xref: /illumos-gate/usr/src/uts/sun4v/sys/vsw_fdb.h (revision c1c61f44e88f4c8c155272ee56d868043146096a)
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	_VSW_FDB_H
28 #define	_VSW_FDB_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #ifdef	__cplusplus
33 extern "C" {
34 #endif
35 
36 /*
37  * Convert ethernet (mac) address to hash table key.
38  */
39 #define	KEY_HASH(key, addr) \
40 	(key = ((((uint64_t)(addr)->ether_addr_octet[0]) << 40) | \
41 	(((uint64_t)(addr)->ether_addr_octet[1]) << 32) | \
42 	(((uint64_t)(addr)->ether_addr_octet[2]) << 24) | \
43 	(((uint64_t)(addr)->ether_addr_octet[3]) << 16) | \
44 	(((uint64_t)(addr)->ether_addr_octet[4]) << 8) | \
45 	((uint64_t)(addr)->ether_addr_octet[5])));
46 
47 #define	VLAN_ID_KEY(key)	((mod_hash_key_t)(uintptr_t)(key))
48 
49 /*
50  * Multicast forwarding database (mFDB) is a hashtable
51  * keyed off the mac address, with the value being a linked
52  * list of mfdb_ent_t structures, each of which is a destination
53  * (either a vsw_port or the vsw instance itself when plumbed as
54  * a network device) to which the multicast pkt should be forwarded.
55  */
56 typedef struct mfdb_ent {
57 	struct mfdb_ent		*nextp;		/* next entry in list */
58 	void			*d_addr;	/* address of dest */
59 	uint8_t			d_type;		/* destination type */
60 } mfdb_ent_t;
61 
62 /*
63  * Forwarding database entry. Each member port of a vsw will have an entry in
64  * the vsw's fdb. Ref count is bumped up while sending a packet destined to a
65  * port corresponding to the fdb entry.
66  */
67 typedef struct vsw_fdbe {
68 	void		*portp;	/* pointer to the vnet_port */
69 	uint32_t	refcnt;	/* reference count */
70 } vsw_fdbe_t;
71 
72 #ifdef	__cplusplus
73 }
74 #endif
75 
76 #endif	/* _VSW_FDB_H */
77