blob: bcabb5e3f4d3a2c3478999b3deb80b1a7595500b [file] [log] [blame]
Sven Eckelmann9f6446c2015-04-23 13:16:35 +02001/* Copyright (C) 2007-2015 B.A.T.M.A.N. contributors:
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +00002 *
3 * Marek Lindner
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
Antonio Quartulliebf38fb2013-11-03 20:40:48 +010015 * along with this program; if not, see <http://www.gnu.org/licenses/>.
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000016 */
17
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000018#include "icmp_socket.h"
Sven Eckelmann1e2c2a42015-04-17 19:40:28 +020019#include "main.h"
20
21#include <linux/atomic.h>
22#include <linux/compiler.h>
23#include <linux/debugfs.h>
24#include <linux/errno.h>
25#include <linux/etherdevice.h>
26#include <linux/export.h>
27#include <linux/fcntl.h>
28#include <linux/fs.h>
29#include <linux/if_ether.h>
30#include <linux/kernel.h>
31#include <linux/list.h>
32#include <linux/module.h>
33#include <linux/netdevice.h>
34#include <linux/pkt_sched.h>
35#include <linux/poll.h>
36#include <linux/printk.h>
37#include <linux/sched.h> /* for linux/wait.h */
38#include <linux/skbuff.h>
39#include <linux/slab.h>
40#include <linux/spinlock.h>
41#include <linux/stat.h>
42#include <linux/stddef.h>
43#include <linux/string.h>
44#include <linux/uaccess.h>
45#include <linux/wait.h>
46
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000047#include "hard-interface.h"
Sven Eckelmann1e2c2a42015-04-17 19:40:28 +020048#include "originator.h"
49#include "packet.h"
50#include "send.h"
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000051
Sven Eckelmann56303d32012-06-05 22:31:31 +020052static struct batadv_socket_client *batadv_socket_client_hash[256];
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000053
Sven Eckelmann56303d32012-06-05 22:31:31 +020054static void batadv_socket_add_packet(struct batadv_socket_client *socket_client,
Simon Wunderlichda6b8c22013-10-22 22:50:09 +020055 struct batadv_icmp_header *icmph,
Sven Eckelmannaf4447f2012-05-12 18:33:59 +020056 size_t icmp_len);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000057
Sven Eckelmann9039dc72012-05-12 02:09:33 +020058void batadv_socket_init(void)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000059{
Sven Eckelmannaf4447f2012-05-12 18:33:59 +020060 memset(batadv_socket_client_hash, 0, sizeof(batadv_socket_client_hash));
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000061}
62
Sven Eckelmannaf4447f2012-05-12 18:33:59 +020063static int batadv_socket_open(struct inode *inode, struct file *file)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000064{
65 unsigned int i;
Sven Eckelmann56303d32012-06-05 22:31:31 +020066 struct batadv_socket_client *socket_client;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000067
Sven Eckelmannbd5b80d2012-08-20 23:37:26 +020068 if (!try_module_get(THIS_MODULE))
69 return -EBUSY;
70
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000071 nonseekable_open(inode, file);
72
Sven Eckelmann704509b2011-05-14 23:14:54 +020073 socket_client = kmalloc(sizeof(*socket_client), GFP_KERNEL);
Sven Eckelmannbd5b80d2012-08-20 23:37:26 +020074 if (!socket_client) {
75 module_put(THIS_MODULE);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000076 return -ENOMEM;
Sven Eckelmannbd5b80d2012-08-20 23:37:26 +020077 }
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000078
Sven Eckelmannaf4447f2012-05-12 18:33:59 +020079 for (i = 0; i < ARRAY_SIZE(batadv_socket_client_hash); i++) {
80 if (!batadv_socket_client_hash[i]) {
81 batadv_socket_client_hash[i] = socket_client;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000082 break;
83 }
84 }
85
Sven Eckelmannaf4447f2012-05-12 18:33:59 +020086 if (i == ARRAY_SIZE(batadv_socket_client_hash)) {
Sven Eckelmann86ceb362012-03-07 09:07:45 +010087 pr_err("Error - can't add another packet client: maximum number of clients reached\n");
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000088 kfree(socket_client);
Sven Eckelmannbd5b80d2012-08-20 23:37:26 +020089 module_put(THIS_MODULE);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000090 return -EXFULL;
91 }
92
93 INIT_LIST_HEAD(&socket_client->queue_list);
94 socket_client->queue_len = 0;
95 socket_client->index = i;
96 socket_client->bat_priv = inode->i_private;
97 spin_lock_init(&socket_client->lock);
98 init_waitqueue_head(&socket_client->queue_wait);
99
100 file->private_data = socket_client;
101
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000102 return 0;
103}
104
Sven Eckelmannaf4447f2012-05-12 18:33:59 +0200105static int batadv_socket_release(struct inode *inode, struct file *file)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000106{
Sven Eckelmann56303d32012-06-05 22:31:31 +0200107 struct batadv_socket_client *socket_client = file->private_data;
108 struct batadv_socket_packet *socket_packet;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000109 struct list_head *list_pos, *list_pos_tmp;
110
111 spin_lock_bh(&socket_client->lock);
112
113 /* for all packets in the queue ... */
114 list_for_each_safe(list_pos, list_pos_tmp, &socket_client->queue_list) {
115 socket_packet = list_entry(list_pos,
Sven Eckelmann56303d32012-06-05 22:31:31 +0200116 struct batadv_socket_packet, list);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000117
118 list_del(list_pos);
119 kfree(socket_packet);
120 }
121
Sven Eckelmannaf4447f2012-05-12 18:33:59 +0200122 batadv_socket_client_hash[socket_client->index] = NULL;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000123 spin_unlock_bh(&socket_client->lock);
124
125 kfree(socket_client);
Sven Eckelmannbd5b80d2012-08-20 23:37:26 +0200126 module_put(THIS_MODULE);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000127
128 return 0;
129}
130
Sven Eckelmannaf4447f2012-05-12 18:33:59 +0200131static ssize_t batadv_socket_read(struct file *file, char __user *buf,
132 size_t count, loff_t *ppos)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000133{
Sven Eckelmann56303d32012-06-05 22:31:31 +0200134 struct batadv_socket_client *socket_client = file->private_data;
135 struct batadv_socket_packet *socket_packet;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000136 size_t packet_len;
137 int error;
138
139 if ((file->f_flags & O_NONBLOCK) && (socket_client->queue_len == 0))
140 return -EAGAIN;
141
Sven Eckelmann96412692012-06-05 22:31:30 +0200142 if ((!buf) || (count < sizeof(struct batadv_icmp_packet)))
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000143 return -EINVAL;
144
145 if (!access_ok(VERIFY_WRITE, buf, count))
146 return -EFAULT;
147
148 error = wait_event_interruptible(socket_client->queue_wait,
149 socket_client->queue_len);
150
151 if (error)
152 return error;
153
154 spin_lock_bh(&socket_client->lock);
155
156 socket_packet = list_first_entry(&socket_client->queue_list,
Sven Eckelmann56303d32012-06-05 22:31:31 +0200157 struct batadv_socket_packet, list);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000158 list_del(&socket_packet->list);
159 socket_client->queue_len--;
160
161 spin_unlock_bh(&socket_client->lock);
162
Sven Eckelmannb5a1eee2011-12-10 15:28:36 +0100163 packet_len = min(count, socket_packet->icmp_len);
164 error = copy_to_user(buf, &socket_packet->icmp_packet, packet_len);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000165
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000166 kfree(socket_packet);
167
168 if (error)
169 return -EFAULT;
170
171 return packet_len;
172}
173
Sven Eckelmannaf4447f2012-05-12 18:33:59 +0200174static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
175 size_t len, loff_t *off)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000176{
Sven Eckelmann56303d32012-06-05 22:31:31 +0200177 struct batadv_socket_client *socket_client = file->private_data;
178 struct batadv_priv *bat_priv = socket_client->bat_priv;
179 struct batadv_hard_iface *primary_if = NULL;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000180 struct sk_buff *skb;
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200181 struct batadv_icmp_packet_rr *icmp_packet_rr;
182 struct batadv_icmp_header *icmp_header;
Sven Eckelmann56303d32012-06-05 22:31:31 +0200183 struct batadv_orig_node *orig_node = NULL;
184 struct batadv_neigh_node *neigh_node = NULL;
Sven Eckelmann96412692012-06-05 22:31:30 +0200185 size_t packet_len = sizeof(struct batadv_icmp_packet);
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200186 u8 *addr;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000187
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200188 if (len < sizeof(struct batadv_icmp_header)) {
Sven Eckelmann39c75a52012-06-03 22:19:22 +0200189 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
Sven Eckelmann1eda58b2012-05-12 13:48:58 +0200190 "Error - can't send packet from char device: invalid packet size\n");
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000191 return -EINVAL;
192 }
193
Sven Eckelmanne5d89252012-05-12 13:48:54 +0200194 primary_if = batadv_primary_if_get_selected(bat_priv);
Marek Lindner32ae9b22011-04-20 15:40:58 +0200195
196 if (!primary_if) {
197 len = -EFAULT;
198 goto out;
199 }
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000200
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200201 if (len >= BATADV_ICMP_MAX_PACKET_SIZE)
202 packet_len = BATADV_ICMP_MAX_PACKET_SIZE;
203 else
204 packet_len = len;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000205
Antonio Quartulli41ab6c42013-04-02 22:28:44 +0200206 skb = netdev_alloc_skb_ip_align(NULL, packet_len + ETH_HLEN);
Marek Lindner32ae9b22011-04-20 15:40:58 +0200207 if (!skb) {
208 len = -ENOMEM;
209 goto out;
210 }
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000211
Simon Wunderlichc54f38c2013-07-29 17:56:44 +0200212 skb->priority = TC_PRIO_CONTROL;
Antonio Quartulli41ab6c42013-04-02 22:28:44 +0200213 skb_reserve(skb, ETH_HLEN);
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200214 icmp_header = (struct batadv_icmp_header *)skb_put(skb, packet_len);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000215
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200216 if (copy_from_user(icmp_header, buff, packet_len)) {
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000217 len = -EFAULT;
218 goto free_skb;
219 }
220
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100221 if (icmp_header->packet_type != BATADV_ICMP) {
Sven Eckelmann39c75a52012-06-03 22:19:22 +0200222 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
Sven Eckelmann1eda58b2012-05-12 13:48:58 +0200223 "Error - can't send packet from char device: got bogus packet type (expected: BAT_ICMP)\n");
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000224 len = -EINVAL;
225 goto free_skb;
226 }
227
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200228 switch (icmp_header->msg_type) {
229 case BATADV_ECHO_REQUEST:
230 if (len < sizeof(struct batadv_icmp_packet)) {
231 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
232 "Error - can't send packet from char device: invalid packet size\n");
233 len = -EINVAL;
234 goto free_skb;
235 }
236
237 if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
238 goto dst_unreach;
239
240 orig_node = batadv_orig_hash_find(bat_priv, icmp_header->dst);
241 if (!orig_node)
242 goto dst_unreach;
243
Simon Wunderlich7351a4822013-11-13 19:14:47 +0100244 neigh_node = batadv_orig_router_get(orig_node,
245 BATADV_IF_DEFAULT);
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200246 if (!neigh_node)
247 goto dst_unreach;
248
249 if (!neigh_node->if_incoming)
250 goto dst_unreach;
251
252 if (neigh_node->if_incoming->if_status != BATADV_IF_ACTIVE)
253 goto dst_unreach;
254
255 icmp_packet_rr = (struct batadv_icmp_packet_rr *)icmp_header;
Antonio Quartulli8fdd0152014-01-22 00:42:11 +0100256 if (packet_len == sizeof(*icmp_packet_rr)) {
257 addr = neigh_node->if_incoming->net_dev->dev_addr;
258 ether_addr_copy(icmp_packet_rr->rr[0], addr);
259 }
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200260
261 break;
262 default:
Sven Eckelmann39c75a52012-06-03 22:19:22 +0200263 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200264 "Error - can't send packet from char device: got unknown message type\n");
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000265 len = -EINVAL;
266 goto free_skb;
267 }
268
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200269 icmp_header->uid = socket_client->index;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000270
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100271 if (icmp_header->version != BATADV_COMPAT_VERSION) {
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200272 icmp_header->msg_type = BATADV_PARAMETER_PROBLEM;
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100273 icmp_header->version = BATADV_COMPAT_VERSION;
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200274 batadv_socket_add_packet(socket_client, icmp_header,
Sven Eckelmannaf4447f2012-05-12 18:33:59 +0200275 packet_len);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000276 goto free_skb;
277 }
278
Antonio Quartulli8fdd0152014-01-22 00:42:11 +0100279 ether_addr_copy(icmp_header->orig, primary_if->net_dev->dev_addr);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000280
Sven Eckelmann9455e342012-05-12 02:09:37 +0200281 batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000282 goto out;
283
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000284dst_unreach:
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200285 icmp_header->msg_type = BATADV_DESTINATION_UNREACHABLE;
286 batadv_socket_add_packet(socket_client, icmp_header, packet_len);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000287free_skb:
288 kfree_skb(skb);
289out:
Marek Lindner32ae9b22011-04-20 15:40:58 +0200290 if (primary_if)
Sven Eckelmanne5d89252012-05-12 13:48:54 +0200291 batadv_hardif_free_ref(primary_if);
Marek Lindner44524fc2011-02-10 14:33:53 +0000292 if (neigh_node)
Sven Eckelmann7d211ef2012-05-12 02:09:34 +0200293 batadv_neigh_node_free_ref(neigh_node);
Marek Lindner44524fc2011-02-10 14:33:53 +0000294 if (orig_node)
Sven Eckelmann7d211ef2012-05-12 02:09:34 +0200295 batadv_orig_node_free_ref(orig_node);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000296 return len;
297}
298
Sven Eckelmannaf4447f2012-05-12 18:33:59 +0200299static unsigned int batadv_socket_poll(struct file *file, poll_table *wait)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000300{
Sven Eckelmann56303d32012-06-05 22:31:31 +0200301 struct batadv_socket_client *socket_client = file->private_data;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000302
303 poll_wait(file, &socket_client->queue_wait, wait);
304
305 if (socket_client->queue_len > 0)
306 return POLLIN | POLLRDNORM;
307
308 return 0;
309}
310
Sven Eckelmannaf4447f2012-05-12 18:33:59 +0200311static const struct file_operations batadv_fops = {
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000312 .owner = THIS_MODULE,
Sven Eckelmannaf4447f2012-05-12 18:33:59 +0200313 .open = batadv_socket_open,
314 .release = batadv_socket_release,
315 .read = batadv_socket_read,
316 .write = batadv_socket_write,
317 .poll = batadv_socket_poll,
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000318 .llseek = no_llseek,
319};
320
Sven Eckelmann56303d32012-06-05 22:31:31 +0200321int batadv_socket_setup(struct batadv_priv *bat_priv)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000322{
323 struct dentry *d;
324
325 if (!bat_priv->debug_dir)
326 goto err;
327
Sven Eckelmann64346642012-06-03 22:19:12 +0200328 d = debugfs_create_file(BATADV_ICMP_SOCKET, S_IFREG | S_IWUSR | S_IRUSR,
Sven Eckelmannaf4447f2012-05-12 18:33:59 +0200329 bat_priv->debug_dir, bat_priv, &batadv_fops);
Sven Eckelmann5346c352012-05-05 13:27:28 +0200330 if (!d)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000331 goto err;
332
333 return 0;
334
335err:
Sven Eckelmann5346c352012-05-05 13:27:28 +0200336 return -ENOMEM;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000337}
338
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200339/**
Sven Eckelmann34473822015-05-31 10:10:20 +0200340 * batadv_socket_receive_packet - schedule an icmp packet to be sent to
341 * userspace on an icmp socket.
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200342 * @socket_client: the socket this packet belongs to
343 * @icmph: pointer to the header of the icmp packet
344 * @icmp_len: total length of the icmp packet
345 */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200346static void batadv_socket_add_packet(struct batadv_socket_client *socket_client,
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200347 struct batadv_icmp_header *icmph,
Sven Eckelmannaf4447f2012-05-12 18:33:59 +0200348 size_t icmp_len)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000349{
Sven Eckelmann56303d32012-06-05 22:31:31 +0200350 struct batadv_socket_packet *socket_packet;
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200351 size_t len;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000352
Sven Eckelmann704509b2011-05-14 23:14:54 +0200353 socket_packet = kmalloc(sizeof(*socket_packet), GFP_ATOMIC);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000354
355 if (!socket_packet)
356 return;
357
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200358 len = icmp_len;
359 /* check the maximum length before filling the buffer */
360 if (len > sizeof(socket_packet->icmp_packet))
361 len = sizeof(socket_packet->icmp_packet);
362
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000363 INIT_LIST_HEAD(&socket_packet->list);
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200364 memcpy(&socket_packet->icmp_packet, icmph, len);
365 socket_packet->icmp_len = len;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000366
367 spin_lock_bh(&socket_client->lock);
368
369 /* while waiting for the lock the socket_client could have been
Sven Eckelmann9cfc7bd2012-05-12 02:09:43 +0200370 * deleted
371 */
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200372 if (!batadv_socket_client_hash[icmph->uid]) {
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000373 spin_unlock_bh(&socket_client->lock);
374 kfree(socket_packet);
375 return;
376 }
377
378 list_add_tail(&socket_packet->list, &socket_client->queue_list);
379 socket_client->queue_len++;
380
381 if (socket_client->queue_len > 100) {
382 socket_packet = list_first_entry(&socket_client->queue_list,
Sven Eckelmann56303d32012-06-05 22:31:31 +0200383 struct batadv_socket_packet,
384 list);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000385
386 list_del(&socket_packet->list);
387 kfree(socket_packet);
388 socket_client->queue_len--;
389 }
390
391 spin_unlock_bh(&socket_client->lock);
392
393 wake_up(&socket_client->queue_wait);
394}
395
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200396/**
397 * batadv_socket_receive_packet - schedule an icmp packet to be received
398 * locally and sent to userspace.
399 * @icmph: pointer to the header of the icmp packet
400 * @icmp_len: total length of the icmp packet
401 */
402void batadv_socket_receive_packet(struct batadv_icmp_header *icmph,
Sven Eckelmann9039dc72012-05-12 02:09:33 +0200403 size_t icmp_len)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000404{
Sven Eckelmann56303d32012-06-05 22:31:31 +0200405 struct batadv_socket_client *hash;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000406
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200407 hash = batadv_socket_client_hash[icmph->uid];
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000408 if (hash)
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200409 batadv_socket_add_packet(hash, icmph, icmp_len);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000410}