#include <linux/ioport.h> /* request_region(), release_region() */
#include <linux/wanrouter.h> /* WAN router definitions */
#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
+#include <linux/rcupdate.h>
#include <linux/in.h>
#include <asm/io.h> /* phys_to_virt() */
struct in_ifaddr *ifaddr;
struct in_device *in_dev;
+ unsigned long addr = 0;
- if ((in_dev = __in_dev_get(dev)) == NULL){
- return 0;
+ rcu_read_lock();
+ if ((in_dev = __in_dev_get_rcu(dev)) == NULL){
+ goto out;
}
if ((ifaddr = in_dev->ifa_list)== NULL ){
- return 0;
+ goto out;
}
switch (option){
case WAN_LOCAL_IP:
- return ifaddr->ifa_local;
+ addr = ifaddr->ifa_local;
break;
case WAN_POINTOPOINT_IP:
- return ifaddr->ifa_address;
+ addr = ifaddr->ifa_address;
break;
case WAN_NETMASK_IP:
- return ifaddr->ifa_mask;
+ addr = ifaddr->ifa_mask;
break;
case WAN_BROADCAST_IP:
- return ifaddr->ifa_broadcast;
+ addr = ifaddr->ifa_broadcast;
break;
default:
- return 0;
+ break;
}
- return 0;
+out:
+ rcu_read_unlock();
+ return addr;
}
void add_gateway(sdla_t *card, struct net_device *dev)