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83cbd279 | 1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2005 - 2006, Intel Corporation\r | |
4 | All rights reserved. This program and the accompanying materials\r | |
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 | |
12 | Module Name:\r | |
13 | \r | |
14 | Ip4Input.h\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | \r | |
19 | **/\r | |
20 | \r | |
21 | #ifndef __EFI_IP4_INPUT_H__\r | |
22 | #define __EFI_IP4_INPUT_H__\r | |
23 | \r | |
24 | enum {\r | |
25 | IP4_MIN_HEADLEN = 20,\r | |
26 | IP4_MAX_HEADLEN = 60,\r | |
27 | \r | |
28 | IP4_ASSEMLE_HASH_SIZE = 31,\r | |
29 | IP4_FRAGMENT_LIFE = 120,\r | |
30 | IP4_MAX_PACKET_SIZE = 65535\r | |
31 | };\r | |
32 | \r | |
33 | //\r | |
34 | // Per packet information for input process. LinkFlag specifies whether\r | |
35 | // the packet is received as Link layer unicast, multicast or broadcast.\r | |
36 | // The CastType is the IP layer cast type, such as IP multicast or unicast.\r | |
37 | // Start, End and Length are staffs used to assemble the packets. Start\r | |
38 | // is the sequence number of the first byte of data in the packet. Length\r | |
39 | // is the number of bytes of data. End = Start + Length, that is, the\r | |
40 | // sequence number of last byte + 1. Each assembled packet has a count down\r | |
41 | // life. If it isn't consumed before Life reaches zero, the packet is released.\r | |
42 | //\r | |
43 | typedef struct {\r | |
44 | UINTN LinkFlag;\r | |
45 | INTN CastType;\r | |
46 | INTN Start;\r | |
47 | INTN End;\r | |
48 | INTN Length;\r | |
49 | UINT32 Life;\r | |
50 | EFI_STATUS Status;\r | |
51 | } IP4_CLIP_INFO;\r | |
52 | \r | |
53 | //\r | |
54 | // Structure used to assemble IP packets.\r | |
55 | //\r | |
56 | typedef struct {\r | |
57 | NET_LIST_ENTRY Link;\r | |
58 | \r | |
59 | //\r | |
60 | // Identity of one IP4 packet. Each fragment of a packet has\r | |
61 | // the same (Dst, Src, Id, Protocol).\r | |
62 | //\r | |
63 | IP4_ADDR Dst;\r | |
64 | IP4_ADDR Src;\r | |
65 | UINT16 Id;\r | |
66 | UINT8 Protocol;\r | |
67 | \r | |
68 | INTN TotalLen;\r | |
69 | INTN CurLen;\r | |
70 | NET_LIST_ENTRY Fragments; // List of all the fragments of this packet\r | |
71 | \r | |
72 | IP4_HEAD *Head; // IP head of the first fragment\r | |
73 | IP4_CLIP_INFO *Info; // Per packet info of the first fragment\r | |
74 | INTN Life; // Count down life for the packet.\r | |
75 | } IP4_ASSEMBLE_ENTRY;\r | |
76 | \r | |
77 | //\r | |
78 | // Each Ip service instance has an assemble table to reassemble\r | |
79 | // the packets before delivery to its children. It is organized\r | |
80 | // as hash table.\r | |
81 | //\r | |
82 | typedef struct {\r | |
83 | NET_LIST_ENTRY Bucket[IP4_ASSEMLE_HASH_SIZE];\r | |
84 | } IP4_ASSEMBLE_TABLE;\r | |
85 | \r | |
86 | #define IP4_GET_CLIP_INFO(Packet) ((IP4_CLIP_INFO *) ((Packet)->ProtoData))\r | |
87 | \r | |
88 | #define IP4_ASSEMBLE_HASH(Dst, Src, Id, Proto) \\r | |
89 | (((Dst) + (Src) + ((Id) << 16) + (Proto)) % IP4_ASSEMLE_HASH_SIZE)\r | |
90 | \r | |
91 | #define IP4_RXDATA_WRAP_SIZE(NumFrag) \\r | |
92 | (sizeof (IP4_RXDATA_WRAP) + sizeof (EFI_IP4_FRAGMENT_DATA) * ((NumFrag) - 1))\r | |
93 | \r | |
94 | VOID\r | |
95 | Ip4InitAssembleTable (\r | |
96 | IN IP4_ASSEMBLE_TABLE *Table\r | |
97 | );\r | |
98 | \r | |
99 | VOID\r | |
100 | Ip4CleanAssembleTable (\r | |
101 | IN IP4_ASSEMBLE_TABLE *Table\r | |
102 | );\r | |
103 | \r | |
104 | VOID\r | |
105 | Ip4AccpetFrame (\r | |
106 | IN IP4_PROTOCOL *Ip4Instance,\r | |
107 | IN NET_BUF *Packet,\r | |
108 | IN EFI_STATUS IoStatus,\r | |
109 | IN UINT32 Flag,\r | |
110 | IN VOID *Context\r | |
111 | );\r | |
112 | \r | |
113 | EFI_STATUS\r | |
114 | Ip4Demultiplex (\r | |
115 | IN IP4_SERVICE *SbInstance,\r | |
116 | IN IP4_HEAD *Head,\r | |
117 | IN NET_BUF *Packet\r | |
118 | );\r | |
119 | \r | |
120 | INTN\r | |
121 | Ip4InterfaceEnquePacket (\r | |
122 | IN IP4_SERVICE *SbInstance,\r | |
123 | IN IP4_HEAD *Head,\r | |
124 | IN NET_BUF *Packet,\r | |
125 | IN IP4_INTERFACE *Interface\r | |
126 | );\r | |
127 | \r | |
128 | EFI_STATUS\r | |
129 | Ip4InstanceDeliverPacket (\r | |
130 | IN IP4_PROTOCOL *Ip4Instance\r | |
131 | );\r | |
132 | \r | |
133 | VOID\r | |
134 | Ip4PacketTimerTicking (\r | |
135 | IN IP4_SERVICE *IpSb\r | |
136 | );\r | |
137 | \r | |
138 | #endif\r |