1 /*- 2 * Copyright (c) 1982, 1986, 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)socketvar.h 8.3 (Berkeley) 2/19/95 30 * 31 * $FreeBSD$ 32 */ 33 #ifndef _SYS_SOCKTATE_H_ 34 #define _SYS_SOCKTATE_H_ 35 36 /* 37 * Socket state bits. 38 * 39 * Historically, this bits were all kept in the so_state field. For 40 * locking reasons, they are now in multiple fields, as they are 41 * locked differently. so_state maintains basic socket state protected 42 * by the socket lock. so_qstate holds information about the socket 43 * accept queues. Each socket buffer also has a state field holding 44 * information relevant to that socket buffer (can't send, rcv). Many 45 * fields will be read without locks to improve performance and avoid 46 * lock order issues. However, this approach must be used with caution. 47 */ 48 #define SS_NOFDREF 0x0001 /* no file table ref any more */ 49 #define SS_ISCONNECTED 0x0002 /* socket connected to a peer */ 50 #define SS_ISCONNECTING 0x0004 /* in process of connecting to peer */ 51 #define SS_ISDISCONNECTING 0x0008 /* in process of disconnecting */ 52 #define SS_NBIO 0x0100 /* non-blocking ops */ 53 #define SS_ASYNC 0x0200 /* async i/o notify */ 54 #define SS_ISCONFIRMING 0x0400 /* deciding to accept connection req */ 55 #define SS_ISDISCONNECTED 0x2000 /* socket disconnected from peer */ 56 57 /* 58 * Protocols can mark a socket as SS_PROTOREF to indicate that, following 59 * pru_detach, they still want the socket to persist, and will free it 60 * themselves when they are done. Protocols should only ever call sofree() 61 * following setting this flag in pru_detach(), and never otherwise, as 62 * sofree() bypasses socket reference counting. 63 */ 64 #define SS_PROTOREF 0x4000 /* strong protocol reference */ 65 66 /* 67 * Socket state bits now stored in the socket buffer state field. 68 */ 69 #define SBS_CANTSENDMORE 0x0010 /* can't send more data to peer */ 70 #define SBS_CANTRCVMORE 0x0020 /* can't receive more data from peer */ 71 #define SBS_RCVATMARK 0x0040 /* at mark on input */ 72 73 struct socket; 74 75 void soisconnected(struct socket *so); 76 void soisconnecting(struct socket *so); 77 void soisdisconnected(struct socket *so); 78 void soisdisconnecting(struct socket *so); 79 void socantrcvmore(struct socket *so); 80 void socantrcvmore_locked(struct socket *so); 81 void socantsendmore(struct socket *so); 82 void socantsendmore_locked(struct socket *so); 83 #endif /* _SYS_SOCKTATE_H_ */ 84