X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8f6c56a50524aa785f7e596d52dddfb331e18961..4452a7af2eac33dbad800bcc91f2399d62c18f53:/bsd/netat/ddp.h?ds=sidebyside

diff --git a/bsd/netat/ddp.h b/bsd/netat/ddp.h
index e2e8b3909..0554ddf0e 100644
--- a/bsd/netat/ddp.h
+++ b/bsd/netat/ddp.h
@@ -68,9 +68,17 @@
 /* DDP extended header packet format */
 
 typedef struct {
-        unsigned   unused:2,
-		   hopcount:4,
-		   length:10;  		/* Datagram length */
+#if BYTE_ORDER == BIG_ENDIAN
+		unsigned	unused:2,
+        		    hopcount:4,  	/* hop count/len high order  */
+        			length_H:2;	
+#endif
+#if BYTE_ORDER == LITTLE_ENDIAN
+		unsigned	length_H:2,
+					hopcount:4,
+					unused:2;
+#endif
+        u_char	   length_L;			/* len low order */
         ua_short   checksum;    	/* Checksum */
         at_net     dst_net;  		/* Destination network number */
         at_net     src_net;  		/* Source network number */
@@ -78,12 +86,17 @@ typedef struct {
         at_node    src_node;  		/* Source node ID */
         at_socket  dst_socket; 		/* Destination socket number */
         at_socket  src_socket; 		/* Source socket number */
-        u_char	   type;  		/* Protocol type */
+        u_char	   type;  			/* Protocol type */
         char       data[DDP_DATA_SIZE];
 } at_ddp_t;
 
-#define	DDPLEN_ASSIGN(ddp, len)		ddp->length = len
-#define	DDPLEN_VALUE(ddp)		ddp->length
+
+#define	DDPLEN_ASSIGN(ddp, len)		\
+		ddp->length_H = 0x03 & (len >> 8); \
+		ddp->length_L = len & 0xff;
+		
+#define	DDPLEN_VALUE(ddp)			\
+		(((u_short)ddp->length_H) << 8) + ddp->length_L
 
 /* DDP module statistics and configuration */