-/**\r
- Validate that Ip/Netmask pair is OK to be used as station\r
- address. Only continuous netmasks are supported. and check\r
- that StationAddress is a unicast address on the newtwork.\r
-\r
- @param[in] Ip The IP address to validate.\r
- @param[in] Netmask The netmaks of the IP.\r
-\r
- @retval TRUE The Ip/Netmask pair is valid.\r
- @retval FALSE The Ip/Netmask pair is invalid.\r
-\r
-**/\r
-BOOLEAN\r
-Ip4StationAddressValid (\r
- IN IP4_ADDR Ip,\r
- 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
- if (Netmask == IP4_ALLZERO_ADDRESS) {\r
- return (BOOLEAN) (Ip == IP4_ALLZERO_ADDRESS);\r
- }\r
-\r
- //\r
- // Only support the continuous net masks\r
- //\r
- if ((Len = 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
- 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
-}\r
-\r
-\r