fixed comments to follow UEFI Spec

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6466 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 82 insertions, 0 deletions

diff --git a/MdePkg/Include/Protocol/Ip4.h b/MdePkg/Include/Protocol/Ip4.h
index 4b3cd02..d19cc7b 100644
--- a/MdePkg/Include/Protocol/Ip4.h
+++ b/MdePkg/Include/Protocol/Ip4.h
@@ -159,6 +159,11 @@ typedef struct {
 

 /**

   Gets the current operational settings for this instance of the EFI IPv4 Protocol driver.

+  

+  The GetModeData() function returns the current operational mode data for this

+  driver instance. The data fields in EFI_IP4_MODE_DATA are read only. This

+  function is used optionally to retrieve the operational mode data of underlying

+  networks or drivers.

 

   @param  This          Pointer to the EFI_IP4_PROTOCOL instance.

   @param  Ip4ModeData   Pointer to the EFI IPv4 Protocol mode data structure.

@@ -181,6 +186,26 @@ EFI_STATUS
 

 /**

   Assigns an IPv4 address and subnet mask to this EFI IPv4 Protocol driver instance.

+  

+  The Configure() function is used to set, change, or reset the operational

+  parameters and filter settings for this EFI IPv4 Protocol instance. Until these

+  parameters have been set, no network traffic can be sent or received by this

+  instance. Once the parameters have been reset (by calling this function with

+  IpConfigData set to NULL), no more traffic can be sent or received until these

+  parameters have been set again. Each EFI IPv4 Protocol instance can be started

+  and stopped independently of each other by enabling or disabling their receive

+  filter settings with the Configure() function.

+  

+  When IpConfigData.UseDefaultAddress is set to FALSE, the new station address will

+  be appended as an alias address into the addresses list in the EFI IPv4 Protocol

+  driver. While set to TRUE, Configure() will trigger the EFI_IP4_CONFIG_PROTOCOL

+  to retrieve the default IPv4 address if it is not available yet. Clients could

+  frequently call GetModeData() to check the status to ensure that the default IPv4

+  address is ready.

+  

+  If operational parameters are reset or changed, any pending transmit and receive

+  requests will be cancelled. Their completion token status will be set to EFI_ABORTED

+  and their events will be signaled.

 

   @param  This         Pointer to the EFI_IP4_PROTOCOL instance.

   @param  IpConfigData Pointer to the EFI IPv4 Protocol configuration data structure.

@@ -211,6 +236,12 @@ EFI_STATUS
 

 /**

   Joins and leaves multicast groups.

+  

+  The Groups() function is used to join and leave multicast group sessions. Joining

+  a group will enable reception of matching multicast packets. Leaving a group will

+  disable the multicast packet reception.

+  

+  If JoinFlag is FALSE and GroupAddress is NULL, all joined groups will be left.

 

   @param  This                  Pointer to the EFI_IP4_PROTOCOL instance.

   @param  JoinFlag              Set to TRUE to join the multicast group session and FALSE to leave.

@@ -244,6 +275,27 @@ EFI_STATUS
 /**

   Adds and deletes routing table entries.

 

+  The Routes() function adds a route to or deletes a route from the routing table.

+  

+  Routes are determined by comparing the SubnetAddress with the destination IPv4

+  address arithmetically AND-ed with the SubnetMask. The gateway address must be

+  on the same subnet as the configured station address.

+  

+  The default route is added with SubnetAddress and SubnetMask both set to 0.0.0.0.

+  The default route matches all destination IPv4 addresses that do not match any

+  other routes.

+  

+  A GatewayAddress that is zero is a nonroute. Packets are sent to the destination

+  IP address if it can be found in the ARP cache or on the local subnet. One automatic

+  nonroute entry will be inserted into the routing table for outgoing packets that

+  are addressed to a local subnet (gateway address of 0.0.0.0).

+  

+  Each EFI IPv4 Protocol instance has its own independent routing table. Those EFI

+  IPv4 Protocol instances that use the default IPv4 address will also have copies

+  of the routing table that was provided by the EFI_IP4_CONFIG_PROTOCOL, and these

+  copies will be updated whenever the EIF IPv4 Protocol driver reconfigures its

+  instances. As a result, client modification to the routing table will be lost.

+

   @param  This                   Pointer to the EFI_IP4_PROTOCOL instance.

   @param  DeleteRoute            Set to TRUE to delete this route from the routing table. Set to

                                  FALSE to add this route to the routing table. SubnetAddress

@@ -283,6 +335,10 @@ EFI_STATUS
 /**

   Places outgoing data packets into the transmit queue.

 

+  The Transmit() function places a sending request in the transmit queue of this

+  EFI IPv4 Protocol instance. Whenever the packet in the token is sent out or some

+  errors occur, the event in the token will be signaled and the status is updated.

+

   @param  This  Pointer to the EFI_IP4_PROTOCOL instance.

   @param  Token Pointer to the transmit token.

 

@@ -314,6 +370,14 @@ EFI_STATUS
 

 /**

   Places a receiving request into the receiving queue.

+  

+  The Receive() function places a completion token into the receive packet queue.

+  This function is always asynchronous.

+  

+  The Token.Event field in the completion token must be filled in by the caller

+  and cannot be NULL. When the receive operation completes, the EFI IPv4 Protocol

+  driver updates the Token.Status and Token.Packet.RxData fields and the Token.Event

+  is signaled.

 

   @param  This  Pointer to the EFI_IP4_PROTOCOL instance.

   @param  Token Pointer to a token that is associated with the receive data descriptor.

@@ -345,6 +409,13 @@ EFI_STATUS
 

 /**

   Abort an asynchronous transmit or receive request.

+  

+  The Cancel() function is used to abort a pending transmit or receive request.

+  If the token is in the transmit or receive request queues, after calling this

+  function, Token->Status will be set to EFI_ABORTED and then Token->Event will

+  be signaled. If the token is not in one of the queues, which usually means the

+  asynchronous operation has completed, this function will not signal the token

+  and EFI_NOT_FOUND is returned.

 

   @param  This  Pointer to the EFI_IP4_PROTOCOL instance.

   @param  Token Pointer to a token that has been issued by

@@ -374,6 +445,17 @@ EFI_STATUS
   

 /**

   Polls for incoming data packets and processes outgoing data packets.

+  

+  The Poll() function polls for incoming data packets and processes outgoing data

+  packets. Network drivers and applications can call the EFI_IP4_PROTOCOL.Poll()

+  function to increase the rate that data packets are moved between the communications

+  device and the transmit and receive queues.

+  

+  In some systems the periodic timer event may not poll the underlying communications

+  device fast enough to transmit and/or receive all data packets without missing

+  incoming packets or dropping outgoing packets. Drivers and applications that are

+  experiencing packet loss should try calling the EFI_IP4_PROTOCOL.Poll() function

+  more often.

 

   @param  This Pointer to the EFI_IP4_PROTOCOL instance.