pub const TCP_MSS_DEFAULT: u32 = 536;
pub const TCP_MSS_DESIRED: u32 = 1220;
pub const TCP_NODELAY: i32 = 1;
pub const TCP_MAXSEG: i32 = 2;
pub const TCP_CORK: i32 = 3;
pub const TCP_KEEPIDLE: i32 = 4;
pub const TCP_KEEPINTVL: i32 = 5;
pub const TCP_KEEPCNT: i32 = 6;
pub const TCP_SYNCNT: i32 = 7;
pub const TCP_LINGER2: i32 = 8;
pub const TCP_DEFER_ACCEPT: i32 = 9;
pub const TCP_WINDOW_CLAMP: i32 = 10;
pub const TCP_INFO: i32 = 11;
pub const TCP_QUICKACK: i32 = 12;
pub const TCP_CONGESTION: i32 = 13;
pub const TCP_MD5SIG: i32 = 14;
pub const TCP_THIN_LINEAR_TIMEOUTS: i32 = 16;
pub const TCP_THIN_DUPACK: i32 = 17;
pub const TCP_USER_TIMEOUT: i32 = 18;
pub const TCP_REPAIR: i32 = 19;
pub const TCP_REPAIR_QUEUE: i32 = 20;
pub const TCP_QUEUE_SEQ: i32 = 21;
pub const TCP_REPAIR_OPTIONS: i32 = 22;
pub const TCP_FASTOPEN: i32 = 23;
pub const TCP_TIMESTAMP: i32 = 24;
pub const TCP_NOTSENT_LOWAT: i32 = 25;
pub const TCP_CC_INFO: i32 = 26;
pub const TCP_SAVE_SYN: i32 = 27;
pub const TCP_SAVED_SYN: i32 = 28;
pub const TCP_REPAIR_WINDOW: i32 = 29;
pub const TCP_FASTOPEN_CONNECT: i32 = 30;
pub const TCP_ULP: i32 = 31;
pub const TCP_MD5SIG_EXT: i32 = 32;
pub const TCP_FASTOPEN_KEY: i32 = 33;
pub const TCP_FASTOPEN_NO_COOKIE: i32 = 34;
pub const TCP_ZEROCOPY_RECEIVE: i32 = 35;
pub const TCP_INQ: i32 = 36;
pub const TCP_CM_INQ: i32 = TCP_INQ;
pub const TCP_TX_DELAY: i32 = 37;
pub const TCP_REPAIR_ON: i32 = 1;
pub const TCP_REPAIR_OFF: i32 = 0;
pub const TCP_REPAIR_OFF_NO_WP: i32 = -1;
pub const TCPI_OPT_TIMESTAMPS: i32 = 1;
pub const TCPI_OPT_SACK: i32 = 2;
pub const TCPI_OPT_WSCALE: i32 = 4;
pub const TCPI_OPT_ECN: i32 = 8;
pub const TCPI_OPT_ECN_SEEN: i32 = 16;
pub const TCPI_OPT_SYN_DATA: i32 = 32;
pub const TCP_MD5SIG_MAXKEYLEN: i32 = 80;
pub const TCP_MD5SIG_FLAG_PREFIX: i32 = 0x1;
pub const TCP_MD5SIG_FLAG_IFINDEX: i32 = 0x2;