68d3f2fb61
2. Update IPv6 driver to consume the EFI_IPSEC2_PROTOCOL. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10991 6f19259b-4bc3-4df7-8a09-765794883524
236 lines
8.2 KiB
C
236 lines
8.2 KiB
C
/** @file
|
|
IP6 internal functions and definitions to process the incoming packets.
|
|
|
|
Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>
|
|
|
|
This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php.
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
**/
|
|
|
|
#ifndef __EFI_IP6_INPUT_H__
|
|
#define __EFI_IP6_INPUT_H__
|
|
|
|
#define IP6_MIN_HEADLEN 40
|
|
#define IP6_MAX_HEADLEN 120
|
|
///
|
|
/// 8(ESP header) + 16(max IV) + 16(max padding) + 2(ESP tail) + 12(max ICV) = 54
|
|
///
|
|
#define IP6_MAX_IPSEC_HEADLEN 54
|
|
|
|
|
|
#define IP6_ASSEMLE_HASH_SIZE 127
|
|
///
|
|
/// Lift time in seconds.
|
|
///
|
|
#define IP6_FRAGMENT_LIFE 60
|
|
#define IP6_MAX_PACKET_SIZE 65535
|
|
|
|
|
|
#define IP6_GET_CLIP_INFO(Packet) ((IP6_CLIP_INFO *) ((Packet)->ProtoData))
|
|
|
|
#define IP6_ASSEMBLE_HASH(Dst, Src, Id) \
|
|
((*((UINT32 *) (Dst)) + *((UINT32 *) (Src)) + (Id)) % IP6_ASSEMLE_HASH_SIZE)
|
|
|
|
#define IP6_RXDATA_WRAP_SIZE(NumFrag) \
|
|
(sizeof (IP6_RXDATA_WRAP) + sizeof (EFI_IP6_FRAGMENT_DATA) * ((NumFrag) - 1))
|
|
|
|
//
|
|
// Per packet information for input process. LinkFlag specifies whether
|
|
// the packet is received as Link layer unicast, multicast or broadcast.
|
|
// The CastType is the IP layer cast type, such as IP multicast or unicast.
|
|
// Start, End and Length are staffs used to assemble the packets. Start
|
|
// is the sequence number of the first byte of data in the packet. Length
|
|
// is the number of bytes of data. End = Start + Length, that is, the
|
|
// sequence number of last byte + 1. Each assembled packet has a count down
|
|
// life. If it isn't consumed before Life reaches zero, the packet is released.
|
|
//
|
|
typedef struct {
|
|
UINT32 LinkFlag;
|
|
INT32 CastType;
|
|
INT32 Start;
|
|
INT32 End;
|
|
INT32 Length;
|
|
UINT32 Life;
|
|
EFI_STATUS Status;
|
|
UINT32 Id;
|
|
UINT16 HeadLen;
|
|
UINT8 NextHeader;
|
|
UINT8 LastFrag;
|
|
UINT32 FormerNextHeader;
|
|
} IP6_CLIP_INFO;
|
|
|
|
//
|
|
// Structure used to assemble IP packets.
|
|
//
|
|
typedef struct {
|
|
LIST_ENTRY Link;
|
|
LIST_ENTRY Fragments; // List of all the fragments of this packet
|
|
|
|
//
|
|
// Identity of one IP6 packet. Each fragment of a packet has
|
|
// the same (Dst, Src, Id).
|
|
//
|
|
EFI_IPv6_ADDRESS Dst;
|
|
EFI_IPv6_ADDRESS Src;
|
|
UINT32 Id;
|
|
|
|
UINT32 TotalLen;
|
|
UINT32 CurLen;
|
|
UINT32 Life; // Count down life for the packet.
|
|
|
|
EFI_IP6_HEADER *Head; // IP head of the first fragment
|
|
IP6_CLIP_INFO *Info; // Per packet information of the first fragment
|
|
NET_BUF *Packet; // The first fragment of the packet
|
|
} IP6_ASSEMBLE_ENTRY;
|
|
|
|
//
|
|
// Each Ip service instance has an assemble table to reassemble
|
|
// the packets before delivery to its children. It is organized
|
|
// as hash table.
|
|
//
|
|
typedef struct {
|
|
LIST_ENTRY Bucket[IP6_ASSEMLE_HASH_SIZE];
|
|
} IP6_ASSEMBLE_TABLE;
|
|
|
|
/**
|
|
The IP6 input routine. It is called by the IP6_INTERFACE when an
|
|
IP6 fragment is received from MNP.
|
|
|
|
@param[in] Packet The IP6 packet received.
|
|
@param[in] IoStatus The return status of receive request.
|
|
@param[in] Flag The link layer flag for the packet received, such
|
|
as multicast.
|
|
@param[in] Context The IP6 service instance that own the MNP.
|
|
|
|
**/
|
|
VOID
|
|
Ip6AcceptFrame (
|
|
IN NET_BUF *Packet,
|
|
IN EFI_STATUS IoStatus,
|
|
IN UINT32 Flag,
|
|
IN VOID *Context
|
|
);
|
|
|
|
/**
|
|
Deliver the received packets to upper layer if there are both received
|
|
requests and enqueued packets. If the enqueued packet is shared, it will
|
|
duplicate it to a non-shared packet, release the shared packet, then
|
|
deliver the non-shared packet up.
|
|
|
|
@param[in] IpInstance The IP child to deliver the packet up.
|
|
|
|
@retval EFI_OUT_OF_RESOURCES Failed to allocate resources to deliver the
|
|
packets.
|
|
@retval EFI_SUCCESS All the enqueued packets that can be delivered
|
|
are delivered up.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
Ip6InstanceDeliverPacket (
|
|
IN IP6_PROTOCOL *IpInstance
|
|
);
|
|
|
|
/**
|
|
The work function to locate the IPsec protocol to process the inbound or
|
|
outbound IP packets. The process routine handles the packet with the following
|
|
actions: bypass the packet, discard the packet, or protect the packet.
|
|
|
|
@param[in] IpSb The IP6 service instance.
|
|
@param[in, out] Head The caller-supplied IP6 header.
|
|
@param[in, out] LastHead The next header field of last IP header.
|
|
@param[in, out] Netbuf The IP6 packet to be processed by IPsec.
|
|
@param[in, out] ExtHdrs The caller-supplied options.
|
|
@param[in, out] ExtHdrsLen The length of the option.
|
|
@param[in] Direction The directionality in an SPD entry,
|
|
EfiIPsecInBound, or EfiIPsecOutBound.
|
|
@param[in] Context The token's wrap.
|
|
|
|
@retval EFI_SUCCESS The IPsec protocol is not available or disabled.
|
|
@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.
|
|
@retval EFI_OUT_OF_RESOURCES There are not suffcient resources to complete the operation.
|
|
@retval EFI_BUFFER_TOO_SMALL The number of non-empty blocks is bigger than the
|
|
number of input data blocks when building a fragment table.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
Ip6IpSecProcessPacket (
|
|
IN IP6_SERVICE *IpSb,
|
|
IN OUT EFI_IP6_HEADER **Head,
|
|
IN OUT UINT8 *LastHead,
|
|
IN OUT NET_BUF **Netbuf,
|
|
IN OUT UINT8 **ExtHdrs,
|
|
IN OUT UINT32 *ExtHdrsLen,
|
|
IN EFI_IPSEC_TRAFFIC_DIR Direction,
|
|
IN VOID *Context
|
|
);
|
|
|
|
/**
|
|
Initialize an already allocated assemble table. This is generally
|
|
the assemble table embedded in the IP6 service instance.
|
|
|
|
@param[in, out] Table The assemble table to initialize.
|
|
|
|
**/
|
|
VOID
|
|
Ip6CreateAssembleTable (
|
|
IN OUT IP6_ASSEMBLE_TABLE *Table
|
|
);
|
|
|
|
/**
|
|
Clean up the assemble table: remove all the fragments
|
|
and assemble entries.
|
|
|
|
@param[in, out] Table The assemble table to clean up.
|
|
|
|
**/
|
|
VOID
|
|
Ip6CleanAssembleTable (
|
|
IN OUT IP6_ASSEMBLE_TABLE *Table
|
|
);
|
|
|
|
/**
|
|
Demultiple the packet. the packet delivery is processed in two
|
|
passes. The first pass will enque a shared copy of the packet
|
|
to each IP6 child that accepts the packet. The second pass will
|
|
deliver a non-shared copy of the packet to each IP6 child that
|
|
has pending receive requests. Data is copied if more than one
|
|
child wants to consume the packet bacause each IP child need
|
|
its own copy of the packet to make changes.
|
|
|
|
@param[in] IpSb The IP6 service instance that received the packet.
|
|
@param[in] Head The header of the received packet.
|
|
@param[in] Packet The data of the received packet.
|
|
|
|
@retval EFI_NOT_FOUND No IP child accepts the packet.
|
|
@retval EFI_SUCCESS The packet is enqueued or delivered to some IP
|
|
children.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
Ip6Demultiplex (
|
|
IN IP6_SERVICE *IpSb,
|
|
IN EFI_IP6_HEADER *Head,
|
|
IN NET_BUF *Packet
|
|
);
|
|
|
|
/**
|
|
Timeout the fragmented, enqueued, and transmitted packets.
|
|
|
|
@param[in] IpSb The IP6 service instance to timeout.
|
|
|
|
**/
|
|
VOID
|
|
Ip6PacketTimerTicking (
|
|
IN IP6_SERVICE *IpSb
|
|
);
|
|
|
|
#endif
|