/* $NetBSD: rtsock_70.c,v 1.8 2019/12/12 02:15:42 pgoyette Exp $ */

/* $NetBSD: rtsock_70.c,v 1.8 2019/12/12 02:15:42 pgoyette Exp $ */

/*
* Copyright (c) 2016 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Roy Marples.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: rtsock_70.c,v 1.8 2019/12/12 02:15:42 pgoyette Exp $");

#ifdef _KERNEL_OPT
#include "opt_compat_netbsd.h"
#endif

#include <sys/mbuf.h>
#include <sys/compat_stub.h>

#include <net/if.h>
#include <net/route.h>

#include <compat/net/if.h>
#include <compat/net/route.h>
#include <compat/net/route_70.h>

void
compat_70_rt_newaddrmsg1(int cmd, struct ifaddr *ifa)
{
struct rt_addrinfo info;
const struct sockaddr *sa;
struct mbuf *m;
struct ifnet *ifp;
struct ifa_msghdr70 ifam;
int ncmd;

KASSERT(ifa != NULL);
ifp = ifa->ifa_ifp;

switch (cmd) {
case RTM_NEWADDR:
ncmd = RTM_ONEWADDR;
break;
case RTM_DELADDR:
ncmd = RTM_ODELADDR;
break;
case RTM_CHGADDR:
ncmd = RTM_OCHGADDR;
break;
default:
panic("%s: called with wrong command", __func__);
}

memset(&info, 0, sizeof(info));
info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr;
KASSERT(ifp->if_dl != NULL);
info.rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr;
info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask;
info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;

memset(&ifam, 0, sizeof(ifam));
ifam.ifam_index = ifp->if_index;
ifam.ifam_metric = ifa->ifa_metric;
ifam.ifam_flags = ifa->ifa_flags;

m = rt_msg1(ncmd, &info, &ifam, sizeof(ifam));
if (m == NULL)
return;

mtod(m, struct ifa_msghdr70 *)->ifam_addrs = info.rti_addrs;
route_enqueue(m, sa ? sa->sa_family : 0);
}

int
compat_70_iflist_addr(struct rt_walkarg *w, struct ifaddr *ifa,
struct rt_addrinfo *info)
{
int len, error;

if ((error = rt_msg3(RTM_ONEWADDR, info, 0, w, &len)))
return error;
if (w->w_where && w->w_tmem && w->w_needed <= 0) {
struct ifa_msghdr70 *ifam;

ifam = (struct ifa_msghdr70 *)w->w_tmem;
ifam->ifam_index = ifa->ifa_ifp->if_index;
ifam->ifam_flags = ifa->ifa_flags;
ifam->ifam_metric = ifa->ifa_metric;
ifam->ifam_addrs = info->rti_addrs;
if ((error = copyout(w->w_tmem, w->w_where, len)) == 0)
w->w_where = (char *)w->w_where + len;
}
return error;
}

void
rtsock_70_init(void)
{

MODULE_HOOK_SET(rtsock_newaddr_70_hook, compat_70_rt_newaddrmsg1);
MODULE_HOOK_SET(rtsock_iflist_70_hook, compat_70_iflist_addr);
}

void
rtsock_70_fini(void)
{

MODULE_HOOK_UNSET(rtsock_newaddr_70_hook);
MODULE_HOOK_UNSET(rtsock_iflist_70_hook);
}