net: Encapsulate CDP packet identification

[platform/kernel/u-boot.git] / include / net.h

diff --git a/include/net.h b/include/net.h
index 8a5b09f..453231b 100644 (file)
--- a/include/net.h
+++ b/include/net.h
@@ -356,8 +356,6 @@ extern uchar                NetEtherNullAddr[6];
 extern ushort          NetOurVLAN;             /* Our VLAN */
 extern ushort          NetOurNativeVLAN;       /* Our Native VLAN */
 
-extern const uchar     NetCDPAddr[6];          /* Ethernet CDP address */
-
 extern int             NetState;               /* Network loop state */
 #define NETLOOP_CONTINUE       1
 #define NETLOOP_RESTART                2
@@ -387,6 +385,16 @@ extern IPaddr_t    NetPingIP;                      /* the ip address to ping */
 /* when CDP completes these hold the return values */
 extern ushort CDPNativeVLAN;           /* CDP returned native VLAN */
 extern ushort CDPApplianceVLAN;                /* CDP returned appliance VLAN */
+
+/*
+ * Check for a CDP packet by examining the received MAC address field
+ */
+static inline int is_cdp_packet(const uchar *et_addr)
+{
+       extern const uchar NetCDPAddr[6];
+
+       return memcmp(et_addr, NetCDPAddr, 6) == 0;
+}
 #endif
 
 #if defined(CONFIG_CMD_SNTP)