From 0fa2b3e5dd91e02ee06f53a4504e244177c4ca3f Mon Sep 17 00:00:00 2001
From: vikas sukhija <vikas.sukhija@mediatek.com>
Date: Fri, 25 Mar 2022 10:12:57 +0530
Subject: [PATCH] [WCNCR00257153][Add support for hostapd-2.10]

[Description]
Avoid driver crash if interface mac address is empty
Needed for SINGLE BAND SUPPORT IN DBDC

[Release-log]

CR-Id: WCNCR00257153
Change-Id: I8b7756d23a6c795345fd01a5d480b84a4754fed5
---

diff --git a/src/drivers/linux_ioctl.c b/src/drivers/linux_ioctl.c
index 7edb9df..0db6634 100644
--- a/src/drivers/linux_ioctl.c
+++ b/src/drivers/linux_ioctl.c
@@ -81,6 +81,7 @@
 int linux_get_ifhwaddr(int sock, const char *ifname, u8 *addr)
 {
 	struct ifreq ifr;
+	const unsigned char empty[ETH_ALEN] = { 0, };
 
 	os_memset(&ifr, 0, sizeof(ifr));
 	os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
@@ -95,6 +96,12 @@
 			   ifname, ifr.ifr_hwaddr.sa_family);
 		return -1;
 	}
+
+	if (os_memcmp(ifr.ifr_hwaddr.sa_data, empty, ETH_ALEN) == 0) {
+		wpa_printf(MSG_ERROR, "%s: MAC Adress is Empty", ifname);
+		return -1;
+	}
+
 	os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
 
 	return 0;