xref: /freebsd/sys/netsmb/smb_trantcp.h (revision 0e33efe4e4b5d24e2d416938af8bc6e6e4160ec8)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2000-2001 Boris Popov
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 #ifndef _NETSMB_SMB_TRANTCP_H_
31 #define	_NETSMB_SMB_TRANTCP_H_
32 
33 #ifdef _KERNEL
34 
35 #ifdef NB_DEBUG
36 #define NBDEBUG(format, args...)	 printf("%s(%d): "format,	\
37 					    __func__ , __LINE__ ,## args)
38 #else
39 #define NBDEBUG(format, args...)
40 #endif
41 
42 enum nbstate {
43 	NBST_CLOSED,
44 	NBST_RQSENT,
45 	NBST_SESSION,
46 	NBST_RETARGET,
47 	NBST_REFUSED
48 };
49 
50 
51 /*
52  * socket specific data
53  */
54 struct nbpcb {
55 	struct smb_vc *	nbp_vc;
56 	struct socket *	nbp_tso;	/* transport socket */
57 	struct sockaddr_nb *nbp_laddr;	/* local address */
58 	struct sockaddr_nb *nbp_paddr;	/* peer address */
59 
60 	int		nbp_flags;
61 #define	NBF_LOCADDR	0x0001		/* has local addr */
62 #define	NBF_CONNECTED	0x0002
63 #define	NBF_RECVLOCK	0x0004
64 
65 	enum nbstate	nbp_state;
66 	struct timespec	nbp_timo;
67 	int		nbp_sndbuf;
68 	int		nbp_rcvbuf;
69 	void *		nbp_selectid;
70 
71 /*	LIST_ENTRY(nbpcb) nbp_link;*/
72 };
73 
74 /*
75  * Nominal space allocated per a NETBIOS socket.
76  */
77 #define	NB_SNDQ		(64 * 1024)
78 #define	NB_RCVQ		(64 * 1024)
79 
80 /*
81  * TCP slowstart presents a problem in conjunction with large
82  * reads.  To ensure a steady stream of ACKs while reading using
83  * large transaction sizes, we call soreceive() with a smaller
84  * buffer size.  See nbssn_recv().
85  */
86 #define NB_SORECEIVE_CHUNK	(8 * 1024)
87 
88 extern struct smb_tran_desc smb_tran_nbtcp_desc;
89 
90 #endif /* _KERNEL */
91 
92 #endif /* !_NETSMB_SMB_TRANTCP_H_ */
93