xref: /titanic_51/usr/src/uts/sun4v/sys/vnet_common.h (revision e1dd0a2f3a26050d1f183c1cafae42c4e3a0b57e)
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 /*
23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _VNET_COMMON_H
28 #define	_VNET_COMMON_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #ifdef __cplusplus
33 extern "C" {
34 #endif
35 
36 #include <sys/vio_common.h>
37 #include <sys/vio_mailbox.h>
38 #include <sys/ethernet.h>
39 
40 /*
41  * This header file contains definitions common to LDoms Virtual Network
42  * server (vsw) and client (vnet).
43  */
44 
45 /* max # of cookies per frame size */
46 #define	MAX_COOKIES	 ((ETHERMAX >> MMU_PAGESHIFT) + 2ULL)
47 
48 /* initial send sequence number */
49 #define	VNET_ISS		0x1
50 
51 #define	VNET_2K			(1 << 11)
52 #define	VNET_IPALIGN		6	/* padding for IP header alignment */
53 #define	VNET_LDCALIGN		8	/* padding for ldc_mem_copy() align */
54 #define	VNET_ROUNDUP_2K(n)	(((n) + (VNET_2K - 1)) & ~(VNET_2K - 1))
55 
56 #define	VNET_NUM_HANDSHAKES	6	/* # of handshake attempts */
57 
58 /* vnet descriptor */
59 typedef struct vnet_public_desc {
60 	vio_dring_entry_hdr_t	hdr;		/* descriptor header */
61 	uint32_t		nbytes;		/* data length */
62 	uint32_t		ncookies;	/* number of data cookies */
63 	ldc_mem_cookie_t	memcookie[MAX_COOKIES]; /* data cookies */
64 } vnet_public_desc_t;
65 
66 /*
67  * Vnet in-band descriptor. Used by those vnet clients
68  * such as OBP who do not use descriptor rings.
69  */
70 typedef struct vnet_ibnd_desc {
71 	vio_inband_desc_msg_hdr_t	hdr;
72 
73 	/* payload */
74 	uint32_t			nbytes;
75 	uint32_t			ncookies;
76 	ldc_mem_cookie_t		memcookie[MAX_COOKIES];
77 } vnet_ibnd_desc_t;
78 
79 /* exported functions */
80 uint64_t vnet_macaddr_strtoul(const uint8_t *macaddr);
81 void vnet_macaddr_ultostr(uint64_t value, uint8_t *macaddr);
82 mblk_t *vnet_vlan_insert_tag(mblk_t *mp, uint16_t vid);
83 mblk_t *vnet_vlan_remove_tag(mblk_t *mp);
84 
85 #ifdef __cplusplus
86 }
87 #endif
88 
89 #endif	/* _VNET_COMMON_H */
90