Adopt new IPv4/IPv6 device path for network modules.

Signed-off-by: tye
Reviewed-by: niruiyu

Adopt SasEx and new IPv6 device path for DevicePathDxe driver.
Signed-off-by: niruiyu
Reviewed-by: erictian

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12574 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/Network/IScsiDxe/IScsiProto.c

@@ -692,6 +692,14 @@ IScsiProcessLoginRsp (
   LoginRsp->MaxCmdSN  = NTOHL (LoginRsp->MaxCmdSN);
 
   if ((Conn->CurrentStage == ISCSI_SECURITY_NEGOTIATION) && (Conn->CHAPStep == ISCSI_CHAP_INITIAL)) {
+    //
+    // If the Login Request is a leading Login Request, the target MUST use
+    // the value presented in CmdSN as the target value for ExpCmdSN.
+    //
+    if ((Session->State == SESSION_STATE_FREE) && (Session->CmdSN != LoginRsp->ExpCmdSN)) {
+      return EFI_PROTOCOL_ERROR;
+    }
+
     //
     // It's the initial Login Response, initialize the local ExpStatSN, MaxCmdSN
     // and ExpCmdSN.