/***************************************************************************                          signal.c  -  description                             -------------------    begin                : Thu Aug 7 2003    copyright            : (C) 2003 by Luke Klein-Berndt    email                : kleinb@nist.gov ***************************************************************************/#include "signal.h"static struct socket *iw_sock;#ifdef AODV_SIGNALvoid init_iw_sock(void){    int error;    error = sock_create(AF_INET, SOCK_DGRAM, 0, &iw_sock);    if (error < 0)    {        printk(KERN_ERR "Error during creation of socket; terminating, %d\n", error);    }}void close_iw_sock(void){    sock_release(iw_sock);}int set_spy(){    int errno;    int i;    aodv_neigh *tmp_neigh;    aodv_dev *tmp_dev;    struct sockaddr iw_sa[IW_MAX_SPY];    struct iwreq wrq;    #if WIRELESS_EXT > 15    iw_handler handler;    struct iw_request_info info;#endif        mm_segment_t oldfs;    tmp_dev = first_aodv_dev();    while (tmp_dev != NULL)    {#if WIRELESS_EXT > 15				if ( tmp_dev->dev->wireless_handlers )#else	      if ((tmp_dev->dev->get_wireless_stats!=NULL) && (tmp_dev->dev->do_ioctl!=NULL))#endif        {            i = 0;            tmp_neigh = first_aodv_neigh();            while (tmp_neigh != NULL)            {	                if (tmp_dev->dev == tmp_neigh->dev)                {                    if (i < IW_MAX_SPY)                    {                        memcpy((char *) &(iw_sa[i].sa_data), (char *) &(tmp_neigh->hw_addr), sizeof(struct sockaddr));                        i++;                        tmp_neigh->link = 0;                    } else                    {                        tmp_neigh->link = 0;                    }                }                tmp_neigh = tmp_neigh->next;            }            strncpy(wrq.ifr_name, tmp_dev->name, IFNAMSIZ);            wrq.u.data.pointer = (caddr_t) & (iw_sa);            wrq.u.data.length = i;            wrq.u.data.flags = 0;#if WIRELESS_EXT > 15	    info.cmd = SIOCSIWSPY;	    info.flags = 0;	    handler = tmp_dev->dev->wireless_handlers->standard[SIOCSIWSPY - SIOCIWFIRST];			if (handler)			{		    errno = handler(tmp_dev->dev, &info, &(wrq.u),(char *) iw_sa);	       if (errno<0)                printk(KERN_WARNING "AODV: Error with SIOCSIWSPY: %d\n", errno);	    }#else            oldfs = get_fs();            set_fs(KERNEL_DS);            errno = tmp_dev->dev->do_ioctl(tmp_dev->dev, (struct ifreq *) &wrq, SIOCSIWSPY);            set_fs(oldfs);            if (errno < 0)                printk(KERN_WARNING "AODV: Error with SIOCSIWSPY: %d\n", errno);#endif                 }        tmp_dev = tmp_dev->next;    }}void get_wireless_stats(){    int n, i, errno = 0;    char buffer[(sizeof(struct iw_quality) + sizeof(struct sockaddr)) * IW_MAX_SPY];    u_int8_t temp;    struct iwreq wrq;    aodv_neigh *tmp_neigh;    aodv_dev *tmp_dev;#if WIRELESS_EXT > 15        iw_handler handler;		struct iw_request_info info;   #endif			    struct sockaddr hwa[IW_MAX_SPY];    struct iw_quality qual[IW_MAX_SPY];     mm_segment_t oldfs;    tmp_dev = first_aodv_dev();    while (tmp_dev != NULL)    {#if WIRELESS_EXT > 15				if ( tmp_dev->dev->wireless_handlers )#else	      if ((tmp_dev->dev->get_wireless_stats!=NULL) && (tmp_dev->dev->do_ioctl!=NULL))#endif		        {            strncpy(wrq.ifr_name, tmp_dev->name, IFNAMSIZ);            wrq.u.data.pointer = (caddr_t) buffer;            wrq.u.data.length = 0;            wrq.u.data.flags = 0;#if WIRELESS_EXT > 15						info.cmd = SIOCGIWSPY;						info.flags = 0;						handler = tmp_dev->dev->wireless_handlers->standard[SIOCGIWSPY - SIOCIWFIRST];						if (handler)						{	    				errno = handler(tmp_dev->dev, &info, &(wrq.u), buffer);		  	       if (errno<0)								return;				    }#else        oldfs = get_fs();        set_fs(KERNEL_DS);          errno = tmp_dev->dev->do_ioctl(tmp_dev->dev,(struct ifreq * ) &wrq,SIOCGIWSPY );        set_fs(oldfs);           if (errno < 0)                return;#endif	          	    							    	                n = wrq.u.data.length;            memcpy(hwa, buffer, n * sizeof(struct sockaddr));            memcpy(qual, buffer + n * sizeof(struct sockaddr), n * sizeof(struct iw_quality));            for (i = 0; i < n; i++)            {                update_aodv_neigh_link(hwa[i].sa_data, (u_int8_t) qual[i].noise - qual[i].level);//level);// - 0x100);            }        }        tmp_dev = tmp_dev->next;    }}#endif