diff options
Diffstat (limited to 'include/linux/tcp.h')
| -rw-r--r-- | include/linux/tcp.h | 211 |
1 files changed, 3 insertions, 208 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 67c789ae719c..60b7aac15e0e 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -17,217 +17,13 @@ #ifndef _LINUX_TCP_H #define _LINUX_TCP_H -#include <linux/types.h> -#include <asm/byteorder.h> -#include <linux/socket.h> - -struct tcphdr { - __be16 source; - __be16 dest; - __be32 seq; - __be32 ack_seq; -#if defined(__LITTLE_ENDIAN_BITFIELD) - __u16 res1:4, - doff:4, - fin:1, - syn:1, - rst:1, - psh:1, - ack:1, - urg:1, - ece:1, - cwr:1; -#elif defined(__BIG_ENDIAN_BITFIELD) - __u16 doff:4, - res1:4, - cwr:1, - ece:1, - urg:1, - ack:1, - psh:1, - rst:1, - syn:1, - fin:1; -#else -#error "Adjust your <asm/byteorder.h> defines" -#endif - __be16 window; - __sum16 check; - __be16 urg_ptr; -}; - -/* - * 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; - __be32 words[5]; -}; - -#define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3]) - -enum { - TCP_FLAG_CWR = __constant_cpu_to_be32(0x00800000), - TCP_FLAG_ECE = __constant_cpu_to_be32(0x00400000), - TCP_FLAG_URG = __constant_cpu_to_be32(0x00200000), - TCP_FLAG_ACK = __constant_cpu_to_be32(0x00100000), - TCP_FLAG_PSH = __constant_cpu_to_be32(0x00080000), - TCP_FLAG_RST = __constant_cpu_to_be32(0x00040000), - TCP_FLAG_SYN = __constant_cpu_to_be32(0x00020000), - TCP_FLAG_FIN = __constant_cpu_to_be32(0x00010000), - TCP_RESERVED_BITS = __constant_cpu_to_be32(0x0F000000), - TCP_DATA_OFFSET = __constant_cpu_to_be32(0xF0000000) -}; - -/* - * TCP general constants - */ -#define TCP_MSS_DEFAULT 536U /* IPv4 (RFC1122, RFC2581) */ -#define TCP_MSS_DESIRED 1220U /* IPv6 (tunneled), EDNS0 (RFC3226) */ - -/* 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 TCP_CONGESTION 13 /* Congestion control algorithm */ -#define TCP_MD5SIG 14 /* TCP MD5 Signature (RFC2385) */ -#define TCP_COOKIE_TRANSACTIONS 15 /* TCP Cookie Transactions */ -#define TCP_THIN_LINEAR_TIMEOUTS 16 /* Use linear timeouts for thin streams*/ -#define TCP_THIN_DUPACK 17 /* Fast retrans. after 1 dupack */ -#define TCP_USER_TIMEOUT 18 /* How long for loss retry before timeout */ -#define TCP_REPAIR 19 /* TCP sock is under repair right now */ -#define TCP_REPAIR_QUEUE 20 -#define TCP_QUEUE_SEQ 21 -#define TCP_REPAIR_OPTIONS 22 -#define TCP_FASTOPEN 23 /* Enable FastOpen on listeners */ - -struct tcp_repair_opt { - __u32 opt_code; - __u32 opt_val; -}; - -enum { - TCP_NO_QUEUE, - TCP_RECV_QUEUE, - TCP_SEND_QUEUE, - TCP_QUEUES_NR, -}; - -/* for TCP_INFO socket option */ -#define TCPI_OPT_TIMESTAMPS 1 -#define TCPI_OPT_SACK 2 -#define TCPI_OPT_WSCALE 4 -#define TCPI_OPT_ECN 8 /* ECN was negociated at TCP session init */ -#define TCPI_OPT_ECN_SEEN 16 /* we received at least one packet with ECT */ - -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 { - __u8 tcpi_state; - __u8 tcpi_ca_state; - __u8 tcpi_retransmits; - __u8 tcpi_probes; - __u8 tcpi_backoff; - __u8 tcpi_options; - __u8 tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4; - - __u32 tcpi_rto; - __u32 tcpi_ato; - __u32 tcpi_snd_mss; - __u32 tcpi_rcv_mss; - - __u32 tcpi_unacked; - __u32 tcpi_sacked; - __u32 tcpi_lost; - __u32 tcpi_retrans; - __u32 tcpi_fackets; - - /* Times. */ - __u32 tcpi_last_data_sent; - __u32 tcpi_last_ack_sent; /* Not remembered, sorry. */ - __u32 tcpi_last_data_recv; - __u32 tcpi_last_ack_recv; - - /* Metrics. */ - __u32 tcpi_pmtu; - __u32 tcpi_rcv_ssthresh; - __u32 tcpi_rtt; - __u32 tcpi_rttvar; - __u32 tcpi_snd_ssthresh; - __u32 tcpi_snd_cwnd; - __u32 tcpi_advmss; - __u32 tcpi_reordering; - - __u32 tcpi_rcv_rtt; - __u32 tcpi_rcv_space; - - __u32 tcpi_total_retrans; -}; - -/* for TCP_MD5SIG socket option */ -#define TCP_MD5SIG_MAXKEYLEN 80 - -struct tcp_md5sig { - struct __kernel_sockaddr_storage tcpm_addr; /* address associated */ - __u16 __tcpm_pad1; /* zero */ - __u16 tcpm_keylen; /* key length */ - __u32 __tcpm_pad2; /* zero */ - __u8 tcpm_key[TCP_MD5SIG_MAXKEYLEN]; /* key (binary) */ -}; - -/* for TCP_COOKIE_TRANSACTIONS (TCPCT) socket option */ -#define TCP_COOKIE_MIN 8 /* 64-bits */ -#define TCP_COOKIE_MAX 16 /* 128-bits */ -#define TCP_COOKIE_PAIR_SIZE (2*TCP_COOKIE_MAX) - -/* Flags for both getsockopt and setsockopt */ -#define TCP_COOKIE_IN_ALWAYS (1 << 0) /* Discard SYN without cookie */ -#define TCP_COOKIE_OUT_NEVER (1 << 1) /* Prohibit outgoing cookies, - * supercedes everything. */ - -/* Flags for getsockopt */ -#define TCP_S_DATA_IN (1 << 2) /* Was data received? */ -#define TCP_S_DATA_OUT (1 << 3) /* Was data sent? */ - -/* TCP_COOKIE_TRANSACTIONS data */ -struct tcp_cookie_transactions { - __u16 tcpct_flags; /* see above */ - __u8 __tcpct_pad1; /* zero */ - __u8 tcpct_cookie_desired; /* bytes */ - __u16 tcpct_s_data_desired; /* bytes of variable data */ - __u16 tcpct_used; /* bytes in value */ - __u8 tcpct_value[TCP_MSS_DEFAULT]; -}; - -#ifdef __KERNEL__ #include <linux/skbuff.h> #include <linux/dmaengine.h> #include <net/sock.h> #include <net/inet_connection_sock.h> #include <net/inet_timewait_sock.h> +#include <uapi/linux/tcp.h> static inline struct tcphdr *tcp_hdr(const struct sk_buff *skb) { @@ -395,7 +191,8 @@ struct tcp_sock { u8 do_early_retrans:1,/* Enable RFC5827 early-retransmit */ early_retrans_delayed:1, /* Delayed ER timer installed */ syn_data:1, /* SYN includes data */ - syn_fastopen:1; /* SYN includes Fast Open option */ + syn_fastopen:1, /* SYN includes Fast Open option */ + syn_data_acked:1;/* data in SYN is acked by SYN-ACK */ /* RTT measurement */ u32 srtt; /* smoothed round trip time << 3 */ @@ -595,6 +392,4 @@ static inline int fastopen_init_queue(struct sock *sk, int backlog) return 0; } -#endif /* __KERNEL__ */ - #endif /* _LINUX_TCP_H */ |