From: Roy Marples <roy@marples.name>
Date: Wed, 15 Jan 2020 16:07:27 +0000 (+0000)
Subject: Linux: Support hardware address randomisation
X-Git-Tag: v9.0.0~117
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e2a713f5a88d65bc31e4e5118da11d9528d730a9;p=thirdparty%2Fdhcpcd.git

Linux: Support hardware address randomisation
---

diff --git a/src/if-linux.c b/src/if-linux.c
index d5dfdeda..d42383b5 100644
--- a/src/if-linux.c
+++ b/src/if-linux.c
@@ -433,6 +433,23 @@ if_closesockets_os(struct dhcpcd_ctx *ctx)
 	}
 }
 
+int
+if_setmac(struct interface *ifp, void *mac, uint8_t maclen)
+{
+	struct ifreq ifr = {
+		.ifr_hwaddr.sa_family = ifp->family,
+	};
+
+	if (ifp->hwlen != maclen || maclen > sizeof(ifr.ifr_hwaddr.sa_data)) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	strlcpy(ifr.ifr_name, ifp->name, sizeof(ifr.ifr_name));
+	memcpy(ifr.ifr_hwaddr.sa_data, mac, maclen);
+	return if_ioctl(ifp->ctx, SIOCSIFHWADDR, &ifr, sizeof(ifr));
+}
+
 int
 if_carrier(struct interface *ifp)
 {