@@ -90,6 +90,7 @@
#define ETH_P_TDLS 0x890D /* TDLS */
#define ETH_P_FIP 0x8914 /* FCoE Initialization Protocol */
#define ETH_P_80221 0x8917 /* IEEE 802.21 Media Independent Handover Protocol */
+#define ETH_P_LOOPBACK 0x9000 /* Ethernet loopback packet, per IEEE 802.3 */
#define ETH_P_QINQ1 0x9100 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
#define ETH_P_QINQ2 0x9200 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
#define ETH_P_QINQ3 0x9300 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
Per IEEE 802.3*, the correct packet type for loopback 0x9000. There's already one ETH_P_LOOP 0x0060, which has been there for ages, however it's plainly wrong as anything that small is considered a length field. We can't remove it because legacy, so add a new type which corresponds to the correct id. http://www.iana.org/assignments/ieee-802-numbers/ieee-802-numbers.xhtml CC: "David S. Miller" <davem@davemloft.net> CC: Stefan Richter <stefanr@s5r6.in-berlin.de> CC: Simon Wunderlich <sw@simonwunderlich.de> CC: Neil Jerram <Neil.Jerram@metaswitch.com> CC: Simon Horman <horms@verge.net.au> CC: Arvid Brodin <Arvid.Brodin@xdin.com> Signed-off-by: Veaceslav Falico <vfalico@redhat.com> --- include/uapi/linux/if_ether.h | 1 + 1 file changed, 1 insertion(+)