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monitor: Remove netlink monitor interface if created by iwmon

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Send a RTM_DELLINK for the interface in use if it was created by iwmon.
As the main loop needs to be running when sending RTM_DELLINK, add a
timeout function for quitting the main loop.
This commit is contained in:
Patrik Flykt 2014-10-03 13:39:10 +03:00 committed by Denis Kenzior
parent 0b75b71555
commit 1d4ab8de47
1 changed files with 31 additions and 2 deletions
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33
monitor/main.c
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@ -248,6 +248,15 @@ static struct l_netlink *rtm_interface_send_message(struct l_netlink *rtnl,
break;
case RTM_DELLINK:
rta_buf += rta_add(rta_buf, IFLA_IFNAME, ifname_len, ifname);
l_netlink_send(rtnl, RTM_DELLINK, 0, rtmmsg,
rta_buf - (void *)rtmmsg, callback, user_data,
destroy);
break;
case RTM_GETLINK:
l_netlink_send(rtnl, RTM_GETLINK, NLM_F_DUMP, rtmmsg,
rta_buf - (void *)rtmmsg, callback, user_data,
@ -265,6 +274,16 @@ static struct l_netlink *rtm_interface_send_message(struct l_netlink *rtnl,
return rtnl;
}
static struct l_netlink *iwmon_interface_disable(struct iwmon_interface *monitor_interface)
{
if (!monitor_interface->exists)
return rtm_interface_send_message(monitor_interface->rtnl,
monitor_interface->ifname,
RTM_DELLINK, NULL, NULL, NULL);
return monitor_interface->rtnl;
}
static void iwmon_interface_enable_callback(int error, uint16_t type,
const void *data, uint32_t len,
void *user_data)
@ -629,13 +648,22 @@ static int process_pcap(struct pcap *pcap, uint16_t id)
return EXIT_SUCCESS;
}
static void main_loop_quit(struct l_timeout *timeout, void *user_data)
{
l_main_quit();
}
static void signal_handler(struct l_signal *signal, uint32_t signo,
void *user_data)
{
struct iwmon_interface *monitor_interface = user_data;
switch (signo) {
case SIGINT:
case SIGTERM:
l_main_quit();
iwmon_interface_disable(monitor_interface);
l_timeout_create(1, main_loop_quit, NULL, NULL);
break;
}
}
@ -741,7 +769,8 @@ int main(int argc, char *argv[])
sigaddset(&mask, SIGINT);
sigaddset(&mask, SIGTERM);
signal = l_signal_create(&mask, signal_handler, NULL, NULL);
signal = l_signal_create(&mask, signal_handler, &monitor_interface,
NULL);
printf("Wireless monitor ver %s\n", VERSION);