/*
 * Copyright (c) 2004-2009 Voltaire Inc.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#if HAVE_CONFIG_H
#  include <config.h>
#endif				/* HAVE_CONFIG_H */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>

#include <infiniband/mad.h>

#undef DEBUG
#define DEBUG	if (ibdebug)	IBWARN

int portid2portnum(ib_portid_t * portid)
{
	if (portid->lid > 0)
		return -1;

	if (portid->drpath.cnt == 0)
		return 0;

	return portid->drpath.p[(portid->drpath.cnt - 1)];
}

char *portid2str(ib_portid_t * portid)
{
	static char buf[1024] = "local";
	int n = 0;

	if (portid->lid > 0) {
		n += sprintf(buf + n, "Lid %d", portid->lid);
		if (portid->grh_present) {
			char gid[sizeof
				 "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"];
			if (inet_ntop(AF_INET6, portid->gid, gid, sizeof(gid)))
				n += sprintf(buf + n, " Gid %s", gid);
		}
		if (portid->drpath.cnt)
			n += sprintf(buf + n, " ");
		else
			return buf;
	}
	n += sprintf(buf + n, "DR path ");
	drpath2str(&(portid->drpath), buf + n, sizeof(buf) - n);

	return buf;
}

int str2drpath(ib_dr_path_t * path, char *routepath, int drslid, int drdlid)
{
	char *s, *str;
	char *tmp;

	path->cnt = -1;

	if (!routepath || !(tmp = strdup(routepath)))
		goto Exit;

	DEBUG("DR str: %s", routepath);

	str = tmp;

	while (str && *str) {
		if ((s = strchr(str, ',')))
			*s = 0;
		path->p[++path->cnt] = (uint8_t) atoi(str);
		if (!s)
			break;
		str = s + 1;
	}
	free(tmp);

Exit:
	path->drdlid = drdlid ? drdlid : 0xffff;
	path->drslid = drslid ? drslid : 0xffff;

	return path->cnt;
}

char *drpath2str(ib_dr_path_t * path, char *dstr, size_t dstr_size)
{
	int i = 0;
	int rc = snprintf(dstr, dstr_size, "slid %u; dlid %u; %d",
			  path->drslid, path->drdlid, path->p[0]);
	if (rc >= (int)dstr_size)
		return dstr;
	for (i = 1; i <= path->cnt; i++) {
		rc += snprintf(dstr + rc, dstr_size - rc, ",%d", path->p[i]);
		if (rc >= (int)dstr_size)
			break;
	}
	return (dstr);
}