[mirror_edk2.git] / MdeModulePkg / Universal / Network / Ip4Dxe / Ip4Input.h

/** @file\r
\r
Copyright (c) 2005 - 2009, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#ifndef __EFI_IP4_INPUT_H__\r
#define __EFI_IP4_INPUT_H__\r
\r
#define IP4_MIN_HEADLEN        20\r
#define IP4_MAX_HEADLEN        60\r
///\r
/// 8(ESP header) + 16(max IV) + 16(max padding) + 2(ESP tail) + 12(max ICV) = 54 \r
///\r
#define IP4_MAX_IPSEC_HEADLEN  54\r
\r
#define IP4_ASSEMLE_HASH_SIZE  31\r
#define IP4_FRAGMENT_LIFE      120\r
#define IP4_MAX_PACKET_SIZE    65535\r
\r
///\r
/// Per packet information for input process. LinkFlag specifies whether\r
/// the packet is received as Link layer unicast, multicast or broadcast.\r
/// The CastType is the IP layer cast type, such as IP multicast or unicast.\r
/// Start, End and Length are staffs used to assemble the packets. Start\r
/// is the sequence number of the first byte of data in the packet. Length\r
/// is the number of bytes of data. End = Start + Length, that is, the\r
/// sequence number of last byte + 1. Each assembled packet has a count down\r
/// life. If it isn't consumed before Life reaches zero, the packet is released.\r
///\r
typedef struct {\r
  UINTN                     LinkFlag;\r
  INTN                      CastType;\r
  INTN                      Start;\r
  INTN                      End;\r
  INTN                      Length;\r
  UINT32                    Life;\r
  EFI_STATUS                Status;\r
} IP4_CLIP_INFO;\r
\r
///\r
/// Structure used to assemble IP packets.\r
///\r
typedef struct {\r
  LIST_ENTRY                Link;\r
\r
  //\r
  // Identity of one IP4 packet. Each fragment of a packet has\r
  // the same (Dst, Src, Id, Protocol).\r
  //\r
  IP4_ADDR                  Dst;\r
  IP4_ADDR                  Src;\r
  UINT16                    Id;\r
  UINT8                     Protocol;\r
\r
  INTN                      TotalLen;\r
  INTN                      CurLen;\r
  LIST_ENTRY                Fragments;  // List of all the fragments of this packet\r
\r
  IP4_HEAD                  *Head;      // IP head of the first fragment\r
  IP4_CLIP_INFO             *Info;      // Per packet info of the first fragment\r
  INTN                      Life;       // Count down life for the packet.\r
} IP4_ASSEMBLE_ENTRY;\r
\r
///\r
/// Each Ip service instance has an assemble table to reassemble\r
/// the packets before delivery to its children. It is organized\r
/// as hash table.\r
///\r
typedef struct {\r
  LIST_ENTRY      Bucket[IP4_ASSEMLE_HASH_SIZE];\r
} IP4_ASSEMBLE_TABLE;\r
\r
#define IP4_GET_CLIP_INFO(Packet) ((IP4_CLIP_INFO *) ((Packet)->ProtoData))\r
\r
#define IP4_ASSEMBLE_HASH(Dst, Src, Id, Proto)  \\r
          (((Dst) + (Src) + ((Id) << 16) + (Proto)) % IP4_ASSEMLE_HASH_SIZE)\r
\r
#define IP4_RXDATA_WRAP_SIZE(NumFrag) \\r
          (sizeof (IP4_RXDATA_WRAP) + sizeof (EFI_IP4_FRAGMENT_DATA) * ((NumFrag) - 1))\r
\r
/**\r
  Initialize an already allocated assemble table. This is generally\r
  the assemble table embedded in the IP4 service instance.\r
\r
  @param[in, out]  Table                  The assemble table to initialize.\r
\r
**/\r
VOID\r
Ip4InitAssembleTable (\r
  IN OUT IP4_ASSEMBLE_TABLE     *Table\r
  );\r
\r
/**\r
  Clean up the assemble table: remove all the fragments\r
  and assemble entries.\r
\r
  @param[in]  Table                  The assemble table to clean up\r
\r
**/\r
VOID\r
Ip4CleanAssembleTable (\r
  IN IP4_ASSEMBLE_TABLE     *Table\r
  );\r
\r
/**\r
  The IP4 input routine. It is called by the IP4_INTERFACE when a\r
  IP4 fragment is received from MNP.\r
\r
  @param[in]  Ip4Instance        The IP4 child that request the receive, most like\r
                                 it is NULL.\r
  @param[in]  Packet             The IP4 packet received.\r
  @param[in]  IoStatus           The return status of receive request.\r
  @param[in]  Flag               The link layer flag for the packet received, such\r
                                 as multicast.\r
  @param[in]  Context            The IP4 service instance that own the MNP.\r
\r
**/\r
VOID\r
Ip4AccpetFrame (\r
  IN IP4_PROTOCOL           *Ip4Instance,\r
  IN NET_BUF                *Packet,\r
  IN EFI_STATUS             IoStatus,\r
  IN UINT32                 Flag,\r
  IN VOID                   *Context\r
  );\r
\r
/**\r
  Demultiple the packet. the packet delivery is processed in two\r
  passes. The first pass will enque a shared copy of the packet\r
  to each IP4 child that accepts the packet. The second pass will\r
  deliver a non-shared copy of the packet to each IP4 child that\r
  has pending receive requests. Data is copied if more than one\r
  child wants to consume the packet because each IP child needs\r
  its own copy of the packet to make changes.\r
\r
  @param[in]  IpSb                   The IP4 service instance that received the packet\r
  @param[in]  Head                   The header of the received packet\r
  @param[in]  Packet                 The data of the received packet\r
\r
  @retval EFI_NOT_FOUND          No IP child accepts the packet\r
  @retval EFI_SUCCESS            The packet is enqueued or delivered to some IP\r
                                 children.\r
\r
**/\r
EFI_STATUS\r
Ip4Demultiplex (\r
  IN IP4_SERVICE            *IpSb,\r
  IN IP4_HEAD               *Head,\r
  IN NET_BUF                *Packet\r
  );\r
\r
/**\r
  Enqueue a received packet to all the IP children that share\r
  the same interface.\r
\r
  @param[in]  IpSb                   The IP4 service instance that receive the packet\r
  @param[in]  Head                   The header of the received packet\r
  @param[in]  Packet                 The data of the received packet\r
  @param[in]  IpIf                   The interface to enqueue the packet to\r
\r
  @return The number of the IP4 children that accepts the packet\r
\r
**/\r
INTN\r
Ip4InterfaceEnquePacket (\r
  IN IP4_SERVICE            *IpSb,\r
  IN IP4_HEAD               *Head,\r
  IN NET_BUF                *Packet,\r
  IN IP4_INTERFACE          *IpIf\r
  );\r
\r
/**\r
  Deliver the received packets to upper layer if there are both received\r
  requests and enqueued packets. If the enqueued packet is shared, it will\r
  duplicate it to a non-shared packet, release the shared packet, then\r
  deliver the non-shared packet up.\r
\r
  @param[in]  IpInstance         The IP child to deliver the packet up.\r
\r
  @retval EFI_OUT_OF_RESOURCES   Failed to allocate resources to deliver the\r
                                 packets.\r
  @retval EFI_SUCCESS            All the enqueued packets that can be delivered\r
                                 are delivered up.\r
\r
**/\r
EFI_STATUS\r
Ip4InstanceDeliverPacket (\r
  IN IP4_PROTOCOL           *IpInstance\r
  );\r
\r
/**\r
  Timeout the fragment and enqueued packets.\r
\r
  @param[in]  IpSb                   The IP4 service instance to timeout\r
\r
**/\r
VOID\r
Ip4PacketTimerTicking (\r
  IN IP4_SERVICE            *IpSb\r
  );\r
\r
/**\r
  The work function to locate IPsec protocol to process the inbound or \r
  outbound IP packets. The process routine handls the packet with following\r
  actions: bypass the packet, discard the packet, or protect the packet.       \r
\r
  @param[in]       IpSb          The IP4 service instance\r
  @param[in]       Head          The The caller supplied IP4 header.\r
  @param[in, out]  Netbuf        The IP4 packet to be processed by IPsec\r
  @param[in]       Options       The caller supplied options\r
  @param[in]       OptionsLen    The length of the option\r
  @param[in]       Direction     The directionality in an SPD entry, \r
                                 EfiIPsecInBound or EfiIPsecOutBound\r
  @param[in]       Context       The token's wrap\r
\r
  @retval EFI_SUCCESS            The IPsec protocol is not available or disabled.\r
  @retval EFI_SUCCESS            The packet was bypassed and all buffers remain the same.\r
  @retval EFI_SUCCESS            The packet was protected.\r
  @retval EFI_ACCESS_DENIED      The packet was discarded.  \r
  @retval EFI_OUT_OF_RESOURCES   There is no suffcient resource to complete the operation.\r
  @retval EFI_BUFFER_TOO_SMALL   The number of non-empty block is bigger than the \r
                                 number of input data blocks when build a fragment table.\r
\r
**/\r
EFI_STATUS\r
Ip4IpSecProcessPacket (\r
  IN IP4_SERVICE            *IpSb,\r
  IN IP4_HEAD               *Head,\r
  IN OUT NET_BUF            **Netbuf,\r
  IN UINT8                  *Options,\r
  IN UINT32                 OptionsLen,\r
  IN EFI_IPSEC_TRAFFIC_DIR  Direction,\r
  IN VOID                   *Context\r
  );\r
\r
#endif\r
Commit	Line	Data
83cbd279	1	/** @file\r
83cbd279	2	\r
e5eed7d3 HT	3	Copyright (c) 2005 - 2009, Intel Corporation. All rights reserved.<BR>\r
e5eed7d3 HT	4	This program and the accompanying materials\r
83cbd279	5	are licensed and made available under the terms and conditions of the BSD License\r
	6	which accompanies this distribution. The full text of the license may be found at\r
	7	http://opensource.org/licenses/bsd-license.php\r
	8	\r
	9	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	10	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	11	\r
83cbd279	12	**/\r
	13	\r
	14	#ifndef __EFI_IP4_INPUT_H__\r
	15	#define __EFI_IP4_INPUT_H__\r
	16	\r
f6b7393c	17	#define IP4_MIN_HEADLEN 20\r
f6b7393c	18	#define IP4_MAX_HEADLEN 60\r
a1503a32	19	///\r
	20	/// 8(ESP header) + 16(max IV) + 16(max padding) + 2(ESP tail) + 12(max ICV) = 54 \r
	21	///\r
	22	#define IP4_MAX_IPSEC_HEADLEN 54\r
83cbd279	23	\r
f6b7393c	24	#define IP4_ASSEMLE_HASH_SIZE 31\r
	25	#define IP4_FRAGMENT_LIFE 120\r
	26	#define IP4_MAX_PACKET_SIZE 65535\r
96e1079f	27	\r
	28	///\r
	29	/// Per packet information for input process. LinkFlag specifies whether\r
	30	/// the packet is received as Link layer unicast, multicast or broadcast.\r
	31	/// The CastType is the IP layer cast type, such as IP multicast or unicast.\r
	32	/// Start, End and Length are staffs used to assemble the packets. Start\r
	33	/// is the sequence number of the first byte of data in the packet. Length\r
	34	/// is the number of bytes of data. End = Start + Length, that is, the\r
	35	/// sequence number of last byte + 1. Each assembled packet has a count down\r
	36	/// life. If it isn't consumed before Life reaches zero, the packet is released.\r
	37	///\r
83cbd279	38	typedef struct {\r
	39	UINTN LinkFlag;\r
	40	INTN CastType;\r
	41	INTN Start;\r
	42	INTN End;\r
	43	INTN Length;\r
	44	UINT32 Life;\r
	45	EFI_STATUS Status;\r
	46	} IP4_CLIP_INFO;\r
	47	\r
96e1079f	48	///\r
	49	/// Structure used to assemble IP packets.\r
	50	///\r
83cbd279	51	typedef struct {\r
e48e37fc	52	LIST_ENTRY Link;\r
83cbd279	53	\r
	54	//\r
	55	// Identity of one IP4 packet. Each fragment of a packet has\r
	56	// the same (Dst, Src, Id, Protocol).\r
	57	//\r
	58	IP4_ADDR Dst;\r
	59	IP4_ADDR Src;\r
	60	UINT16 Id;\r
	61	UINT8 Protocol;\r
	62	\r
	63	INTN TotalLen;\r
	64	INTN CurLen;\r
e48e37fc	65	LIST_ENTRY Fragments; // List of all the fragments of this packet\r
83cbd279	66	\r
	67	IP4_HEAD *Head; // IP head of the first fragment\r
	68	IP4_CLIP_INFO *Info; // Per packet info of the first fragment\r
	69	INTN Life; // Count down life for the packet.\r
	70	} IP4_ASSEMBLE_ENTRY;\r
	71	\r
96e1079f	72	///\r
	73	/// Each Ip service instance has an assemble table to reassemble\r
	74	/// the packets before delivery to its children. It is organized\r
	75	/// as hash table.\r
	76	///\r
83cbd279	77	typedef struct {\r
e48e37fc	78	LIST_ENTRY Bucket[IP4_ASSEMLE_HASH_SIZE];\r
83cbd279	79	} IP4_ASSEMBLE_TABLE;\r
	80	\r
	81	#define IP4_GET_CLIP_INFO(Packet) ((IP4_CLIP_INFO *) ((Packet)->ProtoData))\r
	82	\r
	83	#define IP4_ASSEMBLE_HASH(Dst, Src, Id, Proto) \\r
	84	(((Dst) + (Src) + ((Id) << 16) + (Proto)) % IP4_ASSEMLE_HASH_SIZE)\r
	85	\r
	86	#define IP4_RXDATA_WRAP_SIZE(NumFrag) \\r
	87	(sizeof (IP4_RXDATA_WRAP) + sizeof (EFI_IP4_FRAGMENT_DATA) * ((NumFrag) - 1))\r
	88	\r
2ff29212	89	/**\r
	90	Initialize an already allocated assemble table. This is generally\r
	91	the assemble table embedded in the IP4 service instance.\r
	92	\r
3e8c18da	93	@param[in, out] Table The assemble table to initialize.\r
2ff29212	94	\r
2ff29212	95	**/\r
83cbd279	96	VOID\r
83cbd279	97	Ip4InitAssembleTable (\r
2ff29212	98	IN OUT IP4_ASSEMBLE_TABLE *Table\r
83cbd279	99	);\r
83cbd279	100	\r
2ff29212	101	/**\r
	102	Clean up the assemble table: remove all the fragments\r
	103	and assemble entries.\r
	104	\r
3e8c18da	105	@param[in] Table The assemble table to clean up\r
2ff29212	106	\r
2ff29212	107	**/\r
83cbd279	108	VOID\r
	109	Ip4CleanAssembleTable (\r
	110	IN IP4_ASSEMBLE_TABLE *Table\r
	111	);\r
	112	\r
2ff29212	113	/**\r
	114	The IP4 input routine. It is called by the IP4_INTERFACE when a\r
	115	IP4 fragment is received from MNP.\r
	116	\r
3e8c18da	117	@param[in] Ip4Instance The IP4 child that request the receive, most like\r
2ff29212	118	it is NULL.\r
3e8c18da	119	@param[in] Packet The IP4 packet received.\r
	120	@param[in] IoStatus The return status of receive request.\r
	121	@param[in] Flag The link layer flag for the packet received, such\r
2ff29212	122	as multicast.\r
3e8c18da	123	@param[in] Context The IP4 service instance that own the MNP.\r
2ff29212	124	\r
2ff29212	125	**/\r
83cbd279	126	VOID\r
	127	Ip4AccpetFrame (\r
	128	IN IP4_PROTOCOL *Ip4Instance,\r
	129	IN NET_BUF *Packet,\r
	130	IN EFI_STATUS IoStatus,\r
	131	IN UINT32 Flag,\r
	132	IN VOID *Context\r
	133	);\r
	134	\r
2ff29212	135	/**\r
	136	Demultiple the packet. the packet delivery is processed in two\r
	137	passes. The first pass will enque a shared copy of the packet\r
	138	to each IP4 child that accepts the packet. The second pass will\r
	139	deliver a non-shared copy of the packet to each IP4 child that\r
	140	has pending receive requests. Data is copied if more than one\r
	141	child wants to consume the packet because each IP child needs\r
	142	its own copy of the packet to make changes.\r
	143	\r
3e8c18da	144	@param[in] IpSb The IP4 service instance that received the packet\r
	145	@param[in] Head The header of the received packet\r
	146	@param[in] Packet The data of the received packet\r
2ff29212	147	\r
	148	@retval EFI_NOT_FOUND No IP child accepts the packet\r
	149	@retval EFI_SUCCESS The packet is enqueued or delivered to some IP\r
	150	children.\r
	151	\r
	152	**/\r
83cbd279	153	EFI_STATUS\r
83cbd279	154	Ip4Demultiplex (\r
2ff29212	155	IN IP4_SERVICE *IpSb,\r
83cbd279	156	IN IP4_HEAD *Head,\r
	157	IN NET_BUF *Packet\r
	158	);\r
	159	\r
2ff29212	160	/**\r
	161	Enqueue a received packet to all the IP children that share\r
	162	the same interface.\r
	163	\r
3e8c18da	164	@param[in] IpSb The IP4 service instance that receive the packet\r
	165	@param[in] Head The header of the received packet\r
	166	@param[in] Packet The data of the received packet\r
	167	@param[in] IpIf The interface to enqueue the packet to\r
2ff29212	168	\r
	169	@return The number of the IP4 children that accepts the packet\r
	170	\r
	171	**/\r
83cbd279	172	INTN\r
83cbd279	173	Ip4InterfaceEnquePacket (\r
2ff29212	174	IN IP4_SERVICE *IpSb,\r
83cbd279	175	IN IP4_HEAD *Head,\r
83cbd279	176	IN NET_BUF *Packet,\r
2ff29212	177	IN IP4_INTERFACE *IpIf\r
83cbd279	178	);\r
83cbd279	179	\r
2ff29212	180	/**\r
	181	Deliver the received packets to upper layer if there are both received\r
	182	requests and enqueued packets. If the enqueued packet is shared, it will\r
	183	duplicate it to a non-shared packet, release the shared packet, then\r
	184	deliver the non-shared packet up.\r
	185	\r
3e8c18da	186	@param[in] IpInstance The IP child to deliver the packet up.\r
2ff29212	187	\r
	188	@retval EFI_OUT_OF_RESOURCES Failed to allocate resources to deliver the\r
	189	packets.\r
	190	@retval EFI_SUCCESS All the enqueued packets that can be delivered\r
	191	are delivered up.\r
	192	\r
	193	**/\r
83cbd279	194	EFI_STATUS\r
83cbd279	195	Ip4InstanceDeliverPacket (\r
2ff29212	196	IN IP4_PROTOCOL *IpInstance\r
83cbd279	197	);\r
83cbd279	198	\r
2ff29212	199	/**\r
	200	Timeout the fragment and enqueued packets.\r
	201	\r
3e8c18da	202	@param[in] IpSb The IP4 service instance to timeout\r
2ff29212	203	\r
2ff29212	204	**/\r
83cbd279	205	VOID\r
	206	Ip4PacketTimerTicking (\r
	207	IN IP4_SERVICE *IpSb\r
	208	);\r
	209	\r
a1503a32	210	/**\r
	211	The work function to locate IPsec protocol to process the inbound or \r
	212	outbound IP packets. The process routine handls the packet with following\r
	213	actions: bypass the packet, discard the packet, or protect the packet. \r
	214	\r
	215	@param[in] IpSb The IP4 service instance\r
	216	@param[in] Head The The caller supplied IP4 header.\r
	217	@param[in, out] Netbuf The IP4 packet to be processed by IPsec\r
	218	@param[in] Options The caller supplied options\r
	219	@param[in] OptionsLen The length of the option\r
	220	@param[in] Direction The directionality in an SPD entry, \r
	221	EfiIPsecInBound or EfiIPsecOutBound\r
	222	@param[in] Context The token's wrap\r
	223	\r
	224	@retval EFI_SUCCESS The IPsec protocol is not available or disabled.\r
	225	@retval EFI_SUCCESS The packet was bypassed and all buffers remain the same.\r
	226	@retval EFI_SUCCESS The packet was protected.\r
	227	@retval EFI_ACCESS_DENIED The packet was discarded. \r
	228	@retval EFI_OUT_OF_RESOURCES There is no suffcient resource to complete the operation.\r
	229	@retval EFI_BUFFER_TOO_SMALL The number of non-empty block is bigger than the \r
	230	number of input data blocks when build a fragment table.\r
	231	\r
	232	**/\r
	233	EFI_STATUS\r
	234	Ip4IpSecProcessPacket (\r
	235	IN IP4_SERVICE *IpSb,\r
	236	IN IP4_HEAD *Head,\r
	237	IN OUT NET_BUF **Netbuf,\r
	238	IN UINT8 *Options,\r
	239	IN UINT32 OptionsLen,\r
	240	IN EFI_IPSEC_TRAFFIC_DIR Direction,\r
	241	IN VOID *Context\r
	242	);\r
	243	\r
83cbd279	244	#endif\r