/***************************************************************************                          hello.c  -  description                             -------------------    begin                : Wed Aug 13 2003    copyright            : (C) 2003 by Luke Klein-Berndt    email                : kleinb@nist.gov ***************************************************************************/#include "hello.h"extern aodv_route *g_my_route;extern u_int32_t 	g_my_ip;#ifdef LINK_LIMITextern int g_link_limit;#endifrrep * create_hello(){rrep *new_rrep;return new_rrep;}int send_hello(){    rrep *tmp_rrep;    int i;    aodv_dst * tmp_dst;    struct interface_list_entry *tmp_interface;    		if ((tmp_rrep = (rrep *) kmalloc(sizeof(rrep) , GFP_ATOMIC)) == NULL)    {        printk(KERN_WARNING "AODV: Can't allocate new rreq\n");        neigh_read_unlock();        return 0;    }      tmp_rrep->type = RREP_MESSAGE;    tmp_rrep->reserved1 = 0;		    tmp_rrep->src_ip = g_my_route->ip;    tmp_rrep->dst_ip = g_my_route->ip;    tmp_rrep->dst_seq = htonl(g_my_route->seq);    tmp_rrep->lifetime = htonl(MY_ROUTE_TIMEOUT);    local_broadcast(1, tmp_rrep, sizeof(rrep) ); 		kfree (tmp_rrep);    insert_timer(TASK_HELLO, HELLO_INTERVAL, g_my_ip);    update_timer_queue();}int recv_hello(rrep * tmp_rrep, task * tmp_packet){    aodv_route *recv_route;    aodv_neigh *tmp_neigh;        tmp_neigh = find_aodv_neigh(tmp_rrep->dst_ip);    if (tmp_neigh == NULL)    {       tmp_neigh = create_aodv_neigh(tmp_rrep->dst_ip);       if (!tmp_neigh)        {            printk(KERN_WARNING "AODV: Error creating neighbor: %s\n", inet_ntoa(tmp_rrep->dst_ip));            return -1;        }	      memcpy(&(tmp_neigh->hw_addr), &(tmp_packet->src_hw_addr), sizeof(unsigned char) * ETH_ALEN);        tmp_neigh->dev = tmp_packet->dev;        #ifdef AODV_SIGNAL					set_spy();				#endif		    }        delete_timer(tmp_neigh->ip, TASK_NEIGHBOR);    insert_timer(TASK_NEIGHBOR, HELLO_INTERVAL * (1 + ALLOWED_HELLO_LOSS) + 100, tmp_neigh->ip);    update_timer_queue();		tmp_neigh->lifetime = tmp_rrep->lifetime + getcurrtime() + 20;	  update_aodv_neigh(tmp_neigh, tmp_rrep); 	      return 0;}