diff options
Diffstat (limited to 'mdk-stage1/dietlibc/include/netinet/tcp.h')
| -rw-r--r-- | mdk-stage1/dietlibc/include/netinet/tcp.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/include/netinet/tcp.h b/mdk-stage1/dietlibc/include/netinet/tcp.h new file mode 100644 index 000000000..e47f24dff --- /dev/null +++ b/mdk-stage1/dietlibc/include/netinet/tcp.h @@ -0,0 +1,164 @@ +#ifndef _NETINET_TCP_H +#define _NETINET_TCP_H + +#include <inttypes.h> +#include <endian.h> + +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; +}; + +#endif |