MdeModulePkg: Update IP4 stack to support point-to-point link with 31-bit mask.

[mirror_edk2.git] / MdeModulePkg / Universal / Network / Ip4Dxe / Ip4Common.c

diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Common.c b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Common.c
index 7c7d1820736a8abc687f6054f78887ad87ebf00c..b582ccf13f66836768ed6e7e57865ef6af269e3e 100644 (file)
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Common.c
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Common.c
@@ -287,10 +287,6 @@ Ip4StationAddressValid (
   IN IP4_ADDR               Netmask\r
   )\r
 {\r
-  IP4_ADDR                  NetBrdcastMask;\r
-  INTN                      Len;\r
-  INTN                      Type;\r
-\r
   //\r
   // Only support the station address with 0.0.0.0/0 to enable DHCP client.\r
   //\r
@@ -301,29 +297,16 @@ Ip4StationAddressValid (
   //\r
   // Only support the continuous net masks\r
   //\r
-  if ((Len = NetGetMaskLength (Netmask)) == (IP4_MASK_MAX + 1)) {\r
+  if (NetGetMaskLength (Netmask) == (IP4_MASK_MAX + 1)) {\r
     return FALSE;\r
   }\r
 \r
   //\r
   // Station address can't be class D or class E address\r
   //\r
-  if ((Type = NetGetIpClass (Ip)) > IP4_ADDR_CLASSC) {\r
-    return FALSE;\r
-  }\r
-\r
-  //\r
-  // Station address can't be subnet broadcast/net broadcast address\r
-  //\r
-  if ((Ip == (Ip & Netmask)) || (Ip == (Ip | ~Netmask))) {\r
+  if (NetGetIpClass (Ip) > IP4_ADDR_CLASSC) {\r
     return FALSE;\r
   }\r
 \r
-  NetBrdcastMask = gIp4AllMasks[MIN (Len, Type << 3)];\r
-\r
-  if (Ip == (Ip | ~NetBrdcastMask)) {\r
-    return FALSE;\r
-  }\r
-\r
-  return TRUE;\r
-}
\ No newline at end of file
+  return NetIp4IsUnicast (Ip, Netmask);\r
+}\r