/*
 * GPL HEADER START
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 only,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License version 2 for more details (a copy is included
 * in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this program; If not, see
 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 * GPL HEADER END
 */
/*
 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
 * Use is subject to license terms.
 */
/*
 * This file is part of Lustre, http://www.lustre.org/
 * Lustre is a trademark of Sun Microsystems, Inc.
 */

#define DEBUG_SUBSYSTEM S_LNET
#include <lnet/lib-lnet.h>

int
lolnd_send (lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg)
{
        LASSERT (!lntmsg->msg_routing);
        LASSERT (!lntmsg->msg_target_is_router);
        
        return lnet_parse(ni, &lntmsg->msg_hdr, ni->ni_nid, lntmsg, 0);
}

int
lolnd_recv (lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg,
            int delayed, unsigned int niov, 
            struct iovec *iov, lnet_kiov_t *kiov,
            unsigned int offset, unsigned int mlen, unsigned int rlen)
{
        lnet_msg_t *sendmsg = private;

        if (lntmsg != NULL) {                   /* not discarding */
                if (sendmsg->msg_iov != NULL) {
                        if (iov != NULL)
                                lnet_copy_iov2iov(niov, iov, offset,
                                                  sendmsg->msg_niov,
                                                  sendmsg->msg_iov,
                                                  sendmsg->msg_offset, mlen);
                        else
                                lnet_copy_iov2kiov(niov, kiov, offset,
                                                   sendmsg->msg_niov,
                                                   sendmsg->msg_iov,
                                                   sendmsg->msg_offset, mlen);
                } else {
                        if (iov != NULL)
                                lnet_copy_kiov2iov(niov, iov, offset,
                                                   sendmsg->msg_niov,
                                                   sendmsg->msg_kiov,
                                                   sendmsg->msg_offset, mlen);
                        else
                                lnet_copy_kiov2kiov(niov, kiov, offset,
                                                    sendmsg->msg_niov,
                                                    sendmsg->msg_kiov,
                                                    sendmsg->msg_offset, mlen);
                }

                lnet_finalize(ni, lntmsg, 0);
        }
        
        lnet_finalize(ni, sendmsg, 0);
        return 0;
}

static int lolnd_instanced;

void
lolnd_shutdown(lnet_ni_t *ni)
{
	CDEBUG (D_NET, "shutdown\n");
        LASSERT (lolnd_instanced);
        
        lolnd_instanced = 0;
}

int
lolnd_startup (lnet_ni_t *ni)
{
	LASSERT (ni->ni_lnd == &the_lolnd);
	LASSERT (!lolnd_instanced);
        lolnd_instanced = 1;

	return (0);
}

lnd_t the_lolnd = {
        /* .lnd_list       = */ {&the_lolnd.lnd_list, &the_lolnd.lnd_list},
        /* .lnd_refcount   = */ 0,
        /* .lnd_type       = */ LOLND,
        /* .lnd_startup    = */ lolnd_startup,
        /* .lnd_shutdown   = */ lolnd_shutdown,
        /* .lnt_ctl        = */ NULL, 
        /* .lnd_send       = */ lolnd_send,
        /* .lnd_recv       = */ lolnd_recv,
        /* .lnd_eager_recv = */ NULL,
        /* .lnd_notify     = */ NULL,
#ifdef __KERNEL__
        /* .lnd_accept     = */ NULL
#else
        /* .lnd_wait       = */ NULL
#endif
};