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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4973 | right-hear | 1 | #ifndef _NETINET_TCP_H |
| 2 | #define _NETINET_TCP_H |
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| 3 | |||
| 4 | #include |
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| 5 | #include |
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| 6 | |||
| 7 | __BEGIN_DECLS |
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| 8 | |||
| 9 | struct tcphdr { /* size 20/0x14 40/0x28 with IP header */ |
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| 10 | uint16_t source; /* offset 0 20/0x14 */ |
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| 11 | uint16_t dest; /* offset 2 22/0x16 */ |
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| 12 | uint32_t seq; /* offset 4 24/0x18 */ |
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| 13 | uint32_t ack_seq; /* offset 8 28/0x1c */ |
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| 14 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
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| 15 | uint16_t res1:4, doff:4, fin:1, syn:1, rst:1, psh:1, ack:1, urg:1, ece:1, cwr:1; |
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| 16 | #else |
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| 17 | uint16_t doff:4, res1:4, cwr:1, ece:1, urg:1, ack:1, psh:1, rst:1, syn:1, fin:1; |
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| 18 | #endif |
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| 19 | /* offset 12/0xc 32/0x20 */ |
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| 20 | uint16_t window; /* offset 14/0xe 34/0x22 */ |
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| 21 | uint16_t check; /* offset 16/0x10 36/0x24 */ |
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| 22 | uint16_t urg_ptr; /* offset 18/0x12 38/0x26 */ |
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| 23 | }; |
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| 24 | |||
| 25 | |||
| 26 | enum { |
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| 27 | TCP_ESTABLISHED = 1, |
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| 28 | TCP_SYN_SENT, |
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| 29 | TCP_SYN_RECV, |
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| 30 | TCP_FIN_WAIT1, |
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| 31 | TCP_FIN_WAIT2, |
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| 32 | TCP_TIME_WAIT, |
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| 33 | TCP_CLOSE, |
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| 34 | TCP_CLOSE_WAIT, |
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| 35 | TCP_LAST_ACK, |
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| 36 | TCP_LISTEN, |
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| 37 | TCP_CLOSING, /* now a valid state */ |
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| 38 | |||
| 39 | TCP_MAX_STATES /* Leave at the end! */ |
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| 40 | }; |
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| 41 | |||
| 42 | #define TCP_STATE_MASK 0xF |
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| 43 | #define TCP_ACTION_FIN (1 << 7) |
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| 44 | |||
| 45 | enum { |
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| 46 | TCPF_ESTABLISHED = (1 << 1), |
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| 47 | TCPF_SYN_SENT = (1 << 2), |
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| 48 | TCPF_SYN_RECV = (1 << 3), |
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| 49 | TCPF_FIN_WAIT1 = (1 << 4), |
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| 50 | TCPF_FIN_WAIT2 = (1 << 5), |
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| 51 | TCPF_TIME_WAIT = (1 << 6), |
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| 52 | TCPF_CLOSE = (1 << 7), |
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| 53 | TCPF_CLOSE_WAIT = (1 << 8), |
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| 54 | TCPF_LAST_ACK = (1 << 9), |
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| 55 | TCPF_LISTEN = (1 << 10), |
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| 56 | TCPF_CLOSING = (1 << 11) |
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| 57 | }; |
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| 58 | |||
| 59 | /* |
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| 60 | * The union cast uses a gcc extension to avoid aliasing problems |
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| 61 | * (union is compatible to any of its members) |
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| 62 | * This means this part of the code is -fstrict-aliasing safe now. |
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| 63 | */ |
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| 64 | union tcp_word_hdr { |
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| 65 | struct tcphdr hdr; |
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| 66 | uint32_t words[5]; |
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| 67 | }; |
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| 68 | |||
| 69 | #define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3]) |
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| 70 | |||
| 71 | enum { |
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| 72 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
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| 73 | TCP_FLAG_CWR = 0x00008000, |
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| 74 | TCP_FLAG_ECE = 0x00004000, |
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| 75 | TCP_FLAG_URG = 0x00002000, |
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| 76 | TCP_FLAG_ACK = 0x00001000, |
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| 77 | TCP_FLAG_PSH = 0x00000800, |
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| 78 | TCP_FLAG_RST = 0x00000400, |
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| 79 | TCP_FLAG_SYN = 0x00000200, |
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| 80 | TCP_FLAG_FIN = 0x00000100, |
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| 81 | TCP_RESERVED_BITS = 0x0000C00F, |
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| 82 | TCP_DATA_OFFSET = 0x000000F0 |
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| 83 | #else |
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| 84 | TCP_FLAG_CWR = 0x00800000, |
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| 85 | TCP_FLAG_ECE = 0x00400000, |
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| 86 | TCP_FLAG_URG = 0x00200000, |
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| 87 | TCP_FLAG_ACK = 0x00100000, |
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| 88 | TCP_FLAG_PSH = 0x00080000, |
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| 89 | TCP_FLAG_RST = 0x00040000, |
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| 90 | TCP_FLAG_SYN = 0x00020000, |
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| 91 | TCP_FLAG_FIN = 0x00010000, |
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| 92 | TCP_RESERVED_BITS = 0x0FC00000, |
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| 93 | TCP_DATA_OFFSET = 0xF0000000 |
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| 94 | #endif |
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| 95 | }; |
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| 96 | |||
| 97 | /* TCP socket options */ |
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| 98 | #define TCP_NODELAY 1 /* Turn off Nagle's algorithm. */ |
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| 99 | #define TCP_MAXSEG 2 /* Limit MSS */ |
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| 100 | #define TCP_CORK 3 /* Never send partially complete segments */ |
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| 101 | #define TCP_KEEPIDLE 4 /* Start keeplives after this period */ |
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| 102 | #define TCP_KEEPINTVL 5 /* Interval between keepalives */ |
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| 103 | #define TCP_KEEPCNT 6 /* Number of keepalives before death */ |
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| 104 | #define TCP_SYNCNT 7 /* Number of SYN retransmits */ |
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| 105 | #define TCP_LINGER2 8 /* Life time of orphaned FIN-WAIT-2 state */ |
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| 106 | #define TCP_DEFER_ACCEPT 9 /* Wake up listener only when data arrive */ |
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| 107 | #define TCP_WINDOW_CLAMP 10 /* Bound advertised window */ |
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| 108 | #define TCP_INFO 11 /* Information about this connection. */ |
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| 109 | #define TCP_QUICKACK 12 /* Block/reenable quick acks */ |
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| 110 | |||
| 111 | #define TCPI_OPT_TIMESTAMPS 1 |
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| 112 | #define TCPI_OPT_SACK 2 |
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| 113 | #define TCPI_OPT_WSCALE 4 |
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| 114 | #define TCPI_OPT_ECN 8 |
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| 115 | |||
| 116 | enum tcp_ca_state { |
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| 117 | TCP_CA_Open = 0, |
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| 118 | #define TCPF_CA_Open (1< |
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| 119 | TCP_CA_Disorder = 1, |
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| 120 | #define TCPF_CA_Disorder (1< |
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| 121 | TCP_CA_CWR = 2, |
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| 122 | #define TCPF_CA_CWR (1< |
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| 123 | TCP_CA_Recovery = 3, |
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| 124 | #define TCPF_CA_Recovery (1< |
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| 125 | TCP_CA_Loss = 4 |
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| 126 | #define TCPF_CA_Loss (1< |
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| 127 | }; |
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| 128 | |||
| 129 | struct tcp_info { |
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| 130 | uint8_t tcpi_state; |
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| 131 | uint8_t tcpi_ca_state; |
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| 132 | uint8_t tcpi_retransmits; |
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| 133 | uint8_t tcpi_probes; |
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| 134 | uint8_t tcpi_backoff; |
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| 135 | uint8_t tcpi_options; |
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| 136 | uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4; |
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| 137 | |||
| 138 | uint32_t tcpi_rto; |
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| 139 | uint32_t tcpi_ato; |
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| 140 | uint32_t tcpi_snd_mss; |
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| 141 | uint32_t tcpi_rcv_mss; |
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| 142 | |||
| 143 | uint32_t tcpi_unacked; |
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| 144 | uint32_t tcpi_sacked; |
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| 145 | uint32_t tcpi_lost; |
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| 146 | uint32_t tcpi_retrans; |
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| 147 | uint32_t tcpi_fackets; |
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| 148 | |||
| 149 | /* Times. */ |
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| 150 | uint32_t tcpi_last_data_sent; |
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| 151 | uint32_t tcpi_last_ack_sent; /* Not remembered, sorry. */ |
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| 152 | uint32_t tcpi_last_data_recv; |
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| 153 | uint32_t tcpi_last_ack_recv; |
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| 154 | |||
| 155 | /* Metrics. */ |
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| 156 | uint32_t tcpi_pmtu; |
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| 157 | uint32_t tcpi_rcv_ssthresh; |
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| 158 | uint32_t tcpi_rtt; |
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| 159 | uint32_t tcpi_rttvar; |
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| 160 | uint32_t tcpi_snd_ssthresh; |
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| 161 | uint32_t tcpi_snd_cwnd; |
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| 162 | uint32_t tcpi_advmss; |
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| 163 | uint32_t tcpi_reordering; |
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| 164 | }; |
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| 165 | |||
| 166 | __END_DECLS |
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| 167 | |||
| 168 | #endif |