/** @file
  The internal functions and routines to transmit the IP6 packet.

  Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>

  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef __EFI_IP6_OUTPUT_H__
#define __EFI_IP6_OUTPUT_H__

extern UINT32  mIp6Id;

/**
  Output all the available source addresses to the list entry head SourceList. The
  number of source addresses are also returned.

  @param[in]       IpSb             Points to a IP6 service binding instance.
  @param[in]       Destination      The IPv6 destination address.
  @param[out]      Source           The selected IPv6 source address according to
                                    the Destination.

  @retval EFI_SUCCESS           The source addresses were copied to the list entry
                                head SourceList.
  @retval EFI_NO_MAPPING        The IPv6 stack is not auto configured.

**/
EFI_STATUS
Ip6SelectSourceAddress (
  IN IP6_SERVICE        *IpSb,
  IN EFI_IPv6_ADDRESS   *Destination,
  OUT EFI_IPv6_ADDRESS  *Source
  );

/**
  The default callback function for system generated packet.
  It will free the packet.

  @param[in]  Packet        The packet that transmitted.
  @param[in]  IoStatus      The result of the transmission: succeeded or failed.
  @param[in]  LinkFlag      Not used when transmission. Check IP6_FRAME_CALLBACK
                            for reference.
  @param[in]  Context       The context provided by us.

**/
VOID
Ip6SysPacketSent (
  NET_BUF     *Packet,
  EFI_STATUS  IoStatus,
  UINT32      LinkFlag,
  VOID        *Context
  );

/**
  Transmit an IP6 packet. The packet comes either from the IP6
  child's consumer (IpInstance != NULL) or the IP6 driver itself
  (IpInstance == NULL). It will route the packet, fragment it,
  then transmit all the fragments through an interface.

  @param[in]  IpSb             The IP6 service instance to transmit the packet.
  @param[in]  Interface        The IP6 interface to transmit the packet. Ignored
                               if NULL.
  @param[in]  IpInstance       The IP6 child that issues the transmission.  It is
                               NULL if the packet is from the system.
  @param[in]  Packet           The user data to send, excluding the IP header.
  @param[in]  Head             The caller supplied header. The caller should set
                               the  following header fields: NextHeader, HopLimit,
                               Src, Dest, FlowLabel, PayloadLength. This function
                               will fill in the Ver, TrafficClass.
  @param[in]  ExtHdrs          The extension headers to append to the IPv6 basic
                               header.
  @param[in]  ExtHdrsLen       The length of the extension headers.
  @param[in]  Callback         The callback function to issue when transmission
                               completed.
  @param[in]  Context          The opaque context for the callback.

  @retval EFI_INVALID_PARAMETER Any input parameter or the packet is invalid.
  @retval EFI_NO_MAPPING        There is no interface to the destination.
  @retval EFI_NOT_FOUND         There is no route to the destination.
  @retval EFI_SUCCESS           The packet successfully transmitted.
  @retval EFI_OUT_OF_RESOURCES  Failed to finish the operation due to lack of
                                resources.
  @retval Others                Failed to transmit the packet.

**/
EFI_STATUS
Ip6Output (
  IN IP6_SERVICE         *IpSb,
  IN IP6_INTERFACE       *Interface   OPTIONAL,
  IN IP6_PROTOCOL        *IpInstance  OPTIONAL,
  IN NET_BUF             *Packet,
  IN EFI_IP6_HEADER      *Head,
  IN UINT8               *ExtHdrs,
  IN UINT32              ExtHdrsLen,
  IN IP6_FRAME_CALLBACK  Callback,
  IN VOID                *Context
  );

/**
  Remove all the frames on the interface that pass the FrameToCancel,
  either queued on ARP queues, or that have already been delivered to
  MNP and not yet recycled.

  @param[in]  Interface     Interface to remove the frames from.
  @param[in]  IoStatus      The transmit status returned to the frames' callback.
  @param[in]  FrameToCancel Function to select the frame to cancel; NULL to select all.
  @param[in]  Context       Opaque parameters passed to FrameToCancel. Ignored if
                            FrameToCancel is NULL.

**/
VOID
Ip6CancelFrames (
  IN IP6_INTERFACE        *Interface,
  IN EFI_STATUS           IoStatus,
  IN IP6_FRAME_TO_CANCEL  FrameToCancel   OPTIONAL,
  IN VOID                 *Context        OPTIONAL
  );

/**
  Cancel the Packet and all its fragments.

  @param[in]  IpIf                 The interface from which the Packet is sent.
  @param[in]  Packet               The Packet to cancel.
  @param[in]  IoStatus             The status returns to the sender.

**/
VOID
Ip6CancelPacket (
  IN IP6_INTERFACE  *IpIf,
  IN NET_BUF        *Packet,
  IN EFI_STATUS     IoStatus
  );

#endif