5 * Copyright (C) 2007-2008 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
28 #include <sys/ioctl.h>
29 #include <sys/socket.h>
31 #include <linux/netlink.h>
32 #include <linux/rtnetlink.h>
34 #include <connman/plugin.h>
35 #include <connman/driver.h>
36 #include <connman/log.h>
38 struct ethernet_data {
43 static GStaticMutex ethernet_mutex = G_STATIC_MUTEX_INIT;
44 static GSList *ethernet_list = NULL;
46 static void create_element(struct connman_element *parent,
47 enum connman_element_type type)
49 struct connman_element *element;
51 DBG("parent %p name %s", parent, parent->name);
53 element = connman_element_create(NULL);
58 element->index = parent->index;
60 connman_element_register(element, parent);
63 static void rtnl_link(struct nlmsghdr *hdr, const char *type)
66 struct ifinfomsg *msg;
69 msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
70 bytes = IFLA_PAYLOAD(hdr);
72 DBG("%s ifi_index %d ifi_flags 0x%04x",
73 type, msg->ifi_index, msg->ifi_flags);
75 g_static_mutex_lock(ðernet_mutex);
77 for (list = ethernet_list; list; list = list->next) {
78 struct connman_element *element = list->data;
79 struct ethernet_data *ethernet;
81 ethernet = connman_element_get_data(element);
85 if (ethernet->index != msg->ifi_index)
88 if ((ethernet->flags & IFF_RUNNING) ==
89 (msg->ifi_flags & IFF_RUNNING))
92 ethernet->flags = msg->ifi_flags;
94 if (ethernet->flags & IFF_RUNNING) {
97 create_element(element, CONNMAN_ELEMENT_TYPE_DHCP);
98 create_element(element, CONNMAN_ELEMENT_TYPE_ZEROCONF);
102 connman_element_unregister_children(element);
106 g_static_mutex_unlock(ðernet_mutex);
109 static gboolean rtnl_event(GIOChannel *chan, GIOCondition cond, gpointer data)
111 unsigned char buf[1024];
116 if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
119 memset(buf, 0, sizeof(buf));
121 err = g_io_channel_read(chan, (gchar *) buf, sizeof(buf), &len);
123 if (err == G_IO_ERROR_AGAIN)
128 DBG("buf %p len %zd", buf, len);
131 struct nlmsghdr *hdr = ptr;
132 struct nlmsgerr *err;
134 if (!NLMSG_OK(hdr, len))
137 DBG("len %d type %d flags 0x%04x seq %d",
138 hdr->nlmsg_len, hdr->nlmsg_type,
139 hdr->nlmsg_flags, hdr->nlmsg_seq);
141 switch (hdr->nlmsg_type) {
143 err = NLMSG_DATA(hdr);
144 DBG("ERROR %d (%s)", -err->error,
145 strerror(-err->error));
149 rtnl_link(hdr, "NEWLINK");
153 rtnl_link(hdr, "DELLINK");
157 len -= hdr->nlmsg_len;
158 ptr += hdr->nlmsg_len;
164 static GIOChannel *channel;
166 static int rtnl_request(void)
173 struct sockaddr_nl addr;
178 memset(&req, 0, sizeof(req));
179 req.hdr.nlmsg_len = sizeof(req.hdr) + sizeof(req.msg);
180 req.hdr.nlmsg_type = RTM_GETLINK;
181 req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
182 req.hdr.nlmsg_pid = 0;
183 req.hdr.nlmsg_seq = 42;
184 req.msg.rtgen_family = AF_INET;
186 sk = g_io_channel_unix_get_fd(channel);
188 memset(&addr, 0, sizeof(addr));
189 addr.nl_family = AF_NETLINK;
191 return sendto(sk, &req, sizeof(req), 0,
192 (struct sockaddr *) &addr, sizeof(addr));
195 static int iface_up(struct ethernet_data *ethernet)
200 DBG("index %d flags %d", ethernet->index, ethernet->flags);
202 sk = socket(PF_INET, SOCK_DGRAM, 0);
206 memset(&ifr, 0, sizeof(ifr));
207 ifr.ifr_ifindex = ethernet->index;
209 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
214 if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
219 if (ifr.ifr_flags & IFF_UP) {
224 ifr.ifr_flags |= IFF_UP;
226 if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0) {
239 static int iface_down(struct ethernet_data *ethernet)
244 DBG("index %d flags %d", ethernet->index, ethernet->flags);
246 sk = socket(PF_INET, SOCK_DGRAM, 0);
250 memset(&ifr, 0, sizeof(ifr));
251 ifr.ifr_ifindex = ethernet->index;
253 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
258 if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
263 if (!(ifr.ifr_flags & IFF_UP)) {
268 ifr.ifr_flags &= ~IFF_UP;
270 if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0)
281 static int ethernet_probe(struct connman_element *element)
283 struct ethernet_data *ethernet;
285 DBG("element %p name %s", element, element->name);
287 ethernet = g_try_new0(struct ethernet_data, 1);
288 if (ethernet == NULL)
291 g_static_mutex_lock(ðernet_mutex);
292 ethernet_list = g_slist_append(ethernet_list, element);
293 g_static_mutex_unlock(ðernet_mutex);
295 connman_element_set_data(element, ethernet);
297 ethernet->index = element->index;
306 static void ethernet_remove(struct connman_element *element)
308 struct ethernet_data *ethernet = connman_element_get_data(element);
310 DBG("element %p name %s", element, element->name);
312 connman_element_set_data(element, NULL);
314 iface_down(ethernet);
316 g_static_mutex_lock(ðernet_mutex);
317 ethernet_list = g_slist_remove(ethernet_list, element);
318 g_static_mutex_unlock(ðernet_mutex);
323 static struct connman_driver ethernet_driver = {
325 .type = CONNMAN_ELEMENT_TYPE_DEVICE,
326 .subtype = CONNMAN_ELEMENT_SUBTYPE_ETHERNET,
327 .probe = ethernet_probe,
328 .remove = ethernet_remove,
331 static int rtnl_init(void)
333 struct sockaddr_nl addr;
338 sk = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
342 memset(&addr, 0, sizeof(addr));
343 addr.nl_family = AF_NETLINK;
344 addr.nl_groups = RTMGRP_LINK;
346 if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
352 channel = g_io_channel_unix_new(sk);
353 g_io_channel_set_close_on_unref(channel, TRUE);
355 g_io_add_watch(channel, G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
361 static void rtnl_cleanup(void)
365 g_io_channel_shutdown(channel, TRUE, NULL);
366 g_io_channel_unref(channel);
369 static int ethernet_init(void)
377 err = connman_driver_register(ðernet_driver);
386 static void ethernet_exit(void)
388 connman_driver_unregister(ðernet_driver);
393 CONNMAN_PLUGIN_DEFINE("ethernet", "Ethernet interface plugin", VERSION,
394 ethernet_init, ethernet_exit)