8a031a1d1e
module hook, we can share a common set of synchronization structures. This cuts the amount of cacheline_aligned data for these structures by 50%. Note that we still have a per-hook localcount, since we need to count individual references. As discussed with riastradh@ Welcome to 9.99.22 !
133 lines
3.7 KiB
C
133 lines
3.7 KiB
C
/* $NetBSD: rtsock_70.c,v 1.8 2019/12/12 02:15:42 pgoyette Exp $ */
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/*
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* Copyright (c) 2016 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Roy Marples.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: rtsock_70.c,v 1.8 2019/12/12 02:15:42 pgoyette Exp $");
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#ifdef _KERNEL_OPT
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#include "opt_compat_netbsd.h"
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#endif
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#include <sys/mbuf.h>
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#include <sys/compat_stub.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <compat/net/if.h>
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#include <compat/net/route.h>
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#include <compat/net/route_70.h>
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void
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compat_70_rt_newaddrmsg1(int cmd, struct ifaddr *ifa)
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{
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struct rt_addrinfo info;
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const struct sockaddr *sa;
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struct mbuf *m;
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struct ifnet *ifp;
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struct ifa_msghdr70 ifam;
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int ncmd;
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KASSERT(ifa != NULL);
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ifp = ifa->ifa_ifp;
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switch (cmd) {
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case RTM_NEWADDR:
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ncmd = RTM_ONEWADDR;
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break;
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case RTM_DELADDR:
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ncmd = RTM_ODELADDR;
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break;
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case RTM_CHGADDR:
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ncmd = RTM_OCHGADDR;
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break;
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default:
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panic("%s: called with wrong command", __func__);
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}
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memset(&info, 0, sizeof(info));
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info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr;
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KASSERT(ifp->if_dl != NULL);
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info.rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr;
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info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask;
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info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;
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memset(&ifam, 0, sizeof(ifam));
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ifam.ifam_index = ifp->if_index;
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ifam.ifam_metric = ifa->ifa_metric;
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ifam.ifam_flags = ifa->ifa_flags;
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m = rt_msg1(ncmd, &info, &ifam, sizeof(ifam));
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if (m == NULL)
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return;
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mtod(m, struct ifa_msghdr70 *)->ifam_addrs = info.rti_addrs;
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route_enqueue(m, sa ? sa->sa_family : 0);
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}
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int
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compat_70_iflist_addr(struct rt_walkarg *w, struct ifaddr *ifa,
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struct rt_addrinfo *info)
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{
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int len, error;
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if ((error = rt_msg3(RTM_ONEWADDR, info, 0, w, &len)))
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return error;
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if (w->w_where && w->w_tmem && w->w_needed <= 0) {
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struct ifa_msghdr70 *ifam;
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ifam = (struct ifa_msghdr70 *)w->w_tmem;
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ifam->ifam_index = ifa->ifa_ifp->if_index;
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ifam->ifam_flags = ifa->ifa_flags;
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ifam->ifam_metric = ifa->ifa_metric;
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ifam->ifam_addrs = info->rti_addrs;
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if ((error = copyout(w->w_tmem, w->w_where, len)) == 0)
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w->w_where = (char *)w->w_where + len;
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}
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return error;
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}
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void
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rtsock_70_init(void)
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{
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MODULE_HOOK_SET(rtsock_newaddr_70_hook, compat_70_rt_newaddrmsg1);
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MODULE_HOOK_SET(rtsock_iflist_70_hook, compat_70_iflist_addr);
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}
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void
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rtsock_70_fini(void)
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{
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MODULE_HOOK_UNSET(rtsock_newaddr_70_hook);
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MODULE_HOOK_UNSET(rtsock_iflist_70_hook);
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}
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