FreeBSD/Linux Kernel Cross Reference
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29 * @(#)socketvar.h 8.3 (Berkeley) 2/19/95
31 * $FreeBSD: stable/8/sys/sys/sockstate.h 199583 2009-11-20 15:27:52Z jhb $
33 #ifndef _SYS_SOCKTATE_H_
34 #define _SYS_SOCKTATE_H_
37 * Socket state bits.
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.
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 */
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.
64 #define SS_PROTOREF 0x4000 /* strong protocol reference */
67 * Socket state bits now stored in the socket buffer state field.
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 */
73 struct socket;
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_ */
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