Implement setting hardware address
Bug: 156784343
Test: manual
Change-Id: I6a533ab15bb93db26261f826bb8e7d8f12824d62
diff --git a/automotive/can/1.0/default/libnetdevice/include/libnetdevice/libnetdevice.h b/automotive/can/1.0/default/libnetdevice/include/libnetdevice/libnetdevice.h
index c8e6f75..037618a 100644
--- a/automotive/can/1.0/default/libnetdevice/include/libnetdevice/libnetdevice.h
+++ b/automotive/can/1.0/default/libnetdevice/include/libnetdevice/libnetdevice.h
@@ -104,6 +104,14 @@
*/
std::optional<hwaddr_t> getHwAddr(const std::string& ifname);
+/**
+ * Changes interface's hardware address.
+ *
+ * \param ifname Interface name
+ * \param hwaddr New hardware address to set
+ */
+bool setHwAddr(const std::string& ifname, hwaddr_t hwaddr);
+
} // namespace android::netdevice
bool operator==(const android::netdevice::hwaddr_t lhs, const unsigned char rhs[ETH_ALEN]);
diff --git a/automotive/can/1.0/default/libnetdevice/libnetdevice.cpp b/automotive/can/1.0/default/libnetdevice/libnetdevice.cpp
index a16dd34..efbd0bb 100644
--- a/automotive/can/1.0/default/libnetdevice/libnetdevice.cpp
+++ b/automotive/can/1.0/default/libnetdevice/libnetdevice.cpp
@@ -90,6 +90,16 @@
return hwaddr;
}
+bool setHwAddr(const std::string& ifname, hwaddr_t hwaddr) {
+ auto ifr = ifreqs::fromName(ifname);
+
+ // fetch sa_family
+ if (!ifreqs::send(SIOCGIFHWADDR, ifr)) return false;
+
+ memcpy(ifr.ifr_hwaddr.sa_data, hwaddr.data(), hwaddr.size());
+ return ifreqs::send(SIOCSIFHWADDR, ifr);
+}
+
} // namespace android::netdevice
bool operator==(const android::netdevice::hwaddr_t lhs, const unsigned char rhs[ETH_ALEN]) {