xref: /titanic_41/usr/src/uts/common/sys/dld_ioc.h (revision 1cfa752f4e24c34133009b0f6c139127a5c461de)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
23  */
24 
25 #ifndef	_SYS_DLD_IOC_H
26 #define	_SYS_DLD_IOC_H
27 
28 #include <sys/types.h>
29 #include <sys/cred.h>
30 
31 #ifdef	__cplusplus
32 extern "C" {
33 #endif
34 
35 /*
36  * The name of the dld control device.  All GLDv3 control ioctls are
37  * performed on this device.
38  */
39 #define	DLD_CONTROL_DEV		"/dev/dld"
40 
41 /*
42  * GLDv3 ioctl values are structured as follows:
43  *
44  * |    16-bits     |     16-bits    |
45  * +----------------+----------------+
46  * |   module-id    |   command-id   |
47  * +----------------+----------------+
48  */
49 #define	DLD_IOC_CMD(modid, cmdid)	(((uint_t)(modid) << 16) | (cmdid))
50 #define	DLD_IOC_MODID(cmd)		(((cmd) & 0xffff0000) >> 16)
51 /*
52  * GLDv3 module ids to be passed in as the first argument to
53  * dld_ioc_register() and dld_ioc_unregister().
54  */
55 #define	DLD_IOC		0x0D1D
56 #define	AGGR_IOC	0x0A66
57 #define	VNIC_IOC	0x0171
58 #define	SIMNET_IOC	0x5132
59 #define	IPTUN_IOC	0x454A
60 #define	BRIDGE_IOC	0xB81D
61 #define	IBPART_IOC	0x6171
62 
63 /* GLDv3 modules use these macros to generate unique ioctl commands */
64 #define	DLDIOC(cmdid)		DLD_IOC_CMD(DLD_IOC, (cmdid))
65 #define	AGGRIOC(cmdid)		DLD_IOC_CMD(AGGR_IOC, (cmdid))
66 #define	VNICIOC(cmdid)		DLD_IOC_CMD(VNIC_IOC, (cmdid))
67 #define	SIMNETIOC(cmdid)	DLD_IOC_CMD(SIMNET_IOC, (cmdid))
68 #define	IPTUNIOC(cmdid)		DLD_IOC_CMD(IPTUN_IOC, (cmdid))
69 #define	BRIDGEIOC(cmdid)	DLD_IOC_CMD(BRIDGE_IOC, (cmdid))
70 #define	IBPARTIOC(cmdid)	DLD_IOC_CMD(IBPART_IOC, (cmdid))
71 
72 #ifdef _KERNEL
73 
74 /*
75  * GLDv3 modules register the ioctls they're interested in by passing
76  * in an array of dld_ioc_info_t to dld_ioc_register().  Modules
77  * should call dld_ioc_register() either in _init() or attach().  The
78  * dld module assumes that ddi_hold_devi_by_instance(<module>, 0, 0)
79  * will cause the module to load and call dld_ioc_register().
80  *
81  * The di_cmd field is an ioctl command generated using one of the
82  * macros above.  The di_argsize value is used by dld to copyin or
83  * copyout the correct amount of data depending on whether the
84  * DLDCOPYIN or DLDCOPYOUT flags are set so that every di_func()
85  * callback function does not need to copyin/out its own data.
86  */
87 
88 typedef int (dld_ioc_func_t)(void *, intptr_t, int, cred_t *, int *);
89 typedef int (dld_ioc_priv_func_t)(const cred_t *);
90 typedef struct dld_ioc_info {
91 	uint_t		di_cmd;
92 	uint_t		di_flags;
93 	size_t		di_argsize;
94 	dld_ioc_func_t	*di_func;
95 	dld_ioc_priv_func_t *di_priv_func;
96 } dld_ioc_info_t;
97 
98 /* Values for di_flags */
99 #define	DLDCOPYIN	0x00000001 /* copyin di_argsize amount of data */
100 #define	DLDCOPYOUT	0x00000002 /* copyout di_argsize amount of data */
101 #define	DLDCOPYINOUT	(DLDCOPYIN | DLDCOPYOUT)
102 
103 #define	DLDIOCCNT(l)	(sizeof (l) / sizeof (dld_ioc_info_t))
104 int	dld_ioc_register(uint16_t, dld_ioc_info_t *, uint_t);
105 void	dld_ioc_unregister(uint16_t);
106 
107 #endif /* _KERNEL */
108 
109 #ifdef	__cplusplus
110 }
111 #endif
112 
113 #endif	/* _SYS_DLD_IOC_H */
114