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audk/MdePkg/Include/Protocol/IpSec.h

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/** @file
EFI IPSEC Protocol Definition
The EFI_IPSEC_PROTOCOL is used to abstract the ability to deal with the individual
packets sent and received by the host and provide packet-level security for IP
datagram.
The EFI_IPSEC2_PROTOCOL is used to abstract the ability to deal with the individual
packets sent and received by the host and provide packet-level security for IP
datagram. In addition, it supports the Option (extension header) processing in
IPsec which doesn't support in EFI_IPSEC_PROTOCOL. It is also recommended to
use EFI_IPSEC2_PROTOCOL instead of EFI_IPSEC_PROTOCOL especially for IPsec Tunnel
Mode.
Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Revision Reference:
The EFI_IPSEC2_PROTOCOL is introduced in UEFI Specification 2.3D.
**/
#ifndef __EFI_IPSEC_PROTOCOL_H__
#define __EFI_IPSEC_PROTOCOL_H__
#include <Protocol/IpSecConfig.h>
#define EFI_IPSEC_PROTOCOL_GUID \
{ \
0xdfb386f7, 0xe100, 0x43ad, {0x9c, 0x9a, 0xed, 0x90, 0xd0, 0x8a, 0x5e, 0x12 } \
}
#define EFI_IPSEC2_PROTOCOL_GUID \
{ \
0xa3979e64, 0xace8, 0x4ddc, {0xbc, 0x7, 0x4d, 0x66, 0xb8, 0xfd, 0x9, 0x77 } \
}
typedef struct _EFI_IPSEC_PROTOCOL EFI_IPSEC_PROTOCOL;
typedef struct _EFI_IPSEC2_PROTOCOL EFI_IPSEC2_PROTOCOL;
///
/// EFI_IPSEC_FRAGMENT_DATA
/// defines the instances of packet fragments.
///
typedef struct _EFI_IPSEC_FRAGMENT_DATA {
UINT32 FragmentLength;
VOID *FragmentBuffer;
} EFI_IPSEC_FRAGMENT_DATA;
/**
Handles IPsec packet processing for inbound and outbound IP packets.
The EFI_IPSEC_PROCESS process routine handles each inbound or outbound packet.
The behavior is that it can perform one of the following actions:
bypass the packet, discard the packet, or protect the packet.
@param[in] This Pointer to the EFI_IPSEC_PROTOCOL instance.
@param[in] NicHandle Instance of the network interface.
@param[in] IpVer IPV4 or IPV6.
@param[in, out] IpHead Pointer to the IP Header.
@param[in] LastHead The protocol of the next layer to be processed by IPsec.
@param[in] OptionsBuffer Pointer to the options buffer.
@param[in] OptionsLength Length of the options buffer.
@param[in, out] FragmentTable Pointer to a list of fragments.
@param[in] FragmentCount Number of fragments.
@param[in] TrafficDirection Traffic direction.
@param[out] RecycleSignal Event for recycling of resources.
@retval EFI_SUCCESS The packet was bypassed and all buffers remain the same.
@retval EFI_SUCCESS The packet was protected.
@retval EFI_ACCESS_DENIED The packet was discarded.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_IPSEC_PROCESS)(
IN EFI_IPSEC_PROTOCOL *This,
IN EFI_HANDLE NicHandle,
IN UINT8 IpVer,
IN OUT VOID *IpHead,
IN UINT8 *LastHead,
IN VOID *OptionsBuffer,
IN UINT32 OptionsLength,
IN OUT EFI_IPSEC_FRAGMENT_DATA **FragmentTable,
IN UINT32 *FragmentCount,
IN EFI_IPSEC_TRAFFIC_DIR TrafficDirection,
OUT EFI_EVENT *RecycleSignal
);
///
/// EFI_IPSEC_PROTOCOL
/// provides the ability for securing IP communications by authenticating
/// and/or encrypting each IP packet in a data stream.
// EFI_IPSEC_PROTOCOL can be consumed by both the IPv4 and IPv6 stack.
// A user can employ this protocol for IPsec package handling in both IPv4
// and IPv6 environment.
///
struct _EFI_IPSEC_PROTOCOL {
EFI_IPSEC_PROCESS Process; ///< Handle the IPsec message.
EFI_EVENT DisabledEvent; ///< Event signaled when the interface is disabled.
BOOLEAN DisabledFlag; ///< State of the interface.
};
/**
Handles IPsec processing for both inbound and outbound IP packets. Compare with
Process() in EFI_IPSEC_PROTOCOL, this interface has the capability to process
Option(Extension Header).
The EFI_IPSEC2_PROCESS process routine handles each inbound or outbound packet.
The behavior is that it can perform one of the following actions:
bypass the packet, discard the packet, or protect the packet.
@param[in] This Pointer to the EFI_IPSEC2_PROTOCOL instance.
@param[in] NicHandle Instance of the network interface.
@param[in] IpVer IP version.IPv4 or IPv6.
@param[in, out] IpHead Pointer to the IP Header it is either
the EFI_IP4_HEADER or EFI_IP6_HEADER.
On input, it contains the IP header.
On output, 1) in tunnel mode and the
traffic direction is inbound, the buffer
will be reset to zero by IPsec; 2) in
tunnel mode and the traffic direction
is outbound, the buffer will reset to
be the tunnel IP header.3) in transport
mode, the related fielders (like payload
length, Next header) in IP header will
be modified according to the condition.
@param[in, out] LastHead For IP4, it is the next protocol in IP
header. For IP6 it is the Next Header
of the last extension header.
@param[in, out] OptionsBuffer On input, it contains the options
(extensions header) to be processed by
IPsec. On output, 1) in tunnel mode and
the traffic direction is outbound, it
will be set to NULL, and that means this
contents was wrapped after inner header
and should not be concatenated after
tunnel header again; 2) in transport
mode and the traffic direction is inbound,
if there are IP options (extension headers)
protected by IPsec, IPsec will concatenate
the those options after the input options
(extension headers); 3) on other situations,
the output of contents of OptionsBuffer
might be same with input's. The caller
should take the responsibility to free
the buffer both on input and on output.
@param[in, out] OptionsLength On input, the input length of the options
buffer. On output, the output length of
the options buffer.
@param[in, out] FragmentTable Pointer to a list of fragments. On input,
these fragments contain the IP payload.
On output, 1) in tunnel mode and the traffic
direction is inbound, the fragments contain
the whole IP payload which is from the
IP inner header to the last byte of the
packet; 2) in tunnel mode and the traffic
direction is the outbound, the fragments
contains the whole encapsulated payload
which encapsulates the whole IP payload
between the encapsulated header and
encapsulated trailer fields. 3) in transport
mode and the traffic direction is inbound,
the fragments contains the IP payload
which is from the next layer protocol to
the last byte of the packet; 4) in transport
mode and the traffic direction is outbound,
the fragments contains the whole encapsulated
payload which encapsulates the next layer
protocol information between the encapsulated
header and encapsulated trailer fields.
@param[in, out] FragmentCount Number of fragments.
@param[in] TrafficDirection Traffic direction.
@param[out] RecycleSignal Event for recycling of resources.
@retval EFI_SUCCESS The packet was processed by IPsec successfully.
@retval EFI_ACCESS_DENIED The packet was discarded.
@retval EFI_NOT_READY The IKE negotiation is invoked and the packet
was discarded.
@retval EFI_INVALID_PARAMETER One or more of following are TRUE:
If OptionsBuffer is NULL;
If OptionsLength is NULL;
If FragmentTable is NULL;
If FragmentCount is NULL.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_IPSEC_PROCESSEXT)(
IN EFI_IPSEC2_PROTOCOL *This,
IN EFI_HANDLE NicHandle,
IN UINT8 IpVer,
IN OUT VOID *IpHead,
IN OUT UINT8 *LastHead,
IN OUT VOID **OptionsBuffer,
IN OUT UINT32 *OptionsLength,
IN OUT EFI_IPSEC_FRAGMENT_DATA **FragmentTable,
IN OUT UINT32 *FragmentCount,
IN EFI_IPSEC_TRAFFIC_DIR TrafficDirection,
OUT EFI_EVENT *RecycleSignal
);
///
/// EFI_IPSEC2_PROTOCOL
/// supports the Option (extension header) processing in IPsec which doesn't support
/// in EFI_IPSEC_PROTOCOL. It is also recommended to use EFI_IPSEC2_PROTOCOL instead
/// of EFI_IPSEC_PROTOCOL especially for IPsec Tunnel Mode.
/// provides the ability for securing IP communications by authenticating and/or
/// encrypting each IP packet in a data stream.
///
struct _EFI_IPSEC2_PROTOCOL {
EFI_IPSEC_PROCESSEXT ProcessExt;
EFI_EVENT DisabledEvent;
BOOLEAN DisabledFlag;
};
extern EFI_GUID gEfiIpSecProtocolGuid;
extern EFI_GUID gEfiIpSec2ProtocolGuid;
#endif
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