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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 | Tcp4Option.h\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | \r | |
19 | **/\r | |
20 | \r | |
21 | #ifndef _TCP4_OPTION_H_\r | |
22 | #define _TCP4_OPTION_H_\r | |
23 | \r | |
24 | //\r | |
25 | // The structure to store the parse option value.\r | |
26 | // ParseOption only parse the options, don't process them.\r | |
27 | //\r | |
28 | typedef struct s_TCP_OPTION {\r | |
29 | UINT8 Flag; // flag such as TCP_OPTION_RCVD_MSS\r | |
30 | UINT8 WndScale; // the WndScale received\r | |
31 | UINT16 Mss; // the Mss received\r | |
32 | UINT32 TSVal; // the TSVal field in a timestamp option\r | |
33 | UINT32 TSEcr; // the TSEcr field in a timestamp option\r | |
34 | } TCP_OPTION;\r | |
35 | \r | |
85511ddf | 36 | typedef enum {\r |
83cbd279 | 37 | \r |
38 | //\r | |
39 | // supported TCP option type and their length\r | |
40 | //\r | |
41 | TCP_OPTION_EOP = 0, // End Of oPtion\r | |
42 | TCP_OPTION_NOP = 1, // No-Option.\r | |
43 | TCP_OPTION_MSS = 2, // Maximum Segment Size\r | |
44 | TCP_OPTION_WS = 3, // Window scale\r | |
45 | TCP_OPTION_TS = 8, // Timestamp\r | |
46 | TCP_OPTION_MSS_LEN = 4, // length of MSS option\r | |
47 | TCP_OPTION_WS_LEN = 3, // length of window scale option\r | |
48 | TCP_OPTION_TS_LEN = 10, // length of timestamp option\r | |
49 | TCP_OPTION_WS_ALIGNED_LEN = 4, // length of window scale option, aligned\r | |
50 | TCP_OPTION_TS_ALIGNED_LEN = 12, // length of timestamp option, aligned\r | |
51 | \r | |
52 | //\r | |
53 | // recommend format of timestamp window scale\r | |
54 | // option for fast process.\r | |
55 | //\r | |
56 | TCP_OPTION_TS_FAST = ((TCP_OPTION_NOP << 24) |\r | |
57 | (TCP_OPTION_NOP << 16) |\r | |
58 | (TCP_OPTION_TS << 8) |\r | |
59 | TCP_OPTION_TS_LEN),\r | |
60 | \r | |
61 | TCP_OPTION_WS_FAST = ((TCP_OPTION_NOP << 24) |\r | |
62 | (TCP_OPTION_WS << 16) |\r | |
63 | (TCP_OPTION_WS_LEN << 8)),\r | |
64 | \r | |
65 | TCP_OPTION_MSS_FAST = ((TCP_OPTION_MSS << 24) |\r | |
66 | (TCP_OPTION_MSS_LEN << 16)),\r | |
67 | \r | |
68 | //\r | |
69 | // Other misc definations\r | |
70 | //\r | |
83cbd279 | 71 | TCP_OPTION_RCVD_MSS = 0x01,\r |
72 | TCP_OPTION_RCVD_WS = 0x02,\r | |
85511ddf | 73 | TCP_OPTION_RCVD_TS = 0x04,\r |
74 | TCP_OPTION_MAX_WS = 14, // Maxium window scale value\r | |
75 | TCP_OPTION_MAX_WIN = 0xffff // max window size in TCP header\r | |
76 | } TCP_OPTION_TYPE;\r | |
83cbd279 | 77 | \r |
78 | UINT8\r | |
79 | TcpComputeScale (\r | |
80 | IN TCP_CB *Tcb\r | |
81 | );\r | |
82 | \r | |
83 | UINT16\r | |
84 | TcpSynBuildOption (\r | |
85 | IN TCP_CB *Tcb,\r | |
86 | IN NET_BUF *Buf\r | |
87 | );\r | |
88 | \r | |
89 | UINT16\r | |
90 | TcpBuildOption (\r | |
91 | IN TCP_CB *Tcb,\r | |
92 | IN NET_BUF *Buf\r | |
93 | );\r | |
94 | \r | |
95 | INTN\r | |
96 | TcpParseOption (\r | |
97 | IN TCP_HEAD *Tcp,\r | |
98 | IN TCP_OPTION *Option\r | |
99 | );\r | |
100 | \r | |
101 | UINT32\r | |
102 | TcpPawsOK (\r | |
103 | IN TCP_CB *Tcb,\r | |
104 | IN UINT32 TSVal\r | |
105 | );\r | |
106 | \r | |
107 | #endif\r |