4 * 2004-2005 Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/moduleparam.h>
25 #include <linux/skbuff.h>
26 #include <linux/timer.h>
28 #include <linux/connector.h>
30 static struct cb_id cn_test_id = { 0x123, 0x456 };
31 static char cn_test_name[] = "cn_test";
32 static struct sock *nls;
33 static struct timer_list cn_test_timer;
35 void cn_test_callback(void *data)
37 struct cn_msg *msg = (struct cn_msg *)data;
39 printk("%s: %lu: idx=%x, val=%x, seq=%u, ack=%u, len=%d: %s.\n",
40 __func__, jiffies, msg->id.idx, msg->id.val,
41 msg->seq, msg->ack, msg->len, (char *)msg->data);
44 static int cn_test_want_notify(void)
46 struct cn_ctl_msg *ctl;
47 struct cn_notify_req *req;
48 struct cn_msg *msg = NULL;
54 size0 = sizeof(*msg) + sizeof(*ctl) + 3 * sizeof(*req);
56 size = NLMSG_SPACE(size0);
58 skb = alloc_skb(size, GFP_ATOMIC);
60 printk(KERN_ERR "Failed to allocate new skb with size=%u.\n",
66 nlh = NLMSG_PUT(skb, 0, 0x123, NLMSG_DONE, size - sizeof(*nlh));
68 msg = (struct cn_msg *)NLMSG_DATA(nlh);
70 memset(msg, 0, size0);
76 msg->len = size0 - sizeof(*msg);
78 ctl = (struct cn_ctl_msg *)(msg + 1);
80 ctl->idx_notify_num = 1;
81 ctl->val_notify_num = 2;
83 ctl->len = msg->len - sizeof(*ctl);
85 req = (struct cn_notify_req *)(ctl + 1);
90 req->first = cn_test_id.idx;
97 req->first = cn_test_id.val;
104 req->first = cn_test_id.val + 20;
107 NETLINK_CB(skb).dst_group = ctl->group;
108 //netlink_broadcast(nls, skb, 0, ctl->group, GFP_ATOMIC);
109 netlink_unicast(nls, skb, 0, 0);
111 printk(KERN_INFO "Request was sent. Group=0x%x.\n", ctl->group);
116 printk(KERN_ERR "Failed to send %u.%u\n", msg->seq, msg->ack);
121 static u32 cn_test_timer_counter;
122 static void cn_test_timer_func(unsigned long __data)
127 m = kzalloc(sizeof(*m) + sizeof(data), GFP_ATOMIC);
130 memcpy(&m->id, &cn_test_id, sizeof(m->id));
131 m->seq = cn_test_timer_counter;
132 m->len = sizeof(data);
135 scnprintf(data, sizeof(data), "counter = %u",
136 cn_test_timer_counter) + 1;
138 memcpy(m + 1, data, m->len);
140 cn_netlink_send(m, 0, gfp_any());
144 cn_test_timer_counter++;
146 mod_timer(&cn_test_timer, jiffies + HZ);
149 static int cn_test_init(void)
153 err = cn_add_callback(&cn_test_id, cn_test_name, cn_test_callback);
157 err = cn_add_callback(&cn_test_id, cn_test_name, cn_test_callback);
159 cn_del_callback(&cn_test_id);
163 init_timer(&cn_test_timer);
164 cn_test_timer.function = cn_test_timer_func;
165 cn_test_timer.expires = jiffies + HZ;
166 cn_test_timer.data = 0;
167 add_timer(&cn_test_timer);
172 if (nls && nls->sk_socket)
173 sock_release(nls->sk_socket);
178 static void cn_test_fini(void)
180 del_timer_sync(&cn_test_timer);
181 cn_del_callback(&cn_test_id);
183 cn_del_callback(&cn_test_id);
184 if (nls && nls->sk_socket)
185 sock_release(nls->sk_socket);
188 module_init(cn_test_init);
189 module_exit(cn_test_fini);
191 MODULE_LICENSE("GPL");
192 MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
193 MODULE_DESCRIPTION("Connector's test module");