common/sys/mac_ib.h

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _SYS_MAC_ETHER_H
#define _SYS_MAC_ETHER_H

#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * Ethernet MAC Plugin
 */

#ifdef  __cplusplus
extern "C" {
#endif

#ifdef  _KERNEL

#define MAC_PLUGIN_IDENT_IB "mac_ib"

#define MAC_IB_MAX_802_SAP  255
#define MAC_IB_ETHERTYPE_MAX    65535
#define MAC_IB_GID_SIZE     10
#define MAC_IB_BROADCAST_GID    0xFFFFFFFF

/*
 * In order to transmit the datagram to correct destination, an extra
 * header including destination address is required. IB does not provide an
 * interface for sending a link layer header directly to the IB link and the
 * link layer header received from the IB link is missing information that
 * GLDv3 requires. So mac_ib plugin defines a "soft" header as below.
 */
typedef struct ib_addrs {
    ipoib_mac_t ipib_src;
    ipoib_mac_t ipib_dst;
} ib_addrs_t;

typedef struct ib_header_info {
    union {
        ipoib_pgrh_t    ipib_grh;
        ib_addrs_t  ipib_addrs;
    } ipib_prefix;
    ipoib_hdr_t ipib_rhdr;
} ib_header_info_t;

#define ib_dst  ipib_prefix.ipib_addrs.ipib_dst
#define ib_src  ipib_prefix.ipib_addrs.ipib_src
#define ib_grh  ipib_prefix.ipib_grh

#endif  /* _KERNEL */

#ifdef  __cplusplus
}
#endif

#endif /* _SYS_MAC_ETHER_H */