priv with all the soft i 636 * @bat_priv: the bat priv with all the soft interface information
603 * @vlan: the object to remove 637 * @vlan: the object to remove
604 */ 638 */
605 static void batadv_softif_destroy_vlan(struct 639 static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv,
606 struct 640 struct batadv_softif_vlan *vlan)
607 { 641 {
608 /* explicitly remove the associated TT 642 /* explicitly remove the associated TT local entry because it is marked
609 * with the NOPURGE flag 643 * with the NOPURGE flag
610 */ 644 */
611 batadv_tt_local_remove(bat_priv, bat_p 645 batadv_tt_local_remove(bat_priv, bat_priv->soft_iface->dev_addr,
612 vlan->vid, "vla 646 vlan->vid, "vlan interface destroyed", false);
613 647
>> 648 batadv_sysfs_del_vlan(bat_priv, vlan);
614 batadv_softif_vlan_put(vlan); 649 batadv_softif_vlan_put(vlan);
615 } 650 }
616 651
617 /** 652 /**
618 * batadv_interface_add_vid() - ndo_add_vid AP 653 * batadv_interface_add_vid() - ndo_add_vid API implementation
619 * @dev: the netdev of the mesh interface 654 * @dev: the netdev of the mesh interface
620 * @proto: protocol of the vlan id !! 655 * @proto: protocol of the the vlan id
621 * @vid: identifier of the new vlan 656 * @vid: identifier of the new vlan
622 * 657 *
623 * Set up all the internal structures for hand 658 * Set up all the internal structures for handling the new vlan on top of the
624 * mesh interface 659 * mesh interface
625 * 660 *
626 * Return: 0 on success or a negative error co 661 * Return: 0 on success or a negative error code in case of failure.
627 */ 662 */
628 static int batadv_interface_add_vid(struct net 663 static int batadv_interface_add_vid(struct net_device *dev, __be16 proto,
629 unsigned s 664 unsigned short vid)
630 { 665 {
631 struct batadv_priv *bat_priv = netdev_ 666 struct batadv_priv *bat_priv = netdev_priv(dev);
632 struct batadv_softif_vlan *vlan; 667 struct batadv_softif_vlan *vlan;
>> 668 int ret;
633 669
634 /* only 802.1Q vlans are supported. 670 /* only 802.1Q vlans are supported.
635 * batman-adv does not know how to han 671 * batman-adv does not know how to handle other types
636 */ 672 */
637 if (proto != htons(ETH_P_8021Q)) 673 if (proto != htons(ETH_P_8021Q))
638 return -EINVAL; 674 return -EINVAL;
639 675
640 vid |= BATADV_VLAN_HAS_TAG; 676 vid |= BATADV_VLAN_HAS_TAG;
641 677
642 /* if a new vlan is getting created an 678 /* if a new vlan is getting created and it already exists, it means that
643 * it was not deleted yet. batadv_soft 679 * it was not deleted yet. batadv_softif_vlan_get() increases the
644 * refcount in order to revive the obj 680 * refcount in order to revive the object.
645 * 681 *
646 * if it does not exist then create it 682 * if it does not exist then create it.
647 */ 683 */
648 vlan = batadv_softif_vlan_get(bat_priv 684 vlan = batadv_softif_vlan_get(bat_priv, vid);
649 if (!vlan) 685 if (!vlan)
650 return batadv_softif_create_vl 686 return batadv_softif_create_vlan(bat_priv, vid);
651 687
>> 688 /* recreate the sysfs object if it was already destroyed (and it should
>> 689 * be since we received a kill_vid() for this vlan
>> 690 */
>> 691 if (!vlan->kobj) {
>> 692 ret = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan);
>> 693 if (ret) {
>> 694 batadv_softif_vlan_put(vlan);
>> 695 return ret;
>> 696 }
>> 697 }
>> 698
652 /* add a new TT local entry. This one 699 /* add a new TT local entry. This one will be marked with the NOPURGE
653 * flag. This must be added again, eve 700 * flag. This must be added again, even if the vlan object already
654 * exists, because the entry was delet 701 * exists, because the entry was deleted by kill_vid()
655 */ 702 */
656 batadv_tt_local_add(bat_priv->soft_ifa 703 batadv_tt_local_add(bat_priv->soft_iface,
657 bat_priv->soft_ifa 704 bat_priv->soft_iface->dev_addr, vid,
658 BATADV_NULL_IFINDE 705 BATADV_NULL_IFINDEX, BATADV_NO_MARK);
659 706
660 return 0; 707 return 0;
661 } 708 }
662 709
663 /** 710 /**
664 * batadv_interface_kill_vid() - ndo_kill_vid 711 * batadv_interface_kill_vid() - ndo_kill_vid API implementation
665 * @dev: the netdev of the mesh interface 712 * @dev: the netdev of the mesh interface
666 * @proto: protocol of the vlan id !! 713 * @proto: protocol of the the vlan id
667 * @vid: identifier of the deleted vlan 714 * @vid: identifier of the deleted vlan
668 * 715 *
669 * Destroy all the internal structures used to 716 * Destroy all the internal structures used to handle the vlan identified by vid
670 * on top of the mesh interface 717 * on top of the mesh interface
671 * 718 *
672 * Return: 0 on success, -EINVAL if the specif 719 * Return: 0 on success, -EINVAL if the specified prototype is not ETH_P_8021Q
673 * or -ENOENT if the specified vlan id wasn't 720 * or -ENOENT if the specified vlan id wasn't registered.
674 */ 721 */
675 static int batadv_interface_kill_vid(struct ne 722 static int batadv_interface_kill_vid(struct net_device *dev, __be16 proto,
676 unsigned 723 unsigned short vid)
677 { 724 {
678 struct batadv_priv *bat_priv = netdev_ 725 struct batadv_priv *bat_priv = netdev_priv(dev);
679 struct batadv_softif_vlan *vlan; 726 struct batadv_softif_vlan *vlan;
680 727
681 /* only 802.1Q vlans are supported. ba 728 /* only 802.1Q vlans are supported. batman-adv does not know how to
682 * handle other types 729 * handle other types
683 */ 730 */
684 if (proto != htons(ETH_P_8021Q)) 731 if (proto != htons(ETH_P_8021Q))
685 return -EINVAL; 732 return -EINVAL;
686 733
687 vlan = batadv_softif_vlan_get(bat_priv 734 vlan = batadv_softif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG);
688 if (!vlan) 735 if (!vlan)
689 return -ENOENT; 736 return -ENOENT;
690 737
691 batadv_softif_destroy_vlan(bat_priv, v 738 batadv_softif_destroy_vlan(bat_priv, vlan);
692 739
693 /* finally free the vlan object */ 740 /* finally free the vlan object */
694 batadv_softif_vlan_put(vlan); 741 batadv_softif_vlan_put(vlan);
695 742
696 return 0; 743 return 0;
697 } 744 }
698 745
699 /* batman-adv network devices have devices nes 746 /* batman-adv network devices have devices nesting below it and are a special
700 * "super class" of normal network devices; sp 747 * "super class" of normal network devices; split their locks off into a
701 * separate class since they always nest. 748 * separate class since they always nest.
702 */ 749 */
703 static struct lock_class_key batadv_netdev_xmi 750 static struct lock_class_key batadv_netdev_xmit_lock_key;
704 static struct lock_class_key batadv_netdev_add 751 static struct lock_class_key batadv_netdev_addr_lock_key;
705 752
706 /** 753 /**
707 * batadv_set_lockdep_class_one() - Set lockde 754 * batadv_set_lockdep_class_one() - Set lockdep class for a single tx queue
708 * @dev: device which owns the tx queue 755 * @dev: device which owns the tx queue
709 * @txq: tx queue to modify 756 * @txq: tx queue to modify
710 * @_unused: always NULL 757 * @_unused: always NULL
711 */ 758 */
712 static void batadv_set_lockdep_class_one(struc 759 static void batadv_set_lockdep_class_one(struct net_device *dev,
713 struc 760 struct netdev_queue *txq,
714 void 761 void *_unused)
715 { 762 {
716 lockdep_set_class(&txq->_xmit_lock, &b 763 lockdep_set_class(&txq->_xmit_lock, &batadv_netdev_xmit_lock_key);
717 } 764 }
718 765
719 /** 766 /**
720 * batadv_set_lockdep_class() - Set txq and ad 767 * batadv_set_lockdep_class() - Set txq and addr_list lockdep class
721 * @dev: network device to modify 768 * @dev: network device to modify
722 */ 769 */
723 static void batadv_set_lockdep_class(struct ne 770 static void batadv_set_lockdep_class(struct net_device *dev)
724 { 771 {
725 lockdep_set_class(&dev->addr_list_lock 772 lockdep_set_class(&dev->addr_list_lock, &batadv_netdev_addr_lock_key);
726 netdev_for_each_tx_queue(dev, batadv_s 773 netdev_for_each_tx_queue(dev, batadv_set_lockdep_class_one, NULL);
727 } 774 }
728 775
729 /** 776 /**
730 * batadv_softif_init_late() - late stage init 777 * batadv_softif_init_late() - late stage initialization of soft interface
731 * @dev: registered network device to modify 778 * @dev: registered network device to modify
732 * 779 *
733 * Return: error code on failures 780 * Return: error code on failures
734 */ 781 */
735 static int batadv_softif_init_late(struct net_ 782 static int batadv_softif_init_late(struct net_device *dev)
736 { 783 {
737 struct batadv_priv *bat_priv; 784 struct batadv_priv *bat_priv;
738 u32 random_seqno; 785 u32 random_seqno;
739 int ret; 786 int ret;
740 size_t cnt_len = sizeof(u64) * BATADV_ 787 size_t cnt_len = sizeof(u64) * BATADV_CNT_NUM;
741 788
742 batadv_set_lockdep_class(dev); 789 batadv_set_lockdep_class(dev);
743 790
744 bat_priv = netdev_priv(dev); 791 bat_priv = netdev_priv(dev);
745 bat_priv->soft_iface = dev; 792 bat_priv->soft_iface = dev;
746 793
747 /* batadv_interface_stats() needs to b 794 /* batadv_interface_stats() needs to be available as soon as
748 * register_netdevice() has been calle 795 * register_netdevice() has been called
749 */ 796 */
750 bat_priv->bat_counters = __alloc_percp 797 bat_priv->bat_counters = __alloc_percpu(cnt_len, __alignof__(u64));
751 if (!bat_priv->bat_counters) 798 if (!bat_priv->bat_counters)
752 return -ENOMEM; 799 return -ENOMEM;
753 800
754 atomic_set(&bat_priv->aggregated_ogms, 801 atomic_set(&bat_priv->aggregated_ogms, 1);
755 atomic_set(&bat_priv->bonding, 0); 802 atomic_set(&bat_priv->bonding, 0);
756 #ifdef CONFIG_BATMAN_ADV_BLA 803 #ifdef CONFIG_BATMAN_ADV_BLA
757 atomic_set(&bat_priv->bridge_loop_avoi 804 atomic_set(&bat_priv->bridge_loop_avoidance, 1);
758 #endif 805 #endif
759 #ifdef CONFIG_BATMAN_ADV_DAT 806 #ifdef CONFIG_BATMAN_ADV_DAT
760 atomic_set(&bat_priv->distributed_arp_ 807 atomic_set(&bat_priv->distributed_arp_table, 1);
761 #endif 808 #endif
762 #ifdef CONFIG_BATMAN_ADV_MCAST 809 #ifdef CONFIG_BATMAN_ADV_MCAST
>> 810 bat_priv->mcast.querier_ipv4.exists = false;
>> 811 bat_priv->mcast.querier_ipv4.shadowing = false;
>> 812 bat_priv->mcast.querier_ipv6.exists = false;
>> 813 bat_priv->mcast.querier_ipv6.shadowing = false;
>> 814 bat_priv->mcast.flags = BATADV_NO_FLAGS;
763 atomic_set(&bat_priv->multicast_mode, 815 atomic_set(&bat_priv->multicast_mode, 1);
764 atomic_set(&bat_priv->multicast_fanout <<
765 atomic_set(&bat_priv->mcast.num_want_a 816 atomic_set(&bat_priv->mcast.num_want_all_unsnoopables, 0);
766 atomic_set(&bat_priv->mcast.num_want_a 817 atomic_set(&bat_priv->mcast.num_want_all_ipv4, 0);
767 atomic_set(&bat_priv->mcast.num_want_a 818 atomic_set(&bat_priv->mcast.num_want_all_ipv6, 0);
768 atomic_set(&bat_priv->mcast.num_no_mc_ <<
769 #endif 819 #endif
770 atomic_set(&bat_priv->gw.mode, BATADV_ 820 atomic_set(&bat_priv->gw.mode, BATADV_GW_MODE_OFF);
771 atomic_set(&bat_priv->gw.bandwidth_dow 821 atomic_set(&bat_priv->gw.bandwidth_down, 100);
772 atomic_set(&bat_priv->gw.bandwidth_up, 822 atomic_set(&bat_priv->gw.bandwidth_up, 20);
773 atomic_set(&bat_priv->orig_interval, 1 823 atomic_set(&bat_priv->orig_interval, 1000);
774 atomic_set(&bat_priv->hop_penalty, 30) 824 atomic_set(&bat_priv->hop_penalty, 30);
775 #ifdef CONFIG_BATMAN_ADV_DEBUG 825 #ifdef CONFIG_BATMAN_ADV_DEBUG
776 atomic_set(&bat_priv->log_level, 0); 826 atomic_set(&bat_priv->log_level, 0);
777 #endif 827 #endif
778 atomic_set(&bat_priv->fragmentation, 1 828 atomic_set(&bat_priv->fragmentation, 1);
779 atomic_set(&bat_priv->packet_size_max, 829 atomic_set(&bat_priv->packet_size_max, ETH_DATA_LEN);
780 atomic_set(&bat_priv->bcast_queue_left 830 atomic_set(&bat_priv->bcast_queue_left, BATADV_BCAST_QUEUE_LEN);
781 atomic_set(&bat_priv->batman_queue_lef 831 atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN);
782 832
783 atomic_set(&bat_priv->mesh_state, BATA 833 atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE);
784 atomic_set(&bat_priv->bcast_seqno, 1); 834 atomic_set(&bat_priv->bcast_seqno, 1);
785 atomic_set(&bat_priv->tt.vn, 0); 835 atomic_set(&bat_priv->tt.vn, 0);
786 atomic_set(&bat_priv->tt.local_changes 836 atomic_set(&bat_priv->tt.local_changes, 0);
787 atomic_set(&bat_priv->tt.ogm_append_cn 837 atomic_set(&bat_priv->tt.ogm_append_cnt, 0);
788 #ifdef CONFIG_BATMAN_ADV_BLA 838 #ifdef CONFIG_BATMAN_ADV_BLA
789 atomic_set(&bat_priv->bla.num_requests 839 atomic_set(&bat_priv->bla.num_requests, 0);
790 #endif 840 #endif
791 atomic_set(&bat_priv->tp_num, 0); 841 atomic_set(&bat_priv->tp_num, 0);
792 842
793 bat_priv->tt.last_changeset = NULL; 843 bat_priv->tt.last_changeset = NULL;
794 bat_priv->tt.last_changeset_len = 0; 844 bat_priv->tt.last_changeset_len = 0;
795 bat_priv->isolation_mark = 0; 845 bat_priv->isolation_mark = 0;
796 bat_priv->isolation_mark_mask = 0; 846 bat_priv->isolation_mark_mask = 0;
797 847
798 /* randomize initial seqno to avoid co 848 /* randomize initial seqno to avoid collision */
799 get_random_bytes(&random_seqno, sizeof 849 get_random_bytes(&random_seqno, sizeof(random_seqno));
800 atomic_set(&bat_priv->frag_seqno, rand 850 atomic_set(&bat_priv->frag_seqno, random_seqno);
801 851
802 bat_priv->primary_if = NULL; 852 bat_priv->primary_if = NULL;
>> 853 bat_priv->num_ifaces = 0;
803 854
804 batadv_nc_init_bat_priv(bat_priv); 855 batadv_nc_init_bat_priv(bat_priv);
805 856
806 if (!bat_priv->algo_ops) { !! 857 ret = batadv_algo_select(bat_priv, batadv_routing_algo);
807 ret = batadv_algo_select(bat_p !! 858 if (ret < 0)
808 if (ret < 0) !! 859 goto free_bat_counters;
809 goto free_bat_counters <<
810 } <<
811 860
812 ret = batadv_mesh_init(dev); !! 861 ret = batadv_debugfs_add_meshif(dev);
813 if (ret < 0) 862 if (ret < 0)
814 goto free_bat_counters; 863 goto free_bat_counters;
815 864
>> 865 ret = batadv_mesh_init(dev);
>> 866 if (ret < 0)
>> 867 goto unreg_debugfs;
>> 868
816 return 0; 869 return 0;
817 870
>> 871 unreg_debugfs:
>> 872 batadv_debugfs_del_meshif(dev);
818 free_bat_counters: 873 free_bat_counters:
819 free_percpu(bat_priv->bat_counters); 874 free_percpu(bat_priv->bat_counters);
820 bat_priv->bat_counters = NULL; 875 bat_priv->bat_counters = NULL;
821 876
822 return ret; 877 return ret;
823 } 878 }
824 879
825 /** 880 /**
826 * batadv_softif_slave_add() - Add a slave int 881 * batadv_softif_slave_add() - Add a slave interface to a batadv_soft_interface
827 * @dev: batadv_soft_interface used as master 882 * @dev: batadv_soft_interface used as master interface
828 * @slave_dev: net_device which should become 883 * @slave_dev: net_device which should become the slave interface
829 * @extack: extended ACK report struct 884 * @extack: extended ACK report struct
830 * 885 *
831 * Return: 0 if successful or error otherwise. 886 * Return: 0 if successful or error otherwise.
832 */ 887 */
833 static int batadv_softif_slave_add(struct net_ 888 static int batadv_softif_slave_add(struct net_device *dev,
834 struct net_ 889 struct net_device *slave_dev,
835 struct netl 890 struct netlink_ext_ack *extack)
836 { 891 {
837 struct batadv_hard_iface *hard_iface; 892 struct batadv_hard_iface *hard_iface;
>> 893 struct net *net = dev_net(dev);
838 int ret = -EINVAL; 894 int ret = -EINVAL;
839 895
840 hard_iface = batadv_hardif_get_by_netd 896 hard_iface = batadv_hardif_get_by_netdev(slave_dev);
841 if (!hard_iface || hard_iface->soft_if 897 if (!hard_iface || hard_iface->soft_iface)
842 goto out; 898 goto out;
843 899
844 ret = batadv_hardif_enable_interface(h !! 900 ret = batadv_hardif_enable_interface(hard_iface, net, dev->name);
845 901
846 out: 902 out:
847 batadv_hardif_put(hard_iface); !! 903 if (hard_iface)
>> 904 batadv_hardif_put(hard_iface);
848 return ret; 905 return ret;
849 } 906 }
850 907
851 /** 908 /**
852 * batadv_softif_slave_del() - Delete a slave 909 * batadv_softif_slave_del() - Delete a slave iface from a batadv_soft_interface
853 * @dev: batadv_soft_interface used as master 910 * @dev: batadv_soft_interface used as master interface
854 * @slave_dev: net_device which should be remo 911 * @slave_dev: net_device which should be removed from the master interface
855 * 912 *
856 * Return: 0 if successful or error otherwise. 913 * Return: 0 if successful or error otherwise.
857 */ 914 */
858 static int batadv_softif_slave_del(struct net_ 915 static int batadv_softif_slave_del(struct net_device *dev,
859 struct net_ 916 struct net_device *slave_dev)
860 { 917 {
861 struct batadv_hard_iface *hard_iface; 918 struct batadv_hard_iface *hard_iface;
862 int ret = -EINVAL; 919 int ret = -EINVAL;
863 920
864 hard_iface = batadv_hardif_get_by_netd 921 hard_iface = batadv_hardif_get_by_netdev(slave_dev);
865 922
866 if (!hard_iface || hard_iface->soft_if 923 if (!hard_iface || hard_iface->soft_iface != dev)
867 goto out; 924 goto out;
868 925
869 batadv_hardif_disable_interface(hard_i !! 926 batadv_hardif_disable_interface(hard_iface, BATADV_IF_CLEANUP_KEEP);
870 ret = 0; 927 ret = 0;
871 928
872 out: 929 out:
873 batadv_hardif_put(hard_iface); !! 930 if (hard_iface)
>> 931 batadv_hardif_put(hard_iface);
874 return ret; 932 return ret;
875 } 933 }
876 934
877 static const struct net_device_ops batadv_netd 935 static const struct net_device_ops batadv_netdev_ops = {
878 .ndo_init = batadv_softif_init_late, 936 .ndo_init = batadv_softif_init_late,
879 .ndo_open = batadv_interface_open, 937 .ndo_open = batadv_interface_open,
880 .ndo_stop = batadv_interface_release, 938 .ndo_stop = batadv_interface_release,
881 .ndo_get_stats = batadv_interface_stat 939 .ndo_get_stats = batadv_interface_stats,
882 .ndo_vlan_rx_add_vid = batadv_interfac 940 .ndo_vlan_rx_add_vid = batadv_interface_add_vid,
883 .ndo_vlan_rx_kill_vid = batadv_interfa 941 .ndo_vlan_rx_kill_vid = batadv_interface_kill_vid,
884 .ndo_set_mac_address = batadv_interfac 942 .ndo_set_mac_address = batadv_interface_set_mac_addr,
885 .ndo_change_mtu = batadv_interface_cha 943 .ndo_change_mtu = batadv_interface_change_mtu,
886 .ndo_set_rx_mode = batadv_interface_se 944 .ndo_set_rx_mode = batadv_interface_set_rx_mode,
887 .ndo_start_xmit = batadv_interface_tx, 945 .ndo_start_xmit = batadv_interface_tx,
888 .ndo_validate_addr = eth_validate_addr 946 .ndo_validate_addr = eth_validate_addr,
889 .ndo_add_slave = batadv_softif_slave_a 947 .ndo_add_slave = batadv_softif_slave_add,
890 .ndo_del_slave = batadv_softif_slave_d 948 .ndo_del_slave = batadv_softif_slave_del,
891 }; 949 };
892 950
893 static void batadv_get_drvinfo(struct net_devi 951 static void batadv_get_drvinfo(struct net_device *dev,
894 struct ethtool_ 952 struct ethtool_drvinfo *info)
895 { 953 {
896 strscpy(info->driver, "B.A.T.M.A.N. ad !! 954 strlcpy(info->driver, "B.A.T.M.A.N. advanced", sizeof(info->driver));
897 strscpy(info->version, BATADV_SOURCE_V !! 955 strlcpy(info->version, BATADV_SOURCE_VERSION, sizeof(info->version));
898 strscpy(info->fw_version, "N/A", sizeo !! 956 strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
899 strscpy(info->bus_info, "batman", size !! 957 strlcpy(info->bus_info, "batman", sizeof(info->bus_info));
900 } 958 }
901 959
902 /* Inspired by drivers/net/ethernet/dlink/sund 960 /* Inspired by drivers/net/ethernet/dlink/sundance.c:1702
903 * Declare each description string in struct.n 961 * Declare each description string in struct.name[] to get fixed sized buffer
904 * and compile time checking for strings longe 962 * and compile time checking for strings longer than ETH_GSTRING_LEN.
905 */ 963 */
906 static const struct { 964 static const struct {
907 const char name[ETH_GSTRING_LEN]; 965 const char name[ETH_GSTRING_LEN];
908 } batadv_counters_strings[] = { 966 } batadv_counters_strings[] = {
909 { "tx" }, 967 { "tx" },
910 { "tx_bytes" }, 968 { "tx_bytes" },
911 { "tx_dropped" }, 969 { "tx_dropped" },
912 { "rx" }, 970 { "rx" },
913 { "rx_bytes" }, 971 { "rx_bytes" },
914 { "forward" }, 972 { "forward" },
915 { "forward_bytes" }, 973 { "forward_bytes" },
916 { "mgmt_tx" }, 974 { "mgmt_tx" },
917 { "mgmt_tx_bytes" }, 975 { "mgmt_tx_bytes" },
918 { "mgmt_rx" }, 976 { "mgmt_rx" },
919 { "mgmt_rx_bytes" }, 977 { "mgmt_rx_bytes" },
920 { "frag_tx" }, 978 { "frag_tx" },
921 { "frag_tx_bytes" }, 979 { "frag_tx_bytes" },
922 { "frag_rx" }, 980 { "frag_rx" },
923 { "frag_rx_bytes" }, 981 { "frag_rx_bytes" },
924 { "frag_fwd" }, 982 { "frag_fwd" },
925 { "frag_fwd_bytes" }, 983 { "frag_fwd_bytes" },
926 { "tt_request_tx" }, 984 { "tt_request_tx" },
927 { "tt_request_rx" }, 985 { "tt_request_rx" },
928 { "tt_response_tx" }, 986 { "tt_response_tx" },
929 { "tt_response_rx" }, 987 { "tt_response_rx" },
930 { "tt_roam_adv_tx" }, 988 { "tt_roam_adv_tx" },
931 { "tt_roam_adv_rx" }, 989 { "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 990 #ifdef CONFIG_BATMAN_ADV_DAT
945 { "dat_get_tx" }, 991 { "dat_get_tx" },
946 { "dat_get_rx" }, 992 { "dat_get_rx" },
947 { "dat_put_tx" }, 993 { "dat_put_tx" },
948 { "dat_put_rx" }, 994 { "dat_put_rx" },
949 { "dat_cached_reply_tx" }, 995 { "dat_cached_reply_tx" },
950 #endif 996 #endif
951 #ifdef CONFIG_BATMAN_ADV_NC 997 #ifdef CONFIG_BATMAN_ADV_NC
952 { "nc_code" }, 998 { "nc_code" },
953 { "nc_code_bytes" }, 999 { "nc_code_bytes" },
954 { "nc_recode" }, 1000 { "nc_recode" },
955 { "nc_recode_bytes" }, 1001 { "nc_recode_bytes" },
956 { "nc_buffer" }, 1002 { "nc_buffer" },
957 { "nc_decode" }, 1003 { "nc_decode" },
958 { "nc_decode_bytes" }, 1004 { "nc_decode_bytes" },
959 { "nc_decode_failed" }, 1005 { "nc_decode_failed" },
960 { "nc_sniffed" }, 1006 { "nc_sniffed" },
961 #endif 1007 #endif
962 }; 1008 };
963 1009
964 static void batadv_get_strings(struct net_devi 1010 static void batadv_get_strings(struct net_device *dev, u32 stringset, u8 *data)
965 { 1011 {
966 if (stringset == ETH_SS_STATS) 1012 if (stringset == ETH_SS_STATS)
967 memcpy(data, batadv_counters_s 1013 memcpy(data, batadv_counters_strings,
968 sizeof(batadv_counters_ 1014 sizeof(batadv_counters_strings));
969 } 1015 }
970 1016
971 static void batadv_get_ethtool_stats(struct ne 1017 static void batadv_get_ethtool_stats(struct net_device *dev,
972 struct et 1018 struct ethtool_stats *stats, u64 *data)
973 { 1019 {
974 struct batadv_priv *bat_priv = netdev_ 1020 struct batadv_priv *bat_priv = netdev_priv(dev);
975 int i; 1021 int i;
976 1022
977 for (i = 0; i < BATADV_CNT_NUM; i++) 1023 for (i = 0; i < BATADV_CNT_NUM; i++)
978 data[i] = batadv_sum_counter(b 1024 data[i] = batadv_sum_counter(bat_priv, i);
979 } 1025 }
980 1026
981 static int batadv_get_sset_count(struct net_de 1027 static int batadv_get_sset_count(struct net_device *dev, int stringset)
982 { 1028 {
983 if (stringset == ETH_SS_STATS) 1029 if (stringset == ETH_SS_STATS)
984 return BATADV_CNT_NUM; 1030 return BATADV_CNT_NUM;
985 1031
986 return -EOPNOTSUPP; 1032 return -EOPNOTSUPP;
987 } 1033 }
988 1034
989 static const struct ethtool_ops batadv_ethtool 1035 static const struct ethtool_ops batadv_ethtool_ops = {
990 .get_drvinfo = batadv_get_drvinfo, 1036 .get_drvinfo = batadv_get_drvinfo,
991 .get_link = ethtool_op_get_link, 1037 .get_link = ethtool_op_get_link,
992 .get_strings = batadv_get_strings, 1038 .get_strings = batadv_get_strings,
993 .get_ethtool_stats = batadv_get_ethtoo 1039 .get_ethtool_stats = batadv_get_ethtool_stats,
994 .get_sset_count = batadv_get_sset_coun 1040 .get_sset_count = batadv_get_sset_count,
995 }; 1041 };
996 1042
997 /** 1043 /**
998 * batadv_softif_free() - Deconstructor of bat 1044 * batadv_softif_free() - Deconstructor of batadv_soft_interface
999 * @dev: Device to cleanup and remove 1045 * @dev: Device to cleanup and remove
1000 */ 1046 */
1001 static void batadv_softif_free(struct net_dev 1047 static void batadv_softif_free(struct net_device *dev)
1002 { 1048 {
>> 1049 batadv_debugfs_del_meshif(dev);
1003 batadv_mesh_free(dev); 1050 batadv_mesh_free(dev);
1004 1051
1005 /* some scheduled RCU callbacks need 1052 /* some scheduled RCU callbacks need the bat_priv struct to accomplish
1006 * their tasks. Wait for them all to 1053 * their tasks. Wait for them all to be finished before freeing the
1007 * netdev and its private data (bat_p 1054 * netdev and its private data (bat_priv)
1008 */ 1055 */
1009 rcu_barrier(); 1056 rcu_barrier();
1010 } 1057 }
1011 1058
1012 /** 1059 /**
1013 * batadv_softif_init_early() - early stage i 1060 * batadv_softif_init_early() - early stage initialization of soft interface
1014 * @dev: registered network device to modify 1061 * @dev: registered network device to modify
1015 */ 1062 */
1016 static void batadv_softif_init_early(struct n 1063 static void batadv_softif_init_early(struct net_device *dev)
1017 { 1064 {
1018 ether_setup(dev); 1065 ether_setup(dev);
1019 1066
1020 dev->netdev_ops = &batadv_netdev_ops; 1067 dev->netdev_ops = &batadv_netdev_ops;
1021 dev->needs_free_netdev = true; 1068 dev->needs_free_netdev = true;
1022 dev->priv_destructor = batadv_softif_ 1069 dev->priv_destructor = batadv_softif_free;
1023 dev->features |= NETIF_F_HW_VLAN_CTAG !! 1070 dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_NETNS_LOCAL;
1024 dev->priv_flags |= IFF_NO_QUEUE; 1071 dev->priv_flags |= IFF_NO_QUEUE;
1025 dev->lltx = true; <<
1026 dev->netns_local = true; <<
1027 1072
1028 /* can't call min_mtu, because the ne 1073 /* can't call min_mtu, because the needed variables
1029 * have not been initialized yet 1074 * have not been initialized yet
1030 */ 1075 */
1031 dev->mtu = ETH_DATA_LEN; 1076 dev->mtu = ETH_DATA_LEN;
1032 1077
1033 /* generate random address */ 1078 /* generate random address */
1034 eth_hw_addr_random(dev); 1079 eth_hw_addr_random(dev);
1035 1080
1036 dev->ethtool_ops = &batadv_ethtool_op 1081 dev->ethtool_ops = &batadv_ethtool_ops;
1037 } 1082 }
1038 1083
1039 /** 1084 /**
1040 * batadv_softif_validate() - validate config !! 1085 * batadv_softif_create() - Create and register soft interface
1041 * @tb: IFLA_INFO_DATA netlink attributes !! 1086 * @net: the applicable net namespace
1042 * @data: enum batadv_ifla_attrs attributes !! 1087 * @name: name of the new soft interface
1043 * @extack: extended ACK report struct <<
1044 * 1088 *
1045 * Return: 0 if successful or error otherwise !! 1089 * Return: newly allocated soft_interface, NULL on errors
1046 */ 1090 */
1047 static int batadv_softif_validate(struct nlat !! 1091 struct net_device *batadv_softif_create(struct net *net, const char *name)
1048 struct netl <<
1049 { 1092 {
1050 struct batadv_algo_ops *algo_ops; !! 1093 struct net_device *soft_iface;
1051 !! 1094 int ret;
1052 if (!data) <<
1053 return 0; <<
1054 1095
1055 if (data[IFLA_BATADV_ALGO_NAME]) { !! 1096 soft_iface = alloc_netdev(sizeof(struct batadv_priv), name,
1056 algo_ops = batadv_algo_get(nl !! 1097 NET_NAME_UNKNOWN, batadv_softif_init_early);
1057 if (!algo_ops) !! 1098 if (!soft_iface)
1058 return -EINVAL; !! 1099 return NULL;
>> 1100
>> 1101 dev_net_set(soft_iface, net);
>> 1102
>> 1103 soft_iface->rtnl_link_ops = &batadv_link_ops;
>> 1104
>> 1105 ret = register_netdevice(soft_iface);
>> 1106 if (ret < 0) {
>> 1107 pr_err("Unable to register the batman interface '%s': %i\n",
>> 1108 name, ret);
>> 1109 free_netdev(soft_iface);
>> 1110 return NULL;
1059 } 1111 }
1060 1112
1061 return 0; !! 1113 return soft_iface;
1062 } 1114 }
1063 1115
1064 /** 1116 /**
1065 * batadv_softif_newlink() - pre-initialize a !! 1117 * batadv_softif_destroy_sysfs() - deletion of batadv_soft_interface via sysfs
1066 * @src_net: the applicable net namespace !! 1118 * @soft_iface: the to-be-removed batman-adv interface
1067 * @dev: network device to register <<
1068 * @tb: IFLA_INFO_DATA netlink attributes <<
1069 * @data: enum batadv_ifla_attrs attributes <<
1070 * @extack: extended ACK report struct <<
1071 * <<
1072 * Return: 0 if successful or error otherwise <<
1073 */ 1119 */
1074 static int batadv_softif_newlink(struct net * !! 1120 void batadv_softif_destroy_sysfs(struct net_device *soft_iface)
1075 struct nlatt <<
1076 struct netli <<
1077 { 1121 {
1078 struct batadv_priv *bat_priv = netdev !! 1122 struct batadv_priv *bat_priv = netdev_priv(soft_iface);
1079 const char *algo_name; !! 1123 struct batadv_softif_vlan *vlan;
1080 int err; !! 1124
>> 1125 ASSERT_RTNL();
1081 1126
1082 if (data && data[IFLA_BATADV_ALGO_NAM !! 1127 /* destroy the "untagged" VLAN */
1083 algo_name = nla_data(data[IFL !! 1128 vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS);
1084 err = batadv_algo_select(bat_ !! 1129 if (vlan) {
1085 if (err) !! 1130 batadv_softif_destroy_vlan(bat_priv, vlan);
1086 return -EINVAL; !! 1131 batadv_softif_vlan_put(vlan);
1087 } 1132 }
1088 1133
1089 return register_netdevice(dev); !! 1134 batadv_sysfs_del_meshif(soft_iface);
>> 1135 unregister_netdevice(soft_iface);
1090 } 1136 }
1091 1137
1092 /** 1138 /**
1093 * batadv_softif_destroy_netlink() - deletion 1139 * batadv_softif_destroy_netlink() - deletion of batadv_soft_interface via
1094 * netlink 1140 * netlink
1095 * @soft_iface: the to-be-removed batman-adv 1141 * @soft_iface: the to-be-removed batman-adv interface
1096 * @head: list pointer 1142 * @head: list pointer
1097 */ 1143 */
1098 static void batadv_softif_destroy_netlink(str 1144 static void batadv_softif_destroy_netlink(struct net_device *soft_iface,
1099 str 1145 struct list_head *head)
1100 { 1146 {
1101 struct batadv_priv *bat_priv = netdev 1147 struct batadv_priv *bat_priv = netdev_priv(soft_iface);
1102 struct batadv_hard_iface *hard_iface; 1148 struct batadv_hard_iface *hard_iface;
1103 struct batadv_softif_vlan *vlan; 1149 struct batadv_softif_vlan *vlan;
1104 1150
1105 list_for_each_entry(hard_iface, &bata 1151 list_for_each_entry(hard_iface, &batadv_hardif_list, list) {
1106 if (hard_iface->soft_iface == 1152 if (hard_iface->soft_iface == soft_iface)
1107 batadv_hardif_disable !! 1153 batadv_hardif_disable_interface(hard_iface,
>> 1154 BATADV_IF_CLEANUP_KEEP);
1108 } 1155 }
1109 1156
1110 /* destroy the "untagged" VLAN */ 1157 /* destroy the "untagged" VLAN */
1111 vlan = batadv_softif_vlan_get(bat_pri 1158 vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS);
1112 if (vlan) { 1159 if (vlan) {
1113 batadv_softif_destroy_vlan(ba 1160 batadv_softif_destroy_vlan(bat_priv, vlan);
1114 batadv_softif_vlan_put(vlan); 1161 batadv_softif_vlan_put(vlan);
1115 } 1162 }
1116 1163
>> 1164 batadv_sysfs_del_meshif(soft_iface);
1117 unregister_netdevice_queue(soft_iface 1165 unregister_netdevice_queue(soft_iface, head);
1118 } 1166 }
1119 1167
1120 /** 1168 /**
1121 * batadv_softif_is_valid() - Check whether d 1169 * batadv_softif_is_valid() - Check whether device is a batadv soft interface
1122 * @net_dev: device which should be checked 1170 * @net_dev: device which should be checked
1123 * 1171 *
1124 * Return: true when net_dev is a batman-adv 1172 * Return: true when net_dev is a batman-adv interface, false otherwise
1125 */ 1173 */
1126 bool batadv_softif_is_valid(const struct net_ 1174 bool batadv_softif_is_valid(const struct net_device *net_dev)
1127 { 1175 {
1128 if (net_dev->netdev_ops->ndo_start_xm 1176 if (net_dev->netdev_ops->ndo_start_xmit == batadv_interface_tx)
1129 return true; 1177 return true;
1130 1178
1131 return false; 1179 return false;
1132 } 1180 }
1133 1181
1134 static const struct nla_policy batadv_ifla_po <<
1135 [IFLA_BATADV_ALGO_NAME] = { .type = N <<
1136 }; <<
1137 <<
1138 struct rtnl_link_ops batadv_link_ops __read_m 1182 struct rtnl_link_ops batadv_link_ops __read_mostly = {
1139 .kind = "batadv", 1183 .kind = "batadv",
1140 .priv_size = sizeof(struct batad 1184 .priv_size = sizeof(struct batadv_priv),
1141 .setup = batadv_softif_init_ 1185 .setup = batadv_softif_init_early,
1142 .maxtype = IFLA_BATADV_MAX, <<
1143 .policy = batadv_ifla_policy, <<
1144 .validate = batadv_softif_valid <<
1145 .newlink = batadv_softif_newli <<
1146 .dellink = batadv_softif_destr 1186 .dellink = batadv_softif_destroy_netlink,
1147 }; 1187 };
1148 1188
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