static void igmp_timer_expire(unsigned long data)
{
struct ip_mc_list *im=(struct ip_mc_list *)data;
struct in_device *in_dev = im->interface;
int err;
im->tm_running=0;
if (IGMP_V1_SEEN(in_dev))
err = igmp_send_report(in_dev->dev, im->multiaddr, IGMP_HOST_MEMBERSHIP_REPORT);
else
err = igmp_send_report(in_dev->dev, im->multiaddr, IGMP_HOST_NEW_MEMBERSHIP_REPORT);
/* Failed. Retry later. */
if (err) {
igmp_start_timer(im, IGMP_Unsolicited_Report_Interval);
return;
}
if (im->unsolicit_count) {
im->unsolicit_count--;
igmp_start_timer(im, IGMP_Unsolicited_Report_Interval);
}
im->reporter = 1;
}
int ip_mc_procinfo(char *buffer, char **start, off_t offset, int length)
{
off_t pos=0, begin=0;
struct ip_mc_list *im;
int len=0;
struct net_device *dev;
len=sprintf(buffer,"Idx\tDevice : Count Querier\tGroup Users Timer\tReporter\n");
read_lock(&dev_base_lock);
for(dev = dev_base; dev; dev = dev->next) {
struct in_device *in_dev = in_dev_get(dev);
char *querier = "NONE";
if (in_dev == NULL)
continue;
querier = IGMP_V1_SEEN(in_dev) ? "V1" : "V2";
len+=sprintf(buffer+len,"%d\t%-10s: %5d %7s\n",
dev->ifindex, dev->name, dev->mc_count, querier);
read_lock(&in_dev->lock);
for (im = in_dev->mc_list; im; im = im->next) {
len+=sprintf(buffer+len,
"\t\t\t\t%08lX %5d %d:%08lX\t\t%d\n",
im->multiaddr, im->users,
im->tm_running, im->timer.expires-jiffies, im->reporter);
pos=begin+len;
if(pos<offset)
{
len=0;
begin=pos;
}
if(pos>offset+length) {
read_unlock(&in_dev->lock);
in_dev_put(in_dev);
goto done;
}
}
read_unlock(&in_dev->lock);
in_dev_put(in_dev);
}
done:
read_unlock(&dev_base_lock);
*start=buffer+(offset-begin);
len-=(offset-begin);
if(len>length)
len=length;
if(len<0)
len=0;
return len;
}
static void igmp_group_dropped(struct ip_mc_list *im)
{
if (im->loaded) {
im->loaded = 0;
ip_mc_filter_del(im->interface, im->multiaddr);
}
#ifdef CONFIG_IP_MULTICAST
if (im->multiaddr == IGMP_ALL_HOSTS)
return;
start_bh_atomic();
igmp_stop_timer(im);
end_bh_atomic();
if (im->reporter && !IGMP_V1_SEEN(im->interface))
igmp_send_report(im->interface->dev, im->multiaddr, IGMP_HOST_LEAVE_MESSAGE);
#endif
}
static void igmp_timer_expire(unsigned long data)
{
struct ip_mc_list *im=(struct ip_mc_list *)data;
struct in_device *in_dev = im->interface;
spin_lock(&im->lock);
im->tm_running=0;
if (im->unsolicit_count) {
im->unsolicit_count--;
igmp_start_timer(im, IGMP_Unsolicited_Report_Interval);
}
im->reporter = 1;
spin_unlock(&im->lock);
if (IGMP_V1_SEEN(in_dev))
igmp_send_report(in_dev->dev, im->multiaddr, IGMP_HOST_MEMBERSHIP_REPORT);
else
igmp_send_report(in_dev->dev, im->multiaddr, IGMP_HOST_NEW_MEMBERSHIP_REPORT);
ip_ma_put(im);
}