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use super::fcntl::*;

/// NET		An implementation of the SOCKET network access protocol.
/// This is the master header file for the Linux NET layer,
/// or, in plain English: the networking handling part of the kernel.

/// Historically, SOCKWQ_ASYNC_NOSPACE & SOCKWQ_ASYNC_WAITDATA were located
/// in sock->flags, but moved into sk->sk_wq->flags to be RCU protected.
/// Eventually all flags will be in sk->sk_wq->flags.
pub const SOCKWQ_ASYNC_NOSPACE: i32 = 0;
pub const SOCKWQ_ASYNC_WAITDATA: i32 = 1;
pub const SOCK_NOSPACE: i32 = 2;
pub const SOCK_PASSCRED: i32 = 3;
pub const SOCK_PASSSEC: i32 = 4;

/// enum sock_type - Socket types
/// @SOCK_STREAM: stream (connection) socket
/// @SOCK_DGRAM: datagram (conn.less) socket
/// @SOCK_RAW: raw socket
/// @SOCK_RDM: reliably-delivered message
/// @SOCK_SEQPACKET: sequential packet socket
/// @SOCK_DCCP: Datagram Congestion Control Protocol socket
/// @SOCK_PACKET: linux specific way of getting packets at the dev level.
///  	  For writing rarp and other similar things on the user level.
///
/// When adding some new socket type please
/// grep ARCH_HAS_SOCKET_TYPE include/asm-* /socket.h, at least MIPS
/// overrides this enum for binary compat reasons.
pub const SOCK_STREAM: i32 = 1;
pub const SOCK_DGRAM: i32 = 2;
pub const SOCK_RAW: i32 = 3;
pub const SOCK_RDM: i32 = 4;
pub const SOCK_SEQPACKET: i32 = 5;
pub const SOCK_DCCP: i32 = 6;
pub const SOCK_PACKET: i32 = 10;

pub const SOCK_MAX: i32 = SOCK_PACKET + 1;

/// Mask which covers at least up to SOCK_MASK-1.  The
/// remaining bits are used as flags.
pub const SOCK_TYPE_MASK: i32 = 0xf;

/// Flags for socket, socketpair, accept4
pub const SOCK_CLOEXEC: i32 = O_CLOEXEC;

pub const SOCK_NONBLOCK: i32 = O_NONBLOCK;

/// enum sock_shutdown_cmd - Shutdown types
/// @SHUT_RD: shutdown receptions
/// @SHUT_WR: shutdown transmissions
/// @SHUT_RDWR: shutdown receptions/transmissions
pub const SHUT_RD: i32 = 0;
pub const SHUT_WR: i32 = 1;
pub const SHUT_RDWR: i32 = 2;

//struct socket_wq {
//	// Note: wait MUST be first field of socket_wq
//	wait_queue_head_t	wait;
//
//	struct fasync_struct	*fasync_list;
//	unsigned long		flags; /* %SOCKWQ_ASYNC_NOSPACE, etc */
//	struct rcu_head		rcu;
//}

// struct socket - general BSD socket
// @state: socket state (%SS_CONNECTED, etc)
// @type: socket type (%SOCK_STREAM, etc)
// @flags: socket flags (%SOCK_NOSPACE, etc)
// @ops: protocol specific socket operations
// @file: File back pointer for gc
// @sk: internal networking protocol agnostic socket representation
// @wq: wait queue for several uses
//    #[repr(C)]
//pub struct socket_t {
//	pub state: socket_state_t,
//
//	pub type_: i16,
//
//	pub flags: usize,
//
//	struct file		*file;
//	struct sock		*sk;
//	const struct proto_ops	*ops;
//
//	struct socket_wq	wq;
//};

pub const SOCK_WAKE_IO: i32 = 0;
pub const SOCK_WAKE_WAITD: i32 = 1;
pub const SOCK_WAKE_SPACE: i32 = 2;
pub const SOCK_WAKE_URG: i32 = 3;