xref: /illumos-gate/usr/src/uts/common/sys/dls.h (revision 88f3d7297a011d0fa0768a7b2082305a822487b2)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef	_SYS_DLS_H
28 #define	_SYS_DLS_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #include <sys/types.h>
33 #include <sys/stream.h>
34 #include <sys/ght.h>
35 #include <sys/mac.h>
36 
37 /*
38  * Data-Link Services Module
39  */
40 
41 #ifdef	__cplusplus
42 extern "C" {
43 #endif
44 
45 /*
46  * Module name.
47  */
48 #define	DLS_MODULE_NAME	"dls"
49 
50 /*
51  * Data-Link Services Information (text emitted by modinfo(1m))
52  */
53 #define	DLS_INFO	"Data-Link Services v%I%"
54 
55 /*
56  * Check the legality of a DLSAP value. The following values are allowed,
57  * as specified by PSARC 2003/150:
58  *
59  * 0							802 semantics
60  * ETHERTYPE_802_MIN (1536)..ETHERTYPE_MAX (65535)	ethertype semantics
61  * 1..ETHERMTU (1500)					802 semantics, for
62  *							DL_ETHER only.
63  */
64 #define	SAP_LEGAL(type, sap) \
65 	(((sap) >= ETHERTYPE_802_MIN && (sap) < ETHERTYPE_MAX) || \
66 	((sap) == 0) || \
67 	((sap) <= ETHERMTU && (type) == DL_ETHER))
68 
69 #ifdef	_KERNEL
70 
71 extern int	dls_create(const char *, const char *, uint_t, uint16_t);
72 extern int	dls_destroy(const char *);
73 
74 typedef	struct dls_t	*dls_channel_t;
75 
76 extern int	dls_open(const char *, dls_channel_t *);
77 extern void	dls_close(dls_channel_t);
78 
79 extern mac_handle_t	dls_mac(dls_channel_t);
80 extern uint16_t		dls_vid(dls_channel_t);
81 
82 #define	DLS_SAP_LLC	0
83 #define	DLS_SAP_PROMISC	(1 << 16)
84 
85 extern int	dls_bind(dls_channel_t, uint16_t);
86 extern void	dls_unbind(dls_channel_t);
87 
88 #define	DLS_PROMISC_SAP		0x00000001
89 #define	DLS_PROMISC_MULTI	0x00000002
90 #define	DLS_PROMISC_PHYS	0x00000004
91 
92 extern int	dls_promisc(dls_channel_t, uint32_t);
93 
94 extern int	dls_multicst_add(dls_channel_t, const uint8_t *);
95 extern int	dls_multicst_remove(dls_channel_t, const uint8_t *);
96 
97 extern mblk_t	*dls_header(dls_channel_t, const uint8_t *, uint16_t, uint_t);
98 
99 typedef struct dls_header_info {
100 	size_t		dhi_length;
101 	const uint8_t	*dhi_daddr;
102 	const uint8_t	*dhi_saddr;
103 	uint16_t	dhi_ethertype;
104 	uint16_t	dhi_vid;
105 	boolean_t	dhi_isgroup;
106 } dls_header_info_t;
107 
108 extern void	dls_header_info(dls_channel_t, mblk_t *, dls_header_info_t *);
109 
110 typedef	void	(*dls_rx_t)(void *, mac_resource_handle_t, mblk_t *, size_t);
111 
112 extern void	dls_rx_set(dls_channel_t, dls_rx_t, void *);
113 
114 extern mblk_t		*dls_tx(dls_channel_t, mblk_t *);
115 
116 extern boolean_t	dls_active_set(dls_channel_t);
117 extern void		dls_active_clear(dls_channel_t);
118 
119 #endif	/* _KERNEL */
120 
121 #ifdef	__cplusplus
122 }
123 #endif
124 
125 #endif	/* _SYS_DLS_H */
126