1 files changed, 42 insertions, 0 deletions
diff --git a/MdePkg/Include/Protocol/Tcp4.h b/MdePkg/Include/Protocol/Tcp4.h
index 715c581e6d..262c5be75f 100644
--- a/MdePkg/Include/Protocol/Tcp4.h
+++ b/MdePkg/Include/Protocol/Tcp4.h
@@ -485,6 +485,48 @@ EFI_STATUS
   )
 ;
 
+/**  
+  @par Protocol Description:
+  The EFI_TCP4_PROTOCOL defines the EFI TCPv4 Protocol child to be used by 
+  any network drivers or applications to send or receive data stream. 
+  It can either listen on a specified port as a service or actively connected 
+  to remote peer as a client. Each instance has its own independent settings, 
+  such as the routing table.
+
+  @param GetModeData
+  Get the current operational status. 
+
+  @param Configure
+  Initialize, change, or brutally reset operational settings of the EFI TCPv4 Protocol. 
+
+  @param Routes
+  Add or delete routing entries for this TCP4 instance. 
+
+  @param Connect
+  Initiate the TCP three-way handshake to connect to the remote peer 
+  configured in this TCP instance. The function is a nonblocking operation. 
+
+  @param Accept
+  Listen for incoming TCP connection request. This function is a nonblocking operation. 
+
+  @param Transmit
+  Queue outgoing data to the transmit queue. This function is a nonblocking operation. 
+
+  @param Receive
+  Queue a receiving request token to the receive queue. This function is 
+  a nonblocking operation. 
+
+  @param Close
+  Gracefully disconnecting a TCP connection follow RFC 793 or reset a TCP 
+  connection. This function is a nonblocking operation. 
+
+  @param Cancel
+  Abort a pending connect, listen, transmit or receive request. 
+
+  @param Poll
+  Poll to receive incoming data and transmit outgoing TCP segments. 
+
+**/
 struct _EFI_TCP4_PROTOCOL {
   EFI_TCP4_GET_MODE_DATA                 GetModeData;
   EFI_TCP4_CONFIGURE                     Configure;