void ip_mc_inc_group(struct in_device *in_dev, u32 addr)
{
struct ip_mc_list *i, *im;
im = (struct ip_mc_list *)kmalloc(sizeof(*im), GFP_KERNEL);
for (i=in_dev->mc_list; i; i=i->next) {
if (i->multiaddr == addr) {
i->users++;
if (im)
kfree(im);
return;
}
}
if (!im)
return;
im->users=1;
im->interface=in_dev;
im->multiaddr=addr;
#ifdef CONFIG_IP_MULTICAST
im->tm_running=0;
init_timer(&im->timer);
im->timer.data=(unsigned long)im;
im->timer.function=&igmp_timer_expire;
im->unsolicit_count = IGMP_Unsolicited_Report_Count;
im->reporter = 0;
im->loaded = 0;
#endif
im->next=in_dev->mc_list;
in_dev->mc_list=im;
igmp_group_added(im);
if (in_dev->dev->flags & IFF_UP)
ip_rt_multicast_event(in_dev);
return;
}
static int vif_delete(struct net *net, int vifi, int notify,
struct list_head *head)
{
struct vif_device *v;
struct net_device *dev;
struct in_device *in_dev;
if (vifi < 0 || vifi >= net->ipv4.maxvif)
return -EADDRNOTAVAIL;
v = &net->ipv4.vif_table[vifi];
write_lock_bh(&mrt_lock);
dev = v->dev;
v->dev = NULL;
if (!dev) {
write_unlock_bh(&mrt_lock);
return -EADDRNOTAVAIL;
}
#ifdef CONFIG_IP_PIMSM
if (vifi == net->ipv4.mroute_reg_vif_num)
net->ipv4.mroute_reg_vif_num = -1;
#endif
if (vifi+1 == net->ipv4.maxvif) {
int tmp;
for (tmp=vifi-1; tmp>=0; tmp--) {
if (VIF_EXISTS(net, tmp))
break;
}
net->ipv4.maxvif = tmp+1;
}
write_unlock_bh(&mrt_lock);
dev_set_allmulti(dev, -1);
if ((in_dev = __in_dev_get_rtnl(dev)) != NULL) {
IPV4_DEVCONF(in_dev->cnf, MC_FORWARDING)--;
ip_rt_multicast_event(in_dev);
}
if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER) && !notify)
unregister_netdevice_queue(dev, head);
dev_put(dev);
return 0;
}
static int vif_delete(int vifi)
{
struct vif_device *v;
struct net_device *dev;
struct in_device *in_dev;
if (vifi < 0 || vifi >= maxvif)
return -EADDRNOTAVAIL;
v = &vif_table[vifi];
write_lock_bh(&mrt_lock);
dev = v->dev;
v->dev = NULL;
if (!dev) {
write_unlock_bh(&mrt_lock);
return -EADDRNOTAVAIL;
}
#ifdef CONFIG_IP_PIMSM
if (vifi == reg_vif_num)
reg_vif_num = -1;
#endif
if (vifi+1 == maxvif) {
int tmp;
for (tmp=vifi-1; tmp>=0; tmp--) {
if (VIF_EXISTS(tmp))
break;
}
maxvif = tmp+1;
}
write_unlock_bh(&mrt_lock);
dev_set_allmulti(dev, -1);
if ((in_dev = __in_dev_get_rtnl(dev)) != NULL) {
in_dev->cnf.mc_forwarding--;
ip_rt_multicast_event(in_dev);
}
if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER))
unregister_netdevice(dev);
dev_put(dev);
return 0;
}
static int vif_delete(int vifi)
{
struct vif_device *v;
struct device *dev;
struct in_device *in_dev;
if (vifi < 0 || vifi >= maxvif || !(vifc_map&(1<<vifi)))
return -EADDRNOTAVAIL;
v = &vif_table[vifi];
dev = v->dev;
v->dev = NULL;
vifc_map &= ~(1<<vifi);
if ((in_dev = dev->ip_ptr) != NULL)
in_dev->cnf.mc_forwarding = 0;
dev_set_allmulti(dev, -1);
ip_rt_multicast_event(in_dev);
if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER)) {
#ifdef CONFIG_IP_PIMSM
if (vifi == reg_vif_num) {
reg_vif_num = -1;
reg_dev = NULL;
}
#endif
unregister_netdevice(dev);
if (v->flags&VIFF_REGISTER)
kfree(dev);
}
if (vifi+1 == maxvif) {
int tmp;
for (tmp=vifi-1; tmp>=0; tmp--) {
if (vifc_map&(1<<tmp))
break;
}
maxvif = tmp+1;
}
return 0;
}
void ip_mc_inc_group(struct in_device *in_dev, u32 addr)
{
struct ip_mc_list *im;
ASSERT_RTNL();
for (im=in_dev->mc_list; im; im=im->next) {
if (im->multiaddr == addr) {
im->users++;
goto out;
}
}
im = (struct ip_mc_list *)kmalloc(sizeof(*im), GFP_KERNEL);
if (!im)
goto out;
im->users=1;
im->interface=in_dev;
in_dev_hold(in_dev);
im->multiaddr=addr;
atomic_set(&im->refcnt, 1);
spin_lock_init(&im->lock);
#ifdef CONFIG_IP_MULTICAST
im->tm_running=0;
init_timer(&im->timer);
im->timer.data=(unsigned long)im;
im->timer.function=&igmp_timer_expire;
im->unsolicit_count = IGMP_Unsolicited_Report_Count;
im->reporter = 0;
#endif
im->loaded = 0;
write_lock_bh(&in_dev->lock);
im->next=in_dev->mc_list;
in_dev->mc_list=im;
write_unlock_bh(&in_dev->lock);
igmp_group_added(im);
if (in_dev->dev->flags & IFF_UP)
ip_rt_multicast_event(in_dev);
out:
return;
}
int ip_mc_dec_group(struct in_device *in_dev, u32 addr)
{
struct ip_mc_list *i, **ip;
for (ip=&in_dev->mc_list; (i=*ip)!=NULL; ip=&i->next) {
if (i->multiaddr==addr) {
if (--i->users == 0) {
*ip = i->next;
synchronize_bh();
igmp_group_dropped(i);
if (in_dev->dev->flags & IFF_UP)
ip_rt_multicast_event(in_dev);
kfree_s(i, sizeof(*i));
}
return 0;
}
}
return -ESRCH;
}
void ip_mc_dec_group(struct in_device *in_dev, u32 addr)
{
struct ip_mc_list *i, **ip;
ASSERT_RTNL();
for (ip=&in_dev->mc_list; (i=*ip)!=NULL; ip=&i->next) {
if (i->multiaddr==addr) {
if (--i->users == 0) {
write_lock_bh(&in_dev->lock);
*ip = i->next;
write_unlock_bh(&in_dev->lock);
igmp_group_dropped(i);
if (in_dev->dev->flags & IFF_UP)
ip_rt_multicast_event(in_dev);
ip_ma_put(i);
return;
}
break;
}
}
}
static int vif_add(struct vifctl *vifc, int mrtsock)
{
int vifi = vifc->vifc_vifi;
struct vif_device *v = &vif_table[vifi];
struct net_device *dev;
struct in_device *in_dev;
/* Is vif busy ? */
if (VIF_EXISTS(vifi))
return -EADDRINUSE;
switch (vifc->vifc_flags) {
#ifdef CONFIG_IP_PIMSM
case VIFF_REGISTER:
/*
* Special Purpose VIF in PIM
* All the packets will be sent to the daemon
*/
if (reg_vif_num >= 0)
return -EADDRINUSE;
dev = ipmr_reg_vif();
if (!dev)
return -ENOBUFS;
break;
#endif
case VIFF_TUNNEL:
dev = ipmr_new_tunnel(vifc);
if (!dev)
return -ENOBUFS;
break;
case 0:
dev=ip_dev_find(vifc->vifc_lcl_addr.s_addr);
if (!dev)
return -EADDRNOTAVAIL;
__dev_put(dev);
break;
default:
return -EINVAL;
}
if ((in_dev = __in_dev_get_rtnl(dev)) == NULL)
return -EADDRNOTAVAIL;
in_dev->cnf.mc_forwarding++;
dev_set_allmulti(dev, +1);
ip_rt_multicast_event(in_dev);
/*
* Fill in the VIF structures
*/
v->rate_limit=vifc->vifc_rate_limit;
v->local=vifc->vifc_lcl_addr.s_addr;
v->remote=vifc->vifc_rmt_addr.s_addr;
v->flags=vifc->vifc_flags;
if (!mrtsock)
v->flags |= VIFF_STATIC;
v->threshold=vifc->vifc_threshold;
v->bytes_in = 0;
v->bytes_out = 0;
v->pkt_in = 0;
v->pkt_out = 0;
v->link = dev->ifindex;
if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER))
v->link = dev->iflink;
/* And finish update writing critical data */
write_lock_bh(&mrt_lock);
dev_hold(dev);
v->dev=dev;
#ifdef CONFIG_IP_PIMSM
if (v->flags&VIFF_REGISTER)
reg_vif_num = vifi;
#endif
if (vifi+1 > maxvif)
maxvif = vifi+1;
write_unlock_bh(&mrt_lock);
return 0;
}
static int vif_add(struct net *net, struct vifctl *vifc, int mrtsock)
{
int vifi = vifc->vifc_vifi;
struct vif_device *v = &net->ipv4.vif_table[vifi];
struct net_device *dev;
struct in_device *in_dev;
int err;
/* Is vif busy ? */
if (VIF_EXISTS(net, vifi))
return -EADDRINUSE;
switch (vifc->vifc_flags) {
#ifdef CONFIG_IP_PIMSM
case VIFF_REGISTER:
/*
* Special Purpose VIF in PIM
* All the packets will be sent to the daemon
*/
if (net->ipv4.mroute_reg_vif_num >= 0)
return -EADDRINUSE;
dev = ipmr_reg_vif(net);
if (!dev)
return -ENOBUFS;
err = dev_set_allmulti(dev, 1);
if (err) {
unregister_netdevice(dev);
dev_put(dev);
return err;
}
break;
#endif
case VIFF_TUNNEL:
dev = ipmr_new_tunnel(net, vifc);
if (!dev)
return -ENOBUFS;
err = dev_set_allmulti(dev, 1);
if (err) {
ipmr_del_tunnel(dev, vifc);
dev_put(dev);
return err;
}
break;
case VIFF_USE_IFINDEX:
case 0:
if (vifc->vifc_flags == VIFF_USE_IFINDEX) {
dev = dev_get_by_index(net, vifc->vifc_lcl_ifindex);
if (dev && dev->ip_ptr == NULL) {
dev_put(dev);
return -EADDRNOTAVAIL;
}
} else
dev = ip_dev_find(net, vifc->vifc_lcl_addr.s_addr);
if (!dev)
return -EADDRNOTAVAIL;
err = dev_set_allmulti(dev, 1);
if (err) {
dev_put(dev);
return err;
}
break;
default:
return -EINVAL;
}
if ((in_dev = __in_dev_get_rtnl(dev)) == NULL) {
dev_put(dev);
return -EADDRNOTAVAIL;
}
IPV4_DEVCONF(in_dev->cnf, MC_FORWARDING)++;
ip_rt_multicast_event(in_dev);
/*
* Fill in the VIF structures
*/
v->rate_limit = vifc->vifc_rate_limit;
v->local = vifc->vifc_lcl_addr.s_addr;
v->remote = vifc->vifc_rmt_addr.s_addr;
v->flags = vifc->vifc_flags;
if (!mrtsock)
v->flags |= VIFF_STATIC;
v->threshold = vifc->vifc_threshold;
v->bytes_in = 0;
v->bytes_out = 0;
v->pkt_in = 0;
v->pkt_out = 0;
v->link = dev->ifindex;
if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER))
v->link = dev->iflink;
/* And finish update writing critical data */
write_lock_bh(&mrt_lock);
v->dev = dev;
#ifdef CONFIG_IP_PIMSM
if (v->flags&VIFF_REGISTER)
net->ipv4.mroute_reg_vif_num = vifi;
#endif
if (vifi+1 > net->ipv4.maxvif)
net->ipv4.maxvif = vifi+1;
write_unlock_bh(&mrt_lock);
return 0;
}
static int vif_add(struct vifctl *vifc, int mrtsock)
{
int vifi = vifc->vifc_vifi;
struct vif_device *v = &vif_table[vifi];
struct net_device *dev;
struct in_device *in_dev;
/*[Santosh: to add "ppp" interface into VIF table]*/
#if defined (CONFIG_IFX_IGMP_PROXY) || defined (CONFIG_IFX_IGMP_PROXY_MODULE)
struct in_device *ip;
struct in_ifaddr *in;
__u32 addr;
dev=ip_dev_find(vifc->vifc_lcl_addr.s_addr);
if (dev)
__dev_put(dev);
if (!dev){
addr = vifc->vifc_lcl_addr.s_addr;
for(dev = dev_base; dev; dev = dev->next){
if (dev == NULL)
continue;
if (strncmp (dev->name,"ppp",3) != 0)
continue;
ip = dev->ip_ptr;
if( (ip == NULL) || ((in = ip->ifa_list) == NULL ))
{
DBPRINT ("vif_add: Device: %s not assigned IP address\n",dev->name);
}
if (( in->ifa_address == addr ) &&
(strncmp (dev->name,"ppp",3) == 0))
{
break;
}
}
} // if (!dev)
#endif
/* Is vif busy ? */
if (VIF_EXISTS(vifi))
return -EADDRINUSE;
switch (vifc->vifc_flags) {
#ifdef CONFIG_IP_PIMSM
case VIFF_REGISTER:
/*
* Special Purpose VIF in PIM
* All the packets will be sent to the daemon
*/
if (reg_vif_num >= 0)
return -EADDRINUSE;
dev = ipmr_reg_vif(vifc);
if (!dev)
return -ENOBUFS;
break;
#endif
case VIFF_TUNNEL:
dev = ipmr_new_tunnel(vifc);
if (!dev)
return -ENOBUFS;
break;
case 0:
/*[Santosh: to add "ppp" interface into VIF table]*/
#if defined (CONFIG_IFX_IGMP_PROXY) || defined (CONFIG_IFX_IGMP_PROXY_MODULE)
if (strncmp (dev->name, "ppp",3) == 0)
{
break;
}
#endif
dev=ip_dev_find(vifc->vifc_lcl_addr.s_addr);
if (!dev)
return -EADDRNOTAVAIL;
__dev_put(dev);
break;
default:
return -EINVAL;
}
if ((in_dev = __in_dev_get(dev)) == NULL)
return -EADDRNOTAVAIL;
in_dev->cnf.mc_forwarding++;
dev_set_allmulti(dev, +1);
ip_rt_multicast_event(in_dev);
/*
* Fill in the VIF structures
*/
v->rate_limit=vifc->vifc_rate_limit;
v->local=vifc->vifc_lcl_addr.s_addr;
v->remote=vifc->vifc_rmt_addr.s_addr;
v->flags=vifc->vifc_flags;
if (!mrtsock)
v->flags |= VIFF_STATIC;
v->threshold=vifc->vifc_threshold;
v->bytes_in = 0;
v->bytes_out = 0;
v->pkt_in = 0;
v->pkt_out = 0;
v->link = dev->ifindex;
if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER))
v->link = dev->iflink;
/* And finish update writing critical data */
write_lock_bh(&mrt_lock);
dev_hold(dev);
v->dev=dev;
#ifdef CONFIG_IP_PIMSM
if (v->flags&VIFF_REGISTER)
reg_vif_num = vifi;
#endif
if (vifi+1 > maxvif)
maxvif = vifi+1;
write_unlock_bh(&mrt_lock);
return 0;
}
