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(struct net *net, int vifi, int notify)
{
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(dev);
dev_put(dev);
return 0;
}
int vlan_dev_stop(struct net_device *dev)
{
struct net_device *real_dev = VLAN_DEV_INFO(dev)->real_dev;
dev_mc_unsync(real_dev, dev);
if (dev->flags & IFF_ALLMULTI)
dev_set_allmulti(real_dev, -1);
if (dev->flags & IFF_PROMISC)
dev_set_promiscuity(real_dev, -1);
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
dev_unicast_delete(real_dev, dev->dev_addr, dev->addr_len);
return 0;
}
static int mif6_delete(struct net *net, int vifi, struct list_head *head)
{
struct mif_device *v;
struct net_device *dev;
struct inet6_dev *in6_dev;
if (vifi < 0 || vifi >= net->ipv6.maxvif)
return -EADDRNOTAVAIL;
v = &net->ipv6.vif6_table[vifi];
write_lock_bh(&mrt_lock);
dev = v->dev;
v->dev = NULL;
if (!dev) {
write_unlock_bh(&mrt_lock);
return -EADDRNOTAVAIL;
}
#ifdef CONFIG_IPV6_PIMSM_V2
if (vifi == net->ipv6.mroute_reg_vif_num)
net->ipv6.mroute_reg_vif_num = -1;
#endif
if (vifi + 1 == net->ipv6.maxvif) {
int tmp;
for (tmp = vifi - 1; tmp >= 0; tmp--) {
if (MIF_EXISTS(net, tmp))
break;
}
net->ipv6.maxvif = tmp + 1;
}
write_unlock_bh(&mrt_lock);
dev_set_allmulti(dev, -1);
in6_dev = __in6_dev_get(dev);
if (in6_dev)
in6_dev->cnf.mc_forwarding--;
if (v->flags & MIFF_REGISTER)
unregister_netdevice_queue(dev, head);
dev_put(dev);
return 0;
}
static int dsa_slave_close(struct net_device *dev)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct net_device *master = p->parent->dst->master_netdev;
dev_mc_unsync(master, dev);
dev_uc_unsync(master, dev);
if (dev->flags & IFF_ALLMULTI)
dev_set_allmulti(master, -1);
if (dev->flags & IFF_PROMISC)
dev_set_promiscuity(master, -1);
if (compare_ether_addr(dev->dev_addr, master->dev_addr))
dev_uc_del(master, dev->dev_addr);
return 0;
}
static int vlan_dev_stop(struct net_device *dev)
{
struct vlan_dev_info *vlan = vlan_dev_info(dev);
struct net_device *real_dev = vlan->real_dev;
dev_mc_unsync(real_dev, dev);
dev_uc_unsync(real_dev, dev);
if (dev->flags & IFF_ALLMULTI)
dev_set_allmulti(real_dev, -1);
if (dev->flags & IFF_PROMISC)
dev_set_promiscuity(real_dev, -1);
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
dev_uc_del(real_dev, dev->dev_addr);
netif_carrier_off(dev);
return 0;
}
static void packet_dev_mc(struct net_device *dev, struct packet_mclist *i, int what)
{
switch (i->type) {
case PACKET_MR_MULTICAST:
if (what > 0)
dev_mc_add(dev, i->addr, i->alen, 0);
else
dev_mc_delete(dev, i->addr, i->alen, 0);
break;
case PACKET_MR_PROMISC:
dev_set_promiscuity(dev, what);
break;
case PACKET_MR_ALLMULTI:
dev_set_allmulti(dev, what);
break;
default:;
}
}
static int vlan_dev_stop(struct net_device *dev)
{
struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
struct net_device *real_dev = vlan->real_dev;
dev_mc_unsync(real_dev, dev);
dev_uc_unsync(real_dev, dev);
if (dev->flags & IFF_ALLMULTI)
dev_set_allmulti(real_dev, -1);
if (dev->flags & IFF_PROMISC)
dev_set_promiscuity(real_dev, -1);
if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
dev_uc_del(real_dev, dev->dev_addr);
if (!(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
netif_carrier_off(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;
}
static int mif6_delete(int vifi)
{
struct mif_device *v;
struct net_device *dev;
if (vifi < 0 || vifi >= maxvif)
return -EADDRNOTAVAIL;
v = &vif6_table[vifi];
write_lock_bh(&mrt_lock);
dev = v->dev;
v->dev = NULL;
if (!dev) {
write_unlock_bh(&mrt_lock);
return -EADDRNOTAVAIL;
}
#ifdef CONFIG_IPV6_PIMSM_V2
if (vifi == reg_vif_num)
reg_vif_num = -1;
#endif
if (vifi + 1 == maxvif) {
int tmp;
for (tmp = vifi - 1; tmp >= 0; tmp--) {
if (MIF_EXISTS(tmp))
break;
}
maxvif = tmp + 1;
}
write_unlock_bh(&mrt_lock);
dev_set_allmulti(dev, -1);
if (v->flags & MIFF_REGISTER)
unregister_netdevice(dev);
dev_put(dev);
return 0;
}
static int vlan_dev_stop(struct net_device *dev)
{
struct vlan_dev_info *vlan = vlan_dev_info(dev);
struct net_device *real_dev = vlan->real_dev;
if (vlan->flags & VLAN_FLAG_GVRP)
vlan_gvrp_request_leave(dev);
dev_mc_unsync(real_dev, dev);
dev_unicast_unsync(real_dev, dev);
if (dev->flags & IFF_ALLMULTI)
dev_set_allmulti(real_dev, -1);
if (dev->flags & IFF_PROMISC)
dev_set_promiscuity(real_dev, -1);
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
dev_unicast_delete(real_dev, dev->dev_addr, dev->addr_len);
return 0;
}
int vlan_dev_open(struct net_device *dev)
{
struct vlan_dev_info *vlan = VLAN_DEV_INFO(dev);
struct net_device *real_dev = vlan->real_dev;
int err;
if (!(real_dev->flags & IFF_UP))
return -ENETDOWN;
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) {
err = dev_unicast_add(real_dev, dev->dev_addr, ETH_ALEN);
if (err < 0)
return err;
}
memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN);
if (dev->flags & IFF_ALLMULTI)
dev_set_allmulti(real_dev, 1);
if (dev->flags & IFF_PROMISC)
dev_set_promiscuity(real_dev, 1);
return 0;
}
static int dsa_slave_close(struct net_device *dev)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct net_device *master = p->parent->dst->master_netdev;
struct dsa_switch *ds = p->parent;
if (p->phy)
phy_stop(p->phy);
dev_mc_unsync(master, dev);
dev_uc_unsync(master, dev);
if (dev->flags & IFF_ALLMULTI)
dev_set_allmulti(master, -1);
if (dev->flags & IFF_PROMISC)
dev_set_promiscuity(master, -1);
if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
dev_uc_del(master, dev->dev_addr);
if (ds->drv->port_disable)
ds->drv->port_disable(ds, p->port, p->phy);
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;
/* 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 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;
}
static int mif6_add(struct mif6ctl *vifc, int mrtsock)
{
int vifi = vifc->mif6c_mifi;
struct mif_device *v = &vif6_table[vifi];
struct net_device *dev;
/* Is vif busy ? */
if (MIF_EXISTS(vifi))
return -EADDRINUSE;
switch (vifc->mif6c_flags) {
#ifdef CONFIG_IPV6_PIMSM_V2
case MIFF_REGISTER:
/*
* Special Purpose VIF in PIM
* All the packets will be sent to the daemon
*/
if (reg_vif_num >= 0)
return -EADDRINUSE;
dev = ip6mr_reg_vif();
if (!dev)
return -ENOBUFS;
break;
#endif
case 0:
dev = dev_get_by_index(vifc->mif6c_pifi);
if (!dev)
return -EADDRNOTAVAIL;
dev_put(dev);
break;
default:
return -EINVAL;
}
dev_set_allmulti(dev, 1);
/*
* Fill in the VIF structures
*/
v->rate_limit = vifc->vifc_rate_limit;
v->flags = vifc->mif6c_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 & MIFF_REGISTER)
v->link = dev->iflink;
/* And finish update writing critical data */
write_lock_bh(&mrt_lock);
dev_hold(dev);
v->dev = dev;
#ifdef CONFIG_IPV6_PIMSM_V2
if (v->flags & MIFF_REGISTER)
reg_vif_num = vifi;
#endif
if (vifi + 1 > maxvif)
maxvif = vifi + 1;
write_unlock_bh(&mrt_lock);
return 0;
}
/** Taken from Gleb + Lennert's VLAN code, and modified... */
void vlan_dev_set_multicast_list(struct net_device *vlan_dev)
{
struct dev_mc_list *dmi;
struct net_device *real_dev;
int inc;
if (vlan_dev && (vlan_dev->priv_flags & IFF_802_1Q_VLAN)) {
/* Then it's a real vlan device, as far as we can tell.. */
real_dev = VLAN_DEV_INFO(vlan_dev)->real_dev;
/* compare the current promiscuity to the last promisc we had.. */
inc = vlan_dev->promiscuity - VLAN_DEV_INFO(vlan_dev)->old_promiscuity;
if (inc) {
printk(KERN_INFO "%s: dev_set_promiscuity(master, %d)\n",
vlan_dev->name, inc);
dev_set_promiscuity(real_dev, inc); /* found in dev.c */
VLAN_DEV_INFO(vlan_dev)->old_promiscuity = vlan_dev->promiscuity;
}
inc = vlan_dev->allmulti - VLAN_DEV_INFO(vlan_dev)->old_allmulti;
if (inc) {
printk(KERN_INFO "%s: dev_set_allmulti(master, %d)\n",
vlan_dev->name, inc);
dev_set_allmulti(real_dev, inc); /* dev.c */
VLAN_DEV_INFO(vlan_dev)->old_allmulti = vlan_dev->allmulti;
}
/* looking for addresses to add to master's list */
for (dmi = vlan_dev->mc_list; dmi != NULL; dmi = dmi->next) {
if (vlan_should_add_mc(dmi, VLAN_DEV_INFO(vlan_dev)->old_mc_list)) {
dev_mc_add(real_dev, dmi->dmi_addr, dmi->dmi_addrlen, 0);
printk(KERN_DEBUG "%s: add %.2x:%.2x:%.2x:%.2x:%.2x:%.2x mcast address to master interface\n",
vlan_dev->name,
dmi->dmi_addr[0],
dmi->dmi_addr[1],
dmi->dmi_addr[2],
dmi->dmi_addr[3],
dmi->dmi_addr[4],
dmi->dmi_addr[5]);
}
}
/* looking for addresses to delete from master's list */
for (dmi = VLAN_DEV_INFO(vlan_dev)->old_mc_list; dmi != NULL; dmi = dmi->next) {
if (vlan_should_add_mc(dmi, vlan_dev->mc_list)) {
/* if we think we should add it to the new list, then we should really
* delete it from the real list on the underlying device.
*/
dev_mc_delete(real_dev, dmi->dmi_addr, dmi->dmi_addrlen, 0);
printk(KERN_DEBUG "%s: del %.2x:%.2x:%.2x:%.2x:%.2x:%.2x mcast address from master interface\n",
vlan_dev->name,
dmi->dmi_addr[0],
dmi->dmi_addr[1],
dmi->dmi_addr[2],
dmi->dmi_addr[3],
dmi->dmi_addr[4],
dmi->dmi_addr[5]);
}
}
/* save multicast list */
vlan_copy_mc_list(vlan_dev->mc_list, VLAN_DEV_INFO(vlan_dev));
}
}
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;
}
