| 0,0 → 1,168 |
|---|
| #ifndef _NETINET_TCP_H |
| #define _NETINET_TCP_H |
| |
| #include <inttypes.h> |
| #include <endian.h> |
| |
| __BEGIN_DECLS |
| |
| struct tcphdr { /* size 20/0x14 40/0x28 with IP header */ |
| uint16_t source; /* offset 0 20/0x14 */ |
| uint16_t dest; /* offset 2 22/0x16 */ |
| uint32_t seq; /* offset 4 24/0x18 */ |
| uint32_t ack_seq; /* offset 8 28/0x1c */ |
| #if __BYTE_ORDER == __LITTLE_ENDIAN |
| uint16_t res1:4, doff:4, fin:1, syn:1, rst:1, psh:1, ack:1, urg:1, ece:1, cwr:1; |
| #else |
| uint16_t doff:4, res1:4, cwr:1, ece:1, urg:1, ack:1, psh:1, rst:1, syn:1, fin:1; |
| #endif |
| /* offset 12/0xc 32/0x20 */ |
| uint16_t window; /* offset 14/0xe 34/0x22 */ |
| uint16_t check; /* offset 16/0x10 36/0x24 */ |
| uint16_t urg_ptr; /* offset 18/0x12 38/0x26 */ |
| }; |
| |
| |
| enum { |
| TCP_ESTABLISHED = 1, |
| TCP_SYN_SENT, |
| TCP_SYN_RECV, |
| TCP_FIN_WAIT1, |
| TCP_FIN_WAIT2, |
| TCP_TIME_WAIT, |
| TCP_CLOSE, |
| TCP_CLOSE_WAIT, |
| TCP_LAST_ACK, |
| TCP_LISTEN, |
| TCP_CLOSING, /* now a valid state */ |
| |
| TCP_MAX_STATES /* Leave at the end! */ |
| }; |
| |
| #define TCP_STATE_MASK 0xF |
| #define TCP_ACTION_FIN (1 << 7) |
| |
| enum { |
| TCPF_ESTABLISHED = (1 << 1), |
| TCPF_SYN_SENT = (1 << 2), |
| TCPF_SYN_RECV = (1 << 3), |
| TCPF_FIN_WAIT1 = (1 << 4), |
| TCPF_FIN_WAIT2 = (1 << 5), |
| TCPF_TIME_WAIT = (1 << 6), |
| TCPF_CLOSE = (1 << 7), |
| TCPF_CLOSE_WAIT = (1 << 8), |
| TCPF_LAST_ACK = (1 << 9), |
| TCPF_LISTEN = (1 << 10), |
| TCPF_CLOSING = (1 << 11) |
| }; |
| |
| /* |
| * The union cast uses a gcc extension to avoid aliasing problems |
| * (union is compatible to any of its members) |
| * This means this part of the code is -fstrict-aliasing safe now. |
| */ |
| union tcp_word_hdr { |
| struct tcphdr hdr; |
| uint32_t words[5]; |
| }; |
| |
| #define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3]) |
| |
| enum { |
| #if __BYTE_ORDER == __LITTLE_ENDIAN |
| TCP_FLAG_CWR = 0x00008000, |
| TCP_FLAG_ECE = 0x00004000, |
| TCP_FLAG_URG = 0x00002000, |
| TCP_FLAG_ACK = 0x00001000, |
| TCP_FLAG_PSH = 0x00000800, |
| TCP_FLAG_RST = 0x00000400, |
| TCP_FLAG_SYN = 0x00000200, |
| TCP_FLAG_FIN = 0x00000100, |
| TCP_RESERVED_BITS = 0x0000C00F, |
| TCP_DATA_OFFSET = 0x000000F0 |
| #else |
| TCP_FLAG_CWR = 0x00800000, |
| TCP_FLAG_ECE = 0x00400000, |
| TCP_FLAG_URG = 0x00200000, |
| TCP_FLAG_ACK = 0x00100000, |
| TCP_FLAG_PSH = 0x00080000, |
| TCP_FLAG_RST = 0x00040000, |
| TCP_FLAG_SYN = 0x00020000, |
| TCP_FLAG_FIN = 0x00010000, |
| TCP_RESERVED_BITS = 0x0FC00000, |
| TCP_DATA_OFFSET = 0xF0000000 |
| #endif |
| }; |
| |
| /* TCP socket options */ |
| #define TCP_NODELAY 1 /* Turn off Nagle's algorithm. */ |
| #define TCP_MAXSEG 2 /* Limit MSS */ |
| #define TCP_CORK 3 /* Never send partially complete segments */ |
| #define TCP_KEEPIDLE 4 /* Start keeplives after this period */ |
| #define TCP_KEEPINTVL 5 /* Interval between keepalives */ |
| #define TCP_KEEPCNT 6 /* Number of keepalives before death */ |
| #define TCP_SYNCNT 7 /* Number of SYN retransmits */ |
| #define TCP_LINGER2 8 /* Life time of orphaned FIN-WAIT-2 state */ |
| #define TCP_DEFER_ACCEPT 9 /* Wake up listener only when data arrive */ |
| #define TCP_WINDOW_CLAMP 10 /* Bound advertised window */ |
| #define TCP_INFO 11 /* Information about this connection. */ |
| #define TCP_QUICKACK 12 /* Block/reenable quick acks */ |
| |
| #define TCPI_OPT_TIMESTAMPS 1 |
| #define TCPI_OPT_SACK 2 |
| #define TCPI_OPT_WSCALE 4 |
| #define TCPI_OPT_ECN 8 |
| |
| enum tcp_ca_state { |
| TCP_CA_Open = 0, |
| #define TCPF_CA_Open (1<<TCP_CA_Open) |
| TCP_CA_Disorder = 1, |
| #define TCPF_CA_Disorder (1<<TCP_CA_Disorder) |
| TCP_CA_CWR = 2, |
| #define TCPF_CA_CWR (1<<TCP_CA_CWR) |
| TCP_CA_Recovery = 3, |
| #define TCPF_CA_Recovery (1<<TCP_CA_Recovery) |
| TCP_CA_Loss = 4 |
| #define TCPF_CA_Loss (1<<TCP_CA_Loss) |
| }; |
| |
| struct tcp_info { |
| uint8_t tcpi_state; |
| uint8_t tcpi_ca_state; |
| uint8_t tcpi_retransmits; |
| uint8_t tcpi_probes; |
| uint8_t tcpi_backoff; |
| uint8_t tcpi_options; |
| uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4; |
| |
| uint32_t tcpi_rto; |
| uint32_t tcpi_ato; |
| uint32_t tcpi_snd_mss; |
| uint32_t tcpi_rcv_mss; |
| |
| uint32_t tcpi_unacked; |
| uint32_t tcpi_sacked; |
| uint32_t tcpi_lost; |
| uint32_t tcpi_retrans; |
| uint32_t tcpi_fackets; |
| |
| /* Times. */ |
| uint32_t tcpi_last_data_sent; |
| uint32_t tcpi_last_ack_sent; /* Not remembered, sorry. */ |
| uint32_t tcpi_last_data_recv; |
| uint32_t tcpi_last_ack_recv; |
| |
| /* Metrics. */ |
| uint32_t tcpi_pmtu; |
| uint32_t tcpi_rcv_ssthresh; |
| uint32_t tcpi_rtt; |
| uint32_t tcpi_rttvar; |
| uint32_t tcpi_snd_ssthresh; |
| uint32_t tcpi_snd_cwnd; |
| uint32_t tcpi_advmss; |
| uint32_t tcpi_reordering; |
| }; |
| |
| __END_DECLS |
| |
| #endif |