[PATCH]: madwifi filter netlink mesages

[Gunter Burchardt]

Hello

This patch filters netlink messages from madwifi driver. Only messages
from the right interface will pass.

regards
gunter
-------------- next part --------------
diff -Nur hostap.old/hostapd/driver_madwifi.c hostap/hostapd/driver_madwifi.c
--- hostap.old/hostapd/driver_madwifi.c	2004-09-21 05:37:27.000000000 +0200
+++ hostap/hostapd/driver_madwifi.c	2004-10-08 11:49:47.000000000 +0200
@@ -48,6 +48,7 @@
 	struct hostapd_data *hapd;		/* back pointer */
 
 	char	iface[IFNAMSIZ + 1];
+	int	ifindex;
 	struct l2_packet_data *sock_xmit;	/* raw packet xmit socket */
 	struct l2_packet_data *sock_recv;	/* raw packet recv socket */
 	int	ioctl_sock;			/* socket for ioctl() use */
@@ -706,8 +707,8 @@
 
 	ifi = NLMSG_DATA(h);
 
-	/* TODO: use ifi->ifi_index to filter out wireless events from other
-	 * interfaces */
+	if (ifi->ifi_index != drv->ifindex)
+		return; 
 
 	nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 
@@ -886,6 +887,7 @@
 madwifi_driver_init(struct hostapd_data *hapd)
 {
 	struct madwifi_driver_data *drv;
+	struct ifreq ifr;
 
 	drv = malloc(sizeof(struct madwifi_driver_data));
 	if (drv == NULL) {
@@ -903,6 +905,14 @@
 	}
 	memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
 
+	memset(&ifr, 0, sizeof(ifr));
+	snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%s", drv->iface);
+	if (ioctl(drv->ioctl_sock, SIOCGIFINDEX, &ifr) != 0) {
+		perror("ioctl(SIOCGIFINDEX)");
+		return -1;
+	}
+	drv->ifindex = ifr.ifr_ifindex;
+
 	drv->sock_xmit = l2_packet_init(drv->iface, ETH_P_EAPOL,
 				handle_read, drv);
 	if (drv->sock_xmit == NULL)