linux/if_ether.h: Add VLAN related macros

There are VLAN related macros defined in include/linux/if_vlan.h
in Linux kernel, as well as some kernel useful structures and inline
functions. Instead of a complete import from kernel, let's add these
VLAN macros to U-Boot's include/linux/if_ether.h.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/include/linux/if_ether.h b/include/linux/if_ether.h
index af1bb66..0d62aef 100644 (file)
--- a/include/linux/if_ether.h
+++ b/include/linux/if_ether.h
@@ -155,4 +155,24 @@
 #define ETH_P_MAP      0x00F9  /* Qualcomm multiplexing and    */
                                /* aggregation protocol         */
 
+/* The following macros come from Linux kernel include/linux/if_vlan.h */
+
+#define VLAN_HLEN      4       /* The additional bytes required by VLAN */
+                               /* (in addition to the Ethernet header)  */
+#define VLAN_ETH_HLEN  18      /* Total octets in header.               */
+#define VLAN_ETH_ZLEN  64      /* Min. octets in frame sans FCS         */
+
+/*
+ * According to 802.3ac, the packet can be 4 bytes longer. --Klika Jan
+ */
+#define VLAN_ETH_DATA_LEN      1500    /* Max. octets in payload        */
+#define VLAN_ETH_FRAME_LEN     1518    /* Max. octets in frame sans FCS */
+
+#define VLAN_PRIO_MASK         0xe000  /* Priority Code Point           */
+#define VLAN_PRIO_SHIFT                13
+#define VLAN_CFI_MASK          0x1000  /* Canonical Format Indicator    */
+#define VLAN_TAG_PRESENT       VLAN_CFI_MASK
+#define VLAN_VID_MASK          0x0fff  /* VLAN Identifier               */
+#define VLAN_N_VID             4096
+
 #endif /* _UAPI_LINUX_IF_ETHER_H */