date and time created 81/11/30 10:09:58 by wnj

SCCS-vsn: sys/vax/if/if_en.h 4.1

diff --git a/usr/src/sys/vax/if/if_en.h b/usr/src/sys/vax/if/if_en.h
new file mode 100644 (file)
index 0000000..8fdfd2e
--- /dev/null
+++ b/usr/src/sys/vax/if/if_en.h
@@ -0,0 +1,19 @@
+/*     if_en.h 4.1     81/11/30        */
+
+/*
+ * Structure of a Ethernet header.
+ */
+struct en_header {
+       u_char  en_shost;
+       u_char  en_dhost;
+       u_short en_type;
+};
+
+#define        ENPUP_IPTYPE    0x0800          /* IP protocol */
+/*
+ * The ENPUP_NTRAILER packet types starting at ENPUP_TRAIL have
+ * (type-ENPUP_TRAIL)*512 bytes of data followed
+ * by a PUP type (as given above).
+ */
+#define        ENPUP_TRAIL     0x1000          /* Trailer PUP */
+#define        ENPUP_NTRAILER  16