net: cosmetic: Add a more explicit comment about 802.2

Make the comment more accurate about the header including SNAP

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Simon Glass <sjg@chromium.org>

include/net.h

@@ -179,11 +179,11 @@ struct e802_hdr {
 	ushort		et_prot;	/* 802 protocol			*/
 };
 
-/* 802 ethernet header size */
+/* 802 + SNAP + ethernet header size */
 #define E802_HDR_SIZE	(sizeof(struct e802_hdr))
 
 /*
- *	Ethernet header
+ *	Virtual LAN Ethernet header
  */
 struct vlan_ethernet_hdr {
 	uchar		vet_dest[6];	/* Destination node		*/

net/net.c

@@ -898,7 +898,8 @@ NetReceive(uchar *inpkt, int len)
 	if (x < 1514) {
 		struct e802_hdr *et802 = (struct e802_hdr *)et;
 		/*
-		 *	Got a 802 packet.  Check the other protocol field.
+		 *	Got a 802.2 packet.  Check the other protocol field.
+		 *	XXX VLAN over 802.2+SNAP not implemented!
 		 */
 		x = ntohs(et802->et_prot);